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