src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2009, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "utils/eloop.h"
  19 #include "utils/uuid.h"
  20 #include "crypto/dh_groups.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/ieee802_11_common.h"
  24 #include "eapol_auth/eapol_auth_sm.h"
  25 #include "eapol_auth/eapol_auth_sm_i.h"
  26 #include "wps/wps.h"
  27 #include "wps/wps_defs.h"
  28 #include "wps/wps_dev_attr.h"
  29 #include "hostapd.h"
  30 #include "ap_config.h"
  31 #include "sta_info.h"
  32 #include "wps_hostapd.h"
  33
  34
  35 #ifdef CONFIG_WPS_UPNP
  36 #include "wps/wps_upnp.h"
  37 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  38                                  struct wps_context *wps);
  39 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  40 #endif /* CONFIG_WPS_UPNP */
  41
  42 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
  43                                     const u8 *ie, size_t ie_len);
  44
  45
  46 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  47                                   size_t psk_len)
  48 {
  49         struct hostapd_data *hapd = ctx;
  50         struct hostapd_wpa_psk *p;
  51         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  52
  53         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  54                    MACSTR, MAC2STR(mac_addr));
  55         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  56
  57         if (psk_len != PMK_LEN) {
  58                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  59                            (unsigned long) psk_len);
  60                 return -1;
  61         }
  62
  63         /* Add the new PSK to runtime PSK list */
  64         p = os_zalloc(sizeof(*p));
  65         if (p == NULL)
  66                 return -1;
  67         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  68         os_memcpy(p->psk, psk, PMK_LEN);
  69
  70         p->next = ssid->wpa_psk;
  71         ssid->wpa_psk = p;
  72
  73         if (ssid->wpa_psk_file) {
  74                 FILE *f;
  75                 char hex[PMK_LEN * 2 + 1];
  76                 /* Add the new PSK to PSK list file */
  77                 f = fopen(ssid->wpa_psk_file, "a");
  78                 if (f == NULL) {
  79                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  80                                    "'%s'", ssid->wpa_psk_file);
  81                         return -1;
  82                 }
  83
  84                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  85                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  86                 fclose(f);
  87         }
  88
  89         return 0;
  90 }
  91
  92
  93 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
  94                                  struct wpabuf *probe_resp_ie)
  95 {
  96         struct hostapd_data *hapd = ctx;
  97         wpabuf_free(hapd->wps_beacon_ie);
  98         hapd->wps_beacon_ie = beacon_ie;
  99         wpabuf_free(hapd->wps_probe_resp_ie);
 100         hapd->wps_probe_resp_ie = probe_resp_ie;
 101         return hapd->drv.set_ap_wps_ie(hapd, hapd->wps_beacon_ie,
 102                                        hapd->wps_probe_resp_ie);
 103 }
 104
 105
 106 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 107                                       const struct wps_device_data *dev)
 108 {
 109         struct hostapd_data *hapd = ctx;
 110         char uuid[40], txt[400];
 111         int len;
 112         char devtype[WPS_DEV_TYPE_BUFSIZE];
 113         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 114                 return;
 115         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 116         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 117                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 118                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 119                           dev->manufacturer, dev->model_name,
 120                           dev->model_number, dev->serial_number,
 121                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 122                                                sizeof(devtype)));
 123         if (len > 0 && len < (int) sizeof(txt))
 124                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 125
 126         if (hapd->conf->wps_pin_requests) {
 127                 FILE *f;
 128                 struct os_time t;
 129                 f = fopen(hapd->conf->wps_pin_requests, "a");
 130                 if (f == NULL)
 131                         return;
 132                 os_get_time(&t);
 133                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 134                         "\t%s\n",
 135                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 136                         dev->manufacturer, dev->model_name, dev->model_number,
 137                         dev->serial_number,
 138                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 139                                              sizeof(devtype)));
 140                 fclose(f);
 141         }
 142 }
 143
 144
 145 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 146                                        const u8 *uuid_e)
 147 {
 148         struct hostapd_data *hapd = ctx;
 149         char uuid[40];
 150         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 151                 return;
 152         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 153                 MAC2STR(mac_addr), uuid);
 154 }
 155
 156
 157 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 158                                          const u8 *uuid_e,
 159                                          const u8 *pri_dev_type,
 160                                          u16 config_methods,
 161                                          u16 dev_password_id, u8 request_type,
 162                                          const char *dev_name)
 163 {
 164         struct hostapd_data *hapd = ctx;
 165         char uuid[40];
 166         char devtype[WPS_DEV_TYPE_BUFSIZE];
 167         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 168                 return;
 169         if (dev_name == NULL)
 170                 dev_name = "";
 171         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 172                      " %s %s 0x%x %u %u [%s]",
 173                      MAC2STR(addr), uuid,
 174                      wps_dev_type_bin2str(pri_dev_type, devtype,
 175                                           sizeof(devtype)),
 176                      config_methods, dev_password_id, request_type, dev_name);
 177 }
 178
 179
 180 static int str_starts(const char *str, const char *start)
 181 {
 182         return os_strncmp(str, start, os_strlen(start)) == 0;
 183 }
 184
 185
 186 static void wps_reload_config(void *eloop_data, void *user_ctx)
 187 {
 188         struct hostapd_iface *iface = eloop_data;
 189
 190         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 191         if (iface->reload_config(iface) < 0) {
 192                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 193                            "configuration");
 194         }
 195 }
 196
 197
 198 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 199 {
 200         struct hostapd_data *hapd = ctx;
 201         FILE *oconf, *nconf;
 202         size_t len, i;
 203         char *tmp_fname;
 204         char buf[1024];
 205         int multi_bss;
 206         int wpa;
 207
 208         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 209                         cred->cred_attr, cred->cred_attr_len);
 210
 211         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 212         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 213         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 214                    cred->auth_type);
 215         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 216         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 217         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 218                         cred->key, cred->key_len);
 219         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 220                    MAC2STR(cred->mac_addr));
 221
 222         if ((hapd->conf->wps_cred_processing == 1 ||
 223              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 224                 size_t blen = cred->cred_attr_len * 2 + 1;
 225                 char *_buf = os_malloc(blen);
 226                 if (_buf) {
 227                         wpa_snprintf_hex(_buf, blen,
 228                                          cred->cred_attr, cred->cred_attr_len);
 229                         wpa_msg(hapd->msg_ctx, MSG_INFO, "%s%s",
 230                                 WPS_EVENT_NEW_AP_SETTINGS, _buf);
 231                         os_free(_buf);
 232                 }
 233         } else
 234                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 235
 236         if (hapd->conf->wps_cred_processing == 1)
 237                 return 0;
 238
 239         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 240         hapd->wps->ssid_len = cred->ssid_len;
 241         hapd->wps->encr_types = cred->encr_type;
 242         hapd->wps->auth_types = cred->auth_type;
 243         if (cred->key_len == 0) {
 244                 os_free(hapd->wps->network_key);
 245                 hapd->wps->network_key = NULL;
 246                 hapd->wps->network_key_len = 0;
 247         } else {
 248                 if (hapd->wps->network_key == NULL ||
 249                     hapd->wps->network_key_len < cred->key_len) {
 250                         hapd->wps->network_key_len = 0;
 251                         os_free(hapd->wps->network_key);
 252                         hapd->wps->network_key = os_malloc(cred->key_len);
 253                         if (hapd->wps->network_key == NULL)
 254                                 return -1;
 255                 }
 256                 hapd->wps->network_key_len = cred->key_len;
 257                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 258         }
 259         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 260
 261         len = os_strlen(hapd->iface->config_fname) + 5;
 262         tmp_fname = os_malloc(len);
 263         if (tmp_fname == NULL)
 264                 return -1;
 265         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 266
 267         oconf = fopen(hapd->iface->config_fname, "r");
 268         if (oconf == NULL) {
 269                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 270                            "configuration file");
 271                 os_free(tmp_fname);
 272                 return -1;
 273         }
 274
 275         nconf = fopen(tmp_fname, "w");
 276         if (nconf == NULL) {
 277                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 278                            "configuration file");
 279                 os_free(tmp_fname);
 280                 fclose(oconf);
 281                 return -1;
 282         }
 283
 284         fprintf(nconf, "# WPS configuration - START\n");
 285
 286         fprintf(nconf, "wps_state=2\n");
 287
 288         fprintf(nconf, "ssid=");
 289         for (i = 0; i < cred->ssid_len; i++)
 290                 fputc(cred->ssid[i], nconf);
 291         fprintf(nconf, "\n");
 292
 293         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 294             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 295                 wpa = 3;
 296         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 297                 wpa = 2;
 298         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 299                 wpa = 1;
 300         else
 301                 wpa = 0;
 302
 303         if (wpa) {
 304                 char *prefix;
 305                 fprintf(nconf, "wpa=%d\n", wpa);
 306
 307                 fprintf(nconf, "wpa_key_mgmt=");
 308                 prefix = "";
 309                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 310                         fprintf(nconf, "WPA-EAP");
 311                         prefix = " ";
 312                 }
 313                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 314                         fprintf(nconf, "%sWPA-PSK", prefix);
 315                 fprintf(nconf, "\n");
 316
 317                 fprintf(nconf, "wpa_pairwise=");
 318                 prefix = "";
 319                 if (cred->encr_type & WPS_ENCR_AES) {
 320                         fprintf(nconf, "CCMP");
 321                         prefix = " ";
 322                 }
 323                 if (cred->encr_type & WPS_ENCR_TKIP) {
 324                         fprintf(nconf, "%sTKIP", prefix);
 325                 }
 326                 fprintf(nconf, "\n");
 327
 328                 if (cred->key_len >= 8 && cred->key_len < 64) {
 329                         fprintf(nconf, "wpa_passphrase=");
 330                         for (i = 0; i < cred->key_len; i++)
 331                                 fputc(cred->key[i], nconf);
 332                         fprintf(nconf, "\n");
 333                 } else if (cred->key_len == 64) {
 334                         fprintf(nconf, "wpa_psk=");
 335                         for (i = 0; i < cred->key_len; i++)
 336                                 fputc(cred->key[i], nconf);
 337                         fprintf(nconf, "\n");
 338                 } else {
 339                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 340                                    "for WPA/WPA2",
 341                                    (unsigned long) cred->key_len);
 342                 }
 343
 344                 fprintf(nconf, "auth_algs=1\n");
 345         } else {
 346                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 347                     (cred->auth_type & WPS_AUTH_SHARED))
 348                         fprintf(nconf, "auth_algs=3\n");
 349                 else if (cred->auth_type & WPS_AUTH_SHARED)
 350                         fprintf(nconf, "auth_algs=2\n");
 351                 else
 352                         fprintf(nconf, "auth_algs=1\n");
 353
 354                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 355                         int key_idx = cred->key_idx;
 356                         if (key_idx)
 357                                 key_idx--;
 358                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 359                         fprintf(nconf, "wep_key%d=", key_idx);
 360                         if (cred->key_len == 10 || cred->key_len == 26) {
 361                                 /* WEP key as a hex string */
 362                                 for (i = 0; i < cred->key_len; i++)
 363                                         fputc(cred->key[i], nconf);
 364                         } else {
 365                                 /* Raw WEP key; convert to hex */
 366                                 for (i = 0; i < cred->key_len; i++)
 367                                         fprintf(nconf, "%02x", cred->key[i]);
 368                         }
 369                         fprintf(nconf, "\n");
 370                 }
 371         }
 372
 373         fprintf(nconf, "# WPS configuration - END\n");
 374
 375         multi_bss = 0;
 376         while (fgets(buf, sizeof(buf), oconf)) {
 377                 if (os_strncmp(buf, "bss=", 4) == 0)
 378                         multi_bss = 1;
 379                 if (!multi_bss &&
 380                     (str_starts(buf, "ssid=") ||
 381                      str_starts(buf, "auth_algs=") ||
 382                      str_starts(buf, "wps_state=") ||
 383                      str_starts(buf, "wpa=") ||
 384                      str_starts(buf, "wpa_psk=") ||
 385                      str_starts(buf, "wpa_pairwise=") ||
 386                      str_starts(buf, "rsn_pairwise=") ||
 387                      str_starts(buf, "wpa_key_mgmt=") ||
 388                      str_starts(buf, "wpa_passphrase="))) {
 389                         fprintf(nconf, "#WPS# %s", buf);
 390                 } else
 391                         fprintf(nconf, "%s", buf);
 392         }
 393
 394         fclose(nconf);
 395         fclose(oconf);
 396
 397         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 398                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 399                            "configuration file: %s", strerror(errno));
 400                 os_free(tmp_fname);
 401                 return -1;
 402         }
 403
 404         os_free(tmp_fname);
 405
 406         /* Schedule configuration reload after short period of time to allow
 407          * EAP-WSC to be finished.
 408          */
 409         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 410                                NULL);
 411
 412         /* TODO: dualband AP may need to update multiple configuration files */
 413
 414         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 415
 416         return 0;
 417 }
 418
 419
 420 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 421                                   struct wps_event_pwd_auth_fail *data)
 422 {
 423         FILE *f;
 424
 425         if (!data->enrollee)
 426                 return;
 427
 428         /*
 429          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 430          * if this happens multiple times.
 431          */
 432         hapd->ap_pin_failures++;
 433         if (hapd->ap_pin_failures < 4)
 434                 return;
 435
 436         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 437         hapd->wps->ap_setup_locked = 1;
 438
 439         wps_registrar_update_ie(hapd->wps->registrar);
 440
 441         if (hapd->conf->wps_cred_processing == 1)
 442                 return;
 443
 444         f = fopen(hapd->iface->config_fname, "a");
 445         if (f == NULL) {
 446                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 447                            "configuration file");
 448                 return;
 449         }
 450
 451         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 452         fprintf(f, "ap_setup_locked=1\n");
 453         fclose(f);
 454
 455         /* TODO: dualband AP may need to update multiple configuration files */
 456
 457         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 458 }
 459
 460
 461 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 462                                  union wps_event_data *data)
 463 {
 464         struct hostapd_data *hapd = ctx;
 465
 466         if (event == WPS_EV_PWD_AUTH_FAIL)
 467                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 468 }
 469
 470
 471 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 472 {
 473         wpabuf_free(hapd->wps_beacon_ie);
 474         hapd->wps_beacon_ie = NULL;
 475
 476         wpabuf_free(hapd->wps_probe_resp_ie);
 477         hapd->wps_probe_resp_ie = NULL;
 478
 479         hapd->drv.set_ap_wps_ie(hapd, NULL, NULL);
 480 }
 481
 482
 483 int hostapd_init_wps(struct hostapd_data *hapd,
 484                      struct hostapd_bss_config *conf)
 485 {
 486         struct wps_context *wps;
 487         struct wps_registrar_config cfg;
 488
 489         if (conf->wps_state == 0) {
 490                 hostapd_wps_clear_ies(hapd);
 491                 return 0;
 492         }
 493
 494         wps = os_zalloc(sizeof(*wps));
 495         if (wps == NULL)
 496                 return -1;
 497
 498         wps->cred_cb = hostapd_wps_cred_cb;
 499         wps->event_cb = hostapd_wps_event_cb;
 500         wps->cb_ctx = hapd;
 501
 502         os_memset(&cfg, 0, sizeof(cfg));
 503         wps->wps_state = hapd->conf->wps_state;
 504         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 505         if (is_nil_uuid(hapd->conf->uuid)) {
 506                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 507                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 508                             wps->uuid, UUID_LEN);
 509         } else
 510                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 511         wps->ssid_len = hapd->conf->ssid.ssid_len;
 512         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 513         wps->ap = 1;
 514         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 515         wps->dev.device_name = hapd->conf->device_name ?
 516                 os_strdup(hapd->conf->device_name) : NULL;
 517         wps->dev.manufacturer = hapd->conf->manufacturer ?
 518                 os_strdup(hapd->conf->manufacturer) : NULL;
 519         wps->dev.model_name = hapd->conf->model_name ?
 520                 os_strdup(hapd->conf->model_name) : NULL;
 521         wps->dev.model_number = hapd->conf->model_number ?
 522                 os_strdup(hapd->conf->model_number) : NULL;
 523         wps->dev.serial_number = hapd->conf->serial_number ?
 524                 os_strdup(hapd->conf->serial_number) : NULL;
 525         wps->config_methods =
 526                 wps_config_methods_str2bin(hapd->conf->config_methods);
 527         if (hapd->conf->device_type &&
 528             wps_dev_type_str2bin(hapd->conf->device_type,
 529                                  wps->dev.pri_dev_type) < 0) {
 530                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 531                 os_free(wps);
 532                 return -1;
 533         }
 534         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 535         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 536                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 537
 538         if (conf->wpa & WPA_PROTO_RSN) {
 539                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 540                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 541                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 542                         wps->auth_types |= WPS_AUTH_WPA2;
 543
 544                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 545                         wps->encr_types |= WPS_ENCR_AES;
 546                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 547                         wps->encr_types |= WPS_ENCR_TKIP;
 548         }
 549
 550         if (conf->wpa & WPA_PROTO_WPA) {
 551                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 552                         wps->auth_types |= WPS_AUTH_WPAPSK;
 553                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 554                         wps->auth_types |= WPS_AUTH_WPA;
 555
 556                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 557                         wps->encr_types |= WPS_ENCR_AES;
 558                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 559                         wps->encr_types |= WPS_ENCR_TKIP;
 560         }
 561
 562         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 563                 wps->encr_types |= WPS_ENCR_NONE;
 564                 wps->auth_types |= WPS_AUTH_OPEN;
 565         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 566                 wps->encr_types |= WPS_ENCR_WEP;
 567                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 568                         wps->auth_types |= WPS_AUTH_OPEN;
 569                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 570                         wps->auth_types |= WPS_AUTH_SHARED;
 571         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 572                 wps->auth_types |= WPS_AUTH_OPEN;
 573                 if (conf->default_wep_key_len)
 574                         wps->encr_types |= WPS_ENCR_WEP;
 575                 else
 576                         wps->encr_types |= WPS_ENCR_NONE;
 577         }
 578
 579         if (conf->ssid.wpa_psk_file) {
 580                 /* Use per-device PSKs */
 581         } else if (conf->ssid.wpa_passphrase) {
 582                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 583                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 584         } else if (conf->ssid.wpa_psk) {
 585                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 586                 if (wps->network_key == NULL) {
 587                         os_free(wps);
 588                         return -1;
 589                 }
 590                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 591                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 592                 wps->network_key_len = 2 * PMK_LEN;
 593         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 594                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 595                 if (wps->network_key == NULL) {
 596                         os_free(wps);
 597                         return -1;
 598                 }
 599                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 600                           conf->ssid.wep.len[0]);
 601                 wps->network_key_len = conf->ssid.wep.len[0];
 602         }
 603
 604         if (conf->ssid.wpa_psk) {
 605                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 606                 wps->psk_set = 1;
 607         }
 608
 609         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 610                 /* Override parameters to enable security by default */
 611                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 612                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 613         }
 614
 615         wps->ap_settings = conf->ap_settings;
 616         wps->ap_settings_len = conf->ap_settings_len;
 617
 618         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 619         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 620         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 621         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 622         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
 623         cfg.cb_ctx = hapd;
 624         cfg.skip_cred_build = conf->skip_cred_build;
 625         cfg.extra_cred = conf->extra_cred;
 626         cfg.extra_cred_len = conf->extra_cred_len;
 627         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 628                 conf->skip_cred_build;
 629         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 630                 cfg.static_wep_only = 1;
 631
 632         wps->registrar = wps_registrar_init(wps, &cfg);
 633         if (wps->registrar == NULL) {
 634                 printf("Failed to initialize WPS Registrar\n");
 635                 os_free(wps->network_key);
 636                 os_free(wps);
 637                 return -1;
 638         }
 639
 640 #ifdef CONFIG_WPS_UPNP
 641         wps->friendly_name = hapd->conf->friendly_name;
 642         wps->manufacturer_url = hapd->conf->manufacturer_url;
 643         wps->model_description = hapd->conf->model_description;
 644         wps->model_url = hapd->conf->model_url;
 645         wps->upc = hapd->conf->upc;
 646
 647         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 648                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 649                 wps_registrar_deinit(wps->registrar);
 650                 os_free(wps->network_key);
 651                 os_free(wps);
 652                 return -1;
 653         }
 654 #endif /* CONFIG_WPS_UPNP */
 655
 656         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 657
 658         hapd->wps = wps;
 659
 660         return 0;
 661 }
 662
 663
 664 void hostapd_deinit_wps(struct hostapd_data *hapd)
 665 {
 666         if (hapd->wps == NULL)
 667                 return;
 668 #ifdef CONFIG_WPS_UPNP
 669         hostapd_wps_upnp_deinit(hapd);
 670 #endif /* CONFIG_WPS_UPNP */
 671         wps_registrar_deinit(hapd->wps->registrar);
 672         os_free(hapd->wps->network_key);
 673         wps_device_data_free(&hapd->wps->dev);
 674         wpabuf_free(hapd->wps->dh_pubkey);
 675         wpabuf_free(hapd->wps->dh_privkey);
 676         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 677         wpabuf_free(hapd->wps->oob_conf.dev_password);
 678         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 679         os_free(hapd->wps);
 680         hapd->wps = NULL;
 681         hostapd_wps_clear_ies(hapd);
 682 }
 683
 684
 685 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 686                         const char *pin, int timeout)
 687 {
 688         u8 u[UUID_LEN];
 689         int any = 0;
 690
 691         if (hapd->wps == NULL)
 692                 return -1;
 693         if (os_strcmp(uuid, "any") == 0)
 694                 any = 1;
 695         else if (uuid_str2bin(uuid, u))
 696                 return -1;
 697         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 698                                      (const u8 *) pin, os_strlen(pin),
 699                                      timeout);
 700 }
 701
 702
 703 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 704 {
 705         if (hapd->wps == NULL)
 706                 return -1;
 707         return wps_registrar_button_pushed(hapd->wps->registrar);
 708 }
 709
 710
 711 #ifdef CONFIG_WPS_OOB
 712 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 713                           char *path, char *method, char *name)
 714 {
 715         struct wps_context *wps = hapd->wps;
 716         struct oob_device_data *oob_dev;
 717
 718         oob_dev = wps_get_oob_device(device_type);
 719         if (oob_dev == NULL)
 720                 return -1;
 721         oob_dev->device_path = path;
 722         oob_dev->device_name = name;
 723         wps->oob_conf.oob_method = wps_get_oob_method(method);
 724
 725         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 726                 /*
 727                  * Use pre-configured DH keys in order to be able to write the
 728                  * key hash into the OOB file.
 729                  */
 730                 wpabuf_free(wps->dh_pubkey);
 731                 wpabuf_free(wps->dh_privkey);
 732                 wps->dh_privkey = NULL;
 733                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 734                                          &wps->dh_privkey);
 735                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 736                 if (wps->dh_pubkey == NULL) {
 737                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 738                                    "Diffie-Hellman handshake");
 739                         return -1;
 740                 }
 741         }
 742
 743         if (wps_process_oob(wps, oob_dev, 1) < 0)
 744                 goto error;
 745
 746         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 747              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 748             hostapd_wps_add_pin(hapd, "any",
 749                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 750             0)
 751                 goto error;
 752
 753         return 0;
 754
 755 error:
 756         wpabuf_free(wps->dh_pubkey);
 757         wps->dh_pubkey = NULL;
 758         wpabuf_free(wps->dh_privkey);
 759         wps->dh_privkey = NULL;
 760         return -1;
 761 }
 762 #endif /* CONFIG_WPS_OOB */
 763
 764
 765 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 766                                     const u8 *ie, size_t ie_len)
 767 {
 768         struct hostapd_data *hapd = ctx;
 769         struct wpabuf *wps_ie;
 770
 771         if (hapd->wps == NULL)
 772                 return 0;
 773
 774         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 775         if (wps_ie == NULL)
 776                 return 0;
 777
 778         if (wpabuf_len(wps_ie) > 0) {
 779                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 780 #ifdef CONFIG_WPS_UPNP
 781                 /* FIX: what exactly should be included in the WLANEvent?
 782                  * WPS attributes? Full ProbeReq frame? */
 783                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 784                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 785                                                 wps_ie);
 786 #endif /* CONFIG_WPS_UPNP */
 787         }
 788
 789         wpabuf_free(wps_ie);
 790
 791         return 0;
 792 }
 793
 794
 795 #ifdef CONFIG_WPS_UPNP
 796
 797 static int hostapd_rx_req_put_wlan_response(
 798         void *priv, enum upnp_wps_wlanevent_type ev_type,
 799         const u8 *mac_addr, const struct wpabuf *msg,
 800         enum wps_msg_type msg_type)
 801 {
 802         struct hostapd_data *hapd = priv;
 803         struct sta_info *sta;
 804         struct upnp_pending_message *p;
 805
 806         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 807                    MACSTR, ev_type, MAC2STR(mac_addr));
 808         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 809                     wpabuf_head(msg), wpabuf_len(msg));
 810         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 811                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 812                            "PutWLANResponse WLANEventType %d", ev_type);
 813                 return -1;
 814         }
 815
 816         /*
 817          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 818          * server implementation for delivery to the peer.
 819          */
 820
 821         sta = ap_get_sta(hapd, mac_addr);
 822         if (!sta) {
 823                 /*
 824                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 825                  * Pick STA that is in an ongoing WPS registration without
 826                  * checking the MAC address.
 827                  */
 828                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 829                            "on NewWLANEventMAC; try wildcard match");
 830                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 831                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 832                                 break;
 833                 }
 834         }
 835
 836         if (!sta) {
 837                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 838                 return 0;
 839         }
 840
 841         p = os_zalloc(sizeof(*p));
 842         if (p == NULL)
 843                 return -1;
 844         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 845         p->msg = wpabuf_dup(msg);
 846         p->type = msg_type;
 847         p->next = hapd->wps->upnp_msgs;
 848         hapd->wps->upnp_msgs = p;
 849
 850         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 851 }
 852
 853
 854 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
 855                                  struct wps_context *wps)
 856 {
 857         struct upnp_wps_device_ctx *ctx;
 858
 859         if (!hapd->conf->upnp_iface)
 860                 return 0;
 861         ctx = os_zalloc(sizeof(*ctx));
 862         if (ctx == NULL)
 863                 return -1;
 864
 865         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
 866         if (hapd->conf->ap_pin)
 867                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
 868
 869         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
 870         if (hapd->wps_upnp == NULL) {
 871                 os_free(ctx);
 872                 return -1;
 873         }
 874         wps->wps_upnp = hapd->wps_upnp;
 875
 876         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
 877                 upnp_wps_device_deinit(hapd->wps_upnp);
 878                 hapd->wps_upnp = NULL;
 879                 return -1;
 880         }
 881
 882         return 0;
 883 }
 884
 885
 886 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
 887 {
 888         upnp_wps_device_deinit(hapd->wps_upnp);
 889 }
 890
 891 #endif /* CONFIG_WPS_UPNP */
 892
 893
 894 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
 895                             char *buf, size_t buflen)
 896 {
 897         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
 898 }