forked from osmocom/wireshark
99 lines
2.7 KiB
C
99 lines
2.7 KiB
C
/* packet-smb-common.c
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* Common routines for smb packet dissection
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* Copyright 2000, Jeffrey C. Foster <jfoste@woodward.com>
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*
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* $Id: packet-smb-common.c,v 1.7 2001/07/08 20:38:26 guy Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* Copied from packet-pop.c
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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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#include "packet-smb-common.h"
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int display_ms_string(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int hf_index)
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{
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char *str;
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int len;
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/* display a string from the tree and return the new offset */
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len = tvb_strnlen(tvb, offset, -1);
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if (len == -1) {
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/*
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* XXX - throw an exception?
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*/
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len = tvb_length_remaining(tvb, offset);
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}
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str = g_malloc(len+1);
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tvb_memcpy(tvb, (guint8 *)str, offset, len);
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str[len] = '\0';
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proto_tree_add_string(tree, hf_index, tvb, offset, len+1, str);
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/*
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* XXX - "proto_tree_add_string()" mallocates a copy; it'd
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* be nice not to have it copy the string, but just to
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* make it the value, avoiding both the copy and the free
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* on the next line.
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*/
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g_free(str);
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return offset+len+1;
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}
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int display_unicode_string(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset, int hf_index)
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{
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/* display a unicode string from the tree and return new offset */
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char Temp[100], *OutPtr;
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const char *InPtr;
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/* this will crash if composite tvbuffs are used */
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/* XXX - need tvbuff routine to extract DBCS string lengths */
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InPtr = tvb_get_ptr(tvb, offset, 1);
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OutPtr = Temp; /* point to temp space */
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while ( *InPtr){ /* copy every other byte */
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*OutPtr++ = *InPtr;
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InPtr += 2;
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}
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*OutPtr = 0; /* terminate out string */
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proto_tree_add_string(tree, hf_index, tvb,
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offset, strlen(Temp)*2+2, Temp);
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return offset+strlen(Temp)*2+2;
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}
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int
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dissect_smb_unknown(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, int offset)
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{
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/* display data as unknown */
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guint len;
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len = tvb_length_remaining(tvb, offset);
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proto_tree_add_text(tree, tvb, offset, len, "Data (%u bytes)", len);
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return offset+len;
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}
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