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wireshark/plugins/docsis/packet-macmgmt.c
Lars Roland 00273300e7 Preparations for dropping the old plugin api. 
Introduce a new init routine for plugins, 
which does not take the plugin api table as an 
argument and allows etheral to distinguish 
between plugins using the old and the new api.

Update README.plugins accordingly

Change all g_warnings() in epan/plugins.c to report_failue().
On windows we do not have a log console open while
loading the plugins, because a log console cannot be opened before the prefs have been read. Thus g_warnings()
does not work for reporting problems with plugins.

svn path=/trunk/; revision=13596
2005-03-05 06:28:10 +00:00

296 lines
8.9 KiB
C
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/* packet-macmgmt.c
* Routines for docsis Mac Management Header dissection
* Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
*
* $Id$
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@ethereal.com>
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#ifdef HAVE_CONFIG_H
# include "config.h"
#endif
#include "moduleinfo.h"
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#define MGT_SYNC 1
#define MGT_UCD 2
#define MGT_MAP 3
#define MGT_RNG_REQ 4
#define MGT_RNG_RSP 5
#define MGT_REG_REQ 6
#define MGT_REG_RSP 7
#define MGT_UCC_REQ 8
#define MGT_UCC_RSP 9
#define MGT_TRI_TCD 10
#define MGT_TRI_TSI 11
#define MGT_BPKM_REQ 12
#define MGT_BPKM_RSP 13
#define MGT_REG_ACK 14
#define MGT_DSA_REQ 15
#define MGT_DSA_RSP 16
#define MGT_DSA_ACK 17
#define MGT_DSC_REQ 18
#define MGT_DSC_RSP 19
#define MGT_DSC_ACK 20
#define MGT_DSD_REQ 21
#define MGT_DSD_RSP 22
#define MGT_DCC_REQ 23
#define MGT_DCC_RSP 24
#define MGT_DCC_ACK 25
#define MGT_DCI_REQ 26
#define MGT_DCI_RSP 27
#define MGT_UP_DIS 28
#define MGT_TYPE29UCD 29
/* Initialize the protocol and registered fields */
static int proto_docsis_mgmt = -1;
static int hf_docsis_mgt_hdr = -1;
static int hf_docsis_mgt_dst_addr = -1;
static int hf_docsis_mgt_src_addr = -1;
static int hf_docsis_mgt_msg_len = -1;
static int hf_docsis_mgt_dsap = -1;
static int hf_docsis_mgt_ssap = -1;
static int hf_docsis_mgt_control = -1;
static int hf_docsis_mgt_version = -1;
static int hf_docsis_mgt_type = -1;
static int hf_docsis_mgt_rsvd = -1;
static dissector_table_t docsis_mgmt_dissector_table;
static dissector_handle_t data_handle;
/* Initialize the subtree pointers */
static gint ett_docsis_mgmt = -1;
static gint ett_mgmt_pay = -1;
static const value_string mgmt_type_vals[] = {
{MGT_SYNC, "Timing Synchronisation"},
{MGT_UCD, "Upstream Channel Descriptor"},
{MGT_TYPE29UCD, "Upstream Channel Descriptor Type 29"},
{MGT_MAP, "Upstream Bandwidth Allocation"},
{MGT_RNG_REQ, "Ranging Request"},
{MGT_RNG_RSP, "Ranging Response"},
{MGT_REG_REQ, "Registration Request"},
{MGT_REG_RSP, "Registration Response"},
{MGT_UCC_REQ, "Upstream Channel Change Request"},
{MGT_UCC_RSP, "Upstream Channel Change Response"},
{MGT_TRI_TCD, "Telephony Channel Descriptor"},
{MGT_TRI_TSI, "Termination System Information"},
{MGT_BPKM_REQ, "Privacy Key Management Request"},
{MGT_BPKM_RSP, "Privacy Key Management Response"},
{MGT_REG_ACK, "Registration Acknowledge"},
{MGT_DSA_REQ, "Dynamic Service Addition Request"},
{MGT_DSA_RSP, "Dynamic Service Addition Response"},
{MGT_DSA_ACK, "Dynamic Service Addition Acknowledge"},
{MGT_DSC_REQ, "Dynamic Service Change Request"},
{MGT_DSC_RSP, "Dynamic Service Change Response"},
{MGT_DSC_ACK, "Dynamic Service Change Acknowledge"},
{MGT_DSD_REQ, "Dynamic Service Delete Request"},
{MGT_DSD_RSP, "Dynamic Service Delete Response"},
{MGT_DCC_REQ, "Dynamic Channel Change Request"},
{MGT_DCC_RSP, "Dynamic Channel Change Response"},
{MGT_DCC_ACK, "Dynamic Channel Change Acknowledge"},
{MGT_DCI_REQ, "Device Class Identification Request"},
{MGT_DCI_RSP, "Device Class Identification Response"},
{MGT_UP_DIS, "Upstream Channel Disable"},
{0, NULL}
};
/* Code to actually dissect the packets */
static void
dissect_macmgmt (tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
{
const guint8 *src, *dst;
guint16 msg_len;
proto_item *mgt_hdr_it;
proto_tree *mgt_hdr_tree;
tvbuff_t *payload_tvb;
guint8 type;
if (check_col (pinfo->cinfo, COL_PROTOCOL))
col_set_str (pinfo->cinfo, COL_PROTOCOL, "DOCSIS MGMT");
if (check_col (pinfo->cinfo, COL_INFO))
col_clear (pinfo->cinfo, COL_INFO);
src = tvb_get_ptr (tvb, 6, 6);
dst = tvb_get_ptr (tvb, 0, 6);
SET_ADDRESS (&pinfo->dl_src, AT_ETHER, 6, src);
SET_ADDRESS (&pinfo->src, AT_ETHER, 6, src);
SET_ADDRESS (&pinfo->dl_dst, AT_ETHER, 6, dst);
SET_ADDRESS (&pinfo->dst, AT_ETHER, 6, dst);
if (tree)
{
mgt_hdr_it =
proto_tree_add_protocol_format (tree, proto_docsis_mgmt, tvb, 0, 20,
"Mac Management");
mgt_hdr_tree = proto_item_add_subtree (mgt_hdr_it, ett_docsis_mgmt);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_dst_addr, tvb, 0, 6,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_src_addr, tvb, 6, 6,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_msg_len, tvb, 12, 2,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_dsap, tvb, 14, 1,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_ssap, tvb, 15, 1,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_control, tvb, 16, 1,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_version, tvb, 17, 1,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_type, tvb, 18, 1,
FALSE);
proto_tree_add_item (mgt_hdr_tree, hf_docsis_mgt_rsvd, tvb, 19, 1,
FALSE);
}
/* Code to Call subdissector */
/* sub-dissectors are based on the type field */
type = tvb_get_guint8 (tvb, 18);
msg_len = tvb_get_ntohs (tvb, 12);
payload_tvb = tvb_new_subset (tvb, 20, msg_len - 6, msg_len - 6);
if (dissector_try_port
(docsis_mgmt_dissector_table, type, payload_tvb, pinfo, tree))
return;
else
call_dissector (data_handle, payload_tvb, pinfo, tree);
}
/* Register the protocol with Ethereal */
/* this format is require because a script is used to build the C function
that calls all the protocol registration.
*/
void
proto_register_docsis_mgmt (void)
{
/* Setup list of header fields See Section 1.6.1 for details*/
static hf_register_info hf[] = {
{&hf_docsis_mgt_hdr,
{"Mac Management Header", "docsis.mgmt",
FT_BYTES, BASE_HEX, NULL, 0x0,
"Mac Management Header", HFILL}
},
{&hf_docsis_mgt_dst_addr,
{"Destination Address", "docsis.mgmt.dst",
FT_ETHER, BASE_HEX, NULL, 0x0,
"Destination Address", HFILL}
},
{&hf_docsis_mgt_src_addr,
{"Source Address", "docsis.mgmt.src",
FT_ETHER, BASE_HEX, NULL, 0x0,
"Source Address", HFILL}
},
{&hf_docsis_mgt_msg_len,
{"Message Length - DSAP to End (Bytes)", "docsis.mgmt.msglen",
FT_UINT16, BASE_DEC, NULL, 0x0,
"Message Length", HFILL}
},
{&hf_docsis_mgt_dsap,
{"DSAP [0x00]", "docsis.mgmt.dsap",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Destination SAP", HFILL}
},
{&hf_docsis_mgt_ssap,
{"SSAP [0x00]", "docsis.mgmt.ssap",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Source SAP", HFILL}
},
{&hf_docsis_mgt_control,
{"Control [0x03]", "docsis.mgmt.control",
FT_UINT8, BASE_HEX, NULL, 0x0,
"Control", HFILL}
},
{&hf_docsis_mgt_version,
{"Version", "docsis.mgmt.version",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Version", HFILL}
},
{&hf_docsis_mgt_type,
{"Type", "docsis.mgmt.type",
FT_UINT8, BASE_DEC, VALS (mgmt_type_vals), 0x0,
"Type", HFILL}
},
{&hf_docsis_mgt_rsvd,
{"Reserved [0x00]", "docsis.mgmt.rsvd",
FT_UINT8, BASE_DEC, NULL, 0x0,
"Reserved", HFILL}
},
};
/* Setup protocol subtree array */
static gint *ett[] = {
&ett_docsis_mgmt,
&ett_mgmt_pay,
};
docsis_mgmt_dissector_table = register_dissector_table ("docsis_mgmt",
"DOCSIS Mac Management",
FT_UINT8, BASE_DEC);
/* Register the protocol name and description */
proto_docsis_mgmt = proto_register_protocol ("DOCSIS Mac Management",
"DOCSIS MAC MGMT",
"docsis_mgmt");
/* Required function calls to register the header fields and subtrees used */
proto_register_field_array (proto_docsis_mgmt, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
register_dissector ("docsis_mgmt", dissect_macmgmt, proto_docsis_mgmt);
}
/* If this dissector uses sub-dissector registration add a registration routine.
This format is required because a script is used to find these routines and
create the code that calls these routines.
*/
void
proto_reg_handoff_docsis_mgmt (void)
{
dissector_handle_t docsis_mgmt_handle;
docsis_mgmt_handle = find_dissector ("docsis_mgmt");
data_handle = find_dissector ("data");
dissector_add ("docsis", 0x03, docsis_mgmt_handle);
}
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