forked from osmocom/wireshark
936 lines
28 KiB
C
936 lines
28 KiB
C
/* packet-pptp.c
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* Routines for the Point-to-Point Tunnelling Protocol (PPTP) (RFC 2637)
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* Brad Robel-Forrest <brad.robel-forrest@watchguard.com>
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*
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* $Id: packet-pptp.c,v 1.12 2000/08/25 12:30:30 deniel Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@zing.org>
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* Copyright 1998 Gerald Combs
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*
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#ifdef HAVE_SYS_TYPES_H
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# include <sys/types.h>
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#endif
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#include <stdio.h>
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#ifdef HAVE_NETINET_IN_H
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#include <netinet/in.h>
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#endif
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#include <glib.h>
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#include "packet.h"
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static int proto_pptp = -1;
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static int hf_pptp_message_type = -1;
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static gint ett_pptp = -1;
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#define TCP_PORT_PPTP 1723
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#define MAGIC_COOKIE 0x1A2B3C4D
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#define NUM_MSG_TYPES 3
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#define msgtype2str(t) \
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((t < NUM_MSG_TYPES) ? msgtypestr[t] : "UNKNOWN-MESSAGES-TYPE")
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static const char *msgtypestr[NUM_MSG_TYPES] = {
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"UNKNOWN-MESSAGE-TYPE",
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"CONTROL-MESSAGE",
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"MANAGEMENT-MESSAGE"
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};
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#define NUM_FRAME_TYPES 4
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#define frametype2str(t) \
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((t < NUM_FRAME_TYPES) ? frametypestr[t] : "UNKNOWN-FRAMING-TYPE")
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static const char *frametypestr[NUM_FRAME_TYPES] = {
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"UNKNOWN-FRAMING-TYPE",
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"ASYNCHRONOUS",
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"SYNCHRONOUS",
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"EITHER"
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};
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#define NUM_BEARER_TYPES 4
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#define bearertype2str(t) \
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((t < NUM_BEARER_TYPES) ? bearertypestr[t] : "UNKNOWN-BEARER-TYPE")
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static const char *bearertypestr[NUM_BEARER_TYPES] = {
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"UNKNOWN-BEARER-TYPE",
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"ANALOG",
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"DIGITAL",
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"EITHER"
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};
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#define NUM_CNTRLRESULT_TYPES 6
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#define cntrlresulttype2str(t) \
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((t < NUM_CNTRLRESULT_TYPES) ? cntrlresulttypestr[t] : "UNKNOWN-CNTRLRESULT-TYPE")
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static const char *cntrlresulttypestr[NUM_CNTRLRESULT_TYPES] = {
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"UNKNOWN-CNTRLRESULT-TYPE",
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"SUCCESS",
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"GENERAL-ERROR",
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"COMMAND-CHANNEL-EXISTS",
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"NOT-AUTHORIZED",
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"VERSION-NOT-SUPPORTED"
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};
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#define NUM_ERROR_TYPES 7
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#define errortype2str(t) \
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((t < NUM_ERROR_TYPES) ? errortypestr[t] : "UNKNOWN-ERROR-TYPE")
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static const char *errortypestr[NUM_ERROR_TYPES] = {
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"NONE",
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"NOT-CONNECTED",
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"BAD-FORMAT",
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"BAD-VALUE",
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"NO-RESOURCE",
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"BAD-CALL-ID",
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"PAC-ERROR"
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};
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#define NUM_REASON_TYPES 4
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#define reasontype2str(t) \
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((t < NUM_REASON_TYPES) ? reasontypestr[t] : "UNKNOWN-REASON-TYPE")
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static const char *reasontypestr[NUM_REASON_TYPES] = {
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"UNKNOWN-REASON-TYPE",
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"NONE",
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"STOP-PROTOCOL",
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"STOP-LOCAL-SHUTDOWN"
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};
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#define NUM_STOPRESULT_TYPES 3
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#define stopresulttype2str(t) \
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((t < NUM_STOPRESULT_TYPES) ? stopresulttypestr[t] : "UNKNOWN-STOPRESULT-TYPE")
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static const char *stopresulttypestr[NUM_STOPRESULT_TYPES] = {
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"UNKNOWN-STOPRESULT-TYPE",
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"SUCCESS",
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"GENERAL-ERROR"
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};
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#define NUM_ECHORESULT_TYPES 3
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#define echoresulttype2str(t) \
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((t < NUM_ECHORESULT_TYPES) ? echoresulttypestr[t] : "UNKNOWN-ECHORESULT-TYPE")
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static const char *echoresulttypestr[NUM_ECHORESULT_TYPES] = {
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"UNKNOWN-ECHORESULT-TYPE",
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"SUCCESS",
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"GENERAL-ERROR"
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};
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#define NUM_OUTRESULT_TYPES 8
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#define outresulttype2str(t) \
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((t < NUM_OUTRESULT_TYPES) ? outresulttypestr[t] : "UNKNOWN-OUTRESULT-TYPE")
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static const char *outresulttypestr[NUM_OUTRESULT_TYPES] = {
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"UNKNOWN-OUTRESULT-TYPE",
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"CONNECTED",
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"GENERAL-ERROR",
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"NO-CARRIER",
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"BUSY",
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"NO-DIAL-TONE",
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"TIME-OUT",
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"DO-NOT-ACCEPT"
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};
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#define NUM_INRESULT_TYPES 4
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#define inresulttype2str(t) \
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((t < NUM_INRESULT_TYPES) ? inresulttypestr[t] : "UNKNOWN-INRESULT-TYPE")
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static const char *inresulttypestr[NUM_INRESULT_TYPES] = {
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"UNKNOWN-INRESULT-TYPE",
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"CONNECT",
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"GENERAL-ERROR",
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"DO-NOT-ACCEPT"
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};
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#define NUM_DISCRESULT_TYPES 5
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#define discresulttype2str(t) \
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((t < NUM_DISCRESULT_TYPES) ? discresulttypestr[t] : "UNKNOWN-DISCRESULT-TYPE")
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static const char *discresulttypestr[NUM_DISCRESULT_TYPES] = {
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"UNKNOWN-DISCRESULT-TYPE",
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"LOST-CARRIER",
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"GENERAL-ERROR",
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"ADMIN-SHUTDOWN",
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"REQUEST"
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};
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static void dissect_unknown(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_cntrl_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_cntrl_reply(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_stop_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_stop_reply(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_echo_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_echo_reply(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_out_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_out_reply(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_in_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_in_reply(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_in_connected(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_clear_req(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_disc_notify(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_error_notify(const u_char *, int, frame_data *, proto_tree *);
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static void dissect_set_link(const u_char *, int, frame_data *, proto_tree *);
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#define NUM_CNTRL_TYPES 16
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#define cntrltype2str(t) \
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((t < NUM_CNTRL_TYPES) ? strfuncs[t].str : "UNKNOWN-CONTROL-TYPE")
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static struct strfunc {
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const char * str;
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void (*func)(const u_char *, int, frame_data *, proto_tree *);
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} strfuncs[NUM_CNTRL_TYPES] = {
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{"UNKNOWN-CONTROL-TYPE", dissect_unknown },
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{"START-CONTROL-REQUEST", dissect_cntrl_req },
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{"START-CONTROL-REPLY", dissect_cntrl_reply },
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{"STOP-CONTROL-REQUEST", dissect_stop_req },
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{"STOP-CONTROL-REPLY", dissect_stop_reply },
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{"ECHO-REQUEST", dissect_echo_req },
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{"ECHO-REPLY", dissect_echo_reply },
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{"OUTGOING-CALL-REQUEST", dissect_out_req },
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{"OUTGOING-CALL-REPLY", dissect_out_reply },
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{"INCOMING-CALL-REQUEST", dissect_in_req },
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{"INCOMING-CALL-REPLY", dissect_in_reply },
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{"INCOMING-CALL-CONNECTED", dissect_in_connected },
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{"CLEAR-CALL-REQUEST", dissect_clear_req },
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{"DISCONNECT-NOTIFY", dissect_disc_notify },
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{"ERROR-NOTIFY", dissect_error_notify },
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{"SET-LINK", dissect_set_link }
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};
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struct pptp_hdr
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{
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guint16 len;
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guint16 type;
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guint32 cookie;
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guint16 cntrl_type;
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guint16 resv;
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};
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struct cntrl_req
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{
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guint8 major_ver;
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guint8 minor_ver;
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guint16 resv;
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guint32 frame;
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guint32 bearer;
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guint16 max_chan;
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guint16 firm_rev;
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guint8 host[64];
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guint8 vendor[64];
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};
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struct cntrl_reply
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{
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guint8 major_ver;
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guint8 minor_ver;
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guint8 result;
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guint8 error;
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guint32 frame;
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guint32 bearer;
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guint16 max_chan;
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guint16 firm_rev;
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guint8 host[64];
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guint8 vendor[64];
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};
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struct stop_req
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{
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guint8 reason;
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guint8 resv0;
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guint16 resv1;
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};
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struct stop_reply
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{
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guint8 result;
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guint8 error;
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guint16 resv;
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};
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struct echo_req
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{
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guint32 ident;
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};
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struct echo_reply
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{
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guint32 ident;
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guint8 result;
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guint8 error;
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guint16 resv;
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};
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struct out_req
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{
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guint16 call_id;
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guint16 call_serial;
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guint32 min_bps;
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guint32 max_bps;
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guint32 bearer;
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guint32 frame;
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guint16 win_size;
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guint16 delay;
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guint16 phone_len;
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guint16 resv;
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guint8 phone[64];
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guint8 subaddr[64];
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};
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struct out_reply
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{
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guint16 call_id;
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guint16 peer_id;
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guint8 result;
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guint8 error;
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guint16 cause;
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guint32 speed;
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guint16 win_size;
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guint16 delay;
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guint32 channel_id;
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};
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struct in_req
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{
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guint16 call_id;
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guint16 call_serial;
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guint32 bearer;
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guint32 channel_id;
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guint16 dialed_len;
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guint16 dialing_len;
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guint8 dialed[64];
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guint8 dialing[64];
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guint8 subaddr[64];
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};
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struct in_reply
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{
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guint16 call_id;
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guint16 peer_id;
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guint8 result;
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guint8 error;
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guint16 win_size;
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guint16 delay;
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guint16 resv;
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};
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struct in_connected
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{
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guint16 peer_id;
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guint16 resv;
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guint32 speed;
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guint16 win_size;
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guint16 delay;
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guint32 frame;
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};
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struct clear_req
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{
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guint16 call_id;
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guint16 resv;
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};
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struct disc_notify
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{
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guint16 call_id;
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guint8 result;
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guint8 error;
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guint16 cause;
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guint16 resv;
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guint8 stats[128];
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};
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struct error_notify
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{
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guint16 peer_id;
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guint16 resv;
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guint32 crc;
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guint32 frame;
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guint32 hardware;
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guint32 buffer;
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guint32 timeout;
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guint32 alignment;
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};
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struct set_link
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{
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guint16 peer_id;
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guint16 resv;
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guint32 send_acm;
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guint32 recv_acm;
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};
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static void
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dissect_pptp(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
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struct pptp_hdr * hdr = (struct pptp_hdr *)(pd + offset);
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guint16 len;
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guint16 cntrl_type;
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OLD_CHECK_DISPLAY_AS_DATA(proto_pptp, pd, offset, fd, tree);
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if (check_col(fd, COL_PROTOCOL))
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col_add_str(fd, COL_PROTOCOL, "PPTP");
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len = pntohs(&hdr->len);
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cntrl_type = pntohs(&hdr->cntrl_type);
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if (check_col(fd, COL_INFO))
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col_add_fstr(fd, COL_INFO, "%s", cntrltype2str(cntrl_type));
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if (IS_DATA_IN_FRAME(offset) && tree) {
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guint16 msg_type;
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guint32 cookie;
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proto_item * ti;
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proto_tree * pptp_tree;
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ti = proto_tree_add_item(tree, proto_pptp, NullTVB, offset, len, FALSE);
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pptp_tree = proto_item_add_subtree(ti, ett_pptp);
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proto_tree_add_text(pptp_tree, NullTVB, offset, sizeof(hdr->len),
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"Length: %u", len);
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offset += sizeof(hdr->len);
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msg_type = pntohs(&hdr->type);
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proto_tree_add_uint_format(pptp_tree, hf_pptp_message_type, NullTVB,
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offset, sizeof(hdr->type),
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msg_type,
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"Message type: %s (%u)",
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msgtype2str(msg_type), msg_type);
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offset += sizeof(hdr->type);
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cookie = pntohl(&hdr->cookie);
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if (cookie == MAGIC_COOKIE)
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proto_tree_add_text(pptp_tree, NullTVB, offset, sizeof(hdr->cookie),
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"Cookie: %#08x (correct)", cookie);
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else
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proto_tree_add_text(pptp_tree, NullTVB, offset, sizeof(hdr->cookie),
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"Cookie: %#08x (incorrect)", cookie);
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offset += sizeof(hdr->cookie);
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proto_tree_add_text(pptp_tree, NullTVB, offset, sizeof(hdr->cntrl_type),
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"Control type: %s (%u)", cntrltype2str(cntrl_type), cntrl_type);
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offset += sizeof(hdr->cntrl_type);
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proto_tree_add_text(pptp_tree, NullTVB, offset, sizeof(hdr->resv),
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"Reserved: %u", pntohs(&hdr->resv));
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offset += sizeof(hdr->resv);
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if (cntrl_type < NUM_CNTRL_TYPES)
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( *(strfuncs[cntrl_type].func))(pd, offset, fd, pptp_tree);
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else
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old_dissect_data(pd, offset, fd, pptp_tree);
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}
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}
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static void
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dissect_unknown(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
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old_dissect_data(pd, offset, fd, tree);
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}
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static void
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dissect_cntrl_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
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struct cntrl_req * hdr = (struct cntrl_req *)(pd + offset);
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guint32 frame;
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guint32 bearer;
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->major_ver) + sizeof(hdr->minor_ver),
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"Protocol version: %u.%u", hdr->major_ver, hdr->minor_ver );
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offset += sizeof(hdr->major_ver) + sizeof(hdr->minor_ver);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
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"Reserved: %u", pntohs(&hdr->resv));
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offset += sizeof(hdr->resv);
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frame = pntohl(&hdr->frame);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->frame),
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"Framing capabilities: %s (%u)", frametype2str(frame), frame);
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offset += sizeof(hdr->frame);
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bearer = pntohl(&hdr->bearer);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->bearer),
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"Bearer capabilities: %s (%u)", bearertype2str(bearer), bearer);
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offset += sizeof(hdr->bearer);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->max_chan),
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"Maximum channels: %u", pntohs(&hdr->max_chan));
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offset += sizeof(hdr->max_chan);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->firm_rev),
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"Firmware revision: %u", pntohs(&hdr->firm_rev));
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offset += sizeof(hdr->firm_rev);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->host),
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"Hostname: %s", hdr->host);
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offset += sizeof(hdr->host);
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proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->vendor),
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"Vendor: %s", hdr->vendor);
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}
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|
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static void
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dissect_cntrl_reply(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct cntrl_reply * hdr = (struct cntrl_reply *)(pd + offset);
|
|
guint32 frame;
|
|
guint32 bearer;
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->major_ver) + sizeof(hdr->minor_ver),
|
|
"Protocol version: %u.%u", hdr->major_ver, hdr->minor_ver );
|
|
offset += sizeof(hdr->major_ver) + sizeof(hdr->minor_ver);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", cntrlresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
frame = pntohl(&hdr->frame);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->frame),
|
|
"Framing capabilities: %s (%u)", frametype2str(frame), frame);
|
|
offset += sizeof(hdr->frame);
|
|
|
|
bearer = pntohl(&hdr->bearer);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->bearer),
|
|
"Bearer capabilities: %s (%u)", bearertype2str(bearer), bearer);
|
|
offset += sizeof(hdr->bearer);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->max_chan),
|
|
"Maximum channels: %u", pntohs(&hdr->max_chan));
|
|
offset += sizeof(hdr->max_chan);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->firm_rev),
|
|
"Firmware revision: %u", pntohs(&hdr->firm_rev));
|
|
offset += sizeof(hdr->firm_rev);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->host),
|
|
"Hostname: %s", hdr->host);
|
|
offset += sizeof(hdr->host);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->vendor),
|
|
"Vendor: %s", hdr->vendor);
|
|
}
|
|
|
|
static void
|
|
dissect_stop_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct stop_req * hdr = (struct stop_req *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->reason),
|
|
"Reason: %s (%u)", reasontype2str(hdr->reason), hdr->reason);
|
|
offset += sizeof(hdr->reason);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv0),
|
|
"Reserved: %u", hdr->resv0);
|
|
offset += sizeof(hdr->resv0);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv1),
|
|
"Reserved: %u", pntohs(&hdr->resv1));
|
|
offset += sizeof(hdr->resv1);
|
|
}
|
|
|
|
static void
|
|
dissect_stop_reply(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct stop_reply * hdr = (struct stop_reply *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", stopresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
}
|
|
|
|
static void
|
|
dissect_echo_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct echo_req * hdr = (struct echo_req *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->ident),
|
|
"Identifier: %u", pntohl(&hdr->ident));
|
|
offset += sizeof(hdr->ident);
|
|
}
|
|
|
|
static void
|
|
dissect_echo_reply(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct echo_reply * hdr = (struct echo_reply *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->ident),
|
|
"Identifier: %u", pntohl(&hdr->ident));
|
|
offset += sizeof(hdr->ident);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", echoresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
}
|
|
|
|
static void
|
|
dissect_out_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct out_req * hdr = (struct out_req *)(pd + offset);
|
|
guint32 bearer;
|
|
guint32 frame;
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_serial),
|
|
"Call Serial Number: %u", pntohs(&hdr->call_serial));
|
|
offset += sizeof(hdr->call_serial);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->min_bps),
|
|
"Minimum BPS: %u", pntohl(&hdr->min_bps));
|
|
offset += sizeof(hdr->min_bps);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->max_bps),
|
|
"Maximum BPS: %u", pntohl(&hdr->max_bps));
|
|
offset += sizeof(hdr->max_bps);
|
|
|
|
bearer = pntohl(&hdr->bearer);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->bearer),
|
|
"Bearer capabilities: %s (%u)", bearertype2str(bearer), bearer);
|
|
offset += sizeof(hdr->bearer);
|
|
|
|
frame = pntohl(&hdr->frame);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->frame),
|
|
"Framing capabilities: %s (%u)", frametype2str(frame), frame);
|
|
offset += sizeof(hdr->frame);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->win_size),
|
|
"Receive window size: %u", pntohs(&hdr->win_size));
|
|
offset += sizeof(hdr->win_size);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->delay),
|
|
"Processing delay: %u", pntohs(&hdr->delay));
|
|
offset += sizeof(hdr->delay);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->phone_len),
|
|
"Phone number length: %u", pntohs(&hdr->phone_len));
|
|
offset += sizeof(hdr->phone_len);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->phone),
|
|
"Phone number: %s", hdr->phone);
|
|
offset += sizeof(hdr->phone);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->subaddr),
|
|
"Subaddress: %s", hdr->subaddr);
|
|
offset += sizeof(hdr->subaddr);
|
|
}
|
|
|
|
static void
|
|
dissect_out_reply(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct out_reply * hdr = (struct out_reply *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->peer_id),
|
|
"Peer's call ID: %u", pntohs(&hdr->peer_id));
|
|
offset += sizeof(hdr->peer_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", outresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->cause),
|
|
"Cause code: %u", pntohs(&hdr->cause));
|
|
offset += sizeof(hdr->cause);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->speed),
|
|
"Connect speed: %u", pntohl(&hdr->speed));
|
|
offset += sizeof(hdr->speed);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->win_size),
|
|
"Receive window size: %u", pntohs(&hdr->win_size));
|
|
offset += sizeof(hdr->win_size);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->delay),
|
|
"Processing delay: %u", pntohs(&hdr->delay));
|
|
offset += sizeof(hdr->delay);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->channel_id),
|
|
"Physical channel ID: %u", pntohl(&hdr->channel_id));
|
|
offset += sizeof(hdr->channel_id);
|
|
}
|
|
|
|
|
|
static void
|
|
dissect_in_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct in_req * hdr = (struct in_req *)(pd + offset);
|
|
guint32 bearer;
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_serial),
|
|
"Call serial number: %u", pntohs(&hdr->call_serial));
|
|
offset += sizeof(hdr->call_serial);
|
|
|
|
bearer = pntohl(&hdr->bearer);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->bearer),
|
|
"Bearer capabilities: %s (%u)", bearertype2str(bearer), bearer);
|
|
offset += sizeof(hdr->bearer);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->channel_id),
|
|
"Physical channel ID: %u", pntohl(&hdr->channel_id));
|
|
offset += sizeof(hdr->channel_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->dialed_len),
|
|
"Dialed number length: %u", pntohs(&hdr->dialed_len));
|
|
offset += sizeof(hdr->dialed_len);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->dialing_len),
|
|
"Dialing number length: %u", pntohs(&hdr->dialing_len));
|
|
offset += sizeof(hdr->dialing_len);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->dialed),
|
|
"Dialed number: %s", hdr->dialed);
|
|
offset += sizeof(hdr->dialed);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->dialing),
|
|
"Dialing number: %s", hdr->dialing);
|
|
offset += sizeof(hdr->dialing);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->subaddr),
|
|
"Subaddress: %s", hdr->subaddr);
|
|
offset += sizeof(hdr->subaddr);
|
|
}
|
|
|
|
static void
|
|
dissect_in_reply(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct in_reply * hdr = (struct in_reply *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->peer_id),
|
|
"Peer's call ID: %u", pntohs(&hdr->peer_id));
|
|
offset += sizeof(hdr->peer_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", inresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->win_size),
|
|
"Receive window size: %u", pntohs(&hdr->win_size));
|
|
offset += sizeof(hdr->win_size);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->delay),
|
|
"Processing delay: %u", pntohs(&hdr->delay));
|
|
offset += sizeof(hdr->delay);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", hdr->resv);
|
|
offset += sizeof(hdr->resv);
|
|
}
|
|
|
|
static void
|
|
dissect_in_connected(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct in_connected * hdr = (struct in_connected *)(pd + offset);
|
|
guint32 frame;
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->peer_id),
|
|
"Peer's call ID: %u", pntohs(&hdr->peer_id));
|
|
offset += sizeof(hdr->peer_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->speed),
|
|
"Connect speed: %u", pntohl(&hdr->speed));
|
|
offset += sizeof(hdr->speed);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->win_size),
|
|
"Receive window size: %u", pntohs(&hdr->win_size));
|
|
offset += sizeof(hdr->win_size);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->delay),
|
|
"Processing delay: %u", pntohs(&hdr->delay));
|
|
offset += sizeof(hdr->delay);
|
|
|
|
frame = pntohl(&hdr->frame);
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->frame),
|
|
"Framing capabilities: %s (%u)", frametype2str(frame), frame);
|
|
offset += sizeof(hdr->frame);
|
|
}
|
|
|
|
static void
|
|
dissect_clear_req(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct clear_req * hdr = (struct clear_req *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
}
|
|
|
|
static void
|
|
dissect_disc_notify(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct disc_notify * hdr = (struct disc_notify *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->call_id),
|
|
"Call ID: %u", pntohs(&hdr->call_id));
|
|
offset += sizeof(hdr->call_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->result),
|
|
"Result: %s (%u)", discresulttype2str(hdr->result), hdr->result);
|
|
offset += sizeof(hdr->result);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->error),
|
|
"Error: %s (%u)", errortype2str(hdr->error), hdr->error);
|
|
offset += sizeof(hdr->error);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->cause),
|
|
"Cause code: %u", pntohs(&hdr->cause));
|
|
offset += sizeof(hdr->cause);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->stats),
|
|
"Call statistics: %s", hdr->stats);
|
|
offset += sizeof(hdr->stats);
|
|
}
|
|
|
|
static void
|
|
dissect_error_notify(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct error_notify * hdr = (struct error_notify *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->peer_id),
|
|
"Peer's call ID: %u", pntohs(&hdr->peer_id));
|
|
offset += sizeof(hdr->peer_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->crc),
|
|
"CRC errors: %u", pntohl(&hdr->crc));
|
|
offset += sizeof(hdr->crc);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->frame),
|
|
"Framing errors: %u", pntohl(&hdr->frame));
|
|
offset += sizeof(hdr->frame);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->hardware),
|
|
"Hardware overruns: %u", pntohl(&hdr->hardware));
|
|
offset += sizeof(hdr->hardware);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->buffer),
|
|
"Buffer overruns: %u", pntohl(&hdr->buffer));
|
|
offset += sizeof(hdr->buffer);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->timeout),
|
|
"Time-out errors: %u", pntohl(&hdr->timeout));
|
|
offset += sizeof(hdr->timeout);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->alignment),
|
|
"Alignment errors: %u", pntohl(&hdr->alignment));
|
|
offset += sizeof(hdr->alignment);
|
|
}
|
|
|
|
static void
|
|
dissect_set_link(const u_char *pd, int offset, frame_data *fd, proto_tree *tree) {
|
|
struct set_link * hdr = (struct set_link *)(pd + offset);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->peer_id),
|
|
"Peer's call ID: %u", pntohs(&hdr->peer_id));
|
|
offset += sizeof(hdr->peer_id);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->resv),
|
|
"Reserved: %u", pntohs(&hdr->resv));
|
|
offset += sizeof(hdr->resv);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->send_acm),
|
|
"Send ACCM: %#08x", pntohl(&hdr->send_acm));
|
|
offset += sizeof(hdr->send_acm);
|
|
|
|
proto_tree_add_text(tree, NullTVB, offset, sizeof(hdr->recv_acm),
|
|
"Recv ACCM: %#08x", pntohl(&hdr->recv_acm));
|
|
offset += sizeof(hdr->recv_acm);
|
|
}
|
|
|
|
void
|
|
proto_register_pptp(void)
|
|
{
|
|
static gint *ett[] = {
|
|
&ett_pptp,
|
|
};
|
|
|
|
static hf_register_info hf[] = {
|
|
{ &hf_pptp_message_type,
|
|
{ "Message Type", "pptp.type",
|
|
FT_UINT16, BASE_HEX, NULL, 0x0,
|
|
"PPTP message type" }}
|
|
};
|
|
|
|
proto_pptp = proto_register_protocol("Point-to-Point Tunnelling Protocol",
|
|
"pptp");
|
|
proto_register_field_array(proto_pptp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_pptp(void)
|
|
{
|
|
old_dissector_add("tcp.port", TCP_PORT_PPTP, dissect_pptp);
|
|
}
|