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_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 171struct 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 182enum { 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 190enum { 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 202struct radius_ms_mppe_keys { 203 u8 *send; 204 size_t send_len; 205 u8 *recv; 206 size_t recv_len; 207}; 208 209 210struct 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 225struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); 226struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); 227struct radius_msg * radius_msg_new(u8 code, u8 identifier); 228void radius_msg_free(struct radius_msg *msg); 229void radius_msg_dump(struct radius_msg *msg); 230int radius_msg_finish(struct radius_msg *msg, const u8 *secret, 231 size_t secret_len); 232int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, 233 size_t secret_len, const u8 *req_authenticator); 234int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret, 235 size_t secret_len, 236 const struct radius_hdr *req_hdr); 237void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, 238 size_t secret_len); 239void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret, 240 size_t secret_len, 241 const u8 *req_authenticator); 242int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret, 243 size_t secret_len); 244int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret, 245 size_t secret_len); 246struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type, 247 const u8 *data, size_t data_len); 248struct radius_msg * radius_msg_parse(const u8 *data, size_t len); 249int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, 250 size_t data_len); 251struct wpabuf * radius_msg_get_eap(struct radius_msg *msg); 252int radius_msg_verify(struct radius_msg *msg, const u8 *secret, 253 size_t secret_len, struct radius_msg *sent_msg, 254 int auth); 255int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, 256 size_t secret_len, const u8 *req_auth); 257int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, 258 u8 type); 259int radius_msg_make_authenticator(struct radius_msg *msg); 260struct radius_ms_mppe_keys * 261radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 262 const u8 *secret, size_t secret_len); 263struct radius_ms_mppe_keys * 264radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, 265 const u8 *secret, size_t secret_len); 266int radius_msg_add_mppe_keys(struct radius_msg *msg, 267 const u8 *req_authenticator, 268 const u8 *secret, size_t secret_len, 269 const u8 *send_key, size_t send_key_len, 270 const u8 *recv_key, size_t recv_key_len); 271int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data, 272 size_t len); 273int radius_user_password_hide(struct radius_msg *msg, 274 const u8 *data, size_t data_len, 275 const u8 *secret, size_t secret_len, 276 u8 *buf, size_t buf_len); 277struct radius_attr_hdr * 278radius_msg_add_attr_user_password(struct radius_msg *msg, 279 const u8 *data, size_t data_len, 280 const u8 *secret, size_t secret_len); 281int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); 282int radius_msg_get_vlanid(struct radius_msg *msg, int *untagged, int numtagged, 283 int *tagged); 284char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen, 285 const u8 *secret, size_t secret_len, 286 struct radius_msg *sent_msg, size_t n); 287 288static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, 289 u32 value) 290{ 291 u32 val = htonl(value); 292 return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; 293} 294 295static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, 296 u32 *value) 297{ 298 u32 val; 299 int res; 300 res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); 301 if (res != 4) 302 return -1; 303 304 *value = ntohl(val); 305 return 0; 306} 307int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, 308 size_t *len, const u8 *start); 309int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); 310 311 312struct radius_attr_data { 313 u8 *data; 314 size_t len; 315}; 316 317struct radius_class_data { 318 struct radius_attr_data *attr; 319 size_t count; 320}; 321 322void radius_free_class(struct radius_class_data *c); 323int radius_copy_class(struct radius_class_data *dst, 324 const struct radius_class_data *src); 325 326u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs); 327 328int radius_gen_session_id(u8 *id, size_t len); 329 330#endif /* RADIUS_H */ 331