git.maemo.org Git - wpasupplicant/blob - hostapd/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008, 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 "includes.h"
  16
  17 #include "hostapd.h"
  18 #include "driver_i.h"
  19 #include "eloop.h"
  20 #include "uuid.h"
  21 #include "wpa_ctrl.h"
  22 #include "ieee802_11_defs.h"
  23 #include "sta_info.h"
  24 #include "eapol_sm.h"
  25 #include "wps/wps.h"
  26 #include "wps/wps_defs.h"
  27 #include "wps/wps_dev_attr.h"
  28 #include "wps_hostapd.h"
  29 #include "dh_groups.h"
  30
  31
  32 #ifdef CONFIG_WPS_UPNP
  33 #include "wps/wps_upnp.h"
  34 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  35                                  struct wps_context *wps);
  36 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  37 #endif /* CONFIG_WPS_UPNP */
  38
  39
  40 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  41                                   size_t psk_len)
  42 {
  43         struct hostapd_data *hapd = ctx;
  44         struct hostapd_wpa_psk *p;
  45         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  46
  47         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  48                    MACSTR, MAC2STR(mac_addr));
  49         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  50
  51         if (psk_len != PMK_LEN) {
  52                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  53                            (unsigned long) psk_len);
  54                 return -1;
  55         }
  56
  57         /* Add the new PSK to runtime PSK list */
  58         p = os_zalloc(sizeof(*p));
  59         if (p == NULL)
  60                 return -1;
  61         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  62         os_memcpy(p->psk, psk, PMK_LEN);
  63
  64         p->next = ssid->wpa_psk;
  65         ssid->wpa_psk = p;
  66
  67         if (ssid->wpa_psk_file) {
  68                 FILE *f;
  69                 char hex[PMK_LEN * 2 + 1];
  70                 /* Add the new PSK to PSK list file */
  71                 f = fopen(ssid->wpa_psk_file, "a");
  72                 if (f == NULL) {
  73                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  74                                    "'%s'", ssid->wpa_psk_file);
  75                         return -1;
  76                 }
  77
  78                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  79                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  80                 fclose(f);
  81         }
  82
  83         return 0;
  84 }
  85
  86
  87 static int hostapd_wps_set_ie_cb(void *ctx, const u8 *beacon_ie,
  88                                  size_t beacon_ie_len, const u8 *probe_resp_ie,
  89                                  size_t probe_resp_ie_len)
  90 {
  91         struct hostapd_data *hapd = ctx;
  92
  93         os_free(hapd->wps_beacon_ie);
  94         if (beacon_ie_len == 0) {
  95                 hapd->wps_beacon_ie = NULL;
  96                 hapd->wps_beacon_ie_len = 0;
  97         } else {
  98                 hapd->wps_beacon_ie = os_malloc(beacon_ie_len);
  99                 if (hapd->wps_beacon_ie == NULL) {
 100                         hapd->wps_beacon_ie_len = 0;
 101                         return -1;
 102                 }
 103                 os_memcpy(hapd->wps_beacon_ie, beacon_ie, beacon_ie_len);
 104                 hapd->wps_beacon_ie_len = beacon_ie_len;
 105         }
 106         hostapd_set_wps_beacon_ie(hapd, hapd->wps_beacon_ie,
 107                                   hapd->wps_beacon_ie_len);
 108
 109         os_free(hapd->wps_probe_resp_ie);
 110         if (probe_resp_ie_len == 0) {
 111                 hapd->wps_probe_resp_ie = NULL;
 112                 hapd->wps_probe_resp_ie_len = 0;
 113         } else {
 114                 hapd->wps_probe_resp_ie = os_malloc(probe_resp_ie_len);
 115                 if (hapd->wps_probe_resp_ie == NULL) {
 116                         hapd->wps_probe_resp_ie_len = 0;
 117                         return -1;
 118                 }
 119                 os_memcpy(hapd->wps_probe_resp_ie, probe_resp_ie,
 120                           probe_resp_ie_len);
 121                 hapd->wps_probe_resp_ie_len = probe_resp_ie_len;
 122         }
 123         hostapd_set_wps_probe_resp_ie(hapd, hapd->wps_probe_resp_ie,
 124                                       hapd->wps_probe_resp_ie_len);
 125
 126         return 0;
 127 }
 128
 129
 130 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 131                                       const struct wps_device_data *dev)
 132 {
 133         struct hostapd_data *hapd = ctx;
 134         char uuid[40], txt[400];
 135         int len;
 136         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 137                 return;
 138         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 139         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 140                           "%s " MACSTR " [%s|%s|%s|%s|%s|%d-%08X-%d]",
 141                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 142                           dev->manufacturer, dev->model_name,
 143                           dev->model_number, dev->serial_number,
 144                           dev->categ, dev->oui, dev->sub_categ);
 145         if (len > 0 && len < (int) sizeof(txt))
 146                 wpa_msg(hapd, MSG_INFO, "%s", txt);
 147
 148         if (hapd->conf->wps_pin_requests) {
 149                 FILE *f;
 150                 struct os_time t;
 151                 f = fopen(hapd->conf->wps_pin_requests, "a");
 152                 if (f == NULL)
 153                         return;
 154                 os_get_time(&t);
 155                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 156                         "\t%d-%08X-%d\n",
 157                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 158                         dev->manufacturer, dev->model_name, dev->model_number,
 159                         dev->serial_number,
 160                         dev->categ, dev->oui, dev->sub_categ);
 161                 fclose(f);
 162         }
 163 }
 164
 165
 166 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 167                                        const u8 *uuid_e)
 168 {
 169         struct hostapd_data *hapd = ctx;
 170         char uuid[40];
 171         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 172                 return;
 173         wpa_msg(hapd, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 174                 MAC2STR(mac_addr), uuid);
 175 }
 176
 177
 178 static int str_starts(const char *str, const char *start)
 179 {
 180         return os_strncmp(str, start, os_strlen(start)) == 0;
 181 }
 182
 183
 184 static void wps_reload_config(void *eloop_data, void *user_ctx)
 185 {
 186         struct hostapd_iface *iface = eloop_data;
 187
 188         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 189         if (hostapd_reload_config(iface) < 0) {
 190                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 191                            "configuration");
 192         }
 193 }
 194
 195
 196 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 197 {
 198         struct hostapd_data *hapd = ctx;
 199         FILE *oconf, *nconf;
 200         size_t len, i;
 201         char *tmp_fname;
 202         char buf[1024];
 203         int multi_bss;
 204         int wpa;
 205
 206         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 207                         cred->cred_attr, cred->cred_attr_len);
 208
 209         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 210         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 211         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 212                    cred->auth_type);
 213         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 214         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 215         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 216                         cred->key, cred->key_len);
 217         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 218                    MAC2STR(cred->mac_addr));
 219
 220         if ((hapd->conf->wps_cred_processing == 1 ||
 221              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 222                 size_t blen = cred->cred_attr_len * 2 + 1;
 223                 char *buf = os_malloc(blen);
 224                 if (buf) {
 225                         wpa_snprintf_hex(buf, blen,
 226                                          cred->cred_attr, cred->cred_attr_len);
 227                         wpa_msg(hapd, MSG_INFO, "%s%s",
 228                                 WPS_EVENT_NEW_AP_SETTINGS, buf);
 229                         os_free(buf);
 230                 }
 231         } else
 232                 wpa_msg(hapd, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 233
 234         if (hapd->conf->wps_cred_processing == 1)
 235                 return 0;
 236
 237         len = os_strlen(hapd->iface->config_fname) + 5;
 238         tmp_fname = os_malloc(len);
 239         if (tmp_fname == NULL)
 240                 return -1;
 241         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 242
 243         oconf = fopen(hapd->iface->config_fname, "r");
 244         if (oconf == NULL) {
 245                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 246                            "configuration file");
 247                 os_free(tmp_fname);
 248                 return -1;
 249         }
 250
 251         nconf = fopen(tmp_fname, "w");
 252         if (nconf == NULL) {
 253                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 254                            "configuration file");
 255                 os_free(tmp_fname);
 256                 fclose(oconf);
 257                 return -1;
 258         }
 259
 260         fprintf(nconf, "# WPS configuration - START\n");
 261
 262         fprintf(nconf, "wps_state=2\n");
 263
 264         fprintf(nconf, "ssid=");
 265         for (i = 0; i < cred->ssid_len; i++)
 266                 fputc(cred->ssid[i], nconf);
 267         fprintf(nconf, "\n");
 268
 269         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 270             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 271                 wpa = 3;
 272         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 273                 wpa = 2;
 274         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 275                 wpa = 1;
 276         else
 277                 wpa = 0;
 278
 279         if (wpa) {
 280                 char *prefix;
 281                 fprintf(nconf, "wpa=%d\n", wpa);
 282
 283                 fprintf(nconf, "wpa_key_mgmt=");
 284                 prefix = "";
 285                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 286                         fprintf(nconf, "WPA-EAP");
 287                         prefix = " ";
 288                 }
 289                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 290                         fprintf(nconf, "%sWPA-PSK", prefix);
 291                 fprintf(nconf, "\n");
 292
 293                 fprintf(nconf, "wpa_pairwise=");
 294                 prefix = "";
 295                 if (cred->encr_type & WPS_ENCR_AES) {
 296                         fprintf(nconf, "CCMP");
 297                         prefix = " ";
 298                 }
 299                 if (cred->encr_type & WPS_ENCR_TKIP) {
 300                         fprintf(nconf, "%sTKIP", prefix);
 301                 }
 302                 fprintf(nconf, "\n");
 303
 304                 if (cred->key_len >= 8 && cred->key_len < 64) {
 305                         fprintf(nconf, "wpa_passphrase=");
 306                         for (i = 0; i < cred->key_len; i++)
 307                                 fputc(cred->key[i], nconf);
 308                         fprintf(nconf, "\n");
 309                 } else if (cred->key_len == 64) {
 310                         fprintf(nconf, "wpa_psk=");
 311                         for (i = 0; i < cred->key_len; i++)
 312                                 fputc(cred->key[i], nconf);
 313                         fprintf(nconf, "\n");
 314                 } else {
 315                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 316                                    "for WPA/WPA2",
 317                                    (unsigned long) cred->key_len);
 318                 }
 319
 320                 fprintf(nconf, "auth_algs=1\n");
 321         } else {
 322                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 323                     (cred->auth_type & WPS_AUTH_SHARED))
 324                         fprintf(nconf, "auth_algs=3\n");
 325                 else if (cred->auth_type & WPS_AUTH_SHARED)
 326                         fprintf(nconf, "auth_algs=2\n");
 327                 else
 328                         fprintf(nconf, "auth_algs=1\n");
 329
 330                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 331                         int key_idx = cred->key_idx;
 332                         if (key_idx)
 333                                 key_idx--;
 334                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 335                         fprintf(nconf, "wep_key%d=", key_idx);
 336                         if (cred->key_len == 10 || cred->key_len == 26) {
 337                                 /* WEP key as a hex string */
 338                                 for (i = 0; i < cred->key_len; i++)
 339                                         fputc(cred->key[i], nconf);
 340                         } else {
 341                                 /* Raw WEP key; convert to hex */
 342                                 for (i = 0; i < cred->key_len; i++)
 343                                         fprintf(nconf, "%02x", cred->key[i]);
 344                         }
 345                         fprintf(nconf, "\n");
 346                 }
 347         }
 348
 349         fprintf(nconf, "# WPS configuration - END\n");
 350
 351         multi_bss = 0;
 352         while (fgets(buf, sizeof(buf), oconf)) {
 353                 if (os_strncmp(buf, "bss=", 4) == 0)
 354                         multi_bss = 1;
 355                 if (!multi_bss &&
 356                     (str_starts(buf, "ssid=") ||
 357                      str_starts(buf, "auth_algs=") ||
 358                      str_starts(buf, "wps_state=") ||
 359                      str_starts(buf, "wpa=") ||
 360                      str_starts(buf, "wpa_psk=") ||
 361                      str_starts(buf, "wpa_pairwise=") ||
 362                      str_starts(buf, "rsn_pairwise=") ||
 363                      str_starts(buf, "wpa_key_mgmt=") ||
 364                      str_starts(buf, "wpa_passphrase="))) {
 365                         fprintf(nconf, "#WPS# %s", buf);
 366                 } else
 367                         fprintf(nconf, "%s", buf);
 368         }
 369
 370         fclose(nconf);
 371         fclose(oconf);
 372
 373         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 374                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 375                            "configuration file: %s", strerror(errno));
 376                 os_free(tmp_fname);
 377                 return -1;
 378         }
 379
 380         os_free(tmp_fname);
 381
 382         /* Schedule configuration reload after short period of time to allow
 383          * EAP-WSC to be finished.
 384          */
 385         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 386                                NULL);
 387
 388         /* TODO: dualband AP may need to update multiple configuration files */
 389
 390         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 391
 392         return 0;
 393 }
 394
 395
 396 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 397                                   struct wps_event_pwd_auth_fail *data)
 398 {
 399         FILE *f;
 400
 401         if (!data->enrollee)
 402                 return;
 403
 404         /*
 405          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 406          * if this happens multiple times.
 407          */
 408         hapd->ap_pin_failures++;
 409         if (hapd->ap_pin_failures < 4)
 410                 return;
 411
 412         wpa_msg(hapd, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 413         hapd->wps->ap_setup_locked = 1;
 414
 415         wps_registrar_update_ie(hapd->wps->registrar);
 416
 417         if (hapd->conf->wps_cred_processing == 1)
 418                 return;
 419
 420         f = fopen(hapd->iface->config_fname, "a");
 421         if (f == NULL) {
 422                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 423                            "configuration file");
 424                 return;
 425         }
 426
 427         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 428         fprintf(f, "ap_setup_locked=1\n");
 429         fclose(f);
 430
 431         /* TODO: dualband AP may need to update multiple configuration files */
 432
 433         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 434 }
 435
 436
 437 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 438                                  union wps_event_data *data)
 439 {
 440         struct hostapd_data *hapd = ctx;
 441
 442         if (event == WPS_EV_PWD_AUTH_FAIL)
 443                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 444 }
 445
 446
 447 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 448 {
 449         os_free(hapd->wps_beacon_ie);
 450         hapd->wps_beacon_ie = NULL;
 451         hapd->wps_beacon_ie_len = 0;
 452         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 453
 454         os_free(hapd->wps_probe_resp_ie);
 455         hapd->wps_probe_resp_ie = NULL;
 456         hapd->wps_probe_resp_ie_len = 0;
 457         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 458 }
 459
 460
 461 int hostapd_init_wps(struct hostapd_data *hapd,
 462                      struct hostapd_bss_config *conf)
 463 {
 464         struct wps_context *wps;
 465         struct wps_registrar_config cfg;
 466
 467         if (conf->wps_state == 0) {
 468                 hostapd_wps_clear_ies(hapd);
 469                 return 0;
 470         }
 471
 472         wps = os_zalloc(sizeof(*wps));
 473         if (wps == NULL)
 474                 return -1;
 475
 476         wps->cred_cb = hostapd_wps_cred_cb;
 477         wps->event_cb = hostapd_wps_event_cb;
 478         wps->cb_ctx = hapd;
 479
 480         os_memset(&cfg, 0, sizeof(cfg));
 481         wps->wps_state = hapd->conf->wps_state;
 482         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 483         if (is_nil_uuid(hapd->conf->uuid)) {
 484                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 485                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 486                             wps->uuid, UUID_LEN);
 487         } else
 488                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 489         wps->ssid_len = hapd->conf->ssid.ssid_len;
 490         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 491         wps->ap = 1;
 492         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 493         wps->dev.device_name = hapd->conf->device_name ?
 494                 os_strdup(hapd->conf->device_name) : NULL;
 495         wps->dev.manufacturer = hapd->conf->manufacturer ?
 496                 os_strdup(hapd->conf->manufacturer) : NULL;
 497         wps->dev.model_name = hapd->conf->model_name ?
 498                 os_strdup(hapd->conf->model_name) : NULL;
 499         wps->dev.model_number = hapd->conf->model_number ?
 500                 os_strdup(hapd->conf->model_number) : NULL;
 501         wps->dev.serial_number = hapd->conf->serial_number ?
 502                 os_strdup(hapd->conf->serial_number) : NULL;
 503         if (hapd->conf->config_methods) {
 504                 char *m = hapd->conf->config_methods;
 505                 if (os_strstr(m, "label"))
 506                         wps->config_methods |= WPS_CONFIG_LABEL;
 507                 if (os_strstr(m, "display"))
 508                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 509                 if (os_strstr(m, "push_button"))
 510                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 511                 if (os_strstr(m, "keypad"))
 512                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 513         }
 514         if (hapd->conf->device_type) {
 515                 char *pos;
 516                 u8 oui[4];
 517                 /* <categ>-<OUI>-<subcateg> */
 518                 wps->dev.categ = atoi(hapd->conf->device_type);
 519                 pos = os_strchr(hapd->conf->device_type, '-');
 520                 if (pos == NULL) {
 521                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 522                         os_free(wps);
 523                         return -1;
 524                 }
 525                 pos++;
 526                 if (hexstr2bin(pos, oui, 4)) {
 527                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 528                         os_free(wps);
 529                         return -1;
 530                 }
 531                 wps->dev.oui = WPA_GET_BE32(oui);
 532                 pos = os_strchr(pos, '-');
 533                 if (pos == NULL) {
 534                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 535                         os_free(wps);
 536                         return -1;
 537                 }
 538                 pos++;
 539                 wps->dev.sub_categ = atoi(pos);
 540         }
 541         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 542         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 543                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 544
 545         if (conf->wpa & WPA_PROTO_RSN) {
 546                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 547                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 548                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 549                         wps->auth_types |= WPS_AUTH_WPA2;
 550
 551                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 552                         wps->encr_types |= WPS_ENCR_AES;
 553                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 554                         wps->encr_types |= WPS_ENCR_TKIP;
 555         }
 556
 557         if (conf->wpa & WPA_PROTO_WPA) {
 558                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 559                         wps->auth_types |= WPS_AUTH_WPAPSK;
 560                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 561                         wps->auth_types |= WPS_AUTH_WPA;
 562
 563                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 564                         wps->encr_types |= WPS_ENCR_AES;
 565                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 566                         wps->encr_types |= WPS_ENCR_TKIP;
 567         }
 568
 569         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 570                 wps->encr_types |= WPS_ENCR_NONE;
 571                 wps->auth_types |= WPS_AUTH_OPEN;
 572         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 573                 wps->encr_types |= WPS_ENCR_WEP;
 574                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 575                         wps->auth_types |= WPS_AUTH_OPEN;
 576                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 577                         wps->auth_types |= WPS_AUTH_SHARED;
 578         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 579                 wps->auth_types |= WPS_AUTH_OPEN;
 580                 if (conf->default_wep_key_len)
 581                         wps->encr_types |= WPS_ENCR_WEP;
 582                 else
 583                         wps->encr_types |= WPS_ENCR_NONE;
 584         }
 585
 586         if (conf->ssid.wpa_psk_file) {
 587                 /* Use per-device PSKs */
 588         } else if (conf->ssid.wpa_passphrase) {
 589                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 590                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 591         } else if (conf->ssid.wpa_psk) {
 592                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 593                 if (wps->network_key == NULL) {
 594                         os_free(wps);
 595                         return -1;
 596                 }
 597                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 598                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 599                 wps->network_key_len = 2 * PMK_LEN;
 600         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 601                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 602                 if (wps->network_key == NULL) {
 603                         os_free(wps);
 604                         return -1;
 605                 }
 606                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 607                           conf->ssid.wep.len[0]);
 608                 wps->network_key_len = conf->ssid.wep.len[0];
 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.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         hapd->wps = wps;
 658
 659         return 0;
 660 }
 661
 662
 663 void hostapd_deinit_wps(struct hostapd_data *hapd)
 664 {
 665         if (hapd->wps == NULL)
 666                 return;
 667 #ifdef CONFIG_WPS_UPNP
 668         hostapd_wps_upnp_deinit(hapd);
 669 #endif /* CONFIG_WPS_UPNP */
 670         wps_registrar_deinit(hapd->wps->registrar);
 671         os_free(hapd->wps->network_key);
 672         wps_device_data_free(&hapd->wps->dev);
 673         wpabuf_free(hapd->wps->dh_pubkey);
 674         wpabuf_free(hapd->wps->dh_privkey);
 675         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 676         wpabuf_free(hapd->wps->oob_conf.dev_password);
 677         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 678         os_free(hapd->wps);
 679         hapd->wps = NULL;
 680         hostapd_wps_clear_ies(hapd);
 681 }
 682
 683
 684 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 685                         const char *pin)
 686 {
 687         u8 u[UUID_LEN];
 688         int any = 0;
 689
 690         if (hapd->wps == NULL)
 691                 return -1;
 692         if (os_strcmp(uuid, "any") == 0)
 693                 any = 1;
 694         else if (uuid_str2bin(uuid, u))
 695                 return -1;
 696         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 697                                      (const u8 *) pin, os_strlen(pin));
 698 }
 699
 700
 701 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 702 {
 703         if (hapd->wps == NULL)
 704                 return -1;
 705         return wps_registrar_button_pushed(hapd->wps->registrar);
 706 }
 707
 708
 709 #ifdef CONFIG_WPS_OOB
 710 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 711                           char *path, char *method, char *name)
 712 {
 713         struct wps_context *wps = hapd->wps;
 714         struct oob_device_data *oob_dev;
 715
 716         oob_dev = wps_get_oob_device(device_type);
 717         if (oob_dev == NULL)
 718                 return -1;
 719         oob_dev->device_path = path;
 720         oob_dev->device_name = name;
 721         wps->oob_conf.oob_method = wps_get_oob_method(method);
 722
 723         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 724                 /*
 725                  * Use pre-configured DH keys in order to be able to write the
 726                  * key hash into the OOB file.
 727                  */
 728                 wpabuf_free(wps->dh_pubkey);
 729                 wpabuf_free(wps->dh_privkey);
 730                 wps->dh_privkey = NULL;
 731                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 732                                          &wps->dh_privkey);
 733                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 734                 if (wps->dh_pubkey == NULL) {
 735                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 736                                    "Diffie-Hellman handshake");
 737                         return -1;
 738                 }
 739         }
 740
 741         if (wps_process_oob(wps, oob_dev, 1) < 0)
 742                 goto error;
 743
 744         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 745              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 746             hostapd_wps_add_pin(hapd, "any",
 747                                 wpabuf_head(wps->oob_conf.dev_password)) < 0)
 748                 goto error;
 749
 750         return 0;
 751
 752 error:
 753         wpabuf_free(wps->dh_pubkey);
 754         wps->dh_pubkey = NULL;
 755         wpabuf_free(wps->dh_privkey);
 756         wps->dh_privkey = NULL;
 757         return -1;
 758 }
 759 #endif /* CONFIG_WPS_OOB */
 760
 761
 762 void hostapd_wps_probe_req_rx(struct hostapd_data *hapd, const u8 *addr,
 763                               const u8 *ie, size_t ie_len)
 764 {
 765         struct wpabuf *wps_ie;
 766         const u8 *end, *pos, *wps;
 767
 768         if (hapd->wps == NULL)
 769                 return;
 770
 771         pos = ie;
 772         end = ie + ie_len;
 773         wps = NULL;
 774
 775         while (pos + 1 < end) {
 776                 if (pos + 2 + pos[1] > end)
 777                         return;
 778                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 779                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA) {
 780                         wps = pos;
 781                         break;
 782                 }
 783                 pos += 2 + pos[1];
 784         }
 785
 786         if (wps == NULL)
 787                 return; /* No WPS IE in Probe Request */
 788
 789         wps_ie = wpabuf_alloc(ie_len);
 790         if (wps_ie == NULL)
 791                 return;
 792
 793         /* There may be multiple WPS IEs in the message, so need to concatenate
 794          * their WPS Data fields */
 795         while (pos + 1 < end) {
 796                 if (pos + 2 + pos[1] > end)
 797                         break;
 798                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 799                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA)
 800                         wpabuf_put_data(wps_ie, pos + 6, pos[1] - 4);
 801                 pos += 2 + pos[1];
 802         }
 803
 804         if (wpabuf_len(wps_ie) > 0) {
 805                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 806 #ifdef CONFIG_WPS_UPNP
 807                 /* FIX: what exactly should be included in the WLANEvent?
 808                  * WPS attributes? Full ProbeReq frame? */
 809                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 810                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 811                                                 wps_ie);
 812 #endif /* CONFIG_WPS_UPNP */
 813         }
 814
 815         wpabuf_free(wps_ie);
 816 }
 817
 818
 819 #ifdef CONFIG_WPS_UPNP
 820
 821 static struct wpabuf *
 822 hostapd_rx_req_get_device_info(void *priv, struct upnp_wps_peer *peer)
 823 {
 824         struct hostapd_data *hapd = priv;
 825         struct wps_config cfg;
 826         struct wps_data *wps;
 827         enum wsc_op_code op_code;
 828         struct wpabuf *m1;
 829
 830         /*
 831          * Request for DeviceInfo, i.e., M1 TLVs. This is a start of WPS
 832          * registration over UPnP with the AP acting as an Enrollee. It should
 833          * be noted that this is frequently used just to get the device data,
 834          * i.e., there may not be any intent to actually complete the
 835          * registration.
 836          */
 837
 838         if (peer->wps)
 839                 wps_deinit(peer->wps);
 840
 841         os_memset(&cfg, 0, sizeof(cfg));
 842         cfg.wps = hapd->wps;
 843         cfg.pin = (u8 *) hapd->conf->ap_pin;
 844         cfg.pin_len = os_strlen(hapd->conf->ap_pin);
 845         wps = wps_init(&cfg);
 846         if (wps == NULL)
 847                 return NULL;
 848
 849         m1 = wps_get_msg(wps, &op_code);
 850         if (m1 == NULL) {
 851                 wps_deinit(wps);
 852                 return NULL;
 853         }
 854
 855         peer->wps = wps;
 856
 857         return m1;
 858 }
 859
 860
 861 static struct wpabuf *
 862 hostapd_rx_req_put_message(void *priv, struct upnp_wps_peer *peer,
 863                            const struct wpabuf *msg)
 864 {
 865         enum wps_process_res res;
 866         enum wsc_op_code op_code;
 867
 868         /* PutMessage: msg = InMessage, return OutMessage */
 869         res = wps_process_msg(peer->wps, WSC_UPnP, msg);
 870         if (res == WPS_FAILURE)
 871                 return NULL;
 872         return wps_get_msg(peer->wps, &op_code);
 873 }
 874
 875
 876 static struct wpabuf *
 877 hostapd_rx_req_get_ap_settings(void *priv, const struct wpabuf *msg)
 878 {
 879         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 880         return NULL;
 881 }
 882
 883
 884 static int hostapd_rx_req_set_ap_settings(void *priv, const struct wpabuf *msg)
 885 {
 886         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 887         return -1;
 888 }
 889
 890
 891 static int hostapd_rx_req_del_ap_settings(void *priv, const struct wpabuf *msg)
 892 {
 893         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 894         return -1;
 895 }
 896
 897
 898 static struct wpabuf *
 899 hostapd_rx_req_get_sta_settings(void *priv, const struct wpabuf *msg)
 900 {
 901         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 902         return NULL;
 903 }
 904
 905
 906 static int hostapd_rx_req_set_sta_settings(void *priv,
 907                                            const struct wpabuf *msg)
 908 {
 909         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 910         return -1;
 911 }
 912
 913
 914 static int hostapd_rx_req_del_sta_settings(void *priv,
 915                                            const struct wpabuf *msg)
 916 {
 917         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 918         return -1;
 919 }
 920
 921
 922 static int hostapd_rx_req_put_wlan_response(
 923         void *priv, enum upnp_wps_wlanevent_type ev_type,
 924         const u8 *mac_addr, const struct wpabuf *msg,
 925         enum wps_msg_type msg_type)
 926 {
 927         struct hostapd_data *hapd = priv;
 928         struct sta_info *sta;
 929         struct upnp_pending_message *p;
 930
 931         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 932                    MACSTR, ev_type, MAC2STR(mac_addr));
 933         wpa_hexdump_ascii(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 934                           wpabuf_head(msg), wpabuf_len(msg));
 935         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 936                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 937                            "PutWLANResponse WLANEventType %d", ev_type);
 938                 return -1;
 939         }
 940
 941         /*
 942          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 943          * server implementation for delivery to the peer.
 944          */
 945
 946         sta = ap_get_sta(hapd, mac_addr);
 947         if (!sta) {
 948                 /*
 949                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 950                  * Pick STA that is in an ongoing WPS registration without
 951                  * checking the MAC address.
 952                  */
 953                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 954                            "on NewWLANEventMAC; try wildcard match");
 955                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 956                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 957                                 break;
 958                 }
 959         }
 960
 961         if (!sta) {
 962                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 963                 return 0;
 964         }
 965
 966         p = os_zalloc(sizeof(*p));
 967         if (p == NULL)
 968                 return -1;
 969         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 970         p->msg = wpabuf_dup(msg);
 971         p->type = msg_type;
 972         p->next = hapd->wps->upnp_msgs;
 973         hapd->wps->upnp_msgs = p;
 974
 975         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 976 }
 977
 978
 979 static int hostapd_rx_req_set_selected_registrar(void *priv,
 980                                                  const struct wpabuf *msg)
 981 {
 982         struct hostapd_data *hapd = priv;
 983         return wps_registrar_set_selected_registrar(hapd->wps->registrar, msg);
 984 }
 985
 986
 987 static int hostapd_rx_req_reboot_ap(void *priv, const struct wpabuf *msg)
 988 {
 989         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 990         return -1;
 991 }
 992
 993
 994 static int hostapd_rx_req_reset_ap(void *priv, const struct wpabuf *msg)
 995 {
 996         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 997         return -1;
 998 }
 999
1000
1001 static int hostapd_rx_req_reboot_sta(void *priv, const struct wpabuf *msg)
1002 {
1003         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1004         return -1;
1005 }
1006
1007
1008 static int hostapd_rx_req_reset_sta(void *priv, const struct wpabuf *msg)
1009 {
1010         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1011         return -1;
1012 }
1013
1014
1015 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1016                                  struct wps_context *wps)
1017 {
1018         struct upnp_wps_device_ctx *ctx;
1019
1020         if (!hapd->conf->upnp_iface)
1021                 return 0;
1022         ctx = os_zalloc(sizeof(*ctx));
1023         if (ctx == NULL)
1024                 return -1;
1025
1026         ctx->rx_req_get_device_info = hostapd_rx_req_get_device_info;
1027         ctx->rx_req_put_message = hostapd_rx_req_put_message;
1028         ctx->rx_req_get_ap_settings = hostapd_rx_req_get_ap_settings;
1029         ctx->rx_req_set_ap_settings = hostapd_rx_req_set_ap_settings;
1030         ctx->rx_req_del_ap_settings = hostapd_rx_req_del_ap_settings;
1031         ctx->rx_req_get_sta_settings = hostapd_rx_req_get_sta_settings;
1032         ctx->rx_req_set_sta_settings = hostapd_rx_req_set_sta_settings;
1033         ctx->rx_req_del_sta_settings = hostapd_rx_req_del_sta_settings;
1034         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1035         ctx->rx_req_set_selected_registrar =
1036                 hostapd_rx_req_set_selected_registrar;
1037         ctx->rx_req_reboot_ap = hostapd_rx_req_reboot_ap;
1038         ctx->rx_req_reset_ap = hostapd_rx_req_reset_ap;
1039         ctx->rx_req_reboot_sta = hostapd_rx_req_reboot_sta;
1040         ctx->rx_req_reset_sta = hostapd_rx_req_reset_sta;
1041
1042         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
1043         if (hapd->wps_upnp == NULL) {
1044                 os_free(ctx);
1045                 return -1;
1046         }
1047         wps->wps_upnp = hapd->wps_upnp;
1048
1049         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
1050                 upnp_wps_device_deinit(hapd->wps_upnp);
1051                 hapd->wps_upnp = NULL;
1052                 return -1;
1053         }
1054
1055         return 0;
1056 }
1057
1058
1059 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1060 {
1061         upnp_wps_device_deinit(hapd->wps_upnp);
1062 }
1063
1064 #endif /* CONFIG_WPS_UPNP */