![Guy Harris](/assets/img/avatar_default.png)
dissector for indirect replies that looks up the call. Use them in the portmapper/RPCBIND dissector. svn path=/trunk/; revision=3008
521 lines
14 KiB
C
521 lines
14 KiB
C
/* packet-portmap.c
|
|
* Routines for portmap dissection
|
|
*
|
|
* $Id: packet-portmap.c,v 1.28 2001/02/09 07:59:00 guy Exp $
|
|
*
|
|
* Ethereal - Network traffic analyzer
|
|
* By Gerald Combs <gerald@zing.org>
|
|
* Copyright 1998 Gerald Combs
|
|
*
|
|
* Copied from packet-smb.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.
|
|
*/
|
|
|
|
#ifdef HAVE_CONFIG_H
|
|
#include "config.h"
|
|
#endif
|
|
|
|
|
|
#ifdef HAVE_SYS_TYPES_H
|
|
#include <sys/types.h>
|
|
#endif
|
|
|
|
|
|
#include "packet-rpc.h"
|
|
#include "packet-portmap.h"
|
|
|
|
/*
|
|
* See:
|
|
*
|
|
* RFC 1833, "Binding Protocols for ONC RPC Version 2".
|
|
*/
|
|
|
|
static int proto_portmap = -1;
|
|
static int hf_portmap_proto = -1;
|
|
static int hf_portmap_prog = -1;
|
|
static int hf_portmap_proc = -1;
|
|
static int hf_portmap_version = -1;
|
|
static int hf_portmap_port = -1;
|
|
static int hf_portmap_answer = -1;
|
|
static int hf_portmap_args = -1;
|
|
static int hf_portmap_result = -1;
|
|
static int hf_portmap_rpcb = -1;
|
|
static int hf_portmap_rpcb_prog = -1;
|
|
static int hf_portmap_rpcb_version = -1;
|
|
static int hf_portmap_rpcb_netid = -1;
|
|
static int hf_portmap_rpcb_addr = -1;
|
|
static int hf_portmap_rpcb_owner = -1;
|
|
static int hf_portmap_uaddr = -1;
|
|
|
|
|
|
static gint ett_portmap = -1;
|
|
static gint ett_portmap_rpcb = -1;
|
|
static gint ett_portmap_entry = -1;
|
|
|
|
|
|
/* Dissect a getport call */
|
|
int dissect_getport_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 proto;
|
|
guint32 prog;
|
|
|
|
if ( tree )
|
|
{
|
|
prog = tvb_get_ntohl(tvb, offset+0);
|
|
proto_tree_add_uint_format(tree, hf_portmap_prog, tvb,
|
|
offset, 4, prog, "Program: %s (%u)",
|
|
rpc_prog_name(prog), prog);
|
|
proto_tree_add_item(tree, hf_portmap_version, tvb,
|
|
offset+4, 4, FALSE);
|
|
|
|
proto = tvb_get_ntohl(tvb, offset+8);
|
|
proto_tree_add_uint_format(tree, hf_portmap_proto, tvb,
|
|
offset+8, 4, proto, "Proto: %s (%u)", ipprotostr(proto), proto);
|
|
|
|
proto_tree_add_item(tree, hf_portmap_port, tvb,
|
|
offset+12, 4, FALSE);
|
|
}
|
|
|
|
return offset+16;
|
|
}
|
|
|
|
int dissect_getport_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpc_uint32_tvb(tvb, pinfo, tree, hf_portmap_port,
|
|
offset);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissect a 'set' call */
|
|
int dissect_set_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 proto;
|
|
guint32 prog;
|
|
|
|
if ( tree )
|
|
{
|
|
prog = tvb_get_ntohl(tvb, offset+0);
|
|
proto_tree_add_uint_format(tree, hf_portmap_prog, tvb,
|
|
offset, 4, prog, "Program: %s (%d)",
|
|
rpc_prog_name(prog), prog);
|
|
proto_tree_add_item(tree, hf_portmap_version, tvb,
|
|
offset+4, 4, FALSE);
|
|
|
|
proto = tvb_get_ntohl(tvb, offset+8);
|
|
proto_tree_add_uint_format(tree, hf_portmap_proto,tvb,
|
|
offset+8, 4, proto, "Proto: %s (%d)", ipprotostr(proto), proto);
|
|
|
|
proto_tree_add_item(tree, hf_portmap_port, tvb,
|
|
offset+12, 4, FALSE);
|
|
}
|
|
|
|
return offset+16;
|
|
}
|
|
|
|
/* Dissect a 'unset' call */
|
|
int dissect_unset_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 proto;
|
|
guint32 prog;
|
|
|
|
if ( tree )
|
|
{
|
|
prog = tvb_get_ntohl(tvb, offset+0);
|
|
proto_tree_add_uint_format(tree, hf_portmap_prog, tvb,
|
|
offset, 4, prog, "Program: %s (%d)",
|
|
rpc_prog_name(prog), prog);
|
|
proto_tree_add_item(tree, hf_portmap_version, tvb,
|
|
offset+4, 4, FALSE);
|
|
|
|
proto = tvb_get_ntohl(tvb, offset+8);
|
|
proto_tree_add_uint(tree, hf_portmap_proto, tvb,
|
|
offset+8, 4, proto);
|
|
|
|
proto_tree_add_item(tree, hf_portmap_port, tvb,
|
|
offset+12, 4, FALSE);
|
|
}
|
|
|
|
return offset+16;
|
|
}
|
|
|
|
int dissect_set_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpc_bool_tvb(tvb, pinfo, tree, hf_portmap_answer,
|
|
offset);
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_dump_entry(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
int prog, version, proto, port;
|
|
proto_item *ti, *subtree;
|
|
|
|
prog = tvb_get_ntohl(tvb, offset+0);
|
|
version = tvb_get_ntohl(tvb, offset+4);
|
|
proto = tvb_get_ntohl(tvb, offset+8);
|
|
port = tvb_get_ntohl(tvb, offset+12);
|
|
if ( tree )
|
|
{
|
|
ti = proto_tree_add_text(tree, tvb, offset, 16,
|
|
"Map Entry: %s (%u) V%d",
|
|
rpc_prog_name(prog), prog, version);
|
|
subtree = proto_item_add_subtree(ti, ett_portmap_entry);
|
|
|
|
proto_tree_add_uint_format(subtree, hf_portmap_prog, tvb,
|
|
offset+0, 4, prog,
|
|
"Program: %s (%u)", rpc_prog_name(prog), prog);
|
|
proto_tree_add_uint(subtree, hf_portmap_version, tvb,
|
|
offset+4, 4, version);
|
|
proto_tree_add_uint_format(subtree, hf_portmap_proto, tvb,
|
|
offset+8, 4, proto,
|
|
"Protocol: %s (0x%02x)", ipprotostr(proto), proto);
|
|
proto_tree_add_uint(subtree, hf_portmap_port, tvb,
|
|
offset+12, 4, port);
|
|
}
|
|
offset += 16;
|
|
return offset;
|
|
}
|
|
|
|
int dissect_dump_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpc_list_tvb(tvb, pinfo, tree, offset,
|
|
dissect_dump_entry);
|
|
return offset;
|
|
}
|
|
|
|
/* Dissect a callit call */
|
|
int dissect_callit_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
guint32 prog, vers, proc;
|
|
|
|
prog = tvb_get_ntohl(tvb, offset+0);
|
|
if ( tree )
|
|
{
|
|
proto_tree_add_uint_format(tree, hf_portmap_prog, tvb,
|
|
offset, 4, prog, "Program: %s (%u)",
|
|
rpc_prog_name(prog), prog);
|
|
}
|
|
|
|
vers = tvb_get_ntohl(tvb, offset+4);
|
|
if ( tree )
|
|
{
|
|
proto_tree_add_uint(tree, hf_portmap_version, tvb,
|
|
offset+4, 4, vers);
|
|
}
|
|
|
|
proc = tvb_get_ntohl(tvb, offset+8);
|
|
if ( tree )
|
|
{
|
|
proto_tree_add_uint_format(tree, hf_portmap_proc, tvb,
|
|
offset+8, 4, proc, "Procedure: %s (%u)",
|
|
rpc_proc_name(prog, vers, proc), proc);
|
|
}
|
|
|
|
offset += 12;
|
|
|
|
/* Dissect the arguments for this procedure.
|
|
Make the columns non-writable, so the dissector won't change
|
|
them out from under us. */
|
|
col_set_writable(pinfo->fd, FALSE);
|
|
offset = dissect_rpc_indir_call(tvb, pinfo, tree, offset,
|
|
hf_portmap_args, prog, vers, proc);
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* Dissect a callit reply */
|
|
int dissect_callit_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
if ( tree )
|
|
{
|
|
proto_tree_add_item(tree, hf_portmap_port, tvb,
|
|
offset, 4, FALSE);
|
|
}
|
|
offset += 4;
|
|
|
|
/* Dissect the result of this procedure.
|
|
Make the columns non-writable, so the dissector won't change
|
|
them out from under us. */
|
|
col_set_writable(pinfo->fd, FALSE);
|
|
offset = dissect_rpc_indir_reply(tvb, pinfo, tree, offset,
|
|
hf_portmap_result, hf_portmap_prog, hf_portmap_version,
|
|
hf_portmap_proc);
|
|
|
|
return offset;
|
|
}
|
|
|
|
/* proc number, "proc name", dissect_request, dissect_reply */
|
|
/* NULL as function pointer means: type of arguments is "void". */
|
|
static const vsff portmap1_proc[] = {
|
|
{ PORTMAPPROC_NULL, "NULL", NULL, NULL },
|
|
{ PORTMAPPROC_SET, "SET", NULL, NULL },
|
|
{ PORTMAPPROC_UNSET, "UNSET", NULL, NULL },
|
|
{ PORTMAPPROC_GETPORT, "GETPORT", NULL, NULL },
|
|
{ PORTMAPPROC_DUMP, "DUMP", NULL, NULL },
|
|
{ PORTMAPPROC_CALLIT, "CALLIT", NULL, NULL },
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
/* end of Portmap version 1 */
|
|
|
|
static const vsff portmap2_proc[] = {
|
|
{ PORTMAPPROC_NULL, "NULL",
|
|
NULL, NULL },
|
|
{ PORTMAPPROC_SET, "SET",
|
|
dissect_set_call, dissect_set_reply },
|
|
{ PORTMAPPROC_UNSET, "UNSET",
|
|
dissect_unset_call, dissect_set_reply },
|
|
{ PORTMAPPROC_GETPORT, "GETPORT",
|
|
dissect_getport_call, dissect_getport_reply },
|
|
{ PORTMAPPROC_DUMP, "DUMP",
|
|
NULL, dissect_dump_reply },
|
|
{ PORTMAPPROC_CALLIT, "CALLIT",
|
|
dissect_callit_call, dissect_callit_reply },
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
/* end of Portmap version 2 */
|
|
|
|
|
|
/* RFC 1833, Page 3 */
|
|
static int
|
|
dissect_rpcb(tvbuff_t *tvb, int offset, packet_info *pinfo, proto_tree *tree)
|
|
{
|
|
proto_item* rpcb_item = NULL;
|
|
proto_tree* rpcb_tree = NULL;
|
|
int old_offset = offset;
|
|
guint32 prog;
|
|
|
|
if (tree) {
|
|
rpcb_item = proto_tree_add_item(tree, hf_portmap_rpcb, tvb,
|
|
offset, tvb_length(tvb), FALSE);
|
|
if (rpcb_item)
|
|
rpcb_tree = proto_item_add_subtree(rpcb_item, ett_portmap_rpcb);
|
|
}
|
|
|
|
prog = tvb_get_ntohl(tvb, offset);
|
|
if (rpcb_tree)
|
|
proto_tree_add_uint_format(rpcb_tree, hf_portmap_rpcb_prog, tvb,
|
|
offset, 4, prog,
|
|
"Program: %s (%u)", rpc_prog_name(prog), prog);
|
|
offset += 4;
|
|
|
|
offset = dissect_rpc_uint32_tvb(tvb, pinfo, rpcb_tree,
|
|
hf_portmap_rpcb_version, offset);
|
|
offset = dissect_rpc_string_tvb(tvb, pinfo, rpcb_tree,
|
|
hf_portmap_rpcb_netid, offset, NULL);
|
|
offset = dissect_rpc_string_tvb(tvb, pinfo, rpcb_tree,
|
|
hf_portmap_rpcb_addr, offset, NULL);
|
|
offset = dissect_rpc_string_tvb(tvb, pinfo, rpcb_tree,
|
|
hf_portmap_rpcb_owner, offset, NULL);
|
|
|
|
/* now we know, that rpcb is shorter */
|
|
if (rpcb_item) {
|
|
proto_item_set_len(rpcb_item, offset - old_offset);
|
|
}
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
|
|
/* RFC 1833, Page 7 */
|
|
int dissect_rpcb3_getaddr_call(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpcb(tvb, offset, pinfo, tree);
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
/* RFC 1833, Page 7 */
|
|
int dissect_rpcb3_getaddr_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpc_string_tvb(tvb, pinfo, tree,
|
|
hf_portmap_uaddr, offset, NULL);
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
/* RFC 1833, Page 7 */
|
|
int dissect_rpcb3_dump_reply(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
offset = dissect_rpc_list_tvb(tvb, pinfo, tree, offset, dissect_rpcb);
|
|
return offset;
|
|
}
|
|
|
|
/* RFC 1833, page 4 */
|
|
int dissect_rpcb_rmtcallres(tvbuff_t *tvb, int offset, packet_info *pinfo,
|
|
proto_tree *tree)
|
|
{
|
|
/* Dissect the remote universal address. */
|
|
offset = dissect_rpc_string_tvb(tvb, pinfo, tree,
|
|
hf_portmap_rpcb_addr, offset, NULL);
|
|
|
|
/* Dissect the result of this procedure.
|
|
Make the columns non-writable, so the dissector won't change
|
|
them out from under us. */
|
|
col_set_writable(pinfo->fd, FALSE);
|
|
offset = dissect_rpc_indir_reply(tvb, pinfo, tree, offset,
|
|
hf_portmap_result, hf_portmap_prog, hf_portmap_version,
|
|
hf_portmap_proc);
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
/* Portmapper version 3, RFC 1833, Page 7 */
|
|
static const vsff portmap3_proc[] = {
|
|
{ RPCBPROC_NULL, "NULL",
|
|
NULL, NULL },
|
|
{ RPCBPROC_SET, "SET",
|
|
NULL, NULL },
|
|
{ RPCBPROC_UNSET, "UNSET",
|
|
NULL, NULL },
|
|
{ RPCBPROC_GETADDR, "GETADDR",
|
|
dissect_rpcb3_getaddr_call, dissect_rpcb3_getaddr_reply},
|
|
{ RPCBPROC_DUMP, "DUMP",
|
|
NULL, dissect_rpcb3_dump_reply },
|
|
{ RPCBPROC_CALLIT, "CALLIT",
|
|
dissect_callit_call, dissect_rpcb_rmtcallres },
|
|
{ RPCBPROC_GETTIME, "GETTIME",
|
|
NULL, NULL },
|
|
{ RPCBPROC_UADDR2TADDR, "UADDR2TADDR",
|
|
NULL, NULL },
|
|
{ RPCBPROC_TADDR2UADDR, "TADDR2UADDR",
|
|
NULL, NULL },
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
/* end of Portmap version 3 */
|
|
|
|
|
|
/* Portmapper version 4, RFC 1833, Page 8 */
|
|
static const vsff portmap4_proc[] = {
|
|
{ RPCBPROC_NULL, "NULL",
|
|
NULL, NULL },
|
|
{ RPCBPROC_SET, "SET",
|
|
NULL, NULL },
|
|
{ RPCBPROC_UNSET, "UNSET",
|
|
NULL, NULL },
|
|
{ RPCBPROC_GETADDR, "GETADDR",
|
|
dissect_rpcb3_getaddr_call, dissect_rpcb3_getaddr_reply},
|
|
{ RPCBPROC_DUMP, "DUMP",
|
|
NULL, dissect_rpcb3_dump_reply },
|
|
{ RPCBPROC_BCAST, "BCAST",
|
|
dissect_callit_call, dissect_rpcb_rmtcallres },
|
|
{ RPCBPROC_GETTIME, "GETTIME",
|
|
NULL, NULL },
|
|
{ RPCBPROC_UADDR2TADDR, "UADDR2TADDR",
|
|
NULL, NULL },
|
|
{ RPCBPROC_TADDR2UADDR, "TADDR2UADDR",
|
|
NULL, NULL },
|
|
{ RPCBPROC_GETVERSADDR, "GETVERSADDR",
|
|
NULL, NULL },
|
|
{ RPCBPROC_INDIRECT, "INDIRECT",
|
|
dissect_callit_call, dissect_rpcb_rmtcallres },
|
|
{ RPCBPROC_GETADDRLIST, "GETADDRLIST",
|
|
NULL, NULL },
|
|
{ RPCBPROC_GETSTAT, "GETSTAT",
|
|
NULL, NULL },
|
|
{ 0, NULL, NULL, NULL }
|
|
};
|
|
/* end of Portmap version 4 */
|
|
|
|
void
|
|
proto_register_portmap(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_portmap_prog, {
|
|
"Program", "portmap.prog", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Program" }},
|
|
{ &hf_portmap_port, {
|
|
"Port", "portmap.port", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Port" }},
|
|
{ &hf_portmap_proc, {
|
|
"Procedure", "portmap.proc", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Procedure" }},
|
|
{ &hf_portmap_proto, {
|
|
"Protocol", "portmap.proto", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Protocol" }},
|
|
{ &hf_portmap_version, {
|
|
"Version", "portmap.version", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Version" }},
|
|
{ &hf_portmap_answer, {
|
|
"Answer", "portmap.answer", FT_BOOLEAN, BASE_DEC,
|
|
NULL, 0, "Answer" }},
|
|
{ &hf_portmap_args, {
|
|
"Arguments", "portmap.args", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "Arguments" }},
|
|
{ &hf_portmap_result, {
|
|
"Result", "portmap.result", FT_BYTES, BASE_HEX,
|
|
NULL, 0, "Result" }},
|
|
{ &hf_portmap_rpcb, {
|
|
"RPCB", "portmap.rpcb", FT_NONE, 0,
|
|
NULL, 0, "RPCB" }},
|
|
{ &hf_portmap_rpcb_prog, {
|
|
"Program", "portmap.rpcb.prog", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Program" }},
|
|
{ &hf_portmap_rpcb_version, {
|
|
"Version", "portmap.rpcb.version", FT_UINT32, BASE_DEC,
|
|
NULL, 0, "Version" }},
|
|
{ &hf_portmap_rpcb_netid, {
|
|
"Network Id", "portmap.rpcb.netid", FT_STRING, BASE_DEC,
|
|
NULL, 0, "Network Id" }},
|
|
{ &hf_portmap_rpcb_addr, { /* address in rpcb structure in request */
|
|
"Universal Address", "portmap.rpcb.addr", FT_STRING, BASE_DEC,
|
|
NULL, 0, "Universal Address" }},
|
|
{ &hf_portmap_rpcb_owner, {
|
|
"Owner of this Service", "portmap.rpcb.owner", FT_STRING, BASE_DEC,
|
|
NULL, 0, "Owner of this Service" }},
|
|
{ &hf_portmap_uaddr, { /* address in RPCBPROC_GETADDR reply */
|
|
"Universal Address", "portmap.uaddr", FT_STRING, BASE_DEC,
|
|
NULL, 0, "Universal Address" }},
|
|
};
|
|
static gint *ett[] = {
|
|
&ett_portmap,
|
|
&ett_portmap_rpcb,
|
|
&ett_portmap_entry
|
|
};
|
|
|
|
proto_portmap = proto_register_protocol("Portmap", "Portmap", "portmap");
|
|
proto_register_field_array(proto_portmap, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_portmap(void)
|
|
{
|
|
/* Register the protocol as RPC */
|
|
rpc_init_prog(proto_portmap, PORTMAP_PROGRAM, ett_portmap);
|
|
/* Register the procedure tables */
|
|
rpc_init_proc_table(PORTMAP_PROGRAM, 1, portmap1_proc);
|
|
rpc_init_proc_table(PORTMAP_PROGRAM, 2, portmap2_proc);
|
|
rpc_init_proc_table(PORTMAP_PROGRAM, 3, portmap3_proc);
|
|
rpc_init_proc_table(PORTMAP_PROGRAM, 4, portmap4_proc);
|
|
}
|