src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "utils/uuid.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "eapol_auth/eapol_auth_sm.h"
  18 #include "eapol_auth/eapol_auth_sm_i.h"
  19 #include "wps/wps.h"
  20 #include "wps/wps_defs.h"
  21 #include "wps/wps_dev_attr.h"
  22 #include "wps/wps_attr_parse.h"
  23 #include "hostapd.h"
  24 #include "ap_config.h"
  25 #include "ap_drv_ops.h"
  26 #include "beacon.h"
  27 #include "sta_info.h"
  28 #include "wps_hostapd.h"
  29
  30
  31 #ifdef CONFIG_WPS_UPNP
  32 #include "wps/wps_upnp.h"
  33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  34                                  struct wps_context *wps);
  35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  36 #endif /* CONFIG_WPS_UPNP */
  37
  38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  39                                     const u8 *bssid,
  40                                     const u8 *ie, size_t ie_len,
  41                                     int ssi_signal);
  42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  43
  44
  45 struct wps_for_each_data {
  46         int (*func)(struct hostapd_data *h, void *ctx);
  47         void *ctx;
  48         struct hostapd_data *calling_hapd;
  49 };
  50
  51
  52 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  53 {
  54         struct wps_for_each_data *data = ctx;
  55         size_t j;
  56
  57         if (iface == NULL)
  58                 return 0;
  59         for (j = 0; j < iface->num_bss; j++) {
  60                 struct hostapd_data *hapd = iface->bss[j];
  61                 int ret;
  62
  63                 if (hapd != data->calling_hapd &&
  64                     (hapd->conf->wps_independent ||
  65                      data->calling_hapd->conf->wps_independent))
  66                         continue;
  67
  68                 ret = data->func(hapd, data->ctx);
  69                 if (ret)
  70                         return ret;
  71         }
  72
  73         return 0;
  74 }
  75
  76
  77 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  78                                 int (*func)(struct hostapd_data *h, void *ctx),
  79                                 void *ctx)
  80 {
  81         struct hostapd_iface *iface = hapd->iface;
  82         struct wps_for_each_data data;
  83         data.func = func;
  84         data.ctx = ctx;
  85         data.calling_hapd = hapd;
  86         if (iface->interfaces == NULL ||
  87             iface->interfaces->for_each_interface == NULL)
  88                 return wps_for_each(iface, &data);
  89         return iface->interfaces->for_each_interface(iface->interfaces,
  90                                                      wps_for_each, &data);
  91 }
  92
  93
  94 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
  95                                   size_t psk_len)
  96 {
  97         struct hostapd_data *hapd = ctx;
  98         struct hostapd_wpa_psk *p;
  99         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 100
 101         wpa_printf(MSG_DEBUG, "Received new WPA/WPA2-PSK from WPS for STA "
 102                    MACSTR, MAC2STR(mac_addr));
 103         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 104
 105         if (psk_len != PMK_LEN) {
 106                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
 107                            (unsigned long) psk_len);
 108                 return -1;
 109         }
 110
 111         /* Add the new PSK to runtime PSK list */
 112         p = os_zalloc(sizeof(*p));
 113         if (p == NULL)
 114                 return -1;
 115         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 116         os_memcpy(p->psk, psk, PMK_LEN);
 117
 118         p->next = ssid->wpa_psk;
 119         ssid->wpa_psk = p;
 120
 121         if (ssid->wpa_psk_file) {
 122                 FILE *f;
 123                 char hex[PMK_LEN * 2 + 1];
 124                 /* Add the new PSK to PSK list file */
 125                 f = fopen(ssid->wpa_psk_file, "a");
 126                 if (f == NULL) {
 127                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 128                                    "'%s'", ssid->wpa_psk_file);
 129                         return -1;
 130                 }
 131
 132                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 133                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 134                 fclose(f);
 135         }
 136
 137         return 0;
 138 }
 139
 140
 141 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 142                                  struct wpabuf *probe_resp_ie)
 143 {
 144         struct hostapd_data *hapd = ctx;
 145         wpabuf_free(hapd->wps_beacon_ie);
 146         hapd->wps_beacon_ie = beacon_ie;
 147         wpabuf_free(hapd->wps_probe_resp_ie);
 148         hapd->wps_probe_resp_ie = probe_resp_ie;
 149         if (hapd->beacon_set_done)
 150                 ieee802_11_set_beacon(hapd);
 151         return hostapd_set_ap_wps_ie(hapd);
 152 }
 153
 154
 155 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 156                                       const struct wps_device_data *dev)
 157 {
 158         struct hostapd_data *hapd = ctx;
 159         char uuid[40], txt[400];
 160         int len;
 161         char devtype[WPS_DEV_TYPE_BUFSIZE];
 162         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 163                 return;
 164         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 165         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 166                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 167                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 168                           dev->manufacturer, dev->model_name,
 169                           dev->model_number, dev->serial_number,
 170                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 171                                                sizeof(devtype)));
 172         if (len > 0 && len < (int) sizeof(txt))
 173                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 174
 175         if (hapd->conf->wps_pin_requests) {
 176                 FILE *f;
 177                 struct os_time t;
 178                 f = fopen(hapd->conf->wps_pin_requests, "a");
 179                 if (f == NULL)
 180                         return;
 181                 os_get_time(&t);
 182                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 183                         "\t%s\n",
 184                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 185                         dev->manufacturer, dev->model_name, dev->model_number,
 186                         dev->serial_number,
 187                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 188                                              sizeof(devtype)));
 189                 fclose(f);
 190         }
 191 }
 192
 193
 194 struct wps_stop_reg_data {
 195         struct hostapd_data *current_hapd;
 196         const u8 *uuid_e;
 197         const u8 *dev_pw;
 198         size_t dev_pw_len;
 199 };
 200
 201 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
 202 {
 203         struct wps_stop_reg_data *data = ctx;
 204         if (hapd != data->current_hapd && hapd->wps != NULL)
 205                 wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
 206                                        data->dev_pw, data->dev_pw_len);
 207         return 0;
 208 }
 209
 210
 211 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 212                                        const u8 *uuid_e, const u8 *dev_pw,
 213                                        size_t dev_pw_len)
 214 {
 215         struct hostapd_data *hapd = ctx;
 216         char uuid[40];
 217         struct wps_stop_reg_data data;
 218         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 219                 return;
 220         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 221                 MAC2STR(mac_addr), uuid);
 222         if (hapd->wps_reg_success_cb)
 223                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 224                                          mac_addr, uuid_e);
 225         data.current_hapd = hapd;
 226         data.uuid_e = uuid_e;
 227         data.dev_pw = dev_pw;
 228         data.dev_pw_len = dev_pw_len;
 229         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 230 }
 231
 232
 233 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 234                                          const u8 *uuid_e,
 235                                          const u8 *pri_dev_type,
 236                                          u16 config_methods,
 237                                          u16 dev_password_id, u8 request_type,
 238                                          const char *dev_name)
 239 {
 240         struct hostapd_data *hapd = ctx;
 241         char uuid[40];
 242         char devtype[WPS_DEV_TYPE_BUFSIZE];
 243         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 244                 return;
 245         if (dev_name == NULL)
 246                 dev_name = "";
 247         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 248                      " %s %s 0x%x %u %u [%s]",
 249                      MAC2STR(addr), uuid,
 250                      wps_dev_type_bin2str(pri_dev_type, devtype,
 251                                           sizeof(devtype)),
 252                      config_methods, dev_password_id, request_type, dev_name);
 253 }
 254
 255
 256 static int str_starts(const char *str, const char *start)
 257 {
 258         return os_strncmp(str, start, os_strlen(start)) == 0;
 259 }
 260
 261
 262 static void wps_reload_config(void *eloop_data, void *user_ctx)
 263 {
 264         struct hostapd_iface *iface = eloop_data;
 265
 266         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 267         if (iface->interfaces == NULL ||
 268             iface->interfaces->reload_config(iface) < 0) {
 269                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 270                            "configuration");
 271         }
 272 }
 273
 274
 275 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 276                               size_t attr_len)
 277 {
 278         size_t blen = attr_len * 2 + 1;
 279         char *buf = os_malloc(blen);
 280         if (buf) {
 281                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 282                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 283                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 284                 os_free(buf);
 285         }
 286 }
 287
 288
 289 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd,
 290                                        const struct wps_credential *cred)
 291 {
 292         struct hostapd_bss_config *bss = hapd->conf;
 293
 294         wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration");
 295
 296         bss->wps_state = 2;
 297         if (cred->ssid_len <= HOSTAPD_MAX_SSID_LEN) {
 298                 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len);
 299                 bss->ssid.ssid_len = cred->ssid_len;
 300                 bss->ssid.ssid_set = 1;
 301         }
 302
 303         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 304             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 305                 bss->wpa = 3;
 306         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 307                 bss->wpa = 2;
 308         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 309                 bss->wpa = 1;
 310         else
 311                 bss->wpa = 0;
 312
 313         if (bss->wpa) {
 314                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA))
 315                         bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 316                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 317                         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
 318
 319                 bss->wpa_pairwise = 0;
 320                 if (cred->encr_type & WPS_ENCR_AES)
 321                         bss->wpa_pairwise |= WPA_CIPHER_CCMP;
 322                 if (cred->encr_type & WPS_ENCR_TKIP)
 323                         bss->wpa_pairwise |= WPA_CIPHER_TKIP;
 324                 bss->rsn_pairwise = bss->wpa_pairwise;
 325                 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
 326                                                             bss->wpa_pairwise,
 327                                                             bss->rsn_pairwise);
 328
 329                 if (cred->key_len >= 8 && cred->key_len < 64) {
 330                         os_free(bss->ssid.wpa_passphrase);
 331                         bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1);
 332                         if (bss->ssid.wpa_passphrase)
 333                                 os_memcpy(bss->ssid.wpa_passphrase, cred->key,
 334                                           cred->key_len);
 335                         os_free(bss->ssid.wpa_psk);
 336                         bss->ssid.wpa_psk = NULL;
 337                 } else if (cred->key_len == 64) {
 338                         os_free(bss->ssid.wpa_psk);
 339                         bss->ssid.wpa_psk =
 340                                 os_zalloc(sizeof(struct hostapd_wpa_psk));
 341                         if (bss->ssid.wpa_psk &&
 342                             hexstr2bin((const char *) cred->key,
 343                                        bss->ssid.wpa_psk->psk, PMK_LEN) == 0) {
 344                                 bss->ssid.wpa_psk->group = 1;
 345                                 os_free(bss->ssid.wpa_passphrase);
 346                                 bss->ssid.wpa_passphrase = NULL;
 347                         }
 348                 }
 349                 bss->auth_algs = 1;
 350         } else {
 351                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 352                     (cred->auth_type & WPS_AUTH_SHARED))
 353                         bss->auth_algs = 3;
 354                 else if (cred->auth_type & WPS_AUTH_SHARED)
 355                         bss->auth_algs = 2;
 356                 else
 357                         bss->auth_algs = 1;
 358                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx > 0 &&
 359                     cred->key_idx <= 4) {
 360                         struct hostapd_wep_keys *wep = &bss->ssid.wep;
 361                         int idx = cred->key_idx;
 362                         if (idx)
 363                                 idx--;
 364                         wep->idx = idx;
 365                         if (cred->key_len == 10 || cred->key_len == 26) {
 366                                 os_free(wep->key[idx]);
 367                                 wep->key[idx] = os_malloc(cred->key_len / 2);
 368                                 if (wep->key[idx] == NULL ||
 369                                     hexstr2bin((const char *) cred->key,
 370                                                wep->key[idx],
 371                                                cred->key_len / 2))
 372                                         return -1;
 373                                 wep->len[idx] = cred->key_len / 2;
 374                         } else {
 375                                 os_free(wep->key[idx]);
 376                                 wep->key[idx] = os_malloc(cred->key_len);
 377                                 if (wep->key[idx] == NULL)
 378                                         return -1;
 379                                 os_memcpy(wep->key[idx], cred->key,
 380                                           cred->key_len);
 381                                 wep->len[idx] = cred->key_len;
 382                         }
 383                         wep->keys_set = 1;
 384                 }
 385         }
 386
 387         /* Schedule configuration reload after short period of time to allow
 388          * EAP-WSC to be finished.
 389          */
 390         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 391                                NULL);
 392
 393         return 0;
 394 }
 395
 396
 397 static int hapd_wps_cred_cb(struct hostapd_data *hapd, void *ctx)
 398 {
 399         const struct wps_credential *cred = ctx;
 400         FILE *oconf, *nconf;
 401         size_t len, i;
 402         char *tmp_fname;
 403         char buf[1024];
 404         int multi_bss;
 405         int wpa;
 406
 407         if (hapd->wps == NULL)
 408                 return 0;
 409
 410         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
 411                         cred->cred_attr, cred->cred_attr_len);
 412
 413         wpa_printf(MSG_DEBUG, "WPS: Received new AP Settings");
 414         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
 415         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
 416                    cred->auth_type);
 417         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
 418         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
 419         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
 420                         cred->key, cred->key_len);
 421         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
 422                    MAC2STR(cred->mac_addr));
 423
 424         if ((hapd->conf->wps_cred_processing == 1 ||
 425              hapd->conf->wps_cred_processing == 2) && cred->cred_attr) {
 426                 hapd_new_ap_event(hapd, cred->cred_attr, cred->cred_attr_len);
 427         } else if (hapd->conf->wps_cred_processing == 1 ||
 428                    hapd->conf->wps_cred_processing == 2) {
 429                 struct wpabuf *attr;
 430                 attr = wpabuf_alloc(200);
 431                 if (attr && wps_build_credential_wrap(attr, cred) == 0)
 432                         hapd_new_ap_event(hapd, wpabuf_head_u8(attr),
 433                                           wpabuf_len(attr));
 434                 wpabuf_free(attr);
 435         } else
 436                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_NEW_AP_SETTINGS);
 437
 438         if (hapd->conf->wps_cred_processing == 1)
 439                 return 0;
 440
 441         os_memcpy(hapd->wps->ssid, cred->ssid, cred->ssid_len);
 442         hapd->wps->ssid_len = cred->ssid_len;
 443         hapd->wps->encr_types = cred->encr_type;
 444         hapd->wps->auth_types = cred->auth_type;
 445         if (cred->key_len == 0) {
 446                 os_free(hapd->wps->network_key);
 447                 hapd->wps->network_key = NULL;
 448                 hapd->wps->network_key_len = 0;
 449         } else {
 450                 if (hapd->wps->network_key == NULL ||
 451                     hapd->wps->network_key_len < cred->key_len) {
 452                         hapd->wps->network_key_len = 0;
 453                         os_free(hapd->wps->network_key);
 454                         hapd->wps->network_key = os_malloc(cred->key_len);
 455                         if (hapd->wps->network_key == NULL)
 456                                 return -1;
 457                 }
 458                 hapd->wps->network_key_len = cred->key_len;
 459                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 460         }
 461         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 462
 463         if (hapd->iface->config_fname == NULL)
 464                 return hapd_wps_reconfig_in_memory(hapd, cred);
 465         len = os_strlen(hapd->iface->config_fname) + 5;
 466         tmp_fname = os_malloc(len);
 467         if (tmp_fname == NULL)
 468                 return -1;
 469         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 470
 471         oconf = fopen(hapd->iface->config_fname, "r");
 472         if (oconf == NULL) {
 473                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 474                            "configuration file");
 475                 os_free(tmp_fname);
 476                 return -1;
 477         }
 478
 479         nconf = fopen(tmp_fname, "w");
 480         if (nconf == NULL) {
 481                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 482                            "configuration file");
 483                 os_free(tmp_fname);
 484                 fclose(oconf);
 485                 return -1;
 486         }
 487
 488         fprintf(nconf, "# WPS configuration - START\n");
 489
 490         fprintf(nconf, "wps_state=2\n");
 491
 492         if (is_hex(cred->ssid, cred->ssid_len)) {
 493                 fprintf(nconf, "ssid2=");
 494                 for (i = 0; i < cred->ssid_len; i++)
 495                         fprintf(nconf, "%02x", cred->ssid[i]);
 496                 fprintf(nconf, "\n");
 497         } else {
 498                 fprintf(nconf, "ssid=");
 499                 for (i = 0; i < cred->ssid_len; i++)
 500                         fputc(cred->ssid[i], nconf);
 501                 fprintf(nconf, "\n");
 502         }
 503
 504         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 505             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 506                 wpa = 3;
 507         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 508                 wpa = 2;
 509         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 510                 wpa = 1;
 511         else
 512                 wpa = 0;
 513
 514         if (wpa) {
 515                 char *prefix;
 516                 fprintf(nconf, "wpa=%d\n", wpa);
 517
 518                 fprintf(nconf, "wpa_key_mgmt=");
 519                 prefix = "";
 520                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 521                         fprintf(nconf, "WPA-EAP");
 522                         prefix = " ";
 523                 }
 524                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 525                         fprintf(nconf, "%sWPA-PSK", prefix);
 526                 fprintf(nconf, "\n");
 527
 528                 fprintf(nconf, "wpa_pairwise=");
 529                 prefix = "";
 530                 if (cred->encr_type & WPS_ENCR_AES) {
 531                         fprintf(nconf, "CCMP");
 532                         prefix = " ";
 533                 }
 534                 if (cred->encr_type & WPS_ENCR_TKIP) {
 535                         fprintf(nconf, "%sTKIP", prefix);
 536                 }
 537                 fprintf(nconf, "\n");
 538
 539                 if (cred->key_len >= 8 && cred->key_len < 64) {
 540                         fprintf(nconf, "wpa_passphrase=");
 541                         for (i = 0; i < cred->key_len; i++)
 542                                 fputc(cred->key[i], nconf);
 543                         fprintf(nconf, "\n");
 544                 } else if (cred->key_len == 64) {
 545                         fprintf(nconf, "wpa_psk=");
 546                         for (i = 0; i < cred->key_len; i++)
 547                                 fputc(cred->key[i], nconf);
 548                         fprintf(nconf, "\n");
 549                 } else {
 550                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 551                                    "for WPA/WPA2",
 552                                    (unsigned long) cred->key_len);
 553                 }
 554
 555                 fprintf(nconf, "auth_algs=1\n");
 556         } else {
 557                 if ((cred->auth_type & WPS_AUTH_OPEN) &&
 558                     (cred->auth_type & WPS_AUTH_SHARED))
 559                         fprintf(nconf, "auth_algs=3\n");
 560                 else if (cred->auth_type & WPS_AUTH_SHARED)
 561                         fprintf(nconf, "auth_algs=2\n");
 562                 else
 563                         fprintf(nconf, "auth_algs=1\n");
 564
 565                 if (cred->encr_type & WPS_ENCR_WEP && cred->key_idx <= 4) {
 566                         int key_idx = cred->key_idx;
 567                         if (key_idx)
 568                                 key_idx--;
 569                         fprintf(nconf, "wep_default_key=%d\n", key_idx);
 570                         fprintf(nconf, "wep_key%d=", key_idx);
 571                         if (cred->key_len == 10 || cred->key_len == 26) {
 572                                 /* WEP key as a hex string */
 573                                 for (i = 0; i < cred->key_len; i++)
 574                                         fputc(cred->key[i], nconf);
 575                         } else {
 576                                 /* Raw WEP key; convert to hex */
 577                                 for (i = 0; i < cred->key_len; i++)
 578                                         fprintf(nconf, "%02x", cred->key[i]);
 579                         }
 580                         fprintf(nconf, "\n");
 581                 }
 582         }
 583
 584         fprintf(nconf, "# WPS configuration - END\n");
 585
 586         multi_bss = 0;
 587         while (fgets(buf, sizeof(buf), oconf)) {
 588                 if (os_strncmp(buf, "bss=", 4) == 0)
 589                         multi_bss = 1;
 590                 if (!multi_bss &&
 591                     (str_starts(buf, "ssid=") ||
 592                      str_starts(buf, "ssid2=") ||
 593                      str_starts(buf, "auth_algs=") ||
 594                      str_starts(buf, "wep_default_key=") ||
 595                      str_starts(buf, "wep_key") ||
 596                      str_starts(buf, "wps_state=") ||
 597                      str_starts(buf, "wpa=") ||
 598                      str_starts(buf, "wpa_psk=") ||
 599                      str_starts(buf, "wpa_pairwise=") ||
 600                      str_starts(buf, "rsn_pairwise=") ||
 601                      str_starts(buf, "wpa_key_mgmt=") ||
 602                      str_starts(buf, "wpa_passphrase="))) {
 603                         fprintf(nconf, "#WPS# %s", buf);
 604                 } else
 605                         fprintf(nconf, "%s", buf);
 606         }
 607
 608         fclose(nconf);
 609         fclose(oconf);
 610
 611         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 612                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 613                            "configuration file: %s", strerror(errno));
 614                 os_free(tmp_fname);
 615                 return -1;
 616         }
 617
 618         os_free(tmp_fname);
 619
 620         /* Schedule configuration reload after short period of time to allow
 621          * EAP-WSC to be finished.
 622          */
 623         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 624                                NULL);
 625
 626         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 627
 628         return 0;
 629 }
 630
 631
 632 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 633 {
 634         struct hostapd_data *hapd = ctx;
 635         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 636 }
 637
 638
 639 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 640 {
 641         struct hostapd_data *hapd = eloop_data;
 642
 643         if (hapd->conf->ap_setup_locked)
 644                 return;
 645         if (hapd->ap_pin_failures_consecutive >= 10)
 646                 return;
 647
 648         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 649         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 650         hapd->wps->ap_setup_locked = 0;
 651         wps_registrar_update_ie(hapd->wps->registrar);
 652 }
 653
 654
 655 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 656 {
 657         struct wps_event_pwd_auth_fail *data = ctx;
 658
 659         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 660                 return 0;
 661
 662         /*
 663          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 664          * for some time if this happens multiple times to slow down brute
 665          * force attacks.
 666          */
 667         hapd->ap_pin_failures++;
 668         hapd->ap_pin_failures_consecutive++;
 669         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 670                    "(%u consecutive)",
 671                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 672         if (hapd->ap_pin_failures < 3)
 673                 return 0;
 674
 675         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 676         hapd->wps->ap_setup_locked = 1;
 677
 678         wps_registrar_update_ie(hapd->wps->registrar);
 679
 680         if (!hapd->conf->ap_setup_locked &&
 681             hapd->ap_pin_failures_consecutive >= 10) {
 682                 /*
 683                  * In indefinite lockdown - disable automatic AP PIN
 684                  * reenablement.
 685                  */
 686                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 687                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 688         } else if (!hapd->conf->ap_setup_locked) {
 689                 if (hapd->ap_pin_lockout_time == 0)
 690                         hapd->ap_pin_lockout_time = 60;
 691                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 692                          (hapd->ap_pin_failures % 3) == 0)
 693                         hapd->ap_pin_lockout_time *= 2;
 694
 695                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 696                            hapd->ap_pin_lockout_time);
 697                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 698                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 699                                        hostapd_wps_reenable_ap_pin, hapd,
 700                                        NULL);
 701         }
 702
 703         return 0;
 704 }
 705
 706
 707 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 708                                   struct wps_event_pwd_auth_fail *data)
 709 {
 710         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 711 }
 712
 713
 714 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 715 {
 716         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 717                 return 0;
 718
 719         if (hapd->ap_pin_failures_consecutive == 0)
 720                 return 0;
 721
 722         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 723                    "- total validation failures %u (%u consecutive)",
 724                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 725         hapd->ap_pin_failures_consecutive = 0;
 726
 727         return 0;
 728 }
 729
 730
 731 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 732 {
 733         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 734 }
 735
 736
 737 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 738                                    struct wps_event_fail *fail)
 739 {
 740         if (fail->error_indication > 0 &&
 741             fail->error_indication < NUM_WPS_EI_VALUES) {
 742                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 743                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 744                         fail->msg, fail->config_error, fail->error_indication,
 745                         wps_ei_str(fail->error_indication));
 746         } else {
 747                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 748                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 749                         fail->msg, fail->config_error);
 750         }
 751 }
 752
 753
 754 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 755                                  union wps_event_data *data)
 756 {
 757         struct hostapd_data *hapd = ctx;
 758
 759         switch (event) {
 760         case WPS_EV_M2D:
 761                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 762                 break;
 763         case WPS_EV_FAIL:
 764                 hostapd_wps_event_fail(hapd, &data->fail);
 765                 break;
 766         case WPS_EV_SUCCESS:
 767                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 768                 break;
 769         case WPS_EV_PWD_AUTH_FAIL:
 770                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 771                 break;
 772         case WPS_EV_PBC_OVERLAP:
 773                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 774                 break;
 775         case WPS_EV_PBC_TIMEOUT:
 776                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 777                 break;
 778         case WPS_EV_PBC_ACTIVE:
 779                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
 780                 break;
 781         case WPS_EV_PBC_DISABLE:
 782                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
 783                 break;
 784         case WPS_EV_ER_AP_ADD:
 785                 break;
 786         case WPS_EV_ER_AP_REMOVE:
 787                 break;
 788         case WPS_EV_ER_ENROLLEE_ADD:
 789                 break;
 790         case WPS_EV_ER_ENROLLEE_REMOVE:
 791                 break;
 792         case WPS_EV_ER_AP_SETTINGS:
 793                 break;
 794         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 795                 break;
 796         case WPS_EV_AP_PIN_SUCCESS:
 797                 hostapd_wps_ap_pin_success(hapd);
 798                 break;
 799         }
 800         if (hapd->wps_event_cb)
 801                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 802 }
 803
 804
 805 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 806 {
 807         wpabuf_free(hapd->wps_beacon_ie);
 808         hapd->wps_beacon_ie = NULL;
 809
 810         wpabuf_free(hapd->wps_probe_resp_ie);
 811         hapd->wps_probe_resp_ie = NULL;
 812
 813         hostapd_set_ap_wps_ie(hapd);
 814 }
 815
 816
 817 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 818 {
 819         const u8 **uuid = ctx;
 820         size_t j;
 821
 822         if (iface == NULL)
 823                 return 0;
 824         for (j = 0; j < iface->num_bss; j++) {
 825                 struct hostapd_data *hapd = iface->bss[j];
 826                 if (hapd->wps && !hapd->conf->wps_independent &&
 827                     !is_nil_uuid(hapd->wps->uuid)) {
 828                         *uuid = hapd->wps->uuid;
 829                         return 1;
 830                 }
 831         }
 832
 833         return 0;
 834 }
 835
 836
 837 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 838 {
 839         const u8 *uuid;
 840         if (iface->interfaces == NULL ||
 841             iface->interfaces->for_each_interface == NULL)
 842                 return NULL;
 843         uuid = NULL;
 844         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 845                                               &uuid);
 846         return uuid;
 847 }
 848
 849
 850 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 851 {
 852         int *count= ctx;
 853         (*count)++;
 854         return 0;
 855 }
 856
 857
 858 static int interface_count(struct hostapd_iface *iface)
 859 {
 860         int count = 0;
 861         if (iface->interfaces == NULL ||
 862             iface->interfaces->for_each_interface == NULL)
 863                 return 0;
 864         iface->interfaces->for_each_interface(iface->interfaces,
 865                                               count_interface_cb, &count);
 866         return count;
 867 }
 868
 869
 870 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 871                                       struct wps_context *wps)
 872 {
 873         int i;
 874
 875         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 876                 wpabuf_free(wps->dev.vendor_ext[i]);
 877                 wps->dev.vendor_ext[i] = NULL;
 878
 879                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 880                         continue;
 881
 882                 wps->dev.vendor_ext[i] =
 883                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 884                 if (wps->dev.vendor_ext[i] == NULL) {
 885                         while (--i >= 0)
 886                                 wpabuf_free(wps->dev.vendor_ext[i]);
 887                         return -1;
 888                 }
 889         }
 890
 891         return 0;
 892 }
 893
 894
 895 int hostapd_init_wps(struct hostapd_data *hapd,
 896                      struct hostapd_bss_config *conf)
 897 {
 898         struct wps_context *wps;
 899         struct wps_registrar_config cfg;
 900
 901         if (conf->wps_state == 0) {
 902                 hostapd_wps_clear_ies(hapd);
 903                 return 0;
 904         }
 905
 906         wps = os_zalloc(sizeof(*wps));
 907         if (wps == NULL)
 908                 return -1;
 909
 910         wps->cred_cb = hostapd_wps_cred_cb;
 911         wps->event_cb = hostapd_wps_event_cb;
 912         wps->cb_ctx = hapd;
 913
 914         os_memset(&cfg, 0, sizeof(cfg));
 915         wps->wps_state = hapd->conf->wps_state;
 916         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 917         if (is_nil_uuid(hapd->conf->uuid)) {
 918                 const u8 *uuid;
 919                 uuid = get_own_uuid(hapd->iface);
 920                 if (uuid && !conf->wps_independent) {
 921                         os_memcpy(wps->uuid, uuid, UUID_LEN);
 922                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
 923                                     "interface", wps->uuid, UUID_LEN);
 924                 } else {
 925                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 926                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
 927                                     "address", wps->uuid, UUID_LEN);
 928                 }
 929         } else {
 930                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 931                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
 932                             wps->uuid, UUID_LEN);
 933         }
 934         wps->ssid_len = hapd->conf->ssid.ssid_len;
 935         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
 936         wps->ap = 1;
 937         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
 938         wps->dev.device_name = hapd->conf->device_name ?
 939                 os_strdup(hapd->conf->device_name) : NULL;
 940         wps->dev.manufacturer = hapd->conf->manufacturer ?
 941                 os_strdup(hapd->conf->manufacturer) : NULL;
 942         wps->dev.model_name = hapd->conf->model_name ?
 943                 os_strdup(hapd->conf->model_name) : NULL;
 944         wps->dev.model_number = hapd->conf->model_number ?
 945                 os_strdup(hapd->conf->model_number) : NULL;
 946         wps->dev.serial_number = hapd->conf->serial_number ?
 947                 os_strdup(hapd->conf->serial_number) : NULL;
 948         wps->config_methods =
 949                 wps_config_methods_str2bin(hapd->conf->config_methods);
 950 #ifdef CONFIG_WPS2
 951         if ((wps->config_methods &
 952              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
 953               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
 954                 wpa_printf(MSG_INFO, "WPS: Converting display to "
 955                            "virtual_display for WPS 2.0 compliance");
 956                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
 957         }
 958         if ((wps->config_methods &
 959              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
 960               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
 961                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
 962                            "virtual_push_button for WPS 2.0 compliance");
 963                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
 964         }
 965 #endif /* CONFIG_WPS2 */
 966         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
 967                   WPS_DEV_TYPE_LEN);
 968
 969         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
 970                 os_free(wps);
 971                 return -1;
 972         }
 973
 974         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
 975
 976         if (conf->wps_rf_bands) {
 977                 wps->dev.rf_bands = conf->wps_rf_bands;
 978         } else {
 979                 wps->dev.rf_bands =
 980                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 981                         WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 982         }
 983
 984         if (conf->wpa & WPA_PROTO_RSN) {
 985                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 986                         wps->auth_types |= WPS_AUTH_WPA2PSK;
 987                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
 988                         wps->auth_types |= WPS_AUTH_WPA2;
 989
 990                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
 991                         wps->encr_types |= WPS_ENCR_AES;
 992                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
 993                         wps->encr_types |= WPS_ENCR_TKIP;
 994         }
 995
 996         if (conf->wpa & WPA_PROTO_WPA) {
 997                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
 998                         wps->auth_types |= WPS_AUTH_WPAPSK;
 999                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1000                         wps->auth_types |= WPS_AUTH_WPA;
1001
1002                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
1003                         wps->encr_types |= WPS_ENCR_AES;
1004                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
1005                         wps->encr_types |= WPS_ENCR_TKIP;
1006         }
1007
1008         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1009                 wps->encr_types |= WPS_ENCR_NONE;
1010                 wps->auth_types |= WPS_AUTH_OPEN;
1011         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
1012                 wps->encr_types |= WPS_ENCR_WEP;
1013                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
1014                         wps->auth_types |= WPS_AUTH_OPEN;
1015                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
1016                         wps->auth_types |= WPS_AUTH_SHARED;
1017         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
1018                 wps->auth_types |= WPS_AUTH_OPEN;
1019                 if (conf->default_wep_key_len)
1020                         wps->encr_types |= WPS_ENCR_WEP;
1021                 else
1022                         wps->encr_types |= WPS_ENCR_NONE;
1023         }
1024
1025         if (conf->ssid.wpa_psk_file) {
1026                 /* Use per-device PSKs */
1027         } else if (conf->ssid.wpa_passphrase) {
1028                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1029                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1030         } else if (conf->ssid.wpa_psk) {
1031                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1032                 if (wps->network_key == NULL) {
1033                         os_free(wps);
1034                         return -1;
1035                 }
1036                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1037                                  conf->ssid.wpa_psk->psk, PMK_LEN);
1038                 wps->network_key_len = 2 * PMK_LEN;
1039         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1040                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1041                 if (wps->network_key == NULL) {
1042                         os_free(wps);
1043                         return -1;
1044                 }
1045                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1046                           conf->ssid.wep.len[0]);
1047                 wps->network_key_len = conf->ssid.wep.len[0];
1048         }
1049
1050         if (conf->ssid.wpa_psk) {
1051                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1052                 wps->psk_set = 1;
1053         }
1054
1055         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1056                 /* Override parameters to enable security by default */
1057                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1058                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1059         }
1060
1061         wps->ap_settings = conf->ap_settings;
1062         wps->ap_settings_len = conf->ap_settings_len;
1063
1064         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1065         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1066         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1067         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1068         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1069         cfg.cb_ctx = hapd;
1070         cfg.skip_cred_build = conf->skip_cred_build;
1071         cfg.extra_cred = conf->extra_cred;
1072         cfg.extra_cred_len = conf->extra_cred_len;
1073         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1074                 conf->skip_cred_build;
1075         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1076                 cfg.static_wep_only = 1;
1077         cfg.dualband = interface_count(hapd->iface) > 1;
1078         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1079             (WPS_RF_50GHZ | WPS_RF_24GHZ))
1080                 cfg.dualband = 1;
1081         if (cfg.dualband)
1082                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1083
1084         wps->registrar = wps_registrar_init(wps, &cfg);
1085         if (wps->registrar == NULL) {
1086                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1087                 os_free(wps->network_key);
1088                 os_free(wps);
1089                 return -1;
1090         }
1091
1092 #ifdef CONFIG_WPS_UPNP
1093         wps->friendly_name = hapd->conf->friendly_name;
1094         wps->manufacturer_url = hapd->conf->manufacturer_url;
1095         wps->model_description = hapd->conf->model_description;
1096         wps->model_url = hapd->conf->model_url;
1097         wps->upc = hapd->conf->upc;
1098 #endif /* CONFIG_WPS_UPNP */
1099
1100         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1101
1102         hapd->wps = wps;
1103
1104         return 0;
1105 }
1106
1107
1108 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1109 {
1110         struct wps_context *wps = hapd->wps;
1111
1112         if (wps == NULL)
1113                 return 0;
1114
1115 #ifdef CONFIG_WPS_UPNP
1116         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1117                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1118                 wps_registrar_deinit(wps->registrar);
1119                 os_free(wps->network_key);
1120                 os_free(wps);
1121                 hapd->wps = NULL;
1122                 return -1;
1123         }
1124 #endif /* CONFIG_WPS_UPNP */
1125
1126         return 0;
1127 }
1128
1129
1130 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1131 {
1132 #ifdef CONFIG_WPS_NFC
1133         wps->ap_nfc_dev_pw_id = 0;
1134         wpabuf_free(wps->ap_nfc_dh_pubkey);
1135         wps->ap_nfc_dh_pubkey = NULL;
1136         wpabuf_free(wps->ap_nfc_dh_privkey);
1137         wps->ap_nfc_dh_privkey = NULL;
1138         wpabuf_free(wps->ap_nfc_dev_pw);
1139         wps->ap_nfc_dev_pw = NULL;
1140 #endif /* CONFIG_WPS_NFC */
1141 }
1142
1143
1144 void hostapd_deinit_wps(struct hostapd_data *hapd)
1145 {
1146         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1147         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1148         if (hapd->wps == NULL)
1149                 return;
1150 #ifdef CONFIG_WPS_UPNP
1151         hostapd_wps_upnp_deinit(hapd);
1152 #endif /* CONFIG_WPS_UPNP */
1153         wps_registrar_deinit(hapd->wps->registrar);
1154         os_free(hapd->wps->network_key);
1155         wps_device_data_free(&hapd->wps->dev);
1156         wpabuf_free(hapd->wps->dh_pubkey);
1157         wpabuf_free(hapd->wps->dh_privkey);
1158         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1159         hostapd_wps_nfc_clear(hapd->wps);
1160         os_free(hapd->wps);
1161         hapd->wps = NULL;
1162         hostapd_wps_clear_ies(hapd);
1163 }
1164
1165
1166 void hostapd_update_wps(struct hostapd_data *hapd)
1167 {
1168         if (hapd->wps == NULL)
1169                 return;
1170
1171 #ifdef CONFIG_WPS_UPNP
1172         hapd->wps->friendly_name = hapd->conf->friendly_name;
1173         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1174         hapd->wps->model_description = hapd->conf->model_description;
1175         hapd->wps->model_url = hapd->conf->model_url;
1176         hapd->wps->upc = hapd->conf->upc;
1177 #endif /* CONFIG_WPS_UPNP */
1178
1179         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1180
1181         if (hapd->conf->wps_state)
1182                 wps_registrar_update_ie(hapd->wps->registrar);
1183         else
1184                 hostapd_deinit_wps(hapd);
1185 }
1186
1187
1188 struct wps_add_pin_data {
1189         const u8 *addr;
1190         const u8 *uuid;
1191         const u8 *pin;
1192         size_t pin_len;
1193         int timeout;
1194         int added;
1195 };
1196
1197
1198 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1199 {
1200         struct wps_add_pin_data *data = ctx;
1201         int ret;
1202
1203         if (hapd->wps == NULL)
1204                 return 0;
1205         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1206                                     data->uuid, data->pin, data->pin_len,
1207                                     data->timeout);
1208         if (ret == 0)
1209                 data->added++;
1210         return ret;
1211 }
1212
1213
1214 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1215                         const char *uuid, const char *pin, int timeout)
1216 {
1217         u8 u[UUID_LEN];
1218         struct wps_add_pin_data data;
1219
1220         data.addr = addr;
1221         data.uuid = u;
1222         data.pin = (const u8 *) pin;
1223         data.pin_len = os_strlen(pin);
1224         data.timeout = timeout;
1225         data.added = 0;
1226
1227         if (os_strcmp(uuid, "any") == 0)
1228                 data.uuid = NULL;
1229         else {
1230                 if (uuid_str2bin(uuid, u))
1231                         return -1;
1232                 data.uuid = u;
1233         }
1234         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1235                 return -1;
1236         return data.added ? 0 : -1;
1237 }
1238
1239
1240 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1241 {
1242         const u8 *p2p_dev_addr = ctx;
1243         if (hapd->wps == NULL)
1244                 return 0;
1245         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1246 }
1247
1248
1249 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1250                               const u8 *p2p_dev_addr)
1251 {
1252         return hostapd_wps_for_each(hapd, wps_button_pushed,
1253                                     (void *) p2p_dev_addr);
1254 }
1255
1256
1257 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1258 {
1259         if (hapd->wps == NULL)
1260                 return 0;
1261
1262         wps_registrar_wps_cancel(hapd->wps->registrar);
1263         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1264
1265         return 0;
1266 }
1267
1268
1269 int hostapd_wps_cancel(struct hostapd_data *hapd)
1270 {
1271         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1272 }
1273
1274
1275 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1276                                     const u8 *bssid,
1277                                     const u8 *ie, size_t ie_len,
1278                                     int ssi_signal)
1279 {
1280         struct hostapd_data *hapd = ctx;
1281         struct wpabuf *wps_ie;
1282         struct ieee802_11_elems elems;
1283
1284         if (hapd->wps == NULL)
1285                 return 0;
1286
1287         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1288                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1289                            MACSTR, MAC2STR(addr));
1290                 return 0;
1291         }
1292
1293         if (elems.ssid && elems.ssid_len > 0 &&
1294             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1295              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1296              0))
1297                 return 0; /* Not for us */
1298
1299         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1300         if (wps_ie == NULL)
1301                 return 0;
1302         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1303                 wpabuf_free(wps_ie);
1304                 return 0;
1305         }
1306
1307         if (wpabuf_len(wps_ie) > 0) {
1308                 int p2p_wildcard = 0;
1309 #ifdef CONFIG_P2P
1310                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1311                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1312                               P2P_WILDCARD_SSID_LEN) == 0)
1313                         p2p_wildcard = 1;
1314 #endif /* CONFIG_P2P */
1315                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1316                                            p2p_wildcard);
1317 #ifdef CONFIG_WPS_UPNP
1318                 /* FIX: what exactly should be included in the WLANEvent?
1319                  * WPS attributes? Full ProbeReq frame? */
1320                 if (!p2p_wildcard)
1321                         upnp_wps_device_send_wlan_event(
1322                                 hapd->wps_upnp, addr,
1323                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1324 #endif /* CONFIG_WPS_UPNP */
1325         }
1326
1327         wpabuf_free(wps_ie);
1328
1329         return 0;
1330 }
1331
1332
1333 #ifdef CONFIG_WPS_UPNP
1334
1335 static int hostapd_rx_req_put_wlan_response(
1336         void *priv, enum upnp_wps_wlanevent_type ev_type,
1337         const u8 *mac_addr, const struct wpabuf *msg,
1338         enum wps_msg_type msg_type)
1339 {
1340         struct hostapd_data *hapd = priv;
1341         struct sta_info *sta;
1342         struct upnp_pending_message *p;
1343
1344         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1345                    MACSTR, ev_type, MAC2STR(mac_addr));
1346         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1347                     wpabuf_head(msg), wpabuf_len(msg));
1348         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1349                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1350                            "PutWLANResponse WLANEventType %d", ev_type);
1351                 return -1;
1352         }
1353
1354         /*
1355          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1356          * server implementation for delivery to the peer.
1357          */
1358
1359         sta = ap_get_sta(hapd, mac_addr);
1360 #ifndef CONFIG_WPS_STRICT
1361         if (!sta) {
1362                 /*
1363                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1364                  * Pick STA that is in an ongoing WPS registration without
1365                  * checking the MAC address.
1366                  */
1367                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1368                            "on NewWLANEventMAC; try wildcard match");
1369                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1370                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1371                                 break;
1372                 }
1373         }
1374 #endif /* CONFIG_WPS_STRICT */
1375
1376         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1377                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1378                 return 0;
1379         }
1380
1381         p = os_zalloc(sizeof(*p));
1382         if (p == NULL)
1383                 return -1;
1384         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1385         p->msg = wpabuf_dup(msg);
1386         p->type = msg_type;
1387         p->next = hapd->wps->upnp_msgs;
1388         hapd->wps->upnp_msgs = p;
1389
1390         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1391 }
1392
1393
1394 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1395                                  struct wps_context *wps)
1396 {
1397         struct upnp_wps_device_ctx *ctx;
1398
1399         if (!hapd->conf->upnp_iface)
1400                 return 0;
1401         ctx = os_zalloc(sizeof(*ctx));
1402         if (ctx == NULL)
1403                 return -1;
1404
1405         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1406         if (hapd->conf->ap_pin)
1407                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1408
1409         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1410                                               hapd->conf->upnp_iface);
1411         if (hapd->wps_upnp == NULL)
1412                 return -1;
1413         wps->wps_upnp = hapd->wps_upnp;
1414
1415         return 0;
1416 }
1417
1418
1419 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1420 {
1421         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1422 }
1423
1424 #endif /* CONFIG_WPS_UPNP */
1425
1426
1427 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1428                             char *buf, size_t buflen)
1429 {
1430         if (hapd->wps == NULL)
1431                 return 0;
1432         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1433 }
1434
1435
1436 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1437 {
1438         struct hostapd_data *hapd = eloop_data;
1439         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1440         hostapd_wps_ap_pin_disable(hapd);
1441         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1442 }
1443
1444
1445 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1446 {
1447         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1448         hapd->ap_pin_failures = 0;
1449         hapd->ap_pin_failures_consecutive = 0;
1450         hapd->conf->ap_setup_locked = 0;
1451         if (hapd->wps->ap_setup_locked) {
1452                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1453                 hapd->wps->ap_setup_locked = 0;
1454                 wps_registrar_update_ie(hapd->wps->registrar);
1455         }
1456         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1457         if (timeout > 0)
1458                 eloop_register_timeout(timeout, 0,
1459                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1460 }
1461
1462
1463 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1464 {
1465         os_free(hapd->conf->ap_pin);
1466         hapd->conf->ap_pin = NULL;
1467 #ifdef CONFIG_WPS_UPNP
1468         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1469 #endif /* CONFIG_WPS_UPNP */
1470         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1471         return 0;
1472 }
1473
1474
1475 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1476 {
1477         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1478         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1479 }
1480
1481
1482 struct wps_ap_pin_data {
1483         char pin_txt[9];
1484         int timeout;
1485 };
1486
1487
1488 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1489 {
1490         struct wps_ap_pin_data *data = ctx;
1491         os_free(hapd->conf->ap_pin);
1492         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1493 #ifdef CONFIG_WPS_UPNP
1494         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1495 #endif /* CONFIG_WPS_UPNP */
1496         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1497         return 0;
1498 }
1499
1500
1501 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1502 {
1503         unsigned int pin;
1504         struct wps_ap_pin_data data;
1505
1506         pin = wps_generate_pin();
1507         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1508         data.timeout = timeout;
1509         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1510         return hapd->conf->ap_pin;
1511 }
1512
1513
1514 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1515 {
1516         return hapd->conf->ap_pin;
1517 }
1518
1519
1520 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1521                            int timeout)
1522 {
1523         struct wps_ap_pin_data data;
1524         int ret;
1525
1526         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1527         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1528                 return -1;
1529         data.timeout = timeout;
1530         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1531 }
1532
1533
1534 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1535 {
1536         if (hapd->wps)
1537                 wps_registrar_update_ie(hapd->wps->registrar);
1538         return 0;
1539 }
1540
1541
1542 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1543 {
1544         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1545 }
1546
1547
1548 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1549                           const char *auth, const char *encr, const char *key)
1550 {
1551         struct wps_credential cred;
1552         size_t len;
1553
1554         os_memset(&cred, 0, sizeof(cred));
1555
1556         len = os_strlen(ssid);
1557         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1558             hexstr2bin(ssid, cred.ssid, len / 2))
1559                 return -1;
1560         cred.ssid_len = len / 2;
1561
1562         if (os_strncmp(auth, "OPEN", 4) == 0)
1563                 cred.auth_type = WPS_AUTH_OPEN;
1564         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1565                 cred.auth_type = WPS_AUTH_WPAPSK;
1566         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1567                 cred.auth_type = WPS_AUTH_WPA2PSK;
1568         else
1569                 return -1;
1570
1571         if (encr) {
1572                 if (os_strncmp(encr, "NONE", 4) == 0)
1573                         cred.encr_type = WPS_ENCR_NONE;
1574                 else if (os_strncmp(encr, "WEP", 3) == 0)
1575                         cred.encr_type = WPS_ENCR_WEP;
1576                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1577                         cred.encr_type = WPS_ENCR_TKIP;
1578                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1579                         cred.encr_type = WPS_ENCR_AES;
1580                 else
1581                         return -1;
1582         } else
1583                 cred.encr_type = WPS_ENCR_NONE;
1584
1585         if (key) {
1586                 len = os_strlen(key);
1587                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1588                     hexstr2bin(key, cred.key, len / 2))
1589                         return -1;
1590                 cred.key_len = len / 2;
1591         }
1592
1593         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1594 }
1595
1596
1597 #ifdef CONFIG_WPS_NFC
1598
1599 struct wps_nfc_password_token_data {
1600         const u8 *oob_dev_pw;
1601         size_t oob_dev_pw_len;
1602         int added;
1603 };
1604
1605
1606 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1607 {
1608         struct wps_nfc_password_token_data *data = ctx;
1609         int ret;
1610
1611         if (hapd->wps == NULL)
1612                 return 0;
1613         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1614                                                    data->oob_dev_pw,
1615                                                    data->oob_dev_pw_len);
1616         if (ret == 0)
1617                 data->added++;
1618         return ret;
1619 }
1620
1621
1622 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1623                                               struct wps_parse_attr *attr)
1624 {
1625         struct wps_nfc_password_token_data data;
1626
1627         data.oob_dev_pw = attr->oob_dev_password;
1628         data.oob_dev_pw_len = attr->oob_dev_password_len;
1629         data.added = 0;
1630         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1631                 return -1;
1632         return data.added ? 0 : -1;
1633 }
1634
1635
1636 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1637                                        const struct wpabuf *wps)
1638 {
1639         struct wps_parse_attr attr;
1640
1641         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1642
1643         if (wps_parse_msg(wps, &attr)) {
1644                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1645                 return -1;
1646         }
1647
1648         if (attr.oob_dev_password)
1649                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1650
1651         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1652         return -1;
1653 }
1654
1655
1656 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1657                              const struct wpabuf *data)
1658 {
1659         const struct wpabuf *wps = data;
1660         struct wpabuf *tmp = NULL;
1661         int ret;
1662
1663         if (wpabuf_len(data) < 4)
1664                 return -1;
1665
1666         if (*wpabuf_head_u8(data) != 0x10) {
1667                 /* Assume this contains full NDEF record */
1668                 tmp = ndef_parse_wifi(data);
1669                 if (tmp == NULL) {
1670                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1671                         return -1;
1672                 }
1673                 wps = tmp;
1674         }
1675
1676         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1677         wpabuf_free(tmp);
1678         return ret;
1679 }
1680
1681
1682 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1683                                              int ndef)
1684 {
1685         struct wpabuf *ret;
1686
1687         if (hapd->wps == NULL)
1688                 return NULL;
1689
1690         ret = wps_get_oob_cred(hapd->wps);
1691         if (ndef && ret) {
1692                 struct wpabuf *tmp;
1693                 tmp = ndef_build_wifi(ret);
1694                 wpabuf_free(ret);
1695                 if (tmp == NULL)
1696                         return NULL;
1697                 ret = tmp;
1698         }
1699
1700         return ret;
1701 }
1702
1703
1704 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1705 {
1706         /*
1707          * Handover Select carrier record for WPS uses the same format as
1708          * configuration token.
1709          */
1710         return hostapd_wps_nfc_config_token(hapd, ndef);
1711 }
1712
1713
1714 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1715 {
1716         if (hapd->conf->wps_nfc_pw_from_config) {
1717                 return wps_nfc_token_build(ndef,
1718                                            hapd->conf->wps_nfc_dev_pw_id,
1719                                            hapd->conf->wps_nfc_dh_pubkey,
1720                                            hapd->conf->wps_nfc_dev_pw);
1721         }
1722
1723         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1724                                  &hapd->conf->wps_nfc_dh_pubkey,
1725                                  &hapd->conf->wps_nfc_dh_privkey,
1726                                  &hapd->conf->wps_nfc_dev_pw);
1727 }
1728
1729
1730 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1731 {
1732         struct wps_context *wps = hapd->wps;
1733         struct wpabuf *pw;
1734
1735         if (wps == NULL)
1736                 return -1;
1737
1738         if (!hapd->conf->wps_nfc_dh_pubkey ||
1739             !hapd->conf->wps_nfc_dh_privkey ||
1740             !hapd->conf->wps_nfc_dev_pw ||
1741             !hapd->conf->wps_nfc_dev_pw_id)
1742                 return -1;
1743
1744         hostapd_wps_nfc_clear(wps);
1745         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1746         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1747         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1748         pw = hapd->conf->wps_nfc_dev_pw;
1749         wps->ap_nfc_dev_pw = wpabuf_alloc(
1750                 wpabuf_len(pw) * 2 + 1);
1751         if (wps->ap_nfc_dev_pw) {
1752                 wpa_snprintf_hex_uppercase(
1753                         (char *) wpabuf_put(wps->ap_nfc_dev_pw,
1754                                             wpabuf_len(pw) * 2),
1755                         wpabuf_len(pw) * 2 + 1,
1756                         wpabuf_head(pw), wpabuf_len(pw));
1757         }
1758
1759         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1760             !wps->ap_nfc_dev_pw) {
1761                 hostapd_wps_nfc_clear(wps);
1762                 return -1;
1763         }
1764
1765         return 0;
1766 }
1767
1768
1769 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1770 {
1771         hostapd_wps_nfc_clear(hapd->wps);
1772 }
1773
1774 #endif /* CONFIG_WPS_NFC */