#include "includes.h"
#include "common.h"
-#include "sha256.h"
+#include "crypto/crypto.h"
+#include "crypto/sha256.h"
#include "wps_i.h"
#include "wps_dev_attr.h"
static int wps_build_wps_state(struct wps_data *wps, struct wpabuf *msg)
{
- wpa_printf(MSG_DEBUG, "WPS: * Wi-Fi Protected Setup State");
+ 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, WPS_STATE_CONFIGURED);
+ wpabuf_put_u8(msg, state);
return 0;
}
static struct wpabuf * wps_build_m1(struct wps_data *wps)
{
struct wpabuf *msg;
- u16 methods;
if (os_get_random(wps->nonce_e, WPS_NONCE_LEN) < 0)
return NULL;
if (msg == NULL)
return NULL;
- methods = WPS_CONFIG_LABEL | WPS_CONFIG_DISPLAY | WPS_CONFIG_KEYPAD;
- if (wps->pbc)
- methods |= WPS_CONFIG_PUSHBUTTON;
-
if (wps_build_version(msg) ||
wps_build_msg_type(msg, WPS_M1) ||
wps_build_uuid_e(msg, wps->uuid_e) ||
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, methods) ||
+ 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_os_version(&wps->wps->dev, msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
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_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_wfa_ext(msg, 0, NULL, 0) ||
wps_build_authenticator(wps, msg)) {
wpabuf_free(plain);
wpabuf_free(msg);
}
+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);
+ plain = wpabuf_alloc(500 + wps->wps->ap_settings_len);
if (plain == NULL)
return NULL;
- msg = wpabuf_alloc(1000);
+ msg = wpabuf_alloc(1000 + wps->wps->ap_settings_len);
if (msg == NULL) {
wpabuf_free(plain);
return NULL;
wps_build_msg_type(msg, WPS_M7) ||
wps_build_registrar_nonce(wps, msg) ||
wps_build_e_snonce2(wps, plain) ||
- (wps->authenticator &&
- (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))) ||
+ (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);
}
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;
}
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_registrar_nonce(wps, msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
- if (wps->authenticator)
+ if (wps->wps->ap)
wps->state = RECV_ACK;
else {
wps_success_event(wps->wps);
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_registrar_nonce(wps, msg) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
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_config_error(msg, wps->config_error) ||
+ wps_build_wfa_ext(msg, 0, NULL, 0)) {
wpabuf_free(msg);
return NULL;
}
*op_code = WSC_MSG;
break;
case RECEIVED_M2D:
- if (wps->authenticator) {
+ if (wps->wps->ap) {
msg = wps_build_wsc_nack(wps);
*op_code = WSC_NACK;
break;
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)
if (wps_derive_keys(wps) < 0)
return -1;
- if (wps->request_type == WPS_REQ_WLAN_MANAGER_REGISTRAR &&
- wps_derive_mgmt_keys(wps) < 0)
- return -1;
-
return 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: 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;
}
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;
wps_process_cred(&attr, &wps->cred))
return -1;
- if (wps->wps->cred_cb)
+ 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)
+ size_t cred_len[], size_t num_cred, int wps2)
{
size_t i;
+ int ok = 0;
- if (wps->authenticator)
+ if (wps->wps->ap)
return 0;
if (num_cred == 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 wps_parse_attr *attr,
+ struct wpabuf *attrs, int wps2)
{
struct wps_credential cred;
- if (!wps->authenticator)
+ if (!wps->wps->ap)
return 0;
if (wps_process_ap_settings(attr, &cred) < 0)
wpa_printf(MSG_INFO, "WPS: Received new AP configuration from "
"Registrar");
- if (wps->wps->cred_cb)
+ 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;
}
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_pubkey(wps, attr->public_key, attr->public_key_len) ||
- wps_process_authenticator(wps, attr->authenticator, msg)) {
+ wps_process_uuid_r(wps, attr->uuid_r)) {
wps->state = SEND_WSC_NACK;
return WPS_CONTINUE;
}
- if (wps->authenticator && wps->wps->ap_setup_locked) {
+ 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;
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;
}
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 ||
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 ||
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) ||
- wps_process_ap_settings_e(wps, &eattr)) {
+ 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;
if (wps_parse_msg(msg, &attr) < 0)
return WPS_FAILURE;
- if (attr.version == NULL || *attr.version != WPS_VERSION) {
- wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
- attr.version ? *attr.version : 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");
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);
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);
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);
return WPS_FAILURE;
}
- if (ret == WPS_CONTINUE) {
+ /*
+ * 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);
if (wps_parse_msg(msg, &attr) < 0)
return WPS_FAILURE;
- if (attr.version == NULL || *attr.version != WPS_VERSION) {
- wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
- attr.version ? *attr.version : 0);
- return WPS_FAILURE;
- }
-
if (attr.msg_type == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
return WPS_FAILURE;
return WPS_FAILURE;
}
- if (wps->state == RECV_ACK && wps->authenticator) {
+ if (wps->state == RECV_ACK && wps->wps->ap) {
wpa_printf(MSG_DEBUG, "WPS: External Registrar registration "
"completed successfully");
wps_success_event(wps->wps);
if (wps_parse_msg(msg, &attr) < 0)
return WPS_FAILURE;
- if (attr.version == NULL || *attr.version != WPS_VERSION) {
- wpa_printf(MSG_DEBUG, "WPS: Unsupported message version 0x%x",
- attr.version ? *attr.version : 0);
- return WPS_FAILURE;
- }
-
if (attr.msg_type == NULL) {
wpa_printf(MSG_DEBUG, "WPS: No Message Type attribute");
return WPS_FAILURE;
"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);
projects / libeap.git / blobdiff