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wireshark/epan/dissectors/packet-tacacs.h

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/* packet-tacacs.h
* Routines for cisco tacplus packet dissection
* Copyright 2000, Emanuele Caratti <wiz@iol.it>
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
#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 = 0x03,
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)
#if 0
/* Packet structures */
typedef struct {
u_char version;
u_char type;
u_char seq_no;
u_char flags;
guint32 session_id;
guint32 length;
} tacplus_pkt_hdr;
/* Authentication START packet */
typedef struct {
u_char action;
u_char priv_lvl;
u_char authen_type;
u_char service;
u_char user_len;
u_char port_len;
u_char rem_addr_len;
u_char data_len;
u_char vardata[1];
} tacplus_authen_start ;
/* Authentication CONTINUE packet */
typedef struct {
guint16 user_len;
guint16 data_len;
u_char flags;
u_char vardata[1];
} tacplus_authen_continue ;
/* Authentication REPLY packet */
typedef struct {
u_char status;
u_char flags;
guint16 srv_msg_len;
guint16 data_len;
u_char vardata[1];
} tacplus_authen_reply;
/* Authentication sub-PACKET */
typedef union {
tacplus_authen_start s; /* start */
tacplus_authen_continue c; /* continue */
tacplus_authen_reply r; /* reply (from srv) */
} tacplus_authen_pkt;
/* AUTHORIZATION request */
typedef struct {
u_char authen_method;
u_char priv_lvl;
u_char authen_type;
u_char authen_service;
u_char user_len;
u_char port_len;
u_char rem_addr_len;
u_char arg_cnt;
u_char vardata[1];
} tacplus_author_request;
typedef struct {
u_char status;
u_char arg_cnt;
guint16 srv_msg_len;
guint16 data_len;
u_char vardata[1];
} tacplus_author_reply;
typedef union {
tacplus_author_request q;
tacplus_author_reply r;
} tacplus_author_pkt;
/* ACCOUNTING request */
typedef struct {
u_char flags;
u_char authen_method;
u_char priv_lvl;
u_char authen_type;
u_char authen_service;
u_char user_len;
u_char port_len;
u_char rem_addr_len;
u_char arg_cnt;
u_char vardata[1];
} tacplus_account_request;
typedef struct {
guint16 srv_msg_len;
guint16 data_len;
u_char status;
u_char vardata[1];
} tacplus_account_reply;
typedef union {
tacplus_account_request q; /* Request */
tacplus_account_reply r; /* Reply */
} tacplus_account_pkt;
/* TACACS+ Packet */
typedef struct {
tacplus_pkt_hdr hdr;
union {
tacplus_authen_pkt authen;
tacplus_author_pkt author;
tacplus_account_pkt acct;
} body;
} tacplus_pkt;
#endif
/* From my old tacacs dissector */
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}};
#if 0
static const value_string tacplus_authen_priv_lvl_vals[] = {
{TAC_PLUS_PRIV_LVL_MAX, "LVL_MAX"},
{TAC_PLUS_PRIV_LVL_ROOT, "LVL_ROOT"},
{TAC_PLUS_PRIV_LVL_USER, "LVL_USER"},
{TAC_PLUS_PRIV_LVL_MIN, "LVL_MIN"},
{0, NULL}};
#endif
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}};
#ifdef __TAC_ACCOUNTING__
static const value_string tacplus_acct_flags[] = {
{TAC_PLUS_ACCT_FLAG_MORE, "More (deprecated)"},
{TAC_PLUS_ACCT_FLAG_START, "Start"},
{TAC_PLUS_ACCT_FLAG_STOP, "Stop"},
{TAC_PLUS_ACCT_FLAG_WATCHDOG,"Update"},
{0, NULL}};
#endif
#endif /* __PACKET_TACACS_H__ */
/*
* Editor modelines - http://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:
*/
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