forked from osmocom/wireshark
575 lines
20 KiB
C
Executable File
575 lines
20 KiB
C
Executable File
/* packet-fc-sp.c
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* Routines for Fibre Channel Security Protocol (FC-SP)
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* This decoder is for FC-SP version 1.1
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* Copyright 2003, Dinesh G Dutt <ddutt@cisco.com>
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*
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* $Id: packet-fcsp.c,v 1.2 2003/11/07 08:47:53 guy 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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* Copied from WHATEVER_FILE_YOU_USED (where "WHATEVER_FILE_YOU_USED"
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* is a dissector file; if you just copied this from README.developer,
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* don't bother with the "Copied from" - you don't even need to put
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* in a "Copied from" if you copied an existing dissector, especially
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* if the bulk of the code in the new dissector is your code)
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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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#include <stdio.h>
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#include <stdlib.h>
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#include <string.h>
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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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#ifdef HAVE_NETINET_IN_H
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# include <netinet/in.h>
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#endif
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#include <glib.h>
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#ifdef NEED_SNPRINTF_H
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# include "snprintf.h"
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#endif
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#include "prefs.h"
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#include <epan/packet.h>
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#include <epan/conversation.h>
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#include "etypes.h"
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#include "packet-fc.h"
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#include "packet-fcsp.h"
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/* Initialize the protocol and registered fields */
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static int proto_fcsp = -1;
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static int hf_auth_proto_ver = -1;
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static int hf_auth_msg_code = -1;
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static int hf_auth_flags = -1;
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static int hf_auth_len = -1;
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static int hf_auth_tid = -1;
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static int hf_auth_initiator_wwn = -1;
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static int hf_auth_initiator_name = -1;
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static int hf_auth_usable_proto = -1;
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static int hf_auth_rjt_code = -1;
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static int hf_auth_rjt_codedet = -1;
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static int hf_auth_responder_wwn = -1;
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static int hf_auth_responder_name = -1;
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static int hf_auth_dhchap_groupid = -1;
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static int hf_auth_dhchap_hashid = -1;
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static int hf_auth_dhchap_chal_len = -1;
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static int hf_auth_dhchap_val_len = -1;
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static int hf_auth_dhchap_rsp_len = -1;
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static int hf_auth_initiator_name_type = -1;
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static int hf_auth_initiator_name_len = -1;
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static int hf_auth_responder_name_len = -1;
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static int hf_auth_responder_name_type = -1;
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static int hf_auth_proto_type = -1;
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static int hf_auth_proto_param_len = -1;
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static int hf_auth_dhchap_param_tag = -1;
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static int hf_auth_dhchap_param_len = -1;
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static int hf_auth_dhchap_hash_type = -1;
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static int hf_auth_dhchap_group_type = -1;
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static int hf_auth_dhchap_dhvalue = -1;
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static int hf_auth_dhchap_chal_value = -1;
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static int hf_auth_dhchap_rsp_value = -1;
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/* Initialize the subtree pointers */
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static gint ett_fcsp = -1;
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static dissector_handle_t data_handle;
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static const value_string fcauth_msgcode_vals[] = {
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{FC_AUTH_MSG_AUTH_REJECT, "AUTH_Reject"},
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{FC_AUTH_MSG_AUTH_NEGOTIATE, "AUTH_Negotiate"},
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{FC_AUTH_MSG_AUTH_DONE, "AUTH_Done"},
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{FC_AUTH_DHCHAP_CHALLENGE, "DHCHAP_Challenge"},
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{FC_AUTH_DHCHAP_REPLY, "DHCHAP_Reply"},
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{FC_AUTH_DHCHAP_SUCCESS, "DHCHAP_Success"},
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{FC_AUTH_FCAP_REQUEST, "FCAP_Request"},
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{FC_AUTH_FCAP_ACKNOWLEDGE, "FCAP_Acknowledge"},
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{FC_AUTH_FCAP_CONFIRM, "FCAP_Confirm"},
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{FC_AUTH_FCPAP_INIT, "FCPAP_Init"},
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{FC_AUTH_FCPAP_ACCEPT, "FCPAP_Accept"},
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{FC_AUTH_FCPAP_COMPLETE, "FCPAP_Complete"},
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{0, NULL},
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};
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static const value_string fcauth_rjtcode_vals[] = {
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{0x01, "Authentication Failure"},
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{0x02, "Logical Error"},
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{0, NULL},
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};
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static const value_string fcauth_rjtcode_detail_vals[] = {
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{0x01, "Authentication Mechanism Not Usable"},
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{0x02, "DH Group Not Usable"},
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{0x03, "Hash Algorithm Not Usable"},
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{0x04, "Authentication Protocol Instance Already Started"},
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{0x05, "Authentication Failed "},
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{0x06, "Incorrect Payload "},
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{0x07, "Incorrect Authentication Protocol Message"},
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{0x08, "Protocol Reset"},
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{0, NULL},
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};
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static const value_string fcauth_dhchap_param_vals[] = {
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{FC_AUTH_DHCHAP_PARAM_HASHLIST, "HashList"},
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{FC_AUTH_DHCHAP_PARAM_DHgIDLIST, "DHgIDList"},
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{0, NULL},
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};
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static const value_string fcauth_dhchap_hash_algo_vals[] = {
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{FC_AUTH_DHCHAP_HASH_MD5, "MD5"},
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{FC_AUTH_DHCHAP_HASH_SHA1, "SHA-1"},
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{0, NULL},
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};
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static const value_string fcauth_name_type_vals[] = {
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{FC_AUTH_NAME_TYPE_WWN, "WWN"},
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{0, NULL},
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};
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static const value_string fcauth_proto_type_vals[] = {
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{FC_AUTH_PROTO_TYPE_DHCHAP, "DHCHAP"},
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{FC_AUTH_PROTO_TYPE_FCAP, "FCAP"},
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{0, NULL},
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};
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static const value_string fcauth_dhchap_dhgid_vals[] = {
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{0, "DH NULL"},
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{1, "DH Group 1024"},
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{2, "DH Group 1280"},
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{3, "DH Group 1536"},
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{4, "DH Group 2048"},
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{0, NULL},
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};
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/* this format is required because a script is used to build the C function
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that calls all the protocol registration.
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*/
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void dissect_fcsp_dhchap_auth_param (tvbuff_t *tvb, proto_tree *tree,
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int offset, gint32 total_len)
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{
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guint16 auth_param_tag;
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guint16 param_len = 0, i;
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if (tree) {
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auth_param_tag = tvb_get_ntohs (tvb, offset);
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total_len -= 4;
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while (total_len > 0) {
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proto_tree_add_item (tree, hf_auth_dhchap_param_tag, tvb, offset,
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2, 0);
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proto_tree_add_item (tree, hf_auth_dhchap_param_len, tvb, offset+2,
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2, 0);
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auth_param_tag = tvb_get_ntohs (tvb, offset);
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param_len = tvb_get_ntohs (tvb, offset+2)*4;
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switch (auth_param_tag) {
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case FC_AUTH_DHCHAP_PARAM_HASHLIST:
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offset += 4;
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total_len -= 4;
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for (i = 0; i < param_len; i += 4) {
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proto_tree_add_item (tree, hf_auth_dhchap_hash_type, tvb,
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offset, 4, 0);
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offset += 4;
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}
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break;
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case FC_AUTH_DHCHAP_PARAM_DHgIDLIST:
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offset += 4;
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total_len -= 4;
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for (i = 0; i < param_len; i += 4) {
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proto_tree_add_item (tree, hf_auth_dhchap_group_type, tvb,
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offset, 4, 0);
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offset += 4;
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}
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break;
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default:
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break;
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}
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total_len -= param_len;
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}
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}
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}
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void dissect_fcsp_dhchap_challenge (tvbuff_t *tvb, proto_tree *tree)
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{
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int offset = 12;
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guint16 name_type;
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guint16 param_len, name_len;
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if (tree) {
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proto_tree_add_item (tree, hf_auth_responder_name_type, tvb, offset,
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2, 0);
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name_type = tvb_get_ntohs (tvb, offset);
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proto_tree_add_item (tree, hf_auth_responder_name_len, tvb, offset+2,
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2, 0);
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name_len = tvb_get_ntohs (tvb, offset+2);
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if (name_type == FC_AUTH_NAME_TYPE_WWN) {
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proto_tree_add_string (tree, hf_auth_responder_wwn, tvb, offset+4,
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8,
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fcwwn_to_str (tvb_get_ptr (tvb, offset+4,
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8)));
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}
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else {
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proto_tree_add_bytes (tree, hf_auth_responder_name, tvb, offset+4,
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name_len, tvb_get_ptr (tvb, offset+4, name_len));
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}
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offset += (4+name_len);
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proto_tree_add_item (tree, hf_auth_dhchap_hash_type, tvb, offset,
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4, 0);
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proto_tree_add_item (tree, hf_auth_dhchap_group_type, tvb, offset+4,
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4, 0);
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proto_tree_add_item (tree, hf_auth_dhchap_chal_len, tvb, offset+8,
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4, 0);
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param_len = tvb_get_ntohl (tvb, offset+8);
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proto_tree_add_bytes (tree, hf_auth_dhchap_chal_value, tvb, offset+12,
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param_len,
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tvb_get_ptr (tvb, offset+12, param_len));
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offset += (param_len + 12);
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proto_tree_add_item (tree, hf_auth_dhchap_val_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_bytes (tree, hf_auth_dhchap_dhvalue, tvb, offset+4,
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param_len,
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tvb_get_ptr (tvb, offset+4, param_len));
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}
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}
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void dissect_fcsp_dhchap_reply (tvbuff_t *tvb, proto_tree *tree)
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{
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int offset = 12;
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guint32 param_len;
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if (tree) {
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proto_tree_add_item (tree, hf_auth_dhchap_rsp_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_bytes (tree, hf_auth_dhchap_rsp_value, tvb, offset+4,
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param_len,
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tvb_get_ptr (tvb, offset+4, param_len));
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offset += (param_len + 4);
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proto_tree_add_item (tree, hf_auth_dhchap_val_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_bytes (tree, hf_auth_dhchap_dhvalue, tvb, offset+4,
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param_len,
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tvb_get_ptr (tvb, offset+4, param_len));
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offset += (param_len + 4);
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proto_tree_add_item (tree, hf_auth_dhchap_chal_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_bytes (tree, hf_auth_dhchap_chal_value, tvb, offset+4,
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param_len,
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tvb_get_ptr (tvb, offset+4, param_len));
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}
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}
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void dissect_fcsp_dhchap_success (tvbuff_t *tvb, proto_tree *tree)
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{
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int offset = 12;
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guint32 param_len;
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if (tree) {
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proto_tree_add_item (tree, hf_auth_dhchap_rsp_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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proto_tree_add_bytes (tree, hf_auth_dhchap_rsp_value, tvb, offset+4,
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param_len,
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tvb_get_ptr (tvb, offset+4, param_len));
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}
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}
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void dissect_fcsp_auth_negotiate (tvbuff_t *tvb, proto_tree *tree)
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{
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int offset = 12;
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guint16 name_type, name_len, proto_type, param_len;
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guint32 num_protos, i;
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if (tree) {
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proto_tree_add_item (tree, hf_auth_initiator_name_type, tvb, offset,
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2, 0);
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name_type = tvb_get_ntohs (tvb, offset);
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proto_tree_add_item (tree, hf_auth_initiator_name_len, tvb, offset+2,
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2, 0);
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name_len = tvb_get_ntohs (tvb, offset+2);
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if (name_type == FC_AUTH_NAME_TYPE_WWN) {
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proto_tree_add_string (tree, hf_auth_initiator_wwn, tvb, offset+4, 8,
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fcwwn_to_str (tvb_get_ptr (tvb, offset+4, 8)));
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}
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else {
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proto_tree_add_bytes (tree, hf_auth_initiator_name, tvb, offset+4,
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name_len, tvb_get_ptr (tvb, offset+4,
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name_len));
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}
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offset += (4+name_len);
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proto_tree_add_item (tree, hf_auth_usable_proto, tvb, offset, 4, 0);
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num_protos = tvb_get_ntohl (tvb, offset);
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offset += 4;
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for (i = 0; i < num_protos; i++) {
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proto_tree_add_item (tree, hf_auth_proto_param_len, tvb, offset, 4, 0);
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param_len = tvb_get_ntohl (tvb, offset);
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offset += 4;
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if (tvb_bytes_exist (tvb, offset, param_len)) {
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proto_type = tvb_get_ntohl (tvb, offset);
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proto_tree_add_item (tree, hf_auth_proto_type, tvb, offset, 4, 0);
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switch (proto_type) {
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case FC_AUTH_PROTO_TYPE_DHCHAP:
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dissect_fcsp_dhchap_auth_param (tvb, tree, offset+4, param_len);
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break;
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case FC_AUTH_PROTO_TYPE_FCAP:
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break;
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default:
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break;
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}
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}
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offset += param_len;
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}
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}
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}
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void dissect_fcsp_auth_done (tvbuff_t *tvb _U_, proto_tree *tree _U_)
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{
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}
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void dissect_fcsp_auth_rjt (tvbuff_t *tvb, proto_tree *tree)
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{
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int offset = 12;
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if (tree) {
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proto_tree_add_item (tree, hf_auth_rjt_code, tvb, offset, 1, 0);
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proto_tree_add_item (tree, hf_auth_rjt_codedet, tvb, offset+1, 1, 0);
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}
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}
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void dissect_fcsp (tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree)
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{
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proto_item *ti = NULL;
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guint8 opcode;
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int offset = 0;
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proto_tree *fcsp_tree = NULL;
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/* Make entry in the Info column on summary display */
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opcode = tvb_get_guint8 (tvb, 2);
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if (check_col (pinfo->cinfo, COL_INFO)) {
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col_set_str (pinfo->cinfo, COL_INFO,
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val_to_str (opcode, fcauth_msgcode_vals, "0x%x"));
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}
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if (tree) {
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ti = proto_tree_add_protocol_format (tree, proto_fcsp, tvb, 0,
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tvb_length (tvb), "FC-SP");
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fcsp_tree = proto_item_add_subtree (ti, ett_fcsp);
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proto_tree_add_item (fcsp_tree, hf_auth_flags, tvb, offset+1, 1, 0);
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proto_tree_add_item (fcsp_tree, hf_auth_msg_code, tvb, offset+2, 1, 0);
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proto_tree_add_item (fcsp_tree, hf_auth_proto_ver, tvb, offset+3, 1,
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0);
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proto_tree_add_item (fcsp_tree, hf_auth_len, tvb, offset+4, 4, 0);
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proto_tree_add_item (fcsp_tree, hf_auth_tid, tvb, offset+8, 4, 0);
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switch (opcode) {
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case FC_AUTH_MSG_AUTH_REJECT:
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dissect_fcsp_auth_rjt (tvb, tree);
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break;
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case FC_AUTH_MSG_AUTH_NEGOTIATE:
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dissect_fcsp_auth_negotiate (tvb, tree);
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break;
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case FC_AUTH_MSG_AUTH_DONE:
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dissect_fcsp_auth_done (tvb, tree);
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break;
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case FC_AUTH_DHCHAP_CHALLENGE:
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dissect_fcsp_dhchap_challenge (tvb, tree);
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break;
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case FC_AUTH_DHCHAP_REPLY:
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dissect_fcsp_dhchap_reply (tvb, tree);
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break;
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case FC_AUTH_DHCHAP_SUCCESS:
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dissect_fcsp_dhchap_success (tvb, tree);
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break;
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case FC_AUTH_FCAP_REQUEST:
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case FC_AUTH_FCAP_ACKNOWLEDGE:
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case FC_AUTH_FCAP_CONFIRM:
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case FC_AUTH_FCPAP_INIT:
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case FC_AUTH_FCPAP_ACCEPT:
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case FC_AUTH_FCPAP_COMPLETE:
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proto_tree_add_text (fcsp_tree, tvb, offset+12, tvb_length (tvb),
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"FCAP Decoding Not Supported");
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break;
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default:
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break;
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}
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}
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}
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void
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proto_register_fcsp (void)
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{
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/* Setup list of header fields See Section 1.6.1 for details*/
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static hf_register_info hf[] = {
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{ &hf_auth_proto_ver,
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{"Protocol Version", "fcsp.version", FT_UINT8, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_msg_code,
|
|
{"Message Code", "fcsp.opcode", FT_UINT8, BASE_HEX,
|
|
VALS (fcauth_msgcode_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_flags,
|
|
{"Flags", "fcsp.flags", FT_UINT8, BASE_HEX, NULL, 0x0, "",
|
|
HFILL}},
|
|
{ &hf_auth_len,
|
|
{"Packet Length", "fcsp.len", FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"", HFILL}},
|
|
{ &hf_auth_tid,
|
|
{"Transaction Identifier", "fcsp.tid", FT_UINT32, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_initiator_wwn,
|
|
{"Initiator Name (WWN)", "fcsp.initwwn", FT_STRING, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_initiator_name,
|
|
{"Initiator Name (Unknown Type)", "fcsp.initname", FT_BYTES,
|
|
BASE_HEX, NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_initiator_name_type,
|
|
{"Initiator Name Type", "fcsp.initnametype", FT_UINT16, BASE_HEX,
|
|
VALS (fcauth_name_type_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_initiator_name_len,
|
|
{"Initiator Name Length", "fcsp.initnamelen", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_usable_proto,
|
|
{"Number of Usable Protocols", "fcsp.usableproto", FT_UINT32,
|
|
BASE_DEC, NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_rjt_code,
|
|
{"Reason Code", "fcsp.rjtcode", FT_UINT8, BASE_DEC,
|
|
VALS (fcauth_rjtcode_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_rjt_codedet,
|
|
{"Reason Code Explanation", "fcsp.rjtcodet", FT_UINT8, BASE_DEC,
|
|
VALS (fcauth_rjtcode_detail_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_responder_wwn,
|
|
{"Responder Name (WWN)", "fcsp.rspwwn", FT_STRING, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_responder_name,
|
|
{"Responder Name (Unknown Type)", "fcsp.rspname", FT_BYTES, BASE_HEX,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_responder_name_type,
|
|
{"Responder Name Type", "fcsp.rspnametype", FT_UINT16, BASE_HEX,
|
|
VALS (fcauth_name_type_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_responder_name_len,
|
|
{"Responder Name Type", "fcsp.rspnamelen", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_hashid,
|
|
{"Hash Identifier", "fcsp.dhchap.hashid", FT_UINT32, BASE_HEX, NULL, 0x0,
|
|
"", HFILL}},
|
|
{ &hf_auth_dhchap_groupid,
|
|
{"DH Group Identifier", "fcsp.dhchap.groupid", FT_UINT32, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_chal_len,
|
|
{"Challenge Value Length", "fcsp.dhchap.challen", FT_UINT32, BASE_DEC,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_val_len,
|
|
{"DH Value Length", "fcsp.dhchap.vallen", FT_UINT32, BASE_DEC, NULL,
|
|
0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_rsp_len,
|
|
{"Response Value Length", "fcsp.dhchap.rsplen", FT_UINT32, BASE_DEC,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_proto_type,
|
|
{"Authentication Protocol Type", "fcsp.proto", FT_UINT32, BASE_DEC,
|
|
VALS (fcauth_proto_type_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_proto_param_len,
|
|
{"Protocol Parameters Length", "fcsp.protoparamlen", FT_UINT32,
|
|
BASE_DEC, NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_param_tag,
|
|
{"Parameter Tag", "fcsp.dhchap.paramtype", FT_UINT16, BASE_HEX,
|
|
VALS (fcauth_dhchap_param_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_param_len,
|
|
{"Parameter Length", "fcsp.dhchap.paramlen", FT_UINT16, BASE_DEC,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_hash_type,
|
|
{"Hash Algorithm", "fcsp.dhchap.hashtype", FT_UINT32, BASE_DEC,
|
|
VALS (fcauth_dhchap_hash_algo_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_group_type,
|
|
{"DH Group", "fcsp.dhchap.dhgid", FT_UINT32, BASE_DEC,
|
|
VALS (fcauth_dhchap_dhgid_vals), 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_chal_value,
|
|
{"Challenge Value", "fcsp.dhchap.chalval", FT_BYTES, BASE_HEX,
|
|
NULL, 0x0, "", HFILL}},
|
|
{ &hf_auth_dhchap_dhvalue,
|
|
{"DH Value", "fcsp.dhchap.dhvalue", FT_BYTES, BASE_HEX, NULL, 0x0,
|
|
"", HFILL}},
|
|
{ &hf_auth_dhchap_rsp_value,
|
|
{"Response Value", "fcsp.dhchap.rspval", FT_BYTES, BASE_HEX, NULL,
|
|
0x0, "", HFILL}},
|
|
|
|
};
|
|
|
|
|
|
/* Setup protocol subtree array */
|
|
static gint *ett[] = {
|
|
&ett_fcsp,
|
|
};
|
|
|
|
/* Register the protocol name and description */
|
|
proto_fcsp = proto_register_protocol ("Fibre Channel Security Protocol",
|
|
"FC-SP", "fcsp");
|
|
|
|
register_dissector("fcsp", dissect_fcsp, proto_fcsp);
|
|
/* Required function calls to register the header fields and subtrees used */
|
|
proto_register_field_array(proto_fcsp, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
data_handle = find_dissector("data");
|
|
}
|
|
|
|
/* If this dissector uses sub-dissector registration add a registration routine.
|
|
This format is required because a script is used to find these routines and
|
|
create the code that calls these routines.
|
|
*/
|
|
void
|
|
proto_reg_handoff_fcsp (void)
|
|
{
|
|
dissector_handle_t fcsp_handle;
|
|
|
|
fcsp_handle = create_dissector_handle (dissect_fcsp, proto_fcsp);
|
|
|
|
data_handle = find_dissector ("data");
|
|
}
|
|
|