c6b79979c2
svn path=/trunk/; revision=38250
313 lines
7.8 KiB
C
313 lines
7.8 KiB
C
/* packet-pn.c
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* Common functions for other PROFINET protocols like IO, CBA, DCP, ...
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*
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* $Id$
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1999 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_SYS_TYPES_H
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/*#include <sys/types.h>*/
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#endif
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include <epan/dissectors/packet-dcerpc.h>
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#include <epan/expert.h>
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#include "packet-pn.h"
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static int hf_pn_padding = -1;
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static int hf_pn_undecoded_data = -1;
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static int hf_pn_user_data = -1;
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static int hf_pn_user_bytes = -1;
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static int hf_pn_malformed = -1;
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/* dissect an 8 bit unsigned integer */
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int
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dissect_pn_uint8(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint8 *pdata)
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{
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guint8 data;
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data = tvb_get_guint8 (tvb, offset);
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if (tree) {
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proto_tree_add_uint(tree, hfindex, tvb, offset, 1, data);
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}
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if (pdata)
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*pdata = data;
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return offset + 1;
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}
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/* dissect a 16 bit unsigned integer */
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int
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dissect_pn_uint16(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint16 *pdata)
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{
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guint16 data;
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data = tvb_get_ntohs (tvb, offset);
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if (tree) {
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proto_tree_add_uint(tree, hfindex, tvb, offset, 2, data);
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}
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if (pdata)
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*pdata = data;
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return offset + 2;
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}
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/* dissect a 32 bit unsigned integer */
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int
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dissect_pn_uint32(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint32 *pdata)
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{
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guint32 data;
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data = tvb_get_ntohl (tvb, offset);
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if (tree) {
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proto_tree_add_uint(tree, hfindex, tvb, offset, 4, data);
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}
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if (pdata)
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*pdata = data;
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return offset+4;
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}
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/* dissect a 16 bit signed integer */
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int
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dissect_pn_int16(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, gint16 *pdata)
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{
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gint16 data;
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data = tvb_get_ntohs (tvb, offset);
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if (tree) {
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proto_tree_add_int(tree, hfindex, tvb, offset, 2, data);
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}
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if (pdata)
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*pdata = data;
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return offset + 2;
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}
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/* dissect a 32 bit signed integer */
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int
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dissect_pn_int32(tvbuff_t *tvb, gint offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, gint32 *pdata)
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{
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gint32 data;
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data = tvb_get_ntohl (tvb, offset);
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if (tree) {
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proto_tree_add_int(tree, hfindex, tvb, offset, 4, data);
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}
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if (pdata)
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*pdata = data;
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return offset + 4;
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}
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/* dissect a 24bit OUI (IEC organizational unique id) */
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int
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dissect_pn_oid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint32 *pdata)
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{
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guint32 data;
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data = tvb_get_ntoh24(tvb, offset);
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if (tree) {
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proto_tree_add_uint(tree, hfindex, tvb, offset, 3, data);
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}
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if (pdata)
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*pdata = data;
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return offset+3;
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}
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/* dissect a 6 byte MAC address */
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int
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dissect_pn_mac(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint8 *pdata)
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{
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guint8 data[6];
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tvb_memcpy(tvb, data, offset, 6);
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if(tree)
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proto_tree_add_ether(tree, hfindex, tvb, offset, 6, data);
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if (pdata)
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memcpy(pdata, data, 6);
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return offset + 6;
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}
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/* dissect an IPv4 address */
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int
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dissect_pn_ipv4(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, guint32 *pdata)
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{
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guint32 data;
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data = tvb_get_ipv4(tvb, offset);
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if(tree)
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proto_tree_add_ipv4(tree, hfindex, tvb, offset, 4, data);
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if (pdata)
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*pdata = data;
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return offset + 4;
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}
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/* dissect a 16 byte UUID address */
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int
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dissect_pn_uuid(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, int hfindex, e_uuid_t *uuid)
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{
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guint8 drep[2] = { 0,0 };
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offset = dissect_dcerpc_uuid_t(tvb, offset, pinfo, tree, drep,
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hfindex, uuid);
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return offset;
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}
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/* "dissect" some bytes still undecoded (with Expert warning) */
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int
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dissect_pn_undecoded(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, guint32 length)
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{
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proto_item *item;
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item = proto_tree_add_string_format(tree, hf_pn_undecoded_data, tvb, offset, length, "data",
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"Undecoded Data: %d bytes", length);
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expert_add_info_format(pinfo, item, PI_UNDECODED, PI_WARN,
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"Undecoded Data, %u bytes", length);
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return offset + length;
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}
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/* "dissect" some user bytes */
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int
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dissect_pn_user_data_bytes(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, guint32 length, const char *text _U_)
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{
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proto_tree_add_bytes(tree, hf_pn_user_bytes, tvb, offset, length, tvb_get_ptr(tvb,offset, length));
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return offset + length;
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}
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int
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dissect_pn_user_data(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, guint32 length, const char *text)
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{
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proto_tree_add_string_format(tree, hf_pn_user_data, tvb, offset, length, "data",
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"%s: %d bytes", text, length);
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return offset + length;
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}
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/* packet is malformed, mark it as such */
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int
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dissect_pn_malformed(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, guint32 length)
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{
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proto_tree_add_item(tree, hf_pn_malformed, tvb, 0, 10000, ENC_NA);
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return offset + length;
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}
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/* dissect some padding data (with the given length) */
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int
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dissect_pn_padding(tvbuff_t *tvb, int offset, packet_info *pinfo _U_,
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proto_tree *tree, int length)
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{
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proto_tree_add_string_format(tree, hf_pn_padding, tvb, offset, length, "data",
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"Padding: %u byte", length);
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return offset + length;
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}
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/* align offset to 4 */
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int
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dissect_pn_align4(tvbuff_t *tvb, int offset, packet_info *pinfo _U_, proto_tree *tree)
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{
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guint padding = 0;
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if (offset % 4) {
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padding = 4 - (offset % 4);
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proto_tree_add_string_format(tree, hf_pn_padding, tvb, offset, padding, "data",
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"Padding: %u byte", padding);
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}
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return offset + padding;
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}
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/* append the given info text to item and column */
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void
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pn_append_info(packet_info *pinfo, proto_item *dcp_item, const char *text)
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{
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col_append_str(pinfo->cinfo, COL_INFO, text);
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proto_item_append_text(dcp_item, "%s", text);
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}
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void
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init_pn (int proto)
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{
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static hf_register_info hf[] = {
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{ &hf_pn_padding,
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{ "Padding", "pn.padding", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_pn_undecoded_data,
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{ "Undecoded Data", "pn.undecoded", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_pn_user_data,
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{ "User Data", "pn.user_data", FT_STRING, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_pn_user_bytes,
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{ "Substitute Data", "pn.user_bytes", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }},
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{ &hf_pn_malformed,
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{ "Malformed", "pn_rt.malformed", FT_BYTES, BASE_NONE, NULL, 0x0, NULL, HFILL }}
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};
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/*static gint *ett[] = {
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};*/
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proto_register_field_array (proto, hf, array_length (hf));
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/*proto_register_subtree_array (ett, array_length (ett));*/
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}
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