forked from osmocom/wireshark
![Ronnie Sahlberg](/assets/img/avatar_default.png)
to pass back dissection of application specific fields (octet strings) This can later be used to pick up session keys by dcerpc and similar. Currently it will initially be used by packetcable. PacketCable additions by Thomas Anders svn path=/trunk/; revision=11101
212 lines
6.6 KiB
C
212 lines
6.6 KiB
C
/* packet-dcerpc-krb5rpc.c
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*
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* Routines for dcerpc DCE/KRB5 interface
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* Copyright 2002, Jaime Fournier <Jaime.Fournier@hush.com>
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* This information is based off the released idl files from opengroup.
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* ftp://ftp.opengroup.org/pub/dce122/dce/src/security.tar.gz security/idl/krb5rpc.idl
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*
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* $Id: packet-dcerpc-krb5rpc.c,v 1.9 2004/06/04 01:56:25 sahlberg Exp $
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*
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* Ethereal - Network traffic analyzer
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* By Gerald Combs <gerald@ethereal.com>
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* Copyright 1998 Gerald Combs
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software
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* Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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*/
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#ifdef HAVE_CONFIG_H
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#include "config.h"
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#endif
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#ifdef HAVE_SYS_TYPES_H
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#include <sys/types.h>
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#endif
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#include <string.h>
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#include <glib.h>
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#include <epan/packet.h>
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#include "packet-dcerpc.h"
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#include "packet-kerberos.h"
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#include "packet-dcerpc-dce122.h"
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static int proto_krb5rpc = -1;
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static gint ett_krb5rpc = -1;
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static e_uuid_t uuid_krb5rpc =
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{ 0x8f73de50, 0x768c, 0x11ca, {0xbf, 0xfc, 0x08, 0x00, 0x1e, 0x03, 0x94,
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0x31}
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};
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static guint16 ver_krb5rpc = 1;
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static int hf_krb5rpc_opnum = -1;
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static int hf_krb5rpc_sendto_kdc_rqst_keysize = -1;
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static int hf_krb5rpc_sendto_kdc_rqst_spare1 = -1;
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static int hf_krb5rpc_sendto_kdc_resp_len = -1;
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static int hf_krb5rpc_sendto_kdc_resp_max = -1;
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static int hf_krb5rpc_sendto_kdc_resp_spare1 = -1;
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static int hf_krb5rpc_sendto_kdc_resp_keysize = -1;
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static int hf_krb5rpc_sendto_kdc_resp_st = -1;
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static int hf_krb5rpc_krb5 = -1;
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static gint ett_krb5rpc_krb5 = -1;
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static int
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krb5rpc_dissect_sendto_kdc_rqst (tvbuff_t * tvb, int offset,
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packet_info * pinfo, proto_tree * tree,
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guint8 *drep)
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{
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guint32 keysize, spare1, remain;
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proto_item *item;
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tvbuff_t *krb5_tvb;
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proto_tree *subtree;
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/*
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* [in] handle_t h,
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* [in] unsigned32 len,
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* [in, size_is(len)]
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* byte message[],
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* [in] unsigned32 out_buf_len,
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*/
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_rqst_keysize, &keysize);
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_rqst_spare1, &spare1);
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item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, TRUE);
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subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5);
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remain = tvb_length_remaining(tvb, offset);
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krb5_tvb = tvb_new_subset (tvb, offset, remain, remain);
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offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, TRUE, NULL);
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return offset;
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}
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static int
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krb5rpc_dissect_sendto_kdc_resp (tvbuff_t * tvb, int offset,
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packet_info * pinfo, proto_tree * tree,
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guint8 *drep)
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{
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guint32 resp_len, maxsize, spare1, keysize, remain;
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proto_item *item;
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tvbuff_t *krb5_tvb;
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proto_tree *subtree;
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/*
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*
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* [out] unsigned32 *resp_len,
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* [out, length_is(*resp_len), size_is(out_buf_len)]
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* byte out_buf[],
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* [out] error_status_t *st unsigned long
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*
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*/
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_resp_len, &resp_len);
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_resp_max, &maxsize);
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_resp_spare1, &spare1);
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offset =
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dissect_ndr_uint32 (tvb, offset, pinfo, tree, drep,
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hf_krb5rpc_sendto_kdc_resp_keysize, &keysize);
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item = proto_tree_add_item (tree, hf_krb5rpc_krb5, tvb, offset, -1, TRUE);
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subtree = proto_item_add_subtree (item, ett_krb5rpc_krb5);
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remain = tvb_length_remaining(tvb, offset);
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krb5_tvb = tvb_new_subset (tvb, offset, remain, remain);
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offset = dissect_kerberos_main (krb5_tvb, pinfo, subtree, TRUE, NULL);
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offset += 16; /* no idea what this is, probably just extended encrypted text. */
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return offset;
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}
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static dcerpc_sub_dissector krb5rpc_dissectors[] = {
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{0, "rsec_krb5rpc_sendto_kdc", krb5rpc_dissect_sendto_kdc_rqst,
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krb5rpc_dissect_sendto_kdc_resp},
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{0, NULL, NULL, NULL},
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};
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void
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proto_register_krb5rpc (void)
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{
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static hf_register_info hf[] = {
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{&hf_krb5rpc_opnum,
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{"hf_krb5rpc_opnum", "hf_krb5rpc_opnum", FT_UINT16, BASE_DEC, NULL, 0x0,
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"", HFILL }},
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{&hf_krb5rpc_sendto_kdc_rqst_keysize,
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{"hf_krb5rpc_sendto_kdc_rqst_keysize",
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"hf_krb5rpc_sendto_kdc_rqst_keysize", FT_UINT32, BASE_DEC, NULL, 0x0,
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"", HFILL}},
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{&hf_krb5rpc_sendto_kdc_rqst_spare1,
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{"hf_krb5rpc_sendto_kdc_rqst_spare1",
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"hf_krb5rpc_sendto_kdc_rqst_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, "",
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HFILL}},
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{&hf_krb5rpc_sendto_kdc_resp_len,
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{"hf_krb5rpc_sendto_kdc_resp_len", "hf_krb5rpc_sendto_kdc_resp_len",
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FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
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{&hf_krb5rpc_sendto_kdc_resp_max,
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{"hf_krb5rpc_sendto_kdc_resp_max", "hf_krb5rpc_sendto_kdc_resp_max",
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FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
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{&hf_krb5rpc_sendto_kdc_resp_spare1,
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{"hf_krb5rpc_sendto_kdc_resp_spare1",
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"hf_krb5rpc_sendto_kdc_resp_spare1", FT_UINT32, BASE_DEC, NULL, 0x0, "",
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HFILL}},
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{&hf_krb5rpc_sendto_kdc_resp_keysize,
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{"hf_krb5rpc_sendto_kdc_resp_keysize",
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"hf_krb5rpc_sendto_kdc_resp_keysize", FT_UINT32, BASE_DEC, NULL, 0x0,
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"", HFILL}},
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{&hf_krb5rpc_sendto_kdc_resp_st,
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{"hf_krb5rpc_sendto_kdc_resp_st", "hf_krb5rpc_sendto_kdc_resp_st",
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FT_UINT32, BASE_DEC, NULL, 0x0, "", HFILL}},
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{&hf_krb5rpc_krb5,
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{"hf_krb5rpc_krb5", "hf_krb5rpc_krb5", FT_BYTES, BASE_HEX, NULL, 0x0,
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"krb5_blob", HFILL}},
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};
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static gint *ett[] = {
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&ett_krb5rpc,
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&ett_krb5rpc_krb5,
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};
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proto_krb5rpc =
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proto_register_protocol ("DCE/RPC Kerberos V", "KRB5RPC", "krb5rpc");
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proto_register_field_array (proto_krb5rpc, hf, array_length (hf));
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proto_register_subtree_array (ett, array_length (ett));
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}
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void
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proto_reg_handoff_krb5rpc (void)
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{
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/* Register the protocol as dcerpc */
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dcerpc_init_uuid (proto_krb5rpc, ett_krb5rpc, &uuid_krb5rpc, ver_krb5rpc,
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krb5rpc_dissectors, hf_krb5rpc_opnum);
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}
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