hostapd/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "includes.h"
  16
  17 #include "hostapd.h"
  18 #include "driver_i.h"
  19 #include "eloop.h"
  20 #include "uuid.h"
  21 #include "wpa_ctrl.h"
  22 #include "ieee802_11_defs.h"
  23 #include "wps/wps.h"
  24 #include "wps/wps_defs.h"
  25 #include "wps/wps_dev_attr.h"
  26 #include "wps_hostapd.h"
  27
  28
  29 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  30                                   size_t psk_len)
  31 {
  32         struct hostapd_data *hapd = ctx;
  33         struct hostapd_wpa_psk *p;
  34         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  35
  36         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  37                    MACSTR, MAC2STR(mac_addr));
  38         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  39
  40         if (psk_len != PMK_LEN) {
  41                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  42                            (unsigned long) psk_len);
  43                 return -1;
  44         }
  45
  46         /* Add the new PSK to runtime PSK list */
  47         p = os_zalloc(sizeof(*p));
  48         if (p == NULL)
  49                 return -1;
  50         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  51         os_memcpy(p->psk, psk, PMK_LEN);
  52
  53         p->next = ssid->wpa_psk;
  54         ssid->wpa_psk = p;
  55
  56         if (ssid->wpa_psk_file) {
  57                 FILE *f;
  58                 char hex[PMK_LEN * 2 + 1];
  59                 /* Add the new PSK to PSK list file */
  60                 f = fopen(ssid->wpa_psk_file, "a");
  61                 if (f == NULL) {
  62                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  63                                    "'%s'", ssid->wpa_psk_file);
  64                         return -1;
  65                 }
  66
  67                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  68                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  69                 fclose(f);
  70         }
  71
  72         return 0;
  73 }
  74
  75
  76 static int hostapd_wps_set_ie_cb(void *ctx, const u8 *beacon_ie,
  77                                  size_t beacon_ie_len, const u8 *probe_resp_ie,
  78                                  size_t probe_resp_ie_len)
  79 {
  80         struct hostapd_data *hapd = ctx;
  81
  82         os_free(hapd->wps_beacon_ie);
  83         if (beacon_ie_len == 0) {
  84                 hapd->wps_beacon_ie = NULL;
  85                 hapd->wps_beacon_ie_len = 0;
  86         } else {
  87                 hapd->wps_beacon_ie = os_malloc(beacon_ie_len);
  88                 if (hapd->wps_beacon_ie == NULL) {
  89                         hapd->wps_beacon_ie_len = 0;
  90                         return -1;
  91                 }
  92                 os_memcpy(hapd->wps_beacon_ie, beacon_ie, beacon_ie_len);
  93                 hapd->wps_beacon_ie_len = beacon_ie_len;
  94         }
  95         hostapd_set_wps_beacon_ie(hapd, hapd->wps_beacon_ie,
  96                                   hapd->wps_beacon_ie_len);
  97
  98         os_free(hapd->wps_probe_resp_ie);
  99         if (probe_resp_ie_len == 0) {
 100                 hapd->wps_probe_resp_ie = NULL;
 101                 hapd->wps_probe_resp_ie_len = 0;
 102         } else {
 103                 hapd->wps_probe_resp_ie = os_malloc(probe_resp_ie_len);
 104                 if (hapd->wps_probe_resp_ie == NULL) {
 105                         hapd->wps_probe_resp_ie_len = 0;
 106                         return -1;
 107                 }
 108                 os_memcpy(hapd->wps_probe_resp_ie, probe_resp_ie,
 109                           probe_resp_ie_len);
 110                 hapd->wps_probe_resp_ie_len = probe_resp_ie_len;
 111         }
 112         hostapd_set_wps_probe_resp_ie(hapd, hapd->wps_probe_resp_ie,
 113                                       hapd->wps_probe_resp_ie_len);
 114
 115         return 0;
 116 }
 117
 118
 119 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 120                                       const struct wps_device_data *dev)
 121 {
 122         struct hostapd_data *hapd = ctx;
 123         char uuid[40], txt[400];
 124         int len;
 125         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 126                 return;
 127         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 128         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 129                           "%s " MACSTR " [%s|%s|%s|%s|%s|%d-%08X-%d]",
 130                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 131                           dev->manufacturer, dev->model_name,
 132                           dev->model_number, dev->serial_number,
 133                           dev->categ, dev->oui, dev->sub_categ);
 134         if (len > 0 && len < (int) sizeof(txt))
 135                 wpa_msg(hapd, MSG_INFO, "%s", txt);
 136
 137         if (hapd->conf->wps_pin_requests) {
 138                 FILE *f;
 139                 struct os_time t;
 140                 f = fopen(hapd->conf->wps_pin_requests, "a");
 141                 if (f == NULL)
 142                         return;
 143                 os_get_time(&t);
 144                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 145                         "\t%d-%08X-%d\n",
 146                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 147                         dev->manufacturer, dev->model_name, dev->model_number,
 148                         dev->serial_number,
 149                         dev->categ, dev->oui, dev->sub_categ);
 150                 fclose(f);
 151         }
 152 }
 153
 154
 155 static int str_starts(const char *str, const char *start)
 156 {
 157         return os_strncmp(str, start, os_strlen(start)) == 0;
 158 }
 159
 160
 161 static void wps_reload_config(void *eloop_data, void *user_ctx)
 162 {
 163         struct hostapd_iface *iface = eloop_data;
 164
 165         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 166         if (hostapd_reload_config(iface) < 0) {
 167                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 168                            "configuration");
 169         }
 170 }
 171
 172
 173 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 174 {
 175         struct hostapd_data *hapd = ctx;
 176         FILE *oconf, *nconf;
 177         size_t len, i;
 178         char *tmp_fname;
 179         char buf[1024];
 180         int multi_bss;
 181         int wpa;
 182
 183         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 184                         cred->cred_attr, cred->cred_attr_len);
 185
 186         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 187         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 188         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 189                    cred->auth_type);
 190         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 191         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 192         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 193                         cred->key, cred->key_len);
 194         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 195                    MAC2STR(cred->mac_addr));
 196
 197         wpa_msg(hapd, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 198
 199         len = os_strlen(hapd->iface->config_fname) + 5;
 200         tmp_fname = os_malloc(len);
 201         if (tmp_fname == NULL)
 202                 return -1;
 203         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 204
 205         oconf = fopen(hapd->iface->config_fname, "r");
 206         if (oconf == NULL) {
 207                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 208                            "configuration file");
 209                 os_free(tmp_fname);
 210                 return -1;
 211         }
 212
 213         nconf = fopen(tmp_fname, "w");
 214         if (nconf == NULL) {
 215                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 216                            "configuration file");
 217                 os_free(tmp_fname);
 218                 fclose(oconf);
 219                 return -1;
 220         }
 221
 222         fprintf(nconf, "# WPS configuration - START\n");
 223
 224         fprintf(nconf, "wps_state=2\n");
 225
 226         fprintf(nconf, "ssid=");
 227         for (i = 0; i < cred->ssid_len; i++)
 228                 fputc(cred->ssid[i], nconf);
 229         fprintf(nconf, "\n");
 230
 231         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 232             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 233                 wpa = 3;
 234         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 235                 wpa = 2;
 236         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 237                 wpa = 1;
 238         else
 239                 wpa = 0;
 240
 241         if (wpa) {
 242                 char *prefix;
 243                 fprintf(nconf, "wpa=%d\n", wpa);
 244
 245                 fprintf(nconf, "wpa_key_mgmt=");
 246                 prefix = "";
 247                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 248                         fprintf(nconf, "WPA-EAP");
 249                         prefix = " ";
 250                 }
 251                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 252                         fprintf(nconf, "%sWPA-PSK", prefix);
 253                 fprintf(nconf, "\n");
 254
 255                 fprintf(nconf, "wpa_pairwise=");
 256                 prefix = "";
 257                 if (cred->encr_type & WPS_ENCR_AES) {
 258                         fprintf(nconf, "CCMP");
 259                         prefix = " ";
 260                 }
 261                 if (cred->encr_type & WPS_ENCR_TKIP) {
 262                         fprintf(nconf, "%sTKIP", prefix);
 263                 }
 264                 fprintf(nconf, "\n");
 265
 266                 if (cred->key_len >= 8 && cred->key_len < 64) {
 267                         fprintf(nconf, "wpa_passphrase=");
 268                         for (i = 0; i < cred->key_len; i++)
 269                                 fputc(cred->key[i], nconf);
 270                         fprintf(nconf, "\n");
 271                 } else if (cred->key_len == 64) {
 272                         fprintf(nconf, "wpa_psk=");
 273                         for (i = 0; i < cred->key_len; i++)
 274                                 fputc(cred->key[i], nconf);
 275                         fprintf(nconf, "\n");
 276                 } else {
 277                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 278                                    "for WPA/WPA2",
 279                                    (unsigned long) cred->key_len);
 280                 }
 281
 282                 fprintf(nconf, "auth_algs=1\n");
 283         } else {
 284                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 285                     (cred->auth_type & WPS_AUTH_SHARED))
 286                         fprintf(nconf, "auth_algs=3\n");
 287                 else if (cred->auth_type & WPS_AUTH_SHARED)
 288                         fprintf(nconf, "auth_algs=2\n");
 289                 else
 290                         fprintf(nconf, "auth_algs=1\n");
 291
 292                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx < 4) {
 293                         fprintf(nconf, "wep_default_key=%d\n", cred->key_idx);
 294                         fprintf(nconf, "wep_key%d=", cred->key_idx);
 295                         if (cred->key_len != 10 && cred->key_len != 26)
 296                                 fputc('"', nconf);
 297                         for (i = 0; i < cred->key_len; i++)
 298                                 fputc(cred->key[i], nconf);
 299                         if (cred->key_len != 10 && cred->key_len != 26)
 300                                 fputc('"', nconf);
 301                         fprintf(nconf, "\n");
 302                 }
 303         }
 304
 305         fprintf(nconf, "# WPS configuration - END\n");
 306
 307         multi_bss = 0;
 308         while (fgets(buf, sizeof(buf), oconf)) {
 309                 if (os_strncmp(buf, "bss=", 4) == 0)
 310                         multi_bss = 1;
 311                 if (!multi_bss &&
 312                     (str_starts(buf, "ssid=") ||
 313                      str_starts(buf, "auth_algs=") ||
 314                      str_starts(buf, "wps_state=") ||
 315                      str_starts(buf, "wpa=") ||
 316                      str_starts(buf, "wpa_psk=") ||
 317                      str_starts(buf, "wpa_pairwise=") ||
 318                      str_starts(buf, "rsn_pairwise=") ||
 319                      str_starts(buf, "wpa_key_mgmt=") ||
 320                      str_starts(buf, "wpa_passphrase="))) {
 321                         fprintf(nconf, "#WPS# %s", buf);
 322                 } else
 323                         fprintf(nconf, "%s", buf);
 324         }
 325
 326         fclose(nconf);
 327         fclose(oconf);
 328
 329         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 330                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 331                            "configuration file: %s", strerror(errno));
 332                 os_free(tmp_fname);
 333                 return -1;
 334         }
 335
 336         os_free(tmp_fname);
 337
 338         /* Schedule configuration reload after short period of time to allow
 339          * EAP-WSC to be finished.
 340          */
 341         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 342                                NULL);
 343
 344         /* TODO: dualband AP may need to update multiple configuration files */
 345
 346         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 347
 348         return 0;
 349 }
 350
 351
 352 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 353 {
 354         os_free(hapd->wps_beacon_ie);
 355         hapd->wps_beacon_ie = NULL;
 356         hapd->wps_beacon_ie_len = 0;
 357         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 358
 359         os_free(hapd->wps_probe_resp_ie);
 360         hapd->wps_probe_resp_ie = NULL;
 361         hapd->wps_probe_resp_ie_len = 0;
 362         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 363 }
 364
 365
 366 int hostapd_init_wps(struct hostapd_data *hapd,
 367                      struct hostapd_bss_config *conf)
 368 {
 369         struct wps_context *wps;
 370         struct wps_registrar_config cfg;
 371
 372         if (conf->wps_state == 0) {
 373                 hostapd_wps_clear_ies(hapd);
 374                 return 0;
 375         }
 376
 377         wps = os_zalloc(sizeof(*wps));
 378         if (wps == NULL)
 379                 return -1;
 380
 381         wps->cred_cb = hostapd_wps_cred_cb;
 382         wps->cb_ctx = hapd;
 383
 384         os_memset(&cfg, 0, sizeof(cfg));
 385         wps->wps_state = hapd->conf->wps_state;
 386         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 387         if (is_nil_uuid(hapd->conf->uuid)) {
 388                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 389                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 390                             wps->uuid, UUID_LEN);
 391         } else
 392                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 393         wps->ssid_len = hapd->conf->ssid.ssid_len;
 394         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 395         wps->ap = 1;
 396         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 397         wps->dev.device_name = os_strdup(hapd->conf->device_name);
 398         wps->dev.manufacturer = os_strdup(hapd->conf->manufacturer);
 399         wps->dev.model_name = os_strdup(hapd->conf->model_name);
 400         wps->dev.model_number = os_strdup(hapd->conf->model_number);
 401         wps->dev.serial_number = os_strdup(hapd->conf->serial_number);
 402         if (hapd->conf->config_methods) {
 403                 char *m = hapd->conf->config_methods;
 404                 if (os_strstr(m, "label"))
 405                         wps->config_methods |= WPS_CONFIG_LABEL;
 406                 if (os_strstr(m, "display"))
 407                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 408                 if (os_strstr(m, "push_button"))
 409                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 410                 if (os_strstr(m, "keypad"))
 411                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 412         }
 413         if (hapd->conf->device_type) {
 414                 char *pos;
 415                 u8 oui[4];
 416                 /* <categ>-<OUI>-<subcateg> */
 417                 wps->dev.categ = atoi(hapd->conf->device_type);
 418                 pos = os_strchr(hapd->conf->device_type, '-');
 419                 if (pos == NULL) {
 420                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 421                         os_free(wps);
 422                         return -1;
 423                 }
 424                 pos++;
 425                 if (hexstr2bin(pos, oui, 4)) {
 426                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 427                         os_free(wps);
 428                         return -1;
 429                 }
 430                 wps->dev.oui = WPA_GET_BE32(oui);
 431                 pos = os_strchr(pos, '-');
 432                 if (pos == NULL) {
 433                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 434                         os_free(wps);
 435                         return -1;
 436                 }
 437                 pos++;
 438                 wps->dev.sub_categ = atoi(pos);
 439         }
 440         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 441         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 442                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 443
 444         if (conf->wpa & WPA_PROTO_RSN) {
 445                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 446                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 447                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 448                         wps->auth_types |= WPS_AUTH_WPA2;
 449
 450                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 451                         wps->encr_types |= WPS_ENCR_AES;
 452                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 453                         wps->encr_types |= WPS_ENCR_TKIP;
 454         }
 455
 456         if (conf->wpa & WPA_PROTO_WPA) {
 457                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 458                         wps->auth_types |= WPS_AUTH_WPAPSK;
 459                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 460                         wps->auth_types |= WPS_AUTH_WPA;
 461
 462                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 463                         wps->encr_types |= WPS_ENCR_AES;
 464                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 465                         wps->encr_types |= WPS_ENCR_TKIP;
 466         }
 467
 468         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 469                 wps->encr_types |= WPS_ENCR_NONE;
 470                 wps->auth_types |= WPS_AUTH_OPEN;
 471         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 472                 wps->encr_types |= WPS_ENCR_WEP;
 473                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 474                         wps->auth_types |= WPS_AUTH_OPEN;
 475                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 476                         wps->auth_types |= WPS_AUTH_SHARED;
 477         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 478                 wps->auth_types |= WPS_AUTH_OPEN;
 479                 if (conf->default_wep_key_len)
 480                         wps->encr_types |= WPS_ENCR_WEP;
 481                 else
 482                         wps->encr_types |= WPS_ENCR_NONE;
 483         }
 484
 485         if (conf->ssid.wpa_psk_file) {
 486                 /* Use per-device PSKs */
 487         } else if (conf->ssid.wpa_passphrase) {
 488                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 489                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 490         } else if (conf->ssid.wpa_psk) {
 491                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 492                 if (wps->network_key == NULL) {
 493                         os_free(wps);
 494                         return -1;
 495                 }
 496                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 497                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 498                 wps->network_key_len = 2 * PMK_LEN;
 499         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 500                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 501                 if (wps->network_key == NULL) {
 502                         os_free(wps);
 503                         return -1;
 504                 }
 505                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 506                           conf->ssid.wep.len[0]);
 507                 wps->network_key_len = conf->ssid.wep.len[0];
 508         }
 509
 510         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 511                 /* Override parameters to enable security by default */
 512                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 513                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 514         }
 515
 516         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 517         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 518         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 519         cfg.cb_ctx = hapd;
 520         cfg.skip_cred_build = conf->skip_cred_build;
 521         cfg.extra_cred = conf->extra_cred;
 522         cfg.extra_cred_len = conf->extra_cred_len;
 523
 524         wps->registrar = wps_registrar_init(wps, &cfg);
 525         if (wps->registrar == NULL) {
 526                 printf("Failed to initialize WPS Registrar\n");
 527                 os_free(wps->network_key);
 528                 os_free(wps);
 529                 return -1;
 530         }
 531
 532         hapd->wps = wps;
 533
 534         return 0;
 535 }
 536
 537
 538 void hostapd_deinit_wps(struct hostapd_data *hapd)
 539 {
 540         if (hapd->wps == NULL)
 541                 return;
 542         wps_registrar_deinit(hapd->wps->registrar);
 543         os_free(hapd->wps->network_key);
 544         wps_device_data_free(&hapd->wps->dev);
 545         os_free(hapd->wps);
 546         hapd->wps = NULL;
 547         hostapd_wps_clear_ies(hapd);
 548 }
 549
 550
 551 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 552                         const char *pin)
 553 {
 554         u8 u[UUID_LEN];
 555         int any = 0;
 556
 557         if (hapd->wps == NULL)
 558                 return -1;
 559         if (os_strcmp(uuid, "any") == 0)
 560                 any = 1;
 561         else if (uuid_str2bin(uuid, u))
 562                 return -1;
 563         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 564                                      (const u8 *) pin, os_strlen(pin));
 565 }
 566
 567
 568 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 569 {
 570         if (hapd->wps == NULL)
 571                 return -1;
 572         return wps_registrar_button_pushed(hapd->wps->registrar);
 573 }
 574
 575
 576 void hostapd_wps_probe_req_rx(struct hostapd_data *hapd, const u8 *addr,
 577                               const u8 *ie, size_t ie_len)
 578 {
 579         struct wpabuf *wps_ie;
 580         const u8 *end, *pos, *wps;
 581
 582         if (hapd->wps == NULL)
 583                 return;
 584
 585         pos = ie;
 586         end = ie + ie_len;
 587         wps = NULL;
 588
 589         while (pos + 1 < end) {
 590                 if (pos + 2 + pos[1] > end)
 591                         return;
 592                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 593                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA) {
 594                         wps = pos;
 595                         break;
 596                 }
 597                 pos += 2 + pos[1];
 598         }
 599
 600         if (wps == NULL)
 601                 return; /* No WPS IE in Probe Request */
 602
 603         wps_ie = wpabuf_alloc(ie_len);
 604         if (wps_ie == NULL)
 605                 return;
 606
 607         /* There may be multiple WPS IEs in the message, so need to concatenate
 608          * their WPS Data fields */
 609         while (pos + 1 < end) {
 610                 if (pos + 2 + pos[1] > end)
 611                         break;
 612                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 613                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA)
 614                         wpabuf_put_data(wps_ie, pos + 6, pos[1] - 4);
 615                 pos += 2 + pos[1];
 616         }
 617
 618         if (wpabuf_len(wps_ie) > 0)
 619                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 620
 621         wpabuf_free(wps_ie);
 622 }