1/* 2 * RADIUS message processing 3 * Copyright (c) 2002-2009, Jouni Malinen <j@w1.fi> 4 * 5 * This program is free software; you can redistribute it and/or modify 6 * it under the terms of the GNU General Public License version 2 as 7 * published by the Free Software Foundation. 8 * 9 * Alternatively, this software may be distributed under the terms of BSD 10 * license. 11 * 12 * See README and COPYING for more details. 13 */ 14 15#ifndef RADIUS_H 16#define RADIUS_H 17 18/* RFC 2865 - RADIUS */ 19 20#ifdef _MSC_VER 21#pragma pack(push, 1) 22#endif /* _MSC_VER */ 23 24struct radius_hdr { 25 u8 code; 26 u8 identifier; 27 u16 length; /* including this header */ 28 u8 authenticator[16]; 29 /* followed by length-20 octets of attributes */ 30} STRUCT_PACKED; 31 32enum { RADIUS_CODE_ACCESS_REQUEST = 1, 33 RADIUS_CODE_ACCESS_ACCEPT = 2, 34 RADIUS_CODE_ACCESS_REJECT = 3, 35 RADIUS_CODE_ACCOUNTING_REQUEST = 4, 36 RADIUS_CODE_ACCOUNTING_RESPONSE = 5, 37 RADIUS_CODE_ACCESS_CHALLENGE = 11, 38 RADIUS_CODE_STATUS_SERVER = 12, 39 RADIUS_CODE_STATUS_CLIENT = 13, 40 RADIUS_CODE_RESERVED = 255 41}; 42 43struct radius_attr_hdr { 44 u8 type; 45 u8 length; /* including this header */ 46 /* followed by length-2 octets of attribute value */ 47} STRUCT_PACKED; 48 49#define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr)) 50 51enum { RADIUS_ATTR_USER_NAME = 1, 52 RADIUS_ATTR_USER_PASSWORD = 2, 53 RADIUS_ATTR_NAS_IP_ADDRESS = 4, 54 RADIUS_ATTR_NAS_PORT = 5, 55 RADIUS_ATTR_FRAMED_MTU = 12, 56 RADIUS_ATTR_REPLY_MESSAGE = 18, 57 RADIUS_ATTR_STATE = 24, 58 RADIUS_ATTR_CLASS = 25, 59 RADIUS_ATTR_VENDOR_SPECIFIC = 26, 60 RADIUS_ATTR_SESSION_TIMEOUT = 27, 61 RADIUS_ATTR_IDLE_TIMEOUT = 28, 62 RADIUS_ATTR_TERMINATION_ACTION = 29, 63 RADIUS_ATTR_CALLED_STATION_ID = 30, 64 RADIUS_ATTR_CALLING_STATION_ID = 31, 65 RADIUS_ATTR_NAS_IDENTIFIER = 32, 66 RADIUS_ATTR_PROXY_STATE = 33, 67 RADIUS_ATTR_ACCT_STATUS_TYPE = 40, 68 RADIUS_ATTR_ACCT_DELAY_TIME = 41, 69 RADIUS_ATTR_ACCT_INPUT_OCTETS = 42, 70 RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43, 71 RADIUS_ATTR_ACCT_SESSION_ID = 44, 72 RADIUS_ATTR_ACCT_AUTHENTIC = 45, 73 RADIUS_ATTR_ACCT_SESSION_TIME = 46, 74 RADIUS_ATTR_ACCT_INPUT_PACKETS = 47, 75 RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48, 76 RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49, 77 RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50, 78 RADIUS_ATTR_ACCT_LINK_COUNT = 51, 79 RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52, 80 RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53, 81 RADIUS_ATTR_EVENT_TIMESTAMP = 55, 82 RADIUS_ATTR_NAS_PORT_TYPE = 61, 83 RADIUS_ATTR_TUNNEL_TYPE = 64, 84 RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65, 85 RADIUS_ATTR_CONNECT_INFO = 77, 86 RADIUS_ATTR_EAP_MESSAGE = 79, 87 RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80, 88 RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81, 89 RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85, 90 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89, 91 RADIUS_ATTR_NAS_IPV6_ADDRESS = 95 92}; 93 94 95/* Termination-Action */ 96#define RADIUS_TERMINATION_ACTION_DEFAULT 0 97#define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1 98 99/* NAS-Port-Type */ 100#define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19 101 102/* Acct-Status-Type */ 103#define RADIUS_ACCT_STATUS_TYPE_START 1 104#define RADIUS_ACCT_STATUS_TYPE_STOP 2 105#define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3 106#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7 107#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8 108 109/* Acct-Authentic */ 110#define RADIUS_ACCT_AUTHENTIC_RADIUS 1 111#define RADIUS_ACCT_AUTHENTIC_LOCAL 2 112#define RADIUS_ACCT_AUTHENTIC_REMOTE 3 113 114/* Acct-Terminate-Cause */ 115#define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1 116#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2 117#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3 118#define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4 119#define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5 120#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6 121#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7 122#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8 123#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9 124#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10 125#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11 126#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12 127#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13 128#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14 129#define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15 130#define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16 131#define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17 132#define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18 133 134#define RADIUS_TUNNEL_TAGS 32 135 136/* Tunnel-Type */ 137#define RADIUS_TUNNEL_TYPE_PPTP 1 138#define RADIUS_TUNNEL_TYPE_L2TP 3 139#define RADIUS_TUNNEL_TYPE_IPIP 7 140#define RADIUS_TUNNEL_TYPE_GRE 10 141#define RADIUS_TUNNEL_TYPE_VLAN 13 142 143/* Tunnel-Medium-Type */ 144#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1 145#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2 146#define RADIUS_TUNNEL_MEDIUM_TYPE_802 6 147 148 149struct radius_attr_vendor { 150 u8 vendor_type; 151 u8 vendor_length; 152} STRUCT_PACKED; 153 154#define RADIUS_VENDOR_ID_CISCO 9 155#define RADIUS_CISCO_AV_PAIR 1 156 157/* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */ 158#define RADIUS_VENDOR_ID_MICROSOFT 311 159 160enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16, 161 RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17 162}; 163 164#ifdef _MSC_VER 165#pragma pack(pop) 166#endif /* _MSC_VER */ 167 168struct radius_ms_mppe_keys { 169 u8 *send; 170 size_t send_len; 171 u8 *recv; 172 size_t recv_len; 173}; 174 175 176struct radius_msg; 177 178/* Default size to be allocated for new RADIUS messages */ 179#define RADIUS_DEFAULT_MSG_SIZE 1024 180 181/* Default size to be allocated for attribute array */ 182#define RADIUS_DEFAULT_ATTR_COUNT 16 183 184 185/* MAC address ASCII format for IEEE 802.1X use 186 * (draft-congdon-radius-8021x-20.txt) */ 187#define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X" 188/* MAC address ASCII format for non-802.1X use */ 189#define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x" 190 191struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); 192struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); 193struct radius_msg * radius_msg_new(u8 code, u8 identifier); 194void radius_msg_free(struct radius_msg *msg); 195void radius_msg_dump(struct radius_msg *msg); 196int radius_msg_finish(struct radius_msg *msg, const u8 *secret, 197 size_t secret_len); 198int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, 199 size_t secret_len, const u8 *req_authenticator); 200void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, 201 size_t secret_len); 202struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type, 203 const u8 *data, size_t data_len); 204struct radius_msg * radius_msg_parse(const u8 *data, size_t len); 205int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, 206 size_t data_len); 207u8 *radius_msg_get_eap(struct radius_msg *msg, size_t *len); 208int radius_msg_verify(struct radius_msg *msg, const u8 *secret, 209 size_t secret_len, struct radius_msg *sent_msg, 210 int auth); 211int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, 212 size_t secret_len, const u8 *req_auth); 213int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, 214 u8 type); 215void radius_msg_make_authenticator(struct radius_msg *msg, 216 const u8 *data, size_t len); 217struct radius_ms_mppe_keys * 218radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 219 const u8 *secret, size_t secret_len); 220struct radius_ms_mppe_keys * 221radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 222 const u8 *secret, size_t secret_len); 223int radius_msg_add_mppe_keys(struct radius_msg *msg, 224 const u8 *req_authenticator, 225 const u8 *secret, size_t secret_len, 226 const u8 *send_key, size_t send_key_len, 227 const u8 *recv_key, size_t recv_key_len); 228struct radius_attr_hdr * 229radius_msg_add_attr_user_password(struct radius_msg *msg, 230 const u8 *data, size_t data_len, 231 const u8 *secret, size_t secret_len); 232int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); 233int radius_msg_get_vlanid(struct radius_msg *msg); 234 235static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, 236 u32 value) 237{ 238 u32 val = htonl(value); 239 return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; 240} 241 242static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, 243 u32 *value) 244{ 245 u32 val; 246 int res; 247 res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); 248 if (res != 4) 249 return -1; 250 251 *value = ntohl(val); 252 return 0; 253} 254int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, 255 size_t *len, const u8 *start); 256int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); 257 258 259struct radius_attr_data { 260 u8 *data; 261 size_t len; 262}; 263 264struct radius_class_data { 265 struct radius_attr_data *attr; 266 size_t count; 267}; 268 269void radius_free_class(struct radius_class_data *c); 270int radius_copy_class(struct radius_class_data *dst, 271 const struct radius_class_data *src); 272 273#endif /* RADIUS_H */ 274