1 /* 2 * RADIUS message processing 3 * Copyright (c) 2002-2009, 2012, 2014-2022, 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 be16 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_DISCONNECT_REQUEST = 40, 35 RADIUS_CODE_DISCONNECT_ACK = 41, 36 RADIUS_CODE_DISCONNECT_NAK = 42, 37 RADIUS_CODE_COA_REQUEST = 43, 38 RADIUS_CODE_COA_ACK = 44, 39 RADIUS_CODE_COA_NAK = 45, 40 RADIUS_CODE_RESERVED = 255 41 }; 42 43 struct 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 struct radius_attr_hdr_ext { 50 u8 type; 51 u8 length; /* including this header */ 52 u8 ext_type; 53 /* followed by length-3 octets of attribute value */ 54 } STRUCT_PACKED; 55 56 #define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr)) 57 #define RADIUS_MAX_EXT_ATTR_LEN (255 - sizeof(struct radius_attr_hdr_ext)) 58 59 enum { RADIUS_ATTR_USER_NAME = 1, 60 RADIUS_ATTR_USER_PASSWORD = 2, 61 RADIUS_ATTR_NAS_IP_ADDRESS = 4, 62 RADIUS_ATTR_NAS_PORT = 5, 63 RADIUS_ATTR_SERVICE_TYPE = 6, 64 RADIUS_ATTR_FRAMED_IP_ADDRESS = 8, 65 RADIUS_ATTR_FILTER_ID = 11, 66 RADIUS_ATTR_FRAMED_MTU = 12, 67 RADIUS_ATTR_REPLY_MESSAGE = 18, 68 RADIUS_ATTR_STATE = 24, 69 RADIUS_ATTR_CLASS = 25, 70 RADIUS_ATTR_VENDOR_SPECIFIC = 26, 71 RADIUS_ATTR_SESSION_TIMEOUT = 27, 72 RADIUS_ATTR_IDLE_TIMEOUT = 28, 73 RADIUS_ATTR_TERMINATION_ACTION = 29, 74 RADIUS_ATTR_CALLED_STATION_ID = 30, 75 RADIUS_ATTR_CALLING_STATION_ID = 31, 76 RADIUS_ATTR_NAS_IDENTIFIER = 32, 77 RADIUS_ATTR_PROXY_STATE = 33, 78 RADIUS_ATTR_ACCT_STATUS_TYPE = 40, 79 RADIUS_ATTR_ACCT_DELAY_TIME = 41, 80 RADIUS_ATTR_ACCT_INPUT_OCTETS = 42, 81 RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43, 82 RADIUS_ATTR_ACCT_SESSION_ID = 44, 83 RADIUS_ATTR_ACCT_AUTHENTIC = 45, 84 RADIUS_ATTR_ACCT_SESSION_TIME = 46, 85 RADIUS_ATTR_ACCT_INPUT_PACKETS = 47, 86 RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48, 87 RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49, 88 RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50, 89 RADIUS_ATTR_ACCT_LINK_COUNT = 51, 90 RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52, 91 RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53, 92 RADIUS_ATTR_EVENT_TIMESTAMP = 55, 93 RADIUS_ATTR_EGRESS_VLANID = 56, 94 RADIUS_ATTR_NAS_PORT_TYPE = 61, 95 RADIUS_ATTR_TUNNEL_TYPE = 64, 96 RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65, 97 RADIUS_ATTR_TUNNEL_PASSWORD = 69, 98 RADIUS_ATTR_CONNECT_INFO = 77, 99 RADIUS_ATTR_EAP_MESSAGE = 79, 100 RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80, 101 RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81, 102 RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85, 103 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89, 104 RADIUS_ATTR_NAS_IPV6_ADDRESS = 95, 105 RADIUS_ATTR_ERROR_CAUSE = 101, 106 RADIUS_ATTR_EAP_KEY_NAME = 102, 107 RADIUS_ATTR_OPERATOR_NAME = 126, 108 RADIUS_ATTR_LOCATION_INFO = 127, 109 RADIUS_ATTR_LOCATION_DATA = 128, 110 RADIUS_ATTR_BASIC_LOCATION_POLICY_RULES = 129, 111 RADIUS_ATTR_EXTENDED_LOCATION_POLICY_RULES = 130, 112 RADIUS_ATTR_LOCATION_CAPABLE = 131, 113 RADIUS_ATTR_REQUESTED_LOCATION_INFO = 132, 114 RADIUS_ATTR_GSS_ACCEPTOR_SERVICE_NAME = 164, 115 RADIUS_ATTR_GSS_ACCEPTOR_HOST_NAME = 165, 116 RADIUS_ATTR_GSS_ACCEPTOR_SERVICE_SPECIFICS = 166, 117 RADIUS_ATTR_GSS_ACCEPTOR_REALM_NAME = 167, 118 RADIUS_ATTR_MOBILITY_DOMAIN_ID = 177, 119 RADIUS_ATTR_WLAN_HESSID = 181, 120 RADIUS_ATTR_WLAN_REASON_CODE = 185, 121 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER = 186, 122 RADIUS_ATTR_WLAN_GROUP_CIPHER = 187, 123 RADIUS_ATTR_WLAN_AKM_SUITE = 188, 124 RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER = 189, 125 RADIUS_ATTR_EXT_TYPE_1 = 241, 126 RADIUS_ATTR_EXT_TYPE_2 = 242, 127 RADIUS_ATTR_EXT_TYPE_3 = 243, 128 RADIUS_ATTR_EXT_TYPE_4 = 244, 129 RADIUS_ATTR_LONG_EXT_TYPE_1 = 245, 130 RADIUS_ATTR_LONG_EXT_TYPE_2 = 246, 131 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_1 = (241 << 8) | 26, 132 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_2 = (242 << 8) | 26, 133 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_3 = (243 << 8) | 26, 134 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_4 = (244 << 8) | 26, 135 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_5 = (245 << 8) | 26, 136 RADIUS_ATTR_EXT_VENDOR_SPECIFIC_6 = (246 << 8) | 26, 137 }; 138 139 140 /* Service-Type values (RFC 2865, 5.6) */ 141 #define RADIUS_SERVICE_TYPE_FRAMED 2 142 143 /* Termination-Action */ 144 #define RADIUS_TERMINATION_ACTION_DEFAULT 0 145 #define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1 146 147 /* NAS-Port-Type */ 148 #define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19 149 150 /* Acct-Status-Type */ 151 #define RADIUS_ACCT_STATUS_TYPE_START 1 152 #define RADIUS_ACCT_STATUS_TYPE_STOP 2 153 #define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3 154 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7 155 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8 156 157 /* Acct-Authentic */ 158 #define RADIUS_ACCT_AUTHENTIC_RADIUS 1 159 #define RADIUS_ACCT_AUTHENTIC_LOCAL 2 160 #define RADIUS_ACCT_AUTHENTIC_REMOTE 3 161 162 /* Acct-Terminate-Cause */ 163 #define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1 164 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2 165 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3 166 #define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4 167 #define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5 168 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6 169 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7 170 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8 171 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9 172 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10 173 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11 174 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12 175 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13 176 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14 177 #define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15 178 #define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16 179 #define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17 180 #define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18 181 182 #define RADIUS_TUNNEL_TAGS 32 183 184 /* Tunnel-Type */ 185 #define RADIUS_TUNNEL_TYPE_PPTP 1 186 #define RADIUS_TUNNEL_TYPE_L2TP 3 187 #define RADIUS_TUNNEL_TYPE_IPIP 7 188 #define RADIUS_TUNNEL_TYPE_GRE 10 189 #define RADIUS_TUNNEL_TYPE_VLAN 13 190 191 /* Tunnel-Medium-Type */ 192 #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1 193 #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2 194 #define RADIUS_TUNNEL_MEDIUM_TYPE_802 6 195 196 197 struct radius_attr_vendor { 198 u8 vendor_type; 199 u8 vendor_length; 200 } STRUCT_PACKED; 201 202 #define RADIUS_VENDOR_ID_CISCO 9 203 #define RADIUS_CISCO_AV_PAIR 1 204 205 /* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */ 206 #define RADIUS_VENDOR_ID_MICROSOFT 311 207 208 enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16, 209 RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17 210 }; 211 212 /* FreeRADIUS vendor-specific attributes */ 213 #define RADIUS_VENDOR_ID_FREERADIUS 11344 214 /* Extended-Vendor-Specific-5 (245.26; long extended header) */ 215 enum { 216 RADIUS_VENDOR_ATTR_FREERADIUS_802_1X_ANONCE = 1, 217 RADIUS_VENDOR_ATTR_FREERADIUS_802_1X_EAPOL_KEY_MSG = 2, 218 }; 219 220 /* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */ 221 #define RADIUS_VENDOR_ID_WFA 40808 222 223 enum { 224 RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1, 225 RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2, 226 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3, 227 RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ = 4, 228 RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL = 5, 229 RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM = 6, 230 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME = 7, 231 RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP = 8, 232 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING = 9, 233 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL = 10, 234 }; 235 236 #ifdef _MSC_VER 237 #pragma pack(pop) 238 #endif /* _MSC_VER */ 239 240 struct radius_ms_mppe_keys { 241 u8 *send; 242 size_t send_len; 243 u8 *recv; 244 size_t recv_len; 245 }; 246 247 248 struct radius_msg; 249 250 /* Default size to be allocated for new RADIUS messages */ 251 #define RADIUS_DEFAULT_MSG_SIZE 1024 252 253 /* Default size to be allocated for attribute array */ 254 #define RADIUS_DEFAULT_ATTR_COUNT 16 255 256 /* Maximum message length for incoming RADIUS messages, as stated in RFC 2865 257 * Section 3 ("Packet Format").*/ 258 #define RADIUS_MAX_MSG_LEN 4096 259 260 /* MAC address ASCII format for IEEE 802.1X use 261 * (draft-congdon-radius-8021x-20.txt) */ 262 #define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X" 263 /* MAC address ASCII format for non-802.1X use */ 264 #define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x" 265 266 struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); 267 struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); 268 struct radius_msg * radius_msg_new(u8 code, u8 identifier); 269 void radius_msg_free(struct radius_msg *msg); 270 void radius_msg_dump(struct radius_msg *msg); 271 u8 * radius_msg_add_msg_auth(struct radius_msg *msg); 272 int radius_msg_finish(struct radius_msg *msg, const u8 *secret, 273 size_t secret_len); 274 int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, 275 size_t secret_len, const u8 *req_authenticator); 276 int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret, 277 size_t secret_len, 278 const struct radius_hdr *req_hdr); 279 void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, 280 size_t secret_len); 281 void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret, 282 size_t secret_len, 283 const u8 *req_authenticator); 284 int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret, 285 size_t secret_len); 286 int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret, 287 size_t secret_len, 288 int require_message_authenticator); 289 struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u16 type, 290 const u8 *data, size_t data_len); 291 struct radius_msg * radius_msg_parse(const u8 *data, size_t len); 292 int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, 293 size_t data_len); 294 struct wpabuf * radius_msg_get_eap(struct radius_msg *msg); 295 int radius_msg_verify(struct radius_msg *msg, const u8 *secret, 296 size_t secret_len, struct radius_msg *sent_msg, 297 int auth); 298 int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, 299 size_t secret_len, const u8 *req_auth); 300 int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, 301 u8 type); 302 int radius_msg_make_authenticator(struct radius_msg *msg); 303 struct radius_ms_mppe_keys * 304 radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 305 const u8 *secret, size_t secret_len); 306 struct radius_ms_mppe_keys * 307 radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 308 const u8 *secret, size_t secret_len); 309 int radius_msg_add_mppe_keys(struct radius_msg *msg, 310 const u8 *req_authenticator, 311 const u8 *secret, size_t secret_len, 312 const u8 *send_key, size_t send_key_len, 313 const u8 *recv_key, size_t recv_key_len); 314 int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data, 315 size_t len); 316 int radius_msg_add_ext_vs(struct radius_msg *msg, u16 type, u32 vendor_id, 317 u8 vendor_type, const u8 *data, size_t len); 318 int radius_user_password_hide(struct radius_msg *msg, 319 const u8 *data, size_t data_len, 320 const u8 *secret, size_t secret_len, 321 u8 *buf, size_t buf_len); 322 struct radius_attr_hdr * 323 radius_msg_add_attr_user_password(struct radius_msg *msg, 324 const u8 *data, size_t data_len, 325 const u8 *secret, size_t secret_len); 326 int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); 327 int radius_msg_get_vlanid(struct radius_msg *msg, int *untagged, int numtagged, 328 int *tagged); 329 char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen, 330 const u8 *secret, size_t secret_len, 331 struct radius_msg *sent_msg, size_t n); 332 333 static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, 334 u32 value) 335 { 336 u32 val = htonl(value); 337 return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; 338 } 339 340 static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, 341 u32 *value) 342 { 343 u32 val; 344 int res; 345 res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); 346 if (res != 4) 347 return -1; 348 349 *value = ntohl(val); 350 return 0; 351 } 352 int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, 353 size_t *len, const u8 *start); 354 int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); 355 356 357 struct radius_attr_data { 358 u8 *data; 359 size_t len; 360 }; 361 362 struct radius_class_data { 363 struct radius_attr_data *attr; 364 size_t count; 365 }; 366 367 void radius_free_class(struct radius_class_data *c); 368 int radius_copy_class(struct radius_class_data *dst, 369 const struct radius_class_data *src); 370 371 u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs); 372 373 int radius_gen_session_id(u8 *id, size_t len); 374 375 #endif /* RADIUS_H */ 376
Indexes created Mon Jun 22 00:25:11 UTC 2026