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 "beacon.h"
  32 #include "sta_info.h"
  33 #include "wps_hostapd.h"
  34
  35
  36 #ifdef CONFIG_WPS_UPNP
  37 #include "wps/wps_upnp.h"
  38 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  39                                  struct wps_context *wps);
  40 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  41 #endif /* CONFIG_WPS_UPNP */
  42
  43 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
  44                                     const u8 *ie, size_t ie_len);
  45
  46
  47 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  48                                   size_t psk_len)
  49 {
  50         struct hostapd_data *hapd = ctx;
  51         struct hostapd_wpa_psk *p;
  52         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  53
  54         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  55                    MACSTR, MAC2STR(mac_addr));
  56         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  57
  58         if (psk_len != PMK_LEN) {
  59                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  60                            (unsigned long) psk_len);
  61                 return -1;
  62         }
  63
  64         /* Add the new PSK to runtime PSK list */
  65         p = os_zalloc(sizeof(*p));
  66         if (p == NULL)
  67                 return -1;
  68         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  69         os_memcpy(p->psk, psk, PMK_LEN);
  70
  71         p->next = ssid->wpa_psk;
  72         ssid->wpa_psk = p;
  73
  74         if (ssid->wpa_psk_file) {
  75                 FILE *f;
  76                 char hex[PMK_LEN * 2 + 1];
  77                 /* Add the new PSK to PSK list file */
  78                 f = fopen(ssid->wpa_psk_file, "a");
  79                 if (f == NULL) {
  80                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  81                                    "'%s'", ssid->wpa_psk_file);
  82                         return -1;
  83                 }
  84
  85                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  86                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  87                 fclose(f);
  88         }
  89
  90         return 0;
  91 }
  92
  93
  94 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
  95                                  struct wpabuf *probe_resp_ie)
  96 {
  97         struct hostapd_data *hapd = ctx;
  98         wpabuf_free(hapd->wps_beacon_ie);
  99         hapd->wps_beacon_ie = beacon_ie;
 100         wpabuf_free(hapd->wps_probe_resp_ie);
 101         hapd->wps_probe_resp_ie = probe_resp_ie;
 102         ieee802_11_set_beacon(hapd);
 103         return hapd->drv.set_ap_wps_ie(hapd);
 104 }
 105
 106
 107 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 108                                       const struct wps_device_data *dev)
 109 {
 110         struct hostapd_data *hapd = ctx;
 111         char uuid[40], txt[400];
 112         int len;
 113         char devtype[WPS_DEV_TYPE_BUFSIZE];
 114         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 115                 return;
 116         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 117         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 118                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 119                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 120                           dev->manufacturer, dev->model_name,
 121                           dev->model_number, dev->serial_number,
 122                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 123                                                sizeof(devtype)));
 124         if (len > 0 && len < (int) sizeof(txt))
 125                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 126
 127         if (hapd->conf->wps_pin_requests) {
 128                 FILE *f;
 129                 struct os_time t;
 130                 f = fopen(hapd->conf->wps_pin_requests, "a");
 131                 if (f == NULL)
 132                         return;
 133                 os_get_time(&t);
 134                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 135                         "\t%s\n",
 136                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 137                         dev->manufacturer, dev->model_name, dev->model_number,
 138                         dev->serial_number,
 139                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 140                                              sizeof(devtype)));
 141                 fclose(f);
 142         }
 143 }
 144
 145
 146 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 147                                        const u8 *uuid_e)
 148 {
 149         struct hostapd_data *hapd = ctx;
 150         char uuid[40];
 151         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 152                 return;
 153         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 154                 MAC2STR(mac_addr), uuid);
 155         if (hapd->wps_reg_success_cb)
 156                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 157                                          mac_addr, uuid_e);
 158 }
 159
 160
 161 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 162                                          const u8 *uuid_e,
 163                                          const u8 *pri_dev_type,
 164                                          u16 config_methods,
 165                                          u16 dev_password_id, u8 request_type,
 166                                          const char *dev_name)
 167 {
 168         struct hostapd_data *hapd = ctx;
 169         char uuid[40];
 170         char devtype[WPS_DEV_TYPE_BUFSIZE];
 171         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 172                 return;
 173         if (dev_name == NULL)
 174                 dev_name = "";
 175         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 176                      " %s %s 0x%x %u %u [%s]",
 177                      MAC2STR(addr), uuid,
 178                      wps_dev_type_bin2str(pri_dev_type, devtype,
 179                                           sizeof(devtype)),
 180                      config_methods, dev_password_id, request_type, dev_name);
 181 }
 182
 183
 184 static int str_starts(const char *str, const char *start)
 185 {
 186         return os_strncmp(str, start, os_strlen(start)) == 0;
 187 }
 188
 189
 190 static void wps_reload_config(void *eloop_data, void *user_ctx)
 191 {
 192         struct hostapd_iface *iface = eloop_data;
 193
 194         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 195         if (iface->reload_config(iface) < 0) {
 196                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 197                            "configuration");
 198         }
 199 }
 200
 201
 202 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 203 {
 204         struct hostapd_data *hapd = ctx;
 205         FILE *oconf, *nconf;
 206         size_t len, i;
 207         char *tmp_fname;
 208         char buf[1024];
 209         int multi_bss;
 210         int wpa;
 211
 212         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 213                         cred->cred_attr, cred->cred_attr_len);
 214
 215         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 216         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 217         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 218                    cred->auth_type);
 219         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 220         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 221         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 222                         cred->key, cred->key_len);
 223         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 224                    MAC2STR(cred->mac_addr));
 225
 226         if ((hapd->conf->wps_cred_processing == 1 ||
 227              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 228                 size_t blen = cred->cred_attr_len * 2 + 1;
 229                 char *_buf = os_malloc(blen);
 230                 if (_buf) {
 231                         wpa_snprintf_hex(_buf, blen,
 232                                          cred->cred_attr, cred->cred_attr_len);
 233                         wpa_msg(hapd->msg_ctx, MSG_INFO, "%s%s",
 234                                 WPS_EVENT_NEW_AP_SETTINGS, _buf);
 235                         os_free(_buf);
 236                 }
 237         } else
 238                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 239
 240         if (hapd->conf->wps_cred_processing == 1)
 241                 return 0;
 242
 243         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 244         hapd->wps->ssid_len = cred->ssid_len;
 245         hapd->wps->encr_types = cred->encr_type;
 246         hapd->wps->auth_types = cred->auth_type;
 247         if (cred->key_len == 0) {
 248                 os_free(hapd->wps->network_key);
 249                 hapd->wps->network_key = NULL;
 250                 hapd->wps->network_key_len = 0;
 251         } else {
 252                 if (hapd->wps->network_key == NULL ||
 253                     hapd->wps->network_key_len < cred->key_len) {
 254                         hapd->wps->network_key_len = 0;
 255                         os_free(hapd->wps->network_key);
 256                         hapd->wps->network_key = os_malloc(cred->key_len);
 257                         if (hapd->wps->network_key == NULL)
 258                                 return -1;
 259                 }
 260                 hapd->wps->network_key_len = cred->key_len;
 261                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 262         }
 263         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 264
 265         len = os_strlen(hapd->iface->config_fname) + 5;
 266         tmp_fname = os_malloc(len);
 267         if (tmp_fname == NULL)
 268                 return -1;
 269         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 270
 271         oconf = fopen(hapd->iface->config_fname, "r");
 272         if (oconf == NULL) {
 273                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 274                            "configuration file");
 275                 os_free(tmp_fname);
 276                 return -1;
 277         }
 278
 279         nconf = fopen(tmp_fname, "w");
 280         if (nconf == NULL) {
 281                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 282                            "configuration file");
 283                 os_free(tmp_fname);
 284                 fclose(oconf);
 285                 return -1;
 286         }
 287
 288         fprintf(nconf, "# WPS configuration - START\n");
 289
 290         fprintf(nconf, "wps_state=2\n");
 291
 292         fprintf(nconf, "ssid=");
 293         for (i = 0; i < cred->ssid_len; i++)
 294                 fputc(cred->ssid[i], nconf);
 295         fprintf(nconf, "\n");
 296
 297         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 298             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 299                 wpa = 3;
 300         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 301                 wpa = 2;
 302         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 303                 wpa = 1;
 304         else
 305                 wpa = 0;
 306
 307         if (wpa) {
 308                 char *prefix;
 309                 fprintf(nconf, "wpa=%d\n", wpa);
 310
 311                 fprintf(nconf, "wpa_key_mgmt=");
 312                 prefix = "";
 313                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 314                         fprintf(nconf, "WPA-EAP");
 315                         prefix = " ";
 316                 }
 317                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 318                         fprintf(nconf, "%sWPA-PSK", prefix);
 319                 fprintf(nconf, "\n");
 320
 321                 fprintf(nconf, "wpa_pairwise=");
 322                 prefix = "";
 323                 if (cred->encr_type & WPS_ENCR_AES) {
 324                         fprintf(nconf, "CCMP");
 325                         prefix = " ";
 326                 }
 327                 if (cred->encr_type & WPS_ENCR_TKIP) {
 328                         fprintf(nconf, "%sTKIP", prefix);
 329                 }
 330                 fprintf(nconf, "\n");
 331
 332                 if (cred->key_len >= 8 && cred->key_len < 64) {
 333                         fprintf(nconf, "wpa_passphrase=");
 334                         for (i = 0; i < cred->key_len; i++)
 335                                 fputc(cred->key[i], nconf);
 336                         fprintf(nconf, "\n");
 337                 } else if (cred->key_len == 64) {
 338                         fprintf(nconf, "wpa_psk=");
 339                         for (i = 0; i < cred->key_len; i++)
 340                                 fputc(cred->key[i], nconf);
 341                         fprintf(nconf, "\n");
 342                 } else {
 343                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 344                                    "for WPA/WPA2",
 345                                    (unsigned long) cred->key_len);
 346                 }
 347
 348                 fprintf(nconf, "auth_algs=1\n");
 349         } else {
 350                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 351                     (cred->auth_type & WPS_AUTH_SHARED))
 352                         fprintf(nconf, "auth_algs=3\n");
 353                 else if (cred->auth_type & WPS_AUTH_SHARED)
 354                         fprintf(nconf, "auth_algs=2\n");
 355                 else
 356                         fprintf(nconf, "auth_algs=1\n");
 357
 358                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 359                         int key_idx = cred->key_idx;
 360                         if (key_idx)
 361                                 key_idx--;
 362                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 363                         fprintf(nconf, "wep_key%d=", key_idx);
 364                         if (cred->key_len == 10 || cred->key_len == 26) {
 365                                 /* WEP key as a hex string */
 366                                 for (i = 0; i < cred->key_len; i++)
 367                                         fputc(cred->key[i], nconf);
 368                         } else {
 369                                 /* Raw WEP key; convert to hex */
 370                                 for (i = 0; i < cred->key_len; i++)
 371                                         fprintf(nconf, "%02x", cred->key[i]);
 372                         }
 373                         fprintf(nconf, "\n");
 374                 }
 375         }
 376
 377         fprintf(nconf, "# WPS configuration - END\n");
 378
 379         multi_bss = 0;
 380         while (fgets(buf, sizeof(buf), oconf)) {
 381                 if (os_strncmp(buf, "bss=", 4) == 0)
 382                         multi_bss = 1;
 383                 if (!multi_bss &&
 384                     (str_starts(buf, "ssid=") ||
 385                      str_starts(buf, "auth_algs=") ||
 386                      str_starts(buf, "wps_state=") ||
 387                      str_starts(buf, "wpa=") ||
 388                      str_starts(buf, "wpa_psk=") ||
 389                      str_starts(buf, "wpa_pairwise=") ||
 390                      str_starts(buf, "rsn_pairwise=") ||
 391                      str_starts(buf, "wpa_key_mgmt=") ||
 392                      str_starts(buf, "wpa_passphrase="))) {
 393                         fprintf(nconf, "#WPS# %s", buf);
 394                 } else
 395                         fprintf(nconf, "%s", buf);
 396         }
 397
 398         fclose(nconf);
 399         fclose(oconf);
 400
 401         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 402                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 403                            "configuration file: %s", strerror(errno));
 404                 os_free(tmp_fname);
 405                 return -1;
 406         }
 407
 408         os_free(tmp_fname);
 409
 410         /* Schedule configuration reload after short period of time to allow
 411          * EAP-WSC to be finished.
 412          */
 413         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 414                                NULL);
 415
 416         /* TODO: dualband AP may need to update multiple configuration files */
 417
 418         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 419
 420         return 0;
 421 }
 422
 423
 424 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 425                                   struct wps_event_pwd_auth_fail *data)
 426 {
 427         FILE *f;
 428
 429         if (!data->enrollee)
 430                 return;
 431
 432         /*
 433          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 434          * if this happens multiple times.
 435          */
 436         hapd->ap_pin_failures++;
 437         if (hapd->ap_pin_failures < 4)
 438                 return;
 439
 440         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 441         hapd->wps->ap_setup_locked = 1;
 442
 443         wps_registrar_update_ie(hapd->wps->registrar);
 444
 445         if (hapd->conf->wps_cred_processing == 1)
 446                 return;
 447
 448         f = fopen(hapd->iface->config_fname, "a");
 449         if (f == NULL) {
 450                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 451                            "configuration file");
 452                 return;
 453         }
 454
 455         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 456         fprintf(f, "ap_setup_locked=1\n");
 457         fclose(f);
 458
 459         /* TODO: dualband AP may need to update multiple configuration files */
 460
 461         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 462 }
 463
 464
 465 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 466                                  union wps_event_data *data)
 467 {
 468         struct hostapd_data *hapd = ctx;
 469
 470         if (event == WPS_EV_PWD_AUTH_FAIL)
 471                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 472 }
 473
 474
 475 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 476 {
 477         wpabuf_free(hapd->wps_beacon_ie);
 478         hapd->wps_beacon_ie = NULL;
 479
 480         wpabuf_free(hapd->wps_probe_resp_ie);
 481         hapd->wps_probe_resp_ie = NULL;
 482
 483         hapd->drv.set_ap_wps_ie(hapd);
 484 }
 485
 486
 487 int hostapd_init_wps(struct hostapd_data *hapd,
 488                      struct hostapd_bss_config *conf)
 489 {
 490         struct wps_context *wps;
 491         struct wps_registrar_config cfg;
 492
 493         if (conf->wps_state == 0) {
 494                 hostapd_wps_clear_ies(hapd);
 495                 return 0;
 496         }
 497
 498         wps = os_zalloc(sizeof(*wps));
 499         if (wps == NULL)
 500                 return -1;
 501
 502         wps->cred_cb = hostapd_wps_cred_cb;
 503         wps->event_cb = hostapd_wps_event_cb;
 504         wps->cb_ctx = hapd;
 505
 506         os_memset(&cfg, 0, sizeof(cfg));
 507         wps->wps_state = hapd->conf->wps_state;
 508         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 509         if (is_nil_uuid(hapd->conf->uuid)) {
 510                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 511                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 512                             wps->uuid, UUID_LEN);
 513         } else
 514                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 515         wps->ssid_len = hapd->conf->ssid.ssid_len;
 516         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 517         wps->ap = 1;
 518         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 519         wps->dev.device_name = hapd->conf->device_name ?
 520                 os_strdup(hapd->conf->device_name) : NULL;
 521         wps->dev.manufacturer = hapd->conf->manufacturer ?
 522                 os_strdup(hapd->conf->manufacturer) : NULL;
 523         wps->dev.model_name = hapd->conf->model_name ?
 524                 os_strdup(hapd->conf->model_name) : NULL;
 525         wps->dev.model_number = hapd->conf->model_number ?
 526                 os_strdup(hapd->conf->model_number) : NULL;
 527         wps->dev.serial_number = hapd->conf->serial_number ?
 528                 os_strdup(hapd->conf->serial_number) : NULL;
 529         wps->config_methods =
 530                 wps_config_methods_str2bin(hapd->conf->config_methods);
 531         if (hapd->conf->device_type &&
 532             wps_dev_type_str2bin(hapd->conf->device_type,
 533                                  wps->dev.pri_dev_type) < 0) {
 534                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 535                 os_free(wps);
 536                 return -1;
 537         }
 538         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 539         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 540                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 541
 542         if (conf->wpa & WPA_PROTO_RSN) {
 543                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 544                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 545                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 546                         wps->auth_types |= WPS_AUTH_WPA2;
 547
 548                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 549                         wps->encr_types |= WPS_ENCR_AES;
 550                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 551                         wps->encr_types |= WPS_ENCR_TKIP;
 552         }
 553
 554         if (conf->wpa & WPA_PROTO_WPA) {
 555                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 556                         wps->auth_types |= WPS_AUTH_WPAPSK;
 557                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 558                         wps->auth_types |= WPS_AUTH_WPA;
 559
 560                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 561                         wps->encr_types |= WPS_ENCR_AES;
 562                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 563                         wps->encr_types |= WPS_ENCR_TKIP;
 564         }
 565
 566         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 567                 wps->encr_types |= WPS_ENCR_NONE;
 568                 wps->auth_types |= WPS_AUTH_OPEN;
 569         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 570                 wps->encr_types |= WPS_ENCR_WEP;
 571                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 572                         wps->auth_types |= WPS_AUTH_OPEN;
 573                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 574                         wps->auth_types |= WPS_AUTH_SHARED;
 575         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 576                 wps->auth_types |= WPS_AUTH_OPEN;
 577                 if (conf->default_wep_key_len)
 578                         wps->encr_types |= WPS_ENCR_WEP;
 579                 else
 580                         wps->encr_types |= WPS_ENCR_NONE;
 581         }
 582
 583         if (conf->ssid.wpa_psk_file) {
 584                 /* Use per-device PSKs */
 585         } else if (conf->ssid.wpa_passphrase) {
 586                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 587                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 588         } else if (conf->ssid.wpa_psk) {
 589                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 590                 if (wps->network_key == NULL) {
 591                         os_free(wps);
 592                         return -1;
 593                 }
 594                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 595                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 596                 wps->network_key_len = 2 * PMK_LEN;
 597         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 598                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 599                 if (wps->network_key == NULL) {
 600                         os_free(wps);
 601                         return -1;
 602                 }
 603                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 604                           conf->ssid.wep.len[0]);
 605                 wps->network_key_len = conf->ssid.wep.len[0];
 606         }
 607
 608         if (conf->ssid.wpa_psk) {
 609                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 610                 wps->psk_set = 1;
 611         }
 612
 613         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 614                 /* Override parameters to enable security by default */
 615                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 616                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 617         }
 618
 619         wps->ap_settings = conf->ap_settings;
 620         wps->ap_settings_len = conf->ap_settings_len;
 621
 622         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 623         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 624         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 625         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 626         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
 627         cfg.cb_ctx = hapd;
 628         cfg.skip_cred_build = conf->skip_cred_build;
 629         cfg.extra_cred = conf->extra_cred;
 630         cfg.extra_cred_len = conf->extra_cred_len;
 631         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 632                 conf->skip_cred_build;
 633         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 634                 cfg.static_wep_only = 1;
 635
 636         wps->registrar = wps_registrar_init(wps, &cfg);
 637         if (wps->registrar == NULL) {
 638                 printf("Failed to initialize WPS Registrar\n");
 639                 os_free(wps->network_key);
 640                 os_free(wps);
 641                 return -1;
 642         }
 643
 644 #ifdef CONFIG_WPS_UPNP
 645         wps->friendly_name = hapd->conf->friendly_name;
 646         wps->manufacturer_url = hapd->conf->manufacturer_url;
 647         wps->model_description = hapd->conf->model_description;
 648         wps->model_url = hapd->conf->model_url;
 649         wps->upc = hapd->conf->upc;
 650
 651         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 652                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 653                 wps_registrar_deinit(wps->registrar);
 654                 os_free(wps->network_key);
 655                 os_free(wps);
 656                 return -1;
 657         }
 658 #endif /* CONFIG_WPS_UPNP */
 659
 660         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 661
 662         hapd->wps = wps;
 663
 664         return 0;
 665 }
 666
 667
 668 void hostapd_deinit_wps(struct hostapd_data *hapd)
 669 {
 670         if (hapd->wps == NULL)
 671                 return;
 672 #ifdef CONFIG_WPS_UPNP
 673         hostapd_wps_upnp_deinit(hapd);
 674 #endif /* CONFIG_WPS_UPNP */
 675         wps_registrar_deinit(hapd->wps->registrar);
 676         os_free(hapd->wps->network_key);
 677         wps_device_data_free(&hapd->wps->dev);
 678         wpabuf_free(hapd->wps->dh_pubkey);
 679         wpabuf_free(hapd->wps->dh_privkey);
 680         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 681         wpabuf_free(hapd->wps->oob_conf.dev_password);
 682         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 683         os_free(hapd->wps);
 684         hapd->wps = NULL;
 685         hostapd_wps_clear_ies(hapd);
 686 }
 687
 688
 689 void hostapd_update_wps(struct hostapd_data *hapd)
 690 {
 691         if (hapd->wps == NULL)
 692                 return;
 693         if (hapd->conf->wps_state)
 694                 wps_registrar_update_ie(hapd->wps->registrar);
 695         else
 696                 hostapd_deinit_wps(hapd);
 697 }
 698
 699
 700 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 701                         const char *pin, int timeout)
 702 {
 703         u8 u[UUID_LEN];
 704         int any = 0;
 705
 706         if (hapd->wps == NULL)
 707                 return -1;
 708         if (os_strcmp(uuid, "any") == 0)
 709                 any = 1;
 710         else if (uuid_str2bin(uuid, u))
 711                 return -1;
 712         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 713                                      (const u8 *) pin, os_strlen(pin),
 714                                      timeout);
 715 }
 716
 717
 718 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 719 {
 720         if (hapd->wps == NULL)
 721                 return -1;
 722         return wps_registrar_button_pushed(hapd->wps->registrar);
 723 }
 724
 725
 726 #ifdef CONFIG_WPS_OOB
 727 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 728                           char *path, char *method, char *name)
 729 {
 730         struct wps_context *wps = hapd->wps;
 731         struct oob_device_data *oob_dev;
 732
 733         oob_dev = wps_get_oob_device(device_type);
 734         if (oob_dev == NULL)
 735                 return -1;
 736         oob_dev->device_path = path;
 737         oob_dev->device_name = name;
 738         wps->oob_conf.oob_method = wps_get_oob_method(method);
 739
 740         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 741                 /*
 742                  * Use pre-configured DH keys in order to be able to write the
 743                  * key hash into the OOB file.
 744                  */
 745                 wpabuf_free(wps->dh_pubkey);
 746                 wpabuf_free(wps->dh_privkey);
 747                 wps->dh_privkey = NULL;
 748                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 749                                          &wps->dh_privkey);
 750                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 751                 if (wps->dh_pubkey == NULL) {
 752                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 753                                    "Diffie-Hellman handshake");
 754                         return -1;
 755                 }
 756         }
 757
 758         if (wps_process_oob(wps, oob_dev, 1) < 0)
 759                 goto error;
 760
 761         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 762              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 763             hostapd_wps_add_pin(hapd, "any",
 764                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 765             0)
 766                 goto error;
 767
 768         return 0;
 769
 770 error:
 771         wpabuf_free(wps->dh_pubkey);
 772         wps->dh_pubkey = NULL;
 773         wpabuf_free(wps->dh_privkey);
 774         wps->dh_privkey = NULL;
 775         return -1;
 776 }
 777 #endif /* CONFIG_WPS_OOB */
 778
 779
 780 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 781                                     const u8 *ie, size_t ie_len)
 782 {
 783         struct hostapd_data *hapd = ctx;
 784         struct wpabuf *wps_ie;
 785         struct ieee802_11_elems elems;
 786
 787         if (hapd->wps == NULL)
 788                 return 0;
 789
 790         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
 791                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
 792                            MACSTR, MAC2STR(addr));
 793                 return 0;
 794         }
 795
 796         if (elems.ssid && elems.ssid_len > 0 &&
 797             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
 798              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
 799              0))
 800                 return 0; /* Not for us */
 801
 802         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 803         if (wps_ie == NULL)
 804                 return 0;
 805
 806         if (wpabuf_len(wps_ie) > 0) {
 807                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 808 #ifdef CONFIG_WPS_UPNP
 809                 /* FIX: what exactly should be included in the WLANEvent?
 810                  * WPS attributes? Full ProbeReq frame? */
 811                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 812                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 813                                                 wps_ie);
 814 #endif /* CONFIG_WPS_UPNP */
 815         }
 816
 817         wpabuf_free(wps_ie);
 818
 819         return 0;
 820 }
 821
 822
 823 #ifdef CONFIG_WPS_UPNP
 824
 825 static int hostapd_rx_req_put_wlan_response(
 826         void *priv, enum upnp_wps_wlanevent_type ev_type,
 827         const u8 *mac_addr, const struct wpabuf *msg,
 828         enum wps_msg_type msg_type)
 829 {
 830         struct hostapd_data *hapd = priv;
 831         struct sta_info *sta;
 832         struct upnp_pending_message *p;
 833
 834         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 835                    MACSTR, ev_type, MAC2STR(mac_addr));
 836         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 837                     wpabuf_head(msg), wpabuf_len(msg));
 838         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 839                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 840                            "PutWLANResponse WLANEventType %d", ev_type);
 841                 return -1;
 842         }
 843
 844         /*
 845          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 846          * server implementation for delivery to the peer.
 847          */
 848
 849         sta = ap_get_sta(hapd, mac_addr);
 850         if (!sta) {
 851                 /*
 852                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 853                  * Pick STA that is in an ongoing WPS registration without
 854                  * checking the MAC address.
 855                  */
 856                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 857                            "on NewWLANEventMAC; try wildcard match");
 858                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 859                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 860                                 break;
 861                 }
 862         }
 863
 864         if (!sta) {
 865                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 866                 return 0;
 867         }
 868
 869         p = os_zalloc(sizeof(*p));
 870         if (p == NULL)
 871                 return -1;
 872         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 873         p->msg = wpabuf_dup(msg);
 874         p->type = msg_type;
 875         p->next = hapd->wps->upnp_msgs;
 876         hapd->wps->upnp_msgs = p;
 877
 878         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 879 }
 880
 881
 882 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
 883                                  struct wps_context *wps)
 884 {
 885         struct upnp_wps_device_ctx *ctx;
 886
 887         if (!hapd->conf->upnp_iface)
 888                 return 0;
 889         ctx = os_zalloc(sizeof(*ctx));
 890         if (ctx == NULL)
 891                 return -1;
 892
 893         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
 894         if (hapd->conf->ap_pin)
 895                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
 896
 897         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
 898         if (hapd->wps_upnp == NULL) {
 899                 os_free(ctx);
 900                 return -1;
 901         }
 902         wps->wps_upnp = hapd->wps_upnp;
 903
 904         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
 905                 upnp_wps_device_deinit(hapd->wps_upnp);
 906                 hapd->wps_upnp = NULL;
 907                 return -1;
 908         }
 909
 910         return 0;
 911 }
 912
 913
 914 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
 915 {
 916         upnp_wps_device_deinit(hapd->wps_upnp);
 917 }
 918
 919 #endif /* CONFIG_WPS_UPNP */
 920
 921
 922 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
 923                             char *buf, size_t buflen)
 924 {
 925         if (hapd->wps == NULL)
 926                 return 0;
 927         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
 928 }