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 "ieee802_11_common.h"
  24 #include "sta_info.h"
  25 #include "eapol_sm.h"
  26 #include "wps/wps.h"
  27 #include "wps/wps_defs.h"
  28 #include "wps/wps_dev_attr.h"
  29 #include "wps_hostapd.h"
  30 #include "dh_groups.h"
  31
  32
  33 #ifdef CONFIG_WPS_UPNP
  34 #include "wps/wps_upnp.h"
  35 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  36                                  struct wps_context *wps);
  37 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  38 #endif /* CONFIG_WPS_UPNP */
  39
  40 static void hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
  41                                      const u8 *ie, size_t ie_len);
  42
  43
  44 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  45                                   size_t psk_len)
  46 {
  47         struct hostapd_data *hapd = ctx;
  48         struct hostapd_wpa_psk *p;
  49         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  50
  51         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  52                    MACSTR, MAC2STR(mac_addr));
  53         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  54
  55         if (psk_len != PMK_LEN) {
  56                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  57                            (unsigned long) psk_len);
  58                 return -1;
  59         }
  60
  61         /* Add the new PSK to runtime PSK list */
  62         p = os_zalloc(sizeof(*p));
  63         if (p == NULL)
  64                 return -1;
  65         os_memcpy(p->addr, mac_addr, ETH_ALEN);
  66         os_memcpy(p->psk, psk, PMK_LEN);
  67
  68         p->next = ssid->wpa_psk;
  69         ssid->wpa_psk = p;
  70
  71         if (ssid->wpa_psk_file) {
  72                 FILE *f;
  73                 char hex[PMK_LEN * 2 + 1];
  74                 /* Add the new PSK to PSK list file */
  75                 f = fopen(ssid->wpa_psk_file, "a");
  76                 if (f == NULL) {
  77                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
  78                                    "'%s'", ssid->wpa_psk_file);
  79                         return -1;
  80                 }
  81
  82                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
  83                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
  84                 fclose(f);
  85         }
  86
  87         return 0;
  88 }
  89
  90
  91 static int hostapd_wps_set_ie_cb(void *ctx, const u8 *beacon_ie,
  92                                  size_t beacon_ie_len, const u8 *probe_resp_ie,
  93                                  size_t probe_resp_ie_len)
  94 {
  95         struct hostapd_data *hapd = ctx;
  96
  97         os_free(hapd->wps_beacon_ie);
  98         if (beacon_ie_len == 0) {
  99                 hapd->wps_beacon_ie = NULL;
 100                 hapd->wps_beacon_ie_len = 0;
 101         } else {
 102                 hapd->wps_beacon_ie = os_malloc(beacon_ie_len);
 103                 if (hapd->wps_beacon_ie == NULL) {
 104                         hapd->wps_beacon_ie_len = 0;
 105                         return -1;
 106                 }
 107                 os_memcpy(hapd->wps_beacon_ie, beacon_ie, beacon_ie_len);
 108                 hapd->wps_beacon_ie_len = beacon_ie_len;
 109         }
 110         hostapd_set_wps_beacon_ie(hapd, hapd->wps_beacon_ie,
 111                                   hapd->wps_beacon_ie_len);
 112
 113         os_free(hapd->wps_probe_resp_ie);
 114         if (probe_resp_ie_len == 0) {
 115                 hapd->wps_probe_resp_ie = NULL;
 116                 hapd->wps_probe_resp_ie_len = 0;
 117         } else {
 118                 hapd->wps_probe_resp_ie = os_malloc(probe_resp_ie_len);
 119                 if (hapd->wps_probe_resp_ie == NULL) {
 120                         hapd->wps_probe_resp_ie_len = 0;
 121                         return -1;
 122                 }
 123                 os_memcpy(hapd->wps_probe_resp_ie, probe_resp_ie,
 124                           probe_resp_ie_len);
 125                 hapd->wps_probe_resp_ie_len = probe_resp_ie_len;
 126         }
 127         hostapd_set_wps_probe_resp_ie(hapd, hapd->wps_probe_resp_ie,
 128                                       hapd->wps_probe_resp_ie_len);
 129
 130         return 0;
 131 }
 132
 133
 134 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 135                                       const struct wps_device_data *dev)
 136 {
 137         struct hostapd_data *hapd = ctx;
 138         char uuid[40], txt[400];
 139         int len;
 140         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 141                 return;
 142         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 143         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 144                           "%s " MACSTR " [%s|%s|%s|%s|%s|%d-%08X-%d]",
 145                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 146                           dev->manufacturer, dev->model_name,
 147                           dev->model_number, dev->serial_number,
 148                           dev->categ, dev->oui, dev->sub_categ);
 149         if (len > 0 && len < (int) sizeof(txt))
 150                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 151
 152         if (hapd->conf->wps_pin_requests) {
 153                 FILE *f;
 154                 struct os_time t;
 155                 f = fopen(hapd->conf->wps_pin_requests, "a");
 156                 if (f == NULL)
 157                         return;
 158                 os_get_time(&t);
 159                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 160                         "\t%d-%08X-%d\n",
 161                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 162                         dev->manufacturer, dev->model_name, dev->model_number,
 163                         dev->serial_number,
 164                         dev->categ, dev->oui, dev->sub_categ);
 165                 fclose(f);
 166         }
 167 }
 168
 169
 170 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 171                                        const u8 *uuid_e)
 172 {
 173         struct hostapd_data *hapd = ctx;
 174         char uuid[40];
 175         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 176                 return;
 177         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 178                 MAC2STR(mac_addr), uuid);
 179 }
 180
 181
 182 static int str_starts(const char *str, const char *start)
 183 {
 184         return os_strncmp(str, start, os_strlen(start)) == 0;
 185 }
 186
 187
 188 static void wps_reload_config(void *eloop_data, void *user_ctx)
 189 {
 190         struct hostapd_iface *iface = eloop_data;
 191
 192         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 193         if (hostapd_reload_config(iface) < 0) {
 194                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 195                            "configuration");
 196         }
 197 }
 198
 199
 200 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 201 {
 202         struct hostapd_data *hapd = ctx;
 203         FILE *oconf, *nconf;
 204         size_t len, i;
 205         char *tmp_fname;
 206         char buf[1024];
 207         int multi_bss;
 208         int wpa;
 209
 210         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 211                         cred->cred_attr, cred->cred_attr_len);
 212
 213         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 214         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 215         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 216                    cred->auth_type);
 217         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 218         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 219         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 220                         cred->key, cred->key_len);
 221         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 222                    MAC2STR(cred->mac_addr));
 223
 224         if ((hapd->conf->wps_cred_processing == 1 ||
 225              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 226                 size_t blen = cred->cred_attr_len * 2 + 1;
 227                 char *_buf = os_malloc(blen);
 228                 if (_buf) {
 229                         wpa_snprintf_hex(_buf, blen,
 230                                          cred->cred_attr, cred->cred_attr_len);
 231                         wpa_msg(hapd->msg_ctx, MSG_INFO, "%s%s",
 232                                 WPS_EVENT_NEW_AP_SETTINGS, _buf);
 233                         os_free(_buf);
 234                 }
 235         } else
 236                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 237
 238         if (hapd->conf->wps_cred_processing == 1)
 239                 return 0;
 240
 241         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 242         hapd->wps->ssid_len = cred->ssid_len;
 243         hapd->wps->encr_types = cred->encr_type;
 244         hapd->wps->auth_types = cred->auth_type;
 245         if (cred->key == NULL) {
 246                 os_free(hapd->wps->network_key);
 247                 hapd->wps->network_key = NULL;
 248                 hapd->wps->network_key_len = 0;
 249         } else {
 250                 if (hapd->wps->network_key == NULL ||
 251                     hapd->wps->network_key_len < cred->key_len) {
 252                         hapd->wps->network_key_len = 0;
 253                         os_free(hapd->wps->network_key);
 254                         hapd->wps->network_key = os_malloc(cred->key_len);
 255                         if (hapd->wps->network_key == NULL)
 256                                 return -1;
 257                 }
 258                 hapd->wps->network_key_len = cred->key_len;
 259                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 260         }
 261         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 262
 263         len = os_strlen(hapd->iface->config_fname) + 5;
 264         tmp_fname = os_malloc(len);
 265         if (tmp_fname == NULL)
 266                 return -1;
 267         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 268
 269         oconf = fopen(hapd->iface->config_fname, "r");
 270         if (oconf == NULL) {
 271                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 272                            "configuration file");
 273                 os_free(tmp_fname);
 274                 return -1;
 275         }
 276
 277         nconf = fopen(tmp_fname, "w");
 278         if (nconf == NULL) {
 279                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 280                            "configuration file");
 281                 os_free(tmp_fname);
 282                 fclose(oconf);
 283                 return -1;
 284         }
 285
 286         fprintf(nconf, "# WPS configuration - START\n");
 287
 288         fprintf(nconf, "wps_state=2\n");
 289
 290         fprintf(nconf, "ssid=");
 291         for (i = 0; i < cred->ssid_len; i++)
 292                 fputc(cred->ssid[i], nconf);
 293         fprintf(nconf, "\n");
 294
 295         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 296             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 297                 wpa = 3;
 298         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 299                 wpa = 2;
 300         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 301                 wpa = 1;
 302         else
 303                 wpa = 0;
 304
 305         if (wpa) {
 306                 char *prefix;
 307                 fprintf(nconf, "wpa=%d\n", wpa);
 308
 309                 fprintf(nconf, "wpa_key_mgmt=");
 310                 prefix = "";
 311                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 312                         fprintf(nconf, "WPA-EAP");
 313                         prefix = " ";
 314                 }
 315                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 316                         fprintf(nconf, "%sWPA-PSK", prefix);
 317                 fprintf(nconf, "\n");
 318
 319                 fprintf(nconf, "wpa_pairwise=");
 320                 prefix = "";
 321                 if (cred->encr_type & WPS_ENCR_AES) {
 322                         fprintf(nconf, "CCMP");
 323                         prefix = " ";
 324                 }
 325                 if (cred->encr_type & WPS_ENCR_TKIP) {
 326                         fprintf(nconf, "%sTKIP", prefix);
 327                 }
 328                 fprintf(nconf, "\n");
 329
 330                 if (cred->key_len >= 8 && cred->key_len < 64) {
 331                         fprintf(nconf, "wpa_passphrase=");
 332                         for (i = 0; i < cred->key_len; i++)
 333                                 fputc(cred->key[i], nconf);
 334                         fprintf(nconf, "\n");
 335                 } else if (cred->key_len == 64) {
 336                         fprintf(nconf, "wpa_psk=");
 337                         for (i = 0; i < cred->key_len; i++)
 338                                 fputc(cred->key[i], nconf);
 339                         fprintf(nconf, "\n");
 340                 } else {
 341                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 342                                    "for WPA/WPA2",
 343                                    (unsigned long) cred->key_len);
 344                 }
 345
 346                 fprintf(nconf, "auth_algs=1\n");
 347         } else {
 348                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 349                     (cred->auth_type & WPS_AUTH_SHARED))
 350                         fprintf(nconf, "auth_algs=3\n");
 351                 else if (cred->auth_type & WPS_AUTH_SHARED)
 352                         fprintf(nconf, "auth_algs=2\n");
 353                 else
 354                         fprintf(nconf, "auth_algs=1\n");
 355
 356                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 357                         int key_idx = cred->key_idx;
 358                         if (key_idx)
 359                                 key_idx--;
 360                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 361                         fprintf(nconf, "wep_key%d=", key_idx);
 362                         if (cred->key_len == 10 || cred->key_len == 26) {
 363                                 /* WEP key as a hex string */
 364                                 for (i = 0; i < cred->key_len; i++)
 365                                         fputc(cred->key[i], nconf);
 366                         } else {
 367                                 /* Raw WEP key; convert to hex */
 368                                 for (i = 0; i < cred->key_len; i++)
 369                                         fprintf(nconf, "%02x", cred->key[i]);
 370                         }
 371                         fprintf(nconf, "\n");
 372                 }
 373         }
 374
 375         fprintf(nconf, "# WPS configuration - END\n");
 376
 377         multi_bss = 0;
 378         while (fgets(buf, sizeof(buf), oconf)) {
 379                 if (os_strncmp(buf, "bss=", 4) == 0)
 380                         multi_bss = 1;
 381                 if (!multi_bss &&
 382                     (str_starts(buf, "ssid=") ||
 383                      str_starts(buf, "auth_algs=") ||
 384                      str_starts(buf, "wps_state=") ||
 385                      str_starts(buf, "wpa=") ||
 386                      str_starts(buf, "wpa_psk=") ||
 387                      str_starts(buf, "wpa_pairwise=") ||
 388                      str_starts(buf, "rsn_pairwise=") ||
 389                      str_starts(buf, "wpa_key_mgmt=") ||
 390                      str_starts(buf, "wpa_passphrase="))) {
 391                         fprintf(nconf, "#WPS# %s", buf);
 392                 } else
 393                         fprintf(nconf, "%s", buf);
 394         }
 395
 396         fclose(nconf);
 397         fclose(oconf);
 398
 399         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 400                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 401                            "configuration file: %s", strerror(errno));
 402                 os_free(tmp_fname);
 403                 return -1;
 404         }
 405
 406         os_free(tmp_fname);
 407
 408         /* Schedule configuration reload after short period of time to allow
 409          * EAP-WSC to be finished.
 410          */
 411         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 412                                NULL);
 413
 414         /* TODO: dualband AP may need to update multiple configuration files */
 415
 416         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 417
 418         return 0;
 419 }
 420
 421
 422 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 423                                   struct wps_event_pwd_auth_fail *data)
 424 {
 425         FILE *f;
 426
 427         if (!data->enrollee)
 428                 return;
 429
 430         /*
 431          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 432          * if this happens multiple times.
 433          */
 434         hapd->ap_pin_failures++;
 435         if (hapd->ap_pin_failures < 4)
 436                 return;
 437
 438         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 439         hapd->wps->ap_setup_locked = 1;
 440
 441         wps_registrar_update_ie(hapd->wps->registrar);
 442
 443         if (hapd->conf->wps_cred_processing == 1)
 444                 return;
 445
 446         f = fopen(hapd->iface->config_fname, "a");
 447         if (f == NULL) {
 448                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 449                            "configuration file");
 450                 return;
 451         }
 452
 453         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 454         fprintf(f, "ap_setup_locked=1\n");
 455         fclose(f);
 456
 457         /* TODO: dualband AP may need to update multiple configuration files */
 458
 459         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 460 }
 461
 462
 463 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 464                                  union wps_event_data *data)
 465 {
 466         struct hostapd_data *hapd = ctx;
 467
 468         if (event == WPS_EV_PWD_AUTH_FAIL)
 469                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 470 }
 471
 472
 473 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 474 {
 475         os_free(hapd->wps_beacon_ie);
 476         hapd->wps_beacon_ie = NULL;
 477         hapd->wps_beacon_ie_len = 0;
 478         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 479
 480         os_free(hapd->wps_probe_resp_ie);
 481         hapd->wps_probe_resp_ie = NULL;
 482         hapd->wps_probe_resp_ie_len = 0;
 483         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 484 }
 485
 486
 487 int hostapd_init_wps(struct hostapd_data *hapd,
 488                      struct hostapd_bss_config *conf)
 489 {
 490         struct wps_context *wps;
 491         struct wps_registrar_config cfg;
 492
 493         if (conf->wps_state == 0) {
 494                 hostapd_wps_clear_ies(hapd);
 495                 return 0;
 496         }
 497
 498         wps = os_zalloc(sizeof(*wps));
 499         if (wps == NULL)
 500                 return -1;
 501
 502         wps->cred_cb = hostapd_wps_cred_cb;
 503         wps->event_cb = hostapd_wps_event_cb;
 504         wps->cb_ctx = hapd;
 505
 506         os_memset(&cfg, 0, sizeof(cfg));
 507         wps->wps_state = hapd->conf->wps_state;
 508         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 509         if (is_nil_uuid(hapd->conf->uuid)) {
 510                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 511                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 512                             wps->uuid, UUID_LEN);
 513         } else
 514                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 515         wps->ssid_len = hapd->conf->ssid.ssid_len;
 516         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 517         wps->ap = 1;
 518         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 519         wps->dev.device_name = hapd->conf->device_name ?
 520                 os_strdup(hapd->conf->device_name) : NULL;
 521         wps->dev.manufacturer = hapd->conf->manufacturer ?
 522                 os_strdup(hapd->conf->manufacturer) : NULL;
 523         wps->dev.model_name = hapd->conf->model_name ?
 524                 os_strdup(hapd->conf->model_name) : NULL;
 525         wps->dev.model_number = hapd->conf->model_number ?
 526                 os_strdup(hapd->conf->model_number) : NULL;
 527         wps->dev.serial_number = hapd->conf->serial_number ?
 528                 os_strdup(hapd->conf->serial_number) : NULL;
 529         if (hapd->conf->config_methods) {
 530                 char *m = hapd->conf->config_methods;
 531                 if (os_strstr(m, "label"))
 532                         wps->config_methods |= WPS_CONFIG_LABEL;
 533                 if (os_strstr(m, "display"))
 534                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 535                 if (os_strstr(m, "push_button"))
 536                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 537                 if (os_strstr(m, "keypad"))
 538                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 539         }
 540         if (hapd->conf->device_type) {
 541                 char *pos;
 542                 u8 oui[4];
 543                 /* <categ>-<OUI>-<subcateg> */
 544                 wps->dev.categ = atoi(hapd->conf->device_type);
 545                 pos = os_strchr(hapd->conf->device_type, '-');
 546                 if (pos == NULL) {
 547                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 548                         os_free(wps);
 549                         return -1;
 550                 }
 551                 pos++;
 552                 if (hexstr2bin(pos, oui, 4)) {
 553                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type OUI");
 554                         os_free(wps);
 555                         return -1;
 556                 }
 557                 wps->dev.oui = WPA_GET_BE32(oui);
 558                 pos = os_strchr(pos, '-');
 559                 if (pos == NULL) {
 560                         wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 561                         os_free(wps);
 562                         return -1;
 563                 }
 564                 pos++;
 565                 wps->dev.sub_categ = atoi(pos);
 566         }
 567         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 568         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 569                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 570
 571         if (conf->wpa & WPA_PROTO_RSN) {
 572                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 573                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 574                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 575                         wps->auth_types |= WPS_AUTH_WPA2;
 576
 577                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 578                         wps->encr_types |= WPS_ENCR_AES;
 579                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 580                         wps->encr_types |= WPS_ENCR_TKIP;
 581         }
 582
 583         if (conf->wpa & WPA_PROTO_WPA) {
 584                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 585                         wps->auth_types |= WPS_AUTH_WPAPSK;
 586                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 587                         wps->auth_types |= WPS_AUTH_WPA;
 588
 589                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 590                         wps->encr_types |= WPS_ENCR_AES;
 591                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 592                         wps->encr_types |= WPS_ENCR_TKIP;
 593         }
 594
 595         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 596                 wps->encr_types |= WPS_ENCR_NONE;
 597                 wps->auth_types |= WPS_AUTH_OPEN;
 598         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 599                 wps->encr_types |= WPS_ENCR_WEP;
 600                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 601                         wps->auth_types |= WPS_AUTH_OPEN;
 602                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 603                         wps->auth_types |= WPS_AUTH_SHARED;
 604         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 605                 wps->auth_types |= WPS_AUTH_OPEN;
 606                 if (conf->default_wep_key_len)
 607                         wps->encr_types |= WPS_ENCR_WEP;
 608                 else
 609                         wps->encr_types |= WPS_ENCR_NONE;
 610         }
 611
 612         if (conf->ssid.wpa_psk_file) {
 613                 /* Use per-device PSKs */
 614         } else if (conf->ssid.wpa_passphrase) {
 615                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 616                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 617         } else if (conf->ssid.wpa_psk) {
 618                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 619                 if (wps->network_key == NULL) {
 620                         os_free(wps);
 621                         return -1;
 622                 }
 623                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 624                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 625                 wps->network_key_len = 2 * PMK_LEN;
 626         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 627                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 628                 if (wps->network_key == NULL) {
 629                         os_free(wps);
 630                         return -1;
 631                 }
 632                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 633                           conf->ssid.wep.len[0]);
 634                 wps->network_key_len = conf->ssid.wep.len[0];
 635         }
 636
 637         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 638                 /* Override parameters to enable security by default */
 639                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 640                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 641         }
 642
 643         wps->ap_settings = conf->ap_settings;
 644         wps->ap_settings_len = conf->ap_settings_len;
 645
 646         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 647         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 648         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 649         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 650         cfg.cb_ctx = hapd;
 651         cfg.skip_cred_build = conf->skip_cred_build;
 652         cfg.extra_cred = conf->extra_cred;
 653         cfg.extra_cred_len = conf->extra_cred_len;
 654         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 655                 conf->skip_cred_build;
 656         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 657                 cfg.static_wep_only = 1;
 658
 659         wps->registrar = wps_registrar_init(wps, &cfg);
 660         if (wps->registrar == NULL) {
 661                 printf("Failed to initialize WPS Registrar\n");
 662                 os_free(wps->network_key);
 663                 os_free(wps);
 664                 return -1;
 665         }
 666
 667 #ifdef CONFIG_WPS_UPNP
 668         wps->friendly_name = hapd->conf->friendly_name;
 669         wps->manufacturer_url = hapd->conf->manufacturer_url;
 670         wps->model_description = hapd->conf->model_description;
 671         wps->model_url = hapd->conf->model_url;
 672         wps->upc = hapd->conf->upc;
 673
 674         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 675                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 676                 wps_registrar_deinit(wps->registrar);
 677                 os_free(wps->network_key);
 678                 os_free(wps);
 679                 return -1;
 680         }
 681 #endif /* CONFIG_WPS_UPNP */
 682
 683         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 684
 685         hapd->wps = wps;
 686
 687         return 0;
 688 }
 689
 690
 691 void hostapd_deinit_wps(struct hostapd_data *hapd)
 692 {
 693         if (hapd->wps == NULL)
 694                 return;
 695 #ifdef CONFIG_WPS_UPNP
 696         hostapd_wps_upnp_deinit(hapd);
 697 #endif /* CONFIG_WPS_UPNP */
 698         wps_registrar_deinit(hapd->wps->registrar);
 699         os_free(hapd->wps->network_key);
 700         wps_device_data_free(&hapd->wps->dev);
 701         wpabuf_free(hapd->wps->dh_pubkey);
 702         wpabuf_free(hapd->wps->dh_privkey);
 703         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 704         wpabuf_free(hapd->wps->oob_conf.dev_password);
 705         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 706         os_free(hapd->wps);
 707         hapd->wps = NULL;
 708         hostapd_wps_clear_ies(hapd);
 709 }
 710
 711
 712 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 713                         const char *pin, int timeout)
 714 {
 715         u8 u[UUID_LEN];
 716         int any = 0;
 717
 718         if (hapd->wps == NULL)
 719                 return -1;
 720         if (os_strcmp(uuid, "any") == 0)
 721                 any = 1;
 722         else if (uuid_str2bin(uuid, u))
 723                 return -1;
 724         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 725                                      (const u8 *) pin, os_strlen(pin),
 726                                      timeout);
 727 }
 728
 729
 730 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 731 {
 732         if (hapd->wps == NULL)
 733                 return -1;
 734         return wps_registrar_button_pushed(hapd->wps->registrar);
 735 }
 736
 737
 738 #ifdef CONFIG_WPS_OOB
 739 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 740                           char *path, char *method, char *name)
 741 {
 742         struct wps_context *wps = hapd->wps;
 743         struct oob_device_data *oob_dev;
 744
 745         oob_dev = wps_get_oob_device(device_type);
 746         if (oob_dev == NULL)
 747                 return -1;
 748         oob_dev->device_path = path;
 749         oob_dev->device_name = name;
 750         wps->oob_conf.oob_method = wps_get_oob_method(method);
 751
 752         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 753                 /*
 754                  * Use pre-configured DH keys in order to be able to write the
 755                  * key hash into the OOB file.
 756                  */
 757                 wpabuf_free(wps->dh_pubkey);
 758                 wpabuf_free(wps->dh_privkey);
 759                 wps->dh_privkey = NULL;
 760                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 761                                          &wps->dh_privkey);
 762                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 763                 if (wps->dh_pubkey == NULL) {
 764                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 765                                    "Diffie-Hellman handshake");
 766                         return -1;
 767                 }
 768         }
 769
 770         if (wps_process_oob(wps, oob_dev, 1) < 0)
 771                 goto error;
 772
 773         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 774              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 775             hostapd_wps_add_pin(hapd, "any",
 776                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 777             0)
 778                 goto error;
 779
 780         return 0;
 781
 782 error:
 783         wpabuf_free(wps->dh_pubkey);
 784         wps->dh_pubkey = NULL;
 785         wpabuf_free(wps->dh_privkey);
 786         wps->dh_privkey = NULL;
 787         return -1;
 788 }
 789 #endif /* CONFIG_WPS_OOB */
 790
 791
 792 static void hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 793                                      const u8 *ie, size_t ie_len)
 794 {
 795         struct hostapd_data *hapd = ctx;
 796         struct wpabuf *wps_ie;
 797
 798         if (hapd->wps == NULL)
 799                 return;
 800
 801         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 802         if (wps_ie == NULL)
 803                 return;
 804
 805         if (wpabuf_len(wps_ie) > 0) {
 806                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 807 #ifdef CONFIG_WPS_UPNP
 808                 /* FIX: what exactly should be included in the WLANEvent?
 809                  * WPS attributes? Full ProbeReq frame? */
 810                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 811                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 812                                                 wps_ie);
 813 #endif /* CONFIG_WPS_UPNP */
 814         }
 815
 816         wpabuf_free(wps_ie);
 817 }
 818
 819
 820 #ifdef CONFIG_WPS_UPNP
 821
 822 static struct wpabuf *
 823 hostapd_rx_req_get_device_info(void *priv, struct upnp_wps_peer *peer)
 824 {
 825         struct hostapd_data *hapd = priv;
 826         struct wps_config cfg;
 827         struct wps_data *wps;
 828         enum wsc_op_code op_code;
 829         struct wpabuf *m1;
 830
 831         /*
 832          * Request for DeviceInfo, i.e., M1 TLVs. This is a start of WPS
 833          * registration over UPnP with the AP acting as an Enrollee. It should
 834          * be noted that this is frequently used just to get the device data,
 835          * i.e., there may not be any intent to actually complete the
 836          * registration.
 837          */
 838
 839         if (peer->wps)
 840                 wps_deinit(peer->wps);
 841
 842         os_memset(&cfg, 0, sizeof(cfg));
 843         cfg.wps = hapd->wps;
 844         cfg.pin = (u8 *) hapd->conf->ap_pin;
 845         cfg.pin_len = os_strlen(hapd->conf->ap_pin);
 846         wps = wps_init(&cfg);
 847         if (wps == NULL)
 848                 return NULL;
 849
 850         m1 = wps_get_msg(wps, &op_code);
 851         if (m1 == NULL) {
 852                 wps_deinit(wps);
 853                 return NULL;
 854         }
 855
 856         peer->wps = wps;
 857
 858         return m1;
 859 }
 860
 861
 862 static struct wpabuf *
 863 hostapd_rx_req_put_message(void *priv, struct upnp_wps_peer *peer,
 864                            const struct wpabuf *msg)
 865 {
 866         enum wps_process_res res;
 867         enum wsc_op_code op_code;
 868
 869         /* PutMessage: msg = InMessage, return OutMessage */
 870         res = wps_process_msg(peer->wps, WSC_UPnP, msg);
 871         if (res == WPS_FAILURE)
 872                 return NULL;
 873         return wps_get_msg(peer->wps, &op_code);
 874 }
 875
 876
 877 static struct wpabuf *
 878 hostapd_rx_req_get_ap_settings(void *priv, const struct wpabuf *msg)
 879 {
 880         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 881         return NULL;
 882 }
 883
 884
 885 static int hostapd_rx_req_set_ap_settings(void *priv, const struct wpabuf *msg)
 886 {
 887         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 888         return -1;
 889 }
 890
 891
 892 static int hostapd_rx_req_del_ap_settings(void *priv, const struct wpabuf *msg)
 893 {
 894         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 895         return -1;
 896 }
 897
 898
 899 static struct wpabuf *
 900 hostapd_rx_req_get_sta_settings(void *priv, const struct wpabuf *msg)
 901 {
 902         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 903         return NULL;
 904 }
 905
 906
 907 static int hostapd_rx_req_set_sta_settings(void *priv,
 908                                            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_sta_settings(void *priv,
 916                                            const struct wpabuf *msg)
 917 {
 918         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 919         return -1;
 920 }
 921
 922
 923 static int hostapd_rx_req_put_wlan_response(
 924         void *priv, enum upnp_wps_wlanevent_type ev_type,
 925         const u8 *mac_addr, const struct wpabuf *msg,
 926         enum wps_msg_type msg_type)
 927 {
 928         struct hostapd_data *hapd = priv;
 929         struct sta_info *sta;
 930         struct upnp_pending_message *p;
 931
 932         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 933                    MACSTR, ev_type, MAC2STR(mac_addr));
 934         wpa_hexdump_ascii(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 935                           wpabuf_head(msg), wpabuf_len(msg));
 936         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 937                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 938                            "PutWLANResponse WLANEventType %d", ev_type);
 939                 return -1;
 940         }
 941
 942         /*
 943          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 944          * server implementation for delivery to the peer.
 945          */
 946
 947         sta = ap_get_sta(hapd, mac_addr);
 948         if (!sta) {
 949                 /*
 950                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 951                  * Pick STA that is in an ongoing WPS registration without
 952                  * checking the MAC address.
 953                  */
 954                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 955                            "on NewWLANEventMAC; try wildcard match");
 956                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 957                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 958                                 break;
 959                 }
 960         }
 961
 962         if (!sta) {
 963                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 964                 return 0;
 965         }
 966
 967         p = os_zalloc(sizeof(*p));
 968         if (p == NULL)
 969                 return -1;
 970         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 971         p->msg = wpabuf_dup(msg);
 972         p->type = msg_type;
 973         p->next = hapd->wps->upnp_msgs;
 974         hapd->wps->upnp_msgs = p;
 975
 976         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 977 }
 978
 979
 980 static int hostapd_rx_req_set_selected_registrar(void *priv,
 981                                                  const struct wpabuf *msg)
 982 {
 983         struct hostapd_data *hapd = priv;
 984         return wps_registrar_set_selected_registrar(hapd->wps->registrar, msg);
 985 }
 986
 987
 988 static int hostapd_rx_req_reboot_ap(void *priv, const struct wpabuf *msg)
 989 {
 990         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 991         return -1;
 992 }
 993
 994
 995 static int hostapd_rx_req_reset_ap(void *priv, const struct wpabuf *msg)
 996 {
 997         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
 998         return -1;
 999 }
1000
1001
1002 static int hostapd_rx_req_reboot_sta(void *priv, const struct wpabuf *msg)
1003 {
1004         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1005         return -1;
1006 }
1007
1008
1009 static int hostapd_rx_req_reset_sta(void *priv, const struct wpabuf *msg)
1010 {
1011         wpa_printf(MSG_DEBUG, "WPS UPnP: TODO %s", __func__);
1012         return -1;
1013 }
1014
1015
1016 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1017                                  struct wps_context *wps)
1018 {
1019         struct upnp_wps_device_ctx *ctx;
1020
1021         if (!hapd->conf->upnp_iface)
1022                 return 0;
1023         ctx = os_zalloc(sizeof(*ctx));
1024         if (ctx == NULL)
1025                 return -1;
1026
1027         ctx->rx_req_get_device_info = hostapd_rx_req_get_device_info;
1028         ctx->rx_req_put_message = hostapd_rx_req_put_message;
1029         ctx->rx_req_get_ap_settings = hostapd_rx_req_get_ap_settings;
1030         ctx->rx_req_set_ap_settings = hostapd_rx_req_set_ap_settings;
1031         ctx->rx_req_del_ap_settings = hostapd_rx_req_del_ap_settings;
1032         ctx->rx_req_get_sta_settings = hostapd_rx_req_get_sta_settings;
1033         ctx->rx_req_set_sta_settings = hostapd_rx_req_set_sta_settings;
1034         ctx->rx_req_del_sta_settings = hostapd_rx_req_del_sta_settings;
1035         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1036         ctx->rx_req_set_selected_registrar =
1037                 hostapd_rx_req_set_selected_registrar;
1038         ctx->rx_req_reboot_ap = hostapd_rx_req_reboot_ap;
1039         ctx->rx_req_reset_ap = hostapd_rx_req_reset_ap;
1040         ctx->rx_req_reboot_sta = hostapd_rx_req_reboot_sta;
1041         ctx->rx_req_reset_sta = hostapd_rx_req_reset_sta;
1042
1043         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
1044         if (hapd->wps_upnp == NULL) {
1045                 os_free(ctx);
1046                 return -1;
1047         }
1048         wps->wps_upnp = hapd->wps_upnp;
1049
1050         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
1051                 upnp_wps_device_deinit(hapd->wps_upnp);
1052                 hapd->wps_upnp = NULL;
1053                 return -1;
1054         }
1055
1056         return 0;
1057 }
1058
1059
1060 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1061 {
1062         upnp_wps_device_deinit(hapd->wps_upnp);
1063 }
1064
1065 #endif /* CONFIG_WPS_UPNP */
1066
1067
1068 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1069                             char *buf, size_t buflen)
1070 {
1071         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1072 }