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-rw-r--r--src/eap_server/eap_server_identity.c180
1 files changed, 180 insertions, 0 deletions
diff --git a/src/eap_server/eap_server_identity.c b/src/eap_server/eap_server_identity.c
new file mode 100644
index 0000000..cd8da2a
--- /dev/null
+++ b/src/eap_server/eap_server_identity.c
@@ -0,0 +1,180 @@
+/*
+ * hostapd / EAP-Identity
+ * Copyright (c) 2004-2006, 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 "eap_i.h"
+
+
+struct eap_identity_data {
+ enum { CONTINUE, SUCCESS, FAILURE } state;
+ int pick_up;
+};
+
+
+static void * eap_identity_init(struct eap_sm *sm)
+{
+ struct eap_identity_data *data;
+
+ data = os_zalloc(sizeof(*data));
+ if (data == NULL)
+ return NULL;
+ data->state = CONTINUE;
+
+ return data;
+}
+
+
+static void * eap_identity_initPickUp(struct eap_sm *sm)
+{
+ struct eap_identity_data *data;
+ data = eap_identity_init(sm);
+ if (data) {
+ data->pick_up = 1;
+ }
+ return data;
+}
+
+
+static void eap_identity_reset(struct eap_sm *sm, void *priv)
+{
+ struct eap_identity_data *data = priv;
+ os_free(data);
+}
+
+
+static struct wpabuf * eap_identity_buildReq(struct eap_sm *sm, void *priv,
+ u8 id)
+{
+ struct eap_identity_data *data = priv;
+ struct wpabuf *req;
+ const char *req_data;
+ size_t req_data_len;
+
+ if (sm->eapol_cb->get_eap_req_id_text) {
+ req_data = sm->eapol_cb->get_eap_req_id_text(sm->eapol_ctx,
+ &req_data_len);
+ } else {
+ req_data = NULL;
+ req_data_len = 0;
+ }
+ req = eap_msg_alloc(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY, req_data_len,
+ EAP_CODE_REQUEST, id);
+ if (req == NULL) {
+ wpa_printf(MSG_ERROR, "EAP-Identity: Failed to allocate "
+ "memory for request");
+ data->state = FAILURE;
+ return NULL;
+ }
+
+ wpabuf_put_data(req, req_data, req_data_len);
+
+ return req;
+}
+
+
+static Boolean eap_identity_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_IDENTITY,
+ respData, &len);
+ if (pos == NULL) {
+ wpa_printf(MSG_INFO, "EAP-Identity: Invalid frame");
+ return TRUE;
+ }
+
+ return FALSE;
+}
+
+
+static void eap_identity_process(struct eap_sm *sm, void *priv,
+ struct wpabuf *respData)
+{
+ struct eap_identity_data *data = priv;
+ const u8 *pos;
+ size_t len;
+
+ if (data->pick_up) {
+ if (eap_identity_check(sm, data, respData)) {
+ wpa_printf(MSG_DEBUG, "EAP-Identity: failed to pick "
+ "up already started negotiation");
+ data->state = FAILURE;
+ return;
+ }
+ data->pick_up = 0;
+ }
+
+ pos = eap_hdr_validate(EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+ respData, &len);
+ if (pos == NULL)
+ return; /* Should not happen - frame already validated */
+
+ wpa_hexdump_ascii(MSG_DEBUG, "EAP-Identity: Peer identity", pos, len);
+ if (sm->identity)
+ sm->update_user = TRUE;
+ os_free(sm->identity);
+ sm->identity = os_malloc(len ? len : 1);
+ if (sm->identity == NULL) {
+ data->state = FAILURE;
+ } else {
+ os_memcpy(sm->identity, pos, len);
+ sm->identity_len = len;
+ data->state = SUCCESS;
+ }
+}
+
+
+static Boolean eap_identity_isDone(struct eap_sm *sm, void *priv)
+{
+ struct eap_identity_data *data = priv;
+ return data->state != CONTINUE;
+}
+
+
+static Boolean eap_identity_isSuccess(struct eap_sm *sm, void *priv)
+{
+ struct eap_identity_data *data = priv;
+ return data->state == SUCCESS;
+}
+
+
+int eap_server_identity_register(void)
+{
+ struct eap_method *eap;
+ int ret;
+
+ eap = eap_server_method_alloc(EAP_SERVER_METHOD_INTERFACE_VERSION,
+ EAP_VENDOR_IETF, EAP_TYPE_IDENTITY,
+ "Identity");
+ if (eap == NULL)
+ return -1;
+
+ eap->init = eap_identity_init;
+ eap->initPickUp = eap_identity_initPickUp;
+ eap->reset = eap_identity_reset;
+ eap->buildReq = eap_identity_buildReq;
+ eap->check = eap_identity_check;
+ eap->process = eap_identity_process;
+ eap->isDone = eap_identity_isDone;
+ eap->isSuccess = eap_identity_isSuccess;
+
+ ret = eap_server_method_register(eap);
+ if (ret)
+ eap_server_method_free(eap);
+ return ret;
+}