libeap/src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2012, 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->auth_types = cred->auth_type;
 449         hapd->wps->ap_encr_type = cred->encr_type;
 450         hapd->wps->ap_auth_type = cred->auth_type;
 451         if (cred->key_len == 0) {
 452                 os_free(hapd->wps->network_key);
 453                 hapd->wps->network_key = NULL;
 454                 hapd->wps->network_key_len = 0;
 455         } else if ((cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK)) &&
 456                    (cred->key_len < 8 || cred->key_len > 2 * PMK_LEN)) {
 457                 wpa_printf(MSG_INFO, "WPS: Invalid key length %lu for WPA/WPA2",
 458                            (unsigned long) cred->key_len);
 459                 return -1;
 460         } else {
 461                 if (hapd->wps->network_key == NULL ||
 462                     hapd->wps->network_key_len < cred->key_len) {
 463                         hapd->wps->network_key_len = 0;
 464                         os_free(hapd->wps->network_key);
 465                         hapd->wps->network_key = os_malloc(cred->key_len);
 466                         if (hapd->wps->network_key == NULL)
 467                                 return -1;
 468                 }
 469                 hapd->wps->network_key_len = cred->key_len;
 470                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 471         }
 472         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 473
 474         if (hapd->iface->config_fname == NULL)
 475                 return hapd_wps_reconfig_in_memory(hapd, cred);
 476         len = os_strlen(hapd->iface->config_fname) + 5;
 477         tmp_fname = os_malloc(len);
 478         if (tmp_fname == NULL)
 479                 return -1;
 480         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 481
 482         oconf = fopen(hapd->iface->config_fname, "r");
 483         if (oconf == NULL) {
 484                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 485                            "configuration file");
 486                 os_free(tmp_fname);
 487                 return -1;
 488         }
 489
 490         nconf = fopen(tmp_fname, "w");
 491         if (nconf == NULL) {
 492                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 493                            "configuration file");
 494                 os_free(tmp_fname);
 495                 fclose(oconf);
 496                 return -1;
 497         }
 498
 499         fprintf(nconf, "# WPS configuration - START\n");
 500
 501         fprintf(nconf, "wps_state=2\n");
 502
 503         if (is_hex(cred->ssid, cred->ssid_len)) {
 504                 fprintf(nconf, "ssid2=");
 505                 for (i = 0; i < cred->ssid_len; i++)
 506                         fprintf(nconf, "%02x", cred->ssid[i]);
 507                 fprintf(nconf, "\n");
 508         } else {
 509                 fprintf(nconf, "ssid=");
 510                 for (i = 0; i < cred->ssid_len; i++)
 511                         fputc(cred->ssid[i], nconf);
 512                 fprintf(nconf, "\n");
 513         }
 514
 515         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 516             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 517                 wpa = 3;
 518         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 519                 wpa = 2;
 520         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 521                 wpa = 1;
 522         else
 523                 wpa = 0;
 524
 525         if (wpa) {
 526                 char *prefix;
 527                 fprintf(nconf, "wpa=%d\n", wpa);
 528
 529                 fprintf(nconf, "wpa_key_mgmt=");
 530                 prefix = "";
 531                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 532                         fprintf(nconf, "WPA-EAP");
 533                         prefix = " ";
 534                 }
 535                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 536                         fprintf(nconf, "%sWPA-PSK", prefix);
 537                 fprintf(nconf, "\n");
 538
 539                 fprintf(nconf, "wpa_pairwise=");
 540                 prefix = "";
 541                 if (cred->encr_type & WPS_ENCR_AES) {
 542                         if (hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD)
 543                                 fprintf(nconf, "GCMP");
 544                         else
 545                                 fprintf(nconf, "CCMP");
 546
 547                         prefix = " ";
 548                 }
 549                 if (cred->encr_type & WPS_ENCR_TKIP) {
 550                         fprintf(nconf, "%sTKIP", prefix);
 551                 }
 552                 fprintf(nconf, "\n");
 553
 554                 if (cred->key_len >= 8 && cred->key_len < 64) {
 555                         fprintf(nconf, "wpa_passphrase=");
 556                         for (i = 0; i < cred->key_len; i++)
 557                                 fputc(cred->key[i], nconf);
 558                         fprintf(nconf, "\n");
 559                 } else if (cred->key_len == 64) {
 560                         fprintf(nconf, "wpa_psk=");
 561                         for (i = 0; i < cred->key_len; i++)
 562                                 fputc(cred->key[i], nconf);
 563                         fprintf(nconf, "\n");
 564                 } else {
 565                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 566                                    "for WPA/WPA2",
 567                                    (unsigned long) cred->key_len);
 568                 }
 569
 570                 fprintf(nconf, "auth_algs=1\n");
 571         } else {
 572                 /*
 573                  * WPS 2.0 does not allow WEP to be configured, so no need to
 574                  * process that option here either.
 575                  */
 576                 fprintf(nconf, "auth_algs=1\n");
 577         }
 578
 579         fprintf(nconf, "# WPS configuration - END\n");
 580
 581         multi_bss = 0;
 582         while (fgets(buf, sizeof(buf), oconf)) {
 583                 if (os_strncmp(buf, "bss=", 4) == 0)
 584                         multi_bss = 1;
 585                 if (!multi_bss &&
 586                     (str_starts(buf, "ssid=") ||
 587                      str_starts(buf, "ssid2=") ||
 588                      str_starts(buf, "auth_algs=") ||
 589                      str_starts(buf, "wep_default_key=") ||
 590                      str_starts(buf, "wep_key") ||
 591                      str_starts(buf, "wps_state=") ||
 592                      str_starts(buf, "wpa=") ||
 593                      str_starts(buf, "wpa_psk=") ||
 594                      str_starts(buf, "wpa_pairwise=") ||
 595                      str_starts(buf, "rsn_pairwise=") ||
 596                      str_starts(buf, "wpa_key_mgmt=") ||
 597                      str_starts(buf, "wpa_passphrase="))) {
 598                         fprintf(nconf, "#WPS# %s", buf);
 599                 } else
 600                         fprintf(nconf, "%s", buf);
 601         }
 602
 603         fclose(nconf);
 604         fclose(oconf);
 605
 606         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 607                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 608                            "configuration file: %s", strerror(errno));
 609                 os_free(tmp_fname);
 610                 return -1;
 611         }
 612
 613         os_free(tmp_fname);
 614
 615         /* Schedule configuration reload after short period of time to allow
 616          * EAP-WSC to be finished.
 617          */
 618         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 619                                NULL);
 620
 621         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 622
 623         return 0;
 624 }
 625
 626
 627 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 628 {
 629         struct hostapd_data *hapd = ctx;
 630         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 631 }
 632
 633
 634 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 635 {
 636         struct hostapd_data *hapd = eloop_data;
 637
 638         if (hapd->conf->ap_setup_locked)
 639                 return;
 640         if (hapd->ap_pin_failures_consecutive >= 10)
 641                 return;
 642
 643         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 644         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 645         hapd->wps->ap_setup_locked = 0;
 646         wps_registrar_update_ie(hapd->wps->registrar);
 647 }
 648
 649
 650 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 651 {
 652         struct wps_event_pwd_auth_fail *data = ctx;
 653
 654         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 655                 return 0;
 656
 657         /*
 658          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 659          * for some time if this happens multiple times to slow down brute
 660          * force attacks.
 661          */
 662         hapd->ap_pin_failures++;
 663         hapd->ap_pin_failures_consecutive++;
 664         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 665                    "(%u consecutive)",
 666                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 667         if (hapd->ap_pin_failures < 3)
 668                 return 0;
 669
 670         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 671         hapd->wps->ap_setup_locked = 1;
 672
 673         wps_registrar_update_ie(hapd->wps->registrar);
 674
 675         if (!hapd->conf->ap_setup_locked &&
 676             hapd->ap_pin_failures_consecutive >= 10) {
 677                 /*
 678                  * In indefinite lockdown - disable automatic AP PIN
 679                  * reenablement.
 680                  */
 681                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 682                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 683         } else if (!hapd->conf->ap_setup_locked) {
 684                 if (hapd->ap_pin_lockout_time == 0)
 685                         hapd->ap_pin_lockout_time = 60;
 686                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 687                          (hapd->ap_pin_failures % 3) == 0)
 688                         hapd->ap_pin_lockout_time *= 2;
 689
 690                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 691                            hapd->ap_pin_lockout_time);
 692                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 693                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 694                                        hostapd_wps_reenable_ap_pin, hapd,
 695                                        NULL);
 696         }
 697
 698         return 0;
 699 }
 700
 701
 702 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 703                                   struct wps_event_pwd_auth_fail *data)
 704 {
 705         /* Update WPS Status - Authentication Failure */
 706         wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
 707         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 708         hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
 709         os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
 710
 711         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 712 }
 713
 714
 715 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 716 {
 717         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 718                 return 0;
 719
 720         if (hapd->ap_pin_failures_consecutive == 0)
 721                 return 0;
 722
 723         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 724                    "- total validation failures %u (%u consecutive)",
 725                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 726         hapd->ap_pin_failures_consecutive = 0;
 727
 728         return 0;
 729 }
 730
 731
 732 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 733 {
 734         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 735 }
 736
 737
 738 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
 739 {
 740         /* Update WPS Status - PBC Overlap */
 741         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
 742 }
 743
 744
 745 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
 746 {
 747         /* Update WPS PBC Status:PBC Timeout */
 748         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
 749 }
 750
 751
 752 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
 753 {
 754         /* Update WPS PBC status - Active */
 755         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
 756 }
 757
 758
 759 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
 760 {
 761         /* Update WPS PBC status - Active */
 762         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 763 }
 764
 765
 766 static void hostapd_wps_event_success(struct hostapd_data *hapd,
 767                                       struct wps_event_success *success)
 768 {
 769         /* Update WPS status - Success */
 770         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 771         hapd->wps_stats.status = WPS_STATUS_SUCCESS;
 772         os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
 773 }
 774
 775
 776 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 777                                    struct wps_event_fail *fail)
 778 {
 779         /* Update WPS status - Failure */
 780         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 781         os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
 782
 783         hapd->wps_stats.failure_reason = fail->error_indication;
 784
 785         if (fail->error_indication > 0 &&
 786             fail->error_indication < NUM_WPS_EI_VALUES) {
 787                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 788                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 789                         fail->msg, fail->config_error, fail->error_indication,
 790                         wps_ei_str(fail->error_indication));
 791         } else {
 792                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 793                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 794                         fail->msg, fail->config_error);
 795         }
 796 }
 797
 798
 799 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 800                                  union wps_event_data *data)
 801 {
 802         struct hostapd_data *hapd = ctx;
 803
 804         switch (event) {
 805         case WPS_EV_M2D:
 806                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 807                 break;
 808         case WPS_EV_FAIL:
 809                 hostapd_wps_event_fail(hapd, &data->fail);
 810                 break;
 811         case WPS_EV_SUCCESS:
 812                 hostapd_wps_event_success(hapd, &data->success);
 813                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 814                 break;
 815         case WPS_EV_PWD_AUTH_FAIL:
 816                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 817                 break;
 818         case WPS_EV_PBC_OVERLAP:
 819                 hostapd_wps_event_pbc_overlap(hapd);
 820                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 821                 break;
 822         case WPS_EV_PBC_TIMEOUT:
 823                 hostapd_wps_event_pbc_timeout(hapd);
 824                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 825                 break;
 826         case WPS_EV_PBC_ACTIVE:
 827                 hostapd_wps_event_pbc_active(hapd);
 828                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
 829                 break;
 830         case WPS_EV_PBC_DISABLE:
 831                 hostapd_wps_event_pbc_disable(hapd);
 832                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
 833                 break;
 834         case WPS_EV_ER_AP_ADD:
 835                 break;
 836         case WPS_EV_ER_AP_REMOVE:
 837                 break;
 838         case WPS_EV_ER_ENROLLEE_ADD:
 839                 break;
 840         case WPS_EV_ER_ENROLLEE_REMOVE:
 841                 break;
 842         case WPS_EV_ER_AP_SETTINGS:
 843                 break;
 844         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 845                 break;
 846         case WPS_EV_AP_PIN_SUCCESS:
 847                 hostapd_wps_ap_pin_success(hapd);
 848                 break;
 849         }
 850         if (hapd->wps_event_cb)
 851                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 852 }
 853
 854
 855 static int hostapd_wps_rf_band_cb(void *ctx)
 856 {
 857         struct hostapd_data *hapd = ctx;
 858
 859         return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 860                 WPS_RF_50GHZ :
 861                 hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
 862                 WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 863 }
 864
 865
 866 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only)
 867 {
 868         wpabuf_free(hapd->wps_beacon_ie);
 869         hapd->wps_beacon_ie = NULL;
 870
 871         wpabuf_free(hapd->wps_probe_resp_ie);
 872         hapd->wps_probe_resp_ie = NULL;
 873
 874         if (deinit_only) {
 875                 hostapd_reset_ap_wps_ie(hapd);
 876                 return;
 877         }
 878
 879         hostapd_set_ap_wps_ie(hapd);
 880 }
 881
 882
 883 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 884 {
 885         const u8 **uuid = ctx;
 886         size_t j;
 887
 888         if (iface == NULL)
 889                 return 0;
 890         for (j = 0; j < iface->num_bss; j++) {
 891                 struct hostapd_data *hapd = iface->bss[j];
 892                 if (hapd->wps && !hapd->conf->wps_independent &&
 893                     !is_nil_uuid(hapd->wps->uuid)) {
 894                         *uuid = hapd->wps->uuid;
 895                         return 1;
 896                 }
 897         }
 898
 899         return 0;
 900 }
 901
 902
 903 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 904 {
 905         const u8 *uuid;
 906         if (iface->interfaces == NULL ||
 907             iface->interfaces->for_each_interface == NULL)
 908                 return NULL;
 909         uuid = NULL;
 910         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 911                                               &uuid);
 912         return uuid;
 913 }
 914
 915
 916 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 917 {
 918         int *count= ctx;
 919         (*count)++;
 920         return 0;
 921 }
 922
 923
 924 static int interface_count(struct hostapd_iface *iface)
 925 {
 926         int count = 0;
 927         if (iface->interfaces == NULL ||
 928             iface->interfaces->for_each_interface == NULL)
 929                 return 0;
 930         iface->interfaces->for_each_interface(iface->interfaces,
 931                                               count_interface_cb, &count);
 932         return count;
 933 }
 934
 935
 936 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 937                                       struct wps_context *wps)
 938 {
 939         int i;
 940
 941         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 942                 wpabuf_free(wps->dev.vendor_ext[i]);
 943                 wps->dev.vendor_ext[i] = NULL;
 944
 945                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 946                         continue;
 947
 948                 wps->dev.vendor_ext[i] =
 949                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 950                 if (wps->dev.vendor_ext[i] == NULL) {
 951                         while (--i >= 0)
 952                                 wpabuf_free(wps->dev.vendor_ext[i]);
 953                         return -1;
 954                 }
 955         }
 956
 957         return 0;
 958 }
 959
 960
 961 static void hostapd_free_wps(struct wps_context *wps)
 962 {
 963         int i;
 964
 965         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
 966                 wpabuf_free(wps->dev.vendor_ext[i]);
 967         wps_device_data_free(&wps->dev);
 968         os_free(wps->network_key);
 969         hostapd_wps_nfc_clear(wps);
 970         wpabuf_free(wps->dh_pubkey);
 971         wpabuf_free(wps->dh_privkey);
 972         os_free(wps);
 973 }
 974
 975
 976 int hostapd_init_wps(struct hostapd_data *hapd,
 977                      struct hostapd_bss_config *conf)
 978 {
 979         struct wps_context *wps;
 980         struct wps_registrar_config cfg;
 981
 982         if (conf->wps_state == 0) {
 983                 hostapd_wps_clear_ies(hapd, 0);
 984                 return 0;
 985         }
 986
 987         wps = os_zalloc(sizeof(*wps));
 988         if (wps == NULL)
 989                 return -1;
 990
 991         wps->cred_cb = hostapd_wps_cred_cb;
 992         wps->event_cb = hostapd_wps_event_cb;
 993         wps->rf_band_cb = hostapd_wps_rf_band_cb;
 994         wps->cb_ctx = hapd;
 995
 996         os_memset(&cfg, 0, sizeof(cfg));
 997         wps->wps_state = hapd->conf->wps_state;
 998         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 999         if (is_nil_uuid(hapd->conf->uuid)) {
1000                 const u8 *uuid;
1001                 uuid = get_own_uuid(hapd->iface);
1002                 if (uuid && !conf->wps_independent) {
1003                         os_memcpy(wps->uuid, uuid, UUID_LEN);
1004                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
1005                                     "interface", wps->uuid, UUID_LEN);
1006                 } else {
1007                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
1008                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
1009                                     "address", wps->uuid, UUID_LEN);
1010                 }
1011         } else {
1012                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
1013                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
1014                             wps->uuid, UUID_LEN);
1015         }
1016         wps->ssid_len = hapd->conf->ssid.ssid_len;
1017         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
1018         wps->ap = 1;
1019         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
1020         wps->dev.device_name = hapd->conf->device_name ?
1021                 os_strdup(hapd->conf->device_name) : NULL;
1022         wps->dev.manufacturer = hapd->conf->manufacturer ?
1023                 os_strdup(hapd->conf->manufacturer) : NULL;
1024         wps->dev.model_name = hapd->conf->model_name ?
1025                 os_strdup(hapd->conf->model_name) : NULL;
1026         wps->dev.model_number = hapd->conf->model_number ?
1027                 os_strdup(hapd->conf->model_number) : NULL;
1028         wps->dev.serial_number = hapd->conf->serial_number ?
1029                 os_strdup(hapd->conf->serial_number) : NULL;
1030         wps->config_methods =
1031                 wps_config_methods_str2bin(hapd->conf->config_methods);
1032         if ((wps->config_methods &
1033              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1034               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1035                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1036                            "virtual_display for WPS 2.0 compliance");
1037                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1038         }
1039         if ((wps->config_methods &
1040              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1041               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1042                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1043                            "virtual_push_button for WPS 2.0 compliance");
1044                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1045         }
1046         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1047                   WPS_DEV_TYPE_LEN);
1048
1049         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0)
1050                 goto fail;
1051
1052         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1053
1054         if (conf->wps_rf_bands) {
1055                 wps->dev.rf_bands = conf->wps_rf_bands;
1056         } else {
1057                 wps->dev.rf_bands =
1058                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1059                         WPS_RF_50GHZ :
1060                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211AD ?
1061                         WPS_RF_60GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1062         }
1063
1064         if (conf->wpa & WPA_PROTO_RSN) {
1065                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1066                         wps->auth_types |= WPS_AUTH_WPA2PSK;
1067                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1068                         wps->auth_types |= WPS_AUTH_WPA2;
1069
1070                 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP))
1071                         wps->encr_types |= WPS_ENCR_AES;
1072                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
1073                         wps->encr_types |= WPS_ENCR_TKIP;
1074         }
1075
1076         if (conf->wpa & WPA_PROTO_WPA) {
1077                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1078                         wps->auth_types |= WPS_AUTH_WPAPSK;
1079                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1080                         wps->auth_types |= WPS_AUTH_WPA;
1081
1082                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
1083                         wps->encr_types |= WPS_ENCR_AES;
1084                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
1085                         wps->encr_types |= WPS_ENCR_TKIP;
1086         }
1087
1088         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1089                 wps->encr_types |= WPS_ENCR_NONE;
1090                 wps->auth_types |= WPS_AUTH_OPEN;
1091         }
1092
1093         if (conf->ssid.wpa_psk_file) {
1094                 /* Use per-device PSKs */
1095         } else if (conf->ssid.wpa_passphrase) {
1096                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1097                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1098         } else if (conf->ssid.wpa_psk) {
1099                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1100                 if (wps->network_key == NULL)
1101                         goto fail;
1102                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1103                                  conf->ssid.wpa_psk->psk, PMK_LEN);
1104                 wps->network_key_len = 2 * PMK_LEN;
1105         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1106                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1107                 if (wps->network_key == NULL)
1108                         goto fail;
1109                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1110                           conf->ssid.wep.len[0]);
1111                 wps->network_key_len = conf->ssid.wep.len[0];
1112         }
1113
1114         if (conf->ssid.wpa_psk) {
1115                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1116                 wps->psk_set = 1;
1117         }
1118
1119         wps->ap_auth_type = wps->auth_types;
1120         wps->ap_encr_type = wps->encr_types;
1121         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1122                 /* Override parameters to enable security by default */
1123                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1124                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1125         }
1126
1127         wps->ap_settings = conf->ap_settings;
1128         wps->ap_settings_len = conf->ap_settings_len;
1129
1130         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1131         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1132         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1133         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1134         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1135         cfg.cb_ctx = hapd;
1136         cfg.skip_cred_build = conf->skip_cred_build;
1137         cfg.extra_cred = conf->extra_cred;
1138         cfg.extra_cred_len = conf->extra_cred_len;
1139         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1140                 conf->skip_cred_build;
1141         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1142                 cfg.static_wep_only = 1;
1143         cfg.dualband = interface_count(hapd->iface) > 1;
1144         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1145             (WPS_RF_50GHZ | WPS_RF_24GHZ))
1146                 cfg.dualband = 1;
1147         if (cfg.dualband)
1148                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1149         cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
1150
1151         wps->registrar = wps_registrar_init(wps, &cfg);
1152         if (wps->registrar == NULL) {
1153                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1154                 goto fail;
1155         }
1156
1157 #ifdef CONFIG_WPS_UPNP
1158         wps->friendly_name = hapd->conf->friendly_name;
1159         wps->manufacturer_url = hapd->conf->manufacturer_url;
1160         wps->model_description = hapd->conf->model_description;
1161         wps->model_url = hapd->conf->model_url;
1162         wps->upc = hapd->conf->upc;
1163 #endif /* CONFIG_WPS_UPNP */
1164
1165         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1166
1167         hapd->wps = wps;
1168
1169         return 0;
1170
1171 fail:
1172         hostapd_free_wps(wps);
1173         return -1;
1174 }
1175
1176
1177 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1178 {
1179         struct wps_context *wps = hapd->wps;
1180
1181         if (wps == NULL)
1182                 return 0;
1183
1184 #ifdef CONFIG_WPS_UPNP
1185         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1186                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1187                 wps_registrar_deinit(wps->registrar);
1188                 hostapd_free_wps(wps);
1189                 hapd->wps = NULL;
1190                 return -1;
1191         }
1192 #endif /* CONFIG_WPS_UPNP */
1193
1194         return 0;
1195 }
1196
1197
1198 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1199 {
1200 #ifdef CONFIG_WPS_NFC
1201         wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps);
1202         wps->ap_nfc_dev_pw_id = 0;
1203         wpabuf_free(wps->ap_nfc_dh_pubkey);
1204         wps->ap_nfc_dh_pubkey = NULL;
1205         wpabuf_free(wps->ap_nfc_dh_privkey);
1206         wps->ap_nfc_dh_privkey = NULL;
1207         wpabuf_free(wps->ap_nfc_dev_pw);
1208         wps->ap_nfc_dev_pw = NULL;
1209 #endif /* CONFIG_WPS_NFC */
1210 }
1211
1212
1213 void hostapd_deinit_wps(struct hostapd_data *hapd)
1214 {
1215         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1216         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1217         eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL);
1218         if (hapd->wps == NULL) {
1219                 hostapd_wps_clear_ies(hapd, 1);
1220                 return;
1221         }
1222 #ifdef CONFIG_WPS_UPNP
1223         hostapd_wps_upnp_deinit(hapd);
1224 #endif /* CONFIG_WPS_UPNP */
1225         wps_registrar_deinit(hapd->wps->registrar);
1226         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1227         hostapd_free_wps(hapd->wps);
1228         hapd->wps = NULL;
1229         hostapd_wps_clear_ies(hapd, 1);
1230 }
1231
1232
1233 void hostapd_update_wps(struct hostapd_data *hapd)
1234 {
1235         if (hapd->wps == NULL)
1236                 return;
1237
1238 #ifdef CONFIG_WPS_UPNP
1239         hapd->wps->friendly_name = hapd->conf->friendly_name;
1240         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1241         hapd->wps->model_description = hapd->conf->model_description;
1242         hapd->wps->model_url = hapd->conf->model_url;
1243         hapd->wps->upc = hapd->conf->upc;
1244 #endif /* CONFIG_WPS_UPNP */
1245
1246         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1247
1248         if (hapd->conf->wps_state)
1249                 wps_registrar_update_ie(hapd->wps->registrar);
1250         else
1251                 hostapd_deinit_wps(hapd);
1252 }
1253
1254
1255 struct wps_add_pin_data {
1256         const u8 *addr;
1257         const u8 *uuid;
1258         const u8 *pin;
1259         size_t pin_len;
1260         int timeout;
1261         int added;
1262 };
1263
1264
1265 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1266 {
1267         struct wps_add_pin_data *data = ctx;
1268         int ret;
1269
1270         if (hapd->wps == NULL)
1271                 return 0;
1272         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1273                                     data->uuid, data->pin, data->pin_len,
1274                                     data->timeout);
1275         if (ret == 0)
1276                 data->added++;
1277         return ret;
1278 }
1279
1280
1281 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1282                         const char *uuid, const char *pin, int timeout)
1283 {
1284         u8 u[UUID_LEN];
1285         struct wps_add_pin_data data;
1286
1287         data.addr = addr;
1288         data.uuid = u;
1289         data.pin = (const u8 *) pin;
1290         data.pin_len = os_strlen(pin);
1291         data.timeout = timeout;
1292         data.added = 0;
1293
1294         if (os_strcmp(uuid, "any") == 0)
1295                 data.uuid = NULL;
1296         else {
1297                 if (uuid_str2bin(uuid, u))
1298                         return -1;
1299                 data.uuid = u;
1300         }
1301         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1302                 return -1;
1303         return data.added ? 0 : -1;
1304 }
1305
1306
1307 struct wps_button_pushed_ctx {
1308         const u8 *p2p_dev_addr;
1309         unsigned int count;
1310 };
1311
1312 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1313 {
1314         struct wps_button_pushed_ctx *data = ctx;
1315
1316         if (hapd->wps) {
1317                 data->count++;
1318                 return wps_registrar_button_pushed(hapd->wps->registrar,
1319                                                    data->p2p_dev_addr);
1320         }
1321
1322         return 0;
1323 }
1324
1325
1326 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1327                               const u8 *p2p_dev_addr)
1328 {
1329         struct wps_button_pushed_ctx ctx;
1330         int ret;
1331
1332         os_memset(&ctx, 0, sizeof(ctx));
1333         ctx.p2p_dev_addr = p2p_dev_addr;
1334         ret = hostapd_wps_for_each(hapd, wps_button_pushed, &ctx);
1335         if (ret == 0 && !ctx.count)
1336                 ret = -1;
1337         return ret;
1338 }
1339
1340
1341 struct wps_cancel_ctx {
1342         unsigned int count;
1343 };
1344
1345 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1346 {
1347         struct wps_cancel_ctx *data = ctx;
1348
1349         if (hapd->wps) {
1350                 data->count++;
1351                 wps_registrar_wps_cancel(hapd->wps->registrar);
1352                 ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1353         }
1354
1355         return 0;
1356 }
1357
1358
1359 int hostapd_wps_cancel(struct hostapd_data *hapd)
1360 {
1361         struct wps_cancel_ctx ctx;
1362         int ret;
1363
1364         os_memset(&ctx, 0, sizeof(ctx));
1365         ret = hostapd_wps_for_each(hapd, wps_cancel, &ctx);
1366         if (ret == 0 && !ctx.count)
1367                 ret = -1;
1368         return ret;
1369 }
1370
1371
1372 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1373                                     const u8 *bssid,
1374                                     const u8 *ie, size_t ie_len,
1375                                     int ssi_signal)
1376 {
1377         struct hostapd_data *hapd = ctx;
1378         struct wpabuf *wps_ie;
1379         struct ieee802_11_elems elems;
1380
1381         if (hapd->wps == NULL)
1382                 return 0;
1383
1384         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1385                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1386                            MACSTR, MAC2STR(addr));
1387                 return 0;
1388         }
1389
1390         if (elems.ssid && elems.ssid_len > 0 &&
1391             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1392              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1393              0))
1394                 return 0; /* Not for us */
1395
1396         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1397         if (wps_ie == NULL)
1398                 return 0;
1399         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1400                 wpabuf_free(wps_ie);
1401                 return 0;
1402         }
1403
1404         if (wpabuf_len(wps_ie) > 0) {
1405                 int p2p_wildcard = 0;
1406 #ifdef CONFIG_P2P
1407                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1408                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1409                               P2P_WILDCARD_SSID_LEN) == 0)
1410                         p2p_wildcard = 1;
1411 #endif /* CONFIG_P2P */
1412                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1413                                            p2p_wildcard);
1414 #ifdef CONFIG_WPS_UPNP
1415                 /* FIX: what exactly should be included in the WLANEvent?
1416                  * WPS attributes? Full ProbeReq frame? */
1417                 if (!p2p_wildcard)
1418                         upnp_wps_device_send_wlan_event(
1419                                 hapd->wps_upnp, addr,
1420                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1421 #endif /* CONFIG_WPS_UPNP */
1422         }
1423
1424         wpabuf_free(wps_ie);
1425
1426         return 0;
1427 }
1428
1429
1430 #ifdef CONFIG_WPS_UPNP
1431
1432 static int hostapd_rx_req_put_wlan_response(
1433         void *priv, enum upnp_wps_wlanevent_type ev_type,
1434         const u8 *mac_addr, const struct wpabuf *msg,
1435         enum wps_msg_type msg_type)
1436 {
1437         struct hostapd_data *hapd = priv;
1438         struct sta_info *sta;
1439         struct upnp_pending_message *p;
1440
1441         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1442                    MACSTR, ev_type, MAC2STR(mac_addr));
1443         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1444                     wpabuf_head(msg), wpabuf_len(msg));
1445         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1446                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1447                            "PutWLANResponse WLANEventType %d", ev_type);
1448                 return -1;
1449         }
1450
1451         /*
1452          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1453          * server implementation for delivery to the peer.
1454          */
1455
1456         sta = ap_get_sta(hapd, mac_addr);
1457 #ifndef CONFIG_WPS_STRICT
1458         if (!sta) {
1459                 /*
1460                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1461                  * Pick STA that is in an ongoing WPS registration without
1462                  * checking the MAC address.
1463                  */
1464                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1465                            "on NewWLANEventMAC; try wildcard match");
1466                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1467                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1468                                 break;
1469                 }
1470         }
1471 #endif /* CONFIG_WPS_STRICT */
1472
1473         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1474                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1475                 return 0;
1476         }
1477
1478         if (!sta->eapol_sm) {
1479                 /*
1480                  * This can happen, e.g., if an ER sends an extra message after
1481                  * the station has disassociated (but not fully
1482                  * deauthenticated).
1483                  */
1484                 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized");
1485                 return 0;
1486         }
1487
1488         p = os_zalloc(sizeof(*p));
1489         if (p == NULL)
1490                 return -1;
1491         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1492         p->msg = wpabuf_dup(msg);
1493         p->type = msg_type;
1494         p->next = hapd->wps->upnp_msgs;
1495         hapd->wps->upnp_msgs = p;
1496
1497         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1498 }
1499
1500
1501 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1502                                  struct wps_context *wps)
1503 {
1504         struct upnp_wps_device_ctx *ctx;
1505
1506         if (!hapd->conf->upnp_iface)
1507                 return 0;
1508         ctx = os_zalloc(sizeof(*ctx));
1509         if (ctx == NULL)
1510                 return -1;
1511
1512         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1513         if (hapd->conf->ap_pin)
1514                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1515
1516         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1517                                               hapd->conf->upnp_iface);
1518         if (hapd->wps_upnp == NULL)
1519                 return -1;
1520         wps->wps_upnp = hapd->wps_upnp;
1521
1522         return 0;
1523 }
1524
1525
1526 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1527 {
1528         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1529 }
1530
1531 #endif /* CONFIG_WPS_UPNP */
1532
1533
1534 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1535                             char *buf, size_t buflen)
1536 {
1537         if (hapd->wps == NULL)
1538                 return 0;
1539         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1540 }
1541
1542
1543 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1544 {
1545         struct hostapd_data *hapd = eloop_data;
1546         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1547         hostapd_wps_ap_pin_disable(hapd);
1548         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1549 }
1550
1551
1552 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1553 {
1554         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1555         hapd->ap_pin_failures = 0;
1556         hapd->ap_pin_failures_consecutive = 0;
1557         hapd->conf->ap_setup_locked = 0;
1558         if (hapd->wps->ap_setup_locked) {
1559                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1560                 hapd->wps->ap_setup_locked = 0;
1561                 wps_registrar_update_ie(hapd->wps->registrar);
1562         }
1563         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1564         if (timeout > 0)
1565                 eloop_register_timeout(timeout, 0,
1566                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1567 }
1568
1569
1570 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1571 {
1572         os_free(hapd->conf->ap_pin);
1573         hapd->conf->ap_pin = NULL;
1574 #ifdef CONFIG_WPS_UPNP
1575         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1576 #endif /* CONFIG_WPS_UPNP */
1577         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1578         return 0;
1579 }
1580
1581
1582 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1583 {
1584         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1585         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1586 }
1587
1588
1589 struct wps_ap_pin_data {
1590         char pin_txt[9];
1591         int timeout;
1592 };
1593
1594
1595 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1596 {
1597         struct wps_ap_pin_data *data = ctx;
1598
1599         if (!hapd->wps)
1600                 return 0;
1601
1602         os_free(hapd->conf->ap_pin);
1603         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1604 #ifdef CONFIG_WPS_UPNP
1605         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1606 #endif /* CONFIG_WPS_UPNP */
1607         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1608         return 0;
1609 }
1610
1611
1612 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1613 {
1614         unsigned int pin;
1615         struct wps_ap_pin_data data;
1616
1617         pin = wps_generate_pin();
1618         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1619         data.timeout = timeout;
1620         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1621         return hapd->conf->ap_pin;
1622 }
1623
1624
1625 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1626 {
1627         return hapd->conf->ap_pin;
1628 }
1629
1630
1631 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1632                            int timeout)
1633 {
1634         struct wps_ap_pin_data data;
1635         int ret;
1636
1637         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1638         if (os_snprintf_error(sizeof(data.pin_txt), ret))
1639                 return -1;
1640         data.timeout = timeout;
1641         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1642 }
1643
1644
1645 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1646 {
1647         if (hapd->wps)
1648                 wps_registrar_update_ie(hapd->wps->registrar);
1649         return 0;
1650 }
1651
1652
1653 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1654 {
1655         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1656 }
1657
1658
1659 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1660                           const char *auth, const char *encr, const char *key)
1661 {
1662         struct wps_credential cred;
1663         size_t len;
1664
1665         os_memset(&cred, 0, sizeof(cred));
1666
1667         len = os_strlen(ssid);
1668         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1669             hexstr2bin(ssid, cred.ssid, len / 2))
1670                 return -1;
1671         cred.ssid_len = len / 2;
1672
1673         if (os_strncmp(auth, "OPEN", 4) == 0)
1674                 cred.auth_type = WPS_AUTH_OPEN;
1675         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1676                 cred.auth_type = WPS_AUTH_WPAPSK;
1677         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1678                 cred.auth_type = WPS_AUTH_WPA2PSK;
1679         else
1680                 return -1;
1681
1682         if (encr) {
1683                 if (os_strncmp(encr, "NONE", 4) == 0)
1684                         cred.encr_type = WPS_ENCR_NONE;
1685                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1686                         cred.encr_type = WPS_ENCR_TKIP;
1687                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1688                         cred.encr_type = WPS_ENCR_AES;
1689                 else
1690                         return -1;
1691         } else
1692                 cred.encr_type = WPS_ENCR_NONE;
1693
1694         if (key) {
1695                 len = os_strlen(key);
1696                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1697                     hexstr2bin(key, cred.key, len / 2))
1698                         return -1;
1699                 cred.key_len = len / 2;
1700         }
1701
1702         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1703 }
1704
1705
1706 #ifdef CONFIG_WPS_NFC
1707
1708 struct wps_nfc_password_token_data {
1709         const u8 *oob_dev_pw;
1710         size_t oob_dev_pw_len;
1711         int added;
1712 };
1713
1714
1715 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1716 {
1717         struct wps_nfc_password_token_data *data = ctx;
1718         int ret;
1719
1720         if (hapd->wps == NULL)
1721                 return 0;
1722         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1723                                                    data->oob_dev_pw,
1724                                                    data->oob_dev_pw_len);
1725         if (ret == 0)
1726                 data->added++;
1727         return ret;
1728 }
1729
1730
1731 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1732                                               struct wps_parse_attr *attr)
1733 {
1734         struct wps_nfc_password_token_data data;
1735
1736         data.oob_dev_pw = attr->oob_dev_password;
1737         data.oob_dev_pw_len = attr->oob_dev_password_len;
1738         data.added = 0;
1739         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1740                 return -1;
1741         return data.added ? 0 : -1;
1742 }
1743
1744
1745 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1746                                        const struct wpabuf *wps)
1747 {
1748         struct wps_parse_attr attr;
1749
1750         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1751
1752         if (wps_parse_msg(wps, &attr)) {
1753                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1754                 return -1;
1755         }
1756
1757         if (attr.oob_dev_password)
1758                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1759
1760         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1761         return -1;
1762 }
1763
1764
1765 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1766                              const struct wpabuf *data)
1767 {
1768         const struct wpabuf *wps = data;
1769         struct wpabuf *tmp = NULL;
1770         int ret;
1771
1772         if (wpabuf_len(data) < 4)
1773                 return -1;
1774
1775         if (*wpabuf_head_u8(data) != 0x10) {
1776                 /* Assume this contains full NDEF record */
1777                 tmp = ndef_parse_wifi(data);
1778                 if (tmp == NULL) {
1779                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1780                         return -1;
1781                 }
1782                 wps = tmp;
1783         }
1784
1785         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1786         wpabuf_free(tmp);
1787         return ret;
1788 }
1789
1790
1791 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1792                                              int ndef)
1793 {
1794         struct wpabuf *ret;
1795
1796         if (hapd->wps == NULL)
1797                 return NULL;
1798
1799         ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd),
1800                                hapd->iconf->channel);
1801         if (ndef && ret) {
1802                 struct wpabuf *tmp;
1803                 tmp = ndef_build_wifi(ret);
1804                 wpabuf_free(ret);
1805                 if (tmp == NULL)
1806                         return NULL;
1807                 ret = tmp;
1808         }
1809
1810         return ret;
1811 }
1812
1813
1814 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1815 {
1816         struct wpabuf *ret;
1817
1818         if (hapd->wps == NULL)
1819                 return NULL;
1820
1821         if (hapd->conf->wps_nfc_dh_pubkey == NULL) {
1822                 struct wps_context *wps = hapd->wps;
1823                 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey,
1824                                    &hapd->conf->wps_nfc_dh_privkey) < 0)
1825                         return NULL;
1826                 hostapd_wps_nfc_clear(wps);
1827                 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
1828                 wps->ap_nfc_dh_pubkey =
1829                         wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1830                 wps->ap_nfc_dh_privkey =
1831                         wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1832                 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
1833                         hostapd_wps_nfc_clear(wps);
1834                         return NULL;
1835                 }
1836         }
1837
1838         ret = wps_build_nfc_handover_sel(hapd->wps,
1839                                          hapd->conf->wps_nfc_dh_pubkey,
1840                                          hapd->own_addr, hapd->iface->freq);
1841
1842         if (ndef && ret) {
1843                 struct wpabuf *tmp;
1844                 tmp = ndef_build_wifi(ret);
1845                 wpabuf_free(ret);
1846                 if (tmp == NULL)
1847                         return NULL;
1848                 ret = tmp;
1849         }
1850
1851         return ret;
1852 }
1853
1854
1855 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd,
1856                                     const struct wpabuf *req,
1857                                     const struct wpabuf *sel)
1858 {
1859         struct wpabuf *wps;
1860         int ret = -1;
1861         u16 wsc_len;
1862         const u8 *pos;
1863         struct wpabuf msg;
1864         struct wps_parse_attr attr;
1865         u16 dev_pw_id;
1866
1867         /*
1868          * Enrollee/station is always initiator of the NFC connection handover,
1869          * so use the request message here to find Enrollee public key hash.
1870          */
1871         wps = ndef_parse_wifi(req);
1872         if (wps == NULL)
1873                 return -1;
1874         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1875                    "payload from NFC connection handover");
1876         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
1877         if (wpabuf_len(wps) < 2) {
1878                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
1879                            "Message");
1880                 goto out;
1881         }
1882         pos = wpabuf_head(wps);
1883         wsc_len = WPA_GET_BE16(pos);
1884         if (wsc_len > wpabuf_len(wps) - 2) {
1885                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
1886                            "in rt Wi-Fi Handover Request Message", wsc_len);
1887                 goto out;
1888         }
1889         pos += 2;
1890
1891         wpa_hexdump(MSG_DEBUG,
1892                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
1893                     pos, wsc_len);
1894         if (wsc_len < wpabuf_len(wps) - 2) {
1895                 wpa_hexdump(MSG_DEBUG,
1896                             "WPS: Ignore extra data after WSC attributes",
1897                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
1898         }
1899
1900         wpabuf_set(&msg, pos, wsc_len);
1901         ret = wps_parse_msg(&msg, &attr);
1902         if (ret < 0) {
1903                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
1904                            "Wi-Fi Handover Request Message");
1905                 goto out;
1906         }
1907
1908         if (attr.oob_dev_password == NULL ||
1909             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
1910                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
1911                            "included in Wi-Fi Handover Request Message");
1912                 ret = -1;
1913                 goto out;
1914         }
1915
1916         if (attr.uuid_e == NULL) {
1917                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
1918                            "Handover Request Message");
1919                 ret = -1;
1920                 goto out;
1921         }
1922
1923         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
1924
1925         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
1926                     attr.oob_dev_password, attr.oob_dev_password_len);
1927         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
1928                                  WPS_OOB_PUBKEY_HASH_LEN);
1929         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
1930                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
1931                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
1932                 ret = -1;
1933                 goto out;
1934         }
1935         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
1936                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
1937
1938         ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar,
1939                                              attr.oob_dev_password,
1940                                              DEV_PW_NFC_CONNECTION_HANDOVER,
1941                                              NULL, 0, 1);
1942
1943 out:
1944         wpabuf_free(wps);
1945         return ret;
1946 }
1947
1948
1949 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1950 {
1951         if (hapd->conf->wps_nfc_pw_from_config) {
1952                 return wps_nfc_token_build(ndef,
1953                                            hapd->conf->wps_nfc_dev_pw_id,
1954                                            hapd->conf->wps_nfc_dh_pubkey,
1955                                            hapd->conf->wps_nfc_dev_pw);
1956         }
1957
1958         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1959                                  &hapd->conf->wps_nfc_dh_pubkey,
1960                                  &hapd->conf->wps_nfc_dh_privkey,
1961                                  &hapd->conf->wps_nfc_dev_pw);
1962 }
1963
1964
1965 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1966 {
1967         struct wps_context *wps = hapd->wps;
1968         struct wpabuf *pw;
1969
1970         if (wps == NULL)
1971                 return -1;
1972
1973         if (!hapd->conf->wps_nfc_dh_pubkey ||
1974             !hapd->conf->wps_nfc_dh_privkey ||
1975             !hapd->conf->wps_nfc_dev_pw ||
1976             !hapd->conf->wps_nfc_dev_pw_id)
1977                 return -1;
1978
1979         hostapd_wps_nfc_clear(wps);
1980         wpa_printf(MSG_DEBUG,
1981                    "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)",
1982                    hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps);
1983         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1984         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1985         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1986         pw = hapd->conf->wps_nfc_dev_pw;
1987         wps->ap_nfc_dev_pw = wpabuf_alloc(
1988                 wpabuf_len(pw) * 2 + 1);
1989         if (wps->ap_nfc_dev_pw) {
1990                 wpa_snprintf_hex_uppercase(
1991                         (char *) wpabuf_put(wps->ap_nfc_dev_pw,
1992                                             wpabuf_len(pw) * 2),
1993                         wpabuf_len(pw) * 2 + 1,
1994                         wpabuf_head(pw), wpabuf_len(pw));
1995         }
1996
1997         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1998             !wps->ap_nfc_dev_pw) {
1999                 hostapd_wps_nfc_clear(wps);
2000                 return -1;
2001         }
2002
2003         return 0;
2004 }
2005
2006
2007 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
2008 {
2009         wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s",
2010                    hapd->conf->iface);
2011         hostapd_wps_nfc_clear(hapd->wps);
2012 }
2013
2014 #endif /* CONFIG_WPS_NFC */