1 files changed, 278 insertions, 0 deletions
diff --git a/src/charon/plugins/eap_radius/radius_message.h b/src/charon/plugins/eap_radius/radius_message.h
new file mode 100644
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--- /dev/null
+++ b/src/charon/plugins/eap_radius/radius_message.h
@@ -0,0 +1,278 @@
+/*
+ * Copyright (C) 2009 Martin Willi
+ * Hochschule fuer Technik Rapperswil
+ *
+ * This program is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License as published by the
+ * Free Software Foundation; either version 2 of the License, or (at your
+ * option) any later version.  See <http://www.fsf.org/copyleft/gpl.txt>.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY
+ * or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * for more details.
+ *
+ * $Id$
+ */
+
+/**
+ * @defgroup radius_message radius_message
+ * @{ @ingroup eap_radius
+ */
+
+#ifndef RADIUS_MESSAGE_H_
+#define RADIUS_MESSAGE_H_
+
+#include <library.h>
+
+typedef struct radius_message_t radius_message_t;
+typedef enum radius_message_code_t radius_message_code_t;
+typedef enum radius_attribute_type_t radius_attribute_type_t;
+
+/**
+ * RADIUS Message Codes.
+ */
+enum radius_message_code_t {
+	RMC_ACCESS_REQUEST = 1,
+	RMC_ACCESS_ACCEPT = 2,
+	RMC_ACCESS_REJECT = 3,
+	RMC_ACCOUNTING_REQUEST = 4,
+	RMC_ACCOUNTING_RESPONSE = 5,
+	RMC_ACCESS_CHALLENGE = 11,
+};
+
+/**
+ * Enum names for radius_attribute_type_t.
+ */
+extern enum_name_t *radius_message_code_names;
+
+/**
+ * RADIUS Attribute Types.
+ */
+enum radius_attribute_type_t {
+	RAT_USER_NAME = 1,
+	RAT_USER_PASSWORD = 2,
+	RAT_CHAP_PASSWORD = 3,
+	RAT_NAS_IP_ADDRESS = 4,
+	RAT_NAS_PORT = 5,
+	RAT_SERVICE_TYPE = 6,
+	RAT_FRAMED_PROTOCOL = 7,
+	RAT_FRAMED_IP_ADDRESS = 8,
+	RAT_FRAMED_IP_NETMASK = 9,
+	RAT_FRAMED_ROUTING = 10,
+	RAT_FILTER_ID = 11,
+	RAT_FRAMED_MTU = 12,
+	RAT_FRAMED_COMPRESSION = 13,
+	RAT_LOGIN_IP_HOST = 14,
+	RAT_LOGIN_SERVICE = 15,
+	RAT_LOGIN_TCP_PORT = 16,
+	RAT_REPLY_MESSAGE = 18,
+	RAT_CALLBACK_NUMBER = 19,
+	RAT_CALLBACK_ID = 20,
+	RAT_FRAMED_ROUTE = 22,
+	RAT_FRAMED_IPX_NETWORK = 23,
+	RAT_STATE = 24,
+	RAT_CLASS = 25,
+	RAT_VENDOR_SPECIFIC = 26,
+	RAT_SESSION_TIMEOUT = 27,
+	RAT_IDLE_TIMEOUT = 28,
+	RAT_TERMINATION_ACTION = 29,
+	RAT_CALLED_STATION_ID = 30,
+	RAT_CALLING_STATION_ID = 31,
+	RAT_NAS_IDENTIFIER = 32,
+	RAT_PROXY_STATE = 33,
+	RAT_LOGIN_LAT_SERVICE = 34,
+	RAT_LOGIN_LAT_NODE = 35,
+	RAT_LOGIN_LAT_GROUP = 36,
+	RAT_FRAMED_APPLETALK_LINK = 37,
+	RAT_FRAMED_APPLETALK_NETWORK = 38,
+	RAT_FRAMED_APPLETALK_ZONE = 39,
+	RAT_ACCT_STATUS_TYPE = 40,
+	RAT_ACCT_DELAY_TIME = 41,
+	RAT_ACCT_INPUT_OCTETS = 42,
+	RAT_ACCT_OUTPUT_OCTETS = 43,
+	RAT_ACCT_SESSION_ID = 44,
+	RAT_ACCT_AUTHENTIC = 45,
+	RAT_ACCT_SESSION_TIME = 46,
+	RAT_ACCT_INPUT_PACKETS = 47,
+	RAT_ACCT_OUTPUT_PACKETS = 48,
+	RAT_ACCT_TERMINATE_CAUSE = 49,
+	RAT_ACCT_MULTI_SESSION_ID = 50,
+	RAT_ACCT_LINK_COUNT = 51,
+	RAT_ACCT_INPUT_GIGAWORDS = 52,
+	RAT_ACCT_OUTPUT_GIGAWORDS = 53,
+	RAT_EVENT_TIMESTAMP = 55,
+	RAT_EGRESS_VLANID = 56,
+	RAT_INGRESS_FILTERS = 57,
+	RAT_EGRESS_VLAN_NAME = 58,
+	RAT_USER_PRIORITY_TABLE = 59,
+	RAT_CHAP_CHALLENGE = 60,
+	RAT_NAS_PORT_TYPE = 61,
+	RAT_PORT_LIMIT = 62,
+	RAT_LOGIN_LAT_PORT = 63,
+	RAT_TUNNEL_TYPE = 64,
+	RAT_TUNNEL_MEDIUM_TYPE = 65,
+	RAT_TUNNEL_CLIENT_ENDPOINT = 66,
+	RAT_TUNNEL_SERVER_ENDPOINT = 67,
+	RAT_ACCT_TUNNEL_CONNECTION = 68,
+	RAT_TUNNEL_PASSWORD = 69,
+	RAT_ARAP_PASSWORD = 70,
+	RAT_ARAP_FEATURES = 71,
+	RAT_ARAP_ZONE_ACCESS = 72,
+	RAT_ARAP_SECURITY = 73,
+	RAT_ARAP_SECURITY_DATA = 74,
+	RAT_PASSWORD_RETRY = 75,
+	RAT_PROMPT = 76,
+	RAT_CONNECT_INFO = 77,
+	RAT_CONFIGURATION_TOKEN = 78,
+	RAT_EAP_MESSAGE = 79,
+	RAT_MESSAGE_AUTHENTICATOR = 80,
+	RAT_TUNNEL_PRIVATE_GROUP_ID = 81,
+	RAT_TUNNEL_ASSIGNMENT_ID = 82,
+	RAT_TUNNEL_PREFERENCE = 83,
+	RAT_ARAP_CHALLENGE_RESPONSE = 84,
+	RAT_ACCT_INTERIM_INTERVAL = 85,
+	RAT_ACCT_TUNNEL_PACKETS_LOST = 86,
+	RAT_NAS_PORT_ID = 87,
+	RAT_FRAMED_POOL = 88,
+	RAT_CUI = 89,
+	RAT_TUNNEL_CLIENT_AUTH_ID = 90,
+	RAT_TUNNEL_SERVER_AUTH_ID = 91,
+	RAT_NAS_FILTER_RULE = 92,
+	RAT_UNASSIGNED = 93,
+	RAT_ORIGINATING_LINE_INFO = 94,
+	RAT_NAS_IPV6_ADDRESS = 95,
+	RAT_FRAMED_INTERFACE_ID = 96,
+	RAT_FRAMED_IPV6_PREFIX = 97,
+	RAT_LOGIN_IPV6_HOST = 98,
+	RAT_FRAMED_IPV6_ROUTE = 99,
+	RAT_FRAMED_IPV6_POOL = 100,
+	RAT_ERROR_CAUSE = 101,
+	RAT_EAP_KEY_NAME = 102,
+	RAT_DIGEST_RESPONSE = 103,
+	RAT_DIGEST_REALM = 104,
+	RAT_DIGEST_NONCE = 105,
+	RAT_DIGEST_RESPONSE_AUTH = 106,
+	RAT_DIGEST_NEXTNONCE = 107,
+	RAT_DIGEST_METHOD = 108,
+	RAT_DIGEST_URI = 109,
+	RAT_DIGEST_QOP = 110,
+	RAT_DIGEST_ALGORITHM = 111,
+	RAT_DIGEST_ENTITY_BODY_HASH = 112,
+	RAT_DIGEST_CNONCE = 113,
+	RAT_DIGEST_NONCE_COUNT = 114,
+	RAT_DIGEST_USERNAME = 115,
+	RAT_DIGEST_OPAQUE = 116,
+	RAT_DIGEST_AUTH_PARAM = 117,
+	RAT_DIGEST_AKA_AUTS = 118,
+	RAT_DIGEST_DOMAIN = 119,
+	RAT_DIGEST_STALE = 120,
+	RAT_DIGEST_HA1 = 121,
+	RAT_SIP_AOR = 122,
+	RAT_DELEGATED_IPV6_PREFIX = 123,
+	RAT_MIP6_FEATURE_VECTOR = 124,
+	RAT_MIP6_HOME_LINK_PREFIX = 125,
+};
+
+/**
+ * Enum names for radius_attribute_type_t.
+ */
+extern enum_name_t *radius_attribute_type_names;
+
+/**
+ * A RADIUS message, contains attributes.
+ */
+struct radius_message_t {
+	
+	/**
+	 * Create an enumerator over contained RADIUS attributes.
+	 *
+	 * @return				enumerator over (int type, chunk_t data)
+	 */
+	enumerator_t* (*create_enumerator)(radius_message_t *this);
+	
+	/**
+	 * Add a RADIUS attribute to the message.
+	 *
+	 * @param type			type of attribute to add
+	 * @param				attribute data, gets cloned
+	 */
+	void (*add)(radius_message_t *this, radius_attribute_type_t type,
+				chunk_t data);
+	
+	/**
+	 * Get the message type (code).
+	 *
+	 * @return				message code
+	 */
+	radius_message_code_t (*get_code)(radius_message_t *this);
+	
+	/**
+	 * Get the message identifier.
+	 *
+	 * @return				message identifier
+	 */
+	u_int8_t (*get_identifier)(radius_message_t *this);
+	
+	/**
+	 * Set the message identifier.
+	 *
+	 * @param identifier	message identifier
+	 */
+	void (*set_identifier)(radius_message_t *this, u_int8_t identifier);
+	
+	/**
+	 * Get the 16 byte authenticator.
+	 *
+	 * @return				pointer to the Authenticator field
+	 */
+	u_int8_t* (*get_authenticator)(radius_message_t *this);
+	
+	/**
+	 * Get the RADIUS message in its encoded form.
+	 *
+	 * @return				chunk pointing to internal RADIUS message.
+	 */
+	chunk_t (*get_encoding)(radius_message_t *this);
+	
+	/**
+	 * Calculate and add the Message-Authenticator attribute to the message.
+	 *
+	 * @param rng			RNG to create Request-Authenticator
+	 * @param signer		HMAC-MD5 signer with secret set
+	 */
+	void (*sign)(radius_message_t *this, rng_t *rng, signer_t *signer);
+	
+	/**
+	 * Verify the integrity of a received RADIUS response.
+	 *
+	 * @param req_auth		16 byte Authenticator of the corresponding request
+	 * @param secret		shared RADIUS secret
+	 * @param hasher		hasher to verify Response-Authenticator
+	 * @param signer		signer to verify Message-Authenticator attribute
+	 */
+	bool (*verify)(radius_message_t *this, u_int8_t *req_auth, chunk_t secret,
+				   hasher_t *hasher, signer_t *signer);
+	
+	/**
+	 * Destroy the message.
+	 */
+	void (*destroy)(radius_message_t *this);
+};
+
+/**
+ * Create an empty RADIUS request message (RMT_ACCESS_REQUEST).
+ *
+ * @return				radius_message_t object
+ */
+radius_message_t *radius_message_create_request();
+
+/**
+ * Parse and verify a recevied RADIUS response.
+ *
+ * @param data			received message data
+ * @return				radius_message_t object, NULL if length invalid
+ */
+radius_message_t *radius_message_parse_response(chunk_t data);
+
+#endif /** RADIUS_MESSAGE_H_ @}*/