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wireshark/packet-dcerpc.c

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/* packet-dcerpc.c
* Routines for DCERPC packet disassembly
* Copyright 2001, Todd Sabin <tas@webspan.net>
*
* $Id: packet-dcerpc.c,v 1.4 2001/04/27 01:27:36 guy Exp $
*
* Ethereal - Network traffic analyzer
* By Gerald Combs <gerald@zing.org>
* Copyright 1998 Gerald Combs
*
* 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.
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#ifdef HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#include <string.h>
#include <ctype.h>
#include <glib.h>
#include "packet.h"
#include "packet-dcerpc.h"
static const value_string pckt_vals[] = {
{ 0, "Request"},
{ 1, "Ping"},
{ 2, "Response"},
{ 3, "Fault"},
{ 4, "Working"},
{ 5, "Nocall"},
{ 6, "Reject"},
{ 7, "Ack"},
{ 8, "Cl_cancel"},
{ 9, "Fack"},
{ 10, "Cancel_ack"},
{ 11, "Bind"},
{ 12, "Bind_ack"},
{ 13, "Bind_nak"},
{ 14, "Alter_context"},
{ 15, "Alter_context_resp"},
{ 16, "AUTH3?"},
{ 17, "Shutdown"},
{ 18, "Co_cancel"},
{ 19, "Orphaned"},
};
static const true_false_string flags_set_truth = {
"Set",
"Not set"
};
static int proto_dcerpc = -1;
/* field defines */
static int hf_dcerpc_ver = -1;
static int hf_dcerpc_ver_minor = -1;
static int hf_dcerpc_packet_type = -1;
static int hf_dcerpc_cn_flags = -1;
static int hf_dcerpc_cn_flags_first_frag = -1;
static int hf_dcerpc_cn_flags_last_frag = -1;
static int hf_dcerpc_cn_flags_cancel_pending = -1;
static int hf_dcerpc_cn_flags_reserved = -1;
static int hf_dcerpc_cn_flags_mpx = -1;
static int hf_dcerpc_cn_flags_dne = -1;
static int hf_dcerpc_cn_flags_maybe = -1;
static int hf_dcerpc_cn_flags_object = -1;
static int hf_dcerpc_cn_frag_len = -1;
static int hf_dcerpc_cn_auth_len = -1;
static int hf_dcerpc_cn_call_id = -1;
static int hf_dcerpc_cn_max_xmit = -1;
static int hf_dcerpc_cn_max_recv = -1;
static int hf_dcerpc_cn_assoc_group = -1;
static int hf_dcerpc_cn_num_ctx_items = -1;
static int hf_dcerpc_cn_ctx_id = -1;
static int hf_dcerpc_cn_num_trans_items = -1;
static int hf_dcerpc_cn_bind_if_id = -1;
static int hf_dcerpc_cn_bind_if_ver = -1;
static int hf_dcerpc_cn_bind_trans_id = -1;
static int hf_dcerpc_cn_bind_trans_ver = -1;
static int hf_dcerpc_cn_alloc_hint = -1;
static int hf_dcerpc_cn_sec_addr_len = -1;
static int hf_dcerpc_cn_num_results = -1;
static int hf_dcerpc_cn_ack_result = -1;
static int hf_dcerpc_cn_ack_reason = -1;
static int hf_dcerpc_dg_flags1 = -1;
static int hf_dcerpc_dg_flags1_rsrvd_01 = -1;
static int hf_dcerpc_dg_flags1_last_frag = -1;
static int hf_dcerpc_dg_flags1_frag = -1;
static int hf_dcerpc_dg_flags1_nofack = -1;
static int hf_dcerpc_dg_flags1_maybe = -1;
static int hf_dcerpc_dg_flags1_idempotent = -1;
static int hf_dcerpc_dg_flags1_broadcast = -1;
static int hf_dcerpc_dg_flags1_rsrvd_80 = -1;
static int hf_dcerpc_dg_flags2 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_01 = -1;
static int hf_dcerpc_dg_flags2_cancel_pending = -1;
static int hf_dcerpc_dg_flags2_rsrvd_04 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_08 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_10 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_20 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_40 = -1;
static int hf_dcerpc_dg_flags2_rsrvd_80 = -1;
static int hf_dcerpc_dg_serial_hi = -1;
static int hf_dcerpc_obj_id = -1;
static int hf_dcerpc_dg_if_id = -1;
static int hf_dcerpc_dg_act_id = -1;
static int hf_dcerpc_dg_serial_lo = -1;
static int hf_dcerpc_dg_ahint = -1;
static int hf_dcerpc_dg_ihint = -1;
static int hf_dcerpc_dg_frag_len = -1;
static int hf_dcerpc_dg_frag_num = -1;
static int hf_dcerpc_dg_auth_proto = -1;
static int hf_dcerpc_opnum = -1;
static int hf_dcerpc_dg_seqnum = -1;
static int hf_dcerpc_dg_server_boot = -1;
static int hf_dcerpc_dg_if_ver = -1;
static gint ett_dcerpc = -1;
static gint ett_dcerpc_cn_flags = -1;
static gint ett_dcerpc_dg_flags1 = -1;
static gint ett_dcerpc_dg_flags2 = -1;
guint16
dcerpc_tvb_get_ntohs (tvbuff_t *tvb, gint offset, char *drep)
{
if (drep[0] & 0x10) {
return tvb_get_letohs (tvb, offset);
} else {
return tvb_get_ntohs (tvb, offset);
}
}
guint32
dcerpc_tvb_get_ntohl (tvbuff_t *tvb, gint offset, char *drep)
{
if (drep[0] & 0x10) {
return tvb_get_letohl (tvb, offset);
} else {
return tvb_get_ntohl (tvb, offset);
}
}
void
dcerpc_tvb_get_uuid (tvbuff_t *tvb, gint offset, char *drep, e_uuid_t *uuid)
{
unsigned int i;
uuid->Data1 = dcerpc_tvb_get_ntohl (tvb, offset, drep);
uuid->Data2 = dcerpc_tvb_get_ntohs (tvb, offset+4, drep);
uuid->Data3 = dcerpc_tvb_get_ntohs (tvb, offset+6, drep);
for (i=0; i<sizeof (uuid->Data4); i++) {
uuid->Data4[i] = tvb_get_guint8 (tvb, offset+8+i);
}
}
static void
dissect_dcerpc_cn_bind (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
e_dce_cn_common_hdr_t *hdr)
{
guint16 max_xmit, max_recv;
guint32 assoc_group;
guint8 num_ctx_items;
guint16 ctx_id;
guint16 num_trans_items;
e_uuid_t if_id;
e_uuid_t trans_id;
guint32 if_ver, trans_ver;
int offset = 16;
max_xmit = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
max_recv = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
assoc_group = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep);
offset += 4;
num_ctx_items = tvb_get_guint8 (tvb, offset);
offset++;
/* padding */
offset += 3;
ctx_id = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
num_trans_items = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &if_id);
offset += 16;
if_ver = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep);
offset += 4;
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &trans_id);
offset += 16;
trans_ver = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep);
offset += 4;
if (check_col (pinfo->fd, COL_INFO)) {
col_add_fstr (pinfo->fd, COL_INFO, "Bind: UUID %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x ver %d",
if_id.Data1, if_id.Data2, if_id.Data3,
if_id.Data4[0], if_id.Data4[1],
if_id.Data4[2], if_id.Data4[3],
if_id.Data4[4], if_id.Data4[5],
if_id.Data4[6], if_id.Data4[7],
if_ver);
}
if (dcerpc_tree) {
offset = 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_xmit, tvb, offset, 2, max_xmit);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_recv, tvb, offset, 2, max_recv);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_assoc_group, tvb, offset, 4, assoc_group);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_ctx_items, tvb, offset, 1, num_ctx_items);
offset++;
/* padding */
offset += 3;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ctx_id, tvb, offset, 2, ctx_id);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_trans_items, tvb, offset, 2, num_trans_items);
offset += 2;
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_cn_bind_if_id, tvb,
offset, 16, "HMMM",
"Interface UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
if_id.Data1, if_id.Data2, if_id.Data3,
if_id.Data4[0],
if_id.Data4[1],
if_id.Data4[2],
if_id.Data4[3],
if_id.Data4[4],
if_id.Data4[5],
if_id.Data4[6],
if_id.Data4[7]);
offset += 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_bind_if_ver, tvb, offset, 4, if_ver);
offset += 4;
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_cn_bind_trans_id, tvb,
offset, 16, "HMMM",
"Transfer Syntax: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
trans_id.Data1, trans_id.Data2, trans_id.Data3,
trans_id.Data4[0],
trans_id.Data4[1],
trans_id.Data4[2],
trans_id.Data4[3],
trans_id.Data4[4],
trans_id.Data4[5],
trans_id.Data4[6],
trans_id.Data4[7]);
offset += 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_bind_trans_ver, tvb, offset, 4, trans_ver);
offset += 4;
}
}
static void
dissect_dcerpc_cn_bind_ack (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
e_dce_cn_common_hdr_t *hdr)
{
guint16 max_xmit, max_recv;
guint32 assoc_group;
guint16 sec_addr_len;
guint8 num_results;
guint16 result = 0;
guint16 reason = 0;
int offset = 16;
max_xmit = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
max_recv = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
assoc_group = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep);
offset += 4;
sec_addr_len = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2 + sec_addr_len;
if (offset % 4) {
offset += 4 - offset % 4;
}
num_results = tvb_get_guint8 (tvb, offset);
offset++;
/* padding */
offset += 3;
if (num_results == 1) {
result = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
reason = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
}
if (check_col (pinfo->fd, COL_INFO)) {
if (num_results == 1 && result == 0) {
col_add_fstr (pinfo->fd, COL_INFO, "Bind ack: accept max_xmit: %d max_recv: %d",
max_xmit, max_recv);
} else {
/* FIXME: should put in reason */
col_add_fstr (pinfo->fd, COL_INFO, "Bind ack: %s",
result == 1 ? "User reject" :
result == 2 ? "Provider reject" :
"Unknown");
}
}
if (dcerpc_tree) {
offset = 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_xmit, tvb, offset, 2, max_xmit);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_max_recv, tvb, offset, 2, max_recv);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_assoc_group, tvb, offset, 4, assoc_group);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_sec_addr_len, tvb, offset, 2, sec_addr_len);
offset +=2 + sec_addr_len;
if (offset % 4) {
offset += 4 - offset % 4;
}
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_num_results, tvb, offset, 1, num_results);
offset++;
/* padding */
offset += 3;
if (num_results == 1) {
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ack_result, tvb, offset, 2, result);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ack_reason, tvb, offset, 2, reason);
offset += 2;
}
}
}
static void
dissect_dcerpc_cn_rqst (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
e_dce_cn_common_hdr_t *hdr)
{
guint32 alloc_hint;
guint16 ctx_id;
guint16 opnum;
e_uuid_t obj_id;
int offset = 16;
alloc_hint = dcerpc_tvb_get_ntohl (tvb, offset, hdr->drep);
offset += 4;
ctx_id = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
opnum = dcerpc_tvb_get_ntohs (tvb, offset, hdr->drep);
offset += 2;
if (hdr->flags & 0x80) {
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &obj_id);
offset += 16;
}
if (check_col (pinfo->fd, COL_INFO)) {
col_add_fstr (pinfo->fd, COL_INFO, "Request: opnum: %d ctx_id:%d",
opnum, ctx_id);
}
if (dcerpc_tree) {
offset = 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_alloc_hint, tvb, offset, 4, alloc_hint);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_ctx_id, tvb, offset, 2, ctx_id);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_opnum, tvb, offset, 2, opnum);
offset += 2;
if (hdr->flags & 0x80) {
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_obj_id, tvb,
offset, 16, "HMMM",
"Object UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
obj_id.Data1, obj_id.Data2, obj_id.Data3,
obj_id.Data4[0],
obj_id.Data4[1],
obj_id.Data4[2],
obj_id.Data4[3],
obj_id.Data4[4],
obj_id.Data4[5],
obj_id.Data4[6],
obj_id.Data4[7]);
offset += 16;
}
}
}
/*
* DCERPC dissector for connection oriented calls
*/
static gboolean
dissect_dcerpc_cn (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti = NULL;
proto_item *tf = NULL;
proto_tree *dcerpc_tree = NULL;
proto_tree *cn_flags_tree = NULL;
e_dce_cn_common_hdr_t hdr;
int offset = 0;
/*
* Check if this looks like a C/O DCERPC call
*/
if (!tvb_bytes_exist (tvb, 0, sizeof (hdr))) {
return FALSE;
}
hdr.rpc_ver = tvb_get_guint8 (tvb, offset++);
if (hdr.rpc_ver != 5)
return FALSE;
hdr.rpc_ver_minor = tvb_get_guint8 (tvb, offset++);
if (hdr.rpc_ver_minor != 0 && hdr.rpc_ver_minor != 1)
return FALSE;
hdr.ptype = tvb_get_guint8 (tvb, offset++);
if (hdr.ptype > 19)
return FALSE;
if (check_col (pinfo->fd, COL_PROTOCOL))
col_set_str (pinfo->fd, COL_PROTOCOL, "DCERPC");
if (check_col (pinfo->fd, COL_INFO))
col_set_str (pinfo->fd, COL_INFO, pckt_vals[hdr.ptype].strptr);
hdr.flags = tvb_get_guint8 (tvb, offset++);
tvb_memcpy (tvb, (guint8 *)hdr.drep, offset, sizeof (hdr.drep));
offset += sizeof (hdr.drep);
hdr.frag_len = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.auth_len = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.call_id = dcerpc_tvb_get_ntohl (tvb, offset, hdr.drep);
offset += 4;
if (tree) {
ti = proto_tree_add_item (tree, proto_dcerpc, tvb, 0, tvb_length(tvb), FALSE);
if (ti) {
dcerpc_tree = proto_item_add_subtree (ti, ett_dcerpc);
}
offset = 0;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_ver, tvb, offset++, 1, hdr.rpc_ver);
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_ver_minor, tvb, offset++, 1, hdr.rpc_ver_minor);
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_packet_type, tvb, offset++, 1, hdr.ptype);
tf = proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_flags, tvb, offset, 1, hdr.flags);
cn_flags_tree = proto_item_add_subtree (tf, ett_dcerpc_cn_flags);
if (cn_flags_tree) {
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_first_frag, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_last_frag, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_cancel_pending, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_reserved, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_mpx, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_dne, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_maybe, tvb, offset, 1, hdr.flags);
proto_tree_add_boolean (cn_flags_tree, hf_dcerpc_cn_flags_object, tvb, offset, 1, hdr.flags);
}
offset++;
proto_tree_add_text (dcerpc_tree, tvb, offset, sizeof (hdr.drep), "Data Rep");
offset += sizeof (hdr.drep);
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_frag_len, tvb, offset, 2, hdr.frag_len);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_auth_len, tvb, offset, 2, hdr.auth_len);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_cn_call_id, tvb, offset, 4, hdr.call_id);
offset += 4;
}
/*
* Packet type specific stuff is next.
*/
switch (hdr.ptype) {
case PDU_BIND:
dissect_dcerpc_cn_bind (tvb, pinfo, dcerpc_tree, &hdr);
break;
case PDU_BIND_ACK:
dissect_dcerpc_cn_bind_ack (tvb, pinfo, dcerpc_tree, &hdr);
break;
case PDU_REQ:
dissect_dcerpc_cn_rqst (tvb, pinfo, dcerpc_tree, &hdr);
break;
default:
break;
}
return TRUE;
}
/*
* DCERPC dissector for connectionless calls
*/
static gboolean
dissect_dcerpc_dg (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
{
proto_item *ti = NULL;
proto_item *tf = NULL;
proto_tree *dcerpc_tree = NULL;
proto_tree *dg_flags1_tree = NULL;
proto_tree *dg_flags2_tree = NULL;
e_dce_dg_common_hdr_t hdr;
int offset = 0;
/*
* Check if this looks like a CL DCERPC call. All dg packets
* have an 80 byte header on them. Which starts with
* version (4), pkt_type.
*/
if (!tvb_bytes_exist (tvb, 0, sizeof (hdr))) {
return FALSE;
}
hdr.rpc_ver = tvb_get_guint8 (tvb, offset++);
if (hdr.rpc_ver != 4)
return FALSE;
hdr.ptype = tvb_get_guint8 (tvb, offset++);
if (hdr.ptype > 19)
return FALSE;
if (check_col (pinfo->fd, COL_PROTOCOL))
col_set_str (pinfo->fd, COL_PROTOCOL, "DCERPC");
if (check_col (pinfo->fd, COL_INFO))
col_set_str (pinfo->fd, COL_INFO, pckt_vals[hdr.ptype].strptr);
hdr.flags1 = tvb_get_guint8 (tvb, offset++);
hdr.flags2 = tvb_get_guint8 (tvb, offset++);
tvb_memcpy (tvb, (guint8 *)hdr.drep, offset, sizeof (hdr.drep));
offset += sizeof (hdr.drep);
hdr.serial_hi = tvb_get_guint8 (tvb, offset++);
dcerpc_tvb_get_uuid (tvb, offset, hdr.drep, &hdr.obj_id);
offset += 16;
dcerpc_tvb_get_uuid (tvb, offset, hdr.drep, &hdr.if_id);
offset += 16;
dcerpc_tvb_get_uuid (tvb, offset, hdr.drep, &hdr.act_id);
offset += 16;
hdr.server_boot = dcerpc_tvb_get_ntohl (tvb, offset, hdr.drep);
offset += 4;
hdr.if_ver = dcerpc_tvb_get_ntohl (tvb, offset, hdr.drep);
offset += 4;
hdr.seqnum = dcerpc_tvb_get_ntohl (tvb, offset, hdr.drep);
offset += 4;
hdr.opnum = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.ihint = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.ahint = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.frag_len = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.frag_num = dcerpc_tvb_get_ntohs (tvb, offset, hdr.drep);
offset += 2;
hdr.auth_proto = tvb_get_guint8 (tvb, offset++);
hdr.serial_lo = tvb_get_guint8 (tvb, offset++);
if (tree) {
ti = proto_tree_add_item (tree, proto_dcerpc, tvb, 0, tvb_length(tvb), FALSE);
if (ti) {
dcerpc_tree = proto_item_add_subtree(ti, ett_dcerpc);
}
offset = 0;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_ver, tvb, offset++, 1, hdr.rpc_ver);
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_packet_type, tvb, offset++, 1, hdr.ptype);
tf = proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_flags1, tvb, offset, 1, hdr.flags1);
dg_flags1_tree = proto_item_add_subtree (tf, ett_dcerpc_dg_flags1);
if (dg_flags1_tree) {
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_rsrvd_01, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_last_frag, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_frag, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_nofack, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_maybe, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_idempotent, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_broadcast, tvb, offset, 1, hdr.flags1);
proto_tree_add_boolean (dg_flags1_tree, hf_dcerpc_dg_flags1_rsrvd_80, tvb, offset, 1, hdr.flags1);
}
offset++;
tf = proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_flags2, tvb, offset, 1, hdr.flags2);
dg_flags2_tree = proto_item_add_subtree (tf, ett_dcerpc_dg_flags2);
if (dg_flags2_tree) {
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_01, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_cancel_pending, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_04, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_08, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_10, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_20, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_40, tvb, offset, 1, hdr.flags2);
proto_tree_add_boolean (dg_flags2_tree, hf_dcerpc_dg_flags2_rsrvd_80, tvb, offset, 1, hdr.flags2);
}
offset++;
proto_tree_add_text (dcerpc_tree, tvb, offset, sizeof (hdr.drep), "Data Rep");
offset += sizeof (hdr.drep);
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_serial_hi, tvb, offset++, 1, hdr.serial_hi);
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_obj_id, tvb,
offset, 16, "HMMM",
"Object: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
hdr.obj_id.Data1, hdr.obj_id.Data2, hdr.obj_id.Data3,
hdr.obj_id.Data4[0],
hdr.obj_id.Data4[1],
hdr.obj_id.Data4[2],
hdr.obj_id.Data4[3],
hdr.obj_id.Data4[4],
hdr.obj_id.Data4[5],
hdr.obj_id.Data4[6],
hdr.obj_id.Data4[7]);
offset += 16;
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_dg_if_id, tvb,
offset, 16, "HMMM",
"Interface: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
hdr.if_id.Data1, hdr.if_id.Data2, hdr.if_id.Data3,
hdr.if_id.Data4[0],
hdr.if_id.Data4[1],
hdr.if_id.Data4[2],
hdr.if_id.Data4[3],
hdr.if_id.Data4[4],
hdr.if_id.Data4[5],
hdr.if_id.Data4[6],
hdr.if_id.Data4[7]);
offset += 16;
proto_tree_add_string_format (dcerpc_tree, hf_dcerpc_dg_act_id, tvb,
offset, 16, "HMMM",
"Activity: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
hdr.act_id.Data1, hdr.act_id.Data2, hdr.act_id.Data3,
hdr.act_id.Data4[0],
hdr.act_id.Data4[1],
hdr.act_id.Data4[2],
hdr.act_id.Data4[3],
hdr.act_id.Data4[4],
hdr.act_id.Data4[5],
hdr.act_id.Data4[6],
hdr.act_id.Data4[7]);
offset += 16;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_server_boot, tvb, offset, 4, hdr.server_boot);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_if_ver, tvb, offset, 4, hdr.if_ver);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_seqnum, tvb, offset, 4, hdr.seqnum);
offset += 4;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_opnum, tvb, offset, 2, hdr.opnum);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_ihint, tvb, offset, 2, hdr.ihint);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_ahint, tvb, offset, 2, hdr.ahint);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_frag_len, tvb, offset, 2, hdr.frag_len);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_frag_num, tvb, offset, 2, hdr.frag_num);
offset += 2;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_auth_proto, tvb, offset, 1, hdr.auth_proto);
offset++;
proto_tree_add_uint (dcerpc_tree, hf_dcerpc_dg_serial_lo, tvb, offset, 1, hdr.serial_lo);
offset++;
}
/*
* Packet type specific stuff is next.
*/
return TRUE;
}
void
proto_register_dcerpc(void)
{
static hf_register_info hf[] = {
{ &hf_dcerpc_ver,
{ "Version", "dcerpc.ver", FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_ver_minor,
{ "Version (minor)", "dcerpc.ver_minor", FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_packet_type,
{ "Packet type", "dcerpc.pkt_type", FT_UINT8, BASE_HEX, VALS (pckt_vals), 0x0, "" }},
{ &hf_dcerpc_cn_flags,
{ "Packet Flags", "dcerpc.cn_flags", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_flags_first_frag,
{ "First Frag", "dcerpc.cn_flags.first_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x1, "" }},
{ &hf_dcerpc_cn_flags_last_frag,
{ "Last Frag", "dcerpc.cn_flags.last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x2, "" }},
{ &hf_dcerpc_cn_flags_cancel_pending,
{ "Cancel Pending", "dcerpc.cn_flags.cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x4, "" }},
{ &hf_dcerpc_cn_flags_reserved,
{ "Reserved", "dcerpc.cn_flags.reserved", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x8, "" }},
{ &hf_dcerpc_cn_flags_mpx,
{ "Multiplex", "dcerpc.cn_flags.mpx", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }},
{ &hf_dcerpc_cn_flags_dne,
{ "Did Not Execute", "dcerpc.cn_flags.dne", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }},
{ &hf_dcerpc_cn_flags_maybe,
{ "Maybe", "dcerpc.cn_flags.maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }},
{ &hf_dcerpc_cn_flags_object,
{ "Object", "dcerpc.cn_flags.object", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }},
{ &hf_dcerpc_cn_frag_len,
{ "Frag Length", "dcerpc.cn_frag_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_auth_len,
{ "Auth Length", "dcerpc.cn_auth_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_call_id,
{ "Call ID", "dcerpc.cn_call_id", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_max_xmit,
{ "Max Xmit Frag", "dcerpc.cn_max_xmit", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_max_recv,
{ "Max Recv Frag", "dcerpc.cn_max_recv", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_assoc_group,
{ "Assoc Group", "dcerpc.cn_assoc_group", FT_UINT32, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_num_ctx_items,
{ "Num Ctx Items", "dcerpc.cn_num_ctx_items", FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_ctx_id,
{ "Context ID", "dcerpc.cn_ctx_id", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_num_trans_items,
{ "Num Trans Items", "dcerpc.cn_num_trans_items", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_bind_if_id,
{ "Interface UUID", "dcerpc.cn_bind_to_uuid", FT_STRING, BASE_NONE, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_bind_if_ver,
{ "Interface Ver", "dcerpc.cn_bind_if_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_bind_trans_id,
{ "Transfer Syntax", "dcerpc.cn_bind_trans_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_bind_trans_ver,
{ "Syntax ver", "dcerpc.cn_bind_trans_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_alloc_hint,
{ "Alloc hint", "dcerpc.cn_alloc_hint", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_sec_addr_len,
{ "Scndry Addr len", "dcerpc.cn_sec_addr_len", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_num_results,
{ "Num results", "dcerpc.cn_num_results", FT_UINT8, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_ack_result,
{ "Ack result", "dcerpc.cn_ack_result", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_cn_ack_reason,
{ "Ack reason", "dcerpc.cn_ack_reason", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_flags1,
{ "Flags1", "dcerpc.dg_flags1", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_flags1_rsrvd_01,
{ "Reserved", "dcerpc.dg_flags1_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "" }},
{ &hf_dcerpc_dg_flags1_last_frag,
{ "Last Fragment", "dcerpc.dg_flags1_last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "" }},
{ &hf_dcerpc_dg_flags1_frag,
{ "Fragment", "dcerpc.dg_flags1_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "" }},
{ &hf_dcerpc_dg_flags1_nofack,
{ "No Fack", "dcerpc.dg_flags1_nofack", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "" }},
{ &hf_dcerpc_dg_flags1_maybe,
{ "Maybe", "dcerpc.dg_flags1_maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }},
{ &hf_dcerpc_dg_flags1_idempotent,
{ "Idempotent", "dcerpc.dg_flags1_idempotent", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }},
{ &hf_dcerpc_dg_flags1_broadcast,
{ "Broadcast", "dcerpc.dg_flags1_broadcast", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }},
{ &hf_dcerpc_dg_flags1_rsrvd_80,
{ "Reserved", "dcerpc.dg_flags1_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }},
{ &hf_dcerpc_dg_flags2,
{ "Flags2", "dcerpc.dg_flags2", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_01,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "" }},
{ &hf_dcerpc_dg_flags2_cancel_pending,
{ "Cancel Pending", "dcerpc.dg_flags2_cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_04,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_04", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_08,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_08", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_10,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_10", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_20,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_20", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_40,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_40", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "" }},
{ &hf_dcerpc_dg_flags2_rsrvd_80,
{ "Reserved", "dcerpc.dg_flags2_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "" }},
{ &hf_dcerpc_dg_serial_lo,
{ "Serial Low", "dcerpc.dg_serial_lo", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_serial_hi,
{ "Serial High", "dcerpc.dg_serial_hi", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_ahint,
{ "Activity Hint", "dcerpc.dg_ahint", FT_UINT16, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_ihint,
{ "Interface Hint", "dcerpc.dg_ihint", FT_UINT16, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_frag_len,
{ "Fragment len", "dcerpc.dg_frag_len", FT_UINT16, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_frag_num,
{ "Fragment num", "dcerpc.dg_frag_num", FT_UINT16, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_auth_proto,
{ "Auth proto", "dcerpc.dg_auth_proto", FT_UINT8, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_seqnum,
{ "Sequence num", "dcerpc.dg_seqnum", FT_UINT32, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_server_boot,
{ "Server boot time", "dcerpc.dg_server_boot", FT_UINT32, BASE_HEX, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_if_ver,
{ "Interface Ver", "dcerpc.dg_if_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "" }},
{ &hf_dcerpc_obj_id,
{ "Object", "dcerpc.obj_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_if_id,
{ "Interface", "dcerpc.dg_if_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }},
{ &hf_dcerpc_dg_act_id,
{ "Activitiy", "dcerpc.dg_act_id", FT_STRING, BASE_NONE, NULL, 0x0, "" }},
{ &hf_dcerpc_opnum,
{ "Opnum", "dcerpc.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, "" }},
};
static gint *ett[] = {
&ett_dcerpc,
&ett_dcerpc_cn_flags,
&ett_dcerpc_dg_flags1,
&ett_dcerpc_dg_flags2,
};
proto_dcerpc = proto_register_protocol ("DCE RPC", "DCERPC", "dcerpc");
proto_register_field_array (proto_dcerpc, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
}
void
proto_reg_handoff_dcerpc(void)
{
heur_dissector_add ("tcp", dissect_dcerpc_cn, proto_dcerpc);
heur_dissector_add ("udp", dissect_dcerpc_dg, proto_dcerpc);
}
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