1/* 2 * RADIUS message processing 3 * Copyright (c) 2002-2009, 2012, 2014-2015, Jouni Malinen <j@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 18struct 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 26enum { 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 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_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_GSS_ACCEPTOR_SERVICE_NAME = 164, 106 RADIUS_ATTR_GSS_ACCEPTOR_HOST_NAME = 165, 107 RADIUS_ATTR_GSS_ACCEPTOR_SERVICE_SPECIFICS = 166, 108 RADIUS_ATTR_GSS_ACCEPTOR_REALM_NAME = 167, 109 RADIUS_ATTR_MOBILITY_DOMAIN_ID = 177, 110 RADIUS_ATTR_WLAN_HESSID = 181, 111 RADIUS_ATTR_WLAN_REASON_CODE = 185, 112 RADIUS_ATTR_WLAN_PAIRWISE_CIPHER = 186, 113 RADIUS_ATTR_WLAN_GROUP_CIPHER = 187, 114 RADIUS_ATTR_WLAN_AKM_SUITE = 188, 115 RADIUS_ATTR_WLAN_GROUP_MGMT_CIPHER = 189, 116}; 117 118 119/* Service-Type values (RFC 2865, 5.6) */ 120#define RADIUS_SERVICE_TYPE_FRAMED 2 121 122/* Termination-Action */ 123#define RADIUS_TERMINATION_ACTION_DEFAULT 0 124#define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1 125 126/* NAS-Port-Type */ 127#define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19 128 129/* Acct-Status-Type */ 130#define RADIUS_ACCT_STATUS_TYPE_START 1 131#define RADIUS_ACCT_STATUS_TYPE_STOP 2 132#define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3 133#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7 134#define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8 135 136/* Acct-Authentic */ 137#define RADIUS_ACCT_AUTHENTIC_RADIUS 1 138#define RADIUS_ACCT_AUTHENTIC_LOCAL 2 139#define RADIUS_ACCT_AUTHENTIC_REMOTE 3 140 141/* Acct-Terminate-Cause */ 142#define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1 143#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2 144#define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3 145#define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4 146#define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5 147#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6 148#define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7 149#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8 150#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9 151#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10 152#define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11 153#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12 154#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13 155#define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14 156#define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15 157#define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16 158#define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17 159#define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18 160 161#define RADIUS_TUNNEL_TAGS 32 162 163/* Tunnel-Type */ 164#define RADIUS_TUNNEL_TYPE_PPTP 1 165#define RADIUS_TUNNEL_TYPE_L2TP 3 166#define RADIUS_TUNNEL_TYPE_IPIP 7 167#define RADIUS_TUNNEL_TYPE_GRE 10 168#define RADIUS_TUNNEL_TYPE_VLAN 13 169 170/* Tunnel-Medium-Type */ 171#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1 172#define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2 173#define RADIUS_TUNNEL_MEDIUM_TYPE_802 6 174 175 176struct radius_attr_vendor { 177 u8 vendor_type; 178 u8 vendor_length; 179} STRUCT_PACKED; 180 181#define RADIUS_VENDOR_ID_CISCO 9 182#define RADIUS_CISCO_AV_PAIR 1 183 184/* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */ 185#define RADIUS_VENDOR_ID_MICROSOFT 311 186 187enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16, 188 RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17 189}; 190 191 192/* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */ 193#define RADIUS_VENDOR_ID_WFA 40808 194 195enum { 196 RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1, 197 RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2, 198 RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3, 199 RADIUS_VENDOR_ATTR_WFA_HS20_DEAUTH_REQ = 4, 200 RADIUS_VENDOR_ATTR_WFA_HS20_SESSION_INFO_URL = 5, 201 RADIUS_VENDOR_ATTR_WFA_HS20_ROAMING_CONSORTIUM = 6, 202 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILENAME = 7, 203 RADIUS_VENDOR_ATTR_WFA_HS20_TIMESTAMP = 8, 204 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_FILTERING = 9, 205 RADIUS_VENDOR_ATTR_WFA_HS20_T_C_URL = 10, 206}; 207 208#ifdef _MSC_VER 209#pragma pack(pop) 210#endif /* _MSC_VER */ 211 212struct radius_ms_mppe_keys { 213 u8 *send; 214 size_t send_len; 215 u8 *recv; 216 size_t recv_len; 217}; 218 219 220struct radius_msg; 221 222/* Default size to be allocated for new RADIUS messages */ 223#define RADIUS_DEFAULT_MSG_SIZE 1024 224 225/* Default size to be allocated for attribute array */ 226#define RADIUS_DEFAULT_ATTR_COUNT 16 227 228/* Maximum message length for incoming RADIUS messages, as stated in RFC 2865 229 * Section 3 ("Packet Format").*/ 230#define RADIUS_MAX_MSG_LEN 4096 231 232/* MAC address ASCII format for IEEE 802.1X use 233 * (draft-congdon-radius-8021x-20.txt) */ 234#define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X" 235/* MAC address ASCII format for non-802.1X use */ 236#define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x" 237 238struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); 239struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); 240struct radius_msg * radius_msg_new(u8 code, u8 identifier); 241void radius_msg_free(struct radius_msg *msg); 242void radius_msg_dump(struct radius_msg *msg); 243int radius_msg_finish(struct radius_msg *msg, const u8 *secret, 244 size_t secret_len); 245int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, 246 size_t secret_len, const u8 *req_authenticator); 247int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret, 248 size_t secret_len, 249 const struct radius_hdr *req_hdr); 250void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, 251 size_t secret_len); 252void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret, 253 size_t secret_len, 254 const u8 *req_authenticator); 255int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret, 256 size_t secret_len); 257int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret, 258 size_t secret_len, 259 int require_message_authenticator); 260struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type, 261 const u8 *data, size_t data_len); 262struct radius_msg * radius_msg_parse(const u8 *data, size_t len); 263int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, 264 size_t data_len); 265struct wpabuf * radius_msg_get_eap(struct radius_msg *msg); 266int radius_msg_verify(struct radius_msg *msg, const u8 *secret, 267 size_t secret_len, struct radius_msg *sent_msg, 268 int auth); 269int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, 270 size_t secret_len, const u8 *req_auth); 271int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, 272 u8 type); 273int radius_msg_make_authenticator(struct radius_msg *msg); 274struct radius_ms_mppe_keys * 275radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 276 const u8 *secret, size_t secret_len); 277struct radius_ms_mppe_keys * 278radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 279 const u8 *secret, size_t secret_len); 280int radius_msg_add_mppe_keys(struct radius_msg *msg, 281 const u8 *req_authenticator, 282 const u8 *secret, size_t secret_len, 283 const u8 *send_key, size_t send_key_len, 284 const u8 *recv_key, size_t recv_key_len); 285int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data, 286 size_t len); 287int radius_user_password_hide(struct radius_msg *msg, 288 const u8 *data, size_t data_len, 289 const u8 *secret, size_t secret_len, 290 u8 *buf, size_t buf_len); 291struct radius_attr_hdr * 292radius_msg_add_attr_user_password(struct radius_msg *msg, 293 const u8 *data, size_t data_len, 294 const u8 *secret, size_t secret_len); 295int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); 296int radius_msg_get_vlanid(struct radius_msg *msg, int *untagged, int numtagged, 297 int *tagged); 298char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen, 299 const u8 *secret, size_t secret_len, 300 struct radius_msg *sent_msg, size_t n); 301 302static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, 303 u32 value) 304{ 305 u32 val = htonl(value); 306 return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; 307} 308 309static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, 310 u32 *value) 311{ 312 u32 val; 313 int res; 314 res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); 315 if (res != 4) 316 return -1; 317 318 *value = ntohl(val); 319 return 0; 320} 321int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, 322 size_t *len, const u8 *start); 323int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); 324 325 326struct radius_attr_data { 327 u8 *data; 328 size_t len; 329}; 330 331struct radius_class_data { 332 struct radius_attr_data *attr; 333 size_t count; 334}; 335 336void radius_free_class(struct radius_class_data *c); 337int radius_copy_class(struct radius_class_data *dst, 338 const struct radius_class_data *src); 339 340u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs); 341 342int radius_gen_session_id(u8 *id, size_t len); 343 344#endif /* RADIUS_H */ 345