forked from osmocom/wireshark
1249 lines
48 KiB
C
1249 lines
48 KiB
C
/* packet-dcerpc.c
|
|
* Routines for DCERPC packet disassembly
|
|
* Copyright 2001, Todd Sabin <tas@webspan.net>
|
|
*
|
|
* $Id: packet-dcerpc.c,v 1.7 2001/07/11 04:49:34 guy Exp $
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@ethereal.com>
|
|
* 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"
|
|
#include "conversation.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_if_ver_minor = -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_cn_cancel_count = -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;
|
|
|
|
/*
|
|
* Subdissectors
|
|
*/
|
|
|
|
/* the registered subdissectors */
|
|
static GHashTable *dcerpc_uuids;
|
|
|
|
typedef struct _dcerpc_uuid_key {
|
|
e_uuid_t uuid;
|
|
guint16 ver;
|
|
} dcerpc_uuid_key;
|
|
|
|
typedef struct _dcerpc_uuid_value {
|
|
int proto;
|
|
int ett;
|
|
gchar *name;
|
|
dcerpc_sub_dissector *procs;
|
|
} dcerpc_uuid_value;
|
|
|
|
static gint
|
|
dcerpc_uuid_equal (gconstpointer k1, gconstpointer k2)
|
|
{
|
|
dcerpc_uuid_key *key1 = (dcerpc_uuid_key *)k1;
|
|
dcerpc_uuid_key *key2 = (dcerpc_uuid_key *)k2;
|
|
return ((memcmp (&key1->uuid, &key2->uuid, sizeof (e_uuid_t)) == 0)
|
|
&& (key1->ver == key2->ver));
|
|
}
|
|
|
|
static guint
|
|
dcerpc_uuid_hash (gconstpointer k)
|
|
{
|
|
dcerpc_uuid_key *key = (dcerpc_uuid_key *)k;
|
|
/* This isn't perfect, but the Data1 part of these is almost always
|
|
unique. */
|
|
return key->uuid.Data1;
|
|
}
|
|
|
|
void
|
|
dcerpc_init_uuid (int proto, int ett, e_uuid_t *uuid, guint16 ver,
|
|
dcerpc_sub_dissector *procs)
|
|
{
|
|
dcerpc_uuid_key *key = g_malloc (sizeof (*key));
|
|
dcerpc_uuid_value *value = g_malloc (sizeof (*value));
|
|
|
|
key->uuid = *uuid;
|
|
key->ver = ver;
|
|
|
|
value->proto = proto;
|
|
value->ett = ett;
|
|
value->name = proto_get_protocol_short_name (proto);
|
|
value->procs = procs;
|
|
|
|
g_hash_table_insert (dcerpc_uuids, key, value);
|
|
}
|
|
|
|
|
|
/*
|
|
* To keep track of ctx_id mappings. Should really use some
|
|
* generic conversation support instead.
|
|
*/
|
|
static GHashTable *dcerpc_convs;
|
|
|
|
typedef struct _dcerpc_conv_key {
|
|
conversation_t *conv;
|
|
guint16 ctx_id;
|
|
} dcerpc_conv_key;
|
|
|
|
static GMemChunk *dcerpc_conv_key_chunk;
|
|
|
|
typedef struct _dcerpc_conv_value {
|
|
e_uuid_t uuid;
|
|
guint16 ver;
|
|
} dcerpc_conv_value;
|
|
|
|
static GMemChunk *dcerpc_conv_value_chunk;
|
|
|
|
static gint
|
|
dcerpc_conv_equal (gconstpointer k1, gconstpointer k2)
|
|
{
|
|
dcerpc_conv_key *key1 = (dcerpc_conv_key *)k1;
|
|
dcerpc_conv_key *key2 = (dcerpc_conv_key *)k2;
|
|
return (key1->conv == key2->conv
|
|
&& key1->ctx_id == key2->ctx_id);
|
|
}
|
|
|
|
static guint
|
|
dcerpc_conv_hash (gconstpointer k)
|
|
{
|
|
dcerpc_conv_key *key = (dcerpc_conv_key *)k;
|
|
return ((guint)key->conv) + key->ctx_id;
|
|
}
|
|
|
|
|
|
|
|
/*
|
|
* To keep track of callid mappings. Should really use some generic
|
|
* conversation support instead.
|
|
*/
|
|
static GHashTable *dcerpc_calls;
|
|
|
|
typedef struct _dcerpc_call_key {
|
|
conversation_t *conv;
|
|
guint32 call_id;
|
|
} dcerpc_call_key;
|
|
|
|
static GMemChunk *dcerpc_call_key_chunk;
|
|
|
|
typedef struct _dcerpc_call_value {
|
|
e_uuid_t uuid;
|
|
guint16 ver;
|
|
guint16 opnum;
|
|
} dcerpc_call_value;
|
|
|
|
static GMemChunk *dcerpc_call_value_chunk;
|
|
|
|
static gint
|
|
dcerpc_call_equal (gconstpointer k1, gconstpointer k2)
|
|
{
|
|
dcerpc_call_key *key1 = (dcerpc_call_key *)k1;
|
|
dcerpc_call_key *key2 = (dcerpc_call_key *)k2;
|
|
return (key1->conv == key2->conv
|
|
&& key1->call_id == key2->call_id);
|
|
}
|
|
|
|
static guint
|
|
dcerpc_call_hash (gconstpointer k)
|
|
{
|
|
dcerpc_call_key *key = (dcerpc_call_key *)k;
|
|
return ((guint32)key->conv) ^ key->call_id;
|
|
}
|
|
|
|
static void
|
|
dcerpc_call_add_map (guint32 call_id, conversation_t *conv,
|
|
guint16 opnum, guint16 ver, e_uuid_t *uuid)
|
|
{
|
|
dcerpc_call_key *key = g_mem_chunk_alloc (dcerpc_call_key_chunk);
|
|
dcerpc_call_value *value = g_mem_chunk_alloc (dcerpc_call_value_chunk);
|
|
|
|
key->call_id = call_id;
|
|
key->conv = conv;
|
|
value->uuid = *uuid;
|
|
value->ver = ver;
|
|
value->opnum = opnum;
|
|
g_hash_table_insert (dcerpc_calls, key, value);
|
|
}
|
|
|
|
static dcerpc_call_value*
|
|
dcerpc_call_lookup (guint32 call_id, conversation_t *conv)
|
|
{
|
|
dcerpc_call_key key;
|
|
|
|
key.call_id = call_id;
|
|
key.conv = conv;
|
|
return g_hash_table_lookup (dcerpc_calls, &key);
|
|
}
|
|
|
|
|
|
/*
|
|
* Utility functions. Modeled after packet-rpc.c
|
|
*/
|
|
|
|
int
|
|
dissect_dcerpc_uint8 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
|
proto_tree *tree, char *drep,
|
|
int hfindex, guint8 *pdata)
|
|
{
|
|
guint8 data;
|
|
|
|
data = tvb_get_guint8 (tvb, offset);
|
|
if (tree) {
|
|
proto_tree_add_item (tree, hfindex, tvb, offset, 1, (drep[0] & 0x10));
|
|
}
|
|
if (pdata)
|
|
*pdata = data;
|
|
return offset + 1;
|
|
}
|
|
|
|
int
|
|
dissect_dcerpc_uint16 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
|
proto_tree *tree, char *drep,
|
|
int hfindex, guint16 *pdata)
|
|
{
|
|
guint16 data;
|
|
|
|
data = ((drep[0] & 0x10)
|
|
? tvb_get_letohs (tvb, offset)
|
|
: tvb_get_ntohs (tvb, offset));
|
|
|
|
if (tree) {
|
|
proto_tree_add_item (tree, hfindex, tvb, offset, 2, (drep[0] & 0x10));
|
|
}
|
|
if (pdata)
|
|
*pdata = data;
|
|
return offset + 2;
|
|
}
|
|
|
|
int
|
|
dissect_dcerpc_uint32 (tvbuff_t *tvb, gint offset, packet_info *pinfo,
|
|
proto_tree *tree, char *drep,
|
|
int hfindex, guint32 *pdata)
|
|
{
|
|
guint32 data;
|
|
|
|
data = ((drep[0] & 0x10)
|
|
? tvb_get_letohl (tvb, offset)
|
|
: tvb_get_ntohl (tvb, offset));
|
|
|
|
if (tree) {
|
|
proto_tree_add_item (tree, hfindex, tvb, offset, 4, (drep[0] & 0x10));
|
|
}
|
|
if (pdata)
|
|
*pdata = data;
|
|
return offset+4;
|
|
}
|
|
|
|
/*
|
|
* a couple simpler things
|
|
*/
|
|
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 int
|
|
dcerpc_try_handoff (packet_info *pinfo, proto_tree *tree,
|
|
tvbuff_t *tvb, gint offset,
|
|
e_uuid_t *uuid, guint16 ver,
|
|
guint16 opnum, gboolean is_rqst)
|
|
{
|
|
dcerpc_uuid_key key;
|
|
dcerpc_uuid_value *sub_proto;
|
|
proto_item *sub_item;
|
|
proto_tree *sub_tree;
|
|
dcerpc_sub_dissector *proc;
|
|
gchar *name = NULL;
|
|
|
|
key.uuid = *uuid;
|
|
key.ver = ver;
|
|
|
|
|
|
if ((sub_proto = g_hash_table_lookup (dcerpc_uuids, &key)) == 0)
|
|
return -1;
|
|
|
|
if (tree) {
|
|
sub_item = proto_tree_add_item (tree, sub_proto->proto, tvb, offset,
|
|
tvb_length (tvb) - offset, FALSE);
|
|
if (sub_item) {
|
|
sub_tree = proto_item_add_subtree (sub_item, sub_proto->ett);
|
|
}
|
|
|
|
}
|
|
for (proc = sub_proto->procs; proc->name; proc++) {
|
|
if (proc->num == opnum) {
|
|
name = proc->name;
|
|
break;
|
|
}
|
|
}
|
|
|
|
if (!name)
|
|
name = "Unknown?!";
|
|
|
|
if (check_col (pinfo->fd, COL_INFO)) {
|
|
col_add_fstr (pinfo->fd, COL_INFO, "%s %s:%s(...)",
|
|
is_rqst ? "rqst" : "rply",
|
|
sub_proto->name, name);
|
|
}
|
|
|
|
if (check_col (pinfo->fd, COL_PROTOCOL)) {
|
|
col_set_str (pinfo->fd, COL_PROTOCOL, sub_proto->name);
|
|
}
|
|
/* FIXME: call approp. dissector */
|
|
return 0;
|
|
}
|
|
|
|
|
|
/*
|
|
* Connection oriented packet types
|
|
*/
|
|
|
|
static void
|
|
dissect_dcerpc_cn_bind (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
|
|
e_dce_cn_common_hdr_t *hdr)
|
|
{
|
|
conversation_t *conv = NULL;
|
|
dcerpc_conv_key *key;
|
|
dcerpc_conv_value *value;
|
|
guint8 num_ctx_items;
|
|
guint16 ctx_id;
|
|
guint16 num_trans_items;
|
|
e_uuid_t if_id;
|
|
e_uuid_t trans_id;
|
|
guint32 trans_ver;
|
|
guint16 if_ver, if_ver_minor;
|
|
int offset = 16;
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_max_xmit, NULL);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_max_recv, NULL);
|
|
|
|
offset = dissect_dcerpc_uint32 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_assoc_group, NULL);
|
|
|
|
offset = dissect_dcerpc_uint8 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_num_ctx_items, &num_ctx_items);
|
|
|
|
/* padding */
|
|
offset += 3;
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_ctx_id, &ctx_id);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_num_trans_items, &num_trans_items);
|
|
|
|
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &if_id);
|
|
if (dcerpc_tree) {
|
|
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;
|
|
|
|
if (hdr->drep[0] & 0x10) {
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_bind_if_ver, &if_ver);
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_bind_if_ver_minor, &if_ver_minor);
|
|
} else {
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_bind_if_ver_minor, &if_ver_minor);
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_bind_if_ver, &if_ver);
|
|
}
|
|
|
|
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &trans_id);
|
|
if (dcerpc_tree) {
|
|
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;
|
|
|
|
offset = dissect_dcerpc_uint32 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_bind_trans_ver, &trans_ver);
|
|
|
|
if (check_col (pinfo->fd, COL_INFO)) {
|
|
col_add_fstr (pinfo->fd, COL_INFO, "%s: UUID %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x ver %d.%d",
|
|
hdr->ptype == PDU_BIND ? "Bind" : "Alter Ctx",
|
|
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_ver_minor);
|
|
}
|
|
conv = find_conversation (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, 0);
|
|
if (conv == NULL) {
|
|
conv = conversation_new (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, NULL, 0);
|
|
}
|
|
|
|
key = g_mem_chunk_alloc (dcerpc_conv_key_chunk);
|
|
key->conv = conv;
|
|
key->ctx_id = ctx_id;
|
|
|
|
value = g_mem_chunk_alloc (dcerpc_conv_value_chunk);
|
|
value->uuid = if_id;
|
|
value->ver = if_ver;
|
|
|
|
g_hash_table_insert (dcerpc_convs, key, value);
|
|
}
|
|
|
|
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;
|
|
guint16 sec_addr_len;
|
|
guint8 num_results;
|
|
guint16 result = 0;
|
|
guint16 reason = 0;
|
|
|
|
int offset = 16;
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_max_xmit, &max_xmit);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_max_recv, &max_recv);
|
|
|
|
offset = dissect_dcerpc_uint32 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_assoc_group, NULL);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_sec_addr_len, &sec_addr_len);
|
|
offset += sec_addr_len;
|
|
|
|
if (offset % 4) {
|
|
offset += 4 - offset % 4;
|
|
}
|
|
|
|
offset = dissect_dcerpc_uint8 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_num_results, &num_results);
|
|
|
|
/* padding */
|
|
offset += 3;
|
|
|
|
if (num_results == 1) {
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree,
|
|
hdr->drep, hf_dcerpc_cn_ack_result,
|
|
&result);
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree,
|
|
hdr->drep, hf_dcerpc_cn_ack_reason,
|
|
&reason);
|
|
}
|
|
|
|
if (check_col (pinfo->fd, COL_INFO)) {
|
|
if (num_results == 1 && result == 0) {
|
|
col_add_fstr (pinfo->fd, COL_INFO, "%s ack: accept max_xmit: %d max_recv: %d",
|
|
hdr->ptype == PDU_BIND_ACK ? "Bind" : "Alter ctx",
|
|
max_xmit, max_recv);
|
|
} else {
|
|
/* FIXME: should put in reason */
|
|
col_add_fstr (pinfo->fd, COL_INFO, "%s ack: %s",
|
|
hdr->ptype == PDU_BIND_ACK ? "Bind" : "Alter ctx",
|
|
result == 1 ? "User reject" :
|
|
result == 2 ? "Provider reject" :
|
|
"Unknown");
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_dcerpc_cn_rqst (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
|
|
proto_tree *tree, e_dce_cn_common_hdr_t *hdr)
|
|
{
|
|
conversation_t *conv;
|
|
guint16 ctx_id;
|
|
guint16 opnum;
|
|
e_uuid_t obj_id;
|
|
|
|
int offset = 16;
|
|
|
|
offset = dissect_dcerpc_uint32 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_alloc_hint, NULL);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_ctx_id, &ctx_id);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_opnum, &opnum);
|
|
|
|
if (hdr->flags & 0x80) {
|
|
dcerpc_tvb_get_uuid (tvb, offset, hdr->drep, &obj_id);
|
|
if (dcerpc_tree) {
|
|
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;
|
|
}
|
|
|
|
if (check_col (pinfo->fd, COL_INFO)) {
|
|
col_add_fstr (pinfo->fd, COL_INFO, "Request: opnum: %d ctx_id:%d",
|
|
opnum, ctx_id);
|
|
}
|
|
|
|
conv = find_conversation (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, 0);
|
|
if (!conv) {
|
|
|
|
} else {
|
|
dcerpc_conv_key key;
|
|
dcerpc_conv_value *value;
|
|
|
|
key.conv = conv;
|
|
key.ctx_id = ctx_id;
|
|
|
|
value = g_hash_table_lookup (dcerpc_convs, &key);
|
|
if (value) {
|
|
/* add an entry for this call, so we can catch the reply */
|
|
dcerpc_call_add_map (hdr->call_id, conv, opnum,
|
|
value->ver, &value->uuid);
|
|
|
|
/* handoff this call */
|
|
dcerpc_try_handoff (pinfo, tree, tvb, offset,
|
|
&value->uuid, value->ver,
|
|
opnum, TRUE);
|
|
}
|
|
}
|
|
}
|
|
|
|
static void
|
|
dissect_dcerpc_cn_resp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *dcerpc_tree,
|
|
proto_tree *tree, e_dce_cn_common_hdr_t *hdr)
|
|
{
|
|
conversation_t *conv;
|
|
guint16 ctx_id;
|
|
|
|
int offset = 16;
|
|
|
|
offset = dissect_dcerpc_uint32 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_alloc_hint, NULL);
|
|
|
|
offset = dissect_dcerpc_uint16 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_ctx_id, &ctx_id);
|
|
|
|
offset = dissect_dcerpc_uint8 (tvb, offset, pinfo, dcerpc_tree, hdr->drep,
|
|
hf_dcerpc_cn_cancel_count, NULL);
|
|
/* padding */
|
|
offset++;
|
|
|
|
if (check_col (pinfo->fd, COL_INFO)) {
|
|
col_add_fstr (pinfo->fd, COL_INFO, "Response: call_id: %d ctx_id:%d",
|
|
hdr->call_id, ctx_id);
|
|
}
|
|
|
|
conv = find_conversation (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, 0);
|
|
if (!conv) {
|
|
/* no point in creating one here, really */
|
|
} else {
|
|
dcerpc_call_value *value = dcerpc_call_lookup (hdr->call_id, conv);
|
|
if (value) {
|
|
dcerpc_try_handoff (pinfo, tree, tvb, offset,
|
|
&value->uuid, value->ver,
|
|
value->opnum, FALSE);
|
|
}
|
|
}
|
|
}
|
|
|
|
/*
|
|
* 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:
|
|
case PDU_ALTER:
|
|
dissect_dcerpc_cn_bind (tvb, pinfo, dcerpc_tree, &hdr);
|
|
break;
|
|
|
|
case PDU_BIND_ACK:
|
|
case PDU_ALTER_ACK:
|
|
dissect_dcerpc_cn_bind_ack (tvb, pinfo, dcerpc_tree, &hdr);
|
|
break;
|
|
|
|
case PDU_REQ:
|
|
dissect_dcerpc_cn_rqst (tvb, pinfo, dcerpc_tree, tree, &hdr);
|
|
break;
|
|
|
|
case PDU_RESP:
|
|
dissect_dcerpc_cn_resp (tvb, pinfo, dcerpc_tree, 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;
|
|
conversation_t *conv;
|
|
|
|
/*
|
|
* 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++;
|
|
}
|
|
/*
|
|
* keeping track of the conversation shouldn't really be necessary
|
|
* for connectionless packets, because everything we need to know
|
|
* to dissect is in the header for each packet. Unfortunately,
|
|
* Microsoft's implementation is buggy and often puts the
|
|
* completely wrong if_id in the header. go figure. So, keep
|
|
* track of the seqnum and use that if possible. Note: that's not
|
|
* completely correct. It should really be done based on both the
|
|
* activity_id and seqnum. I haven't seen anywhere that it would
|
|
* make a difference, but for future reference...
|
|
*/
|
|
conv = find_conversation (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, 0);
|
|
if (!conv) {
|
|
conv = conversation_new (&pinfo->src, &pinfo->dst, pinfo->ptype,
|
|
pinfo->srcport, pinfo->destport, NULL, 0);
|
|
}
|
|
|
|
/*
|
|
* Packet type specific stuff is next.
|
|
*/
|
|
switch (hdr.ptype) {
|
|
case PDU_REQ:
|
|
dcerpc_call_add_map (hdr.seqnum, conv, hdr.opnum,
|
|
hdr.if_ver, &hdr.if_id);
|
|
dcerpc_try_handoff (pinfo, tree, tvb, offset,
|
|
&hdr.if_id, hdr.if_ver, hdr.opnum, TRUE);
|
|
break;
|
|
case PDU_RESP:
|
|
{
|
|
dcerpc_call_value *v = dcerpc_call_lookup (hdr.seqnum, conv);
|
|
if (v) {
|
|
dcerpc_try_handoff (pinfo, tree, tvb, offset,
|
|
&v->uuid, v->ver, v->opnum, FALSE);
|
|
} else {
|
|
dcerpc_try_handoff (pinfo, tree, tvb, offset,
|
|
&hdr.if_id, hdr.if_ver, hdr.opnum, FALSE);
|
|
}
|
|
}
|
|
break;
|
|
}
|
|
|
|
return TRUE;
|
|
}
|
|
|
|
static void
|
|
dcerpc_init_protocol (void)
|
|
{
|
|
if (dcerpc_convs)
|
|
g_hash_table_destroy (dcerpc_convs);
|
|
if (dcerpc_calls)
|
|
g_hash_table_destroy (dcerpc_calls);
|
|
if (dcerpc_conv_key_chunk)
|
|
g_mem_chunk_destroy (dcerpc_conv_key_chunk);
|
|
if (dcerpc_conv_value_chunk)
|
|
g_mem_chunk_destroy (dcerpc_conv_value_chunk);
|
|
if (dcerpc_call_key_chunk)
|
|
g_mem_chunk_destroy (dcerpc_call_key_chunk);
|
|
if (dcerpc_call_value_chunk)
|
|
g_mem_chunk_destroy (dcerpc_call_value_chunk);
|
|
|
|
dcerpc_convs = g_hash_table_new (dcerpc_conv_hash, dcerpc_conv_equal);
|
|
dcerpc_calls = g_hash_table_new (dcerpc_call_hash, dcerpc_call_equal);
|
|
dcerpc_conv_key_chunk = g_mem_chunk_new ("dcerpc_conv_key_chunk",
|
|
sizeof (dcerpc_conv_key),
|
|
200 * sizeof (dcerpc_conv_key),
|
|
G_ALLOC_ONLY);
|
|
dcerpc_conv_value_chunk = g_mem_chunk_new ("dcerpc_conv_value_chunk",
|
|
sizeof (dcerpc_conv_value),
|
|
200 * sizeof (dcerpc_conv_value),
|
|
G_ALLOC_ONLY);
|
|
dcerpc_call_key_chunk = g_mem_chunk_new ("dcerpc_call_key_chunk",
|
|
sizeof (dcerpc_call_key),
|
|
200 * sizeof (dcerpc_call_key),
|
|
G_ALLOC_ONLY);
|
|
dcerpc_call_value_chunk = g_mem_chunk_new ("dcerpc_call_value_chunk",
|
|
sizeof (dcerpc_call_value),
|
|
200 * sizeof (dcerpc_call_value),
|
|
G_ALLOC_ONLY);
|
|
}
|
|
|
|
void
|
|
proto_register_dcerpc (void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_dcerpc_ver,
|
|
{ "Version", "dcerpc.ver", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_ver_minor,
|
|
{ "Version (minor)", "dcerpc.ver_minor", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_packet_type,
|
|
{ "Packet type", "dcerpc.pkt_type", FT_UINT8, BASE_HEX, VALS (pckt_vals), 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags,
|
|
{ "Packet Flags", "dcerpc.cn_flags", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_first_frag,
|
|
{ "First Frag", "dcerpc.cn_flags.first_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x1, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_last_frag,
|
|
{ "Last Frag", "dcerpc.cn_flags.last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x2, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_cancel_pending,
|
|
{ "Cancel Pending", "dcerpc.cn_flags.cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x4, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_reserved,
|
|
{ "Reserved", "dcerpc.cn_flags.reserved", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x8, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_mpx,
|
|
{ "Multiplex", "dcerpc.cn_flags.mpx", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_dne,
|
|
{ "Did Not Execute", "dcerpc.cn_flags.dne", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_maybe,
|
|
{ "Maybe", "dcerpc.cn_flags.maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_dcerpc_cn_flags_object,
|
|
{ "Object", "dcerpc.cn_flags.object", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_dcerpc_cn_frag_len,
|
|
{ "Frag Length", "dcerpc.cn_frag_len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_auth_len,
|
|
{ "Auth Length", "dcerpc.cn_auth_len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_call_id,
|
|
{ "Call ID", "dcerpc.cn_call_id", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_max_xmit,
|
|
{ "Max Xmit Frag", "dcerpc.cn_max_xmit", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_max_recv,
|
|
{ "Max Recv Frag", "dcerpc.cn_max_recv", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_assoc_group,
|
|
{ "Assoc Group", "dcerpc.cn_assoc_group", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_num_ctx_items,
|
|
{ "Num Ctx Items", "dcerpc.cn_num_ctx_items", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_ctx_id,
|
|
{ "Context ID", "dcerpc.cn_ctx_id", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_num_trans_items,
|
|
{ "Num Trans Items", "dcerpc.cn_num_trans_items", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_bind_if_id,
|
|
{ "Interface UUID", "dcerpc.cn_bind_to_uuid", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_bind_if_ver,
|
|
{ "Interface Ver", "dcerpc.cn_bind_if_ver", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_bind_if_ver_minor,
|
|
{ "Interface Ver Minor", "dcerpc.cn_bind_if_ver_minor", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_bind_trans_id,
|
|
{ "Transfer Syntax", "dcerpc.cn_bind_trans_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_bind_trans_ver,
|
|
{ "Syntax ver", "dcerpc.cn_bind_trans_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_alloc_hint,
|
|
{ "Alloc hint", "dcerpc.cn_alloc_hint", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_sec_addr_len,
|
|
{ "Scndry Addr len", "dcerpc.cn_sec_addr_len", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_num_results,
|
|
{ "Num results", "dcerpc.cn_num_results", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_ack_result,
|
|
{ "Ack result", "dcerpc.cn_ack_result", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_ack_reason,
|
|
{ "Ack reason", "dcerpc.cn_ack_reason", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_cn_cancel_count,
|
|
{ "Cancel count", "dcerpc.cn_cancel_count", FT_UINT8, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1,
|
|
{ "Flags1", "dcerpc.dg_flags1", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_rsrvd_01,
|
|
{ "Reserved", "dcerpc.dg_flags1_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_last_frag,
|
|
{ "Last Fragment", "dcerpc.dg_flags1_last_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_frag,
|
|
{ "Fragment", "dcerpc.dg_flags1_frag", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_nofack,
|
|
{ "No Fack", "dcerpc.dg_flags1_nofack", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_maybe,
|
|
{ "Maybe", "dcerpc.dg_flags1_maybe", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_idempotent,
|
|
{ "Idempotent", "dcerpc.dg_flags1_idempotent", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_broadcast,
|
|
{ "Broadcast", "dcerpc.dg_flags1_broadcast", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags1_rsrvd_80,
|
|
{ "Reserved", "dcerpc.dg_flags1_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2,
|
|
{ "Flags2", "dcerpc.dg_flags2", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_01,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_01", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x01, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_cancel_pending,
|
|
{ "Cancel Pending", "dcerpc.dg_flags2_cancel_pending", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x02, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_04,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_04", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x04, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_08,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_08", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x08, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_10,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_10", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x10, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_20,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_20", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x20, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_40,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_40", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x40, "", HFILL }},
|
|
{ &hf_dcerpc_dg_flags2_rsrvd_80,
|
|
{ "Reserved", "dcerpc.dg_flags2_rsrvd_80", FT_BOOLEAN, 8, TFS (&flags_set_truth), 0x80, "", HFILL }},
|
|
{ &hf_dcerpc_dg_serial_lo,
|
|
{ "Serial Low", "dcerpc.dg_serial_lo", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_serial_hi,
|
|
{ "Serial High", "dcerpc.dg_serial_hi", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_ahint,
|
|
{ "Activity Hint", "dcerpc.dg_ahint", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_ihint,
|
|
{ "Interface Hint", "dcerpc.dg_ihint", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_frag_len,
|
|
{ "Fragment len", "dcerpc.dg_frag_len", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_frag_num,
|
|
{ "Fragment num", "dcerpc.dg_frag_num", FT_UINT16, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_auth_proto,
|
|
{ "Auth proto", "dcerpc.dg_auth_proto", FT_UINT8, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_seqnum,
|
|
{ "Sequence num", "dcerpc.dg_seqnum", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_server_boot,
|
|
{ "Server boot time", "dcerpc.dg_server_boot", FT_UINT32, BASE_HEX, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_if_ver,
|
|
{ "Interface Ver", "dcerpc.dg_if_ver", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_obj_id,
|
|
{ "Object", "dcerpc.obj_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_if_id,
|
|
{ "Interface", "dcerpc.dg_if_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_dg_act_id,
|
|
{ "Activitiy", "dcerpc.dg_act_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
|
|
{ &hf_dcerpc_opnum,
|
|
{ "Opnum", "dcerpc.opnum", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
|
|
|
|
|
|
};
|
|
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));
|
|
register_init_routine (dcerpc_init_protocol);
|
|
|
|
dcerpc_uuids = g_hash_table_new (dcerpc_uuid_hash, dcerpc_uuid_equal);
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_dcerpc (void)
|
|
{
|
|
heur_dissector_add ("tcp", dissect_dcerpc_cn, proto_dcerpc);
|
|
heur_dissector_add ("udp", dissect_dcerpc_dg, proto_dcerpc);
|
|
}
|