* 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.
+ * This software may be distributed under the terms of the BSD license.
+ * See README for more details.
*/
#include "includes.h"
#include "common.h"
#include "crypto/crypto.h"
#include "crypto/sha256.h"
+#include "crypto/random.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;
const u8 *addr[4];
size_t len[4];
- if (os_get_random(wps->snonce, 2 * WPS_SECRET_NONCE_LEN) < 0)
+ if (random_get_bytes(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",
static struct wpabuf * wps_build_m1(struct wps_data *wps)
{
struct wpabuf *msg;
+ u16 config_methods;
- if (os_get_random(wps->nonce_e, WPS_NONCE_LEN) < 0)
+ if (random_get_bytes(wps->nonce_e, WPS_NONCE_LEN) < 0)
return NULL;
wpa_hexdump(MSG_DEBUG, "WPS: Enrollee Nonce",
wps->nonce_e, WPS_NONCE_LEN);
if (msg == NULL)
return NULL;
+ config_methods = wps->wps->config_methods;
+ if (wps->wps->ap && !wps->pbc_in_m1 &&
+ (wps->dev_password_len != 0 ||
+ (config_methods & WPS_CONFIG_DISPLAY))) {
+ /*
+ * These are the methods that the AP supports as an Enrollee
+ * for adding external Registrars, so remove PushButton.
+ *
+ * As a workaround for Windows 7 mechanism for probing WPS
+ * capabilities from M1, leave PushButton option if no PIN
+ * method is available or if WPS configuration enables PBC
+ * workaround.
+ */
+ config_methods &= ~WPS_CONFIG_PUSHBUTTON;
+ config_methods &= ~(WPS_CONFIG_VIRT_PUSHBUTTON |
+ WPS_CONFIG_PHY_PUSHBUTTON);
+ }
+
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_mac_addr(msg, wps->mac_addr_e) ||
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_config_methods(msg, 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_rf_bands(&wps->wps->dev, msg,
+ wps->wps->rf_band_cb(wps->wps->cb_ctx)) ||
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_version2(msg)) {
+ wps_build_wfa_ext(msg, 0, NULL, 0) ||
+ wps_build_vendor_ext_m1(&wps->wps->dev, msg)) {
wpabuf_free(msg);
return NULL;
}
wps_build_msg_type(msg, WPS_M3) ||
wps_build_registrar_nonce(wps, msg) ||
wps_build_e_hash(wps, msg) ||
- wps_build_version2(msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(msg);
return NULL;
wps_build_e_snonce1(wps, plain) ||
wps_build_key_wrap_auth(wps, plain) ||
wps_build_encr_settings(wps, msg, plain) ||
- wps_build_version2(msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(plain);
wpabuf_free(msg);
static int wps_build_cred_auth_type(struct wps_data *wps, struct wpabuf *msg)
{
- wpa_printf(MSG_DEBUG, "WPS: * Authentication Type");
+ wpa_printf(MSG_DEBUG, "WPS: * Authentication Type (0x%x)",
+ wps->wps->ap_auth_type);
wpabuf_put_be16(msg, ATTR_AUTH_TYPE);
wpabuf_put_be16(msg, 2);
- wpabuf_put_be16(msg, wps->wps->auth_types);
+ wpabuf_put_be16(msg, wps->wps->ap_auth_type);
return 0;
}
static int wps_build_cred_encr_type(struct wps_data *wps, struct wpabuf *msg)
{
- wpa_printf(MSG_DEBUG, "WPS: * Encryption Type");
+ wpa_printf(MSG_DEBUG, "WPS: * Encryption Type (0x%x)",
+ wps->wps->ap_encr_type);
wpabuf_put_be16(msg, ATTR_ENCR_TYPE);
wpabuf_put_be16(msg, 2);
- wpabuf_put_be16(msg, wps->wps->encr_types);
+ wpabuf_put_be16(msg, wps->wps->ap_encr_type);
return 0;
}
static int wps_build_cred_network_key(struct wps_data *wps, struct wpabuf *msg)
{
- wpa_printf(MSG_DEBUG, "WPS: * Network Key");
+ if ((wps->wps->ap_auth_type & (WPS_AUTH_WPAPSK | WPS_AUTH_WPA2PSK)) &&
+ wps->wps->network_key_len == 0) {
+ char hex[65];
+ u8 psk[32];
+ /* Generate a random per-device PSK */
+ if (random_get_bytes(psk, sizeof(psk)) < 0)
+ return -1;
+ wpa_hexdump_key(MSG_DEBUG, "WPS: Generated per-device PSK",
+ psk, sizeof(psk));
+ wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)",
+ (unsigned int) wps->new_psk_len * 2);
+ wpa_snprintf_hex(hex, sizeof(hex), psk, sizeof(psk));
+ wpabuf_put_be16(msg, ATTR_NETWORK_KEY);
+ wpabuf_put_be16(msg, sizeof(psk) * 2);
+ wpabuf_put_data(msg, hex, sizeof(psk) * 2);
+ if (wps->wps->registrar) {
+ wps_cb_new_psk(wps->wps->registrar,
+ wps->peer_dev.mac_addr,
+ wps->p2p_dev_addr, psk, sizeof(psk));
+ }
+ return 0;
+ }
+
+ wpa_printf(MSG_DEBUG, "WPS: * Network Key (len=%u)",
+ (unsigned int) wps->wps->network_key_len);
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);
static int wps_build_ap_settings(struct wps_data *wps, struct wpabuf *plain)
{
+ const u8 *start, *end;
+ int ret;
+
if (wps->wps->ap_settings) {
wpa_printf(MSG_DEBUG, "WPS: * AP Settings (pre-configured)");
wpabuf_put_data(plain, wps->wps->ap_settings,
return 0;
}
- return wps_build_cred_ssid(wps, plain) ||
+ wpa_printf(MSG_DEBUG, "WPS: * AP Settings based on current configuration");
+ start = wpabuf_put(plain, 0);
+ ret = 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);
+ end = wpabuf_put(plain, 0);
+
+ wpa_hexdump_key(MSG_DEBUG, "WPS: Plaintext AP Settings",
+ start, end - start);
+
+ return ret;
}
(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_version2(msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(plain);
wpabuf_free(msg);
wps_build_msg_type(msg, WPS_WSC_DONE) ||
wps_build_enrollee_nonce(wps, msg) ||
wps_build_registrar_nonce(wps, msg) ||
- wps_build_version2(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_success_event(wps->wps, wps->peer_dev.mac_addr);
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_version2(msg)) {
- 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_version2(msg)) {
- wpabuf_free(msg);
- return NULL;
- }
-
- return msg;
-}
-
-
struct wpabuf * wps_enrollee_get_msg(struct wps_data *wps,
enum wsc_op_code *op_code)
{
return -1;
}
-#ifdef CONFIG_WPS_OOB
- if (wps->dev_pw_id != DEV_PW_DEFAULT &&
- wps->wps->oob_conf.pubkey_hash) {
- const u8 *addr[1];
+ if (wps->peer_pubkey_hash_set) {
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),
+ sha256_vector(1, &pk, &pk_len, hash);
+ if (os_memcmp(hash, wps->peer_pubkey_hash,
WPS_OOB_PUBKEY_HASH_LEN) != 0) {
- wpa_printf(MSG_ERROR, "WPS: Public Key hash error");
+ wpa_printf(MSG_ERROR, "WPS: Public Key hash mismatch");
+ wpa_hexdump(MSG_DEBUG, "WPS: Received public key",
+ pk, pk_len);
+ wpa_hexdump(MSG_DEBUG, "WPS: Calculated public key "
+ "hash", hash, WPS_OOB_PUBKEY_HASH_LEN);
+ wpa_hexdump(MSG_DEBUG, "WPS: Expected public key hash",
+ wps->peer_pubkey_hash,
+ WPS_OOB_PUBKEY_HASH_LEN);
+ wps->config_error = WPS_CFG_PUBLIC_KEY_HASH_MISMATCH;
return -1;
}
}
-#endif /* CONFIG_WPS_OOB */
wpabuf_free(wps->dh_pubkey_r);
wps->dh_pubkey_r = wpabuf_alloc_copy(pk, pk_len);
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);
+ wps_pwd_auth_fail_event(wps->wps, 1, 1, wps->peer_dev.mac_addr);
return -1;
}
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);
+ wps_pwd_auth_fail_event(wps->wps, 1, 2, wps->peer_dev.mac_addr);
return -1;
}
static int wps_process_cred_e(struct wps_data *wps, const u8 *cred,
- size_t cred_len)
+ size_t cred_len, int wps2)
{
struct wps_parse_attr attr;
struct wpabuf msg;
+ int ret = 0;
wpa_printf(MSG_DEBUG, "WPS: Received Credential");
os_memset(&wps->cred, 0, sizeof(wps->cred));
* 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 */
+ }
+
+ 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");
+ wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED;
+ return -2;
+ }
+
+ wpa_printf(MSG_INFO, "WPS: Reject Credential due to "
+ "invalid encr_type 0x%x", wps->cred.encr_type);
+ return -1;
}
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);
+ ret = wps->wps->cred_cb(wps->wps->cb_ctx, &wps->cred);
wps->cred.cred_attr = NULL;
wps->cred.cred_attr_len = 0;
}
- return 0;
+ return ret;
}
static int wps_process_creds(struct wps_data *wps, const u8 *cred[],
- size_t cred_len[], size_t num_cred)
+ size_t cred_len[], size_t num_cred, int wps2)
{
size_t i;
+ int ok = 0;
if (wps->wps->ap)
return 0;
}
for (i = 0; i < num_cred; i++) {
- if (wps_process_cred_e(wps, cred[i], cred_len[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)
+ struct wpabuf *attrs, int wps2)
{
struct wps_credential cred;
* 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 */
+ }
+
+ 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");
+ wps->error_indication = WPS_EI_SECURITY_WEP_PROHIBITED;
+ return -1;
+ }
+
+ wpa_printf(MSG_INFO, "WPS: Reject new AP settings due to "
+ "invalid encr_type 0x%x", cred.encr_type);
+ return -1;
+ }
+
+#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");
+ wps->error_indication =
+ WPS_EI_SECURITY_TKIP_ONLY_PROHIBITED;
+ return -1;
+ }
+ }
+#endif /* CONFIG_WPS_STRICT */
+
+ 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;
}
if (wps->wps->cred_cb) {
}
+static int wps_process_dev_pw_id(struct wps_data *wps, const u8 *dev_pw_id)
+{
+ u16 id;
+
+ if (dev_pw_id == NULL) {
+ wpa_printf(MSG_DEBUG, "WPS: Device Password ID");
+ return -1;
+ }
+
+ id = WPA_GET_BE16(dev_pw_id);
+ if (wps->dev_pw_id == id) {
+ wpa_printf(MSG_DEBUG, "WPS: Device Password ID %u", id);
+ return 0;
+ }
+
+#ifdef CONFIG_P2P
+ if ((id == DEV_PW_DEFAULT &&
+ wps->dev_pw_id == DEV_PW_REGISTRAR_SPECIFIED) ||
+ (id == DEV_PW_REGISTRAR_SPECIFIED &&
+ wps->dev_pw_id == DEV_PW_DEFAULT)) {
+ /*
+ * Common P2P use cases indicate whether the PIN is from the
+ * client or GO using Device Password Id in M1/M2 in a way that
+ * does not look fully compliant with WSC specification. Anyway,
+ * this is deployed and needs to be allowed, so ignore changes
+ * between Registrar-Specified and Default PIN.
+ */
+ wpa_printf(MSG_DEBUG, "WPS: Allow PIN Device Password ID "
+ "change");
+ return 0;
+ }
+#endif /* CONFIG_P2P */
+
+ wpa_printf(MSG_DEBUG, "WPS: Registrar trying to change Device Password "
+ "ID from %u to %u", wps->dev_pw_id, id);
+
+ if (wps->dev_pw_id == DEV_PW_PUSHBUTTON && id == DEV_PW_DEFAULT) {
+ wpa_printf(MSG_DEBUG,
+ "WPS: Workaround - ignore PBC-to-PIN change");
+ return 0;
+ }
+
+ if (wps->alt_dev_password && wps->alt_dev_pw_id == id) {
+ wpa_printf(MSG_DEBUG, "WPS: Found a matching Device Password");
+ os_free(wps->dev_password);
+ wps->dev_pw_id = wps->alt_dev_pw_id;
+ wps->dev_password = wps->alt_dev_password;
+ wps->dev_password_len = wps->alt_dev_password_len;
+ wps->alt_dev_password = NULL;
+ wps->alt_dev_password_len = 0;
+ return 0;
+ }
+
+ return -1;
+}
+
+
static enum wps_process_res wps_process_m2(struct wps_data *wps,
const struct wpabuf *msg,
struct wps_parse_attr *attr)
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_process_uuid_r(wps, attr->uuid_r) ||
+ wps_process_dev_pw_id(wps, attr->dev_password_id)) {
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
+ /*
+ * Stop here on an AP as an Enrollee if AP Setup is locked unless the
+ * special locked mode is used to allow protocol run up to M7 in order
+ * to support external Registrars that only learn the current AP
+ * configuration without changing it.
+ */
if (wps->wps->ap &&
- (wps->wps->ap_setup_locked || wps->dev_password == NULL)) {
+ ((wps->wps->ap_setup_locked && wps->wps->ap_setup_locked != 2) ||
+ 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;
return WPS_CONTINUE;
}
+#ifdef CONFIG_WPS_NFC
+ if (wps->peer_pubkey_hash_set) {
+ struct wpabuf *decrypted;
+ struct wps_parse_attr eattr;
+
+ decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
+ attr->encr_settings_len);
+ if (decrypted == NULL) {
+ wpa_printf(MSG_DEBUG, "WPS: Failed to decrypt "
+ "Encrypted Settings attribute");
+ 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)) {
+ wpabuf_free(decrypted);
+ wps->state = SEND_WSC_NACK;
+ return WPS_CONTINUE;
+ }
+ wpabuf_free(decrypted);
+
+ wps->state = WPS_MSG_DONE;
+ return WPS_CONTINUE;
+ }
+#endif /* CONFIG_WPS_NFC */
+
wps->state = SEND_M3;
return WPS_CONTINUE;
}
return WPS_CONTINUE;
}
+ if (wps_validate_m4_encr(decrypted, attr->version2 != NULL) < 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 ||
return WPS_CONTINUE;
}
+ if (wps_validate_m6_encr(decrypted, attr->version2 != NULL) < 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 ||
}
wpabuf_free(decrypted);
+ if (wps->wps->ap)
+ wps->wps->event_cb(wps->wps->cb_ctx, WPS_EV_AP_PIN_SUCCESS,
+ NULL);
+
wps->state = SEND_M7;
return WPS_CONTINUE;
}
return WPS_CONTINUE;
}
+ if (wps->wps->ap && wps->wps->ap_setup_locked) {
+ /*
+ * Stop here if special ap_setup_locked == 2 mode allowed the
+ * protocol to continue beyond M2. This allows ER to learn the
+ * current AP settings without changing them.
+ */
+ 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;
+ }
+
decrypted = wps_decrypt_encr_settings(wps, attr->encr_settings,
attr->encr_settings_len);
if (decrypted == NULL) {
return WPS_CONTINUE;
}
+ if (wps_validate_m8_encr(decrypted, wps->wps->ap,
+ attr->version2 != NULL) < 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) ||
- wps_process_ap_settings_e(wps, &eattr, decrypted)) {
+ 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;
return WPS_FAILURE;
if (attr.enrollee_nonce == NULL ||
- os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
+ 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;
+ wps->state = SEND_WSC_NACK;
+ return WPS_CONTINUE;
}
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_fail_event(wps->wps, WPS_M4, wps->config_error,
+ wps->error_indication,
+ wps->peer_dev.mac_addr);
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_fail_event(wps->wps, WPS_M6, wps->config_error,
+ wps->error_indication,
+ wps->peer_dev.mac_addr);
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_fail_event(wps->wps, WPS_M8, wps->config_error,
+ wps->error_indication,
+ wps->peer_dev.mac_addr);
break;
default:
wpa_printf(MSG_DEBUG, "WPS: Unsupported Message Type %d",
}
if (attr.registrar_nonce == NULL ||
- os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
+ 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)) {
+ 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_success_event(wps->wps, wps->peer_dev.mac_addr);
wps->state = WPS_FINISHED;
return WPS_DONE;
}
const struct wpabuf *msg)
{
struct wps_parse_attr attr;
+ u16 config_error;
wpa_printf(MSG_DEBUG, "WPS: Received WSC_NACK");
}
if (attr.registrar_nonce == NULL ||
- os_memcmp(wps->nonce_r, attr.registrar_nonce, WPS_NONCE_LEN != 0))
+ 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",
}
if (attr.enrollee_nonce == NULL ||
- os_memcmp(wps->nonce_e, attr.enrollee_nonce, WPS_NONCE_LEN != 0)) {
+ 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);
return WPS_FAILURE;
}
+ config_error = WPA_GET_BE16(attr.config_error);
wpa_printf(MSG_DEBUG, "WPS: Registrar terminated negotiation with "
- "Configuration Error %d", WPA_GET_BE16(attr.config_error));
+ "Configuration Error %d", config_error);
switch (wps->state) {
case RECV_M4:
- wps_fail_event(wps->wps, WPS_M3);
+ wps_fail_event(wps->wps, WPS_M3, config_error,
+ wps->error_indication, wps->peer_dev.mac_addr);
break;
case RECV_M6:
- wps_fail_event(wps->wps, WPS_M5);
+ wps_fail_event(wps->wps, WPS_M5, config_error,
+ wps->error_indication, wps->peer_dev.mac_addr);
break;
case RECV_M8:
- wps_fail_event(wps->wps, WPS_M7);
+ wps_fail_event(wps->wps, WPS_M7, config_error,
+ wps->error_indication, wps->peer_dev.mac_addr);
break;
default:
break;
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);
projects / thirdparty / hostap.git / blobdiff