contrib/wpa/src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "utils/uuid.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "eapol_auth/eapol_auth_sm.h"
  18 #include "eapol_auth/eapol_auth_sm_i.h"
  19 #include "wps/wps.h"
  20 #include "wps/wps_defs.h"
  21 #include "wps/wps_dev_attr.h"
  22 #include "wps/wps_attr_parse.h"
  23 #include "hostapd.h"
  24 #include "ap_config.h"
  25 #include "ap_drv_ops.h"
  26 #include "beacon.h"
  27 #include "sta_info.h"
  28 #include "wps_hostapd.h"
  29
  30
  31 #ifdef CONFIG_WPS_UPNP
  32 #include "wps/wps_upnp.h"
  33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  34                                  struct wps_context *wps);
  35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  36 #endif /* CONFIG_WPS_UPNP */
  37
  38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  39                                     const u8 *bssid,
  40                                     const u8 *ie, size_t ie_len,
  41                                     int ssi_signal);
  42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  43
  44
  45 struct wps_for_each_data {
  46         int (*func)(struct hostapd_data *h, void *ctx);
  47         void *ctx;
  48 };
  49
  50
  51 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  52 {
  53         struct wps_for_each_data *data = ctx;
  54         size_t j;
  55
  56         if (iface == NULL)
  57                 return 0;
  58         for (j = 0; j < iface->num_bss; j++) {
  59                 struct hostapd_data *hapd = iface->bss[j];
  60                 int ret = data->func(hapd, data->ctx);
  61                 if (ret)
  62                         return ret;
  63         }
  64
  65         return 0;
  66 }
  67
  68
  69 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  70                                 int (*func)(struct hostapd_data *h, void *ctx),
  71                                 void *ctx)
  72 {
  73         struct hostapd_iface *iface = hapd->iface;
  74         struct wps_for_each_data data;
  75         data.func = func;
  76         data.ctx = ctx;
  77         if (iface->interfaces == NULL ||
  78             iface->interfaces->for_each_interface == NULL)
  79                 return wps_for_each(iface, &data);
  80         return iface->interfaces->for_each_interface(iface->interfaces,
  81                                                      wps_for_each, &data);
  82 }
  83
  84
  85 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  86                                   size_t psk_len)
  87 {
  88         struct hostapd_data *hapd = ctx;
  89         struct hostapd_wpa_psk *p;
  90         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  91
  92         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  93                    MACSTR, MAC2STR(mac_addr));
  94         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  95
  96         if (psk_len != PMK_LEN) {
  97                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
  98                            (unsigned long) psk_len);
  99                 return -1;
 100         }
 101
 102         /* Add the new PSK to runtime PSK list */
 103         p = os_zalloc(sizeof(*p));
 104         if (p == NULL)
 105                 return -1;
 106         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 107         os_memcpy(p->psk, psk, PMK_LEN);
 108
 109         p->next = ssid->wpa_psk;
 110         ssid->wpa_psk = p;
 111
 112         if (ssid->wpa_psk_file) {
 113                 FILE *f;
 114                 char hex[PMK_LEN * 2 + 1];
 115                 /* Add the new PSK to PSK list file */
 116                 f = fopen(ssid->wpa_psk_file, "a");
 117                 if (f == NULL) {
 118                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 119                                    "'%s'", ssid->wpa_psk_file);
 120                         return -1;
 121                 }
 122
 123                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 124                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 125                 fclose(f);
 126         }
 127
 128         return 0;
 129 }
 130
 131
 132 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 133                                  struct wpabuf *probe_resp_ie)
 134 {
 135         struct hostapd_data *hapd = ctx;
 136         wpabuf_free(hapd->wps_beacon_ie);
 137         hapd->wps_beacon_ie = beacon_ie;
 138         wpabuf_free(hapd->wps_probe_resp_ie);
 139         hapd->wps_probe_resp_ie = probe_resp_ie;
 140         if (hapd->beacon_set_done)
 141                 ieee802_11_set_beacon(hapd);
 142         return hostapd_set_ap_wps_ie(hapd);
 143 }
 144
 145
 146 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 147                                       const struct wps_device_data *dev)
 148 {
 149         struct hostapd_data *hapd = ctx;
 150         char uuid[40], txt[400];
 151         int len;
 152         char devtype[WPS_DEV_TYPE_BUFSIZE];
 153         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 154                 return;
 155         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 156         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 157                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 158                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 159                           dev->manufacturer, dev->model_name,
 160                           dev->model_number, dev->serial_number,
 161                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 162                                                sizeof(devtype)));
 163         if (len > 0 && len < (int) sizeof(txt))
 164                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 165
 166         if (hapd->conf->wps_pin_requests) {
 167                 FILE *f;
 168                 struct os_time t;
 169                 f = fopen(hapd->conf->wps_pin_requests, "a");
 170                 if (f == NULL)
 171                         return;
 172                 os_get_time(&t);
 173                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 174                         "\t%s\n",
 175                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 176                         dev->manufacturer, dev->model_name, dev->model_number,
 177                         dev->serial_number,
 178                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 179                                              sizeof(devtype)));
 180                 fclose(f);
 181         }
 182 }
 183
 184
 185 struct wps_stop_reg_data {
 186         struct hostapd_data *current_hapd;
 187         const u8 *uuid_e;
 188         const u8 *dev_pw;
 189         size_t dev_pw_len;
 190 };
 191
 192 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
 193 {
 194         struct wps_stop_reg_data *data = ctx;
 195         if (hapd != data->current_hapd && hapd->wps != NULL)
 196                 wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
 197                                        data->dev_pw, data->dev_pw_len);
 198         return 0;
 199 }
 200
 201
 202 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 203                                        const u8 *uuid_e, const u8 *dev_pw,
 204                                        size_t dev_pw_len)
 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         data.dev_pw = dev_pw;
 219         data.dev_pw_len = dev_pw_len;
 220         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 221 }
 222
 223
 224 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 225                                          const u8 *uuid_e,
 226                                          const u8 *pri_dev_type,
 227                                          u16 config_methods,
 228                                          u16 dev_password_id, u8 request_type,
 229                                          const char *dev_name)
 230 {
 231         struct hostapd_data *hapd = ctx;
 232         char uuid[40];
 233         char devtype[WPS_DEV_TYPE_BUFSIZE];
 234         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 235                 return;
 236         if (dev_name == NULL)
 237                 dev_name = "";
 238         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 239                      " %s %s 0x%x %u %u [%s]",
 240                      MAC2STR(addr), uuid,
 241                      wps_dev_type_bin2str(pri_dev_type, devtype,
 242                                           sizeof(devtype)),
 243                      config_methods, dev_password_id, request_type, dev_name);
 244 }
 245
 246
 247 static int str_starts(const char *str, const char *start)
 248 {
 249         return os_strncmp(str, start, os_strlen(start)) == 0;
 250 }
 251
 252
 253 static void wps_reload_config(void *eloop_data, void *user_ctx)
 254 {
 255         struct hostapd_iface *iface = eloop_data;
 256
 257         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 258         if (iface->interfaces == NULL ||
 259             iface->interfaces->reload_config(iface) < 0) {
 260                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 261                            "configuration");
 262         }
 263 }
 264
 265
 266 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 267                               size_t attr_len)
 268 {
 269         size_t blen = attr_len * 2 + 1;
 270         char *buf = os_malloc(blen);
 271         if (buf) {
 272                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 273                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 274                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 275                 os_free(buf);
 276         }
 277 }
 278
 279
 280 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 281 {
 282         const struct wps_credential *cred = ctx;
 283         FILE *oconf, *nconf;
 284         size_t len, i;
 285         char *tmp_fname;
 286         char buf[1024];
 287         int multi_bss;
 288         int wpa;
 289
 290         if (hapd->wps == NULL)
 291                 return 0;
 292
 293         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 294                         cred->cred_attr, cred->cred_attr_len);
 295
 296         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 297         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 298         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 299                    cred->auth_type);
 300         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 301         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 302         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 303                         cred->key, cred->key_len);
 304         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 305                    MAC2STR(cred->mac_addr));
 306
 307         if ((hapd->conf->wps_cred_processing == 1 ||
 308              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 309                 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
 310         } else if (hapd->conf->wps_cred_processing == 1 ||
 311                    hapd->conf->wps_cred_processing == 2) {
 312                 struct wpabuf *attr;
 313                 attr = wpabuf_alloc(200);
 314                 if (attr && wps_build_credential_wrap(attr, cred) == 0)
 315                         hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
 316                                           wpabuf_len(attr));
 317                 wpabuf_free(attr);
 318         } else
 319                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 320
 321         if (hapd->conf->wps_cred_processing == 1)
 322                 return 0;
 323
 324         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 325         hapd->wps->ssid_len = cred->ssid_len;
 326         hapd->wps->encr_types = cred->encr_type;
 327         hapd->wps->auth_types = cred->auth_type;
 328         if (cred->key_len == 0) {
 329                 os_free(hapd->wps->network_key);
 330                 hapd->wps->network_key = NULL;
 331                 hapd->wps->network_key_len = 0;
 332         } else {
 333                 if (hapd->wps->network_key == NULL ||
 334                     hapd->wps->network_key_len < cred->key_len) {
 335                         hapd->wps->network_key_len = 0;
 336                         os_free(hapd->wps->network_key);
 337                         hapd->wps->network_key = os_malloc(cred->key_len);
 338                         if (hapd->wps->network_key == NULL)
 339                                 return -1;
 340                 }
 341                 hapd->wps->network_key_len = cred->key_len;
 342                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 343         }
 344         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 345
 346         if (hapd->iface->config_fname == NULL)
 347                 return 0;
 348         len = os_strlen(hapd->iface->config_fname) + 5;
 349         tmp_fname = os_malloc(len);
 350         if (tmp_fname == NULL)
 351                 return -1;
 352         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 353
 354         oconf = fopen(hapd->iface->config_fname, "r");
 355         if (oconf == NULL) {
 356                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 357                            "configuration file");
 358                 os_free(tmp_fname);
 359                 return -1;
 360         }
 361
 362         nconf = fopen(tmp_fname, "w");
 363         if (nconf == NULL) {
 364                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 365                            "configuration file");
 366                 os_free(tmp_fname);
 367                 fclose(oconf);
 368                 return -1;
 369         }
 370
 371         fprintf(nconf, "# WPS configuration - START\n");
 372
 373         fprintf(nconf, "wps_state=2\n");
 374
 375         if (is_hex(cred->ssid, cred->ssid_len)) {
 376                 fprintf(nconf, "ssid2=");
 377                 for (i = 0; i < cred->ssid_len; i++)
 378                         fprintf(nconf, "%02x", cred->ssid[i]);
 379                 fprintf(nconf, "\n");
 380         } else {
 381                 fprintf(nconf, "ssid=");
 382                 for (i = 0; i < cred->ssid_len; i++)
 383                         fputc(cred->ssid[i], nconf);
 384                 fprintf(nconf, "\n");
 385         }
 386
 387         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 388             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 389                 wpa = 3;
 390         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 391                 wpa = 2;
 392         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 393                 wpa = 1;
 394         else
 395                 wpa = 0;
 396
 397         if (wpa) {
 398                 char *prefix;
 399                 fprintf(nconf, "wpa=%d\n", wpa);
 400
 401                 fprintf(nconf, "wpa_key_mgmt=");
 402                 prefix = "";
 403                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 404                         fprintf(nconf, "WPA-EAP");
 405                         prefix = " ";
 406                 }
 407                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 408                         fprintf(nconf, "%sWPA-PSK", prefix);
 409                 fprintf(nconf, "\n");
 410
 411                 fprintf(nconf, "wpa_pairwise=");
 412                 prefix = "";
 413                 if (cred->encr_type & WPS_ENCR_AES) {
 414                         fprintf(nconf, "CCMP");
 415                         prefix = " ";
 416                 }
 417                 if (cred->encr_type & WPS_ENCR_TKIP) {
 418                         fprintf(nconf, "%sTKIP", prefix);
 419                 }
 420                 fprintf(nconf, "\n");
 421
 422                 if (cred->key_len >= 8 && cred->key_len < 64) {
 423                         fprintf(nconf, "wpa_passphrase=");
 424                         for (i = 0; i < cred->key_len; i++)
 425                                 fputc(cred->key[i], nconf);
 426                         fprintf(nconf, "\n");
 427                 } else if (cred->key_len == 64) {
 428                         fprintf(nconf, "wpa_psk=");
 429                         for (i = 0; i < cred->key_len; i++)
 430                                 fputc(cred->key[i], nconf);
 431                         fprintf(nconf, "\n");
 432                 } else {
 433                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 434                                    "for WPA/WPA2",
 435                                    (unsigned long) cred->key_len);
 436                 }
 437
 438                 fprintf(nconf, "auth_algs=1\n");
 439         } else {
 440                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 441                     (cred->auth_type & WPS_AUTH_SHARED))
 442                         fprintf(nconf, "auth_algs=3\n");
 443                 else if (cred->auth_type & WPS_AUTH_SHARED)
 444                         fprintf(nconf, "auth_algs=2\n");
 445                 else
 446                         fprintf(nconf, "auth_algs=1\n");
 447
 448                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 449                         int key_idx = cred->key_idx;
 450                         if (key_idx)
 451                                 key_idx--;
 452                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 453                         fprintf(nconf, "wep_key%d=", key_idx);
 454                         if (cred->key_len == 10 || cred->key_len == 26) {
 455                                 /* WEP key as a hex string */
 456                                 for (i = 0; i < cred->key_len; i++)
 457                                         fputc(cred->key[i], nconf);
 458                         } else {
 459                                 /* Raw WEP key; convert to hex */
 460                                 for (i = 0; i < cred->key_len; i++)
 461                                         fprintf(nconf, "%02x", cred->key[i]);
 462                         }
 463                         fprintf(nconf, "\n");
 464                 }
 465         }
 466
 467         fprintf(nconf, "# WPS configuration - END\n");
 468
 469         multi_bss = 0;
 470         while (fgets(buf, sizeof(buf), oconf)) {
 471                 if (os_strncmp(buf, "bss=", 4) == 0)
 472                         multi_bss = 1;
 473                 if (!multi_bss &&
 474                     (str_starts(buf, "ssid=") ||
 475                      str_starts(buf, "ssid2=") ||
 476                      str_starts(buf, "auth_algs=") ||
 477                      str_starts(buf, "wep_default_key=") ||
 478                      str_starts(buf, "wep_key") ||
 479                      str_starts(buf, "wps_state=") ||
 480                      str_starts(buf, "wpa=") ||
 481                      str_starts(buf, "wpa_psk=") ||
 482                      str_starts(buf, "wpa_pairwise=") ||
 483                      str_starts(buf, "rsn_pairwise=") ||
 484                      str_starts(buf, "wpa_key_mgmt=") ||
 485                      str_starts(buf, "wpa_passphrase="))) {
 486                         fprintf(nconf, "#WPS# %s", buf);
 487                 } else
 488                         fprintf(nconf, "%s", buf);
 489         }
 490
 491         fclose(nconf);
 492         fclose(oconf);
 493
 494         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 495                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 496                            "configuration file: %s", strerror(errno));
 497                 os_free(tmp_fname);
 498                 return -1;
 499         }
 500
 501         os_free(tmp_fname);
 502
 503         /* Schedule configuration reload after short period of time to allow
 504          * EAP-WSC to be finished.
 505          */
 506         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 507                                NULL);
 508
 509         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 510
 511         return 0;
 512 }
 513
 514
 515 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 516 {
 517         struct hostapd_data *hapd = ctx;
 518         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 519 }
 520
 521
 522 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 523 {
 524         struct hostapd_data *hapd = eloop_data;
 525
 526         if (hapd->conf->ap_setup_locked)
 527                 return;
 528         if (hapd->ap_pin_failures_consecutive >= 10)
 529                 return;
 530
 531         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 532         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 533         hapd->wps->ap_setup_locked = 0;
 534         wps_registrar_update_ie(hapd->wps->registrar);
 535 }
 536
 537
 538 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 539 {
 540         struct wps_event_pwd_auth_fail *data = ctx;
 541
 542         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 543                 return 0;
 544
 545         /*
 546          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 547          * for some time if this happens multiple times to slow down brute
 548          * force attacks.
 549          */
 550         hapd->ap_pin_failures++;
 551         hapd->ap_pin_failures_consecutive++;
 552         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 553                    "(%u consecutive)",
 554                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 555         if (hapd->ap_pin_failures < 3)
 556                 return 0;
 557
 558         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 559         hapd->wps->ap_setup_locked = 1;
 560
 561         wps_registrar_update_ie(hapd->wps->registrar);
 562
 563         if (!hapd->conf->ap_setup_locked &&
 564             hapd->ap_pin_failures_consecutive >= 10) {
 565                 /*
 566                  * In indefinite lockdown - disable automatic AP PIN
 567                  * reenablement.
 568                  */
 569                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 570                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 571         } else if (!hapd->conf->ap_setup_locked) {
 572                 if (hapd->ap_pin_lockout_time == 0)
 573                         hapd->ap_pin_lockout_time = 60;
 574                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 575                          (hapd->ap_pin_failures % 3) == 0)
 576                         hapd->ap_pin_lockout_time *= 2;
 577
 578                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 579                            hapd->ap_pin_lockout_time);
 580                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 581                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 582                                        hostapd_wps_reenable_ap_pin, hapd,
 583                                        NULL);
 584         }
 585
 586         return 0;
 587 }
 588
 589
 590 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 591                                   struct wps_event_pwd_auth_fail *data)
 592 {
 593         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 594 }
 595
 596
 597 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 598 {
 599         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 600                 return 0;
 601
 602         if (hapd->ap_pin_failures_consecutive == 0)
 603                 return 0;
 604
 605         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 606                    "- total validation failures %u (%u consecutive)",
 607                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 608         hapd->ap_pin_failures_consecutive = 0;
 609
 610         return 0;
 611 }
 612
 613
 614 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 615 {
 616         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 617 }
 618
 619
 620 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 621         "No Error", /* WPS_EI_NO_ERROR */
 622         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 623         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 624 };
 625
 626 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 627                                    struct wps_event_fail *fail)
 628 {
 629         if (fail->error_indication > 0 &&
 630             fail->error_indication < NUM_WPS_EI_VALUES) {
 631                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 632                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 633                         fail->msg, fail->config_error, fail->error_indication,
 634                         wps_event_fail_reason[fail->error_indication]);
 635         } else {
 636                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 637                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 638                         fail->msg, fail->config_error);
 639         }
 640 }
 641
 642
 643 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 644                                  union wps_event_data *data)
 645 {
 646         struct hostapd_data *hapd = ctx;
 647
 648         switch (event) {
 649         case WPS_EV_M2D:
 650                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 651                 break;
 652         case WPS_EV_FAIL:
 653                 hostapd_wps_event_fail(hapd, &data->fail);
 654                 break;
 655         case WPS_EV_SUCCESS:
 656                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 657                 break;
 658         case WPS_EV_PWD_AUTH_FAIL:
 659                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 660                 break;
 661         case WPS_EV_PBC_OVERLAP:
 662                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 663                 break;
 664         case WPS_EV_PBC_TIMEOUT:
 665                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 666                 break;
 667         case WPS_EV_ER_AP_ADD:
 668                 break;
 669         case WPS_EV_ER_AP_REMOVE:
 670                 break;
 671         case WPS_EV_ER_ENROLLEE_ADD:
 672                 break;
 673         case WPS_EV_ER_ENROLLEE_REMOVE:
 674                 break;
 675         case WPS_EV_ER_AP_SETTINGS:
 676                 break;
 677         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 678                 break;
 679         case WPS_EV_AP_PIN_SUCCESS:
 680                 hostapd_wps_ap_pin_success(hapd);
 681                 break;
 682         }
 683         if (hapd->wps_event_cb)
 684                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 685 }
 686
 687
 688 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 689 {
 690         wpabuf_free(hapd->wps_beacon_ie);
 691         hapd->wps_beacon_ie = NULL;
 692
 693         wpabuf_free(hapd->wps_probe_resp_ie);
 694         hapd->wps_probe_resp_ie = NULL;
 695
 696         hostapd_set_ap_wps_ie(hapd);
 697 }
 698
 699
 700 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 701 {
 702         const u8 **uuid = ctx;
 703         size_t j;
 704
 705         if (iface == NULL)
 706                 return 0;
 707         for (j = 0; j < iface->num_bss; j++) {
 708                 struct hostapd_data *hapd = iface->bss[j];
 709                 if (hapd->wps && !is_nil_uuid(hapd->wps->uuid)) {
 710                         *uuid = hapd->wps->uuid;
 711                         return 1;
 712                 }
 713         }
 714
 715         return 0;
 716 }
 717
 718
 719 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 720 {
 721         const u8 *uuid;
 722         if (iface->interfaces == NULL ||
 723             iface->interfaces->for_each_interface == NULL)
 724                 return NULL;
 725         uuid = NULL;
 726         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 727                                               &uuid);
 728         return uuid;
 729 }
 730
 731
 732 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 733 {
 734         int *count= ctx;
 735         (*count)++;
 736         return 0;
 737 }
 738
 739
 740 static int interface_count(struct hostapd_iface *iface)
 741 {
 742         int count = 0;
 743         if (iface->interfaces == NULL ||
 744             iface->interfaces->for_each_interface == NULL)
 745                 return 0;
 746         iface->interfaces->for_each_interface(iface->interfaces,
 747                                               count_interface_cb, &count);
 748         return count;
 749 }
 750
 751
 752 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 753                                       struct wps_context *wps)
 754 {
 755         int i;
 756
 757         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 758                 wpabuf_free(wps->dev.vendor_ext[i]);
 759                 wps->dev.vendor_ext[i] = NULL;
 760
 761                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 762                         continue;
 763
 764                 wps->dev.vendor_ext[i] =
 765                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 766                 if (wps->dev.vendor_ext[i] == NULL) {
 767                         while (--i >= 0)
 768                                 wpabuf_free(wps->dev.vendor_ext[i]);
 769                         return -1;
 770                 }
 771         }
 772
 773         return 0;
 774 }
 775
 776
 777 int hostapd_init_wps(struct hostapd_data *hapd,
 778                      struct hostapd_bss_config *conf)
 779 {
 780         struct wps_context *wps;
 781         struct wps_registrar_config cfg;
 782
 783         if (conf->wps_state == 0) {
 784                 hostapd_wps_clear_ies(hapd);
 785                 return 0;
 786         }
 787
 788         wps = os_zalloc(sizeof(*wps));
 789         if (wps == NULL)
 790                 return -1;
 791
 792         wps->cred_cb = hostapd_wps_cred_cb;
 793         wps->event_cb = hostapd_wps_event_cb;
 794         wps->cb_ctx = hapd;
 795
 796         os_memset(&cfg, 0, sizeof(cfg));
 797         wps->wps_state = hapd->conf->wps_state;
 798         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 799         if (is_nil_uuid(hapd->conf->uuid)) {
 800                 const u8 *uuid;
 801                 uuid = get_own_uuid(hapd->iface);
 802                 if (uuid) {
 803                         os_memcpy(wps->uuid, uuid, UUID_LEN);
 804                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
 805                                     "interface", wps->uuid, UUID_LEN);
 806                 } else {
 807                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 808                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
 809                                     "address", wps->uuid, UUID_LEN);
 810                 }
 811         } else {
 812                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 813                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
 814                             wps->uuid, UUID_LEN);
 815         }
 816         wps->ssid_len = hapd->conf->ssid.ssid_len;
 817         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 818         wps->ap = 1;
 819         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 820         wps->dev.device_name = hapd->conf->device_name ?
 821                 os_strdup(hapd->conf->device_name) : NULL;
 822         wps->dev.manufacturer = hapd->conf->manufacturer ?
 823                 os_strdup(hapd->conf->manufacturer) : NULL;
 824         wps->dev.model_name = hapd->conf->model_name ?
 825                 os_strdup(hapd->conf->model_name) : NULL;
 826         wps->dev.model_number = hapd->conf->model_number ?
 827                 os_strdup(hapd->conf->model_number) : NULL;
 828         wps->dev.serial_number = hapd->conf->serial_number ?
 829                 os_strdup(hapd->conf->serial_number) : NULL;
 830         wps->config_methods =
 831                 wps_config_methods_str2bin(hapd->conf->config_methods);
 832 #ifdef CONFIG_WPS2
 833         if ((wps->config_methods &
 834              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 835               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
 836                 wpa_printf(MSG_INFO, "WPS: Converting display to "
 837                            "virtual_display for WPS 2.0 compliance");
 838                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
 839         }
 840         if ((wps->config_methods &
 841              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
 842               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
 843                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
 844                            "virtual_push_button for WPS 2.0 compliance");
 845                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
 846         }
 847 #endif /* CONFIG_WPS2 */
 848         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
 849                   WPS_DEV_TYPE_LEN);
 850
 851         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
 852                 os_free(wps);
 853                 return -1;
 854         }
 855
 856         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 857
 858         if (conf->wps_rf_bands) {
 859                 wps->dev.rf_bands = conf->wps_rf_bands;
 860         } else {
 861                 wps->dev.rf_bands =
 862                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 863                         WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 864         }
 865
 866         if (conf->wpa & WPA_PROTO_RSN) {
 867                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 868                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 869                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 870                         wps->auth_types |= WPS_AUTH_WPA2;
 871
 872                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 873                         wps->encr_types |= WPS_ENCR_AES;
 874                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 875                         wps->encr_types |= WPS_ENCR_TKIP;
 876         }
 877
 878         if (conf->wpa & WPA_PROTO_WPA) {
 879                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 880                         wps->auth_types |= WPS_AUTH_WPAPSK;
 881                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 882                         wps->auth_types |= WPS_AUTH_WPA;
 883
 884                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 885                         wps->encr_types |= WPS_ENCR_AES;
 886                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 887                         wps->encr_types |= WPS_ENCR_TKIP;
 888         }
 889
 890         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 891                 wps->encr_types |= WPS_ENCR_NONE;
 892                 wps->auth_types |= WPS_AUTH_OPEN;
 893         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 894                 wps->encr_types |= WPS_ENCR_WEP;
 895                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 896                         wps->auth_types |= WPS_AUTH_OPEN;
 897                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 898                         wps->auth_types |= WPS_AUTH_SHARED;
 899         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 900                 wps->auth_types |= WPS_AUTH_OPEN;
 901                 if (conf->default_wep_key_len)
 902                         wps->encr_types |= WPS_ENCR_WEP;
 903                 else
 904                         wps->encr_types |= WPS_ENCR_NONE;
 905         }
 906
 907         if (conf->ssid.wpa_psk_file) {
 908                 /* Use per-device PSKs */
 909         } else if (conf->ssid.wpa_passphrase) {
 910                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 911                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 912         } else if (conf->ssid.wpa_psk) {
 913                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 914                 if (wps->network_key == NULL) {
 915                         os_free(wps);
 916                         return -1;
 917                 }
 918                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 919                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 920                 wps->network_key_len = 2 * PMK_LEN;
 921         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 922                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 923                 if (wps->network_key == NULL) {
 924                         os_free(wps);
 925                         return -1;
 926                 }
 927                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 928                           conf->ssid.wep.len[0]);
 929                 wps->network_key_len = conf->ssid.wep.len[0];
 930         }
 931
 932         if (conf->ssid.wpa_psk) {
 933                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 934                 wps->psk_set = 1;
 935         }
 936
 937         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 938                 /* Override parameters to enable security by default */
 939                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 940                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 941         }
 942
 943         wps->ap_settings = conf->ap_settings;
 944         wps->ap_settings_len = conf->ap_settings_len;
 945
 946         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 947         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 948         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 949         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 950         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
 951         cfg.cb_ctx = hapd;
 952         cfg.skip_cred_build = conf->skip_cred_build;
 953         cfg.extra_cred = conf->extra_cred;
 954         cfg.extra_cred_len = conf->extra_cred_len;
 955         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 956                 conf->skip_cred_build;
 957         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 958                 cfg.static_wep_only = 1;
 959         cfg.dualband = interface_count(hapd->iface) > 1;
 960         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
 961             (WPS_RF_50GHZ | WPS_RF_24GHZ))
 962                 cfg.dualband = 1;
 963         if (cfg.dualband)
 964                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
 965
 966         wps->registrar = wps_registrar_init(wps, &cfg);
 967         if (wps->registrar == NULL) {
 968                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
 969                 os_free(wps->network_key);
 970                 os_free(wps);
 971                 return -1;
 972         }
 973
 974 #ifdef CONFIG_WPS_UPNP
 975         wps->friendly_name = hapd->conf->friendly_name;
 976         wps->manufacturer_url = hapd->conf->manufacturer_url;
 977         wps->model_description = hapd->conf->model_description;
 978         wps->model_url = hapd->conf->model_url;
 979         wps->upc = hapd->conf->upc;
 980 #endif /* CONFIG_WPS_UPNP */
 981
 982         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 983
 984         hapd->wps = wps;
 985
 986         return 0;
 987 }
 988
 989
 990 int hostapd_init_wps_complete(struct hostapd_data *hapd)
 991 {
 992         struct wps_context *wps = hapd->wps;
 993
 994         if (wps == NULL)
 995                 return 0;
 996
 997 #ifdef CONFIG_WPS_UPNP
 998         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 999                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1000                 wps_registrar_deinit(wps->registrar);
1001                 os_free(wps->network_key);
1002                 os_free(wps);
1003                 hapd->wps = NULL;
1004                 return -1;
1005         }
1006 #endif /* CONFIG_WPS_UPNP */
1007
1008         return 0;
1009 }
1010
1011
1012 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1013 {
1014 #ifdef CONFIG_WPS_NFC
1015         wps->ap_nfc_dev_pw_id = 0;
1016         wpabuf_free(wps->ap_nfc_dh_pubkey);
1017         wps->ap_nfc_dh_pubkey = NULL;
1018         wpabuf_free(wps->ap_nfc_dh_privkey);
1019         wps->ap_nfc_dh_privkey = NULL;
1020         wpabuf_free(wps->ap_nfc_dev_pw);
1021         wps->ap_nfc_dev_pw = NULL;
1022 #endif /* CONFIG_WPS_NFC */
1023 }
1024
1025
1026 void hostapd_deinit_wps(struct hostapd_data *hapd)
1027 {
1028         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1029         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1030         if (hapd->wps == NULL)
1031                 return;
1032 #ifdef CONFIG_WPS_UPNP
1033         hostapd_wps_upnp_deinit(hapd);
1034 #endif /* CONFIG_WPS_UPNP */
1035         wps_registrar_deinit(hapd->wps->registrar);
1036         os_free(hapd->wps->network_key);
1037         wps_device_data_free(&hapd->wps->dev);
1038         wpabuf_free(hapd->wps->dh_pubkey);
1039         wpabuf_free(hapd->wps->dh_privkey);
1040         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1041         hostapd_wps_nfc_clear(hapd->wps);
1042         os_free(hapd->wps);
1043         hapd->wps = NULL;
1044         hostapd_wps_clear_ies(hapd);
1045 }
1046
1047
1048 void hostapd_update_wps(struct hostapd_data *hapd)
1049 {
1050         if (hapd->wps == NULL)
1051                 return;
1052
1053 #ifdef CONFIG_WPS_UPNP
1054         hapd->wps->friendly_name = hapd->conf->friendly_name;
1055         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1056         hapd->wps->model_description = hapd->conf->model_description;
1057         hapd->wps->model_url = hapd->conf->model_url;
1058         hapd->wps->upc = hapd->conf->upc;
1059 #endif /* CONFIG_WPS_UPNP */
1060
1061         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1062
1063         if (hapd->conf->wps_state)
1064                 wps_registrar_update_ie(hapd->wps->registrar);
1065         else
1066                 hostapd_deinit_wps(hapd);
1067 }
1068
1069
1070 struct wps_add_pin_data {
1071         const u8 *addr;
1072         const u8 *uuid;
1073         const u8 *pin;
1074         size_t pin_len;
1075         int timeout;
1076         int added;
1077 };
1078
1079
1080 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1081 {
1082         struct wps_add_pin_data *data = ctx;
1083         int ret;
1084
1085         if (hapd->wps == NULL)
1086                 return 0;
1087         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1088                                     data->uuid, data->pin, data->pin_len,
1089                                     data->timeout);
1090         if (ret == 0)
1091                 data->added++;
1092         return ret;
1093 }
1094
1095
1096 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1097                         const char *uuid, const char *pin, int timeout)
1098 {
1099         u8 u[UUID_LEN];
1100         struct wps_add_pin_data data;
1101
1102         data.addr = addr;
1103         data.uuid = u;
1104         data.pin = (const u8 *) pin;
1105         data.pin_len = os_strlen(pin);
1106         data.timeout = timeout;
1107         data.added = 0;
1108
1109         if (os_strcmp(uuid, "any") == 0)
1110                 data.uuid = NULL;
1111         else {
1112                 if (uuid_str2bin(uuid, u))
1113                         return -1;
1114                 data.uuid = u;
1115         }
1116         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1117                 return -1;
1118         return data.added ? 0 : -1;
1119 }
1120
1121
1122 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1123 {
1124         const u8 *p2p_dev_addr = ctx;
1125         if (hapd->wps == NULL)
1126                 return 0;
1127         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1128 }
1129
1130
1131 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1132                               const u8 *p2p_dev_addr)
1133 {
1134         return hostapd_wps_for_each(hapd, wps_button_pushed,
1135                                     (void *) p2p_dev_addr);
1136 }
1137
1138
1139 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1140 {
1141         if (hapd->wps == NULL)
1142                 return 0;
1143
1144         wps_registrar_wps_cancel(hapd->wps->registrar);
1145         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1146
1147         return 0;
1148 }
1149
1150
1151 int hostapd_wps_cancel(struct hostapd_data *hapd)
1152 {
1153         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1154 }
1155
1156
1157 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1158                                     const u8 *bssid,
1159                                     const u8 *ie, size_t ie_len,
1160                                     int ssi_signal)
1161 {
1162         struct hostapd_data *hapd = ctx;
1163         struct wpabuf *wps_ie;
1164         struct ieee802_11_elems elems;
1165
1166         if (hapd->wps == NULL)
1167                 return 0;
1168
1169         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1170                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1171                            MACSTR, MAC2STR(addr));
1172                 return 0;
1173         }
1174
1175         if (elems.ssid && elems.ssid_len > 0 &&
1176             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1177              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1178              0))
1179                 return 0; /* Not for us */
1180
1181         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1182         if (wps_ie == NULL)
1183                 return 0;
1184         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1185                 wpabuf_free(wps_ie);
1186                 return 0;
1187         }
1188
1189         if (wpabuf_len(wps_ie) > 0) {
1190                 int p2p_wildcard = 0;
1191 #ifdef CONFIG_P2P
1192                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1193                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1194                               P2P_WILDCARD_SSID_LEN) == 0)
1195                         p2p_wildcard = 1;
1196 #endif /* CONFIG_P2P */
1197                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1198                                            p2p_wildcard);
1199 #ifdef CONFIG_WPS_UPNP
1200                 /* FIX: what exactly should be included in the WLANEvent?
1201                  * WPS attributes? Full ProbeReq frame? */
1202                 if (!p2p_wildcard)
1203                         upnp_wps_device_send_wlan_event(
1204                                 hapd->wps_upnp, addr,
1205                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1206 #endif /* CONFIG_WPS_UPNP */
1207         }
1208
1209         wpabuf_free(wps_ie);
1210
1211         return 0;
1212 }
1213
1214
1215 #ifdef CONFIG_WPS_UPNP
1216
1217 static int hostapd_rx_req_put_wlan_response(
1218         void *priv, enum upnp_wps_wlanevent_type ev_type,
1219         const u8 *mac_addr, const struct wpabuf *msg,
1220         enum wps_msg_type msg_type)
1221 {
1222         struct hostapd_data *hapd = priv;
1223         struct sta_info *sta;
1224         struct upnp_pending_message *p;
1225
1226         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1227                    MACSTR, ev_type, MAC2STR(mac_addr));
1228         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1229                     wpabuf_head(msg), wpabuf_len(msg));
1230         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1231                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1232                            "PutWLANResponse WLANEventType %d", ev_type);
1233                 return -1;
1234         }
1235
1236         /*
1237          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1238          * server implementation for delivery to the peer.
1239          */
1240
1241         sta = ap_get_sta(hapd, mac_addr);
1242 #ifndef CONFIG_WPS_STRICT
1243         if (!sta) {
1244                 /*
1245                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1246                  * Pick STA that is in an ongoing WPS registration without
1247                  * checking the MAC address.
1248                  */
1249                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1250                            "on NewWLANEventMAC; try wildcard match");
1251                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1252                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1253                                 break;
1254                 }
1255         }
1256 #endif /* CONFIG_WPS_STRICT */
1257
1258         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1259                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1260                 return 0;
1261         }
1262
1263         p = os_zalloc(sizeof(*p));
1264         if (p == NULL)
1265                 return -1;
1266         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1267         p->msg = wpabuf_dup(msg);
1268         p->type = msg_type;
1269         p->next = hapd->wps->upnp_msgs;
1270         hapd->wps->upnp_msgs = p;
1271
1272         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1273 }
1274
1275
1276 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1277                                  struct wps_context *wps)
1278 {
1279         struct upnp_wps_device_ctx *ctx;
1280
1281         if (!hapd->conf->upnp_iface)
1282                 return 0;
1283         ctx = os_zalloc(sizeof(*ctx));
1284         if (ctx == NULL)
1285                 return -1;
1286
1287         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1288         if (hapd->conf->ap_pin)
1289                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1290
1291         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1292                                               hapd->conf->upnp_iface);
1293         if (hapd->wps_upnp == NULL)
1294                 return -1;
1295         wps->wps_upnp = hapd->wps_upnp;
1296
1297         return 0;
1298 }
1299
1300
1301 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1302 {
1303         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1304 }
1305
1306 #endif /* CONFIG_WPS_UPNP */
1307
1308
1309 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1310                             char *buf, size_t buflen)
1311 {
1312         if (hapd->wps == NULL)
1313                 return 0;
1314         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1315 }
1316
1317
1318 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1319 {
1320         struct hostapd_data *hapd = eloop_data;
1321         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1322         hostapd_wps_ap_pin_disable(hapd);
1323         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1324 }
1325
1326
1327 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1328 {
1329         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1330         hapd->ap_pin_failures = 0;
1331         hapd->ap_pin_failures_consecutive = 0;
1332         hapd->conf->ap_setup_locked = 0;
1333         if (hapd->wps->ap_setup_locked) {
1334                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1335                 hapd->wps->ap_setup_locked = 0;
1336                 wps_registrar_update_ie(hapd->wps->registrar);
1337         }
1338         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1339         if (timeout > 0)
1340                 eloop_register_timeout(timeout, 0,
1341                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1342 }
1343
1344
1345 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1346 {
1347         os_free(hapd->conf->ap_pin);
1348         hapd->conf->ap_pin = NULL;
1349 #ifdef CONFIG_WPS_UPNP
1350         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1351 #endif /* CONFIG_WPS_UPNP */
1352         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1353         return 0;
1354 }
1355
1356
1357 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1358 {
1359         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1360         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1361 }
1362
1363
1364 struct wps_ap_pin_data {
1365         char pin_txt[9];
1366         int timeout;
1367 };
1368
1369
1370 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1371 {
1372         struct wps_ap_pin_data *data = ctx;
1373         os_free(hapd->conf->ap_pin);
1374         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1375 #ifdef CONFIG_WPS_UPNP
1376         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1377 #endif /* CONFIG_WPS_UPNP */
1378         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1379         return 0;
1380 }
1381
1382
1383 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1384 {
1385         unsigned int pin;
1386         struct wps_ap_pin_data data;
1387
1388         pin = wps_generate_pin();
1389         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1390         data.timeout = timeout;
1391         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1392         return hapd->conf->ap_pin;
1393 }
1394
1395
1396 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1397 {
1398         return hapd->conf->ap_pin;
1399 }
1400
1401
1402 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1403                            int timeout)
1404 {
1405         struct wps_ap_pin_data data;
1406         int ret;
1407
1408         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1409         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1410                 return -1;
1411         data.timeout = timeout;
1412         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1413 }
1414
1415
1416 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1417 {
1418         if (hapd->wps)
1419                 wps_registrar_update_ie(hapd->wps->registrar);
1420         return 0;
1421 }
1422
1423
1424 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1425 {
1426         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1427 }
1428
1429
1430 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1431                           const char *auth, const char *encr, const char *key)
1432 {
1433         struct wps_credential cred;
1434         size_t len;
1435
1436         os_memset(&cred, 0, sizeof(cred));
1437
1438         len = os_strlen(ssid);
1439         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1440             hexstr2bin(ssid, cred.ssid, len / 2))
1441                 return -1;
1442         cred.ssid_len = len / 2;
1443
1444         if (os_strncmp(auth, "OPEN", 4) == 0)
1445                 cred.auth_type = WPS_AUTH_OPEN;
1446         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1447                 cred.auth_type = WPS_AUTH_WPAPSK;
1448         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1449                 cred.auth_type = WPS_AUTH_WPA2PSK;
1450         else
1451                 return -1;
1452
1453         if (encr) {
1454                 if (os_strncmp(encr, "NONE", 4) == 0)
1455                         cred.encr_type = WPS_ENCR_NONE;
1456                 else if (os_strncmp(encr, "WEP", 3) == 0)
1457                         cred.encr_type = WPS_ENCR_WEP;
1458                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1459                         cred.encr_type = WPS_ENCR_TKIP;
1460                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1461                         cred.encr_type = WPS_ENCR_AES;
1462                 else
1463                         return -1;
1464         } else
1465                 cred.encr_type = WPS_ENCR_NONE;
1466
1467         if (key) {
1468                 len = os_strlen(key);
1469                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1470                     hexstr2bin(key, cred.key, len / 2))
1471                         return -1;
1472                 cred.key_len = len / 2;
1473         }
1474
1475         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1476 }
1477
1478
1479 #ifdef CONFIG_WPS_NFC
1480
1481 struct wps_nfc_password_token_data {
1482         const u8 *oob_dev_pw;
1483         size_t oob_dev_pw_len;
1484         int added;
1485 };
1486
1487
1488 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1489 {
1490         struct wps_nfc_password_token_data *data = ctx;
1491         int ret;
1492
1493         if (hapd->wps == NULL)
1494                 return 0;
1495         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1496                                                    data->oob_dev_pw,
1497                                                    data->oob_dev_pw_len);
1498         if (ret == 0)
1499                 data->added++;
1500         return ret;
1501 }
1502
1503
1504 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1505                                               struct wps_parse_attr *attr)
1506 {
1507         struct wps_nfc_password_token_data data;
1508
1509         data.oob_dev_pw = attr->oob_dev_password;
1510         data.oob_dev_pw_len = attr->oob_dev_password_len;
1511         data.added = 0;
1512         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1513                 return -1;
1514         return data.added ? 0 : -1;
1515 }
1516
1517
1518 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1519                                        const struct wpabuf *wps)
1520 {
1521         struct wps_parse_attr attr;
1522
1523         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1524
1525         if (wps_parse_msg(wps, &attr)) {
1526                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1527                 return -1;
1528         }
1529
1530         if (attr.oob_dev_password)
1531                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1532
1533         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1534         return -1;
1535 }
1536
1537
1538 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1539                              const struct wpabuf *data)
1540 {
1541         const struct wpabuf *wps = data;
1542         struct wpabuf *tmp = NULL;
1543         int ret;
1544
1545         if (wpabuf_len(data) < 4)
1546                 return -1;
1547
1548         if (*wpabuf_head_u8(data) != 0x10) {
1549                 /* Assume this contains full NDEF record */
1550                 tmp = ndef_parse_wifi(data);
1551                 if (tmp == NULL) {
1552                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1553                         return -1;
1554                 }
1555                 wps = tmp;
1556         }
1557
1558         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1559         wpabuf_free(tmp);
1560         return ret;
1561 }
1562
1563
1564 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1565                                              int ndef)
1566 {
1567         struct wpabuf *ret;
1568
1569         if (hapd->wps == NULL)
1570                 return NULL;
1571
1572         ret = wps_get_oob_cred(hapd->wps);
1573         if (ndef && ret) {
1574                 struct wpabuf *tmp;
1575                 tmp = ndef_build_wifi(ret);
1576                 wpabuf_free(ret);
1577                 if (tmp == NULL)
1578                         return NULL;
1579                 ret = tmp;
1580         }
1581
1582         return ret;
1583 }
1584
1585
1586 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1587 {
1588         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1589                                  &hapd->conf->wps_nfc_dh_pubkey,
1590                                  &hapd->conf->wps_nfc_dh_privkey,
1591                                  &hapd->conf->wps_nfc_dev_pw);
1592 }
1593
1594
1595 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1596 {
1597         struct wps_context *wps = hapd->wps;
1598
1599         if (wps == NULL)
1600                 return -1;
1601
1602         if (!hapd->conf->wps_nfc_dh_pubkey ||
1603             !hapd->conf->wps_nfc_dh_privkey ||
1604             !hapd->conf->wps_nfc_dev_pw ||
1605             !hapd->conf->wps_nfc_dev_pw_id)
1606                 return -1;
1607
1608         hostapd_wps_nfc_clear(wps);
1609         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1610         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1611         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1612         wps->ap_nfc_dev_pw = wpabuf_dup(hapd->conf->wps_nfc_dev_pw);
1613
1614         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1615             !wps->ap_nfc_dev_pw) {
1616                 hostapd_wps_nfc_clear(wps);
1617                 return -1;
1618         }
1619
1620         return 0;
1621 }
1622
1623
1624 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1625 {
1626         hostapd_wps_nfc_clear(hapd->wps);
1627 }
1628
1629 #endif /* CONFIG_WPS_NFC */