wpa_supplicant/p2p_supplicant.c

   1 /*
   2  * wpa_supplicant - P2P
   3  * Copyright (c) 2009-2010, Atheros Communications
   4  * Copyright (c) 2010-2014, Jouni Malinen <j@w1.fi>
   5  *
   6  * This software may be distributed under the terms of the BSD license.
   7  * See README for more details.
   8  */
   9
  10 #include "includes.h"
  11
  12 #include "common.h"
  13 #include "eloop.h"
  14 #include "common/ieee802_11_common.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "wps/wps_i.h"
  18 #include "p2p/p2p.h"
  19 #include "ap/hostapd.h"
  20 #include "ap/ap_config.h"
  21 #include "ap/sta_info.h"
  22 #include "ap/ap_drv_ops.h"
  23 #include "ap/wps_hostapd.h"
  24 #include "ap/p2p_hostapd.h"
  25 #include "eapol_supp/eapol_supp_sm.h"
  26 #include "rsn_supp/wpa.h"
  27 #include "wpa_supplicant_i.h"
  28 #include "driver_i.h"
  29 #include "ap.h"
  30 #include "config_ssid.h"
  31 #include "config.h"
  32 #include "notify.h"
  33 #include "scan.h"
  34 #include "bss.h"
  35 #include "offchannel.h"
  36 #include "wps_supplicant.h"
  37 #include "p2p_supplicant.h"
  38 #include "wifi_display.h"
  39
  40
  41 /*
  42  * How many times to try to scan to find the GO before giving up on join
  43  * request.
  44  */
  45 #define P2P_MAX_JOIN_SCAN_ATTEMPTS 10
  46
  47 #define P2P_AUTO_PD_SCAN_ATTEMPTS 5
  48
  49 #ifndef P2P_MAX_CLIENT_IDLE
  50 /*
  51  * How many seconds to try to reconnect to the GO when connection in P2P client
  52  * role has been lost.
  53  */
  54 #define P2P_MAX_CLIENT_IDLE 10
  55 #endif /* P2P_MAX_CLIENT_IDLE */
  56
  57 #ifndef P2P_MAX_INITIAL_CONN_WAIT
  58 /*
  59  * How many seconds to wait for initial 4-way handshake to get completed after
  60  * WPS provisioning step or after the re-invocation of a persistent group on a
  61  * P2P Client.
  62  */
  63 #define P2P_MAX_INITIAL_CONN_WAIT 10
  64 #endif /* P2P_MAX_INITIAL_CONN_WAIT */
  65
  66 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO
  67 /*
  68  * How many seconds to wait for initial 4-way handshake to get completed after
  69  * WPS provisioning step on the GO. This controls the extra time the P2P
  70  * operation is considered to be in progress (e.g., to delay other scans) after
  71  * WPS provisioning has been completed on the GO during group formation.
  72  */
  73 #define P2P_MAX_INITIAL_CONN_WAIT_GO 10
  74 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO */
  75
  76 #ifndef P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE
  77 /*
  78  * How many seconds to wait for initial 4-way handshake to get completed after
  79  * re-invocation of a persistent group on the GO when the client is expected
  80  * to connect automatically (no user interaction).
  81  */
  82 #define P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE 15
  83 #endif /* P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE */
  84
  85 #define P2P_MGMT_DEVICE_PREFIX          "p2p-dev-"
  86
  87 enum p2p_group_removal_reason {
  88         P2P_GROUP_REMOVAL_UNKNOWN,
  89         P2P_GROUP_REMOVAL_SILENT,
  90         P2P_GROUP_REMOVAL_FORMATION_FAILED,
  91         P2P_GROUP_REMOVAL_REQUESTED,
  92         P2P_GROUP_REMOVAL_IDLE_TIMEOUT,
  93         P2P_GROUP_REMOVAL_UNAVAILABLE,
  94         P2P_GROUP_REMOVAL_GO_ENDING_SESSION,
  95         P2P_GROUP_REMOVAL_PSK_FAILURE,
  96         P2P_GROUP_REMOVAL_FREQ_CONFLICT
  97 };
  98
  99
 100 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx);
 101 static struct wpa_supplicant *
 102 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
 103                          int go);
 104 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
 105                                const u8 *ssid, size_t ssid_len);
 106 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
 107                                    const u8 *ssid, size_t ssid_len);
 108 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx);
 109 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
 110                          const u8 *dev_addr, enum p2p_wps_method wps_method,
 111                          int auto_join, int freq,
 112                          const u8 *ssid, size_t ssid_len);
 113 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s);
 114 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s);
 115 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx);
 116 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s);
 117 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
 118                                              void *timeout_ctx);
 119 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx);
 120 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
 121                                         int group_added);
 122 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s);
 123 static void wpas_stop_listen(void *ctx);
 124 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx);
 125
 126
 127 /*
 128  * Get the number of concurrent channels that the HW can operate, but that are
 129  * currently not in use by any of the wpa_supplicant interfaces.
 130  */
 131 static int wpas_p2p_num_unused_channels(struct wpa_supplicant *wpa_s)
 132 {
 133         int *freqs;
 134         int num, unused;
 135
 136         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 137         if (!freqs)
 138                 return -1;
 139
 140         num = get_shared_radio_freqs(wpa_s, freqs,
 141                                      wpa_s->num_multichan_concurrent);
 142         os_free(freqs);
 143
 144         unused = wpa_s->num_multichan_concurrent - num;
 145         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: num_unused_channels: %d", unused);
 146         return unused;
 147 }
 148
 149
 150 /*
 151  * Get the frequencies that are currently in use by one or more of the virtual
 152  * interfaces, and that are also valid for P2P operation.
 153  */
 154 static int wpas_p2p_valid_oper_freqs(struct wpa_supplicant *wpa_s,
 155                                      int *p2p_freqs, unsigned int len)
 156 {
 157         int *freqs;
 158         unsigned int num, i, j;
 159
 160         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
 161         if (!freqs)
 162                 return -1;
 163
 164         num = get_shared_radio_freqs(wpa_s, freqs,
 165                                      wpa_s->num_multichan_concurrent);
 166
 167         os_memset(p2p_freqs, 0, sizeof(int) * len);
 168
 169         for (i = 0, j = 0; i < num && j < len; i++) {
 170                 if (p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
 171                         p2p_freqs[j++] = freqs[i];
 172         }
 173
 174         os_free(freqs);
 175
 176         dump_freq_array(wpa_s, "valid for P2P", p2p_freqs, j);
 177
 178         return j;
 179 }
 180
 181
 182 static void wpas_p2p_set_own_freq_preference(struct wpa_supplicant *wpa_s,
 183                                              int freq)
 184 {
 185         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 186                 return;
 187         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
 188             freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
 189             wpas_p2p_num_unused_channels(wpa_s) > 0) {
 190                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz due to p2p_ignore_shared_freq=1 configuration",
 191                            freq);
 192                 freq = 0;
 193         }
 194         p2p_set_own_freq_preference(wpa_s->global->p2p, freq);
 195 }
 196
 197
 198 static void wpas_p2p_scan_res_handler(struct wpa_supplicant *wpa_s,
 199                                       struct wpa_scan_results *scan_res)
 200 {
 201         size_t i;
 202
 203         if (wpa_s->p2p_scan_work) {
 204                 struct wpa_radio_work *work = wpa_s->p2p_scan_work;
 205                 wpa_s->p2p_scan_work = NULL;
 206                 radio_work_done(work);
 207         }
 208
 209         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 210                 return;
 211
 212         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS)",
 213                    (int) scan_res->num);
 214
 215         for (i = 0; i < scan_res->num; i++) {
 216                 struct wpa_scan_res *bss = scan_res->res[i];
 217                 struct os_reltime time_tmp_age, entry_ts;
 218                 const u8 *ies;
 219                 size_t ies_len;
 220
 221                 time_tmp_age.sec = bss->age / 1000;
 222                 time_tmp_age.usec = (bss->age % 1000) * 1000;
 223                 os_reltime_sub(&scan_res->fetch_time, &time_tmp_age, &entry_ts);
 224
 225                 ies = (const u8 *) (bss + 1);
 226                 ies_len = bss->ie_len;
 227                 if (bss->beacon_ie_len > 0 &&
 228                     !wpa_scan_get_vendor_ie(bss, P2P_IE_VENDOR_TYPE) &&
 229                     wpa_scan_get_vendor_ie_beacon(bss, P2P_IE_VENDOR_TYPE)) {
 230                         wpa_printf(MSG_DEBUG, "P2P: Use P2P IE(s) from Beacon frame since no P2P IE(s) in Probe Response frames received for "
 231                                    MACSTR, MAC2STR(bss->bssid));
 232                         ies = ies + ies_len;
 233                         ies_len = bss->beacon_ie_len;
 234                 }
 235
 236
 237                 if (p2p_scan_res_handler(wpa_s->global->p2p, bss->bssid,
 238                                          bss->freq, &entry_ts, bss->level,
 239                                          ies, ies_len) > 0)
 240                         break;
 241         }
 242
 243         p2p_scan_res_handled(wpa_s->global->p2p);
 244 }
 245
 246
 247 static void wpas_p2p_trigger_scan_cb(struct wpa_radio_work *work, int deinit)
 248 {
 249         struct wpa_supplicant *wpa_s = work->wpa_s;
 250         struct wpa_driver_scan_params *params = work->ctx;
 251         int ret;
 252
 253         if (deinit) {
 254                 if (!work->started) {
 255                         wpa_scan_free_params(params);
 256                         return;
 257                 }
 258
 259                 wpa_s->p2p_scan_work = NULL;
 260                 return;
 261         }
 262
 263         ret = wpa_drv_scan(wpa_s, params);
 264         wpa_scan_free_params(params);
 265         work->ctx = NULL;
 266         if (ret) {
 267                 radio_work_done(work);
 268                 return;
 269         }
 270
 271         os_get_reltime(&wpa_s->scan_trigger_time);
 272         wpa_s->scan_res_handler = wpas_p2p_scan_res_handler;
 273         wpa_s->own_scan_requested = 1;
 274         wpa_s->p2p_scan_work = work;
 275 }
 276
 277
 278 static int wpas_p2p_scan(void *ctx, enum p2p_scan_type type, int freq,
 279                          unsigned int num_req_dev_types,
 280                          const u8 *req_dev_types, const u8 *dev_id, u16 pw_id)
 281 {
 282         struct wpa_supplicant *wpa_s = ctx;
 283         struct wpa_driver_scan_params *params = NULL;
 284         struct wpabuf *wps_ie, *ies;
 285         size_t ielen;
 286         u8 *n;
 287
 288         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
 289                 return -1;
 290
 291         if (wpa_s->p2p_scan_work) {
 292                 wpa_dbg(wpa_s, MSG_INFO, "P2P: Reject scan trigger since one is already pending");
 293                 return -1;
 294         }
 295
 296         params = os_zalloc(sizeof(*params));
 297         if (params == NULL)
 298                 return -1;
 299
 300         /* P2P Wildcard SSID */
 301         params->num_ssids = 1;
 302         n = os_malloc(P2P_WILDCARD_SSID_LEN);
 303         if (n == NULL)
 304                 goto fail;
 305         os_memcpy(n, P2P_WILDCARD_SSID, P2P_WILDCARD_SSID_LEN);
 306         params->ssids[0].ssid = n;
 307         params->ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
 308
 309         wpa_s->wps->dev.p2p = 1;
 310         wps_ie = wps_build_probe_req_ie(pw_id, &wpa_s->wps->dev,
 311                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE,
 312                                         num_req_dev_types, req_dev_types);
 313         if (wps_ie == NULL)
 314                 goto fail;
 315
 316         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
 317         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
 318         if (ies == NULL) {
 319                 wpabuf_free(wps_ie);
 320                 goto fail;
 321         }
 322         wpabuf_put_buf(ies, wps_ie);
 323         wpabuf_free(wps_ie);
 324
 325         p2p_scan_ie(wpa_s->global->p2p, ies, dev_id);
 326
 327         params->p2p_probe = 1;
 328         n = os_malloc(wpabuf_len(ies));
 329         if (n == NULL) {
 330                 wpabuf_free(ies);
 331                 goto fail;
 332         }
 333         os_memcpy(n, wpabuf_head(ies), wpabuf_len(ies));
 334         params->extra_ies = n;
 335         params->extra_ies_len = wpabuf_len(ies);
 336         wpabuf_free(ies);
 337
 338         switch (type) {
 339         case P2P_SCAN_SOCIAL:
 340                 params->freqs = os_malloc(4 * sizeof(int));
 341                 if (params->freqs == NULL)
 342                         goto fail;
 343                 params->freqs[0] = 2412;
 344                 params->freqs[1] = 2437;
 345                 params->freqs[2] = 2462;
 346                 params->freqs[3] = 0;
 347                 break;
 348         case P2P_SCAN_FULL:
 349                 break;
 350         case P2P_SCAN_SOCIAL_PLUS_ONE:
 351                 params->freqs = os_malloc(5 * sizeof(int));
 352                 if (params->freqs == NULL)
 353                         goto fail;
 354                 params->freqs[0] = 2412;
 355                 params->freqs[1] = 2437;
 356                 params->freqs[2] = 2462;
 357                 params->freqs[3] = freq;
 358                 params->freqs[4] = 0;
 359                 break;
 360         }
 361
 362         radio_remove_works(wpa_s, "p2p-scan", 0);
 363         if (radio_add_work(wpa_s, 0, "p2p-scan", 0, wpas_p2p_trigger_scan_cb,
 364                            params) < 0)
 365                 goto fail;
 366         return 0;
 367
 368 fail:
 369         wpa_scan_free_params(params);
 370         return -1;
 371 }
 372
 373
 374 static enum wpa_driver_if_type wpas_p2p_if_type(int p2p_group_interface)
 375 {
 376         switch (p2p_group_interface) {
 377         case P2P_GROUP_INTERFACE_PENDING:
 378                 return WPA_IF_P2P_GROUP;
 379         case P2P_GROUP_INTERFACE_GO:
 380                 return WPA_IF_P2P_GO;
 381         case P2P_GROUP_INTERFACE_CLIENT:
 382                 return WPA_IF_P2P_CLIENT;
 383         }
 384
 385         return WPA_IF_P2P_GROUP;
 386 }
 387
 388
 389 static struct wpa_supplicant * wpas_get_p2p_group(struct wpa_supplicant *wpa_s,
 390                                                   const u8 *ssid,
 391                                                   size_t ssid_len, int *go)
 392 {
 393         struct wpa_ssid *s;
 394
 395         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
 396                 for (s = wpa_s->conf->ssid; s; s = s->next) {
 397                         if (s->disabled != 0 || !s->p2p_group ||
 398                             s->ssid_len != ssid_len ||
 399                             os_memcmp(ssid, s->ssid, ssid_len) != 0)
 400                                 continue;
 401                         if (s->mode == WPAS_MODE_P2P_GO &&
 402                             s != wpa_s->current_ssid)
 403                                 continue;
 404                         if (go)
 405                                 *go = s->mode == WPAS_MODE_P2P_GO;
 406                         return wpa_s;
 407                 }
 408         }
 409
 410         return NULL;
 411 }
 412
 413
 414 static int wpas_p2p_group_delete(struct wpa_supplicant *wpa_s,
 415                                  enum p2p_group_removal_reason removal_reason)
 416 {
 417         struct wpa_ssid *ssid;
 418         char *gtype;
 419         const char *reason;
 420
 421         ssid = wpa_s->current_ssid;
 422         if (ssid == NULL) {
 423                 /*
 424                  * The current SSID was not known, but there may still be a
 425                  * pending P2P group interface waiting for provisioning or a
 426                  * P2P group that is trying to reconnect.
 427                  */
 428                 ssid = wpa_s->conf->ssid;
 429                 while (ssid) {
 430                         if (ssid->p2p_group && ssid->disabled != 2)
 431                                 break;
 432                         ssid = ssid->next;
 433                 }
 434                 if (ssid == NULL &&
 435                         wpa_s->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)
 436                 {
 437                         wpa_printf(MSG_ERROR, "P2P: P2P group interface "
 438                                    "not found");
 439                         return -1;
 440                 }
 441         }
 442         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO)
 443                 gtype = "GO";
 444         else if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT ||
 445                  (ssid && ssid->mode == WPAS_MODE_INFRA)) {
 446                 wpa_s->reassociate = 0;
 447                 wpa_s->disconnected = 1;
 448                 wpa_supplicant_deauthenticate(wpa_s,
 449                                               WLAN_REASON_DEAUTH_LEAVING);
 450                 gtype = "client";
 451         } else
 452                 gtype = "GO";
 453         if (wpa_s->cross_connect_in_use) {
 454                 wpa_s->cross_connect_in_use = 0;
 455                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 456                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
 457                                wpa_s->ifname, wpa_s->cross_connect_uplink);
 458         }
 459         switch (removal_reason) {
 460         case P2P_GROUP_REMOVAL_REQUESTED:
 461                 reason = " reason=REQUESTED";
 462                 break;
 463         case P2P_GROUP_REMOVAL_FORMATION_FAILED:
 464                 reason = " reason=FORMATION_FAILED";
 465                 break;
 466         case P2P_GROUP_REMOVAL_IDLE_TIMEOUT:
 467                 reason = " reason=IDLE";
 468                 break;
 469         case P2P_GROUP_REMOVAL_UNAVAILABLE:
 470                 reason = " reason=UNAVAILABLE";
 471                 break;
 472         case P2P_GROUP_REMOVAL_GO_ENDING_SESSION:
 473                 reason = " reason=GO_ENDING_SESSION";
 474                 break;
 475         case P2P_GROUP_REMOVAL_PSK_FAILURE:
 476                 reason = " reason=PSK_FAILURE";
 477                 break;
 478         case P2P_GROUP_REMOVAL_FREQ_CONFLICT:
 479                 reason = " reason=FREQ_CONFLICT";
 480                 break;
 481         default:
 482                 reason = "";
 483                 break;
 484         }
 485         if (removal_reason != P2P_GROUP_REMOVAL_SILENT) {
 486                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 487                                P2P_EVENT_GROUP_REMOVED "%s %s%s",
 488                                wpa_s->ifname, gtype, reason);
 489         }
 490
 491         if (eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL) > 0)
 492                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group freq_conflict timeout");
 493         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
 494                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
 495         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
 496                                  wpa_s->parent, NULL) > 0) {
 497                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group formation "
 498                            "timeout");
 499                 wpa_s->p2p_in_provisioning = 0;
 500         }
 501
 502         wpa_s->p2p_in_invitation = 0;
 503
 504         /*
 505          * Make sure wait for the first client does not remain active after the
 506          * group has been removed.
 507          */
 508         wpa_s->global->p2p_go_wait_client.sec = 0;
 509
 510         if (removal_reason != P2P_GROUP_REMOVAL_SILENT && ssid)
 511                 wpas_notify_p2p_group_removed(wpa_s, ssid, gtype);
 512
 513         if (wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE) {
 514                 struct wpa_global *global;
 515                 char *ifname;
 516                 enum wpa_driver_if_type type;
 517                 wpa_printf(MSG_DEBUG, "P2P: Remove group interface %s",
 518                         wpa_s->ifname);
 519                 global = wpa_s->global;
 520                 ifname = os_strdup(wpa_s->ifname);
 521                 type = wpas_p2p_if_type(wpa_s->p2p_group_interface);
 522                 wpa_supplicant_remove_iface(wpa_s->global, wpa_s, 0);
 523                 wpa_s = global->ifaces;
 524                 if (wpa_s && ifname)
 525                         wpa_drv_if_remove(wpa_s, type, ifname);
 526                 os_free(ifname);
 527                 return 1;
 528         }
 529
 530         if (!wpa_s->p2p_go_group_formation_completed) {
 531                 wpa_s->global->p2p_group_formation = NULL;
 532                 wpa_s->p2p_in_provisioning = 0;
 533         }
 534
 535         wpa_s->show_group_started = 0;
 536         os_free(wpa_s->go_params);
 537         wpa_s->go_params = NULL;
 538
 539         wpa_s->waiting_presence_resp = 0;
 540
 541         wpa_printf(MSG_DEBUG, "P2P: Remove temporary group network");
 542         if (ssid && (ssid->p2p_group ||
 543                      ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION ||
 544                      (ssid->key_mgmt & WPA_KEY_MGMT_WPS))) {
 545                 int id = ssid->id;
 546                 if (ssid == wpa_s->current_ssid) {
 547                         wpa_sm_set_config(wpa_s->wpa, NULL);
 548                         eapol_sm_notify_config(wpa_s->eapol, NULL, NULL);
 549                         wpa_s->current_ssid = NULL;
 550                 }
 551                 /*
 552                  * Networks objects created during any P2P activities are not
 553                  * exposed out as they might/will confuse certain non-P2P aware
 554                  * applications since these network objects won't behave like
 555                  * regular ones.
 556                  *
 557                  * Likewise, we don't send out network removed signals for such
 558                  * network objects.
 559                  */
 560                 wpa_config_remove_network(wpa_s->conf, id);
 561                 wpa_supplicant_clear_status(wpa_s);
 562                 wpa_supplicant_cancel_sched_scan(wpa_s);
 563         } else {
 564                 wpa_printf(MSG_DEBUG, "P2P: Temporary group network not "
 565                            "found");
 566         }
 567         if (wpa_s->ap_iface)
 568                 wpa_supplicant_ap_deinit(wpa_s);
 569         else
 570                 wpa_drv_deinit_p2p_cli(wpa_s);
 571
 572         return 0;
 573 }
 574
 575
 576 static int wpas_p2p_persistent_group(struct wpa_supplicant *wpa_s,
 577                                      u8 *go_dev_addr,
 578                                      const u8 *ssid, size_t ssid_len)
 579 {
 580         struct wpa_bss *bss;
 581         const u8 *bssid;
 582         struct wpabuf *p2p;
 583         u8 group_capab;
 584         const u8 *addr;
 585
 586         if (wpa_s->go_params)
 587                 bssid = wpa_s->go_params->peer_interface_addr;
 588         else
 589                 bssid = wpa_s->bssid;
 590
 591         bss = wpa_bss_get(wpa_s, bssid, ssid, ssid_len);
 592         if (bss == NULL && wpa_s->go_params &&
 593             !is_zero_ether_addr(wpa_s->go_params->peer_device_addr))
 594                 bss = wpa_bss_get_p2p_dev_addr(
 595                         wpa_s, wpa_s->go_params->peer_device_addr);
 596         if (bss == NULL) {
 597                 u8 iface_addr[ETH_ALEN];
 598                 if (p2p_get_interface_addr(wpa_s->global->p2p, bssid,
 599                                            iface_addr) == 0)
 600                         bss = wpa_bss_get(wpa_s, iface_addr, ssid, ssid_len);
 601         }
 602         if (bss == NULL) {
 603                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 604                            "group is persistent - BSS " MACSTR " not found",
 605                            MAC2STR(bssid));
 606                 return 0;
 607         }
 608
 609         p2p = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
 610         if (p2p == NULL)
 611                 p2p = wpa_bss_get_vendor_ie_multi_beacon(bss,
 612                                                          P2P_IE_VENDOR_TYPE);
 613         if (p2p == NULL) {
 614                 wpa_printf(MSG_DEBUG, "P2P: Could not figure out whether "
 615                            "group is persistent - BSS " MACSTR
 616                            " did not include P2P IE", MAC2STR(bssid));
 617                 wpa_hexdump(MSG_DEBUG, "P2P: Probe Response IEs",
 618                             (u8 *) (bss + 1), bss->ie_len);
 619                 wpa_hexdump(MSG_DEBUG, "P2P: Beacon IEs",
 620                             ((u8 *) bss + 1) + bss->ie_len,
 621                             bss->beacon_ie_len);
 622                 return 0;
 623         }
 624
 625         group_capab = p2p_get_group_capab(p2p);
 626         addr = p2p_get_go_dev_addr(p2p);
 627         wpa_printf(MSG_DEBUG, "P2P: Checking whether group is persistent: "
 628                    "group_capab=0x%x", group_capab);
 629         if (addr) {
 630                 os_memcpy(go_dev_addr, addr, ETH_ALEN);
 631                 wpa_printf(MSG_DEBUG, "P2P: GO Device Address " MACSTR,
 632                            MAC2STR(addr));
 633         } else
 634                 os_memset(go_dev_addr, 0, ETH_ALEN);
 635         wpabuf_free(p2p);
 636
 637         wpa_printf(MSG_DEBUG, "P2P: BSS " MACSTR " group_capab=0x%x "
 638                    "go_dev_addr=" MACSTR,
 639                    MAC2STR(bssid), group_capab, MAC2STR(go_dev_addr));
 640
 641         return group_capab & P2P_GROUP_CAPAB_PERSISTENT_GROUP;
 642 }
 643
 644
 645 static int wpas_p2p_store_persistent_group(struct wpa_supplicant *wpa_s,
 646                                            struct wpa_ssid *ssid,
 647                                            const u8 *go_dev_addr)
 648 {
 649         struct wpa_ssid *s;
 650         int changed = 0;
 651
 652         wpa_printf(MSG_DEBUG, "P2P: Storing credentials for a persistent "
 653                    "group (GO Dev Addr " MACSTR ")", MAC2STR(go_dev_addr));
 654         for (s = wpa_s->conf->ssid; s; s = s->next) {
 655                 if (s->disabled == 2 &&
 656                     os_memcmp(go_dev_addr, s->bssid, ETH_ALEN) == 0 &&
 657                     s->ssid_len == ssid->ssid_len &&
 658                     os_memcmp(ssid->ssid, s->ssid, ssid->ssid_len) == 0)
 659                         break;
 660         }
 661
 662         if (s) {
 663                 wpa_printf(MSG_DEBUG, "P2P: Update existing persistent group "
 664                            "entry");
 665                 if (ssid->passphrase && !s->passphrase)
 666                         changed = 1;
 667                 else if (ssid->passphrase && s->passphrase &&
 668                          os_strcmp(ssid->passphrase, s->passphrase) != 0)
 669                         changed = 1;
 670         } else {
 671                 wpa_printf(MSG_DEBUG, "P2P: Create a new persistent group "
 672                            "entry");
 673                 changed = 1;
 674                 s = wpa_config_add_network(wpa_s->conf);
 675                 if (s == NULL)
 676                         return -1;
 677
 678                 /*
 679                  * Instead of network_added we emit persistent_group_added
 680                  * notification. Also to keep the defense checks in
 681                  * persistent_group obj registration method, we set the
 682                  * relevant flags in s to designate it as a persistent group.
 683                  */
 684                 s->p2p_group = 1;
 685                 s->p2p_persistent_group = 1;
 686                 wpas_notify_persistent_group_added(wpa_s, s);
 687                 wpa_config_set_network_defaults(s);
 688         }
 689
 690         s->p2p_group = 1;
 691         s->p2p_persistent_group = 1;
 692         s->disabled = 2;
 693         s->bssid_set = 1;
 694         os_memcpy(s->bssid, go_dev_addr, ETH_ALEN);
 695         s->mode = ssid->mode;
 696         s->auth_alg = WPA_AUTH_ALG_OPEN;
 697         s->key_mgmt = WPA_KEY_MGMT_PSK;
 698         s->proto = WPA_PROTO_RSN;
 699         s->pairwise_cipher = WPA_CIPHER_CCMP;
 700         s->export_keys = 1;
 701         if (ssid->passphrase) {
 702                 os_free(s->passphrase);
 703                 s->passphrase = os_strdup(ssid->passphrase);
 704         }
 705         if (ssid->psk_set) {
 706                 s->psk_set = 1;
 707                 os_memcpy(s->psk, ssid->psk, 32);
 708         }
 709         if (s->passphrase && !s->psk_set)
 710                 wpa_config_update_psk(s);
 711         if (s->ssid == NULL || s->ssid_len < ssid->ssid_len) {
 712                 os_free(s->ssid);
 713                 s->ssid = os_malloc(ssid->ssid_len);
 714         }
 715         if (s->ssid) {
 716                 s->ssid_len = ssid->ssid_len;
 717                 os_memcpy(s->ssid, ssid->ssid, s->ssid_len);
 718         }
 719         if (ssid->mode == WPAS_MODE_P2P_GO && wpa_s->global->add_psk) {
 720                 dl_list_add(&s->psk_list, &wpa_s->global->add_psk->list);
 721                 wpa_s->global->add_psk = NULL;
 722                 changed = 1;
 723         }
 724
 725         if (changed && wpa_s->conf->update_config &&
 726             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
 727                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 728         }
 729
 730         return s->id;
 731 }
 732
 733
 734 static void wpas_p2p_add_persistent_group_client(struct wpa_supplicant *wpa_s,
 735                                                  const u8 *addr)
 736 {
 737         struct wpa_ssid *ssid, *s;
 738         u8 *n;
 739         size_t i;
 740         int found = 0;
 741
 742         ssid = wpa_s->current_ssid;
 743         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
 744             !ssid->p2p_persistent_group)
 745                 return;
 746
 747         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
 748                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
 749                         continue;
 750
 751                 if (s->ssid_len == ssid->ssid_len &&
 752                     os_memcmp(s->ssid, ssid->ssid, s->ssid_len) == 0)
 753                         break;
 754         }
 755
 756         if (s == NULL)
 757                 return;
 758
 759         for (i = 0; s->p2p_client_list && i < s->num_p2p_clients; i++) {
 760                 if (os_memcmp(s->p2p_client_list + i * ETH_ALEN, addr,
 761                               ETH_ALEN) != 0)
 762                         continue;
 763
 764                 if (i == s->num_p2p_clients - 1)
 765                         return; /* already the most recent entry */
 766
 767                 /* move the entry to mark it most recent */
 768                 os_memmove(s->p2p_client_list + i * ETH_ALEN,
 769                            s->p2p_client_list + (i + 1) * ETH_ALEN,
 770                            (s->num_p2p_clients - i - 1) * ETH_ALEN);
 771                 os_memcpy(s->p2p_client_list +
 772                           (s->num_p2p_clients - 1) * ETH_ALEN, addr, ETH_ALEN);
 773                 found = 1;
 774                 break;
 775         }
 776
 777         if (!found && s->num_p2p_clients < P2P_MAX_STORED_CLIENTS) {
 778                 n = os_realloc_array(s->p2p_client_list,
 779                                      s->num_p2p_clients + 1, ETH_ALEN);
 780                 if (n == NULL)
 781                         return;
 782                 os_memcpy(n + s->num_p2p_clients * ETH_ALEN, addr, ETH_ALEN);
 783                 s->p2p_client_list = n;
 784                 s->num_p2p_clients++;
 785         } else if (!found) {
 786                 /* Not enough room for an additional entry - drop the oldest
 787                  * entry */
 788                 os_memmove(s->p2p_client_list,
 789                            s->p2p_client_list + ETH_ALEN,
 790                            (s->num_p2p_clients - 1) * ETH_ALEN);
 791                 os_memcpy(s->p2p_client_list +
 792                           (s->num_p2p_clients - 1) * ETH_ALEN,
 793                           addr, ETH_ALEN);
 794         }
 795
 796         if (wpa_s->parent->conf->update_config &&
 797             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
 798                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
 799 }
 800
 801
 802 static void wpas_group_formation_completed(struct wpa_supplicant *wpa_s,
 803                                            int success)
 804 {
 805         struct wpa_ssid *ssid;
 806         const char *ssid_txt;
 807         int client;
 808         int persistent;
 809         u8 go_dev_addr[ETH_ALEN];
 810         int network_id = -1;
 811
 812         /*
 813          * This callback is likely called for the main interface. Update wpa_s
 814          * to use the group interface if a new interface was created for the
 815          * group.
 816          */
 817         if (wpa_s->global->p2p_group_formation)
 818                 wpa_s = wpa_s->global->p2p_group_formation;
 819         if (wpa_s->p2p_go_group_formation_completed) {
 820                 wpa_s->global->p2p_group_formation = NULL;
 821                 wpa_s->p2p_in_provisioning = 0;
 822         }
 823         wpa_s->p2p_in_invitation = 0;
 824
 825         if (!success) {
 826                 wpa_msg_global(wpa_s->parent, MSG_INFO,
 827                                P2P_EVENT_GROUP_FORMATION_FAILURE);
 828                 wpas_p2p_group_delete(wpa_s,
 829                                       P2P_GROUP_REMOVAL_FORMATION_FAILED);
 830                 return;
 831         }
 832
 833         wpa_msg_global(wpa_s->parent, MSG_INFO,
 834                        P2P_EVENT_GROUP_FORMATION_SUCCESS);
 835
 836         ssid = wpa_s->current_ssid;
 837         if (ssid && ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
 838                 ssid->mode = WPAS_MODE_P2P_GO;
 839                 p2p_group_notif_formation_done(wpa_s->p2p_group);
 840                 wpa_supplicant_ap_mac_addr_filter(wpa_s, NULL);
 841         }
 842
 843         persistent = 0;
 844         if (ssid) {
 845                 ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
 846                 client = ssid->mode == WPAS_MODE_INFRA;
 847                 if (ssid->mode == WPAS_MODE_P2P_GO) {
 848                         persistent = ssid->p2p_persistent_group;
 849                         os_memcpy(go_dev_addr, wpa_s->global->p2p_dev_addr,
 850                                   ETH_ALEN);
 851                 } else
 852                         persistent = wpas_p2p_persistent_group(wpa_s,
 853                                                                go_dev_addr,
 854                                                                ssid->ssid,
 855                                                                ssid->ssid_len);
 856         } else {
 857                 ssid_txt = "";
 858                 client = wpa_s->p2p_group_interface ==
 859                         P2P_GROUP_INTERFACE_CLIENT;
 860                 os_memset(go_dev_addr, 0, ETH_ALEN);
 861         }
 862
 863         wpa_s->show_group_started = 0;
 864         if (client) {
 865                 /*
 866                  * Indicate event only after successfully completed 4-way
 867                  * handshake, i.e., when the interface is ready for data
 868                  * packets.
 869                  */
 870                 wpa_s->show_group_started = 1;
 871         } else if (ssid && ssid->passphrase == NULL && ssid->psk_set) {
 872                 char psk[65];
 873                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
 874                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 875                                "%s GO ssid=\"%s\" freq=%d psk=%s go_dev_addr="
 876                                MACSTR "%s",
 877                                wpa_s->ifname, ssid_txt, ssid->frequency, psk,
 878                                MAC2STR(go_dev_addr),
 879                                persistent ? " [PERSISTENT]" : "");
 880                 wpas_p2p_cross_connect_setup(wpa_s);
 881                 wpas_p2p_set_group_idle_timeout(wpa_s);
 882         } else {
 883                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
 884                                "%s GO ssid=\"%s\" freq=%d passphrase=\"%s\" "
 885                                "go_dev_addr=" MACSTR "%s",
 886                                wpa_s->ifname, ssid_txt,
 887                                ssid ? ssid->frequency : 0,
 888                                ssid && ssid->passphrase ? ssid->passphrase : "",
 889                                MAC2STR(go_dev_addr),
 890                                persistent ? " [PERSISTENT]" : "");
 891                 wpas_p2p_cross_connect_setup(wpa_s);
 892                 wpas_p2p_set_group_idle_timeout(wpa_s);
 893         }
 894
 895         if (persistent)
 896                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
 897                                                              ssid, go_dev_addr);
 898         else {
 899                 os_free(wpa_s->global->add_psk);
 900                 wpa_s->global->add_psk = NULL;
 901         }
 902         if (network_id < 0 && ssid)
 903                 network_id = ssid->id;
 904         if (!client) {
 905                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
 906                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
 907         }
 908 }
 909
 910
 911 struct send_action_work {
 912         unsigned int freq;
 913         u8 dst[ETH_ALEN];
 914         u8 src[ETH_ALEN];
 915         u8 bssid[ETH_ALEN];
 916         size_t len;
 917         unsigned int wait_time;
 918         u8 buf[0];
 919 };
 920
 921
 922 static void wpas_p2p_send_action_work_timeout(void *eloop_ctx,
 923                                               void *timeout_ctx)
 924 {
 925         struct wpa_supplicant *wpa_s = eloop_ctx;
 926
 927         if (!wpa_s->p2p_send_action_work)
 928                 return;
 929
 930         wpa_printf(MSG_DEBUG, "P2P: Send Action frame radio work timed out");
 931         os_free(wpa_s->p2p_send_action_work->ctx);
 932         radio_work_done(wpa_s->p2p_send_action_work);
 933         wpa_s->p2p_send_action_work = NULL;
 934 }
 935
 936
 937 static void wpas_p2p_send_action_tx_status(struct wpa_supplicant *wpa_s,
 938                                            unsigned int freq,
 939                                            const u8 *dst, const u8 *src,
 940                                            const u8 *bssid,
 941                                            const u8 *data, size_t data_len,
 942                                            enum offchannel_send_action_result
 943                                            result)
 944 {
 945         enum p2p_send_action_result res = P2P_SEND_ACTION_SUCCESS;
 946
 947         if (wpa_s->p2p_send_action_work) {
 948                 struct send_action_work *awork;
 949                 awork = wpa_s->p2p_send_action_work->ctx;
 950                 if (awork->wait_time == 0) {
 951                         os_free(awork);
 952                         radio_work_done(wpa_s->p2p_send_action_work);
 953                         wpa_s->p2p_send_action_work = NULL;
 954                 } else {
 955                         /*
 956                          * In theory, this should not be needed, but number of
 957                          * places in the P2P code is still using non-zero wait
 958                          * time for the last Action frame in the sequence and
 959                          * some of these do not call send_action_done().
 960                          */
 961                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
 962                                              wpa_s, NULL);
 963                         eloop_register_timeout(
 964                                 0, awork->wait_time * 1000,
 965                                 wpas_p2p_send_action_work_timeout,
 966                                 wpa_s, NULL);
 967                 }
 968         }
 969
 970         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
 971                 return;
 972
 973         switch (result) {
 974         case OFFCHANNEL_SEND_ACTION_SUCCESS:
 975                 res = P2P_SEND_ACTION_SUCCESS;
 976                 break;
 977         case OFFCHANNEL_SEND_ACTION_NO_ACK:
 978                 res = P2P_SEND_ACTION_NO_ACK;
 979                 break;
 980         case OFFCHANNEL_SEND_ACTION_FAILED:
 981                 res = P2P_SEND_ACTION_FAILED;
 982                 break;
 983         }
 984
 985         p2p_send_action_cb(wpa_s->global->p2p, freq, dst, src, bssid, res);
 986
 987         if (result != OFFCHANNEL_SEND_ACTION_SUCCESS &&
 988             wpa_s->pending_pd_before_join &&
 989             (os_memcmp(dst, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
 990              os_memcmp(dst, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0) &&
 991             wpa_s->p2p_fallback_to_go_neg) {
 992                 wpa_s->pending_pd_before_join = 0;
 993                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No ACK for PD Req "
 994                         "during p2p_connect-auto");
 995                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
 996                 return;
 997         }
 998 }
 999
1000
1001 static void wpas_send_action_cb(struct wpa_radio_work *work, int deinit)
1002 {
1003         struct wpa_supplicant *wpa_s = work->wpa_s;
1004         struct send_action_work *awork = work->ctx;
1005
1006         if (deinit) {
1007                 if (work->started) {
1008                         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1009                                              wpa_s, NULL);
1010                         wpa_s->p2p_send_action_work = NULL;
1011                         offchannel_send_action_done(wpa_s);
1012                 }
1013                 os_free(awork);
1014                 return;
1015         }
1016
1017         if (offchannel_send_action(wpa_s, awork->freq, awork->dst, awork->src,
1018                                    awork->bssid, awork->buf, awork->len,
1019                                    awork->wait_time,
1020                                    wpas_p2p_send_action_tx_status, 1) < 0) {
1021                 os_free(awork);
1022                 radio_work_done(work);
1023                 return;
1024         }
1025         wpa_s->p2p_send_action_work = work;
1026 }
1027
1028
1029 static int wpas_send_action_work(struct wpa_supplicant *wpa_s,
1030                                  unsigned int freq, const u8 *dst,
1031                                  const u8 *src, const u8 *bssid, const u8 *buf,
1032                                  size_t len, unsigned int wait_time)
1033 {
1034         struct send_action_work *awork;
1035
1036         if (wpa_s->p2p_send_action_work) {
1037                 wpa_printf(MSG_DEBUG, "P2P: Cannot schedule new p2p-send-action work since one is already pending");
1038                 return -1;
1039         }
1040
1041         awork = os_zalloc(sizeof(*awork) + len);
1042         if (awork == NULL)
1043                 return -1;
1044
1045         awork->freq = freq;
1046         os_memcpy(awork->dst, dst, ETH_ALEN);
1047         os_memcpy(awork->src, src, ETH_ALEN);
1048         os_memcpy(awork->bssid, bssid, ETH_ALEN);
1049         awork->len = len;
1050         awork->wait_time = wait_time;
1051         os_memcpy(awork->buf, buf, len);
1052
1053         if (radio_add_work(wpa_s, freq, "p2p-send-action", 0,
1054                            wpas_send_action_cb, awork) < 0) {
1055                 os_free(awork);
1056                 return -1;
1057         }
1058
1059         return 0;
1060 }
1061
1062
1063 static int wpas_send_action(void *ctx, unsigned int freq, const u8 *dst,
1064                             const u8 *src, const u8 *bssid, const u8 *buf,
1065                             size_t len, unsigned int wait_time)
1066 {
1067         struct wpa_supplicant *wpa_s = ctx;
1068         int listen_freq = -1, send_freq = -1;
1069
1070         if (wpa_s->p2p_listen_work)
1071                 listen_freq = wpa_s->p2p_listen_work->freq;
1072         if (wpa_s->p2p_send_action_work)
1073                 send_freq = wpa_s->p2p_send_action_work->freq;
1074         if (listen_freq != (int) freq && send_freq != (int) freq) {
1075                 wpa_printf(MSG_DEBUG, "P2P: Schedule new radio work for Action frame TX (listen_freq=%d send_freq=%d)",
1076                            listen_freq, send_freq);
1077                 return wpas_send_action_work(wpa_s, freq, dst, src, bssid, buf,
1078                                              len, wait_time);
1079         }
1080
1081         wpa_printf(MSG_DEBUG, "P2P: Use ongoing radio work for Action frame TX");
1082         return offchannel_send_action(wpa_s, freq, dst, src, bssid, buf, len,
1083                                       wait_time,
1084                                       wpas_p2p_send_action_tx_status, 1);
1085 }
1086
1087
1088 static void wpas_send_action_done(void *ctx)
1089 {
1090         struct wpa_supplicant *wpa_s = ctx;
1091
1092         if (wpa_s->p2p_send_action_work) {
1093                 eloop_cancel_timeout(wpas_p2p_send_action_work_timeout,
1094                                      wpa_s, NULL);
1095                 os_free(wpa_s->p2p_send_action_work->ctx);
1096                 radio_work_done(wpa_s->p2p_send_action_work);
1097                 wpa_s->p2p_send_action_work = NULL;
1098         }
1099
1100         offchannel_send_action_done(wpa_s);
1101 }
1102
1103
1104 static int wpas_copy_go_neg_results(struct wpa_supplicant *wpa_s,
1105                                     struct p2p_go_neg_results *params)
1106 {
1107         if (wpa_s->go_params == NULL) {
1108                 wpa_s->go_params = os_malloc(sizeof(*params));
1109                 if (wpa_s->go_params == NULL)
1110                         return -1;
1111         }
1112         os_memcpy(wpa_s->go_params, params, sizeof(*params));
1113         return 0;
1114 }
1115
1116
1117 static void wpas_start_wps_enrollee(struct wpa_supplicant *wpa_s,
1118                                     struct p2p_go_neg_results *res)
1119 {
1120         wpa_printf(MSG_DEBUG, "P2P: Start WPS Enrollee for peer " MACSTR
1121                    " dev_addr " MACSTR " wps_method %d",
1122                    MAC2STR(res->peer_interface_addr),
1123                    MAC2STR(res->peer_device_addr), res->wps_method);
1124         wpa_hexdump_ascii(MSG_DEBUG, "P2P: Start WPS Enrollee for SSID",
1125                           res->ssid, res->ssid_len);
1126         wpa_supplicant_ap_deinit(wpa_s);
1127         wpas_copy_go_neg_results(wpa_s, res);
1128         if (res->wps_method == WPS_PBC) {
1129                 wpas_wps_start_pbc(wpa_s, res->peer_interface_addr, 1);
1130 #ifdef CONFIG_WPS_NFC
1131         } else if (res->wps_method == WPS_NFC) {
1132                 wpas_wps_start_nfc(wpa_s, res->peer_device_addr,
1133                                    res->peer_interface_addr,
1134                                    wpa_s->parent->p2p_oob_dev_pw,
1135                                    wpa_s->parent->p2p_oob_dev_pw_id, 1,
1136                                    wpa_s->parent->p2p_oob_dev_pw_id ==
1137                                    DEV_PW_NFC_CONNECTION_HANDOVER ?
1138                                    wpa_s->parent->p2p_peer_oob_pubkey_hash :
1139                                    NULL,
1140                                    NULL, 0, 0);
1141 #endif /* CONFIG_WPS_NFC */
1142         } else {
1143                 u16 dev_pw_id = DEV_PW_DEFAULT;
1144                 if (wpa_s->p2p_wps_method == WPS_PIN_KEYPAD)
1145                         dev_pw_id = DEV_PW_REGISTRAR_SPECIFIED;
1146                 wpas_wps_start_pin(wpa_s, res->peer_interface_addr,
1147                                    wpa_s->p2p_pin, 1, dev_pw_id);
1148         }
1149 }
1150
1151
1152 static void wpas_p2p_add_psk_list(struct wpa_supplicant *wpa_s,
1153                                   struct wpa_ssid *ssid)
1154 {
1155         struct wpa_ssid *persistent;
1156         struct psk_list_entry *psk;
1157         struct hostapd_data *hapd;
1158
1159         if (!wpa_s->ap_iface)
1160                 return;
1161
1162         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
1163                                              ssid->ssid_len);
1164         if (persistent == NULL)
1165                 return;
1166
1167         hapd = wpa_s->ap_iface->bss[0];
1168
1169         dl_list_for_each(psk, &persistent->psk_list, struct psk_list_entry,
1170                          list) {
1171                 struct hostapd_wpa_psk *hpsk;
1172
1173                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add persistent group PSK entry for "
1174                         MACSTR " psk=%d",
1175                         MAC2STR(psk->addr), psk->p2p);
1176                 hpsk = os_zalloc(sizeof(*hpsk));
1177                 if (hpsk == NULL)
1178                         break;
1179                 os_memcpy(hpsk->psk, psk->psk, PMK_LEN);
1180                 if (psk->p2p)
1181                         os_memcpy(hpsk->p2p_dev_addr, psk->addr, ETH_ALEN);
1182                 else
1183                         os_memcpy(hpsk->addr, psk->addr, ETH_ALEN);
1184                 hpsk->next = hapd->conf->ssid.wpa_psk;
1185                 hapd->conf->ssid.wpa_psk = hpsk;
1186         }
1187 }
1188
1189
1190 static void p2p_go_configured(void *ctx, void *data)
1191 {
1192         struct wpa_supplicant *wpa_s = ctx;
1193         struct p2p_go_neg_results *params = data;
1194         struct wpa_ssid *ssid;
1195         int network_id = -1;
1196
1197         ssid = wpa_s->current_ssid;
1198         if (ssid && ssid->mode == WPAS_MODE_P2P_GO) {
1199                 wpa_printf(MSG_DEBUG, "P2P: Group setup without provisioning");
1200                 if (wpa_s->global->p2p_group_formation == wpa_s)
1201                         wpa_s->global->p2p_group_formation = NULL;
1202                 if (os_strlen(params->passphrase) > 0) {
1203                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1204                                        P2P_EVENT_GROUP_STARTED
1205                                        "%s GO ssid=\"%s\" freq=%d "
1206                                        "passphrase=\"%s\" go_dev_addr=" MACSTR
1207                                        "%s", wpa_s->ifname,
1208                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1209                                        ssid->frequency, params->passphrase,
1210                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1211                                        params->persistent_group ?
1212                                        " [PERSISTENT]" : "");
1213                 } else {
1214                         char psk[65];
1215                         wpa_snprintf_hex(psk, sizeof(psk), params->psk,
1216                                          sizeof(params->psk));
1217                         wpa_msg_global(wpa_s->parent, MSG_INFO,
1218                                        P2P_EVENT_GROUP_STARTED
1219                                        "%s GO ssid=\"%s\" freq=%d psk=%s "
1220                                        "go_dev_addr=" MACSTR "%s",
1221                                        wpa_s->ifname,
1222                                        wpa_ssid_txt(ssid->ssid, ssid->ssid_len),
1223                                        ssid->frequency, psk,
1224                                        MAC2STR(wpa_s->global->p2p_dev_addr),
1225                                        params->persistent_group ?
1226                                        " [PERSISTENT]" : "");
1227                 }
1228
1229                 os_get_reltime(&wpa_s->global->p2p_go_wait_client);
1230                 if (params->persistent_group) {
1231                         network_id = wpas_p2p_store_persistent_group(
1232                                 wpa_s->parent, ssid,
1233                                 wpa_s->global->p2p_dev_addr);
1234                         wpas_p2p_add_psk_list(wpa_s, ssid);
1235                 }
1236                 if (network_id < 0)
1237                         network_id = ssid->id;
1238                 wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 0);
1239                 wpas_p2p_cross_connect_setup(wpa_s);
1240                 wpas_p2p_set_group_idle_timeout(wpa_s);
1241
1242                 if (wpa_s->p2p_first_connection_timeout) {
1243                         wpa_dbg(wpa_s, MSG_DEBUG,
1244                                 "P2P: Start group formation timeout of %d seconds until first data connection on GO",
1245                                 wpa_s->p2p_first_connection_timeout);
1246                         wpa_s->p2p_go_group_formation_completed = 0;
1247                         wpa_s->global->p2p_group_formation = wpa_s;
1248                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1249                                              wpa_s->parent, NULL);
1250                         eloop_register_timeout(
1251                                 wpa_s->p2p_first_connection_timeout, 0,
1252                                 wpas_p2p_group_formation_timeout,
1253                                 wpa_s->parent, NULL);
1254                 }
1255
1256                 return;
1257         }
1258
1259         wpa_printf(MSG_DEBUG, "P2P: Setting up WPS for GO provisioning");
1260         if (wpa_supplicant_ap_mac_addr_filter(wpa_s,
1261                                               params->peer_interface_addr)) {
1262                 wpa_printf(MSG_DEBUG, "P2P: Failed to setup MAC address "
1263                            "filtering");
1264                 return;
1265         }
1266         if (params->wps_method == WPS_PBC) {
1267                 wpa_supplicant_ap_wps_pbc(wpa_s, params->peer_interface_addr,
1268                                           params->peer_device_addr);
1269 #ifdef CONFIG_WPS_NFC
1270         } else if (params->wps_method == WPS_NFC) {
1271                 if (wpa_s->parent->p2p_oob_dev_pw_id !=
1272                     DEV_PW_NFC_CONNECTION_HANDOVER &&
1273                     !wpa_s->parent->p2p_oob_dev_pw) {
1274                         wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
1275                         return;
1276                 }
1277                 wpas_ap_wps_add_nfc_pw(
1278                         wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
1279                         wpa_s->parent->p2p_oob_dev_pw,
1280                         wpa_s->parent->p2p_peer_oob_pk_hash_known ?
1281                         wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
1282 #endif /* CONFIG_WPS_NFC */
1283         } else if (wpa_s->p2p_pin[0])
1284                 wpa_supplicant_ap_wps_pin(wpa_s, params->peer_interface_addr,
1285                                           wpa_s->p2p_pin, NULL, 0, 0);
1286         os_free(wpa_s->go_params);
1287         wpa_s->go_params = NULL;
1288 }
1289
1290
1291 static void wpas_start_wps_go(struct wpa_supplicant *wpa_s,
1292                               struct p2p_go_neg_results *params,
1293                               int group_formation)
1294 {
1295         struct wpa_ssid *ssid;
1296
1297         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Starting GO");
1298         if (wpas_copy_go_neg_results(wpa_s, params) < 0) {
1299                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not copy GO Negotiation "
1300                         "results");
1301                 return;
1302         }
1303
1304         ssid = wpa_config_add_network(wpa_s->conf);
1305         if (ssid == NULL) {
1306                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not add network for GO");
1307                 return;
1308         }
1309
1310         wpa_s->show_group_started = 0;
1311
1312         wpa_config_set_network_defaults(ssid);
1313         ssid->temporary = 1;
1314         ssid->p2p_group = 1;
1315         ssid->p2p_persistent_group = params->persistent_group;
1316         ssid->mode = group_formation ? WPAS_MODE_P2P_GROUP_FORMATION :
1317                 WPAS_MODE_P2P_GO;
1318         ssid->frequency = params->freq;
1319         ssid->ht40 = params->ht40;
1320         ssid->vht = params->vht;
1321         ssid->ssid = os_zalloc(params->ssid_len + 1);
1322         if (ssid->ssid) {
1323                 os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
1324                 ssid->ssid_len = params->ssid_len;
1325         }
1326         ssid->auth_alg = WPA_AUTH_ALG_OPEN;
1327         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
1328         ssid->proto = WPA_PROTO_RSN;
1329         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
1330         if (os_strlen(params->passphrase) > 0) {
1331                 ssid->passphrase = os_strdup(params->passphrase);
1332                 if (ssid->passphrase == NULL) {
1333                         wpa_msg_global(wpa_s, MSG_ERROR,
1334                                        "P2P: Failed to copy passphrase for GO");
1335                         wpa_config_remove_network(wpa_s->conf, ssid->id);
1336                         return;
1337                 }
1338         } else
1339                 ssid->passphrase = NULL;
1340         ssid->psk_set = params->psk_set;
1341         if (ssid->psk_set)
1342                 os_memcpy(ssid->psk, params->psk, sizeof(ssid->psk));
1343         else if (ssid->passphrase)
1344                 wpa_config_update_psk(ssid);
1345         ssid->ap_max_inactivity = wpa_s->parent->conf->p2p_go_max_inactivity;
1346
1347         wpa_s->ap_configured_cb = p2p_go_configured;
1348         wpa_s->ap_configured_cb_ctx = wpa_s;
1349         wpa_s->ap_configured_cb_data = wpa_s->go_params;
1350         wpa_s->scan_req = NORMAL_SCAN_REQ;
1351         wpa_s->connect_without_scan = ssid;
1352         wpa_s->reassociate = 1;
1353         wpa_s->disconnected = 0;
1354         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Request scan (that will be skipped) to "
1355                 "start GO)");
1356         wpa_supplicant_req_scan(wpa_s, 0, 0);
1357 }
1358
1359
1360 static void wpas_p2p_clone_config(struct wpa_supplicant *dst,
1361                                   const struct wpa_supplicant *src)
1362 {
1363         struct wpa_config *d;
1364         const struct wpa_config *s;
1365
1366         d = dst->conf;
1367         s = src->conf;
1368
1369 #define C(n) if (s->n) d->n = os_strdup(s->n)
1370         C(device_name);
1371         C(manufacturer);
1372         C(model_name);
1373         C(model_number);
1374         C(serial_number);
1375         C(config_methods);
1376 #undef C
1377
1378         os_memcpy(d->device_type, s->device_type, WPS_DEV_TYPE_LEN);
1379         os_memcpy(d->sec_device_type, s->sec_device_type,
1380                   sizeof(d->sec_device_type));
1381         d->num_sec_device_types = s->num_sec_device_types;
1382
1383         d->p2p_group_idle = s->p2p_group_idle;
1384         d->p2p_intra_bss = s->p2p_intra_bss;
1385         d->persistent_reconnect = s->persistent_reconnect;
1386         d->max_num_sta = s->max_num_sta;
1387         d->pbc_in_m1 = s->pbc_in_m1;
1388         d->ignore_old_scan_res = s->ignore_old_scan_res;
1389         d->beacon_int = s->beacon_int;
1390         d->dtim_period = s->dtim_period;
1391         d->disassoc_low_ack = s->disassoc_low_ack;
1392         d->disable_scan_offload = s->disable_scan_offload;
1393
1394         if (s->wps_nfc_dh_privkey && s->wps_nfc_dh_pubkey) {
1395                 d->wps_nfc_dh_privkey = wpabuf_dup(s->wps_nfc_dh_privkey);
1396                 d->wps_nfc_dh_pubkey = wpabuf_dup(s->wps_nfc_dh_pubkey);
1397         }
1398 }
1399
1400
1401 static void wpas_p2p_get_group_ifname(struct wpa_supplicant *wpa_s,
1402                                       char *ifname, size_t len)
1403 {
1404         char *ifname_ptr = wpa_s->ifname;
1405
1406         if (os_strncmp(wpa_s->ifname, P2P_MGMT_DEVICE_PREFIX,
1407                        os_strlen(P2P_MGMT_DEVICE_PREFIX)) == 0) {
1408                 ifname_ptr = os_strrchr(wpa_s->ifname, '-') + 1;
1409         }
1410
1411         os_snprintf(ifname, len, "p2p-%s-%d", ifname_ptr, wpa_s->p2p_group_idx);
1412         if (os_strlen(ifname) >= IFNAMSIZ &&
1413             os_strlen(wpa_s->ifname) < IFNAMSIZ) {
1414                 /* Try to avoid going over the IFNAMSIZ length limit */
1415                 os_snprintf(ifname, len, "p2p-%d", wpa_s->p2p_group_idx);
1416         }
1417 }
1418
1419
1420 static int wpas_p2p_add_group_interface(struct wpa_supplicant *wpa_s,
1421                                         enum wpa_driver_if_type type)
1422 {
1423         char ifname[120], force_ifname[120];
1424
1425         if (wpa_s->pending_interface_name[0]) {
1426                 wpa_printf(MSG_DEBUG, "P2P: Pending virtual interface exists "
1427                            "- skip creation of a new one");
1428                 if (is_zero_ether_addr(wpa_s->pending_interface_addr)) {
1429                         wpa_printf(MSG_DEBUG, "P2P: Pending virtual address "
1430                                    "unknown?! ifname='%s'",
1431                                    wpa_s->pending_interface_name);
1432                         return -1;
1433                 }
1434                 return 0;
1435         }
1436
1437         wpas_p2p_get_group_ifname(wpa_s, ifname, sizeof(ifname));
1438         force_ifname[0] = '\0';
1439
1440         wpa_printf(MSG_DEBUG, "P2P: Create a new interface %s for the group",
1441                    ifname);
1442         wpa_s->p2p_group_idx++;
1443
1444         wpa_s->pending_interface_type = type;
1445         if (wpa_drv_if_add(wpa_s, type, ifname, NULL, NULL, force_ifname,
1446                            wpa_s->pending_interface_addr, NULL) < 0) {
1447                 wpa_printf(MSG_ERROR, "P2P: Failed to create new group "
1448                            "interface");
1449                 return -1;
1450         }
1451
1452         if (force_ifname[0]) {
1453                 wpa_printf(MSG_DEBUG, "P2P: Driver forced interface name %s",
1454                            force_ifname);
1455                 os_strlcpy(wpa_s->pending_interface_name, force_ifname,
1456                            sizeof(wpa_s->pending_interface_name));
1457         } else
1458                 os_strlcpy(wpa_s->pending_interface_name, ifname,
1459                            sizeof(wpa_s->pending_interface_name));
1460         wpa_printf(MSG_DEBUG, "P2P: Created pending virtual interface %s addr "
1461                    MACSTR, wpa_s->pending_interface_name,
1462                    MAC2STR(wpa_s->pending_interface_addr));
1463
1464         return 0;
1465 }
1466
1467
1468 static void wpas_p2p_remove_pending_group_interface(
1469         struct wpa_supplicant *wpa_s)
1470 {
1471         if (!wpa_s->pending_interface_name[0] ||
1472             is_zero_ether_addr(wpa_s->pending_interface_addr))
1473                 return; /* No pending virtual interface */
1474
1475         wpa_printf(MSG_DEBUG, "P2P: Removing pending group interface %s",
1476                    wpa_s->pending_interface_name);
1477         wpa_drv_if_remove(wpa_s, wpa_s->pending_interface_type,
1478                           wpa_s->pending_interface_name);
1479         os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1480         wpa_s->pending_interface_name[0] = '\0';
1481 }
1482
1483
1484 static struct wpa_supplicant *
1485 wpas_p2p_init_group_interface(struct wpa_supplicant *wpa_s, int go)
1486 {
1487         struct wpa_interface iface;
1488         struct wpa_supplicant *group_wpa_s;
1489
1490         if (!wpa_s->pending_interface_name[0]) {
1491                 wpa_printf(MSG_ERROR, "P2P: No pending group interface");
1492                 if (!wpas_p2p_create_iface(wpa_s))
1493                         return NULL;
1494                 /*
1495                  * Something has forced us to remove the pending interface; try
1496                  * to create a new one and hope for the best that we will get
1497                  * the same local address.
1498                  */
1499                 if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
1500                                                  WPA_IF_P2P_CLIENT) < 0)
1501                         return NULL;
1502         }
1503
1504         os_memset(&iface, 0, sizeof(iface));
1505         iface.ifname = wpa_s->pending_interface_name;
1506         iface.driver = wpa_s->driver->name;
1507         if (wpa_s->conf->ctrl_interface == NULL &&
1508             wpa_s->parent != wpa_s &&
1509             wpa_s->p2p_mgmt &&
1510             (wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE))
1511                 iface.ctrl_interface = wpa_s->parent->conf->ctrl_interface;
1512         else
1513                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
1514         iface.driver_param = wpa_s->conf->driver_param;
1515         group_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
1516         if (group_wpa_s == NULL) {
1517                 wpa_printf(MSG_ERROR, "P2P: Failed to create new "
1518                            "wpa_supplicant interface");
1519                 return NULL;
1520         }
1521         wpa_s->pending_interface_name[0] = '\0';
1522         group_wpa_s->parent = wpa_s;
1523         group_wpa_s->p2p_group_interface = go ? P2P_GROUP_INTERFACE_GO :
1524                 P2P_GROUP_INTERFACE_CLIENT;
1525         wpa_s->global->p2p_group_formation = group_wpa_s;
1526
1527         wpas_p2p_clone_config(group_wpa_s, wpa_s);
1528
1529         return group_wpa_s;
1530 }
1531
1532
1533 static void wpas_p2p_group_formation_timeout(void *eloop_ctx,
1534                                              void *timeout_ctx)
1535 {
1536         struct wpa_supplicant *wpa_s = eloop_ctx;
1537         wpa_printf(MSG_DEBUG, "P2P: Group Formation timed out");
1538         wpas_p2p_group_formation_failed(wpa_s);
1539 }
1540
1541
1542 void wpas_p2p_group_formation_failed(struct wpa_supplicant *wpa_s)
1543 {
1544         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1545                              wpa_s->parent, NULL);
1546         if (wpa_s->global->p2p)
1547                 p2p_group_formation_failed(wpa_s->global->p2p);
1548         wpas_group_formation_completed(wpa_s, 0);
1549 }
1550
1551
1552 static void wpas_p2p_grpform_fail_after_wps(struct wpa_supplicant *wpa_s)
1553 {
1554         wpa_printf(MSG_DEBUG, "P2P: Reject group formation due to WPS provisioning failure");
1555         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1556                              wpa_s->parent, NULL);
1557         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1558                                wpa_s->parent, NULL);
1559         wpa_s->global->p2p_fail_on_wps_complete = 0;
1560 }
1561
1562
1563 void wpas_p2p_ap_setup_failed(struct wpa_supplicant *wpa_s)
1564 {
1565         if (wpa_s->global->p2p_group_formation != wpa_s)
1566                 return;
1567         /* Speed up group formation timeout since this cannot succeed */
1568         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
1569                              wpa_s->parent, NULL);
1570         eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
1571                                wpa_s->parent, NULL);
1572 }
1573
1574
1575 static void wpas_go_neg_completed(void *ctx, struct p2p_go_neg_results *res)
1576 {
1577         struct wpa_supplicant *wpa_s = ctx;
1578
1579         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1580                 wpa_drv_cancel_remain_on_channel(wpa_s);
1581                 wpa_s->off_channel_freq = 0;
1582                 wpa_s->roc_waiting_drv_freq = 0;
1583         }
1584
1585         if (res->status) {
1586                 wpa_msg_global(wpa_s, MSG_INFO,
1587                                P2P_EVENT_GO_NEG_FAILURE "status=%d",
1588                                res->status);
1589                 wpas_notify_p2p_go_neg_completed(wpa_s, res);
1590                 wpas_p2p_remove_pending_group_interface(wpa_s);
1591                 return;
1592         }
1593
1594         if (wpa_s->p2p_go_ht40)
1595                 res->ht40 = 1;
1596         if (wpa_s->p2p_go_vht)
1597                 res->vht = 1;
1598
1599         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_SUCCESS "role=%s "
1600                        "freq=%d ht40=%d peer_dev=" MACSTR " peer_iface=" MACSTR
1601                        " wps_method=%s",
1602                        res->role_go ? "GO" : "client", res->freq, res->ht40,
1603                        MAC2STR(res->peer_device_addr),
1604                        MAC2STR(res->peer_interface_addr),
1605                        p2p_wps_method_text(res->wps_method));
1606         wpas_notify_p2p_go_neg_completed(wpa_s, res);
1607
1608         if (res->role_go && wpa_s->p2p_persistent_id >= 0) {
1609                 struct wpa_ssid *ssid;
1610                 ssid = wpa_config_get_network(wpa_s->conf,
1611                                               wpa_s->p2p_persistent_id);
1612                 if (ssid && ssid->disabled == 2 &&
1613                     ssid->mode == WPAS_MODE_P2P_GO && ssid->passphrase) {
1614                         size_t len = os_strlen(ssid->passphrase);
1615                         wpa_printf(MSG_DEBUG, "P2P: Override passphrase based "
1616                                    "on requested persistent group");
1617                         os_memcpy(res->passphrase, ssid->passphrase, len);
1618                         res->passphrase[len] = '\0';
1619                 }
1620         }
1621
1622         if (wpa_s->create_p2p_iface) {
1623                 struct wpa_supplicant *group_wpa_s =
1624                         wpas_p2p_init_group_interface(wpa_s, res->role_go);
1625                 if (group_wpa_s == NULL) {
1626                         wpas_p2p_remove_pending_group_interface(wpa_s);
1627                         eloop_cancel_timeout(wpas_p2p_long_listen_timeout,
1628                                              wpa_s, NULL);
1629                         wpas_p2p_group_formation_failed(wpa_s);
1630                         return;
1631                 }
1632                 if (group_wpa_s != wpa_s) {
1633                         os_memcpy(group_wpa_s->p2p_pin, wpa_s->p2p_pin,
1634                                   sizeof(group_wpa_s->p2p_pin));
1635                         group_wpa_s->p2p_wps_method = wpa_s->p2p_wps_method;
1636                 }
1637                 os_memset(wpa_s->pending_interface_addr, 0, ETH_ALEN);
1638                 wpa_s->pending_interface_name[0] = '\0';
1639                 group_wpa_s->p2p_in_provisioning = 1;
1640
1641                 if (res->role_go)
1642                         wpas_start_wps_go(group_wpa_s, res, 1);
1643                 else
1644                         wpas_start_wps_enrollee(group_wpa_s, res);
1645         } else {
1646                 wpa_s->p2p_in_provisioning = 1;
1647                 wpa_s->global->p2p_group_formation = wpa_s;
1648
1649                 if (res->role_go)
1650                         wpas_start_wps_go(wpa_s, res, 1);
1651                 else
1652                         wpas_start_wps_enrollee(ctx, res);
1653         }
1654
1655         wpa_s->p2p_long_listen = 0;
1656         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
1657
1658         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
1659         eloop_register_timeout(15 + res->peer_config_timeout / 100,
1660                                (res->peer_config_timeout % 100) * 10000,
1661                                wpas_p2p_group_formation_timeout, wpa_s, NULL);
1662 }
1663
1664
1665 static void wpas_go_neg_req_rx(void *ctx, const u8 *src, u16 dev_passwd_id)
1666 {
1667         struct wpa_supplicant *wpa_s = ctx;
1668         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_GO_NEG_REQUEST MACSTR
1669                        " dev_passwd_id=%u", MAC2STR(src), dev_passwd_id);
1670
1671         wpas_notify_p2p_go_neg_req(wpa_s, src, dev_passwd_id);
1672 }
1673
1674
1675 static void wpas_dev_found(void *ctx, const u8 *addr,
1676                            const struct p2p_peer_info *info,
1677                            int new_device)
1678 {
1679 #ifndef CONFIG_NO_STDOUT_DEBUG
1680         struct wpa_supplicant *wpa_s = ctx;
1681         char devtype[WPS_DEV_TYPE_BUFSIZE];
1682         char *wfd_dev_info_hex = NULL;
1683
1684 #ifdef CONFIG_WIFI_DISPLAY
1685         wfd_dev_info_hex = wifi_display_subelem_hex(info->wfd_subelems,
1686                                                     WFD_SUBELEM_DEVICE_INFO);
1687 #endif /* CONFIG_WIFI_DISPLAY */
1688
1689         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_FOUND MACSTR
1690                        " p2p_dev_addr=" MACSTR
1691                        " pri_dev_type=%s name='%s' config_methods=0x%x "
1692                        "dev_capab=0x%x group_capab=0x%x%s%s",
1693                        MAC2STR(addr), MAC2STR(info->p2p_device_addr),
1694                        wps_dev_type_bin2str(info->pri_dev_type, devtype,
1695                                             sizeof(devtype)),
1696                        info->device_name, info->config_methods,
1697                        info->dev_capab, info->group_capab,
1698                        wfd_dev_info_hex ? " wfd_dev_info=0x" : "",
1699                        wfd_dev_info_hex ? wfd_dev_info_hex : "");
1700
1701         os_free(wfd_dev_info_hex);
1702 #endif /* CONFIG_NO_STDOUT_DEBUG */
1703
1704         wpas_notify_p2p_device_found(ctx, info->p2p_device_addr, new_device);
1705 }
1706
1707
1708 static void wpas_dev_lost(void *ctx, const u8 *dev_addr)
1709 {
1710         struct wpa_supplicant *wpa_s = ctx;
1711
1712         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_DEVICE_LOST
1713                        "p2p_dev_addr=" MACSTR, MAC2STR(dev_addr));
1714
1715         wpas_notify_p2p_device_lost(wpa_s, dev_addr);
1716 }
1717
1718
1719 static void wpas_find_stopped(void *ctx)
1720 {
1721         struct wpa_supplicant *wpa_s = ctx;
1722         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_FIND_STOPPED);
1723 }
1724
1725
1726 struct wpas_p2p_listen_work {
1727         unsigned int freq;
1728         unsigned int duration;
1729         struct wpabuf *probe_resp_ie;
1730 };
1731
1732
1733 static void wpas_p2p_listen_work_free(struct wpas_p2p_listen_work *lwork)
1734 {
1735         if (lwork == NULL)
1736                 return;
1737         wpabuf_free(lwork->probe_resp_ie);
1738         os_free(lwork);
1739 }
1740
1741
1742 static void wpas_p2p_listen_work_done(struct wpa_supplicant *wpa_s)
1743 {
1744         struct wpas_p2p_listen_work *lwork;
1745
1746         if (!wpa_s->p2p_listen_work)
1747                 return;
1748
1749         lwork = wpa_s->p2p_listen_work->ctx;
1750         wpas_p2p_listen_work_free(lwork);
1751         radio_work_done(wpa_s->p2p_listen_work);
1752         wpa_s->p2p_listen_work = NULL;
1753 }
1754
1755
1756 static void wpas_start_listen_cb(struct wpa_radio_work *work, int deinit)
1757 {
1758         struct wpa_supplicant *wpa_s = work->wpa_s;
1759         struct wpas_p2p_listen_work *lwork = work->ctx;
1760
1761         if (deinit) {
1762                 if (work->started) {
1763                         wpa_s->p2p_listen_work = NULL;
1764                         wpas_stop_listen(wpa_s);
1765                 }
1766                 wpas_p2p_listen_work_free(lwork);
1767                 return;
1768         }
1769
1770         wpa_s->p2p_listen_work = work;
1771
1772         wpa_drv_set_ap_wps_ie(wpa_s, NULL, lwork->probe_resp_ie, NULL);
1773
1774         if (wpa_drv_probe_req_report(wpa_s, 1) < 0) {
1775                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver to "
1776                            "report received Probe Request frames");
1777                 wpas_p2p_listen_work_done(wpa_s);
1778                 return;
1779         }
1780
1781         wpa_s->pending_listen_freq = lwork->freq;
1782         wpa_s->pending_listen_duration = lwork->duration;
1783
1784         if (wpa_drv_remain_on_channel(wpa_s, lwork->freq, lwork->duration) < 0)
1785         {
1786                 wpa_printf(MSG_DEBUG, "P2P: Failed to request the driver "
1787                            "to remain on channel (%u MHz) for Listen "
1788                            "state", lwork->freq);
1789                 wpas_p2p_listen_work_done(wpa_s);
1790                 wpa_s->pending_listen_freq = 0;
1791                 return;
1792         }
1793         wpa_s->off_channel_freq = 0;
1794         wpa_s->roc_waiting_drv_freq = lwork->freq;
1795 }
1796
1797
1798 static int wpas_start_listen(void *ctx, unsigned int freq,
1799                              unsigned int duration,
1800                              const struct wpabuf *probe_resp_ie)
1801 {
1802         struct wpa_supplicant *wpa_s = ctx;
1803         struct wpas_p2p_listen_work *lwork;
1804
1805         if (wpa_s->p2p_listen_work) {
1806                 wpa_printf(MSG_DEBUG, "P2P: Reject start_listen since p2p_listen_work already exists");
1807                 return -1;
1808         }
1809
1810         lwork = os_zalloc(sizeof(*lwork));
1811         if (lwork == NULL)
1812                 return -1;
1813         lwork->freq = freq;
1814         lwork->duration = duration;
1815         if (probe_resp_ie) {
1816                 lwork->probe_resp_ie = wpabuf_dup(probe_resp_ie);
1817                 if (lwork->probe_resp_ie == NULL) {
1818                         wpas_p2p_listen_work_free(lwork);
1819                         return -1;
1820                 }
1821         }
1822
1823         if (radio_add_work(wpa_s, freq, "p2p-listen", 0, wpas_start_listen_cb,
1824                            lwork) < 0) {
1825                 wpas_p2p_listen_work_free(lwork);
1826                 return -1;
1827         }
1828
1829         return 0;
1830 }
1831
1832
1833 static void wpas_stop_listen(void *ctx)
1834 {
1835         struct wpa_supplicant *wpa_s = ctx;
1836         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
1837                 wpa_drv_cancel_remain_on_channel(wpa_s);
1838                 wpa_s->off_channel_freq = 0;
1839                 wpa_s->roc_waiting_drv_freq = 0;
1840         }
1841         wpa_drv_set_ap_wps_ie(wpa_s, NULL, NULL, NULL);
1842         wpa_drv_probe_req_report(wpa_s, 0);
1843         wpas_p2p_listen_work_done(wpa_s);
1844 }
1845
1846
1847 static int wpas_send_probe_resp(void *ctx, const struct wpabuf *buf)
1848 {
1849         struct wpa_supplicant *wpa_s = ctx;
1850         return wpa_drv_send_mlme(wpa_s, wpabuf_head(buf), wpabuf_len(buf), 1);
1851 }
1852
1853
1854 /*
1855  * DNS Header section is used only to calculate compression pointers, so the
1856  * contents of this data does not matter, but the length needs to be reserved
1857  * in the virtual packet.
1858  */
1859 #define DNS_HEADER_LEN 12
1860
1861 /*
1862  * 27-octet in-memory packet from P2P specification containing two implied
1863  * queries for _tcp.lcoal. PTR IN and _udp.local. PTR IN
1864  */
1865 #define P2P_SD_IN_MEMORY_LEN 27
1866
1867 static int p2p_sd_dns_uncompress_label(char **upos, char *uend, u8 *start,
1868                                        u8 **spos, const u8 *end)
1869 {
1870         while (*spos < end) {
1871                 u8 val = ((*spos)[0] & 0xc0) >> 6;
1872                 int len;
1873
1874                 if (val == 1 || val == 2) {
1875                         /* These are reserved values in RFC 1035 */
1876                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1877                                    "sequence starting with 0x%x", val);
1878                         return -1;
1879                 }
1880
1881                 if (val == 3) {
1882                         u16 offset;
1883                         u8 *spos_tmp;
1884
1885                         /* Offset */
1886                         if (*spos + 2 > end) {
1887                                 wpa_printf(MSG_DEBUG, "P2P: No room for full "
1888                                            "DNS offset field");
1889                                 return -1;
1890                         }
1891
1892                         offset = (((*spos)[0] & 0x3f) << 8) | (*spos)[1];
1893                         if (offset >= *spos - start) {
1894                                 wpa_printf(MSG_DEBUG, "P2P: Invalid DNS "
1895                                            "pointer offset %u", offset);
1896                                 return -1;
1897                         }
1898
1899                         (*spos) += 2;
1900                         spos_tmp = start + offset;
1901                         return p2p_sd_dns_uncompress_label(upos, uend, start,
1902                                                            &spos_tmp,
1903                                                            *spos - 2);
1904                 }
1905
1906                 /* Label */
1907                 len = (*spos)[0] & 0x3f;
1908                 if (len == 0)
1909                         return 0;
1910
1911                 (*spos)++;
1912                 if (*spos + len > end) {
1913                         wpa_printf(MSG_DEBUG, "P2P: Invalid domain name "
1914                                    "sequence - no room for label with length "
1915                                    "%u", len);
1916                         return -1;
1917                 }
1918
1919                 if (*upos + len + 2 > uend)
1920                         return -2;
1921
1922                 os_memcpy(*upos, *spos, len);
1923                 *spos += len;
1924                 *upos += len;
1925                 (*upos)[0] = '.';
1926                 (*upos)++;
1927                 (*upos)[0] = '\0';
1928         }
1929
1930         return 0;
1931 }
1932
1933
1934 /* Uncompress domain names per RFC 1035 using the P2P SD in-memory packet.
1935  * Returns -1 on parsing error (invalid input sequence), -2 if output buffer is
1936  * not large enough */
1937 static int p2p_sd_dns_uncompress(char *buf, size_t buf_len, const u8 *msg,
1938                                  size_t msg_len, size_t offset)
1939 {
1940         /* 27-octet in-memory packet from P2P specification */
1941         const char *prefix = "\x04_tcp\x05local\x00\x00\x0C\x00\x01"
1942                 "\x04_udp\xC0\x11\x00\x0C\x00\x01";
1943         u8 *tmp, *end, *spos;
1944         char *upos, *uend;
1945         int ret = 0;
1946
1947         if (buf_len < 2)
1948                 return -1;
1949         if (offset > msg_len)
1950                 return -1;
1951
1952         tmp = os_malloc(DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN + msg_len);
1953         if (tmp == NULL)
1954                 return -1;
1955         spos = tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN;
1956         end = spos + msg_len;
1957         spos += offset;
1958
1959         os_memset(tmp, 0, DNS_HEADER_LEN);
1960         os_memcpy(tmp + DNS_HEADER_LEN, prefix, P2P_SD_IN_MEMORY_LEN);
1961         os_memcpy(tmp + DNS_HEADER_LEN + P2P_SD_IN_MEMORY_LEN, msg, msg_len);
1962
1963         upos = buf;
1964         uend = buf + buf_len;
1965
1966         ret = p2p_sd_dns_uncompress_label(&upos, uend, tmp, &spos, end);
1967         if (ret) {
1968                 os_free(tmp);
1969                 return ret;
1970         }
1971
1972         if (upos == buf) {
1973                 upos[0] = '.';
1974                 upos[1] = '\0';
1975         } else if (upos[-1] == '.')
1976                 upos[-1] = '\0';
1977
1978         os_free(tmp);
1979         return 0;
1980 }
1981
1982
1983 static struct p2p_srv_bonjour *
1984 wpas_p2p_service_get_bonjour(struct wpa_supplicant *wpa_s,
1985                              const struct wpabuf *query)
1986 {
1987         struct p2p_srv_bonjour *bsrv;
1988         size_t len;
1989
1990         len = wpabuf_len(query);
1991         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
1992                          struct p2p_srv_bonjour, list) {
1993                 if (len == wpabuf_len(bsrv->query) &&
1994                     os_memcmp(wpabuf_head(query), wpabuf_head(bsrv->query),
1995                               len) == 0)
1996                         return bsrv;
1997         }
1998         return NULL;
1999 }
2000
2001
2002 static struct p2p_srv_upnp *
2003 wpas_p2p_service_get_upnp(struct wpa_supplicant *wpa_s, u8 version,
2004                           const char *service)
2005 {
2006         struct p2p_srv_upnp *usrv;
2007
2008         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2009                          struct p2p_srv_upnp, list) {
2010                 if (version == usrv->version &&
2011                     os_strcmp(service, usrv->service) == 0)
2012                         return usrv;
2013         }
2014         return NULL;
2015 }
2016
2017
2018 static void wpas_sd_add_proto_not_avail(struct wpabuf *resp, u8 srv_proto,
2019                                         u8 srv_trans_id)
2020 {
2021         u8 *len_pos;
2022
2023         if (wpabuf_tailroom(resp) < 5)
2024                 return;
2025
2026         /* Length (to be filled) */
2027         len_pos = wpabuf_put(resp, 2);
2028         wpabuf_put_u8(resp, srv_proto);
2029         wpabuf_put_u8(resp, srv_trans_id);
2030         /* Status Code */
2031         wpabuf_put_u8(resp, P2P_SD_PROTO_NOT_AVAILABLE);
2032         /* Response Data: empty */
2033         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2034 }
2035
2036
2037 static void wpas_sd_all_bonjour(struct wpa_supplicant *wpa_s,
2038                                 struct wpabuf *resp, u8 srv_trans_id)
2039 {
2040         struct p2p_srv_bonjour *bsrv;
2041         u8 *len_pos;
2042
2043         wpa_printf(MSG_DEBUG, "P2P: SD Request for all Bonjour services");
2044
2045         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2046                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2047                 return;
2048         }
2049
2050         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2051                          struct p2p_srv_bonjour, list) {
2052                 if (wpabuf_tailroom(resp) <
2053                     5 + wpabuf_len(bsrv->query) + wpabuf_len(bsrv->resp))
2054                         return;
2055                 /* Length (to be filled) */
2056                 len_pos = wpabuf_put(resp, 2);
2057                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2058                 wpabuf_put_u8(resp, srv_trans_id);
2059                 /* Status Code */
2060                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2061                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2062                                   wpabuf_head(bsrv->resp),
2063                                   wpabuf_len(bsrv->resp));
2064                 /* Response Data */
2065                 wpabuf_put_buf(resp, bsrv->query); /* Key */
2066                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2067                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2068                              2);
2069         }
2070 }
2071
2072
2073 static int match_bonjour_query(struct p2p_srv_bonjour *bsrv, const u8 *query,
2074                                size_t query_len)
2075 {
2076         char str_rx[256], str_srv[256];
2077
2078         if (query_len < 3 || wpabuf_len(bsrv->query) < 3)
2079                 return 0; /* Too short to include DNS Type and Version */
2080         if (os_memcmp(query + query_len - 3,
2081                       wpabuf_head_u8(bsrv->query) + wpabuf_len(bsrv->query) - 3,
2082                       3) != 0)
2083                 return 0; /* Mismatch in DNS Type or Version */
2084         if (query_len == wpabuf_len(bsrv->query) &&
2085             os_memcmp(query, wpabuf_head(bsrv->query), query_len - 3) == 0)
2086                 return 1; /* Binary match */
2087
2088         if (p2p_sd_dns_uncompress(str_rx, sizeof(str_rx), query, query_len - 3,
2089                                   0))
2090                 return 0; /* Failed to uncompress query */
2091         if (p2p_sd_dns_uncompress(str_srv, sizeof(str_srv),
2092                                   wpabuf_head(bsrv->query),
2093                                   wpabuf_len(bsrv->query) - 3, 0))
2094                 return 0; /* Failed to uncompress service */
2095
2096         return os_strcmp(str_rx, str_srv) == 0;
2097 }
2098
2099
2100 static void wpas_sd_req_bonjour(struct wpa_supplicant *wpa_s,
2101                                 struct wpabuf *resp, u8 srv_trans_id,
2102                                 const u8 *query, size_t query_len)
2103 {
2104         struct p2p_srv_bonjour *bsrv;
2105         u8 *len_pos;
2106         int matches = 0;
2107
2108         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for Bonjour",
2109                           query, query_len);
2110         if (dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2111                 wpa_printf(MSG_DEBUG, "P2P: Bonjour protocol not available");
2112                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_BONJOUR,
2113                                             srv_trans_id);
2114                 return;
2115         }
2116
2117         if (query_len == 0) {
2118                 wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2119                 return;
2120         }
2121
2122         dl_list_for_each(bsrv, &wpa_s->global->p2p_srv_bonjour,
2123                          struct p2p_srv_bonjour, list) {
2124                 if (!match_bonjour_query(bsrv, query, query_len))
2125                         continue;
2126
2127                 if (wpabuf_tailroom(resp) <
2128                     5 + query_len + wpabuf_len(bsrv->resp))
2129                         return;
2130
2131                 matches++;
2132
2133                 /* Length (to be filled) */
2134                 len_pos = wpabuf_put(resp, 2);
2135                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2136                 wpabuf_put_u8(resp, srv_trans_id);
2137
2138                 /* Status Code */
2139                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2140                 wpa_hexdump_ascii(MSG_DEBUG, "P2P: Matching Bonjour service",
2141                                   wpabuf_head(bsrv->resp),
2142                                   wpabuf_len(bsrv->resp));
2143
2144                 /* Response Data */
2145                 wpabuf_put_data(resp, query, query_len); /* Key */
2146                 wpabuf_put_buf(resp, bsrv->resp); /* Value */
2147
2148                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2149         }
2150
2151         if (matches == 0) {
2152                 wpa_printf(MSG_DEBUG, "P2P: Requested Bonjour service not "
2153                            "available");
2154                 if (wpabuf_tailroom(resp) < 5)
2155                         return;
2156
2157                 /* Length (to be filled) */
2158                 len_pos = wpabuf_put(resp, 2);
2159                 wpabuf_put_u8(resp, P2P_SERV_BONJOUR);
2160                 wpabuf_put_u8(resp, srv_trans_id);
2161
2162                 /* Status Code */
2163                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2164                 /* Response Data: empty */
2165                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2166                              2);
2167         }
2168 }
2169
2170
2171 static void wpas_sd_all_upnp(struct wpa_supplicant *wpa_s,
2172                              struct wpabuf *resp, u8 srv_trans_id)
2173 {
2174         struct p2p_srv_upnp *usrv;
2175         u8 *len_pos;
2176
2177         wpa_printf(MSG_DEBUG, "P2P: SD Request for all UPnP services");
2178
2179         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2180                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2181                 return;
2182         }
2183
2184         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2185                          struct p2p_srv_upnp, list) {
2186                 if (wpabuf_tailroom(resp) < 5 + 1 + os_strlen(usrv->service))
2187                         return;
2188
2189                 /* Length (to be filled) */
2190                 len_pos = wpabuf_put(resp, 2);
2191                 wpabuf_put_u8(resp, P2P_SERV_UPNP);
2192                 wpabuf_put_u8(resp, srv_trans_id);
2193
2194                 /* Status Code */
2195                 wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2196                 /* Response Data */
2197                 wpabuf_put_u8(resp, usrv->version);
2198                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2199                            usrv->service);
2200                 wpabuf_put_str(resp, usrv->service);
2201                 WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos -
2202                              2);
2203         }
2204 }
2205
2206
2207 static void wpas_sd_req_upnp(struct wpa_supplicant *wpa_s,
2208                              struct wpabuf *resp, u8 srv_trans_id,
2209                              const u8 *query, size_t query_len)
2210 {
2211         struct p2p_srv_upnp *usrv;
2212         u8 *len_pos;
2213         u8 version;
2214         char *str;
2215         int count = 0;
2216
2217         wpa_hexdump_ascii(MSG_DEBUG, "P2P: SD Request for UPnP",
2218                           query, query_len);
2219
2220         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp)) {
2221                 wpa_printf(MSG_DEBUG, "P2P: UPnP protocol not available");
2222                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_UPNP,
2223                                             srv_trans_id);
2224                 return;
2225         }
2226
2227         if (query_len == 0) {
2228                 wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2229                 return;
2230         }
2231
2232         if (wpabuf_tailroom(resp) < 5)
2233                 return;
2234
2235         /* Length (to be filled) */
2236         len_pos = wpabuf_put(resp, 2);
2237         wpabuf_put_u8(resp, P2P_SERV_UPNP);
2238         wpabuf_put_u8(resp, srv_trans_id);
2239
2240         version = query[0];
2241         str = os_malloc(query_len);
2242         if (str == NULL)
2243                 return;
2244         os_memcpy(str, query + 1, query_len - 1);
2245         str[query_len - 1] = '\0';
2246
2247         dl_list_for_each(usrv, &wpa_s->global->p2p_srv_upnp,
2248                          struct p2p_srv_upnp, list) {
2249                 if (version != usrv->version)
2250                         continue;
2251
2252                 if (os_strcmp(str, "ssdp:all") != 0 &&
2253                     os_strstr(usrv->service, str) == NULL)
2254                         continue;
2255
2256                 if (wpabuf_tailroom(resp) < 2)
2257                         break;
2258                 if (count == 0) {
2259                         /* Status Code */
2260                         wpabuf_put_u8(resp, P2P_SD_SUCCESS);
2261                         /* Response Data */
2262                         wpabuf_put_u8(resp, version);
2263                 } else
2264                         wpabuf_put_u8(resp, ',');
2265
2266                 count++;
2267
2268                 wpa_printf(MSG_DEBUG, "P2P: Matching UPnP Service: %s",
2269                            usrv->service);
2270                 if (wpabuf_tailroom(resp) < os_strlen(usrv->service))
2271                         break;
2272                 wpabuf_put_str(resp, usrv->service);
2273         }
2274         os_free(str);
2275
2276         if (count == 0) {
2277                 wpa_printf(MSG_DEBUG, "P2P: Requested UPnP service not "
2278                            "available");
2279                 /* Status Code */
2280                 wpabuf_put_u8(resp, P2P_SD_REQUESTED_INFO_NOT_AVAILABLE);
2281                 /* Response Data: empty */
2282         }
2283
2284         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2285 }
2286
2287
2288 #ifdef CONFIG_WIFI_DISPLAY
2289 static void wpas_sd_req_wfd(struct wpa_supplicant *wpa_s,
2290                             struct wpabuf *resp, u8 srv_trans_id,
2291                             const u8 *query, size_t query_len)
2292 {
2293         const u8 *pos;
2294         u8 role;
2295         u8 *len_pos;
2296
2297         wpa_hexdump(MSG_DEBUG, "P2P: SD Request for WFD", query, query_len);
2298
2299         if (!wpa_s->global->wifi_display) {
2300                 wpa_printf(MSG_DEBUG, "P2P: WFD protocol not available");
2301                 wpas_sd_add_proto_not_avail(resp, P2P_SERV_WIFI_DISPLAY,
2302                                             srv_trans_id);
2303                 return;
2304         }
2305
2306         if (query_len < 1) {
2307                 wpa_printf(MSG_DEBUG, "P2P: Missing WFD Requested Device "
2308                            "Role");
2309                 return;
2310         }
2311
2312         if (wpabuf_tailroom(resp) < 5)
2313                 return;
2314
2315         pos = query;
2316         role = *pos++;
2317         wpa_printf(MSG_DEBUG, "P2P: WSD for device role 0x%x", role);
2318
2319         /* TODO: role specific handling */
2320
2321         /* Length (to be filled) */
2322         len_pos = wpabuf_put(resp, 2);
2323         wpabuf_put_u8(resp, P2P_SERV_WIFI_DISPLAY);
2324         wpabuf_put_u8(resp, srv_trans_id);
2325         wpabuf_put_u8(resp, P2P_SD_SUCCESS); /* Status Code */
2326
2327         while (pos < query + query_len) {
2328                 if (*pos < MAX_WFD_SUBELEMS &&
2329                     wpa_s->global->wfd_subelem[*pos] &&
2330                     wpabuf_tailroom(resp) >=
2331                     wpabuf_len(wpa_s->global->wfd_subelem[*pos])) {
2332                         wpa_printf(MSG_DEBUG, "P2P: Add WSD response "
2333                                    "subelement %u", *pos);
2334                         wpabuf_put_buf(resp, wpa_s->global->wfd_subelem[*pos]);
2335                 }
2336                 pos++;
2337         }
2338
2339         WPA_PUT_LE16(len_pos, (u8 *) wpabuf_put(resp, 0) - len_pos - 2);
2340 }
2341 #endif /* CONFIG_WIFI_DISPLAY */
2342
2343
2344 static void wpas_sd_request(void *ctx, int freq, const u8 *sa, u8 dialog_token,
2345                             u16 update_indic, const u8 *tlvs, size_t tlvs_len)
2346 {
2347         struct wpa_supplicant *wpa_s = ctx;
2348         const u8 *pos = tlvs;
2349         const u8 *end = tlvs + tlvs_len;
2350         const u8 *tlv_end;
2351         u16 slen;
2352         struct wpabuf *resp;
2353         u8 srv_proto, srv_trans_id;
2354         size_t buf_len;
2355         char *buf;
2356
2357         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Request TLVs",
2358                     tlvs, tlvs_len);
2359         buf_len = 2 * tlvs_len + 1;
2360         buf = os_malloc(buf_len);
2361         if (buf) {
2362                 wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2363                 wpa_msg_ctrl(wpa_s, MSG_INFO, P2P_EVENT_SERV_DISC_REQ "%d "
2364                              MACSTR " %u %u %s",
2365                              freq, MAC2STR(sa), dialog_token, update_indic,
2366                              buf);
2367                 os_free(buf);
2368         }
2369
2370         if (wpa_s->p2p_sd_over_ctrl_iface) {
2371                 wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2372                                            update_indic, tlvs, tlvs_len);
2373                 return; /* to be processed by an external program */
2374         }
2375
2376         resp = wpabuf_alloc(10000);
2377         if (resp == NULL)
2378                 return;
2379
2380         while (pos + 1 < end) {
2381                 wpa_printf(MSG_DEBUG, "P2P: Service Request TLV");
2382                 slen = WPA_GET_LE16(pos);
2383                 pos += 2;
2384                 if (pos + slen > end || slen < 2) {
2385                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Query Data "
2386                                    "length");
2387                         wpabuf_free(resp);
2388                         return;
2389                 }
2390                 tlv_end = pos + slen;
2391
2392                 srv_proto = *pos++;
2393                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2394                            srv_proto);
2395                 srv_trans_id = *pos++;
2396                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2397                            srv_trans_id);
2398
2399                 wpa_hexdump(MSG_MSGDUMP, "P2P: Query Data",
2400                             pos, tlv_end - pos);
2401
2402
2403                 if (wpa_s->force_long_sd) {
2404                         wpa_printf(MSG_DEBUG, "P2P: SD test - force long "
2405                                    "response");
2406                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2407                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2408                         goto done;
2409                 }
2410
2411                 switch (srv_proto) {
2412                 case P2P_SERV_ALL_SERVICES:
2413                         wpa_printf(MSG_DEBUG, "P2P: Service Discovery Request "
2414                                    "for all services");
2415                         if (dl_list_empty(&wpa_s->global->p2p_srv_upnp) &&
2416                             dl_list_empty(&wpa_s->global->p2p_srv_bonjour)) {
2417                                 wpa_printf(MSG_DEBUG, "P2P: No service "
2418                                            "discovery protocols available");
2419                                 wpas_sd_add_proto_not_avail(
2420                                         resp, P2P_SERV_ALL_SERVICES,
2421                                         srv_trans_id);
2422                                 break;
2423                         }
2424                         wpas_sd_all_bonjour(wpa_s, resp, srv_trans_id);
2425                         wpas_sd_all_upnp(wpa_s, resp, srv_trans_id);
2426                         break;
2427                 case P2P_SERV_BONJOUR:
2428                         wpas_sd_req_bonjour(wpa_s, resp, srv_trans_id,
2429                                             pos, tlv_end - pos);
2430                         break;
2431                 case P2P_SERV_UPNP:
2432                         wpas_sd_req_upnp(wpa_s, resp, srv_trans_id,
2433                                          pos, tlv_end - pos);
2434                         break;
2435 #ifdef CONFIG_WIFI_DISPLAY
2436                 case P2P_SERV_WIFI_DISPLAY:
2437                         wpas_sd_req_wfd(wpa_s, resp, srv_trans_id,
2438                                         pos, tlv_end - pos);
2439                         break;
2440 #endif /* CONFIG_WIFI_DISPLAY */
2441                 default:
2442                         wpa_printf(MSG_DEBUG, "P2P: Unavailable service "
2443                                    "protocol %u", srv_proto);
2444                         wpas_sd_add_proto_not_avail(resp, srv_proto,
2445                                                     srv_trans_id);
2446                         break;
2447                 }
2448
2449                 pos = tlv_end;
2450         }
2451
2452 done:
2453         wpas_notify_p2p_sd_request(wpa_s, freq, sa, dialog_token,
2454                                    update_indic, tlvs, tlvs_len);
2455
2456         wpas_p2p_sd_response(wpa_s, freq, sa, dialog_token, resp);
2457
2458         wpabuf_free(resp);
2459 }
2460
2461
2462 static void wpas_sd_response(void *ctx, const u8 *sa, u16 update_indic,
2463                              const u8 *tlvs, size_t tlvs_len)
2464 {
2465         struct wpa_supplicant *wpa_s = ctx;
2466         const u8 *pos = tlvs;
2467         const u8 *end = tlvs + tlvs_len;
2468         const u8 *tlv_end;
2469         u16 slen;
2470         size_t buf_len;
2471         char *buf;
2472
2473         wpa_hexdump(MSG_MSGDUMP, "P2P: Service Discovery Response TLVs",
2474                     tlvs, tlvs_len);
2475         if (tlvs_len > 1500) {
2476                 /* TODO: better way for handling this */
2477                 wpa_msg_ctrl(wpa_s, MSG_INFO,
2478                              P2P_EVENT_SERV_DISC_RESP MACSTR
2479                              " %u <long response: %u bytes>",
2480                              MAC2STR(sa), update_indic,
2481                              (unsigned int) tlvs_len);
2482         } else {
2483                 buf_len = 2 * tlvs_len + 1;
2484                 buf = os_malloc(buf_len);
2485                 if (buf) {
2486                         wpa_snprintf_hex(buf, buf_len, tlvs, tlvs_len);
2487                         wpa_msg_ctrl(wpa_s, MSG_INFO,
2488                                      P2P_EVENT_SERV_DISC_RESP MACSTR " %u %s",
2489                                      MAC2STR(sa), update_indic, buf);
2490                         os_free(buf);
2491                 }
2492         }
2493
2494         while (pos < end) {
2495                 u8 srv_proto, srv_trans_id, status;
2496
2497                 wpa_printf(MSG_DEBUG, "P2P: Service Response TLV");
2498                 slen = WPA_GET_LE16(pos);
2499                 pos += 2;
2500                 if (pos + slen > end || slen < 3) {
2501                         wpa_printf(MSG_DEBUG, "P2P: Unexpected Response Data "
2502                                    "length");
2503                         return;
2504                 }
2505                 tlv_end = pos + slen;
2506
2507                 srv_proto = *pos++;
2508                 wpa_printf(MSG_DEBUG, "P2P: Service Protocol Type %u",
2509                            srv_proto);
2510                 srv_trans_id = *pos++;
2511                 wpa_printf(MSG_DEBUG, "P2P: Service Transaction ID %u",
2512                            srv_trans_id);
2513                 status = *pos++;
2514                 wpa_printf(MSG_DEBUG, "P2P: Status Code ID %u",
2515                            status);
2516
2517                 wpa_hexdump(MSG_MSGDUMP, "P2P: Response Data",
2518                             pos, tlv_end - pos);
2519
2520                 pos = tlv_end;
2521         }
2522
2523         wpas_notify_p2p_sd_response(wpa_s, sa, update_indic, tlvs, tlvs_len);
2524 }
2525
2526
2527 u64 wpas_p2p_sd_request(struct wpa_supplicant *wpa_s, const u8 *dst,
2528                         const struct wpabuf *tlvs)
2529 {
2530         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2531                 return 0;
2532         return (uintptr_t) p2p_sd_request(wpa_s->global->p2p, dst, tlvs);
2533 }
2534
2535
2536 u64 wpas_p2p_sd_request_upnp(struct wpa_supplicant *wpa_s, const u8 *dst,
2537                              u8 version, const char *query)
2538 {
2539         struct wpabuf *tlvs;
2540         u64 ret;
2541
2542         tlvs = wpabuf_alloc(2 + 1 + 1 + 1 + os_strlen(query));
2543         if (tlvs == NULL)
2544                 return 0;
2545         wpabuf_put_le16(tlvs, 1 + 1 + 1 + os_strlen(query));
2546         wpabuf_put_u8(tlvs, P2P_SERV_UPNP); /* Service Protocol Type */
2547         wpabuf_put_u8(tlvs, 1); /* Service Transaction ID */
2548         wpabuf_put_u8(tlvs, version);
2549         wpabuf_put_str(tlvs, query);
2550         ret = wpas_p2p_sd_request(wpa_s, dst, tlvs);
2551         wpabuf_free(tlvs);
2552         return ret;
2553 }
2554
2555
2556 #ifdef CONFIG_WIFI_DISPLAY
2557
2558 static u64 wpas_p2p_sd_request_wfd(struct wpa_supplicant *wpa_s, const u8 *dst,
2559                                    const struct wpabuf *tlvs)
2560 {
2561         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2562                 return 0;
2563         return (uintptr_t) p2p_sd_request_wfd(wpa_s->global->p2p, dst, tlvs);
2564 }
2565
2566
2567 #define MAX_WFD_SD_SUBELEMS 20
2568
2569 static void wfd_add_sd_req_role(struct wpabuf *tlvs, u8 id, u8 role,
2570                                 const char *subelems)
2571 {
2572         u8 *len;
2573         const char *pos;
2574         int val;
2575         int count = 0;
2576
2577         len = wpabuf_put(tlvs, 2);
2578         wpabuf_put_u8(tlvs, P2P_SERV_WIFI_DISPLAY); /* Service Protocol Type */
2579         wpabuf_put_u8(tlvs, id); /* Service Transaction ID */
2580
2581         wpabuf_put_u8(tlvs, role);
2582
2583         pos = subelems;
2584         while (*pos) {
2585                 val = atoi(pos);
2586                 if (val >= 0 && val < 256) {
2587                         wpabuf_put_u8(tlvs, val);
2588                         count++;
2589                         if (count == MAX_WFD_SD_SUBELEMS)
2590                                 break;
2591                 }
2592                 pos = os_strchr(pos + 1, ',');
2593                 if (pos == NULL)
2594                         break;
2595                 pos++;
2596         }
2597
2598         WPA_PUT_LE16(len, (u8 *) wpabuf_put(tlvs, 0) - len - 2);
2599 }
2600
2601
2602 u64 wpas_p2p_sd_request_wifi_display(struct wpa_supplicant *wpa_s,
2603                                      const u8 *dst, const char *role)
2604 {
2605         struct wpabuf *tlvs;
2606         u64 ret;
2607         const char *subelems;
2608         u8 id = 1;
2609
2610         subelems = os_strchr(role, ' ');
2611         if (subelems == NULL)
2612                 return 0;
2613         subelems++;
2614
2615         tlvs = wpabuf_alloc(4 * (2 + 1 + 1 + 1 + MAX_WFD_SD_SUBELEMS));
2616         if (tlvs == NULL)
2617                 return 0;
2618
2619         if (os_strstr(role, "[source]"))
2620                 wfd_add_sd_req_role(tlvs, id++, 0x00, subelems);
2621         if (os_strstr(role, "[pri-sink]"))
2622                 wfd_add_sd_req_role(tlvs, id++, 0x01, subelems);
2623         if (os_strstr(role, "[sec-sink]"))
2624                 wfd_add_sd_req_role(tlvs, id++, 0x02, subelems);
2625         if (os_strstr(role, "[source+sink]"))
2626                 wfd_add_sd_req_role(tlvs, id++, 0x03, subelems);
2627
2628         ret = wpas_p2p_sd_request_wfd(wpa_s, dst, tlvs);
2629         wpabuf_free(tlvs);
2630         return ret;
2631 }
2632
2633 #endif /* CONFIG_WIFI_DISPLAY */
2634
2635
2636 int wpas_p2p_sd_cancel_request(struct wpa_supplicant *wpa_s, u64 req)
2637 {
2638         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2639                 return -1;
2640         return p2p_sd_cancel_request(wpa_s->global->p2p,
2641                                      (void *) (uintptr_t) req);
2642 }
2643
2644
2645 void wpas_p2p_sd_response(struct wpa_supplicant *wpa_s, int freq,
2646                           const u8 *dst, u8 dialog_token,
2647                           const struct wpabuf *resp_tlvs)
2648 {
2649         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
2650                 return;
2651         p2p_sd_response(wpa_s->global->p2p, freq, dst, dialog_token,
2652                         resp_tlvs);
2653 }
2654
2655
2656 void wpas_p2p_sd_service_update(struct wpa_supplicant *wpa_s)
2657 {
2658         if (wpa_s->global->p2p)
2659                 p2p_sd_service_update(wpa_s->global->p2p);
2660 }
2661
2662
2663 static void wpas_p2p_srv_bonjour_free(struct p2p_srv_bonjour *bsrv)
2664 {
2665         dl_list_del(&bsrv->list);
2666         wpabuf_free(bsrv->query);
2667         wpabuf_free(bsrv->resp);
2668         os_free(bsrv);
2669 }
2670
2671
2672 static void wpas_p2p_srv_upnp_free(struct p2p_srv_upnp *usrv)
2673 {
2674         dl_list_del(&usrv->list);
2675         os_free(usrv->service);
2676         os_free(usrv);
2677 }
2678
2679
2680 void wpas_p2p_service_flush(struct wpa_supplicant *wpa_s)
2681 {
2682         struct p2p_srv_bonjour *bsrv, *bn;
2683         struct p2p_srv_upnp *usrv, *un;
2684
2685         dl_list_for_each_safe(bsrv, bn, &wpa_s->global->p2p_srv_bonjour,
2686                               struct p2p_srv_bonjour, list)
2687                 wpas_p2p_srv_bonjour_free(bsrv);
2688
2689         dl_list_for_each_safe(usrv, un, &wpa_s->global->p2p_srv_upnp,
2690                               struct p2p_srv_upnp, list)
2691                 wpas_p2p_srv_upnp_free(usrv);
2692
2693         wpas_p2p_sd_service_update(wpa_s);
2694 }
2695
2696
2697 int wpas_p2p_service_add_bonjour(struct wpa_supplicant *wpa_s,
2698                                  struct wpabuf *query, struct wpabuf *resp)
2699 {
2700         struct p2p_srv_bonjour *bsrv;
2701
2702         bsrv = os_zalloc(sizeof(*bsrv));
2703         if (bsrv == NULL)
2704                 return -1;
2705         bsrv->query = query;
2706         bsrv->resp = resp;
2707         dl_list_add(&wpa_s->global->p2p_srv_bonjour, &bsrv->list);
2708
2709         wpas_p2p_sd_service_update(wpa_s);
2710         return 0;
2711 }
2712
2713
2714 int wpas_p2p_service_del_bonjour(struct wpa_supplicant *wpa_s,
2715                                  const struct wpabuf *query)
2716 {
2717         struct p2p_srv_bonjour *bsrv;
2718
2719         bsrv = wpas_p2p_service_get_bonjour(wpa_s, query);
2720         if (bsrv == NULL)
2721                 return -1;
2722         wpas_p2p_srv_bonjour_free(bsrv);
2723         wpas_p2p_sd_service_update(wpa_s);
2724         return 0;
2725 }
2726
2727
2728 int wpas_p2p_service_add_upnp(struct wpa_supplicant *wpa_s, u8 version,
2729                               const char *service)
2730 {
2731         struct p2p_srv_upnp *usrv;
2732
2733         if (wpas_p2p_service_get_upnp(wpa_s, version, service))
2734                 return 0; /* Already listed */
2735         usrv = os_zalloc(sizeof(*usrv));
2736         if (usrv == NULL)
2737                 return -1;
2738         usrv->version = version;
2739         usrv->service = os_strdup(service);
2740         if (usrv->service == NULL) {
2741                 os_free(usrv);
2742                 return -1;
2743         }
2744         dl_list_add(&wpa_s->global->p2p_srv_upnp, &usrv->list);
2745
2746         wpas_p2p_sd_service_update(wpa_s);
2747         return 0;
2748 }
2749
2750
2751 int wpas_p2p_service_del_upnp(struct wpa_supplicant *wpa_s, u8 version,
2752                               const char *service)
2753 {
2754         struct p2p_srv_upnp *usrv;
2755
2756         usrv = wpas_p2p_service_get_upnp(wpa_s, version, service);
2757         if (usrv == NULL)
2758                 return -1;
2759         wpas_p2p_srv_upnp_free(usrv);
2760         wpas_p2p_sd_service_update(wpa_s);
2761         return 0;
2762 }
2763
2764
2765 static void wpas_prov_disc_local_display(struct wpa_supplicant *wpa_s,
2766                                          const u8 *peer, const char *params,
2767                                          unsigned int generated_pin)
2768 {
2769         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_SHOW_PIN MACSTR
2770                        " %08d%s", MAC2STR(peer), generated_pin, params);
2771 }
2772
2773
2774 static void wpas_prov_disc_local_keypad(struct wpa_supplicant *wpa_s,
2775                                         const u8 *peer, const char *params)
2776 {
2777         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_ENTER_PIN MACSTR
2778                        "%s", MAC2STR(peer), params);
2779 }
2780
2781
2782 static void wpas_prov_disc_req(void *ctx, const u8 *peer, u16 config_methods,
2783                                const u8 *dev_addr, const u8 *pri_dev_type,
2784                                const char *dev_name, u16 supp_config_methods,
2785                                u8 dev_capab, u8 group_capab, const u8 *group_id,
2786                                size_t group_id_len)
2787 {
2788         struct wpa_supplicant *wpa_s = ctx;
2789         char devtype[WPS_DEV_TYPE_BUFSIZE];
2790         char params[300];
2791         u8 empty_dev_type[8];
2792         unsigned int generated_pin = 0;
2793         struct wpa_supplicant *group = NULL;
2794
2795         if (group_id) {
2796                 for (group = wpa_s->global->ifaces; group; group = group->next)
2797                 {
2798                         struct wpa_ssid *s = group->current_ssid;
2799                         if (s != NULL &&
2800                             s->mode == WPAS_MODE_P2P_GO &&
2801                             group_id_len - ETH_ALEN == s->ssid_len &&
2802                             os_memcmp(group_id + ETH_ALEN, s->ssid,
2803                                       s->ssid_len) == 0)
2804                                 break;
2805                 }
2806         }
2807
2808         if (pri_dev_type == NULL) {
2809                 os_memset(empty_dev_type, 0, sizeof(empty_dev_type));
2810                 pri_dev_type = empty_dev_type;
2811         }
2812         os_snprintf(params, sizeof(params), " p2p_dev_addr=" MACSTR
2813                     " pri_dev_type=%s name='%s' config_methods=0x%x "
2814                     "dev_capab=0x%x group_capab=0x%x%s%s",
2815                     MAC2STR(dev_addr),
2816                     wps_dev_type_bin2str(pri_dev_type, devtype,
2817                                          sizeof(devtype)),
2818                     dev_name, supp_config_methods, dev_capab, group_capab,
2819                     group ? " group=" : "",
2820                     group ? group->ifname : "");
2821         params[sizeof(params) - 1] = '\0';
2822
2823         if (config_methods & WPS_CONFIG_DISPLAY) {
2824                 generated_pin = wps_generate_pin();
2825                 wpas_prov_disc_local_display(wpa_s, peer, params,
2826                                              generated_pin);
2827         } else if (config_methods & WPS_CONFIG_KEYPAD)
2828                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2829         else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2830                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_REQ
2831                                MACSTR "%s", MAC2STR(peer), params);
2832
2833         wpas_notify_p2p_provision_discovery(wpa_s, peer, 1 /* request */,
2834                                             P2P_PROV_DISC_SUCCESS,
2835                                             config_methods, generated_pin);
2836 }
2837
2838
2839 static void wpas_prov_disc_resp(void *ctx, const u8 *peer, u16 config_methods)
2840 {
2841         struct wpa_supplicant *wpa_s = ctx;
2842         unsigned int generated_pin = 0;
2843         char params[20];
2844
2845         if (wpa_s->pending_pd_before_join &&
2846             (os_memcmp(peer, wpa_s->pending_join_dev_addr, ETH_ALEN) == 0 ||
2847              os_memcmp(peer, wpa_s->pending_join_iface_addr, ETH_ALEN) == 0)) {
2848                 wpa_s->pending_pd_before_join = 0;
2849                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2850                            "join-existing-group operation");
2851                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2852                 return;
2853         }
2854
2855         if (wpa_s->pending_pd_use == AUTO_PD_JOIN ||
2856             wpa_s->pending_pd_use == AUTO_PD_GO_NEG)
2857                 os_snprintf(params, sizeof(params), " peer_go=%d",
2858                             wpa_s->pending_pd_use == AUTO_PD_JOIN);
2859         else
2860                 params[0] = '\0';
2861
2862         if (config_methods & WPS_CONFIG_DISPLAY)
2863                 wpas_prov_disc_local_keypad(wpa_s, peer, params);
2864         else if (config_methods & WPS_CONFIG_KEYPAD) {
2865                 generated_pin = wps_generate_pin();
2866                 wpas_prov_disc_local_display(wpa_s, peer, params,
2867                                              generated_pin);
2868         } else if (config_methods & WPS_CONFIG_PUSHBUTTON)
2869                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_PBC_RESP
2870                                MACSTR "%s", MAC2STR(peer), params);
2871
2872         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2873                                             P2P_PROV_DISC_SUCCESS,
2874                                             config_methods, generated_pin);
2875 }
2876
2877
2878 static void wpas_prov_disc_fail(void *ctx, const u8 *peer,
2879                                 enum p2p_prov_disc_status status)
2880 {
2881         struct wpa_supplicant *wpa_s = ctx;
2882
2883         if (wpa_s->p2p_fallback_to_go_neg) {
2884                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: PD for p2p_connect-auto "
2885                         "failed - fall back to GO Negotiation");
2886                 wpas_p2p_fallback_to_go_neg(wpa_s, 0);
2887                 return;
2888         }
2889
2890         if (status == P2P_PROV_DISC_TIMEOUT_JOIN) {
2891                 wpa_s->pending_pd_before_join = 0;
2892                 wpa_printf(MSG_DEBUG, "P2P: Starting pending "
2893                            "join-existing-group operation (no ACK for PD "
2894                            "Req attempts)");
2895                 wpas_p2p_join_start(wpa_s, 0, NULL, 0);
2896                 return;
2897         }
2898
2899         wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_PROV_DISC_FAILURE
2900                        " p2p_dev_addr=" MACSTR " status=%d",
2901                        MAC2STR(peer), status);
2902
2903         wpas_notify_p2p_provision_discovery(wpa_s, peer, 0 /* response */,
2904                                             status, 0, 0);
2905 }
2906
2907
2908 static int freq_included(const struct p2p_channels *channels, unsigned int freq)
2909 {
2910         if (channels == NULL)
2911                 return 1; /* Assume no restrictions */
2912         return p2p_channels_includes_freq(channels, freq);
2913
2914 }
2915
2916
2917 static u8 wpas_invitation_process(void *ctx, const u8 *sa, const u8 *bssid,
2918                                   const u8 *go_dev_addr, const u8 *ssid,
2919                                   size_t ssid_len, int *go, u8 *group_bssid,
2920                                   int *force_freq, int persistent_group,
2921                                   const struct p2p_channels *channels,
2922                                   int dev_pw_id)
2923 {
2924         struct wpa_supplicant *wpa_s = ctx;
2925         struct wpa_ssid *s;
2926         int res;
2927         struct wpa_supplicant *grp;
2928
2929         if (!persistent_group) {
2930                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2931                            " to join an active group (SSID: %s)",
2932                            MAC2STR(sa), wpa_ssid_txt(ssid, ssid_len));
2933                 if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2934                     (os_memcmp(go_dev_addr, wpa_s->p2p_auth_invite, ETH_ALEN)
2935                      == 0 ||
2936                      os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0)) {
2937                         wpa_printf(MSG_DEBUG, "P2P: Accept previously "
2938                                    "authorized invitation");
2939                         goto accept_inv;
2940                 }
2941
2942 #ifdef CONFIG_WPS_NFC
2943                 if (dev_pw_id >= 0 && wpa_s->parent->p2p_nfc_tag_enabled &&
2944                     dev_pw_id == wpa_s->parent->p2p_oob_dev_pw_id) {
2945                         wpa_printf(MSG_DEBUG, "P2P: Accept invitation based on local enabled NFC Tag");
2946                         wpa_s->parent->p2p_wps_method = WPS_NFC;
2947                         wpa_s->parent->pending_join_wps_method = WPS_NFC;
2948                         os_memcpy(wpa_s->parent->pending_join_dev_addr,
2949                                   go_dev_addr, ETH_ALEN);
2950                         os_memcpy(wpa_s->parent->pending_join_iface_addr,
2951                                   bssid, ETH_ALEN);
2952                         goto accept_inv;
2953                 }
2954 #endif /* CONFIG_WPS_NFC */
2955
2956                 /*
2957                  * Do not accept the invitation automatically; notify user and
2958                  * request approval.
2959                  */
2960                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2961         }
2962
2963         grp = wpas_get_p2p_group(wpa_s, ssid, ssid_len, go);
2964         if (grp) {
2965                 wpa_printf(MSG_DEBUG, "P2P: Accept invitation to already "
2966                            "running persistent group");
2967                 if (*go)
2968                         os_memcpy(group_bssid, grp->own_addr, ETH_ALEN);
2969                 goto accept_inv;
2970         }
2971
2972         if (!is_zero_ether_addr(wpa_s->p2p_auth_invite) &&
2973             os_memcmp(sa, wpa_s->p2p_auth_invite, ETH_ALEN) == 0) {
2974                 wpa_printf(MSG_DEBUG, "P2P: Accept previously initiated "
2975                            "invitation to re-invoke a persistent group");
2976                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
2977         } else if (!wpa_s->conf->persistent_reconnect)
2978                 return P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE;
2979
2980         for (s = wpa_s->conf->ssid; s; s = s->next) {
2981                 if (s->disabled == 2 &&
2982                     os_memcmp(s->bssid, go_dev_addr, ETH_ALEN) == 0 &&
2983                     s->ssid_len == ssid_len &&
2984                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
2985                         break;
2986         }
2987
2988         if (!s) {
2989                 wpa_printf(MSG_DEBUG, "P2P: Invitation from " MACSTR
2990                            " requested reinvocation of an unknown group",
2991                            MAC2STR(sa));
2992                 return P2P_SC_FAIL_UNKNOWN_GROUP;
2993         }
2994
2995         if (s->mode == WPAS_MODE_P2P_GO && !wpas_p2p_create_iface(wpa_s)) {
2996                 *go = 1;
2997                 if (wpa_s->wpa_state >= WPA_AUTHENTICATING) {
2998                         wpa_printf(MSG_DEBUG, "P2P: The only available "
2999                                    "interface is already in use - reject "
3000                                    "invitation");
3001                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3002                 }
3003                 os_memcpy(group_bssid, wpa_s->own_addr, ETH_ALEN);
3004         } else if (s->mode == WPAS_MODE_P2P_GO) {
3005                 *go = 1;
3006                 if (wpas_p2p_add_group_interface(wpa_s, WPA_IF_P2P_GO) < 0)
3007                 {
3008                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
3009                                    "interface address for the group");
3010                         return P2P_SC_FAIL_UNABLE_TO_ACCOMMODATE;
3011                 }
3012                 os_memcpy(group_bssid, wpa_s->pending_interface_addr,
3013                           ETH_ALEN);
3014         }
3015
3016 accept_inv:
3017         wpas_p2p_set_own_freq_preference(wpa_s, 0);
3018
3019         /* Get one of the frequencies currently in use */
3020         if (wpas_p2p_valid_oper_freqs(wpa_s, &res, 1) > 0) {
3021                 wpa_printf(MSG_DEBUG, "P2P: Trying to prefer a channel already used by one of the interfaces");
3022                 wpas_p2p_set_own_freq_preference(wpa_s, res);
3023
3024                 if (wpa_s->num_multichan_concurrent < 2 ||
3025                     wpas_p2p_num_unused_channels(wpa_s) < 1) {
3026                         wpa_printf(MSG_DEBUG, "P2P: No extra channels available - trying to force channel to match a channel already used by one of the interfaces");
3027                         *force_freq = res;
3028                 }
3029         }
3030
3031         if (*force_freq > 0 && wpa_s->num_multichan_concurrent > 1 &&
3032             wpas_p2p_num_unused_channels(wpa_s) > 0) {
3033                 if (*go == 0) {
3034                         /* We are the client */
3035                         wpa_printf(MSG_DEBUG, "P2P: Peer was found to be "
3036                                    "running a GO but we are capable of MCC, "
3037                                    "figure out the best channel to use");
3038                         *force_freq = 0;
3039                 } else if (!freq_included(channels, *force_freq)) {
3040                         /* We are the GO, and *force_freq is not in the
3041                          * intersection */
3042                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
3043                                    "in intersection but we are capable of MCC, "
3044                                    "figure out the best channel to use",
3045                                    *force_freq);
3046                         *force_freq = 0;
3047                 }
3048         }
3049
3050         return P2P_SC_SUCCESS;
3051 }
3052
3053
3054 static void wpas_invitation_received(void *ctx, const u8 *sa, const u8 *bssid,
3055                                      const u8 *ssid, size_t ssid_len,
3056                                      const u8 *go_dev_addr, u8 status,
3057                                      int op_freq)
3058 {
3059         struct wpa_supplicant *wpa_s = ctx;
3060         struct wpa_ssid *s;
3061
3062         for (s = wpa_s->conf->ssid; s; s = s->next) {
3063                 if (s->disabled == 2 &&
3064                     s->ssid_len == ssid_len &&
3065                     os_memcmp(ssid, s->ssid, ssid_len) == 0)
3066                         break;
3067         }
3068
3069         if (status == P2P_SC_SUCCESS) {
3070                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3071                            " was accepted; op_freq=%d MHz, SSID=%s",
3072                            MAC2STR(sa), op_freq, wpa_ssid_txt(ssid, ssid_len));
3073                 if (s) {
3074                         int go = s->mode == WPAS_MODE_P2P_GO;
3075                         wpas_p2p_group_add_persistent(
3076                                 wpa_s, s, go, 0, op_freq, 0, 0, NULL,
3077                                 go ? P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE : 0);
3078                 } else if (bssid) {
3079                         wpa_s->user_initiated_pd = 0;
3080                         wpas_p2p_join(wpa_s, bssid, go_dev_addr,
3081                                       wpa_s->p2p_wps_method, 0, op_freq,
3082                                       ssid, ssid_len);
3083                 }
3084                 return;
3085         }
3086
3087         if (status != P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3088                 wpa_printf(MSG_DEBUG, "P2P: Invitation from peer " MACSTR
3089                            " was rejected (status %u)", MAC2STR(sa), status);
3090                 return;
3091         }
3092
3093         if (!s) {
3094                 if (bssid) {
3095                         wpa_msg_global(wpa_s, MSG_INFO,
3096                                        P2P_EVENT_INVITATION_RECEIVED
3097                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3098                                        " bssid=" MACSTR " unknown-network",
3099                                        MAC2STR(sa), MAC2STR(go_dev_addr),
3100                                        MAC2STR(bssid));
3101                 } else {
3102                         wpa_msg_global(wpa_s, MSG_INFO,
3103                                        P2P_EVENT_INVITATION_RECEIVED
3104                                        "sa=" MACSTR " go_dev_addr=" MACSTR
3105                                        " unknown-network",
3106                                        MAC2STR(sa), MAC2STR(go_dev_addr));
3107                 }
3108                 return;
3109         }
3110
3111         if (s->mode == WPAS_MODE_P2P_GO && op_freq) {
3112                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3113                                "sa=" MACSTR " persistent=%d freq=%d",
3114                                MAC2STR(sa), s->id, op_freq);
3115         } else {
3116                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RECEIVED
3117                                "sa=" MACSTR " persistent=%d",
3118                                MAC2STR(sa), s->id);
3119         }
3120 }
3121
3122
3123 static void wpas_remove_persistent_peer(struct wpa_supplicant *wpa_s,
3124                                         struct wpa_ssid *ssid,
3125                                         const u8 *peer, int inv)
3126 {
3127         size_t i;
3128
3129         if (ssid == NULL)
3130                 return;
3131
3132         for (i = 0; ssid->p2p_client_list && i < ssid->num_p2p_clients; i++) {
3133                 if (os_memcmp(ssid->p2p_client_list + i * ETH_ALEN, peer,
3134                               ETH_ALEN) == 0)
3135                         break;
3136         }
3137         if (i >= ssid->num_p2p_clients) {
3138                 if (ssid->mode != WPAS_MODE_P2P_GO &&
3139                     os_memcmp(ssid->bssid, peer, ETH_ALEN) == 0) {
3140                         wpa_printf(MSG_DEBUG, "P2P: Remove persistent group %d "
3141                                    "due to invitation result", ssid->id);
3142                         wpas_notify_network_removed(wpa_s, ssid);
3143                         wpa_config_remove_network(wpa_s->conf, ssid->id);
3144                         return;
3145                 }
3146                 return; /* Peer not found in client list */
3147         }
3148
3149         wpa_printf(MSG_DEBUG, "P2P: Remove peer " MACSTR " from persistent "
3150                    "group %d client list%s",
3151                    MAC2STR(peer), ssid->id,
3152                    inv ? " due to invitation result" : "");
3153         os_memmove(ssid->p2p_client_list + i * ETH_ALEN,
3154                    ssid->p2p_client_list + (i + 1) * ETH_ALEN,
3155                    (ssid->num_p2p_clients - i - 1) * ETH_ALEN);
3156         ssid->num_p2p_clients--;
3157         if (wpa_s->parent->conf->update_config &&
3158             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
3159                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
3160 }
3161
3162
3163 static void wpas_remove_persistent_client(struct wpa_supplicant *wpa_s,
3164                                           const u8 *peer)
3165 {
3166         struct wpa_ssid *ssid;
3167
3168         wpa_s = wpa_s->global->p2p_invite_group;
3169         if (wpa_s == NULL)
3170                 return; /* No known invitation group */
3171         ssid = wpa_s->current_ssid;
3172         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GO ||
3173             !ssid->p2p_persistent_group)
3174                 return; /* Not operating as a GO in persistent group */
3175         ssid = wpas_p2p_get_persistent(wpa_s->parent, peer,
3176                                        ssid->ssid, ssid->ssid_len);
3177         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3178 }
3179
3180
3181 static void wpas_invitation_result(void *ctx, int status, const u8 *bssid,
3182                                    const struct p2p_channels *channels,
3183                                    const u8 *peer, int neg_freq,
3184                                    int peer_oper_freq)
3185 {
3186         struct wpa_supplicant *wpa_s = ctx;
3187         struct wpa_ssid *ssid;
3188         int freq;
3189
3190         if (bssid) {
3191                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3192                                "status=%d " MACSTR,
3193                                status, MAC2STR(bssid));
3194         } else {
3195                 wpa_msg_global(wpa_s, MSG_INFO, P2P_EVENT_INVITATION_RESULT
3196                                "status=%d ", status);
3197         }
3198         wpas_notify_p2p_invitation_result(wpa_s, status, bssid);
3199
3200         wpa_printf(MSG_DEBUG, "P2P: Invitation result - status=%d peer=" MACSTR,
3201                    status, MAC2STR(peer));
3202         if (wpa_s->pending_invite_ssid_id == -1) {
3203                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP)
3204                         wpas_remove_persistent_client(wpa_s, peer);
3205                 return; /* Invitation to active group */
3206         }
3207
3208         if (status == P2P_SC_FAIL_INFO_CURRENTLY_UNAVAILABLE) {
3209                 wpa_printf(MSG_DEBUG, "P2P: Waiting for peer to start another "
3210                            "invitation exchange to indicate readiness for "
3211                            "re-invocation");
3212         }
3213
3214         if (status != P2P_SC_SUCCESS) {
3215                 if (status == P2P_SC_FAIL_UNKNOWN_GROUP) {
3216                         ssid = wpa_config_get_network(
3217                                 wpa_s->conf, wpa_s->pending_invite_ssid_id);
3218                         wpas_remove_persistent_peer(wpa_s, ssid, peer, 1);
3219                 }
3220                 wpas_p2p_remove_pending_group_interface(wpa_s);
3221                 return;
3222         }
3223
3224         ssid = wpa_config_get_network(wpa_s->conf,
3225                                       wpa_s->pending_invite_ssid_id);
3226         if (ssid == NULL) {
3227                 wpa_printf(MSG_ERROR, "P2P: Could not find persistent group "
3228                            "data matching with invitation");
3229                 return;
3230         }
3231
3232         /*
3233          * The peer could have missed our ctrl::ack frame for Invitation
3234          * Response and continue retransmitting the frame. To reduce the
3235          * likelihood of the peer not getting successful TX status for the
3236          * Invitation Response frame, wait a short time here before starting
3237          * the persistent group so that we will remain on the current channel to
3238          * acknowledge any possible retransmission from the peer.
3239          */
3240         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: 50 ms wait on current channel before "
3241                 "starting persistent group");
3242         os_sleep(0, 50000);
3243
3244         if (neg_freq > 0 && ssid->mode == WPAS_MODE_P2P_GO &&
3245             freq_included(channels, neg_freq))
3246                 freq = neg_freq;
3247         else if (peer_oper_freq > 0 && ssid->mode != WPAS_MODE_P2P_GO &&
3248                  freq_included(channels, peer_oper_freq))
3249                 freq = peer_oper_freq;
3250         else
3251                 freq = 0;
3252
3253         wpa_printf(MSG_DEBUG, "P2P: Persistent group invitation success - op_freq=%d MHz SSID=%s",
3254                    freq, wpa_ssid_txt(ssid->ssid, ssid->ssid_len));
3255         wpas_p2p_group_add_persistent(wpa_s, ssid,
3256                                       ssid->mode == WPAS_MODE_P2P_GO,
3257                                       wpa_s->p2p_persistent_go_freq,
3258                                       freq,
3259                                       wpa_s->p2p_go_ht40, wpa_s->p2p_go_vht,
3260                                       channels,
3261                                       ssid->mode == WPAS_MODE_P2P_GO ?
3262                                       P2P_MAX_INITIAL_CONN_WAIT_GO_REINVOKE :
3263                                       0);
3264 }
3265
3266
3267 static int wpas_p2p_disallowed_freq(struct wpa_global *global,
3268                                     unsigned int freq)
3269 {
3270         if (freq_range_list_includes(&global->p2p_go_avoid_freq, freq))
3271                 return 1;
3272         return freq_range_list_includes(&global->p2p_disallow_freq, freq);
3273 }
3274
3275
3276 static void wpas_p2p_add_chan(struct p2p_reg_class *reg, u8 chan)
3277 {
3278         reg->channel[reg->channels] = chan;
3279         reg->channels++;
3280 }
3281
3282
3283 static int wpas_p2p_default_channels(struct wpa_supplicant *wpa_s,
3284                                      struct p2p_channels *chan,
3285                                      struct p2p_channels *cli_chan)
3286 {
3287         int i, cla = 0;
3288
3289         os_memset(cli_chan, 0, sizeof(*cli_chan));
3290
3291         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for 2.4 GHz "
3292                    "band");
3293
3294         /* Operating class 81 - 2.4 GHz band channels 1..13 */
3295         chan->reg_class[cla].reg_class = 81;
3296         chan->reg_class[cla].channels = 0;
3297         for (i = 0; i < 11; i++) {
3298                 if (!wpas_p2p_disallowed_freq(wpa_s->global, 2412 + i * 5))
3299                         wpas_p2p_add_chan(&chan->reg_class[cla], i + 1);
3300         }
3301         if (chan->reg_class[cla].channels)
3302                 cla++;
3303
3304         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for lower 5 GHz "
3305                    "band");
3306
3307         /* Operating class 115 - 5 GHz, channels 36-48 */
3308         chan->reg_class[cla].reg_class = 115;
3309         chan->reg_class[cla].channels = 0;
3310         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 36 * 5))
3311                 wpas_p2p_add_chan(&chan->reg_class[cla], 36);
3312         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 40 * 5))
3313                 wpas_p2p_add_chan(&chan->reg_class[cla], 40);
3314         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 44 * 5))
3315                 wpas_p2p_add_chan(&chan->reg_class[cla], 44);
3316         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 48 * 5))
3317                 wpas_p2p_add_chan(&chan->reg_class[cla], 48);
3318         if (chan->reg_class[cla].channels)
3319                 cla++;
3320
3321         wpa_printf(MSG_DEBUG, "P2P: Enable operating classes for higher 5 GHz "
3322                    "band");
3323
3324         /* Operating class 124 - 5 GHz, channels 149,153,157,161 */
3325         chan->reg_class[cla].reg_class = 124;
3326         chan->reg_class[cla].channels = 0;
3327         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 149 * 5))
3328                 wpas_p2p_add_chan(&chan->reg_class[cla], 149);
3329         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 153 * 5))
3330                 wpas_p2p_add_chan(&chan->reg_class[cla], 153);
3331         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 156 * 5))
3332                 wpas_p2p_add_chan(&chan->reg_class[cla], 157);
3333         if (!wpas_p2p_disallowed_freq(wpa_s->global, 5000 + 161 * 5))
3334                 wpas_p2p_add_chan(&chan->reg_class[cla], 161);
3335         if (chan->reg_class[cla].channels)
3336                 cla++;
3337
3338         chan->reg_classes = cla;
3339         return 0;
3340 }
3341
3342
3343 static struct hostapd_hw_modes * get_mode(struct hostapd_hw_modes *modes,
3344                                           u16 num_modes,
3345                                           enum hostapd_hw_mode mode)
3346 {
3347         u16 i;
3348
3349         for (i = 0; i < num_modes; i++) {
3350                 if (modes[i].mode == mode)
3351                         return &modes[i];
3352         }
3353
3354         return NULL;
3355 }
3356
3357
3358 enum chan_allowed {
3359         NOT_ALLOWED, PASSIVE_ONLY, ALLOWED
3360 };
3361
3362 static int has_channel(struct wpa_global *global,
3363                        struct hostapd_hw_modes *mode, u8 chan, int *flags)
3364 {
3365         int i;
3366         unsigned int freq;
3367
3368         freq = (mode->mode == HOSTAPD_MODE_IEEE80211A ? 5000 : 2407) +
3369                 chan * 5;
3370         if (wpas_p2p_disallowed_freq(global, freq))
3371                 return NOT_ALLOWED;
3372
3373         for (i = 0; i < mode->num_channels; i++) {
3374                 if (mode->channels[i].chan == chan) {
3375                         if (flags)
3376                                 *flags = mode->channels[i].flag;
3377                         if (mode->channels[i].flag &
3378                             (HOSTAPD_CHAN_DISABLED |
3379                              HOSTAPD_CHAN_RADAR))
3380                                 return NOT_ALLOWED;
3381                         if (mode->channels[i].flag &
3382                             (HOSTAPD_CHAN_PASSIVE_SCAN |
3383                              HOSTAPD_CHAN_NO_IBSS))
3384                                 return PASSIVE_ONLY;
3385                         return ALLOWED;
3386                 }
3387         }
3388
3389         return NOT_ALLOWED;
3390 }
3391
3392
3393 struct p2p_oper_class_map {
3394         enum hostapd_hw_mode mode;
3395         u8 op_class;
3396         u8 min_chan;
3397         u8 max_chan;
3398         u8 inc;
3399         enum { BW20, BW40PLUS, BW40MINUS, BW80 } bw;
3400 };
3401
3402 static struct p2p_oper_class_map op_class[] = {
3403         { HOSTAPD_MODE_IEEE80211G, 81, 1, 13, 1, BW20 },
3404 #if 0 /* Do not enable HT40 on 2 GHz for now */
3405         { HOSTAPD_MODE_IEEE80211G, 83, 1, 9, 1, BW40PLUS },
3406         { HOSTAPD_MODE_IEEE80211G, 84, 5, 13, 1, BW40MINUS },
3407 #endif
3408         { HOSTAPD_MODE_IEEE80211A, 115, 36, 48, 4, BW20 },
3409         { HOSTAPD_MODE_IEEE80211A, 124, 149, 161, 4, BW20 },
3410         { HOSTAPD_MODE_IEEE80211A, 116, 36, 44, 8, BW40PLUS },
3411         { HOSTAPD_MODE_IEEE80211A, 117, 40, 48, 8, BW40MINUS },
3412         { HOSTAPD_MODE_IEEE80211A, 126, 149, 157, 8, BW40PLUS },
3413         { HOSTAPD_MODE_IEEE80211A, 127, 153, 161, 8, BW40MINUS },
3414
3415         /*
3416          * IEEE P802.11ac/D7.0 Table E-4 actually talks about channel center
3417          * frequency index 42, 58, 106, 122, 138, 155 with channel spacing of
3418          * 80 MHz, but currently use the following definition for simplicity
3419          * (these center frequencies are not actual channels, which makes
3420          * has_channel() fail). wpas_p2p_verify_80mhz() should take care of
3421          * removing invalid channels.
3422          */
3423         { HOSTAPD_MODE_IEEE80211A, 128, 36, 161, 4, BW80 },
3424         { -1, 0, 0, 0, 0, BW20 }
3425 };
3426
3427
3428 static int wpas_p2p_get_center_80mhz(struct wpa_supplicant *wpa_s,
3429                                      struct hostapd_hw_modes *mode,
3430                                      u8 channel)
3431 {
3432         u8 center_channels[] = { 42, 58, 106, 122, 138, 155 };
3433         unsigned int i;
3434
3435         if (mode->mode != HOSTAPD_MODE_IEEE80211A)
3436                 return 0;
3437
3438         for (i = 0; i < ARRAY_SIZE(center_channels); i++)
3439                 /*
3440                  * In 80 MHz, the bandwidth "spans" 12 channels (e.g., 36-48),
3441                  * so the center channel is 6 channels away from the start/end.
3442                  */
3443                 if (channel >= center_channels[i] - 6 &&
3444                     channel <= center_channels[i] + 6)
3445                         return center_channels[i];
3446
3447         return 0;
3448 }
3449
3450
3451 static enum chan_allowed wpas_p2p_verify_80mhz(struct wpa_supplicant *wpa_s,
3452                                                struct hostapd_hw_modes *mode,
3453                                                u8 channel, u8 bw)
3454 {
3455         u8 center_chan;
3456         int i, flags;
3457         enum chan_allowed res, ret = ALLOWED;
3458
3459         center_chan = wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3460         if (!center_chan)
3461                 return NOT_ALLOWED;
3462         if (center_chan >= 58 && center_chan <= 138)
3463                 return NOT_ALLOWED; /* Do not allow DFS channels for P2P */
3464
3465         /* check all the channels are available */
3466         for (i = 0; i < 4; i++) {
3467                 int adj_chan = center_chan - 6 + i * 4;
3468
3469                 res = has_channel(wpa_s->global, mode, adj_chan, &flags);
3470                 if (res == NOT_ALLOWED)
3471                         return NOT_ALLOWED;
3472                 if (res == PASSIVE_ONLY)
3473                         ret = PASSIVE_ONLY;
3474
3475                 if (i == 0 && !(flags & HOSTAPD_CHAN_VHT_10_70))
3476                         return NOT_ALLOWED;
3477                 if (i == 1 && !(flags & HOSTAPD_CHAN_VHT_30_50))
3478                         return NOT_ALLOWED;
3479                 if (i == 2 && !(flags & HOSTAPD_CHAN_VHT_50_30))
3480                         return NOT_ALLOWED;
3481                 if (i == 3 && !(flags & HOSTAPD_CHAN_VHT_70_10))
3482                         return NOT_ALLOWED;
3483         }
3484
3485         return ret;
3486 }
3487
3488
3489 static enum chan_allowed wpas_p2p_verify_channel(struct wpa_supplicant *wpa_s,
3490                                                  struct hostapd_hw_modes *mode,
3491                                                  u8 channel, u8 bw)
3492 {
3493         int flag = 0;
3494         enum chan_allowed res, res2;
3495
3496         res2 = res = has_channel(wpa_s->global, mode, channel, &flag);
3497         if (bw == BW40MINUS) {
3498                 if (!(flag & HOSTAPD_CHAN_HT40MINUS))
3499                         return NOT_ALLOWED;
3500                 res2 = has_channel(wpa_s->global, mode, channel - 4, NULL);
3501         } else if (bw == BW40PLUS) {
3502                 if (!(flag & HOSTAPD_CHAN_HT40PLUS))
3503                         return NOT_ALLOWED;
3504                 res2 = has_channel(wpa_s->global, mode, channel + 4, NULL);
3505         } else if (bw == BW80) {
3506                 res2 = wpas_p2p_verify_80mhz(wpa_s, mode, channel, bw);
3507         }
3508
3509         if (res == NOT_ALLOWED || res2 == NOT_ALLOWED)
3510                 return NOT_ALLOWED;
3511         if (res == PASSIVE_ONLY || res2 == PASSIVE_ONLY)
3512                 return PASSIVE_ONLY;
3513         return res;
3514 }
3515
3516
3517 static int wpas_p2p_setup_channels(struct wpa_supplicant *wpa_s,
3518                                    struct p2p_channels *chan,
3519                                    struct p2p_channels *cli_chan)
3520 {
3521         struct hostapd_hw_modes *mode;
3522         int cla, op, cli_cla;
3523
3524         if (wpa_s->hw.modes == NULL) {
3525                 wpa_printf(MSG_DEBUG, "P2P: Driver did not support fetching "
3526                            "of all supported channels; assume dualband "
3527                            "support");
3528                 return wpas_p2p_default_channels(wpa_s, chan, cli_chan);
3529         }
3530
3531         cla = cli_cla = 0;
3532
3533         for (op = 0; op_class[op].op_class; op++) {
3534                 struct p2p_oper_class_map *o = &op_class[op];
3535                 u8 ch;
3536                 struct p2p_reg_class *reg = NULL, *cli_reg = NULL;
3537
3538                 mode = get_mode(wpa_s->hw.modes, wpa_s->hw.num_modes, o->mode);
3539                 if (mode == NULL)
3540                         continue;
3541                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3542                         enum chan_allowed res;
3543                         res = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3544                         if (res == ALLOWED) {
3545                                 if (reg == NULL) {
3546                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u",
3547                                                    o->op_class);
3548                                         reg = &chan->reg_class[cla];
3549                                         cla++;
3550                                         reg->reg_class = o->op_class;
3551                                 }
3552                                 reg->channel[reg->channels] = ch;
3553                                 reg->channels++;
3554                         } else if (res == PASSIVE_ONLY &&
3555                                    wpa_s->conf->p2p_add_cli_chan) {
3556                                 if (cli_reg == NULL) {
3557                                         wpa_printf(MSG_DEBUG, "P2P: Add operating class %u (client only)",
3558                                                    o->op_class);
3559                                         cli_reg = &cli_chan->reg_class[cli_cla];
3560                                         cli_cla++;
3561                                         cli_reg->reg_class = o->op_class;
3562                                 }
3563                                 cli_reg->channel[cli_reg->channels] = ch;
3564                                 cli_reg->channels++;
3565                         }
3566                 }
3567                 if (reg) {
3568                         wpa_hexdump(MSG_DEBUG, "P2P: Channels",
3569                                     reg->channel, reg->channels);
3570                 }
3571                 if (cli_reg) {
3572                         wpa_hexdump(MSG_DEBUG, "P2P: Channels (client only)",
3573                                     cli_reg->channel, cli_reg->channels);
3574                 }
3575         }
3576
3577         chan->reg_classes = cla;
3578         cli_chan->reg_classes = cli_cla;
3579
3580         return 0;
3581 }
3582
3583
3584 int wpas_p2p_get_ht40_mode(struct wpa_supplicant *wpa_s,
3585                            struct hostapd_hw_modes *mode, u8 channel)
3586 {
3587         int op;
3588         enum chan_allowed ret;
3589
3590         for (op = 0; op_class[op].op_class; op++) {
3591                 struct p2p_oper_class_map *o = &op_class[op];
3592                 u8 ch;
3593
3594                 for (ch = o->min_chan; ch <= o->max_chan; ch += o->inc) {
3595                         if (o->mode != HOSTAPD_MODE_IEEE80211A ||
3596                             o->bw == BW20 || ch != channel)
3597                                 continue;
3598                         ret = wpas_p2p_verify_channel(wpa_s, mode, ch, o->bw);
3599                         if (ret == ALLOWED)
3600                                 return (o->bw == BW40MINUS) ? -1 : 1;
3601                 }
3602         }
3603         return 0;
3604 }
3605
3606
3607 int wpas_p2p_get_vht80_center(struct wpa_supplicant *wpa_s,
3608                               struct hostapd_hw_modes *mode, u8 channel)
3609 {
3610         if (!wpas_p2p_verify_channel(wpa_s, mode, channel, BW80))
3611                 return 0;
3612
3613         return wpas_p2p_get_center_80mhz(wpa_s, mode, channel);
3614 }
3615
3616
3617 static int wpas_get_noa(void *ctx, const u8 *interface_addr, u8 *buf,
3618                         size_t buf_len)
3619 {
3620         struct wpa_supplicant *wpa_s = ctx;
3621
3622         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3623                 if (os_memcmp(wpa_s->own_addr, interface_addr, ETH_ALEN) == 0)
3624                         break;
3625         }
3626         if (wpa_s == NULL)
3627                 return -1;
3628
3629         return wpa_drv_get_noa(wpa_s, buf, buf_len);
3630 }
3631
3632
3633 static int wpas_go_connected(void *ctx, const u8 *dev_addr)
3634 {
3635         struct wpa_supplicant *wpa_s = ctx;
3636
3637         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3638                 struct wpa_ssid *ssid = wpa_s->current_ssid;
3639                 if (ssid == NULL)
3640                         continue;
3641                 if (ssid->mode != WPAS_MODE_INFRA)
3642                         continue;
3643                 if (wpa_s->wpa_state != WPA_COMPLETED &&
3644                     wpa_s->wpa_state != WPA_GROUP_HANDSHAKE)
3645                         continue;
3646                 if (os_memcmp(wpa_s->go_dev_addr, dev_addr, ETH_ALEN) == 0)
3647                         return 1;
3648         }
3649
3650         return 0;
3651 }
3652
3653
3654 static int wpas_is_concurrent_session_active(void *ctx)
3655 {
3656         struct wpa_supplicant *wpa_s = ctx;
3657         struct wpa_supplicant *ifs;
3658
3659         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
3660                 if (ifs == wpa_s)
3661                         continue;
3662                 if (ifs->wpa_state > WPA_ASSOCIATED)
3663                         return 1;
3664         }
3665         return 0;
3666 }
3667
3668
3669 static void wpas_p2p_debug_print(void *ctx, int level, const char *msg)
3670 {
3671         struct wpa_supplicant *wpa_s = ctx;
3672         wpa_msg_global(wpa_s, level, "P2P: %s", msg);
3673 }
3674
3675
3676 int wpas_p2p_add_p2pdev_interface(struct wpa_supplicant *wpa_s)
3677 {
3678         struct wpa_interface iface;
3679         struct wpa_supplicant *p2pdev_wpa_s;
3680         char ifname[100];
3681         char force_name[100];
3682         int ret;
3683
3684         os_snprintf(ifname, sizeof(ifname), P2P_MGMT_DEVICE_PREFIX "%s",
3685                     wpa_s->ifname);
3686         force_name[0] = '\0';
3687         wpa_s->pending_interface_type = WPA_IF_P2P_DEVICE;
3688         ret = wpa_drv_if_add(wpa_s, WPA_IF_P2P_DEVICE, ifname, NULL, NULL,
3689                              force_name, wpa_s->pending_interface_addr, NULL);
3690         if (ret < 0) {
3691                 wpa_printf(MSG_DEBUG, "P2P: Failed to create P2P Device interface");
3692                 return ret;
3693         }
3694         os_strlcpy(wpa_s->pending_interface_name, ifname,
3695                    sizeof(wpa_s->pending_interface_name));
3696
3697         os_memset(&iface, 0, sizeof(iface));
3698         iface.p2p_mgmt = 1;
3699         iface.ifname = wpa_s->pending_interface_name;
3700         iface.driver = wpa_s->driver->name;
3701         iface.driver_param = wpa_s->conf->driver_param;
3702
3703         /*
3704          * If a P2P Device configuration file was given, use it as the interface
3705          * configuration file (instead of using parent's configuration file.
3706          */
3707         if (wpa_s->conf_p2p_dev) {
3708                 iface.confname = wpa_s->conf_p2p_dev;
3709                 iface.ctrl_interface = NULL;
3710         } else {
3711                 iface.confname = wpa_s->confname;
3712                 iface.ctrl_interface = wpa_s->conf->ctrl_interface;
3713         }
3714         iface.conf_p2p_dev = NULL;
3715
3716         p2pdev_wpa_s = wpa_supplicant_add_iface(wpa_s->global, &iface);
3717         if (!p2pdev_wpa_s) {
3718                 wpa_printf(MSG_DEBUG, "P2P: Failed to add P2P Device interface");
3719                 return -1;
3720         }
3721         p2pdev_wpa_s->parent = wpa_s;
3722
3723         wpa_s->pending_interface_name[0] = '\0';
3724         return 0;
3725 }
3726
3727
3728 static void wpas_presence_resp(void *ctx, const u8 *src, u8 status,
3729                                const u8 *noa, size_t noa_len)
3730 {
3731         struct wpa_supplicant *wpa_s, *intf = ctx;
3732         char hex[100];
3733
3734         for (wpa_s = intf->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3735                 if (wpa_s->waiting_presence_resp)
3736                         break;
3737         }
3738         if (!wpa_s) {
3739                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No group interface was waiting for presence response");
3740                 return;
3741         }
3742         wpa_s->waiting_presence_resp = 0;
3743
3744         wpa_snprintf_hex(hex, sizeof(hex), noa, noa_len);
3745         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_PRESENCE_RESPONSE "src=" MACSTR
3746                 " status=%u noa=%s", MAC2STR(src), status, hex);
3747 }
3748
3749
3750 static int _wpas_p2p_in_progress(void *ctx)
3751 {
3752         struct wpa_supplicant *wpa_s = ctx;
3753         return wpas_p2p_in_progress(wpa_s);
3754 }
3755
3756
3757 /**
3758  * wpas_p2p_init - Initialize P2P module for %wpa_supplicant
3759  * @global: Pointer to global data from wpa_supplicant_init()
3760  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3761  * Returns: 0 on success, -1 on failure
3762  */
3763 int wpas_p2p_init(struct wpa_global *global, struct wpa_supplicant *wpa_s)
3764 {
3765         struct p2p_config p2p;
3766         unsigned int r;
3767         int i;
3768
3769         if (wpa_s->conf->p2p_disabled)
3770                 return 0;
3771
3772         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
3773                 return 0;
3774
3775         if (global->p2p)
3776                 return 0;
3777
3778         os_memset(&p2p, 0, sizeof(p2p));
3779         p2p.cb_ctx = wpa_s;
3780         p2p.debug_print = wpas_p2p_debug_print;
3781         p2p.p2p_scan = wpas_p2p_scan;
3782         p2p.send_action = wpas_send_action;
3783         p2p.send_action_done = wpas_send_action_done;
3784         p2p.go_neg_completed = wpas_go_neg_completed;
3785         p2p.go_neg_req_rx = wpas_go_neg_req_rx;
3786         p2p.dev_found = wpas_dev_found;
3787         p2p.dev_lost = wpas_dev_lost;
3788         p2p.find_stopped = wpas_find_stopped;
3789         p2p.start_listen = wpas_start_listen;
3790         p2p.stop_listen = wpas_stop_listen;
3791         p2p.send_probe_resp = wpas_send_probe_resp;
3792         p2p.sd_request = wpas_sd_request;
3793         p2p.sd_response = wpas_sd_response;
3794         p2p.prov_disc_req = wpas_prov_disc_req;
3795         p2p.prov_disc_resp = wpas_prov_disc_resp;
3796         p2p.prov_disc_fail = wpas_prov_disc_fail;
3797         p2p.invitation_process = wpas_invitation_process;
3798         p2p.invitation_received = wpas_invitation_received;
3799         p2p.invitation_result = wpas_invitation_result;
3800         p2p.get_noa = wpas_get_noa;
3801         p2p.go_connected = wpas_go_connected;
3802         p2p.presence_resp = wpas_presence_resp;
3803         p2p.is_concurrent_session_active = wpas_is_concurrent_session_active;
3804         p2p.is_p2p_in_progress = _wpas_p2p_in_progress;
3805
3806         os_memcpy(wpa_s->global->p2p_dev_addr, wpa_s->own_addr, ETH_ALEN);
3807         os_memcpy(p2p.dev_addr, wpa_s->global->p2p_dev_addr, ETH_ALEN);
3808         p2p.dev_name = wpa_s->conf->device_name;
3809         p2p.manufacturer = wpa_s->conf->manufacturer;
3810         p2p.model_name = wpa_s->conf->model_name;
3811         p2p.model_number = wpa_s->conf->model_number;
3812         p2p.serial_number = wpa_s->conf->serial_number;
3813         if (wpa_s->wps) {
3814                 os_memcpy(p2p.uuid, wpa_s->wps->uuid, 16);
3815                 p2p.config_methods = wpa_s->wps->config_methods;
3816         }
3817
3818         if (wpa_s->conf->p2p_listen_reg_class &&
3819             wpa_s->conf->p2p_listen_channel) {
3820                 p2p.reg_class = wpa_s->conf->p2p_listen_reg_class;
3821                 p2p.channel = wpa_s->conf->p2p_listen_channel;
3822         } else {
3823                 p2p.reg_class = 81;
3824                 /*
3825                  * Pick one of the social channels randomly as the listen
3826                  * channel.
3827                  */
3828                 os_get_random((u8 *) &r, sizeof(r));
3829                 p2p.channel = 1 + (r % 3) * 5;
3830         }
3831         wpa_printf(MSG_DEBUG, "P2P: Own listen channel: %d", p2p.channel);
3832
3833         if (wpa_s->conf->p2p_oper_reg_class &&
3834             wpa_s->conf->p2p_oper_channel) {
3835                 p2p.op_reg_class = wpa_s->conf->p2p_oper_reg_class;
3836                 p2p.op_channel = wpa_s->conf->p2p_oper_channel;
3837                 p2p.cfg_op_channel = 1;
3838                 wpa_printf(MSG_DEBUG, "P2P: Configured operating channel: "
3839                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3840
3841         } else {
3842                 p2p.op_reg_class = 81;
3843                 /*
3844                  * Use random operation channel from (1, 6, 11) if no other
3845                  * preference is indicated.
3846                  */
3847                 os_get_random((u8 *) &r, sizeof(r));
3848                 p2p.op_channel = 1 + (r % 3) * 5;
3849                 p2p.cfg_op_channel = 0;
3850                 wpa_printf(MSG_DEBUG, "P2P: Random operating channel: "
3851                            "%d:%d", p2p.op_reg_class, p2p.op_channel);
3852         }
3853
3854         if (wpa_s->conf->p2p_pref_chan && wpa_s->conf->num_p2p_pref_chan) {
3855                 p2p.pref_chan = wpa_s->conf->p2p_pref_chan;
3856                 p2p.num_pref_chan = wpa_s->conf->num_p2p_pref_chan;
3857         }
3858
3859         if (wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
3860                 os_memcpy(p2p.country, wpa_s->conf->country, 2);
3861                 p2p.country[2] = 0x04;
3862         } else
3863                 os_memcpy(p2p.country, "XX\x04", 3);
3864
3865         if (wpas_p2p_setup_channels(wpa_s, &p2p.channels, &p2p.cli_channels)) {
3866                 wpa_printf(MSG_ERROR, "P2P: Failed to configure supported "
3867                            "channel list");
3868                 return -1;
3869         }
3870
3871         os_memcpy(p2p.pri_dev_type, wpa_s->conf->device_type,
3872                   WPS_DEV_TYPE_LEN);
3873
3874         p2p.num_sec_dev_types = wpa_s->conf->num_sec_device_types;
3875         os_memcpy(p2p.sec_dev_type, wpa_s->conf->sec_device_type,
3876                   p2p.num_sec_dev_types * WPS_DEV_TYPE_LEN);
3877
3878         p2p.concurrent_operations = !!(wpa_s->drv_flags &
3879                                        WPA_DRIVER_FLAGS_P2P_CONCURRENT);
3880
3881         p2p.max_peers = 100;
3882
3883         if (wpa_s->conf->p2p_ssid_postfix) {
3884                 p2p.ssid_postfix_len =
3885                         os_strlen(wpa_s->conf->p2p_ssid_postfix);
3886                 if (p2p.ssid_postfix_len > sizeof(p2p.ssid_postfix))
3887                         p2p.ssid_postfix_len = sizeof(p2p.ssid_postfix);
3888                 os_memcpy(p2p.ssid_postfix, wpa_s->conf->p2p_ssid_postfix,
3889                           p2p.ssid_postfix_len);
3890         }
3891
3892         p2p.p2p_intra_bss = wpa_s->conf->p2p_intra_bss;
3893
3894         p2p.max_listen = wpa_s->max_remain_on_chan;
3895
3896         global->p2p = p2p_init(&p2p);
3897         if (global->p2p == NULL)
3898                 return -1;
3899         global->p2p_init_wpa_s = wpa_s;
3900
3901         for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
3902                 if (wpa_s->conf->wps_vendor_ext[i] == NULL)
3903                         continue;
3904                 p2p_add_wps_vendor_extension(
3905                         global->p2p, wpa_s->conf->wps_vendor_ext[i]);
3906         }
3907
3908         p2p_set_no_go_freq(global->p2p, &wpa_s->conf->p2p_no_go_freq);
3909
3910         return 0;
3911 }
3912
3913
3914 /**
3915  * wpas_p2p_deinit - Deinitialize per-interface P2P data
3916  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
3917  *
3918  * This function deinitialize per-interface P2P data.
3919  */
3920 void wpas_p2p_deinit(struct wpa_supplicant *wpa_s)
3921 {
3922         if (wpa_s->driver && wpa_s->drv_priv)
3923                 wpa_drv_probe_req_report(wpa_s, 0);
3924
3925         if (wpa_s->go_params) {
3926                 /* Clear any stored provisioning info */
3927                 p2p_clear_provisioning_info(
3928                         wpa_s->global->p2p,
3929                         wpa_s->go_params->peer_device_addr);
3930         }
3931
3932         os_free(wpa_s->go_params);
3933         wpa_s->go_params = NULL;
3934         eloop_cancel_timeout(wpas_p2p_psk_failure_removal, wpa_s, NULL);
3935         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
3936         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
3937         wpa_s->p2p_long_listen = 0;
3938         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
3939         eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
3940         wpas_p2p_remove_pending_group_interface(wpa_s);
3941         eloop_cancel_timeout(wpas_p2p_group_freq_conflict, wpa_s, NULL);
3942         wpas_p2p_listen_work_done(wpa_s);
3943         if (wpa_s->p2p_send_action_work) {
3944                 os_free(wpa_s->p2p_send_action_work->ctx);
3945                 radio_work_done(wpa_s->p2p_send_action_work);
3946                 wpa_s->p2p_send_action_work = NULL;
3947         }
3948         eloop_cancel_timeout(wpas_p2p_send_action_work_timeout, wpa_s, NULL);
3949
3950         wpabuf_free(wpa_s->p2p_oob_dev_pw);
3951         wpa_s->p2p_oob_dev_pw = NULL;
3952
3953         /* TODO: remove group interface from the driver if this wpa_s instance
3954          * is on top of a P2P group interface */
3955 }
3956
3957
3958 /**
3959  * wpas_p2p_deinit_global - Deinitialize global P2P module
3960  * @global: Pointer to global data from wpa_supplicant_init()
3961  *
3962  * This function deinitializes the global (per device) P2P module.
3963  */
3964 void wpas_p2p_deinit_global(struct wpa_global *global)
3965 {
3966         struct wpa_supplicant *wpa_s, *tmp;
3967
3968         wpa_s = global->ifaces;
3969         if (wpa_s)
3970                 wpas_p2p_service_flush(wpa_s);
3971
3972         if (global->p2p == NULL)
3973                 return;
3974
3975         /* Remove remaining P2P group interfaces */
3976         while (wpa_s && wpa_s->p2p_group_interface != NOT_P2P_GROUP_INTERFACE)
3977                 wpa_s = wpa_s->next;
3978         while (wpa_s) {
3979                 tmp = global->ifaces;
3980                 while (tmp &&
3981                        (tmp == wpa_s ||
3982                         tmp->p2p_group_interface == NOT_P2P_GROUP_INTERFACE)) {
3983                         tmp = tmp->next;
3984                 }
3985                 if (tmp == NULL)
3986                         break;
3987                 /* Disconnect from the P2P group and deinit the interface */
3988                 wpas_p2p_disconnect(tmp);
3989         }
3990
3991         /*
3992          * Deinit GO data on any possibly remaining interface (if main
3993          * interface is used as GO).
3994          */
3995         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
3996                 if (wpa_s->ap_iface)
3997                         wpas_p2p_group_deinit(wpa_s);
3998         }
3999
4000         p2p_deinit(global->p2p);
4001         global->p2p = NULL;
4002         global->p2p_init_wpa_s = NULL;
4003 }
4004
4005
4006 static int wpas_p2p_create_iface(struct wpa_supplicant *wpa_s)
4007 {
4008         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_DEDICATED_P2P_DEVICE) &&
4009             wpa_s->conf->p2p_no_group_iface)
4010                 return 0; /* separate interface disabled per configuration */
4011         if (wpa_s->drv_flags &
4012             (WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE |
4013              WPA_DRIVER_FLAGS_P2P_MGMT_AND_NON_P2P))
4014                 return 1; /* P2P group requires a new interface in every case
4015                            */
4016         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CONCURRENT))
4017                 return 0; /* driver does not support concurrent operations */
4018         if (wpa_s->global->ifaces->next)
4019                 return 1; /* more that one interface already in use */
4020         if (wpa_s->wpa_state >= WPA_AUTHENTICATING)
4021                 return 1; /* this interface is already in use */
4022         return 0;
4023 }
4024
4025
4026 static int wpas_p2p_start_go_neg(struct wpa_supplicant *wpa_s,
4027                                  const u8 *peer_addr,
4028                                  enum p2p_wps_method wps_method,
4029                                  int go_intent, const u8 *own_interface_addr,
4030                                  unsigned int force_freq, int persistent_group,
4031                                  struct wpa_ssid *ssid, unsigned int pref_freq)
4032 {
4033         if (persistent_group && wpa_s->conf->persistent_reconnect)
4034                 persistent_group = 2;
4035
4036         /*
4037          * Increase GO config timeout if HT40 is used since it takes some time
4038          * to scan channels for coex purposes before the BSS can be started.
4039          */
4040         p2p_set_config_timeout(wpa_s->global->p2p,
4041                                wpa_s->p2p_go_ht40 ? 255 : 100, 20);
4042
4043         return p2p_connect(wpa_s->global->p2p, peer_addr, wps_method,
4044                            go_intent, own_interface_addr, force_freq,
4045                            persistent_group, ssid ? ssid->ssid : NULL,
4046                            ssid ? ssid->ssid_len : 0,
4047                            wpa_s->p2p_pd_before_go_neg, pref_freq,
4048                            wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4049                            0);
4050 }
4051
4052
4053 static int wpas_p2p_auth_go_neg(struct wpa_supplicant *wpa_s,
4054                                 const u8 *peer_addr,
4055                                 enum p2p_wps_method wps_method,
4056                                 int go_intent, const u8 *own_interface_addr,
4057                                 unsigned int force_freq, int persistent_group,
4058                                 struct wpa_ssid *ssid, unsigned int pref_freq)
4059 {
4060         if (persistent_group && wpa_s->conf->persistent_reconnect)
4061                 persistent_group = 2;
4062
4063         return p2p_authorize(wpa_s->global->p2p, peer_addr, wps_method,
4064                              go_intent, own_interface_addr, force_freq,
4065                              persistent_group, ssid ? ssid->ssid : NULL,
4066                              ssid ? ssid->ssid_len : 0, pref_freq,
4067                              wps_method == WPS_NFC ? wpa_s->p2p_oob_dev_pw_id :
4068                              0);
4069 }
4070
4071
4072 static void wpas_p2p_check_join_scan_limit(struct wpa_supplicant *wpa_s)
4073 {
4074         wpa_s->p2p_join_scan_count++;
4075         wpa_printf(MSG_DEBUG, "P2P: Join scan attempt %d",
4076                    wpa_s->p2p_join_scan_count);
4077         if (wpa_s->p2p_join_scan_count > P2P_MAX_JOIN_SCAN_ATTEMPTS) {
4078                 wpa_printf(MSG_DEBUG, "P2P: Failed to find GO " MACSTR
4079                            " for join operationg - stop join attempt",
4080                            MAC2STR(wpa_s->pending_join_iface_addr));
4081                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4082                 if (wpa_s->p2p_auto_pd) {
4083                         wpa_s->p2p_auto_pd = 0;
4084                         wpa_msg_global(wpa_s, MSG_INFO,
4085                                        P2P_EVENT_PROV_DISC_FAILURE
4086                                        " p2p_dev_addr=" MACSTR " status=N/A",
4087                                        MAC2STR(wpa_s->pending_join_dev_addr));
4088                         return;
4089                 }
4090                 wpa_msg_global(wpa_s->parent, MSG_INFO,
4091                                P2P_EVENT_GROUP_FORMATION_FAILURE);
4092         }
4093 }
4094
4095
4096 static int wpas_check_freq_conflict(struct wpa_supplicant *wpa_s, int freq)
4097 {
4098         int *freqs, res, num, i;
4099
4100         if (wpas_p2p_num_unused_channels(wpa_s) > 0) {
4101                 /* Multiple channels are supported and not all are in use */
4102                 return 0;
4103         }
4104
4105         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4106         if (!freqs)
4107                 return 1;
4108
4109         num = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
4110                                         wpa_s->num_multichan_concurrent);
4111         if (num < 0) {
4112                 res = 1;
4113                 goto exit_free;
4114         }
4115
4116         for (i = 0; i < num; i++) {
4117                 if (freqs[i] == freq) {
4118                         wpa_printf(MSG_DEBUG, "P2P: Frequency %d MHz in use by another virtual interface and can be used",
4119                                    freq);
4120                         res = 0;
4121                         goto exit_free;
4122                 }
4123         }
4124
4125         res = 1;
4126
4127 exit_free:
4128         os_free(freqs);
4129         return res;
4130 }
4131
4132
4133 static int wpas_p2p_peer_go(struct wpa_supplicant *wpa_s,
4134                             const u8 *peer_dev_addr)
4135 {
4136         struct wpa_bss *bss;
4137         int updated;
4138
4139         bss = wpa_bss_get_p2p_dev_addr(wpa_s, peer_dev_addr);
4140         if (bss == NULL)
4141                 return -1;
4142         if (bss->last_update_idx < wpa_s->bss_update_idx) {
4143                 wpa_printf(MSG_DEBUG, "P2P: Peer BSS entry not updated in the "
4144                            "last scan");
4145                 return 0;
4146         }
4147
4148         updated = os_reltime_before(&wpa_s->p2p_auto_started,
4149                                     &bss->last_update);
4150         wpa_printf(MSG_DEBUG, "P2P: Current BSS entry for peer updated at "
4151                    "%ld.%06ld (%supdated in last scan)",
4152                    bss->last_update.sec, bss->last_update.usec,
4153                    updated ? "": "not ");
4154
4155         return updated;
4156 }
4157
4158
4159 static void wpas_p2p_scan_res_join(struct wpa_supplicant *wpa_s,
4160                                    struct wpa_scan_results *scan_res)
4161 {
4162         struct wpa_bss *bss = NULL;
4163         int freq;
4164         u8 iface_addr[ETH_ALEN];
4165
4166         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4167
4168         if (wpa_s->global->p2p_disabled)
4169                 return;
4170
4171         wpa_printf(MSG_DEBUG, "P2P: Scan results received (%d BSS) for %sjoin",
4172                    scan_res ? (int) scan_res->num : -1,
4173                    wpa_s->p2p_auto_join ? "auto_" : "");
4174
4175         if (scan_res)
4176                 wpas_p2p_scan_res_handler(wpa_s, scan_res);
4177
4178         if (wpa_s->p2p_auto_pd) {
4179                 int join = wpas_p2p_peer_go(wpa_s,
4180                                             wpa_s->pending_join_dev_addr);
4181                 if (join == 0 &&
4182                     wpa_s->auto_pd_scan_retry < P2P_AUTO_PD_SCAN_ATTEMPTS) {
4183                         wpa_s->auto_pd_scan_retry++;
4184                         bss = wpa_bss_get_bssid_latest(
4185                                 wpa_s, wpa_s->pending_join_dev_addr);
4186                         if (bss) {
4187                                 freq = bss->freq;
4188                                 wpa_printf(MSG_DEBUG, "P2P: Scan retry %d for "
4189                                            "the peer " MACSTR " at %d MHz",
4190                                            wpa_s->auto_pd_scan_retry,
4191                                            MAC2STR(wpa_s->
4192                                                    pending_join_dev_addr),
4193                                            freq);
4194                                 wpas_p2p_join_scan_req(wpa_s, freq, NULL, 0);
4195                                 return;
4196                         }
4197                 }
4198
4199                 if (join < 0)
4200                         join = 0;
4201
4202                 wpa_s->p2p_auto_pd = 0;
4203                 wpa_s->pending_pd_use = join ? AUTO_PD_JOIN : AUTO_PD_GO_NEG;
4204                 wpa_printf(MSG_DEBUG, "P2P: Auto PD with " MACSTR " join=%d",
4205                            MAC2STR(wpa_s->pending_join_dev_addr), join);
4206                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4207                                       wpa_s->pending_join_dev_addr,
4208                                       wpa_s->pending_pd_config_methods, join,
4209                                       0, wpa_s->user_initiated_pd) < 0) {
4210                         wpa_s->p2p_auto_pd = 0;
4211                         wpa_msg_global(wpa_s, MSG_INFO,
4212                                        P2P_EVENT_PROV_DISC_FAILURE
4213                                        " p2p_dev_addr=" MACSTR " status=N/A",
4214                                        MAC2STR(wpa_s->pending_join_dev_addr));
4215                 }
4216                 return;
4217         }
4218
4219         if (wpa_s->p2p_auto_join) {
4220                 int join = wpas_p2p_peer_go(wpa_s,
4221                                             wpa_s->pending_join_dev_addr);
4222                 if (join < 0) {
4223                         wpa_printf(MSG_DEBUG, "P2P: Peer was not found to be "
4224                                    "running a GO -> use GO Negotiation");
4225                         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr,
4226                                          wpa_s->p2p_pin, wpa_s->p2p_wps_method,
4227                                          wpa_s->p2p_persistent_group, 0, 0, 0,
4228                                          wpa_s->p2p_go_intent,
4229                                          wpa_s->p2p_connect_freq,
4230                                          wpa_s->p2p_persistent_id,
4231                                          wpa_s->p2p_pd_before_go_neg,
4232                                          wpa_s->p2p_go_ht40,
4233                                          wpa_s->p2p_go_vht);
4234                         return;
4235                 }
4236
4237                 wpa_printf(MSG_DEBUG, "P2P: Peer was found running GO%s -> "
4238                            "try to join the group", join ? "" :
4239                            " in older scan");
4240                 if (!join)
4241                         wpa_s->p2p_fallback_to_go_neg = 1;
4242         }
4243
4244         freq = p2p_get_oper_freq(wpa_s->global->p2p,
4245                                  wpa_s->pending_join_iface_addr);
4246         if (freq < 0 &&
4247             p2p_get_interface_addr(wpa_s->global->p2p,
4248                                    wpa_s->pending_join_dev_addr,
4249                                    iface_addr) == 0 &&
4250             os_memcmp(iface_addr, wpa_s->pending_join_dev_addr, ETH_ALEN) != 0)
4251         {
4252                 wpa_printf(MSG_DEBUG, "P2P: Overwrite pending interface "
4253                            "address for join from " MACSTR " to " MACSTR
4254                            " based on newly discovered P2P peer entry",
4255                            MAC2STR(wpa_s->pending_join_iface_addr),
4256                            MAC2STR(iface_addr));
4257                 os_memcpy(wpa_s->pending_join_iface_addr, iface_addr,
4258                           ETH_ALEN);
4259
4260                 freq = p2p_get_oper_freq(wpa_s->global->p2p,
4261                                          wpa_s->pending_join_iface_addr);
4262         }
4263         if (freq >= 0) {
4264                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4265                            "from P2P peer table: %d MHz", freq);
4266         }
4267         if (wpa_s->p2p_join_ssid_len) {
4268                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4269                            MACSTR " and SSID %s",
4270                            MAC2STR(wpa_s->pending_join_iface_addr),
4271                            wpa_ssid_txt(wpa_s->p2p_join_ssid,
4272                                         wpa_s->p2p_join_ssid_len));
4273                 bss = wpa_bss_get(wpa_s, wpa_s->pending_join_iface_addr,
4274                                   wpa_s->p2p_join_ssid,
4275                                   wpa_s->p2p_join_ssid_len);
4276         }
4277         if (!bss) {
4278                 wpa_printf(MSG_DEBUG, "P2P: Trying to find target GO BSS entry based on BSSID "
4279                            MACSTR, MAC2STR(wpa_s->pending_join_iface_addr));
4280                 bss = wpa_bss_get_bssid_latest(wpa_s,
4281                                                wpa_s->pending_join_iface_addr);
4282         }
4283         if (bss) {
4284                 freq = bss->freq;
4285                 wpa_printf(MSG_DEBUG, "P2P: Target GO operating frequency "
4286                            "from BSS table: %d MHz (SSID %s)", freq,
4287                            wpa_ssid_txt(bss->ssid, bss->ssid_len));
4288         }
4289         if (freq > 0) {
4290                 u16 method;
4291
4292                 if (wpas_check_freq_conflict(wpa_s, freq) > 0) {
4293                         wpa_msg_global(wpa_s->parent, MSG_INFO,
4294                                        P2P_EVENT_GROUP_FORMATION_FAILURE
4295                                        "reason=FREQ_CONFLICT");
4296                         return;
4297                 }
4298
4299                 wpa_printf(MSG_DEBUG, "P2P: Send Provision Discovery Request "
4300                            "prior to joining an existing group (GO " MACSTR
4301                            " freq=%u MHz)",
4302                            MAC2STR(wpa_s->pending_join_dev_addr), freq);
4303                 wpa_s->pending_pd_before_join = 1;
4304
4305                 switch (wpa_s->pending_join_wps_method) {
4306                 case WPS_PIN_DISPLAY:
4307                         method = WPS_CONFIG_KEYPAD;
4308                         break;
4309                 case WPS_PIN_KEYPAD:
4310                         method = WPS_CONFIG_DISPLAY;
4311                         break;
4312                 case WPS_PBC:
4313                         method = WPS_CONFIG_PUSHBUTTON;
4314                         break;
4315                 default:
4316                         method = 0;
4317                         break;
4318                 }
4319
4320                 if ((p2p_get_provisioning_info(wpa_s->global->p2p,
4321                                                wpa_s->pending_join_dev_addr) ==
4322                      method)) {
4323                         /*
4324                          * We have already performed provision discovery for
4325                          * joining the group. Proceed directly to join
4326                          * operation without duplicated provision discovery. */
4327                         wpa_printf(MSG_DEBUG, "P2P: Provision discovery "
4328                                    "with " MACSTR " already done - proceed to "
4329                                    "join",
4330                                    MAC2STR(wpa_s->pending_join_dev_addr));
4331                         wpa_s->pending_pd_before_join = 0;
4332                         goto start;
4333                 }
4334
4335                 if (p2p_prov_disc_req(wpa_s->global->p2p,
4336                                       wpa_s->pending_join_dev_addr, method, 1,
4337                                       freq, wpa_s->user_initiated_pd) < 0) {
4338                         wpa_printf(MSG_DEBUG, "P2P: Failed to send Provision "
4339                                    "Discovery Request before joining an "
4340                                    "existing group");
4341                         wpa_s->pending_pd_before_join = 0;
4342                         goto start;
4343                 }
4344                 return;
4345         }
4346
4347         wpa_printf(MSG_DEBUG, "P2P: Failed to find BSS/GO - try again later");
4348         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4349         eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4350         wpas_p2p_check_join_scan_limit(wpa_s);
4351         return;
4352
4353 start:
4354         /* Start join operation immediately */
4355         wpas_p2p_join_start(wpa_s, 0, NULL, 0);
4356 }
4357
4358
4359 static void wpas_p2p_join_scan_req(struct wpa_supplicant *wpa_s, int freq,
4360                                    const u8 *ssid, size_t ssid_len)
4361 {
4362         int ret;
4363         struct wpa_driver_scan_params params;
4364         struct wpabuf *wps_ie, *ies;
4365         size_t ielen;
4366         int freqs[2] = { 0, 0 };
4367
4368         os_memset(&params, 0, sizeof(params));
4369
4370         /* P2P Wildcard SSID */
4371         params.num_ssids = 1;
4372         if (ssid && ssid_len) {
4373                 params.ssids[0].ssid = ssid;
4374                 params.ssids[0].ssid_len = ssid_len;
4375                 os_memcpy(wpa_s->p2p_join_ssid, ssid, ssid_len);
4376                 wpa_s->p2p_join_ssid_len = ssid_len;
4377         } else {
4378                 params.ssids[0].ssid = (u8 *) P2P_WILDCARD_SSID;
4379                 params.ssids[0].ssid_len = P2P_WILDCARD_SSID_LEN;
4380                 wpa_s->p2p_join_ssid_len = 0;
4381         }
4382
4383         wpa_s->wps->dev.p2p = 1;
4384         wps_ie = wps_build_probe_req_ie(DEV_PW_DEFAULT, &wpa_s->wps->dev,
4385                                         wpa_s->wps->uuid, WPS_REQ_ENROLLEE, 0,
4386                                         NULL);
4387         if (wps_ie == NULL) {
4388                 wpas_p2p_scan_res_join(wpa_s, NULL);
4389                 return;
4390         }
4391
4392         ielen = p2p_scan_ie_buf_len(wpa_s->global->p2p);
4393         ies = wpabuf_alloc(wpabuf_len(wps_ie) + ielen);
4394         if (ies == NULL) {
4395                 wpabuf_free(wps_ie);
4396                 wpas_p2p_scan_res_join(wpa_s, NULL);
4397                 return;
4398         }
4399         wpabuf_put_buf(ies, wps_ie);
4400         wpabuf_free(wps_ie);
4401
4402         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
4403
4404         params.p2p_probe = 1;
4405         params.extra_ies = wpabuf_head(ies);
4406         params.extra_ies_len = wpabuf_len(ies);
4407
4408         if (!freq) {
4409                 int oper_freq;
4410                 /*
4411                  * If freq is not provided, check the operating freq of the GO
4412                  * and use a single channel scan on if possible.
4413                  */
4414                 oper_freq = p2p_get_oper_freq(wpa_s->global->p2p,
4415                                               wpa_s->pending_join_iface_addr);
4416                 if (oper_freq > 0)
4417                         freq = oper_freq;
4418         }
4419         if (freq > 0) {
4420                 freqs[0] = freq;
4421                 params.freqs = freqs;
4422         }
4423
4424         /*
4425          * Run a scan to update BSS table and start Provision Discovery once
4426          * the new scan results become available.
4427          */
4428         ret = wpa_drv_scan(wpa_s, &params);
4429         if (!ret) {
4430                 os_get_reltime(&wpa_s->scan_trigger_time);
4431                 wpa_s->scan_res_handler = wpas_p2p_scan_res_join;
4432                 wpa_s->own_scan_requested = 1;
4433         }
4434
4435         wpabuf_free(ies);
4436
4437         if (ret) {
4438                 wpa_printf(MSG_DEBUG, "P2P: Failed to start scan for join - "
4439                            "try again later");
4440                 eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
4441                 eloop_register_timeout(1, 0, wpas_p2p_join_scan, wpa_s, NULL);
4442                 wpas_p2p_check_join_scan_limit(wpa_s);
4443         }
4444 }
4445
4446
4447 static void wpas_p2p_join_scan(void *eloop_ctx, void *timeout_ctx)
4448 {
4449         struct wpa_supplicant *wpa_s = eloop_ctx;
4450         wpas_p2p_join_scan_req(wpa_s, 0, NULL, 0);
4451 }
4452
4453
4454 static int wpas_p2p_join(struct wpa_supplicant *wpa_s, const u8 *iface_addr,
4455                          const u8 *dev_addr, enum p2p_wps_method wps_method,
4456                          int auto_join, int op_freq,
4457                          const u8 *ssid, size_t ssid_len)
4458 {
4459         wpa_printf(MSG_DEBUG, "P2P: Request to join existing group (iface "
4460                    MACSTR " dev " MACSTR " op_freq=%d)%s",
4461                    MAC2STR(iface_addr), MAC2STR(dev_addr), op_freq,
4462                    auto_join ? " (auto_join)" : "");
4463         if (ssid && ssid_len) {
4464                 wpa_printf(MSG_DEBUG, "P2P: Group SSID specified: %s",
4465                            wpa_ssid_txt(ssid, ssid_len));
4466         }
4467
4468         wpa_s->p2p_auto_pd = 0;
4469         wpa_s->p2p_auto_join = !!auto_join;
4470         os_memcpy(wpa_s->pending_join_iface_addr, iface_addr, ETH_ALEN);
4471         os_memcpy(wpa_s->pending_join_dev_addr, dev_addr, ETH_ALEN);
4472         wpa_s->pending_join_wps_method = wps_method;
4473
4474         /* Make sure we are not running find during connection establishment */
4475         wpas_p2p_stop_find(wpa_s);
4476
4477         wpa_s->p2p_join_scan_count = 0;
4478         wpas_p2p_join_scan_req(wpa_s, op_freq, ssid, ssid_len);
4479         return 0;
4480 }
4481
4482
4483 static int wpas_p2p_join_start(struct wpa_supplicant *wpa_s, int freq,
4484                                const u8 *ssid, size_t ssid_len)
4485 {
4486         struct wpa_supplicant *group;
4487         struct p2p_go_neg_results res;
4488         struct wpa_bss *bss;
4489
4490         group = wpas_p2p_get_group_iface(wpa_s, 0, 0);
4491         if (group == NULL)
4492                 return -1;
4493         if (group != wpa_s) {
4494                 os_memcpy(group->p2p_pin, wpa_s->p2p_pin,
4495                           sizeof(group->p2p_pin));
4496                 group->p2p_wps_method = wpa_s->p2p_wps_method;
4497         } else {
4498                 /*
4499                  * Need to mark the current interface for p2p_group_formation
4500                  * when a separate group interface is not used. This is needed
4501                  * to allow p2p_cancel stop a pending p2p_connect-join.
4502                  * wpas_p2p_init_group_interface() addresses this for the case
4503                  * where a separate group interface is used.
4504                  */
4505                 wpa_s->global->p2p_group_formation = wpa_s;
4506         }
4507
4508         group->p2p_in_provisioning = 1;
4509         group->p2p_fallback_to_go_neg = wpa_s->p2p_fallback_to_go_neg;
4510
4511         os_memset(&res, 0, sizeof(res));
4512         os_memcpy(res.peer_device_addr, wpa_s->pending_join_dev_addr, ETH_ALEN);
4513         os_memcpy(res.peer_interface_addr, wpa_s->pending_join_iface_addr,
4514                   ETH_ALEN);
4515         res.wps_method = wpa_s->pending_join_wps_method;
4516         if (freq && ssid && ssid_len) {
4517                 res.freq = freq;
4518                 res.ssid_len = ssid_len;
4519                 os_memcpy(res.ssid, ssid, ssid_len);
4520         } else {
4521                 bss = wpa_bss_get_bssid_latest(wpa_s,
4522                                                wpa_s->pending_join_iface_addr);
4523                 if (bss) {
4524                         res.freq = bss->freq;
4525                         res.ssid_len = bss->ssid_len;
4526                         os_memcpy(res.ssid, bss->ssid, bss->ssid_len);
4527                         wpa_printf(MSG_DEBUG, "P2P: Join target GO operating frequency from BSS table: %d MHz (SSID %s)",
4528                                    bss->freq,
4529                                    wpa_ssid_txt(bss->ssid, bss->ssid_len));
4530                 }
4531         }
4532
4533         if (wpa_s->off_channel_freq || wpa_s->roc_waiting_drv_freq) {
4534                 wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel prior to "
4535                            "starting client");
4536                 wpa_drv_cancel_remain_on_channel(wpa_s);
4537                 wpa_s->off_channel_freq = 0;
4538                 wpa_s->roc_waiting_drv_freq = 0;
4539         }
4540         wpas_start_wps_enrollee(group, &res);
4541
4542         /*
4543          * Allow a longer timeout for join-a-running-group than normal 15
4544          * second group formation timeout since the GO may not have authorized
4545          * our connection yet.
4546          */
4547         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s, NULL);
4548         eloop_register_timeout(60, 0, wpas_p2p_group_formation_timeout,
4549                                wpa_s, NULL);
4550
4551         return 0;
4552 }
4553
4554
4555 static int wpas_p2p_setup_freqs(struct wpa_supplicant *wpa_s, int freq,
4556                                 int *force_freq, int *pref_freq, int go)
4557 {
4558         int *freqs, res;
4559         unsigned int freq_in_use = 0, num, i;
4560
4561         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
4562         if (!freqs)
4563                 return -1;
4564
4565         num = get_shared_radio_freqs(wpa_s, freqs,
4566                                      wpa_s->num_multichan_concurrent);
4567         wpa_printf(MSG_DEBUG,
4568                    "P2P: Setup freqs: freq=%d num_MCC=%d shared_freqs=%u",
4569                    freq, wpa_s->num_multichan_concurrent, num);
4570
4571         if (freq > 0) {
4572                 int ret;
4573                 if (go)
4574                         ret = p2p_supported_freq(wpa_s->global->p2p, freq);
4575                 else
4576                         ret = p2p_supported_freq_cli(wpa_s->global->p2p, freq);
4577                 if (!ret) {
4578                         wpa_printf(MSG_DEBUG, "P2P: The forced channel "
4579                                    "(%u MHz) is not supported for P2P uses",
4580                                    freq);
4581                         res = -3;
4582                         goto exit_free;
4583                 }
4584
4585                 for (i = 0; i < num; i++) {
4586                         if (freqs[i] == freq)
4587                                 freq_in_use = 1;
4588                 }
4589
4590                 if (num == wpa_s->num_multichan_concurrent && !freq_in_use) {
4591                         wpa_printf(MSG_DEBUG, "P2P: Cannot start P2P group on %u MHz as there are no available channels",
4592                                    freq);
4593                         res = -2;
4594                         goto exit_free;
4595                 }
4596                 wpa_printf(MSG_DEBUG, "P2P: Trying to force us to use the "
4597                            "requested channel (%u MHz)", freq);
4598                 *force_freq = freq;
4599                 goto exit_ok;
4600         }
4601
4602         for (i = 0; i < num; i++) {
4603                 if (!p2p_supported_freq(wpa_s->global->p2p, freqs[i]))
4604                         continue;
4605
4606                 if (*pref_freq == 0 && num < wpa_s->num_multichan_concurrent) {
4607                         wpa_printf(MSG_DEBUG, "P2P: Try to prefer a frequency (%u MHz) we are already using",
4608                                    freqs[i]);
4609                         *pref_freq = freqs[i];
4610                 } else {
4611                         wpa_printf(MSG_DEBUG, "P2P: Try to force us to use frequency (%u MHz) which is already in use",
4612                                    freqs[i]);
4613                         *force_freq = freqs[i];
4614                 }
4615                 break;
4616         }
4617
4618         if (i == num) {
4619                 if (num < wpa_s->num_multichan_concurrent && num > 0) {
4620                         wpa_printf(MSG_DEBUG, "P2P: Current operating channels are not available for P2P. Try to use another channel");
4621                         *force_freq = 0;
4622                 } else if (num < wpa_s->num_multichan_concurrent) {
4623                         wpa_printf(MSG_DEBUG, "P2P: No current operating channels - try to use a new channel");
4624                         *force_freq = 0;
4625                 } else {
4626                         wpa_printf(MSG_DEBUG, "P2P: All channels are in use and none of them are P2P enabled. Cannot start P2P group");
4627                         res = -2;
4628                         goto exit_free;
4629                 }
4630         }
4631
4632 exit_ok:
4633         res = 0;
4634 exit_free:
4635         os_free(freqs);
4636         return res;
4637 }
4638
4639
4640 /**
4641  * wpas_p2p_connect - Request P2P Group Formation to be started
4642  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4643  * @peer_addr: Address of the peer P2P Device
4644  * @pin: PIN to use during provisioning or %NULL to indicate PBC mode
4645  * @persistent_group: Whether to create a persistent group
4646  * @auto_join: Whether to select join vs. GO Negotiation automatically
4647  * @join: Whether to join an existing group (as a client) instead of starting
4648  *      Group Owner negotiation; @peer_addr is BSSID in that case
4649  * @auth: Whether to only authorize the connection instead of doing that and
4650  *      initiating Group Owner negotiation
4651  * @go_intent: GO Intent or -1 to use default
4652  * @freq: Frequency for the group or 0 for auto-selection
4653  * @persistent_id: Persistent group credentials to use for forcing GO
4654  *      parameters or -1 to generate new values (SSID/passphrase)
4655  * @pd: Whether to send Provision Discovery prior to GO Negotiation as an
4656  *      interoperability workaround when initiating group formation
4657  * @ht40: Start GO with 40 MHz channel width
4658  * @vht:  Start GO with VHT support
4659  * Returns: 0 or new PIN (if pin was %NULL) on success, -1 on unspecified
4660  *      failure, -2 on failure due to channel not currently available,
4661  *      -3 if forced channel is not supported
4662  */
4663 int wpas_p2p_connect(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
4664                      const char *pin, enum p2p_wps_method wps_method,
4665                      int persistent_group, int auto_join, int join, int auth,
4666                      int go_intent, int freq, int persistent_id, int pd,
4667                      int ht40, int vht)
4668 {
4669         int force_freq = 0, pref_freq = 0;
4670         int ret = 0, res;
4671         enum wpa_driver_if_type iftype;
4672         const u8 *if_addr;
4673         struct wpa_ssid *ssid = NULL;
4674
4675         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4676                 return -1;
4677
4678         if (persistent_id >= 0) {
4679                 ssid = wpa_config_get_network(wpa_s->conf, persistent_id);
4680                 if (ssid == NULL || ssid->disabled != 2 ||
4681                     ssid->mode != WPAS_MODE_P2P_GO)
4682                         return -1;
4683         }
4684
4685         os_free(wpa_s->global->add_psk);
4686         wpa_s->global->add_psk = NULL;
4687
4688         wpa_s->global->p2p_fail_on_wps_complete = 0;
4689
4690         if (go_intent < 0)
4691                 go_intent = wpa_s->conf->p2p_go_intent;
4692
4693         if (!auth)
4694                 wpa_s->p2p_long_listen = 0;
4695
4696         wpa_s->p2p_wps_method = wps_method;
4697         wpa_s->p2p_persistent_group = !!persistent_group;
4698         wpa_s->p2p_persistent_id = persistent_id;
4699         wpa_s->p2p_go_intent = go_intent;
4700         wpa_s->p2p_connect_freq = freq;
4701         wpa_s->p2p_fallback_to_go_neg = 0;
4702         wpa_s->p2p_pd_before_go_neg = !!pd;
4703         wpa_s->p2p_go_ht40 = !!ht40;
4704         wpa_s->p2p_go_vht = !!vht;
4705
4706         if (pin)
4707                 os_strlcpy(wpa_s->p2p_pin, pin, sizeof(wpa_s->p2p_pin));
4708         else if (wps_method == WPS_PIN_DISPLAY) {
4709                 ret = wps_generate_pin();
4710                 os_snprintf(wpa_s->p2p_pin, sizeof(wpa_s->p2p_pin), "%08d",
4711                             ret);
4712                 wpa_printf(MSG_DEBUG, "P2P: Randomly generated PIN: %s",
4713                            wpa_s->p2p_pin);
4714         } else
4715                 wpa_s->p2p_pin[0] = '\0';
4716
4717         if (join || auto_join) {
4718                 u8 iface_addr[ETH_ALEN], dev_addr[ETH_ALEN];
4719                 if (auth) {
4720                         wpa_printf(MSG_DEBUG, "P2P: Authorize invitation to "
4721                                    "connect a running group from " MACSTR,
4722                                    MAC2STR(peer_addr));
4723                         os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
4724                         return ret;
4725                 }
4726                 os_memcpy(dev_addr, peer_addr, ETH_ALEN);
4727                 if (p2p_get_interface_addr(wpa_s->global->p2p, peer_addr,
4728                                            iface_addr) < 0) {
4729                         os_memcpy(iface_addr, peer_addr, ETH_ALEN);
4730                         p2p_get_dev_addr(wpa_s->global->p2p, peer_addr,
4731                                          dev_addr);
4732                 }
4733                 if (auto_join) {
4734                         os_get_reltime(&wpa_s->p2p_auto_started);
4735                         wpa_printf(MSG_DEBUG, "P2P: Auto join started at "
4736                                    "%ld.%06ld",
4737                                    wpa_s->p2p_auto_started.sec,
4738                                    wpa_s->p2p_auto_started.usec);
4739                 }
4740                 wpa_s->user_initiated_pd = 1;
4741                 if (wpas_p2p_join(wpa_s, iface_addr, dev_addr, wps_method,
4742                                   auto_join, freq, NULL, 0) < 0)
4743                         return -1;
4744                 return ret;
4745         }
4746
4747         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
4748                                    go_intent == 15);
4749         if (res)
4750                 return res;
4751         wpas_p2p_set_own_freq_preference(wpa_s,
4752                                          force_freq ? force_freq : pref_freq);
4753
4754         wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
4755
4756         if (wpa_s->create_p2p_iface) {
4757                 /* Prepare to add a new interface for the group */
4758                 iftype = WPA_IF_P2P_GROUP;
4759                 if (go_intent == 15)
4760                         iftype = WPA_IF_P2P_GO;
4761                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
4762                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
4763                                    "interface for the group");
4764                         return -1;
4765                 }
4766
4767                 if_addr = wpa_s->pending_interface_addr;
4768         } else
4769                 if_addr = wpa_s->own_addr;
4770
4771         if (auth) {
4772                 if (wpas_p2p_auth_go_neg(wpa_s, peer_addr, wps_method,
4773                                          go_intent, if_addr,
4774                                          force_freq, persistent_group, ssid,
4775                                          pref_freq) < 0)
4776                         return -1;
4777                 return ret;
4778         }
4779
4780         if (wpas_p2p_start_go_neg(wpa_s, peer_addr, wps_method,
4781                                   go_intent, if_addr, force_freq,
4782                                   persistent_group, ssid, pref_freq) < 0) {
4783                 if (wpa_s->create_p2p_iface)
4784                         wpas_p2p_remove_pending_group_interface(wpa_s);
4785                 return -1;
4786         }
4787         return ret;
4788 }
4789
4790
4791 /**
4792  * wpas_p2p_remain_on_channel_cb - Indication of remain-on-channel start
4793  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4794  * @freq: Frequency of the channel in MHz
4795  * @duration: Duration of the stay on the channel in milliseconds
4796  *
4797  * This callback is called when the driver indicates that it has started the
4798  * requested remain-on-channel duration.
4799  */
4800 void wpas_p2p_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4801                                    unsigned int freq, unsigned int duration)
4802 {
4803         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4804                 return;
4805         if (wpa_s->off_channel_freq == wpa_s->pending_listen_freq) {
4806                 p2p_listen_cb(wpa_s->global->p2p, wpa_s->pending_listen_freq,
4807                               wpa_s->pending_listen_duration);
4808                 wpa_s->pending_listen_freq = 0;
4809         } else {
4810                 wpa_printf(MSG_DEBUG, "P2P: Ignore remain-on-channel callback (off_channel_freq=%u pending_listen_freq=%d freq=%u duration=%u)",
4811                            wpa_s->off_channel_freq, wpa_s->pending_listen_freq,
4812                            freq, duration);
4813         }
4814 }
4815
4816
4817 static int wpas_p2p_listen_start(struct wpa_supplicant *wpa_s,
4818                                  unsigned int timeout)
4819 {
4820         /* Limit maximum Listen state time based on driver limitation. */
4821         if (timeout > wpa_s->max_remain_on_chan)
4822                 timeout = wpa_s->max_remain_on_chan;
4823
4824         return p2p_listen(wpa_s->global->p2p, timeout);
4825 }
4826
4827
4828 /**
4829  * wpas_p2p_cancel_remain_on_channel_cb - Remain-on-channel timeout
4830  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4831  * @freq: Frequency of the channel in MHz
4832  *
4833  * This callback is called when the driver indicates that a remain-on-channel
4834  * operation has been completed, i.e., the duration on the requested channel
4835  * has timed out.
4836  */
4837 void wpas_p2p_cancel_remain_on_channel_cb(struct wpa_supplicant *wpa_s,
4838                                           unsigned int freq)
4839 {
4840         wpa_printf(MSG_DEBUG, "P2P: Cancel remain-on-channel callback "
4841                    "(p2p_long_listen=%d ms pending_action_tx=%p)",
4842                    wpa_s->p2p_long_listen, offchannel_pending_action_tx(wpa_s));
4843         wpas_p2p_listen_work_done(wpa_s);
4844         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
4845                 return;
4846         if (p2p_listen_end(wpa_s->global->p2p, freq) > 0)
4847                 return; /* P2P module started a new operation */
4848         if (offchannel_pending_action_tx(wpa_s))
4849                 return;
4850         if (wpa_s->p2p_long_listen > 0)
4851                 wpa_s->p2p_long_listen -= wpa_s->max_remain_on_chan;
4852         if (wpa_s->p2p_long_listen > 0) {
4853                 wpa_printf(MSG_DEBUG, "P2P: Continuing long Listen state");
4854                 wpas_p2p_listen_start(wpa_s, wpa_s->p2p_long_listen);
4855         } else {
4856                 /*
4857                  * When listen duration is over, stop listen & update p2p_state
4858                  * to IDLE.
4859                  */
4860                 p2p_stop_listen(wpa_s->global->p2p);
4861         }
4862 }
4863
4864
4865 /**
4866  * wpas_p2p_group_remove - Remove a P2P group
4867  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
4868  * @ifname: Network interface name of the group interface or "*" to remove all
4869  *      groups
4870  * Returns: 0 on success, -1 on failure
4871  *
4872  * This function is used to remove a P2P group. This can be used to disconnect
4873  * from a group in which the local end is a P2P Client or to end a P2P Group in
4874  * case the local end is the Group Owner. If a virtual network interface was
4875  * created for this group, that interface will be removed. Otherwise, only the
4876  * configured P2P group network will be removed from the interface.
4877  */
4878 int wpas_p2p_group_remove(struct wpa_supplicant *wpa_s, const char *ifname)
4879 {
4880         struct wpa_global *global = wpa_s->global;
4881
4882         if (os_strcmp(ifname, "*") == 0) {
4883                 struct wpa_supplicant *prev;
4884                 wpa_s = global->ifaces;
4885                 while (wpa_s) {
4886                         prev = wpa_s;
4887                         wpa_s = wpa_s->next;
4888                         if (prev->p2p_group_interface !=
4889                             NOT_P2P_GROUP_INTERFACE ||
4890                             (prev->current_ssid &&
4891                              prev->current_ssid->p2p_group))
4892                                 wpas_p2p_disconnect(prev);
4893                 }
4894                 return 0;
4895         }
4896
4897         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
4898                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
4899                         break;
4900         }
4901
4902         return wpas_p2p_disconnect(wpa_s);
4903 }
4904
4905
4906 static int wpas_p2p_select_go_freq(struct wpa_supplicant *wpa_s, int freq)
4907 {
4908         unsigned int r;
4909
4910         if (freq == 2) {
4911                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 2.4 GHz "
4912                            "band");
4913                 if (wpa_s->best_24_freq > 0 &&
4914                     p2p_supported_freq_go(wpa_s->global->p2p,
4915                                           wpa_s->best_24_freq)) {
4916                         freq = wpa_s->best_24_freq;
4917                         wpa_printf(MSG_DEBUG, "P2P: Use best 2.4 GHz band "
4918                                    "channel: %d MHz", freq);
4919                 } else {
4920                         os_get_random((u8 *) &r, sizeof(r));
4921                         freq = 2412 + (r % 3) * 25;
4922                         wpa_printf(MSG_DEBUG, "P2P: Use random 2.4 GHz band "
4923                                    "channel: %d MHz", freq);
4924                 }
4925         }
4926
4927         if (freq == 5) {
4928                 wpa_printf(MSG_DEBUG, "P2P: Request to start GO on 5 GHz "
4929                            "band");
4930                 if (wpa_s->best_5_freq > 0 &&
4931                     p2p_supported_freq_go(wpa_s->global->p2p,
4932                                        wpa_s->best_5_freq)) {
4933                         freq = wpa_s->best_5_freq;
4934                         wpa_printf(MSG_DEBUG, "P2P: Use best 5 GHz band "
4935                                    "channel: %d MHz", freq);
4936                 } else {
4937                         os_get_random((u8 *) &r, sizeof(r));
4938                         freq = 5180 + (r % 4) * 20;
4939                         if (!p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4940                                 wpa_printf(MSG_DEBUG, "P2P: Could not select "
4941                                            "5 GHz channel for P2P group");
4942                                 return -1;
4943                         }
4944                         wpa_printf(MSG_DEBUG, "P2P: Use random 5 GHz band "
4945                                    "channel: %d MHz", freq);
4946                 }
4947         }
4948
4949         if (freq > 0 && !p2p_supported_freq_go(wpa_s->global->p2p, freq)) {
4950                 wpa_printf(MSG_DEBUG, "P2P: The forced channel for GO "
4951                            "(%u MHz) is not supported for P2P uses",
4952                            freq);
4953                 return -1;
4954         }
4955
4956         return freq;
4957 }
4958
4959
4960 static int wpas_p2p_init_go_params(struct wpa_supplicant *wpa_s,
4961                                    struct p2p_go_neg_results *params,
4962                                    int freq, int ht40, int vht,
4963                                    const struct p2p_channels *channels)
4964 {
4965         int res, *freqs;
4966         unsigned int pref_freq;
4967         unsigned int num, i;
4968
4969         os_memset(params, 0, sizeof(*params));
4970         params->role_go = 1;
4971         params->ht40 = ht40;
4972         params->vht = vht;
4973         if (freq) {
4974                 if (!freq_included(channels, freq)) {
4975                         wpa_printf(MSG_DEBUG, "P2P: Forced GO freq %d MHz not "
4976                                    "accepted", freq);
4977                         return -1;
4978                 }
4979                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on forced "
4980                            "frequency %d MHz", freq);
4981                 params->freq = freq;
4982         } else if (wpa_s->conf->p2p_oper_reg_class == 81 &&
4983                    wpa_s->conf->p2p_oper_channel >= 1 &&
4984                    wpa_s->conf->p2p_oper_channel <= 11 &&
4985                    freq_included(channels,
4986                                  2407 + 5 * wpa_s->conf->p2p_oper_channel)) {
4987                 params->freq = 2407 + 5 * wpa_s->conf->p2p_oper_channel;
4988                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
4989                            "frequency %d MHz", params->freq);
4990         } else if ((wpa_s->conf->p2p_oper_reg_class == 115 ||
4991                     wpa_s->conf->p2p_oper_reg_class == 116 ||
4992                     wpa_s->conf->p2p_oper_reg_class == 117 ||
4993                     wpa_s->conf->p2p_oper_reg_class == 124 ||
4994                     wpa_s->conf->p2p_oper_reg_class == 126 ||
4995                     wpa_s->conf->p2p_oper_reg_class == 127) &&
4996                    freq_included(channels,
4997                                  5000 + 5 * wpa_s->conf->p2p_oper_channel)) {
4998                 params->freq = 5000 + 5 * wpa_s->conf->p2p_oper_channel;
4999                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on configured "
5000                            "frequency %d MHz", params->freq);
5001         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5002                    wpa_s->best_overall_freq > 0 &&
5003                    p2p_supported_freq_go(wpa_s->global->p2p,
5004                                          wpa_s->best_overall_freq) &&
5005                    freq_included(channels, wpa_s->best_overall_freq)) {
5006                 params->freq = wpa_s->best_overall_freq;
5007                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best overall "
5008                            "channel %d MHz", params->freq);
5009         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5010                    wpa_s->best_24_freq > 0 &&
5011                    p2p_supported_freq_go(wpa_s->global->p2p,
5012                                          wpa_s->best_24_freq) &&
5013                    freq_included(channels, wpa_s->best_24_freq)) {
5014                 params->freq = wpa_s->best_24_freq;
5015                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 2.4 GHz "
5016                            "channel %d MHz", params->freq);
5017         } else if (wpa_s->conf->p2p_oper_channel == 0 &&
5018                    wpa_s->best_5_freq > 0 &&
5019                    p2p_supported_freq_go(wpa_s->global->p2p,
5020                                          wpa_s->best_5_freq) &&
5021                    freq_included(channels, wpa_s->best_5_freq)) {
5022                 params->freq = wpa_s->best_5_freq;
5023                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq based on best 5 GHz "
5024                            "channel %d MHz", params->freq);
5025         } else if ((pref_freq = p2p_get_pref_freq(wpa_s->global->p2p,
5026                                                   channels))) {
5027                 params->freq = pref_freq;
5028                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz from preferred "
5029                            "channels", params->freq);
5030         } else {
5031                 int chan;
5032                 for (chan = 0; chan < 11; chan++) {
5033                         params->freq = 2412 + chan * 5;
5034                         if (!wpas_p2p_disallowed_freq(wpa_s->global,
5035                                                       params->freq) &&
5036                             freq_included(channels, params->freq))
5037                                 break;
5038                 }
5039                 if (chan == 11) {
5040                         wpa_printf(MSG_DEBUG, "P2P: No 2.4 GHz channel "
5041                                    "allowed");
5042                         return -1;
5043                 }
5044                 wpa_printf(MSG_DEBUG, "P2P: Set GO freq %d MHz (no preference "
5045                            "known)", params->freq);
5046         }
5047
5048         freqs = os_calloc(wpa_s->num_multichan_concurrent, sizeof(int));
5049         if (!freqs)
5050                 return -1;
5051
5052         res = wpas_p2p_valid_oper_freqs(wpa_s, freqs,
5053                                         wpa_s->num_multichan_concurrent);
5054         if (res < 0) {
5055                 os_free(freqs);
5056                 return -1;
5057         }
5058         num = res;
5059
5060         for (i = 0; i < num; i++) {
5061                 if (freq && freqs[i] == freq)
5062                         break;
5063                 if (!freq && freq_included(channels, freqs[i])) {
5064                         wpa_printf(MSG_DEBUG, "P2P: Force GO on a channel we are already using (%u MHz)",
5065                                    freqs[i]);
5066                         params->freq = freqs[i];
5067                         break;
5068                 }
5069         }
5070
5071         if (i == num) {
5072                 if (wpas_p2p_num_unused_channels(wpa_s) <= 0) {
5073                         if (freq)
5074                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on freq (%u MHz) as all the channels are in use", freq);
5075                         else
5076                                 wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using");
5077                         os_free(freqs);
5078                         return -1;
5079                 } else if (num == 0) {
5080                         wpa_printf(MSG_DEBUG, "P2P: Use one of the free channels");
5081                 } else {
5082                         wpa_printf(MSG_DEBUG, "P2P: Cannot force GO on any of the channels we are already using. Use one of the free channels");
5083                 }
5084         }
5085
5086         os_free(freqs);
5087         return 0;
5088 }
5089
5090
5091 static struct wpa_supplicant *
5092 wpas_p2p_get_group_iface(struct wpa_supplicant *wpa_s, int addr_allocated,
5093                          int go)
5094 {
5095         struct wpa_supplicant *group_wpa_s;
5096
5097         if (!wpas_p2p_create_iface(wpa_s)) {
5098                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use same interface for group "
5099                         "operations");
5100                 wpa_s->p2p_first_connection_timeout = 0;
5101                 return wpa_s;
5102         }
5103
5104         if (wpas_p2p_add_group_interface(wpa_s, go ? WPA_IF_P2P_GO :
5105                                          WPA_IF_P2P_CLIENT) < 0) {
5106                 wpa_msg_global(wpa_s, MSG_ERROR,
5107                                "P2P: Failed to add group interface");
5108                 return NULL;
5109         }
5110         group_wpa_s = wpas_p2p_init_group_interface(wpa_s, go);
5111         if (group_wpa_s == NULL) {
5112                 wpa_msg_global(wpa_s, MSG_ERROR,
5113                                "P2P: Failed to initialize group interface");
5114                 wpas_p2p_remove_pending_group_interface(wpa_s);
5115                 return NULL;
5116         }
5117
5118         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use separate group interface %s",
5119                 group_wpa_s->ifname);
5120         group_wpa_s->p2p_first_connection_timeout = 0;
5121         return group_wpa_s;
5122 }
5123
5124
5125 /**
5126  * wpas_p2p_group_add - Add a new P2P group with local end as Group Owner
5127  * @wpa_s: Pointer to wpa_supplicant data from wpa_supplicant_add_iface()
5128  * @persistent_group: Whether to create a persistent group
5129  * @freq: Frequency for the group or 0 to indicate no hardcoding
5130  * @ht40: Start GO with 40 MHz channel width
5131  * @vht:  Start GO with VHT support
5132  * Returns: 0 on success, -1 on failure
5133  *
5134  * This function creates a new P2P group with the local end as the Group Owner,
5135  * i.e., without using Group Owner Negotiation.
5136  */
5137 int wpas_p2p_group_add(struct wpa_supplicant *wpa_s, int persistent_group,
5138                        int freq, int ht40, int vht)
5139 {
5140         struct p2p_go_neg_results params;
5141
5142         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5143                 return -1;
5144
5145         os_free(wpa_s->global->add_psk);
5146         wpa_s->global->add_psk = NULL;
5147
5148         /* Make sure we are not running find during connection establishment */
5149         wpa_printf(MSG_DEBUG, "P2P: Stop any on-going P2P FIND");
5150         wpas_p2p_stop_find_oper(wpa_s);
5151
5152         freq = wpas_p2p_select_go_freq(wpa_s, freq);
5153         if (freq < 0)
5154                 return -1;
5155
5156         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, NULL))
5157                 return -1;
5158         if (params.freq &&
5159             !p2p_supported_freq_go(wpa_s->global->p2p, params.freq)) {
5160                 wpa_printf(MSG_DEBUG, "P2P: The selected channel for GO "
5161                            "(%u MHz) is not supported for P2P uses",
5162                            params.freq);
5163                 return -1;
5164         }
5165         p2p_go_params(wpa_s->global->p2p, &params);
5166         params.persistent_group = persistent_group;
5167
5168         wpa_s = wpas_p2p_get_group_iface(wpa_s, 0, 1);
5169         if (wpa_s == NULL)
5170                 return -1;
5171         wpas_start_wps_go(wpa_s, &params, 0);
5172
5173         return 0;
5174 }
5175
5176
5177 static int wpas_start_p2p_client(struct wpa_supplicant *wpa_s,
5178                                  struct wpa_ssid *params, int addr_allocated,
5179                                  int freq)
5180 {
5181         struct wpa_ssid *ssid;
5182
5183         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 0);
5184         if (wpa_s == NULL)
5185                 return -1;
5186         wpa_s->p2p_last_4way_hs_fail = NULL;
5187
5188         wpa_supplicant_ap_deinit(wpa_s);
5189
5190         ssid = wpa_config_add_network(wpa_s->conf);
5191         if (ssid == NULL)
5192                 return -1;
5193         wpa_config_set_network_defaults(ssid);
5194         ssid->temporary = 1;
5195         ssid->proto = WPA_PROTO_RSN;
5196         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
5197         ssid->group_cipher = WPA_CIPHER_CCMP;
5198         ssid->key_mgmt = WPA_KEY_MGMT_PSK;
5199         ssid->ssid = os_malloc(params->ssid_len);
5200         if (ssid->ssid == NULL) {
5201                 wpa_config_remove_network(wpa_s->conf, ssid->id);
5202                 return -1;
5203         }
5204         os_memcpy(ssid->ssid, params->ssid, params->ssid_len);
5205         ssid->ssid_len = params->ssid_len;
5206         ssid->p2p_group = 1;
5207         ssid->export_keys = 1;
5208         if (params->psk_set) {
5209                 os_memcpy(ssid->psk, params->psk, 32);
5210                 ssid->psk_set = 1;
5211         }
5212         if (params->passphrase)
5213                 ssid->passphrase = os_strdup(params->passphrase);
5214
5215         wpa_s->show_group_started = 1;
5216         wpa_s->p2p_in_invitation = 1;
5217         wpa_s->p2p_invite_go_freq = freq;
5218
5219         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5220                              NULL);
5221         eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5222                                wpas_p2p_group_formation_timeout,
5223                                wpa_s->parent, NULL);
5224         wpa_supplicant_select_network(wpa_s, ssid);
5225
5226         return 0;
5227 }
5228
5229
5230 int wpas_p2p_group_add_persistent(struct wpa_supplicant *wpa_s,
5231                                   struct wpa_ssid *ssid, int addr_allocated,
5232                                   int force_freq, int neg_freq, int ht40,
5233                                   int vht, const struct p2p_channels *channels,
5234                                   int connection_timeout)
5235 {
5236         struct p2p_go_neg_results params;
5237         int go = 0, freq;
5238
5239         if (ssid->disabled != 2 || ssid->ssid == NULL)
5240                 return -1;
5241
5242         if (wpas_get_p2p_group(wpa_s, ssid->ssid, ssid->ssid_len, &go) &&
5243             go == (ssid->mode == WPAS_MODE_P2P_GO)) {
5244                 wpa_printf(MSG_DEBUG, "P2P: Requested persistent group is "
5245                            "already running");
5246                 return 0;
5247         }
5248
5249         os_free(wpa_s->global->add_psk);
5250         wpa_s->global->add_psk = NULL;
5251
5252         /* Make sure we are not running find during connection establishment */
5253         wpas_p2p_stop_find_oper(wpa_s);
5254
5255         wpa_s->p2p_fallback_to_go_neg = 0;
5256
5257         if (force_freq > 0) {
5258                 freq = wpas_p2p_select_go_freq(wpa_s, force_freq);
5259                 if (freq < 0)
5260                         return -1;
5261         } else {
5262                 freq = wpas_p2p_select_go_freq(wpa_s, neg_freq);
5263                 if (freq < 0 || (freq > 0 && !freq_included(channels, freq)))
5264                         freq = 0;
5265         }
5266
5267         if (ssid->mode == WPAS_MODE_INFRA)
5268                 return wpas_start_p2p_client(wpa_s, ssid, addr_allocated, freq);
5269
5270         if (ssid->mode != WPAS_MODE_P2P_GO)
5271                 return -1;
5272
5273         if (wpas_p2p_init_go_params(wpa_s, &params, freq, ht40, vht, channels))
5274                 return -1;
5275
5276         params.role_go = 1;
5277         params.psk_set = ssid->psk_set;
5278         if (params.psk_set)
5279                 os_memcpy(params.psk, ssid->psk, sizeof(params.psk));
5280         if (ssid->passphrase) {
5281                 if (os_strlen(ssid->passphrase) >= sizeof(params.passphrase)) {
5282                         wpa_printf(MSG_ERROR, "P2P: Invalid passphrase in "
5283                                    "persistent group");
5284                         return -1;
5285                 }
5286                 os_strlcpy(params.passphrase, ssid->passphrase,
5287                            sizeof(params.passphrase));
5288         }
5289         os_memcpy(params.ssid, ssid->ssid, ssid->ssid_len);
5290         params.ssid_len = ssid->ssid_len;
5291         params.persistent_group = 1;
5292
5293         wpa_s = wpas_p2p_get_group_iface(wpa_s, addr_allocated, 1);
5294         if (wpa_s == NULL)
5295                 return -1;
5296
5297         wpa_s->p2p_first_connection_timeout = connection_timeout;
5298         wpas_start_wps_go(wpa_s, &params, 0);
5299
5300         return 0;
5301 }
5302
5303
5304 static void wpas_p2p_ie_update(void *ctx, struct wpabuf *beacon_ies,
5305                                struct wpabuf *proberesp_ies)
5306 {
5307         struct wpa_supplicant *wpa_s = ctx;
5308         if (wpa_s->ap_iface) {
5309                 struct hostapd_data *hapd = wpa_s->ap_iface->bss[0];
5310                 if (!(hapd->conf->p2p & P2P_GROUP_OWNER)) {
5311                         wpabuf_free(beacon_ies);
5312                         wpabuf_free(proberesp_ies);
5313                         return;
5314                 }
5315                 if (beacon_ies) {
5316                         wpabuf_free(hapd->p2p_beacon_ie);
5317                         hapd->p2p_beacon_ie = beacon_ies;
5318                 }
5319                 wpabuf_free(hapd->p2p_probe_resp_ie);
5320                 hapd->p2p_probe_resp_ie = proberesp_ies;
5321         } else {
5322                 wpabuf_free(beacon_ies);
5323                 wpabuf_free(proberesp_ies);
5324         }
5325         wpa_supplicant_ap_update_beacon(wpa_s);
5326 }
5327
5328
5329 static void wpas_p2p_idle_update(void *ctx, int idle)
5330 {
5331         struct wpa_supplicant *wpa_s = ctx;
5332         if (!wpa_s->ap_iface)
5333                 return;
5334         wpa_printf(MSG_DEBUG, "P2P: GO - group %sidle", idle ? "" : "not ");
5335         if (idle) {
5336                 if (wpa_s->global->p2p_fail_on_wps_complete &&
5337                     wpa_s->p2p_in_provisioning) {
5338                         wpas_p2p_grpform_fail_after_wps(wpa_s);
5339                         return;
5340                 }
5341                 wpas_p2p_set_group_idle_timeout(wpa_s);
5342         } else
5343                 eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL);
5344 }
5345
5346
5347 struct p2p_group * wpas_p2p_group_init(struct wpa_supplicant *wpa_s,
5348                                        struct wpa_ssid *ssid)
5349 {
5350         struct p2p_group *group;
5351         struct p2p_group_config *cfg;
5352
5353         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5354                 return NULL;
5355
5356         cfg = os_zalloc(sizeof(*cfg));
5357         if (cfg == NULL)
5358                 return NULL;
5359
5360         if (ssid->p2p_persistent_group && wpa_s->conf->persistent_reconnect)
5361                 cfg->persistent_group = 2;
5362         else if (ssid->p2p_persistent_group)
5363                 cfg->persistent_group = 1;
5364         os_memcpy(cfg->interface_addr, wpa_s->own_addr, ETH_ALEN);
5365         if (wpa_s->max_stations &&
5366             wpa_s->max_stations < wpa_s->conf->max_num_sta)
5367                 cfg->max_clients = wpa_s->max_stations;
5368         else
5369                 cfg->max_clients = wpa_s->conf->max_num_sta;
5370         os_memcpy(cfg->ssid, ssid->ssid, ssid->ssid_len);
5371         cfg->ssid_len = ssid->ssid_len;
5372         cfg->freq = ssid->frequency;
5373         cfg->cb_ctx = wpa_s;
5374         cfg->ie_update = wpas_p2p_ie_update;
5375         cfg->idle_update = wpas_p2p_idle_update;
5376
5377         group = p2p_group_init(wpa_s->global->p2p, cfg);
5378         if (group == NULL)
5379                 os_free(cfg);
5380         if (ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION)
5381                 p2p_group_notif_formation_done(group);
5382         wpa_s->p2p_group = group;
5383         return group;
5384 }
5385
5386
5387 void wpas_p2p_wps_success(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5388                           int registrar)
5389 {
5390         struct wpa_ssid *ssid = wpa_s->current_ssid;
5391
5392         if (!wpa_s->p2p_in_provisioning) {
5393                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS success event - P2P "
5394                            "provisioning not in progress");
5395                 return;
5396         }
5397
5398         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5399                 u8 go_dev_addr[ETH_ALEN];
5400                 os_memcpy(go_dev_addr, wpa_s->bssid, ETH_ALEN);
5401                 wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5402                                           ssid->ssid_len);
5403                 /* Clear any stored provisioning info */
5404                 p2p_clear_provisioning_info(wpa_s->global->p2p, go_dev_addr);
5405         }
5406
5407         eloop_cancel_timeout(wpas_p2p_group_formation_timeout, wpa_s->parent,
5408                              NULL);
5409         wpa_s->p2p_go_group_formation_completed = 1;
5410         if (ssid && ssid->mode == WPAS_MODE_INFRA) {
5411                 /*
5412                  * Use a separate timeout for initial data connection to
5413                  * complete to allow the group to be removed automatically if
5414                  * something goes wrong in this step before the P2P group idle
5415                  * timeout mechanism is taken into use.
5416                  */
5417                 wpa_dbg(wpa_s, MSG_DEBUG,
5418                         "P2P: Re-start group formation timeout (%d seconds) as client for initial connection",
5419                         P2P_MAX_INITIAL_CONN_WAIT);
5420                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT, 0,
5421                                        wpas_p2p_group_formation_timeout,
5422                                        wpa_s->parent, NULL);
5423         } else if (ssid) {
5424                 /*
5425                  * Use a separate timeout for initial data connection to
5426                  * complete to allow the group to be removed automatically if
5427                  * the client does not complete data connection successfully.
5428                  */
5429                 wpa_dbg(wpa_s, MSG_DEBUG,
5430                         "P2P: Re-start group formation timeout (%d seconds) as GO for initial connection",
5431                         P2P_MAX_INITIAL_CONN_WAIT_GO);
5432                 eloop_register_timeout(P2P_MAX_INITIAL_CONN_WAIT_GO, 0,
5433                                        wpas_p2p_group_formation_timeout,
5434                                        wpa_s->parent, NULL);
5435                 /*
5436                  * Complete group formation on first successful data connection
5437                  */
5438                 wpa_s->p2p_go_group_formation_completed = 0;
5439         }
5440         if (wpa_s->global->p2p)
5441                 p2p_wps_success_cb(wpa_s->global->p2p, peer_addr);
5442         wpas_group_formation_completed(wpa_s, 1);
5443 }
5444
5445
5446 void wpas_p2p_wps_failed(struct wpa_supplicant *wpa_s,
5447                          struct wps_event_fail *fail)
5448 {
5449         if (!wpa_s->p2p_in_provisioning) {
5450                 wpa_printf(MSG_DEBUG, "P2P: Ignore WPS fail event - P2P "
5451                            "provisioning not in progress");
5452                 return;
5453         }
5454
5455         if (wpa_s->go_params) {
5456                 p2p_clear_provisioning_info(
5457                         wpa_s->global->p2p,
5458                         wpa_s->go_params->peer_device_addr);
5459         }
5460
5461         wpas_notify_p2p_wps_failed(wpa_s, fail);
5462
5463         if (wpa_s == wpa_s->global->p2p_group_formation) {
5464                 /*
5465                  * Allow some time for the failed WPS negotiation exchange to
5466                  * complete, but remove the group since group formation cannot
5467                  * succeed after provisioning failure.
5468                  */
5469                 wpa_printf(MSG_DEBUG, "P2P: WPS step failed during group formation - reject connection from timeout");
5470                 wpa_s->global->p2p_fail_on_wps_complete = 1;
5471                 eloop_deplete_timeout(0, 50000,
5472                                       wpas_p2p_group_formation_timeout,
5473                                       wpa_s->parent, NULL);
5474         }
5475 }
5476
5477
5478 int wpas_p2p_wps_eapol_cb(struct wpa_supplicant *wpa_s)
5479 {
5480         if (!wpa_s->global->p2p_fail_on_wps_complete ||
5481             !wpa_s->p2p_in_provisioning)
5482                 return 0;
5483
5484         wpas_p2p_grpform_fail_after_wps(wpa_s);
5485
5486         return 1;
5487 }
5488
5489
5490 int wpas_p2p_prov_disc(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5491                        const char *config_method,
5492                        enum wpas_p2p_prov_disc_use use)
5493 {
5494         u16 config_methods;
5495
5496         wpa_s->p2p_fallback_to_go_neg = 0;
5497         wpa_s->pending_pd_use = NORMAL_PD;
5498         if (os_strncmp(config_method, "display", 7) == 0)
5499                 config_methods = WPS_CONFIG_DISPLAY;
5500         else if (os_strncmp(config_method, "keypad", 6) == 0)
5501                 config_methods = WPS_CONFIG_KEYPAD;
5502         else if (os_strncmp(config_method, "pbc", 3) == 0 ||
5503                  os_strncmp(config_method, "pushbutton", 10) == 0)
5504                 config_methods = WPS_CONFIG_PUSHBUTTON;
5505         else {
5506                 wpa_printf(MSG_DEBUG, "P2P: Unknown config method");
5507                 return -1;
5508         }
5509
5510         if (use == WPAS_P2P_PD_AUTO) {
5511                 os_memcpy(wpa_s->pending_join_dev_addr, peer_addr, ETH_ALEN);
5512                 wpa_s->pending_pd_config_methods = config_methods;
5513                 wpa_s->p2p_auto_pd = 1;
5514                 wpa_s->p2p_auto_join = 0;
5515                 wpa_s->pending_pd_before_join = 0;
5516                 wpa_s->auto_pd_scan_retry = 0;
5517                 wpas_p2p_stop_find(wpa_s);
5518                 wpa_s->p2p_join_scan_count = 0;
5519                 os_get_reltime(&wpa_s->p2p_auto_started);
5520                 wpa_printf(MSG_DEBUG, "P2P: Auto PD started at %ld.%06ld",
5521                            wpa_s->p2p_auto_started.sec,
5522                            wpa_s->p2p_auto_started.usec);
5523                 wpas_p2p_join_scan(wpa_s, NULL);
5524                 return 0;
5525         }
5526
5527         if (wpa_s->global->p2p == NULL || wpa_s->global->p2p_disabled)
5528                 return -1;
5529
5530         return p2p_prov_disc_req(wpa_s->global->p2p, peer_addr,
5531                                  config_methods, use == WPAS_P2P_PD_FOR_JOIN,
5532                                  0, 1);
5533 }
5534
5535
5536 int wpas_p2p_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
5537                               char *end)
5538 {
5539         return p2p_scan_result_text(ies, ies_len, buf, end);
5540 }
5541
5542
5543 static void wpas_p2p_clear_pending_action_tx(struct wpa_supplicant *wpa_s)
5544 {
5545         if (!offchannel_pending_action_tx(wpa_s))
5546                 return;
5547
5548         wpa_printf(MSG_DEBUG, "P2P: Drop pending Action TX due to new "
5549                    "operation request");
5550         offchannel_clear_pending_action_tx(wpa_s);
5551 }
5552
5553
5554 int wpas_p2p_find(struct wpa_supplicant *wpa_s, unsigned int timeout,
5555                   enum p2p_discovery_type type,
5556                   unsigned int num_req_dev_types, const u8 *req_dev_types,
5557                   const u8 *dev_id, unsigned int search_delay)
5558 {
5559         wpas_p2p_clear_pending_action_tx(wpa_s);
5560         wpa_s->p2p_long_listen = 0;
5561
5562         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL ||
5563             wpa_s->p2p_in_provisioning)
5564                 return -1;
5565
5566         wpa_supplicant_cancel_sched_scan(wpa_s);
5567
5568         return p2p_find(wpa_s->global->p2p, timeout, type,
5569                         num_req_dev_types, req_dev_types, dev_id,
5570                         search_delay);
5571 }
5572
5573
5574 static int wpas_p2p_stop_find_oper(struct wpa_supplicant *wpa_s)
5575 {
5576         wpas_p2p_clear_pending_action_tx(wpa_s);
5577         wpa_s->p2p_long_listen = 0;
5578         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5579         eloop_cancel_timeout(wpas_p2p_join_scan, wpa_s, NULL);
5580
5581         if (wpa_s->global->p2p)
5582                 p2p_stop_find(wpa_s->global->p2p);
5583
5584         return 0;
5585 }
5586
5587
5588 void wpas_p2p_stop_find(struct wpa_supplicant *wpa_s)
5589 {
5590         if (wpas_p2p_stop_find_oper(wpa_s) > 0)
5591                 return;
5592         wpas_p2p_remove_pending_group_interface(wpa_s);
5593 }
5594
5595
5596 static void wpas_p2p_long_listen_timeout(void *eloop_ctx, void *timeout_ctx)
5597 {
5598         struct wpa_supplicant *wpa_s = eloop_ctx;
5599         wpa_s->p2p_long_listen = 0;
5600 }
5601
5602
5603 int wpas_p2p_listen(struct wpa_supplicant *wpa_s, unsigned int timeout)
5604 {
5605         int res;
5606
5607         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5608                 return -1;
5609
5610         wpa_supplicant_cancel_sched_scan(wpa_s);
5611         wpas_p2p_clear_pending_action_tx(wpa_s);
5612
5613         if (timeout == 0) {
5614                 /*
5615                  * This is a request for unlimited Listen state. However, at
5616                  * least for now, this is mapped to a Listen state for one
5617                  * hour.
5618                  */
5619                 timeout = 3600;
5620         }
5621         eloop_cancel_timeout(wpas_p2p_long_listen_timeout, wpa_s, NULL);
5622         wpa_s->p2p_long_listen = 0;
5623
5624         /*
5625          * Stop previous find/listen operation to avoid trying to request a new
5626          * remain-on-channel operation while the driver is still running the
5627          * previous one.
5628          */
5629         if (wpa_s->global->p2p)
5630                 p2p_stop_find(wpa_s->global->p2p);
5631
5632         res = wpas_p2p_listen_start(wpa_s, timeout * 1000);
5633         if (res == 0 && timeout * 1000 > wpa_s->max_remain_on_chan) {
5634                 wpa_s->p2p_long_listen = timeout * 1000;
5635                 eloop_register_timeout(timeout, 0,
5636                                        wpas_p2p_long_listen_timeout,
5637                                        wpa_s, NULL);
5638         }
5639
5640         return res;
5641 }
5642
5643
5644 int wpas_p2p_assoc_req_ie(struct wpa_supplicant *wpa_s, struct wpa_bss *bss,
5645                           u8 *buf, size_t len, int p2p_group)
5646 {
5647         struct wpabuf *p2p_ie;
5648         int ret;
5649
5650         if (wpa_s->global->p2p_disabled)
5651                 return -1;
5652         if (wpa_s->global->p2p == NULL)
5653                 return -1;
5654         if (bss == NULL)
5655                 return -1;
5656
5657         p2p_ie = wpa_bss_get_vendor_ie_multi(bss, P2P_IE_VENDOR_TYPE);
5658         ret = p2p_assoc_req_ie(wpa_s->global->p2p, bss->bssid, buf, len,
5659                                p2p_group, p2p_ie);
5660         wpabuf_free(p2p_ie);
5661
5662         return ret;
5663 }
5664
5665
5666 int wpas_p2p_probe_req_rx(struct wpa_supplicant *wpa_s, const u8 *addr,
5667                           const u8 *dst, const u8 *bssid,
5668                           const u8 *ie, size_t ie_len, int ssi_signal)
5669 {
5670         if (wpa_s->global->p2p_disabled)
5671                 return 0;
5672         if (wpa_s->global->p2p == NULL)
5673                 return 0;
5674
5675         switch (p2p_probe_req_rx(wpa_s->global->p2p, addr, dst, bssid,
5676                                  ie, ie_len)) {
5677         case P2P_PREQ_NOT_P2P:
5678                 wpas_notify_preq(wpa_s, addr, dst, bssid, ie, ie_len,
5679                                  ssi_signal);
5680                 /* fall through */
5681         case P2P_PREQ_MALFORMED:
5682         case P2P_PREQ_NOT_LISTEN:
5683         case P2P_PREQ_NOT_PROCESSED:
5684         default: /* make gcc happy */
5685                 return 0;
5686         case P2P_PREQ_PROCESSED:
5687                 return 1;
5688         }
5689 }
5690
5691
5692 void wpas_p2p_rx_action(struct wpa_supplicant *wpa_s, const u8 *da,
5693                         const u8 *sa, const u8 *bssid,
5694                         u8 category, const u8 *data, size_t len, int freq)
5695 {
5696         if (wpa_s->global->p2p_disabled)
5697                 return;
5698         if (wpa_s->global->p2p == NULL)
5699                 return;
5700
5701         p2p_rx_action(wpa_s->global->p2p, da, sa, bssid, category, data, len,
5702                       freq);
5703 }
5704
5705
5706 void wpas_p2p_scan_ie(struct wpa_supplicant *wpa_s, struct wpabuf *ies)
5707 {
5708         if (wpa_s->global->p2p_disabled)
5709                 return;
5710         if (wpa_s->global->p2p == NULL)
5711                 return;
5712
5713         p2p_scan_ie(wpa_s->global->p2p, ies, NULL);
5714 }
5715
5716
5717 void wpas_p2p_group_deinit(struct wpa_supplicant *wpa_s)
5718 {
5719         p2p_group_deinit(wpa_s->p2p_group);
5720         wpa_s->p2p_group = NULL;
5721
5722         wpa_s->ap_configured_cb = NULL;
5723         wpa_s->ap_configured_cb_ctx = NULL;
5724         wpa_s->ap_configured_cb_data = NULL;
5725         wpa_s->connect_without_scan = NULL;
5726 }
5727
5728
5729 int wpas_p2p_reject(struct wpa_supplicant *wpa_s, const u8 *addr)
5730 {
5731         wpa_s->p2p_long_listen = 0;
5732
5733         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5734                 return -1;
5735
5736         return p2p_reject(wpa_s->global->p2p, addr);
5737 }
5738
5739
5740 /* Invite to reinvoke a persistent group */
5741 int wpas_p2p_invite(struct wpa_supplicant *wpa_s, const u8 *peer_addr,
5742                     struct wpa_ssid *ssid, const u8 *go_dev_addr, int freq,
5743                     int ht40, int vht, int pref_freq)
5744 {
5745         enum p2p_invite_role role;
5746         u8 *bssid = NULL;
5747         int force_freq = 0;
5748         int res;
5749         int no_pref_freq_given = pref_freq == 0;
5750
5751         wpa_s->global->p2p_invite_group = NULL;
5752         if (peer_addr)
5753                 os_memcpy(wpa_s->p2p_auth_invite, peer_addr, ETH_ALEN);
5754         else
5755                 os_memset(wpa_s->p2p_auth_invite, 0, ETH_ALEN);
5756
5757         wpa_s->p2p_persistent_go_freq = freq;
5758         wpa_s->p2p_go_ht40 = !!ht40;
5759         if (ssid->mode == WPAS_MODE_P2P_GO) {
5760                 role = P2P_INVITE_ROLE_GO;
5761                 if (peer_addr == NULL) {
5762                         wpa_printf(MSG_DEBUG, "P2P: Missing peer "
5763                                    "address in invitation command");
5764                         return -1;
5765                 }
5766                 if (wpas_p2p_create_iface(wpa_s)) {
5767                         if (wpas_p2p_add_group_interface(wpa_s,
5768                                                          WPA_IF_P2P_GO) < 0) {
5769                                 wpa_printf(MSG_ERROR, "P2P: Failed to "
5770                                            "allocate a new interface for the "
5771                                            "group");
5772                                 return -1;
5773                         }
5774                         bssid = wpa_s->pending_interface_addr;
5775                 } else
5776                         bssid = wpa_s->own_addr;
5777         } else {
5778                 role = P2P_INVITE_ROLE_CLIENT;
5779                 peer_addr = ssid->bssid;
5780         }
5781         wpa_s->pending_invite_ssid_id = ssid->id;
5782
5783         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5784                                    role == P2P_INVITE_ROLE_GO);
5785         if (res)
5786                 return res;
5787
5788         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5789                 return -1;
5790
5791         if (wpa_s->parent->conf->p2p_ignore_shared_freq &&
5792             no_pref_freq_given && pref_freq > 0 &&
5793             wpa_s->num_multichan_concurrent > 1 &&
5794             wpas_p2p_num_unused_channels(wpa_s) > 0) {
5795                 wpa_printf(MSG_DEBUG, "P2P: Ignore own channel preference %d MHz for invitation due to p2p_ignore_shared_freq=1 configuration",
5796                            pref_freq);
5797                 pref_freq = 0;
5798         }
5799
5800         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5801                           ssid->ssid, ssid->ssid_len, force_freq, go_dev_addr,
5802                           1, pref_freq, -1);
5803 }
5804
5805
5806 /* Invite to join an active group */
5807 int wpas_p2p_invite_group(struct wpa_supplicant *wpa_s, const char *ifname,
5808                           const u8 *peer_addr, const u8 *go_dev_addr)
5809 {
5810         struct wpa_global *global = wpa_s->global;
5811         enum p2p_invite_role role;
5812         u8 *bssid = NULL;
5813         struct wpa_ssid *ssid;
5814         int persistent;
5815         int freq = 0, force_freq = 0, pref_freq = 0;
5816         int res;
5817
5818         wpa_s->p2p_persistent_go_freq = 0;
5819         wpa_s->p2p_go_ht40 = 0;
5820         wpa_s->p2p_go_vht = 0;
5821
5822         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
5823                 if (os_strcmp(wpa_s->ifname, ifname) == 0)
5824                         break;
5825         }
5826         if (wpa_s == NULL) {
5827                 wpa_printf(MSG_DEBUG, "P2P: Interface '%s' not found", ifname);
5828                 return -1;
5829         }
5830
5831         ssid = wpa_s->current_ssid;
5832         if (ssid == NULL) {
5833                 wpa_printf(MSG_DEBUG, "P2P: No current SSID to use for "
5834                            "invitation");
5835                 return -1;
5836         }
5837
5838         wpa_s->global->p2p_invite_group = wpa_s;
5839         persistent = ssid->p2p_persistent_group &&
5840                 wpas_p2p_get_persistent(wpa_s->parent, peer_addr,
5841                                         ssid->ssid, ssid->ssid_len);
5842
5843         if (ssid->mode == WPAS_MODE_P2P_GO) {
5844                 role = P2P_INVITE_ROLE_ACTIVE_GO;
5845                 bssid = wpa_s->own_addr;
5846                 if (go_dev_addr == NULL)
5847                         go_dev_addr = wpa_s->global->p2p_dev_addr;
5848                 freq = ssid->frequency;
5849         } else {
5850                 role = P2P_INVITE_ROLE_CLIENT;
5851                 if (wpa_s->wpa_state < WPA_ASSOCIATED) {
5852                         wpa_printf(MSG_DEBUG, "P2P: Not associated - cannot "
5853                                    "invite to current group");
5854                         return -1;
5855                 }
5856                 bssid = wpa_s->bssid;
5857                 if (go_dev_addr == NULL &&
5858                     !is_zero_ether_addr(wpa_s->go_dev_addr))
5859                         go_dev_addr = wpa_s->go_dev_addr;
5860                 freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5861                         (int) wpa_s->assoc_freq;
5862         }
5863         wpa_s->parent->pending_invite_ssid_id = -1;
5864
5865         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5866                 return -1;
5867
5868         res = wpas_p2p_setup_freqs(wpa_s, freq, &force_freq, &pref_freq,
5869                                    role == P2P_INVITE_ROLE_ACTIVE_GO);
5870         if (res)
5871                 return res;
5872         wpas_p2p_set_own_freq_preference(wpa_s, force_freq);
5873
5874         return p2p_invite(wpa_s->global->p2p, peer_addr, role, bssid,
5875                           ssid->ssid, ssid->ssid_len, force_freq,
5876                           go_dev_addr, persistent, pref_freq, -1);
5877 }
5878
5879
5880 void wpas_p2p_completed(struct wpa_supplicant *wpa_s)
5881 {
5882         struct wpa_ssid *ssid = wpa_s->current_ssid;
5883         const char *ssid_txt;
5884         u8 go_dev_addr[ETH_ALEN];
5885         int network_id = -1;
5886         int persistent;
5887         int freq;
5888         u8 ip[3 * 4];
5889         char ip_addr[100];
5890
5891         if (ssid == NULL || ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION) {
5892                 eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
5893                                      wpa_s->parent, NULL);
5894         }
5895
5896         if (!wpa_s->show_group_started || !ssid)
5897                 return;
5898
5899         wpa_s->show_group_started = 0;
5900
5901         ssid_txt = wpa_ssid_txt(ssid->ssid, ssid->ssid_len);
5902         os_memset(go_dev_addr, 0, ETH_ALEN);
5903         if (ssid->bssid_set)
5904                 os_memcpy(go_dev_addr, ssid->bssid, ETH_ALEN);
5905         persistent = wpas_p2p_persistent_group(wpa_s, go_dev_addr, ssid->ssid,
5906                                                ssid->ssid_len);
5907         os_memcpy(wpa_s->go_dev_addr, go_dev_addr, ETH_ALEN);
5908
5909         if (wpa_s->global->p2p_group_formation == wpa_s)
5910                 wpa_s->global->p2p_group_formation = NULL;
5911
5912         freq = wpa_s->current_bss ? wpa_s->current_bss->freq :
5913                 (int) wpa_s->assoc_freq;
5914
5915         ip_addr[0] = '\0';
5916         if (wpa_sm_get_p2p_ip_addr(wpa_s->wpa, ip) == 0) {
5917                 os_snprintf(ip_addr, sizeof(ip_addr), " ip_addr=%u.%u.%u.%u "
5918                             "ip_mask=%u.%u.%u.%u go_ip_addr=%u.%u.%u.%u",
5919                             ip[0], ip[1], ip[2], ip[3],
5920                             ip[4], ip[5], ip[6], ip[7],
5921                             ip[8], ip[9], ip[10], ip[11]);
5922         }
5923
5924         if (ssid->passphrase == NULL && ssid->psk_set) {
5925                 char psk[65];
5926                 wpa_snprintf_hex(psk, sizeof(psk), ssid->psk, 32);
5927                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5928                                "%s client ssid=\"%s\" freq=%d psk=%s "
5929                                "go_dev_addr=" MACSTR "%s%s",
5930                                wpa_s->ifname, ssid_txt, freq, psk,
5931                                MAC2STR(go_dev_addr),
5932                                persistent ? " [PERSISTENT]" : "", ip_addr);
5933         } else {
5934                 wpa_msg_global(wpa_s->parent, MSG_INFO, P2P_EVENT_GROUP_STARTED
5935                                "%s client ssid=\"%s\" freq=%d "
5936                                "passphrase=\"%s\" go_dev_addr=" MACSTR "%s%s",
5937                                wpa_s->ifname, ssid_txt, freq,
5938                                ssid->passphrase ? ssid->passphrase : "",
5939                                MAC2STR(go_dev_addr),
5940                                persistent ? " [PERSISTENT]" : "", ip_addr);
5941         }
5942
5943         if (persistent)
5944                 network_id = wpas_p2p_store_persistent_group(wpa_s->parent,
5945                                                              ssid, go_dev_addr);
5946         if (network_id < 0)
5947                 network_id = ssid->id;
5948         wpas_notify_p2p_group_started(wpa_s, ssid, network_id, 1);
5949 }
5950
5951
5952 int wpas_p2p_presence_req(struct wpa_supplicant *wpa_s, u32 duration1,
5953                           u32 interval1, u32 duration2, u32 interval2)
5954 {
5955         int ret;
5956
5957         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5958                 return -1;
5959
5960         if (wpa_s->wpa_state < WPA_ASSOCIATED ||
5961             wpa_s->current_ssid == NULL ||
5962             wpa_s->current_ssid->mode != WPAS_MODE_INFRA)
5963                 return -1;
5964
5965         ret = p2p_presence_req(wpa_s->global->p2p, wpa_s->bssid,
5966                                wpa_s->own_addr, wpa_s->assoc_freq,
5967                                duration1, interval1, duration2, interval2);
5968         if (ret == 0)
5969                 wpa_s->waiting_presence_resp = 1;
5970
5971         return ret;
5972 }
5973
5974
5975 int wpas_p2p_ext_listen(struct wpa_supplicant *wpa_s, unsigned int period,
5976                         unsigned int interval)
5977 {
5978         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
5979                 return -1;
5980
5981         return p2p_ext_listen(wpa_s->global->p2p, period, interval);
5982 }
5983
5984
5985 static int wpas_p2p_is_client(struct wpa_supplicant *wpa_s)
5986 {
5987         if (wpa_s->current_ssid == NULL) {
5988                 /*
5989                  * current_ssid can be cleared when P2P client interface gets
5990                  * disconnected, so assume this interface was used as P2P
5991                  * client.
5992                  */
5993                 return 1;
5994         }
5995         return wpa_s->current_ssid->p2p_group &&
5996                 wpa_s->current_ssid->mode == WPAS_MODE_INFRA;
5997 }
5998
5999
6000 static void wpas_p2p_group_idle_timeout(void *eloop_ctx, void *timeout_ctx)
6001 {
6002         struct wpa_supplicant *wpa_s = eloop_ctx;
6003
6004         if (wpa_s->conf->p2p_group_idle == 0 && !wpas_p2p_is_client(wpa_s)) {
6005                 wpa_printf(MSG_DEBUG, "P2P: Ignore group idle timeout - "
6006                            "disabled");
6007                 return;
6008         }
6009
6010         wpa_printf(MSG_DEBUG, "P2P: Group idle timeout reached - terminate "
6011                    "group");
6012         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_IDLE_TIMEOUT);
6013 }
6014
6015
6016 static void wpas_p2p_set_group_idle_timeout(struct wpa_supplicant *wpa_s)
6017 {
6018         int timeout;
6019
6020         if (eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6021                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6022
6023         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6024                 return;
6025
6026         timeout = wpa_s->conf->p2p_group_idle;
6027         if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA &&
6028             (timeout == 0 || timeout > P2P_MAX_CLIENT_IDLE))
6029             timeout = P2P_MAX_CLIENT_IDLE;
6030
6031         if (timeout == 0)
6032                 return;
6033
6034         if (timeout < 0) {
6035                 if (wpa_s->current_ssid->mode == WPAS_MODE_INFRA)
6036                         timeout = 0; /* special client mode no-timeout */
6037                 else
6038                         return;
6039         }
6040
6041         if (wpa_s->p2p_in_provisioning) {
6042                 /*
6043                  * Use the normal group formation timeout during the
6044                  * provisioning phase to avoid terminating this process too
6045                  * early due to group idle timeout.
6046                  */
6047                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6048                            "during provisioning");
6049                 return;
6050         }
6051
6052         if (wpa_s->show_group_started) {
6053                 /*
6054                  * Use the normal group formation timeout between the end of
6055                  * the provisioning phase and completion of 4-way handshake to
6056                  * avoid terminating this process too early due to group idle
6057                  * timeout.
6058                  */
6059                 wpa_printf(MSG_DEBUG, "P2P: Do not use P2P group idle timeout "
6060                            "while waiting for initial 4-way handshake to "
6061                            "complete");
6062                 return;
6063         }
6064
6065         wpa_printf(MSG_DEBUG, "P2P: Set P2P group idle timeout to %u seconds",
6066                    timeout);
6067         eloop_register_timeout(timeout, 0, wpas_p2p_group_idle_timeout,
6068                                wpa_s, NULL);
6069 }
6070
6071
6072 /* Returns 1 if the interface was removed */
6073 int wpas_p2p_deauth_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6074                           u16 reason_code, const u8 *ie, size_t ie_len,
6075                           int locally_generated)
6076 {
6077         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6078                 return 0;
6079
6080         if (!locally_generated)
6081                 p2p_deauth_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6082                                  ie_len);
6083
6084         if (reason_code == WLAN_REASON_DEAUTH_LEAVING && !locally_generated &&
6085             wpa_s->current_ssid &&
6086             wpa_s->current_ssid->p2p_group &&
6087             wpa_s->current_ssid->mode == WPAS_MODE_INFRA) {
6088                 wpa_printf(MSG_DEBUG, "P2P: GO indicated that the P2P Group "
6089                            "session is ending");
6090                 if (wpas_p2p_group_delete(wpa_s,
6091                                           P2P_GROUP_REMOVAL_GO_ENDING_SESSION)
6092                     > 0)
6093                         return 1;
6094         }
6095
6096         return 0;
6097 }
6098
6099
6100 void wpas_p2p_disassoc_notif(struct wpa_supplicant *wpa_s, const u8 *bssid,
6101                              u16 reason_code, const u8 *ie, size_t ie_len,
6102                              int locally_generated)
6103 {
6104         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6105                 return;
6106
6107         if (!locally_generated)
6108                 p2p_disassoc_notif(wpa_s->global->p2p, bssid, reason_code, ie,
6109                                    ie_len);
6110 }
6111
6112
6113 void wpas_p2p_update_config(struct wpa_supplicant *wpa_s)
6114 {
6115         struct p2p_data *p2p = wpa_s->global->p2p;
6116
6117         if (p2p == NULL)
6118                 return;
6119
6120         if (!(wpa_s->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE))
6121                 return;
6122
6123         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_NAME)
6124                 p2p_set_dev_name(p2p, wpa_s->conf->device_name);
6125
6126         if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE)
6127                 p2p_set_pri_dev_type(p2p, wpa_s->conf->device_type);
6128
6129         if (wpa_s->wps &&
6130             (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS))
6131                 p2p_set_config_methods(p2p, wpa_s->wps->config_methods);
6132
6133         if (wpa_s->wps && (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID))
6134                 p2p_set_uuid(p2p, wpa_s->wps->uuid);
6135
6136         if (wpa_s->conf->changed_parameters & CFG_CHANGED_WPS_STRING) {
6137                 p2p_set_manufacturer(p2p, wpa_s->conf->manufacturer);
6138                 p2p_set_model_name(p2p, wpa_s->conf->model_name);
6139                 p2p_set_model_number(p2p, wpa_s->conf->model_number);
6140                 p2p_set_serial_number(p2p, wpa_s->conf->serial_number);
6141         }
6142
6143         if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE)
6144                 p2p_set_sec_dev_types(p2p,
6145                                       (void *) wpa_s->conf->sec_device_type,
6146                                       wpa_s->conf->num_sec_device_types);
6147
6148         if (wpa_s->conf->changed_parameters & CFG_CHANGED_VENDOR_EXTENSION) {
6149                 int i;
6150                 p2p_remove_wps_vendor_extensions(p2p);
6151                 for (i = 0; i < MAX_WPS_VENDOR_EXT; i++) {
6152                         if (wpa_s->conf->wps_vendor_ext[i] == NULL)
6153                                 continue;
6154                         p2p_add_wps_vendor_extension(
6155                                 p2p, wpa_s->conf->wps_vendor_ext[i]);
6156                 }
6157         }
6158
6159         if ((wpa_s->conf->changed_parameters & CFG_CHANGED_COUNTRY) &&
6160             wpa_s->conf->country[0] && wpa_s->conf->country[1]) {
6161                 char country[3];
6162                 country[0] = wpa_s->conf->country[0];
6163                 country[1] = wpa_s->conf->country[1];
6164                 country[2] = 0x04;
6165                 p2p_set_country(p2p, country);
6166         }
6167
6168         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_SSID_POSTFIX) {
6169                 p2p_set_ssid_postfix(p2p, (u8 *) wpa_s->conf->p2p_ssid_postfix,
6170                                      wpa_s->conf->p2p_ssid_postfix ?
6171                                      os_strlen(wpa_s->conf->p2p_ssid_postfix) :
6172                                      0);
6173         }
6174
6175         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_INTRA_BSS)
6176                 p2p_set_intra_bss_dist(p2p, wpa_s->conf->p2p_intra_bss);
6177
6178         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_LISTEN_CHANNEL) {
6179                 u8 reg_class, channel;
6180                 int ret;
6181                 unsigned int r;
6182                 if (wpa_s->conf->p2p_listen_reg_class &&
6183                     wpa_s->conf->p2p_listen_channel) {
6184                         reg_class = wpa_s->conf->p2p_listen_reg_class;
6185                         channel = wpa_s->conf->p2p_listen_channel;
6186                 } else {
6187                         reg_class = 81;
6188                         /*
6189                          * Pick one of the social channels randomly as the
6190                          * listen channel.
6191                          */
6192                         os_get_random((u8 *) &r, sizeof(r));
6193                         channel = 1 + (r % 3) * 5;
6194                 }
6195                 ret = p2p_set_listen_channel(p2p, reg_class, channel);
6196                 if (ret)
6197                         wpa_printf(MSG_ERROR, "P2P: Own listen channel update "
6198                                    "failed: %d", ret);
6199         }
6200         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_OPER_CHANNEL) {
6201                 u8 op_reg_class, op_channel, cfg_op_channel;
6202                 int ret = 0;
6203                 unsigned int r;
6204                 if (wpa_s->conf->p2p_oper_reg_class &&
6205                     wpa_s->conf->p2p_oper_channel) {
6206                         op_reg_class = wpa_s->conf->p2p_oper_reg_class;
6207                         op_channel = wpa_s->conf->p2p_oper_channel;
6208                         cfg_op_channel = 1;
6209                 } else {
6210                         op_reg_class = 81;
6211                         /*
6212                          * Use random operation channel from (1, 6, 11)
6213                          *if no other preference is indicated.
6214                          */
6215                         os_get_random((u8 *) &r, sizeof(r));
6216                         op_channel = 1 + (r % 3) * 5;
6217                         cfg_op_channel = 0;
6218                 }
6219                 ret = p2p_set_oper_channel(p2p, op_reg_class, op_channel,
6220                                            cfg_op_channel);
6221                 if (ret)
6222                         wpa_printf(MSG_ERROR, "P2P: Own oper channel update "
6223                                    "failed: %d", ret);
6224         }
6225
6226         if (wpa_s->conf->changed_parameters & CFG_CHANGED_P2P_PREF_CHAN) {
6227                 if (p2p_set_pref_chan(p2p, wpa_s->conf->num_p2p_pref_chan,
6228                                       wpa_s->conf->p2p_pref_chan) < 0) {
6229                         wpa_printf(MSG_ERROR, "P2P: Preferred channel list "
6230                                    "update failed");
6231                 }
6232
6233                 if (p2p_set_no_go_freq(p2p, &wpa_s->conf->p2p_no_go_freq) < 0) {
6234                         wpa_printf(MSG_ERROR, "P2P: No GO channel list "
6235                                    "update failed");
6236                 }
6237         }
6238 }
6239
6240
6241 int wpas_p2p_set_noa(struct wpa_supplicant *wpa_s, u8 count, int start,
6242                      int duration)
6243 {
6244         if (!wpa_s->ap_iface)
6245                 return -1;
6246         return hostapd_p2p_set_noa(wpa_s->ap_iface->bss[0], count, start,
6247                                    duration);
6248 }
6249
6250
6251 int wpas_p2p_set_cross_connect(struct wpa_supplicant *wpa_s, int enabled)
6252 {
6253         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6254                 return -1;
6255
6256         wpa_s->global->cross_connection = enabled;
6257         p2p_set_cross_connect(wpa_s->global->p2p, enabled);
6258
6259         if (!enabled) {
6260                 struct wpa_supplicant *iface;
6261
6262                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
6263                 {
6264                         if (iface->cross_connect_enabled == 0)
6265                                 continue;
6266
6267                         iface->cross_connect_enabled = 0;
6268                         iface->cross_connect_in_use = 0;
6269                         wpa_msg_global(iface->parent, MSG_INFO,
6270                                        P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6271                                        iface->ifname,
6272                                        iface->cross_connect_uplink);
6273                 }
6274         }
6275
6276         return 0;
6277 }
6278
6279
6280 static void wpas_p2p_enable_cross_connect(struct wpa_supplicant *uplink)
6281 {
6282         struct wpa_supplicant *iface;
6283
6284         if (!uplink->global->cross_connection)
6285                 return;
6286
6287         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6288                 if (!iface->cross_connect_enabled)
6289                         continue;
6290                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6291                     0)
6292                         continue;
6293                 if (iface->ap_iface == NULL)
6294                         continue;
6295                 if (iface->cross_connect_in_use)
6296                         continue;
6297
6298                 iface->cross_connect_in_use = 1;
6299                 wpa_msg_global(iface->parent, MSG_INFO,
6300                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6301                                iface->ifname, iface->cross_connect_uplink);
6302         }
6303 }
6304
6305
6306 static void wpas_p2p_disable_cross_connect(struct wpa_supplicant *uplink)
6307 {
6308         struct wpa_supplicant *iface;
6309
6310         for (iface = uplink->global->ifaces; iface; iface = iface->next) {
6311                 if (!iface->cross_connect_enabled)
6312                         continue;
6313                 if (os_strcmp(uplink->ifname, iface->cross_connect_uplink) !=
6314                     0)
6315                         continue;
6316                 if (!iface->cross_connect_in_use)
6317                         continue;
6318
6319                 wpa_msg_global(iface->parent, MSG_INFO,
6320                                P2P_EVENT_CROSS_CONNECT_DISABLE "%s %s",
6321                                iface->ifname, iface->cross_connect_uplink);
6322                 iface->cross_connect_in_use = 0;
6323         }
6324 }
6325
6326
6327 void wpas_p2p_notif_connected(struct wpa_supplicant *wpa_s)
6328 {
6329         if (wpa_s->ap_iface || wpa_s->current_ssid == NULL ||
6330             wpa_s->current_ssid->mode != WPAS_MODE_INFRA ||
6331             wpa_s->cross_connect_disallowed)
6332                 wpas_p2p_disable_cross_connect(wpa_s);
6333         else
6334                 wpas_p2p_enable_cross_connect(wpa_s);
6335         if (!wpa_s->ap_iface &&
6336             eloop_cancel_timeout(wpas_p2p_group_idle_timeout, wpa_s, NULL) > 0)
6337                 wpa_printf(MSG_DEBUG, "P2P: Cancelled P2P group idle timeout");
6338 }
6339
6340
6341 void wpas_p2p_notif_disconnected(struct wpa_supplicant *wpa_s)
6342 {
6343         wpas_p2p_disable_cross_connect(wpa_s);
6344         if (!wpa_s->ap_iface &&
6345             !eloop_is_timeout_registered(wpas_p2p_group_idle_timeout,
6346                                          wpa_s, NULL))
6347                 wpas_p2p_set_group_idle_timeout(wpa_s);
6348 }
6349
6350
6351 static void wpas_p2p_cross_connect_setup(struct wpa_supplicant *wpa_s)
6352 {
6353         struct wpa_supplicant *iface;
6354
6355         if (!wpa_s->global->cross_connection)
6356                 return;
6357
6358         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
6359                 if (iface == wpa_s)
6360                         continue;
6361                 if (iface->drv_flags &
6362                     WPA_DRIVER_FLAGS_P2P_DEDICATED_INTERFACE)
6363                         continue;
6364                 if (iface->drv_flags & WPA_DRIVER_FLAGS_P2P_CAPABLE)
6365                         continue;
6366
6367                 wpa_s->cross_connect_enabled = 1;
6368                 os_strlcpy(wpa_s->cross_connect_uplink, iface->ifname,
6369                            sizeof(wpa_s->cross_connect_uplink));
6370                 wpa_printf(MSG_DEBUG, "P2P: Enable cross connection from "
6371                            "%s to %s whenever uplink is available",
6372                            wpa_s->ifname, wpa_s->cross_connect_uplink);
6373
6374                 if (iface->ap_iface || iface->current_ssid == NULL ||
6375                     iface->current_ssid->mode != WPAS_MODE_INFRA ||
6376                     iface->cross_connect_disallowed ||
6377                     iface->wpa_state != WPA_COMPLETED)
6378                         break;
6379
6380                 wpa_s->cross_connect_in_use = 1;
6381                 wpa_msg_global(wpa_s->parent, MSG_INFO,
6382                                P2P_EVENT_CROSS_CONNECT_ENABLE "%s %s",
6383                                wpa_s->ifname, wpa_s->cross_connect_uplink);
6384                 break;
6385         }
6386 }
6387
6388
6389 int wpas_p2p_notif_pbc_overlap(struct wpa_supplicant *wpa_s)
6390 {
6391         if (wpa_s->p2p_group_interface != P2P_GROUP_INTERFACE_CLIENT &&
6392             !wpa_s->p2p_in_provisioning)
6393                 return 0; /* not P2P client operation */
6394
6395         wpa_printf(MSG_DEBUG, "P2P: Terminate connection due to WPS PBC "
6396                    "session overlap");
6397         if (wpa_s != wpa_s->parent)
6398                 wpa_msg_ctrl(wpa_s->parent, MSG_INFO, WPS_EVENT_OVERLAP);
6399         wpas_p2p_group_formation_failed(wpa_s);
6400         return 1;
6401 }
6402
6403
6404 void wpas_p2p_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx)
6405 {
6406         struct wpa_supplicant *wpa_s = eloop_ctx;
6407         wpas_p2p_notif_pbc_overlap(wpa_s);
6408 }
6409
6410
6411 void wpas_p2p_update_channel_list(struct wpa_supplicant *wpa_s)
6412 {
6413         struct p2p_channels chan, cli_chan;
6414         struct wpa_supplicant *ifs;
6415
6416         if (wpa_s->global == NULL || wpa_s->global->p2p == NULL)
6417                 return;
6418
6419         os_memset(&chan, 0, sizeof(chan));
6420         os_memset(&cli_chan, 0, sizeof(cli_chan));
6421         if (wpas_p2p_setup_channels(wpa_s, &chan, &cli_chan)) {
6422                 wpa_printf(MSG_ERROR, "P2P: Failed to update supported "
6423                            "channel list");
6424                 return;
6425         }
6426
6427         p2p_update_channel_list(wpa_s->global->p2p, &chan, &cli_chan);
6428
6429         for (ifs = wpa_s->global->ifaces; ifs; ifs = ifs->next) {
6430                 int freq;
6431                 if (!ifs->current_ssid ||
6432                     !ifs->current_ssid->p2p_group ||
6433                     (ifs->current_ssid->mode != WPAS_MODE_P2P_GO &&
6434                      ifs->current_ssid->mode != WPAS_MODE_P2P_GROUP_FORMATION))
6435                                 continue;
6436                 freq = ifs->current_ssid->frequency;
6437                 if (freq_included(&chan, freq)) {
6438                         wpa_dbg(ifs, MSG_DEBUG,
6439                                 "P2P GO operating frequency %d MHz in valid range",
6440                                 freq);
6441                         continue;
6442                 }
6443
6444                 wpa_dbg(ifs, MSG_DEBUG,
6445                         "P2P GO operating in invalid frequency %d MHz", freq);
6446                 /* TODO: Consider using CSA or removing the group within
6447                  * wpa_supplicant */
6448                 wpa_msg(ifs, MSG_INFO, P2P_EVENT_REMOVE_AND_REFORM_GROUP);
6449         }
6450 }
6451
6452
6453 static void wpas_p2p_scan_res_ignore(struct wpa_supplicant *wpa_s,
6454                                      struct wpa_scan_results *scan_res)
6455 {
6456         wpa_printf(MSG_DEBUG, "P2P: Ignore scan results");
6457 }
6458
6459
6460 int wpas_p2p_cancel(struct wpa_supplicant *wpa_s)
6461 {
6462         struct wpa_global *global = wpa_s->global;
6463         int found = 0;
6464         const u8 *peer;
6465
6466         if (global->p2p == NULL)
6467                 return -1;
6468
6469         wpa_printf(MSG_DEBUG, "P2P: Request to cancel group formation");
6470
6471         if (wpa_s->pending_interface_name[0] &&
6472             !is_zero_ether_addr(wpa_s->pending_interface_addr))
6473                 found = 1;
6474
6475         peer = p2p_get_go_neg_peer(global->p2p);
6476         if (peer) {
6477                 wpa_printf(MSG_DEBUG, "P2P: Unauthorize pending GO Neg peer "
6478                            MACSTR, MAC2STR(peer));
6479                 p2p_unauthorize(global->p2p, peer);
6480                 found = 1;
6481         }
6482
6483         if (wpa_s->scan_res_handler == wpas_p2p_scan_res_join) {
6484                 wpa_printf(MSG_DEBUG, "P2P: Stop pending scan for join");
6485                 wpa_s->scan_res_handler = wpas_p2p_scan_res_ignore;
6486                 found = 1;
6487         }
6488
6489         if (wpa_s->pending_pd_before_join) {
6490                 wpa_printf(MSG_DEBUG, "P2P: Stop pending PD before join");
6491                 wpa_s->pending_pd_before_join = 0;
6492                 found = 1;
6493         }
6494
6495         wpas_p2p_stop_find(wpa_s);
6496
6497         for (wpa_s = global->ifaces; wpa_s; wpa_s = wpa_s->next) {
6498                 if (wpa_s == global->p2p_group_formation &&
6499                     (wpa_s->p2p_in_provisioning ||
6500                      wpa_s->parent->pending_interface_type ==
6501                      WPA_IF_P2P_CLIENT)) {
6502                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in group "
6503                                    "formation found - cancelling",
6504                                    wpa_s->ifname);
6505                         found = 1;
6506                         eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6507                                              wpa_s->parent, NULL);
6508                         if (wpa_s->p2p_in_provisioning) {
6509                                 wpas_group_formation_completed(wpa_s, 0);
6510                                 break;
6511                         }
6512                         wpas_p2p_group_delete(wpa_s,
6513                                               P2P_GROUP_REMOVAL_REQUESTED);
6514                         break;
6515                 } else if (wpa_s->p2p_in_invitation) {
6516                         wpa_printf(MSG_DEBUG, "P2P: Interface %s in invitation found - cancelling",
6517                                    wpa_s->ifname);
6518                         found = 1;
6519                         wpas_p2p_group_formation_failed(wpa_s);
6520                 }
6521         }
6522
6523         if (!found) {
6524                 wpa_printf(MSG_DEBUG, "P2P: No ongoing group formation found");
6525                 return -1;
6526         }
6527
6528         return 0;
6529 }
6530
6531
6532 void wpas_p2p_interface_unavailable(struct wpa_supplicant *wpa_s)
6533 {
6534         if (wpa_s->current_ssid == NULL || !wpa_s->current_ssid->p2p_group)
6535                 return;
6536
6537         wpa_printf(MSG_DEBUG, "P2P: Remove group due to driver resource not "
6538                    "being available anymore");
6539         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_UNAVAILABLE);
6540 }
6541
6542
6543 void wpas_p2p_update_best_channels(struct wpa_supplicant *wpa_s,
6544                                    int freq_24, int freq_5, int freq_overall)
6545 {
6546         struct p2p_data *p2p = wpa_s->global->p2p;
6547         if (p2p == NULL)
6548                 return;
6549         p2p_set_best_channels(p2p, freq_24, freq_5, freq_overall);
6550 }
6551
6552
6553 int wpas_p2p_unauthorize(struct wpa_supplicant *wpa_s, const char *addr)
6554 {
6555         u8 peer[ETH_ALEN];
6556         struct p2p_data *p2p = wpa_s->global->p2p;
6557
6558         if (p2p == NULL)
6559                 return -1;
6560
6561         if (hwaddr_aton(addr, peer))
6562                 return -1;
6563
6564         return p2p_unauthorize(p2p, peer);
6565 }
6566
6567
6568 /**
6569  * wpas_p2p_disconnect - Disconnect from a P2P Group
6570  * @wpa_s: Pointer to wpa_supplicant data
6571  * Returns: 0 on success, -1 on failure
6572  *
6573  * This can be used to disconnect from a group in which the local end is a P2P
6574  * Client or to end a P2P Group in case the local end is the Group Owner. If a
6575  * virtual network interface was created for this group, that interface will be
6576  * removed. Otherwise, only the configured P2P group network will be removed
6577  * from the interface.
6578  */
6579 int wpas_p2p_disconnect(struct wpa_supplicant *wpa_s)
6580 {
6581
6582         if (wpa_s == NULL)
6583                 return -1;
6584
6585         return wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_REQUESTED) < 0 ?
6586                 -1 : 0;
6587 }
6588
6589
6590 int wpas_p2p_in_progress(struct wpa_supplicant *wpa_s)
6591 {
6592         int ret;
6593
6594         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
6595                 return 0;
6596
6597         ret = p2p_in_progress(wpa_s->global->p2p);
6598         if (ret == 0) {
6599                 /*
6600                  * Check whether there is an ongoing WPS provisioning step (or
6601                  * other parts of group formation) on another interface since
6602                  * p2p_in_progress() does not report this to avoid issues for
6603                  * scans during such provisioning step.
6604                  */
6605                 if (wpa_s->global->p2p_group_formation &&
6606                     wpa_s->global->p2p_group_formation != wpa_s) {
6607                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Another interface (%s) "
6608                                 "in group formation",
6609                                 wpa_s->global->p2p_group_formation->ifname);
6610                         ret = 1;
6611                 }
6612         }
6613
6614         if (!ret && wpa_s->global->p2p_go_wait_client.sec) {
6615                 struct os_reltime now;
6616                 os_get_reltime(&now);
6617                 if (os_reltime_expired(&now, &wpa_s->global->p2p_go_wait_client,
6618                                        P2P_MAX_INITIAL_CONN_WAIT_GO)) {
6619                         /* Wait for the first client has expired */
6620                         wpa_s->global->p2p_go_wait_client.sec = 0;
6621                 } else {
6622                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Waiting for initial client connection during group formation");
6623                         ret = 1;
6624                 }
6625         }
6626
6627         return ret;
6628 }
6629
6630
6631 void wpas_p2p_network_removed(struct wpa_supplicant *wpa_s,
6632                               struct wpa_ssid *ssid)
6633 {
6634         if (wpa_s->p2p_in_provisioning && ssid->p2p_group &&
6635             eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6636                                  wpa_s->parent, NULL) > 0) {
6637                 /**
6638                  * Remove the network by scheduling the group formation
6639                  * timeout to happen immediately. The teardown code
6640                  * needs to be scheduled to run asynch later so that we
6641                  * don't delete data from under ourselves unexpectedly.
6642                  * Calling wpas_p2p_group_formation_timeout directly
6643                  * causes a series of crashes in WPS failure scenarios.
6644                  */
6645                 wpa_printf(MSG_DEBUG, "P2P: Canceled group formation due to "
6646                            "P2P group network getting removed");
6647                 eloop_register_timeout(0, 0, wpas_p2p_group_formation_timeout,
6648                                        wpa_s->parent, NULL);
6649         }
6650 }
6651
6652
6653 struct wpa_ssid * wpas_p2p_get_persistent(struct wpa_supplicant *wpa_s,
6654                                           const u8 *addr, const u8 *ssid,
6655                                           size_t ssid_len)
6656 {
6657         struct wpa_ssid *s;
6658         size_t i;
6659
6660         for (s = wpa_s->conf->ssid; s; s = s->next) {
6661                 if (s->disabled != 2)
6662                         continue;
6663                 if (ssid &&
6664                     (ssid_len != s->ssid_len ||
6665                      os_memcmp(ssid, s->ssid, ssid_len) != 0))
6666                         continue;
6667                 if (addr == NULL) {
6668                         if (s->mode == WPAS_MODE_P2P_GO)
6669                                 return s;
6670                         continue;
6671                 }
6672                 if (os_memcmp(s->bssid, addr, ETH_ALEN) == 0)
6673                         return s; /* peer is GO in the persistent group */
6674                 if (s->mode != WPAS_MODE_P2P_GO || s->p2p_client_list == NULL)
6675                         continue;
6676                 for (i = 0; i < s->num_p2p_clients; i++) {
6677                         if (os_memcmp(s->p2p_client_list + i * ETH_ALEN,
6678                                       addr, ETH_ALEN) == 0)
6679                                 return s; /* peer is P2P client in persistent
6680                                            * group */
6681                 }
6682         }
6683
6684         return NULL;
6685 }
6686
6687
6688 void wpas_p2p_notify_ap_sta_authorized(struct wpa_supplicant *wpa_s,
6689                                        const u8 *addr)
6690 {
6691         if (eloop_cancel_timeout(wpas_p2p_group_formation_timeout,
6692                                  wpa_s->parent, NULL) > 0) {
6693                 /*
6694                  * This can happen if WPS provisioning step is not terminated
6695                  * cleanly (e.g., P2P Client does not send WSC_Done). Since the
6696                  * peer was able to connect, there is no need to time out group
6697                  * formation after this, though. In addition, this is used with
6698                  * the initial connection wait on the GO as a separate formation
6699                  * timeout and as such, expected to be hit after the initial WPS
6700                  * provisioning step.
6701                  */
6702                 wpa_printf(MSG_DEBUG, "P2P: Canceled P2P group formation timeout on data connection");
6703         }
6704         if (!wpa_s->p2p_go_group_formation_completed) {
6705                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Marking group formation completed on GO on first data connection");
6706                 wpa_s->p2p_go_group_formation_completed = 1;
6707                 wpa_s->global->p2p_group_formation = NULL;
6708                 wpa_s->p2p_in_provisioning = 0;
6709                 wpa_s->p2p_in_invitation = 0;
6710         }
6711         wpa_s->global->p2p_go_wait_client.sec = 0;
6712         if (addr == NULL)
6713                 return;
6714         wpas_p2p_add_persistent_group_client(wpa_s, addr);
6715 }
6716
6717
6718 static void wpas_p2p_fallback_to_go_neg(struct wpa_supplicant *wpa_s,
6719                                         int group_added)
6720 {
6721         struct wpa_supplicant *group = wpa_s;
6722         if (wpa_s->global->p2p_group_formation)
6723                 group = wpa_s->global->p2p_group_formation;
6724         wpa_s = wpa_s->parent;
6725         offchannel_send_action_done(wpa_s);
6726         if (group_added)
6727                 wpas_p2p_group_delete(group, P2P_GROUP_REMOVAL_SILENT);
6728         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Fall back to GO Negotiation");
6729         wpas_p2p_connect(wpa_s, wpa_s->pending_join_dev_addr, wpa_s->p2p_pin,
6730                          wpa_s->p2p_wps_method, wpa_s->p2p_persistent_group, 0,
6731                          0, 0, wpa_s->p2p_go_intent, wpa_s->p2p_connect_freq,
6732                          wpa_s->p2p_persistent_id,
6733                          wpa_s->p2p_pd_before_go_neg,
6734                          wpa_s->p2p_go_ht40,
6735                          wpa_s->p2p_go_vht);
6736 }
6737
6738
6739 int wpas_p2p_scan_no_go_seen(struct wpa_supplicant *wpa_s)
6740 {
6741         if (!wpa_s->p2p_fallback_to_go_neg ||
6742             wpa_s->p2p_in_provisioning <= 5)
6743                 return 0;
6744
6745         if (wpas_p2p_peer_go(wpa_s, wpa_s->pending_join_dev_addr) > 0)
6746                 return 0; /* peer operating as a GO */
6747
6748         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: GO not found for p2p_connect-auto - "
6749                 "fallback to GO Negotiation");
6750         wpas_p2p_fallback_to_go_neg(wpa_s, 1);
6751
6752         return 1;
6753 }
6754
6755
6756 unsigned int wpas_p2p_search_delay(struct wpa_supplicant *wpa_s)
6757 {
6758         struct wpa_supplicant *ifs;
6759
6760         if (wpa_s->wpa_state > WPA_SCANNING) {
6761                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search delay due to "
6762                         "concurrent operation",
6763                         wpa_s->conf->p2p_search_delay);
6764                 return wpa_s->conf->p2p_search_delay;
6765         }
6766
6767         dl_list_for_each(ifs, &wpa_s->radio->ifaces, struct wpa_supplicant,
6768                          radio_list) {
6769                 if (ifs != wpa_s && ifs->wpa_state > WPA_SCANNING) {
6770                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Use %u ms search "
6771                                 "delay due to concurrent operation on "
6772                                 "interface %s",
6773                                 wpa_s->conf->p2p_search_delay,
6774                                 ifs->ifname);
6775                         return wpa_s->conf->p2p_search_delay;
6776                 }
6777         }
6778
6779         return 0;
6780 }
6781
6782
6783 static int wpas_p2p_remove_psk_entry(struct wpa_supplicant *wpa_s,
6784                                      struct wpa_ssid *s, const u8 *addr,
6785                                      int iface_addr)
6786 {
6787         struct psk_list_entry *psk, *tmp;
6788         int changed = 0;
6789
6790         dl_list_for_each_safe(psk, tmp, &s->psk_list, struct psk_list_entry,
6791                               list) {
6792                 if ((iface_addr && !psk->p2p &&
6793                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0) ||
6794                     (!iface_addr && psk->p2p &&
6795                      os_memcmp(addr, psk->addr, ETH_ALEN) == 0)) {
6796                         wpa_dbg(wpa_s, MSG_DEBUG,
6797                                 "P2P: Remove persistent group PSK list entry for "
6798                                 MACSTR " p2p=%u",
6799                                 MAC2STR(psk->addr), psk->p2p);
6800                         dl_list_del(&psk->list);
6801                         os_free(psk);
6802                         changed++;
6803                 }
6804         }
6805
6806         return changed;
6807 }
6808
6809
6810 void wpas_p2p_new_psk_cb(struct wpa_supplicant *wpa_s, const u8 *mac_addr,
6811                          const u8 *p2p_dev_addr,
6812                          const u8 *psk, size_t psk_len)
6813 {
6814         struct wpa_ssid *ssid = wpa_s->current_ssid;
6815         struct wpa_ssid *persistent;
6816         struct psk_list_entry *p, *last;
6817
6818         if (psk_len != sizeof(p->psk))
6819                 return;
6820
6821         if (p2p_dev_addr) {
6822                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR
6823                         " p2p_dev_addr=" MACSTR,
6824                         MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
6825                 if (is_zero_ether_addr(p2p_dev_addr))
6826                         p2p_dev_addr = NULL;
6827         } else {
6828                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: New PSK for addr=" MACSTR,
6829                         MAC2STR(mac_addr));
6830         }
6831
6832         if (ssid->mode == WPAS_MODE_P2P_GROUP_FORMATION) {
6833                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: new_psk_cb during group formation");
6834                 /* To be added to persistent group once created */
6835                 if (wpa_s->global->add_psk == NULL) {
6836                         wpa_s->global->add_psk = os_zalloc(sizeof(*p));
6837                         if (wpa_s->global->add_psk == NULL)
6838                                 return;
6839                 }
6840                 p = wpa_s->global->add_psk;
6841                 if (p2p_dev_addr) {
6842                         p->p2p = 1;
6843                         os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6844                 } else {
6845                         p->p2p = 0;
6846                         os_memcpy(p->addr, mac_addr, ETH_ALEN);
6847                 }
6848                 os_memcpy(p->psk, psk, psk_len);
6849                 return;
6850         }
6851
6852         if (ssid->mode != WPAS_MODE_P2P_GO || !ssid->p2p_persistent_group) {
6853                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Ignore new_psk_cb on not-persistent GO");
6854                 return;
6855         }
6856
6857         persistent = wpas_p2p_get_persistent(wpa_s->parent, NULL, ssid->ssid,
6858                                              ssid->ssid_len);
6859         if (!persistent) {
6860                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not find persistent group information to store the new PSK");
6861                 return;
6862         }
6863
6864         p = os_zalloc(sizeof(*p));
6865         if (p == NULL)
6866                 return;
6867         if (p2p_dev_addr) {
6868                 p->p2p = 1;
6869                 os_memcpy(p->addr, p2p_dev_addr, ETH_ALEN);
6870         } else {
6871                 p->p2p = 0;
6872                 os_memcpy(p->addr, mac_addr, ETH_ALEN);
6873         }
6874         os_memcpy(p->psk, psk, psk_len);
6875
6876         if (dl_list_len(&persistent->psk_list) > P2P_MAX_STORED_CLIENTS &&
6877             (last = dl_list_last(&persistent->psk_list,
6878                                  struct psk_list_entry, list))) {
6879                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove oldest PSK entry for "
6880                         MACSTR " (p2p=%u) to make room for a new one",
6881                         MAC2STR(last->addr), last->p2p);
6882                 dl_list_del(&last->list);
6883                 os_free(last);
6884         }
6885
6886         wpas_p2p_remove_psk_entry(wpa_s->parent, persistent,
6887                                   p2p_dev_addr ? p2p_dev_addr : mac_addr,
6888                                   p2p_dev_addr == NULL);
6889         if (p2p_dev_addr) {
6890                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for p2p_dev_addr="
6891                         MACSTR, MAC2STR(p2p_dev_addr));
6892         } else {
6893                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Add new PSK for addr=" MACSTR,
6894                         MAC2STR(mac_addr));
6895         }
6896         dl_list_add(&persistent->psk_list, &p->list);
6897
6898         if (wpa_s->parent->conf->update_config &&
6899             wpa_config_write(wpa_s->parent->confname, wpa_s->parent->conf))
6900                 wpa_printf(MSG_DEBUG, "P2P: Failed to update configuration");
6901 }
6902
6903
6904 static void wpas_p2p_remove_psk(struct wpa_supplicant *wpa_s,
6905                                 struct wpa_ssid *s, const u8 *addr,
6906                                 int iface_addr)
6907 {
6908         int res;
6909
6910         res = wpas_p2p_remove_psk_entry(wpa_s, s, addr, iface_addr);
6911         if (res > 0 && wpa_s->conf->update_config &&
6912             wpa_config_write(wpa_s->confname, wpa_s->conf))
6913                 wpa_dbg(wpa_s, MSG_DEBUG,
6914                         "P2P: Failed to update configuration");
6915 }
6916
6917
6918 static void wpas_p2p_remove_client_go(struct wpa_supplicant *wpa_s,
6919                                       const u8 *peer, int iface_addr)
6920 {
6921         struct hostapd_data *hapd;
6922         struct hostapd_wpa_psk *psk, *prev, *rem;
6923         struct sta_info *sta;
6924
6925         if (wpa_s->ap_iface == NULL || wpa_s->current_ssid == NULL ||
6926             wpa_s->current_ssid->mode != WPAS_MODE_P2P_GO)
6927                 return;
6928
6929         /* Remove per-station PSK entry */
6930         hapd = wpa_s->ap_iface->bss[0];
6931         prev = NULL;
6932         psk = hapd->conf->ssid.wpa_psk;
6933         while (psk) {
6934                 if ((iface_addr && os_memcmp(peer, psk->addr, ETH_ALEN) == 0) ||
6935                     (!iface_addr &&
6936                      os_memcmp(peer, psk->p2p_dev_addr, ETH_ALEN) == 0)) {
6937                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove operating group PSK entry for "
6938                                 MACSTR " iface_addr=%d",
6939                                 MAC2STR(peer), iface_addr);
6940                         if (prev)
6941                                 prev->next = psk->next;
6942                         else
6943                                 hapd->conf->ssid.wpa_psk = psk->next;
6944                         rem = psk;
6945                         psk = psk->next;
6946                         os_free(rem);
6947                 } else {
6948                         prev = psk;
6949                         psk = psk->next;
6950                 }
6951         }
6952
6953         /* Disconnect from group */
6954         if (iface_addr)
6955                 sta = ap_get_sta(hapd, peer);
6956         else
6957                 sta = ap_get_sta_p2p(hapd, peer);
6958         if (sta) {
6959                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Disconnect peer " MACSTR
6960                         " (iface_addr=%d) from group",
6961                         MAC2STR(peer), iface_addr);
6962                 hostapd_drv_sta_deauth(hapd, sta->addr,
6963                                        WLAN_REASON_DEAUTH_LEAVING);
6964                 ap_sta_deauthenticate(hapd, sta, WLAN_REASON_DEAUTH_LEAVING);
6965         }
6966 }
6967
6968
6969 void wpas_p2p_remove_client(struct wpa_supplicant *wpa_s, const u8 *peer,
6970                             int iface_addr)
6971 {
6972         struct wpa_ssid *s;
6973         struct wpa_supplicant *w;
6974
6975         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Remove client " MACSTR, MAC2STR(peer));
6976
6977         /* Remove from any persistent group */
6978         for (s = wpa_s->parent->conf->ssid; s; s = s->next) {
6979                 if (s->disabled != 2 || s->mode != WPAS_MODE_P2P_GO)
6980                         continue;
6981                 if (!iface_addr)
6982                         wpas_remove_persistent_peer(wpa_s, s, peer, 0);
6983                 wpas_p2p_remove_psk(wpa_s->parent, s, peer, iface_addr);
6984         }
6985
6986         /* Remove from any operating group */
6987         for (w = wpa_s->global->ifaces; w; w = w->next)
6988                 wpas_p2p_remove_client_go(w, peer, iface_addr);
6989 }
6990
6991
6992 static void wpas_p2p_psk_failure_removal(void *eloop_ctx, void *timeout_ctx)
6993 {
6994         struct wpa_supplicant *wpa_s = eloop_ctx;
6995         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_PSK_FAILURE);
6996 }
6997
6998
6999 static void wpas_p2p_group_freq_conflict(void *eloop_ctx, void *timeout_ctx)
7000 {
7001         struct wpa_supplicant *wpa_s = eloop_ctx;
7002
7003         wpa_printf(MSG_DEBUG, "P2P: Frequency conflict - terminate group");
7004         wpas_p2p_group_delete(wpa_s, P2P_GROUP_REMOVAL_FREQ_CONFLICT);
7005 }
7006
7007
7008 int wpas_p2p_handle_frequency_conflicts(struct wpa_supplicant *wpa_s, int freq,
7009                                         struct wpa_ssid *ssid)
7010 {
7011         struct wpa_supplicant *iface;
7012
7013         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7014                 if (!iface->current_ssid ||
7015                     iface->current_ssid->frequency == freq ||
7016                     (iface->p2p_group_interface == NOT_P2P_GROUP_INTERFACE &&
7017                      !iface->current_ssid->p2p_group))
7018                         continue;
7019
7020                 /* Remove the connection with least priority */
7021                 if (!wpas_is_p2p_prioritized(iface)) {
7022                         /* STA connection has priority over existing
7023                          * P2P connection, so remove the interface. */
7024                         wpa_printf(MSG_DEBUG, "P2P: Removing P2P connection due to single channel concurrent mode frequency conflict");
7025                         eloop_register_timeout(0, 0,
7026                                                wpas_p2p_group_freq_conflict,
7027                                                iface, NULL);
7028                         /* If connection in progress is P2P connection, do not
7029                          * proceed for the connection. */
7030                         if (wpa_s == iface)
7031                                 return -1;
7032                         else
7033                                 return 0;
7034                 } else {
7035                         /* P2P connection has priority, disable the STA network
7036                          */
7037                         wpa_supplicant_disable_network(wpa_s->global->ifaces,
7038                                                        ssid);
7039                         wpa_msg(wpa_s->global->ifaces, MSG_INFO,
7040                                 WPA_EVENT_FREQ_CONFLICT " id=%d", ssid->id);
7041                         os_memset(wpa_s->global->ifaces->pending_bssid, 0,
7042                                   ETH_ALEN);
7043                         /* If P2P connection is in progress, continue
7044                          * connecting...*/
7045                         if (wpa_s == iface)
7046                                 return 0;
7047                         else
7048                                 return -1;
7049                 }
7050         }
7051
7052         return 0;
7053 }
7054
7055
7056 int wpas_p2p_4way_hs_failed(struct wpa_supplicant *wpa_s)
7057 {
7058         struct wpa_ssid *ssid = wpa_s->current_ssid;
7059
7060         if (ssid == NULL || !ssid->p2p_group)
7061                 return 0;
7062
7063         if (wpa_s->p2p_last_4way_hs_fail &&
7064             wpa_s->p2p_last_4way_hs_fail == ssid) {
7065                 u8 go_dev_addr[ETH_ALEN];
7066                 struct wpa_ssid *persistent;
7067
7068                 if (wpas_p2p_persistent_group(wpa_s, go_dev_addr,
7069                                               ssid->ssid,
7070                                               ssid->ssid_len) <= 0) {
7071                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Could not determine whether 4-way handshake failures were for a persistent group");
7072                         goto disconnect;
7073                 }
7074
7075                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: Two 4-way handshake failures for a P2P group - go_dev_addr="
7076                         MACSTR, MAC2STR(go_dev_addr));
7077                 persistent = wpas_p2p_get_persistent(wpa_s->parent, go_dev_addr,
7078                                                      ssid->ssid,
7079                                                      ssid->ssid_len);
7080                 if (persistent == NULL || persistent->mode != WPAS_MODE_INFRA) {
7081                         wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No matching persistent group stored");
7082                         goto disconnect;
7083                 }
7084                 wpa_msg_global(wpa_s->parent, MSG_INFO,
7085                                P2P_EVENT_PERSISTENT_PSK_FAIL "%d",
7086                                persistent->id);
7087         disconnect:
7088                 wpa_s->p2p_last_4way_hs_fail = NULL;
7089                 /*
7090                  * Remove the group from a timeout to avoid issues with caller
7091                  * continuing to use the interface if this is on a P2P group
7092                  * interface.
7093                  */
7094                 eloop_register_timeout(0, 0, wpas_p2p_psk_failure_removal,
7095                                        wpa_s, NULL);
7096                 return 1;
7097         }
7098
7099         wpa_s->p2p_last_4way_hs_fail = ssid;
7100         return 0;
7101 }
7102
7103
7104 #ifdef CONFIG_WPS_NFC
7105
7106 static struct wpabuf * wpas_p2p_nfc_handover(int ndef, struct wpabuf *wsc,
7107                                              struct wpabuf *p2p)
7108 {
7109         struct wpabuf *ret;
7110         size_t wsc_len;
7111
7112         if (p2p == NULL) {
7113                 wpabuf_free(wsc);
7114                 wpa_printf(MSG_DEBUG, "P2P: No p2p buffer for handover");
7115                 return NULL;
7116         }
7117
7118         wsc_len = wsc ? wpabuf_len(wsc) : 0;
7119         ret = wpabuf_alloc(2 + wsc_len + 2 + wpabuf_len(p2p));
7120         if (ret == NULL) {
7121                 wpabuf_free(wsc);
7122                 wpabuf_free(p2p);
7123                 return NULL;
7124         }
7125
7126         wpabuf_put_be16(ret, wsc_len);
7127         if (wsc)
7128                 wpabuf_put_buf(ret, wsc);
7129         wpabuf_put_be16(ret, wpabuf_len(p2p));
7130         wpabuf_put_buf(ret, p2p);
7131
7132         wpabuf_free(wsc);
7133         wpabuf_free(p2p);
7134         wpa_hexdump_buf(MSG_DEBUG,
7135                         "P2P: Generated NFC connection handover message", ret);
7136
7137         if (ndef && ret) {
7138                 struct wpabuf *tmp;
7139                 tmp = ndef_build_p2p(ret);
7140                 wpabuf_free(ret);
7141                 if (tmp == NULL) {
7142                         wpa_printf(MSG_DEBUG, "P2P: Failed to NDEF encapsulate handover request");
7143                         return NULL;
7144                 }
7145                 ret = tmp;
7146         }
7147
7148         return ret;
7149 }
7150
7151
7152 static int wpas_p2p_cli_freq(struct wpa_supplicant *wpa_s,
7153                              struct wpa_ssid **ssid, u8 *go_dev_addr)
7154 {
7155         struct wpa_supplicant *iface;
7156
7157         if (go_dev_addr)
7158                 os_memset(go_dev_addr, 0, ETH_ALEN);
7159         if (ssid)
7160                 *ssid = NULL;
7161         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7162                 if (iface->wpa_state < WPA_ASSOCIATING ||
7163                     iface->current_ssid == NULL || iface->assoc_freq == 0 ||
7164                     !iface->current_ssid->p2p_group ||
7165                     iface->current_ssid->mode != WPAS_MODE_INFRA)
7166                         continue;
7167                 if (ssid)
7168                         *ssid = iface->current_ssid;
7169                 if (go_dev_addr)
7170                         os_memcpy(go_dev_addr, iface->go_dev_addr, ETH_ALEN);
7171                 return iface->assoc_freq;
7172         }
7173         return 0;
7174 }
7175
7176
7177 struct wpabuf * wpas_p2p_nfc_handover_req(struct wpa_supplicant *wpa_s,
7178                                           int ndef)
7179 {
7180         struct wpabuf *wsc, *p2p;
7181         struct wpa_ssid *ssid;
7182         u8 go_dev_addr[ETH_ALEN];
7183         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7184
7185         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL) {
7186                 wpa_printf(MSG_DEBUG, "P2P: P2P disabled - cannot build handover request");
7187                 return NULL;
7188         }
7189
7190         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7191             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7192                            &wpa_s->conf->wps_nfc_dh_privkey) < 0) {
7193                 wpa_dbg(wpa_s, MSG_DEBUG, "P2P: No DH key available for handover request");
7194                 return NULL;
7195         }
7196
7197         if (cli_freq == 0) {
7198                 wsc = wps_build_nfc_handover_req_p2p(
7199                         wpa_s->parent->wps, wpa_s->conf->wps_nfc_dh_pubkey);
7200         } else
7201                 wsc = NULL;
7202         p2p = p2p_build_nfc_handover_req(wpa_s->global->p2p, cli_freq,
7203                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7204                                          ssid ? ssid->ssid_len : 0);
7205
7206         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7207 }
7208
7209
7210 struct wpabuf * wpas_p2p_nfc_handover_sel(struct wpa_supplicant *wpa_s,
7211                                           int ndef, int tag)
7212 {
7213         struct wpabuf *wsc, *p2p;
7214         struct wpa_ssid *ssid;
7215         u8 go_dev_addr[ETH_ALEN];
7216         int cli_freq = wpas_p2p_cli_freq(wpa_s, &ssid, go_dev_addr);
7217
7218         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7219                 return NULL;
7220
7221         if (!tag && wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7222             wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7223                            &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7224                 return NULL;
7225
7226         if (cli_freq == 0) {
7227                 wsc = wps_build_nfc_handover_sel_p2p(
7228                         wpa_s->parent->wps,
7229                         tag ? wpa_s->conf->wps_nfc_dev_pw_id :
7230                         DEV_PW_NFC_CONNECTION_HANDOVER,
7231                         wpa_s->conf->wps_nfc_dh_pubkey,
7232                         tag ? wpa_s->conf->wps_nfc_dev_pw : NULL);
7233         } else
7234                 wsc = NULL;
7235         p2p = p2p_build_nfc_handover_sel(wpa_s->global->p2p, cli_freq,
7236                                          go_dev_addr, ssid ? ssid->ssid : NULL,
7237                                          ssid ? ssid->ssid_len : 0);
7238
7239         return wpas_p2p_nfc_handover(ndef, wsc, p2p);
7240 }
7241
7242
7243 static int wpas_p2p_nfc_join_group(struct wpa_supplicant *wpa_s,
7244                                    struct p2p_nfc_params *params)
7245 {
7246         wpa_printf(MSG_DEBUG, "P2P: Initiate join-group based on NFC "
7247                    "connection handover (freq=%d)",
7248                    params->go_freq);
7249
7250         if (params->go_freq && params->go_ssid_len) {
7251                 wpa_s->p2p_wps_method = WPS_NFC;
7252                 wpa_s->pending_join_wps_method = WPS_NFC;
7253                 os_memset(wpa_s->pending_join_iface_addr, 0, ETH_ALEN);
7254                 os_memcpy(wpa_s->pending_join_dev_addr, params->go_dev_addr,
7255                           ETH_ALEN);
7256                 return wpas_p2p_join_start(wpa_s, params->go_freq,
7257                                            params->go_ssid,
7258                                            params->go_ssid_len);
7259         }
7260
7261         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7262                                 WPS_NFC, 0, 0, 1, 0, wpa_s->conf->p2p_go_intent,
7263                                 params->go_freq, -1, 0, 1, 1);
7264 }
7265
7266
7267 static int wpas_p2p_nfc_auth_join(struct wpa_supplicant *wpa_s,
7268                                   struct p2p_nfc_params *params, int tag)
7269 {
7270         int res, persistent;
7271         struct wpa_ssid *ssid;
7272
7273         wpa_printf(MSG_DEBUG, "P2P: Authorize join-group based on NFC "
7274                    "connection handover");
7275         for (wpa_s = wpa_s->global->ifaces; wpa_s; wpa_s = wpa_s->next) {
7276                 ssid = wpa_s->current_ssid;
7277                 if (ssid == NULL)
7278                         continue;
7279                 if (ssid->mode != WPAS_MODE_P2P_GO)
7280                         continue;
7281                 if (wpa_s->ap_iface == NULL)
7282                         continue;
7283                 break;
7284         }
7285         if (wpa_s == NULL) {
7286                 wpa_printf(MSG_DEBUG, "P2P: Could not find GO interface");
7287                 return -1;
7288         }
7289
7290         if (wpa_s->parent->p2p_oob_dev_pw_id !=
7291             DEV_PW_NFC_CONNECTION_HANDOVER &&
7292             !wpa_s->parent->p2p_oob_dev_pw) {
7293                 wpa_printf(MSG_DEBUG, "P2P: No NFC Dev Pw known");
7294                 return -1;
7295         }
7296         res = wpas_ap_wps_add_nfc_pw(
7297                 wpa_s, wpa_s->parent->p2p_oob_dev_pw_id,
7298                 wpa_s->parent->p2p_oob_dev_pw,
7299                 wpa_s->parent->p2p_peer_oob_pk_hash_known ?
7300                 wpa_s->parent->p2p_peer_oob_pubkey_hash : NULL);
7301         if (res)
7302                 return res;
7303
7304         if (!tag) {
7305                 wpa_printf(MSG_DEBUG, "P2P: Negotiated handover - wait for peer to join without invitation");
7306                 return 0;
7307         }
7308
7309         if (!params->peer ||
7310             !(params->peer->dev_capab & P2P_DEV_CAPAB_INVITATION_PROCEDURE))
7311                 return 0;
7312
7313         wpa_printf(MSG_DEBUG, "P2P: Static handover - invite peer " MACSTR
7314                    " to join", MAC2STR(params->peer->p2p_device_addr));
7315
7316         wpa_s->global->p2p_invite_group = wpa_s;
7317         persistent = ssid->p2p_persistent_group &&
7318                 wpas_p2p_get_persistent(wpa_s->parent,
7319                                         params->peer->p2p_device_addr,
7320                                         ssid->ssid, ssid->ssid_len);
7321         wpa_s->parent->pending_invite_ssid_id = -1;
7322
7323         return p2p_invite(wpa_s->global->p2p, params->peer->p2p_device_addr,
7324                           P2P_INVITE_ROLE_ACTIVE_GO, wpa_s->own_addr,
7325                           ssid->ssid, ssid->ssid_len, ssid->frequency,
7326                           wpa_s->global->p2p_dev_addr, persistent, 0,
7327                           wpa_s->parent->p2p_oob_dev_pw_id);
7328 }
7329
7330
7331 static int wpas_p2p_nfc_init_go_neg(struct wpa_supplicant *wpa_s,
7332                                     struct p2p_nfc_params *params,
7333                                     int forced_freq)
7334 {
7335         wpa_printf(MSG_DEBUG, "P2P: Initiate GO Negotiation based on NFC "
7336                    "connection handover");
7337         return wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7338                                 WPS_NFC, 0, 0, 0, 0, wpa_s->conf->p2p_go_intent,
7339                                 forced_freq, -1, 0, 1, 1);
7340 }
7341
7342
7343 static int wpas_p2p_nfc_resp_go_neg(struct wpa_supplicant *wpa_s,
7344                                     struct p2p_nfc_params *params,
7345                                     int forced_freq)
7346 {
7347         int res;
7348
7349         wpa_printf(MSG_DEBUG, "P2P: Authorize GO Negotiation based on NFC "
7350                    "connection handover");
7351         res = wpas_p2p_connect(wpa_s, params->peer->p2p_device_addr, NULL,
7352                                WPS_NFC, 0, 0, 0, 1, wpa_s->conf->p2p_go_intent,
7353                                forced_freq, -1, 0, 1, 1);
7354         if (res)
7355                 return res;
7356
7357         res = wpas_p2p_listen(wpa_s, 60);
7358         if (res) {
7359                 p2p_unauthorize(wpa_s->global->p2p,
7360                                 params->peer->p2p_device_addr);
7361         }
7362
7363         return res;
7364 }
7365
7366
7367 static int wpas_p2p_nfc_connection_handover(struct wpa_supplicant *wpa_s,
7368                                             const struct wpabuf *data,
7369                                             int sel, int tag, int forced_freq)
7370 {
7371         const u8 *pos, *end;
7372         u16 len, id;
7373         struct p2p_nfc_params params;
7374         int res;
7375
7376         os_memset(&params, 0, sizeof(params));
7377         params.sel = sel;
7378
7379         wpa_hexdump_buf(MSG_DEBUG, "P2P: Received NFC tag payload", data);
7380
7381         pos = wpabuf_head(data);
7382         end = pos + wpabuf_len(data);
7383
7384         if (end - pos < 2) {
7385                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of WSC "
7386                            "attributes");
7387                 return -1;
7388         }
7389         len = WPA_GET_BE16(pos);
7390         pos += 2;
7391         if (pos + len > end) {
7392                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for WSC "
7393                            "attributes");
7394                 return -1;
7395         }
7396         params.wsc_attr = pos;
7397         params.wsc_len = len;
7398         pos += len;
7399
7400         if (end - pos < 2) {
7401                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for Length of P2P "
7402                            "attributes");
7403                 return -1;
7404         }
7405         len = WPA_GET_BE16(pos);
7406         pos += 2;
7407         if (pos + len > end) {
7408                 wpa_printf(MSG_DEBUG, "P2P: Not enough data for P2P "
7409                            "attributes");
7410                 return -1;
7411         }
7412         params.p2p_attr = pos;
7413         params.p2p_len = len;
7414         pos += len;
7415
7416         wpa_hexdump(MSG_DEBUG, "P2P: WSC attributes",
7417                     params.wsc_attr, params.wsc_len);
7418         wpa_hexdump(MSG_DEBUG, "P2P: P2P attributes",
7419                     params.p2p_attr, params.p2p_len);
7420         if (pos < end) {
7421                 wpa_hexdump(MSG_DEBUG,
7422                             "P2P: Ignored extra data after P2P attributes",
7423                             pos, end - pos);
7424         }
7425
7426         res = p2p_process_nfc_connection_handover(wpa_s->global->p2p, &params);
7427         if (res)
7428                 return res;
7429
7430         if (params.next_step == NO_ACTION)
7431                 return 0;
7432
7433         if (params.next_step == BOTH_GO) {
7434                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_BOTH_GO "peer=" MACSTR,
7435                         MAC2STR(params.peer->p2p_device_addr));
7436                 return 0;
7437         }
7438
7439         if (params.next_step == PEER_CLIENT) {
7440                 if (!is_zero_ether_addr(params.go_dev_addr)) {
7441                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7442                                 "peer=" MACSTR " freq=%d go_dev_addr=" MACSTR
7443                                 " ssid=\"%s\"",
7444                                 MAC2STR(params.peer->p2p_device_addr),
7445                                 params.go_freq,
7446                                 MAC2STR(params.go_dev_addr),
7447                                 wpa_ssid_txt(params.go_ssid,
7448                                              params.go_ssid_len));
7449                 } else {
7450                         wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_PEER_CLIENT
7451                                 "peer=" MACSTR " freq=%d",
7452                                 MAC2STR(params.peer->p2p_device_addr),
7453                                 params.go_freq);
7454                 }
7455                 return 0;
7456         }
7457
7458         if (wpas_p2p_cli_freq(wpa_s, NULL, NULL)) {
7459                 wpa_msg(wpa_s, MSG_INFO, P2P_EVENT_NFC_WHILE_CLIENT "peer="
7460                         MACSTR, MAC2STR(params.peer->p2p_device_addr));
7461                 return 0;
7462         }
7463
7464         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7465         wpa_s->p2p_oob_dev_pw = NULL;
7466
7467         if (params.oob_dev_pw_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
7468                 wpa_printf(MSG_DEBUG, "P2P: No peer OOB Dev Pw "
7469                            "received");
7470                 return -1;
7471         }
7472
7473         id = WPA_GET_BE16(params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN);
7474         wpa_printf(MSG_DEBUG, "P2P: Peer OOB Dev Pw %u", id);
7475         wpa_hexdump(MSG_DEBUG, "P2P: Peer OOB Public Key hash",
7476                     params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7477         os_memcpy(wpa_s->p2p_peer_oob_pubkey_hash,
7478                   params.oob_dev_pw, WPS_OOB_PUBKEY_HASH_LEN);
7479         wpa_s->p2p_peer_oob_pk_hash_known = 1;
7480
7481         if (tag) {
7482                 if (id < 0x10) {
7483                         wpa_printf(MSG_DEBUG, "P2P: Static handover - invalid "
7484                                    "peer OOB Device Password Id %u", id);
7485                         return -1;
7486                 }
7487                 wpa_printf(MSG_DEBUG, "P2P: Static handover - use peer OOB "
7488                            "Device Password Id %u", id);
7489                 wpa_hexdump_key(MSG_DEBUG, "P2P: Peer OOB Device Password",
7490                                 params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7491                                 params.oob_dev_pw_len -
7492                                 WPS_OOB_PUBKEY_HASH_LEN - 2);
7493                 wpa_s->p2p_oob_dev_pw_id = id;
7494                 wpa_s->p2p_oob_dev_pw = wpabuf_alloc_copy(
7495                         params.oob_dev_pw + WPS_OOB_PUBKEY_HASH_LEN + 2,
7496                         params.oob_dev_pw_len -
7497                         WPS_OOB_PUBKEY_HASH_LEN - 2);
7498                 if (wpa_s->p2p_oob_dev_pw == NULL)
7499                         return -1;
7500
7501                 if (wpa_s->conf->wps_nfc_dh_pubkey == NULL &&
7502                     wps_nfc_gen_dh(&wpa_s->conf->wps_nfc_dh_pubkey,
7503                                    &wpa_s->conf->wps_nfc_dh_privkey) < 0)
7504                         return -1;
7505         } else {
7506                 wpa_printf(MSG_DEBUG, "P2P: Using abbreviated WPS handshake "
7507                            "without Device Password");
7508                 wpa_s->p2p_oob_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
7509         }
7510
7511         switch (params.next_step) {
7512         case NO_ACTION:
7513         case BOTH_GO:
7514         case PEER_CLIENT:
7515                 /* already covered above */
7516                 return 0;
7517         case JOIN_GROUP:
7518                 return wpas_p2p_nfc_join_group(wpa_s, &params);
7519         case AUTH_JOIN:
7520                 return wpas_p2p_nfc_auth_join(wpa_s, &params, tag);
7521         case INIT_GO_NEG:
7522                 return wpas_p2p_nfc_init_go_neg(wpa_s, &params, forced_freq);
7523         case RESP_GO_NEG:
7524                 /* TODO: use own OOB Dev Pw */
7525                 return wpas_p2p_nfc_resp_go_neg(wpa_s, &params, forced_freq);
7526         }
7527
7528         return -1;
7529 }
7530
7531
7532 int wpas_p2p_nfc_tag_process(struct wpa_supplicant *wpa_s,
7533                              const struct wpabuf *data, int forced_freq)
7534 {
7535         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7536                 return -1;
7537
7538         return wpas_p2p_nfc_connection_handover(wpa_s, data, 1, 1, forced_freq);
7539 }
7540
7541
7542 int wpas_p2p_nfc_report_handover(struct wpa_supplicant *wpa_s, int init,
7543                                  const struct wpabuf *req,
7544                                  const struct wpabuf *sel, int forced_freq)
7545 {
7546         struct wpabuf *tmp;
7547         int ret;
7548
7549         if (wpa_s->global->p2p_disabled || wpa_s->global->p2p == NULL)
7550                 return -1;
7551
7552         wpa_printf(MSG_DEBUG, "NFC: P2P connection handover reported");
7553
7554         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Req",
7555                           wpabuf_head(req), wpabuf_len(req));
7556         wpa_hexdump_ascii(MSG_DEBUG, "NFC: Sel",
7557                           wpabuf_head(sel), wpabuf_len(sel));
7558         if (forced_freq)
7559                 wpa_printf(MSG_DEBUG, "NFC: Forced freq %d", forced_freq);
7560         tmp = ndef_parse_p2p(init ? sel : req);
7561         if (tmp == NULL) {
7562                 wpa_printf(MSG_DEBUG, "P2P: Could not parse NDEF");
7563                 return -1;
7564         }
7565
7566         ret = wpas_p2p_nfc_connection_handover(wpa_s, tmp, init, 0,
7567                                                forced_freq);
7568         wpabuf_free(tmp);
7569
7570         return ret;
7571 }
7572
7573
7574 int wpas_p2p_nfc_tag_enabled(struct wpa_supplicant *wpa_s, int enabled)
7575 {
7576         const u8 *if_addr;
7577         int go_intent = wpa_s->conf->p2p_go_intent;
7578         struct wpa_supplicant *iface;
7579
7580         if (wpa_s->global->p2p == NULL)
7581                 return -1;
7582
7583         if (!enabled) {
7584                 wpa_printf(MSG_DEBUG, "P2P: Disable use of own NFC Tag");
7585                 for (iface = wpa_s->global->ifaces; iface; iface = iface->next)
7586                 {
7587                         if (!iface->ap_iface)
7588                                 continue;
7589                         hostapd_wps_nfc_token_disable(iface->ap_iface->bss[0]);
7590                 }
7591                 p2p_set_authorized_oob_dev_pw_id(wpa_s->global->p2p, 0,
7592                                                  0, NULL);
7593                 if (wpa_s->p2p_nfc_tag_enabled)
7594                         wpas_p2p_remove_pending_group_interface(wpa_s);
7595                 wpa_s->p2p_nfc_tag_enabled = 0;
7596                 return 0;
7597         }
7598
7599         if (wpa_s->global->p2p_disabled)
7600                 return -1;
7601
7602         if (wpa_s->conf->wps_nfc_dh_pubkey == NULL ||
7603             wpa_s->conf->wps_nfc_dh_privkey == NULL ||
7604             wpa_s->conf->wps_nfc_dev_pw == NULL ||
7605             wpa_s->conf->wps_nfc_dev_pw_id < 0x10) {
7606                 wpa_printf(MSG_DEBUG, "P2P: NFC password token not configured "
7607                            "to allow static handover cases");
7608                 return -1;
7609         }
7610
7611         wpa_printf(MSG_DEBUG, "P2P: Enable use of own NFC Tag");
7612
7613         wpa_s->p2p_oob_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7614         wpabuf_free(wpa_s->p2p_oob_dev_pw);
7615         wpa_s->p2p_oob_dev_pw = wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7616         if (wpa_s->p2p_oob_dev_pw == NULL)
7617                 return -1;
7618         wpa_s->p2p_peer_oob_pk_hash_known = 0;
7619
7620         if (wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_GO ||
7621             wpa_s->p2p_group_interface == P2P_GROUP_INTERFACE_CLIENT) {
7622                 /*
7623                  * P2P Group Interface present and the command came on group
7624                  * interface, so enable the token for the current interface.
7625                  */
7626                 wpa_s->create_p2p_iface = 0;
7627         } else {
7628                 wpa_s->create_p2p_iface = wpas_p2p_create_iface(wpa_s);
7629         }
7630
7631         if (wpa_s->create_p2p_iface) {
7632                 enum wpa_driver_if_type iftype;
7633                 /* Prepare to add a new interface for the group */
7634                 iftype = WPA_IF_P2P_GROUP;
7635                 if (go_intent == 15)
7636                         iftype = WPA_IF_P2P_GO;
7637                 if (wpas_p2p_add_group_interface(wpa_s, iftype) < 0) {
7638                         wpa_printf(MSG_ERROR, "P2P: Failed to allocate a new "
7639                                    "interface for the group");
7640                         return -1;
7641                 }
7642
7643                 if_addr = wpa_s->pending_interface_addr;
7644         } else
7645                 if_addr = wpa_s->own_addr;
7646
7647         wpa_s->p2p_nfc_tag_enabled = enabled;
7648
7649         for (iface = wpa_s->global->ifaces; iface; iface = iface->next) {
7650                 struct hostapd_data *hapd;
7651                 if (iface->ap_iface == NULL)
7652                         continue;
7653                 hapd = iface->ap_iface->bss[0];
7654                 wpabuf_free(hapd->conf->wps_nfc_dh_pubkey);
7655                 hapd->conf->wps_nfc_dh_pubkey =
7656                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_pubkey);
7657                 wpabuf_free(hapd->conf->wps_nfc_dh_privkey);
7658                 hapd->conf->wps_nfc_dh_privkey =
7659                         wpabuf_dup(wpa_s->conf->wps_nfc_dh_privkey);
7660                 wpabuf_free(hapd->conf->wps_nfc_dev_pw);
7661                 hapd->conf->wps_nfc_dev_pw =
7662                         wpabuf_dup(wpa_s->conf->wps_nfc_dev_pw);
7663                 hapd->conf->wps_nfc_dev_pw_id = wpa_s->conf->wps_nfc_dev_pw_id;
7664
7665                 if (hostapd_wps_nfc_token_enable(iface->ap_iface->bss[0]) < 0) {
7666                         wpa_dbg(iface, MSG_DEBUG,
7667                                 "P2P: Failed to enable NFC Tag for GO");
7668                 }
7669         }
7670         p2p_set_authorized_oob_dev_pw_id(
7671                 wpa_s->global->p2p, wpa_s->conf->wps_nfc_dev_pw_id, go_intent,
7672                 if_addr);
7673
7674         return 0;
7675 }
7676
7677 #endif /* CONFIG_WPS_NFC */