git.maemo.org Git - wpasupplicant/blob - 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 void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 156                                        const u8 *uuid_e)
 157 {
 158         struct hostapd_data *hapd = ctx;
 159         char uuid[40];
 160         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 161                 return;
 162         wpa_msg(hapd, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 163                 MAC2STR(mac_addr), uuid);
 164 }
 165
 166
 167 static int str_starts(const char *str, const char *start)
 168 {
 169         return os_strncmp(str, start, os_strlen(start)) == 0;
 170 }
 171
 172
 173 static void wps_reload_config(void *eloop_data, void *user_ctx)
 174 {
 175         struct hostapd_iface *iface = eloop_data;
 176
 177         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 178         if (hostapd_reload_config(iface) < 0) {
 179                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 180                            "configuration");
 181         }
 182 }
 183
 184
 185 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 186 {
 187         struct hostapd_data *hapd = ctx;
 188         FILE *oconf, *nconf;
 189         size_t len, i;
 190         char *tmp_fname;
 191         char buf[1024];
 192         int multi_bss;
 193         int wpa;
 194
 195         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 196                         cred->cred_attr, cred->cred_attr_len);
 197
 198         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 199         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 200         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 201                    cred->auth_type);
 202         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 203         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 204         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 205                         cred->key, cred->key_len);
 206         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 207                    MAC2STR(cred->mac_addr));
 208
 209         if ((hapd->conf->wps_cred_processing == 1 ||
 210              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 211                 size_t blen = cred->cred_attr_len * 2 + 1;
 212                 char *buf = os_malloc(blen);
 213                 if (buf) {
 214                         wpa_snprintf_hex(buf, blen,
 215                                          cred->cred_attr, cred->cred_attr_len);
 216                         wpa_msg(hapd, MSG_INFO, "%s%s",
 217                                 WPS_EVENT_NEW_AP_SETTINGS, buf);
 218                         os_free(buf);
 219                 }
 220         } else
 221                 wpa_msg(hapd, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 222
 223         if (hapd->conf->wps_cred_processing == 1)
 224                 return 0;
 225
 226         len = os_strlen(hapd->iface->config_fname) + 5;
 227         tmp_fname = os_malloc(len);
 228         if (tmp_fname == NULL)
 229                 return -1;
 230         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 231
 232         oconf = fopen(hapd->iface->config_fname, "r");
 233         if (oconf == NULL) {
 234                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 235                            "configuration file");
 236                 os_free(tmp_fname);
 237                 return -1;
 238         }
 239
 240         nconf = fopen(tmp_fname, "w");
 241         if (nconf == NULL) {
 242                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 243                            "configuration file");
 244                 os_free(tmp_fname);
 245                 fclose(oconf);
 246                 return -1;
 247         }
 248
 249         fprintf(nconf, "# WPS configuration - START\n");
 250
 251         fprintf(nconf, "wps_state=2\n");
 252
 253         fprintf(nconf, "ssid=");
 254         for (i = 0; i < cred->ssid_len; i++)
 255                 fputc(cred->ssid[i], nconf);
 256         fprintf(nconf, "\n");
 257
 258         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 259             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 260                 wpa = 3;
 261         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 262                 wpa = 2;
 263         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 264                 wpa = 1;
 265         else
 266                 wpa = 0;
 267
 268         if (wpa) {
 269                 char *prefix;
 270                 fprintf(nconf, "wpa=%d\n", wpa);
 271
 272                 fprintf(nconf, "wpa_key_mgmt=");
 273                 prefix = "";
 274                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 275                         fprintf(nconf, "WPA-EAP");
 276                         prefix = " ";
 277                 }
 278                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 279                         fprintf(nconf, "%sWPA-PSK", prefix);
 280                 fprintf(nconf, "\n");
 281
 282                 fprintf(nconf, "wpa_pairwise=");
 283                 prefix = "";
 284                 if (cred->encr_type & WPS_ENCR_AES) {
 285                         fprintf(nconf, "CCMP");
 286                         prefix = " ";
 287                 }
 288                 if (cred->encr_type & WPS_ENCR_TKIP) {
 289                         fprintf(nconf, "%sTKIP", prefix);
 290                 }
 291                 fprintf(nconf, "\n");
 292
 293                 if (cred->key_len >= 8 && cred->key_len < 64) {
 294                         fprintf(nconf, "wpa_passphrase=");
 295                         for (i = 0; i < cred->key_len; i++)
 296                                 fputc(cred->key[i], nconf);
 297                         fprintf(nconf, "\n");
 298                 } else if (cred->key_len == 64) {
 299                         fprintf(nconf, "wpa_psk=");
 300                         for (i = 0; i < cred->key_len; i++)
 301                                 fputc(cred->key[i], nconf);
 302                         fprintf(nconf, "\n");
 303                 } else {
 304                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 305                                    "for WPA/WPA2",
 306                                    (unsigned long) cred->key_len);
 307                 }
 308
 309                 fprintf(nconf, "auth_algs=1\n");
 310         } else {
 311                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 312                     (cred->auth_type & WPS_AUTH_SHARED))
 313                         fprintf(nconf, "auth_algs=3\n");
 314                 else if (cred->auth_type & WPS_AUTH_SHARED)
 315                         fprintf(nconf, "auth_algs=2\n");
 316                 else
 317                         fprintf(nconf, "auth_algs=1\n");
 318
 319                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx < 4) {
 320                         fprintf(nconf, "wep_default_key=%d\n", cred->key_idx);
 321                         fprintf(nconf, "wep_key%d=", cred->key_idx);
 322                         if (cred->key_len != 10 && cred->key_len != 26)
 323                                 fputc('"', nconf);
 324                         for (i = 0; i < cred->key_len; i++)
 325                                 fputc(cred->key[i], nconf);
 326                         if (cred->key_len != 10 && cred->key_len != 26)
 327                                 fputc('"', nconf);
 328                         fprintf(nconf, "\n");
 329                 }
 330         }
 331
 332         fprintf(nconf, "# WPS configuration - END\n");
 333
 334         multi_bss = 0;
 335         while (fgets(buf, sizeof(buf), oconf)) {
 336                 if (os_strncmp(buf, "bss=", 4) == 0)
 337                         multi_bss = 1;
 338                 if (!multi_bss &&
 339                     (str_starts(buf, "ssid=") ||
 340                      str_starts(buf, "auth_algs=") ||
 341                      str_starts(buf, "wps_state=") ||
 342                      str_starts(buf, "wpa=") ||
 343                      str_starts(buf, "wpa_psk=") ||
 344                      str_starts(buf, "wpa_pairwise=") ||
 345                      str_starts(buf, "rsn_pairwise=") ||
 346                      str_starts(buf, "wpa_key_mgmt=") ||
 347                      str_starts(buf, "wpa_passphrase="))) {
 348                         fprintf(nconf, "#WPS# %s", buf);
 349                 } else
 350                         fprintf(nconf, "%s", buf);
 351         }
 352
 353         fclose(nconf);
 354         fclose(oconf);
 355
 356         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 357                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 358                            "configuration file: %s", strerror(errno));
 359                 os_free(tmp_fname);
 360                 return -1;
 361         }
 362
 363         os_free(tmp_fname);
 364
 365         /* Schedule configuration reload after short period of time to allow
 366          * EAP-WSC to be finished.
 367          */
 368         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 369                                NULL);
 370
 371         /* TODO: dualband AP may need to update multiple configuration files */
 372
 373         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 374
 375         return 0;
 376 }
 377
 378
 379 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 380 {
 381         os_free(hapd->wps_beacon_ie);
 382         hapd->wps_beacon_ie = NULL;
 383         hapd->wps_beacon_ie_len = 0;
 384         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 385
 386         os_free(hapd->wps_probe_resp_ie);
 387         hapd->wps_probe_resp_ie = NULL;
 388         hapd->wps_probe_resp_ie_len = 0;
 389         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 390 }
 391
 392
 393 int hostapd_init_wps(struct hostapd_data *hapd,
 394                      struct hostapd_bss_config *conf)
 395 {
 396         struct wps_context *wps;
 397         struct wps_registrar_config cfg;
 398
 399         if (conf->wps_state == 0) {
 400                 hostapd_wps_clear_ies(hapd);
 401                 return 0;
 402         }
 403
 404         wps = os_zalloc(sizeof(*wps));
 405         if (wps == NULL)
 406                 return -1;
 407
 408         wps->cred_cb = hostapd_wps_cred_cb;
 409         wps->cb_ctx = hapd;
 410
 411         os_memset(&cfg, 0, sizeof(cfg));
 412         wps->wps_state = hapd->conf->wps_state;
 413         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 414         if (is_nil_uuid(hapd->conf->uuid)) {
 415                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 416                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 417                             wps->uuid, UUID_LEN);
 418         } else
 419                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 420         wps->ssid_len = hapd->conf->ssid.ssid_len;
 421         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 422         wps->ap = 1;
 423         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 424         wps->dev.device_name = os_strdup(hapd->conf->device_name);
 425         wps->dev.manufacturer = os_strdup(hapd->conf->manufacturer);
 426         wps->dev.model_name = os_strdup(hapd->conf->model_name);
 427         wps->dev.model_number = os_strdup(hapd->conf->model_number);
 428         wps->dev.serial_number = os_strdup(hapd->conf->serial_number);
 429         if (hapd->conf->config_methods) {
 430                 char *m = hapd->conf->config_methods;
 431                 if (os_strstr(m, "label"))
 432                         wps->config_methods |= WPS_CONFIG_LABEL;
 433                 if (os_strstr(m, "display"))
 434                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 435                 if (os_strstr(m, "push_button"))
 436                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 437                 if (os_strstr(m, "keypad"))
 438                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 439         }
 440         if (hapd->conf->device_type) {
 441                 char *pos;
 442                 u8 oui[4];
 443                 /* <categ>-<OUI>-<subcateg> */
 444                 wps->dev.categ = atoi(hapd->conf->device_type);
 445                 pos = os_strchr(hapd->conf->device_type, '-');
 446                 if (pos == NULL) {
 447                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 448                         os_free(wps);
 449                         return -1;
 450                 }
 451                 pos++;
 452                 if (hexstr2bin(pos, oui, 4)) {
 453                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 454                         os_free(wps);
 455                         return -1;
 456                 }
 457                 wps->dev.oui = WPA_GET_BE32(oui);
 458                 pos = os_strchr(pos, '-');
 459                 if (pos == NULL) {
 460                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 461                         os_free(wps);
 462                         return -1;
 463                 }
 464                 pos++;
 465                 wps->dev.sub_categ = atoi(pos);
 466         }
 467         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 468         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 469                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 470
 471         if (conf->wpa & WPA_PROTO_RSN) {
 472                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 473                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 474                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 475                         wps->auth_types |= WPS_AUTH_WPA2;
 476
 477                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 478                         wps->encr_types |= WPS_ENCR_AES;
 479                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 480                         wps->encr_types |= WPS_ENCR_TKIP;
 481         }
 482
 483         if (conf->wpa & WPA_PROTO_WPA) {
 484                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 485                         wps->auth_types |= WPS_AUTH_WPAPSK;
 486                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 487                         wps->auth_types |= WPS_AUTH_WPA;
 488
 489                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 490                         wps->encr_types |= WPS_ENCR_AES;
 491                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 492                         wps->encr_types |= WPS_ENCR_TKIP;
 493         }
 494
 495         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 496                 wps->encr_types |= WPS_ENCR_NONE;
 497                 wps->auth_types |= WPS_AUTH_OPEN;
 498         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 499                 wps->encr_types |= WPS_ENCR_WEP;
 500                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 501                         wps->auth_types |= WPS_AUTH_OPEN;
 502                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 503                         wps->auth_types |= WPS_AUTH_SHARED;
 504         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 505                 wps->auth_types |= WPS_AUTH_OPEN;
 506                 if (conf->default_wep_key_len)
 507                         wps->encr_types |= WPS_ENCR_WEP;
 508                 else
 509                         wps->encr_types |= WPS_ENCR_NONE;
 510         }
 511
 512         if (conf->ssid.wpa_psk_file) {
 513                 /* Use per-device PSKs */
 514         } else if (conf->ssid.wpa_passphrase) {
 515                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 516                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 517         } else if (conf->ssid.wpa_psk) {
 518                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 519                 if (wps->network_key == NULL) {
 520                         os_free(wps);
 521                         return -1;
 522                 }
 523                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 524                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 525                 wps->network_key_len = 2 * PMK_LEN;
 526         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 527                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 528                 if (wps->network_key == NULL) {
 529                         os_free(wps);
 530                         return -1;
 531                 }
 532                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 533                           conf->ssid.wep.len[0]);
 534                 wps->network_key_len = conf->ssid.wep.len[0];
 535         }
 536
 537         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 538                 /* Override parameters to enable security by default */
 539                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 540                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 541         }
 542
 543         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 544         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 545         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 546         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 547         cfg.cb_ctx = hapd;
 548         cfg.skip_cred_build = conf->skip_cred_build;
 549         cfg.extra_cred = conf->extra_cred;
 550         cfg.extra_cred_len = conf->extra_cred_len;
 551         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 552                 conf->skip_cred_build;
 553
 554         wps->registrar = wps_registrar_init(wps, &cfg);
 555         if (wps->registrar == NULL) {
 556                 printf("Failed to initialize WPS Registrar\n");
 557                 os_free(wps->network_key);
 558                 os_free(wps);
 559                 return -1;
 560         }
 561
 562         hapd->wps = wps;
 563
 564         return 0;
 565 }
 566
 567
 568 void hostapd_deinit_wps(struct hostapd_data *hapd)
 569 {
 570         if (hapd->wps == NULL)
 571                 return;
 572         wps_registrar_deinit(hapd->wps->registrar);
 573         os_free(hapd->wps->network_key);
 574         wps_device_data_free(&hapd->wps->dev);
 575         os_free(hapd->wps);
 576         hapd->wps = NULL;
 577         hostapd_wps_clear_ies(hapd);
 578 }
 579
 580
 581 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 582                         const char *pin)
 583 {
 584         u8 u[UUID_LEN];
 585         int any = 0;
 586
 587         if (hapd->wps == NULL)
 588                 return -1;
 589         if (os_strcmp(uuid, "any") == 0)
 590                 any = 1;
 591         else if (uuid_str2bin(uuid, u))
 592                 return -1;
 593         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 594                                      (const u8 *) pin, os_strlen(pin));
 595 }
 596
 597
 598 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 599 {
 600         if (hapd->wps == NULL)
 601                 return -1;
 602         return wps_registrar_button_pushed(hapd->wps->registrar);
 603 }
 604
 605
 606 void hostapd_wps_probe_req_rx(struct hostapd_data *hapd, const u8 *addr,
 607                               const u8 *ie, size_t ie_len)
 608 {
 609         struct wpabuf *wps_ie;
 610         const u8 *end, *pos, *wps;
 611
 612         if (hapd->wps == NULL)
 613                 return;
 614
 615         pos = ie;
 616         end = ie + ie_len;
 617         wps = NULL;
 618
 619         while (pos + 1 < end) {
 620                 if (pos + 2 + pos[1] > end)
 621                         return;
 622                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 623                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA) {
 624                         wps = pos;
 625                         break;
 626                 }
 627                 pos += 2 + pos[1];
 628         }
 629
 630         if (wps == NULL)
 631                 return; /* No WPS IE in Probe Request */
 632
 633         wps_ie = wpabuf_alloc(ie_len);
 634         if (wps_ie == NULL)
 635                 return;
 636
 637         /* There may be multiple WPS IEs in the message, so need to concatenate
 638          * their WPS Data fields */
 639         while (pos + 1 < end) {
 640                 if (pos + 2 + pos[1] > end)
 641                         break;
 642                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 643                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA)
 644                         wpabuf_put_data(wps_ie, pos + 6, pos[1] - 4);
 645                 pos += 2 + pos[1];
 646         }
 647
 648         if (wpabuf_len(wps_ie) > 0)
 649                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 650
 651         wpabuf_free(wps_ie);
 652 }