vcs.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_pwd_auth_fail(struct hostapd_data *hapd,
 380                                   struct wps_event_pwd_auth_fail *data)
 381 {
 382         FILE *f;
 383
 384         if (!data->enrollee)
 385                 return;
 386
 387         /*
 388          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 389          * if this happens multiple times.
 390          */
 391         hapd->ap_pin_failures++;
 392         if (hapd->ap_pin_failures < 4)
 393                 return;
 394
 395         wpa_msg(hapd, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 396         hapd->wps->ap_setup_locked = 1;
 397
 398         wps_registrar_update_ie(hapd->wps->registrar);
 399
 400         if (hapd->conf->wps_cred_processing == 1)
 401                 return;
 402
 403         f = fopen(hapd->iface->config_fname, "a");
 404         if (f == NULL) {
 405                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 406                            "configuration file");
 407                 return;
 408         }
 409
 410         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 411         fprintf(f, "ap_setup_locked=1\n");
 412         fclose(f);
 413
 414         /* TODO: dualband AP may need to update multiple configuration files */
 415
 416         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 417 }
 418
 419
 420 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 421                                  union wps_event_data *data)
 422 {
 423         struct hostapd_data *hapd = ctx;
 424
 425         if (event == WPS_EV_PWD_AUTH_FAIL)
 426                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 427 }
 428
 429
 430 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 431 {
 432         os_free(hapd->wps_beacon_ie);
 433         hapd->wps_beacon_ie = NULL;
 434         hapd->wps_beacon_ie_len = 0;
 435         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 436
 437         os_free(hapd->wps_probe_resp_ie);
 438         hapd->wps_probe_resp_ie = NULL;
 439         hapd->wps_probe_resp_ie_len = 0;
 440         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 441 }
 442
 443
 444 int hostapd_init_wps(struct hostapd_data *hapd,
 445                      struct hostapd_bss_config *conf)
 446 {
 447         struct wps_context *wps;
 448         struct wps_registrar_config cfg;
 449
 450         if (conf->wps_state == 0) {
 451                 hostapd_wps_clear_ies(hapd);
 452                 return 0;
 453         }
 454
 455         wps = os_zalloc(sizeof(*wps));
 456         if (wps == NULL)
 457                 return -1;
 458
 459         wps->cred_cb = hostapd_wps_cred_cb;
 460         wps->event_cb = hostapd_wps_event_cb;
 461         wps->cb_ctx = hapd;
 462
 463         os_memset(&cfg, 0, sizeof(cfg));
 464         wps->wps_state = hapd->conf->wps_state;
 465         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 466         if (is_nil_uuid(hapd->conf->uuid)) {
 467                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 468                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 469                             wps->uuid, UUID_LEN);
 470         } else
 471                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 472         wps->ssid_len = hapd->conf->ssid.ssid_len;
 473         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 474         wps->ap = 1;
 475         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 476         wps->dev.device_name = hapd->conf->device_name ?
 477                 os_strdup(hapd->conf->device_name) : NULL;
 478         wps->dev.manufacturer = hapd->conf->manufacturer ?
 479                 os_strdup(hapd->conf->manufacturer) : NULL;
 480         wps->dev.model_name = hapd->conf->model_name ?
 481                 os_strdup(hapd->conf->model_name) : NULL;
 482         wps->dev.model_number = hapd->conf->model_number ?
 483                 os_strdup(hapd->conf->model_number) : NULL;
 484         wps->dev.serial_number = hapd->conf->serial_number ?
 485                 os_strdup(hapd->conf->serial_number) : NULL;
 486         if (hapd->conf->config_methods) {
 487                 char *m = hapd->conf->config_methods;
 488                 if (os_strstr(m, "label"))
 489                         wps->config_methods |= WPS_CONFIG_LABEL;
 490                 if (os_strstr(m, "display"))
 491                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 492                 if (os_strstr(m, "push_button"))
 493                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 494                 if (os_strstr(m, "keypad"))
 495                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 496         }
 497         if (hapd->conf->device_type) {
 498                 char *pos;
 499                 u8 oui[4];
 500                 /* <categ>-<OUI>-<subcateg> */
 501                 wps->dev.categ = atoi(hapd->conf->device_type);
 502                 pos = os_strchr(hapd->conf->device_type, '-');
 503                 if (pos == NULL) {
 504                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 505                         os_free(wps);
 506                         return -1;
 507                 }
 508                 pos++;
 509                 if (hexstr2bin(pos, oui, 4)) {
 510                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 511                         os_free(wps);
 512                         return -1;
 513                 }
 514                 wps->dev.oui = WPA_GET_BE32(oui);
 515                 pos = os_strchr(pos, '-');
 516                 if (pos == NULL) {
 517                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 518                         os_free(wps);
 519                         return -1;
 520                 }
 521                 pos++;
 522                 wps->dev.sub_categ = atoi(pos);
 523         }
 524         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 525         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 526                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 527
 528         if (conf->wpa & WPA_PROTO_RSN) {
 529                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 530                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 531                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 532                         wps->auth_types |= WPS_AUTH_WPA2;
 533
 534                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 535                         wps->encr_types |= WPS_ENCR_AES;
 536                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 537                         wps->encr_types |= WPS_ENCR_TKIP;
 538         }
 539
 540         if (conf->wpa & WPA_PROTO_WPA) {
 541                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 542                         wps->auth_types |= WPS_AUTH_WPAPSK;
 543                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 544                         wps->auth_types |= WPS_AUTH_WPA;
 545
 546                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 547                         wps->encr_types |= WPS_ENCR_AES;
 548                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 549                         wps->encr_types |= WPS_ENCR_TKIP;
 550         }
 551
 552         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 553                 wps->encr_types |= WPS_ENCR_NONE;
 554                 wps->auth_types |= WPS_AUTH_OPEN;
 555         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 556                 wps->encr_types |= WPS_ENCR_WEP;
 557                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 558                         wps->auth_types |= WPS_AUTH_OPEN;
 559                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 560                         wps->auth_types |= WPS_AUTH_SHARED;
 561         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 562                 wps->auth_types |= WPS_AUTH_OPEN;
 563                 if (conf->default_wep_key_len)
 564                         wps->encr_types |= WPS_ENCR_WEP;
 565                 else
 566                         wps->encr_types |= WPS_ENCR_NONE;
 567         }
 568
 569         if (conf->ssid.wpa_psk_file) {
 570                 /* Use per-device PSKs */
 571         } else if (conf->ssid.wpa_passphrase) {
 572                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 573                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 574         } else if (conf->ssid.wpa_psk) {
 575                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 576                 if (wps->network_key == NULL) {
 577                         os_free(wps);
 578                         return -1;
 579                 }
 580                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 581                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 582                 wps->network_key_len = 2 * PMK_LEN;
 583         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 584                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 585                 if (wps->network_key == NULL) {
 586                         os_free(wps);
 587                         return -1;
 588                 }
 589                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 590                           conf->ssid.wep.len[0]);
 591                 wps->network_key_len = conf->ssid.wep.len[0];
 592         }
 593
 594         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 595                 /* Override parameters to enable security by default */
 596                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 597                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 598         }
 599
 600         wps->ap_settings = conf->ap_settings;
 601         wps->ap_settings_len = conf->ap_settings_len;
 602
 603         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 604         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 605         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 606         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 607         cfg.cb_ctx = hapd;
 608         cfg.skip_cred_build = conf->skip_cred_build;
 609         cfg.extra_cred = conf->extra_cred;
 610         cfg.extra_cred_len = conf->extra_cred_len;
 611         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 612                 conf->skip_cred_build;
 613
 614         wps->registrar = wps_registrar_init(wps, &cfg);
 615         if (wps->registrar == NULL) {
 616                 printf("Failed to initialize WPS Registrar\n");
 617                 os_free(wps->network_key);
 618                 os_free(wps);
 619                 return -1;
 620         }
 621
 622         hapd->wps = wps;
 623
 624         return 0;
 625 }
 626
 627
 628 void hostapd_deinit_wps(struct hostapd_data *hapd)
 629 {
 630         if (hapd->wps == NULL)
 631                 return;
 632         wps_registrar_deinit(hapd->wps->registrar);
 633         os_free(hapd->wps->network_key);
 634         wps_device_data_free(&hapd->wps->dev);
 635         os_free(hapd->wps);
 636         hapd->wps = NULL;
 637         hostapd_wps_clear_ies(hapd);
 638 }
 639
 640
 641 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 642                         const char *pin)
 643 {
 644         u8 u[UUID_LEN];
 645         int any = 0;
 646
 647         if (hapd->wps == NULL)
 648                 return -1;
 649         if (os_strcmp(uuid, "any") == 0)
 650                 any = 1;
 651         else if (uuid_str2bin(uuid, u))
 652                 return -1;
 653         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 654                                      (const u8 *) pin, os_strlen(pin));
 655 }
 656
 657
 658 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 659 {
 660         if (hapd->wps == NULL)
 661                 return -1;
 662         return wps_registrar_button_pushed(hapd->wps->registrar);
 663 }
 664
 665
 666 void hostapd_wps_probe_req_rx(struct hostapd_data *hapd, const u8 *addr,
 667                               const u8 *ie, size_t ie_len)
 668 {
 669         struct wpabuf *wps_ie;
 670         const u8 *end, *pos, *wps;
 671
 672         if (hapd->wps == NULL)
 673                 return;
 674
 675         pos = ie;
 676         end = ie + ie_len;
 677         wps = NULL;
 678
 679         while (pos + 1 < end) {
 680                 if (pos + 2 + pos[1] > end)
 681                         return;
 682                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 683                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA) {
 684                         wps = pos;
 685                         break;
 686                 }
 687                 pos += 2 + pos[1];
 688         }
 689
 690         if (wps == NULL)
 691                 return; /* No WPS IE in Probe Request */
 692
 693         wps_ie = wpabuf_alloc(ie_len);
 694         if (wps_ie == NULL)
 695                 return;
 696
 697         /* There may be multiple WPS IEs in the message, so need to concatenate
 698          * their WPS Data fields */
 699         while (pos + 1 < end) {
 700                 if (pos + 2 + pos[1] > end)
 701                         break;
 702                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 703                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA)
 704                         wpabuf_put_data(wps_ie, pos + 6, pos[1] - 4);
 705                 pos += 2 + pos[1];
 706         }
 707
 708         if (wpabuf_len(wps_ie) > 0)
 709                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 710
 711         wpabuf_free(wps_ie);
 712 }