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