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         /* Update WPS Status - Authentication Failure */
 711         wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
 712         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 713         hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
 714         os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
 715
 716         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 717 }
 718
 719
 720 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 721 {
 722         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 723                 return 0;
 724
 725         if (hapd->ap_pin_failures_consecutive == 0)
 726                 return 0;
 727
 728         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 729                    "- total validation failures %u (%u consecutive)",
 730                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 731         hapd->ap_pin_failures_consecutive = 0;
 732
 733         return 0;
 734 }
 735
 736
 737 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 738 {
 739         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 740 }
 741
 742
 743 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
 744 {
 745         /* Update WPS Status - PBC Overlap */
 746         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
 747 }
 748
 749
 750 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
 751 {
 752         /* Update WPS PBC Status:PBC Timeout */
 753         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
 754 }
 755
 756
 757 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
 758 {
 759         /* Update WPS PBC status - Active */
 760         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
 761 }
 762
 763
 764 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
 765 {
 766         /* Update WPS PBC status - Active */
 767         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 768 }
 769
 770
 771 static void hostapd_wps_event_success(struct hostapd_data *hapd,
 772                                       struct wps_event_success *success)
 773 {
 774         /* Update WPS status - Success */
 775         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 776         hapd->wps_stats.status = WPS_STATUS_SUCCESS;
 777         os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
 778 }
 779
 780
 781 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 782                                    struct wps_event_fail *fail)
 783 {
 784         /* Update WPS status - Failure */
 785         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 786         os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
 787
 788         hapd->wps_stats.failure_reason = fail->error_indication;
 789
 790         if (fail->error_indication > 0 &&
 791             fail->error_indication < NUM_WPS_EI_VALUES) {
 792                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 793                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 794                         fail->msg, fail->config_error, fail->error_indication,
 795                         wps_ei_str(fail->error_indication));
 796         } else {
 797                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 798                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 799                         fail->msg, fail->config_error);
 800         }
 801 }
 802
 803
 804 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 805                                  union wps_event_data *data)
 806 {
 807         struct hostapd_data *hapd = ctx;
 808
 809         switch (event) {
 810         case WPS_EV_M2D:
 811                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 812                 break;
 813         case WPS_EV_FAIL:
 814                 hostapd_wps_event_fail(hapd, &data->fail);
 815                 break;
 816         case WPS_EV_SUCCESS:
 817                 hostapd_wps_event_success(hapd, &data->success);
 818                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 819                 break;
 820         case WPS_EV_PWD_AUTH_FAIL:
 821                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 822                 break;
 823         case WPS_EV_PBC_OVERLAP:
 824                 hostapd_wps_event_pbc_overlap(hapd);
 825                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 826                 break;
 827         case WPS_EV_PBC_TIMEOUT:
 828                 hostapd_wps_event_pbc_timeout(hapd);
 829                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 830                 break;
 831         case WPS_EV_PBC_ACTIVE:
 832                 hostapd_wps_event_pbc_active(hapd);
 833                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
 834                 break;
 835         case WPS_EV_PBC_DISABLE:
 836                 hostapd_wps_event_pbc_disable(hapd);
 837                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
 838                 break;
 839         case WPS_EV_ER_AP_ADD:
 840                 break;
 841         case WPS_EV_ER_AP_REMOVE:
 842                 break;
 843         case WPS_EV_ER_ENROLLEE_ADD:
 844                 break;
 845         case WPS_EV_ER_ENROLLEE_REMOVE:
 846                 break;
 847         case WPS_EV_ER_AP_SETTINGS:
 848                 break;
 849         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 850                 break;
 851         case WPS_EV_AP_PIN_SUCCESS:
 852                 hostapd_wps_ap_pin_success(hapd);
 853                 break;
 854         }
 855         if (hapd->wps_event_cb)
 856                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 857 }
 858
 859
 860 static int hostapd_wps_rf_band_cb(void *ctx)
 861 {
 862         struct hostapd_data *hapd = ctx;
 863
 864         return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 865                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 866 }
 867
 868
 869 static void hostapd_wps_clear_ies(struct hostapd_data *hapd)
 870 {
 871         wpabuf_free(hapd->wps_beacon_ie);
 872         hapd->wps_beacon_ie = NULL;
 873
 874         wpabuf_free(hapd->wps_probe_resp_ie);
 875         hapd->wps_probe_resp_ie = NULL;
 876
 877         hostapd_set_ap_wps_ie(hapd);
 878 }
 879
 880
 881 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 882 {
 883         const u8 **uuid = ctx;
 884         size_t j;
 885
 886         if (iface == NULL)
 887                 return 0;
 888         for (j = 0; j < iface->num_bss; j++) {
 889                 struct hostapd_data *hapd = iface->bss[j];
 890                 if (hapd->wps && !hapd->conf->wps_independent &&
 891                     !is_nil_uuid(hapd->wps->uuid)) {
 892                         *uuid = hapd->wps->uuid;
 893                         return 1;
 894                 }
 895         }
 896
 897         return 0;
 898 }
 899
 900
 901 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 902 {
 903         const u8 *uuid;
 904         if (iface->interfaces == NULL ||
 905             iface->interfaces->for_each_interface == NULL)
 906                 return NULL;
 907         uuid = NULL;
 908         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 909                                               &uuid);
 910         return uuid;
 911 }
 912
 913
 914 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 915 {
 916         int *count= ctx;
 917         (*count)++;
 918         return 0;
 919 }
 920
 921
 922 static int interface_count(struct hostapd_iface *iface)
 923 {
 924         int count = 0;
 925         if (iface->interfaces == NULL ||
 926             iface->interfaces->for_each_interface == NULL)
 927                 return 0;
 928         iface->interfaces->for_each_interface(iface->interfaces,
 929                                               count_interface_cb, &count);
 930         return count;
 931 }
 932
 933
 934 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 935                                       struct wps_context *wps)
 936 {
 937         int i;
 938
 939         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 940                 wpabuf_free(wps->dev.vendor_ext[i]);
 941                 wps->dev.vendor_ext[i] = NULL;
 942
 943                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 944                         continue;
 945
 946                 wps->dev.vendor_ext[i] =
 947                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 948                 if (wps->dev.vendor_ext[i] == NULL) {
 949                         while (--i >= 0)
 950                                 wpabuf_free(wps->dev.vendor_ext[i]);
 951                         return -1;
 952                 }
 953         }
 954
 955         return 0;
 956 }
 957
 958
 959 int hostapd_init_wps(struct hostapd_data *hapd,
 960                      struct hostapd_bss_config *conf)
 961 {
 962         struct wps_context *wps;
 963         struct wps_registrar_config cfg;
 964
 965         if (conf->wps_state == 0) {
 966                 hostapd_wps_clear_ies(hapd);
 967                 return 0;
 968         }
 969
 970         wps = os_zalloc(sizeof(*wps));
 971         if (wps == NULL)
 972                 return -1;
 973
 974         wps->cred_cb = hostapd_wps_cred_cb;
 975         wps->event_cb = hostapd_wps_event_cb;
 976         wps->rf_band_cb = hostapd_wps_rf_band_cb;
 977         wps->cb_ctx = hapd;
 978
 979         os_memset(&cfg, 0, sizeof(cfg));
 980         wps->wps_state = hapd->conf->wps_state;
 981         wps->ap_setup_locked = hapd->conf->ap_setup_locked;
 982         if (is_nil_uuid(hapd->conf->uuid)) {
 983                 const u8 *uuid;
 984                 uuid = get_own_uuid(hapd->iface);
 985                 if (uuid && !conf->wps_independent) {
 986                         os_memcpy(wps->uuid, uuid, UUID_LEN);
 987                         wpa_hexdump(MSG_DEBUG, "WPS: Clone UUID from another "
 988                                     "interface", wps->uuid, UUID_LEN);
 989                 } else {
 990                         uuid_gen_mac_addr(hapd->own_addr, wps->uuid);
 991                         wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC "
 992                                     "address", wps->uuid, UUID_LEN);
 993                 }
 994         } else {
 995                 os_memcpy(wps->uuid, hapd->conf->uuid, UUID_LEN);
 996                 wpa_hexdump(MSG_DEBUG, "WPS: Use configured UUID",
 997                             wps->uuid, UUID_LEN);
 998         }
 999         wps->ssid_len = hapd->conf->ssid.ssid_len;
1000         os_memcpy(wps->ssid, hapd->conf->ssid.ssid, wps->ssid_len);
1001         wps->ap = 1;
1002         os_memcpy(wps->dev.mac_addr, hapd->own_addr, ETH_ALEN);
1003         wps->dev.device_name = hapd->conf->device_name ?
1004                 os_strdup(hapd->conf->device_name) : NULL;
1005         wps->dev.manufacturer = hapd->conf->manufacturer ?
1006                 os_strdup(hapd->conf->manufacturer) : NULL;
1007         wps->dev.model_name = hapd->conf->model_name ?
1008                 os_strdup(hapd->conf->model_name) : NULL;
1009         wps->dev.model_number = hapd->conf->model_number ?
1010                 os_strdup(hapd->conf->model_number) : NULL;
1011         wps->dev.serial_number = hapd->conf->serial_number ?
1012                 os_strdup(hapd->conf->serial_number) : NULL;
1013         wps->config_methods =
1014                 wps_config_methods_str2bin(hapd->conf->config_methods);
1015 #ifdef CONFIG_WPS2
1016         if ((wps->config_methods &
1017              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1018               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1019                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1020                            "virtual_display for WPS 2.0 compliance");
1021                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1022         }
1023         if ((wps->config_methods &
1024              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1025               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1026                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1027                            "virtual_push_button for WPS 2.0 compliance");
1028                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1029         }
1030 #endif /* CONFIG_WPS2 */
1031         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1032                   WPS_DEV_TYPE_LEN);
1033
1034         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0) {
1035                 os_free(wps);
1036                 return -1;
1037         }
1038
1039         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1040
1041         if (conf->wps_rf_bands) {
1042                 wps->dev.rf_bands = conf->wps_rf_bands;
1043         } else {
1044                 wps->dev.rf_bands =
1045                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1046                         WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1047         }
1048
1049         if (conf->wpa & WPA_PROTO_RSN) {
1050                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1051                         wps->auth_types |= WPS_AUTH_WPA2PSK;
1052                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1053                         wps->auth_types |= WPS_AUTH_WPA2;
1054
1055                 if (conf->rsn_pairwise & WPA_CIPHER_CCMP)
1056                         wps->encr_types |= WPS_ENCR_AES;
1057                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
1058                         wps->encr_types |= WPS_ENCR_TKIP;
1059         }
1060
1061         if (conf->wpa & WPA_PROTO_WPA) {
1062                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1063                         wps->auth_types |= WPS_AUTH_WPAPSK;
1064                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1065                         wps->auth_types |= WPS_AUTH_WPA;
1066
1067                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
1068                         wps->encr_types |= WPS_ENCR_AES;
1069                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
1070                         wps->encr_types |= WPS_ENCR_TKIP;
1071         }
1072
1073         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1074                 wps->encr_types |= WPS_ENCR_NONE;
1075                 wps->auth_types |= WPS_AUTH_OPEN;
1076         } else if (conf->ssid.security_policy == SECURITY_STATIC_WEP) {
1077                 wps->encr_types |= WPS_ENCR_WEP;
1078                 if (conf->auth_algs & WPA_AUTH_ALG_OPEN)
1079                         wps->auth_types |= WPS_AUTH_OPEN;
1080                 if (conf->auth_algs & WPA_AUTH_ALG_SHARED)
1081                         wps->auth_types |= WPS_AUTH_SHARED;
1082         } else if (conf->ssid.security_policy == SECURITY_IEEE_802_1X) {
1083                 wps->auth_types |= WPS_AUTH_OPEN;
1084                 if (conf->default_wep_key_len)
1085                         wps->encr_types |= WPS_ENCR_WEP;
1086                 else
1087                         wps->encr_types |= WPS_ENCR_NONE;
1088         }
1089
1090         if (conf->ssid.wpa_psk_file) {
1091                 /* Use per-device PSKs */
1092         } else if (conf->ssid.wpa_passphrase) {
1093                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1094                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1095         } else if (conf->ssid.wpa_psk) {
1096                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1097                 if (wps->network_key == NULL) {
1098                         os_free(wps);
1099                         return -1;
1100                 }
1101                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1102                                  conf->ssid.wpa_psk->psk, PMK_LEN);
1103                 wps->network_key_len = 2 * PMK_LEN;
1104         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1105                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1106                 if (wps->network_key == NULL) {
1107                         os_free(wps);
1108                         return -1;
1109                 }
1110                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1111                           conf->ssid.wep.len[0]);
1112                 wps->network_key_len = conf->ssid.wep.len[0];
1113         }
1114
1115         if (conf->ssid.wpa_psk) {
1116                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1117                 wps->psk_set = 1;
1118         }
1119
1120         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1121                 /* Override parameters to enable security by default */
1122                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1123                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1124         }
1125
1126         wps->ap_settings = conf->ap_settings;
1127         wps->ap_settings_len = conf->ap_settings_len;
1128
1129         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1130         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1131         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1132         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1133         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1134         cfg.cb_ctx = hapd;
1135         cfg.skip_cred_build = conf->skip_cred_build;
1136         cfg.extra_cred = conf->extra_cred;
1137         cfg.extra_cred_len = conf->extra_cred_len;
1138         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1139                 conf->skip_cred_build;
1140         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1141                 cfg.static_wep_only = 1;
1142         cfg.dualband = interface_count(hapd->iface) > 1;
1143         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1144             (WPS_RF_50GHZ | WPS_RF_24GHZ))
1145                 cfg.dualband = 1;
1146         if (cfg.dualband)
1147                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1148
1149         wps->registrar = wps_registrar_init(wps, &cfg);
1150         if (wps->registrar == NULL) {
1151                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1152                 os_free(wps->network_key);
1153                 os_free(wps);
1154                 return -1;
1155         }
1156
1157 #ifdef CONFIG_WPS_UPNP
1158         wps->friendly_name = hapd->conf->friendly_name;
1159         wps->manufacturer_url = hapd->conf->manufacturer_url;
1160         wps->model_description = hapd->conf->model_description;
1161         wps->model_url = hapd->conf->model_url;
1162         wps->upc = hapd->conf->upc;
1163 #endif /* CONFIG_WPS_UPNP */
1164
1165         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1166
1167         hapd->wps = wps;
1168
1169         return 0;
1170 }
1171
1172
1173 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1174 {
1175         struct wps_context *wps = hapd->wps;
1176
1177         if (wps == NULL)
1178                 return 0;
1179
1180 #ifdef CONFIG_WPS_UPNP
1181         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1182                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1183                 wps_registrar_deinit(wps->registrar);
1184                 os_free(wps->network_key);
1185                 os_free(wps);
1186                 hapd->wps = NULL;
1187                 return -1;
1188         }
1189 #endif /* CONFIG_WPS_UPNP */
1190
1191         return 0;
1192 }
1193
1194
1195 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1196 {
1197 #ifdef CONFIG_WPS_NFC
1198         wps->ap_nfc_dev_pw_id = 0;
1199         wpabuf_free(wps->ap_nfc_dh_pubkey);
1200         wps->ap_nfc_dh_pubkey = NULL;
1201         wpabuf_free(wps->ap_nfc_dh_privkey);
1202         wps->ap_nfc_dh_privkey = NULL;
1203         wpabuf_free(wps->ap_nfc_dev_pw);
1204         wps->ap_nfc_dev_pw = NULL;
1205 #endif /* CONFIG_WPS_NFC */
1206 }
1207
1208
1209 void hostapd_deinit_wps(struct hostapd_data *hapd)
1210 {
1211         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1212         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1213         if (hapd->wps == NULL)
1214                 return;
1215 #ifdef CONFIG_WPS_UPNP
1216         hostapd_wps_upnp_deinit(hapd);
1217 #endif /* CONFIG_WPS_UPNP */
1218         wps_registrar_deinit(hapd->wps->registrar);
1219         os_free(hapd->wps->network_key);
1220         wps_device_data_free(&hapd->wps->dev);
1221         wpabuf_free(hapd->wps->dh_pubkey);
1222         wpabuf_free(hapd->wps->dh_privkey);
1223         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1224         hostapd_wps_nfc_clear(hapd->wps);
1225         os_free(hapd->wps);
1226         hapd->wps = NULL;
1227         hostapd_wps_clear_ies(hapd);
1228 }
1229
1230
1231 void hostapd_update_wps(struct hostapd_data *hapd)
1232 {
1233         if (hapd->wps == NULL)
1234                 return;
1235
1236 #ifdef CONFIG_WPS_UPNP
1237         hapd->wps->friendly_name = hapd->conf->friendly_name;
1238         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1239         hapd->wps->model_description = hapd->conf->model_description;
1240         hapd->wps->model_url = hapd->conf->model_url;
1241         hapd->wps->upc = hapd->conf->upc;
1242 #endif /* CONFIG_WPS_UPNP */
1243
1244         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1245
1246         if (hapd->conf->wps_state)
1247                 wps_registrar_update_ie(hapd->wps->registrar);
1248         else
1249                 hostapd_deinit_wps(hapd);
1250 }
1251
1252
1253 struct wps_add_pin_data {
1254         const u8 *addr;
1255         const u8 *uuid;
1256         const u8 *pin;
1257         size_t pin_len;
1258         int timeout;
1259         int added;
1260 };
1261
1262
1263 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1264 {
1265         struct wps_add_pin_data *data = ctx;
1266         int ret;
1267
1268         if (hapd->wps == NULL)
1269                 return 0;
1270         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1271                                     data->uuid, data->pin, data->pin_len,
1272                                     data->timeout);
1273         if (ret == 0)
1274                 data->added++;
1275         return ret;
1276 }
1277
1278
1279 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1280                         const char *uuid, const char *pin, int timeout)
1281 {
1282         u8 u[UUID_LEN];
1283         struct wps_add_pin_data data;
1284
1285         data.addr = addr;
1286         data.uuid = u;
1287         data.pin = (const u8 *) pin;
1288         data.pin_len = os_strlen(pin);
1289         data.timeout = timeout;
1290         data.added = 0;
1291
1292         if (os_strcmp(uuid, "any") == 0)
1293                 data.uuid = NULL;
1294         else {
1295                 if (uuid_str2bin(uuid, u))
1296                         return -1;
1297                 data.uuid = u;
1298         }
1299         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1300                 return -1;
1301         return data.added ? 0 : -1;
1302 }
1303
1304
1305 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1306 {
1307         const u8 *p2p_dev_addr = ctx;
1308         if (hapd->wps == NULL)
1309                 return 0;
1310         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1311 }
1312
1313
1314 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1315                               const u8 *p2p_dev_addr)
1316 {
1317         return hostapd_wps_for_each(hapd, wps_button_pushed,
1318                                     (void *) p2p_dev_addr);
1319 }
1320
1321
1322 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1323 {
1324         if (hapd->wps == NULL)
1325                 return 0;
1326
1327         wps_registrar_wps_cancel(hapd->wps->registrar);
1328         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1329
1330         return 0;
1331 }
1332
1333
1334 int hostapd_wps_cancel(struct hostapd_data *hapd)
1335 {
1336         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1337 }
1338
1339
1340 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1341                                     const u8 *bssid,
1342                                     const u8 *ie, size_t ie_len,
1343                                     int ssi_signal)
1344 {
1345         struct hostapd_data *hapd = ctx;
1346         struct wpabuf *wps_ie;
1347         struct ieee802_11_elems elems;
1348
1349         if (hapd->wps == NULL)
1350                 return 0;
1351
1352         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1353                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1354                            MACSTR, MAC2STR(addr));
1355                 return 0;
1356         }
1357
1358         if (elems.ssid && elems.ssid_len > 0 &&
1359             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1360              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1361              0))
1362                 return 0; /* Not for us */
1363
1364         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1365         if (wps_ie == NULL)
1366                 return 0;
1367         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1368                 wpabuf_free(wps_ie);
1369                 return 0;
1370         }
1371
1372         if (wpabuf_len(wps_ie) > 0) {
1373                 int p2p_wildcard = 0;
1374 #ifdef CONFIG_P2P
1375                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1376                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1377                               P2P_WILDCARD_SSID_LEN) == 0)
1378                         p2p_wildcard = 1;
1379 #endif /* CONFIG_P2P */
1380                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1381                                            p2p_wildcard);
1382 #ifdef CONFIG_WPS_UPNP
1383                 /* FIX: what exactly should be included in the WLANEvent?
1384                  * WPS attributes? Full ProbeReq frame? */
1385                 if (!p2p_wildcard)
1386                         upnp_wps_device_send_wlan_event(
1387                                 hapd->wps_upnp, addr,
1388                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1389 #endif /* CONFIG_WPS_UPNP */
1390         }
1391
1392         wpabuf_free(wps_ie);
1393
1394         return 0;
1395 }
1396
1397
1398 #ifdef CONFIG_WPS_UPNP
1399
1400 static int hostapd_rx_req_put_wlan_response(
1401         void *priv, enum upnp_wps_wlanevent_type ev_type,
1402         const u8 *mac_addr, const struct wpabuf *msg,
1403         enum wps_msg_type msg_type)
1404 {
1405         struct hostapd_data *hapd = priv;
1406         struct sta_info *sta;
1407         struct upnp_pending_message *p;
1408
1409         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1410                    MACSTR, ev_type, MAC2STR(mac_addr));
1411         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1412                     wpabuf_head(msg), wpabuf_len(msg));
1413         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1414                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1415                            "PutWLANResponse WLANEventType %d", ev_type);
1416                 return -1;
1417         }
1418
1419         /*
1420          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1421          * server implementation for delivery to the peer.
1422          */
1423
1424         sta = ap_get_sta(hapd, mac_addr);
1425 #ifndef CONFIG_WPS_STRICT
1426         if (!sta) {
1427                 /*
1428                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1429                  * Pick STA that is in an ongoing WPS registration without
1430                  * checking the MAC address.
1431                  */
1432                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1433                            "on NewWLANEventMAC; try wildcard match");
1434                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1435                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1436                                 break;
1437                 }
1438         }
1439 #endif /* CONFIG_WPS_STRICT */
1440
1441         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1442                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1443                 return 0;
1444         }
1445
1446         p = os_zalloc(sizeof(*p));
1447         if (p == NULL)
1448                 return -1;
1449         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1450         p->msg = wpabuf_dup(msg);
1451         p->type = msg_type;
1452         p->next = hapd->wps->upnp_msgs;
1453         hapd->wps->upnp_msgs = p;
1454
1455         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1456 }
1457
1458
1459 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1460                                  struct wps_context *wps)
1461 {
1462         struct upnp_wps_device_ctx *ctx;
1463
1464         if (!hapd->conf->upnp_iface)
1465                 return 0;
1466         ctx = os_zalloc(sizeof(*ctx));
1467         if (ctx == NULL)
1468                 return -1;
1469
1470         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1471         if (hapd->conf->ap_pin)
1472                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1473
1474         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1475                                               hapd->conf->upnp_iface);
1476         if (hapd->wps_upnp == NULL)
1477                 return -1;
1478         wps->wps_upnp = hapd->wps_upnp;
1479
1480         return 0;
1481 }
1482
1483
1484 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1485 {
1486         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1487 }
1488
1489 #endif /* CONFIG_WPS_UPNP */
1490
1491
1492 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1493                             char *buf, size_t buflen)
1494 {
1495         if (hapd->wps == NULL)
1496                 return 0;
1497         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1498 }
1499
1500
1501 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1502 {
1503         struct hostapd_data *hapd = eloop_data;
1504         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1505         hostapd_wps_ap_pin_disable(hapd);
1506         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1507 }
1508
1509
1510 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1511 {
1512         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1513         hapd->ap_pin_failures = 0;
1514         hapd->ap_pin_failures_consecutive = 0;
1515         hapd->conf->ap_setup_locked = 0;
1516         if (hapd->wps->ap_setup_locked) {
1517                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1518                 hapd->wps->ap_setup_locked = 0;
1519                 wps_registrar_update_ie(hapd->wps->registrar);
1520         }
1521         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1522         if (timeout > 0)
1523                 eloop_register_timeout(timeout, 0,
1524                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1525 }
1526
1527
1528 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1529 {
1530         os_free(hapd->conf->ap_pin);
1531         hapd->conf->ap_pin = NULL;
1532 #ifdef CONFIG_WPS_UPNP
1533         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1534 #endif /* CONFIG_WPS_UPNP */
1535         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1536         return 0;
1537 }
1538
1539
1540 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1541 {
1542         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1543         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1544 }
1545
1546
1547 struct wps_ap_pin_data {
1548         char pin_txt[9];
1549         int timeout;
1550 };
1551
1552
1553 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1554 {
1555         struct wps_ap_pin_data *data = ctx;
1556         os_free(hapd->conf->ap_pin);
1557         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1558 #ifdef CONFIG_WPS_UPNP
1559         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1560 #endif /* CONFIG_WPS_UPNP */
1561         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1562         return 0;
1563 }
1564
1565
1566 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1567 {
1568         unsigned int pin;
1569         struct wps_ap_pin_data data;
1570
1571         pin = wps_generate_pin();
1572         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1573         data.timeout = timeout;
1574         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1575         return hapd->conf->ap_pin;
1576 }
1577
1578
1579 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1580 {
1581         return hapd->conf->ap_pin;
1582 }
1583
1584
1585 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1586                            int timeout)
1587 {
1588         struct wps_ap_pin_data data;
1589         int ret;
1590
1591         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1592         if (ret < 0 || ret >= (int) sizeof(data.pin_txt))
1593                 return -1;
1594         data.timeout = timeout;
1595         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1596 }
1597
1598
1599 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1600 {
1601         if (hapd->wps)
1602                 wps_registrar_update_ie(hapd->wps->registrar);
1603         return 0;
1604 }
1605
1606
1607 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1608 {
1609         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1610 }
1611
1612
1613 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1614                           const char *auth, const char *encr, const char *key)
1615 {
1616         struct wps_credential cred;
1617         size_t len;
1618
1619         os_memset(&cred, 0, sizeof(cred));
1620
1621         len = os_strlen(ssid);
1622         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1623             hexstr2bin(ssid, cred.ssid, len / 2))
1624                 return -1;
1625         cred.ssid_len = len / 2;
1626
1627         if (os_strncmp(auth, "OPEN", 4) == 0)
1628                 cred.auth_type = WPS_AUTH_OPEN;
1629         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1630                 cred.auth_type = WPS_AUTH_WPAPSK;
1631         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1632                 cred.auth_type = WPS_AUTH_WPA2PSK;
1633         else
1634                 return -1;
1635
1636         if (encr) {
1637                 if (os_strncmp(encr, "NONE", 4) == 0)
1638                         cred.encr_type = WPS_ENCR_NONE;
1639                 else if (os_strncmp(encr, "WEP", 3) == 0)
1640                         cred.encr_type = WPS_ENCR_WEP;
1641                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1642                         cred.encr_type = WPS_ENCR_TKIP;
1643                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1644                         cred.encr_type = WPS_ENCR_AES;
1645                 else
1646                         return -1;
1647         } else
1648                 cred.encr_type = WPS_ENCR_NONE;
1649
1650         if (key) {
1651                 len = os_strlen(key);
1652                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1653                     hexstr2bin(key, cred.key, len / 2))
1654                         return -1;
1655                 cred.key_len = len / 2;
1656         }
1657
1658         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1659 }
1660
1661
1662 #ifdef CONFIG_WPS_NFC
1663
1664 struct wps_nfc_password_token_data {
1665         const u8 *oob_dev_pw;
1666         size_t oob_dev_pw_len;
1667         int added;
1668 };
1669
1670
1671 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1672 {
1673         struct wps_nfc_password_token_data *data = ctx;
1674         int ret;
1675
1676         if (hapd->wps == NULL)
1677                 return 0;
1678         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1679                                                    data->oob_dev_pw,
1680                                                    data->oob_dev_pw_len);
1681         if (ret == 0)
1682                 data->added++;
1683         return ret;
1684 }
1685
1686
1687 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1688                                               struct wps_parse_attr *attr)
1689 {
1690         struct wps_nfc_password_token_data data;
1691
1692         data.oob_dev_pw = attr->oob_dev_password;
1693         data.oob_dev_pw_len = attr->oob_dev_password_len;
1694         data.added = 0;
1695         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1696                 return -1;
1697         return data.added ? 0 : -1;
1698 }
1699
1700
1701 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1702                                        const struct wpabuf *wps)
1703 {
1704         struct wps_parse_attr attr;
1705
1706         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1707
1708         if (wps_parse_msg(wps, &attr)) {
1709                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1710                 return -1;
1711         }
1712
1713         if (attr.oob_dev_password)
1714                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1715
1716         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1717         return -1;
1718 }
1719
1720
1721 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1722                              const struct wpabuf *data)
1723 {
1724         const struct wpabuf *wps = data;
1725         struct wpabuf *tmp = NULL;
1726         int ret;
1727
1728         if (wpabuf_len(data) < 4)
1729                 return -1;
1730
1731         if (*wpabuf_head_u8(data) != 0x10) {
1732                 /* Assume this contains full NDEF record */
1733                 tmp = ndef_parse_wifi(data);
1734                 if (tmp == NULL) {
1735                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1736                         return -1;
1737                 }
1738                 wps = tmp;
1739         }
1740
1741         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1742         wpabuf_free(tmp);
1743         return ret;
1744 }
1745
1746
1747 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1748                                              int ndef)
1749 {
1750         struct wpabuf *ret;
1751
1752         if (hapd->wps == NULL)
1753                 return NULL;
1754
1755         ret = wps_get_oob_cred(hapd->wps);
1756         if (ndef && ret) {
1757                 struct wpabuf *tmp;
1758                 tmp = ndef_build_wifi(ret);
1759                 wpabuf_free(ret);
1760                 if (tmp == NULL)
1761                         return NULL;
1762                 ret = tmp;
1763         }
1764
1765         return ret;
1766 }
1767
1768
1769 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1770 {
1771         /*
1772          * Handover Select carrier record for WPS uses the same format as
1773          * configuration token.
1774          */
1775         return hostapd_wps_nfc_config_token(hapd, ndef);
1776 }
1777
1778
1779 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1780 {
1781         if (hapd->conf->wps_nfc_pw_from_config) {
1782                 return wps_nfc_token_build(ndef,
1783                                            hapd->conf->wps_nfc_dev_pw_id,
1784                                            hapd->conf->wps_nfc_dh_pubkey,
1785                                            hapd->conf->wps_nfc_dev_pw);
1786         }
1787
1788         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1789                                  &hapd->conf->wps_nfc_dh_pubkey,
1790                                  &hapd->conf->wps_nfc_dh_privkey,
1791                                  &hapd->conf->wps_nfc_dev_pw);
1792 }
1793
1794
1795 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1796 {
1797         struct wps_context *wps = hapd->wps;
1798         struct wpabuf *pw;
1799
1800         if (wps == NULL)
1801                 return -1;
1802
1803         if (!hapd->conf->wps_nfc_dh_pubkey ||
1804             !hapd->conf->wps_nfc_dh_privkey ||
1805             !hapd->conf->wps_nfc_dev_pw ||
1806             !hapd->conf->wps_nfc_dev_pw_id)
1807                 return -1;
1808
1809         hostapd_wps_nfc_clear(wps);
1810         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1811         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1812         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1813         pw = hapd->conf->wps_nfc_dev_pw;
1814         wps->ap_nfc_dev_pw = wpabuf_alloc(
1815                 wpabuf_len(pw) * 2 + 1);
1816         if (wps->ap_nfc_dev_pw) {
1817                 wpa_snprintf_hex_uppercase(
1818                         (char *) wpabuf_put(wps->ap_nfc_dev_pw,
1819                                             wpabuf_len(pw) * 2),
1820                         wpabuf_len(pw) * 2 + 1,
1821                         wpabuf_head(pw), wpabuf_len(pw));
1822         }
1823
1824         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1825             !wps->ap_nfc_dev_pw) {
1826                 hostapd_wps_nfc_clear(wps);
1827                 return -1;
1828         }
1829
1830         return 0;
1831 }
1832
1833
1834 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1835 {
1836         hostapd_wps_nfc_clear(hapd->wps);
1837 }
1838
1839 #endif /* CONFIG_WPS_NFC */