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 "common/wpa_ctrl.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/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         char devtype[WPS_DEV_TYPE_BUFSIZE];
 141         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 142                 return;
 143         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 144         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 145                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 146                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 147                           dev->manufacturer, dev->model_name,
 148                           dev->model_number, dev->serial_number,
 149                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 150                                                sizeof(devtype)));
 151         if (len > 0 && len < (int) sizeof(txt))
 152                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 153
 154         if (hapd->conf->wps_pin_requests) {
 155                 FILE *f;
 156                 struct os_time t;
 157                 f = fopen(hapd->conf->wps_pin_requests, "a");
 158                 if (f == NULL)
 159                         return;
 160                 os_get_time(&t);
 161                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 162                         "\t%s\n",
 163                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 164                         dev->manufacturer, dev->model_name, dev->model_number,
 165                         dev->serial_number,
 166                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 167                                              sizeof(devtype)));
 168                 fclose(f);
 169         }
 170 }
 171
 172
 173 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 174                                        const u8 *uuid_e)
 175 {
 176         struct hostapd_data *hapd = ctx;
 177         char uuid[40];
 178         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 179                 return;
 180         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 181                 MAC2STR(mac_addr), uuid);
 182 }
 183
 184
 185 static int str_starts(const char *str, const char *start)
 186 {
 187         return os_strncmp(str, start, os_strlen(start)) == 0;
 188 }
 189
 190
 191 static void wps_reload_config(void *eloop_data, void *user_ctx)
 192 {
 193         struct hostapd_iface *iface = eloop_data;
 194
 195         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 196         if (hostapd_reload_config(iface) < 0) {
 197                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 198                            "configuration");
 199         }
 200 }
 201
 202
 203 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 204 {
 205         struct hostapd_data *hapd = ctx;
 206         FILE *oconf, *nconf;
 207         size_t len, i;
 208         char *tmp_fname;
 209         char buf[1024];
 210         int multi_bss;
 211         int wpa;
 212
 213         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 214                         cred->cred_attr, cred->cred_attr_len);
 215
 216         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 217         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 218         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 219                    cred->auth_type);
 220         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 221         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 222         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 223                         cred->key, cred->key_len);
 224         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 225                    MAC2STR(cred->mac_addr));
 226
 227         if ((hapd->conf->wps_cred_processing == 1 ||
 228              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 229                 size_t blen = cred->cred_attr_len * 2 + 1;
 230                 char *_buf = os_malloc(blen);
 231                 if (_buf) {
 232                         wpa_snprintf_hex(_buf, blen,
 233                                          cred->cred_attr, cred->cred_attr_len);
 234                         wpa_msg(hapd->msg_ctx, MSG_INFO, "%s%s",
 235                                 WPS_EVENT_NEW_AP_SETTINGS, _buf);
 236                         os_free(_buf);
 237                 }
 238         } else
 239                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 240
 241         if (hapd->conf->wps_cred_processing == 1)
 242                 return 0;
 243
 244         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 245         hapd->wps->ssid_len = cred->ssid_len;
 246         hapd->wps->encr_types = cred->encr_type;
 247         hapd->wps->auth_types = cred->auth_type;
 248         if (cred->key_len == 0) {
 249                 os_free(hapd->wps->network_key);
 250                 hapd->wps->network_key = NULL;
 251                 hapd->wps->network_key_len = 0;
 252         } else {
 253                 if (hapd->wps->network_key == NULL ||
 254                     hapd->wps->network_key_len < cred->key_len) {
 255                         hapd->wps->network_key_len = 0;
 256                         os_free(hapd->wps->network_key);
 257                         hapd->wps->network_key = os_malloc(cred->key_len);
 258                         if (hapd->wps->network_key == NULL)
 259                                 return -1;
 260                 }
 261                 hapd->wps->network_key_len = cred->key_len;
 262                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 263         }
 264         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 265
 266         len = os_strlen(hapd->iface->config_fname) + 5;
 267         tmp_fname = os_malloc(len);
 268         if (tmp_fname == NULL)
 269                 return -1;
 270         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 271
 272         oconf = fopen(hapd->iface->config_fname, "r");
 273         if (oconf == NULL) {
 274                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 275                            "configuration file");
 276                 os_free(tmp_fname);
 277                 return -1;
 278         }
 279
 280         nconf = fopen(tmp_fname, "w");
 281         if (nconf == NULL) {
 282                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 283                            "configuration file");
 284                 os_free(tmp_fname);
 285                 fclose(oconf);
 286                 return -1;
 287         }
 288
 289         fprintf(nconf, "# WPS configuration - START\n");
 290
 291         fprintf(nconf, "wps_state=2\n");
 292
 293         fprintf(nconf, "ssid=");
 294         for (i = 0; i < cred->ssid_len; i++)
 295                 fputc(cred->ssid[i], nconf);
 296         fprintf(nconf, "\n");
 297
 298         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 299             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 300                 wpa = 3;
 301         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 302                 wpa = 2;
 303         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 304                 wpa = 1;
 305         else
 306                 wpa = 0;
 307
 308         if (wpa) {
 309                 char *prefix;
 310                 fprintf(nconf, "wpa=%d\n", wpa);
 311
 312                 fprintf(nconf, "wpa_key_mgmt=");
 313                 prefix = "";
 314                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 315                         fprintf(nconf, "WPA-EAP");
 316                         prefix = " ";
 317                 }
 318                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 319                         fprintf(nconf, "%sWPA-PSK", prefix);
 320                 fprintf(nconf, "\n");
 321
 322                 fprintf(nconf, "wpa_pairwise=");
 323                 prefix = "";
 324                 if (cred->encr_type & WPS_ENCR_AES) {
 325                         fprintf(nconf, "CCMP");
 326                         prefix = " ";
 327                 }
 328                 if (cred->encr_type & WPS_ENCR_TKIP) {
 329                         fprintf(nconf, "%sTKIP", prefix);
 330                 }
 331                 fprintf(nconf, "\n");
 332
 333                 if (cred->key_len >= 8 && cred->key_len < 64) {
 334                         fprintf(nconf, "wpa_passphrase=");
 335                         for (i = 0; i < cred->key_len; i++)
 336                                 fputc(cred->key[i], nconf);
 337                         fprintf(nconf, "\n");
 338                 } else if (cred->key_len == 64) {
 339                         fprintf(nconf, "wpa_psk=");
 340                         for (i = 0; i < cred->key_len; i++)
 341                                 fputc(cred->key[i], nconf);
 342                         fprintf(nconf, "\n");
 343                 } else {
 344                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 345                                    "for WPA/WPA2",
 346                                    (unsigned long) cred->key_len);
 347                 }
 348
 349                 fprintf(nconf, "auth_algs=1\n");
 350         } else {
 351                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 352                     (cred->auth_type & WPS_AUTH_SHARED))
 353                         fprintf(nconf, "auth_algs=3\n");
 354                 else if (cred->auth_type & WPS_AUTH_SHARED)
 355                         fprintf(nconf, "auth_algs=2\n");
 356                 else
 357                         fprintf(nconf, "auth_algs=1\n");
 358
 359                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 360                         int key_idx = cred->key_idx;
 361                         if (key_idx)
 362                                 key_idx--;
 363                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 364                         fprintf(nconf, "wep_key%d=", key_idx);
 365                         if (cred->key_len == 10 || cred->key_len == 26) {
 366                                 /* WEP key as a hex string */
 367                                 for (i = 0; i < cred->key_len; i++)
 368                                         fputc(cred->key[i], nconf);
 369                         } else {
 370                                 /* Raw WEP key; convert to hex */
 371                                 for (i = 0; i < cred->key_len; i++)
 372                                         fprintf(nconf, "%02x", cred->key[i]);
 373                         }
 374                         fprintf(nconf, "\n");
 375                 }
 376         }
 377
 378         fprintf(nconf, "# WPS configuration - END\n");
 379
 380         multi_bss = 0;
 381         while (fgets(buf, sizeof(buf), oconf)) {
 382                 if (os_strncmp(buf, "bss=", 4) == 0)
 383                         multi_bss = 1;
 384                 if (!multi_bss &&
 385                     (str_starts(buf, "ssid=") ||
 386                      str_starts(buf, "auth_algs=") ||
 387                      str_starts(buf, "wps_state=") ||
 388                      str_starts(buf, "wpa=") ||
 389                      str_starts(buf, "wpa_psk=") ||
 390                      str_starts(buf, "wpa_pairwise=") ||
 391                      str_starts(buf, "rsn_pairwise=") ||
 392                      str_starts(buf, "wpa_key_mgmt=") ||
 393                      str_starts(buf, "wpa_passphrase="))) {
 394                         fprintf(nconf, "#WPS# %s", buf);
 395                 } else
 396                         fprintf(nconf, "%s", buf);
 397         }
 398
 399         fclose(nconf);
 400         fclose(oconf);
 401
 402         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 403                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 404                            "configuration file: %s", strerror(errno));
 405                 os_free(tmp_fname);
 406                 return -1;
 407         }
 408
 409         os_free(tmp_fname);
 410
 411         /* Schedule configuration reload after short period of time to allow
 412          * EAP-WSC to be finished.
 413          */
 414         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 415                                NULL);
 416
 417         /* TODO: dualband AP may need to update multiple configuration files */
 418
 419         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 420
 421         return 0;
 422 }
 423
 424
 425 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 426                                   struct wps_event_pwd_auth_fail *data)
 427 {
 428         FILE *f;
 429
 430         if (!data->enrollee)
 431                 return;
 432
 433         /*
 434          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 435          * if this happens multiple times.
 436          */
 437         hapd->ap_pin_failures++;
 438         if (hapd->ap_pin_failures < 4)
 439                 return;
 440
 441         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 442         hapd->wps->ap_setup_locked = 1;
 443
 444         wps_registrar_update_ie(hapd->wps->registrar);
 445
 446         if (hapd->conf->wps_cred_processing == 1)
 447                 return;
 448
 449         f = fopen(hapd->iface->config_fname, "a");
 450         if (f == NULL) {
 451                 wpa_printf(MSG_WARNING, "WPS: Could not append to the current "
 452                            "configuration file");
 453                 return;
 454         }
 455
 456         fprintf(f, "# WPS AP Setup Locked based on possible attack\n");
 457         fprintf(f, "ap_setup_locked=1\n");
 458         fclose(f);
 459
 460         /* TODO: dualband AP may need to update multiple configuration files */
 461
 462         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 463 }
 464
 465
 466 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 467                                  union wps_event_data *data)
 468 {
 469         struct hostapd_data *hapd = ctx;
 470
 471         if (event == WPS_EV_PWD_AUTH_FAIL)
 472                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 473 }
 474
 475
 476 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 477 {
 478         os_free(hapd->wps_beacon_ie);
 479         hapd->wps_beacon_ie = NULL;
 480         hapd->wps_beacon_ie_len = 0;
 481         hostapd_set_wps_beacon_ie(hapd, NULL, 0);
 482
 483         os_free(hapd->wps_probe_resp_ie);
 484         hapd->wps_probe_resp_ie = NULL;
 485         hapd->wps_probe_resp_ie_len = 0;
 486         hostapd_set_wps_probe_resp_ie(hapd, NULL, 0);
 487 }
 488
 489
 490 int hostapd_init_wps(struct hostapd_data *hapd,
 491                      struct hostapd_bss_config *conf)
 492 {
 493         struct wps_context *wps;
 494         struct wps_registrar_config cfg;
 495
 496         if (conf->wps_state == 0) {
 497                 hostapd_wps_clear_ies(hapd);
 498                 return 0;
 499         }
 500
 501         wps = os_zalloc(sizeof(*wps));
 502         if (wps == NULL)
 503                 return -1;
 504
 505         wps->cred_cb = hostapd_wps_cred_cb;
 506         wps->event_cb = hostapd_wps_event_cb;
 507         wps->cb_ctx = hapd;
 508
 509         os_memset(&cfg, 0, sizeof(cfg));
 510         wps->wps_state = hapd->conf->wps_state;
 511         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 512         if (is_nil_uuid(hapd->conf->uuid)) {
 513                 uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 514                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
 515                             wps->uuid, UUID_LEN);
 516         } else
 517                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 518         wps->ssid_len = hapd->conf->ssid.ssid_len;
 519         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 520         wps->ap = 1;
 521         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 522         wps->dev.device_name = hapd->conf->device_name ?
 523                 os_strdup(hapd->conf->device_name) : NULL;
 524         wps->dev.manufacturer = hapd->conf->manufacturer ?
 525                 os_strdup(hapd->conf->manufacturer) : NULL;
 526         wps->dev.model_name = hapd->conf->model_name ?
 527                 os_strdup(hapd->conf->model_name) : NULL;
 528         wps->dev.model_number = hapd->conf->model_number ?
 529                 os_strdup(hapd->conf->model_number) : NULL;
 530         wps->dev.serial_number = hapd->conf->serial_number ?
 531                 os_strdup(hapd->conf->serial_number) : NULL;
 532         if (hapd->conf->config_methods) {
 533                 char *m = hapd->conf->config_methods;
 534                 if (os_strstr(m, "label"))
 535                         wps->config_methods |= WPS_CONFIG_LABEL;
 536                 if (os_strstr(m, "display"))
 537                         wps->config_methods |= WPS_CONFIG_DISPLAY;
 538                 if (os_strstr(m, "push_button"))
 539                         wps->config_methods |= WPS_CONFIG_PUSHBUTTON;
 540                 if (os_strstr(m, "keypad"))
 541                         wps->config_methods |= WPS_CONFIG_KEYPAD;
 542         }
 543         if (hapd->conf->device_type &&
 544             wps_dev_type_str2bin(hapd->conf->device_type,
 545                                  wps->dev.pri_dev_type) < 0) {
 546                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
 547                 os_free(wps);
 548                 return -1;
 549         }
 550         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 551         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 552                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 553
 554         if (conf->wpa & WPA_PROTO_RSN) {
 555                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 556                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 557                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 558                         wps->auth_types |= WPS_AUTH_WPA2;
 559
 560                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 561                         wps->encr_types |= WPS_ENCR_AES;
 562                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 563                         wps->encr_types |= WPS_ENCR_TKIP;
 564         }
 565
 566         if (conf->wpa & WPA_PROTO_WPA) {
 567                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 568                         wps->auth_types |= WPS_AUTH_WPAPSK;
 569                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 570                         wps->auth_types |= WPS_AUTH_WPA;
 571
 572                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 573                         wps->encr_types |= WPS_ENCR_AES;
 574                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 575                         wps->encr_types |= WPS_ENCR_TKIP;
 576         }
 577
 578         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 579                 wps->encr_types |= WPS_ENCR_NONE;
 580                 wps->auth_types |= WPS_AUTH_OPEN;
 581         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 582                 wps->encr_types |= WPS_ENCR_WEP;
 583                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 584                         wps->auth_types |= WPS_AUTH_OPEN;
 585                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 586                         wps->auth_types |= WPS_AUTH_SHARED;
 587         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 588                 wps->auth_types |= WPS_AUTH_OPEN;
 589                 if (conf->default_wep_key_len)
 590                         wps->encr_types |= WPS_ENCR_WEP;
 591                 else
 592                         wps->encr_types |= WPS_ENCR_NONE;
 593         }
 594
 595         if (conf->ssid.wpa_psk_file) {
 596                 /* Use per-device PSKs */
 597         } else if (conf->ssid.wpa_passphrase) {
 598                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 599                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 600         } else if (conf->ssid.wpa_psk) {
 601                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 602                 if (wps->network_key == NULL) {
 603                         os_free(wps);
 604                         return -1;
 605                 }
 606                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 607                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 608                 wps->network_key_len = 2 * PMK_LEN;
 609         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 610                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 611                 if (wps->network_key == NULL) {
 612                         os_free(wps);
 613                         return -1;
 614                 }
 615                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 616                           conf->ssid.wep.len[0]);
 617                 wps->network_key_len = conf->ssid.wep.len[0];
 618         }
 619
 620         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 621                 /* Override parameters to enable security by default */
 622                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 623                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 624         }
 625
 626         wps->ap_settings = conf->ap_settings;
 627         wps->ap_settings_len = conf->ap_settings_len;
 628
 629         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 630         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 631         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 632         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 633         cfg.cb_ctx = hapd;
 634         cfg.skip_cred_build = conf->skip_cred_build;
 635         cfg.extra_cred = conf->extra_cred;
 636         cfg.extra_cred_len = conf->extra_cred_len;
 637         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 638                 conf->skip_cred_build;
 639         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 640                 cfg.static_wep_only = 1;
 641
 642         wps->registrar = wps_registrar_init(wps, &cfg);
 643         if (wps->registrar == NULL) {
 644                 printf("Failed to initialize WPS Registrar\n");
 645                 os_free(wps->network_key);
 646                 os_free(wps);
 647                 return -1;
 648         }
 649
 650 #ifdef CONFIG_WPS_UPNP
 651         wps->friendly_name = hapd->conf->friendly_name;
 652         wps->manufacturer_url = hapd->conf->manufacturer_url;
 653         wps->model_description = hapd->conf->model_description;
 654         wps->model_url = hapd->conf->model_url;
 655         wps->upc = hapd->conf->upc;
 656
 657         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 658                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 659                 wps_registrar_deinit(wps->registrar);
 660                 os_free(wps->network_key);
 661                 os_free(wps);
 662                 return -1;
 663         }
 664 #endif /* CONFIG_WPS_UPNP */
 665
 666         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 667
 668         hapd->wps = wps;
 669
 670         return 0;
 671 }
 672
 673
 674 void hostapd_deinit_wps(struct hostapd_data *hapd)
 675 {
 676         if (hapd->wps == NULL)
 677                 return;
 678 #ifdef CONFIG_WPS_UPNP
 679         hostapd_wps_upnp_deinit(hapd);
 680 #endif /* CONFIG_WPS_UPNP */
 681         wps_registrar_deinit(hapd->wps->registrar);
 682         os_free(hapd->wps->network_key);
 683         wps_device_data_free(&hapd->wps->dev);
 684         wpabuf_free(hapd->wps->dh_pubkey);
 685         wpabuf_free(hapd->wps->dh_privkey);
 686         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 687         wpabuf_free(hapd->wps->oob_conf.dev_password);
 688         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 689         os_free(hapd->wps);
 690         hapd->wps = NULL;
 691         hostapd_wps_clear_ies(hapd);
 692 }
 693
 694
 695 int hostapd_wps_add_pin(struct hostapd_data *hapd, const char *uuid,
 696                         const char *pin, int timeout)
 697 {
 698         u8 u[UUID_LEN];
 699         int any = 0;
 700
 701         if (hapd->wps == NULL)
 702                 return -1;
 703         if (os_strcmp(uuid, "any") == 0)
 704                 any = 1;
 705         else if (uuid_str2bin(uuid, u))
 706                 return -1;
 707         return wps_registrar_add_pin(hapd->wps->registrar, any ? NULL : u,
 708                                      (const u8 *) pin, os_strlen(pin),
 709                                      timeout);
 710 }
 711
 712
 713 int hostapd_wps_button_pushed(struct hostapd_data *hapd)
 714 {
 715         if (hapd->wps == NULL)
 716                 return -1;
 717         return wps_registrar_button_pushed(hapd->wps->registrar);
 718 }
 719
 720
 721 #ifdef CONFIG_WPS_OOB
 722 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
 723                           char *path, char *method, char *name)
 724 {
 725         struct wps_context *wps = hapd->wps;
 726         struct oob_device_data *oob_dev;
 727
 728         oob_dev = wps_get_oob_device(device_type);
 729         if (oob_dev == NULL)
 730                 return -1;
 731         oob_dev->device_path = path;
 732         oob_dev->device_name = name;
 733         wps->oob_conf.oob_method = wps_get_oob_method(method);
 734
 735         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
 736                 /*
 737                  * Use pre-configured DH keys in order to be able to write the
 738                  * key hash into the OOB file.
 739                  */
 740                 wpabuf_free(wps->dh_pubkey);
 741                 wpabuf_free(wps->dh_privkey);
 742                 wps->dh_privkey = NULL;
 743                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
 744                                          &wps->dh_privkey);
 745                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
 746                 if (wps->dh_pubkey == NULL) {
 747                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
 748                                    "Diffie-Hellman handshake");
 749                         return -1;
 750                 }
 751         }
 752
 753         if (wps_process_oob(wps, oob_dev, 1) < 0)
 754                 goto error;
 755
 756         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
 757              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
 758             hostapd_wps_add_pin(hapd, "any",
 759                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
 760             0)
 761                 goto error;
 762
 763         return 0;
 764
 765 error:
 766         wpabuf_free(wps->dh_pubkey);
 767         wps->dh_pubkey = NULL;
 768         wpabuf_free(wps->dh_privkey);
 769         wps->dh_privkey = NULL;
 770         return -1;
 771 }
 772 #endif /* CONFIG_WPS_OOB */
 773
 774
 775 static void hostapd_wps_probe_req_rx(void *ctx, const u8 *addr,
 776                                      const u8 *ie, size_t ie_len)
 777 {
 778         struct hostapd_data *hapd = ctx;
 779         struct wpabuf *wps_ie;
 780
 781         if (hapd->wps == NULL)
 782                 return;
 783
 784         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
 785         if (wps_ie == NULL)
 786                 return;
 787
 788         if (wpabuf_len(wps_ie) > 0) {
 789                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie);
 790 #ifdef CONFIG_WPS_UPNP
 791                 /* FIX: what exactly should be included in the WLANEvent?
 792                  * WPS attributes? Full ProbeReq frame? */
 793                 upnp_wps_device_send_wlan_event(hapd->wps_upnp, addr,
 794                                                 UPNP_WPS_WLANEVENT_TYPE_PROBE,
 795                                                 wps_ie);
 796 #endif /* CONFIG_WPS_UPNP */
 797         }
 798
 799         wpabuf_free(wps_ie);
 800 }
 801
 802
 803 #ifdef CONFIG_WPS_UPNP
 804
 805 static struct wpabuf *
 806 hostapd_rx_req_get_device_info(void *priv, struct upnp_wps_peer *peer)
 807 {
 808         struct hostapd_data *hapd = priv;
 809         struct wps_config cfg;
 810         struct wps_data *wps;
 811         enum wsc_op_code op_code;
 812         struct wpabuf *m1;
 813
 814         /*
 815          * Request for DeviceInfo, i.e., M1 TLVs. This is a start of WPS
 816          * registration over UPnP with the AP acting as an Enrollee. It should
 817          * be noted that this is frequently used just to get the device data,
 818          * i.e., there may not be any intent to actually complete the
 819          * registration.
 820          */
 821
 822         if (peer->wps)
 823                 wps_deinit(peer->wps);
 824
 825         os_memset(&cfg, 0, sizeof(cfg));
 826         cfg.wps = hapd->wps;
 827         cfg.pin = (u8 *) hapd->conf->ap_pin;
 828         cfg.pin_len = os_strlen(hapd->conf->ap_pin);
 829         wps = wps_init(&cfg);
 830         if (wps == NULL)
 831                 return NULL;
 832
 833         m1 = wps_get_msg(wps, &op_code);
 834         if (m1 == NULL) {
 835                 wps_deinit(wps);
 836                 return NULL;
 837         }
 838
 839         peer->wps = wps;
 840
 841         return m1;
 842 }
 843
 844
 845 static struct wpabuf *
 846 hostapd_rx_req_put_message(void *priv, struct upnp_wps_peer *peer,
 847                            const struct wpabuf *msg)
 848 {
 849         enum wps_process_res res;
 850         enum wsc_op_code op_code;
 851
 852         /* PutMessage: msg = InMessage, return OutMessage */
 853         res = wps_process_msg(peer->wps, WSC_UPnP, msg);
 854         if (res == WPS_FAILURE)
 855                 return NULL;
 856         return wps_get_msg(peer->wps, &op_code);
 857 }
 858
 859
 860 static int hostapd_rx_req_put_wlan_response(
 861         void *priv, enum upnp_wps_wlanevent_type ev_type,
 862         const u8 *mac_addr, const struct wpabuf *msg,
 863         enum wps_msg_type msg_type)
 864 {
 865         struct hostapd_data *hapd = priv;
 866         struct sta_info *sta;
 867         struct upnp_pending_message *p;
 868
 869         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
 870                    MACSTR, ev_type, MAC2STR(mac_addr));
 871         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
 872                     wpabuf_head(msg), wpabuf_len(msg));
 873         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
 874                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
 875                            "PutWLANResponse WLANEventType %d", ev_type);
 876                 return -1;
 877         }
 878
 879         /*
 880          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
 881          * server implementation for delivery to the peer.
 882          */
 883
 884         sta = ap_get_sta(hapd, mac_addr);
 885         if (!sta) {
 886                 /*
 887                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
 888                  * Pick STA that is in an ongoing WPS registration without
 889                  * checking the MAC address.
 890                  */
 891                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
 892                            "on NewWLANEventMAC; try wildcard match");
 893                 for (sta = hapd->sta_list; sta; sta = sta->next) {
 894                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
 895                                 break;
 896                 }
 897         }
 898
 899         if (!sta) {
 900                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
 901                 return 0;
 902         }
 903
 904         p = os_zalloc(sizeof(*p));
 905         if (p == NULL)
 906                 return -1;
 907         os_memcpy(p->addr, sta->addr, ETH_ALEN);
 908         p->msg = wpabuf_dup(msg);
 909         p->type = msg_type;
 910         p->next = hapd->wps->upnp_msgs;
 911         hapd->wps->upnp_msgs = p;
 912
 913         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
 914 }
 915
 916
 917 static int hostapd_rx_req_set_selected_registrar(void *priv,
 918                                                  const struct wpabuf *msg)
 919 {
 920         struct hostapd_data *hapd = priv;
 921         return wps_registrar_set_selected_registrar(hapd->wps->registrar, msg);
 922 }
 923
 924
 925 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
 926                                  struct wps_context *wps)
 927 {
 928         struct upnp_wps_device_ctx *ctx;
 929
 930         if (!hapd->conf->upnp_iface)
 931                 return 0;
 932         ctx = os_zalloc(sizeof(*ctx));
 933         if (ctx == NULL)
 934                 return -1;
 935
 936         ctx->rx_req_get_device_info = hostapd_rx_req_get_device_info;
 937         ctx->rx_req_put_message = hostapd_rx_req_put_message;
 938         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
 939         ctx->rx_req_set_selected_registrar =
 940                 hostapd_rx_req_set_selected_registrar;
 941
 942         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd);
 943         if (hapd->wps_upnp == NULL) {
 944                 os_free(ctx);
 945                 return -1;
 946         }
 947         wps->wps_upnp = hapd->wps_upnp;
 948
 949         if (upnp_wps_device_start(hapd->wps_upnp, hapd->conf->upnp_iface)) {
 950                 upnp_wps_device_deinit(hapd->wps_upnp);
 951                 hapd->wps_upnp = NULL;
 952                 return -1;
 953         }
 954
 955         return 0;
 956 }
 957
 958
 959 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
 960 {
 961         upnp_wps_device_deinit(hapd->wps_upnp);
 962 }
 963
 964 #endif /* CONFIG_WPS_UPNP */
 965
 966
 967 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
 968                             char *buf, size_t buflen)
 969 {
 970         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
 971 }