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wireshark/packet-dcerpc-krb5rpc.c
Tim Potter 623f5b865d Dynamically create DCERPC opnum value_strings from the subdissector 
list rather than duplicating this information in the dissector.  Some
of the opnum strings were starting to get out of date as developers
forgot to update the information in both places.

svn path=/trunk/; revision=7936
2003-06-26 04:30:31 +00:00

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/* packet-dcerpc-krb5rpc.c
*
* Routines for dcerpc DCE/KRB5 interface
* Copyright 2002, Jaime Fournier <jafour1@yahoo.com>
* This information is based off the released idl files from opengroup.
* ftp://ftp.opengroup.org/pub/dce122/dce/src/security.tar.gz security/idl/krb5rpc.idl
*
* $Id: packet-dcerpc-krb5rpc.c,v 1.5 2003/06/26 04:30:27 tpot 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 <glib.h>
#include <epan/packet.h>
#include "packet-dcerpc.h"
#include "packet-kerberos.h"
#include "packet-dcerpc-dce122.h"
static int proto_krb5rpc = -1;
static gint ett_krb5rpc = -1;
static e_uuid_t uuid_krb5rpc =
{ 0x8f73de50, 0x768c, 0x11ca, {0xbf, 0xfc, 0x08, 0x00, 0x1e, 0x03, 0x94,
0x31}
};
static guint16 ver_krb5rpc = 1;
static int hf_krb5rpc_opnum = -1;
static int hf_krb5rpc_sendto_kdc_rqst_keysize = -1;
static int hf_krb5rpc_sendto_kdc_rqst_spare1 = -1;
static int hf_krb5rpc_sendto_kdc_resp_len = -1;
static int hf_krb5rpc_sendto_kdc_resp_max = -1;
static int hf_krb5rpc_sendto_kdc_resp_spare1 = -1;
static int hf_krb5rpc_sendto_kdc_resp_keysize = -1;
static int hf_krb5rpc_sendto_kdc_resp_st = -1;
static int hf_krb5rpc_krb5 = -1;
static gint ett_krb5rpc_krb5 = -1;
static int
krb5rpc_dissect_sendto_kdc_rqst (tvbuff_t * tvb, int offset,
packet_info * pinfo, proto_tree * tree,
char *drep)
{
guint32 keysize, spare1, remain;
proto_item *item;
tvbuff_t *krb5_tvb;
proto_tree *subtree;
/*
* [in] handle_t h,
* [in] unsigned32 len,
* [in, size_is(len)]
* byte message[],
* [in] unsigned32 out_buf_len,
*/
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_rqst_keysize, &keysize);
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_rqst_spare1, &spare1);
item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, TRUE);
subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5);
remain = tvb_length_remaining(tvb, offset);
krb5_tvb = tvb_new_subset (tvb, offset, remain, remain);
offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, TRUE);
return offset;
}
static int
krb5rpc_dissect_sendto_kdc_resp (tvbuff_t * tvb, int offset,
packet_info * pinfo, proto_tree * tree,
char *drep)
{
guint32 resp_len, maxsize, spare1, keysize, remain;
proto_item *item;
tvbuff_t *krb5_tvb;
proto_tree *subtree;
/*
*
* [out] unsigned32 *resp_len,
* [out, length_is(*resp_len), size_is(out_buf_len)]
* byte out_buf[],
* [out] error_status_t *st unsigned long
*
*/
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_resp_len, &resp_len);
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_resp_max, &maxsize);
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_resp_spare1, &spare1);
offset =
dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
hf_krb5rpc_sendto_kdc_resp_keysize, &keysize);
item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, TRUE);
subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5);
remain = tvb_length_remaining(tvb, offset);
krb5_tvb = tvb_new_subset (tvb, offset, remain, remain);
offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, TRUE);
offset += 16; /* no idea what this is, probably just extended encrypted text. */
return offset;
}
static dcerpc_sub_dissector krb5rpc_dissectors[] = {
{0, "rsec_krb5rpc_sendto_kdc", krb5rpc_dissect_sendto_kdc_rqst,
krb5rpc_dissect_sendto_kdc_resp},
{0, NULL, NULL, NULL},
};
void
proto_register_krb5rpc (void)
{
static hf_register_info hf[] = {
{&hf_krb5rpc_opnum,
{"hf_krb5rpc_opnum", "hf_krb5rpc_opnum", FT_UINT16, BASE_DEC, NULL, 0x0,
"", HFILL }},
{&hf_krb5rpc_sendto_kdc_rqst_keysize,
{"hf_krb5rpc_sendto_kdc_rqst_keysize",
"hf_krb5rpc_sendto_kdc_rqst_keysize", FT_UINT32, BASE_DEC, NULL, 0x0,
"", HFILL}},
{&hf_krb5rpc_sendto_kdc_rqst_spare1,
{"hf_krb5rpc_sendto_kdc_rqst_spare1",
"hf_krb5rpc_sendto_kdc_rqst_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, "",
HFILL}},
{&hf_krb5rpc_sendto_kdc_resp_len,
{"hf_krb5rpc_sendto_kdc_resp_len", "hf_krb5rpc_sendto_kdc_resp_len",
FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
{&hf_krb5rpc_sendto_kdc_resp_max,
{"hf_krb5rpc_sendto_kdc_resp_max", "hf_krb5rpc_sendto_kdc_resp_max",
FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
{&hf_krb5rpc_sendto_kdc_resp_spare1,
{"hf_krb5rpc_sendto_kdc_resp_spare1",
"hf_krb5rpc_sendto_kdc_resp_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, "",
HFILL}},
{&hf_krb5rpc_sendto_kdc_resp_keysize,
{"hf_krb5rpc_sendto_kdc_resp_keysize",
"hf_krb5rpc_sendto_kdc_resp_keysize", FT_UINT32, BASE_DEC, NULL, 0x0,
"", HFILL}},
{&hf_krb5rpc_sendto_kdc_resp_st,
{"hf_krb5rpc_sendto_kdc_resp_st", "hf_krb5rpc_sendto_kdc_resp_st",
FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
{&hf_krb5rpc_krb5,
{"hf_krb5rpc_krb5", "hf_krb5rpc_krb5", FT_BYTES, BASE_HEX, NULL, 0x0,
"krb5_blob", HFILL}},
};
static gint *ett[] = {
&ett_krb5rpc,
&ett_krb5rpc_krb5,
};
proto_krb5rpc =
proto_register_protocol ("DCE/RPC Kerberos V", "KRB5RPC", "krb5rpc");
proto_register_field_array (proto_krb5rpc, hf, array_length (hf));
proto_register_subtree_array (ett, array_length (ett));
}
void
proto_reg_handoff_krb5rpc (void)
{
header_field_info *hf_info;
/* Register the protocol as dcerpc */
dcerpc_init_uuid (proto_krb5rpc, ett_krb5rpc, &uuid_krb5rpc, ver_krb5rpc,
krb5rpc_dissectors, hf_krb5rpc_opnum);
/* Set opnum strings from subdissector list */
hf_info = proto_registrar_get_nth(hf_krb5rpc_opnum);
hf_info->strings = value_string_from_subdissectors(
krb5rpc_dissectors, array_length(krb5rpc_dissectors));
}
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