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/* packet-smb-mailslot.c
* Routines for SMB mailslot packet dissection
* Copyright 2000, Jeffrey C. Foster <jfoste@woodward.com>
*
* $Id: packet-smb-mailslot.c,v 1.16 2001/08/07 08:39:56 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"
#include "packet-smb-mailslot.h"
#include "packet-smb-browse.h"
#include "packet-smb-logon.h"
#include "packet-smb-pipe.h"
static int proto_smb_msp = -1;
static int hf_opcode = -1;
static int hf_priority = -1;
static int hf_class = -1;
static int hf_size = -1;
static int hf_name = -1;
static int ett_smb_msp = -1;
static const value_string opcode_vals[] = {
{1, "Write Mail Slot"},
{0, NULL}
};
static const value_string class_vals[] = {
{1, "Reliable"},
{2, "Unreliable & Broadcast"},
{0, NULL}
};
/* decode the SMB mail slot protocol */
gboolean
dissect_mailslot_smb(tvbuff_t *setup_tvb, tvbuff_t *tvb, packet_info *pinfo,
proto_tree *parent_tree)
{
struct smb_info *smb_info = pinfo->private;
proto_tree *tree = 0;
proto_item *item;
tvbuff_t *next_tvb = NULL;
guint16 opcode;
int offset = 0;
int len;
if (!proto_is_protocol_enabled(proto_smb_msp)) {
return FALSE;
}
pinfo->current_proto = "SMB Mailslot";
if (check_col(pinfo->fd, COL_PROTOCOL)) {
col_set_str(pinfo->fd, COL_PROTOCOL, "SMB Mailslot");
}
if (smb_info->data_offset < 0) {
/* Interim reply */
col_set_str(pinfo->fd, COL_INFO, "Interim reply");
return TRUE;
}
/* do the opcode field */
opcode = tvb_get_letohs(setup_tvb, offset);
if (check_col(pinfo->fd, COL_INFO)) {
col_add_str(pinfo->fd, COL_INFO,
val_to_str(opcode, opcode_vals, "Unknown opcode:0x%04x"));
}
if (parent_tree) {
item = proto_tree_add_item(parent_tree, proto_smb_msp, setup_tvb,
offset, tvb_length_remaining(setup_tvb, offset), FALSE);
tree = proto_item_add_subtree(item, ett_smb_msp);
/* opcode */
proto_tree_add_uint(tree, hf_opcode, setup_tvb, offset, 2,
opcode);
offset += 2;
/* priority */
proto_tree_add_item(tree, hf_priority, setup_tvb, offset, 2,
TRUE);
offset += 2;
/* class */
proto_tree_add_item(tree, hf_class, setup_tvb, offset, 2, TRUE);
offset += 2;
/* size */
proto_tree_add_item(tree, hf_size, setup_tvb, offset, 2, TRUE);
offset += 2;
/* mailslot name */
len = tvb_strsize(setup_tvb, offset);
proto_tree_add_item(tree, hf_name, setup_tvb, offset, len,
TRUE);
offset += len;
}
/* Quit if we don't have the transaction command name (mailslot path) */
if (smb_info->trans_cmd == NULL)
return TRUE;
/* create new tvb for subdissector */
next_tvb = tvb_new_subset(tvb, smb_info->data_offset, -1, -1);
/*** Decide what dissector to call based upon the command value ***/
if (strcmp(smb_info->trans_cmd, "BROWSE") == 0) {
return dissect_mailslot_browse(next_tvb, pinfo, parent_tree);
} else if (strcmp(smb_info->trans_cmd, "LANMAN") == 0) {
/* Decode a LANMAN browse */
return dissect_mailslot_lanman(next_tvb, pinfo, parent_tree);
} else if ((strncmp(smb_info->trans_cmd, "NET", strlen("NET")) == 0) ||
(strcmp(smb_info->trans_cmd, "TEMP\\NETLOGON") == 0) ||
(strcmp(smb_info->trans_cmd, "MSSP") == 0)) {
/* NOTE: use TEMP\\NETLOGON and MSSP because they seems very common, */
/* NOTE: may need a look up list to check for the mailslot names passed */
/* by the logon request packet */
return dissect_smb_logon(next_tvb, pinfo, parent_tree);
}
return TRUE;
}
void
register_proto_smb_mailslot(void)
{
static hf_register_info hf[] = {
{ &hf_opcode,
{ "Opcode", "mailslot.opcode", FT_UINT16, BASE_DEC,
VALS(opcode_vals), 0, "MAILSLOT OpCode", HFILL }},
{ &hf_priority,
{ "Priority", "mailslot.priority", FT_UINT16, BASE_DEC,
NULL, 0, "MAILSLOT Priority of transaction", HFILL }},
{ &hf_class,
{ "Class", "mailslot.class", FT_UINT16, BASE_DEC,
VALS(class_vals), 0, "MAILSLOT Class of transaction", HFILL }},
{ &hf_size,
{ "Size", "mailslot.size", FT_UINT16, BASE_DEC,
NULL, 0, "MAILSLOT Total size of mail data", HFILL }},
{ &hf_name,
{ "Mailslot Name", "mailslot.name", FT_STRING, BASE_NONE,
NULL, 0, "MAILSLOT Name of mailslot", HFILL }},
};
static gint *ett[] = {
&ett_smb_msp
};
proto_smb_msp = proto_register_protocol(
"SMB MailSlot Protocol", "SMB Mailslot", "mailslot");
proto_register_field_array(proto_smb_msp, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
}
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