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         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 (cfg.dualband)
 961                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
 962
 963         wps->registrar = wps_registrar_init(wps, &cfg);
 964         if (wps->registrar == NULL) {
 965                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
 966                 os_free(wps->network_key);
 967                 os_free(wps);
 968                 return -1;
 969         }
 970
 971 #ifdef CONFIG_WPS_UPNP
 972         wps->friendly_name = hapd->conf->friendly_name;
 973         wps->manufacturer_url = hapd->conf->manufacturer_url;
 974         wps->model_description = hapd->conf->model_description;
 975         wps->model_url = hapd->conf->model_url;
 976         wps->upc = hapd->conf->upc;
 977 #endif /* CONFIG_WPS_UPNP */
 978
 979         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
 980
 981         hapd->wps = wps;
 982
 983         return 0;
 984 }
 985
 986
 987 int hostapd_init_wps_complete(struct hostapd_data *hapd)
 988 {
 989         struct wps_context *wps = hapd->wps;
 990
 991         if (wps == NULL)
 992                 return 0;
 993
 994 #ifdef CONFIG_WPS_UPNP
 995         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
 996                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
 997                 wps_registrar_deinit(wps->registrar);
 998                 os_free(wps->network_key);
 999                 os_free(wps);
1000                 hapd->wps = NULL;
1001                 return -1;
1002         }
1003 #endif /* CONFIG_WPS_UPNP */
1004
1005         return 0;
1006 }
1007
1008
1009 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1010 {
1011 #ifdef CONFIG_WPS_NFC
1012         wps->ap_nfc_dev_pw_id = 0;
1013         wpabuf_free(wps->ap_nfc_dh_pubkey);
1014         wps->ap_nfc_dh_pubkey = NULL;
1015         wpabuf_free(wps->ap_nfc_dh_privkey);
1016         wps->ap_nfc_dh_privkey = NULL;
1017         wpabuf_free(wps->ap_nfc_dev_pw);
1018         wps->ap_nfc_dev_pw = NULL;
1019 #endif /* CONFIG_WPS_NFC */
1020 }
1021
1022
1023 void hostapd_deinit_wps(struct hostapd_data *hapd)
1024 {
1025         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1026         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1027         if (hapd->wps == NULL)
1028                 return;
1029 #ifdef CONFIG_WPS_UPNP
1030         hostapd_wps_upnp_deinit(hapd);
1031 #endif /* CONFIG_WPS_UPNP */
1032         wps_registrar_deinit(hapd->wps->registrar);
1033         os_free(hapd->wps->network_key);
1034         wps_device_data_free(&hapd->wps->dev);
1035         wpabuf_free(hapd->wps->dh_pubkey);
1036         wpabuf_free(hapd->wps->dh_privkey);
1037         wpabuf_free(hapd->wps->oob_conf.pubkey_hash);
1038         wpabuf_free(hapd->wps->oob_conf.dev_password);
1039         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1040         hostapd_wps_nfc_clear(hapd->wps);
1041         os_free(hapd->wps);
1042         hapd->wps = NULL;
1043         hostapd_wps_clear_ies(hapd);
1044 }
1045
1046
1047 void hostapd_update_wps(struct hostapd_data *hapd)
1048 {
1049         if (hapd->wps == NULL)
1050                 return;
1051
1052 #ifdef CONFIG_WPS_UPNP
1053         hapd->wps->friendly_name = hapd->conf->friendly_name;
1054         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1055         hapd->wps->model_description = hapd->conf->model_description;
1056         hapd->wps->model_url = hapd->conf->model_url;
1057         hapd->wps->upc = hapd->conf->upc;
1058 #endif /* CONFIG_WPS_UPNP */
1059
1060         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1061
1062         if (hapd->conf->wps_state)
1063                 wps_registrar_update_ie(hapd->wps->registrar);
1064         else
1065                 hostapd_deinit_wps(hapd);
1066 }
1067
1068
1069 struct wps_add_pin_data {
1070         const u8 *addr;
1071         const u8 *uuid;
1072         const u8 *pin;
1073         size_t pin_len;
1074         int timeout;
1075         int added;
1076 };
1077
1078
1079 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1080 {
1081         struct wps_add_pin_data *data = ctx;
1082         int ret;
1083
1084         if (hapd->wps == NULL)
1085                 return 0;
1086         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1087                                     data->uuid, data->pin, data->pin_len,
1088                                     data->timeout);
1089         if (ret == 0)
1090                 data->added++;
1091         return ret;
1092 }
1093
1094
1095 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1096                         const char *uuid, const char *pin, int timeout)
1097 {
1098         u8 u[UUID_LEN];
1099         struct wps_add_pin_data data;
1100
1101         data.addr = addr;
1102         data.uuid = u;
1103         data.pin = (const u8 *) pin;
1104         data.pin_len = os_strlen(pin);
1105         data.timeout = timeout;
1106         data.added = 0;
1107
1108         if (os_strcmp(uuid, "any") == 0)
1109                 data.uuid = NULL;
1110         else {
1111                 if (uuid_str2bin(uuid, u))
1112                         return -1;
1113                 data.uuid = u;
1114         }
1115         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1116                 return -1;
1117         return data.added ? 0 : -1;
1118 }
1119
1120
1121 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1122 {
1123         const u8 *p2p_dev_addr = ctx;
1124         if (hapd->wps == NULL)
1125                 return 0;
1126         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1127 }
1128
1129
1130 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1131                               const u8 *p2p_dev_addr)
1132 {
1133         return hostapd_wps_for_each(hapd, wps_button_pushed,
1134                                     (void *) p2p_dev_addr);
1135 }
1136
1137
1138 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1139 {
1140         if (hapd->wps == NULL)
1141                 return 0;
1142
1143         wps_registrar_wps_cancel(hapd->wps->registrar);
1144         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1145
1146         return 0;
1147 }
1148
1149
1150 int hostapd_wps_cancel(struct hostapd_data *hapd)
1151 {
1152         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1153 }
1154
1155
1156 #ifdef CONFIG_WPS_OOB
1157 int hostapd_wps_start_oob(struct hostapd_data *hapd, char *device_type,
1158                           char *path, char *method, char *name)
1159 {
1160         struct wps_context *wps = hapd->wps;
1161         struct oob_device_data *oob_dev;
1162
1163         oob_dev = wps_get_oob_device(device_type);
1164         if (oob_dev == NULL)
1165                 return -1;
1166         oob_dev->device_path = path;
1167         oob_dev->device_name = name;
1168         wps->oob_conf.oob_method = wps_get_oob_method(method);
1169
1170         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) {
1171                 /*
1172                  * Use pre-configured DH keys in order to be able to write the
1173                  * key hash into the OOB file.
1174                  */
1175                 wpabuf_free(wps->dh_pubkey);
1176                 wpabuf_free(wps->dh_privkey);
1177                 wps->dh_privkey = NULL;
1178                 wps->dh_pubkey = dh_init(dh_groups_get(WPS_DH_GROUP),
1179                                          &wps->dh_privkey);
1180                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
1181                 if (wps->dh_pubkey == NULL) {
1182                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
1183                                    "Diffie-Hellman handshake");
1184                         return -1;
1185                 }
1186         }
1187
1188         if (wps_process_oob(wps, oob_dev, 1) < 0)
1189                 goto error;
1190
1191         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
1192              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
1193             hostapd_wps_add_pin(hapd, NULL, "any",
1194                                 wpabuf_head(wps->oob_conf.dev_password), 0) <
1195             0)
1196                 goto error;
1197
1198         return 0;
1199
1200 error:
1201         wpabuf_free(wps->dh_pubkey);
1202         wps->dh_pubkey = NULL;
1203         wpabuf_free(wps->dh_privkey);
1204         wps->dh_privkey = NULL;
1205         return -1;
1206 }
1207 #endif /* CONFIG_WPS_OOB */
1208
1209
1210 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1211                                     const u8 *bssid,
1212                                     const u8 *ie, size_t ie_len,
1213                                     int ssi_signal)
1214 {
1215         struct hostapd_data *hapd = ctx;
1216         struct wpabuf *wps_ie;
1217         struct ieee802_11_elems elems;
1218
1219         if (hapd->wps == NULL)
1220                 return 0;
1221
1222         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1223                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1224                            MACSTR, MAC2STR(addr));
1225                 return 0;
1226         }
1227
1228         if (elems.ssid && elems.ssid_len > 0 &&
1229             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1230              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1231              0))
1232                 return 0; /* Not for us */
1233
1234         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1235         if (wps_ie == NULL)
1236                 return 0;
1237         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1238                 wpabuf_free(wps_ie);
1239                 return 0;
1240         }
1241
1242         if (wpabuf_len(wps_ie) > 0) {
1243                 int p2p_wildcard = 0;
1244 #ifdef CONFIG_P2P
1245                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1246                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1247                               P2P_WILDCARD_SSID_LEN) == 0)
1248                         p2p_wildcard = 1;
1249 #endif /* CONFIG_P2P */
1250                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1251                                            p2p_wildcard);
1252 #ifdef CONFIG_WPS_UPNP
1253                 /* FIX: what exactly should be included in the WLANEvent?
1254                  * WPS attributes? Full ProbeReq frame? */
1255                 if (!p2p_wildcard)
1256                         upnp_wps_device_send_wlan_event(
1257                                 hapd->wps_upnp, addr,
1258                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1259 #endif /* CONFIG_WPS_UPNP */
1260         }
1261
1262         wpabuf_free(wps_ie);
1263
1264         return 0;
1265 }
1266
1267
1268 #ifdef CONFIG_WPS_UPNP
1269
1270 static int hostapd_rx_req_put_wlan_response(
1271         void *priv, enum upnp_wps_wlanevent_type ev_type,
1272         const u8 *mac_addr, const struct wpabuf *msg,
1273         enum wps_msg_type msg_type)
1274 {
1275         struct hostapd_data *hapd = priv;
1276         struct sta_info *sta;
1277         struct upnp_pending_message *p;
1278
1279         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1280                    MACSTR, ev_type, MAC2STR(mac_addr));
1281         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1282                     wpabuf_head(msg), wpabuf_len(msg));
1283         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1284                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1285                            "PutWLANResponse WLANEventType %d", ev_type);
1286                 return -1;
1287         }
1288
1289         /*
1290          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1291          * server implementation for delivery to the peer.
1292          */
1293
1294         sta = ap_get_sta(hapd, mac_addr);
1295 #ifndef CONFIG_WPS_STRICT
1296         if (!sta) {
1297                 /*
1298                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1299                  * Pick STA that is in an ongoing WPS registration without
1300                  * checking the MAC address.
1301                  */
1302                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1303                            "on NewWLANEventMAC; try wildcard match");
1304                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1305                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1306                                 break;
1307                 }
1308         }
1309 #endif /* CONFIG_WPS_STRICT */
1310
1311         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1312                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1313                 return 0;
1314         }
1315
1316         p = os_zalloc(sizeof(*p));
1317         if (p == NULL)
1318                 return -1;
1319         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1320         p->msg = wpabuf_dup(msg);
1321         p->type = msg_type;
1322         p->next = hapd->wps->upnp_msgs;
1323         hapd->wps->upnp_msgs = p;
1324
1325         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1326 }
1327
1328
1329 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1330                                  struct wps_context *wps)
1331 {
1332         struct upnp_wps_device_ctx *ctx;
1333
1334         if (!hapd->conf->upnp_iface)
1335                 return 0;
1336         ctx = os_zalloc(sizeof(*ctx));
1337         if (ctx == NULL)
1338                 return -1;
1339
1340         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1341         if (hapd->conf->ap_pin)
1342                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1343
1344         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1345                                               hapd->conf->upnp_iface);
1346         if (hapd->wps_upnp == NULL)
1347                 return -1;
1348         wps->wps_upnp = hapd->wps_upnp;
1349
1350         return 0;
1351 }
1352
1353
1354 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1355 {
1356         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1357 }
1358
1359 #endif /* CONFIG_WPS_UPNP */
1360
1361
1362 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1363                             char *buf, size_t buflen)
1364 {
1365         if (hapd->wps == NULL)
1366                 return 0;
1367         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1368 }
1369
1370
1371 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1372 {
1373         struct hostapd_data *hapd = eloop_data;
1374         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1375         hostapd_wps_ap_pin_disable(hapd);
1376         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1377 }
1378
1379
1380 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1381 {
1382         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1383         hapd->ap_pin_failures = 0;
1384         hapd->ap_pin_failures_consecutive = 0;
1385         hapd->conf->ap_setup_locked = 0;
1386         if (hapd->wps->ap_setup_locked) {
1387                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1388                 hapd->wps->ap_setup_locked = 0;
1389                 wps_registrar_update_ie(hapd->wps->registrar);
1390         }
1391         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1392         if (timeout > 0)
1393                 eloop_register_timeout(timeout, 0,
1394                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1395 }
1396
1397
1398 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1399 {
1400         os_free(hapd->conf->ap_pin);
1401         hapd->conf->ap_pin = NULL;
1402 #ifdef CONFIG_WPS_UPNP
1403         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1404 #endif /* CONFIG_WPS_UPNP */
1405         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1406         return 0;
1407 }
1408
1409
1410 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1411 {
1412         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1413         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1414 }
1415
1416
1417 struct wps_ap_pin_data {
1418         char pin_txt[9];
1419         int timeout;
1420 };
1421
1422
1423 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1424 {
1425         struct wps_ap_pin_data *data = ctx;
1426         os_free(hapd->conf->ap_pin);
1427         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1428 #ifdef CONFIG_WPS_UPNP
1429         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1430 #endif /* CONFIG_WPS_UPNP */
1431         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1432         return 0;
1433 }
1434
1435
1436 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1437 {
1438         unsigned int pin;
1439         struct wps_ap_pin_data data;
1440
1441         pin = wps_generate_pin();
1442         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1443         data.timeout = timeout;
1444         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1445         return hapd->conf->ap_pin;
1446 }
1447
1448
1449 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1450 {
1451         return hapd->conf->ap_pin;
1452 }
1453
1454
1455 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1456                            int timeout)
1457 {
1458         struct wps_ap_pin_data data;
1459         int ret;
1460
1461         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1462         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1463                 return -1;
1464         data.timeout = timeout;
1465         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1466 }
1467
1468
1469 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1470 {
1471         if (hapd->wps)
1472                 wps_registrar_update_ie(hapd->wps->registrar);
1473         return 0;
1474 }
1475
1476
1477 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1478 {
1479         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1480 }
1481
1482
1483 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1484                           const char *auth, const char *encr, const char *key)
1485 {
1486         struct wps_credential cred;
1487         size_t len;
1488
1489         os_memset(&cred, 0, sizeof(cred));
1490
1491         len = os_strlen(ssid);
1492         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1493             hexstr2bin(ssid, cred.ssid, len / 2))
1494                 return -1;
1495         cred.ssid_len = len / 2;
1496
1497         if (os_strncmp(auth, "OPEN", 4) == 0)
1498                 cred.auth_type = WPS_AUTH_OPEN;
1499         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1500                 cred.auth_type = WPS_AUTH_WPAPSK;
1501         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1502                 cred.auth_type = WPS_AUTH_WPA2PSK;
1503         else
1504                 return -1;
1505
1506         if (encr) {
1507                 if (os_strncmp(encr, "NONE", 4) == 0)
1508                         cred.encr_type = WPS_ENCR_NONE;
1509                 else if (os_strncmp(encr, "WEP", 3) == 0)
1510                         cred.encr_type = WPS_ENCR_WEP;
1511                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1512                         cred.encr_type = WPS_ENCR_TKIP;
1513                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1514                         cred.encr_type = WPS_ENCR_AES;
1515                 else
1516                         return -1;
1517         } else
1518                 cred.encr_type = WPS_ENCR_NONE;
1519
1520         if (key) {
1521                 len = os_strlen(key);
1522                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1523                     hexstr2bin(key, cred.key, len / 2))
1524                         return -1;
1525                 cred.key_len = len / 2;
1526         }
1527
1528         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1529 }
1530
1531
1532 #ifdef CONFIG_WPS_NFC
1533
1534 struct wps_nfc_password_token_data {
1535         const u8 *oob_dev_pw;
1536         size_t oob_dev_pw_len;
1537         int added;
1538 };
1539
1540
1541 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1542 {
1543         struct wps_nfc_password_token_data *data = ctx;
1544         int ret;
1545
1546         if (hapd->wps == NULL)
1547                 return 0;
1548         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1549                                                    data->oob_dev_pw,
1550                                                    data->oob_dev_pw_len);
1551         if (ret == 0)
1552                 data->added++;
1553         return ret;
1554 }
1555
1556
1557 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1558                                               struct wps_parse_attr *attr)
1559 {
1560         struct wps_nfc_password_token_data data;
1561
1562         data.oob_dev_pw = attr->oob_dev_password;
1563         data.oob_dev_pw_len = attr->oob_dev_password_len;
1564         data.added = 0;
1565         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1566                 return -1;
1567         return data.added ? 0 : -1;
1568 }
1569
1570
1571 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1572                                        const struct wpabuf *wps)
1573 {
1574         struct wps_parse_attr attr;
1575
1576         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1577
1578         if (wps_parse_msg(wps, &attr)) {
1579                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1580                 return -1;
1581         }
1582
1583         if (attr.oob_dev_password)
1584                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1585
1586         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1587         return -1;
1588 }
1589
1590
1591 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1592                              const struct wpabuf *data)
1593 {
1594         const struct wpabuf *wps = data;
1595         struct wpabuf *tmp = NULL;
1596         int ret;
1597
1598         if (wpabuf_len(data) < 4)
1599                 return -1;
1600
1601         if (*wpabuf_head_u8(data) != 0x10) {
1602                 /* Assume this contains full NDEF record */
1603                 tmp = ndef_parse_wifi(data);
1604                 if (tmp == NULL) {
1605                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1606                         return -1;
1607                 }
1608                 wps = tmp;
1609         }
1610
1611         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1612         wpabuf_free(tmp);
1613         return ret;
1614 }
1615
1616
1617 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1618                                              int ndef)
1619 {
1620         struct wpabuf *ret;
1621
1622         if (hapd->wps == NULL)
1623                 return NULL;
1624
1625         ret = wps_get_oob_cred(hapd->wps);
1626         if (ndef && ret) {
1627                 struct wpabuf *tmp;
1628                 tmp = ndef_build_wifi(ret);
1629                 wpabuf_free(ret);
1630                 if (tmp == NULL)
1631                         return NULL;
1632                 ret = tmp;
1633         }
1634
1635         return ret;
1636 }
1637
1638
1639 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1640 {
1641         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1642                                  &hapd->conf->wps_nfc_dh_pubkey,
1643                                  &hapd->conf->wps_nfc_dh_privkey,
1644                                  &hapd->conf->wps_nfc_dev_pw);
1645 }
1646
1647
1648 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1649 {
1650         struct wps_context *wps = hapd->wps;
1651
1652         if (wps == NULL)
1653                 return -1;
1654
1655         if (!hapd->conf->wps_nfc_dh_pubkey ||
1656             !hapd->conf->wps_nfc_dh_privkey ||
1657             !hapd->conf->wps_nfc_dev_pw ||
1658             !hapd->conf->wps_nfc_dev_pw_id)
1659                 return -1;
1660
1661         hostapd_wps_nfc_clear(wps);
1662         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1663         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1664         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1665         wps->ap_nfc_dev_pw = wpabuf_dup(hapd->conf->wps_nfc_dev_pw);
1666
1667         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1668             !wps->ap_nfc_dev_pw) {
1669                 hostapd_wps_nfc_clear(wps);
1670                 return -1;
1671         }
1672
1673         return 0;
1674 }
1675
1676
1677 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1678 {
1679         hostapd_wps_nfc_clear(hapd->wps);
1680 }
1681
1682 #endif /* CONFIG_WPS_NFC */