src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2016, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "utils/uuid.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "eapol_auth/eapol_auth_sm.h"
  18 #include "eapol_auth/eapol_auth_sm_i.h"
  19 #include "wps/wps.h"
  20 #include "wps/wps_defs.h"
  21 #include "wps/wps_dev_attr.h"
  22 #include "wps/wps_attr_parse.h"
  23 #include "hostapd.h"
  24 #include "ap_config.h"
  25 #include "ap_drv_ops.h"
  26 #include "beacon.h"
  27 #include "sta_info.h"
  28 #include "wps_hostapd.h"
  29
  30
  31 #ifdef CONFIG_WPS_UPNP
  32 #include "wps/wps_upnp.h"
  33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  34                                  struct wps_context *wps);
  35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  36 #endif /* CONFIG_WPS_UPNP */
  37
  38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  39                                     const u8 *bssid,
  40                                     const u8 *ie, size_t ie_len,
  41                                     int ssi_signal);
  42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  43 static void hostapd_wps_nfc_clear(struct wps_context *wps);
  44
  45
  46 struct wps_for_each_data {
  47         int (*func)(struct hostapd_data *h, void *ctx);
  48         void *ctx;
  49         struct hostapd_data *calling_hapd;
  50 };
  51
  52
  53 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  54 {
  55         struct wps_for_each_data *data = ctx;
  56         size_t j;
  57
  58         if (iface == NULL)
  59                 return 0;
  60         for (j = 0; j < iface->num_bss; j++) {
  61                 struct hostapd_data *hapd = iface->bss[j];
  62                 int ret;
  63
  64                 if (hapd != data->calling_hapd &&
  65                     (hapd->conf->wps_independent ||
  66                      data->calling_hapd->conf->wps_independent))
  67                         continue;
  68
  69                 ret = data->func(hapd, data->ctx);
  70                 if (ret)
  71                         return ret;
  72         }
  73
  74         return 0;
  75 }
  76
  77
  78 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  79                                 int (*func)(struct hostapd_data *h, void *ctx),
  80                                 void *ctx)
  81 {
  82         struct hostapd_iface *iface = hapd->iface;
  83         struct wps_for_each_data data;
  84         data.func = func;
  85         data.ctx = ctx;
  86         data.calling_hapd = hapd;
  87         if (iface->interfaces == NULL ||
  88             iface->interfaces->for_each_interface == NULL)
  89                 return wps_for_each(iface, &data);
  90         return iface->interfaces->for_each_interface(iface->interfaces,
  91                                                      wps_for_each, &data);
  92 }
  93
  94
  95 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
  96                                   const u8 *p2p_dev_addr, const u8 *psk,
  97                                   size_t psk_len)
  98 {
  99         struct hostapd_data *hapd = ctx;
 100         struct hostapd_wpa_psk *p;
 101         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 102
 103         if (is_zero_ether_addr(p2p_dev_addr)) {
 104                 wpa_printf(MSG_DEBUG,
 105                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
 106                            MAC2STR(mac_addr));
 107         } else {
 108                 wpa_printf(MSG_DEBUG,
 109                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
 110                            " P2P Device Addr " MACSTR,
 111                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
 112         }
 113         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 114
 115         if (psk_len != PMK_LEN) {
 116                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
 117                            (unsigned long) psk_len);
 118                 return -1;
 119         }
 120
 121         /* Add the new PSK to runtime PSK list */
 122         p = os_zalloc(sizeof(*p));
 123         if (p == NULL)
 124                 return -1;
 125         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 126         os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
 127         os_memcpy(p->psk, psk, PMK_LEN);
 128
 129         if (hapd->new_psk_cb) {
 130                 hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr,
 131                                  psk, psk_len);
 132         }
 133
 134         p->next = ssid->wpa_psk;
 135         ssid->wpa_psk = p;
 136
 137         if (ssid->wpa_psk_file) {
 138                 FILE *f;
 139                 char hex[PMK_LEN * 2 + 1];
 140                 /* Add the new PSK to PSK list file */
 141                 f = fopen(ssid->wpa_psk_file, "a");
 142                 if (f == NULL) {
 143                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 144                                    "'%s'", ssid->wpa_psk_file);
 145                         return -1;
 146                 }
 147
 148                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 149                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 150                 fclose(f);
 151         }
 152
 153         return 0;
 154 }
 155
 156
 157 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 158                                  struct wpabuf *probe_resp_ie)
 159 {
 160         struct hostapd_data *hapd = ctx;
 161         wpabuf_free(hapd->wps_beacon_ie);
 162         hapd->wps_beacon_ie = beacon_ie;
 163         wpabuf_free(hapd->wps_probe_resp_ie);
 164         hapd->wps_probe_resp_ie = probe_resp_ie;
 165         if (hapd->beacon_set_done)
 166                 ieee802_11_set_beacon(hapd);
 167         return hostapd_set_ap_wps_ie(hapd);
 168 }
 169
 170
 171 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 172                                       const struct wps_device_data *dev)
 173 {
 174         struct hostapd_data *hapd = ctx;
 175         char uuid[40], txt[400];
 176         int len;
 177         char devtype[WPS_DEV_TYPE_BUFSIZE];
 178         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 179                 return;
 180         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 181         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 182                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 183                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 184                           dev->manufacturer, dev->model_name,
 185                           dev->model_number, dev->serial_number,
 186                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 187                                                sizeof(devtype)));
 188         if (!os_snprintf_error(sizeof(txt), len))
 189                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 190
 191         if (hapd->conf->wps_pin_requests) {
 192                 FILE *f;
 193                 struct os_time t;
 194                 f = fopen(hapd->conf->wps_pin_requests, "a");
 195                 if (f == NULL)
 196                         return;
 197                 os_get_time(&t);
 198                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 199                         "\t%s\n",
 200                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 201                         dev->manufacturer, dev->model_name, dev->model_number,
 202                         dev->serial_number,
 203                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 204                                              sizeof(devtype)));
 205                 fclose(f);
 206         }
 207 }
 208
 209
 210 struct wps_stop_reg_data {
 211         struct hostapd_data *current_hapd;
 212         const u8 *uuid_e;
 213         const u8 *dev_pw;
 214         size_t dev_pw_len;
 215 };
 216
 217 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
 218 {
 219         struct wps_stop_reg_data *data = ctx;
 220         if (hapd != data->current_hapd && hapd->wps != NULL)
 221                 wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
 222                                        data->dev_pw, data->dev_pw_len);
 223         return 0;
 224 }
 225
 226
 227 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 228                                        const u8 *uuid_e, const u8 *dev_pw,
 229                                        size_t dev_pw_len)
 230 {
 231         struct hostapd_data *hapd = ctx;
 232         char uuid[40];
 233         struct wps_stop_reg_data data;
 234         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 235                 return;
 236         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 237                 MAC2STR(mac_addr), uuid);
 238         if (hapd->wps_reg_success_cb)
 239                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 240                                          mac_addr, uuid_e);
 241         data.current_hapd = hapd;
 242         data.uuid_e = uuid_e;
 243         data.dev_pw = dev_pw;
 244         data.dev_pw_len = dev_pw_len;
 245         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 246 }
 247
 248
 249 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 250                                          const u8 *uuid_e,
 251                                          const u8 *pri_dev_type,
 252                                          u16 config_methods,
 253                                          u16 dev_password_id, u8 request_type,
 254                                          const char *dev_name)
 255 {
 256         struct hostapd_data *hapd = ctx;
 257         char uuid[40];
 258         char devtype[WPS_DEV_TYPE_BUFSIZE];
 259         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 260                 return;
 261         if (dev_name == NULL)
 262                 dev_name = "";
 263         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 264                      " %s %s 0x%x %u %u [%s]",
 265                      MAC2STR(addr), uuid,
 266                      wps_dev_type_bin2str(pri_dev_type, devtype,
 267                                           sizeof(devtype)),
 268                      config_methods, dev_password_id, request_type, dev_name);
 269 }
 270
 271
 272 static int str_starts(const char *str, const char *start)
 273 {
 274         return os_strncmp(str, start, os_strlen(start)) == 0;
 275 }
 276
 277
 278 static void wps_reload_config(void *eloop_data, void *user_ctx)
 279 {
 280         struct hostapd_iface *iface = eloop_data;
 281
 282         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 283         if (iface->interfaces == NULL ||
 284             iface->interfaces->reload_config(iface) < 0) {
 285                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 286                            "configuration");
 287         }
 288 }
 289
 290
 291 void hostapd_wps_eap_completed(struct hostapd_data *hapd)
 292 {
 293         /*
 294          * Reduce race condition of the station trying to reconnect immediately
 295          * after AP reconfiguration through WPS by rescheduling the reload
 296          * timeout to happen after EAP completion rather than the originally
 297          * scheduled 100 ms after new configuration became known.
 298          */
 299         if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) ==
 300             1)
 301                 wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload");
 302 }
 303
 304
 305 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 306                               size_t attr_len)
 307 {
 308         size_t blen = attr_len * 2 + 1;
 309         char *buf = os_malloc(blen);
 310         if (buf) {
 311                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 312                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 313                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 314                 os_free(buf);
 315         }
 316 }
 317
 318
 319 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd,
 320                                        const struct wps_credential *cred)
 321 {
 322         struct hostapd_bss_config *bss = hapd->conf;
 323
 324         wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration");
 325
 326         bss->wps_state = 2;
 327         if (cred->ssid_len <= SSID_MAX_LEN) {
 328                 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len);
 329                 bss->ssid.ssid_len = cred->ssid_len;
 330                 bss->ssid.ssid_set = 1;
 331         }
 332
 333         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 334             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 335                 bss->wpa = 3;
 336         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 337                 bss->wpa = 2;
 338         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 339                 bss->wpa = 1;
 340         else
 341                 bss->wpa = 0;
 342
 343         if (bss->wpa) {
 344                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA))
 345                         bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 346                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 347                         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
 348
 349                 bss->wpa_pairwise = 0;
 350                 if (cred->encr_type & WPS_ENCR_AES) {
 351                         if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
 352                                 bss->wpa_pairwise |= WPA_CIPHER_GCMP;
 353                         else
 354                                 bss->wpa_pairwise |= WPA_CIPHER_CCMP;
 355                 }
 356                 if (cred->encr_type & WPS_ENCR_TKIP)
 357                         bss->wpa_pairwise |= WPA_CIPHER_TKIP;
 358                 bss->rsn_pairwise = bss->wpa_pairwise;
 359                 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
 360                                                             bss->wpa_pairwise,
 361                                                             bss->rsn_pairwise);
 362
 363                 if (cred->key_len >= 8 && cred->key_len < 64) {
 364                         os_free(bss->ssid.wpa_passphrase);
 365                         bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1);
 366                         if (bss->ssid.wpa_passphrase)
 367                                 os_memcpy(bss->ssid.wpa_passphrase, cred->key,
 368                                           cred->key_len);
 369                         hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
 370                 } else if (cred->key_len == 64) {
 371                         hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
 372                         bss->ssid.wpa_psk =
 373                                 os_zalloc(sizeof(struct hostapd_wpa_psk));
 374                         if (bss->ssid.wpa_psk &&
 375                             hexstr2bin((const char *) cred->key,
 376                                        bss->ssid.wpa_psk->psk, PMK_LEN) == 0) {
 377                                 bss->ssid.wpa_psk->group = 1;
 378                                 os_free(bss->ssid.wpa_passphrase);
 379                                 bss->ssid.wpa_passphrase = NULL;
 380                         }
 381                 }
 382                 bss->auth_algs = 1;
 383         } else {
 384                 /*
 385                  * WPS 2.0 does not allow WEP to be configured, so no need to
 386                  * process that option here either.
 387                  */
 388                 bss->auth_algs = 1;
 389         }
 390
 391         /* Schedule configuration reload after short period of time to allow
 392          * EAP-WSC to be finished.
 393          */
 394         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 395                                NULL);
 396
 397         return 0;
 398 }
 399
 400
 401 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 402 {
 403         const struct wps_credential *cred = ctx;
 404         FILE *oconf, *nconf;
 405         size_t len, i;
 406         char *tmp_fname;
 407         char buf[1024];
 408         int multi_bss;
 409         int wpa;
 410
 411         if (hapd->wps == NULL)
 412                 return 0;
 413
 414         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 415                         cred->cred_attr, cred->cred_attr_len);
 416
 417         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 418         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 419         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 420                    cred->auth_type);
 421         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 422         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 423         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 424                         cred->key, cred->key_len);
 425         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 426                    MAC2STR(cred->mac_addr));
 427
 428         if ((hapd->conf->wps_cred_processing == 1 ||
 429              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 430                 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
 431         } else if (hapd->conf->wps_cred_processing == 1 ||
 432                    hapd->conf->wps_cred_processing == 2) {
 433                 struct wpabuf *attr;
 434                 attr = wpabuf_alloc(200);
 435                 if (attr && wps_build_credential_wrap(attr, cred) == 0)
 436                         hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
 437                                           wpabuf_len(attr));
 438                 wpabuf_free(attr);
 439         } else
 440                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 441
 442         if (hapd->conf->wps_cred_processing == 1)
 443                 return 0;
 444
 445         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 446         hapd->wps->ssid_len = cred->ssid_len;
 447         hapd->wps->encr_types = cred->encr_type;
 448         hapd->wps->encr_types_rsn = cred->encr_type;
 449         hapd->wps->encr_types_wpa = cred->encr_type;
 450         hapd->wps->auth_types = cred->auth_type;
 451         hapd->wps->ap_encr_type = cred->encr_type;
 452         hapd->wps->ap_auth_type = cred->auth_type;
 453         if (cred->key_len == 0) {
 454                 os_free(hapd->wps->network_key);
 455                 hapd->wps->network_key = NULL;
 456                 hapd->wps->network_key_len = 0;
 457         } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) &&
 458                    (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) {
 459                 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2",
 460                            (unsigned long) cred->key_len);
 461                 return -1;
 462         } else {
 463                 if (hapd->wps->network_key == NULL ||
 464                     hapd->wps->network_key_len < cred->key_len) {
 465                         hapd->wps->network_key_len = 0;
 466                         os_free(hapd->wps->network_key);
 467                         hapd->wps->network_key = os_malloc(cred->key_len);
 468                         if (hapd->wps->network_key == NULL)
 469                                 return -1;
 470                 }
 471                 hapd->wps->network_key_len = cred->key_len;
 472                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 473         }
 474         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 475
 476         if (hapd->iface->config_fname == NULL)
 477                 return hapd_wps_reconfig_in_memory(hapd, cred);
 478         len = os_strlen(hapd->iface->config_fname) + 5;
 479         tmp_fname = os_malloc(len);
 480         if (tmp_fname == NULL)
 481                 return -1;
 482         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 483
 484         oconf = fopen(hapd->iface->config_fname, "r");
 485         if (oconf == NULL) {
 486                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 487                            "configuration file");
 488                 os_free(tmp_fname);
 489                 return -1;
 490         }
 491
 492         nconf = fopen(tmp_fname, "w");
 493         if (nconf == NULL) {
 494                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 495                            "configuration file");
 496                 os_free(tmp_fname);
 497                 fclose(oconf);
 498                 return -1;
 499         }
 500
 501         fprintf(nconf, "# WPS configuration - START\n");
 502
 503         fprintf(nconf, "wps_state=2\n");
 504
 505         if (is_hex(cred->ssid, cred->ssid_len)) {
 506                 fprintf(nconf, "ssid2=");
 507                 for (i = 0; i < cred->ssid_len; i++)
 508                         fprintf(nconf, "%02x", cred->ssid[i]);
 509                 fprintf(nconf, "\n");
 510         } else {
 511                 fprintf(nconf, "ssid=");
 512                 for (i = 0; i < cred->ssid_len; i++)
 513                         fputc(cred->ssid[i], nconf);
 514                 fprintf(nconf, "\n");
 515         }
 516
 517         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 518             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 519                 wpa = 3;
 520         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 521                 wpa = 2;
 522         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 523                 wpa = 1;
 524         else
 525                 wpa = 0;
 526
 527         if (wpa) {
 528                 char *prefix;
 529                 fprintf(nconf, "wpa=%d\n", wpa);
 530
 531                 fprintf(nconf, "wpa_key_mgmt=");
 532                 prefix = "";
 533                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 534                         fprintf(nconf, "WPA-EAP");
 535                         prefix = " ";
 536                 }
 537                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 538                         fprintf(nconf, "%sWPA-PSK", prefix);
 539                 fprintf(nconf, "\n");
 540
 541                 fprintf(nconf, "wpa_pairwise=");
 542                 prefix = "";
 543                 if (cred->encr_type & WPS_ENCR_AES) {
 544                         if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
 545                                 fprintf(nconf, "GCMP");
 546                         else
 547                                 fprintf(nconf, "CCMP");
 548
 549                         prefix = " ";
 550                 }
 551                 if (cred->encr_type & WPS_ENCR_TKIP) {
 552                         fprintf(nconf, "%sTKIP", prefix);
 553                 }
 554                 fprintf(nconf, "\n");
 555
 556                 if (cred->key_len >= 8 && cred->key_len < 64) {
 557                         fprintf(nconf, "wpa_passphrase=");
 558                         for (i = 0; i < cred->key_len; i++)
 559                                 fputc(cred->key[i], nconf);
 560                         fprintf(nconf, "\n");
 561                 } else if (cred->key_len == 64) {
 562                         fprintf(nconf, "wpa_psk=");
 563                         for (i = 0; i < cred->key_len; i++)
 564                                 fputc(cred->key[i], nconf);
 565                         fprintf(nconf, "\n");
 566                 } else {
 567                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 568                                    "for WPA/WPA2",
 569                                    (unsigned long) cred->key_len);
 570                 }
 571
 572                 fprintf(nconf, "auth_algs=1\n");
 573         } else {
 574                 /*
 575                  * WPS 2.0 does not allow WEP to be configured, so no need to
 576                  * process that option here either.
 577                  */
 578                 fprintf(nconf, "auth_algs=1\n");
 579         }
 580
 581         fprintf(nconf, "# WPS configuration - END\n");
 582
 583         multi_bss = 0;
 584         while (fgets(buf, sizeof(buf), oconf)) {
 585                 if (os_strncmp(buf, "bss=", 4) == 0)
 586                         multi_bss = 1;
 587                 if (!multi_bss &&
 588                     (str_starts(buf, "ssid=") ||
 589                      str_starts(buf, "ssid2=") ||
 590                      str_starts(buf, "auth_algs=") ||
 591                      str_starts(buf, "wep_default_key=") ||
 592                      str_starts(buf, "wep_key") ||
 593                      str_starts(buf, "wps_state=") ||
 594                      str_starts(buf, "wpa=") ||
 595                      str_starts(buf, "wpa_psk=") ||
 596                      str_starts(buf, "wpa_pairwise=") ||
 597                      str_starts(buf, "rsn_pairwise=") ||
 598                      str_starts(buf, "wpa_key_mgmt=") ||
 599                      str_starts(buf, "wpa_passphrase="))) {
 600                         fprintf(nconf, "#WPS# %s", buf);
 601                 } else
 602                         fprintf(nconf, "%s", buf);
 603         }
 604
 605         fclose(nconf);
 606         fclose(oconf);
 607
 608         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 609                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 610                            "configuration file: %s", strerror(errno));
 611                 os_free(tmp_fname);
 612                 return -1;
 613         }
 614
 615         os_free(tmp_fname);
 616
 617         /* Schedule configuration reload after short period of time to allow
 618          * EAP-WSC to be finished.
 619          */
 620         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 621                                NULL);
 622
 623         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 624
 625         return 0;
 626 }
 627
 628
 629 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 630 {
 631         struct hostapd_data *hapd = ctx;
 632         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 633 }
 634
 635
 636 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 637 {
 638         struct hostapd_data *hapd = eloop_data;
 639
 640         if (hapd->conf->ap_setup_locked)
 641                 return;
 642         if (hapd->ap_pin_failures_consecutive >= 10)
 643                 return;
 644
 645         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 646         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 647         hapd->wps->ap_setup_locked = 0;
 648         wps_registrar_update_ie(hapd->wps->registrar);
 649 }
 650
 651
 652 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 653 {
 654         struct wps_event_pwd_auth_fail *data = ctx;
 655
 656         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 657                 return 0;
 658
 659         /*
 660          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 661          * for some time if this happens multiple times to slow down brute
 662          * force attacks.
 663          */
 664         hapd->ap_pin_failures++;
 665         hapd->ap_pin_failures_consecutive++;
 666         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 667                    "(%u consecutive)",
 668                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 669         if (hapd->ap_pin_failures < 3)
 670                 return 0;
 671
 672         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 673         hapd->wps->ap_setup_locked = 1;
 674
 675         wps_registrar_update_ie(hapd->wps->registrar);
 676
 677         if (!hapd->conf->ap_setup_locked &&
 678             hapd->ap_pin_failures_consecutive >= 10) {
 679                 /*
 680                  * In indefinite lockdown - disable automatic AP PIN
 681                  * reenablement.
 682                  */
 683                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 684                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 685         } else if (!hapd->conf->ap_setup_locked) {
 686                 if (hapd->ap_pin_lockout_time == 0)
 687                         hapd->ap_pin_lockout_time = 60;
 688                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 689                          (hapd->ap_pin_failures % 3) == 0)
 690                         hapd->ap_pin_lockout_time *= 2;
 691
 692                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 693                            hapd->ap_pin_lockout_time);
 694                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 695                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 696                                        hostapd_wps_reenable_ap_pin, hapd,
 697                                        NULL);
 698         }
 699
 700         return 0;
 701 }
 702
 703
 704 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 705                                   struct wps_event_pwd_auth_fail *data)
 706 {
 707         /* Update WPS Status - Authentication Failure */
 708         wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
 709         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 710         hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
 711         os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
 712
 713         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 714 }
 715
 716
 717 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 718 {
 719         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 720                 return 0;
 721
 722         if (hapd->ap_pin_failures_consecutive == 0)
 723                 return 0;
 724
 725         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 726                    "- total validation failures %u (%u consecutive)",
 727                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 728         hapd->ap_pin_failures_consecutive = 0;
 729
 730         return 0;
 731 }
 732
 733
 734 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 735 {
 736         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 737 }
 738
 739
 740 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
 741 {
 742         /* Update WPS Status - PBC Overlap */
 743         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
 744 }
 745
 746
 747 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
 748 {
 749         /* Update WPS PBC Status:PBC Timeout */
 750         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
 751 }
 752
 753
 754 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
 755 {
 756         /* Update WPS PBC status - Active */
 757         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
 758 }
 759
 760
 761 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
 762 {
 763         /* Update WPS PBC status - Active */
 764         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 765 }
 766
 767
 768 static void hostapd_wps_event_success(struct hostapd_data *hapd,
 769                                       struct wps_event_success *success)
 770 {
 771         /* Update WPS status - Success */
 772         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 773         hapd->wps_stats.status = WPS_STATUS_SUCCESS;
 774         os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
 775 }
 776
 777
 778 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 779                                    struct wps_event_fail *fail)
 780 {
 781         /* Update WPS status - Failure */
 782         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 783         os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
 784
 785         hapd->wps_stats.failure_reason = fail->error_indication;
 786
 787         if (fail->error_indication > 0 &&
 788             fail->error_indication < NUM_WPS_EI_VALUES) {
 789                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 790                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 791                         fail->msg, fail->config_error, fail->error_indication,
 792                         wps_ei_str(fail->error_indication));
 793         } else {
 794                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 795                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 796                         fail->msg, fail->config_error);
 797         }
 798 }
 799
 800
 801 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 802                                  union wps_event_data *data)
 803 {
 804         struct hostapd_data *hapd = ctx;
 805
 806         switch (event) {
 807         case WPS_EV_M2D:
 808                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 809                 break;
 810         case WPS_EV_FAIL:
 811                 hostapd_wps_event_fail(hapd, &data->fail);
 812                 break;
 813         case WPS_EV_SUCCESS:
 814                 hostapd_wps_event_success(hapd, &data->success);
 815                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 816                 break;
 817         case WPS_EV_PWD_AUTH_FAIL:
 818                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 819                 break;
 820         case WPS_EV_PBC_OVERLAP:
 821                 hostapd_wps_event_pbc_overlap(hapd);
 822                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 823                 break;
 824         case WPS_EV_PBC_TIMEOUT:
 825                 hostapd_wps_event_pbc_timeout(hapd);
 826                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 827                 break;
 828         case WPS_EV_PBC_ACTIVE:
 829                 hostapd_wps_event_pbc_active(hapd);
 830                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
 831                 break;
 832         case WPS_EV_PBC_DISABLE:
 833                 hostapd_wps_event_pbc_disable(hapd);
 834                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
 835                 break;
 836         case WPS_EV_ER_AP_ADD:
 837                 break;
 838         case WPS_EV_ER_AP_REMOVE:
 839                 break;
 840         case WPS_EV_ER_ENROLLEE_ADD:
 841                 break;
 842         case WPS_EV_ER_ENROLLEE_REMOVE:
 843                 break;
 844         case WPS_EV_ER_AP_SETTINGS:
 845                 break;
 846         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 847                 break;
 848         case WPS_EV_AP_PIN_SUCCESS:
 849                 hostapd_wps_ap_pin_success(hapd);
 850                 break;
 851         }
 852         if (hapd->wps_event_cb)
 853                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 854 }
 855
 856
 857 static int hostapd_wps_rf_band_cb(void *ctx)
 858 {
 859         struct hostapd_data *hapd = ctx;
 860
 861         return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 862                 WPS_RF_50GHZ :
 863                 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
 864                 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 865 }
 866
 867
 868 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only)
 869 {
 870         wpabuf_free(hapd->wps_beacon_ie);
 871         hapd->wps_beacon_ie = NULL;
 872
 873         wpabuf_free(hapd->wps_probe_resp_ie);
 874         hapd->wps_probe_resp_ie = NULL;
 875
 876         if (deinit_only) {
 877                 if (hapd->drv_priv)
 878                         hostapd_reset_ap_wps_ie(hapd);
 879                 return;
 880         }
 881
 882         hostapd_set_ap_wps_ie(hapd);
 883 }
 884
 885
 886 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 887 {
 888         const u8 **uuid = ctx;
 889         size_t j;
 890
 891         if (iface == NULL)
 892                 return 0;
 893         for (j = 0; j < iface->num_bss; j++) {
 894                 struct hostapd_data *hapd = iface->bss[j];
 895                 if (hapd->wps && !hapd->conf->wps_independent &&
 896                     !is_nil_uuid(hapd->wps->uuid)) {
 897                         *uuid = hapd->wps->uuid;
 898                         return 1;
 899                 }
 900         }
 901
 902         return 0;
 903 }
 904
 905
 906 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 907 {
 908         const u8 *uuid;
 909         if (iface->interfaces == NULL ||
 910             iface->interfaces->for_each_interface == NULL)
 911                 return NULL;
 912         uuid = NULL;
 913         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 914                                               &uuid);
 915         return uuid;
 916 }
 917
 918
 919 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 920 {
 921         int *count= ctx;
 922         (*count)++;
 923         return 0;
 924 }
 925
 926
 927 static int interface_count(struct hostapd_iface *iface)
 928 {
 929         int count = 0;
 930         if (iface->interfaces == NULL ||
 931             iface->interfaces->for_each_interface == NULL)
 932                 return 0;
 933         iface->interfaces->for_each_interface(iface->interfaces,
 934                                               count_interface_cb, &count);
 935         return count;
 936 }
 937
 938
 939 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 940                                       struct wps_context *wps)
 941 {
 942         int i;
 943
 944         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 945                 wpabuf_free(wps->dev.vendor_ext[i]);
 946                 wps->dev.vendor_ext[i] = NULL;
 947
 948                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 949                         continue;
 950
 951                 wps->dev.vendor_ext[i] =
 952                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 953                 if (wps->dev.vendor_ext[i] == NULL) {
 954                         while (--i >= 0)
 955                                 wpabuf_free(wps->dev.vendor_ext[i]);
 956                         return -1;
 957                 }
 958         }
 959
 960         return 0;
 961 }
 962
 963
 964 static void hostapd_free_wps(struct wps_context *wps)
 965 {
 966         int i;
 967
 968         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
 969                 wpabuf_free(wps->dev.vendor_ext[i]);
 970         wps_device_data_free(&wps->dev);
 971         os_free(wps->network_key);
 972         hostapd_wps_nfc_clear(wps);
 973         wpabuf_free(wps->dh_pubkey);
 974         wpabuf_free(wps->dh_privkey);
 975         os_free(wps);
 976 }
 977
 978
 979 int hostapd_init_wps(struct hostapd_data *hapd,
 980                      struct hostapd_bss_config *conf)
 981 {
 982         struct wps_context *wps;
 983         struct wps_registrar_config cfg;
 984
 985         if (conf->wps_state == 0) {
 986                 hostapd_wps_clear_ies(hapd, 0);
 987                 return 0;
 988         }
 989
 990         wps = os_zalloc(sizeof(*wps));
 991         if (wps == NULL)
 992                 return -1;
 993
 994         wps->cred_cb = hostapd_wps_cred_cb;
 995         wps->event_cb = hostapd_wps_event_cb;
 996         wps->rf_band_cb = hostapd_wps_rf_band_cb;
 997         wps->cb_ctx = hapd;
 998
 999         os_memset(&cfg, 0, sizeof(cfg));
1000         wps->wps_state = hapd->conf->wps_state;
1001         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
1002         if (is_nil_uuid(hapd->conf->uuid)) {
1003                 const u8 *uuid;
1004                 uuid = get_own_uuid(hapd->iface);
1005                 if (uuid && !conf->wps_independent) {
1006                         os_memcpy(wps->uuid, uuid, UUID_LEN);
1007                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
1008                                     "interface", wps->uuid, UUID_LEN);
1009                 } else {
1010                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
1011                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1012                                     "address", wps->uuid, UUID_LEN);
1013                 }
1014         } else {
1015                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
1016                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
1017                             wps->uuid, UUID_LEN);
1018         }
1019         wps->ssid_len = hapd->conf->ssid.ssid_len;
1020         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
1021         wps->ap = 1;
1022         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
1023         wps->dev.device_name = hapd->conf->device_name ?
1024                 os_strdup(hapd->conf->device_name) : NULL;
1025         wps->dev.manufacturer = hapd->conf->manufacturer ?
1026                 os_strdup(hapd->conf->manufacturer) : NULL;
1027         wps->dev.model_name = hapd->conf->model_name ?
1028                 os_strdup(hapd->conf->model_name) : NULL;
1029         wps->dev.model_number = hapd->conf->model_number ?
1030                 os_strdup(hapd->conf->model_number) : NULL;
1031         wps->dev.serial_number = hapd->conf->serial_number ?
1032                 os_strdup(hapd->conf->serial_number) : NULL;
1033         wps->config_methods =
1034                 wps_config_methods_str2bin(hapd->conf->config_methods);
1035         if ((wps->config_methods &
1036              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1037               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1038                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1039                            "virtual_display for WPS 2.0 compliance");
1040                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1041         }
1042         if ((wps->config_methods &
1043              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1044               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1045                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1046                            "virtual_push_button for WPS 2.0 compliance");
1047                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1048         }
1049         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1050                   WPS_DEV_TYPE_LEN);
1051
1052         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0)
1053                 goto fail;
1054
1055         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1056
1057         if (conf->wps_rf_bands) {
1058                 wps->dev.rf_bands = conf->wps_rf_bands;
1059         } else {
1060                 wps->dev.rf_bands =
1061                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1062                         WPS_RF_50GHZ :
1063                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
1064                         WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1065         }
1066
1067         if (conf->wpa & WPA_PROTO_RSN) {
1068                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1069                         wps->auth_types |= WPS_AUTH_WPA2PSK;
1070                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1071                         wps->auth_types |= WPS_AUTH_WPA2;
1072
1073                 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP)) {
1074                         wps->encr_types |= WPS_ENCR_AES;
1075                         wps->encr_types_rsn |= WPS_ENCR_AES;
1076                 }
1077                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP) {
1078                         wps->encr_types |= WPS_ENCR_TKIP;
1079                         wps->encr_types_rsn |= WPS_ENCR_TKIP;
1080                 }
1081         }
1082
1083         if (conf->wpa & WPA_PROTO_WPA) {
1084                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1085                         wps->auth_types |= WPS_AUTH_WPAPSK;
1086                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1087                         wps->auth_types |= WPS_AUTH_WPA;
1088
1089                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP) {
1090                         wps->encr_types |= WPS_ENCR_AES;
1091                         wps->encr_types_wpa |= WPS_ENCR_AES;
1092                 }
1093                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP) {
1094                         wps->encr_types |= WPS_ENCR_TKIP;
1095                         wps->encr_types_wpa |= WPS_ENCR_TKIP;
1096                 }
1097         }
1098
1099         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1100                 wps->encr_types |= WPS_ENCR_NONE;
1101                 wps->auth_types |= WPS_AUTH_OPEN;
1102         }
1103
1104         if (conf->ssid.wpa_psk_file) {
1105                 /* Use per-device PSKs */
1106         } else if (conf->ssid.wpa_passphrase) {
1107                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1108                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1109         } else if (conf->ssid.wpa_psk) {
1110                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1111                 if (wps->network_key == NULL)
1112                         goto fail;
1113                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1114                                  conf->ssid.wpa_psk->psk, PMK_LEN);
1115                 wps->network_key_len = 2 * PMK_LEN;
1116         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1117                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1118                 if (wps->network_key == NULL)
1119                         goto fail;
1120                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1121                           conf->ssid.wep.len[0]);
1122                 wps->network_key_len = conf->ssid.wep.len[0];
1123         }
1124
1125         if (conf->ssid.wpa_psk) {
1126                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1127                 wps->psk_set = 1;
1128         }
1129
1130         wps->ap_auth_type = wps->auth_types;
1131         wps->ap_encr_type = wps->encr_types;
1132         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1133                 /* Override parameters to enable security by default */
1134                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1135                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1136                 wps->encr_types_rsn = WPS_ENCR_AES | WPS_ENCR_TKIP;
1137                 wps->encr_types_wpa = WPS_ENCR_AES | WPS_ENCR_TKIP;
1138         }
1139
1140         wps->ap_settings = conf->ap_settings;
1141         wps->ap_settings_len = conf->ap_settings_len;
1142
1143         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1144         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1145         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1146         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1147         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1148         cfg.cb_ctx = hapd;
1149         cfg.skip_cred_build = conf->skip_cred_build;
1150         cfg.extra_cred = conf->extra_cred;
1151         cfg.extra_cred_len = conf->extra_cred_len;
1152         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1153                 conf->skip_cred_build;
1154         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1155                 cfg.static_wep_only = 1;
1156         cfg.dualband = interface_count(hapd->iface) > 1;
1157         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1158             (WPS_RF_50GHZ | WPS_RF_24GHZ))
1159                 cfg.dualband = 1;
1160         if (cfg.dualband)
1161                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1162         cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
1163
1164         wps->registrar = wps_registrar_init(wps, &cfg);
1165         if (wps->registrar == NULL) {
1166                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1167                 goto fail;
1168         }
1169
1170 #ifdef CONFIG_WPS_UPNP
1171         wps->friendly_name = hapd->conf->friendly_name;
1172         wps->manufacturer_url = hapd->conf->manufacturer_url;
1173         wps->model_description = hapd->conf->model_description;
1174         wps->model_url = hapd->conf->model_url;
1175         wps->upc = hapd->conf->upc;
1176 #endif /* CONFIG_WPS_UPNP */
1177
1178         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1179
1180         hapd->wps = wps;
1181
1182         return 0;
1183
1184 fail:
1185         hostapd_free_wps(wps);
1186         return -1;
1187 }
1188
1189
1190 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1191 {
1192         struct wps_context *wps = hapd->wps;
1193
1194         if (wps == NULL)
1195                 return 0;
1196
1197 #ifdef CONFIG_WPS_UPNP
1198         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1199                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1200                 wps_registrar_deinit(wps->registrar);
1201                 hostapd_free_wps(wps);
1202                 hapd->wps = NULL;
1203                 return -1;
1204         }
1205 #endif /* CONFIG_WPS_UPNP */
1206
1207         return 0;
1208 }
1209
1210
1211 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1212 {
1213 #ifdef CONFIG_WPS_NFC
1214         wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps);
1215         wps->ap_nfc_dev_pw_id = 0;
1216         wpabuf_free(wps->ap_nfc_dh_pubkey);
1217         wps->ap_nfc_dh_pubkey = NULL;
1218         wpabuf_free(wps->ap_nfc_dh_privkey);
1219         wps->ap_nfc_dh_privkey = NULL;
1220         wpabuf_free(wps->ap_nfc_dev_pw);
1221         wps->ap_nfc_dev_pw = NULL;
1222 #endif /* CONFIG_WPS_NFC */
1223 }
1224
1225
1226 void hostapd_deinit_wps(struct hostapd_data *hapd)
1227 {
1228         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1229         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1230         eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL);
1231         if (hapd->wps == NULL) {
1232                 hostapd_wps_clear_ies(hapd, 1);
1233                 return;
1234         }
1235 #ifdef CONFIG_WPS_UPNP
1236         hostapd_wps_upnp_deinit(hapd);
1237 #endif /* CONFIG_WPS_UPNP */
1238         wps_registrar_deinit(hapd->wps->registrar);
1239         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1240         hostapd_free_wps(hapd->wps);
1241         hapd->wps = NULL;
1242         hostapd_wps_clear_ies(hapd, 1);
1243 }
1244
1245
1246 void hostapd_update_wps(struct hostapd_data *hapd)
1247 {
1248         if (hapd->wps == NULL)
1249                 return;
1250
1251 #ifdef CONFIG_WPS_UPNP
1252         hapd->wps->friendly_name = hapd->conf->friendly_name;
1253         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1254         hapd->wps->model_description = hapd->conf->model_description;
1255         hapd->wps->model_url = hapd->conf->model_url;
1256         hapd->wps->upc = hapd->conf->upc;
1257 #endif /* CONFIG_WPS_UPNP */
1258
1259         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1260
1261         if (hapd->conf->wps_state)
1262                 wps_registrar_update_ie(hapd->wps->registrar);
1263         else
1264                 hostapd_deinit_wps(hapd);
1265 }
1266
1267
1268 struct wps_add_pin_data {
1269         const u8 *addr;
1270         const u8 *uuid;
1271         const u8 *pin;
1272         size_t pin_len;
1273         int timeout;
1274         int added;
1275 };
1276
1277
1278 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1279 {
1280         struct wps_add_pin_data *data = ctx;
1281         int ret;
1282
1283         if (hapd->wps == NULL)
1284                 return 0;
1285         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1286                                     data->uuid, data->pin, data->pin_len,
1287                                     data->timeout);
1288         if (ret == 0)
1289                 data->added++;
1290         return ret;
1291 }
1292
1293
1294 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1295                         const char *uuid, const char *pin, int timeout)
1296 {
1297         u8 u[UUID_LEN];
1298         struct wps_add_pin_data data;
1299
1300         data.addr = addr;
1301         data.uuid = u;
1302         data.pin = (const u8 *) pin;
1303         data.pin_len = os_strlen(pin);
1304         data.timeout = timeout;
1305         data.added = 0;
1306
1307         if (os_strcmp(uuid, "any") == 0)
1308                 data.uuid = NULL;
1309         else {
1310                 if (uuid_str2bin(uuid, u))
1311                         return -1;
1312                 data.uuid = u;
1313         }
1314         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1315                 return -1;
1316         return data.added ? 0 : -1;
1317 }
1318
1319
1320 struct wps_button_pushed_ctx {
1321         const u8 *p2p_dev_addr;
1322         unsigned int count;
1323 };
1324
1325 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1326 {
1327         struct wps_button_pushed_ctx *data = ctx;
1328
1329         if (hapd->wps) {
1330                 data->count++;
1331                 return wps_registrar_button_pushed(hapd->wps->registrar,
1332                                                    data->p2p_dev_addr);
1333         }
1334
1335         return 0;
1336 }
1337
1338
1339 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1340                               const u8 *p2p_dev_addr)
1341 {
1342         struct wps_button_pushed_ctx ctx;
1343         int ret;
1344
1345         os_memset(&ctx, 0, sizeof(ctx));
1346         ctx.p2p_dev_addr = p2p_dev_addr;
1347         ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx);
1348         if (ret == 0 && !ctx.count)
1349                 ret = -1;
1350         return ret;
1351 }
1352
1353
1354 struct wps_cancel_ctx {
1355         unsigned int count;
1356 };
1357
1358 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1359 {
1360         struct wps_cancel_ctx *data = ctx;
1361
1362         if (hapd->wps) {
1363                 data->count++;
1364                 wps_registrar_wps_cancel(hapd->wps->registrar);
1365                 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1366         }
1367
1368         return 0;
1369 }
1370
1371
1372 int hostapd_wps_cancel(struct hostapd_data *hapd)
1373 {
1374         struct wps_cancel_ctx ctx;
1375         int ret;
1376
1377         os_memset(&ctx, 0, sizeof(ctx));
1378         ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx);
1379         if (ret == 0 && !ctx.count)
1380                 ret = -1;
1381         return ret;
1382 }
1383
1384
1385 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1386                                     const u8 *bssid,
1387                                     const u8 *ie, size_t ie_len,
1388                                     int ssi_signal)
1389 {
1390         struct hostapd_data *hapd = ctx;
1391         struct wpabuf *wps_ie;
1392         struct ieee802_11_elems elems;
1393
1394         if (hapd->wps == NULL)
1395                 return 0;
1396
1397         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1398                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1399                            MACSTR, MAC2STR(addr));
1400                 return 0;
1401         }
1402
1403         if (elems.ssid && elems.ssid_len > 0 &&
1404             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1405              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1406              0))
1407                 return 0; /* Not for us */
1408
1409         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1410         if (wps_ie == NULL)
1411                 return 0;
1412         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1413                 wpabuf_free(wps_ie);
1414                 return 0;
1415         }
1416
1417         if (wpabuf_len(wps_ie) > 0) {
1418                 int p2p_wildcard = 0;
1419 #ifdef CONFIG_P2P
1420                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1421                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1422                               P2P_WILDCARD_SSID_LEN) == 0)
1423                         p2p_wildcard = 1;
1424 #endif /* CONFIG_P2P */
1425                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1426                                            p2p_wildcard);
1427 #ifdef CONFIG_WPS_UPNP
1428                 /* FIX: what exactly should be included in the WLANEvent?
1429                  * WPS attributes? Full ProbeReq frame? */
1430                 if (!p2p_wildcard)
1431                         upnp_wps_device_send_wlan_event(
1432                                 hapd->wps_upnp, addr,
1433                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1434 #endif /* CONFIG_WPS_UPNP */
1435         }
1436
1437         wpabuf_free(wps_ie);
1438
1439         return 0;
1440 }
1441
1442
1443 #ifdef CONFIG_WPS_UPNP
1444
1445 static int hostapd_rx_req_put_wlan_response(
1446         void *priv, enum upnp_wps_wlanevent_type ev_type,
1447         const u8 *mac_addr, const struct wpabuf *msg,
1448         enum wps_msg_type msg_type)
1449 {
1450         struct hostapd_data *hapd = priv;
1451         struct sta_info *sta;
1452         struct upnp_pending_message *p;
1453
1454         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1455                    MACSTR, ev_type, MAC2STR(mac_addr));
1456         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1457                     wpabuf_head(msg), wpabuf_len(msg));
1458         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1459                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1460                            "PutWLANResponse WLANEventType %d", ev_type);
1461                 return -1;
1462         }
1463
1464         /*
1465          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1466          * server implementation for delivery to the peer.
1467          */
1468
1469         sta = ap_get_sta(hapd, mac_addr);
1470 #ifndef CONFIG_WPS_STRICT
1471         if (!sta) {
1472                 /*
1473                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1474                  * Pick STA that is in an ongoing WPS registration without
1475                  * checking the MAC address.
1476                  */
1477                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1478                            "on NewWLANEventMAC; try wildcard match");
1479                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1480                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1481                                 break;
1482                 }
1483         }
1484 #endif /* CONFIG_WPS_STRICT */
1485
1486         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1487                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1488                 return 0;
1489         }
1490
1491         if (!sta->eapol_sm) {
1492                 /*
1493                  * This can happen, e.g., if an ER sends an extra message after
1494                  * the station has disassociated (but not fully
1495                  * deauthenticated).
1496                  */
1497                 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized");
1498                 return 0;
1499         }
1500
1501         p = os_zalloc(sizeof(*p));
1502         if (p == NULL)
1503                 return -1;
1504         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1505         p->msg = wpabuf_dup(msg);
1506         p->type = msg_type;
1507         p->next = hapd->wps->upnp_msgs;
1508         hapd->wps->upnp_msgs = p;
1509
1510         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1511 }
1512
1513
1514 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1515                                  struct wps_context *wps)
1516 {
1517         struct upnp_wps_device_ctx *ctx;
1518
1519         if (!hapd->conf->upnp_iface)
1520                 return 0;
1521         ctx = os_zalloc(sizeof(*ctx));
1522         if (ctx == NULL)
1523                 return -1;
1524
1525         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1526         if (hapd->conf->ap_pin)
1527                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1528
1529         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1530                                               hapd->conf->upnp_iface);
1531         if (hapd->wps_upnp == NULL)
1532                 return -1;
1533         wps->wps_upnp = hapd->wps_upnp;
1534
1535         return 0;
1536 }
1537
1538
1539 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1540 {
1541         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1542 }
1543
1544 #endif /* CONFIG_WPS_UPNP */
1545
1546
1547 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1548                             char *buf, size_t buflen)
1549 {
1550         if (hapd->wps == NULL)
1551                 return 0;
1552         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1553 }
1554
1555
1556 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1557 {
1558         struct hostapd_data *hapd = eloop_data;
1559         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1560         hostapd_wps_ap_pin_disable(hapd);
1561         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1562 }
1563
1564
1565 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1566 {
1567         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1568         hapd->ap_pin_failures = 0;
1569         hapd->ap_pin_failures_consecutive = 0;
1570         hapd->conf->ap_setup_locked = 0;
1571         if (hapd->wps->ap_setup_locked) {
1572                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1573                 hapd->wps->ap_setup_locked = 0;
1574                 wps_registrar_update_ie(hapd->wps->registrar);
1575         }
1576         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1577         if (timeout > 0)
1578                 eloop_register_timeout(timeout, 0,
1579                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1580 }
1581
1582
1583 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1584 {
1585         os_free(hapd->conf->ap_pin);
1586         hapd->conf->ap_pin = NULL;
1587 #ifdef CONFIG_WPS_UPNP
1588         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1589 #endif /* CONFIG_WPS_UPNP */
1590         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1591         return 0;
1592 }
1593
1594
1595 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1596 {
1597         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1598         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1599 }
1600
1601
1602 struct wps_ap_pin_data {
1603         char pin_txt[9];
1604         int timeout;
1605 };
1606
1607
1608 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1609 {
1610         struct wps_ap_pin_data *data = ctx;
1611
1612         if (!hapd->wps)
1613                 return 0;
1614
1615         os_free(hapd->conf->ap_pin);
1616         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1617 #ifdef CONFIG_WPS_UPNP
1618         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1619 #endif /* CONFIG_WPS_UPNP */
1620         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1621         return 0;
1622 }
1623
1624
1625 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1626 {
1627         unsigned int pin;
1628         struct wps_ap_pin_data data;
1629
1630         if (wps_generate_pin(&pin) < 0)
1631                 return NULL;
1632         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1633         data.timeout = timeout;
1634         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1635         return hapd->conf->ap_pin;
1636 }
1637
1638
1639 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1640 {
1641         return hapd->conf->ap_pin;
1642 }
1643
1644
1645 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1646                            int timeout)
1647 {
1648         struct wps_ap_pin_data data;
1649         int ret;
1650
1651         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1652         if (os_snprintf_error(sizeof(data.pin_txt), ret))
1653                 return -1;
1654         data.timeout = timeout;
1655         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1656 }
1657
1658
1659 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1660 {
1661         if (hapd->wps)
1662                 wps_registrar_update_ie(hapd->wps->registrar);
1663         return 0;
1664 }
1665
1666
1667 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1668 {
1669         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1670 }
1671
1672
1673 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1674                           const char *auth, const char *encr, const char *key)
1675 {
1676         struct wps_credential cred;
1677         size_t len;
1678
1679         os_memset(&cred, 0, sizeof(cred));
1680
1681         len = os_strlen(ssid);
1682         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1683             hexstr2bin(ssid, cred.ssid, len / 2))
1684                 return -1;
1685         cred.ssid_len = len / 2;
1686
1687         if (os_strncmp(auth, "OPEN", 4) == 0)
1688                 cred.auth_type = WPS_AUTH_OPEN;
1689         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1690                 cred.auth_type = WPS_AUTH_WPAPSK;
1691         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1692                 cred.auth_type = WPS_AUTH_WPA2PSK;
1693         else
1694                 return -1;
1695
1696         if (encr) {
1697                 if (os_strncmp(encr, "NONE", 4) == 0)
1698                         cred.encr_type = WPS_ENCR_NONE;
1699                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1700                         cred.encr_type = WPS_ENCR_TKIP;
1701                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1702                         cred.encr_type = WPS_ENCR_AES;
1703                 else
1704                         return -1;
1705         } else
1706                 cred.encr_type = WPS_ENCR_NONE;
1707
1708         if (key) {
1709                 len = os_strlen(key);
1710                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1711                     hexstr2bin(key, cred.key, len / 2))
1712                         return -1;
1713                 cred.key_len = len / 2;
1714         }
1715
1716         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1717 }
1718
1719
1720 #ifdef CONFIG_WPS_NFC
1721
1722 struct wps_nfc_password_token_data {
1723         const u8 *oob_dev_pw;
1724         size_t oob_dev_pw_len;
1725         int added;
1726 };
1727
1728
1729 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1730 {
1731         struct wps_nfc_password_token_data *data = ctx;
1732         int ret;
1733
1734         if (hapd->wps == NULL)
1735                 return 0;
1736         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1737                                                    data->oob_dev_pw,
1738                                                    data->oob_dev_pw_len);
1739         if (ret == 0)
1740                 data->added++;
1741         return ret;
1742 }
1743
1744
1745 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1746                                               struct wps_parse_attr *attr)
1747 {
1748         struct wps_nfc_password_token_data data;
1749
1750         data.oob_dev_pw = attr->oob_dev_password;
1751         data.oob_dev_pw_len = attr->oob_dev_password_len;
1752         data.added = 0;
1753         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1754                 return -1;
1755         return data.added ? 0 : -1;
1756 }
1757
1758
1759 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1760                                        const struct wpabuf *wps)
1761 {
1762         struct wps_parse_attr attr;
1763
1764         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1765
1766         if (wps_parse_msg(wps, &attr)) {
1767                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1768                 return -1;
1769         }
1770
1771         if (attr.oob_dev_password)
1772                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1773
1774         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1775         return -1;
1776 }
1777
1778
1779 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1780                              const struct wpabuf *data)
1781 {
1782         const struct wpabuf *wps = data;
1783         struct wpabuf *tmp = NULL;
1784         int ret;
1785
1786         if (wpabuf_len(data) < 4)
1787                 return -1;
1788
1789         if (*wpabuf_head_u8(data) != 0x10) {
1790                 /* Assume this contains full NDEF record */
1791                 tmp = ndef_parse_wifi(data);
1792                 if (tmp == NULL) {
1793                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1794                         return -1;
1795                 }
1796                 wps = tmp;
1797         }
1798
1799         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1800         wpabuf_free(tmp);
1801         return ret;
1802 }
1803
1804
1805 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1806                                              int ndef)
1807 {
1808         struct wpabuf *ret;
1809
1810         if (hapd->wps == NULL)
1811                 return NULL;
1812
1813         ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd),
1814                                hapd->iconf->channel);
1815         if (ndef && ret) {
1816                 struct wpabuf *tmp;
1817                 tmp = ndef_build_wifi(ret);
1818                 wpabuf_free(ret);
1819                 if (tmp == NULL)
1820                         return NULL;
1821                 ret = tmp;
1822         }
1823
1824         return ret;
1825 }
1826
1827
1828 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1829 {
1830         struct wpabuf *ret;
1831
1832         if (hapd->wps == NULL)
1833                 return NULL;
1834
1835         if (hapd->conf->wps_nfc_dh_pubkey == NULL) {
1836                 struct wps_context *wps = hapd->wps;
1837                 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey,
1838                                    &hapd->conf->wps_nfc_dh_privkey) < 0)
1839                         return NULL;
1840                 hostapd_wps_nfc_clear(wps);
1841                 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
1842                 wps->ap_nfc_dh_pubkey =
1843                         wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1844                 wps->ap_nfc_dh_privkey =
1845                         wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1846                 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
1847                         hostapd_wps_nfc_clear(wps);
1848                         return NULL;
1849                 }
1850         }
1851
1852         ret = wps_build_nfc_handover_sel(hapd->wps,
1853                                          hapd->conf->wps_nfc_dh_pubkey,
1854                                          hapd->own_addr, hapd->iface->freq);
1855
1856         if (ndef && ret) {
1857                 struct wpabuf *tmp;
1858                 tmp = ndef_build_wifi(ret);
1859                 wpabuf_free(ret);
1860                 if (tmp == NULL)
1861                         return NULL;
1862                 ret = tmp;
1863         }
1864
1865         return ret;
1866 }
1867
1868
1869 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd,
1870                                     const struct wpabuf *req,
1871                                     const struct wpabuf *sel)
1872 {
1873         struct wpabuf *wps;
1874         int ret = -1;
1875         u16 wsc_len;
1876         const u8 *pos;
1877         struct wpabuf msg;
1878         struct wps_parse_attr attr;
1879         u16 dev_pw_id;
1880
1881         /*
1882          * Enrollee/station is always initiator of the NFC connection handover,
1883          * so use the request message here to find Enrollee public key hash.
1884          */
1885         wps = ndef_parse_wifi(req);
1886         if (wps == NULL)
1887                 return -1;
1888         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1889                    "payload from NFC connection handover");
1890         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
1891         if (wpabuf_len(wps) < 2) {
1892                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
1893                            "Message");
1894                 goto out;
1895         }
1896         pos = wpabuf_head(wps);
1897         wsc_len = WPA_GET_BE16(pos);
1898         if (wsc_len > wpabuf_len(wps) - 2) {
1899                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
1900                            "in rt Wi-Fi Handover Request Message", wsc_len);
1901                 goto out;
1902         }
1903         pos += 2;
1904
1905         wpa_hexdump(MSG_DEBUG,
1906                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
1907                     pos, wsc_len);
1908         if (wsc_len < wpabuf_len(wps) - 2) {
1909                 wpa_hexdump(MSG_DEBUG,
1910                             "WPS: Ignore extra data after WSC attributes",
1911                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
1912         }
1913
1914         wpabuf_set(&msg, pos, wsc_len);
1915         ret = wps_parse_msg(&msg, &attr);
1916         if (ret < 0) {
1917                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
1918                            "Wi-Fi Handover Request Message");
1919                 goto out;
1920         }
1921
1922         if (attr.oob_dev_password == NULL ||
1923             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
1924                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
1925                            "included in Wi-Fi Handover Request Message");
1926                 ret = -1;
1927                 goto out;
1928         }
1929
1930         if (attr.uuid_e == NULL) {
1931                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
1932                            "Handover Request Message");
1933                 ret = -1;
1934                 goto out;
1935         }
1936
1937         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
1938
1939         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
1940                     attr.oob_dev_password, attr.oob_dev_password_len);
1941         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
1942                                  WPS_OOB_PUBKEY_HASH_LEN);
1943         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
1944                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
1945                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
1946                 ret = -1;
1947                 goto out;
1948         }
1949         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
1950                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
1951
1952         ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar,
1953                                              attr.oob_dev_password,
1954                                              DEV_PW_NFC_CONNECTION_HANDOVER,
1955                                              NULL, 0, 1);
1956
1957 out:
1958         wpabuf_free(wps);
1959         return ret;
1960 }
1961
1962
1963 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1964 {
1965         if (hapd->conf->wps_nfc_pw_from_config) {
1966                 return wps_nfc_token_build(ndef,
1967                                            hapd->conf->wps_nfc_dev_pw_id,
1968                                            hapd->conf->wps_nfc_dh_pubkey,
1969                                            hapd->conf->wps_nfc_dev_pw);
1970         }
1971
1972         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1973                                  &hapd->conf->wps_nfc_dh_pubkey,
1974                                  &hapd->conf->wps_nfc_dh_privkey,
1975                                  &hapd->conf->wps_nfc_dev_pw);
1976 }
1977
1978
1979 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1980 {
1981         struct wps_context *wps = hapd->wps;
1982         struct wpabuf *pw;
1983
1984         if (wps == NULL)
1985                 return -1;
1986
1987         if (!hapd->conf->wps_nfc_dh_pubkey ||
1988             !hapd->conf->wps_nfc_dh_privkey ||
1989             !hapd->conf->wps_nfc_dev_pw ||
1990             !hapd->conf->wps_nfc_dev_pw_id)
1991                 return -1;
1992
1993         hostapd_wps_nfc_clear(wps);
1994         wpa_printf(MSG_DEBUG,
1995                    "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)",
1996                    hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps);
1997         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1998         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1999         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
2000         pw = hapd->conf->wps_nfc_dev_pw;
2001         wps->ap_nfc_dev_pw = wpabuf_alloc(
2002                 wpabuf_len(pw) * 2 + 1);
2003         if (wps->ap_nfc_dev_pw) {
2004                 wpa_snprintf_hex_uppercase(
2005                         (char *) wpabuf_put(wps->ap_nfc_dev_pw,
2006                                             wpabuf_len(pw) * 2),
2007                         wpabuf_len(pw) * 2 + 1,
2008                         wpabuf_head(pw), wpabuf_len(pw));
2009         }
2010
2011         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
2012             !wps->ap_nfc_dev_pw) {
2013                 hostapd_wps_nfc_clear(wps);
2014                 return -1;
2015         }
2016
2017         return 0;
2018 }
2019
2020
2021 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
2022 {
2023         wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s",
2024                    hapd->conf->iface);
2025         hostapd_wps_nfc_clear(hapd->wps);
2026 }
2027
2028 #endif /* CONFIG_WPS_NFC */