From 8d520ff1dc2da35cdca849e982051b86468016d8 Mon Sep 17 00:00:00 2001 From: Dmitry Shmidt Date: Mon, 9 May 2011 14:06:53 -0700 Subject: wpa_supplicant: Initial Revision 0.8.X Based on: commit 0725cc7b7efc434910e89865c42eda7ce61bbf08 Author: Jouni Malinen Date: Thu Apr 21 20:41:01 2011 +0300 Enable CONFIG_DRIVER_NL80211=y in the default configuration nl80211 should be preferred over WEXT with any recent Linux kernel version. Change-Id: I26aec5afbbd4f4a1f5fd900912545b6f5050de64 Signed-off-by: Dmitry Shmidt --- wpa_supplicant/wps_supplicant.c | 1676 +++++++++++++++++++++++++++++++++++++++ 1 file changed, 1676 insertions(+) create mode 100644 wpa_supplicant/wps_supplicant.c (limited to 'wpa_supplicant/wps_supplicant.c') diff --git a/wpa_supplicant/wps_supplicant.c b/wpa_supplicant/wps_supplicant.c new file mode 100644 index 0000000..778ccaf --- /dev/null +++ b/wpa_supplicant/wps_supplicant.c @@ -0,0 +1,1676 @@ +/* + * wpa_supplicant / WPS integration + * Copyright (c) 2008-2010, Jouni Malinen + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of the GNU General Public License version 2 as + * published by the Free Software Foundation. + * + * Alternatively, this software may be distributed under the terms of BSD + * license. + * + * See README and COPYING for more details. + */ + +#include "includes.h" + +#include "common.h" +#include "eloop.h" +#include "uuid.h" +#include "crypto/dh_group5.h" +#include "common/ieee802_11_defs.h" +#include "common/ieee802_11_common.h" +#include "common/wpa_common.h" +#include "common/wpa_ctrl.h" +#include "eap_common/eap_wsc_common.h" +#include "eap_peer/eap.h" +#include "rsn_supp/wpa.h" +#include "config.h" +#include "wpa_supplicant_i.h" +#include "driver_i.h" +#include "notify.h" +#include "blacklist.h" +#include "bss.h" +#include "scan.h" +#include "ap.h" +#include "p2p/p2p.h" +#include "p2p_supplicant.h" +#include "wps_supplicant.h" + + +#ifndef WPS_PIN_SCAN_IGNORE_SEL_REG +#define WPS_PIN_SCAN_IGNORE_SEL_REG 3 +#endif /* WPS_PIN_SCAN_IGNORE_SEL_REG */ + +static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx); +static void wpas_clear_wps(struct wpa_supplicant *wpa_s); + + +int wpas_wps_eapol_cb(struct wpa_supplicant *wpa_s) +{ + if (!wpa_s->wps_success && + wpa_s->current_ssid && + eap_is_wps_pin_enrollee(&wpa_s->current_ssid->eap)) { + const u8 *bssid = wpa_s->bssid; + if (is_zero_ether_addr(bssid)) + bssid = wpa_s->pending_bssid; + + wpa_printf(MSG_DEBUG, "WPS: PIN registration with " MACSTR + " did not succeed - continue trying to find " + "suitable AP", MAC2STR(bssid)); + wpa_blacklist_add(wpa_s, bssid); + + wpa_supplicant_deauthenticate(wpa_s, + WLAN_REASON_DEAUTH_LEAVING); + wpa_s->reassociate = 1; + wpa_supplicant_req_scan(wpa_s, + wpa_s->blacklist_cleared ? 5 : 0, 0); + wpa_s->blacklist_cleared = 0; + return 1; + } + + eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); + if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && !wpa_s->wps_success) + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_FAIL); + + if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid && + !(wpa_s->current_ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { + int disabled = wpa_s->current_ssid->disabled; + wpa_printf(MSG_DEBUG, "WPS: Network configuration replaced - " + "try to associate with the received credential"); + wpa_supplicant_deauthenticate(wpa_s, + WLAN_REASON_DEAUTH_LEAVING); + if (disabled) { + wpa_printf(MSG_DEBUG, "WPS: Current network is " + "disabled - wait for user to enable"); + return 1; + } + wpa_s->after_wps = 5; + wpa_s->wps_freq = wpa_s->assoc_freq; + wpa_s->reassociate = 1; + wpa_supplicant_req_scan(wpa_s, 0, 0); + return 1; + } + + if (wpa_s->key_mgmt == WPA_KEY_MGMT_WPS && wpa_s->current_ssid) { + wpa_printf(MSG_DEBUG, "WPS: Registration completed - waiting " + "for external credential processing"); + wpas_clear_wps(wpa_s); + wpa_supplicant_deauthenticate(wpa_s, + WLAN_REASON_DEAUTH_LEAVING); + return 1; + } + + return 0; +} + + +static void wpas_wps_security_workaround(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid, + const struct wps_credential *cred) +{ + struct wpa_driver_capa capa; + struct wpa_bss *bss; + const u8 *ie; + struct wpa_ie_data adv; + int wpa2 = 0, ccmp = 0; + + /* + * Many existing WPS APs do not know how to negotiate WPA2 or CCMP in + * case they are configured for mixed mode operation (WPA+WPA2 and + * TKIP+CCMP). Try to use scan results to figure out whether the AP + * actually supports stronger security and select that if the client + * has support for it, too. + */ + + if (wpa_drv_get_capa(wpa_s, &capa)) + return; /* Unknown what driver supports */ + + bss = wpa_bss_get(wpa_s, cred->mac_addr, ssid->ssid, ssid->ssid_len); + if (bss == NULL) { + wpa_printf(MSG_DEBUG, "WPS: The AP was not found from BSS " + "table - use credential as-is"); + return; + } + + wpa_printf(MSG_DEBUG, "WPS: AP found from BSS table"); + + ie = wpa_bss_get_ie(bss, WLAN_EID_RSN); + if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0) { + wpa2 = 1; + if (adv.pairwise_cipher & WPA_CIPHER_CCMP) + ccmp = 1; + } else { + ie = wpa_bss_get_vendor_ie(bss, WPA_IE_VENDOR_TYPE); + if (ie && wpa_parse_wpa_ie(ie, 2 + ie[1], &adv) == 0 && + adv.pairwise_cipher & WPA_CIPHER_CCMP) + ccmp = 1; + } + + if (ie == NULL && (ssid->proto & WPA_PROTO_WPA) && + (ssid->pairwise_cipher & WPA_CIPHER_TKIP)) { + /* + * TODO: This could be the initial AP configuration and the + * Beacon contents could change shortly. Should request a new + * scan and delay addition of the network until the updated + * scan results are available. + */ + wpa_printf(MSG_DEBUG, "WPS: The AP did not yet advertise WPA " + "support - use credential as-is"); + return; + } + + if (ccmp && !(ssid->pairwise_cipher & WPA_CIPHER_CCMP) && + (ssid->pairwise_cipher & WPA_CIPHER_TKIP) && + (capa.key_mgmt & WPA_DRIVER_CAPA_KEY_MGMT_WPA2_PSK)) { + wpa_printf(MSG_DEBUG, "WPS: Add CCMP into the credential " + "based on scan results"); + if (wpa_s->conf->ap_scan == 1) + ssid->pairwise_cipher |= WPA_CIPHER_CCMP; + else + ssid->pairwise_cipher = WPA_CIPHER_CCMP; + } + + if (wpa2 && !(ssid->proto & WPA_PROTO_RSN) && + (ssid->proto & WPA_PROTO_WPA) && + (capa.enc & WPA_DRIVER_CAPA_ENC_CCMP)) { + wpa_printf(MSG_DEBUG, "WPS: Add WPA2 into the credential " + "based on scan results"); + if (wpa_s->conf->ap_scan == 1) + ssid->proto |= WPA_PROTO_RSN; + else + ssid->proto = WPA_PROTO_RSN; + } +} + + +static int wpa_supplicant_wps_cred(void *ctx, + const struct wps_credential *cred) +{ + struct wpa_supplicant *wpa_s = ctx; + struct wpa_ssid *ssid = wpa_s->current_ssid; + u8 key_idx = 0; + u16 auth_type; + int registrar = 0; + + if ((wpa_s->conf->wps_cred_processing == 1 || + wpa_s->conf->wps_cred_processing == 2) && cred->cred_attr) { + size_t blen = cred->cred_attr_len * 2 + 1; + char *buf = os_malloc(blen); + if (buf) { + wpa_snprintf_hex(buf, blen, + cred->cred_attr, cred->cred_attr_len); + wpa_msg(wpa_s, MSG_INFO, "%s%s", + WPS_EVENT_CRED_RECEIVED, buf); + os_free(buf); + } + + wpas_notify_wps_credential(wpa_s, cred); + } else + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_CRED_RECEIVED); + + wpa_hexdump_key(MSG_DEBUG, "WPS: Received Credential attribute", + cred->cred_attr, cred->cred_attr_len); + + if (wpa_s->conf->wps_cred_processing == 1) + return 0; + + wpa_hexdump_ascii(MSG_DEBUG, "WPS: SSID", cred->ssid, cred->ssid_len); + wpa_printf(MSG_DEBUG, "WPS: Authentication Type 0x%x", + cred->auth_type); + wpa_printf(MSG_DEBUG, "WPS: Encryption Type 0x%x", cred->encr_type); + wpa_printf(MSG_DEBUG, "WPS: Network Key Index %d", cred->key_idx); + wpa_hexdump_key(MSG_DEBUG, "WPS: Network Key", + cred->key, cred->key_len); + wpa_printf(MSG_DEBUG, "WPS: MAC Address " MACSTR, + MAC2STR(cred->mac_addr)); + + auth_type = cred->auth_type; + if (auth_type == (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { + wpa_printf(MSG_DEBUG, "WPS: Workaround - convert mixed-mode " + "auth_type into WPA2PSK"); + auth_type = WPS_AUTH_WPA2PSK; + } + + if (auth_type != WPS_AUTH_OPEN && + auth_type != WPS_AUTH_SHARED && + auth_type != WPS_AUTH_WPAPSK && + auth_type != WPS_AUTH_WPA2PSK) { + wpa_printf(MSG_DEBUG, "WPS: Ignored credentials for " + "unsupported authentication type 0x%x", + auth_type); + return 0; + } + + if (ssid && (ssid->key_mgmt & WPA_KEY_MGMT_WPS)) { + wpa_printf(MSG_DEBUG, "WPS: Replace WPS network block based " + "on the received credential"); + if (ssid->eap.identity && + ssid->eap.identity_len == WSC_ID_REGISTRAR_LEN && + os_memcmp(ssid->eap.identity, WSC_ID_REGISTRAR, + WSC_ID_REGISTRAR_LEN) == 0) + registrar = 1; + os_free(ssid->eap.identity); + ssid->eap.identity = NULL; + ssid->eap.identity_len = 0; + os_free(ssid->eap.phase1); + ssid->eap.phase1 = NULL; + os_free(ssid->eap.eap_methods); + ssid->eap.eap_methods = NULL; + if (!ssid->p2p_group) + ssid->temporary = 0; + } else { + wpa_printf(MSG_DEBUG, "WPS: Create a new network based on the " + "received credential"); + ssid = wpa_config_add_network(wpa_s->conf); + if (ssid == NULL) + return -1; + wpas_notify_network_added(wpa_s, ssid); + } + + wpa_config_set_network_defaults(ssid); + + os_free(ssid->ssid); + ssid->ssid = os_malloc(cred->ssid_len); + if (ssid->ssid) { + os_memcpy(ssid->ssid, cred->ssid, cred->ssid_len); + ssid->ssid_len = cred->ssid_len; + } + + switch (cred->encr_type) { + case WPS_ENCR_NONE: + break; + case WPS_ENCR_WEP: + if (cred->key_len <= 0) + break; + if (cred->key_len != 5 && cred->key_len != 13 && + cred->key_len != 10 && cred->key_len != 26) { + wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key length " + "%lu", (unsigned long) cred->key_len); + return -1; + } + if (cred->key_idx > NUM_WEP_KEYS) { + wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key index %d", + cred->key_idx); + return -1; + } + if (cred->key_idx) + key_idx = cred->key_idx - 1; + if (cred->key_len == 10 || cred->key_len == 26) { + if (hexstr2bin((char *) cred->key, + ssid->wep_key[key_idx], + cred->key_len / 2) < 0) { + wpa_printf(MSG_ERROR, "WPS: Invalid WEP Key " + "%d", key_idx); + return -1; + } + ssid->wep_key_len[key_idx] = cred->key_len / 2; + } else { + os_memcpy(ssid->wep_key[key_idx], cred->key, + cred->key_len); + ssid->wep_key_len[key_idx] = cred->key_len; + } + ssid->wep_tx_keyidx = key_idx; + break; + case WPS_ENCR_TKIP: + ssid->pairwise_cipher = WPA_CIPHER_TKIP; + break; + case WPS_ENCR_AES: + ssid->pairwise_cipher = WPA_CIPHER_CCMP; + break; + } + + switch (auth_type) { + case WPS_AUTH_OPEN: + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_NONE; + ssid->proto = 0; +#ifdef CONFIG_WPS_REG_DISABLE_OPEN + if (registrar) { + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_OPEN_NETWORK + "id=%d - Credentials for an open " + "network disabled by default - use " + "'select_network %d' to enable", + ssid->id, ssid->id); + ssid->disabled = 1; + } +#endif /* CONFIG_WPS_REG_DISABLE_OPEN */ + break; + case WPS_AUTH_SHARED: + ssid->auth_alg = WPA_AUTH_ALG_SHARED; + ssid->key_mgmt = WPA_KEY_MGMT_NONE; + ssid->proto = 0; + break; + case WPS_AUTH_WPAPSK: + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_PSK; + ssid->proto = WPA_PROTO_WPA; + break; + case WPS_AUTH_WPA: + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; + ssid->proto = WPA_PROTO_WPA; + break; + case WPS_AUTH_WPA2: + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_IEEE8021X; + ssid->proto = WPA_PROTO_RSN; + break; + case WPS_AUTH_WPA2PSK: + ssid->auth_alg = WPA_AUTH_ALG_OPEN; + ssid->key_mgmt = WPA_KEY_MGMT_PSK; + ssid->proto = WPA_PROTO_RSN; + break; + } + + if (ssid->key_mgmt == WPA_KEY_MGMT_PSK) { + if (cred->key_len == 2 * PMK_LEN) { + if (hexstr2bin((const char *) cred->key, ssid->psk, + PMK_LEN)) { + wpa_printf(MSG_ERROR, "WPS: Invalid Network " + "Key"); + return -1; + } + ssid->psk_set = 1; + ssid->export_keys = 1; + } else if (cred->key_len >= 8 && cred->key_len < 2 * PMK_LEN) { + os_free(ssid->passphrase); + ssid->passphrase = os_malloc(cred->key_len + 1); + if (ssid->passphrase == NULL) + return -1; + os_memcpy(ssid->passphrase, cred->key, cred->key_len); + ssid->passphrase[cred->key_len] = '\0'; + wpa_config_update_psk(ssid); + ssid->export_keys = 1; + } else { + wpa_printf(MSG_ERROR, "WPS: Invalid Network Key " + "length %lu", + (unsigned long) cred->key_len); + return -1; + } + } + + wpas_wps_security_workaround(wpa_s, ssid, cred); + +#ifndef CONFIG_NO_CONFIG_WRITE + if (wpa_s->conf->update_config && + wpa_config_write(wpa_s->confname, wpa_s->conf)) { + wpa_printf(MSG_DEBUG, "WPS: Failed to update configuration"); + return -1; + } +#endif /* CONFIG_NO_CONFIG_WRITE */ + + return 0; +} + + +#ifdef CONFIG_P2P +static void wpas_wps_pbc_overlap_cb(void *eloop_ctx, void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + wpas_p2p_notif_pbc_overlap(wpa_s); +} +#endif /* CONFIG_P2P */ + + +static void wpa_supplicant_wps_event_m2d(struct wpa_supplicant *wpa_s, + struct wps_event_m2d *m2d) +{ + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_M2D + "dev_password_id=%d config_error=%d", + m2d->dev_password_id, m2d->config_error); + wpas_notify_wps_event_m2d(wpa_s, m2d); +#ifdef CONFIG_P2P + if (wpa_s->parent && wpa_s->parent != wpa_s) { + wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_M2D + "dev_password_id=%d config_error=%d", + m2d->dev_password_id, m2d->config_error); + } + if (m2d->config_error == WPS_CFG_MULTIPLE_PBC_DETECTED) { + /* + * Notify P2P from eloop timeout to avoid issues with the + * interface getting removed while processing a message. + */ + eloop_register_timeout(0, 0, wpas_wps_pbc_overlap_cb, wpa_s, + NULL); + } +#endif /* CONFIG_P2P */ +} + + +static const char * wps_event_fail_reason[NUM_WPS_EI_VALUES] = { + "No Error", /* WPS_EI_NO_ERROR */ + "TKIP Only Prohibited", /* WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED */ + "WEP Prohibited" /* WPS_EI_SECURITY_WEP_PROHIBITED */ +}; + +static void wpa_supplicant_wps_event_fail(struct wpa_supplicant *wpa_s, + struct wps_event_fail *fail) +{ + if (fail->error_indication > 0 && + fail->error_indication < NUM_WPS_EI_VALUES) { + wpa_msg(wpa_s, MSG_INFO, + WPS_EVENT_FAIL "msg=%d config_error=%d reason=%d (%s)", + fail->msg, fail->config_error, fail->error_indication, + wps_event_fail_reason[fail->error_indication]); + if (wpa_s->parent && wpa_s->parent != wpa_s) + wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL + "msg=%d config_error=%d reason=%d (%s)", + fail->msg, fail->config_error, + fail->error_indication, + wps_event_fail_reason[fail->error_indication]); + } else { + wpa_msg(wpa_s, MSG_INFO, + WPS_EVENT_FAIL "msg=%d config_error=%d", + fail->msg, fail->config_error); + if (wpa_s->parent && wpa_s->parent != wpa_s) + wpa_msg(wpa_s->parent, MSG_INFO, WPS_EVENT_FAIL + "msg=%d config_error=%d", + fail->msg, fail->config_error); + } + wpas_clear_wps(wpa_s); + wpas_notify_wps_event_fail(wpa_s, fail); +} + + +static void wpa_supplicant_wps_event_success(struct wpa_supplicant *wpa_s) +{ + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_SUCCESS); + wpa_s->wps_success = 1; + wpas_notify_wps_event_success(wpa_s); +#ifdef CONFIG_P2P + wpas_p2p_wps_success(wpa_s, wpa_s->bssid, 0); +#endif /* CONFIG_P2P */ +} + + +static void wpa_supplicant_wps_event_er_ap_add(struct wpa_supplicant *wpa_s, + struct wps_event_er_ap *ap) +{ + char uuid_str[100]; + char dev_type[WPS_DEV_TYPE_BUFSIZE]; + + uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); + if (ap->pri_dev_type) + wps_dev_type_bin2str(ap->pri_dev_type, dev_type, + sizeof(dev_type)); + else + dev_type[0] = '\0'; + + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_ADD "%s " MACSTR + " pri_dev_type=%s wps_state=%d |%s|%s|%s|%s|%s|%s|", + uuid_str, MAC2STR(ap->mac_addr), dev_type, ap->wps_state, + ap->friendly_name ? ap->friendly_name : "", + ap->manufacturer ? ap->manufacturer : "", + ap->model_description ? ap->model_description : "", + ap->model_name ? ap->model_name : "", + ap->manufacturer_url ? ap->manufacturer_url : "", + ap->model_url ? ap->model_url : ""); +} + + +static void wpa_supplicant_wps_event_er_ap_remove(struct wpa_supplicant *wpa_s, + struct wps_event_er_ap *ap) +{ + char uuid_str[100]; + uuid_bin2str(ap->uuid, uuid_str, sizeof(uuid_str)); + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_REMOVE "%s", uuid_str); +} + + +static void wpa_supplicant_wps_event_er_enrollee_add( + struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) +{ + char uuid_str[100]; + char dev_type[WPS_DEV_TYPE_BUFSIZE]; + + uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); + if (enrollee->pri_dev_type) + wps_dev_type_bin2str(enrollee->pri_dev_type, dev_type, + sizeof(dev_type)); + else + dev_type[0] = '\0'; + + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_ADD "%s " MACSTR + " M1=%d config_methods=0x%x dev_passwd_id=%d pri_dev_type=%s " + "|%s|%s|%s|%s|%s|", + uuid_str, MAC2STR(enrollee->mac_addr), enrollee->m1_received, + enrollee->config_methods, enrollee->dev_passwd_id, dev_type, + enrollee->dev_name ? enrollee->dev_name : "", + enrollee->manufacturer ? enrollee->manufacturer : "", + enrollee->model_name ? enrollee->model_name : "", + enrollee->model_number ? enrollee->model_number : "", + enrollee->serial_number ? enrollee->serial_number : ""); +} + + +static void wpa_supplicant_wps_event_er_enrollee_remove( + struct wpa_supplicant *wpa_s, struct wps_event_er_enrollee *enrollee) +{ + char uuid_str[100]; + uuid_bin2str(enrollee->uuid, uuid_str, sizeof(uuid_str)); + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_ENROLLEE_REMOVE "%s " MACSTR, + uuid_str, MAC2STR(enrollee->mac_addr)); +} + + +static void wpa_supplicant_wps_event_er_ap_settings( + struct wpa_supplicant *wpa_s, + struct wps_event_er_ap_settings *ap_settings) +{ + char uuid_str[100]; + char key_str[65]; + const struct wps_credential *cred = ap_settings->cred; + + key_str[0] = '\0'; + if (cred->auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) { + if (cred->key_len >= 8 && cred->key_len <= 64) { + os_memcpy(key_str, cred->key, cred->key_len); + key_str[cred->key_len] = '\0'; + } + } + + uuid_bin2str(ap_settings->uuid, uuid_str, sizeof(uuid_str)); + /* Use wpa_msg_ctrl to avoid showing the key in debug log */ + wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_ER_AP_SETTINGS + "uuid=%s ssid=%s auth_type=0x%04x encr_type=0x%04x " + "key=%s", + uuid_str, wpa_ssid_txt(cred->ssid, cred->ssid_len), + cred->auth_type, cred->encr_type, key_str); +} + + +static void wpa_supplicant_wps_event_er_set_sel_reg( + struct wpa_supplicant *wpa_s, + struct wps_event_er_set_selected_registrar *ev) +{ + char uuid_str[100]; + + uuid_bin2str(ev->uuid, uuid_str, sizeof(uuid_str)); + switch (ev->state) { + case WPS_ER_SET_SEL_REG_START: + wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG + "uuid=%s state=START sel_reg=%d dev_passwd_id=%u " + "sel_reg_config_methods=0x%x", + uuid_str, ev->sel_reg, ev->dev_passwd_id, + ev->sel_reg_config_methods); + break; + case WPS_ER_SET_SEL_REG_DONE: + wpa_msg(wpa_s, MSG_DEBUG, WPS_EVENT_ER_SET_SEL_REG + "uuid=%s state=DONE", uuid_str); + break; + case WPS_ER_SET_SEL_REG_FAILED: + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_ER_SET_SEL_REG + "uuid=%s state=FAILED", uuid_str); + break; + } +} + + +static void wpa_supplicant_wps_event(void *ctx, enum wps_event event, + union wps_event_data *data) +{ + struct wpa_supplicant *wpa_s = ctx; + switch (event) { + case WPS_EV_M2D: + wpa_supplicant_wps_event_m2d(wpa_s, &data->m2d); + break; + case WPS_EV_FAIL: + wpa_supplicant_wps_event_fail(wpa_s, &data->fail); + break; + case WPS_EV_SUCCESS: + wpa_supplicant_wps_event_success(wpa_s); + break; + case WPS_EV_PWD_AUTH_FAIL: +#ifdef CONFIG_AP + if (wpa_s->ap_iface && data->pwd_auth_fail.enrollee) + wpa_supplicant_ap_pwd_auth_fail(wpa_s); +#endif /* CONFIG_AP */ + break; + case WPS_EV_PBC_OVERLAP: + break; + case WPS_EV_PBC_TIMEOUT: + break; + case WPS_EV_ER_AP_ADD: + wpa_supplicant_wps_event_er_ap_add(wpa_s, &data->ap); + break; + case WPS_EV_ER_AP_REMOVE: + wpa_supplicant_wps_event_er_ap_remove(wpa_s, &data->ap); + break; + case WPS_EV_ER_ENROLLEE_ADD: + wpa_supplicant_wps_event_er_enrollee_add(wpa_s, + &data->enrollee); + break; + case WPS_EV_ER_ENROLLEE_REMOVE: + wpa_supplicant_wps_event_er_enrollee_remove(wpa_s, + &data->enrollee); + break; + case WPS_EV_ER_AP_SETTINGS: + wpa_supplicant_wps_event_er_ap_settings(wpa_s, + &data->ap_settings); + break; + case WPS_EV_ER_SET_SELECTED_REGISTRAR: + wpa_supplicant_wps_event_er_set_sel_reg(wpa_s, + &data->set_sel_reg); + break; + } +} + + +enum wps_request_type wpas_wps_get_req_type(struct wpa_ssid *ssid) +{ + if (eap_is_wps_pbc_enrollee(&ssid->eap) || + eap_is_wps_pin_enrollee(&ssid->eap)) + return WPS_REQ_ENROLLEE; + else + return WPS_REQ_REGISTRAR; +} + + +static void wpas_clear_wps(struct wpa_supplicant *wpa_s) +{ + int id; + struct wpa_ssid *ssid, *remove_ssid = NULL; + + eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); + + /* Remove any existing WPS network from configuration */ + ssid = wpa_s->conf->ssid; + while (ssid) { + if (ssid->key_mgmt & WPA_KEY_MGMT_WPS) { + if (ssid == wpa_s->current_ssid) { + wpa_s->current_ssid = NULL; + if (ssid != NULL) + wpas_notify_network_changed(wpa_s); + } + id = ssid->id; + remove_ssid = ssid; + } else + id = -1; + ssid = ssid->next; + if (id >= 0) { + wpas_notify_network_removed(wpa_s, remove_ssid); + wpa_config_remove_network(wpa_s->conf, id); + } + } +} + + +static void wpas_wps_timeout(void *eloop_ctx, void *timeout_ctx) +{ + struct wpa_supplicant *wpa_s = eloop_ctx; + wpa_msg(wpa_s, MSG_INFO, WPS_EVENT_TIMEOUT "Requested operation timed " + "out"); + wpas_clear_wps(wpa_s); +} + + +static struct wpa_ssid * wpas_wps_add_network(struct wpa_supplicant *wpa_s, + int registrar, const u8 *bssid) +{ + struct wpa_ssid *ssid; + + ssid = wpa_config_add_network(wpa_s->conf); + if (ssid == NULL) + return NULL; + wpas_notify_network_added(wpa_s, ssid); + wpa_config_set_network_defaults(ssid); + ssid->temporary = 1; + if (wpa_config_set(ssid, "key_mgmt", "WPS", 0) < 0 || + wpa_config_set(ssid, "eap", "WSC", 0) < 0 || + wpa_config_set(ssid, "identity", registrar ? + "\"" WSC_ID_REGISTRAR "\"" : + "\"" WSC_ID_ENROLLEE "\"", 0) < 0) { + wpas_notify_network_removed(wpa_s, ssid); + wpa_config_remove_network(wpa_s->conf, ssid->id); + return NULL; + } + + if (bssid) { +#ifndef CONFIG_P2P + struct wpa_bss *bss; + int count = 0; +#endif /* CONFIG_P2P */ + + os_memcpy(ssid->bssid, bssid, ETH_ALEN); + ssid->bssid_set = 1; + + /* + * Note: With P2P, the SSID may change at the time the WPS + * provisioning is started, so better not filter the AP based + * on the current SSID in the scan results. + */ +#ifndef CONFIG_P2P + dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { + if (os_memcmp(bssid, bss->bssid, ETH_ALEN) != 0) + continue; + + os_free(ssid->ssid); + ssid->ssid = os_malloc(bss->ssid_len); + if (ssid->ssid == NULL) + break; + os_memcpy(ssid->ssid, bss->ssid, bss->ssid_len); + ssid->ssid_len = bss->ssid_len; + wpa_hexdump_ascii(MSG_DEBUG, "WPS: Picked SSID from " + "scan results", + ssid->ssid, ssid->ssid_len); + count++; + } + + if (count > 1) { + wpa_printf(MSG_DEBUG, "WPS: More than one SSID found " + "for the AP; use wildcard"); + os_free(ssid->ssid); + ssid->ssid = NULL; + ssid->ssid_len = 0; + } +#endif /* CONFIG_P2P */ + } + + return ssid; +} + + +static void wpas_wps_reassoc(struct wpa_supplicant *wpa_s, + struct wpa_ssid *selected) +{ + struct wpa_ssid *ssid; + + /* Mark all other networks disabled and trigger reassociation */ + ssid = wpa_s->conf->ssid; + while (ssid) { + int was_disabled = ssid->disabled; + ssid->disabled = ssid != selected; + if (was_disabled != ssid->disabled) + wpas_notify_network_enabled_changed(wpa_s, ssid); + ssid = ssid->next; + } + wpa_s->disconnected = 0; + wpa_s->reassociate = 1; + wpa_s->scan_runs = 0; + wpa_s->wps_success = 0; + wpa_s->blacklist_cleared = 0; + wpa_supplicant_req_scan(wpa_s, 0, 0); +} + + +int wpas_wps_start_pbc(struct wpa_supplicant *wpa_s, const u8 *bssid, + int p2p_group) +{ + struct wpa_ssid *ssid; + wpas_clear_wps(wpa_s); + ssid = wpas_wps_add_network(wpa_s, 0, bssid); + if (ssid == NULL) + return -1; + ssid->temporary = 1; + ssid->p2p_group = p2p_group; +#ifdef CONFIG_P2P + if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { + ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); + if (ssid->ssid) { + ssid->ssid_len = wpa_s->go_params->ssid_len; + os_memcpy(ssid->ssid, wpa_s->go_params->ssid, + ssid->ssid_len); + wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " + "SSID", ssid->ssid, ssid->ssid_len); + } + } +#endif /* CONFIG_P2P */ + wpa_config_set(ssid, "phase1", "\"pbc=1\"", 0); + if (wpa_s->wps_fragment_size) + ssid->eap.fragment_size = wpa_s->wps_fragment_size; + eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, + wpa_s, NULL); + wpas_wps_reassoc(wpa_s, ssid); + return 0; +} + + +int wpas_wps_start_pin(struct wpa_supplicant *wpa_s, const u8 *bssid, + const char *pin, int p2p_group, u16 dev_pw_id) +{ + struct wpa_ssid *ssid; + char val[128]; + unsigned int rpin = 0; + + wpas_clear_wps(wpa_s); + ssid = wpas_wps_add_network(wpa_s, 0, bssid); + if (ssid == NULL) + return -1; + ssid->temporary = 1; + ssid->p2p_group = p2p_group; +#ifdef CONFIG_P2P + if (p2p_group && wpa_s->go_params && wpa_s->go_params->ssid_len) { + ssid->ssid = os_zalloc(wpa_s->go_params->ssid_len + 1); + if (ssid->ssid) { + ssid->ssid_len = wpa_s->go_params->ssid_len; + os_memcpy(ssid->ssid, wpa_s->go_params->ssid, + ssid->ssid_len); + wpa_hexdump_ascii(MSG_DEBUG, "WPS: Use specific AP " + "SSID", ssid->ssid, ssid->ssid_len); + } + } +#endif /* CONFIG_P2P */ + if (pin) + os_snprintf(val, sizeof(val), "\"pin=%s dev_pw_id=%u\"", + pin, dev_pw_id); + else { + rpin = wps_generate_pin(); + os_snprintf(val, sizeof(val), "\"pin=%08d dev_pw_id=%u\"", + rpin, dev_pw_id); + } + wpa_config_set(ssid, "phase1", val, 0); + if (wpa_s->wps_fragment_size) + ssid->eap.fragment_size = wpa_s->wps_fragment_size; + eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, + wpa_s, NULL); + wpas_wps_reassoc(wpa_s, ssid); + return rpin; +} + + +/* Cancel the wps pbc/pin requests */ +int wpas_wps_cancel(struct wpa_supplicant *wpa_s) +{ +#ifdef CONFIG_AP + if (wpa_s->ap_iface) { + wpa_printf(MSG_DEBUG, "WPS: Cancelling in AP mode"); + return wpa_supplicant_ap_wps_cancel(wpa_s); + } +#endif /* CONFIG_AP */ + + if (wpa_s->wpa_state == WPA_SCANNING) { + wpa_printf(MSG_DEBUG, "WPS: Cancel operation - cancel scan"); + wpa_supplicant_cancel_scan(wpa_s); + wpas_clear_wps(wpa_s); + } else if (wpa_s->wpa_state >= WPA_ASSOCIATED) { + wpa_printf(MSG_DEBUG, "WPS: Cancel operation - " + "deauthenticate"); + wpa_supplicant_deauthenticate(wpa_s, + WLAN_REASON_DEAUTH_LEAVING); + wpas_clear_wps(wpa_s); + } + + return 0; +} + + +#ifdef CONFIG_WPS_OOB +int wpas_wps_start_oob(struct wpa_supplicant *wpa_s, char *device_type, + char *path, char *method, char *name) +{ + struct wps_context *wps = wpa_s->wps; + struct oob_device_data *oob_dev; + + oob_dev = wps_get_oob_device(device_type); + if (oob_dev == NULL) + return -1; + oob_dev->device_path = path; + oob_dev->device_name = name; + wps->oob_conf.oob_method = wps_get_oob_method(method); + + if (wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E) { + /* + * Use pre-configured DH keys in order to be able to write the + * key hash into the OOB file. + */ + wpabuf_free(wps->dh_pubkey); + wpabuf_free(wps->dh_privkey); + wps->dh_privkey = NULL; + wps->dh_pubkey = NULL; + dh5_free(wps->dh_ctx); + wps->dh_ctx = dh5_init(&wps->dh_privkey, &wps->dh_pubkey); + wps->dh_pubkey = wpabuf_zeropad(wps->dh_pubkey, 192); + if (wps->dh_ctx == NULL || wps->dh_pubkey == NULL) { + wpa_printf(MSG_ERROR, "WPS: Failed to initialize " + "Diffie-Hellman handshake"); + return -1; + } + } + + if (wps->oob_conf.oob_method == OOB_METHOD_CRED) + wpas_clear_wps(wpa_s); + + if (wps_process_oob(wps, oob_dev, 0) < 0) + return -1; + + if ((wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_E || + wps->oob_conf.oob_method == OOB_METHOD_DEV_PWD_R) && + wpas_wps_start_pin(wpa_s, NULL, + wpabuf_head(wps->oob_conf.dev_password), 0, + DEV_PW_DEFAULT) < 0) + return -1; + + return 0; +} +#endif /* CONFIG_WPS_OOB */ + + +int wpas_wps_start_reg(struct wpa_supplicant *wpa_s, const u8 *bssid, + const char *pin, struct wps_new_ap_settings *settings) +{ + struct wpa_ssid *ssid; + char val[200]; + char *pos, *end; + int res; + + if (!pin) + return -1; + wpas_clear_wps(wpa_s); + ssid = wpas_wps_add_network(wpa_s, 1, bssid); + if (ssid == NULL) + return -1; + ssid->temporary = 1; + pos = val; + end = pos + sizeof(val); + res = os_snprintf(pos, end - pos, "\"pin=%s", pin); + if (res < 0 || res >= end - pos) + return -1; + pos += res; + if (settings) { + res = os_snprintf(pos, end - pos, " new_ssid=%s new_auth=%s " + "new_encr=%s new_key=%s", + settings->ssid_hex, settings->auth, + settings->encr, settings->key_hex); + if (res < 0 || res >= end - pos) + return -1; + pos += res; + } + res = os_snprintf(pos, end - pos, "\""); + if (res < 0 || res >= end - pos) + return -1; + wpa_config_set(ssid, "phase1", val, 0); + if (wpa_s->wps_fragment_size) + ssid->eap.fragment_size = wpa_s->wps_fragment_size; + eloop_register_timeout(WPS_PBC_WALK_TIME, 0, wpas_wps_timeout, + wpa_s, NULL); + wpas_wps_reassoc(wpa_s, ssid); + return 0; +} + + +static int wpas_wps_new_psk_cb(void *ctx, const u8 *mac_addr, const u8 *psk, + size_t psk_len) +{ + wpa_printf(MSG_DEBUG, "WPS: Received new WPA/WPA2-PSK from WPS for " + "STA " MACSTR, MAC2STR(mac_addr)); + wpa_hexdump_key(MSG_DEBUG, "Per-device PSK", psk, psk_len); + + /* TODO */ + + return 0; +} + + +static void wpas_wps_pin_needed_cb(void *ctx, const u8 *uuid_e, + const struct wps_device_data *dev) +{ + char uuid[40], txt[400]; + int len; + char devtype[WPS_DEV_TYPE_BUFSIZE]; + if (uuid_bin2str(uuid_e, uuid, sizeof(uuid))) + return; + wpa_printf(MSG_DEBUG, "WPS: PIN needed for UUID-E %s", uuid); + len = os_snprintf(txt, sizeof(txt), "WPS-EVENT-PIN-NEEDED %s " MACSTR + " [%s|%s|%s|%s|%s|%s]", + uuid, MAC2STR(dev->mac_addr), dev->device_name, + dev->manufacturer, dev->model_name, + dev->model_number, dev->serial_number, + wps_dev_type_bin2str(dev->pri_dev_type, devtype, + sizeof(devtype))); + if (len > 0 && len < (int) sizeof(txt)) + wpa_printf(MSG_INFO, "%s", txt); +} + + +static void wpas_wps_set_sel_reg_cb(void *ctx, int sel_reg, u16 dev_passwd_id, + u16 sel_reg_config_methods) +{ +#ifdef CONFIG_WPS_ER + struct wpa_supplicant *wpa_s = ctx; + + if (wpa_s->wps_er == NULL) + return; + wpa_printf(MSG_DEBUG, "WPS ER: SetSelectedRegistrar - sel_reg=%d " + "dev_password_id=%u sel_reg_config_methods=0x%x", + sel_reg, dev_passwd_id, sel_reg_config_methods); + wps_er_set_sel_reg(wpa_s->wps_er, sel_reg, dev_passwd_id, + sel_reg_config_methods); +#endif /* CONFIG_WPS_ER */ +} + + +static u16 wps_fix_config_methods(u16 config_methods) +{ +#ifdef CONFIG_WPS2 + if ((config_methods & + (WPS_CONFIG_DISPLAY | WPS_CONFIG_VIRT_DISPLAY | + WPS_CONFIG_PHY_DISPLAY)) == WPS_CONFIG_DISPLAY) { + wpa_printf(MSG_INFO, "WPS: Converting display to " + "virtual_display for WPS 2.0 compliance"); + config_methods |= WPS_CONFIG_VIRT_DISPLAY; + } + if ((config_methods & + (WPS_CONFIG_PUSHBUTTON | WPS_CONFIG_VIRT_PUSHBUTTON | + WPS_CONFIG_PHY_PUSHBUTTON)) == WPS_CONFIG_PUSHBUTTON) { + wpa_printf(MSG_INFO, "WPS: Converting push_button to " + "virtual_push_button for WPS 2.0 compliance"); + config_methods |= WPS_CONFIG_VIRT_PUSHBUTTON; + } +#endif /* CONFIG_WPS2 */ + + return config_methods; +} + + +static void wpas_wps_set_uuid(struct wpa_supplicant *wpa_s, + struct wps_context *wps) +{ + wpa_printf(MSG_DEBUG, "WPS: Set UUID for interface %s", wpa_s->ifname); + if (is_nil_uuid(wpa_s->conf->uuid)) { + struct wpa_supplicant *first; + first = wpa_s->global->ifaces; + while (first && first->next) + first = first->next; + if (first && first != wpa_s) { + os_memcpy(wps->uuid, wpa_s->global->ifaces->wps->uuid, + WPS_UUID_LEN); + wpa_hexdump(MSG_DEBUG, "WPS: UUID from the first " + "interface", wps->uuid, WPS_UUID_LEN); + } else { + uuid_gen_mac_addr(wpa_s->own_addr, wps->uuid); + wpa_hexdump(MSG_DEBUG, "WPS: UUID based on MAC " + "address", wps->uuid, WPS_UUID_LEN); + } + } else { + os_memcpy(wps->uuid, wpa_s->conf->uuid, WPS_UUID_LEN); + wpa_hexdump(MSG_DEBUG, "WPS: UUID based on configuration", + wps->uuid, WPS_UUID_LEN); + } +} + + +int wpas_wps_init(struct wpa_supplicant *wpa_s) +{ + struct wps_context *wps; + struct wps_registrar_config rcfg; + + wps = os_zalloc(sizeof(*wps)); + if (wps == NULL) + return -1; + + wps->cred_cb = wpa_supplicant_wps_cred; + wps->event_cb = wpa_supplicant_wps_event; + wps->cb_ctx = wpa_s; + + wps->dev.device_name = wpa_s->conf->device_name; + wps->dev.manufacturer = wpa_s->conf->manufacturer; + wps->dev.model_name = wpa_s->conf->model_name; + wps->dev.model_number = wpa_s->conf->model_number; + wps->dev.serial_number = wpa_s->conf->serial_number; + wps->config_methods = + wps_config_methods_str2bin(wpa_s->conf->config_methods); + if ((wps->config_methods & (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == + (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { + wpa_printf(MSG_ERROR, "WPS: Both Label and Display config " + "methods are not allowed at the same time"); + os_free(wps); + return -1; + } + wps->config_methods = wps_fix_config_methods(wps->config_methods); + os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, + WPS_DEV_TYPE_LEN); + + wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; + os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, + WPS_DEV_TYPE_LEN * wps->dev.num_sec_dev_types); + + wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); + wps->dev.rf_bands = WPS_RF_24GHZ | WPS_RF_50GHZ; /* TODO: config */ + os_memcpy(wps->dev.mac_addr, wpa_s->own_addr, ETH_ALEN); + wpas_wps_set_uuid(wpa_s, wps); + + wps->auth_types = WPS_AUTH_WPA2PSK | WPS_AUTH_WPAPSK; + wps->encr_types = WPS_ENCR_AES | WPS_ENCR_TKIP; + + os_memset(&rcfg, 0, sizeof(rcfg)); + rcfg.new_psk_cb = wpas_wps_new_psk_cb; + rcfg.pin_needed_cb = wpas_wps_pin_needed_cb; + rcfg.set_sel_reg_cb = wpas_wps_set_sel_reg_cb; + rcfg.cb_ctx = wpa_s; + + wps->registrar = wps_registrar_init(wps, &rcfg); + if (wps->registrar == NULL) { + wpa_printf(MSG_DEBUG, "Failed to initialize WPS Registrar"); + os_free(wps); + return -1; + } + + wpa_s->wps = wps; + + return 0; +} + + +void wpas_wps_deinit(struct wpa_supplicant *wpa_s) +{ + eloop_cancel_timeout(wpas_wps_timeout, wpa_s, NULL); + + if (wpa_s->wps == NULL) + return; + +#ifdef CONFIG_WPS_ER + wps_er_deinit(wpa_s->wps_er, NULL, NULL); + wpa_s->wps_er = NULL; +#endif /* CONFIG_WPS_ER */ + + wps_registrar_deinit(wpa_s->wps->registrar); + wpabuf_free(wpa_s->wps->dh_pubkey); + wpabuf_free(wpa_s->wps->dh_privkey); + wpabuf_free(wpa_s->wps->oob_conf.pubkey_hash); + wpabuf_free(wpa_s->wps->oob_conf.dev_password); + os_free(wpa_s->wps->network_key); + os_free(wpa_s->wps); + wpa_s->wps = NULL; +} + + +int wpas_wps_ssid_bss_match(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid, struct wpa_scan_res *bss) +{ + struct wpabuf *wps_ie; + + if (!(ssid->key_mgmt & WPA_KEY_MGMT_WPS)) + return -1; + + wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (eap_is_wps_pbc_enrollee(&ssid->eap)) { + if (!wps_ie) { + wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); + return 0; + } + + if (!wps_is_selected_pbc_registrar(wps_ie)) { + wpa_printf(MSG_DEBUG, " skip - WPS AP " + "without active PBC Registrar"); + wpabuf_free(wps_ie); + return 0; + } + + /* TODO: overlap detection */ + wpa_printf(MSG_DEBUG, " selected based on WPS IE " + "(Active PBC)"); + wpabuf_free(wps_ie); + return 1; + } + + if (eap_is_wps_pin_enrollee(&ssid->eap)) { + if (!wps_ie) { + wpa_printf(MSG_DEBUG, " skip - non-WPS AP"); + return 0; + } + + /* + * Start with WPS APs that advertise our address as an + * authorized MAC (v2.0) or active PIN Registrar (v1.0) and + * allow any WPS AP after couple of scans since some APs do not + * set Selected Registrar attribute properly when using + * external Registrar. + */ + if (!wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1)) { + if (wpa_s->scan_runs < WPS_PIN_SCAN_IGNORE_SEL_REG) { + wpa_printf(MSG_DEBUG, " skip - WPS AP " + "without active PIN Registrar"); + wpabuf_free(wps_ie); + return 0; + } + wpa_printf(MSG_DEBUG, " selected based on WPS IE"); + } else { + wpa_printf(MSG_DEBUG, " selected based on WPS IE " + "(Authorized MAC or Active PIN)"); + } + wpabuf_free(wps_ie); + return 1; + } + + if (wps_ie) { + wpa_printf(MSG_DEBUG, " selected based on WPS IE"); + wpabuf_free(wps_ie); + return 1; + } + + return -1; +} + + +int wpas_wps_ssid_wildcard_ok(struct wpa_supplicant *wpa_s, + struct wpa_ssid *ssid, + struct wpa_scan_res *bss) +{ + struct wpabuf *wps_ie = NULL; + int ret = 0; + + if (eap_is_wps_pbc_enrollee(&ssid->eap)) { + wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (wps_ie && wps_is_selected_pbc_registrar(wps_ie)) { + /* allow wildcard SSID for WPS PBC */ + ret = 1; + } + } else if (eap_is_wps_pin_enrollee(&ssid->eap)) { + wps_ie = wpa_scan_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (wps_ie && + (wps_is_addr_authorized(wps_ie, wpa_s->own_addr, 1) || + wpa_s->scan_runs >= WPS_PIN_SCAN_IGNORE_SEL_REG)) { + /* allow wildcard SSID for WPS PIN */ + ret = 1; + } + } + + if (!ret && ssid->bssid_set && + os_memcmp(ssid->bssid, bss->bssid, ETH_ALEN) == 0) { + /* allow wildcard SSID due to hardcoded BSSID match */ + ret = 1; + } + +#ifdef CONFIG_WPS_STRICT + if (wps_ie) { + if (wps_validate_beacon_probe_resp(wps_ie, bss->beacon_ie_len > + 0, bss->bssid) < 0) + ret = 0; + if (bss->beacon_ie_len) { + struct wpabuf *bcn_wps; + bcn_wps = wpa_scan_get_vendor_ie_multi_beacon( + bss, WPS_IE_VENDOR_TYPE); + if (bcn_wps == NULL) { + wpa_printf(MSG_DEBUG, "WPS: Mandatory WPS IE " + "missing from AP Beacon"); + ret = 0; + } else { + if (wps_validate_beacon(wps_ie) < 0) + ret = 0; + wpabuf_free(bcn_wps); + } + } + } +#endif /* CONFIG_WPS_STRICT */ + + wpabuf_free(wps_ie); + + return ret; +} + + +int wpas_wps_scan_pbc_overlap(struct wpa_supplicant *wpa_s, + struct wpa_bss *selected, struct wpa_ssid *ssid) +{ + const u8 *sel_uuid, *uuid; + struct wpabuf *wps_ie; + int ret = 0; + struct wpa_bss *bss; + + if (!eap_is_wps_pbc_enrollee(&ssid->eap)) + return 0; + + wpa_printf(MSG_DEBUG, "WPS: Check whether PBC session overlap is " + "present in scan results; selected BSSID " MACSTR, + MAC2STR(selected->bssid)); + + /* Make sure that only one AP is in active PBC mode */ + wps_ie = wpa_bss_get_vendor_ie_multi(selected, WPS_IE_VENDOR_TYPE); + if (wps_ie) { + sel_uuid = wps_get_uuid_e(wps_ie); + wpa_hexdump(MSG_DEBUG, "WPS: UUID of the selected BSS", + sel_uuid, UUID_LEN); + } else { + wpa_printf(MSG_DEBUG, "WPS: Selected BSS does not include " + "WPS IE?!"); + sel_uuid = NULL; + } + + dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { + struct wpabuf *ie; + if (bss == selected) + continue; + ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (!ie) + continue; + if (!wps_is_selected_pbc_registrar(ie)) { + wpabuf_free(ie); + continue; + } + wpa_printf(MSG_DEBUG, "WPS: Another BSS in active PBC mode: " + MACSTR, MAC2STR(bss->bssid)); + uuid = wps_get_uuid_e(ie); + wpa_hexdump(MSG_DEBUG, "WPS: UUID of the other BSS", + uuid, UUID_LEN); + if (sel_uuid == NULL || uuid == NULL || + os_memcmp(sel_uuid, uuid, UUID_LEN) != 0) { + ret = 1; /* PBC overlap */ + wpa_msg(wpa_s, MSG_INFO, "WPS: PBC overlap detected: " + MACSTR " and " MACSTR, + MAC2STR(selected->bssid), + MAC2STR(bss->bssid)); + wpabuf_free(ie); + break; + } + + /* TODO: verify that this is reasonable dual-band situation */ + + wpabuf_free(ie); + } + + wpabuf_free(wps_ie); + + return ret; +} + + +void wpas_wps_notify_scan_results(struct wpa_supplicant *wpa_s) +{ + struct wpa_bss *bss; + unsigned int pbc = 0, auth = 0, pin = 0, wps = 0; + + if (wpa_s->disconnected || wpa_s->wpa_state >= WPA_ASSOCIATED) + return; + + dl_list_for_each(bss, &wpa_s->bss, struct wpa_bss, list) { + struct wpabuf *ie; + ie = wpa_bss_get_vendor_ie_multi(bss, WPS_IE_VENDOR_TYPE); + if (!ie) + continue; + if (wps_is_selected_pbc_registrar(ie)) + pbc++; + else if (wps_is_addr_authorized(ie, wpa_s->own_addr, 0)) + auth++; + else if (wps_is_selected_pin_registrar(ie)) + pin++; + else + wps++; + wpabuf_free(ie); + } + + if (pbc) + wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PBC); + else if (auth) + wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_AUTH); + else if (pin) + wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE_PIN); + else if (wps) + wpa_msg_ctrl(wpa_s, MSG_INFO, WPS_EVENT_AP_AVAILABLE); +} + + +int wpas_wps_searching(struct wpa_supplicant *wpa_s) +{ + struct wpa_ssid *ssid; + + for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { + if ((ssid->key_mgmt & WPA_KEY_MGMT_WPS) && !ssid->disabled) + return 1; + } + + return 0; +} + + +int wpas_wps_scan_result_text(const u8 *ies, size_t ies_len, char *buf, + char *end) +{ + struct wpabuf *wps_ie; + int ret; + + wps_ie = ieee802_11_vendor_ie_concat(ies, ies_len, WPS_DEV_OUI_WFA); + if (wps_ie == NULL) + return 0; + + ret = wps_attr_text(wps_ie, buf, end); + wpabuf_free(wps_ie); + return ret; +} + + +int wpas_wps_er_start(struct wpa_supplicant *wpa_s, const char *filter) +{ +#ifdef CONFIG_WPS_ER + if (wpa_s->wps_er) { + wps_er_refresh(wpa_s->wps_er); + return 0; + } + wpa_s->wps_er = wps_er_init(wpa_s->wps, wpa_s->ifname, filter); + if (wpa_s->wps_er == NULL) + return -1; + return 0; +#else /* CONFIG_WPS_ER */ + return 0; +#endif /* CONFIG_WPS_ER */ +} + + +int wpas_wps_er_stop(struct wpa_supplicant *wpa_s) +{ +#ifdef CONFIG_WPS_ER + wps_er_deinit(wpa_s->wps_er, NULL, NULL); + wpa_s->wps_er = NULL; +#endif /* CONFIG_WPS_ER */ + return 0; +} + + +#ifdef CONFIG_WPS_ER +int wpas_wps_er_add_pin(struct wpa_supplicant *wpa_s, const u8 *addr, + const char *uuid, const char *pin) +{ + u8 u[UUID_LEN]; + int any = 0; + + if (os_strcmp(uuid, "any") == 0) + any = 1; + else if (uuid_str2bin(uuid, u)) + return -1; + return wps_registrar_add_pin(wpa_s->wps->registrar, addr, + any ? NULL : u, + (const u8 *) pin, os_strlen(pin), 300); +} + + +int wpas_wps_er_pbc(struct wpa_supplicant *wpa_s, const char *uuid) +{ + u8 u[UUID_LEN]; + + if (uuid_str2bin(uuid, u)) + return -1; + return wps_er_pbc(wpa_s->wps_er, u); +} + + +int wpas_wps_er_learn(struct wpa_supplicant *wpa_s, const char *uuid, + const char *pin) +{ + u8 u[UUID_LEN]; + + if (uuid_str2bin(uuid, u)) + return -1; + return wps_er_learn(wpa_s->wps_er, u, (const u8 *) pin, + os_strlen(pin)); +} + + +int wpas_wps_er_set_config(struct wpa_supplicant *wpa_s, const char *uuid, + int id) +{ + u8 u[UUID_LEN]; + struct wpa_ssid *ssid; + struct wps_credential cred; + + if (uuid_str2bin(uuid, u)) + return -1; + ssid = wpa_config_get_network(wpa_s->conf, id); + if (ssid == NULL || ssid->ssid == NULL) + return -1; + + os_memset(&cred, 0, sizeof(cred)); + if (ssid->ssid_len > 32) + return -1; + os_memcpy(cred.ssid, ssid->ssid, ssid->ssid_len); + cred.ssid_len = ssid->ssid_len; + if (ssid->key_mgmt & WPA_KEY_MGMT_PSK) { + cred.auth_type = (ssid->proto & WPA_PROTO_RSN) ? + WPS_AUTH_WPA2PSK : WPS_AUTH_WPAPSK; + if (ssid->pairwise_cipher & WPA_CIPHER_CCMP) + cred.encr_type = WPS_ENCR_AES; + else + cred.encr_type = WPS_ENCR_TKIP; + if (ssid->passphrase) { + cred.key_len = os_strlen(ssid->passphrase); + if (cred.key_len >= 64) + return -1; + os_memcpy(cred.key, ssid->passphrase, cred.key_len); + } else if (ssid->psk_set) { + cred.key_len = 32; + os_memcpy(cred.key, ssid->psk, 32); + } else + return -1; + } else { + cred.auth_type = WPS_AUTH_OPEN; + cred.encr_type = WPS_ENCR_NONE; + } + return wps_er_set_config(wpa_s->wps_er, u, &cred); +} + + +int wpas_wps_er_config(struct wpa_supplicant *wpa_s, const char *uuid, + const char *pin, struct wps_new_ap_settings *settings) +{ + u8 u[UUID_LEN]; + struct wps_credential cred; + size_t len; + + if (uuid_str2bin(uuid, u)) + return -1; + if (settings->ssid_hex == NULL || settings->auth == NULL || + settings->encr == NULL || settings->key_hex == NULL) + return -1; + + os_memset(&cred, 0, sizeof(cred)); + len = os_strlen(settings->ssid_hex); + if ((len & 1) || len > 2 * sizeof(cred.ssid) || + hexstr2bin(settings->ssid_hex, cred.ssid, len / 2)) + return -1; + cred.ssid_len = len / 2; + + len = os_strlen(settings->key_hex); + if ((len & 1) || len > 2 * sizeof(cred.key) || + hexstr2bin(settings->key_hex, cred.key, len / 2)) + return -1; + cred.key_len = len / 2; + + if (os_strcmp(settings->auth, "OPEN") == 0) + cred.auth_type = WPS_AUTH_OPEN; + else if (os_strcmp(settings->auth, "WPAPSK") == 0) + cred.auth_type = WPS_AUTH_WPAPSK; + else if (os_strcmp(settings->auth, "WPA2PSK") == 0) + cred.auth_type = WPS_AUTH_WPA2PSK; + else + return -1; + + if (os_strcmp(settings->encr, "NONE") == 0) + cred.encr_type = WPS_ENCR_NONE; + else if (os_strcmp(settings->encr, "WEP") == 0) + cred.encr_type = WPS_ENCR_WEP; + else if (os_strcmp(settings->encr, "TKIP") == 0) + cred.encr_type = WPS_ENCR_TKIP; + else if (os_strcmp(settings->encr, "CCMP") == 0) + cred.encr_type = WPS_ENCR_AES; + else + return -1; + + return wps_er_config(wpa_s->wps_er, u, (const u8 *) pin, + os_strlen(pin), &cred); +} + + +static int callbacks_pending = 0; + +static void wpas_wps_terminate_cb(void *ctx) +{ + wpa_printf(MSG_DEBUG, "WPS ER: Terminated"); + if (--callbacks_pending <= 0) + eloop_terminate(); +} +#endif /* CONFIG_WPS_ER */ + + +int wpas_wps_terminate_pending(struct wpa_supplicant *wpa_s) +{ +#ifdef CONFIG_WPS_ER + if (wpa_s->wps_er) { + callbacks_pending++; + wps_er_deinit(wpa_s->wps_er, wpas_wps_terminate_cb, wpa_s); + wpa_s->wps_er = NULL; + return 1; + } +#endif /* CONFIG_WPS_ER */ + return 0; +} + + +int wpas_wps_in_progress(struct wpa_supplicant *wpa_s) +{ + struct wpa_ssid *ssid; + + for (ssid = wpa_s->conf->ssid; ssid; ssid = ssid->next) { + if (!ssid->disabled && ssid->key_mgmt == WPA_KEY_MGMT_WPS) + return 1; + } + + return 0; +} + + +void wpas_wps_update_config(struct wpa_supplicant *wpa_s) +{ + struct wps_context *wps = wpa_s->wps; + + if (wps == NULL) + return; + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_CONFIG_METHODS) { + wps->config_methods = wps_config_methods_str2bin( + wpa_s->conf->config_methods); + if ((wps->config_methods & + (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) == + (WPS_CONFIG_DISPLAY | WPS_CONFIG_LABEL)) { + wpa_printf(MSG_ERROR, "WPS: Both Label and Display " + "config methods are not allowed at the " + "same time"); + wps->config_methods &= ~WPS_CONFIG_LABEL; + } + } + wps->config_methods = wps_fix_config_methods(wps->config_methods); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_DEVICE_TYPE) + os_memcpy(wps->dev.pri_dev_type, wpa_s->conf->device_type, + WPS_DEV_TYPE_LEN); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_SEC_DEVICE_TYPE) { + wps->dev.num_sec_dev_types = wpa_s->conf->num_sec_device_types; + os_memcpy(wps->dev.sec_dev_type, wpa_s->conf->sec_device_type, + wps->dev.num_sec_dev_types * WPS_DEV_TYPE_LEN); + } + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_OS_VERSION) + wps->dev.os_version = WPA_GET_BE32(wpa_s->conf->os_version); + + if (wpa_s->conf->changed_parameters & CFG_CHANGED_UUID) + wpas_wps_set_uuid(wpa_s, wps); + + if (wpa_s->conf->changed_parameters & + (CFG_CHANGED_DEVICE_NAME | CFG_CHANGED_WPS_STRING)) { + /* Update pointers to make sure they refer current values */ + wps->dev.device_name = wpa_s->conf->device_name; + wps->dev.manufacturer = wpa_s->conf->manufacturer; + wps->dev.model_name = wpa_s->conf->model_name; + wps->dev.model_number = wpa_s->conf->model_number; + wps->dev.serial_number = wpa_s->conf->serial_number; + } +} -- cgit v1.1