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