contrib/wpa/src/ap/wps_hostapd.c

   1 /*
   2  * hostapd / WPS integration
   3  * Copyright (c) 2008-2012, Jouni Malinen <j@w1.fi>
   4  *
   5  * This software may be distributed under the terms of the BSD license.
   6  * See README for more details.
   7  */
   8
   9 #include "utils/includes.h"
  10
  11 #include "utils/common.h"
  12 #include "utils/eloop.h"
  13 #include "utils/uuid.h"
  14 #include "common/wpa_ctrl.h"
  15 #include "common/ieee802_11_defs.h"
  16 #include "common/ieee802_11_common.h"
  17 #include "eapol_auth/eapol_auth_sm.h"
  18 #include "eapol_auth/eapol_auth_sm_i.h"
  19 #include "wps/wps.h"
  20 #include "wps/wps_defs.h"
  21 #include "wps/wps_dev_attr.h"
  22 #include "wps/wps_attr_parse.h"
  23 #include "hostapd.h"
  24 #include "ap_config.h"
  25 #include "ap_drv_ops.h"
  26 #include "beacon.h"
  27 #include "sta_info.h"
  28 #include "wps_hostapd.h"
  29
  30
  31 #ifdef CONFIG_WPS_UPNP
  32 #include "wps/wps_upnp.h"
  33 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
  34                                  struct wps_context *wps);
  35 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd);
  36 #endif /* CONFIG_WPS_UPNP */
  37
  38 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
  39                                     const u8 *bssid,
  40                                     const u8 *ie, size_t ie_len,
  41                                     int ssi_signal);
  42 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx);
  43 static void hostapd_wps_nfc_clear(struct wps_context *wps);
  44
  45
  46 struct wps_for_each_data {
  47         int (*func)(struct hostapd_data *h, void *ctx);
  48         void *ctx;
  49         struct hostapd_data *calling_hapd;
  50 };
  51
  52
  53 static int wps_for_each(struct hostapd_iface *iface, void *ctx)
  54 {
  55         struct wps_for_each_data *data = ctx;
  56         size_t j;
  57
  58         if (iface == NULL)
  59                 return 0;
  60         for (j = 0; j < iface->num_bss; j++) {
  61                 struct hostapd_data *hapd = iface->bss[j];
  62                 int ret;
  63
  64                 if (hapd != data->calling_hapd &&
  65                     (hapd->conf->wps_independent ||
  66                      data->calling_hapd->conf->wps_independent))
  67                         continue;
  68
  69                 ret = data->func(hapd, data->ctx);
  70                 if (ret)
  71                         return ret;
  72         }
  73
  74         return 0;
  75 }
  76
  77
  78 static int hostapd_wps_for_each(struct hostapd_data *hapd,
  79                                 int (*func)(struct hostapd_data *h, void *ctx),
  80                                 void *ctx)
  81 {
  82         struct hostapd_iface *iface = hapd->iface;
  83         struct wps_for_each_data data;
  84         data.func = func;
  85         data.ctx = ctx;
  86         data.calling_hapd = hapd;
  87         if (iface->interfaces == NULL ||
  88             iface->interfaces->for_each_interface == NULL)
  89                 return wps_for_each(iface, &data);
  90         return iface->interfaces->for_each_interface(iface->interfaces,
  91                                                      wps_for_each, &data);
  92 }
  93
  94
  95 static int hostapd_wps_new_psk_cb(void *ctx, const u8 *mac_addr,
  96                                   const u8 *p2p_dev_addr, const u8 *psk,
  97                                   size_t psk_len)
  98 {
  99         struct hostapd_data *hapd = ctx;
 100         struct hostapd_wpa_psk *p;
 101         struct hostapd_ssid *ssid = &hapd->conf->ssid;
 102
 103         if (is_zero_ether_addr(p2p_dev_addr)) {
 104                 wpa_printf(MSG_DEBUG,
 105                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR,
 106                            MAC2STR(mac_addr));
 107         } else {
 108                 wpa_printf(MSG_DEBUG,
 109                            "Received new WPA/WPA2-PSK from WPS for STA " MACSTR
 110                            " P2P Device Addr " MACSTR,
 111                            MAC2STR(mac_addr), MAC2STR(p2p_dev_addr));
 112         }
 113         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
 114
 115         if (psk_len != PMK_LEN) {
 116                 wpa_printf(MSG_DEBUG, "Unexpected PSK length %lu",
 117                            (unsigned long) psk_len);
 118                 return -1;
 119         }
 120
 121         /* Add the new PSK to runtime PSK list */
 122         p = os_zalloc(sizeof(*p));
 123         if (p == NULL)
 124                 return -1;
 125         os_memcpy(p->addr, mac_addr, ETH_ALEN);
 126         os_memcpy(p->p2p_dev_addr, p2p_dev_addr, ETH_ALEN);
 127         os_memcpy(p->psk, psk, PMK_LEN);
 128
 129         if (hapd->new_psk_cb) {
 130                 hapd->new_psk_cb(hapd->new_psk_cb_ctx, mac_addr, p2p_dev_addr,
 131                                  psk, psk_len);
 132         }
 133
 134         p->next = ssid->wpa_psk;
 135         ssid->wpa_psk = p;
 136
 137         if (ssid->wpa_psk_file) {
 138                 FILE *f;
 139                 char hex[PMK_LEN * 2 + 1];
 140                 /* Add the new PSK to PSK list file */
 141                 f = fopen(ssid->wpa_psk_file, "a");
 142                 if (f == NULL) {
 143                         wpa_printf(MSG_DEBUG, "Failed to add the PSK to "
 144                                    "'%s'", ssid->wpa_psk_file);
 145                         return -1;
 146                 }
 147
 148                 wpa_snprintf_hex(hex, sizeof(hex), psk, psk_len);
 149                 fprintf(f, MACSTR " %s\n", MAC2STR(mac_addr), hex);
 150                 fclose(f);
 151         }
 152
 153         return 0;
 154 }
 155
 156
 157 static int hostapd_wps_set_ie_cb(void *ctx, struct wpabuf *beacon_ie,
 158                                  struct wpabuf *probe_resp_ie)
 159 {
 160         struct hostapd_data *hapd = ctx;
 161         wpabuf_free(hapd->wps_beacon_ie);
 162         hapd->wps_beacon_ie = beacon_ie;
 163         wpabuf_free(hapd->wps_probe_resp_ie);
 164         hapd->wps_probe_resp_ie = probe_resp_ie;
 165         if (hapd->beacon_set_done)
 166                 ieee802_11_set_beacon(hapd);
 167         return hostapd_set_ap_wps_ie(hapd);
 168 }
 169
 170
 171 static void hostapd_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
 172                                       const struct wps_device_data *dev)
 173 {
 174         struct hostapd_data *hapd = ctx;
 175         char uuid[40], txt[400];
 176         int len;
 177         char devtype[WPS_DEV_TYPE_BUFSIZE];
 178         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 179                 return;
 180         wpa_printf(MSG_DEBUG, "WPS: PIN needed for E-UUID %s", uuid);
 181         len = os_snprintf(txt, sizeof(txt), WPS_EVENT_PIN_NEEDED
 182                           "%s " MACSTR " [%s|%s|%s|%s|%s|%s]",
 183                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
 184                           dev->manufacturer, dev->model_name,
 185                           dev->model_number, dev->serial_number,
 186                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 187                                                sizeof(devtype)));
 188         if (!os_snprintf_error(sizeof(txt), len))
 189                 wpa_msg(hapd->msg_ctx, MSG_INFO, "%s", txt);
 190
 191         if (hapd->conf->wps_pin_requests) {
 192                 FILE *f;
 193                 struct os_time t;
 194                 f = fopen(hapd->conf->wps_pin_requests, "a");
 195                 if (f == NULL)
 196                         return;
 197                 os_get_time(&t);
 198                 fprintf(f, "%ld\t%s\t" MACSTR "\t%s\t%s\t%s\t%s\t%s"
 199                         "\t%s\n",
 200                         t.sec, uuid, MAC2STR(dev->mac_addr), dev->device_name,
 201                         dev->manufacturer, dev->model_name, dev->model_number,
 202                         dev->serial_number,
 203                         wps_dev_type_bin2str(dev->pri_dev_type, devtype,
 204                                              sizeof(devtype)));
 205                 fclose(f);
 206         }
 207 }
 208
 209
 210 struct wps_stop_reg_data {
 211         struct hostapd_data *current_hapd;
 212         const u8 *uuid_e;
 213         const u8 *dev_pw;
 214         size_t dev_pw_len;
 215 };
 216
 217 static int wps_stop_registrar(struct hostapd_data *hapd, void *ctx)
 218 {
 219         struct wps_stop_reg_data *data = ctx;
 220         if (hapd != data->current_hapd && hapd->wps != NULL)
 221                 wps_registrar_complete(hapd->wps->registrar, data->uuid_e,
 222                                        data->dev_pw, data->dev_pw_len);
 223         return 0;
 224 }
 225
 226
 227 static void hostapd_wps_reg_success_cb(void *ctx, const u8 *mac_addr,
 228                                        const u8 *uuid_e, const u8 *dev_pw,
 229                                        size_t dev_pw_len)
 230 {
 231         struct hostapd_data *hapd = ctx;
 232         char uuid[40];
 233         struct wps_stop_reg_data data;
 234         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 235                 return;
 236         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_REG_SUCCESS MACSTR " %s",
 237                 MAC2STR(mac_addr), uuid);
 238         if (hapd->wps_reg_success_cb)
 239                 hapd->wps_reg_success_cb(hapd->wps_reg_success_cb_ctx,
 240                                          mac_addr, uuid_e);
 241         data.current_hapd = hapd;
 242         data.uuid_e = uuid_e;
 243         data.dev_pw = dev_pw;
 244         data.dev_pw_len = dev_pw_len;
 245         hostapd_wps_for_each(hapd, wps_stop_registrar, &data);
 246 }
 247
 248
 249 static void hostapd_wps_enrollee_seen_cb(void *ctx, const u8 *addr,
 250                                          const u8 *uuid_e,
 251                                          const u8 *pri_dev_type,
 252                                          u16 config_methods,
 253                                          u16 dev_password_id, u8 request_type,
 254                                          const char *dev_name)
 255 {
 256         struct hostapd_data *hapd = ctx;
 257         char uuid[40];
 258         char devtype[WPS_DEV_TYPE_BUFSIZE];
 259         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
 260                 return;
 261         if (dev_name == NULL)
 262                 dev_name = "";
 263         wpa_msg_ctrl(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ENROLLEE_SEEN MACSTR
 264                      " %s %s 0x%x %u %u [%s]",
 265                      MAC2STR(addr), uuid,
 266                      wps_dev_type_bin2str(pri_dev_type, devtype,
 267                                           sizeof(devtype)),
 268                      config_methods, dev_password_id, request_type, dev_name);
 269 }
 270
 271
 272 static int str_starts(const char *str, const char *start)
 273 {
 274         return os_strncmp(str, start, os_strlen(start)) == 0;
 275 }
 276
 277
 278 static void wps_reload_config(void *eloop_data, void *user_ctx)
 279 {
 280         struct hostapd_iface *iface = eloop_data;
 281
 282         wpa_printf(MSG_DEBUG, "WPS: Reload configuration data");
 283         if (iface->interfaces == NULL ||
 284             iface->interfaces->reload_config(iface) < 0) {
 285                 wpa_printf(MSG_WARNING, "WPS: Failed to reload the updated "
 286                            "configuration");
 287         }
 288 }
 289
 290
 291 void hostapd_wps_eap_completed(struct hostapd_data *hapd)
 292 {
 293         /*
 294          * Reduce race condition of the station trying to reconnect immediately
 295          * after AP reconfiguration through WPS by rescheduling the reload
 296          * timeout to happen after EAP completion rather than the originally
 297          * scheduled 100 ms after new configuration became known.
 298          */
 299         if (eloop_deplete_timeout(0, 0, wps_reload_config, hapd->iface, NULL) ==
 300             1)
 301                 wpa_printf(MSG_DEBUG, "WPS: Reschedule immediate configuration reload");
 302 }
 303
 304
 305 static void hapd_new_ap_event(struct hostapd_data *hapd, const u8 *attr,
 306                               size_t attr_len)
 307 {
 308         size_t blen = attr_len * 2 + 1;
 309         char *buf = os_malloc(blen);
 310         if (buf) {
 311                 wpa_snprintf_hex(buf, blen, attr, attr_len);
 312                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 313                         WPS_EVENT_NEW_AP_SETTINGS "%s", buf);
 314                 os_free(buf);
 315         }
 316 }
 317
 318
 319 static int hapd_wps_reconfig_in_memory(struct hostapd_data *hapd,
 320                                        const struct wps_credential *cred)
 321 {
 322         struct hostapd_bss_config *bss = hapd->conf;
 323
 324         wpa_printf(MSG_DEBUG, "WPS: Updating in-memory configuration");
 325
 326         bss->wps_state = 2;
 327         if (cred->ssid_len <= HOSTAPD_MAX_SSID_LEN) {
 328                 os_memcpy(bss->ssid.ssid, cred->ssid, cred->ssid_len);
 329                 bss->ssid.ssid_len = cred->ssid_len;
 330                 bss->ssid.ssid_set = 1;
 331         }
 332
 333         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 334             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 335                 bss->wpa = 3;
 336         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 337                 bss->wpa = 2;
 338         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 339                 bss->wpa = 1;
 340         else
 341                 bss->wpa = 0;
 342
 343         if (bss->wpa) {
 344                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA))
 345                         bss->wpa_key_mgmt = WPA_KEY_MGMT_IEEE8021X;
 346                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 347                         bss->wpa_key_mgmt = WPA_KEY_MGMT_PSK;
 348
 349                 bss->wpa_pairwise = 0;
 350                 if (cred->encr_type & WPS_ENCR_AES)
 351                         bss->wpa_pairwise |= WPA_CIPHER_CCMP;
 352                 if (cred->encr_type & WPS_ENCR_TKIP)
 353                         bss->wpa_pairwise |= WPA_CIPHER_TKIP;
 354                 bss->rsn_pairwise = bss->wpa_pairwise;
 355                 bss->wpa_group = wpa_select_ap_group_cipher(bss->wpa,
 356                                                             bss->wpa_pairwise,
 357                                                             bss->rsn_pairwise);
 358
 359                 if (cred->key_len >= 8 && cred->key_len < 64) {
 360                         os_free(bss->ssid.wpa_passphrase);
 361                         bss->ssid.wpa_passphrase = os_zalloc(cred->key_len + 1);
 362                         if (bss->ssid.wpa_passphrase)
 363                                 os_memcpy(bss->ssid.wpa_passphrase, cred->key,
 364                                           cred->key_len);
 365                         hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
 366                 } else if (cred->key_len == 64) {
 367                         hostapd_config_clear_wpa_psk(&bss->ssid.wpa_psk);
 368                         bss->ssid.wpa_psk =
 369                                 os_zalloc(sizeof(struct hostapd_wpa_psk));
 370                         if (bss->ssid.wpa_psk &&
 371                             hexstr2bin((const char *) cred->key,
 372                                        bss->ssid.wpa_psk->psk, PMK_LEN) == 0) {
 373                                 bss->ssid.wpa_psk->group = 1;
 374                                 os_free(bss->ssid.wpa_passphrase);
 375                                 bss->ssid.wpa_passphrase = NULL;
 376                         }
 377                 }
 378                 bss->auth_algs = 1;
 379         } else {
 380                 /*
 381                  * WPS 2.0 does not allow WEP to be configured, so no need to
 382                  * process that option here either.
 383                  */
 384                 bss->auth_algs = 1;
 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         hapd->wps->ap_encr_type = cred->encr_type;
 446         hapd->wps->ap_auth_type = cred->auth_type;
 447         if (cred->key_len == 0) {
 448                 os_free(hapd->wps->network_key);
 449                 hapd->wps->network_key = NULL;
 450                 hapd->wps->network_key_len = 0;
 451         } else {
 452                 if (hapd->wps->network_key == NULL ||
 453                     hapd->wps->network_key_len < cred->key_len) {
 454                         hapd->wps->network_key_len = 0;
 455                         os_free(hapd->wps->network_key);
 456                         hapd->wps->network_key = os_malloc(cred->key_len);
 457                         if (hapd->wps->network_key == NULL)
 458                                 return -1;
 459                 }
 460                 hapd->wps->network_key_len = cred->key_len;
 461                 os_memcpy(hapd->wps->network_key, cred->key, cred->key_len);
 462         }
 463         hapd->wps->wps_state = WPS_STATE_CONFIGURED;
 464
 465         if (hapd->iface->config_fname == NULL)
 466                 return hapd_wps_reconfig_in_memory(hapd, cred);
 467         len = os_strlen(hapd->iface->config_fname) + 5;
 468         tmp_fname = os_malloc(len);
 469         if (tmp_fname == NULL)
 470                 return -1;
 471         os_snprintf(tmp_fname, len, "%s-new", hapd->iface->config_fname);
 472
 473         oconf = fopen(hapd->iface->config_fname, "r");
 474         if (oconf == NULL) {
 475                 wpa_printf(MSG_WARNING, "WPS: Could not open current "
 476                            "configuration file");
 477                 os_free(tmp_fname);
 478                 return -1;
 479         }
 480
 481         nconf = fopen(tmp_fname, "w");
 482         if (nconf == NULL) {
 483                 wpa_printf(MSG_WARNING, "WPS: Could not write updated "
 484                            "configuration file");
 485                 os_free(tmp_fname);
 486                 fclose(oconf);
 487                 return -1;
 488         }
 489
 490         fprintf(nconf, "# WPS configuration - START\n");
 491
 492         fprintf(nconf, "wps_state=2\n");
 493
 494         if (is_hex(cred->ssid, cred->ssid_len)) {
 495                 fprintf(nconf, "ssid2=");
 496                 for (i = 0; i < cred->ssid_len; i++)
 497                         fprintf(nconf, "%02x", cred->ssid[i]);
 498                 fprintf(nconf, "\n");
 499         } else {
 500                 fprintf(nconf, "ssid=");
 501                 for (i = 0; i < cred->ssid_len; i++)
 502                         fputc(cred->ssid[i], nconf);
 503                 fprintf(nconf, "\n");
 504         }
 505
 506         if ((cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK)) &&
 507             (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK)))
 508                 wpa = 3;
 509         else if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA2PSK))
 510                 wpa = 2;
 511         else if (cred->auth_type & (WPS_AUTH_WPA | WPS_AUTH_WPAPSK))
 512                 wpa = 1;
 513         else
 514                 wpa = 0;
 515
 516         if (wpa) {
 517                 char *prefix;
 518                 fprintf(nconf, "wpa=%d\n", wpa);
 519
 520                 fprintf(nconf, "wpa_key_mgmt=");
 521                 prefix = "";
 522                 if (cred->auth_type & (WPS_AUTH_WPA2 | WPS_AUTH_WPA)) {
 523                         fprintf(nconf, "WPA-EAP");
 524                         prefix = " ";
 525                 }
 526                 if (cred->auth_type & (WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK))
 527                         fprintf(nconf, "%sWPA-PSK", prefix);
 528                 fprintf(nconf, "\n");
 529
 530                 fprintf(nconf, "wpa_pairwise=");
 531                 prefix = "";
 532                 if (cred->encr_type & WPS_ENCR_AES) {
 533                         fprintf(nconf, "CCMP");
 534                         prefix = " ";
 535                 }
 536                 if (cred->encr_type & WPS_ENCR_TKIP) {
 537                         fprintf(nconf, "%sTKIP", prefix);
 538                 }
 539                 fprintf(nconf, "\n");
 540
 541                 if (cred->key_len >= 8 && cred->key_len < 64) {
 542                         fprintf(nconf, "wpa_passphrase=");
 543                         for (i = 0; i < cred->key_len; i++)
 544                                 fputc(cred->key[i], nconf);
 545                         fprintf(nconf, "\n");
 546                 } else if (cred->key_len == 64) {
 547                         fprintf(nconf, "wpa_psk=");
 548                         for (i = 0; i < cred->key_len; i++)
 549                                 fputc(cred->key[i], nconf);
 550                         fprintf(nconf, "\n");
 551                 } else {
 552                         wpa_printf(MSG_WARNING, "WPS: Invalid key length %lu "
 553                                    "for WPA/WPA2",
 554                                    (unsigned long) cred->key_len);
 555                 }
 556
 557                 fprintf(nconf, "auth_algs=1\n");
 558         } else {
 559                 /*
 560                  * WPS 2.0 does not allow WEP to be configured, so no need to
 561                  * process that option here either.
 562                  */
 563                 fprintf(nconf, "auth_algs=1\n");
 564         }
 565
 566         fprintf(nconf, "# WPS configuration - END\n");
 567
 568         multi_bss = 0;
 569         while (fgets(buf, sizeof(buf), oconf)) {
 570                 if (os_strncmp(buf, "bss=", 4) == 0)
 571                         multi_bss = 1;
 572                 if (!multi_bss &&
 573                     (str_starts(buf, "ssid=") ||
 574                      str_starts(buf, "ssid2=") ||
 575                      str_starts(buf, "auth_algs=") ||
 576                      str_starts(buf, "wep_default_key=") ||
 577                      str_starts(buf, "wep_key") ||
 578                      str_starts(buf, "wps_state=") ||
 579                      str_starts(buf, "wpa=") ||
 580                      str_starts(buf, "wpa_psk=") ||
 581                      str_starts(buf, "wpa_pairwise=") ||
 582                      str_starts(buf, "rsn_pairwise=") ||
 583                      str_starts(buf, "wpa_key_mgmt=") ||
 584                      str_starts(buf, "wpa_passphrase="))) {
 585                         fprintf(nconf, "#WPS# %s", buf);
 586                 } else
 587                         fprintf(nconf, "%s", buf);
 588         }
 589
 590         fclose(nconf);
 591         fclose(oconf);
 592
 593         if (rename(tmp_fname, hapd->iface->config_fname) < 0) {
 594                 wpa_printf(MSG_WARNING, "WPS: Failed to rename the updated "
 595                            "configuration file: %s", strerror(errno));
 596                 os_free(tmp_fname);
 597                 return -1;
 598         }
 599
 600         os_free(tmp_fname);
 601
 602         /* Schedule configuration reload after short period of time to allow
 603          * EAP-WSC to be finished.
 604          */
 605         eloop_register_timeout(0, 100000, wps_reload_config, hapd->iface,
 606                                NULL);
 607
 608         wpa_printf(MSG_DEBUG, "WPS: AP configuration updated");
 609
 610         return 0;
 611 }
 612
 613
 614 static int hostapd_wps_cred_cb(void *ctx, const struct wps_credential *cred)
 615 {
 616         struct hostapd_data *hapd = ctx;
 617         return hostapd_wps_for_each(hapd, hapd_wps_cred_cb, (void *) cred);
 618 }
 619
 620
 621 static void hostapd_wps_reenable_ap_pin(void *eloop_data, void *user_ctx)
 622 {
 623         struct hostapd_data *hapd = eloop_data;
 624
 625         if (hapd->conf->ap_setup_locked)
 626                 return;
 627         if (hapd->ap_pin_failures_consecutive >= 10)
 628                 return;
 629
 630         wpa_printf(MSG_DEBUG, "WPS: Re-enable AP PIN");
 631         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
 632         hapd->wps->ap_setup_locked = 0;
 633         wps_registrar_update_ie(hapd->wps->registrar);
 634 }
 635
 636
 637 static int wps_pwd_auth_fail(struct hostapd_data *hapd, void *ctx)
 638 {
 639         struct wps_event_pwd_auth_fail *data = ctx;
 640
 641         if (!data->enrollee || hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 642                 return 0;
 643
 644         /*
 645          * Registrar failed to prove its knowledge of the AP PIN. Lock AP setup
 646          * for some time if this happens multiple times to slow down brute
 647          * force attacks.
 648          */
 649         hapd->ap_pin_failures++;
 650         hapd->ap_pin_failures_consecutive++;
 651         wpa_printf(MSG_DEBUG, "WPS: AP PIN authentication failure number %u "
 652                    "(%u consecutive)",
 653                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 654         if (hapd->ap_pin_failures < 3)
 655                 return 0;
 656
 657         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_LOCKED);
 658         hapd->wps->ap_setup_locked = 1;
 659
 660         wps_registrar_update_ie(hapd->wps->registrar);
 661
 662         if (!hapd->conf->ap_setup_locked &&
 663             hapd->ap_pin_failures_consecutive >= 10) {
 664                 /*
 665                  * In indefinite lockdown - disable automatic AP PIN
 666                  * reenablement.
 667                  */
 668                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 669                 wpa_printf(MSG_DEBUG, "WPS: AP PIN disabled indefinitely");
 670         } else if (!hapd->conf->ap_setup_locked) {
 671                 if (hapd->ap_pin_lockout_time == 0)
 672                         hapd->ap_pin_lockout_time = 60;
 673                 else if (hapd->ap_pin_lockout_time < 365 * 24 * 60 * 60 &&
 674                          (hapd->ap_pin_failures % 3) == 0)
 675                         hapd->ap_pin_lockout_time *= 2;
 676
 677                 wpa_printf(MSG_DEBUG, "WPS: Disable AP PIN for %u seconds",
 678                            hapd->ap_pin_lockout_time);
 679                 eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
 680                 eloop_register_timeout(hapd->ap_pin_lockout_time, 0,
 681                                        hostapd_wps_reenable_ap_pin, hapd,
 682                                        NULL);
 683         }
 684
 685         return 0;
 686 }
 687
 688
 689 static void hostapd_pwd_auth_fail(struct hostapd_data *hapd,
 690                                   struct wps_event_pwd_auth_fail *data)
 691 {
 692         /* Update WPS Status - Authentication Failure */
 693         wpa_printf(MSG_DEBUG, "WPS: Authentication failure update");
 694         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 695         hapd->wps_stats.failure_reason = WPS_EI_AUTH_FAILURE;
 696         os_memcpy(hapd->wps_stats.peer_addr, data->peer_macaddr, ETH_ALEN);
 697
 698         hostapd_wps_for_each(hapd, wps_pwd_auth_fail, data);
 699 }
 700
 701
 702 static int wps_ap_pin_success(struct hostapd_data *hapd, void *ctx)
 703 {
 704         if (hapd->conf->ap_pin == NULL || hapd->wps == NULL)
 705                 return 0;
 706
 707         if (hapd->ap_pin_failures_consecutive == 0)
 708                 return 0;
 709
 710         wpa_printf(MSG_DEBUG, "WPS: Clear consecutive AP PIN failure counter "
 711                    "- total validation failures %u (%u consecutive)",
 712                    hapd->ap_pin_failures, hapd->ap_pin_failures_consecutive);
 713         hapd->ap_pin_failures_consecutive = 0;
 714
 715         return 0;
 716 }
 717
 718
 719 static void hostapd_wps_ap_pin_success(struct hostapd_data *hapd)
 720 {
 721         hostapd_wps_for_each(hapd, wps_ap_pin_success, NULL);
 722 }
 723
 724
 725 static void hostapd_wps_event_pbc_overlap(struct hostapd_data *hapd)
 726 {
 727         /* Update WPS Status - PBC Overlap */
 728         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_OVERLAP;
 729 }
 730
 731
 732 static void hostapd_wps_event_pbc_timeout(struct hostapd_data *hapd)
 733 {
 734         /* Update WPS PBC Status:PBC Timeout */
 735         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_TIMEOUT;
 736 }
 737
 738
 739 static void hostapd_wps_event_pbc_active(struct hostapd_data *hapd)
 740 {
 741         /* Update WPS PBC status - Active */
 742         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_ACTIVE;
 743 }
 744
 745
 746 static void hostapd_wps_event_pbc_disable(struct hostapd_data *hapd)
 747 {
 748         /* Update WPS PBC status - Active */
 749         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 750 }
 751
 752
 753 static void hostapd_wps_event_success(struct hostapd_data *hapd,
 754                                       struct wps_event_success *success)
 755 {
 756         /* Update WPS status - Success */
 757         hapd->wps_stats.pbc_status = WPS_PBC_STATUS_DISABLE;
 758         hapd->wps_stats.status = WPS_STATUS_SUCCESS;
 759         os_memcpy(hapd->wps_stats.peer_addr, success->peer_macaddr, ETH_ALEN);
 760 }
 761
 762
 763 static void hostapd_wps_event_fail(struct hostapd_data *hapd,
 764                                    struct wps_event_fail *fail)
 765 {
 766         /* Update WPS status - Failure */
 767         hapd->wps_stats.status = WPS_STATUS_FAILURE;
 768         os_memcpy(hapd->wps_stats.peer_addr, fail->peer_macaddr, ETH_ALEN);
 769
 770         hapd->wps_stats.failure_reason = fail->error_indication;
 771
 772         if (fail->error_indication > 0 &&
 773             fail->error_indication < NUM_WPS_EI_VALUES) {
 774                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 775                         WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)",
 776                         fail->msg, fail->config_error, fail->error_indication,
 777                         wps_ei_str(fail->error_indication));
 778         } else {
 779                 wpa_msg(hapd->msg_ctx, MSG_INFO,
 780                         WPS_EVENT_FAIL "msg=%d config_error=%d",
 781                         fail->msg, fail->config_error);
 782         }
 783 }
 784
 785
 786 static void hostapd_wps_event_cb(void *ctx, enum wps_event event,
 787                                  union wps_event_data *data)
 788 {
 789         struct hostapd_data *hapd = ctx;
 790
 791         switch (event) {
 792         case WPS_EV_M2D:
 793                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_M2D);
 794                 break;
 795         case WPS_EV_FAIL:
 796                 hostapd_wps_event_fail(hapd, &data->fail);
 797                 break;
 798         case WPS_EV_SUCCESS:
 799                 hostapd_wps_event_success(hapd, &data->success);
 800                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_SUCCESS);
 801                 break;
 802         case WPS_EV_PWD_AUTH_FAIL:
 803                 hostapd_pwd_auth_fail(hapd, &data->pwd_auth_fail);
 804                 break;
 805         case WPS_EV_PBC_OVERLAP:
 806                 hostapd_wps_event_pbc_overlap(hapd);
 807                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_OVERLAP);
 808                 break;
 809         case WPS_EV_PBC_TIMEOUT:
 810                 hostapd_wps_event_pbc_timeout(hapd);
 811                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_TIMEOUT);
 812                 break;
 813         case WPS_EV_PBC_ACTIVE:
 814                 hostapd_wps_event_pbc_active(hapd);
 815                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_ACTIVE);
 816                 break;
 817         case WPS_EV_PBC_DISABLE:
 818                 hostapd_wps_event_pbc_disable(hapd);
 819                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_DISABLE);
 820                 break;
 821         case WPS_EV_ER_AP_ADD:
 822                 break;
 823         case WPS_EV_ER_AP_REMOVE:
 824                 break;
 825         case WPS_EV_ER_ENROLLEE_ADD:
 826                 break;
 827         case WPS_EV_ER_ENROLLEE_REMOVE:
 828                 break;
 829         case WPS_EV_ER_AP_SETTINGS:
 830                 break;
 831         case WPS_EV_ER_SET_SELECTED_REGISTRAR:
 832                 break;
 833         case WPS_EV_AP_PIN_SUCCESS:
 834                 hostapd_wps_ap_pin_success(hapd);
 835                 break;
 836         }
 837         if (hapd->wps_event_cb)
 838                 hapd->wps_event_cb(hapd->wps_event_cb_ctx, event, data);
 839 }
 840
 841
 842 static int hostapd_wps_rf_band_cb(void *ctx)
 843 {
 844         struct hostapd_data *hapd = ctx;
 845
 846         return hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
 847                 WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
 848 }
 849
 850
 851 static void hostapd_wps_clear_ies(struct hostapd_data *hapd, int deinit_only)
 852 {
 853         wpabuf_free(hapd->wps_beacon_ie);
 854         hapd->wps_beacon_ie = NULL;
 855
 856         wpabuf_free(hapd->wps_probe_resp_ie);
 857         hapd->wps_probe_resp_ie = NULL;
 858
 859         if (deinit_only)
 860                 return;
 861
 862         hostapd_set_ap_wps_ie(hapd);
 863 }
 864
 865
 866 static int get_uuid_cb(struct hostapd_iface *iface, void *ctx)
 867 {
 868         const u8 **uuid = ctx;
 869         size_t j;
 870
 871         if (iface == NULL)
 872                 return 0;
 873         for (j = 0; j < iface->num_bss; j++) {
 874                 struct hostapd_data *hapd = iface->bss[j];
 875                 if (hapd->wps && !hapd->conf->wps_independent &&
 876                     !is_nil_uuid(hapd->wps->uuid)) {
 877                         *uuid = hapd->wps->uuid;
 878                         return 1;
 879                 }
 880         }
 881
 882         return 0;
 883 }
 884
 885
 886 static const u8 * get_own_uuid(struct hostapd_iface *iface)
 887 {
 888         const u8 *uuid;
 889         if (iface->interfaces == NULL ||
 890             iface->interfaces->for_each_interface == NULL)
 891                 return NULL;
 892         uuid = NULL;
 893         iface->interfaces->for_each_interface(iface->interfaces, get_uuid_cb,
 894                                               &uuid);
 895         return uuid;
 896 }
 897
 898
 899 static int count_interface_cb(struct hostapd_iface *iface, void *ctx)
 900 {
 901         int *count= ctx;
 902         (*count)++;
 903         return 0;
 904 }
 905
 906
 907 static int interface_count(struct hostapd_iface *iface)
 908 {
 909         int count = 0;
 910         if (iface->interfaces == NULL ||
 911             iface->interfaces->for_each_interface == NULL)
 912                 return 0;
 913         iface->interfaces->for_each_interface(iface->interfaces,
 914                                               count_interface_cb, &count);
 915         return count;
 916 }
 917
 918
 919 static int hostapd_wps_set_vendor_ext(struct hostapd_data *hapd,
 920                                       struct wps_context *wps)
 921 {
 922         int i;
 923
 924         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++) {
 925                 wpabuf_free(wps->dev.vendor_ext[i]);
 926                 wps->dev.vendor_ext[i] = NULL;
 927
 928                 if (hapd->conf->wps_vendor_ext[i] == NULL)
 929                         continue;
 930
 931                 wps->dev.vendor_ext[i] =
 932                         wpabuf_dup(hapd->conf->wps_vendor_ext[i]);
 933                 if (wps->dev.vendor_ext[i] == NULL) {
 934                         while (--i >= 0)
 935                                 wpabuf_free(wps->dev.vendor_ext[i]);
 936                         return -1;
 937                 }
 938         }
 939
 940         return 0;
 941 }
 942
 943
 944 static void hostapd_free_wps(struct wps_context *wps)
 945 {
 946         int i;
 947
 948         for (i = 0; i < MAX_WPS_VENDOR_EXTENSIONS; i++)
 949                 wpabuf_free(wps->dev.vendor_ext[i]);
 950         wps_device_data_free(&wps->dev);
 951         os_free(wps->network_key);
 952         hostapd_wps_nfc_clear(wps);
 953         wpabuf_free(wps->dh_pubkey);
 954         wpabuf_free(wps->dh_privkey);
 955         os_free(wps);
 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, 0);
 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         if ((wps->config_methods &
1016              (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY |
1017               WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) {
1018                 wpa_printf(MSG_INFO, "WPS: Converting display to "
1019                            "virtual_display for WPS 2.0 compliance");
1020                 wps->config_methods |= WPS_CONFIG_VIRT_DISPLAY;
1021         }
1022         if ((wps->config_methods &
1023              (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON |
1024               WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) {
1025                 wpa_printf(MSG_INFO, "WPS: Converting push_button to "
1026                            "virtual_push_button for WPS 2.0 compliance");
1027                 wps->config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON;
1028         }
1029         os_memcpy(wps->dev.pri_dev_type, hapd->conf->device_type,
1030                   WPS_DEV_TYPE_LEN);
1031
1032         if (hostapd_wps_set_vendor_ext(hapd, wps) < 0)
1033                 goto fail;
1034
1035         wps->dev.os_version = WPA_GET_BE32(hapd->conf->os_version);
1036
1037         if (conf->wps_rf_bands) {
1038                 wps->dev.rf_bands = conf->wps_rf_bands;
1039         } else {
1040                 wps->dev.rf_bands =
1041                         hapd->iconf->hw_mode == HOSTAPD_MODE_IEEE80211A ?
1042                         WPS_RF_50GHZ : WPS_RF_24GHZ; /* FIX: dualband AP */
1043         }
1044
1045         if (conf->wpa & WPA_PROTO_RSN) {
1046                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1047                         wps->auth_types |= WPS_AUTH_WPA2PSK;
1048                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1049                         wps->auth_types |= WPS_AUTH_WPA2;
1050
1051                 if (conf->rsn_pairwise & (WPA_CIPHER_CCMP | WPA_CIPHER_GCMP))
1052                         wps->encr_types |= WPS_ENCR_AES;
1053                 if (conf->rsn_pairwise & WPA_CIPHER_TKIP)
1054                         wps->encr_types |= WPS_ENCR_TKIP;
1055         }
1056
1057         if (conf->wpa & WPA_PROTO_WPA) {
1058                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_PSK)
1059                         wps->auth_types |= WPS_AUTH_WPAPSK;
1060                 if (conf->wpa_key_mgmt & WPA_KEY_MGMT_IEEE8021X)
1061                         wps->auth_types |= WPS_AUTH_WPA;
1062
1063                 if (conf->wpa_pairwise & WPA_CIPHER_CCMP)
1064                         wps->encr_types |= WPS_ENCR_AES;
1065                 if (conf->wpa_pairwise & WPA_CIPHER_TKIP)
1066                         wps->encr_types |= WPS_ENCR_TKIP;
1067         }
1068
1069         if (conf->ssid.security_policy == SECURITY_PLAINTEXT) {
1070                 wps->encr_types |= WPS_ENCR_NONE;
1071                 wps->auth_types |= WPS_AUTH_OPEN;
1072         }
1073
1074         if (conf->ssid.wpa_psk_file) {
1075                 /* Use per-device PSKs */
1076         } else if (conf->ssid.wpa_passphrase) {
1077                 wps->network_key = (u8 *) os_strdup(conf->ssid.wpa_passphrase);
1078                 wps->network_key_len = os_strlen(conf->ssid.wpa_passphrase);
1079         } else if (conf->ssid.wpa_psk) {
1080                 wps->network_key = os_malloc(2 * PMK_LEN + 1);
1081                 if (wps->network_key == NULL)
1082                         goto fail;
1083                 wpa_snprintf_hex((char *) wps->network_key, 2 * PMK_LEN + 1,
1084                                  conf->ssid.wpa_psk->psk, PMK_LEN);
1085                 wps->network_key_len = 2 * PMK_LEN;
1086         } else if (conf->ssid.wep.keys_set && conf->ssid.wep.key[0]) {
1087                 wps->network_key = os_malloc(conf->ssid.wep.len[0]);
1088                 if (wps->network_key == NULL)
1089                         goto fail;
1090                 os_memcpy(wps->network_key, conf->ssid.wep.key[0],
1091                           conf->ssid.wep.len[0]);
1092                 wps->network_key_len = conf->ssid.wep.len[0];
1093         }
1094
1095         if (conf->ssid.wpa_psk) {
1096                 os_memcpy(wps->psk, conf->ssid.wpa_psk->psk, PMK_LEN);
1097                 wps->psk_set = 1;
1098         }
1099
1100         wps->ap_auth_type = wps->auth_types;
1101         wps->ap_encr_type = wps->encr_types;
1102         if (conf->wps_state == WPS_STATE_NOT_CONFIGURED) {
1103                 /* Override parameters to enable security by default */
1104                 wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
1105                 wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
1106         }
1107
1108         wps->ap_settings = conf->ap_settings;
1109         wps->ap_settings_len = conf->ap_settings_len;
1110
1111         cfg.new_psk_cb = hostapd_wps_new_psk_cb;
1112         cfg.set_ie_cb = hostapd_wps_set_ie_cb;
1113         cfg.pin_needed_cb = hostapd_wps_pin_needed_cb;
1114         cfg.reg_success_cb = hostapd_wps_reg_success_cb;
1115         cfg.enrollee_seen_cb = hostapd_wps_enrollee_seen_cb;
1116         cfg.cb_ctx = hapd;
1117         cfg.skip_cred_build = conf->skip_cred_build;
1118         cfg.extra_cred = conf->extra_cred;
1119         cfg.extra_cred_len = conf->extra_cred_len;
1120         cfg.disable_auto_conf = (hapd->conf->wps_cred_processing == 1) &&
1121                 conf->skip_cred_build;
1122         if (conf->ssid.security_policy == SECURITY_STATIC_WEP)
1123                 cfg.static_wep_only = 1;
1124         cfg.dualband = interface_count(hapd->iface) > 1;
1125         if ((wps->dev.rf_bands & (WPS_RF_50GHZ | WPS_RF_24GHZ)) ==
1126             (WPS_RF_50GHZ | WPS_RF_24GHZ))
1127                 cfg.dualband = 1;
1128         if (cfg.dualband)
1129                 wpa_printf(MSG_DEBUG, "WPS: Dualband AP");
1130         cfg.force_per_enrollee_psk = conf->force_per_enrollee_psk;
1131
1132         wps->registrar = wps_registrar_init(wps, &cfg);
1133         if (wps->registrar == NULL) {
1134                 wpa_printf(MSG_ERROR, "Failed to initialize WPS Registrar");
1135                 goto fail;
1136         }
1137
1138 #ifdef CONFIG_WPS_UPNP
1139         wps->friendly_name = hapd->conf->friendly_name;
1140         wps->manufacturer_url = hapd->conf->manufacturer_url;
1141         wps->model_description = hapd->conf->model_description;
1142         wps->model_url = hapd->conf->model_url;
1143         wps->upc = hapd->conf->upc;
1144 #endif /* CONFIG_WPS_UPNP */
1145
1146         hostapd_register_probereq_cb(hapd, hostapd_wps_probe_req_rx, hapd);
1147
1148         hapd->wps = wps;
1149
1150         return 0;
1151
1152 fail:
1153         hostapd_free_wps(wps);
1154         return -1;
1155 }
1156
1157
1158 int hostapd_init_wps_complete(struct hostapd_data *hapd)
1159 {
1160         struct wps_context *wps = hapd->wps;
1161
1162         if (wps == NULL)
1163                 return 0;
1164
1165 #ifdef CONFIG_WPS_UPNP
1166         if (hostapd_wps_upnp_init(hapd, wps) < 0) {
1167                 wpa_printf(MSG_ERROR, "Failed to initialize WPS UPnP");
1168                 wps_registrar_deinit(wps->registrar);
1169                 hostapd_free_wps(wps);
1170                 hapd->wps = NULL;
1171                 return -1;
1172         }
1173 #endif /* CONFIG_WPS_UPNP */
1174
1175         return 0;
1176 }
1177
1178
1179 static void hostapd_wps_nfc_clear(struct wps_context *wps)
1180 {
1181 #ifdef CONFIG_WPS_NFC
1182         wpa_printf(MSG_DEBUG, "WPS: Clear NFC Tag context %p", wps);
1183         wps->ap_nfc_dev_pw_id = 0;
1184         wpabuf_free(wps->ap_nfc_dh_pubkey);
1185         wps->ap_nfc_dh_pubkey = NULL;
1186         wpabuf_free(wps->ap_nfc_dh_privkey);
1187         wps->ap_nfc_dh_privkey = NULL;
1188         wpabuf_free(wps->ap_nfc_dev_pw);
1189         wps->ap_nfc_dev_pw = NULL;
1190 #endif /* CONFIG_WPS_NFC */
1191 }
1192
1193
1194 void hostapd_deinit_wps(struct hostapd_data *hapd)
1195 {
1196         eloop_cancel_timeout(hostapd_wps_reenable_ap_pin, hapd, NULL);
1197         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1198         eloop_cancel_timeout(wps_reload_config, hapd->iface, NULL);
1199         if (hapd->wps == NULL) {
1200                 hostapd_wps_clear_ies(hapd, 1);
1201                 return;
1202         }
1203 #ifdef CONFIG_WPS_UPNP
1204         hostapd_wps_upnp_deinit(hapd);
1205 #endif /* CONFIG_WPS_UPNP */
1206         wps_registrar_deinit(hapd->wps->registrar);
1207         wps_free_pending_msgs(hapd->wps->upnp_msgs);
1208         hostapd_free_wps(hapd->wps);
1209         hapd->wps = NULL;
1210         hostapd_wps_clear_ies(hapd, 1);
1211 }
1212
1213
1214 void hostapd_update_wps(struct hostapd_data *hapd)
1215 {
1216         if (hapd->wps == NULL)
1217                 return;
1218
1219 #ifdef CONFIG_WPS_UPNP
1220         hapd->wps->friendly_name = hapd->conf->friendly_name;
1221         hapd->wps->manufacturer_url = hapd->conf->manufacturer_url;
1222         hapd->wps->model_description = hapd->conf->model_description;
1223         hapd->wps->model_url = hapd->conf->model_url;
1224         hapd->wps->upc = hapd->conf->upc;
1225 #endif /* CONFIG_WPS_UPNP */
1226
1227         hostapd_wps_set_vendor_ext(hapd, hapd->wps);
1228
1229         if (hapd->conf->wps_state)
1230                 wps_registrar_update_ie(hapd->wps->registrar);
1231         else
1232                 hostapd_deinit_wps(hapd);
1233 }
1234
1235
1236 struct wps_add_pin_data {
1237         const u8 *addr;
1238         const u8 *uuid;
1239         const u8 *pin;
1240         size_t pin_len;
1241         int timeout;
1242         int added;
1243 };
1244
1245
1246 static int wps_add_pin(struct hostapd_data *hapd, void *ctx)
1247 {
1248         struct wps_add_pin_data *data = ctx;
1249         int ret;
1250
1251         if (hapd->wps == NULL)
1252                 return 0;
1253         ret = wps_registrar_add_pin(hapd->wps->registrar, data->addr,
1254                                     data->uuid, data->pin, data->pin_len,
1255                                     data->timeout);
1256         if (ret == 0)
1257                 data->added++;
1258         return ret;
1259 }
1260
1261
1262 int hostapd_wps_add_pin(struct hostapd_data *hapd, const u8 *addr,
1263                         const char *uuid, const char *pin, int timeout)
1264 {
1265         u8 u[UUID_LEN];
1266         struct wps_add_pin_data data;
1267
1268         data.addr = addr;
1269         data.uuid = u;
1270         data.pin = (const u8 *) pin;
1271         data.pin_len = os_strlen(pin);
1272         data.timeout = timeout;
1273         data.added = 0;
1274
1275         if (os_strcmp(uuid, "any") == 0)
1276                 data.uuid = NULL;
1277         else {
1278                 if (uuid_str2bin(uuid, u))
1279                         return -1;
1280                 data.uuid = u;
1281         }
1282         if (hostapd_wps_for_each(hapd, wps_add_pin, &data) < 0)
1283                 return -1;
1284         return data.added ? 0 : -1;
1285 }
1286
1287
1288 static int wps_button_pushed(struct hostapd_data *hapd, void *ctx)
1289 {
1290         const u8 *p2p_dev_addr = ctx;
1291         if (hapd->wps == NULL)
1292                 return -1;
1293         return wps_registrar_button_pushed(hapd->wps->registrar, p2p_dev_addr);
1294 }
1295
1296
1297 int hostapd_wps_button_pushed(struct hostapd_data *hapd,
1298                               const u8 *p2p_dev_addr)
1299 {
1300         return hostapd_wps_for_each(hapd, wps_button_pushed,
1301                                     (void *) p2p_dev_addr);
1302 }
1303
1304
1305 static int wps_cancel(struct hostapd_data *hapd, void *ctx)
1306 {
1307         if (hapd->wps == NULL)
1308                 return -1;
1309
1310         wps_registrar_wps_cancel(hapd->wps->registrar);
1311         ap_for_each_sta(hapd, ap_sta_wps_cancel, NULL);
1312
1313         return 0;
1314 }
1315
1316
1317 int hostapd_wps_cancel(struct hostapd_data *hapd)
1318 {
1319         return hostapd_wps_for_each(hapd, wps_cancel, NULL);
1320 }
1321
1322
1323 static int hostapd_wps_probe_req_rx(void *ctx, const u8 *addr, const u8 *da,
1324                                     const u8 *bssid,
1325                                     const u8 *ie, size_t ie_len,
1326                                     int ssi_signal)
1327 {
1328         struct hostapd_data *hapd = ctx;
1329         struct wpabuf *wps_ie;
1330         struct ieee802_11_elems elems;
1331
1332         if (hapd->wps == NULL)
1333                 return 0;
1334
1335         if (ieee802_11_parse_elems(ie, ie_len, &elems, 0) == ParseFailed) {
1336                 wpa_printf(MSG_DEBUG, "WPS: Could not parse ProbeReq from "
1337                            MACSTR, MAC2STR(addr));
1338                 return 0;
1339         }
1340
1341         if (elems.ssid && elems.ssid_len > 0 &&
1342             (elems.ssid_len != hapd->conf->ssid.ssid_len ||
1343              os_memcmp(elems.ssid, hapd->conf->ssid.ssid, elems.ssid_len) !=
1344              0))
1345                 return 0; /* Not for us */
1346
1347         wps_ie = ieee802_11_vendor_ie_concat(ie, ie_len, WPS_DEV_OUI_WFA);
1348         if (wps_ie == NULL)
1349                 return 0;
1350         if (wps_validate_probe_req(wps_ie, addr) < 0) {
1351                 wpabuf_free(wps_ie);
1352                 return 0;
1353         }
1354
1355         if (wpabuf_len(wps_ie) > 0) {
1356                 int p2p_wildcard = 0;
1357 #ifdef CONFIG_P2P
1358                 if (elems.ssid && elems.ssid_len == P2P_WILDCARD_SSID_LEN &&
1359                     os_memcmp(elems.ssid, P2P_WILDCARD_SSID,
1360                               P2P_WILDCARD_SSID_LEN) == 0)
1361                         p2p_wildcard = 1;
1362 #endif /* CONFIG_P2P */
1363                 wps_registrar_probe_req_rx(hapd->wps->registrar, addr, wps_ie,
1364                                            p2p_wildcard);
1365 #ifdef CONFIG_WPS_UPNP
1366                 /* FIX: what exactly should be included in the WLANEvent?
1367                  * WPS attributes? Full ProbeReq frame? */
1368                 if (!p2p_wildcard)
1369                         upnp_wps_device_send_wlan_event(
1370                                 hapd->wps_upnp, addr,
1371                                 UPNP_WPS_WLANEVENT_TYPE_PROBE, wps_ie);
1372 #endif /* CONFIG_WPS_UPNP */
1373         }
1374
1375         wpabuf_free(wps_ie);
1376
1377         return 0;
1378 }
1379
1380
1381 #ifdef CONFIG_WPS_UPNP
1382
1383 static int hostapd_rx_req_put_wlan_response(
1384         void *priv, enum upnp_wps_wlanevent_type ev_type,
1385         const u8 *mac_addr, const struct wpabuf *msg,
1386         enum wps_msg_type msg_type)
1387 {
1388         struct hostapd_data *hapd = priv;
1389         struct sta_info *sta;
1390         struct upnp_pending_message *p;
1391
1392         wpa_printf(MSG_DEBUG, "WPS UPnP: PutWLANResponse ev_type=%d mac_addr="
1393                    MACSTR, ev_type, MAC2STR(mac_addr));
1394         wpa_hexdump(MSG_MSGDUMP, "WPS UPnP: PutWLANResponse NewMessage",
1395                     wpabuf_head(msg), wpabuf_len(msg));
1396         if (ev_type != UPNP_WPS_WLANEVENT_TYPE_EAP) {
1397                 wpa_printf(MSG_DEBUG, "WPS UPnP: Ignored unexpected "
1398                            "PutWLANResponse WLANEventType %d", ev_type);
1399                 return -1;
1400         }
1401
1402         /*
1403          * EAP response to ongoing to WPS Registration. Send it to EAP-WSC
1404          * server implementation for delivery to the peer.
1405          */
1406
1407         sta = ap_get_sta(hapd, mac_addr);
1408 #ifndef CONFIG_WPS_STRICT
1409         if (!sta) {
1410                 /*
1411                  * Workaround - Intel wsccmd uses bogus NewWLANEventMAC:
1412                  * Pick STA that is in an ongoing WPS registration without
1413                  * checking the MAC address.
1414                  */
1415                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found based "
1416                            "on NewWLANEventMAC; try wildcard match");
1417                 for (sta = hapd->sta_list; sta; sta = sta->next) {
1418                         if (sta->eapol_sm && (sta->flags & WLAN_STA_WPS))
1419                                 break;
1420                 }
1421         }
1422 #endif /* CONFIG_WPS_STRICT */
1423
1424         if (!sta || !(sta->flags & WLAN_STA_WPS)) {
1425                 wpa_printf(MSG_DEBUG, "WPS UPnP: No matching STA found");
1426                 return 0;
1427         }
1428
1429         if (!sta->eapol_sm) {
1430                 /*
1431                  * This can happen, e.g., if an ER sends an extra message after
1432                  * the station has disassociated (but not fully
1433                  * deauthenticated).
1434                  */
1435                 wpa_printf(MSG_DEBUG, "WPS UPnP: Matching STA did not have EAPOL state machine initialized");
1436                 return 0;
1437         }
1438
1439         p = os_zalloc(sizeof(*p));
1440         if (p == NULL)
1441                 return -1;
1442         os_memcpy(p->addr, sta->addr, ETH_ALEN);
1443         p->msg = wpabuf_dup(msg);
1444         p->type = msg_type;
1445         p->next = hapd->wps->upnp_msgs;
1446         hapd->wps->upnp_msgs = p;
1447
1448         return eapol_auth_eap_pending_cb(sta->eapol_sm, sta->eapol_sm->eap);
1449 }
1450
1451
1452 static int hostapd_wps_upnp_init(struct hostapd_data *hapd,
1453                                  struct wps_context *wps)
1454 {
1455         struct upnp_wps_device_ctx *ctx;
1456
1457         if (!hapd->conf->upnp_iface)
1458                 return 0;
1459         ctx = os_zalloc(sizeof(*ctx));
1460         if (ctx == NULL)
1461                 return -1;
1462
1463         ctx->rx_req_put_wlan_response = hostapd_rx_req_put_wlan_response;
1464         if (hapd->conf->ap_pin)
1465                 ctx->ap_pin = os_strdup(hapd->conf->ap_pin);
1466
1467         hapd->wps_upnp = upnp_wps_device_init(ctx, wps, hapd,
1468                                               hapd->conf->upnp_iface);
1469         if (hapd->wps_upnp == NULL)
1470                 return -1;
1471         wps->wps_upnp = hapd->wps_upnp;
1472
1473         return 0;
1474 }
1475
1476
1477 static void hostapd_wps_upnp_deinit(struct hostapd_data *hapd)
1478 {
1479         upnp_wps_device_deinit(hapd->wps_upnp, hapd);
1480 }
1481
1482 #endif /* CONFIG_WPS_UPNP */
1483
1484
1485 int hostapd_wps_get_mib_sta(struct hostapd_data *hapd, const u8 *addr,
1486                             char *buf, size_t buflen)
1487 {
1488         if (hapd->wps == NULL)
1489                 return 0;
1490         return wps_registrar_get_info(hapd->wps->registrar, addr, buf, buflen);
1491 }
1492
1493
1494 static void hostapd_wps_ap_pin_timeout(void *eloop_data, void *user_ctx)
1495 {
1496         struct hostapd_data *hapd = eloop_data;
1497         wpa_printf(MSG_DEBUG, "WPS: AP PIN timed out");
1498         hostapd_wps_ap_pin_disable(hapd);
1499         wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_PIN_DISABLED);
1500 }
1501
1502
1503 static void hostapd_wps_ap_pin_enable(struct hostapd_data *hapd, int timeout)
1504 {
1505         wpa_printf(MSG_DEBUG, "WPS: Enabling AP PIN (timeout=%d)", timeout);
1506         hapd->ap_pin_failures = 0;
1507         hapd->ap_pin_failures_consecutive = 0;
1508         hapd->conf->ap_setup_locked = 0;
1509         if (hapd->wps->ap_setup_locked) {
1510                 wpa_msg(hapd->msg_ctx, MSG_INFO, WPS_EVENT_AP_SETUP_UNLOCKED);
1511                 hapd->wps->ap_setup_locked = 0;
1512                 wps_registrar_update_ie(hapd->wps->registrar);
1513         }
1514         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1515         if (timeout > 0)
1516                 eloop_register_timeout(timeout, 0,
1517                                        hostapd_wps_ap_pin_timeout, hapd, NULL);
1518 }
1519
1520
1521 static int wps_ap_pin_disable(struct hostapd_data *hapd, void *ctx)
1522 {
1523         os_free(hapd->conf->ap_pin);
1524         hapd->conf->ap_pin = NULL;
1525 #ifdef CONFIG_WPS_UPNP
1526         upnp_wps_set_ap_pin(hapd->wps_upnp, NULL);
1527 #endif /* CONFIG_WPS_UPNP */
1528         eloop_cancel_timeout(hostapd_wps_ap_pin_timeout, hapd, NULL);
1529         return 0;
1530 }
1531
1532
1533 void hostapd_wps_ap_pin_disable(struct hostapd_data *hapd)
1534 {
1535         wpa_printf(MSG_DEBUG, "WPS: Disabling AP PIN");
1536         hostapd_wps_for_each(hapd, wps_ap_pin_disable, NULL);
1537 }
1538
1539
1540 struct wps_ap_pin_data {
1541         char pin_txt[9];
1542         int timeout;
1543 };
1544
1545
1546 static int wps_ap_pin_set(struct hostapd_data *hapd, void *ctx)
1547 {
1548         struct wps_ap_pin_data *data = ctx;
1549         os_free(hapd->conf->ap_pin);
1550         hapd->conf->ap_pin = os_strdup(data->pin_txt);
1551 #ifdef CONFIG_WPS_UPNP
1552         upnp_wps_set_ap_pin(hapd->wps_upnp, data->pin_txt);
1553 #endif /* CONFIG_WPS_UPNP */
1554         hostapd_wps_ap_pin_enable(hapd, data->timeout);
1555         return 0;
1556 }
1557
1558
1559 const char * hostapd_wps_ap_pin_random(struct hostapd_data *hapd, int timeout)
1560 {
1561         unsigned int pin;
1562         struct wps_ap_pin_data data;
1563
1564         pin = wps_generate_pin();
1565         os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%08u", pin);
1566         data.timeout = timeout;
1567         hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1568         return hapd->conf->ap_pin;
1569 }
1570
1571
1572 const char * hostapd_wps_ap_pin_get(struct hostapd_data *hapd)
1573 {
1574         return hapd->conf->ap_pin;
1575 }
1576
1577
1578 int hostapd_wps_ap_pin_set(struct hostapd_data *hapd, const char *pin,
1579                            int timeout)
1580 {
1581         struct wps_ap_pin_data data;
1582         int ret;
1583
1584         ret = os_snprintf(data.pin_txt, sizeof(data.pin_txt), "%s", pin);
1585         if (os_snprintf_error(sizeof(data.pin_txt), ret))
1586                 return -1;
1587         data.timeout = timeout;
1588         return hostapd_wps_for_each(hapd, wps_ap_pin_set, &data);
1589 }
1590
1591
1592 static int wps_update_ie(struct hostapd_data *hapd, void *ctx)
1593 {
1594         if (hapd->wps)
1595                 wps_registrar_update_ie(hapd->wps->registrar);
1596         return 0;
1597 }
1598
1599
1600 void hostapd_wps_update_ie(struct hostapd_data *hapd)
1601 {
1602         hostapd_wps_for_each(hapd, wps_update_ie, NULL);
1603 }
1604
1605
1606 int hostapd_wps_config_ap(struct hostapd_data *hapd, const char *ssid,
1607                           const char *auth, const char *encr, const char *key)
1608 {
1609         struct wps_credential cred;
1610         size_t len;
1611
1612         os_memset(&cred, 0, sizeof(cred));
1613
1614         len = os_strlen(ssid);
1615         if ((len & 1) || len > 2 * sizeof(cred.ssid) ||
1616             hexstr2bin(ssid, cred.ssid, len / 2))
1617                 return -1;
1618         cred.ssid_len = len / 2;
1619
1620         if (os_strncmp(auth, "OPEN", 4) == 0)
1621                 cred.auth_type = WPS_AUTH_OPEN;
1622         else if (os_strncmp(auth, "WPAPSK", 6) == 0)
1623                 cred.auth_type = WPS_AUTH_WPAPSK;
1624         else if (os_strncmp(auth, "WPA2PSK", 7) == 0)
1625                 cred.auth_type = WPS_AUTH_WPA2PSK;
1626         else
1627                 return -1;
1628
1629         if (encr) {
1630                 if (os_strncmp(encr, "NONE", 4) == 0)
1631                         cred.encr_type = WPS_ENCR_NONE;
1632                 else if (os_strncmp(encr, "TKIP", 4) == 0)
1633                         cred.encr_type = WPS_ENCR_TKIP;
1634                 else if (os_strncmp(encr, "CCMP", 4) == 0)
1635                         cred.encr_type = WPS_ENCR_AES;
1636                 else
1637                         return -1;
1638         } else
1639                 cred.encr_type = WPS_ENCR_NONE;
1640
1641         if (key) {
1642                 len = os_strlen(key);
1643                 if ((len & 1) || len > 2 * sizeof(cred.key) ||
1644                     hexstr2bin(key, cred.key, len / 2))
1645                         return -1;
1646                 cred.key_len = len / 2;
1647         }
1648
1649         return wps_registrar_config_ap(hapd->wps->registrar, &cred);
1650 }
1651
1652
1653 #ifdef CONFIG_WPS_NFC
1654
1655 struct wps_nfc_password_token_data {
1656         const u8 *oob_dev_pw;
1657         size_t oob_dev_pw_len;
1658         int added;
1659 };
1660
1661
1662 static int wps_add_nfc_password_token(struct hostapd_data *hapd, void *ctx)
1663 {
1664         struct wps_nfc_password_token_data *data = ctx;
1665         int ret;
1666
1667         if (hapd->wps == NULL)
1668                 return 0;
1669         ret = wps_registrar_add_nfc_password_token(hapd->wps->registrar,
1670                                                    data->oob_dev_pw,
1671                                                    data->oob_dev_pw_len);
1672         if (ret == 0)
1673                 data->added++;
1674         return ret;
1675 }
1676
1677
1678 static int hostapd_wps_add_nfc_password_token(struct hostapd_data *hapd,
1679                                               struct wps_parse_attr *attr)
1680 {
1681         struct wps_nfc_password_token_data data;
1682
1683         data.oob_dev_pw = attr->oob_dev_password;
1684         data.oob_dev_pw_len = attr->oob_dev_password_len;
1685         data.added = 0;
1686         if (hostapd_wps_for_each(hapd, wps_add_nfc_password_token, &data) < 0)
1687                 return -1;
1688         return data.added ? 0 : -1;
1689 }
1690
1691
1692 static int hostapd_wps_nfc_tag_process(struct hostapd_data *hapd,
1693                                        const struct wpabuf *wps)
1694 {
1695         struct wps_parse_attr attr;
1696
1697         wpa_hexdump_buf(MSG_DEBUG, "WPS: Received NFC tag payload", wps);
1698
1699         if (wps_parse_msg(wps, &attr)) {
1700                 wpa_printf(MSG_DEBUG, "WPS: Ignore invalid data from NFC tag");
1701                 return -1;
1702         }
1703
1704         if (attr.oob_dev_password)
1705                 return hostapd_wps_add_nfc_password_token(hapd, &attr);
1706
1707         wpa_printf(MSG_DEBUG, "WPS: Ignore unrecognized NFC tag");
1708         return -1;
1709 }
1710
1711
1712 int hostapd_wps_nfc_tag_read(struct hostapd_data *hapd,
1713                              const struct wpabuf *data)
1714 {
1715         const struct wpabuf *wps = data;
1716         struct wpabuf *tmp = NULL;
1717         int ret;
1718
1719         if (wpabuf_len(data) < 4)
1720                 return -1;
1721
1722         if (*wpabuf_head_u8(data) != 0x10) {
1723                 /* Assume this contains full NDEF record */
1724                 tmp = ndef_parse_wifi(data);
1725                 if (tmp == NULL) {
1726                         wpa_printf(MSG_DEBUG, "WPS: Could not parse NDEF");
1727                         return -1;
1728                 }
1729                 wps = tmp;
1730         }
1731
1732         ret = hostapd_wps_nfc_tag_process(hapd, wps);
1733         wpabuf_free(tmp);
1734         return ret;
1735 }
1736
1737
1738 struct wpabuf * hostapd_wps_nfc_config_token(struct hostapd_data *hapd,
1739                                              int ndef)
1740 {
1741         struct wpabuf *ret;
1742
1743         if (hapd->wps == NULL)
1744                 return NULL;
1745
1746         ret = wps_get_oob_cred(hapd->wps, hostapd_wps_rf_band_cb(hapd),
1747                                hapd->iconf->channel);
1748         if (ndef && ret) {
1749                 struct wpabuf *tmp;
1750                 tmp = ndef_build_wifi(ret);
1751                 wpabuf_free(ret);
1752                 if (tmp == NULL)
1753                         return NULL;
1754                 ret = tmp;
1755         }
1756
1757         return ret;
1758 }
1759
1760
1761 struct wpabuf * hostapd_wps_nfc_hs_cr(struct hostapd_data *hapd, int ndef)
1762 {
1763         struct wpabuf *ret;
1764
1765         if (hapd->wps == NULL)
1766                 return NULL;
1767
1768         if (hapd->conf->wps_nfc_dh_pubkey == NULL) {
1769                 struct wps_context *wps = hapd->wps;
1770                 if (wps_nfc_gen_dh(&hapd->conf->wps_nfc_dh_pubkey,
1771                                    &hapd->conf->wps_nfc_dh_privkey) < 0)
1772                         return NULL;
1773                 hostapd_wps_nfc_clear(wps);
1774                 wps->ap_nfc_dev_pw_id = DEV_PW_NFC_CONNECTION_HANDOVER;
1775                 wps->ap_nfc_dh_pubkey =
1776                         wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1777                 wps->ap_nfc_dh_privkey =
1778                         wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1779                 if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey) {
1780                         hostapd_wps_nfc_clear(wps);
1781                         return NULL;
1782                 }
1783         }
1784
1785         ret = wps_build_nfc_handover_sel(hapd->wps,
1786                                          hapd->conf->wps_nfc_dh_pubkey,
1787                                          hapd->own_addr, hapd->iface->freq);
1788
1789         if (ndef && ret) {
1790                 struct wpabuf *tmp;
1791                 tmp = ndef_build_wifi(ret);
1792                 wpabuf_free(ret);
1793                 if (tmp == NULL)
1794                         return NULL;
1795                 ret = tmp;
1796         }
1797
1798         return ret;
1799 }
1800
1801
1802 int hostapd_wps_nfc_report_handover(struct hostapd_data *hapd,
1803                                     const struct wpabuf *req,
1804                                     const struct wpabuf *sel)
1805 {
1806         struct wpabuf *wps;
1807         int ret = -1;
1808         u16 wsc_len;
1809         const u8 *pos;
1810         struct wpabuf msg;
1811         struct wps_parse_attr attr;
1812         u16 dev_pw_id;
1813
1814         /*
1815          * Enrollee/station is always initiator of the NFC connection handover,
1816          * so use the request message here to find Enrollee public key hash.
1817          */
1818         wps = ndef_parse_wifi(req);
1819         if (wps == NULL)
1820                 return -1;
1821         wpa_printf(MSG_DEBUG, "WPS: Received application/vnd.wfa.wsc "
1822                    "payload from NFC connection handover");
1823         wpa_hexdump_buf(MSG_DEBUG, "WPS: NFC payload", wps);
1824         if (wpabuf_len(wps) < 2) {
1825                 wpa_printf(MSG_DEBUG, "WPS: Too short Wi-Fi Handover Request "
1826                            "Message");
1827                 goto out;
1828         }
1829         pos = wpabuf_head(wps);
1830         wsc_len = WPA_GET_BE16(pos);
1831         if (wsc_len > wpabuf_len(wps) - 2) {
1832                 wpa_printf(MSG_DEBUG, "WPS: Invalid WSC attribute length (%u) "
1833                            "in rt Wi-Fi Handover Request Message", wsc_len);
1834                 goto out;
1835         }
1836         pos += 2;
1837
1838         wpa_hexdump(MSG_DEBUG,
1839                     "WPS: WSC attributes in Wi-Fi Handover Request Message",
1840                     pos, wsc_len);
1841         if (wsc_len < wpabuf_len(wps) - 2) {
1842                 wpa_hexdump(MSG_DEBUG,
1843                             "WPS: Ignore extra data after WSC attributes",
1844                             pos + wsc_len, wpabuf_len(wps) - 2 - wsc_len);
1845         }
1846
1847         wpabuf_set(&msg, pos, wsc_len);
1848         ret = wps_parse_msg(&msg, &attr);
1849         if (ret < 0) {
1850                 wpa_printf(MSG_DEBUG, "WPS: Could not parse WSC attributes in "
1851                            "Wi-Fi Handover Request Message");
1852                 goto out;
1853         }
1854
1855         if (attr.oob_dev_password == NULL ||
1856             attr.oob_dev_password_len < WPS_OOB_PUBKEY_HASH_LEN + 2) {
1857                 wpa_printf(MSG_DEBUG, "WPS: No Out-of-Band Device Password "
1858                            "included in Wi-Fi Handover Request Message");
1859                 ret = -1;
1860                 goto out;
1861         }
1862
1863         if (attr.uuid_e == NULL) {
1864                 wpa_printf(MSG_DEBUG, "WPS: No UUID-E included in Wi-Fi "
1865                            "Handover Request Message");
1866                 ret = -1;
1867                 goto out;
1868         }
1869
1870         wpa_hexdump(MSG_DEBUG, "WPS: UUID-E", attr.uuid_e, WPS_UUID_LEN);
1871
1872         wpa_hexdump(MSG_DEBUG, "WPS: Out-of-Band Device Password",
1873                     attr.oob_dev_password, attr.oob_dev_password_len);
1874         dev_pw_id = WPA_GET_BE16(attr.oob_dev_password +
1875                                  WPS_OOB_PUBKEY_HASH_LEN);
1876         if (dev_pw_id != DEV_PW_NFC_CONNECTION_HANDOVER) {
1877                 wpa_printf(MSG_DEBUG, "WPS: Unexpected OOB Device Password ID "
1878                            "%u in Wi-Fi Handover Request Message", dev_pw_id);
1879                 ret = -1;
1880                 goto out;
1881         }
1882         wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Public Key hash",
1883                     attr.oob_dev_password, WPS_OOB_PUBKEY_HASH_LEN);
1884
1885         ret = wps_registrar_add_nfc_pw_token(hapd->wps->registrar,
1886                                              attr.oob_dev_password,
1887                                              DEV_PW_NFC_CONNECTION_HANDOVER,
1888                                              NULL, 0, 1);
1889
1890 out:
1891         wpabuf_free(wps);
1892         return ret;
1893 }
1894
1895
1896 struct wpabuf * hostapd_wps_nfc_token_gen(struct hostapd_data *hapd, int ndef)
1897 {
1898         if (hapd->conf->wps_nfc_pw_from_config) {
1899                 return wps_nfc_token_build(ndef,
1900                                            hapd->conf->wps_nfc_dev_pw_id,
1901                                            hapd->conf->wps_nfc_dh_pubkey,
1902                                            hapd->conf->wps_nfc_dev_pw);
1903         }
1904
1905         return wps_nfc_token_gen(ndef, &hapd->conf->wps_nfc_dev_pw_id,
1906                                  &hapd->conf->wps_nfc_dh_pubkey,
1907                                  &hapd->conf->wps_nfc_dh_privkey,
1908                                  &hapd->conf->wps_nfc_dev_pw);
1909 }
1910
1911
1912 int hostapd_wps_nfc_token_enable(struct hostapd_data *hapd)
1913 {
1914         struct wps_context *wps = hapd->wps;
1915         struct wpabuf *pw;
1916
1917         if (wps == NULL)
1918                 return -1;
1919
1920         if (!hapd->conf->wps_nfc_dh_pubkey ||
1921             !hapd->conf->wps_nfc_dh_privkey ||
1922             !hapd->conf->wps_nfc_dev_pw ||
1923             !hapd->conf->wps_nfc_dev_pw_id)
1924                 return -1;
1925
1926         hostapd_wps_nfc_clear(wps);
1927         wpa_printf(MSG_DEBUG,
1928                    "WPS: Enable NFC Tag (Dev Pw Id %u) for AP interface %s (context %p)",
1929                    hapd->conf->wps_nfc_dev_pw_id, hapd->conf->iface, wps);
1930         wps->ap_nfc_dev_pw_id = hapd->conf->wps_nfc_dev_pw_id;
1931         wps->ap_nfc_dh_pubkey = wpabuf_dup(hapd->conf->wps_nfc_dh_pubkey);
1932         wps->ap_nfc_dh_privkey = wpabuf_dup(hapd->conf->wps_nfc_dh_privkey);
1933         pw = hapd->conf->wps_nfc_dev_pw;
1934         wps->ap_nfc_dev_pw = wpabuf_alloc(
1935                 wpabuf_len(pw) * 2 + 1);
1936         if (wps->ap_nfc_dev_pw) {
1937                 wpa_snprintf_hex_uppercase(
1938                         (char *) wpabuf_put(wps->ap_nfc_dev_pw,
1939                                             wpabuf_len(pw) * 2),
1940                         wpabuf_len(pw) * 2 + 1,
1941                         wpabuf_head(pw), wpabuf_len(pw));
1942         }
1943
1944         if (!wps->ap_nfc_dh_pubkey || !wps->ap_nfc_dh_privkey ||
1945             !wps->ap_nfc_dev_pw) {
1946                 hostapd_wps_nfc_clear(wps);
1947                 return -1;
1948         }
1949
1950         return 0;
1951 }
1952
1953
1954 void hostapd_wps_nfc_token_disable(struct hostapd_data *hapd)
1955 {
1956         wpa_printf(MSG_DEBUG, "WPS: Disable NFC token for AP interface %s",
1957                    hapd->conf->iface);
1958         hostapd_wps_nfc_clear(hapd->wps);
1959 }
1960
1961 #endif /* CONFIG_WPS_NFC */