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wireshark/epan/dissectors/packet-rmp.c
Michael Mann 1e60d63c8c Create call_data_dissector() to call data dissector. 
This saves many dissectors the need to find the data dissector and store a handle to it.

There were also some that were finding it, but not using it.
For others this was the only reason for their handoff function, so it could be eliminated.

Change-Id: I5d3f951ee1daa3d30c060d21bd12bbc881a8027b
Reviewed-on: https://code.wireshark.org/review/14530
Petri-Dish: Michael Mann <mmann78@netscape.net>
Reviewed-by: Michael Mann <mmann78@netscape.net>
2016-03-20 17:38:03 +00:00

270 lines
8.4 KiB
C
Raw Blame History

/* packet-rmp.c
* Routines for HP remote management protocol
* Gilbert Ramirez <jochen@scram.de>
*
* 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 "packet-hpext.h"
void proto_register_rmp(void);
void proto_reg_handoff_rmp(void);
static int proto_rmp = -1;
static int hf_rmp_type = -1;
static int hf_rmp_retcode = -1;
static int hf_rmp_seqnum = -1;
static int hf_rmp_sessionid = -1;
static int hf_rmp_version = -1;
static int hf_rmp_machtype = -1;
static int hf_rmp_filename = -1;
static int hf_rmp_offset = -1;
static int hf_rmp_size = -1;
static int hf_rmp_reserved = -1;
static gint ett_rmp = -1;
/*
* Possible values for "rmp_type" fields.
*/
#define RMP_BOOT_REQ 1 /* boot request packet */
#define RMP_BOOT_REPL 129 /* boot reply packet */
#define RMP_READ_REQ 2 /* read request packet */
#define RMP_READ_REPL 130 /* read reply packet */
#define RMP_BOOT_DONE 3 /* boot complete packet */
/*
* RMP error codes
*/
#define RMP_E_OKAY 0
#define RMP_E_EOF 2 /* read reply: returned end of file */
#define RMP_E_ABORT 3 /* abort operation */
#define RMP_E_BUSY 4 /* boot reply: server busy */
#define RMP_E_TIMEOUT 5 /* lengthen time out (not implemented) */
#define RMP_E_NOFILE 16 /* boot reply: file does not exist */
#define RMP_E_OPENFILE 17 /* boot reply: file open failed */
#define RMP_E_NODFLT 18 /* boot reply: default file does not exist */
#define RMP_E_OPENDFLT 19 /* boot reply: default file open failed */
#define RMP_E_BADSID 25 /* read reply: bad session ID */
#define RMP_E_BADPACKET 27 /* Bad packet detected */
const value_string rmp_type_vals[] = {
{ RMP_BOOT_REQ, "Boot Request" },
{ RMP_BOOT_REPL, "Boot Reply" },
{ RMP_READ_REQ, "Read Request" },
{ RMP_READ_REPL, "Read Reply" },
{ RMP_BOOT_DONE, "Boot Done" },
{ 0x00, NULL }
};
const value_string rmp_error_vals[] = {
{ RMP_E_OKAY, "OK" },
{ RMP_E_EOF, "End Of File" },
{ RMP_E_ABORT, "Abort Operation" },
{ RMP_E_BUSY, "Server Busy" },
{ RMP_E_TIMEOUT, "Lengthen Time Out" },
{ RMP_E_NOFILE, "File Does Not Exist" },
{ RMP_E_OPENFILE, "File Open Failed" },
{ RMP_E_NODFLT, "Default File Does Not Exist" },
{ RMP_E_OPENDFLT, "Default File Open Failed" },
{ RMP_E_BADSID, "Bad Session Id" },
{ RMP_E_OPENDFLT, "Bad Packet Detected" },
{ 0x00, NULL }
};
static int
dissect_rmp(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
{
proto_tree *rmp_tree = NULL;
proto_item *ti = NULL;
guint8 type, len;
col_set_str(pinfo->cinfo, COL_PROTOCOL, "RMP");
col_clear(pinfo->cinfo, COL_INFO);
type = tvb_get_guint8(tvb, 0);
col_set_str(pinfo->cinfo, COL_INFO,
val_to_str_const(type, rmp_type_vals, "Unknown Type"));
ti = proto_tree_add_item(tree, proto_rmp, tvb, 0, -1, ENC_NA);
rmp_tree = proto_item_add_subtree(ti, ett_rmp);
proto_tree_add_uint(rmp_tree, hf_rmp_type, tvb, 0, 1, type);
switch (type) {
case RMP_BOOT_REQ:
proto_tree_add_item(rmp_tree,
hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_machtype, tvb, 10, 20, ENC_ASCII|ENC_NA);
/* The remaining fields are optional */
if(!tvb_offset_exists(tvb, 30))
return 30;
len = tvb_get_guint8(tvb, 30);
proto_tree_add_item(rmp_tree,
hf_rmp_filename, tvb, 30, 1, ENC_ASCII|ENC_BIG_ENDIAN);
if(tvb_offset_exists(tvb, len+31))
call_data_dissector(tvb_new_subset_remaining(tvb, len+31),
pinfo, tree);
break;
case RMP_BOOT_REPL:
proto_tree_add_item(rmp_tree,
hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_seqnum, tvb, 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_version, tvb, 8, 2, ENC_BIG_ENDIAN);
len = tvb_get_guint8(tvb, 10);
proto_tree_add_item(rmp_tree,
hf_rmp_filename, tvb, 10, 1, ENC_ASCII|ENC_BIG_ENDIAN);
if(tvb_offset_exists(tvb, len+11))
call_data_dissector(tvb_new_subset_remaining(tvb, len+11),
pinfo, tree);
break;
case RMP_READ_REQ:
proto_tree_add_item(rmp_tree,
hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_size, tvb, 8, 2, ENC_BIG_ENDIAN);
if(tvb_offset_exists(tvb, 10))
call_data_dissector(tvb_new_subset_remaining(tvb, 10),
pinfo, tree);
break;
case RMP_READ_REPL:
proto_tree_add_item(rmp_tree,
hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_offset, tvb, 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
call_data_dissector(tvb_new_subset_remaining(tvb,
8), pinfo, rmp_tree);
break;
case RMP_BOOT_DONE:
proto_tree_add_item(rmp_tree,
hf_rmp_retcode, tvb, 1, 1, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_reserved, tvb, 2, 4, ENC_BIG_ENDIAN);
proto_tree_add_item(rmp_tree,
hf_rmp_sessionid, tvb, 6, 2, ENC_BIG_ENDIAN);
if(tvb_offset_exists(tvb, 8))
call_data_dissector(tvb_new_subset_remaining(tvb, 6),
pinfo, tree);
break;
default:
call_data_dissector(tvb_new_subset_remaining(tvb, 1), pinfo, tree);
}
return tvb_captured_length(tvb);
}
void
proto_register_rmp(void)
{
static hf_register_info hf[] = {
{ &hf_rmp_type,
{ "Type", "rmp.type", FT_UINT8, BASE_HEX,
VALS(rmp_type_vals), 0x0, NULL, HFILL }},
{ &hf_rmp_retcode,
{ "Returncode", "rmp.retcode", FT_UINT8, BASE_HEX,
VALS(rmp_error_vals), 0x0, NULL, HFILL }},
{ &hf_rmp_seqnum,
{ "Sequence Number", "rmp.seqnum", FT_UINT32, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_sessionid,
{ "Session ID", "rmp.sessionid", FT_UINT16, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_version,
{ "Version", "rmp.version", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_machtype,
{ "Machine Type", "rmp.machtype", FT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_filename,
{ "Filename", "rmp.filename", FT_UINT_STRING, BASE_NONE,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_offset,
{ "Offset", "rmp.offset", FT_UINT32, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_size,
{ "Size", "rmp.size", FT_UINT16, BASE_DEC,
NULL, 0x0, NULL, HFILL }},
{ &hf_rmp_reserved,
{ "Reserved", "rmp.reserved", FT_UINT32, BASE_HEX,
NULL, 0x0, NULL, HFILL }},
};
static gint *ett[] = {
&ett_rmp,
};
proto_rmp = proto_register_protocol(
"HP Remote Maintenance Protocol", "RMP", "rmp");
proto_register_field_array(proto_rmp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
register_dissector("rmp", dissect_rmp, proto_rmp);
}
void
proto_reg_handoff_rmp(void)
{
dissector_handle_t rmp_handle;
rmp_handle = find_dissector("rmp");
dissector_add_uint("hpext.dxsap", HPEXT_DXSAP, rmp_handle);
dissector_add_uint("hpext.dxsap", HPEXT_SXSAP, rmp_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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