/* packet-tacacs.h * Routines for cisco tacplus packet dissection * Copyright 2000, Emanuele Caratti * * Wireshark - Network traffic analyzer * By Gerald Combs * Copyright 1998 Gerald Combs * * SPDX-License-Identifier: GPL-2.0-or-later */ #ifndef __PACKET_TACACS_H__ #define __PACKET_TACACS_H__ #define TAC_PLUS_HDR_SIZE 12 #define MD5_LEN 16 #define MSCHAP_DIGEST_LEN 49 enum { FLAGS_UNENCRYPTED = 0x01, FLAGS_SINGLE = 0x04 }; /* Tacacs+ packet type */ enum { TAC_PLUS_AUTHEN = 0x01, /* Authentication */ TAC_PLUS_AUTHOR = 0x02, /* Authorization */ TAC_PLUS_ACCT = 0x03 /* Accounting */ }; /* Flags */ #define TAC_PLUS_ENCRYPTED 0x0 #define TAC_PLUS_CLEAR 0x1 /* Authentication action to perform */ enum { TAC_PLUS_AUTHEN_LOGIN = 0x01, TAC_PLUS_AUTHEN_CHPASS = 0x02, TAC_PLUS_AUTHEN_SENDPASS = 0x03, /* deprecated */ TAC_PLUS_AUTHEN_SENDAUTH = 0x04 }; /* Authentication priv_levels */ enum { TAC_PLUS_PRIV_LVL_MAX = 0x0f, TAC_PLUS_PRIV_LVL_ROOT = 0x0f, TAC_PLUS_PRIV_LVL_USER = 0x01, TAC_PLUS_PRIV_LVL_MIN = 0x00 }; /* authen types */ enum { TAC_PLUS_AUTHEN_TYPE_ASCII = 0x01, /* ascii */ TAC_PLUS_AUTHEN_TYPE_PAP = 0x02, /* pap */ TAC_PLUS_AUTHEN_TYPE_CHAP = 0x03, /* chap */ TAC_PLUS_AUTHEN_TYPE_ARAP = 0x04, /* arap */ TAC_PLUS_AUTHEN_TYPE_MSCHAP = 0x05 /* mschap */ }; /* authen services */ enum { TAC_PLUS_AUTHEN_SVC_NONE = 0x00, TAC_PLUS_AUTHEN_SVC_LOGIN = 0x01, TAC_PLUS_AUTHEN_SVC_ENABLE = 0x02, TAC_PLUS_AUTHEN_SVC_PPP = 0x03, TAC_PLUS_AUTHEN_SVC_ARAP = 0x04, TAC_PLUS_AUTHEN_SVC_PT = 0x05, TAC_PLUS_AUTHEN_SVC_RCMD = 0x06, TAC_PLUS_AUTHEN_SVC_X25 = 0x07, TAC_PLUS_AUTHEN_SVC_NASI = 0x08, TAC_PLUS_AUTHEN_SVC_FWPROXY = 0x09 }; /* status of reply packet, that client get from server in authen */ enum { TAC_PLUS_AUTHEN_STATUS_PASS = 0x01, TAC_PLUS_AUTHEN_STATUS_FAIL = 0x02, TAC_PLUS_AUTHEN_STATUS_GETDATA = 0x03, TAC_PLUS_AUTHEN_STATUS_GETUSER = 0x04, TAC_PLUS_AUTHEN_STATUS_GETPASS = 0x05, TAC_PLUS_AUTHEN_STATUS_RESTART = 0x06, TAC_PLUS_AUTHEN_STATUS_ERROR = 0x07, TAC_PLUS_AUTHEN_STATUS_FOLLOW = 0x21 }; /* Authen reply Flags */ #define TAC_PLUS_REPLY_FLAG_NOECHO 0x01 /* Authen continue Flags */ #define TAC_PLUS_CONTINUE_FLAG_ABORT 0x01 /* methods of authentication */ enum { TAC_PLUS_AUTHEN_METH_NOT_SET = 0x00, TAC_PLUS_AUTHEN_METH_NONE = 0x01, TAC_PLUS_AUTHEN_METH_KRB5 = 0x02, TAC_PLUS_AUTHEN_METH_LINE = 0x03, TAC_PLUS_AUTHEN_METH_ENABLE = 0x04, TAC_PLUS_AUTHEN_METH_LOCAL = 0x05, TAC_PLUS_AUTHEN_METH_TACACSPLUS = 0x06, TAC_PLUS_AUTHEN_METH_GUEST = 0x08, TAC_PLUS_AUTHEN_METH_RADIUS = 0x10, TAC_PLUS_AUTHEN_METH_KRB4 = 0x11, TAC_PLUS_AUTHEN_METH_RCMD = 0x20 }; /* authorization status */ enum { TAC_PLUS_AUTHOR_STATUS_PASS_ADD = 0x01, TAC_PLUS_AUTHOR_STATUS_PASS_REPL = 0x02, TAC_PLUS_AUTHOR_STATUS_FAIL = 0x10, TAC_PLUS_AUTHOR_STATUS_ERROR = 0x11, TAC_PLUS_AUTHOR_STATUS_FOLLOW = 0x21 }; /* accounting flag */ enum { TAC_PLUS_ACCT_FLAG_MORE = 0x1, /* deprecated */ TAC_PLUS_ACCT_FLAG_START = 0x2, TAC_PLUS_ACCT_FLAG_STOP = 0x4, TAC_PLUS_ACCT_FLAG_WATCHDOG = 0x8 }; /* accounting status */ enum { TAC_PLUS_ACCT_STATUS_SUCCESS = 0x01, TAC_PLUS_ACCT_STATUS_ERROR = 0x02, TAC_PLUS_ACCT_STATUS_FOLLOW = 0x21 }; /* Header offsets */ #define H_VER_OFF (0) #define H_TYPE_OFF (H_VER_OFF+1) #define H_SEQ_NO_OFF (H_TYPE_OFF+1) #define H_FLAGS_OFF (H_SEQ_NO_OFF+1) #define H_SESSION_ID_OFF (H_FLAGS_OFF+1) #define H_LENGTH_OFF (H_SESSION_ID_OFF+4) #define TACPLUS_BODY_OFF 0 /* authen START offsets */ #define AUTHEN_S_ACTION_OFF (TACPLUS_BODY_OFF) #define AUTHEN_S_PRIV_LVL_OFF (AUTHEN_S_ACTION_OFF+1) #define AUTHEN_S_AUTHEN_TYPE_OFF (AUTHEN_S_PRIV_LVL_OFF+1) #define AUTHEN_S_SERVICE_OFF (AUTHEN_S_AUTHEN_TYPE_OFF+1) #define AUTHEN_S_USER_LEN_OFF (AUTHEN_S_SERVICE_OFF+1) #define AUTHEN_S_PORT_LEN_OFF (AUTHEN_S_USER_LEN_OFF+1) #define AUTHEN_S_REM_ADDR_LEN_OFF (AUTHEN_S_PORT_LEN_OFF+1) #define AUTHEN_S_DATA_LEN_OFF (AUTHEN_S_REM_ADDR_LEN_OFF+1) #define AUTHEN_S_VARDATA_OFF (AUTHEN_S_DATA_LEN_OFF+1) /* variable data offset (user, port, etc ) */ /* authen REPLY fields offset */ #define AUTHEN_R_STATUS_OFF (TACPLUS_BODY_OFF) #define AUTHEN_R_FLAGS_OFF (AUTHEN_R_STATUS_OFF+1) #define AUTHEN_R_SRV_MSG_LEN_OFF (AUTHEN_R_FLAGS_OFF+1) #define AUTHEN_R_DATA_LEN_OFF (AUTHEN_R_SRV_MSG_LEN_OFF+2) #define AUTHEN_R_VARDATA_OFF (AUTHEN_R_DATA_LEN_OFF+2) /* authen CONTINUE fields offset */ #define AUTHEN_C_USER_LEN_OFF (TACPLUS_BODY_OFF) #define AUTHEN_C_DATA_LEN_OFF (AUTHEN_C_USER_LEN_OFF+2) #define AUTHEN_C_FLAGS_OFF (AUTHEN_C_DATA_LEN_OFF+2) #define AUTHEN_C_VARDATA_OFF (AUTHEN_C_FLAGS_OFF+1) /* acct REQUEST fields offsets */ #define ACCT_Q_FLAGS_OFF (TACPLUS_BODY_OFF) #define ACCT_Q_METHOD_OFF (ACCT_Q_FLAGS_OFF+1) #define ACCT_Q_PRIV_LVL_OFF (ACCT_Q_METHOD_OFF+1) #define ACCT_Q_AUTHEN_TYPE_OFF (ACCT_Q_PRIV_LVL_OFF+1) #define ACCT_Q_SERVICE_OFF (ACCT_Q_AUTHEN_TYPE_OFF+1) #define ACCT_Q_USER_LEN_OFF (ACCT_Q_SERVICE_OFF+1) #define ACCT_Q_PORT_LEN_OFF (ACCT_Q_USER_LEN_OFF+1) #define ACCT_Q_REM_ADDR_LEN_OFF (ACCT_Q_PORT_LEN_OFF+1) #define ACCT_Q_ARG_CNT_OFF (ACCT_Q_REM_ADDR_LEN_OFF+1) #define ACCT_Q_VARDATA_OFF (ACCT_Q_ARG_CNT_OFF+1) /* acct REPLY fields offsets */ #define ACCT_R_SRV_MSG_LEN_OFF (TACPLUS_BODY_OFF) #define ACCT_R_DATA_LEN_OFF (ACCT_R_SRV_MSG_LEN_OFF+2) #define ACCT_R_STATUS_OFF (ACCT_R_DATA_LEN_OFF+2) #define ACCT_R_VARDATA_OFF (ACCT_R_STATUS_OFF+1) /* AUTHORIZATION */ /* Request */ #define AUTHOR_Q_AUTH_METH_OFF (TACPLUS_BODY_OFF) #define AUTHOR_Q_PRIV_LVL_OFF (AUTHOR_Q_AUTH_METH_OFF+1) #define AUTHOR_Q_AUTHEN_TYPE_OFF (AUTHOR_Q_PRIV_LVL_OFF+1) #define AUTHOR_Q_SERVICE_OFF (AUTHOR_Q_AUTHEN_TYPE_OFF+1) #define AUTHOR_Q_USER_LEN_OFF (AUTHOR_Q_SERVICE_OFF+1) #define AUTHOR_Q_PORT_LEN_OFF (AUTHOR_Q_USER_LEN_OFF+1) #define AUTHOR_Q_REM_ADDR_LEN_OFF (AUTHOR_Q_PORT_LEN_OFF+1) #define AUTHOR_Q_ARGC_OFF (AUTHOR_Q_REM_ADDR_LEN_OFF+1) #define AUTHOR_Q_VARDATA_OFF (AUTHOR_Q_ARGC_OFF+1) /* Reply */ #define AUTHOR_R_STATUS_OFF (TACPLUS_BODY_OFF) #define AUTHOR_R_ARGC_OFF (AUTHOR_R_STATUS_OFF+1) #define AUTHOR_R_SRV_MSG_LEN_OFF (AUTHOR_R_ARGC_OFF+1) #define AUTHOR_R_DATA_LEN_OFF (AUTHOR_R_SRV_MSG_LEN_OFF+2) #define AUTHOR_R_VARDATA_OFF (AUTHOR_R_DATA_LEN_OFF+2) static const value_string tacplus_type_vals[] = { {TAC_PLUS_AUTHEN, "Authentication"}, {TAC_PLUS_AUTHOR, "Authorization" }, {TAC_PLUS_ACCT, "Accounting" }, {0, NULL}}; static const value_string tacplus_authen_action_vals[] = { {TAC_PLUS_AUTHEN_LOGIN, "Inbound Login"}, {TAC_PLUS_AUTHEN_CHPASS, "Change password request"}, {TAC_PLUS_AUTHEN_SENDPASS, "Send password request"}, {TAC_PLUS_AUTHEN_SENDAUTH, "Outbound Request (SENDAUTH)"}, {0, NULL}}; static const value_string tacplus_authen_type_vals[] = { {TAC_PLUS_AUTHEN_TYPE_ASCII, "ASCII"}, {TAC_PLUS_AUTHEN_TYPE_PAP, "PAP"}, {TAC_PLUS_AUTHEN_TYPE_CHAP, "CHAP"}, {TAC_PLUS_AUTHEN_TYPE_ARAP, "ARAP"}, {TAC_PLUS_AUTHEN_TYPE_MSCHAP, "MS-CHAP"}, {0, NULL}}; static const value_string tacplus_authen_service_vals[] = { {TAC_PLUS_AUTHEN_SVC_NONE, "TAC_PLUS_AUTHEN_SVC_NONE"}, {TAC_PLUS_AUTHEN_SVC_LOGIN, "Login" }, {TAC_PLUS_AUTHEN_SVC_ENABLE, "ENABLE"}, {TAC_PLUS_AUTHEN_SVC_PPP, "PPP" }, {TAC_PLUS_AUTHEN_SVC_ARAP, "ARAP" }, {TAC_PLUS_AUTHEN_SVC_PT, "TAC_PLUS_AUTHEN_SVC_PT"}, {TAC_PLUS_AUTHEN_SVC_RCMD, "TAC_PLUS_AUTHEN_SVC_RCMD"}, {TAC_PLUS_AUTHEN_SVC_X25, "TAC_PLUS_AUTHEN_SVC_X25"}, {TAC_PLUS_AUTHEN_SVC_NASI, "TAC_PLUS_AUTHEN_SVC_NASI"}, {TAC_PLUS_AUTHEN_SVC_FWPROXY, "TAC_PLUS_AUTHEN_SVC_FWPROXY"}, {0, NULL}}; static const value_string tacplus_reply_status_vals[] = { {TAC_PLUS_AUTHEN_STATUS_PASS, "Authentication Passed"}, {TAC_PLUS_AUTHEN_STATUS_FAIL, "Authentication Failed"}, {TAC_PLUS_AUTHEN_STATUS_GETDATA, "Send Data"}, {TAC_PLUS_AUTHEN_STATUS_GETUSER, "Send Username"}, {TAC_PLUS_AUTHEN_STATUS_GETPASS, "Send Password"}, {TAC_PLUS_AUTHEN_STATUS_RESTART, "Restart Authentication Sequence"}, {TAC_PLUS_AUTHEN_STATUS_ERROR, "Unrecoverable Error"}, {TAC_PLUS_AUTHEN_STATUS_FOLLOW, "Use Alternate Server"}, {0, NULL}}; static const value_string tacplus_authen_method[] = { {TAC_PLUS_AUTHEN_METH_NOT_SET, "NOT_SET"}, {TAC_PLUS_AUTHEN_METH_NONE, "NONE"}, {TAC_PLUS_AUTHEN_METH_KRB5, "KRB5"}, {TAC_PLUS_AUTHEN_METH_LINE, "LINE"}, {TAC_PLUS_AUTHEN_METH_ENABLE, "ENABLE"}, {TAC_PLUS_AUTHEN_METH_LOCAL, "LOCAL"}, {TAC_PLUS_AUTHEN_METH_TACACSPLUS, "TACACSPLUS"}, {TAC_PLUS_AUTHEN_METH_GUEST, "GUEST"}, {TAC_PLUS_AUTHEN_METH_RADIUS, "RADIUS"}, {TAC_PLUS_AUTHEN_METH_KRB4, "KRB4"}, {TAC_PLUS_AUTHEN_METH_RCMD, "RCMD"}, {0, NULL}}; static const value_string tacplus_author_status[] = { {TAC_PLUS_AUTHOR_STATUS_PASS_ADD, "PASS_ADD"}, {TAC_PLUS_AUTHOR_STATUS_PASS_REPL, "PASS_REPL"}, {TAC_PLUS_AUTHOR_STATUS_FAIL, "FAIL"}, {TAC_PLUS_AUTHOR_STATUS_ERROR, "ERROR"}, {TAC_PLUS_AUTHOR_STATUS_FOLLOW, "FOLLOW"}, {0, NULL}}; static const value_string tacplus_acct_status[] = { {TAC_PLUS_ACCT_STATUS_SUCCESS, "Success"}, {TAC_PLUS_ACCT_STATUS_ERROR, "Error"}, {TAC_PLUS_ACCT_STATUS_FOLLOW, "Follow"}, {0, NULL}}; #endif /* __PACKET_TACACS_H__ */ /* * Editor modelines - https://www.wireshark.org/tools/modelines.html * * Local variables: * c-basic-offset: 8 * tab-width: 8 * indent-tabs-mode: t * End: * * vi: set shiftwidth=8 tabstop=8 noexpandtab: * :indentSize=8:tabSize=8:noTabs=false: */