/* * RADIUS message processing * Copyright (c) 2002-2009, 2012, 2014, Jouni Malinen * * This software may be distributed under the terms of the BSD license. * See README for more details. */ #ifndef RADIUS_H #define RADIUS_H /* RFC 2865 - RADIUS */ #ifdef _MSC_VER #pragma pack(push, 1) #endif /* _MSC_VER */ struct radius_hdr { u8 code; u8 identifier; be16 length; /* including this header */ u8 authenticator[16]; /* followed by length-20 octets of attributes */ } STRUCT_PACKED; enum { RADIUS_CODE_ACCESS_REQUEST = 1, RADIUS_CODE_ACCESS_ACCEPT = 2, RADIUS_CODE_ACCESS_REJECT = 3, RADIUS_CODE_ACCOUNTING_REQUEST = 4, RADIUS_CODE_ACCOUNTING_RESPONSE = 5, RADIUS_CODE_ACCESS_CHALLENGE = 11, RADIUS_CODE_STATUS_SERVER = 12, RADIUS_CODE_STATUS_CLIENT = 13, RADIUS_CODE_DISCONNECT_REQUEST = 40, RADIUS_CODE_DISCONNECT_ACK = 41, RADIUS_CODE_DISCONNECT_NAK = 42, RADIUS_CODE_COA_REQUEST = 43, RADIUS_CODE_COA_ACK = 44, RADIUS_CODE_COA_NAK = 45, RADIUS_CODE_RESERVED = 255 }; struct radius_attr_hdr { u8 type; u8 length; /* including this header */ /* followed by length-2 octets of attribute value */ } STRUCT_PACKED; #define RADIUS_MAX_ATTR_LEN (255 - sizeof(struct radius_attr_hdr)) enum { RADIUS_ATTR_USER_NAME = 1, RADIUS_ATTR_USER_PASSWORD = 2, RADIUS_ATTR_NAS_IP_ADDRESS = 4, RADIUS_ATTR_NAS_PORT = 5, RADIUS_ATTR_FRAMED_MTU = 12, RADIUS_ATTR_REPLY_MESSAGE = 18, RADIUS_ATTR_STATE = 24, RADIUS_ATTR_CLASS = 25, RADIUS_ATTR_VENDOR_SPECIFIC = 26, RADIUS_ATTR_SESSION_TIMEOUT = 27, RADIUS_ATTR_IDLE_TIMEOUT = 28, RADIUS_ATTR_TERMINATION_ACTION = 29, RADIUS_ATTR_CALLED_STATION_ID = 30, RADIUS_ATTR_CALLING_STATION_ID = 31, RADIUS_ATTR_NAS_IDENTIFIER = 32, RADIUS_ATTR_PROXY_STATE = 33, RADIUS_ATTR_ACCT_STATUS_TYPE = 40, RADIUS_ATTR_ACCT_DELAY_TIME = 41, RADIUS_ATTR_ACCT_INPUT_OCTETS = 42, RADIUS_ATTR_ACCT_OUTPUT_OCTETS = 43, RADIUS_ATTR_ACCT_SESSION_ID = 44, RADIUS_ATTR_ACCT_AUTHENTIC = 45, RADIUS_ATTR_ACCT_SESSION_TIME = 46, RADIUS_ATTR_ACCT_INPUT_PACKETS = 47, RADIUS_ATTR_ACCT_OUTPUT_PACKETS = 48, RADIUS_ATTR_ACCT_TERMINATE_CAUSE = 49, RADIUS_ATTR_ACCT_MULTI_SESSION_ID = 50, RADIUS_ATTR_ACCT_LINK_COUNT = 51, RADIUS_ATTR_ACCT_INPUT_GIGAWORDS = 52, RADIUS_ATTR_ACCT_OUTPUT_GIGAWORDS = 53, RADIUS_ATTR_EVENT_TIMESTAMP = 55, RADIUS_ATTR_NAS_PORT_TYPE = 61, RADIUS_ATTR_TUNNEL_TYPE = 64, RADIUS_ATTR_TUNNEL_MEDIUM_TYPE = 65, RADIUS_ATTR_TUNNEL_PASSWORD = 69, RADIUS_ATTR_CONNECT_INFO = 77, RADIUS_ATTR_EAP_MESSAGE = 79, RADIUS_ATTR_MESSAGE_AUTHENTICATOR = 80, RADIUS_ATTR_TUNNEL_PRIVATE_GROUP_ID = 81, RADIUS_ATTR_ACCT_INTERIM_INTERVAL = 85, RADIUS_ATTR_CHARGEABLE_USER_IDENTITY = 89, RADIUS_ATTR_NAS_IPV6_ADDRESS = 95, RADIUS_ATTR_ERROR_CAUSE = 101 }; /* Termination-Action */ #define RADIUS_TERMINATION_ACTION_DEFAULT 0 #define RADIUS_TERMINATION_ACTION_RADIUS_REQUEST 1 /* NAS-Port-Type */ #define RADIUS_NAS_PORT_TYPE_IEEE_802_11 19 /* Acct-Status-Type */ #define RADIUS_ACCT_STATUS_TYPE_START 1 #define RADIUS_ACCT_STATUS_TYPE_STOP 2 #define RADIUS_ACCT_STATUS_TYPE_INTERIM_UPDATE 3 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_ON 7 #define RADIUS_ACCT_STATUS_TYPE_ACCOUNTING_OFF 8 /* Acct-Authentic */ #define RADIUS_ACCT_AUTHENTIC_RADIUS 1 #define RADIUS_ACCT_AUTHENTIC_LOCAL 2 #define RADIUS_ACCT_AUTHENTIC_REMOTE 3 /* Acct-Terminate-Cause */ #define RADIUS_ACCT_TERMINATE_CAUSE_USER_REQUEST 1 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_CARRIER 2 #define RADIUS_ACCT_TERMINATE_CAUSE_LOST_SERVICE 3 #define RADIUS_ACCT_TERMINATE_CAUSE_IDLE_TIMEOUT 4 #define RADIUS_ACCT_TERMINATE_CAUSE_SESSION_TIMEOUT 5 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_RESET 6 #define RADIUS_ACCT_TERMINATE_CAUSE_ADMIN_REBOOT 7 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_ERROR 8 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_ERROR 9 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REQUEST 10 #define RADIUS_ACCT_TERMINATE_CAUSE_NAS_REBOOT 11 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_UNNEEDED 12 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_PREEMPTED 13 #define RADIUS_ACCT_TERMINATE_CAUSE_PORT_SUSPENDED 14 #define RADIUS_ACCT_TERMINATE_CAUSE_SERVICE_UNAVAILABLE 15 #define RADIUS_ACCT_TERMINATE_CAUSE_CALLBACK 16 #define RADIUS_ACCT_TERMINATE_CAUSE_USER_ERROR 17 #define RADIUS_ACCT_TERMINATE_CAUSE_HOST_REQUEST 18 #define RADIUS_TUNNEL_TAGS 32 /* Tunnel-Type */ #define RADIUS_TUNNEL_TYPE_PPTP 1 #define RADIUS_TUNNEL_TYPE_L2TP 3 #define RADIUS_TUNNEL_TYPE_IPIP 7 #define RADIUS_TUNNEL_TYPE_GRE 10 #define RADIUS_TUNNEL_TYPE_VLAN 13 /* Tunnel-Medium-Type */ #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV4 1 #define RADIUS_TUNNEL_MEDIUM_TYPE_IPV6 2 #define RADIUS_TUNNEL_MEDIUM_TYPE_802 6 struct radius_attr_vendor { u8 vendor_type; u8 vendor_length; } STRUCT_PACKED; #define RADIUS_VENDOR_ID_CISCO 9 #define RADIUS_CISCO_AV_PAIR 1 /* RFC 2548 - Microsoft Vendor-specific RADIUS Attributes */ #define RADIUS_VENDOR_ID_MICROSOFT 311 enum { RADIUS_VENDOR_ATTR_MS_MPPE_SEND_KEY = 16, RADIUS_VENDOR_ATTR_MS_MPPE_RECV_KEY = 17 }; /* Hotspot 2.0 - WFA Vendor-specific RADIUS Attributes */ #define RADIUS_VENDOR_ID_WFA 40808 enum { RADIUS_VENDOR_ATTR_WFA_HS20_SUBSCR_REMEDIATION = 1, RADIUS_VENDOR_ATTR_WFA_HS20_AP_VERSION = 2, RADIUS_VENDOR_ATTR_WFA_HS20_STA_VERSION = 3, }; #ifdef _MSC_VER #pragma pack(pop) #endif /* _MSC_VER */ struct radius_ms_mppe_keys { u8 *send; size_t send_len; u8 *recv; size_t recv_len; }; struct radius_msg; /* Default size to be allocated for new RADIUS messages */ #define RADIUS_DEFAULT_MSG_SIZE 1024 /* Default size to be allocated for attribute array */ #define RADIUS_DEFAULT_ATTR_COUNT 16 /* MAC address ASCII format for IEEE 802.1X use * (draft-congdon-radius-8021x-20.txt) */ #define RADIUS_802_1X_ADDR_FORMAT "%02X-%02X-%02X-%02X-%02X-%02X" /* MAC address ASCII format for non-802.1X use */ #define RADIUS_ADDR_FORMAT "%02x%02x%02x%02x%02x%02x" struct radius_hdr * radius_msg_get_hdr(struct radius_msg *msg); struct wpabuf * radius_msg_get_buf(struct radius_msg *msg); struct radius_msg * radius_msg_new(u8 code, u8 identifier); void radius_msg_free(struct radius_msg *msg); void radius_msg_dump(struct radius_msg *msg); int radius_msg_finish(struct radius_msg *msg, const u8 *secret, size_t secret_len); int radius_msg_finish_srv(struct radius_msg *msg, const u8 *secret, size_t secret_len, const u8 *req_authenticator); int radius_msg_finish_das_resp(struct radius_msg *msg, const u8 *secret, size_t secret_len, const struct radius_hdr *req_hdr); void radius_msg_finish_acct(struct radius_msg *msg, const u8 *secret, size_t secret_len); void radius_msg_finish_acct_resp(struct radius_msg *msg, const u8 *secret, size_t secret_len, const u8 *req_authenticator); int radius_msg_verify_acct_req(struct radius_msg *msg, const u8 *secret, size_t secret_len); int radius_msg_verify_das_req(struct radius_msg *msg, const u8 *secret, size_t secret_len); struct radius_attr_hdr * radius_msg_add_attr(struct radius_msg *msg, u8 type, const u8 *data, size_t data_len); struct radius_msg * radius_msg_parse(const u8 *data, size_t len); int radius_msg_add_eap(struct radius_msg *msg, const u8 *data, size_t data_len); struct wpabuf * radius_msg_get_eap(struct radius_msg *msg); int radius_msg_verify(struct radius_msg *msg, const u8 *secret, size_t secret_len, struct radius_msg *sent_msg, int auth); int radius_msg_verify_msg_auth(struct radius_msg *msg, const u8 *secret, size_t secret_len, const u8 *req_auth); int radius_msg_copy_attr(struct radius_msg *dst, struct radius_msg *src, u8 type); void radius_msg_make_authenticator(struct radius_msg *msg, const u8 *data, size_t len); struct radius_ms_mppe_keys * radius_msg_get_ms_keys(struct radius_msg *msg, struct radius_msg *sent_msg, const u8 *secret, size_t secret_len); struct radius_ms_mppe_keys * radius_msg_get_cisco_keys(struct radius_msg *msg, struct radius_msg *sent_msg, const u8 *secret, size_t secret_len); int radius_msg_add_mppe_keys(struct radius_msg *msg, const u8 *req_authenticator, const u8 *secret, size_t secret_len, const u8 *send_key, size_t send_key_len, const u8 *recv_key, size_t recv_key_len); int radius_msg_add_wfa(struct radius_msg *msg, u8 subtype, const u8 *data, size_t len); struct radius_attr_hdr * radius_msg_add_attr_user_password(struct radius_msg *msg, const u8 *data, size_t data_len, const u8 *secret, size_t secret_len); int radius_msg_get_attr(struct radius_msg *msg, u8 type, u8 *buf, size_t len); int radius_msg_get_vlanid(struct radius_msg *msg); char * radius_msg_get_tunnel_password(struct radius_msg *msg, int *keylen, const u8 *secret, size_t secret_len, struct radius_msg *sent_msg, size_t n); static inline int radius_msg_add_attr_int32(struct radius_msg *msg, u8 type, u32 value) { u32 val = htonl(value); return radius_msg_add_attr(msg, type, (u8 *) &val, 4) != NULL; } static inline int radius_msg_get_attr_int32(struct radius_msg *msg, u8 type, u32 *value) { u32 val; int res; res = radius_msg_get_attr(msg, type, (u8 *) &val, 4); if (res != 4) return -1; *value = ntohl(val); return 0; } int radius_msg_get_attr_ptr(struct radius_msg *msg, u8 type, u8 **buf, size_t *len, const u8 *start); int radius_msg_count_attr(struct radius_msg *msg, u8 type, int min_len); struct radius_attr_data { u8 *data; size_t len; }; struct radius_class_data { struct radius_attr_data *attr; size_t count; }; void radius_free_class(struct radius_class_data *c); int radius_copy_class(struct radius_class_data *dst, const struct radius_class_data *src); u8 radius_msg_find_unlisted_attr(struct radius_msg *msg, u8 *attrs); #endif /* RADIUS_H */