4d2920314d
With the exception of docsis's packet-tlv.c file, these are all simple problems with the prefix not exactly set to PROTOABBREV. For example, for packet-bpkmattr.c, the field names are prefixed with "docsis.bpkmattr." instead of "docsis_bpkmattr.". packet-tlv.c had one mis-named field, namely "docsis.cos.sid". It has been changed to "docsis_tlv.cos.sid" in the patch to be attached, which includes patches for 29 files in the plugins/docsis/ directory ... svn path=/trunk/; revision=23088
314 lines
8.6 KiB
C
314 lines
8.6 KiB
C
/* packet-vendor.c
|
|
* Routines for Vendor Specific Encodings dissection
|
|
* Copyright 2002, Anand V. Narwani <anand[AT]narwani.org>
|
|
*
|
|
* $Id$
|
|
*
|
|
* 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., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
|
|
*/
|
|
|
|
|
|
/* Notes to Adding dissectors for Vendor specific TLV's:
|
|
* 1. Create a dissect_<vendorname> function with the following prototype:
|
|
* dissect_foovendor(tvbuff_t *tvb, proto_tree *tree, gint vsif_len)
|
|
* 2. vsif_len will be the *entire* length of the vsif TLV (including the
|
|
* Vendor Id TLV, which is 5 bytes long).
|
|
* 3. Create a new 'case' statement in dissect_vsif, for your specific Vendor
|
|
* id.
|
|
* 4. In that 'case' statement you will make the following calls:
|
|
* (assume for this example that your vendor id is 0x000054)
|
|
* #define VENDOR_FOOVENDOR 0x00054
|
|
* case VENDOR_FOOVENDOR:
|
|
* proto_item_append_text (it, " (foo vendor)");
|
|
* dissect_foovendor (tvb, vsif_tree, vsif_len);
|
|
* break;
|
|
* 5. Please see dissect_cisco for an example of how to do this.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
# include "config.h"
|
|
#endif
|
|
|
|
#include "moduleinfo.h"
|
|
|
|
#include <stdio.h>
|
|
#include <stdlib.h>
|
|
#include <string.h>
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
# include <sys/types.h>
|
|
#endif
|
|
|
|
#ifdef HAVE_NETINET_IN_H
|
|
# include <netinet/in.h>
|
|
#endif
|
|
|
|
#include <gmodule.h>
|
|
|
|
#include <epan/packet.h>
|
|
|
|
/* Define Vendor ID's here */
|
|
#define VENDOR_CISCO 0x00000C
|
|
|
|
/* Initialize the protocol and registered fields */
|
|
static int proto_docsis_vsif = -1;
|
|
static int hf_docsis_vsif = -1;
|
|
static int hf_docsis_vsif_vendorid = -1;
|
|
static int hf_docsis_vsif_vendor_unknown = -1;
|
|
static int hf_docsis_vsif_cisco_numphones = -1;
|
|
static int hf_docsis_vsif_cisco_ipprec = -1;
|
|
static int hf_docsis_vsif_cisco_ipprec_val = -1;
|
|
static int hf_docsis_vsif_cisco_ipprec_bw = -1;
|
|
static int hf_docsis_vsif_cisco_config_file = -1;
|
|
|
|
/* Initialize the subtree pointers */
|
|
static gint ett_docsis_vsif = -1;
|
|
static gint ett_docsis_vsif_ipprec = -1;
|
|
|
|
static const value_string vendorid_vals[] = {
|
|
{VENDOR_CISCO, "Cisco Systems, Inc."},
|
|
{0, NULL},
|
|
};
|
|
|
|
|
|
|
|
/* Forward Declarations for vendor specific dissectors */
|
|
static void dissect_cisco (tvbuff_t * tvb, proto_tree * tree,
|
|
gint vsif_len);
|
|
|
|
/* Code to actually dissect the packets */
|
|
static void
|
|
dissect_vsif (tvbuff_t * tvb, packet_info * pinfo _U_, proto_tree * tree)
|
|
{
|
|
proto_item *it;
|
|
proto_tree *vsif_tree;
|
|
guint8 type;
|
|
guint8 length;
|
|
guint32 value;
|
|
gint vsif_len;
|
|
|
|
/* get the reported length of the VSIF TLV */
|
|
vsif_len = tvb_reported_length_remaining (tvb, 0);
|
|
|
|
/* The first TLV in the VSIF encodings must be type 0x08 (Vendor ID) and
|
|
* length 3.
|
|
*/
|
|
type = tvb_get_guint8 (tvb, 0);
|
|
if (type != 0x08)
|
|
{
|
|
THROW (ReportedBoundsError);
|
|
}
|
|
|
|
length = tvb_get_guint8 (tvb, 1);
|
|
if (length != 3)
|
|
{
|
|
THROW (ReportedBoundsError);
|
|
}
|
|
|
|
/* Extract the Value of the Vendor ID */
|
|
value = tvb_get_ntoh24 (tvb, 2);
|
|
if (tree)
|
|
{
|
|
it =
|
|
proto_tree_add_protocol_format (tree, proto_docsis_vsif, tvb, 0, -1,
|
|
"VSIF Encodings");
|
|
vsif_tree = proto_item_add_subtree (it, ett_docsis_vsif);
|
|
proto_tree_add_item (vsif_tree, hf_docsis_vsif_vendorid, tvb, 2, 3, FALSE);
|
|
|
|
/* switch on the Vendor ID */
|
|
switch (value)
|
|
{
|
|
case VENDOR_CISCO:
|
|
proto_item_append_text (it, " (Cisco)");
|
|
dissect_cisco (tvb, vsif_tree, vsif_len);
|
|
break;
|
|
default:
|
|
proto_item_append_text (it, " (Unknown)");
|
|
proto_tree_add_item (vsif_tree, hf_docsis_vsif_vendor_unknown, tvb,
|
|
0, -1, FALSE);
|
|
break;
|
|
}
|
|
|
|
} /* if(tree) */
|
|
|
|
|
|
}
|
|
|
|
|
|
/* Dissector for Cisco Vendor Specific TLV's */
|
|
|
|
#define NUM_PHONES 0x0a
|
|
#define IOS_CONFIG_FILE 0x80
|
|
#define IP_PREC 0x0b
|
|
#define IP_PREC_VAL 0x01
|
|
#define IP_PREC_BW 0x02
|
|
|
|
static void
|
|
dissect_cisco (tvbuff_t * tvb, proto_tree * tree, gint vsif_len)
|
|
{
|
|
/* Start at pos = 5, since tvb includes the Vendor ID field */
|
|
int pos = 5;
|
|
guint8 type, length;
|
|
proto_item *ipprec_it;
|
|
proto_tree *ipprec_tree;
|
|
int templen;
|
|
|
|
while (pos < vsif_len)
|
|
{
|
|
/* Extract the type and length Fields from the TLV */
|
|
type = tvb_get_guint8 (tvb, pos++);
|
|
length = tvb_get_guint8 (tvb, pos++);
|
|
switch (type)
|
|
{
|
|
case NUM_PHONES:
|
|
proto_tree_add_item (tree, hf_docsis_vsif_cisco_numphones, tvb,
|
|
pos, length, FALSE);
|
|
break;
|
|
case IP_PREC:
|
|
ipprec_it =
|
|
proto_tree_add_text (tree, tvb, pos, length, "IP Precedence");
|
|
ipprec_tree =
|
|
proto_item_add_subtree (ipprec_it, ett_docsis_vsif_ipprec);
|
|
/* Handle Sub-TLVs in IP Precedence */
|
|
templen = pos + length;
|
|
while (pos < templen)
|
|
{
|
|
type = tvb_get_guint8 (tvb, pos++);
|
|
length = tvb_get_guint8 (tvb, pos++);
|
|
switch (type)
|
|
{
|
|
case IP_PREC_VAL:
|
|
if (length != 1)
|
|
THROW (ReportedBoundsError);
|
|
proto_tree_add_item (ipprec_tree,
|
|
hf_docsis_vsif_cisco_ipprec_val, tvb,
|
|
pos, length, FALSE);
|
|
break;
|
|
case IP_PREC_BW:
|
|
if (length != 4)
|
|
THROW (ReportedBoundsError);
|
|
proto_tree_add_item (ipprec_tree,
|
|
hf_docsis_vsif_cisco_ipprec_bw, tvb,
|
|
pos, length, FALSE);
|
|
break;
|
|
default:
|
|
THROW (ReportedBoundsError);
|
|
}
|
|
pos += length;
|
|
}
|
|
break;
|
|
case IOS_CONFIG_FILE:
|
|
proto_tree_add_item (tree, hf_docsis_vsif_cisco_config_file, tvb,
|
|
pos, length, FALSE);
|
|
}
|
|
pos += length;
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
/* Register the protocol with Wireshark */
|
|
|
|
/* this format is require because a script is used to build the C function
|
|
that calls all the protocol registration.
|
|
*/
|
|
|
|
|
|
void
|
|
proto_register_docsis_vsif (void)
|
|
{
|
|
|
|
/* Setup list of header fields See Section 1.6.1 for details*/
|
|
static hf_register_info hf[] = {
|
|
{&hf_docsis_vsif,
|
|
{"VSIF Encodings", "docsis_vsif",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Vendor Specific Encodings", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_vendorid,
|
|
{"Vendor Id", "docsis_vsif.vendorid",
|
|
FT_UINT24, BASE_HEX, VALS(vendorid_vals), 0x0,
|
|
"Vendor Identifier", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_vendor_unknown,
|
|
{"VSIF Encodings", "docsis_vsif.unknown",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"Unknown Vendor", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_cisco_numphones,
|
|
{"Number of phone lines", "docsis_vsif.cisco.numphones",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Number of phone lines", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_cisco_ipprec,
|
|
{"IP Precedence Encodings", "docsis_vsif.cisco.ipprec",
|
|
FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"IP Precedence Encodings", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_cisco_ipprec_val,
|
|
{"IP Precedence Value", "docsis_vsif.cisco.ipprec.value",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"IP Precedence Value", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_cisco_ipprec_bw,
|
|
{"IP Precedence Bandwidth", "docsis_vsif.cisco.ipprec.bw",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"IP Precedence Bandwidth", HFILL}
|
|
},
|
|
{&hf_docsis_vsif_cisco_config_file,
|
|
{"IOS Config File", "docsis_vsif.cisco.iosfile",
|
|
FT_STRING, BASE_DEC, NULL, 0x0,
|
|
"IOS Config File", HFILL}
|
|
},
|
|
};
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_docsis_vsif,
|
|
&ett_docsis_vsif_ipprec,
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_docsis_vsif =
|
|
proto_register_protocol ("DOCSIS Vendor Specific Encodings",
|
|
"DOCSIS VSIF", "docsis_vsif");
|
|
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array (proto_docsis_vsif, hf, array_length (hf));
|
|
proto_register_subtree_array (ett, array_length (ett));
|
|
|
|
register_dissector ("docsis_vsif", dissect_vsif, proto_docsis_vsif);
|
|
}
|
|
|
|
|
|
/* 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_vsif (void)
|
|
{
|
|
dissector_handle_t docsis_vsif_handle;
|
|
|
|
docsis_vsif_handle = find_dissector ("docsis_vsif");
|
|
dissector_add ("docsis", 0xFD, docsis_vsif_handle);
|
|
|
|
}
|