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