vcs.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         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 238         hapd->wps->ssid_len = cred->ssid_len;
 239         hapd->wps->encr_types = cred->encr_type;
 240         hapd->wps->auth_types = cred->auth_type;
 241         if (cred->key == NULL) {
 242                 os_free(hapd->wps->network_key);
 243                 hapd->wps->network_key = NULL;
 244                 hapd->wps->network_key_len = 0;
 245         } else {
 246                 if (hapd->wps->network_key == NULL ||
 247                     hapd->wps->network_key_len < cred->key_len) {
 248                         hapd->wps->network_key_len = 0;
 249                         os_free(hapd->wps->network_key);
 250                         hapd->wps->network_key = os_malloc(cred->key_len);
 251                         if (hapd->wps->network_key == NULL)
 252                                 return -1;
 253                 }
 254                 hapd->wps->network_key_len = cred->key_len;
 255                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 256         }
 257         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 258
 259         len = os_strlen(hapd->iface->config_fname) + 5;
 260         tmp_fname = os_malloc(len);
 261         if (tmp_fname == NULL)
 262                 return -1;
 263         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 264
 265         oconf = fopen(hapd->iface->config_fname, "r");
 266         if (oconf == NULL) {
 267                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 268                            "configuration file");
 269                 os_free(tmp_fname);
 270                 return -1;
 271         }
 272
 273         nconf = fopen(tmp_fname, "w");
 274         if (nconf == NULL) {
 275                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 276                            "configuration file");
 277                 os_free(tmp_fname);
 278                 fclose(oconf);
 279                 return -1;
 280         }
 281
 282         fprintf(nconf, "# WPS configuration - START\n");
 283
 284         fprintf(nconf, "wps_state=2\n");
 285
 286         fprintf(nconf, "ssid=");
 287         for (i = 0; i < cred->ssid_len; i++)
 288                 fputc(cred->ssid[i], nconf);
 289         fprintf(nconf, "\n");
 290
 291         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 292             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 293                 wpa = 3;
 294         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 295                 wpa = 2;
 296         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 297                 wpa = 1;
 298         else
 299                 wpa = 0;
 300
 301         if (wpa) {
 302                 char *prefix;
 303                 fprintf(nconf, "wpa=%d\n", wpa);
 304
 305                 fprintf(nconf, "wpa_key_mgmt=");
 306                 prefix = "";
 307                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 308                         fprintf(nconf, "WPA-EAP");
 309                         prefix = " ";
 310                 }
 311                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 312                         fprintf(nconf, "%sWPA-PSK", prefix);
 313                 fprintf(nconf, "\n");
 314
 315                 fprintf(nconf, "wpa_pairwise=");
 316                 prefix = "";
 317                 if (cred->encr_type & WPS_ENCR_AES) {
 318                         fprintf(nconf, "CCMP");
 319                         prefix = " ";
 320                 }
 321                 if (cred->encr_type & WPS_ENCR_TKIP) {
 322                         fprintf(nconf, "%sTKIP", prefix);
 323                 }
 324                 fprintf(nconf, "\n");
 325
 326                 if (cred->key_len >= 8 && cred->key_len < 64) {
 327                         fprintf(nconf, "wpa_passphrase=");
 328                         for (i = 0; i < cred->key_len; i++)
 329                                 fputc(cred->key[i], nconf);
 330                         fprintf(nconf, "\n");
 331                 } else if (cred->key_len == 64) {
 332                         fprintf(nconf, "wpa_psk=");
 333                         for (i = 0; i < cred->key_len; i++)
 334                                 fputc(cred->key[i], nconf);
 335                         fprintf(nconf, "\n");
 336                 } else {
 337                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 338                                    "for WPA/WPA2",
 339                                    (unsigned long) cred->key_len);
 340                 }
 341
 342                 fprintf(nconf, "auth_algs=1\n");
 343         } else {
 344                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 345                     (cred->auth_type & WPS_AUTH_SHARED))
 346                         fprintf(nconf, "auth_algs=3\n");
 347                 else if (cred->auth_type & WPS_AUTH_SHARED)
 348                         fprintf(nconf, "auth_algs=2\n");
 349                 else
 350                         fprintf(nconf, "auth_algs=1\n");
 351
 352                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 353                         int key_idx = cred->key_idx;
 354                         if (key_idx)
 355                                 key_idx--;
 356                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 357                         fprintf(nconf, "wep_key%d=", key_idx);
 358                         if (cred->key_len == 10 || cred->key_len == 26) {
 359                                 /* WEP key as a hex string */
 360                                 for (i = 0; i < cred->key_len; i++)
 361                                         fputc(cred->key[i], nconf);
 362                         } else {
 363                                 /* Raw WEP key; convert to hex */
 364                                 for (i = 0; i < cred->key_len; i++)
 365                                         fprintf(nconf, "%02x", cred->key[i]);
 366                         }
 367                         fprintf(nconf, "\n");
 368                 }
 369         }
 370
 371         fprintf(nconf, "# WPS configuration - END\n");
 372
 373         multi_bss = 0;
 374         while (fgets(buf, sizeof(buf), oconf)) {
 375                 if (os_strncmp(buf, "bss=", 4) == 0)
 376                         multi_bss = 1;
 377                 if (!multi_bss &&
 378                     (str_starts(buf, "ssid=") ||
 379                      str_starts(buf, "auth_algs=") ||
 380                      str_starts(buf, "wps_state=") ||
 381                      str_starts(buf, "wpa=") ||
 382                      str_starts(buf, "wpa_psk=") ||
 383                      str_starts(buf, "wpa_pairwise=") ||
 384                      str_starts(buf, "rsn_pairwise=") ||
 385                      str_starts(buf, "wpa_key_mgmt=") ||
 386                      str_starts(buf, "wpa_passphrase="))) {
 387                         fprintf(nconf, "#WPS# %s", buf);
 388                 } else
 389                         fprintf(nconf, "%s", buf);
 390         }
 391
 392         fclose(nconf);
 393         fclose(oconf);
 394
 395         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 396                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 397                            "configuration file: %s", strerror(errno));
 398                 os_free(tmp_fname);
 399                 return -1;
 400         }
 401
 402         os_free(tmp_fname);
 403
 404         /* Schedule configuration reload after short period of time to allow
 405          * EAP-WSC to be finished.
 406          */
 407         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 408                                NULL);
 409
 410         /* TODO: dualband AP may need to update multiple configuration files */
 411
 412         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 413
 414         return 0;
 415 }
 416
 417
 418 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 419                                   struct wps_event_pwd_auth_fail *data)
 420 {
 421         FILE *f;
 422
 423         if (!data->enrollee)
 424                 return;
 425
 426         /*
 427          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 428          * if this happens multiple times.
 429          */
 430         hapd->ap_pin_failures++;
 431         if (hapd->ap_pin_failures < 4)
 432                 return;
 433
 434         wpa_msg(hapd, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 435         hapd->wps->ap_setup_locked = 1;
 436
 437         wps_registrar_update_ie(hapd->wps->registrar);
 438
 439         if (hapd->conf->wps_cred_processing == 1)
 440                 return;
 441
 442         f = fopen(hapd->iface->config_fname, "a");
 443         if (f == NULL) {
 444                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 445                            "configuration file");
 446                 return;
 447         }
 448
 449         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 450         fprintf(f, "ap_setup_locked=1\n");
 451         fclose(f);
 452
 453         /* TODO: dualband AP may need to update multiple configuration files */
 454
 455         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 456 }
 457
 458
 459 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 460                                  union wps_event_data *data)
 461 {
 462         struct hostapd_data *hapd = ctx;
 463
 464         if (event == WPS_EV_PWD_AUTH_FAIL)
 465                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 466 }
 467
 468
 469 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 470 {
 471         os_free(hapd->wps_beacon_ie);
 472         hapd->wps_beacon_ie = NULL;
 473         hapd->wps_beacon_ie_len = 0;
 474         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 475
 476         os_free(hapd->wps_probe_resp_ie);
 477         hapd->wps_probe_resp_ie = NULL;
 478         hapd->wps_probe_resp_ie_len = 0;
 479         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 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         if (hapd->conf->config_methods) {
 526                 char *m = hapd->conf->config_methods;
 527                 if (os_strstr(m, "label"))
 528                         wps->config_methods |= WPS_CONFIG_LABEL;
 529                 if (os_strstr(m, "display"))
 530                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 531                 if (os_strstr(m, "push_button"))
 532                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 533                 if (os_strstr(m, "keypad"))
 534                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 535         }
 536         if (hapd->conf->device_type) {
 537                 char *pos;
 538                 u8 oui[4];
 539                 /* <categ>-<OUI>-<subcateg> */
 540                 wps->dev.categ = atoi(hapd->conf->device_type);
 541                 pos = os_strchr(hapd->conf->device_type, '-');
 542                 if (pos == NULL) {
 543                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 544                         os_free(wps);
 545                         return -1;
 546                 }
 547                 pos++;
 548                 if (hexstr2bin(pos, oui, 4)) {
 549                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 550                         os_free(wps);
 551                         return -1;
 552                 }
 553                 wps->dev.oui = WPA_GET_BE32(oui);
 554                 pos = os_strchr(pos, '-');
 555                 if (pos == NULL) {
 556                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 557                         os_free(wps);
 558                         return -1;
 559                 }
 560                 pos++;
 561                 wps->dev.sub_categ = atoi(pos);
 562         }
 563         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 564         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 565                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 566
 567         if (conf->wpa & WPA_PROTO_RSN) {
 568                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 569                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 570                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 571                         wps->auth_types |= WPS_AUTH_WPA2;
 572
 573                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 574                         wps->encr_types |= WPS_ENCR_AES;
 575                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 576                         wps->encr_types |= WPS_ENCR_TKIP;
 577         }
 578
 579         if (conf->wpa & WPA_PROTO_WPA) {
 580                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 581                         wps->auth_types |= WPS_AUTH_WPAPSK;
 582                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 583                         wps->auth_types |= WPS_AUTH_WPA;
 584
 585                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 586                         wps->encr_types |= WPS_ENCR_AES;
 587                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 588                         wps->encr_types |= WPS_ENCR_TKIP;
 589         }
 590
 591         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 592                 wps->encr_types |= WPS_ENCR_NONE;
 593                 wps->auth_types |= WPS_AUTH_OPEN;
 594         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 595                 wps->encr_types |= WPS_ENCR_WEP;
 596                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 597                         wps->auth_types |= WPS_AUTH_OPEN;
 598                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 599                         wps->auth_types |= WPS_AUTH_SHARED;
 600         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 601                 wps->auth_types |= WPS_AUTH_OPEN;
 602                 if (conf->default_wep_key_len)
 603                         wps->encr_types |= WPS_ENCR_WEP;
 604                 else
 605                         wps->encr_types |= WPS_ENCR_NONE;
 606         }
 607
 608         if (conf->ssid.wpa_psk_file) {
 609                 /* Use per-device PSKs */
 610         } else if (conf->ssid.wpa_passphrase) {
 611                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 612                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 613         } else if (conf->ssid.wpa_psk) {
 614                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 615                 if (wps->network_key == NULL) {
 616                         os_free(wps);
 617                         return -1;
 618                 }
 619                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 620                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 621                 wps->network_key_len = 2 * PMK_LEN;
 622         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 623                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 624                 if (wps->network_key == NULL) {
 625                         os_free(wps);
 626                         return -1;
 627                 }
 628                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 629                           conf->ssid.wep.len[0]);
 630                 wps->network_key_len = conf->ssid.wep.len[0];
 631         }
 632
 633         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 634                 /* Override parameters to enable security by default */
 635                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 636                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 637         }
 638
 639         wps->ap_settings = conf->ap_settings;
 640         wps->ap_settings_len = conf->ap_settings_len;
 641
 642         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 643         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 644         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 645         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 646         cfg.cb_ctx = hapd;
 647         cfg.skip_cred_build = conf->skip_cred_build;
 648         cfg.extra_cred = conf->extra_cred;
 649         cfg.extra_cred_len = conf->extra_cred_len;
 650         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 651                 conf->skip_cred_build;
 652         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 653                 cfg.static_wep_only = 1;
 654
 655         wps->registrar = wps_registrar_init(wps, &cfg);
 656         if (wps->registrar == NULL) {
 657                 printf("Failed to initialize WPS Registrar\n");
 658                 os_free(wps->network_key);
 659                 os_free(wps);
 660                 return -1;
 661         }
 662
 663 #ifdef CONFIG_WPS_UPNP
 664         wps->friendly_name = hapd->conf->friendly_name;
 665         wps->manufacturer_url = hapd->conf->manufacturer_url;
 666         wps->model_description = hapd->conf->model_description;
 667         wps->model_url = hapd->conf->model_url;
 668         wps->upc = hapd->conf->upc;
 669
 670         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 671                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 672                 wps_registrar_deinit(wps->registrar);
 673                 os_free(wps->network_key);
 674                 os_free(wps);
 675                 return -1;
 676         }
 677 #endif /* CONFIG_WPS_UPNP */
 678
 679         hapd->wps = wps;
 680
 681         return 0;
 682 }
 683
 684
 685 void hostapd_deinit_wps(struct hostapd_data *hapd)
 686 {
 687         if (hapd->wps == NULL)
 688                 return;
 689 #ifdef CONFIG_WPS_UPNP
 690         hostapd_wps_upnp_deinit(hapd);
 691 #endif /* CONFIG_WPS_UPNP */
 692         wps_registrar_deinit(hapd->wps->registrar);
 693         os_free(hapd->wps->network_key);
 694         wps_device_data_free(&hapd->wps->dev);
 695         wpabuf_free(hapd->wps->dh_pubkey);
 696         wpabuf_free(hapd->wps->dh_privkey);
 697         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 698         wpabuf_free(hapd->wps->oob_conf.dev_password);
 699         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 700         os_free(hapd->wps);
 701         hapd->wps = NULL;
 702         hostapd_wps_clear_ies(hapd);
 703 }
 704
 705
 706 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 707                         const char *pin, int timeout)
 708 {
 709         u8 u[UUID_LEN];
 710         int any = 0;
 711
 712         if (hapd->wps == NULL)
 713                 return -1;
 714         if (os_strcmp(uuid, "any") == 0)
 715                 any = 1;
 716         else if (uuid_str2bin(uuid, u))
 717                 return -1;
 718         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 719                                      (const u8 *) pin, os_strlen(pin),
 720                                      timeout);
 721 }
 722
 723
 724 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 725 {
 726         if (hapd->wps == NULL)
 727                 return -1;
 728         return wps_registrar_button_pushed(hapd->wps->registrar);
 729 }
 730
 731
 732 #ifdef CONFIG_WPS_OOB
 733 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 734                           char *path, char *method, char *name)
 735 {
 736         struct wps_context *wps = hapd->wps;
 737         struct oob_device_data *oob_dev;
 738
 739         oob_dev = wps_get_oob_device(device_type);
 740         if (oob_dev == NULL)
 741                 return -1;
 742         oob_dev->device_path = path;
 743         oob_dev->device_name = name;
 744         wps->oob_conf.oob_method = wps_get_oob_method(method);
 745
 746         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 747                 /*
 748                  * Use pre-configured DH keys in order to be able to write the
 749                  * key hash into the OOB file.
 750                  */
 751                 wpabuf_free(wps->dh_pubkey);
 752                 wpabuf_free(wps->dh_privkey);
 753                 wps->dh_privkey = NULL;
 754                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 755                                          &wps->dh_privkey);
 756                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 757                 if (wps->dh_pubkey == NULL) {
 758                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 759                                    "Diffie-Hellman handshake");
 760                         return -1;
 761                 }
 762         }
 763
 764         if (wps_process_oob(wps, oob_dev, 1) < 0)
 765                 goto error;
 766
 767         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 768              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 769             hostapd_wps_add_pin(hapd, "any",
 770                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 771             0)
 772                 goto error;
 773
 774         return 0;
 775
 776 error:
 777         wpabuf_free(wps->dh_pubkey);
 778         wps->dh_pubkey = NULL;
 779         wpabuf_free(wps->dh_privkey);
 780         wps->dh_privkey = NULL;
 781         return -1;
 782 }
 783 #endif /* CONFIG_WPS_OOB */
 784
 785
 786 void hostapd_wps_probe_req_rx(struct hostapd_data *hapd, const u8 *addr,
 787                               const u8 *ie, size_t ie_len)
 788 {
 789         struct wpabuf *wps_ie;
 790         const u8 *end, *pos, *wps;
 791
 792         if (hapd->wps == NULL)
 793                 return;
 794
 795         pos = ie;
 796         end = ie + ie_len;
 797         wps = NULL;
 798
 799         while (pos + 1 < end) {
 800                 if (pos + 2 + pos[1] > end)
 801                         return;
 802                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 803                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA) {
 804                         wps = pos;
 805                         break;
 806                 }
 807                 pos += 2 + pos[1];
 808         }
 809
 810         if (wps == NULL)
 811                 return; /* No WPS IE in Probe Request */
 812
 813         wps_ie = wpabuf_alloc(ie_len);
 814         if (wps_ie == NULL)
 815                 return;
 816
 817         /* There may be multiple WPS IEs in the message, so need to concatenate
 818          * their WPS Data fields */
 819         while (pos + 1 < end) {
 820                 if (pos + 2 + pos[1] > end)
 821                         break;
 822                 if (pos[0] == WLAN_EID_VENDOR_SPECIFIC && pos[1] >= 4 &&
 823                     WPA_GET_BE32(&pos[2]) == WPS_DEV_OUI_WFA)
 824                         wpabuf_put_data(wps_ie, pos + 6, pos[1] - 4);
 825                 pos += 2 + pos[1];
 826         }
 827
 828         if (wpabuf_len(wps_ie) > 0) {
 829                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 830 #ifdef CONFIG_WPS_UPNP
 831                 /* FIX: what exactly should be included in the WLANEvent?
 832                  * WPS attributes? Full ProbeReq frame? */
 833                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 834                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 835                                                 wps_ie);
 836 #endif /* CONFIG_WPS_UPNP */
 837         }
 838
 839         wpabuf_free(wps_ie);
 840 }
 841
 842
 843 #ifdef CONFIG_WPS_UPNP
 844
 845 static struct wpabuf *
 846 hostapd_rx_req_get_device_info(void *priv, struct upnp_wps_peer *peer)
 847 {
 848         struct hostapd_data *hapd = priv;
 849         struct wps_config cfg;
 850         struct wps_data *wps;
 851         enum wsc_op_code op_code;
 852         struct wpabuf *m1;
 853
 854         /*
 855          * Request for DeviceInfo, i.e., M1 TLVs. This is a start of WPS
 856          * registration over UPnP with the AP acting as an Enrollee. It should
 857          * be noted that this is frequently used just to get the device data,
 858          * i.e., there may not be any intent to actually complete the
 859          * registration.
 860          */
 861
 862         if (peer->wps)
 863                 wps_deinit(peer->wps);
 864
 865         os_memset(&cfg, 0, sizeof(cfg));
 866         cfg.wps = hapd->wps;
 867         cfg.pin = (u8 *) hapd->conf->ap_pin;
 868         cfg.pin_len = os_strlen(hapd->conf->ap_pin);
 869         wps = wps_init(&cfg);
 870         if (wps == NULL)
 871                 return NULL;
 872
 873         m1 = wps_get_msg(wps, &op_code);
 874         if (m1 == NULL) {
 875                 wps_deinit(wps);
 876                 return NULL;
 877         }
 878
 879         peer->wps = wps;
 880
 881         return m1;
 882 }
 883
 884
 885 static struct wpabuf *
 886 hostapd_rx_req_put_message(void *priv, struct upnp_wps_peer *peer,
 887                            const struct wpabuf *msg)
 888 {
 889         enum wps_process_res res;
 890         enum wsc_op_code op_code;
 891
 892         /* PutMessage: msg = InMessage, return OutMessage */
 893         res = wps_process_msg(peer->wps, WSC_UPnP, msg);
 894         if (res == WPS_FAILURE)
 895                 return NULL;
 896         return wps_get_msg(peer->wps, &op_code);
 897 }
 898
 899
 900 static struct wpabuf *
 901 hostapd_rx_req_get_ap_settings(void *priv, const struct wpabuf *msg)
 902 {
 903         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 904         return NULL;
 905 }
 906
 907
 908 static int hostapd_rx_req_set_ap_settings(void *priv, const struct wpabuf *msg)
 909 {
 910         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 911         return -1;
 912 }
 913
 914
 915 static int hostapd_rx_req_del_ap_settings(void *priv, const struct wpabuf *msg)
 916 {
 917         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 918         return -1;
 919 }
 920
 921
 922 static struct wpabuf *
 923 hostapd_rx_req_get_sta_settings(void *priv, const struct wpabuf *msg)
 924 {
 925         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 926         return NULL;
 927 }
 928
 929
 930 static int hostapd_rx_req_set_sta_settings(void *priv,
 931                                            const struct wpabuf *msg)
 932 {
 933         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 934         return -1;
 935 }
 936
 937
 938 static int hostapd_rx_req_del_sta_settings(void *priv,
 939                                            const struct wpabuf *msg)
 940 {
 941         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 942         return -1;
 943 }
 944
 945
 946 static int hostapd_rx_req_put_wlan_response(
 947         void *priv, enum upnp_wps_wlanevent_type ev_type,
 948         const u8 *mac_addr, const struct wpabuf *msg,
 949         enum wps_msg_type msg_type)
 950 {
 951         struct hostapd_data *hapd = priv;
 952         struct sta_info *sta;
 953         struct upnp_pending_message *p;
 954
 955         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 956                    MACSTR, ev_type, MAC2STR(mac_addr));
 957         wpa_hexdump_ascii(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 958                           wpabuf_head(msg), wpabuf_len(msg));
 959         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 960                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 961                            "PutWLANResponse WLANEventType %d", ev_type);
 962                 return -1;
 963         }
 964
 965         /*
 966          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 967          * server implementation for delivery to the peer.
 968          */
 969
 970         sta = ap_get_sta(hapd, mac_addr);
 971         if (!sta) {
 972                 /*
 973                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 974                  * Pick STA that is in an ongoing WPS registration without
 975                  * checking the MAC address.
 976                  */
 977                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 978                            "on NewWLANEventMAC; try wildcard match");
 979                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 980                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 981                                 break;
 982                 }
 983         }
 984
 985         if (!sta) {
 986                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 987                 return 0;
 988         }
 989
 990         p = os_zalloc(sizeof(*p));
 991         if (p == NULL)
 992                 return -1;
 993         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 994         p->msg = wpabuf_dup(msg);
 995         p->type = msg_type;
 996         p->next = hapd->wps->upnp_msgs;
 997         hapd->wps->upnp_msgs = p;
 998
 999         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1000 }
1001
1002
1003 static int hostapd_rx_req_set_selected_registrar(void *priv,
1004                                                  const struct wpabuf *msg)
1005 {
1006         struct hostapd_data *hapd = priv;
1007         return wps_registrar_set_selected_registrar(hapd->wps->registrar, msg);
1008 }
1009
1010
1011 static int hostapd_rx_req_reboot_ap(void *priv, const struct wpabuf *msg)
1012 {
1013         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1014         return -1;
1015 }
1016
1017
1018 static int hostapd_rx_req_reset_ap(void *priv, const struct wpabuf *msg)
1019 {
1020         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1021         return -1;
1022 }
1023
1024
1025 static int hostapd_rx_req_reboot_sta(void *priv, const struct wpabuf *msg)
1026 {
1027         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1028         return -1;
1029 }
1030
1031
1032 static int hostapd_rx_req_reset_sta(void *priv, const struct wpabuf *msg)
1033 {
1034         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1035         return -1;
1036 }
1037
1038
1039 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1040                                  struct wps_context *wps)
1041 {
1042         struct upnp_wps_device_ctx *ctx;
1043
1044         if (!hapd->conf->upnp_iface)
1045                 return 0;
1046         ctx = os_zalloc(sizeof(*ctx));
1047         if (ctx == NULL)
1048                 return -1;
1049
1050         ctx->rx_req_get_device_info = hostapd_rx_req_get_device_info;
1051         ctx->rx_req_put_message = hostapd_rx_req_put_message;
1052         ctx->rx_req_get_ap_settings = hostapd_rx_req_get_ap_settings;
1053         ctx->rx_req_set_ap_settings = hostapd_rx_req_set_ap_settings;
1054         ctx->rx_req_del_ap_settings = hostapd_rx_req_del_ap_settings;
1055         ctx->rx_req_get_sta_settings = hostapd_rx_req_get_sta_settings;
1056         ctx->rx_req_set_sta_settings = hostapd_rx_req_set_sta_settings;
1057         ctx->rx_req_del_sta_settings = hostapd_rx_req_del_sta_settings;
1058         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1059         ctx->rx_req_set_selected_registrar =
1060                 hostapd_rx_req_set_selected_registrar;
1061         ctx->rx_req_reboot_ap = hostapd_rx_req_reboot_ap;
1062         ctx->rx_req_reset_ap = hostapd_rx_req_reset_ap;
1063         ctx->rx_req_reboot_sta = hostapd_rx_req_reboot_sta;
1064         ctx->rx_req_reset_sta = hostapd_rx_req_reset_sta;
1065
1066         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
1067         if (hapd->wps_upnp == NULL) {
1068                 os_free(ctx);
1069                 return -1;
1070         }
1071         wps->wps_upnp = hapd->wps_upnp;
1072
1073         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
1074                 upnp_wps_device_deinit(hapd->wps_upnp);
1075                 hapd->wps_upnp = NULL;
1076                 return -1;
1077         }
1078
1079         return 0;
1080 }
1081
1082
1083 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1084 {
1085         upnp_wps_device_deinit(hapd->wps_upnp);
1086 }
1087
1088 #endif /* CONFIG_WPS_UPNP */