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/*
* 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.
*/
/**
* @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_ @}*/
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