1 /* 2 * RADIUS message processing 3 * Copyright (c) 2002-2009, 2012, 2014-2015, 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 #define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr)) 50 51 enum { 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_SERVICE_TYPE = 6, 56 RADIUS_ATTR_FRAMED_IP_ADDRESS = 8, 57 RADIUS_ATTR_FRAMED_MTU = 12, 58 RADIUS_ATTR_REPLY_MESSAGE = 18, 59 RADIUS_ATTR_STATE = 24, 60 RADIUS_ATTR_CLASS = 25, 61 RADIUS_ATTR_VENDOR_SPECIFIC = 26, 62 RADIUS_ATTR_SESSION_TIMEOUT = 27, 63 RADIUS_ATTR_IDLE_TIMEOUT = 28, 64 RADIUS_ATTR_TERMINATION_ACTION = 29, 65 RADIUS_ATTR_CALLED_STATION_ID = 30, 66 RADIUS_ATTR_CALLING_STATION_ID = 31, 67 RADIUS_ATTR_NAS_IDENTIFIER = 32, 68 RADIUS_ATTR_PROXY_STATE = 33, 69 RADIUS_ATTR_ACCT_STATUS_TYPE = 40, 70 RADIUS_ATTR_ACCT_DELAY_TIME = 41, 71 RADIUS_ATTR_ACCT_INPUT_OCTETS = 42, 72 RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43, 73 RADIUS_ATTR_ACCT_SESSION_ID = 44, 74 RADIUS_ATTR_ACCT_AUTHENTIC = 45, 75 RADIUS_ATTR_ACCT_SESSION_TIME = 46, 76 RADIUS_ATTR_ACCT_INPUT_PACKETS = 47, 77 RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48, 78 RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49, 79 RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50, 80 RADIUS_ATTR_ACCT_LINK_COUNT = 51, 81 RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52, 82 RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53, 83 RADIUS_ATTR_EVENT_TIMESTAMP = 55, 84 RADIUS_ATTR_EGRESS_VLANID = 56, 85 RADIUS_ATTR_NAS_PORT_TYPE = 61, 86 RADIUS_ATTR_TUNNEL_TYPE = 64, 87 RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65, 88 RADIUS_ATTR_TUNNEL_PASSWORD = 69, 89 RADIUS_ATTR_CONNECT_INFO = 77, 90 RADIUS_ATTR_EAP_MESSAGE = 79, 91 RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80, 92 RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81, 93 RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85, 94 RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89, 95 RADIUS_ATTR_NAS_IPV6_ADDRESS = 95, 96 RADIUS_ATTR_ERROR_CAUSE = 101, 97 RADIUS_ATTR_EAP_KEY_NAME = 102, 98 RADIUS_ATTR_OPERATOR_NAME = 126, 99 RADIUS_ATTR_LOCATION_INFO = 127, 100 RADIUS_ATTR_LOCATION_DATA = 128, 101 RADIUS_ATTR_BASIC_LOCATION_POLICY_RULES = 129, 102 RADIUS_ATTR_EXTENDED_LOCATION_POLICY_RULES = 130, 103 RADIUS_ATTR_LOCATION_CAPABLE = 131, 104 RADIUS_ATTR_REQUESTED_LOCATION_INFO = 132, 105 RADIUS_ATTR_MOBILITY_DOMAIN_ID = 177, 106 RADIUS_ATTR_WLAN_HESSID = 181, 107 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER = 186, 108 RADIUS_ATTR_WLAN_GROUP_CIPHER = 187, 109 RADIUS_ATTR_WLAN_AKM_SUITE = 188, 110 RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER = 189, 111 }; 112 113 114 /* Service-Type values (RFC 2865, 5.6) */ 115 #define RADIUS_SERVICE_TYPE_FRAMED 2 116 117 /* Termination-Action */ 118 #define RADIUS_TERMINATION_ACTION_DEFAULT 0 119 #define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1 120 121 /* NAS-Port-Type */ 122 #define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19 123 124 /* Acct-Status-Type */ 125 #define RADIUS_ACCT_STATUS_TYPE_START 1 126 #define RADIUS_ACCT_STATUS_TYPE_STOP 2 127 #define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3 128 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7 129 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8 130 131 /* Acct-Authentic */ 132 #define RADIUS_ACCT_AUTHENTIC_RADIUS 1 133 #define RADIUS_ACCT_AUTHENTIC_LOCAL 2 134 #define RADIUS_ACCT_AUTHENTIC_REMOTE 3 135 136 /* Acct-Terminate-Cause */ 137 #define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1 138 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2 139 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3 140 #define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4 141 #define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5 142 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6 143 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7 144 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8 145 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9 146 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10 147 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11 148 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12 149 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13 150 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14 151 #define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15 152 #define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16 153 #define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17 154 #define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18 155 156 #define RADIUS_TUNNEL_TAGS 32 157 158 /* Tunnel-Type */ 159 #define RADIUS_TUNNEL_TYPE_PPTP 1 160 #define RADIUS_TUNNEL_TYPE_L2TP 3 161 #define RADIUS_TUNNEL_TYPE_IPIP 7 162 #define RADIUS_TUNNEL_TYPE_GRE 10 163 #define RADIUS_TUNNEL_TYPE_VLAN 13 164 165 /* Tunnel-Medium-Type */ 166 #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1 167 #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2 168 #define RADIUS_TUNNEL_MEDIUM_TYPE_802 6 169 170 171 struct radius_attr_vendor { 172 u8 vendor_type; 173 u8 vendor_length; 174 } STRUCT_PACKED; 175 176 #define RADIUS_VENDOR_ID_CISCO 9 177 #define RADIUS_CISCO_AV_PAIR 1 178 179 /* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */ 180 #define RADIUS_VENDOR_ID_MICROSOFT 311 181 182 enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16, 183 RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17 184 }; 185 186 187 /* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */ 188 #define RADIUS_VENDOR_ID_WFA 40808 189 190 enum { 191 RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1, 192 RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2, 193 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3, 194 RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ = 4, 195 RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL = 5, 196 }; 197 198 #ifdef _MSC_VER 199 #pragma pack(pop) 200 #endif /* _MSC_VER */ 201 202 struct radius_ms_mppe_keys { 203 u8 *send; 204 size_t send_len; 205 u8 *recv; 206 size_t recv_len; 207 }; 208 209 210 struct radius_msg; 211 212 /* Default size to be allocated for new RADIUS messages */ 213 #define RADIUS_DEFAULT_MSG_SIZE 1024 214 215 /* Default size to be allocated for attribute array */ 216 #define RADIUS_DEFAULT_ATTR_COUNT 16 217 218 219 /* MAC address ASCII format for IEEE 802.1X use 220 * (draft-congdon-radius-8021x-20.txt) */ 221 #define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X" 222 /* MAC address ASCII format for non-802.1X use */ 223 #define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x" 224 225 struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); 226 struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); 227 struct radius_msg * radius_msg_new(u8 code, u8 identifier); 228 void radius_msg_free(struct radius_msg *msg); 229 void radius_msg_dump(struct radius_msg *msg); 230 int radius_msg_finish(struct radius_msg *msg, const u8 *secret, 231 size_t secret_len); 232 int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, 233 size_t secret_len, const u8 *req_authenticator); 234 int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret, 235 size_t secret_len, 236 const struct radius_hdr *req_hdr); 237 void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, 238 size_t secret_len); 239 void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret, 240 size_t secret_len, 241 const u8 *req_authenticator); 242 int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret, 243 size_t secret_len); 244 int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret, 245 size_t secret_len, 246 int require_message_authenticator); 247 struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type, 248 const u8 *data, size_t data_len); 249 struct radius_msg * radius_msg_parse(const u8 *data, size_t len); 250 int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, 251 size_t data_len); 252 struct wpabuf * radius_msg_get_eap(struct radius_msg *msg); 253 int radius_msg_verify(struct radius_msg *msg, const u8 *secret, 254 size_t secret_len, struct radius_msg *sent_msg, 255 int auth); 256 int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, 257 size_t secret_len, const u8 *req_auth); 258 int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, 259 u8 type); 260 int radius_msg_make_authenticator(struct radius_msg *msg); 261 struct radius_ms_mppe_keys * 262 radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 263 const u8 *secret, size_t secret_len); 264 struct radius_ms_mppe_keys * 265 radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 266 const u8 *secret, size_t secret_len); 267 int radius_msg_add_mppe_keys(struct radius_msg *msg, 268 const u8 *req_authenticator, 269 const u8 *secret, size_t secret_len, 270 const u8 *send_key, size_t send_key_len, 271 const u8 *recv_key, size_t recv_key_len); 272 int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data, 273 size_t len); 274 int radius_user_password_hide(struct radius_msg *msg, 275 const u8 *data, size_t data_len, 276 const u8 *secret, size_t secret_len, 277 u8 *buf, size_t buf_len); 278 struct radius_attr_hdr * 279 radius_msg_add_attr_user_password(struct radius_msg *msg, 280 const u8 *data, size_t data_len, 281 const u8 *secret, size_t secret_len); 282 int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); 283 int radius_msg_get_vlanid(struct radius_msg *msg, int *untagged, int numtagged, 284 int *tagged); 285 char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen, 286 const u8 *secret, size_t secret_len, 287 struct radius_msg *sent_msg, size_t n); 288 289 static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, 290 u32 value) 291 { 292 u32 val = htonl(value); 293 return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; 294 } 295 296 static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, 297 u32 *value) 298 { 299 u32 val; 300 int res; 301 res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); 302 if (res != 4) 303 return -1; 304 305 *value = ntohl(val); 306 return 0; 307 } 308 int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, 309 size_t *len, const u8 *start); 310 int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); 311 312 313 struct radius_attr_data { 314 u8 *data; 315 size_t len; 316 }; 317 318 struct radius_class_data { 319 struct radius_attr_data *attr; 320 size_t count; 321 }; 322 323 void radius_free_class(struct radius_class_data *c); 324 int radius_copy_class(struct radius_class_data *dst, 325 const struct radius_class_data *src); 326 327 u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs); 328 329 int radius_gen_session_id(u8 *id, size_t len); 330 331 #endif /* RADIUS_H */ 332
