+++ /dev/null
-/*
- * Wi-Fi Protected Setup - Enrollee
- * Copyright (c) 2008, Jouni Malinen <j@w1.fi>
- *
- * 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 "crypto/crypto.h"
-#include "crypto/sha256.h"
-#include "wps_i.h"
-#include "wps_dev_attr.h"
-
-
-static int wps_build_mac_addr(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * MAC Address");
- wpabuf_put_be16(msg, ATTR_MAC_ADDR);
- wpabuf_put_be16(msg, ETH_ALEN);
- wpabuf_put_data(msg, wps->mac_addr_e, ETH_ALEN);
- return 0;
-}
-
-
-static int wps_build_wps_state(struct wps_data *wps, struct wpabuf *msg)
-{
- u8 state;
- if (wps->wps->ap)
- state = wps->wps->wps_state;
- else
- state = WPS_STATE_NOT_CONFIGURED;
- wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State (%d)",
- state);
- wpabuf_put_be16(msg, ATTR_WPS_STATE);
- wpabuf_put_be16(msg, 1);
- wpabuf_put_u8(msg, state);
- return 0;
-}
-
-
-static int wps_build_e_hash(struct wps_data *wps, struct wpabuf *msg)
-{
- u8 *hash;
- const u8 *addr[4];
- size_t len[4];
-
- if (os_get_random(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
- return -1;
- wpa_hexdump(MSG_DEBUG, "WPS: E-S1", wps->snonce, WPS_SECRET_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: E-S2",
- wps->snonce + WPS_SECRET_NONCE_LEN, WPS_SECRET_NONCE_LEN);
-
- if (wps->dh_pubkey_e == NULL || wps->dh_pubkey_r == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: DH public keys not available for "
- "E-Hash derivation");
- return -1;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: * E-Hash1");
- wpabuf_put_be16(msg, ATTR_E_HASH1);
- wpabuf_put_be16(msg, SHA256_MAC_LEN);
- hash = wpabuf_put(msg, SHA256_MAC_LEN);
- /* E-Hash1 = HMAC_AuthKey(E-S1 || PSK1 || PK_E || PK_R) */
- addr[0] = wps->snonce;
- len[0] = WPS_SECRET_NONCE_LEN;
- addr[1] = wps->psk1;
- len[1] = WPS_PSK_LEN;
- addr[2] = wpabuf_head(wps->dh_pubkey_e);
- len[2] = wpabuf_len(wps->dh_pubkey_e);
- addr[3] = wpabuf_head(wps->dh_pubkey_r);
- len[3] = wpabuf_len(wps->dh_pubkey_r);
- hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
- wpa_hexdump(MSG_DEBUG, "WPS: E-Hash1", hash, SHA256_MAC_LEN);
-
- wpa_printf(MSG_DEBUG, "WPS: * E-Hash2");
- wpabuf_put_be16(msg, ATTR_E_HASH2);
- wpabuf_put_be16(msg, SHA256_MAC_LEN);
- hash = wpabuf_put(msg, SHA256_MAC_LEN);
- /* E-Hash2 = HMAC_AuthKey(E-S2 || PSK2 || PK_E || PK_R) */
- addr[0] = wps->snonce + WPS_SECRET_NONCE_LEN;
- addr[1] = wps->psk2;
- hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
- wpa_hexdump(MSG_DEBUG, "WPS: E-Hash2", hash, SHA256_MAC_LEN);
-
- return 0;
-}
-
-
-static int wps_build_e_snonce1(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * E-SNonce1");
- wpabuf_put_be16(msg, ATTR_E_SNONCE1);
- wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
- wpabuf_put_data(msg, wps->snonce, WPS_SECRET_NONCE_LEN);
- return 0;
-}
-
-
-static int wps_build_e_snonce2(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * E-SNonce2");
- wpabuf_put_be16(msg, ATTR_E_SNONCE2);
- wpabuf_put_be16(msg, WPS_SECRET_NONCE_LEN);
- wpabuf_put_data(msg, wps->snonce + WPS_SECRET_NONCE_LEN,
- WPS_SECRET_NONCE_LEN);
- return 0;
-}
-
-
-static struct wpabuf * wps_build_m1(struct wps_data *wps)
-{
- struct wpabuf *msg;
-
- if (os_get_random(wps->nonce_e, WPS_NONCE_LEN) < 0)
- return NULL;
- wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
- wps->nonce_e, WPS_NONCE_LEN);
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message M1");
- msg = wpabuf_alloc(1000);
- if (msg == NULL)
- return NULL;
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_M1) ||
- wps_build_uuid_e(msg, wps->uuid_e) ||
- wps_build_mac_addr(wps, msg) ||
- wps_build_enrollee_nonce(wps, msg) ||
- wps_build_public_key(wps, msg) ||
- wps_build_auth_type_flags(wps, msg) ||
- wps_build_encr_type_flags(wps, msg) ||
- wps_build_conn_type_flags(wps, msg) ||
- wps_build_config_methods(msg, wps->wps->config_methods) ||
- wps_build_wps_state(wps, msg) ||
- wps_build_device_attrs(&wps->wps->dev, msg) ||
- wps_build_rf_bands(&wps->wps->dev, msg) ||
- wps_build_assoc_state(wps, msg) ||
- wps_build_dev_password_id(msg, wps->dev_pw_id) ||
- wps_build_config_error(msg, WPS_CFG_NO_ERROR) ||
- wps_build_os_version(&wps->wps->dev, msg) ||
- wps_build_wfa_ext(msg, 0, NULL, 0)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- wps->state = RECV_M2;
- return msg;
-}
-
-
-static struct wpabuf * wps_build_m3(struct wps_data *wps)
-{
- struct wpabuf *msg;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message M3");
-
- if (wps->dev_password == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Device Password available");
- return NULL;
- }
- wps_derive_psk(wps, wps->dev_password, wps->dev_password_len);
-
- msg = wpabuf_alloc(1000);
- if (msg == NULL)
- return NULL;
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_M3) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_e_hash(wps, msg) ||
- wps_build_wfa_ext(msg, 0, NULL, 0) ||
- wps_build_authenticator(wps, msg)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- wps->state = RECV_M4;
- return msg;
-}
-
-
-static struct wpabuf * wps_build_m5(struct wps_data *wps)
-{
- struct wpabuf *msg, *plain;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message M5");
-
- plain = wpabuf_alloc(200);
- if (plain == NULL)
- return NULL;
-
- msg = wpabuf_alloc(1000);
- if (msg == NULL) {
- wpabuf_free(plain);
- return NULL;
- }
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_M5) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_e_snonce1(wps, plain) ||
- wps_build_key_wrap_auth(wps, plain) ||
- wps_build_encr_settings(wps, msg, plain) ||
- wps_build_wfa_ext(msg, 0, NULL, 0) ||
- wps_build_authenticator(wps, msg)) {
- wpabuf_free(plain);
- wpabuf_free(msg);
- return NULL;
- }
- wpabuf_free(plain);
-
- wps->state = RECV_M6;
- return msg;
-}
-
-
-static int wps_build_cred_ssid(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * SSID");
- wpabuf_put_be16(msg, ATTR_SSID);
- wpabuf_put_be16(msg, wps->wps->ssid_len);
- wpabuf_put_data(msg, wps->wps->ssid, wps->wps->ssid_len);
- return 0;
-}
-
-
-static int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * Authentication Type");
- wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
- wpabuf_put_be16(msg, 2);
- wpabuf_put_be16(msg, wps->wps->auth_types);
- return 0;
-}
-
-
-static int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * Encryption Type");
- wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
- wpabuf_put_be16(msg, 2);
- wpabuf_put_be16(msg, wps->wps->encr_types);
- return 0;
-}
-
-
-static int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * Network Key");
- wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
- wpabuf_put_be16(msg, wps->wps->network_key_len);
- wpabuf_put_data(msg, wps->wps->network_key, wps->wps->network_key_len);
- return 0;
-}
-
-
-static int wps_build_cred_mac_addr(struct wps_data *wps, struct wpabuf *msg)
-{
- wpa_printf(MSG_DEBUG, "WPS: * MAC Address (AP BSSID)");
- wpabuf_put_be16(msg, ATTR_MAC_ADDR);
- wpabuf_put_be16(msg, ETH_ALEN);
- wpabuf_put_data(msg, wps->wps->dev.mac_addr, ETH_ALEN);
- return 0;
-}
-
-
-static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain)
-{
- if (wps->wps->ap_settings) {
- wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)");
- wpabuf_put_data(plain, wps->wps->ap_settings,
- wps->wps->ap_settings_len);
- return 0;
- }
-
- return wps_build_cred_ssid(wps, plain) ||
- wps_build_cred_mac_addr(wps, plain) ||
- wps_build_cred_auth_type(wps, plain) ||
- wps_build_cred_encr_type(wps, plain) ||
- wps_build_cred_network_key(wps, plain);
-}
-
-
-static struct wpabuf * wps_build_m7(struct wps_data *wps)
-{
- struct wpabuf *msg, *plain;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message M7");
-
- plain = wpabuf_alloc(500 + wps->wps->ap_settings_len);
- if (plain == NULL)
- return NULL;
-
- msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len);
- if (msg == NULL) {
- wpabuf_free(plain);
- return NULL;
- }
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_M7) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_e_snonce2(wps, plain) ||
- (wps->wps->ap && wps_build_ap_settings(wps, plain)) ||
- wps_build_key_wrap_auth(wps, plain) ||
- wps_build_encr_settings(wps, msg, plain) ||
- wps_build_wfa_ext(msg, 0, NULL, 0) ||
- wps_build_authenticator(wps, msg)) {
- wpabuf_free(plain);
- wpabuf_free(msg);
- return NULL;
- }
- wpabuf_free(plain);
-
- if (wps->wps->ap && wps->wps->registrar) {
- /*
- * If the Registrar is only learning our current configuration,
- * it may not continue protocol run to successful completion.
- * Store information here to make sure it remains available.
- */
- wps_device_store(wps->wps->registrar, &wps->peer_dev,
- wps->uuid_r);
- }
-
- wps->state = RECV_M8;
- return msg;
-}
-
-
-static struct wpabuf * wps_build_wsc_done(struct wps_data *wps)
-{
- struct wpabuf *msg;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_Done");
-
- msg = wpabuf_alloc(1000);
- if (msg == NULL)
- return NULL;
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_WSC_DONE) ||
- wps_build_enrollee_nonce(wps, msg) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_wfa_ext(msg, 0, NULL, 0)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- if (wps->wps->ap)
- wps->state = RECV_ACK;
- else {
- wps_success_event(wps->wps);
- wps->state = WPS_FINISHED;
- }
- return msg;
-}
-
-
-static struct wpabuf * wps_build_wsc_ack(struct wps_data *wps)
-{
- struct wpabuf *msg;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_ACK");
-
- msg = wpabuf_alloc(1000);
- if (msg == NULL)
- return NULL;
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_WSC_ACK) ||
- wps_build_enrollee_nonce(wps, msg) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_wfa_ext(msg, 0, NULL, 0)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- return msg;
-}
-
-
-static struct wpabuf * wps_build_wsc_nack(struct wps_data *wps)
-{
- struct wpabuf *msg;
-
- wpa_printf(MSG_DEBUG, "WPS: Building Message WSC_NACK");
-
- msg = wpabuf_alloc(1000);
- if (msg == NULL)
- return NULL;
-
- if (wps_build_version(msg) ||
- wps_build_msg_type(msg, WPS_WSC_NACK) ||
- wps_build_enrollee_nonce(wps, msg) ||
- wps_build_registrar_nonce(wps, msg) ||
- wps_build_config_error(msg, wps->config_error) ||
- wps_build_wfa_ext(msg, 0, NULL, 0)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- return msg;
-}
-
-
-struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps,
- enum wsc_op_code *op_code)
-{
- struct wpabuf *msg;
-
- switch (wps->state) {
- case SEND_M1:
- msg = wps_build_m1(wps);
- *op_code = WSC_MSG;
- break;
- case SEND_M3:
- msg = wps_build_m3(wps);
- *op_code = WSC_MSG;
- break;
- case SEND_M5:
- msg = wps_build_m5(wps);
- *op_code = WSC_MSG;
- break;
- case SEND_M7:
- msg = wps_build_m7(wps);
- *op_code = WSC_MSG;
- break;
- case RECEIVED_M2D:
- if (wps->wps->ap) {
- msg = wps_build_wsc_nack(wps);
- *op_code = WSC_NACK;
- break;
- }
- msg = wps_build_wsc_ack(wps);
- *op_code = WSC_ACK;
- if (msg) {
- /* Another M2/M2D may be received */
- wps->state = RECV_M2;
- }
- break;
- case SEND_WSC_NACK:
- msg = wps_build_wsc_nack(wps);
- *op_code = WSC_NACK;
- break;
- case WPS_MSG_DONE:
- msg = wps_build_wsc_done(wps);
- *op_code = WSC_Done;
- break;
- default:
- wpa_printf(MSG_DEBUG, "WPS: Unsupported state %d for building "
- "a message", wps->state);
- msg = NULL;
- break;
- }
-
- if (*op_code == WSC_MSG && msg) {
- /* Save a copy of the last message for Authenticator derivation
- */
- wpabuf_free(wps->last_msg);
- wps->last_msg = wpabuf_dup(msg);
- }
-
- return msg;
-}
-
-
-static int wps_process_registrar_nonce(struct wps_data *wps, const u8 *r_nonce)
-{
- if (r_nonce == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Registrar Nonce received");
- return -1;
- }
-
- os_memcpy(wps->nonce_r, r_nonce, WPS_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: Registrar Nonce",
- wps->nonce_r, WPS_NONCE_LEN);
-
- return 0;
-}
-
-
-static int wps_process_enrollee_nonce(struct wps_data *wps, const u8 *e_nonce)
-{
- if (e_nonce == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Enrollee Nonce received");
- return -1;
- }
-
- if (os_memcmp(wps->nonce_e, e_nonce, WPS_NONCE_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "WPS: Invalid Enrollee Nonce received");
- return -1;
- }
-
- return 0;
-}
-
-
-static int wps_process_uuid_r(struct wps_data *wps, const u8 *uuid_r)
-{
- if (uuid_r == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No UUID-R received");
- return -1;
- }
-
- os_memcpy(wps->uuid_r, uuid_r, WPS_UUID_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: UUID-R", wps->uuid_r, WPS_UUID_LEN);
-
- return 0;
-}
-
-
-static int wps_process_pubkey(struct wps_data *wps, const u8 *pk,
- size_t pk_len)
-{
- if (pk == NULL || pk_len == 0) {
- wpa_printf(MSG_DEBUG, "WPS: No Public Key received");
- return -1;
- }
-
-#ifdef CONFIG_WPS_OOB
- if (wps->dev_pw_id != DEV_PW_DEFAULT &&
- wps->wps->oob_conf.pubkey_hash) {
- const u8 *addr[1];
- u8 hash[WPS_HASH_LEN];
-
- addr[0] = pk;
- sha256_vector(1, addr, &pk_len, hash);
- if (os_memcmp(hash,
- wpabuf_head(wps->wps->oob_conf.pubkey_hash),
- WPS_OOB_PUBKEY_HASH_LEN) != 0) {
- wpa_printf(MSG_ERROR, "WPS: Public Key hash error");
- return -1;
- }
- }
-#endif /* CONFIG_WPS_OOB */
-
- wpabuf_free(wps->dh_pubkey_r);
- wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len);
- if (wps->dh_pubkey_r == NULL)
- return -1;
-
- if (wps_derive_keys(wps) < 0)
- return -1;
-
- return 0;
-}
-
-
-static int wps_process_r_hash1(struct wps_data *wps, const u8 *r_hash1)
-{
- if (r_hash1 == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No R-Hash1 received");
- return -1;
- }
-
- os_memcpy(wps->peer_hash1, r_hash1, WPS_HASH_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: R-Hash1", wps->peer_hash1, WPS_HASH_LEN);
-
- return 0;
-}
-
-
-static int wps_process_r_hash2(struct wps_data *wps, const u8 *r_hash2)
-{
- if (r_hash2 == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No R-Hash2 received");
- return -1;
- }
-
- os_memcpy(wps->peer_hash2, r_hash2, WPS_HASH_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: R-Hash2", wps->peer_hash2, WPS_HASH_LEN);
-
- return 0;
-}
-
-
-static int wps_process_r_snonce1(struct wps_data *wps, const u8 *r_snonce1)
-{
- u8 hash[SHA256_MAC_LEN];
- const u8 *addr[4];
- size_t len[4];
-
- if (r_snonce1 == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No R-SNonce1 received");
- return -1;
- }
-
- wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce1", r_snonce1,
- WPS_SECRET_NONCE_LEN);
-
- /* R-Hash1 = HMAC_AuthKey(R-S1 || PSK1 || PK_E || PK_R) */
- addr[0] = r_snonce1;
- len[0] = WPS_SECRET_NONCE_LEN;
- addr[1] = wps->psk1;
- len[1] = WPS_PSK_LEN;
- addr[2] = wpabuf_head(wps->dh_pubkey_e);
- len[2] = wpabuf_len(wps->dh_pubkey_e);
- addr[3] = wpabuf_head(wps->dh_pubkey_r);
- len[3] = wpabuf_len(wps->dh_pubkey_r);
- hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
-
- if (os_memcmp(wps->peer_hash1, hash, WPS_HASH_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "WPS: R-Hash1 derived from R-S1 does "
- "not match with the pre-committed value");
- wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
- wps_pwd_auth_fail_event(wps->wps, 1, 1);
- return -1;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the first "
- "half of the device password");
-
- return 0;
-}
-
-
-static int wps_process_r_snonce2(struct wps_data *wps, const u8 *r_snonce2)
-{
- u8 hash[SHA256_MAC_LEN];
- const u8 *addr[4];
- size_t len[4];
-
- if (r_snonce2 == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No R-SNonce2 received");
- return -1;
- }
-
- wpa_hexdump_key(MSG_DEBUG, "WPS: R-SNonce2", r_snonce2,
- WPS_SECRET_NONCE_LEN);
-
- /* R-Hash2 = HMAC_AuthKey(R-S2 || PSK2 || PK_E || PK_R) */
- addr[0] = r_snonce2;
- len[0] = WPS_SECRET_NONCE_LEN;
- addr[1] = wps->psk2;
- len[1] = WPS_PSK_LEN;
- addr[2] = wpabuf_head(wps->dh_pubkey_e);
- len[2] = wpabuf_len(wps->dh_pubkey_e);
- addr[3] = wpabuf_head(wps->dh_pubkey_r);
- len[3] = wpabuf_len(wps->dh_pubkey_r);
- hmac_sha256_vector(wps->authkey, WPS_AUTHKEY_LEN, 4, addr, len, hash);
-
- if (os_memcmp(wps->peer_hash2, hash, WPS_HASH_LEN) != 0) {
- wpa_printf(MSG_DEBUG, "WPS: R-Hash2 derived from R-S2 does "
- "not match with the pre-committed value");
- wps->config_error = WPS_CFG_DEV_PASSWORD_AUTH_FAILURE;
- wps_pwd_auth_fail_event(wps->wps, 1, 2);
- return -1;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: Registrar proved knowledge of the second "
- "half of the device password");
-
- return 0;
-}
-
-
-static int wps_process_cred_e(struct wps_data *wps, const u8 *cred,
- size_t cred_len, int wps2)
-{
- struct wps_parse_attr attr;
- struct wpabuf msg;
-
- wpa_printf(MSG_DEBUG, "WPS: Received Credential");
- os_memset(&wps->cred, 0, sizeof(wps->cred));
- wpabuf_set(&msg, cred, cred_len);
- if (wps_parse_msg(&msg, &attr) < 0 ||
- wps_process_cred(&attr, &wps->cred))
- return -1;
-
- if (os_memcmp(wps->cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) !=
- 0) {
- wpa_printf(MSG_DEBUG, "WPS: MAC Address in the Credential ("
- MACSTR ") does not match with own address (" MACSTR
- ")", MAC2STR(wps->cred.mac_addr),
- MAC2STR(wps->wps->dev.mac_addr));
- /*
- * In theory, this could be consider fatal error, but there are
- * number of deployed implementations using other address here
- * due to unclarity in the specification. For interoperability
- * reasons, allow this to be processed since we do not really
- * use the MAC Address information for anything.
- */
-#ifdef CONFIG_WPS_STRICT
- if (wps2) {
- wpa_printf(MSG_INFO, "WPS: Do not accept incorrect "
- "MAC Address in AP Settings");
- return -1;
- }
-#endif /* CONFIG_WPS_STRICT */
- }
-
-#ifdef CONFIG_WPS2
- if (!(wps->cred.encr_type &
- (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES))) {
- if (wps->cred.encr_type & WPS_ENCR_WEP) {
- wpa_printf(MSG_INFO, "WPS: Reject Credential "
- "due to WEP configuration");
- return -2;
- }
-
- wpa_printf(MSG_INFO, "WPS: Reject Credential due to "
- "invalid encr_type 0x%x", wps->cred.encr_type);
- return -1;
- }
-#endif /* CONFIG_WPS2 */
-
- if (wps->wps->cred_cb) {
- wps->cred.cred_attr = cred - 4;
- wps->cred.cred_attr_len = cred_len + 4;
- wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
- wps->cred.cred_attr = NULL;
- wps->cred.cred_attr_len = 0;
- }
-
- return 0;
-}
-
-
-static int wps_process_creds(struct wps_data *wps, const u8 *cred[],
- size_t cred_len[], size_t num_cred, int wps2)
-{
- size_t i;
- int ok = 0;
-
- if (wps->wps->ap)
- return 0;
-
- if (num_cred == 0) {
- wpa_printf(MSG_DEBUG, "WPS: No Credential attributes "
- "received");
- return -1;
- }
-
- for (i = 0; i < num_cred; i++) {
- int res;
- res = wps_process_cred_e(wps, cred[i], cred_len[i], wps2);
- if (res == 0)
- ok++;
- else if (res == -2)
- wpa_printf(MSG_DEBUG, "WPS: WEP credential skipped");
- else
- return -1;
- }
-
- if (ok == 0) {
- wpa_printf(MSG_DEBUG, "WPS: No valid Credential attribute "
- "received");
- return -1;
- }
-
- return 0;
-}
-
-
-static int wps_process_ap_settings_e(struct wps_data *wps,
- struct wps_parse_attr *attr,
- struct wpabuf *attrs, int wps2)
-{
- struct wps_credential cred;
-
- if (!wps->wps->ap)
- return 0;
-
- if (wps_process_ap_settings(attr, &cred) < 0)
- return -1;
-
- wpa_printf(MSG_INFO, "WPS: Received new AP configuration from "
- "Registrar");
-
- if (os_memcmp(cred.mac_addr, wps->wps->dev.mac_addr, ETH_ALEN) !=
- 0) {
- wpa_printf(MSG_DEBUG, "WPS: MAC Address in the AP Settings ("
- MACSTR ") does not match with own address (" MACSTR
- ")", MAC2STR(cred.mac_addr),
- MAC2STR(wps->wps->dev.mac_addr));
- /*
- * In theory, this could be consider fatal error, but there are
- * number of deployed implementations using other address here
- * due to unclarity in the specification. For interoperability
- * reasons, allow this to be processed since we do not really
- * use the MAC Address information for anything.
- */
-#ifdef CONFIG_WPS_STRICT
- if (wps2) {
- wpa_printf(MSG_INFO, "WPS: Do not accept incorrect "
- "MAC Address in AP Settings");
- return -1;
- }
-#endif /* CONFIG_WPS_STRICT */
- }
-
-#ifdef CONFIG_WPS2
- if (!(cred.encr_type & (WPS_ENCR_NONE | WPS_ENCR_TKIP | WPS_ENCR_AES)))
- {
- if (cred.encr_type & WPS_ENCR_WEP) {
- wpa_printf(MSG_INFO, "WPS: Reject new AP settings "
- "due to WEP configuration");
- return -1;
- }
-
- wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
- "invalid encr_type 0x%x", cred.encr_type);
- return -1;
- }
-#endif /* CONFIG_WPS2 */
-
-#ifdef CONFIG_WPS_STRICT
- if (wps2) {
- if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) ==
- WPS_ENCR_TKIP ||
- (cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
- WPS_AUTH_WPAPSK) {
- wpa_printf(MSG_INFO, "WPS-STRICT: Invalid WSC 2.0 "
- "AP Settings: WPA-Personal/TKIP only");
- return -1;
- }
- }
-#endif /* CONFIG_WPS_STRICT */
-
-#ifdef CONFIG_WPS2
- if ((cred.encr_type & (WPS_ENCR_TKIP | WPS_ENCR_AES)) == WPS_ENCR_TKIP)
- {
- wpa_printf(MSG_DEBUG, "WPS: Upgrade encr_type TKIP -> "
- "TKIP+AES");
- cred.encr_type |= WPS_ENCR_AES;
- }
-
- if ((cred.auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) ==
- WPS_AUTH_WPAPSK) {
- wpa_printf(MSG_DEBUG, "WPS: Upgrade auth_type WPAPSK -> "
- "WPAPSK+WPA2PSK");
- cred.auth_type |= WPS_AUTH_WPA2PSK;
- }
-#endif /* CONFIG_WPS2 */
-
- if (wps->wps->cred_cb) {
- cred.cred_attr = wpabuf_head(attrs);
- cred.cred_attr_len = wpabuf_len(attrs);
- wps->wps->cred_cb(wps->wps->cb_ctx, &cred);
- }
-
- return 0;
-}
-
-
-static enum wps_process_res wps_process_m2(struct wps_data *wps,
- const struct wpabuf *msg,
- struct wps_parse_attr *attr)
-{
- wpa_printf(MSG_DEBUG, "WPS: Received M2");
-
- if (wps->state != RECV_M2) {
- wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
- "receiving M2", wps->state);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_process_registrar_nonce(wps, attr->registrar_nonce) ||
- wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
- wps_process_uuid_r(wps, attr->uuid_r)) {
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps->wps->ap &&
- (wps->wps->ap_setup_locked || wps->dev_password == NULL)) {
- wpa_printf(MSG_DEBUG, "WPS: AP Setup is locked - refuse "
- "registration of a new Registrar");
- wps->config_error = WPS_CFG_SETUP_LOCKED;
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_process_pubkey(wps, attr->public_key, attr->public_key_len) ||
- wps_process_authenticator(wps, attr->authenticator, msg) ||
- wps_process_device_attrs(&wps->peer_dev, attr)) {
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- wps->state = SEND_M3;
- return WPS_CONTINUE;
-}
-
-
-static enum wps_process_res wps_process_m2d(struct wps_data *wps,
- struct wps_parse_attr *attr)
-{
- wpa_printf(MSG_DEBUG, "WPS: Received M2D");
-
- if (wps->state != RECV_M2) {
- wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
- "receiving M2D", wps->state);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- wpa_hexdump_ascii(MSG_DEBUG, "WPS: Manufacturer",
- attr->manufacturer, attr->manufacturer_len);
- wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Name",
- attr->model_name, attr->model_name_len);
- wpa_hexdump_ascii(MSG_DEBUG, "WPS: Model Number",
- attr->model_number, attr->model_number_len);
- wpa_hexdump_ascii(MSG_DEBUG, "WPS: Serial Number",
- attr->serial_number, attr->serial_number_len);
- wpa_hexdump_ascii(MSG_DEBUG, "WPS: Device Name",
- attr->dev_name, attr->dev_name_len);
-
- if (wps->wps->event_cb) {
- union wps_event_data data;
- struct wps_event_m2d *m2d = &data.m2d;
- os_memset(&data, 0, sizeof(data));
- if (attr->config_methods)
- m2d->config_methods =
- WPA_GET_BE16(attr->config_methods);
- m2d->manufacturer = attr->manufacturer;
- m2d->manufacturer_len = attr->manufacturer_len;
- m2d->model_name = attr->model_name;
- m2d->model_name_len = attr->model_name_len;
- m2d->model_number = attr->model_number;
- m2d->model_number_len = attr->model_number_len;
- m2d->serial_number = attr->serial_number;
- m2d->serial_number_len = attr->serial_number_len;
- m2d->dev_name = attr->dev_name;
- m2d->dev_name_len = attr->dev_name_len;
- m2d->primary_dev_type = attr->primary_dev_type;
- if (attr->config_error)
- m2d->config_error =
- WPA_GET_BE16(attr->config_error);
- if (attr->dev_password_id)
- m2d->dev_password_id =
- WPA_GET_BE16(attr->dev_password_id);
- wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_M2D, &data);
- }
-
- wps->state = RECEIVED_M2D;
- return WPS_CONTINUE;
-}
-
-
-static enum wps_process_res wps_process_m4(struct wps_data *wps,
- const struct wpabuf *msg,
- struct wps_parse_attr *attr)
-{
- struct wpabuf *decrypted;
- struct wps_parse_attr eattr;
-
- wpa_printf(MSG_DEBUG, "WPS: Received M4");
-
- if (wps->state != RECV_M4) {
- wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
- "receiving M4", wps->state);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
- wps_process_authenticator(wps, attr->authenticator, msg) ||
- wps_process_r_hash1(wps, attr->r_hash1) ||
- wps_process_r_hash2(wps, attr->r_hash2)) {
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
- attr->encr_settings_len);
- if (decrypted == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
- "Settings attribute");
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_validate_m4_encr(decrypted, attr->version2 != 0) < 0) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
- "attribute");
- if (wps_parse_msg(decrypted, &eattr) < 0 ||
- wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
- wps_process_r_snonce1(wps, eattr.r_snonce1)) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
- wpabuf_free(decrypted);
-
- wps->state = SEND_M5;
- return WPS_CONTINUE;
-}
-
-
-static enum wps_process_res wps_process_m6(struct wps_data *wps,
- const struct wpabuf *msg,
- struct wps_parse_attr *attr)
-{
- struct wpabuf *decrypted;
- struct wps_parse_attr eattr;
-
- wpa_printf(MSG_DEBUG, "WPS: Received M6");
-
- if (wps->state != RECV_M6) {
- wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
- "receiving M6", wps->state);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
- wps_process_authenticator(wps, attr->authenticator, msg)) {
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
- attr->encr_settings_len);
- if (decrypted == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
- "Settings attribute");
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_validate_m6_encr(decrypted, attr->version2 != 0) < 0) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
- "attribute");
- if (wps_parse_msg(decrypted, &eattr) < 0 ||
- wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
- wps_process_r_snonce2(wps, eattr.r_snonce2)) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
- wpabuf_free(decrypted);
-
- wps->state = SEND_M7;
- return WPS_CONTINUE;
-}
-
-
-static enum wps_process_res wps_process_m8(struct wps_data *wps,
- const struct wpabuf *msg,
- struct wps_parse_attr *attr)
-{
- struct wpabuf *decrypted;
- struct wps_parse_attr eattr;
-
- wpa_printf(MSG_DEBUG, "WPS: Received M8");
-
- if (wps->state != RECV_M8) {
- wpa_printf(MSG_DEBUG, "WPS: Unexpected state (%d) for "
- "receiving M8", wps->state);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_process_enrollee_nonce(wps, attr->enrollee_nonce) ||
- wps_process_authenticator(wps, attr->authenticator, msg)) {
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
- attr->encr_settings_len);
- if (decrypted == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: Failed to decrypted Encrypted "
- "Settings attribute");
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- if (wps_validate_m8_encr(decrypted, wps->wps->ap, attr->version2 != 0)
- < 0) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
-
- wpa_printf(MSG_DEBUG, "WPS: Processing decrypted Encrypted Settings "
- "attribute");
- if (wps_parse_msg(decrypted, &eattr) < 0 ||
- wps_process_key_wrap_auth(wps, decrypted, eattr.key_wrap_auth) ||
- wps_process_creds(wps, eattr.cred, eattr.cred_len,
- eattr.num_cred, attr->version2 != NULL) ||
- wps_process_ap_settings_e(wps, &eattr, decrypted,
- attr->version2 != NULL)) {
- wpabuf_free(decrypted);
- wps->state = SEND_WSC_NACK;
- return WPS_CONTINUE;
- }
- wpabuf_free(decrypted);
-
- wps->state = WPS_MSG_DONE;
- return WPS_CONTINUE;
-}
-
-
-static enum wps_process_res wps_process_wsc_msg(struct wps_data *wps,
- const struct wpabuf *msg)
-{
- struct wps_parse_attr attr;
- enum wps_process_res ret = WPS_CONTINUE;
-
- wpa_printf(MSG_DEBUG, "WPS: Received WSC_MSG");
-
- if (wps_parse_msg(msg, &attr) < 0)
- return WPS_FAILURE;
-
- if (attr.enrollee_nonce == NULL ||
- os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
- wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
- return WPS_FAILURE;
- }
-
- if (attr.msg_type == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
- return WPS_FAILURE;
- }
-
- switch (*attr.msg_type) {
- case WPS_M2:
- if (wps_validate_m2(msg) < 0)
- return WPS_FAILURE;
- ret = wps_process_m2(wps, msg, &attr);
- break;
- case WPS_M2D:
- if (wps_validate_m2d(msg) < 0)
- return WPS_FAILURE;
- ret = wps_process_m2d(wps, &attr);
- break;
- case WPS_M4:
- if (wps_validate_m4(msg) < 0)
- return WPS_FAILURE;
- ret = wps_process_m4(wps, msg, &attr);
- if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
- wps_fail_event(wps->wps, WPS_M4, wps->config_error);
- break;
- case WPS_M6:
- if (wps_validate_m6(msg) < 0)
- return WPS_FAILURE;
- ret = wps_process_m6(wps, msg, &attr);
- if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
- wps_fail_event(wps->wps, WPS_M6, wps->config_error);
- break;
- case WPS_M8:
- if (wps_validate_m8(msg) < 0)
- return WPS_FAILURE;
- ret = wps_process_m8(wps, msg, &attr);
- if (ret == WPS_FAILURE || wps->state == SEND_WSC_NACK)
- wps_fail_event(wps->wps, WPS_M8, wps->config_error);
- break;
- default:
- wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
- *attr.msg_type);
- return WPS_FAILURE;
- }
-
- /*
- * Save a copy of the last message for Authenticator derivation if we
- * are continuing. However, skip M2D since it is not authenticated and
- * neither is the ACK/NACK response frame. This allows the possibly
- * following M2 to be processed correctly by using the previously sent
- * M1 in Authenticator derivation.
- */
- if (ret == WPS_CONTINUE && *attr.msg_type != WPS_M2D) {
- /* Save a copy of the last message for Authenticator derivation
- */
- wpabuf_free(wps->last_msg);
- wps->last_msg = wpabuf_dup(msg);
- }
-
- return ret;
-}
-
-
-static enum wps_process_res wps_process_wsc_ack(struct wps_data *wps,
- const struct wpabuf *msg)
-{
- struct wps_parse_attr attr;
-
- wpa_printf(MSG_DEBUG, "WPS: Received WSC_ACK");
-
- if (wps_parse_msg(msg, &attr) < 0)
- return WPS_FAILURE;
-
- if (attr.msg_type == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
- return WPS_FAILURE;
- }
-
- if (*attr.msg_type != WPS_WSC_ACK) {
- wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
- *attr.msg_type);
- return WPS_FAILURE;
- }
-
- if (attr.registrar_nonce == NULL ||
- os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
- {
- wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
- return WPS_FAILURE;
- }
-
- if (attr.enrollee_nonce == NULL ||
- os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
- wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
- return WPS_FAILURE;
- }
-
- if (wps->state == RECV_ACK && wps->wps->ap) {
- wpa_printf(MSG_DEBUG, "WPS: External Registrar registration "
- "completed successfully");
- wps_success_event(wps->wps);
- wps->state = WPS_FINISHED;
- return WPS_DONE;
- }
-
- return WPS_FAILURE;
-}
-
-
-static enum wps_process_res wps_process_wsc_nack(struct wps_data *wps,
- const struct wpabuf *msg)
-{
- struct wps_parse_attr attr;
- u16 config_error;
-
- wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
-
- if (wps_parse_msg(msg, &attr) < 0)
- return WPS_FAILURE;
-
- if (attr.msg_type == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
- return WPS_FAILURE;
- }
-
- if (*attr.msg_type != WPS_WSC_NACK) {
- wpa_printf(MSG_DEBUG, "WPS: Invalid Message Type %d",
- *attr.msg_type);
- return WPS_FAILURE;
- }
-
- if (attr.registrar_nonce == NULL ||
- os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
- {
- wpa_printf(MSG_DEBUG, "WPS: Mismatch in registrar nonce");
- wpa_hexdump(MSG_DEBUG, "WPS: Received Registrar Nonce",
- attr.registrar_nonce, WPS_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: Expected Registrar Nonce",
- wps->nonce_r, WPS_NONCE_LEN);
- return WPS_FAILURE;
- }
-
- if (attr.enrollee_nonce == NULL ||
- os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
- wpa_printf(MSG_DEBUG, "WPS: Mismatch in enrollee nonce");
- wpa_hexdump(MSG_DEBUG, "WPS: Received Enrollee Nonce",
- attr.enrollee_nonce, WPS_NONCE_LEN);
- wpa_hexdump(MSG_DEBUG, "WPS: Expected Enrollee Nonce",
- wps->nonce_e, WPS_NONCE_LEN);
- return WPS_FAILURE;
- }
-
- if (attr.config_error == NULL) {
- wpa_printf(MSG_DEBUG, "WPS: No Configuration Error attribute "
- "in WSC_NACK");
- return WPS_FAILURE;
- }
-
- config_error = WPA_GET_BE16(attr.config_error);
- wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with "
- "Configuration Error %d", config_error);
-
- switch (wps->state) {
- case RECV_M4:
- wps_fail_event(wps->wps, WPS_M3, config_error);
- break;
- case RECV_M6:
- wps_fail_event(wps->wps, WPS_M5, config_error);
- break;
- case RECV_M8:
- wps_fail_event(wps->wps, WPS_M7, config_error);
- break;
- default:
- break;
- }
-
- /* Followed by NACK if Enrollee is Supplicant or EAP-Failure if
- * Enrollee is Authenticator */
- wps->state = SEND_WSC_NACK;
-
- return WPS_FAILURE;
-}
-
-
-enum wps_process_res wps_enrollee_process_msg(struct wps_data *wps,
- enum wsc_op_code op_code,
- const struct wpabuf *msg)
-{
-
- wpa_printf(MSG_DEBUG, "WPS: Processing received message (len=%lu "
- "op_code=%d)",
- (unsigned long) wpabuf_len(msg), op_code);
-
- if (op_code == WSC_UPnP) {
- /* Determine the OpCode based on message type attribute */
- struct wps_parse_attr attr;
- if (wps_parse_msg(msg, &attr) == 0 && attr.msg_type) {
- if (*attr.msg_type == WPS_WSC_ACK)
- op_code = WSC_ACK;
- else if (*attr.msg_type == WPS_WSC_NACK)
- op_code = WSC_NACK;
- }
- }
-
- switch (op_code) {
- case WSC_MSG:
- case WSC_UPnP:
- return wps_process_wsc_msg(wps, msg);
- case WSC_ACK:
- if (wps_validate_wsc_ack(msg) < 0)
- return WPS_FAILURE;
- return wps_process_wsc_ack(wps, msg);
- case WSC_NACK:
- if (wps_validate_wsc_nack(msg) < 0)
- return WPS_FAILURE;
- return wps_process_wsc_nack(wps, msg);
- default:
- wpa_printf(MSG_DEBUG, "WPS: Unsupported op_code %d", op_code);
- return WPS_FAILURE;
- }
-}
projects / mech_eap.git / blobdiff