+++ /dev/null
-/*
- * hostapd / EAP-GTC (RFC 3748)
- * Copyright (c) 2004-2006, Jouni Malinen <j@w1.fi>
- *
- * This software may be distributed under the terms of the BSD license.
- * See README for more details.
- */
-
-#include "includes.h"
-
-#include "common.h"
-#include "eap_i.h"
-
-
-struct eap_gtc_data {
- enum { CONTINUE, SUCCESS, FAILURE } state;
- int prefix;
-};
-
-
-static void * eap_gtc_init(struct eap_sm *sm)
-{
- struct eap_gtc_data *data;
-
- data = os_zalloc(sizeof(*data));
- if (data == NULL)
- return NULL;
- data->state = CONTINUE;
-
-#ifdef EAP_SERVER_FAST
- if (sm->m && sm->m->vendor == EAP_VENDOR_IETF &&
- sm->m->method == EAP_TYPE_FAST) {
- wpa_printf(MSG_DEBUG, "EAP-GTC: EAP-FAST tunnel - use prefix "
- "with challenge/response");
- data->prefix = 1;
- }
-#endif /* EAP_SERVER_FAST */
-
- return data;
-}
-
-
-static void eap_gtc_reset(struct eap_sm *sm, void *priv)
-{
- struct eap_gtc_data *data = priv;
- os_free(data);
-}
-
-
-static struct wpabuf * eap_gtc_buildReq(struct eap_sm *sm, void *priv, u8 id)
-{
- struct eap_gtc_data *data = priv;
- struct wpabuf *req;
- char *msg;
- size_t msg_len;
-
- msg = data->prefix ? "CHALLENGE=Password" : "Password";
-
- msg_len = os_strlen(msg);
- req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_GTC, msg_len,
- EAP_CODE_REQUEST, id);
- if (req == NULL) {
- wpa_printf(MSG_ERROR, "EAP-GTC: Failed to allocate memory for "
- "request");
- data->state = FAILURE;
- return NULL;
- }
-
- wpabuf_put_data(req, msg, msg_len);
-
- data->state = CONTINUE;
-
- return req;
-}
-
-
-static Boolean eap_gtc_check(struct eap_sm *sm, void *priv,
- struct wpabuf *respData)
-{
- const u8 *pos;
- size_t len;
-
- pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_GTC, respData, &len);
- if (pos == NULL || len < 1) {
- wpa_printf(MSG_INFO, "EAP-GTC: Invalid frame");
- return TRUE;
- }
-
- return FALSE;
-}
-
-
-static void eap_gtc_process(struct eap_sm *sm, void *priv,
- struct wpabuf *respData)
-{
- struct eap_gtc_data *data = priv;
- const u8 *pos;
- size_t rlen;
-
- pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_GTC, respData, &rlen);
- if (pos == NULL || rlen < 1)
- return; /* Should not happen - frame already validated */
-
- wpa_hexdump_ascii_key(MSG_MSGDUMP, "EAP-GTC: Response", pos, rlen);
-
-#ifdef EAP_SERVER_FAST
- if (data->prefix) {
- const u8 *pos2, *end;
- /* "RESPONSE=<user>\0<password>" */
- if (rlen < 10) {
- wpa_printf(MSG_DEBUG, "EAP-GTC: Too short response "
- "for EAP-FAST prefix");
- data->state = FAILURE;
- return;
- }
-
- end = pos + rlen;
- pos += 9;
- pos2 = pos;
- while (pos2 < end && *pos2)
- pos2++;
- if (pos2 == end) {
- wpa_printf(MSG_DEBUG, "EAP-GTC: No password in "
- "response to EAP-FAST prefix");
- data->state = FAILURE;
- return;
- }
-
- wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-GTC: Response user",
- pos, pos2 - pos);
- if (sm->identity && sm->require_identity_match &&
- (pos2 - pos != (int) sm->identity_len ||
- os_memcmp(pos, sm->identity, sm->identity_len))) {
- wpa_printf(MSG_DEBUG, "EAP-GTC: Phase 2 Identity did "
- "not match with required Identity");
- wpa_hexdump_ascii(MSG_MSGDUMP, "EAP-GTC: Expected "
- "identity",
- sm->identity, sm->identity_len);
- data->state = FAILURE;
- return;
- } else {
- os_free(sm->identity);
- sm->identity_len = pos2 - pos;
- sm->identity = os_malloc(sm->identity_len);
- if (sm->identity == NULL) {
- data->state = FAILURE;
- return;
- }
- os_memcpy(sm->identity, pos, sm->identity_len);
- }
-
- if (eap_user_get(sm, sm->identity, sm->identity_len, 1) != 0) {
- wpa_hexdump_ascii(MSG_DEBUG, "EAP-GTC: Phase2 "
- "Identity not found in the user "
- "database",
- sm->identity, sm->identity_len);
- data->state = FAILURE;
- return;
- }
-
- pos = pos2 + 1;
- rlen = end - pos;
- wpa_hexdump_ascii_key(MSG_MSGDUMP,
- "EAP-GTC: Response password",
- pos, rlen);
- }
-#endif /* EAP_SERVER_FAST */
-
- if (sm->user == NULL || sm->user->password == NULL ||
- sm->user->password_hash) {
- wpa_printf(MSG_INFO, "EAP-GTC: Plaintext password not "
- "configured");
- data->state = FAILURE;
- return;
- }
-
- if (rlen != sm->user->password_len ||
- os_memcmp_const(pos, sm->user->password, rlen) != 0) {
- wpa_printf(MSG_DEBUG, "EAP-GTC: Done - Failure");
- data->state = FAILURE;
- } else {
- wpa_printf(MSG_DEBUG, "EAP-GTC: Done - Success");
- data->state = SUCCESS;
- }
-}
-
-
-static Boolean eap_gtc_isDone(struct eap_sm *sm, void *priv)
-{
- struct eap_gtc_data *data = priv;
- return data->state != CONTINUE;
-}
-
-
-static Boolean eap_gtc_isSuccess(struct eap_sm *sm, void *priv)
-{
- struct eap_gtc_data *data = priv;
- return data->state == SUCCESS;
-}
-
-
-int eap_server_gtc_register(void)
-{
- struct eap_method *eap;
-
- eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
- EAP_VENDOR_IETF, EAP_TYPE_GTC, "GTC");
- if (eap == NULL)
- return -1;
-
- eap->init = eap_gtc_init;
- eap->reset = eap_gtc_reset;
- eap->buildReq = eap_gtc_buildReq;
- eap->check = eap_gtc_check;
- eap->process = eap_gtc_process;
- eap->isDone = eap_gtc_isDone;
- eap->isSuccess = eap_gtc_isSuccess;
-
- return eap_server_method_register(eap);
-}
projects / mech_eap.git / blobdiff