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