Stripped down import of hostapd v0.3.7

1 files changed, 174 insertions, 0 deletions

diff --git a/contrib/hostapd/eap_identity.c b/contrib/hostapd/eap_identity.c
new file mode 100644
index 0000000..31aedc4
--- /dev/null
+++ b/contrib/hostapd/eap_identity.c
@@ -0,0 +1,174 @@
+/*
+ * hostapd / EAP-Identity
+ * Copyright (c) 2004-2005, Jouni Malinen <jkmaline@cc.hut.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 <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <netinet/in.h>
+
+#include "hostapd.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 = malloc(sizeof(*data));
+	if (data == NULL)
+		return data;
+	memset(data, 0, sizeof(*data));
+	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;
+	free(data);
+}
+
+
+static u8 * eap_identity_buildReq(struct eap_sm *sm, void *priv, int id,
+			     size_t *reqDataLen)
+{
+	struct eap_identity_data *data = priv;
+	struct eap_hdr *req;
+	u8 *pos;
+
+	*reqDataLen = sizeof(*req) + 1;
+	req = malloc(*reqDataLen);
+	if (req == NULL) {
+		wpa_printf(MSG_ERROR, "EAP-Identity: Failed to allocate "
+			   "memory for request");
+		data->state = FAILURE;
+		return NULL;
+	}
+
+	req->code = EAP_CODE_REQUEST;
+	req->identifier = id;
+	req->length = htons(*reqDataLen);
+	pos = (u8 *) (req + 1);
+	*pos = EAP_TYPE_IDENTITY;
+
+	return (u8 *) req;
+}
+
+
+static Boolean eap_identity_check(struct eap_sm *sm, void *priv,
+			     u8 *respData, size_t respDataLen)
+{
+	struct eap_hdr *resp;
+	u8 *pos;
+	size_t len;
+
+	resp = (struct eap_hdr *) respData;
+	pos = (u8 *) (resp + 1);
+	if (respDataLen < sizeof(*resp) + 1 || *pos != EAP_TYPE_IDENTITY ||
+	    (len = ntohs(resp->length)) > respDataLen) {
+		wpa_printf(MSG_INFO, "EAP-Identity: Invalid frame");
+		return TRUE;
+	}
+
+	return FALSE;
+}
+
+
+static void eap_identity_process(struct eap_sm *sm, void *priv,
+			    u8 *respData, size_t respDataLen)
+{
+	struct eap_identity_data *data = priv;
+	struct eap_hdr *resp;
+	u8 *pos;
+	int len;
+
+	if (data->pick_up) {
+		if (eap_identity_check(sm, data, respData, respDataLen)) {
+			wpa_printf(MSG_DEBUG, "EAP-Identity: failed to pick "
+				   "up already started negotiation");
+			data->state = FAILURE;
+			return;
+		}
+		data->pick_up = 0;
+	}
+
+	resp = (struct eap_hdr *) respData;
+	len = ntohs(resp->length);
+	pos = (u8 *) (resp + 1);
+	pos++;
+	len -= sizeof(*resp) + 1;
+	if (len < 0) {
+		data->state = FAILURE;
+		return;
+	}
+	wpa_hexdump_ascii(MSG_DEBUG, "EAP-Identity: Peer identity", pos, len);
+	free(sm->identity);
+	sm->identity = malloc(len);
+	if (sm->identity == NULL) {
+		data->state = FAILURE;
+	} else {
+		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;
+}
+
+
+const struct eap_method eap_method_identity =
+{
+	.method = EAP_TYPE_IDENTITY,
+	.name = "Identity",
+	.init = eap_identity_init,
+	.initPickUp = eap_identity_initPickUp,
+	.reset = eap_identity_reset,
+	.buildReq = eap_identity_buildReq,
+	.check = eap_identity_check,
+	.process = eap_identity_process,
+	.isDone = eap_identity_isDone,
+	.isSuccess = eap_identity_isSuccess,
+};