src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2009, 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 "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "utils/eloop.h"
  19 #include "utils/uuid.h"
  20 #include "crypto/dh_groups.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/ieee802_11_common.h"
  24 #include "eapol_auth/eapol_auth_sm.h"
  25 #include "eapol_auth/eapol_auth_sm_i.h"
  26 #include "wps/wps.h"
  27 #include "wps/wps_defs.h"
  28 #include "wps/wps_dev_attr.h"
  29 #include "hostapd.h"
  30 #include "ap_config.h"
  31 #include "sta_info.h"
  32 #include "wps_hostapd.h"
  33
  34
  35 #ifdef CONFIG_WPS_UPNP
  36 #include "wps/wps_upnp.h"
  37 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  38                                  struct wps_context *wps);
  39 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  40 #endif /* CONFIG_WPS_UPNP */
  41
  42 static void hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
  43                                      const u8 *ie, size_t ie_len);
  44
  45
  46 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  47                                   size_t psk_len)
  48 {
  49         struct hostapd_data *hapd = ctx;
  50         struct hostapd_wpa_psk *p;
  51         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  52
  53         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  54                    MACSTR, MAC2STR(mac_addr));
  55         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  56
  57         if (psk_len != PMK_LEN) {
  58                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  59                            (unsigned long) psk_len);
  60                 return -1;
  61         }
  62
  63         /* Add the new PSK to runtime PSK list */
  64         p = os_zalloc(sizeof(*p));
  65         if (p == NULL)
  66                 return -1;
  67         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  68         os_memcpy(p->psk, psk, PMK_LEN);
  69
  70         p->next = ssid->wpa_psk;
  71         ssid->wpa_psk = p;
  72
  73         if (ssid->wpa_psk_file) {
  74                 FILE *f;
  75                 char hex[PMK_LEN * 2 + 1];
  76                 /* Add the new PSK to PSK list file */
  77                 f = fopen(ssid->wpa_psk_file, "a");
  78                 if (f == NULL) {
  79                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  80                                    "'%s'", ssid->wpa_psk_file);
  81                         return -1;
  82                 }
  83
  84                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  85                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  86                 fclose(f);
  87         }
  88
  89         return 0;
  90 }
  91
  92
  93 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
  94                                  struct wpabuf *probe_resp_ie)
  95 {
  96         struct hostapd_data *hapd = ctx;
  97         wpabuf_free(hapd->wps_beacon_ie);
  98         hapd->wps_beacon_ie = beacon_ie;
  99         wpabuf_free(hapd->wps_probe_resp_ie);
 100         hapd->wps_probe_resp_ie = probe_resp_ie;
 101         return hapd->drv.set_ap_wps_ie(hapd, hapd->wps_beacon_ie,
 102                                        hapd->wps_probe_resp_ie);
 103 }
 104
 105
 106 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 107                                       const struct wps_device_data *dev)
 108 {
 109         struct hostapd_data *hapd = ctx;
 110         char uuid[40], txt[400];
 111         int len;
 112         char devtype[WPS_DEV_TYPE_BUFSIZE];
 113         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 114                 return;
 115         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 116         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 117                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 118                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 119                           dev->manufacturer, dev->model_name,
 120                           dev->model_number, dev->serial_number,
 121                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 122                                                sizeof(devtype)));
 123         if (len > 0 && len < (int) sizeof(txt))
 124                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 125
 126         if (hapd->conf->wps_pin_requests) {
 127                 FILE *f;
 128                 struct os_time t;
 129                 f = fopen(hapd->conf->wps_pin_requests, "a");
 130                 if (f == NULL)
 131                         return;
 132                 os_get_time(&t);
 133                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 134                         "\t%s\n",
 135                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 136                         dev->manufacturer, dev->model_name, dev->model_number,
 137                         dev->serial_number,
 138                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 139                                              sizeof(devtype)));
 140                 fclose(f);
 141         }
 142 }
 143
 144
 145 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 146                                        const u8 *uuid_e)
 147 {
 148         struct hostapd_data *hapd = ctx;
 149         char uuid[40];
 150         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 151                 return;
 152         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 153                 MAC2STR(mac_addr), uuid);
 154 }
 155
 156
 157 static int str_starts(const char *str, const char *start)
 158 {
 159         return os_strncmp(str, start, os_strlen(start)) == 0;
 160 }
 161
 162
 163 static void wps_reload_config(void *eloop_data, void *user_ctx)
 164 {
 165         struct hostapd_iface *iface = eloop_data;
 166
 167         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 168         if (iface->reload_config(iface) < 0) {
 169                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 170                            "configuration");
 171         }
 172 }
 173
 174
 175 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 176 {
 177         struct hostapd_data *hapd = ctx;
 178         FILE *oconf, *nconf;
 179         size_t len, i;
 180         char *tmp_fname;
 181         char buf[1024];
 182         int multi_bss;
 183         int wpa;
 184
 185         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 186                         cred->cred_attr, cred->cred_attr_len);
 187
 188         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 189         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 190         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 191                    cred->auth_type);
 192         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 193         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 194         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 195                         cred->key, cred->key_len);
 196         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 197                    MAC2STR(cred->mac_addr));
 198
 199         if ((hapd->conf->wps_cred_processing == 1 ||
 200              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 201                 size_t blen = cred->cred_attr_len * 2 + 1;
 202                 char *_buf = os_malloc(blen);
 203                 if (_buf) {
 204                         wpa_snprintf_hex(_buf, blen,
 205                                          cred->cred_attr, cred->cred_attr_len);
 206                         wpa_msg(hapd->msg_ctx, MSG_INFO, "%s%s",
 207                                 WPS_EVENT_NEW_AP_SETTINGS, _buf);
 208                         os_free(_buf);
 209                 }
 210         } else
 211                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 212
 213         if (hapd->conf->wps_cred_processing == 1)
 214                 return 0;
 215
 216         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 217         hapd->wps->ssid_len = cred->ssid_len;
 218         hapd->wps->encr_types = cred->encr_type;
 219         hapd->wps->auth_types = cred->auth_type;
 220         if (cred->key_len == 0) {
 221                 os_free(hapd->wps->network_key);
 222                 hapd->wps->network_key = NULL;
 223                 hapd->wps->network_key_len = 0;
 224         } else {
 225                 if (hapd->wps->network_key == NULL ||
 226                     hapd->wps->network_key_len < cred->key_len) {
 227                         hapd->wps->network_key_len = 0;
 228                         os_free(hapd->wps->network_key);
 229                         hapd->wps->network_key = os_malloc(cred->key_len);
 230                         if (hapd->wps->network_key == NULL)
 231                                 return -1;
 232                 }
 233                 hapd->wps->network_key_len = cred->key_len;
 234                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 235         }
 236         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 237
 238         len = os_strlen(hapd->iface->config_fname) + 5;
 239         tmp_fname = os_malloc(len);
 240         if (tmp_fname == NULL)
 241                 return -1;
 242         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 243
 244         oconf = fopen(hapd->iface->config_fname, "r");
 245         if (oconf == NULL) {
 246                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 247                            "configuration file");
 248                 os_free(tmp_fname);
 249                 return -1;
 250         }
 251
 252         nconf = fopen(tmp_fname, "w");
 253         if (nconf == NULL) {
 254                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 255                            "configuration file");
 256                 os_free(tmp_fname);
 257                 fclose(oconf);
 258                 return -1;
 259         }
 260
 261         fprintf(nconf, "# WPS configuration - START\n");
 262
 263         fprintf(nconf, "wps_state=2\n");
 264
 265         fprintf(nconf, "ssid=");
 266         for (i = 0; i < cred->ssid_len; i++)
 267                 fputc(cred->ssid[i], nconf);
 268         fprintf(nconf, "\n");
 269
 270         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 271             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 272                 wpa = 3;
 273         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 274                 wpa = 2;
 275         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 276                 wpa = 1;
 277         else
 278                 wpa = 0;
 279
 280         if (wpa) {
 281                 char *prefix;
 282                 fprintf(nconf, "wpa=%d\n", wpa);
 283
 284                 fprintf(nconf, "wpa_key_mgmt=");
 285                 prefix = "";
 286                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 287                         fprintf(nconf, "WPA-EAP");
 288                         prefix = " ";
 289                 }
 290                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 291                         fprintf(nconf, "%sWPA-PSK", prefix);
 292                 fprintf(nconf, "\n");
 293
 294                 fprintf(nconf, "wpa_pairwise=");
 295                 prefix = "";
 296                 if (cred->encr_type & WPS_ENCR_AES) {
 297                         fprintf(nconf, "CCMP");
 298                         prefix = " ";
 299                 }
 300                 if (cred->encr_type & WPS_ENCR_TKIP) {
 301                         fprintf(nconf, "%sTKIP", prefix);
 302                 }
 303                 fprintf(nconf, "\n");
 304
 305                 if (cred->key_len >= 8 && cred->key_len < 64) {
 306                         fprintf(nconf, "wpa_passphrase=");
 307                         for (i = 0; i < cred->key_len; i++)
 308                                 fputc(cred->key[i], nconf);
 309                         fprintf(nconf, "\n");
 310                 } else if (cred->key_len == 64) {
 311                         fprintf(nconf, "wpa_psk=");
 312                         for (i = 0; i < cred->key_len; i++)
 313                                 fputc(cred->key[i], nconf);
 314                         fprintf(nconf, "\n");
 315                 } else {
 316                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 317                                    "for WPA/WPA2",
 318                                    (unsigned long) cred->key_len);
 319                 }
 320
 321                 fprintf(nconf, "auth_algs=1\n");
 322         } else {
 323                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 324                     (cred->auth_type & WPS_AUTH_SHARED))
 325                         fprintf(nconf, "auth_algs=3\n");
 326                 else if (cred->auth_type & WPS_AUTH_SHARED)
 327                         fprintf(nconf, "auth_algs=2\n");
 328                 else
 329                         fprintf(nconf, "auth_algs=1\n");
 330
 331                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 332                         int key_idx = cred->key_idx;
 333                         if (key_idx)
 334                                 key_idx--;
 335                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 336                         fprintf(nconf, "wep_key%d=", key_idx);
 337                         if (cred->key_len == 10 || cred->key_len == 26) {
 338                                 /* WEP key as a hex string */
 339                                 for (i = 0; i < cred->key_len; i++)
 340                                         fputc(cred->key[i], nconf);
 341                         } else {
 342                                 /* Raw WEP key; convert to hex */
 343                                 for (i = 0; i < cred->key_len; i++)
 344                                         fprintf(nconf, "%02x", cred->key[i]);
 345                         }
 346                         fprintf(nconf, "\n");
 347                 }
 348         }
 349
 350         fprintf(nconf, "# WPS configuration - END\n");
 351
 352         multi_bss = 0;
 353         while (fgets(buf, sizeof(buf), oconf)) {
 354                 if (os_strncmp(buf, "bss=", 4) == 0)
 355                         multi_bss = 1;
 356                 if (!multi_bss &&
 357                     (str_starts(buf, "ssid=") ||
 358                      str_starts(buf, "auth_algs=") ||
 359                      str_starts(buf, "wps_state=") ||
 360                      str_starts(buf, "wpa=") ||
 361                      str_starts(buf, "wpa_psk=") ||
 362                      str_starts(buf, "wpa_pairwise=") ||
 363                      str_starts(buf, "rsn_pairwise=") ||
 364                      str_starts(buf, "wpa_key_mgmt=") ||
 365                      str_starts(buf, "wpa_passphrase="))) {
 366                         fprintf(nconf, "#WPS# %s", buf);
 367                 } else
 368                         fprintf(nconf, "%s", buf);
 369         }
 370
 371         fclose(nconf);
 372         fclose(oconf);
 373
 374         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 375                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 376                            "configuration file: %s", strerror(errno));
 377                 os_free(tmp_fname);
 378                 return -1;
 379         }
 380
 381         os_free(tmp_fname);
 382
 383         /* Schedule configuration reload after short period of time to allow
 384          * EAP-WSC to be finished.
 385          */
 386         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 387                                NULL);
 388
 389         /* TODO: dualband AP may need to update multiple configuration files */
 390
 391         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 392
 393         return 0;
 394 }
 395
 396
 397 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 398                                   struct wps_event_pwd_auth_fail *data)
 399 {
 400         FILE *f;
 401
 402         if (!data->enrollee)
 403                 return;
 404
 405         /*
 406          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 407          * if this happens multiple times.
 408          */
 409         hapd->ap_pin_failures++;
 410         if (hapd->ap_pin_failures < 4)
 411                 return;
 412
 413         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 414         hapd->wps->ap_setup_locked = 1;
 415
 416         wps_registrar_update_ie(hapd->wps->registrar);
 417
 418         if (hapd->conf->wps_cred_processing == 1)
 419                 return;
 420
 421         f = fopen(hapd->iface->config_fname, "a");
 422         if (f == NULL) {
 423                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 424                            "configuration file");
 425                 return;
 426         }
 427
 428         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 429         fprintf(f, "ap_setup_locked=1\n");
 430         fclose(f);
 431
 432         /* TODO: dualband AP may need to update multiple configuration files */
 433
 434         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 435 }
 436
 437
 438 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 439                                  union wps_event_data *data)
 440 {
 441         struct hostapd_data *hapd = ctx;
 442
 443         if (event == WPS_EV_PWD_AUTH_FAIL)
 444                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 445 }
 446
 447
 448 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 449 {
 450         wpabuf_free(hapd->wps_beacon_ie);
 451         hapd->wps_beacon_ie = NULL;
 452
 453         wpabuf_free(hapd->wps_probe_resp_ie);
 454         hapd->wps_probe_resp_ie = NULL;
 455
 456         hapd->drv.set_ap_wps_ie(hapd, NULL, NULL);
 457 }
 458
 459
 460 int hostapd_init_wps(struct hostapd_data *hapd,
 461                      struct hostapd_bss_config *conf)
 462 {
 463         struct wps_context *wps;
 464         struct wps_registrar_config cfg;
 465
 466         if (conf->wps_state == 0) {
 467                 hostapd_wps_clear_ies(hapd);
 468                 return 0;
 469         }
 470
 471         wps = os_zalloc(sizeof(*wps));
 472         if (wps == NULL)
 473                 return -1;
 474
 475         wps->cred_cb = hostapd_wps_cred_cb;
 476         wps->event_cb = hostapd_wps_event_cb;
 477         wps->cb_ctx = hapd;
 478
 479         os_memset(&cfg, 0, sizeof(cfg));
 480         wps->wps_state = hapd->conf->wps_state;
 481         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 482         if (is_nil_uuid(hapd->conf->uuid)) {
 483                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 484                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 485                             wps->uuid, UUID_LEN);
 486         } else
 487                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 488         wps->ssid_len = hapd->conf->ssid.ssid_len;
 489         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 490         wps->ap = 1;
 491         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 492         wps->dev.device_name = hapd->conf->device_name ?
 493                 os_strdup(hapd->conf->device_name) : NULL;
 494         wps->dev.manufacturer = hapd->conf->manufacturer ?
 495                 os_strdup(hapd->conf->manufacturer) : NULL;
 496         wps->dev.model_name = hapd->conf->model_name ?
 497                 os_strdup(hapd->conf->model_name) : NULL;
 498         wps->dev.model_number = hapd->conf->model_number ?
 499                 os_strdup(hapd->conf->model_number) : NULL;
 500         wps->dev.serial_number = hapd->conf->serial_number ?
 501                 os_strdup(hapd->conf->serial_number) : NULL;
 502         wps->config_methods =
 503                 wps_config_methods_str2bin(hapd->conf->config_methods);
 504         if (hapd->conf->device_type &&
 505             wps_dev_type_str2bin(hapd->conf->device_type,
 506                                  wps->dev.pri_dev_type) < 0) {
 507                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 508                 os_free(wps);
 509                 return -1;
 510         }
 511         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 512         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 513                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 514
 515         if (conf->wpa & WPA_PROTO_RSN) {
 516                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 517                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 518                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 519                         wps->auth_types |= WPS_AUTH_WPA2;
 520
 521                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 522                         wps->encr_types |= WPS_ENCR_AES;
 523                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 524                         wps->encr_types |= WPS_ENCR_TKIP;
 525         }
 526
 527         if (conf->wpa & WPA_PROTO_WPA) {
 528                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 529                         wps->auth_types |= WPS_AUTH_WPAPSK;
 530                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 531                         wps->auth_types |= WPS_AUTH_WPA;
 532
 533                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 534                         wps->encr_types |= WPS_ENCR_AES;
 535                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 536                         wps->encr_types |= WPS_ENCR_TKIP;
 537         }
 538
 539         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 540                 wps->encr_types |= WPS_ENCR_NONE;
 541                 wps->auth_types |= WPS_AUTH_OPEN;
 542         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 543                 wps->encr_types |= WPS_ENCR_WEP;
 544                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 545                         wps->auth_types |= WPS_AUTH_OPEN;
 546                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 547                         wps->auth_types |= WPS_AUTH_SHARED;
 548         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 549                 wps->auth_types |= WPS_AUTH_OPEN;
 550                 if (conf->default_wep_key_len)
 551                         wps->encr_types |= WPS_ENCR_WEP;
 552                 else
 553                         wps->encr_types |= WPS_ENCR_NONE;
 554         }
 555
 556         if (conf->ssid.wpa_psk_file) {
 557                 /* Use per-device PSKs */
 558         } else if (conf->ssid.wpa_passphrase) {
 559                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 560                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 561         } else if (conf->ssid.wpa_psk) {
 562                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 563                 if (wps->network_key == NULL) {
 564                         os_free(wps);
 565                         return -1;
 566                 }
 567                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 568                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 569                 wps->network_key_len = 2 * PMK_LEN;
 570         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 571                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 572                 if (wps->network_key == NULL) {
 573                         os_free(wps);
 574                         return -1;
 575                 }
 576                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 577                           conf->ssid.wep.len[0]);
 578                 wps->network_key_len = conf->ssid.wep.len[0];
 579         }
 580
 581         if (conf->ssid.wpa_psk) {
 582                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 583                 wps->psk_set = 1;
 584         }
 585
 586         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 587                 /* Override parameters to enable security by default */
 588                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 589                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 590         }
 591
 592         wps->ap_settings = conf->ap_settings;
 593         wps->ap_settings_len = conf->ap_settings_len;
 594
 595         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 596         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 597         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 598         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 599         cfg.cb_ctx = hapd;
 600         cfg.skip_cred_build = conf->skip_cred_build;
 601         cfg.extra_cred = conf->extra_cred;
 602         cfg.extra_cred_len = conf->extra_cred_len;
 603         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 604                 conf->skip_cred_build;
 605         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 606                 cfg.static_wep_only = 1;
 607
 608         wps->registrar = wps_registrar_init(wps, &cfg);
 609         if (wps->registrar == NULL) {
 610                 printf("Failed to initialize WPS Registrar\n");
 611                 os_free(wps->network_key);
 612                 os_free(wps);
 613                 return -1;
 614         }
 615
 616 #ifdef CONFIG_WPS_UPNP
 617         wps->friendly_name = hapd->conf->friendly_name;
 618         wps->manufacturer_url = hapd->conf->manufacturer_url;
 619         wps->model_description = hapd->conf->model_description;
 620         wps->model_url = hapd->conf->model_url;
 621         wps->upc = hapd->conf->upc;
 622
 623         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 624                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 625                 wps_registrar_deinit(wps->registrar);
 626                 os_free(wps->network_key);
 627                 os_free(wps);
 628                 return -1;
 629         }
 630 #endif /* CONFIG_WPS_UPNP */
 631
 632         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 633
 634         hapd->wps = wps;
 635
 636         return 0;
 637 }
 638
 639
 640 void hostapd_deinit_wps(struct hostapd_data *hapd)
 641 {
 642         if (hapd->wps == NULL)
 643                 return;
 644 #ifdef CONFIG_WPS_UPNP
 645         hostapd_wps_upnp_deinit(hapd);
 646 #endif /* CONFIG_WPS_UPNP */
 647         wps_registrar_deinit(hapd->wps->registrar);
 648         os_free(hapd->wps->network_key);
 649         wps_device_data_free(&hapd->wps->dev);
 650         wpabuf_free(hapd->wps->dh_pubkey);
 651         wpabuf_free(hapd->wps->dh_privkey);
 652         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 653         wpabuf_free(hapd->wps->oob_conf.dev_password);
 654         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 655         os_free(hapd->wps);
 656         hapd->wps = NULL;
 657         hostapd_wps_clear_ies(hapd);
 658 }
 659
 660
 661 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 662                         const char *pin, int timeout)
 663 {
 664         u8 u[UUID_LEN];
 665         int any = 0;
 666
 667         if (hapd->wps == NULL)
 668                 return -1;
 669         if (os_strcmp(uuid, "any") == 0)
 670                 any = 1;
 671         else if (uuid_str2bin(uuid, u))
 672                 return -1;
 673         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 674                                      (const u8 *) pin, os_strlen(pin),
 675                                      timeout);
 676 }
 677
 678
 679 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 680 {
 681         if (hapd->wps == NULL)
 682                 return -1;
 683         return wps_registrar_button_pushed(hapd->wps->registrar);
 684 }
 685
 686
 687 #ifdef CONFIG_WPS_OOB
 688 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 689                           char *path, char *method, char *name)
 690 {
 691         struct wps_context *wps = hapd->wps;
 692         struct oob_device_data *oob_dev;
 693
 694         oob_dev = wps_get_oob_device(device_type);
 695         if (oob_dev == NULL)
 696                 return -1;
 697         oob_dev->device_path = path;
 698         oob_dev->device_name = name;
 699         wps->oob_conf.oob_method = wps_get_oob_method(method);
 700
 701         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 702                 /*
 703                  * Use pre-configured DH keys in order to be able to write the
 704                  * key hash into the OOB file.
 705                  */
 706                 wpabuf_free(wps->dh_pubkey);
 707                 wpabuf_free(wps->dh_privkey);
 708                 wps->dh_privkey = NULL;
 709                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 710                                          &wps->dh_privkey);
 711                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 712                 if (wps->dh_pubkey == NULL) {
 713                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 714                                    "Diffie-Hellman handshake");
 715                         return -1;
 716                 }
 717         }
 718
 719         if (wps_process_oob(wps, oob_dev, 1) < 0)
 720                 goto error;
 721
 722         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 723              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 724             hostapd_wps_add_pin(hapd, "any",
 725                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 726             0)
 727                 goto error;
 728
 729         return 0;
 730
 731 error:
 732         wpabuf_free(wps->dh_pubkey);
 733         wps->dh_pubkey = NULL;
 734         wpabuf_free(wps->dh_privkey);
 735         wps->dh_privkey = NULL;
 736         return -1;
 737 }
 738 #endif /* CONFIG_WPS_OOB */
 739
 740
 741 static void hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 742                                      const u8 *ie, size_t ie_len)
 743 {
 744         struct hostapd_data *hapd = ctx;
 745         struct wpabuf *wps_ie;
 746
 747         if (hapd->wps == NULL)
 748                 return;
 749
 750         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 751         if (wps_ie == NULL)
 752                 return;
 753
 754         if (wpabuf_len(wps_ie) > 0) {
 755                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 756 #ifdef CONFIG_WPS_UPNP
 757                 /* FIX: what exactly should be included in the WLANEvent?
 758                  * WPS attributes? Full ProbeReq frame? */
 759                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 760                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 761                                                 wps_ie);
 762 #endif /* CONFIG_WPS_UPNP */
 763         }
 764
 765         wpabuf_free(wps_ie);
 766 }
 767
 768
 769 #ifdef CONFIG_WPS_UPNP
 770
 771 static int hostapd_rx_req_put_wlan_response(
 772         void *priv, enum upnp_wps_wlanevent_type ev_type,
 773         const u8 *mac_addr, const struct wpabuf *msg,
 774         enum wps_msg_type msg_type)
 775 {
 776         struct hostapd_data *hapd = priv;
 777         struct sta_info *sta;
 778         struct upnp_pending_message *p;
 779
 780         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 781                    MACSTR, ev_type, MAC2STR(mac_addr));
 782         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 783                     wpabuf_head(msg), wpabuf_len(msg));
 784         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 785                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 786                            "PutWLANResponse WLANEventType %d", ev_type);
 787                 return -1;
 788         }
 789
 790         /*
 791          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 792          * server implementation for delivery to the peer.
 793          */
 794
 795         sta = ap_get_sta(hapd, mac_addr);
 796         if (!sta) {
 797                 /*
 798                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 799                  * Pick STA that is in an ongoing WPS registration without
 800                  * checking the MAC address.
 801                  */
 802                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 803                            "on NewWLANEventMAC; try wildcard match");
 804                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 805                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 806                                 break;
 807                 }
 808         }
 809
 810         if (!sta) {
 811                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 812                 return 0;
 813         }
 814
 815         p = os_zalloc(sizeof(*p));
 816         if (p == NULL)
 817                 return -1;
 818         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 819         p->msg = wpabuf_dup(msg);
 820         p->type = msg_type;
 821         p->next = hapd->wps->upnp_msgs;
 822         hapd->wps->upnp_msgs = p;
 823
 824         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 825 }
 826
 827
 828 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
 829                                  struct wps_context *wps)
 830 {
 831         struct upnp_wps_device_ctx *ctx;
 832
 833         if (!hapd->conf->upnp_iface)
 834                 return 0;
 835         ctx = os_zalloc(sizeof(*ctx));
 836         if (ctx == NULL)
 837                 return -1;
 838
 839         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
 840         if (hapd->conf->ap_pin)
 841                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
 842
 843         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
 844         if (hapd->wps_upnp == NULL) {
 845                 os_free(ctx);
 846                 return -1;
 847         }
 848         wps->wps_upnp = hapd->wps_upnp;
 849
 850         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
 851                 upnp_wps_device_deinit(hapd->wps_upnp);
 852                 hapd->wps_upnp = NULL;
 853                 return -1;
 854         }
 855
 856         return 0;
 857 }
 858
 859
 860 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
 861 {
 862         upnp_wps_device_deinit(hapd->wps_upnp);
 863 }
 864
 865 #endif /* CONFIG_WPS_UPNP */
 866
 867
 868 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
 869                             char *buf, size_t buflen)
 870 {
 871         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
 872 }