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/* packet-dcerpc-epm.c
* Routines for dcerpc endpoint mapper dissection
* Copyright 2001, Todd Sabin <tas@webspan.net>
*
* $Id: packet-dcerpc-epm.c,v 1.14 2002/08/28 21:00:09 jmayer 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
#include <string.h>
#include <glib.h>
#include <epan/packet.h>
#include "packet-dcerpc.h"
static int proto_epm = -1;
static int hf_epm_opnum = -1;
static int hf_epm_inquiry_type = -1;
static int hf_epm_object_p = -1;
static int hf_epm_object = -1;
static int hf_epm_if_id_p = -1;
static int hf_epm_if_id = -1;
static int hf_epm_ver_maj = -1;
static int hf_epm_ver_min = -1;
static int hf_epm_ver_opt = -1;
static int hf_epm_hnd = -1;
static int hf_epm_max_ents = -1;
static int hf_epm_num_ents = -1;
static int hf_epm_uuid = -1;
static int hf_epm_tower_length = -1;
static int hf_epm_tower_data = -1;
static int hf_epm_max_towers = -1;
static int hf_epm_num_towers = -1;
static int hf_epm_rc = -1;
static int hf_epm_tower_num_floors = -1;
static int hf_epm_tower_rhs_len = -1;
static int hf_epm_tower_lhs_len = -1;
static int hf_epm_tower_proto_id = -1;
static gint ett_epm = -1;
static gint ett_epm_tower_floor = -1;
static e_uuid_t uuid_epm = { 0xe1af8308, 0x5d1f, 0x11c9, { 0x91, 0xa4, 0x08, 0x00, 0x2b, 0x14, 0xa0, 0xfa } };
static guint16 ver_epm = 3;
static int
epm_dissect_ept_lookup_rqst (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
guint32 dummy;
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_inquiry_type, NULL);
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_object_p, &dummy);
if (dummy) {
offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
hf_epm_object, NULL);
}
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_if_id_p, &dummy);
if (dummy) {
offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
hf_epm_if_id, NULL);
offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
hf_epm_ver_maj, NULL);
offset = dissect_ndr_uint16 (tvb, offset, pinfo, tree, drep,
hf_epm_ver_min, NULL);
}
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_ver_opt, NULL);
if (tree) {
proto_tree_add_bytes (tree, hf_epm_hnd, tvb, offset, 20,
tvb_get_ptr (tvb, offset, 20));
}
offset += 20;
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_max_ents, NULL);
return offset;
}
static int
epm_dissect_ept_lookup_resp (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
hf_epm_hnd, NULL);
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_num_ents, NULL);
/* FIXME: more to do here */
return offset;
}
#if 0
static int
epm_dissect_uuid (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
offset = dissect_ndr_uuid_t (tvb, offset, pinfo, tree, drep,
hf_epm_uuid, NULL);
return offset;
}
#endif
static const value_string proto_id_vals[] = {
{ 0x00, "OSI OID"},
{ 0x0d, "UUID"},
{ 0x05, "OSI TP4"},
{ 0x06, "OSI CLNS or DNA Routing"},
{ 0x07, "DOD TCP"},
{ 0x08, "DOD UDP"},
{ 0x09, "DOD IP"},
{ 0x0a, "RPC connectionless protocol"},
{ 0x0b, "RPC connection-oriented protocol"},
{ 0x02, "DNA Session Control"},
{ 0x03, "DNA Session Control V3"},
{ 0x04, "DNA NSP Transport"},
{ 0x10, "Named Pipes"},
{ 0x11, "NetBIOS"},
{ 0x12, "NetBEUI"},
{ 0x13, "Netware SPX"},
{ 0x14, "Netware IPX"},
{ 0x16, "Appletalk Stream"},
{ 0x17, "Appletalk Datagram"},
{ 0x18, "Appletalk"},
{ 0x19, "NetBIOS"},
{ 0x1a, "Vines SPP"},
{ 0x1b, "Vines IPC"},
{ 0x1c, "StreetTalk"},
{ 0x20, "Unix Domain Socket"},
{ 0x21, "null"},
{ 0x22, "NetBIOS"},
{ 0, NULL},
};
/* XXX this function assumes LE encoding. can not use the NDR routines
since they assume padding.
*/
static int
epm_dissect_tower_data (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
guint16 num_floors, i;
dcerpc_info *di;
di=pinfo->private_data;
if(di->conformant_run){
return offset;
}
num_floors = tvb_get_letohs(tvb, offset);
proto_tree_add_uint(tree, hf_epm_tower_num_floors, tvb, offset, 2, num_floors);
offset += 2;
for(i=1;i<=num_floors;i++){
proto_item *it = NULL;
proto_tree *tr = NULL;
int old_offset = offset;
guint16 len;
guint8 proto_id;
e_uuid_t uuid;
it = proto_tree_add_text(tree, tvb, offset, 0, "Floor %d", i);
tr = proto_item_add_subtree(it, ett_epm_tower_floor);
len = tvb_get_letohs(tvb, offset);
proto_tree_add_uint(tr, hf_epm_tower_lhs_len, tvb, offset, 2, len);
offset += 2;
proto_id = tvb_get_guint8(tvb, offset);
proto_tree_add_uint(tr, hf_epm_tower_proto_id, tvb, offset, 1, proto_id);
switch(proto_id){
case 0x0d: /* UUID */
dcerpc_tvb_get_uuid (tvb, offset+1, drep, &uuid);
proto_tree_add_string_format (tr, hf_epm_uuid, tvb, offset+1, 16, "",
"UUID: %08x-%04x-%04x-%02x%02x-%02x%02x%02x%02x%02x%02x",
uuid.Data1, uuid.Data2, uuid.Data3,
uuid.Data4[0], uuid.Data4[1],
uuid.Data4[2], uuid.Data4[3],
uuid.Data4[4], uuid.Data4[5],
uuid.Data4[6], uuid.Data4[7]);
proto_tree_add_text(tr, tvb, offset+17, 2, "Version %d.%d", tvb_get_guint8(tvb, offset+18), tvb_get_guint8(tvb, offset+17));
break;
}
offset += len;
len = tvb_get_letohs(tvb, offset);
proto_tree_add_uint(tr, hf_epm_tower_rhs_len, tvb, offset, 2, len);
offset += 2;
switch(proto_id){
case 0x07: /* TCP this one is always big endian */
proto_tree_add_text(tr, tvb, offset, 2, "TCP Port: %d", tvb_get_ntohs(tvb, offset));
break;
case 0x08: /* UDP this one is always big endian */
proto_tree_add_text(tr, tvb, offset, 2, "UDP Port: %d", tvb_get_ntohs(tvb, offset));
break;
case 0x09: /* IP this one is always big endian */
proto_tree_add_text(tr, tvb, offset, 4, "IP address: %s", ip_to_str(tvb_get_ptr(tvb, offset, 4)));
break;
default:
if(len){
proto_tree_add_text(tr, tvb, offset, len, "not decoded yet");
}
}
offset += len;
proto_item_set_len(it, offset-old_offset);
}
return offset;
}
/* typedef struct {
unsigned int tower_len,
[size_is(tower_len)] char tower[];
} twr_t, *twr_p_t;
*/
static int
epm_dissect_tower (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
guint32 len;
dcerpc_info *di;
di=pinfo->private_data;
if(di->conformant_run){
return offset;
}
/* first one is the header of the conformant array, second one is the
length field */
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_tower_length, &len);
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_tower_length, NULL);
offset = epm_dissect_tower_data(tvb, offset, pinfo, tree, drep);
return offset;
}
static int
epm_dissect_tower_pointer (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
epm_dissect_tower, NDR_POINTER_PTR,
"Tower pointer:", -1, 1);
return offset;
}
static int
epm_dissect_tower_array (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
offset = dissect_ndr_ucvarray(tvb, offset, pinfo, tree, drep,
epm_dissect_tower_pointer);
return offset;
}
static int
epm_dissect_ept_map_rqst (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
/* [in] handle_t h */
offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
hf_epm_hnd, NULL);
#if 0
/* according to opengroup we should have an uuid pointer here.
in my w2k captures i can not see any such thing */
/* [in, ptr] uuid_p_t object */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
epm_dissect_uuid, NDR_POINTER_PTR,
"UUID pointer:", -1, 1);
#endif
/* [in, ptr] twr_p_t map_tower */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
epm_dissect_tower, NDR_POINTER_PTR,
"Tower pointer:", -1, 1);
/* [in, out] ept_lookup_handle_t *entry_handle */
offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
hf_epm_hnd, NULL);
/* [in] unsigned32 max_towers */
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_max_towers, NULL);
return offset;
}
static int
epm_dissect_ept_map_resp (tvbuff_t *tvb, int offset,
packet_info *pinfo, proto_tree *tree,
char *drep)
{
/* [in, out] ept_lookup_handle_t *entry_handle */
offset = dissect_ndr_ctx_hnd (tvb, offset, pinfo, tree, drep,
hf_epm_hnd, NULL);
/* [out, ptr] unsigned32 *num_towers */
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_num_towers, NULL);
/* [out, length_is(*num_towers), size_is(max_towers), ptr] twr_p_t towers[] */
offset = dissect_ndr_pointer(tvb, offset, pinfo, tree, drep,
epm_dissect_tower_array, NDR_POINTER_REF,
"Tower array:", -1, 1);
/* [out] error_status_t *status */
offset = dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_epm_rc, NULL);
return offset;
}
static dcerpc_sub_dissector epm_dissectors[] = {
{ 0, "ept_insert", NULL, NULL },
{ 1, "ept_delete", NULL, NULL },
{ 2, "ept_lookup",
epm_dissect_ept_lookup_rqst,
epm_dissect_ept_lookup_resp },
{ 3, "Map",
epm_dissect_ept_map_rqst,
epm_dissect_ept_map_resp },
{ 4, "ept_lookup_handle_free", NULL, NULL },
{ 5, "ept_inq_object", NULL, NULL },
{ 6, "ept_mgmt_delete", NULL, NULL },
{ 0, NULL, NULL, NULL }
};
static const value_string epm_opnum_vals[] = {
{ 0, "insert" },
{ 1, "delete" },
{ 2, "lookup" },
{ 3, "map" },
{ 4, "lookup_handle_free" },
{ 5, "inq_object" },
{ 6, "mgmt_delete" },
{ 0, NULL }
};
void
proto_register_epm (void)
{
static hf_register_info hf[] = {
{ &hf_epm_opnum,
{ "Operation", "epm.opnum", FT_UINT16, BASE_DEC,
VALS(epm_opnum_vals), 0x0, "Operation", HFILL }},
{ &hf_epm_inquiry_type,
{ "Inquiry type", "epm.inq_type", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_object_p,
{ "Object pointer", "epm.object_p", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_object,
{ "Object", "epm.object", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
{ &hf_epm_if_id_p,
{ "Interface pointer", "epm.if_id_p", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_if_id,
{ "Interface", "epm.if_id", FT_STRING, BASE_NONE, NULL, 0x0, "", HFILL }},
{ &hf_epm_ver_maj,
{ "Version Major", "epm.ver_maj", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_ver_min,
{ "Version Minor", "epm.ver_min", FT_UINT16, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_ver_opt,
{ "Version Option", "epm.ver_opt", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_hnd,
{ "Handle", "epm.hnd", FT_BYTES, BASE_NONE, NULL, 0x0, "Context handle", HFILL }},
{ &hf_epm_max_ents,
{ "Max entries", "epm.max_ents", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_num_ents,
{ "Num entries", "epm.num_ents", FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL }},
{ &hf_epm_uuid,
{ "UUID", "epm.uuid", FT_STRING, BASE_NONE, NULL, 0x0, "UUID", HFILL }},
{ &hf_epm_tower_length,
{ "Length", "epm.tower.len", FT_UINT32, BASE_DEC, NULL, 0x0, "Length of tower data", HFILL }},
{ &hf_epm_tower_data,
{ "Tower", "epm.tower", FT_BYTES, BASE_HEX, NULL, 0x0, "Tower data", HFILL }},
{ &hf_epm_max_towers,
{ "Max Towers", "epm.max_towers", FT_UINT32, BASE_DEC, NULL, 0x0, "Maximum number of towers to return", HFILL }},
{ &hf_epm_num_towers,
{ "Num Towers", "epm.num_towers", FT_UINT32, BASE_DEC, NULL, 0x0, "Number number of towers to return", HFILL }},
{ &hf_epm_rc,
{ "Return code", "epm.rc", FT_UINT32, BASE_HEX, NULL, 0x0, "EPM return value", HFILL }},
{ &hf_epm_tower_num_floors,
{ "Number of floors", "epm.tower.num_floors", FT_UINT16, BASE_DEC, NULL, 0x0, "Number of floors in tower", HFILL }},
{ &hf_epm_tower_rhs_len,
{ "RHS Length", "epm.tower.rhs.len", FT_UINT16, BASE_DEC, NULL, 0x0, "Length of RHS data", HFILL }},
{ &hf_epm_tower_lhs_len,
{ "LHS Length", "epm.tower.lhs.len", FT_UINT16, BASE_DEC, NULL, 0x0, "Length of LHS data", HFILL }},
{ &hf_epm_tower_proto_id,
{ "Protocol", "epm.tower.proto_id", FT_UINT8, BASE_HEX, VALS(proto_id_vals), 0x0, "Protocol identifier", HFILL }}
};
static gint *ett[] = {
&ett_epm,
&ett_epm_tower_floor
};
proto_epm = proto_register_protocol ("DCE/RPC Endpoint Mapper", "EPM", "epm");
proto_register_field_array (proto_epm, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
}
void
proto_reg_handoff_epm (void)
{
/* Register the protocol as dcerpc */
dcerpc_init_uuid (proto_epm, ett_epm, &uuid_epm, ver_epm, epm_dissectors, hf_epm_opnum);
}
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