src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License version 2 as
   7  * published by the Free Software Foundation.
   8  *
   9  * Alternatively, this software may be distributed under the terms of BSD
  10  * license.
  11  *
  12  * See README and COPYING for more details.
  13  */
  14
  15 #include "utils/includes.h"
  16
  17 #include "utils/common.h"
  18 #include "utils/eloop.h"
  19 #include "utils/uuid.h"
  20 #include "crypto/dh_groups.h"
  21 #include "common/wpa_ctrl.h"
  22 #include "common/ieee802_11_defs.h"
  23 #include "common/ieee802_11_common.h"
  24 #include "eapol_auth/eapol_auth_sm.h"
  25 #include "eapol_auth/eapol_auth_sm_i.h"
  26 #include "wps/wps.h"
  27 #include "wps/wps_defs.h"
  28 #include "wps/wps_dev_attr.h"
  29 #include "hostapd.h"
  30 #include "ap_config.h"
  31 #include "ap_drv_ops.h"
  32 #include "beacon.h"
  33 #include "sta_info.h"
  34 #include "wps_hostapd.h"
  35
  36
  37 #ifdef CONFIG_WPS_UPNP
  38 #include "wps/wps_upnp.h"
  39 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  40                                  struct wps_context *wps);
  41 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  42 #endif /* CONFIG_WPS_UPNP */
  43
  44 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  45                                     const u8 *bssid,
  46                                     const u8 *ie, size_t ie_len);
  47 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  48
  49
  50 struct wps_for_each_data {
  51         int (*func)(struct hostapd_data *h, void *ctx);
  52         void *ctx;
  53 };
  54
  55
  56 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  57 {
  58         struct wps_for_each_data *data = ctx;
  59         size_t j;
  60
  61         if (iface == NULL)
  62                 return 0;
  63         for (j = 0; j < iface->num_bss; j++) {
  64                 struct hostapd_data *hapd = iface->bss[j];
  65                 int ret = data->func(hapd, data->ctx);
  66                 if (ret)
  67                         return ret;
  68         }
  69
  70         return 0;
  71 }
  72
  73
  74 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  75                                 int (*func)(struct hostapd_data *h, void *ctx),
  76                                 void *ctx)
  77 {
  78         struct hostapd_iface *iface = hapd->iface;
  79         struct wps_for_each_data data;
  80         data.func = func;
  81         data.ctx = ctx;
  82         if (iface->for_each_interface == NULL)
  83                 return wps_for_each(iface, &data);
  84         return iface->for_each_interface(iface->interfaces, wps_for_each,
  85                                          &data);
  86 }
  87
  88
  89 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  90                                   size_t psk_len)
  91 {
  92         struct hostapd_data *hapd = ctx;
  93         struct hostapd_wpa_psk *p;
  94         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  95
  96         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  97                    MACSTR, MAC2STR(mac_addr));
  98         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  99
 100         if (psk_len != PMK_LEN) {
 101                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
 102                            (unsigned long) psk_len);
 103                 return -1;
 104         }
 105
 106         /* Add the new PSK to runtime PSK list */
 107         p = os_zalloc(sizeof(*p));
 108         if (p == NULL)
 109                 return -1;
 110         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 111         os_memcpy(p->psk, psk, PMK_LEN);
 112
 113         p->next = ssid->wpa_psk;
 114         ssid->wpa_psk = p;
 115
 116         if (ssid->wpa_psk_file) {
 117                 FILE *f;
 118                 char hex[PMK_LEN * 2 + 1];
 119                 /* Add the new PSK to PSK list file */
 120                 f = fopen(ssid->wpa_psk_file, "a");
 121                 if (f == NULL) {
 122                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 123                                    "'%s'", ssid->wpa_psk_file);
 124                         return -1;
 125                 }
 126
 127                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 128                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 129                 fclose(f);
 130         }
 131
 132         return 0;
 133 }
 134
 135
 136 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 137                                  struct wpabuf *probe_resp_ie)
 138 {
 139         struct hostapd_data *hapd = ctx;
 140         wpabuf_free(hapd->wps_beacon_ie);
 141         hapd->wps_beacon_ie = beacon_ie;
 142         wpabuf_free(hapd->wps_probe_resp_ie);
 143         hapd->wps_probe_resp_ie = probe_resp_ie;
 144         if (hapd->beacon_set_done)
 145                 ieee802_11_set_beacon(hapd);
 146         return hostapd_set_ap_wps_ie(hapd);
 147 }
 148
 149
 150 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 151                                       const struct wps_device_data *dev)
 152 {
 153         struct hostapd_data *hapd = ctx;
 154         char uuid[40], txt[400];
 155         int len;
 156         char devtype[WPS_DEV_TYPE_BUFSIZE];
 157         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 158                 return;
 159         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 160         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 161                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 162                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 163                           dev->manufacturer, dev->model_name,
 164                           dev->model_number, dev->serial_number,
 165                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 166                                                sizeof(devtype)));
 167         if (len > 0 && len < (int) sizeof(txt))
 168                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 169
 170         if (hapd->conf->wps_pin_requests) {
 171                 FILE *f;
 172                 struct os_time t;
 173                 f = fopen(hapd->conf->wps_pin_requests, "a");
 174                 if (f == NULL)
 175                         return;
 176                 os_get_time(&t);
 177                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 178                         "\t%s\n",
 179                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 180                         dev->manufacturer, dev->model_name, dev->model_number,
 181                         dev->serial_number,
 182                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 183                                              sizeof(devtype)));
 184                 fclose(f);
 185         }
 186 }
 187
 188
 189 struct wps_stop_reg_data {
 190         struct hostapd_data *current_hapd;
 191         const u8 *uuid_e;
 192 };
 193
 194 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
 195 {
 196         struct wps_stop_reg_data *data = ctx;
 197         if (hapd != data->current_hapd && hapd->wps != NULL)
 198                 wps_registrar_complete(hapd->wps->registrar, data->uuid_e);
 199         return 0;
 200 }
 201
 202
 203 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 204                                        const u8 *uuid_e)
 205 {
 206         struct hostapd_data *hapd = ctx;
 207         char uuid[40];
 208         struct wps_stop_reg_data data;
 209         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 210                 return;
 211         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 212                 MAC2STR(mac_addr), uuid);
 213         if (hapd->wps_reg_success_cb)
 214                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 215                                          mac_addr, uuid_e);
 216         data.current_hapd = hapd;
 217         data.uuid_e = uuid_e;
 218         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 219 }
 220
 221
 222 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 223                                          const u8 *uuid_e,
 224                                          const u8 *pri_dev_type,
 225                                          u16 config_methods,
 226                                          u16 dev_password_id, u8 request_type,
 227                                          const char *dev_name)
 228 {
 229         struct hostapd_data *hapd = ctx;
 230         char uuid[40];
 231         char devtype[WPS_DEV_TYPE_BUFSIZE];
 232         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 233                 return;
 234         if (dev_name == NULL)
 235                 dev_name = "";
 236         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 237                      " %s %s 0x%x %u %u [%s]",
 238                      MAC2STR(addr), uuid,
 239                      wps_dev_type_bin2str(pri_dev_type, devtype,
 240                                           sizeof(devtype)),
 241                      config_methods, dev_password_id, request_type, dev_name);
 242 }
 243
 244
 245 static int str_starts(const char *str, const char *start)
 246 {
 247         return os_strncmp(str, start, os_strlen(start)) == 0;
 248 }
 249
 250
 251 static void wps_reload_config(void *eloop_data, void *user_ctx)
 252 {
 253         struct hostapd_iface *iface = eloop_data;
 254
 255         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 256         if (iface->reload_config(iface) < 0) {
 257                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 258                            "configuration");
 259         }
 260 }
 261
 262
 263 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 264                               size_t attr_len)
 265 {
 266         size_t blen = attr_len * 2 + 1;
 267         char *buf = os_malloc(blen);
 268         if (buf) {
 269                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 270                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 271                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 272                 os_free(buf);
 273         }
 274 }
 275
 276
 277 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 278 {
 279         const struct wps_credential *cred = ctx;
 280         FILE *oconf, *nconf;
 281         size_t len, i;
 282         char *tmp_fname;
 283         char buf[1024];
 284         int multi_bss;
 285         int wpa;
 286
 287         if (hapd->wps == NULL)
 288                 return 0;
 289
 290         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 291                         cred->cred_attr, cred->cred_attr_len);
 292
 293         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 294         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 295         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 296                    cred->auth_type);
 297         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 298         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 299         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 300                         cred->key, cred->key_len);
 301         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 302                    MAC2STR(cred->mac_addr));
 303
 304         if ((hapd->conf->wps_cred_processing == 1 ||
 305              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 306                 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
 307         } else if (hapd->conf->wps_cred_processing == 1 ||
 308                    hapd->conf->wps_cred_processing == 2) {
 309                 struct wpabuf *attr;
 310                 attr = wpabuf_alloc(200);
 311                 if (attr && wps_build_credential_wrap(attr, cred) == 0)
 312                         hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
 313                                           wpabuf_len(attr));
 314                 wpabuf_free(attr);
 315         } else
 316                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 317
 318         if (hapd->conf->wps_cred_processing == 1)
 319                 return 0;
 320
 321         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 322         hapd->wps->ssid_len = cred->ssid_len;
 323         hapd->wps->encr_types = cred->encr_type;
 324         hapd->wps->auth_types = cred->auth_type;
 325         if (cred->key_len == 0) {
 326                 os_free(hapd->wps->network_key);
 327                 hapd->wps->network_key = NULL;
 328                 hapd->wps->network_key_len = 0;
 329         } else {
 330                 if (hapd->wps->network_key == NULL ||
 331                     hapd->wps->network_key_len < cred->key_len) {
 332                         hapd->wps->network_key_len = 0;
 333                         os_free(hapd->wps->network_key);
 334                         hapd->wps->network_key = os_malloc(cred->key_len);
 335                         if (hapd->wps->network_key == NULL)
 336                                 return -1;
 337                 }
 338                 hapd->wps->network_key_len = cred->key_len;
 339                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 340         }
 341         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 342
 343         len = os_strlen(hapd->iface->config_fname) + 5;
 344         tmp_fname = os_malloc(len);
 345         if (tmp_fname == NULL)
 346                 return -1;
 347         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 348
 349         oconf = fopen(hapd->iface->config_fname, "r");
 350         if (oconf == NULL) {
 351                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 352                            "configuration file");
 353                 os_free(tmp_fname);
 354                 return -1;
 355         }
 356
 357         nconf = fopen(tmp_fname, "w");
 358         if (nconf == NULL) {
 359                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 360                            "configuration file");
 361                 os_free(tmp_fname);
 362                 fclose(oconf);
 363                 return -1;
 364         }
 365
 366         fprintf(nconf, "# WPS configuration - START\n");
 367
 368         fprintf(nconf, "wps_state=2\n");
 369
 370         fprintf(nconf, "ssid=");
 371         for (i = 0; i < cred->ssid_len; i++)
 372                 fputc(cred->ssid[i], nconf);
 373         fprintf(nconf, "\n");
 374
 375         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 376             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 377                 wpa = 3;
 378         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 379                 wpa = 2;
 380         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 381                 wpa = 1;
 382         else
 383                 wpa = 0;
 384
 385         if (wpa) {
 386                 char *prefix;
 387                 fprintf(nconf, "wpa=%d\n", wpa);
 388
 389                 fprintf(nconf, "wpa_key_mgmt=");
 390                 prefix = "";
 391                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 392                         fprintf(nconf, "WPA-EAP");
 393                         prefix = " ";
 394                 }
 395                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 396                         fprintf(nconf, "%sWPA-PSK", prefix);
 397                 fprintf(nconf, "\n");
 398
 399                 fprintf(nconf, "wpa_pairwise=");
 400                 prefix = "";
 401                 if (cred->encr_type & WPS_ENCR_AES) {
 402                         fprintf(nconf, "CCMP");
 403                         prefix = " ";
 404                 }
 405                 if (cred->encr_type & WPS_ENCR_TKIP) {
 406                         fprintf(nconf, "%sTKIP", prefix);
 407                 }
 408                 fprintf(nconf, "\n");
 409
 410                 if (cred->key_len >= 8 && cred->key_len < 64) {
 411                         fprintf(nconf, "wpa_passphrase=");
 412                         for (i = 0; i < cred->key_len; i++)
 413                                 fputc(cred->key[i], nconf);
 414                         fprintf(nconf, "\n");
 415                 } else if (cred->key_len == 64) {
 416                         fprintf(nconf, "wpa_psk=");
 417                         for (i = 0; i < cred->key_len; i++)
 418                                 fputc(cred->key[i], nconf);
 419                         fprintf(nconf, "\n");
 420                 } else {
 421                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 422                                    "for WPA/WPA2",
 423                                    (unsigned long) cred->key_len);
 424                 }
 425
 426                 fprintf(nconf, "auth_algs=1\n");
 427         } else {
 428                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 429                     (cred->auth_type & WPS_AUTH_SHARED))
 430                         fprintf(nconf, "auth_algs=3\n");
 431                 else if (cred->auth_type & WPS_AUTH_SHARED)
 432                         fprintf(nconf, "auth_algs=2\n");
 433                 else
 434                         fprintf(nconf, "auth_algs=1\n");
 435
 436                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 437                         int key_idx = cred->key_idx;
 438                         if (key_idx)
 439                                 key_idx--;
 440                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 441                         fprintf(nconf, "wep_key%d=", key_idx);
 442                         if (cred->key_len == 10 || cred->key_len == 26) {
 443                                 /* WEP key as a hex string */
 444                                 for (i = 0; i < cred->key_len; i++)
 445                                         fputc(cred->key[i], nconf);
 446                         } else {
 447                                 /* Raw WEP key; convert to hex */
 448                                 for (i = 0; i < cred->key_len; i++)
 449                                         fprintf(nconf, "%02x", cred->key[i]);
 450                         }
 451                         fprintf(nconf, "\n");
 452                 }
 453         }
 454
 455         fprintf(nconf, "# WPS configuration - END\n");
 456
 457         multi_bss = 0;
 458         while (fgets(buf, sizeof(buf), oconf)) {
 459                 if (os_strncmp(buf, "bss=", 4) == 0)
 460                         multi_bss = 1;
 461                 if (!multi_bss &&
 462                     (str_starts(buf, "ssid=") ||
 463                      str_starts(buf, "auth_algs=") ||
 464                      str_starts(buf, "wep_default_key=") ||
 465                      str_starts(buf, "wep_key") ||
 466                      str_starts(buf, "wps_state=") ||
 467                      str_starts(buf, "wpa=") ||
 468                      str_starts(buf, "wpa_psk=") ||
 469                      str_starts(buf, "wpa_pairwise=") ||
 470                      str_starts(buf, "rsn_pairwise=") ||
 471                      str_starts(buf, "wpa_key_mgmt=") ||
 472                      str_starts(buf, "wpa_passphrase="))) {
 473                         fprintf(nconf, "#WPS# %s", buf);
 474                 } else
 475                         fprintf(nconf, "%s", buf);
 476         }
 477
 478         fclose(nconf);
 479         fclose(oconf);
 480
 481         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 482                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 483                            "configuration file: %s", strerror(errno));
 484                 os_free(tmp_fname);
 485                 return -1;
 486         }
 487
 488         os_free(tmp_fname);
 489
 490         /* Schedule configuration reload after short period of time to allow
 491          * EAP-WSC to be finished.
 492          */
 493         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 494                                NULL);
 495
 496         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 497
 498         return 0;
 499 }
 500
 501
 502 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 503 {
 504         struct hostapd_data *hapd = ctx;
 505         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 506 }
 507
 508
 509 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 510 {
 511         struct hostapd_data *hapd = eloop_data;
 512
 513         if (hapd->conf->ap_setup_locked)
 514                 return;
 515
 516         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 517         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 518         hapd->wps->ap_setup_locked = 0;
 519         wps_registrar_update_ie(hapd->wps->registrar);
 520 }
 521
 522
 523 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 524 {
 525         struct wps_event_pwd_auth_fail *data = ctx;
 526
 527         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 528                 return 0;
 529
 530         /*
 531          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 532          * for some time if this happens multiple times to slow down brute
 533          * force attacks.
 534          */
 535         hapd->ap_pin_failures++;
 536         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u",
 537                    hapd->ap_pin_failures);
 538         if (hapd->ap_pin_failures < 3)
 539                 return 0;
 540
 541         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 542         hapd->wps->ap_setup_locked = 1;
 543
 544         wps_registrar_update_ie(hapd->wps->registrar);
 545
 546         if (!hapd->conf->ap_setup_locked) {
 547                 if (hapd->ap_pin_lockout_time == 0)
 548                         hapd->ap_pin_lockout_time = 60;
 549                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 550                          (hapd->ap_pin_failures % 3) == 0)
 551                         hapd->ap_pin_lockout_time *= 2;
 552
 553                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 554                            hapd->ap_pin_lockout_time);
 555                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 556                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 557                                        hostapd_wps_reenable_ap_pin, hapd,
 558                                        NULL);
 559         }
 560
 561         return 0;
 562 }
 563
 564
 565 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 566                                   struct wps_event_pwd_auth_fail *data)
 567 {
 568         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 569 }
 570
 571
 572 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 573         "No Error", /* WPS_EI_NO_ERROR */
 574         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 575         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 576 };
 577
 578 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 579                                    struct wps_event_fail *fail)
 580 {
 581         if (fail->error_indication > 0 &&
 582             fail->error_indication < NUM_WPS_EI_VALUES) {
 583                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 584                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 585                         fail->msg, fail->config_error, fail->error_indication,
 586                         wps_event_fail_reason[fail->error_indication]);
 587         } else {
 588                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 589                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 590                         fail->msg, fail->config_error);
 591         }
 592 }
 593
 594
 595 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 596                                  union wps_event_data *data)
 597 {
 598         struct hostapd_data *hapd = ctx;
 599
 600         switch (event) {
 601         case WPS_EV_M2D:
 602                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 603                 break;
 604         case WPS_EV_FAIL:
 605                 hostapd_wps_event_fail(hapd, &data->fail);
 606                 break;
 607         case WPS_EV_SUCCESS:
 608                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 609                 break;
 610         case WPS_EV_PWD_AUTH_FAIL:
 611                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 612                 break;
 613         case WPS_EV_PBC_OVERLAP:
 614                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 615                 break;
 616         case WPS_EV_PBC_TIMEOUT:
 617                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 618                 break;
 619         case WPS_EV_ER_AP_ADD:
 620                 break;
 621         case WPS_EV_ER_AP_REMOVE:
 622                 break;
 623         case WPS_EV_ER_ENROLLEE_ADD:
 624                 break;
 625         case WPS_EV_ER_ENROLLEE_REMOVE:
 626                 break;
 627         case WPS_EV_ER_AP_SETTINGS:
 628                 break;
 629         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 630                 break;
 631         }
 632         if (hapd->wps_event_cb)
 633                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 634 }
 635
 636
 637 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 638 {
 639         wpabuf_free(hapd->wps_beacon_ie);
 640         hapd->wps_beacon_ie = NULL;
 641
 642         wpabuf_free(hapd->wps_probe_resp_ie);
 643         hapd->wps_probe_resp_ie = NULL;
 644
 645         hostapd_set_ap_wps_ie(hapd);
 646 }
 647
 648
 649 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 650 {
 651         const u8 **uuid = ctx;
 652         size_t j;
 653
 654         if (iface == NULL)
 655                 return 0;
 656         for (j = 0; j < iface->num_bss; j++) {
 657                 struct hostapd_data *hapd = iface->bss[j];
 658                 if (hapd->wps && !is_nil_uuid(hapd->wps->uuid)) {
 659                         *uuid = hapd->wps->uuid;
 660                         return 1;
 661                 }
 662         }
 663
 664         return 0;
 665 }
 666
 667
 668 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 669 {
 670         const u8 *uuid;
 671         if (iface->for_each_interface == NULL)
 672                 return NULL;
 673         uuid = NULL;
 674         iface->for_each_interface(iface->interfaces, get_uuid_cb, &uuid);
 675         return uuid;
 676 }
 677
 678
 679 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 680 {
 681         int *count= ctx;
 682         (*count)++;
 683         return 0;
 684 }
 685
 686
 687 static int interface_count(struct hostapd_iface *iface)
 688 {
 689         int count = 0;
 690         if (iface->for_each_interface == NULL)
 691                 return 0;
 692         iface->for_each_interface(iface->interfaces, count_interface_cb,
 693                                   &count);
 694         return count;
 695 }
 696
 697
 698 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 699                                       struct wps_context *wps)
 700 {
 701         int i;
 702
 703         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 704                 wpabuf_free(wps->dev.vendor_ext[i]);
 705                 wps->dev.vendor_ext[i] = NULL;
 706
 707                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 708                         continue;
 709
 710                 wps->dev.vendor_ext[i] =
 711                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 712                 if (wps->dev.vendor_ext[i] == NULL) {
 713                         while (--i >= 0)
 714                                 wpabuf_free(wps->dev.vendor_ext[i]);
 715                         return -1;
 716                 }
 717         }
 718
 719         return 0;
 720 }
 721
 722
 723 int hostapd_init_wps(struct hostapd_data *hapd,
 724                      struct hostapd_bss_config *conf)
 725 {
 726         struct wps_context *wps;
 727         struct wps_registrar_config cfg;
 728
 729         if (conf->wps_state == 0) {
 730                 hostapd_wps_clear_ies(hapd);
 731                 return 0;
 732         }
 733
 734         wps = os_zalloc(sizeof(*wps));
 735         if (wps == NULL)
 736                 return -1;
 737
 738         wps->cred_cb = hostapd_wps_cred_cb;
 739         wps->event_cb = hostapd_wps_event_cb;
 740         wps->cb_ctx = hapd;
 741
 742         os_memset(&cfg, 0, sizeof(cfg));
 743         wps->wps_state = hapd->conf->wps_state;
 744         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 745         if (is_nil_uuid(hapd->conf->uuid)) {
 746                 const u8 *uuid;
 747                 uuid = get_own_uuid(hapd->iface);
 748                 if (uuid) {
 749                         os_memcpy(wps->uuid, uuid, UUID_LEN);
 750                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
 751                                     "interface", wps->uuid, UUID_LEN);
 752                 } else {
 753                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 754                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
 755                                     "address", wps->uuid, UUID_LEN);
 756                 }
 757         } else {
 758                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 759                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
 760                             wps->uuid, UUID_LEN);
 761         }
 762         wps->ssid_len = hapd->conf->ssid.ssid_len;
 763         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 764         wps->ap = 1;
 765         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 766         wps->dev.device_name = hapd->conf->device_name ?
 767                 os_strdup(hapd->conf->device_name) : NULL;
 768         wps->dev.manufacturer = hapd->conf->manufacturer ?
 769                 os_strdup(hapd->conf->manufacturer) : NULL;
 770         wps->dev.model_name = hapd->conf->model_name ?
 771                 os_strdup(hapd->conf->model_name) : NULL;
 772         wps->dev.model_number = hapd->conf->model_number ?
 773                 os_strdup(hapd->conf->model_number) : NULL;
 774         wps->dev.serial_number = hapd->conf->serial_number ?
 775                 os_strdup(hapd->conf->serial_number) : NULL;
 776         wps->config_methods =
 777                 wps_config_methods_str2bin(hapd->conf->config_methods);
 778 #ifdef CONFIG_WPS2
 779         if ((wps->config_methods &
 780              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 781               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
 782                 wpa_printf(MSG_INFO, "WPS: Converting display to "
 783                            "virtual_display for WPS 2.0 compliance");
 784                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
 785         }
 786         if ((wps->config_methods &
 787              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
 788               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
 789                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
 790                            "virtual_push_button for WPS 2.0 compliance");
 791                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
 792         }
 793 #endif /* CONFIG_WPS2 */
 794         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
 795                   WPS_DEV_TYPE_LEN);
 796
 797         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
 798                 os_free(wps);
 799                 return -1;
 800         }
 801
 802         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 803         wps->dev.rf_bands = hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 804                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 805
 806         if (conf->wpa & WPA_PROTO_RSN) {
 807                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 808                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 809                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 810                         wps->auth_types |= WPS_AUTH_WPA2;
 811
 812                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 813                         wps->encr_types |= WPS_ENCR_AES;
 814                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 815                         wps->encr_types |= WPS_ENCR_TKIP;
 816         }
 817
 818         if (conf->wpa & WPA_PROTO_WPA) {
 819                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 820                         wps->auth_types |= WPS_AUTH_WPAPSK;
 821                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 822                         wps->auth_types |= WPS_AUTH_WPA;
 823
 824                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 825                         wps->encr_types |= WPS_ENCR_AES;
 826                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 827                         wps->encr_types |= WPS_ENCR_TKIP;
 828         }
 829
 830         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 831                 wps->encr_types |= WPS_ENCR_NONE;
 832                 wps->auth_types |= WPS_AUTH_OPEN;
 833         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 834                 wps->encr_types |= WPS_ENCR_WEP;
 835                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 836                         wps->auth_types |= WPS_AUTH_OPEN;
 837                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 838                         wps->auth_types |= WPS_AUTH_SHARED;
 839         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 840                 wps->auth_types |= WPS_AUTH_OPEN;
 841                 if (conf->default_wep_key_len)
 842                         wps->encr_types |= WPS_ENCR_WEP;
 843                 else
 844                         wps->encr_types |= WPS_ENCR_NONE;
 845         }
 846
 847         if (conf->ssid.wpa_psk_file) {
 848                 /* Use per-device PSKs */
 849         } else if (conf->ssid.wpa_passphrase) {
 850                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 851                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 852         } else if (conf->ssid.wpa_psk) {
 853                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 854                 if (wps->network_key == NULL) {
 855                         os_free(wps);
 856                         return -1;
 857                 }
 858                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 859                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 860                 wps->network_key_len = 2 * PMK_LEN;
 861         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 862                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 863                 if (wps->network_key == NULL) {
 864                         os_free(wps);
 865                         return -1;
 866                 }
 867                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 868                           conf->ssid.wep.len[0]);
 869                 wps->network_key_len = conf->ssid.wep.len[0];
 870         }
 871
 872         if (conf->ssid.wpa_psk) {
 873                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 874                 wps->psk_set = 1;
 875         }
 876
 877         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 878                 /* Override parameters to enable security by default */
 879                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 880                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 881         }
 882
 883         wps->ap_settings = conf->ap_settings;
 884         wps->ap_settings_len = conf->ap_settings_len;
 885
 886         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 887         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 888         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 889         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 890         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
 891         cfg.cb_ctx = hapd;
 892         cfg.skip_cred_build = conf->skip_cred_build;
 893         cfg.extra_cred = conf->extra_cred;
 894         cfg.extra_cred_len = conf->extra_cred_len;
 895         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 896                 conf->skip_cred_build;
 897         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 898                 cfg.static_wep_only = 1;
 899         cfg.dualband = interface_count(hapd->iface) > 1;
 900         if (cfg.dualband)
 901                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
 902
 903         wps->registrar = wps_registrar_init(wps, &cfg);
 904         if (wps->registrar == NULL) {
 905                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
 906                 os_free(wps->network_key);
 907                 os_free(wps);
 908                 return -1;
 909         }
 910
 911 #ifdef CONFIG_WPS_UPNP
 912         wps->friendly_name = hapd->conf->friendly_name;
 913         wps->manufacturer_url = hapd->conf->manufacturer_url;
 914         wps->model_description = hapd->conf->model_description;
 915         wps->model_url = hapd->conf->model_url;
 916         wps->upc = hapd->conf->upc;
 917 #endif /* CONFIG_WPS_UPNP */
 918
 919         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 920
 921         hapd->wps = wps;
 922
 923         return 0;
 924 }
 925
 926
 927 int hostapd_init_wps_complete(struct hostapd_data *hapd)
 928 {
 929         struct wps_context *wps = hapd->wps;
 930
 931         if (wps == NULL)
 932                 return 0;
 933
 934 #ifdef CONFIG_WPS_UPNP
 935         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 936                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 937                 wps_registrar_deinit(wps->registrar);
 938                 os_free(wps->network_key);
 939                 os_free(wps);
 940                 hapd->wps = NULL;
 941                 return -1;
 942         }
 943 #endif /* CONFIG_WPS_UPNP */
 944
 945         return 0;
 946 }
 947
 948
 949 void hostapd_deinit_wps(struct hostapd_data *hapd)
 950 {
 951         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 952         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
 953         if (hapd->wps == NULL)
 954                 return;
 955 #ifdef CONFIG_WPS_UPNP
 956         hostapd_wps_upnp_deinit(hapd);
 957 #endif /* CONFIG_WPS_UPNP */
 958         wps_registrar_deinit(hapd->wps->registrar);
 959         os_free(hapd->wps->network_key);
 960         wps_device_data_free(&hapd->wps->dev);
 961         wpabuf_free(hapd->wps->dh_pubkey);
 962         wpabuf_free(hapd->wps->dh_privkey);
 963         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
 964         wpabuf_free(hapd->wps->oob_conf.dev_password);
 965         wps_free_pending_msgs(hapd->wps->upnp_msgs);
 966         os_free(hapd->wps);
 967         hapd->wps = NULL;
 968         hostapd_wps_clear_ies(hapd);
 969 }
 970
 971
 972 void hostapd_update_wps(struct hostapd_data *hapd)
 973 {
 974         if (hapd->wps == NULL)
 975                 return;
 976
 977 #ifdef CONFIG_WPS_UPNP
 978         hapd->wps->friendly_name = hapd->conf->friendly_name;
 979         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
 980         hapd->wps->model_description = hapd->conf->model_description;
 981         hapd->wps->model_url = hapd->conf->model_url;
 982         hapd->wps->upc = hapd->conf->upc;
 983 #endif /* CONFIG_WPS_UPNP */
 984
 985         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
 986
 987         if (hapd->conf->wps_state)
 988                 wps_registrar_update_ie(hapd->wps->registrar);
 989         else
 990                 hostapd_deinit_wps(hapd);
 991 }
 992
 993
 994 struct wps_add_pin_data {
 995         const u8 *addr;
 996         const u8 *uuid;
 997         const u8 *pin;
 998         size_t pin_len;
 999         int timeout;
1000         int added;
1001 };
1002
1003
1004 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1005 {
1006         struct wps_add_pin_data *data = ctx;
1007         int ret;
1008
1009         if (hapd->wps == NULL)
1010                 return 0;
1011         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1012                                     data->uuid, data->pin, data->pin_len,
1013                                     data->timeout);
1014         if (ret == 0)
1015                 data->added++;
1016         return ret;
1017 }
1018
1019
1020 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1021                         const char *uuid, const char *pin, int timeout)
1022 {
1023         u8 u[UUID_LEN];
1024         struct wps_add_pin_data data;
1025
1026         data.addr = addr;
1027         data.uuid = u;
1028         data.pin = (const u8 *) pin;
1029         data.pin_len = os_strlen(pin);
1030         data.timeout = timeout;
1031         data.added = 0;
1032
1033         if (os_strcmp(uuid, "any") == 0)
1034                 data.uuid = NULL;
1035         else {
1036                 if (uuid_str2bin(uuid, u))
1037                         return -1;
1038                 data.uuid = u;
1039         }
1040         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1041                 return -1;
1042         return data.added ? 0 : -1;
1043 }
1044
1045
1046 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1047 {
1048         const u8 *p2p_dev_addr = ctx;
1049         if (hapd->wps == NULL)
1050                 return 0;
1051         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1052 }
1053
1054
1055 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1056                               const u8 *p2p_dev_addr)
1057 {
1058         return hostapd_wps_for_each(hapd, wps_button_pushed,
1059                                     (void *) p2p_dev_addr);
1060 }
1061
1062
1063 #ifdef CONFIG_WPS_OOB
1064 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
1065                           char *path, char *method, char *name)
1066 {
1067         struct wps_context *wps = hapd->wps;
1068         struct oob_device_data *oob_dev;
1069
1070         oob_dev = wps_get_oob_device(device_type);
1071         if (oob_dev == NULL)
1072                 return -1;
1073         oob_dev->device_path = path;
1074         oob_dev->device_name = name;
1075         wps->oob_conf.oob_method = wps_get_oob_method(method);
1076
1077         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
1078                 /*
1079                  * Use pre-configured DH keys in order to be able to write the
1080                  * key hash into the OOB file.
1081                  */
1082                 wpabuf_free(wps->dh_pubkey);
1083                 wpabuf_free(wps->dh_privkey);
1084                 wps->dh_privkey = NULL;
1085                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
1086                                          &wps->dh_privkey);
1087                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1088                 if (wps->dh_pubkey == NULL) {
1089                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1090                                    "Diffie-Hellman handshake");
1091                         return -1;
1092                 }
1093         }
1094
1095         if (wps_process_oob(wps, oob_dev, 1) < 0)
1096                 goto error;
1097
1098         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1099              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1100             hostapd_wps_add_pin(hapd, NULL, "any",
1101                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
1102             0)
1103                 goto error;
1104
1105         return 0;
1106
1107 error:
1108         wpabuf_free(wps->dh_pubkey);
1109         wps->dh_pubkey = NULL;
1110         wpabuf_free(wps->dh_privkey);
1111         wps->dh_privkey = NULL;
1112         return -1;
1113 }
1114 #endif /* CONFIG_WPS_OOB */
1115
1116
1117 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1118                                     const u8 *bssid,
1119                                     const u8 *ie, size_t ie_len)
1120 {
1121         struct hostapd_data *hapd = ctx;
1122         struct wpabuf *wps_ie;
1123         struct ieee802_11_elems elems;
1124
1125         if (hapd->wps == NULL)
1126                 return 0;
1127
1128         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1129                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1130                            MACSTR, MAC2STR(addr));
1131                 return 0;
1132         }
1133
1134         if (elems.ssid && elems.ssid_len > 0 &&
1135             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1136              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1137              0))
1138                 return 0; /* Not for us */
1139
1140         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1141         if (wps_ie == NULL)
1142                 return 0;
1143         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1144                 wpabuf_free(wps_ie);
1145                 return 0;
1146         }
1147
1148         if (wpabuf_len(wps_ie) > 0) {
1149                 int p2p_wildcard = 0;
1150 #ifdef CONFIG_P2P
1151                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1152                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1153                               P2P_WILDCARD_SSID_LEN) == 0)
1154                         p2p_wildcard = 1;
1155 #endif /* CONFIG_P2P */
1156                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1157                                            p2p_wildcard);
1158 #ifdef CONFIG_WPS_UPNP
1159                 /* FIX: what exactly should be included in the WLANEvent?
1160                  * WPS attributes? Full ProbeReq frame? */
1161                 if (!p2p_wildcard)
1162                         upnp_wps_device_send_wlan_event(
1163                                 hapd->wps_upnp, addr,
1164                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1165 #endif /* CONFIG_WPS_UPNP */
1166         }
1167
1168         wpabuf_free(wps_ie);
1169
1170         return 0;
1171 }
1172
1173
1174 #ifdef CONFIG_WPS_UPNP
1175
1176 static int hostapd_rx_req_put_wlan_response(
1177         void *priv, enum upnp_wps_wlanevent_type ev_type,
1178         const u8 *mac_addr, const struct wpabuf *msg,
1179         enum wps_msg_type msg_type)
1180 {
1181         struct hostapd_data *hapd = priv;
1182         struct sta_info *sta;
1183         struct upnp_pending_message *p;
1184
1185         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1186                    MACSTR, ev_type, MAC2STR(mac_addr));
1187         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1188                     wpabuf_head(msg), wpabuf_len(msg));
1189         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1190                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1191                            "PutWLANResponse WLANEventType %d", ev_type);
1192                 return -1;
1193         }
1194
1195         /*
1196          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1197          * server implementation for delivery to the peer.
1198          */
1199
1200         sta = ap_get_sta(hapd, mac_addr);
1201 #ifndef CONFIG_WPS_STRICT
1202         if (!sta) {
1203                 /*
1204                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1205                  * Pick STA that is in an ongoing WPS registration without
1206                  * checking the MAC address.
1207                  */
1208                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1209                            "on NewWLANEventMAC; try wildcard match");
1210                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1211                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1212                                 break;
1213                 }
1214         }
1215 #endif /* CONFIG_WPS_STRICT */
1216
1217         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1218                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1219                 return 0;
1220         }
1221
1222         p = os_zalloc(sizeof(*p));
1223         if (p == NULL)
1224                 return -1;
1225         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1226         p->msg = wpabuf_dup(msg);
1227         p->type = msg_type;
1228         p->next = hapd->wps->upnp_msgs;
1229         hapd->wps->upnp_msgs = p;
1230
1231         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1232 }
1233
1234
1235 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1236                                  struct wps_context *wps)
1237 {
1238         struct upnp_wps_device_ctx *ctx;
1239
1240         if (!hapd->conf->upnp_iface)
1241                 return 0;
1242         ctx = os_zalloc(sizeof(*ctx));
1243         if (ctx == NULL)
1244                 return -1;
1245
1246         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1247         if (hapd->conf->ap_pin)
1248                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1249
1250         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1251                                               hapd->conf->upnp_iface);
1252         if (hapd->wps_upnp == NULL)
1253                 return -1;
1254         wps->wps_upnp = hapd->wps_upnp;
1255
1256         return 0;
1257 }
1258
1259
1260 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1261 {
1262         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1263 }
1264
1265 #endif /* CONFIG_WPS_UPNP */
1266
1267
1268 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1269                             char *buf, size_t buflen)
1270 {
1271         if (hapd->wps == NULL)
1272                 return 0;
1273         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1274 }
1275
1276
1277 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1278 {
1279         struct hostapd_data *hapd = eloop_data;
1280         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1281         hostapd_wps_ap_pin_disable(hapd);
1282         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1283 }
1284
1285
1286 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1287 {
1288         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1289         hapd->ap_pin_failures = 0;
1290         hapd->conf->ap_setup_locked = 0;
1291         if (hapd->wps->ap_setup_locked) {
1292                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1293                 hapd->wps->ap_setup_locked = 0;
1294                 wps_registrar_update_ie(hapd->wps->registrar);
1295         }
1296         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1297         if (timeout > 0)
1298                 eloop_register_timeout(timeout, 0,
1299                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1300 }
1301
1302
1303 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1304 {
1305         os_free(hapd->conf->ap_pin);
1306         hapd->conf->ap_pin = NULL;
1307 #ifdef CONFIG_WPS_UPNP
1308         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1309 #endif /* CONFIG_WPS_UPNP */
1310         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1311         return 0;
1312 }
1313
1314
1315 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1316 {
1317         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1318         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1319 }
1320
1321
1322 struct wps_ap_pin_data {
1323         char pin_txt[9];
1324         int timeout;
1325 };
1326
1327
1328 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1329 {
1330         struct wps_ap_pin_data *data = ctx;
1331         os_free(hapd->conf->ap_pin);
1332         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1333 #ifdef CONFIG_WPS_UPNP
1334         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1335 #endif /* CONFIG_WPS_UPNP */
1336         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1337         return 0;
1338 }
1339
1340
1341 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1342 {
1343         unsigned int pin;
1344         struct wps_ap_pin_data data;
1345
1346         pin = wps_generate_pin();
1347         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%u", pin);
1348         data.timeout = timeout;
1349         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1350         return hapd->conf->ap_pin;
1351 }
1352
1353
1354 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1355 {
1356         return hapd->conf->ap_pin;
1357 }
1358
1359
1360 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1361                            int timeout)
1362 {
1363         struct wps_ap_pin_data data;
1364         int ret;
1365
1366         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1367         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1368                 return -1;
1369         data.timeout = timeout;
1370         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1371 }
1372
1373
1374 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1375 {
1376         if (hapd->wps)
1377                 wps_registrar_update_ie(hapd->wps->registrar);
1378         return 0;
1379 }
1380
1381
1382 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1383 {
1384         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1385 }
1386
1387
1388 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1389                           const char *auth, const char *encr, const char *key)
1390 {
1391         struct wps_credential cred;
1392         size_t len;
1393
1394         os_memset(&cred, 0, sizeof(cred));
1395
1396         len = os_strlen(ssid);
1397         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1398             hexstr2bin(ssid, cred.ssid, len / 2))
1399                 return -1;
1400         cred.ssid_len = len / 2;
1401
1402         if (os_strncmp(auth, "OPEN", 4) == 0)
1403                 cred.auth_type = WPS_AUTH_OPEN;
1404         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1405                 cred.auth_type = WPS_AUTH_WPAPSK;
1406         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1407                 cred.auth_type = WPS_AUTH_WPA2PSK;
1408         else
1409                 return -1;
1410
1411         if (encr) {
1412                 if (os_strncmp(encr, "NONE", 4) == 0)
1413                         cred.encr_type = WPS_ENCR_NONE;
1414                 else if (os_strncmp(encr, "WEP", 3) == 0)
1415                         cred.encr_type = WPS_ENCR_WEP;
1416                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1417                         cred.encr_type = WPS_ENCR_TKIP;
1418                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1419                         cred.encr_type = WPS_ENCR_AES;
1420                 else
1421                         return -1;
1422         } else
1423                 cred.encr_type = WPS_ENCR_NONE;
1424
1425         if (key) {
1426                 len = os_strlen(key);
1427                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1428                     hexstr2bin(key, cred.key, len / 2))
1429                         return -1;
1430                 cred.key_len = len / 2;
1431         }
1432
1433         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1434 }