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wireshark/epan/dissectors/packet-nt-tpcp.c
Michael Mann 2eb7b05b8c Convert most UDP dissectors to use "auto" preferences. 
Similar to the "tcp.port" changes in I99604f95d426ad345f4b494598d94178b886eb67,
convert dissectors that use "udp.port".

More cleanup done on dissectors that use both TCP and UDP dissector
tables, so that less preference callbacks exist.

Change-Id: If07be9b9e850c244336a7069599cd554ce312dd3
Reviewed-on: https://code.wireshark.org/review/18120
Petri-Dish: Michael Mann <mmann78@netscape.net>
Tested-by: Petri Dish Buildbot <buildbot-no-reply@wireshark.org>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-10-13 02:51:18 +00:00

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7.6 KiB
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/* packet-nt-tpcp.c
* Routines for Transparent Proxy Cache Protocol packet disassembly
* (c) Copyright Giles Scott <giles.scott1 [AT] btinternet.com>
*
* 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.
*/
#include "config.h"
#include <epan/packet.h>
#include <epan/addr_resolv.h> /* this is for get_hostname and udp_port_to_display */
void proto_register_tpcp(void);
void proto_reg_handoff_tpcp(void);
#define UDP_PORT_TPCP 3121 /* Not IANA registered */
/* TPCP version1/2 PDU format */
typedef struct _tpcppdu_t {
guint8 version; /* PDU version 1 */
guint8 type; /* PDU type: 1=request, 2=reply, 3=add filter, 4=rem filter */
/* Version 2 adds 5=add session 6= remove session */
guint16 flags; /* 0x0001: 0=UDP, 1=TCP*/
/* 0x0002: 0=NONE, 1=DONT_REDIRECT */
/* 0x0004: 0=NONE, 1=Xon */
/* 0x0008: 0=NONE, 1=Xoff */
guint16 id; /* request/response identification or TTL */
guint16 cport; /* client UDP or TCP port number */
guint32 caddr; /* client IPv4 address */
guint32 saddr; /* server IPV4 address */
/* tpcp version 2 only*/
guint32 vaddr; /* Virtual Server IPv4 address */
guint32 rasaddr; /* RAS server IPv4 address */
guint32 signature; /* 0x74706370 - tpcp */
} tpcpdu_t;
static const value_string type_vals[] = {
{ 1, "Request" },
{ 2, "Reply" },
{ 3, "Add Filter" },
{ 4, "Remove Filter" },
/* 5 and 6 are for version 2 only */
{ 5, "Add Session" },
{ 6, "Remove Session" },
{ 0, NULL }
};
/* TPCP Flags */
#define TF_TPCP_UDPTCP 0x0001
#define TF_TPCP_DONTREDIRECT 0x0002
#define TF_TPCP_XON 0x0004
#define TF_TPCP_XOFF 0x0008
/* Version info */
#define TPCP_VER_1 1
#define TPCP_VER_2 2
#define TPCP_VER_1_LENGTH 16
#define TPCP_VER_2_LENGTH 28
/* things we can do filters on */
static int hf_tpcp_version = -1;
static int hf_tpcp_type = -1;
static int hf_tpcp_flags = -1;
static int hf_tpcp_flags_tcp = -1;
static int hf_tpcp_flags_redir = -1;
static int hf_tpcp_flags_xon = -1;
static int hf_tpcp_flags_xoff = -1;
static int hf_tpcp_id = -1;
static int hf_tpcp_cport = -1;
static int hf_tpcp_caddr = -1;
static int hf_tpcp_saddr = -1;
static int hf_tpcp_vaddr = -1;
static int hf_tpcp_rasaddr = -1;
static int hf_tpcp_signature = -1;
static int proto_tpcp = -1;
static gint ett_tpcp = -1;
static gint ett_tpcp_flags = -1;
static int
dissect_tpcp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *tpcp_tree = NULL;
proto_item *ti;
guint8 version, type;
guint16 id, cport;
static const int * tpcp_flags[] = {
&hf_tpcp_flags_tcp,
&hf_tpcp_flags_redir,
&hf_tpcp_flags_xon,
&hf_tpcp_flags_xoff,
NULL
};
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TPCP");
col_clear(pinfo->cinfo, COL_INFO);
/* need to find out which version!! */
version = tvb_get_guint8(tvb, 0);
if ((version != TPCP_VER_1) && (version != TPCP_VER_2)) {
/* Not us */
return 0;
}
ti = proto_tree_add_protocol_format(tree, proto_tpcp, tvb, 0, -1,
"Alteon WebSystems - Transparent Proxy Cache Protocol");
tpcp_tree = proto_item_add_subtree(ti, ett_tpcp);
proto_tree_add_item(tpcp_tree, hf_tpcp_version, tvb, 0, 1, ENC_BIG_ENDIAN);
type = tvb_get_guint8(tvb, 1);
proto_tree_add_item(tpcp_tree, hf_tpcp_type, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_bitmask(tpcp_tree, tvb, 2, hf_tpcp_flags, ett_tpcp_flags, tpcp_flags, ENC_NA);
id = tvb_get_ntohs(tvb, 4);
proto_tree_add_item(tpcp_tree, hf_tpcp_id, tvb, 4, 2, ENC_BIG_ENDIAN);
cport = tvb_get_ntohs(tvb, 6);
proto_tree_add_uint_format_value(tpcp_tree, hf_tpcp_cport, tvb, 6, 2, cport,
"%s", udp_port_to_display(wmem_packet_scope(), cport));
proto_tree_add_item(tpcp_tree, hf_tpcp_caddr, tvb, 8, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tpcp_tree, hf_tpcp_saddr, tvb, 12, 4, ENC_BIG_ENDIAN);
if (version == TPCP_VER_2) {
proto_tree_add_item(tpcp_tree, hf_tpcp_vaddr, tvb, 16, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tpcp_tree, hf_tpcp_rasaddr, tvb, 20, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tpcp_tree, hf_tpcp_signature, tvb, 24, 4, ENC_BIG_ENDIAN);
}
col_add_fstr(pinfo->cinfo, COL_INFO,"%s id %d CPort %s CIP %s SIP %s",
val_to_str_const(type, type_vals, "Unknown"),
id,
udp_port_to_display(wmem_packet_scope(), cport),
tvb_ip_to_str(tvb, 8),
tvb_ip_to_str(tvb, 12));
if (version == TPCP_VER_1)
return TPCP_VER_1_LENGTH;
return TPCP_VER_2_LENGTH;
}
void
proto_register_tpcp(void)
{
static hf_register_info hf[] = {
{ &hf_tpcp_version,
{ "Version", "tpcp.version", FT_UINT8, BASE_DEC, NULL, 0x0,
"TPCP version", HFILL }},
{ &hf_tpcp_type,
{ "Type", "tpcp.type", FT_UINT8, BASE_DEC, VALS(type_vals), 0x0,
"PDU type", HFILL }},
{ &hf_tpcp_flags,
{ "Flags", "tpcp.flags", FT_UINT16, BASE_HEX, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_flags_tcp,
{ "UDP/TCP", "tpcp.flags.tcp", FT_BOOLEAN, 8, TFS(&tfs_set_notset), TF_TPCP_UDPTCP,
"Protocol type", HFILL }},
{ &hf_tpcp_flags_redir,
{ "No Redirect", "tpcp.flags.redir", FT_BOOLEAN, 8, TFS(&tfs_set_notset), TF_TPCP_DONTREDIRECT,
"Don't redirect client", HFILL }},
{ &hf_tpcp_flags_xon,
{ "XON", "tpcp.flags.xon", FT_BOOLEAN, 8, TFS(&tfs_set_notset), TF_TPCP_XON,
NULL, HFILL }},
{ &hf_tpcp_flags_xoff,
{ "XOFF", "tpcp.flags.xoff", FT_BOOLEAN, 8, TFS(&tfs_set_notset), TF_TPCP_XOFF,
NULL, HFILL }},
{ &hf_tpcp_id,
{ "Client indent", "tpcp.cid", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_cport,
{ "Client Source Port", "tpcp.cport", FT_UINT16, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_caddr,
{ "Client Source IP address", "tpcp.caddr", FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_saddr,
{ "Server IP address", "tpcp.saddr", FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_vaddr,
{ "Virtual Server IP address", "tpcp.vaddr", FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_rasaddr,
{ "RAS server IP address", "tpcp.rasaddr", FT_IPv4, BASE_NONE, NULL, 0x0,
NULL, HFILL }},
{ &hf_tpcp_signature,
{ "Signature", "tpcp.signature", FT_UINT32, BASE_DEC, NULL, 0x0,
NULL, HFILL }},
};
static gint *ett[] = {
&ett_tpcp,
&ett_tpcp_flags,
};
proto_tpcp = proto_register_protocol("Alteon - Transparent Proxy Cache Protocol", "TPCP", "tpcp");
proto_register_field_array(proto_tpcp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_tpcp(void)
{
dissector_handle_t tpcp_handle;
tpcp_handle = create_dissector_handle(dissect_tpcp, proto_tpcp);
dissector_add_uint_with_preference("udp.port", UDP_PORT_TPCP, tpcp_handle);
}
/*
* 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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