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