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 "crypto/dh_groups.h"
  15 #include "crypto/dh_group5.h"
  16 #include "common/wpa_ctrl.h"
  17 #include "common/ieee802_11_defs.h"
  18 #include "common/ieee802_11_common.h"
  19 #include "eapol_auth/eapol_auth_sm.h"
  20 #include "eapol_auth/eapol_auth_sm_i.h"
  21 #include "wps/wps.h"
  22 #include "wps/wps_defs.h"
  23 #include "wps/wps_dev_attr.h"
  24 #include "wps/wps_attr_parse.h"
  25 #include "hostapd.h"
  26 #include "ap_config.h"
  27 #include "ap_drv_ops.h"
  28 #include "beacon.h"
  29 #include "sta_info.h"
  30 #include "wps_hostapd.h"
  31
  32
  33 #ifdef CONFIG_WPS_UPNP
  34 #include "wps/wps_upnp.h"
  35 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  36                                  struct wps_context *wps);
  37 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  38 #endif /* CONFIG_WPS_UPNP */
  39
  40 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  41                                     const u8 *bssid,
  42                                     const u8 *ie, size_t ie_len,
  43                                     int ssi_signal);
  44 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  45
  46
  47 struct wps_for_each_data {
  48         int (*func)(struct hostapd_data *h, void *ctx);
  49         void *ctx;
  50 };
  51
  52
  53 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  54 {
  55         struct wps_for_each_data *data = ctx;
  56         size_t j;
  57
  58         if (iface == NULL)
  59                 return 0;
  60         for (j = 0; j < iface->num_bss; j++) {
  61                 struct hostapd_data *hapd = iface->bss[j];
  62                 int ret = data->func(hapd, data->ctx);
  63                 if (ret)
  64                         return ret;
  65         }
  66
  67         return 0;
  68 }
  69
  70
  71 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  72                                 int (*func)(struct hostapd_data *h, void *ctx),
  73                                 void *ctx)
  74 {
  75         struct hostapd_iface *iface = hapd->iface;
  76         struct wps_for_each_data data;
  77         data.func = func;
  78         data.ctx = ctx;
  79         if (iface->interfaces == NULL ||
  80             iface->interfaces->for_each_interface == NULL)
  81                 return wps_for_each(iface, &data);
  82         return iface->interfaces->for_each_interface(iface->interfaces,
  83                                                      wps_for_each, &data);
  84 }
  85
  86
  87 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  88                                   size_t psk_len)
  89 {
  90         struct hostapd_data *hapd = ctx;
  91         struct hostapd_wpa_psk *p;
  92         struct hostapd_ssid *ssid = &hapd->conf->ssid;
  93
  94         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
  95                    MACSTR, MAC2STR(mac_addr));
  96         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
  97
  98         if (psk_len != PMK_LEN) {
  99                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
 100                            (unsigned long) psk_len);
 101                 return -1;
 102         }
 103
 104         /* Add the new PSK to runtime PSK list */
 105         p = os_zalloc(sizeof(*p));
 106         if (p == NULL)
 107                 return -1;
 108         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 109         os_memcpy(p->psk, psk, PMK_LEN);
 110
 111         p->next = ssid->wpa_psk;
 112         ssid->wpa_psk = p;
 113
 114         if (ssid->wpa_psk_file) {
 115                 FILE *f;
 116                 char hex[PMK_LEN * 2 + 1];
 117                 /* Add the new PSK to PSK list file */
 118                 f = fopen(ssid->wpa_psk_file, "a");
 119                 if (f == NULL) {
 120                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 121                                    "'%s'", ssid->wpa_psk_file);
 122                         return -1;
 123                 }
 124
 125                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 126                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 127                 fclose(f);
 128         }
 129
 130         return 0;
 131 }
 132
 133
 134 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 135                                  struct wpabuf *probe_resp_ie)
 136 {
 137         struct hostapd_data *hapd = ctx;
 138         wpabuf_free(hapd->wps_beacon_ie);
 139         hapd->wps_beacon_ie = beacon_ie;
 140         wpabuf_free(hapd->wps_probe_resp_ie);
 141         hapd->wps_probe_resp_ie = probe_resp_ie;
 142         if (hapd->beacon_set_done)
 143                 ieee802_11_set_beacon(hapd);
 144         return hostapd_set_ap_wps_ie(hapd);
 145 }
 146
 147
 148 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 149                                       const struct wps_device_data *dev)
 150 {
 151         struct hostapd_data *hapd = ctx;
 152         char uuid[40], txt[400];
 153         int len;
 154         char devtype[WPS_DEV_TYPE_BUFSIZE];
 155         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 156                 return;
 157         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 158         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 159                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 160                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 161                           dev->manufacturer, dev->model_name,
 162                           dev->model_number, dev->serial_number,
 163                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 164                                                sizeof(devtype)));
 165         if (len > 0 && len < (int) sizeof(txt))
 166                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 167
 168         if (hapd->conf->wps_pin_requests) {
 169                 FILE *f;
 170                 struct os_time t;
 171                 f = fopen(hapd->conf->wps_pin_requests, "a");
 172                 if (f == NULL)
 173                         return;
 174                 os_get_time(&t);
 175                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 176                         "\t%s\n",
 177                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 178                         dev->manufacturer, dev->model_name, dev->model_number,
 179                         dev->serial_number,
 180                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 181                                              sizeof(devtype)));
 182                 fclose(f);
 183         }
 184 }
 185
 186
 187 struct wps_stop_reg_data {
 188         struct hostapd_data *current_hapd;
 189         const u8 *uuid_e;
 190         const u8 *dev_pw;
 191         size_t dev_pw_len;
 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                                        data->dev_pw, data->dev_pw_len);
 200         return 0;
 201 }
 202
 203
 204 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 205                                        const u8 *uuid_e, const u8 *dev_pw,
 206                                        size_t dev_pw_len)
 207 {
 208         struct hostapd_data *hapd = ctx;
 209         char uuid[40];
 210         struct wps_stop_reg_data data;
 211         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 212                 return;
 213         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 214                 MAC2STR(mac_addr), uuid);
 215         if (hapd->wps_reg_success_cb)
 216                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 217                                          mac_addr, uuid_e);
 218         data.current_hapd = hapd;
 219         data.uuid_e = uuid_e;
 220         data.dev_pw = dev_pw;
 221         data.dev_pw_len = dev_pw_len;
 222         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 223 }
 224
 225
 226 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 227                                          const u8 *uuid_e,
 228                                          const u8 *pri_dev_type,
 229                                          u16 config_methods,
 230                                          u16 dev_password_id, u8 request_type,
 231                                          const char *dev_name)
 232 {
 233         struct hostapd_data *hapd = ctx;
 234         char uuid[40];
 235         char devtype[WPS_DEV_TYPE_BUFSIZE];
 236         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 237                 return;
 238         if (dev_name == NULL)
 239                 dev_name = "";
 240         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 241                      " %s %s 0x%x %u %u [%s]",
 242                      MAC2STR(addr), uuid,
 243                      wps_dev_type_bin2str(pri_dev_type, devtype,
 244                                           sizeof(devtype)),
 245                      config_methods, dev_password_id, request_type, dev_name);
 246 }
 247
 248
 249 static int str_starts(const char *str, const char *start)
 250 {
 251         return os_strncmp(str, start, os_strlen(start)) == 0;
 252 }
 253
 254
 255 static void wps_reload_config(void *eloop_data, void *user_ctx)
 256 {
 257         struct hostapd_iface *iface = eloop_data;
 258
 259         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 260         if (iface->interfaces == NULL ||
 261             iface->interfaces->reload_config(iface) < 0) {
 262                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 263                            "configuration");
 264         }
 265 }
 266
 267
 268 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 269                               size_t attr_len)
 270 {
 271         size_t blen = attr_len * 2 + 1;
 272         char *buf = os_malloc(blen);
 273         if (buf) {
 274                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 275                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 276                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 277                 os_free(buf);
 278         }
 279 }
 280
 281
 282 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 283 {
 284         const struct wps_credential *cred = ctx;
 285         FILE *oconf, *nconf;
 286         size_t len, i;
 287         char *tmp_fname;
 288         char buf[1024];
 289         int multi_bss;
 290         int wpa;
 291
 292         if (hapd->wps == NULL)
 293                 return 0;
 294
 295         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 296                         cred->cred_attr, cred->cred_attr_len);
 297
 298         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 299         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 300         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 301                    cred->auth_type);
 302         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 303         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 304         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 305                         cred->key, cred->key_len);
 306         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 307                    MAC2STR(cred->mac_addr));
 308
 309         if ((hapd->conf->wps_cred_processing == 1 ||
 310              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 311                 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
 312         } else if (hapd->conf->wps_cred_processing == 1 ||
 313                    hapd->conf->wps_cred_processing == 2) {
 314                 struct wpabuf *attr;
 315                 attr = wpabuf_alloc(200);
 316                 if (attr && wps_build_credential_wrap(attr, cred) == 0)
 317                         hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
 318                                           wpabuf_len(attr));
 319                 wpabuf_free(attr);
 320         } else
 321                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 322
 323         if (hapd->conf->wps_cred_processing == 1)
 324                 return 0;
 325
 326         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 327         hapd->wps->ssid_len = cred->ssid_len;
 328         hapd->wps->encr_types = cred->encr_type;
 329         hapd->wps->auth_types = cred->auth_type;
 330         if (cred->key_len == 0) {
 331                 os_free(hapd->wps->network_key);
 332                 hapd->wps->network_key = NULL;
 333                 hapd->wps->network_key_len = 0;
 334         } else {
 335                 if (hapd->wps->network_key == NULL ||
 336                     hapd->wps->network_key_len < cred->key_len) {
 337                         hapd->wps->network_key_len = 0;
 338                         os_free(hapd->wps->network_key);
 339                         hapd->wps->network_key = os_malloc(cred->key_len);
 340                         if (hapd->wps->network_key == NULL)
 341                                 return -1;
 342                 }
 343                 hapd->wps->network_key_len = cred->key_len;
 344                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 345         }
 346         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 347
 348         if (hapd->iface->config_fname == NULL)
 349                 return 0;
 350         len = os_strlen(hapd->iface->config_fname) + 5;
 351         tmp_fname = os_malloc(len);
 352         if (tmp_fname == NULL)
 353                 return -1;
 354         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 355
 356         oconf = fopen(hapd->iface->config_fname, "r");
 357         if (oconf == NULL) {
 358                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 359                            "configuration file");
 360                 os_free(tmp_fname);
 361                 return -1;
 362         }
 363
 364         nconf = fopen(tmp_fname, "w");
 365         if (nconf == NULL) {
 366                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 367                            "configuration file");
 368                 os_free(tmp_fname);
 369                 fclose(oconf);
 370                 return -1;
 371         }
 372
 373         fprintf(nconf, "# WPS configuration - START\n");
 374
 375         fprintf(nconf, "wps_state=2\n");
 376
 377         if (is_hex(cred->ssid, cred->ssid_len)) {
 378                 fprintf(nconf, "ssid2=");
 379                 for (i = 0; i < cred->ssid_len; i++)
 380                         fprintf(nconf, "%02x", cred->ssid[i]);
 381                 fprintf(nconf, "\n");
 382         } else {
 383                 fprintf(nconf, "ssid=");
 384                 for (i = 0; i < cred->ssid_len; i++)
 385                         fputc(cred->ssid[i], nconf);
 386                 fprintf(nconf, "\n");
 387         }
 388
 389         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 390             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 391                 wpa = 3;
 392         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 393                 wpa = 2;
 394         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 395                 wpa = 1;
 396         else
 397                 wpa = 0;
 398
 399         if (wpa) {
 400                 char *prefix;
 401                 fprintf(nconf, "wpa=%d\n", wpa);
 402
 403                 fprintf(nconf, "wpa_key_mgmt=");
 404                 prefix = "";
 405                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 406                         fprintf(nconf, "WPA-EAP");
 407                         prefix = " ";
 408                 }
 409                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 410                         fprintf(nconf, "%sWPA-PSK", prefix);
 411                 fprintf(nconf, "\n");
 412
 413                 fprintf(nconf, "wpa_pairwise=");
 414                 prefix = "";
 415                 if (cred->encr_type & WPS_ENCR_AES) {
 416                         fprintf(nconf, "CCMP");
 417                         prefix = " ";
 418                 }
 419                 if (cred->encr_type & WPS_ENCR_TKIP) {
 420                         fprintf(nconf, "%sTKIP", prefix);
 421                 }
 422                 fprintf(nconf, "\n");
 423
 424                 if (cred->key_len >= 8 && cred->key_len < 64) {
 425                         fprintf(nconf, "wpa_passphrase=");
 426                         for (i = 0; i < cred->key_len; i++)
 427                                 fputc(cred->key[i], nconf);
 428                         fprintf(nconf, "\n");
 429                 } else if (cred->key_len == 64) {
 430                         fprintf(nconf, "wpa_psk=");
 431                         for (i = 0; i < cred->key_len; i++)
 432                                 fputc(cred->key[i], nconf);
 433                         fprintf(nconf, "\n");
 434                 } else {
 435                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 436                                    "for WPA/WPA2",
 437                                    (unsigned long) cred->key_len);
 438                 }
 439
 440                 fprintf(nconf, "auth_algs=1\n");
 441         } else {
 442                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 443                     (cred->auth_type & WPS_AUTH_SHARED))
 444                         fprintf(nconf, "auth_algs=3\n");
 445                 else if (cred->auth_type & WPS_AUTH_SHARED)
 446                         fprintf(nconf, "auth_algs=2\n");
 447                 else
 448                         fprintf(nconf, "auth_algs=1\n");
 449
 450                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 451                         int key_idx = cred->key_idx;
 452                         if (key_idx)
 453                                 key_idx--;
 454                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 455                         fprintf(nconf, "wep_key%d=", key_idx);
 456                         if (cred->key_len == 10 || cred->key_len == 26) {
 457                                 /* WEP key as a hex string */
 458                                 for (i = 0; i < cred->key_len; i++)
 459                                         fputc(cred->key[i], nconf);
 460                         } else {
 461                                 /* Raw WEP key; convert to hex */
 462                                 for (i = 0; i < cred->key_len; i++)
 463                                         fprintf(nconf, "%02x", cred->key[i]);
 464                         }
 465                         fprintf(nconf, "\n");
 466                 }
 467         }
 468
 469         fprintf(nconf, "# WPS configuration - END\n");
 470
 471         multi_bss = 0;
 472         while (fgets(buf, sizeof(buf), oconf)) {
 473                 if (os_strncmp(buf, "bss=", 4) == 0)
 474                         multi_bss = 1;
 475                 if (!multi_bss &&
 476                     (str_starts(buf, "ssid=") ||
 477                      str_starts(buf, "ssid2=") ||
 478                      str_starts(buf, "auth_algs=") ||
 479                      str_starts(buf, "wep_default_key=") ||
 480                      str_starts(buf, "wep_key") ||
 481                      str_starts(buf, "wps_state=") ||
 482                      str_starts(buf, "wpa=") ||
 483                      str_starts(buf, "wpa_psk=") ||
 484                      str_starts(buf, "wpa_pairwise=") ||
 485                      str_starts(buf, "rsn_pairwise=") ||
 486                      str_starts(buf, "wpa_key_mgmt=") ||
 487                      str_starts(buf, "wpa_passphrase="))) {
 488                         fprintf(nconf, "#WPS# %s", buf);
 489                 } else
 490                         fprintf(nconf, "%s", buf);
 491         }
 492
 493         fclose(nconf);
 494         fclose(oconf);
 495
 496         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 497                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 498                            "configuration file: %s", strerror(errno));
 499                 os_free(tmp_fname);
 500                 return -1;
 501         }
 502
 503         os_free(tmp_fname);
 504
 505         /* Schedule configuration reload after short period of time to allow
 506          * EAP-WSC to be finished.
 507          */
 508         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 509                                NULL);
 510
 511         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 512
 513         return 0;
 514 }
 515
 516
 517 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 518 {
 519         struct hostapd_data *hapd = ctx;
 520         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 521 }
 522
 523
 524 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 525 {
 526         struct hostapd_data *hapd = eloop_data;
 527
 528         if (hapd->conf->ap_setup_locked)
 529                 return;
 530         if (hapd->ap_pin_failures_consecutive >= 10)
 531                 return;
 532
 533         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 534         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 535         hapd->wps->ap_setup_locked = 0;
 536         wps_registrar_update_ie(hapd->wps->registrar);
 537 }
 538
 539
 540 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 541 {
 542         struct wps_event_pwd_auth_fail *data = ctx;
 543
 544         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 545                 return 0;
 546
 547         /*
 548          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 549          * for some time if this happens multiple times to slow down brute
 550          * force attacks.
 551          */
 552         hapd->ap_pin_failures++;
 553         hapd->ap_pin_failures_consecutive++;
 554         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 555                    "(%u consecutive)",
 556                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 557         if (hapd->ap_pin_failures < 3)
 558                 return 0;
 559
 560         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 561         hapd->wps->ap_setup_locked = 1;
 562
 563         wps_registrar_update_ie(hapd->wps->registrar);
 564
 565         if (!hapd->conf->ap_setup_locked &&
 566             hapd->ap_pin_failures_consecutive >= 10) {
 567                 /*
 568                  * In indefinite lockdown - disable automatic AP PIN
 569                  * reenablement.
 570                  */
 571                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 572                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 573         } else if (!hapd->conf->ap_setup_locked) {
 574                 if (hapd->ap_pin_lockout_time == 0)
 575                         hapd->ap_pin_lockout_time = 60;
 576                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 577                          (hapd->ap_pin_failures % 3) == 0)
 578                         hapd->ap_pin_lockout_time *= 2;
 579
 580                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 581                            hapd->ap_pin_lockout_time);
 582                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 583                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 584                                        hostapd_wps_reenable_ap_pin, hapd,
 585                                        NULL);
 586         }
 587
 588         return 0;
 589 }
 590
 591
 592 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 593                                   struct wps_event_pwd_auth_fail *data)
 594 {
 595         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 596 }
 597
 598
 599 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 600 {
 601         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 602                 return 0;
 603
 604         if (hapd->ap_pin_failures_consecutive == 0)
 605                 return 0;
 606
 607         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 608                    "- total validation failures %u (%u consecutive)",
 609                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 610         hapd->ap_pin_failures_consecutive = 0;
 611
 612         return 0;
 613 }
 614
 615
 616 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 617 {
 618         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 619 }
 620
 621
 622 static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = {
 623         "No Error", /* WPS_EI_NO_ERROR */
 624         "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */
 625         "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */
 626 };
 627
 628 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 629                                    struct wps_event_fail *fail)
 630 {
 631         if (fail->error_indication > 0 &&
 632             fail->error_indication < NUM_WPS_EI_VALUES) {
 633                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 634                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 635                         fail->msg, fail->config_error, fail->error_indication,
 636                         wps_event_fail_reason[fail->error_indication]);
 637         } else {
 638                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 639                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 640                         fail->msg, fail->config_error);
 641         }
 642 }
 643
 644
 645 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 646                                  union wps_event_data *data)
 647 {
 648         struct hostapd_data *hapd = ctx;
 649
 650         switch (event) {
 651         case WPS_EV_M2D:
 652                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 653                 break;
 654         case WPS_EV_FAIL:
 655                 hostapd_wps_event_fail(hapd, &data->fail);
 656                 break;
 657         case WPS_EV_SUCCESS:
 658                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 659                 break;
 660         case WPS_EV_PWD_AUTH_FAIL:
 661                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 662                 break;
 663         case WPS_EV_PBC_OVERLAP:
 664                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 665                 break;
 666         case WPS_EV_PBC_TIMEOUT:
 667                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 668                 break;
 669         case WPS_EV_ER_AP_ADD:
 670                 break;
 671         case WPS_EV_ER_AP_REMOVE:
 672                 break;
 673         case WPS_EV_ER_ENROLLEE_ADD:
 674                 break;
 675         case WPS_EV_ER_ENROLLEE_REMOVE:
 676                 break;
 677         case WPS_EV_ER_AP_SETTINGS:
 678                 break;
 679         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 680                 break;
 681         case WPS_EV_AP_PIN_SUCCESS:
 682                 hostapd_wps_ap_pin_success(hapd);
 683                 break;
 684         }
 685         if (hapd->wps_event_cb)
 686                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 687 }
 688
 689
 690 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 691 {
 692         wpabuf_free(hapd->wps_beacon_ie);
 693         hapd->wps_beacon_ie = NULL;
 694
 695         wpabuf_free(hapd->wps_probe_resp_ie);
 696         hapd->wps_probe_resp_ie = NULL;
 697
 698         hostapd_set_ap_wps_ie(hapd);
 699 }
 700
 701
 702 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 703 {
 704         const u8 **uuid = ctx;
 705         size_t j;
 706
 707         if (iface == NULL)
 708                 return 0;
 709         for (j = 0; j < iface->num_bss; j++) {
 710                 struct hostapd_data *hapd = iface->bss[j];
 711                 if (hapd->wps && !is_nil_uuid(hapd->wps->uuid)) {
 712                         *uuid = hapd->wps->uuid;
 713                         return 1;
 714                 }
 715         }
 716
 717         return 0;
 718 }
 719
 720
 721 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 722 {
 723         const u8 *uuid;
 724         if (iface->interfaces == NULL ||
 725             iface->interfaces->for_each_interface == NULL)
 726                 return NULL;
 727         uuid = NULL;
 728         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 729                                               &uuid);
 730         return uuid;
 731 }
 732
 733
 734 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 735 {
 736         int *count= ctx;
 737         (*count)++;
 738         return 0;
 739 }
 740
 741
 742 static int interface_count(struct hostapd_iface *iface)
 743 {
 744         int count = 0;
 745         if (iface->interfaces == NULL ||
 746             iface->interfaces->for_each_interface == NULL)
 747                 return 0;
 748         iface->interfaces->for_each_interface(iface->interfaces,
 749                                               count_interface_cb, &count);
 750         return count;
 751 }
 752
 753
 754 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 755                                       struct wps_context *wps)
 756 {
 757         int i;
 758
 759         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 760                 wpabuf_free(wps->dev.vendor_ext[i]);
 761                 wps->dev.vendor_ext[i] = NULL;
 762
 763                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 764                         continue;
 765
 766                 wps->dev.vendor_ext[i] =
 767                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 768                 if (wps->dev.vendor_ext[i] == NULL) {
 769                         while (--i >= 0)
 770                                 wpabuf_free(wps->dev.vendor_ext[i]);
 771                         return -1;
 772                 }
 773         }
 774
 775         return 0;
 776 }
 777
 778
 779 int hostapd_init_wps(struct hostapd_data *hapd,
 780                      struct hostapd_bss_config *conf)
 781 {
 782         struct wps_context *wps;
 783         struct wps_registrar_config cfg;
 784
 785         if (conf->wps_state == 0) {
 786                 hostapd_wps_clear_ies(hapd);
 787                 return 0;
 788         }
 789
 790         wps = os_zalloc(sizeof(*wps));
 791         if (wps == NULL)
 792                 return -1;
 793
 794         wps->cred_cb = hostapd_wps_cred_cb;
 795         wps->event_cb = hostapd_wps_event_cb;
 796         wps->cb_ctx = hapd;
 797
 798         os_memset(&cfg, 0, sizeof(cfg));
 799         wps->wps_state = hapd->conf->wps_state;
 800         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 801         if (is_nil_uuid(hapd->conf->uuid)) {
 802                 const u8 *uuid;
 803                 uuid = get_own_uuid(hapd->iface);
 804                 if (uuid) {
 805                         os_memcpy(wps->uuid, uuid, UUID_LEN);
 806                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
 807                                     "interface", wps->uuid, UUID_LEN);
 808                 } else {
 809                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 810                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
 811                                     "address", wps->uuid, UUID_LEN);
 812                 }
 813         } else {
 814                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 815                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
 816                             wps->uuid, UUID_LEN);
 817         }
 818         wps->ssid_len = hapd->conf->ssid.ssid_len;
 819         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 820         wps->ap = 1;
 821         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 822         wps->dev.device_name = hapd->conf->device_name ?
 823                 os_strdup(hapd->conf->device_name) : NULL;
 824         wps->dev.manufacturer = hapd->conf->manufacturer ?
 825                 os_strdup(hapd->conf->manufacturer) : NULL;
 826         wps->dev.model_name = hapd->conf->model_name ?
 827                 os_strdup(hapd->conf->model_name) : NULL;
 828         wps->dev.model_number = hapd->conf->model_number ?
 829                 os_strdup(hapd->conf->model_number) : NULL;
 830         wps->dev.serial_number = hapd->conf->serial_number ?
 831                 os_strdup(hapd->conf->serial_number) : NULL;
 832         wps->config_methods =
 833                 wps_config_methods_str2bin(hapd->conf->config_methods);
 834 #ifdef CONFIG_WPS2
 835         if ((wps->config_methods &
 836              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 837               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
 838                 wpa_printf(MSG_INFO, "WPS: Converting display to "
 839                            "virtual_display for WPS 2.0 compliance");
 840                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
 841         }
 842         if ((wps->config_methods &
 843              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
 844               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
 845                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
 846                            "virtual_push_button for WPS 2.0 compliance");
 847                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
 848         }
 849 #endif /* CONFIG_WPS2 */
 850         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
 851                   WPS_DEV_TYPE_LEN);
 852
 853         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
 854                 os_free(wps);
 855                 return -1;
 856         }
 857
 858         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 859
 860         if (conf->wps_rf_bands) {
 861                 wps->dev.rf_bands = conf->wps_rf_bands;
 862         } else {
 863                 wps->dev.rf_bands =
 864                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 865                         WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 866         }
 867
 868         if (conf->wpa & WPA_PROTO_RSN) {
 869                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 870                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 871                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 872                         wps->auth_types |= WPS_AUTH_WPA2;
 873
 874                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 875                         wps->encr_types |= WPS_ENCR_AES;
 876                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 877                         wps->encr_types |= WPS_ENCR_TKIP;
 878         }
 879
 880         if (conf->wpa & WPA_PROTO_WPA) {
 881                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 882                         wps->auth_types |= WPS_AUTH_WPAPSK;
 883                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 884                         wps->auth_types |= WPS_AUTH_WPA;
 885
 886                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
 887                         wps->encr_types |= WPS_ENCR_AES;
 888                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
 889                         wps->encr_types |= WPS_ENCR_TKIP;
 890         }
 891
 892         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
 893                 wps->encr_types |= WPS_ENCR_NONE;
 894                 wps->auth_types |= WPS_AUTH_OPEN;
 895         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
 896                 wps->encr_types |= WPS_ENCR_WEP;
 897                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
 898                         wps->auth_types |= WPS_AUTH_OPEN;
 899                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
 900                         wps->auth_types |= WPS_AUTH_SHARED;
 901         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
 902                 wps->auth_types |= WPS_AUTH_OPEN;
 903                 if (conf->default_wep_key_len)
 904                         wps->encr_types |= WPS_ENCR_WEP;
 905                 else
 906                         wps->encr_types |= WPS_ENCR_NONE;
 907         }
 908
 909         if (conf->ssid.wpa_psk_file) {
 910                 /* Use per-device PSKs */
 911         } else if (conf->ssid.wpa_passphrase) {
 912                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
 913                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
 914         } else if (conf->ssid.wpa_psk) {
 915                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
 916                 if (wps->network_key == NULL) {
 917                         os_free(wps);
 918                         return -1;
 919                 }
 920                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
 921                                  conf->ssid.wpa_psk->psk, PMK_LEN);
 922                 wps->network_key_len = 2 * PMK_LEN;
 923         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
 924                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
 925                 if (wps->network_key == NULL) {
 926                         os_free(wps);
 927                         return -1;
 928                 }
 929                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
 930                           conf->ssid.wep.len[0]);
 931                 wps->network_key_len = conf->ssid.wep.len[0];
 932         }
 933
 934         if (conf->ssid.wpa_psk) {
 935                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
 936                 wps->psk_set = 1;
 937         }
 938
 939         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
 940                 /* Override parameters to enable security by default */
 941                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
 942                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
 943         }
 944
 945         wps->ap_settings = conf->ap_settings;
 946         wps->ap_settings_len = conf->ap_settings_len;
 947
 948         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
 949         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
 950         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
 951         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
 952         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
 953         cfg.cb_ctx = hapd;
 954         cfg.skip_cred_build = conf->skip_cred_build;
 955         cfg.extra_cred = conf->extra_cred;
 956         cfg.extra_cred_len = conf->extra_cred_len;
 957         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
 958                 conf->skip_cred_build;
 959         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
 960                 cfg.static_wep_only = 1;
 961         cfg.dualband = interface_count(hapd->iface) > 1;
 962         if (cfg.dualband)
 963                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
 964
 965         wps->registrar = wps_registrar_init(wps, &cfg);
 966         if (wps->registrar == NULL) {
 967                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
 968                 os_free(wps->network_key);
 969                 os_free(wps);
 970                 return -1;
 971         }
 972
 973 #ifdef CONFIG_WPS_UPNP
 974         wps->friendly_name = hapd->conf->friendly_name;
 975         wps->manufacturer_url = hapd->conf->manufacturer_url;
 976         wps->model_description = hapd->conf->model_description;
 977         wps->model_url = hapd->conf->model_url;
 978         wps->upc = hapd->conf->upc;
 979 #endif /* CONFIG_WPS_UPNP */
 980
 981         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 982
 983         hapd->wps = wps;
 984
 985         return 0;
 986 }
 987
 988
 989 int hostapd_init_wps_complete(struct hostapd_data *hapd)
 990 {
 991         struct wps_context *wps = hapd->wps;
 992
 993         if (wps == NULL)
 994                 return 0;
 995
 996 #ifdef CONFIG_WPS_UPNP
 997         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 998                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 999                 wps_registrar_deinit(wps->registrar);
1000                 os_free(wps->network_key);
1001                 os_free(wps);
1002                 hapd->wps = NULL;
1003                 return -1;
1004         }
1005 #endif /* CONFIG_WPS_UPNP */
1006
1007         return 0;
1008 }
1009
1010
1011 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1012 {
1013 #ifdef CONFIG_WPS_NFC
1014         wps->ap_nfc_dev_pw_id = 0;
1015         wpabuf_free(wps->ap_nfc_dh_pubkey);
1016         wps->ap_nfc_dh_pubkey = NULL;
1017         wpabuf_free(wps->ap_nfc_dh_privkey);
1018         wps->ap_nfc_dh_privkey = NULL;
1019         wpabuf_free(wps->ap_nfc_dev_pw);
1020         wps->ap_nfc_dev_pw = NULL;
1021 #endif /* CONFIG_WPS_NFC */
1022 }
1023
1024
1025 void hostapd_deinit_wps(struct hostapd_data *hapd)
1026 {
1027         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1028         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1029         if (hapd->wps == NULL)
1030                 return;
1031 #ifdef CONFIG_WPS_UPNP
1032         hostapd_wps_upnp_deinit(hapd);
1033 #endif /* CONFIG_WPS_UPNP */
1034         wps_registrar_deinit(hapd->wps->registrar);
1035         os_free(hapd->wps->network_key);
1036         wps_device_data_free(&hapd->wps->dev);
1037         wpabuf_free(hapd->wps->dh_pubkey);
1038         wpabuf_free(hapd->wps->dh_privkey);
1039         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
1040         wpabuf_free(hapd->wps->oob_conf.dev_password);
1041         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1042         hostapd_wps_nfc_clear(hapd->wps);
1043         os_free(hapd->wps);
1044         hapd->wps = NULL;
1045         hostapd_wps_clear_ies(hapd);
1046 }
1047
1048
1049 void hostapd_update_wps(struct hostapd_data *hapd)
1050 {
1051         if (hapd->wps == NULL)
1052                 return;
1053
1054 #ifdef CONFIG_WPS_UPNP
1055         hapd->wps->friendly_name = hapd->conf->friendly_name;
1056         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1057         hapd->wps->model_description = hapd->conf->model_description;
1058         hapd->wps->model_url = hapd->conf->model_url;
1059         hapd->wps->upc = hapd->conf->upc;
1060 #endif /* CONFIG_WPS_UPNP */
1061
1062         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1063
1064         if (hapd->conf->wps_state)
1065                 wps_registrar_update_ie(hapd->wps->registrar);
1066         else
1067                 hostapd_deinit_wps(hapd);
1068 }
1069
1070
1071 struct wps_add_pin_data {
1072         const u8 *addr;
1073         const u8 *uuid;
1074         const u8 *pin;
1075         size_t pin_len;
1076         int timeout;
1077         int added;
1078 };
1079
1080
1081 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1082 {
1083         struct wps_add_pin_data *data = ctx;
1084         int ret;
1085
1086         if (hapd->wps == NULL)
1087                 return 0;
1088         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1089                                     data->uuid, data->pin, data->pin_len,
1090                                     data->timeout);
1091         if (ret == 0)
1092                 data->added++;
1093         return ret;
1094 }
1095
1096
1097 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1098                         const char *uuid, const char *pin, int timeout)
1099 {
1100         u8 u[UUID_LEN];
1101         struct wps_add_pin_data data;
1102
1103         data.addr = addr;
1104         data.uuid = u;
1105         data.pin = (const u8 *) pin;
1106         data.pin_len = os_strlen(pin);
1107         data.timeout = timeout;
1108         data.added = 0;
1109
1110         if (os_strcmp(uuid, "any") == 0)
1111                 data.uuid = NULL;
1112         else {
1113                 if (uuid_str2bin(uuid, u))
1114                         return -1;
1115                 data.uuid = u;
1116         }
1117         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1118                 return -1;
1119         return data.added ? 0 : -1;
1120 }
1121
1122
1123 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1124 {
1125         const u8 *p2p_dev_addr = ctx;
1126         if (hapd->wps == NULL)
1127                 return 0;
1128         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1129 }
1130
1131
1132 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1133                               const u8 *p2p_dev_addr)
1134 {
1135         return hostapd_wps_for_each(hapd, wps_button_pushed,
1136                                     (void *) p2p_dev_addr);
1137 }
1138
1139
1140 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1141 {
1142         if (hapd->wps == NULL)
1143                 return 0;
1144
1145         wps_registrar_wps_cancel(hapd->wps->registrar);
1146         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1147
1148         return 0;
1149 }
1150
1151
1152 int hostapd_wps_cancel(struct hostapd_data *hapd)
1153 {
1154         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1155 }
1156
1157
1158 #ifdef CONFIG_WPS_OOB
1159 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
1160                           char *path, char *method)
1161 {
1162         struct wps_context *wps = hapd->wps;
1163         struct oob_device_data *oob_dev;
1164
1165         oob_dev = wps_get_oob_device(device_type);
1166         if (oob_dev == NULL)
1167                 return -1;
1168         oob_dev->device_path = path;
1169         wps->oob_conf.oob_method = wps_get_oob_method(method);
1170
1171         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
1172                 /*
1173                  * Use pre-configured DH keys in order to be able to write the
1174                  * key hash into the OOB file.
1175                  */
1176                 wpabuf_free(wps->dh_pubkey);
1177                 wpabuf_free(wps->dh_privkey);
1178                 wps->dh_privkey = NULL;
1179                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
1180                                          &wps->dh_privkey);
1181                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1182                 if (wps->dh_pubkey == NULL) {
1183                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1184                                    "Diffie-Hellman handshake");
1185                         return -1;
1186                 }
1187         }
1188
1189         if (wps_process_oob(wps, oob_dev, 1) < 0)
1190                 goto error;
1191
1192         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1193              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1194             hostapd_wps_add_pin(hapd, NULL, "any",
1195                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
1196             0)
1197                 goto error;
1198
1199         return 0;
1200
1201 error:
1202         wpabuf_free(wps->dh_pubkey);
1203         wps->dh_pubkey = NULL;
1204         wpabuf_free(wps->dh_privkey);
1205         wps->dh_privkey = NULL;
1206         return -1;
1207 }
1208 #endif /* CONFIG_WPS_OOB */
1209
1210
1211 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1212                                     const u8 *bssid,
1213                                     const u8 *ie, size_t ie_len,
1214                                     int ssi_signal)
1215 {
1216         struct hostapd_data *hapd = ctx;
1217         struct wpabuf *wps_ie;
1218         struct ieee802_11_elems elems;
1219
1220         if (hapd->wps == NULL)
1221                 return 0;
1222
1223         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1224                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1225                            MACSTR, MAC2STR(addr));
1226                 return 0;
1227         }
1228
1229         if (elems.ssid && elems.ssid_len > 0 &&
1230             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1231              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1232              0))
1233                 return 0; /* Not for us */
1234
1235         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1236         if (wps_ie == NULL)
1237                 return 0;
1238         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1239                 wpabuf_free(wps_ie);
1240                 return 0;
1241         }
1242
1243         if (wpabuf_len(wps_ie) > 0) {
1244                 int p2p_wildcard = 0;
1245 #ifdef CONFIG_P2P
1246                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1247                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1248                               P2P_WILDCARD_SSID_LEN) == 0)
1249                         p2p_wildcard = 1;
1250 #endif /* CONFIG_P2P */
1251                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1252                                            p2p_wildcard);
1253 #ifdef CONFIG_WPS_UPNP
1254                 /* FIX: what exactly should be included in the WLANEvent?
1255                  * WPS attributes? Full ProbeReq frame? */
1256                 if (!p2p_wildcard)
1257                         upnp_wps_device_send_wlan_event(
1258                                 hapd->wps_upnp, addr,
1259                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1260 #endif /* CONFIG_WPS_UPNP */
1261         }
1262
1263         wpabuf_free(wps_ie);
1264
1265         return 0;
1266 }
1267
1268
1269 #ifdef CONFIG_WPS_UPNP
1270
1271 static int hostapd_rx_req_put_wlan_response(
1272         void *priv, enum upnp_wps_wlanevent_type ev_type,
1273         const u8 *mac_addr, const struct wpabuf *msg,
1274         enum wps_msg_type msg_type)
1275 {
1276         struct hostapd_data *hapd = priv;
1277         struct sta_info *sta;
1278         struct upnp_pending_message *p;
1279
1280         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1281                    MACSTR, ev_type, MAC2STR(mac_addr));
1282         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1283                     wpabuf_head(msg), wpabuf_len(msg));
1284         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1285                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1286                            "PutWLANResponse WLANEventType %d", ev_type);
1287                 return -1;
1288         }
1289
1290         /*
1291          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1292          * server implementation for delivery to the peer.
1293          */
1294
1295         sta = ap_get_sta(hapd, mac_addr);
1296 #ifndef CONFIG_WPS_STRICT
1297         if (!sta) {
1298                 /*
1299                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1300                  * Pick STA that is in an ongoing WPS registration without
1301                  * checking the MAC address.
1302                  */
1303                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1304                            "on NewWLANEventMAC; try wildcard match");
1305                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1306                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1307                                 break;
1308                 }
1309         }
1310 #endif /* CONFIG_WPS_STRICT */
1311
1312         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1313                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1314                 return 0;
1315         }
1316
1317         p = os_zalloc(sizeof(*p));
1318         if (p == NULL)
1319                 return -1;
1320         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1321         p->msg = wpabuf_dup(msg);
1322         p->type = msg_type;
1323         p->next = hapd->wps->upnp_msgs;
1324         hapd->wps->upnp_msgs = p;
1325
1326         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1327 }
1328
1329
1330 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1331                                  struct wps_context *wps)
1332 {
1333         struct upnp_wps_device_ctx *ctx;
1334
1335         if (!hapd->conf->upnp_iface)
1336                 return 0;
1337         ctx = os_zalloc(sizeof(*ctx));
1338         if (ctx == NULL)
1339                 return -1;
1340
1341         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1342         if (hapd->conf->ap_pin)
1343                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1344
1345         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1346                                               hapd->conf->upnp_iface);
1347         if (hapd->wps_upnp == NULL)
1348                 return -1;
1349         wps->wps_upnp = hapd->wps_upnp;
1350
1351         return 0;
1352 }
1353
1354
1355 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1356 {
1357         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1358 }
1359
1360 #endif /* CONFIG_WPS_UPNP */
1361
1362
1363 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1364                             char *buf, size_t buflen)
1365 {
1366         if (hapd->wps == NULL)
1367                 return 0;
1368         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1369 }
1370
1371
1372 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1373 {
1374         struct hostapd_data *hapd = eloop_data;
1375         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1376         hostapd_wps_ap_pin_disable(hapd);
1377         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1378 }
1379
1380
1381 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1382 {
1383         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1384         hapd->ap_pin_failures = 0;
1385         hapd->ap_pin_failures_consecutive = 0;
1386         hapd->conf->ap_setup_locked = 0;
1387         if (hapd->wps->ap_setup_locked) {
1388                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1389                 hapd->wps->ap_setup_locked = 0;
1390                 wps_registrar_update_ie(hapd->wps->registrar);
1391         }
1392         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1393         if (timeout > 0)
1394                 eloop_register_timeout(timeout, 0,
1395                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1396 }
1397
1398
1399 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1400 {
1401         os_free(hapd->conf->ap_pin);
1402         hapd->conf->ap_pin = NULL;
1403 #ifdef CONFIG_WPS_UPNP
1404         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1405 #endif /* CONFIG_WPS_UPNP */
1406         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1407         return 0;
1408 }
1409
1410
1411 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1412 {
1413         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1414         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1415 }
1416
1417
1418 struct wps_ap_pin_data {
1419         char pin_txt[9];
1420         int timeout;
1421 };
1422
1423
1424 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1425 {
1426         struct wps_ap_pin_data *data = ctx;
1427         os_free(hapd->conf->ap_pin);
1428         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1429 #ifdef CONFIG_WPS_UPNP
1430         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1431 #endif /* CONFIG_WPS_UPNP */
1432         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1433         return 0;
1434 }
1435
1436
1437 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1438 {
1439         unsigned int pin;
1440         struct wps_ap_pin_data data;
1441
1442         pin = wps_generate_pin();
1443         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1444         data.timeout = timeout;
1445         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1446         return hapd->conf->ap_pin;
1447 }
1448
1449
1450 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1451 {
1452         return hapd->conf->ap_pin;
1453 }
1454
1455
1456 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1457                            int timeout)
1458 {
1459         struct wps_ap_pin_data data;
1460         int ret;
1461
1462         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1463         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1464                 return -1;
1465         data.timeout = timeout;
1466         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1467 }
1468
1469
1470 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1471 {
1472         if (hapd->wps)
1473                 wps_registrar_update_ie(hapd->wps->registrar);
1474         return 0;
1475 }
1476
1477
1478 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1479 {
1480         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1481 }
1482
1483
1484 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1485                           const char *auth, const char *encr, const char *key)
1486 {
1487         struct wps_credential cred;
1488         size_t len;
1489
1490         os_memset(&cred, 0, sizeof(cred));
1491
1492         len = os_strlen(ssid);
1493         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1494             hexstr2bin(ssid, cred.ssid, len / 2))
1495                 return -1;
1496         cred.ssid_len = len / 2;
1497
1498         if (os_strncmp(auth, "OPEN", 4) == 0)
1499                 cred.auth_type = WPS_AUTH_OPEN;
1500         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1501                 cred.auth_type = WPS_AUTH_WPAPSK;
1502         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1503                 cred.auth_type = WPS_AUTH_WPA2PSK;
1504         else
1505                 return -1;
1506
1507         if (encr) {
1508                 if (os_strncmp(encr, "NONE", 4) == 0)
1509                         cred.encr_type = WPS_ENCR_NONE;
1510                 else if (os_strncmp(encr, "WEP", 3) == 0)
1511                         cred.encr_type = WPS_ENCR_WEP;
1512                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1513                         cred.encr_type = WPS_ENCR_TKIP;
1514                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1515                         cred.encr_type = WPS_ENCR_AES;
1516                 else
1517                         return -1;
1518         } else
1519                 cred.encr_type = WPS_ENCR_NONE;
1520
1521         if (key) {
1522                 len = os_strlen(key);
1523                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1524                     hexstr2bin(key, cred.key, len / 2))
1525                         return -1;
1526                 cred.key_len = len / 2;
1527         }
1528
1529         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1530 }
1531
1532
1533 #ifdef CONFIG_WPS_NFC
1534
1535 struct wps_nfc_password_token_data {
1536         const u8 *oob_dev_pw;
1537         size_t oob_dev_pw_len;
1538         int added;
1539 };
1540
1541
1542 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1543 {
1544         struct wps_nfc_password_token_data *data = ctx;
1545         int ret;
1546
1547         if (hapd->wps == NULL)
1548                 return 0;
1549         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1550                                                    data->oob_dev_pw,
1551                                                    data->oob_dev_pw_len);
1552         if (ret == 0)
1553                 data->added++;
1554         return ret;
1555 }
1556
1557
1558 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1559                                               struct wps_parse_attr *attr)
1560 {
1561         struct wps_nfc_password_token_data data;
1562
1563         data.oob_dev_pw = attr->oob_dev_password;
1564         data.oob_dev_pw_len = attr->oob_dev_password_len;
1565         data.added = 0;
1566         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1567                 return -1;
1568         return data.added ? 0 : -1;
1569 }
1570
1571
1572 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1573                                        const struct wpabuf *wps)
1574 {
1575         struct wps_parse_attr attr;
1576
1577         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1578
1579         if (wps_parse_msg(wps, &attr)) {
1580                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1581                 return -1;
1582         }
1583
1584         if (attr.oob_dev_password)
1585                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1586
1587         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1588         return -1;
1589 }
1590
1591
1592 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1593                              const struct wpabuf *data)
1594 {
1595         const struct wpabuf *wps = data;
1596         struct wpabuf *tmp = NULL;
1597         int ret;
1598
1599         if (wpabuf_len(data) < 4)
1600                 return -1;
1601
1602         if (*wpabuf_head_u8(data) != 0x10) {
1603                 /* Assume this contains full NDEF record */
1604                 tmp = ndef_parse_wifi(data);
1605                 if (tmp == NULL) {
1606                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1607                         return -1;
1608                 }
1609                 wps = tmp;
1610         }
1611
1612         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1613         wpabuf_free(tmp);
1614         return ret;
1615 }
1616
1617
1618 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1619                                              int ndef)
1620 {
1621         struct wpabuf *ret;
1622
1623         if (hapd->wps == NULL)
1624                 return NULL;
1625
1626         ret = wps_get_oob_cred(hapd->wps);
1627         if (ndef && ret) {
1628                 struct wpabuf *tmp;
1629                 tmp = ndef_build_wifi(ret);
1630                 wpabuf_free(ret);
1631                 if (tmp == NULL)
1632                         return NULL;
1633                 ret = tmp;
1634         }
1635
1636         return ret;
1637 }
1638
1639
1640 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1641 {
1642         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1643                                  &hapd->conf->wps_nfc_dh_pubkey,
1644                                  &hapd->conf->wps_nfc_dh_privkey,
1645                                  &hapd->conf->wps_nfc_dev_pw);
1646 }
1647
1648
1649 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1650 {
1651         struct wps_context *wps = hapd->wps;
1652
1653         if (wps == NULL)
1654                 return -1;
1655
1656         if (!hapd->conf->wps_nfc_dh_pubkey ||
1657             !hapd->conf->wps_nfc_dh_privkey ||
1658             !hapd->conf->wps_nfc_dev_pw ||
1659             !hapd->conf->wps_nfc_dev_pw_id)
1660                 return -1;
1661
1662         hostapd_wps_nfc_clear(wps);
1663         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1664         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1665         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1666         wps->ap_nfc_dev_pw = wpabuf_dup(hapd->conf->wps_nfc_dev_pw);
1667
1668         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1669             !wps->ap_nfc_dev_pw) {
1670                 hostapd_wps_nfc_clear(wps);
1671                 return -1;
1672         }
1673
1674         return 0;
1675 }
1676
1677
1678 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1679 {
1680         hostapd_wps_nfc_clear(hapd->wps);
1681 }
1682
1683 #endif /* CONFIG_WPS_NFC */