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wireshark/epan/dissectors/packet-tuxedo.c
Michael Mann 268841f3e0 Combine Decode As and port preferences for tcp.port dissector table. 
This patch introduces new APIs to allow dissectors to have a preference for
a (TCP) port, but the underlying data is actually part of Decode As functionality.
For now the APIs are intentionally separate from the regular APIs that register a
dissector within a dissector table.  It may be possible to eventually combine the
two so that all dissectors that register with a dissector table have an opportunity
to "automatically" have a preference to adjust the "table value" through the
preferences dialog.

The tcp.port dissector table was used as the guinea pig.  This will eventually be
expanded to other dissector tables as well (most notably UDP ports).  Some
dissectors that "shared" a TCP/UDP port preference were also converted. It also
removed the need for some preference callback functions (mostly when the callback
function was the proto_reg_handoff function) so there is cleanup around that.

Dissectors that has a port preference whose default was 0 were switched to using
the dissector_add_for_decode_as_with_preference API rather than dissector_add_uint_with_preference

Also added comments for TCP ports used that aren't IANA registered.

Change-Id: I99604f95d426ad345f4b494598d94178b886eb67
Reviewed-on: https://code.wireshark.org/review/17724
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-10-08 02:44:53 +00:00

205 lines
6.4 KiB
C
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/* packet-tuxedo.c
* Routines for BEA Tuxedo ATMI protocol
*
* metatech <metatech@flashmail.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/conversation.h>
void proto_register_tuxedo(void);
void proto_reg_handoff_tuxedo(void);
static int proto_tuxedo = -1;
static int hf_tuxedo_magic = -1;
static int hf_tuxedo_opcode = -1;
static gint ett_tuxedo = -1;
static dissector_handle_t tuxedo_handle;
#define TUXEDO_MAGIC 0x91039858
#define TUXEDO_SMAGIC 0x73903842
#define TUXEDO_ATMI_CALL 1
#define TUXEDO_ATMI_REPLY 2
#define TUXEDO_ATMI_FAILURE 3
#define TUXEDO_ATMI_CONNECT 4
#define TUXEDO_ATMI_DATA 5
#define TUXEDO_ATMI_DISCON 6
#define TUXEDO_ATMI_PREPARE 7
#define TUXEDO_ATMI_READY 8
#define TUXEDO_ATMI_COMMIT 9
#define TUXEDO_ATMI_DONE 10
#define TUXEDO_ATMI_COMPLETE 11
#define TUXEDO_ATMI_ROLLBACK 12
#define TUXEDO_ATMI_HEURISTIC 13
#define TUXEDO_ATMI_PRE_NW_ACALL1 14
#define TUXEDO_ATMI_PRE_NW_ACALL1_RPLY 15
#define TUXEDO_ATMI_PRE_NW_ACALL2 16
#define TUXEDO_ATMI_PRE_NW_ACALL2_RPLY 17
#define TUXEDO_ATMI_PRE_NW_ACALL3 18
#define TUXEDO_ATMI_PRE_NW_ACALL3_RPLY 19
#define TUXEDO_ATMI_PRE_NW_LLE 20
#define TUXEDO_ATMI_PRE_NW_LLE_RPLY 21
#define TUXEDO_ATMI_SEC_EXCHG_RQST 22
#define TUXEDO_ATMI_SEC_EXCHG_RPLY 23
#define TUXEDO_ATMI_SEC_NW_ACALL3 24
#define TUXEDO_ATMI_SEC_NW_ACALL3_RPLY 25
static const value_string tuxedo_opcode_vals[] = {
{ TUXEDO_ATMI_CALL, "CALL" },
{ TUXEDO_ATMI_REPLY, "REPLY" },
{ TUXEDO_ATMI_FAILURE, "FAILURE" },
{ TUXEDO_ATMI_CONNECT, "CONNECT" },
{ TUXEDO_ATMI_DATA, "DATA" },
{ TUXEDO_ATMI_DISCON, "DISCON" },
{ TUXEDO_ATMI_PREPARE, "PREPARE" },
{ TUXEDO_ATMI_READY, "READY" },
{ TUXEDO_ATMI_COMMIT, "COMMIT" },
{ TUXEDO_ATMI_DONE, "DONE" },
{ TUXEDO_ATMI_COMPLETE, "COMPLETE" },
{ TUXEDO_ATMI_ROLLBACK, "ROLLBACK" },
{ TUXEDO_ATMI_HEURISTIC, "HEURISTIC" },
{ TUXEDO_ATMI_PRE_NW_ACALL1, "ACALL1" },
{ TUXEDO_ATMI_PRE_NW_ACALL1_RPLY, "ACALL1_REPLY" },
{ TUXEDO_ATMI_PRE_NW_ACALL2, "ACALL2" },
{ TUXEDO_ATMI_PRE_NW_ACALL2_RPLY, "ACALL2_REPLY" },
{ TUXEDO_ATMI_PRE_NW_ACALL3, "ACALL3" },
{ TUXEDO_ATMI_PRE_NW_ACALL3_RPLY, "ACALL3_REPLY" },
{ TUXEDO_ATMI_PRE_NW_LLE, "LLE" },
{ TUXEDO_ATMI_PRE_NW_LLE_RPLY, "LLE_REPLY" },
{ TUXEDO_ATMI_SEC_EXCHG_RQST, "SEC_EXCHANGE" },
{ TUXEDO_ATMI_SEC_EXCHG_RPLY, "SEC_EXCHANGE_REPLY" },
{ TUXEDO_ATMI_SEC_NW_ACALL3, "SEC_ACALL3" },
{ TUXEDO_ATMI_SEC_NW_ACALL3_RPLY, "SEC_ACALL3_REPLY" },
{ 0, NULL }
};
static int
dissect_tuxedo(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *tuxedoroot_tree = NULL;
proto_item *ti;
guint32 magic;
guint32 opcode;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "TUXEDO");
if (tvb_reported_length(tvb) >= 8)
{
magic = tvb_get_ntohl(tvb, 0);
if (magic == TUXEDO_MAGIC || magic == TUXEDO_SMAGIC)
{
opcode = tvb_get_ntohl(tvb, 4);
col_add_str(pinfo->cinfo, COL_INFO, val_to_str(opcode, tuxedo_opcode_vals, "Unknown (0x%02x)"));
if (tree)
{
ti = proto_tree_add_item(tree, proto_tuxedo, tvb, 0, -1, ENC_NA);
tuxedoroot_tree = proto_item_add_subtree(ti, ett_tuxedo);
proto_tree_add_item(tuxedoroot_tree, hf_tuxedo_magic, tvb, 0, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(tuxedoroot_tree, hf_tuxedo_opcode, tvb, 4, 4, ENC_BIG_ENDIAN);
}
}
else
{
/* This packet is a continuation */
col_set_str(pinfo->cinfo, COL_INFO, "Continuation");
if (tree)
{
proto_tree_add_item(tree, proto_tuxedo, tvb, 0, -1, ENC_NA);
}
}
}
return tvb_captured_length(tvb);
}
static gboolean
dissect_tuxedo_heur(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void *data _U_)
{
if (tvb_captured_length(tvb) >= 8)
{
guint32 magic;
magic = tvb_get_ntohl(tvb, 0);
if (magic == TUXEDO_MAGIC || magic == TUXEDO_SMAGIC)
{
/* Register this dissector for this conversation */
conversation_t *conversation = NULL;
conversation = find_or_create_conversation(pinfo);
conversation_set_dissector(conversation, tuxedo_handle);
dissect_tuxedo(tvb, pinfo, tree, data);
return TRUE;
}
}
return FALSE;
}
void
proto_register_tuxedo(void)
{
static hf_register_info hf[] = {
{ &hf_tuxedo_magic,
{ "Magic", "tuxedo.magic", FT_UINT32, BASE_HEX, NULL, 0x0, "TUXEDO magic", HFILL }},
{ &hf_tuxedo_opcode,
{ "Opcode", "tuxedo.opcode", FT_UINT32, BASE_HEX, VALS(tuxedo_opcode_vals), 0x0, "TUXEDO opcode", HFILL }}
};
static gint *ett[] = {
&ett_tuxedo,
};
proto_tuxedo = proto_register_protocol("BEA Tuxedo", "TUXEDO", "tuxedo");
proto_register_field_array(proto_tuxedo, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
void
proto_reg_handoff_tuxedo(void)
{
tuxedo_handle = create_dissector_handle(dissect_tuxedo, proto_tuxedo);
dissector_add_for_decode_as_with_preference("tcp.port", tuxedo_handle);
heur_dissector_add("tcp", dissect_tuxedo_heur, "Tuxedo over TCP", "tuxedo_tcp", proto_tuxedo, HEURISTIC_ENABLE);
}
/*
* 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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