wpa_supplicant: wps_supplicant.c Source File

00001 /*
00002  * wpa_supplicant / WPS integration
00003  * Copyright (c) 2008-2010, Jouni Malinen <j@w1.fi>
00004  *
00005  * This program is free software; you can redistribute it and/or modify
00006  * it under the terms of the GNU General Public License version 2 as
00007  * published by the Free Software Foundation.
00008  *
00009  * Alternatively, this software may be distributed under the terms of BSD
00010  * license.
00011  *
00012  * See README and COPYING for more details.
00013  */
00014 
00015 #include "includes.h"
00016 
00017 #include "common.h"
00018 #include "eloop.h"
00019 #include "uuid.h"
00020 #include "crypto/dh_group5.h"
00021 #include "common/ieee802_11_defs.h"
00022 #include "common/ieee802_11_common.h"
00023 #include "common/wpa_common.h"
00024 #include "common/wpa_ctrl.h"
00025 #include "eap_common/eap_wsc_common.h"
00026 #include "eap_peer/eap.h"
00027 #include "rsn_supp/wpa.h"
00028 #include "config.h"
00029 #include "wpa_supplicant_i.h"
00030 #include "driver_i.h"
00031 #include "notify.h"
00032 #include "blacklist.h"
00033 #include "bss.h"
00034 #include "scan.h"
00035 #include "wps_supplicant.h"
00036 
00037 
00038 #define WPS_PIN_SCAN_IGNORE_SEL_REG 3
00039 
00040 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx);
00041 static void wpas_clear_wps(struct wpa_supplicant *wpa_s);
00042 
00043 
00044 int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s)
00045 {
00046         if (!wpa_s->wps_success &&
00047             wpa_s->current_ssid &&
00048             eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) {
00049                 const u8 *bssid = wpa_s->bssid;
00050                 if (is_zero_ether_addr(bssid))
00051                         bssid = wpa_s->pending_bssid;
00052 
00053                 wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR
00054                            " did not succeed - continue trying to find "
00055                            "suitable AP", MAC2STR(bssid));
00056                 wpa_blacklist_add(wpa_s, bssid);
00057 
00058                 wpa_supplicant_deauthenticate(wpa_s,
00059                                               WLAN_REASON_DEAUTH_LEAVING);
00060                 wpa_s->reassociate = 1;
00061                 wpa_supplicant_req_scan(wpa_s,
00062                                         wpa_s->blacklist_cleared ? 5 : 0, 0);
00063                 wpa_s->blacklist_cleared = 0;
00064                 return 1;
00065         }
00066 
00067         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
00068 
00069         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid &&
00070             !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
00071                 wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - "
00072                            "try to associate with the received credential");
00073                 wpa_supplicant_deauthenticate(wpa_s,
00074                                               WLAN_REASON_DEAUTH_LEAVING);
00075                 wpa_s->after_wps = 5;
00076                 wpa_s->wps_freq = wpa_s->assoc_freq;
00077                 wpa_s->reassociate = 1;
00078                 wpa_supplicant_req_scan(wpa_s, 0, 0);
00079                 return 1;
00080         }
00081 
00082         if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) {
00083                 wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting "
00084                            "for external credential processing");
00085                 wpas_clear_wps(wpa_s);
00086                 wpa_supplicant_deauthenticate(wpa_s,
00087                                               WLAN_REASON_DEAUTH_LEAVING);
00088                 return 1;
00089         }
00090 
00091         return 0;
00092 }
00093 
00094 
00095 static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s,
00096                                          struct wpa_ssid *ssid,
00097                                          const struct wps_credential *cred)
00098 {
00099         struct wpa_driver_capa capa;
00100         struct wpa_bss *bss;
00101         const u8 *ie;
00102         struct wpa_ie_data adv;
00103         int wpa2 = 0, ccmp = 0;
00104 
00105         /*
00106          * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in
00107          * case they are configured for mixed mode operation (WPA+WPA2 and
00108          * TKIP+CCMP). Try to use scan results to figure out whether the AP
00109          * actually supports stronger security and select that if the client
00110          * has support for it, too.
00111          */
00112 
00113         if (wpa_drv_get_capa(wpa_s, &capa))
00114                 return; /* Unknown what driver supports */
00115 
00116         bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len);
00117         if (bss == NULL) {
00118                 wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS "
00119                            "table - use credential as-is");
00120                 return;
00121         }
00122 
00123         wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table");
00124 
00125         ie = wpa_bss_get_ie(bss, WLAN_EID_RSN);
00126         if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) {
00127                 wpa2 = 1;
00128                 if (adv.pairwise_cipher & WPA_CIPHER_CCMP)
00129                         ccmp = 1;
00130         } else {
00131                 ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE);
00132                 if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 &&
00133                     adv.pairwise_cipher & WPA_CIPHER_CCMP)
00134                         ccmp = 1;
00135         }
00136 
00137         if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) &&
00138             (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) {
00139                 /*
00140                  * TODO: This could be the initial AP configuration and the
00141                  * Beacon contents could change shortly. Should request a new
00142                  * scan and delay addition of the network until the updated
00143                  * scan results are available.
00144                  */
00145                 wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA "
00146                            "support - use credential as-is");
00147                 return;
00148         }
00149 
00150         if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) &&
00151             (ssid->pairwise_cipher & WPA_CIPHER_TKIP) &&
00152             (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) {
00153                 wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential "
00154                            "based on scan results");
00155                 if (wpa_s->conf->ap_scan == 1)
00156                         ssid->pairwise_cipher |= WPA_CIPHER_CCMP;
00157                 else
00158                         ssid->pairwise_cipher = WPA_CIPHER_CCMP;
00159         }
00160 
00161         if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) &&
00162             (ssid->proto & WPA_PROTO_WPA) &&
00163             (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) {
00164                 wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential "
00165                            "based on scan results");
00166                 if (wpa_s->conf->ap_scan == 1)
00167                         ssid->proto |= WPA_PROTO_RSN;
00168                 else
00169                         ssid->proto = WPA_PROTO_RSN;
00170         }
00171 }
00172 
00173 
00174 static int wpa_supplicant_wps_cred(void *ctx,
00175                                    const struct wps_credential *cred)
00176 {
00177         struct wpa_supplicant *wpa_s = ctx;
00178         struct wpa_ssid *ssid = wpa_s->current_ssid;
00179         u8 key_idx = 0;
00180         u16 auth_type;
00181 
00182         if ((wpa_s->conf->wps_cred_processing == 1 ||
00183              wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) {
00184                 size_t blen = cred->cred_attr_len * 2 + 1;
00185                 char *buf = os_malloc(blen);
00186                 if (buf) {
00187                         wpa_snprintf_hex(buf, blen,
00188                                          cred->cred_attr, cred->cred_attr_len);
00189                         wpa_msg(wpa_s, MSG_INFO, "%s%s",
00190                                 WPS_EVENT_CRED_RECEIVED, buf);
00191                         os_free(buf);
00192                 }
00193 
00194                 wpas_notify_wps_credential(wpa_s, cred);
00195         } else
00196                 wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED);
00197 
00198         wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute",
00199                         cred->cred_attr, cred->cred_attr_len);
00200 
00201         if (wpa_s->conf->wps_cred_processing == 1)
00202                 return 0;
00203 
00204         wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len);
00205         wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x",
00206                    cred->auth_type);
00207         wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type);
00208         wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx);
00209         wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key",
00210                         cred->key, cred->key_len);
00211         wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR,
00212                    MAC2STR(cred->mac_addr));
00213 
00214         auth_type = cred->auth_type;
00215         if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) {
00216                 wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode "
00217                            "auth_type into WPA2PSK");
00218                 auth_type = WPS_AUTH_WPA2PSK;
00219         }
00220 
00221         if (auth_type != WPS_AUTH_OPEN &&
00222             auth_type != WPS_AUTH_SHARED &&
00223             auth_type != WPS_AUTH_WPAPSK &&
00224             auth_type != WPS_AUTH_WPA2PSK) {
00225                 wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for "
00226                            "unsupported authentication type 0x%x",
00227                            auth_type);
00228                 return 0;
00229         }
00230 
00231         if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) {
00232                 wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based "
00233                            "on the received credential");
00234                 os_free(ssid->eap.identity);
00235                 ssid->eap.identity = NULL;
00236                 ssid->eap.identity_len = 0;
00237                 os_free(ssid->eap.phase1);
00238                 ssid->eap.phase1 = NULL;
00239                 os_free(ssid->eap.eap_methods);
00240                 ssid->eap.eap_methods = NULL;
00241         } else {
00242                 wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the "
00243                            "received credential");
00244                 ssid = wpa_config_add_network(wpa_s->conf);
00245                 if (ssid == NULL)
00246                         return -1;
00247                 wpas_notify_network_added(wpa_s, ssid);
00248         }
00249 
00250         wpa_config_set_network_defaults(ssid);
00251 
00252         os_free(ssid->ssid);
00253         ssid->ssid = os_malloc(cred->ssid_len);
00254         if (ssid->ssid) {
00255                 os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len);
00256                 ssid->ssid_len = cred->ssid_len;
00257         }
00258 
00259         switch (cred->encr_type) {
00260         case WPS_ENCR_NONE:
00261                 break;
00262         case WPS_ENCR_WEP:
00263                 if (cred->key_len <= 0)
00264                         break;
00265                 if (cred->key_len != 5 && cred->key_len != 13 &&
00266                     cred->key_len != 10 && cred->key_len != 26) {
00267                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length "
00268                                    "%lu", (unsigned long) cred->key_len);
00269                         return -1;
00270                 }
00271                 if (cred->key_idx > NUM_WEP_KEYS) {
00272                         wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d",
00273                                    cred->key_idx);
00274                         return -1;
00275                 }
00276                 if (cred->key_idx)
00277                         key_idx = cred->key_idx - 1;
00278                 if (cred->key_len == 10 || cred->key_len == 26) {
00279                         if (hexstr2bin((char *) cred->key,
00280                                        ssid->wep_key[key_idx],
00281                                        cred->key_len / 2) < 0) {
00282                                 wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key "
00283                                            "%d", key_idx);
00284                                 return -1;
00285                         }
00286                         ssid->wep_key_len[key_idx] = cred->key_len / 2;
00287                 } else {
00288                         os_memcpy(ssid->wep_key[key_idx], cred->key,
00289                                   cred->key_len);
00290                         ssid->wep_key_len[key_idx] = cred->key_len;
00291                 }
00292                 ssid->wep_tx_keyidx = key_idx;
00293                 break;
00294         case WPS_ENCR_TKIP:
00295                 ssid->pairwise_cipher = WPA_CIPHER_TKIP;
00296                 break;
00297         case WPS_ENCR_AES:
00298                 ssid->pairwise_cipher = WPA_CIPHER_CCMP;
00299                 break;
00300         }
00301 
00302         switch (auth_type) {
00303         case WPS_AUTH_OPEN:
00304                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
00305                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
00306                 ssid->proto = 0;
00307                 break;
00308         case WPS_AUTH_SHARED:
00309                 ssid->auth_alg = WPA_AUTH_ALG_SHARED;
00310                 ssid->key_mgmt = WPA_KEY_MGMT_NONE;
00311                 ssid->proto = 0;
00312                 break;
00313         case WPS_AUTH_WPAPSK:
00314                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
00315                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
00316                 ssid->proto = WPA_PROTO_WPA;
00317                 break;
00318         case WPS_AUTH_WPA:
00319                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
00320                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
00321                 ssid->proto = WPA_PROTO_WPA;
00322                 break;
00323         case WPS_AUTH_WPA2:
00324                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
00325                 ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X;
00326                 ssid->proto = WPA_PROTO_RSN;
00327                 break;
00328         case WPS_AUTH_WPA2PSK:
00329                 ssid->auth_alg = WPA_AUTH_ALG_OPEN;
00330                 ssid->key_mgmt = WPA_KEY_MGMT_PSK;
00331                 ssid->proto = WPA_PROTO_RSN;
00332                 break;
00333         }
00334 
00335         if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) {
00336                 if (cred->key_len == 2 * PMK_LEN) {
00337                         if (hexstr2bin((const char *) cred->key, ssid->psk,
00338                                        PMK_LEN)) {
00339                                 wpa_printf(MSG_ERROR, "WPS: Invalid Network "
00340                                            "Key");
00341                                 return -1;
00342                         }
00343                         ssid->psk_set = 1;
00344                 } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) {
00345                         os_free(ssid->passphrase);
00346                         ssid->passphrase = os_malloc(cred->key_len + 1);
00347                         if (ssid->passphrase == NULL)
00348                                 return -1;
00349                         os_memcpy(ssid->passphrase, cred->key, cred->key_len);
00350                         ssid->passphrase[cred->key_len] = '\0';
00351                         wpa_config_update_psk(ssid);
00352                 } else {
00353                         wpa_printf(MSG_ERROR, "WPS: Invalid Network Key "
00354                                    "length %lu",
00355                                    (unsigned long) cred->key_len);
00356                         return -1;
00357                 }
00358         }
00359 
00360         wpas_wps_security_workaround(wpa_s, ssid, cred);
00361 
00362 #ifndef CONFIG_NO_CONFIG_WRITE
00363         if (wpa_s->conf->update_config &&
00364             wpa_config_write(wpa_s->confname, wpa_s->conf)) {
00365                 wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration");
00366                 return -1;
00367         }
00368 #endif /* CONFIG_NO_CONFIG_WRITE */
00369 
00370         return 0;
00371 }
00372 
00373 
00374 static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s,
00375                                          struct wps_event_m2d *m2d)
00376 {
00377         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D
00378                 "dev_password_id=%d config_error=%d",
00379                 m2d->dev_password_id, m2d->config_error);
00380         wpas_notify_wps_event_m2d(wpa_s, m2d);
00381 }
00382 
00383 
00384 static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s,
00385                                           struct wps_event_fail *fail)
00386 {
00387         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL "msg=%d", fail->msg);
00388         wpas_clear_wps(wpa_s);
00389         wpas_notify_wps_event_fail(wpa_s, fail);
00390 }
00391 
00392 
00393 static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s)
00394 {
00395         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS);
00396         wpa_s->wps_success = 1;
00397         wpas_notify_wps_event_success(wpa_s);
00398 }
00399 
00400 
00401 static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s,
00402                                                struct wps_event_er_ap *ap)
00403 {
00404         char uuid_str[100];
00405         char dev_type[WPS_DEV_TYPE_BUFSIZE];
00406 
00407         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
00408         if (ap->pri_dev_type)
00409                 wps_dev_type_bin2str(ap->pri_dev_type, dev_type,
00410                                      sizeof(dev_type));
00411         else
00412                 dev_type[0] = '\0';
00413 
00414         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR
00415                 " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|",
00416                 uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state,
00417                 ap->friendly_name ? ap->friendly_name : "",
00418                 ap->manufacturer ? ap->manufacturer : "",
00419                 ap->model_description ? ap->model_description : "",
00420                 ap->model_name ? ap->model_name : "",
00421                 ap->manufacturer_url ? ap->manufacturer_url : "",
00422                 ap->model_url ? ap->model_url : "");
00423 }
00424 
00425 
00426 static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s,
00427                                                   struct wps_event_er_ap *ap)
00428 {
00429         char uuid_str[100];
00430         uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str));
00431         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str);
00432 }
00433 
00434 
00435 static void wpa_supplicant_wps_event_er_enrollee_add(
00436         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
00437 {
00438         char uuid_str[100];
00439         char dev_type[WPS_DEV_TYPE_BUFSIZE];
00440 
00441         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
00442         if (enrollee->pri_dev_type)
00443                 wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type,
00444                                      sizeof(dev_type));
00445         else
00446                 dev_type[0] = '\0';
00447 
00448         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR
00449                 " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s "
00450                 "|%s|%s|%s|%s|%s|",
00451                 uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received,
00452                 enrollee->config_methods, enrollee->dev_passwd_id, dev_type,
00453                 enrollee->dev_name ? enrollee->dev_name : "",
00454                 enrollee->manufacturer ? enrollee->manufacturer : "",
00455                 enrollee->model_name ? enrollee->model_name : "",
00456                 enrollee->model_number ? enrollee->model_number : "",
00457                 enrollee->serial_number ? enrollee->serial_number : "");
00458 }
00459 
00460 
00461 static void wpa_supplicant_wps_event_er_enrollee_remove(
00462         struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee)
00463 {
00464         char uuid_str[100];
00465         uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str));
00466         wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR,
00467                 uuid_str, MAC2STR(enrollee->mac_addr));
00468 }
00469 
00470 
00471 static void wpa_supplicant_wps_event(void *ctx, enum wps_event event,
00472                                      union wps_event_data *data)
00473 {
00474         struct wpa_supplicant *wpa_s = ctx;
00475         switch (event) {
00476         case WPS_EV_M2D:
00477                 wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d);
00478                 break;
00479         case WPS_EV_FAIL:
00480                 wpa_supplicant_wps_event_fail(wpa_s, &data->fail);
00481                 break;
00482         case WPS_EV_SUCCESS:
00483                 wpa_supplicant_wps_event_success(wpa_s);
00484                 break;
00485         case WPS_EV_PWD_AUTH_FAIL:
00486                 break;
00487         case WPS_EV_PBC_OVERLAP:
00488                 break;
00489         case WPS_EV_PBC_TIMEOUT:
00490                 break;
00491         case WPS_EV_ER_AP_ADD:
00492                 wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap);
00493                 break;
00494         case WPS_EV_ER_AP_REMOVE:
00495                 wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap);
00496                 break;
00497         case WPS_EV_ER_ENROLLEE_ADD:
00498                 wpa_supplicant_wps_event_er_enrollee_add(wpa_s,
00499                                                          &data->enrollee);
00500                 break;
00501         case WPS_EV_ER_ENROLLEE_REMOVE:
00502                 wpa_supplicant_wps_event_er_enrollee_remove(wpa_s,
00503                                                             &data->enrollee);
00504                 break;
00505         }
00506 }
00507 
00508 
00509 enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid)
00510 {
00511         if (eap_is_wps_pbc_enrollee(&ssid->eap) ||
00512             eap_is_wps_pin_enrollee(&ssid->eap))
00513                 return WPS_REQ_ENROLLEE;
00514         else
00515                 return WPS_REQ_REGISTRAR;
00516 }
00517 
00518 
00519 static void wpas_clear_wps(struct wpa_supplicant *wpa_s)
00520 {
00521         int id;
00522         struct wpa_ssid *ssid, *remove_ssid = NULL;
00523 
00524         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
00525 
00526         /* Remove any existing WPS network from configuration */
00527         ssid = wpa_s->conf->ssid;
00528         while (ssid) {
00529                 if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) {
00530                         if (ssid == wpa_s->current_ssid) {
00531                                 wpa_s->current_ssid = NULL;
00532                                 if (ssid != NULL)
00533                                         wpas_notify_network_changed(wpa_s);
00534                         }
00535                         id = ssid->id;
00536                         remove_ssid = ssid;
00537                 } else
00538                         id = -1;
00539                 ssid = ssid->next;
00540                 if (id >= 0) {
00541                         wpas_notify_network_removed(wpa_s, remove_ssid);
00542                         wpa_config_remove_network(wpa_s->conf, id);
00543                 }
00544         }
00545 }
00546 
00547 
00548 static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx)
00549 {
00550         struct wpa_supplicant *wpa_s = eloop_ctx;
00551         wpa_printf(MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed "
00552                    "out");
00553         wpas_clear_wps(wpa_s);
00554 }
00555 
00556 
00557 static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s,
00558                                               int registrar, const u8 *bssid)
00559 {
00560         struct wpa_ssid *ssid;
00561 
00562         ssid = wpa_config_add_network(wpa_s->conf);
00563         if (ssid == NULL)
00564                 return NULL;
00565         wpas_notify_network_added(wpa_s, ssid);
00566         wpa_config_set_network_defaults(ssid);
00567         if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 ||
00568             wpa_config_set(ssid, "eap", "WSC", 0) < 0 ||
00569             wpa_config_set(ssid, "identity", registrar ?
00570                            "\"" WSC_ID_REGISTRAR "\"" :
00571                            "\"" WSC_ID_ENROLLEE "\"", 0) < 0) {
00572                 wpas_notify_network_removed(wpa_s, ssid);
00573                 wpa_config_remove_network(wpa_s->conf, ssid->id);
00574                 return NULL;
00575         }
00576 
00577         if (bssid) {
00578                 struct wpa_bss *bss;
00579                 int count = 0;
00580 
00581                 os_memcpy(ssid->bssid, bssid, ETH_ALEN);
00582                 ssid->bssid_set = 1;
00583 
00584                 dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
00585                         if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0)
00586                                 continue;
00587 
00588                         os_free(ssid->ssid);
00589                         ssid->ssid = os_malloc(bss->ssid_len);
00590                         if (ssid->ssid == NULL)
00591                                 break;
00592                         os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len);
00593                         ssid->ssid_len = bss->ssid_len;
00594                         wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from "
00595                                           "scan results",
00596                                           ssid->ssid, ssid->ssid_len);
00597                         count++;
00598                 }
00599 
00600                 if (count > 1) {
00601                         wpa_printf(MSG_DEBUG, "WPS: More than one SSID found "
00602                                    "for the AP; use wildcard");
00603                         os_free(ssid->ssid);
00604                         ssid->ssid = NULL;
00605                         ssid->ssid_len = 0;
00606                 }
00607         }
00608 
00609         return ssid;
00610 }
00611 
00612 
00613 static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s,
00614                              struct wpa_ssid *selected)
00615 {
00616         struct wpa_ssid *ssid;
00617 
00618         /* Mark all other networks disabled and trigger reassociation */
00619         ssid = wpa_s->conf->ssid;
00620         while (ssid) {
00621                 int was_disabled = ssid->disabled;
00622                 ssid->disabled = ssid != selected;
00623                 if (was_disabled != ssid->disabled)
00624                         wpas_notify_network_enabled_changed(wpa_s, ssid);
00625                 ssid = ssid->next;
00626         }
00627         wpa_s->disconnected = 0;
00628         wpa_s->reassociate = 1;
00629         wpa_s->scan_runs = 0;
00630         wpa_s->wps_success = 0;
00631         wpa_s->blacklist_cleared = 0;
00632         wpa_supplicant_req_scan(wpa_s, 0, 0);
00633 }
00634 
00635 
00636 int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid)
00637 {
00638         struct wpa_ssid *ssid;
00639         wpas_clear_wps(wpa_s);
00640         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
00641         if (ssid == NULL)
00642                 return -1;
00643         wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0);
00644         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
00645                                wpa_s, NULL);
00646         wpas_wps_reassoc(wpa_s, ssid);
00647         return 0;
00648 }
00649 
00650 
00651 int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid,
00652                        const char *pin)
00653 {
00654         struct wpa_ssid *ssid;
00655         char val[128];
00656         unsigned int rpin = 0;
00657 
00658         wpas_clear_wps(wpa_s);
00659         ssid = wpas_wps_add_network(wpa_s, 0, bssid);
00660         if (ssid == NULL)
00661                 return -1;
00662         if (pin)
00663                 os_snprintf(val, sizeof(val), "\"pin=%s\"", pin);
00664         else {
00665                 rpin = wps_generate_pin();
00666                 os_snprintf(val, sizeof(val), "\"pin=%08d\"", rpin);
00667         }
00668         wpa_config_set(ssid, "phase1", val, 0);
00669         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
00670                                wpa_s, NULL);
00671         wpas_wps_reassoc(wpa_s, ssid);
00672         return rpin;
00673 }
00674 
00675 
00676 #ifdef CONFIG_WPS_OOB
00677 int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type,
00678                        char *path, char *method, char *name)
00679 {
00680         struct wps_context *wps = wpa_s->wps;
00681         struct oob_device_data *oob_dev;
00682 
00683         oob_dev = wps_get_oob_device(device_type);
00684         if (oob_dev == NULL)
00685                 return -1;
00686         oob_dev->device_path = path;
00687         oob_dev->device_name = name;
00688         wps->oob_conf.oob_method = wps_get_oob_method(method);
00689 
00690         if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) {
00691                 /*
00692                  * Use pre-configured DH keys in order to be able to write the
00693                  * key hash into the OOB file.
00694                  */
00695                 wpabuf_free(wps->dh_pubkey);
00696                 wpabuf_free(wps->dh_privkey);
00697                 wps->dh_privkey = NULL;
00698                 wps->dh_pubkey = NULL;
00699                 dh5_free(wps->dh_ctx);
00700                 wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey);
00701                 wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192);
00702                 if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) {
00703                         wpa_printf(MSG_ERROR, "WPS: Failed to initialize "
00704                                    "Diffie-Hellman handshake");
00705                         return -1;
00706                 }
00707         }
00708 
00709         if (wps->oob_conf.oob_method == OOB_METHOD_CRED)
00710                 wpas_clear_wps(wpa_s);
00711 
00712         if (wps_process_oob(wps, oob_dev, 0) < 0)
00713                 return -1;
00714 
00715         if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E ||
00716              wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) &&
00717             wpas_wps_start_pin(wpa_s, NULL,
00718                                wpabuf_head(wps->oob_conf.dev_password)) < 0)
00719                         return -1;
00720 
00721         return 0;
00722 }
00723 #endif /* CONFIG_WPS_OOB */
00724 
00725 
00726 int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid,
00727                        const char *pin, struct wps_new_ap_settings *settings)
00728 {
00729         struct wpa_ssid *ssid;
00730         char val[200];
00731         char *pos, *end;
00732         int res;
00733 
00734         if (!pin)
00735                 return -1;
00736         wpas_clear_wps(wpa_s);
00737         ssid = wpas_wps_add_network(wpa_s, 1, bssid);
00738         if (ssid == NULL)
00739                 return -1;
00740         pos = val;
00741         end = pos + sizeof(val);
00742         res = os_snprintf(pos, end - pos, "\"pin=%s", pin);
00743         if (res < 0 || res >= end - pos)
00744                 return -1;
00745         pos += res;
00746         if (settings) {
00747                 res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s "
00748                                   "new_encr=%s new_key=%s",
00749                                   settings->ssid_hex, settings->auth,
00750                                   settings->encr, settings->key_hex);
00751                 if (res < 0 || res >= end - pos)
00752                         return -1;
00753                 pos += res;
00754         }
00755         res = os_snprintf(pos, end - pos, "\"");
00756         if (res < 0 || res >= end - pos)
00757                 return -1;
00758         wpa_config_set(ssid, "phase1", val, 0);
00759         eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout,
00760                                wpa_s, NULL);
00761         wpas_wps_reassoc(wpa_s, ssid);
00762         return 0;
00763 }
00764 
00765 
00766 static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk,
00767                                size_t psk_len)
00768 {
00769         wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for "
00770                    "STA " MACSTR, MAC2STR(mac_addr));
00771         wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len);
00772 
00773         /* TODO */
00774 
00775         return 0;
00776 }
00777 
00778 
00779 static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e,
00780                                    const struct wps_device_data *dev)
00781 {
00782         char uuid[40], txt[400];
00783         int len;
00784         char devtype[WPS_DEV_TYPE_BUFSIZE];
00785         if (uuid_bin2str(uuid_e, uuid, sizeof(uuid)))
00786                 return;
00787         wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid);
00788         len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR
00789                           " [%s|%s|%s|%s|%s|%s]",
00790                           uuid, MAC2STR(dev->mac_addr), dev->device_name,
00791                           dev->manufacturer, dev->model_name,
00792                           dev->model_number, dev->serial_number,
00793                           wps_dev_type_bin2str(dev->pri_dev_type, devtype,
00794                                                sizeof(devtype)));
00795         if (len > 0 && len < (int) sizeof(txt))
00796                 wpa_printf(MSG_INFO, "%s", txt);
00797 }
00798 
00799 
00800 static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id,
00801                                     u16 sel_reg_config_methods)
00802 {
00803 #ifdef CONFIG_WPS_ER
00804         struct wpa_supplicant *wpa_s = ctx;
00805 
00806         if (wpa_s->wps_er == NULL)
00807                 return;
00808         wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id,
00809                            sel_reg_config_methods);
00810 #endif /* CONFIG_WPS_ER */
00811 }
00812 
00813 
00814 int wpas_wps_init(struct wpa_supplicant *wpa_s)
00815 {
00816         struct wps_context *wps;
00817         struct wps_registrar_config rcfg;
00818 
00819         wps = os_zalloc(sizeof(*wps));
00820         if (wps == NULL)
00821                 return -1;
00822 
00823         wps->cred_cb = wpa_supplicant_wps_cred;
00824         wps->event_cb = wpa_supplicant_wps_event;
00825         wps->cb_ctx = wpa_s;
00826 
00827         wps->dev.device_name = wpa_s->conf->device_name;
00828         wps->dev.manufacturer = wpa_s->conf->manufacturer;
00829         wps->dev.model_name = wpa_s->conf->model_name;
00830         wps->dev.model_number = wpa_s->conf->model_number;
00831         wps->dev.serial_number = wpa_s->conf->serial_number;
00832         wps->config_methods =
00833                 wps_config_methods_str2bin(wpa_s->conf->config_methods);
00834         if (wpa_s->conf->device_type &&
00835             wps_dev_type_str2bin(wpa_s->conf->device_type,
00836                                  wps->dev.pri_dev_type) < 0) {
00837                 wpa_printf(MSG_ERROR, "WPS: Invalid device_type");
00838                 os_free(wps);
00839                 return -1;
00840         }
00841         wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version);
00842         wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */
00843         os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN);
00844         if (is_nil_uuid(wpa_s->conf->uuid)) {
00845                 uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid);
00846                 wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC address",
00847                             wps->uuid, WPS_UUID_LEN);
00848         } else
00849                 os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN);
00850 
00851         wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK;
00852         wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP;
00853 
00854         os_memset(&rcfg, 0, sizeof(rcfg));
00855         rcfg.new_psk_cb = wpas_wps_new_psk_cb;
00856         rcfg.pin_needed_cb = wpas_wps_pin_needed_cb;
00857         rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb;
00858         rcfg.cb_ctx = wpa_s;
00859 
00860         wps->registrar = wps_registrar_init(wps, &rcfg);
00861         if (wps->registrar == NULL) {
00862                 wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar");
00863                 os_free(wps);
00864                 return -1;
00865         }
00866 
00867         wpa_s->wps = wps;
00868 
00869         return 0;
00870 }
00871 
00872 
00873 void wpas_wps_deinit(struct wpa_supplicant *wpa_s)
00874 {
00875         eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL);
00876 
00877         if (wpa_s->wps == NULL)
00878                 return;
00879 
00880 #ifdef CONFIG_WPS_ER
00881         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
00882         wpa_s->wps_er = NULL;
00883 #endif /* CONFIG_WPS_ER */
00884 
00885         wps_registrar_deinit(wpa_s->wps->registrar);
00886         wpabuf_free(wpa_s->wps->dh_pubkey);
00887         wpabuf_free(wpa_s->wps->dh_privkey);
00888         wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash);
00889         wpabuf_free(wpa_s->wps->oob_conf.dev_password);
00890         os_free(wpa_s->wps->network_key);
00891         os_free(wpa_s->wps);
00892         wpa_s->wps = NULL;
00893 }
00894 
00895 
00896 int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s,
00897                             struct wpa_ssid *ssid, struct wpa_scan_res *bss)
00898 {
00899         struct wpabuf *wps_ie;
00900 
00901         if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS))
00902                 return -1;
00903 
00904         wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
00905         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
00906                 if (!wps_ie) {
00907                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
00908                         return 0;
00909                 }
00910 
00911                 if (!wps_is_selected_pbc_registrar(wps_ie)) {
00912                         wpa_printf(MSG_DEBUG, "   skip - WPS AP "
00913                                    "without active PBC Registrar");
00914                         wpabuf_free(wps_ie);
00915                         return 0;
00916                 }
00917 
00918                 /* TODO: overlap detection */
00919                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
00920                            "(Active PBC)");
00921                 wpabuf_free(wps_ie);
00922                 return 1;
00923         }
00924 
00925         if (eap_is_wps_pin_enrollee(&ssid->eap)) {
00926                 if (!wps_ie) {
00927                         wpa_printf(MSG_DEBUG, "   skip - non-WPS AP");
00928                         return 0;
00929                 }
00930 
00931                 /*
00932                  * Start with WPS APs that advertise active PIN Registrar and
00933                  * allow any WPS AP after third scan since some APs do not set
00934                  * Selected Registrar attribute properly when using external
00935                  * Registrar.
00936                  */
00937                 if (!wps_is_selected_pin_registrar(wps_ie)) {
00938                         if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) {
00939                                 wpa_printf(MSG_DEBUG, "   skip - WPS AP "
00940                                            "without active PIN Registrar");
00941                                 wpabuf_free(wps_ie);
00942                                 return 0;
00943                         }
00944                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
00945                 } else {
00946                         wpa_printf(MSG_DEBUG, "   selected based on WPS IE "
00947                                    "(Active PIN)");
00948                 }
00949                 wpabuf_free(wps_ie);
00950                 return 1;
00951         }
00952 
00953         if (wps_ie) {
00954                 wpa_printf(MSG_DEBUG, "   selected based on WPS IE");
00955                 wpabuf_free(wps_ie);
00956                 return 1;
00957         }
00958 
00959         return -1;
00960 }
00961 
00962 
00963 int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s,
00964                               struct wpa_ssid *ssid,
00965                               struct wpa_scan_res *bss)
00966 {
00967         struct wpabuf *wps_ie = NULL;
00968         int ret = 0;
00969 
00970         if (eap_is_wps_pbc_enrollee(&ssid->eap)) {
00971                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
00972                 if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) {
00973                         /* allow wildcard SSID for WPS PBC */
00974                         ret = 1;
00975                 }
00976         } else if (eap_is_wps_pin_enrollee(&ssid->eap)) {
00977                 wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
00978                 if (wps_ie &&
00979                     (wps_is_selected_pin_registrar(wps_ie) ||
00980                      wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) {
00981                         /* allow wildcard SSID for WPS PIN */
00982                         ret = 1;
00983                 }
00984         }
00985 
00986         if (!ret && ssid->bssid_set &&
00987             os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) {
00988                 /* allow wildcard SSID due to hardcoded BSSID match */
00989                 ret = 1;
00990         }
00991 
00992         wpabuf_free(wps_ie);
00993 
00994         return ret;
00995 }
00996 
00997 
00998 int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s,
00999                               struct wpa_bss *selected, struct wpa_ssid *ssid)
01000 {
01001         const u8 *sel_uuid, *uuid;
01002         struct wpabuf *wps_ie;
01003         int ret = 0;
01004         struct wpa_bss *bss;
01005 
01006         if (!eap_is_wps_pbc_enrollee(&ssid->eap))
01007                 return 0;
01008 
01009         /* Make sure that only one AP is in active PBC mode */
01010         wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE);
01011         if (wps_ie)
01012                 sel_uuid = wps_get_uuid_e(wps_ie);
01013         else
01014                 sel_uuid = NULL;
01015 
01016         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
01017                 struct wpabuf *ie;
01018                 if (bss == selected)
01019                         continue;
01020                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
01021                 if (!ie)
01022                         continue;
01023                 if (!wps_is_selected_pbc_registrar(ie)) {
01024                         wpabuf_free(ie);
01025                         continue;
01026                 }
01027                 uuid = wps_get_uuid_e(ie);
01028                 if (sel_uuid == NULL || uuid == NULL ||
01029                     os_memcmp(sel_uuid, uuid, 16) != 0) {
01030                         ret = 1; /* PBC overlap */
01031                         wpabuf_free(ie);
01032                         break;
01033                 }
01034 
01035                 /* TODO: verify that this is reasonable dual-band situation */
01036 
01037                 wpabuf_free(ie);
01038         }
01039 
01040         wpabuf_free(wps_ie);
01041 
01042         return ret;
01043 }
01044 
01045 
01046 void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s)
01047 {
01048         struct wpa_bss *bss;
01049 
01050         if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED)
01051                 return;
01052 
01053         dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) {
01054                 struct wpabuf *ie;
01055                 ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE);
01056                 if (!ie)
01057                         continue;
01058                 if (wps_is_selected_pbc_registrar(ie))
01059                         wpa_msg_ctrl(wpa_s, MSG_INFO,
01060                                      WPS_EVENT_AP_AVAILABLE_PBC);
01061                 else if (wps_is_selected_pin_registrar(ie))
01062                         wpa_msg_ctrl(wpa_s, MSG_INFO,
01063                                      WPS_EVENT_AP_AVAILABLE_PIN);
01064                 else
01065                         wpa_msg_ctrl(wpa_s, MSG_INFO,
01066                                      WPS_EVENT_AP_AVAILABLE);
01067                 wpabuf_free(ie);
01068                 break;
01069         }
01070 }
01071 
01072 
01073 int wpas_wps_searching(struct wpa_supplicant *wpa_s)
01074 {
01075         struct wpa_ssid *ssid;
01076 
01077         for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) {
01078                 if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled)
01079                         return 1;
01080         }
01081 
01082         return 0;
01083 }
01084 
01085 
01086 int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf,
01087                               char *end)
01088 {
01089         struct wpabuf *wps_ie;
01090         int ret;
01091 
01092         wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA);
01093         if (wps_ie == NULL)
01094                 return 0;
01095 
01096         ret = wps_attr_text(wps_ie, buf, end);
01097         wpabuf_free(wps_ie);
01098         return ret;
01099 }
01100 
01101 
01102 int wpas_wps_er_start(struct wpa_supplicant *wpa_s)
01103 {
01104 #ifdef CONFIG_WPS_ER
01105         if (wpa_s->wps_er) {
01106                 wps_er_refresh(wpa_s->wps_er);
01107                 return 0;
01108         }
01109         wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname);
01110         if (wpa_s->wps_er == NULL)
01111                 return -1;
01112         return 0;
01113 #else /* CONFIG_WPS_ER */
01114         return 0;
01115 #endif /* CONFIG_WPS_ER */
01116 }
01117 
01118 
01119 int wpas_wps_er_stop(struct wpa_supplicant *wpa_s)
01120 {
01121 #ifdef CONFIG_WPS_ER
01122         wps_er_deinit(wpa_s->wps_er, NULL, NULL);
01123         wpa_s->wps_er = NULL;
01124 #endif /* CONFIG_WPS_ER */
01125         return 0;
01126 }
01127 
01128 
01129 #ifdef CONFIG_WPS_ER
01130 int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const char *uuid,
01131                         const char *pin)
01132 {
01133         u8 u[UUID_LEN];
01134         int any = 0;
01135 
01136         if (os_strcmp(uuid, "any") == 0)
01137                 any = 1;
01138         else if (uuid_str2bin(uuid, u))
01139                 return -1;
01140         return wps_registrar_add_pin(wpa_s->wps->registrar, any ? NULL : u,
01141                                      (const u8 *) pin, os_strlen(pin), 300);
01142 }
01143 
01144 
01145 int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid)
01146 {
01147         u8 u[UUID_LEN];
01148 
01149         if (uuid_str2bin(uuid, u))
01150                 return -1;
01151         return wps_er_pbc(wpa_s->wps_er, u);
01152 }
01153 
01154 
01155 int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid,
01156                       const char *pin)
01157 {
01158         u8 u[UUID_LEN];
01159 
01160         if (uuid_str2bin(uuid, u))
01161                 return -1;
01162         return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin,
01163                             os_strlen(pin));
01164 }
01165 
01166 
01167 static void wpas_wps_terminate_cb(void *ctx)
01168 {
01169         wpa_printf(MSG_DEBUG, "WPS ER: Terminated");
01170         eloop_terminate();
01171 }
01172 #endif /* CONFIG_WPS_ER */
01173 
01174 
01175 int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s)
01176 {
01177 #ifdef CONFIG_WPS_ER
01178         if (wpa_s->wps_er) {
01179                 wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s);
01180                 wpa_s->wps_er = NULL;
01181                 return 1;
01182         }
01183 #endif /* CONFIG_WPS_ER */
01184         return 0;
01185 }