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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 1.12 2002/06/16 00:39:30 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"
/*
* Share type values - used in LANMAN and in SRVSVC.
*
* XXX - should we dissect share type values, at least in SRVSVC, as
* a subtree with bitfields, as the 0x80000000 bit appears to be a
* hidden bit, with some number of bits at the bottom being the share
* type?
*
* Does LANMAN use that bit?
*/
const value_string share_type_vals[] = {
{0, "Directory tree"},
{1, "Printer queue"},
{2, "Communications device"},
{3, "IPC"},
{0x80000000, "Hidden Directory tree"},
{0x80000001, "Hidden Printer queue"},
{0x80000002, "Hidden Communications device"},
{0x80000003, "Hidden IPC"},
{0, NULL}
};
int display_ms_string(tvbuff_t *tvb, 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, proto_tree *tree, int offset, int hf_index)
{
char *str, *p;
int len;
int charoffset;
guint16 character;
/* display a unicode string from the tree and return new offset */
/*
* Get the length of the string.
* XXX - is it a bug or a feature that this will throw an exception
* if we don't find the '\0'? I think it's a feature.
*/
len = 0;
while ((character = tvb_get_letohs(tvb, offset + len)) != '\0')
len += 2;
len += 2; /* count the '\0' too */
/*
* Allocate a buffer for the string; "len" is the length in
* bytes, not the length in characters.
*/
str = g_malloc(len/2);
/*
* XXX - this assumes the string is just ISO 8859-1; we need
* to better handle multiple character sets in Ethereal,
* including Unicode/ISO 10646, and multiple encodings of
* that character set (UCS-2, UTF-8, etc.).
*/
charoffset = offset;
p = str;
while ((character = tvb_get_letohs(tvb, charoffset)) != '\0') {
*p++ = character;
charoffset += 2;
}
*p = '\0';
proto_tree_add_string(tree, hf_index, tvb, offset, len, str);
g_free(str);
return offset+len;
}
int
dissect_smb_unknown(tvbuff_t *tvb, packet_info *pinfo _U_, proto_tree *tree, int offset)
{
/* display data as unknown */
proto_tree_add_text(tree, tvb, offset, -1, "Data (%u bytes)",
tvb_reported_length_remaining(tvb, offset));
return offset+tvb_length_remaining(tvb, offset);
}
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