forked from osmocom/wireshark
1941 lines
52 KiB
C
1941 lines
52 KiB
C
/*
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** packet-netflow.c
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**
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*****************************************************************************
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** (c) 2002 bill fumerola <fumerola@yahoo-inc.com>
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** All rights reserved.
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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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**
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** Previous NetFlow dissector written by Matthew Smart <smart@monkey.org>
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** NetFlow v9 support added by same.
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**
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** NetFlow v9 patches by Luca Deri <deri@ntop.org>
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**
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** See
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**
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** http://www.cisco.com/warp/public/cc/pd/iosw/prodlit/tflow_wp.htm
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**
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** for NetFlow v9 information.
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**
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*****************************************************************************
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**
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** this code was written from the following documentation:
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**
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** http://www.cisco.com/univercd/cc/td/doc/product/rtrmgmt/nfc/nfc_3_6/iug/format.pdf
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** http://www.caida.org/tools/measurement/cflowd/configuration/configuration-9.html
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**
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** some documentation is more accurate then others. in some cases, live data and
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** information contained in responses from vendors were also used. some fields
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** are dissected as vendor specific fields.
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**
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** See also
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**
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** http://www.cisco.com/univercd/cc/td/doc/cisintwk/intsolns/netflsol/nfwhite.htm
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**
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** $Yahoo: //depot/fumerola/packet-netflow/packet-netflow.c#14 $
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** $Id$
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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 <glib.h>
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#include <epan/packet.h>
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#include <string.h>
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#include <epan/prefs.h>
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#define UDP_PORT_NETFLOW 2055
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static guint global_netflow_udp_port = UDP_PORT_NETFLOW;
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static guint netflow_udp_port = 0;
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/*
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* pdu identifiers & sizes
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*/
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#define V1PDU_SIZE (4 * 12)
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#define V5PDU_SIZE (4 * 12)
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#define V7PDU_SIZE (4 * 13)
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#define V8PDU_AS_SIZE (4 * 7)
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#define V8PDU_PROTO_SIZE (4 * 7)
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#define V8PDU_SPREFIX_SIZE (4 * 8)
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#define V8PDU_DPREFIX_SIZE (4 * 8)
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#define V8PDU_MATRIX_SIZE (4 * 10)
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#define V8PDU_DESTONLY_SIZE (4 * 8)
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#define V8PDU_SRCDEST_SIZE (4 * 10)
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#define V8PDU_FULL_SIZE (4 * 11)
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#define V8PDU_TOSAS_SIZE (V8PDU_AS_SIZE + 4)
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#define V8PDU_TOSPROTOPORT_SIZE (V8PDU_PROTO_SIZE + 4)
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#define V8PDU_TOSSRCPREFIX_SIZE V8PDU_SPREFIX_SIZE
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#define V8PDU_TOSDSTPREFIX_SIZE V8PDU_DPREFIX_SIZE
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#define V8PDU_TOSMATRIX_SIZE V8PDU_MATRIX_SIZE
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#define V8PDU_PREPORTPROTOCOL_SIZE (4 * 10)
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static const value_string v5_sampling_mode[] = {
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{0, "No sampling mode configured"},
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{1, "Packet Interval sampling mode configured"},
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{0, NULL}
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};
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enum {
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V8PDU_NO_METHOD = 0,
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V8PDU_AS_METHOD,
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V8PDU_PROTO_METHOD,
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V8PDU_SPREFIX_METHOD,
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V8PDU_DPREFIX_METHOD,
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V8PDU_MATRIX_METHOD,
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V8PDU_DESTONLY_METHOD,
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V8PDU_SRCDEST_METHOD,
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V8PDU_FULL_METHOD,
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V8PDU_TOSAS_METHOD,
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V8PDU_TOSPROTOPORT_METHOD,
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V8PDU_TOSSRCPREFIX_METHOD,
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V8PDU_TOSDSTPREFIX_METHOD,
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V8PDU_TOSMATRIX_METHOD,
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V8PDU_PREPORTPROTOCOL_METHOD
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};
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static const value_string v8_agg[] = {
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{V8PDU_AS_METHOD, "V8 AS aggregation"},
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{V8PDU_PROTO_METHOD, "V8 Proto/Port aggregation"},
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{V8PDU_SPREFIX_METHOD, "V8 Source Prefix aggregation"},
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{V8PDU_DPREFIX_METHOD, "V8 Destination Prefix aggregation"},
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{V8PDU_MATRIX_METHOD, "V8 Network Matrix aggregation"},
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{V8PDU_DESTONLY_METHOD, "V8 Destination aggregation (Cisco Catalyst)"},
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{V8PDU_SRCDEST_METHOD, "V8 Src/Dest aggregation (Cisco Catalyst)"},
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{V8PDU_FULL_METHOD, "V8 Full aggregation (Cisco Catalyst)"},
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{V8PDU_TOSAS_METHOD, "V8 TOS+AS aggregation aggregation"},
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{V8PDU_TOSPROTOPORT_METHOD, "V8 TOS+Protocol aggregation"},
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{V8PDU_TOSSRCPREFIX_METHOD, "V8 TOS+Source Prefix aggregation"},
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{V8PDU_TOSDSTPREFIX_METHOD, "V8 TOS+Destination Prefix aggregation"},
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{V8PDU_TOSMATRIX_METHOD, "V8 TOS+Prefix Matrix aggregation"},
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{V8PDU_PREPORTPROTOCOL_METHOD, "V8 Port+Protocol aggregation"},
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{0, NULL}
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};
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/* Version 9 template cache structures */
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#define V9TEMPLATE_CACHE_MAX_ENTRIES 100
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struct v9_template_entry {
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guint16 type;
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guint16 length;
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};
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struct v9_template {
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guint16 id;
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guint16 count;
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guint32 length;
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guint32 source_id;
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guint32 source_addr;
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guint16 option_template; /* 0=data template, 1=option template */
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struct v9_template_entry *entries;
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};
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static struct v9_template v9_template_cache[V9TEMPLATE_CACHE_MAX_ENTRIES];
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/*
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* ethereal tree identifiers
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*/
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static int proto_netflow = -1;
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static int ett_netflow = -1;
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static int ett_unixtime = -1;
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static int ett_flow = -1;
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static int ett_template = -1;
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static int ett_dataflowset = -1;
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/*
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* cflow header
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*/
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static int hf_cflow_version = -1;
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static int hf_cflow_count = -1;
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static int hf_cflow_sysuptime = -1;
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static int hf_cflow_unix_secs = -1;
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static int hf_cflow_unix_nsecs = -1;
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static int hf_cflow_timestamp = -1;
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static int hf_cflow_samplingmode = -1;
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static int hf_cflow_samplerate = -1;
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/*
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* cflow version specific info
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*/
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static int hf_cflow_sequence = -1;
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static int hf_cflow_engine_type = -1;
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static int hf_cflow_engine_id = -1;
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static int hf_cflow_source_id = -1;
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static int hf_cflow_aggmethod = -1;
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static int hf_cflow_aggversion = -1;
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/* Version 9 */
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static int hf_cflow_template_flowset_id = -1;
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static int hf_cflow_data_flowset_id = -1;
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static int hf_cflow_options_flowset_id = -1;
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static int hf_cflow_flowset_id = -1;
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static int hf_cflow_flowset_length = -1;
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static int hf_cflow_template_id = -1;
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static int hf_cflow_template_field_count = -1;
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static int hf_cflow_template_field_type = -1;
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static int hf_cflow_template_field_length = -1;
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static int hf_cflow_option_scope_length = -1;
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static int hf_cflow_option_length = -1;
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static int hf_cflow_template_scope_field_type = -1;
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static int hf_cflow_template_scope_field_length = -1;
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/*
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* pdu storage
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*/
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static int hf_cflow_srcaddr = -1;
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static int hf_cflow_srcaddr_v6 = -1;
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static int hf_cflow_srcnet = -1;
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static int hf_cflow_dstaddr = -1;
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static int hf_cflow_dstaddr_v6 = -1;
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static int hf_cflow_dstnet = -1;
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static int hf_cflow_nexthop = -1;
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static int hf_cflow_nexthop_v6 = -1;
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static int hf_cflow_bgpnexthop = -1;
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static int hf_cflow_bgpnexthop_v6 = -1;
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static int hf_cflow_inputint = -1;
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static int hf_cflow_outputint = -1;
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static int hf_cflow_flows = -1;
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static int hf_cflow_packets = -1;
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static int hf_cflow_packets64 = -1;
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static int hf_cflow_packetsout = -1;
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static int hf_cflow_octets = -1;
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static int hf_cflow_octets64 = -1;
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static int hf_cflow_timestart = -1;
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static int hf_cflow_timeend = -1;
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static int hf_cflow_srcport = -1;
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static int hf_cflow_dstport = -1;
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static int hf_cflow_prot = -1;
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static int hf_cflow_tos = -1;
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static int hf_cflow_flags = -1;
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static int hf_cflow_tcpflags = -1;
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static int hf_cflow_dstas = -1;
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static int hf_cflow_srcas = -1;
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static int hf_cflow_dstmask = -1;
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static int hf_cflow_srcmask = -1;
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static int hf_cflow_routersc = -1;
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static int hf_cflow_mulpackets = -1;
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static int hf_cflow_muloctets = -1;
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static int hf_cflow_octets_exp = -1;
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static int hf_cflow_packets_exp = -1;
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static int hf_cflow_flows_exp = -1;
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static int hf_cflow_sampling_interval = -1;
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static int hf_cflow_sampling_algorithm = -1;
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static int hf_cflow_flow_active_timeout = -1;
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static int hf_cflow_flow_inactive_timeout = -1;
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void proto_reg_handoff_netflow(void);
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typedef int dissect_pdu_t(proto_tree * pdutree, tvbuff_t * tvb, int offset,
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int verspec);
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static int dissect_pdu(proto_tree * tree, tvbuff_t * tvb, int offset,
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int verspec);
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static int dissect_v8_aggpdu(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, int verspec);
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static int dissect_v8_flowpdu(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, int verspec);
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static int dissect_v9_flowset(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, int verspec);
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static int dissect_v9_data(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, guint16 id, guint length);
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static void dissect_v9_pdu(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, struct v9_template * template);
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static int dissect_v9_options(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int dissect_v9_template(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static void v9_template_add(struct v9_template * template);
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static struct v9_template *v9_template_get(guint16 id, guint32 src_addr,
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guint32 src_id);
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static gchar *getprefix(const guint32 * address, int prefix);
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static void dissect_netflow(tvbuff_t * tvb, packet_info * pinfo,
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proto_tree * tree);
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static int flow_process_ints(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int flow_process_ports(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int flow_process_timeperiod(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int flow_process_aspair(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int flow_process_sizecount(proto_tree * pdutree, tvbuff_t * tvb,
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int offset);
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static int flow_process_textfield(proto_tree * pdutree, tvbuff_t * tvb,
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int offset, int bytes,
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const char *text);
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static void
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dissect_netflow(tvbuff_t * tvb, packet_info * pinfo, proto_tree * tree)
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{
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proto_tree *netflow_tree = NULL;
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proto_tree *ti;
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proto_item *timeitem, *pduitem;
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proto_tree *timetree, *pdutree;
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unsigned int pduret, ver = 0, pdus = 0, x = 1, vspec;
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size_t available, pdusize, offset = 0;
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nstime_t ts;
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dissect_pdu_t *pduptr;
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if (check_col(pinfo->cinfo, COL_PROTOCOL))
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "CFLOW");
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if (check_col(pinfo->cinfo, COL_INFO))
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col_clear(pinfo->cinfo, COL_INFO);
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if (tree) {
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ti = proto_tree_add_item(tree, proto_netflow, tvb,
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offset, -1, FALSE);
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netflow_tree = proto_item_add_subtree(ti, ett_netflow);
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}
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ver = tvb_get_ntohs(tvb, offset);
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vspec = ver;
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switch (ver) {
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case 1:
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pdusize = V1PDU_SIZE;
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pduptr = &dissect_pdu;
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break;
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case 5:
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pdusize = V5PDU_SIZE;
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pduptr = &dissect_pdu;
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break;
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case 7:
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pdusize = V7PDU_SIZE;
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pduptr = &dissect_pdu;
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break;
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case 8:
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pdusize = -1; /* deferred */
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pduptr = &dissect_v8_aggpdu;
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break;
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case 9:
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pdusize = -1; /* deferred */
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pduptr = &dissect_v9_flowset;
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break;
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default:
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return;
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}
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if (tree)
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proto_tree_add_uint(netflow_tree, hf_cflow_version, tvb,
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offset, 2, ver);
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offset += 2;
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pdus = tvb_get_ntohs(tvb, offset);
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if (pdus <= 0)
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return;
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if (tree)
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proto_tree_add_uint(netflow_tree, hf_cflow_count, tvb,
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offset, 2, pdus);
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offset += 2;
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/*
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* set something interesting in the display now that we have info
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*/
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if (check_col(pinfo->cinfo, COL_INFO)) {
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if (ver == 9) {
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"total: %u (v%u) FlowSets", pdus, ver);
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} else {
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col_add_fstr(pinfo->cinfo, COL_INFO,
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"total: %u (v%u) flows", pdus, ver);
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}
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}
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/*
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* the rest is only interesting if we're displaying/searching the
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* packet
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*/
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if (!tree)
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return;
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proto_tree_add_item(netflow_tree, hf_cflow_sysuptime, tvb,
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offset, 4, FALSE);
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offset += 4;
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ts.secs = tvb_get_ntohl(tvb, offset);
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ts.nsecs = tvb_get_ntohl(tvb, offset + 4);
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timeitem = proto_tree_add_time(netflow_tree,
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hf_cflow_timestamp, tvb, offset,
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8, &ts);
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timetree = proto_item_add_subtree(timeitem, ett_unixtime);
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proto_tree_add_item(timetree, hf_cflow_unix_secs, tvb,
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offset, 4, FALSE);
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offset += 4;
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if (ver != 9) {
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proto_tree_add_item(timetree, hf_cflow_unix_nsecs, tvb,
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offset, 4, FALSE);
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offset += 4;
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}
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/*
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* version specific header
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*/
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if (ver == 5 || ver == 7 || ver == 8 || ver == 9) {
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proto_tree_add_item(netflow_tree, hf_cflow_sequence,
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tvb, offset, 4, FALSE);
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offset += 4;
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}
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if (ver == 5 || ver == 8) {
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proto_tree_add_item(netflow_tree, hf_cflow_engine_type,
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tvb, offset++, 1, FALSE);
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proto_tree_add_item(netflow_tree, hf_cflow_engine_id,
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tvb, offset++, 1, FALSE);
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} else if (ver == 9) {
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proto_tree_add_item(netflow_tree, hf_cflow_source_id,
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tvb, offset, 4, FALSE);
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offset += 4;
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}
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if (ver == 8) {
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vspec = tvb_get_guint8(tvb, offset);
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switch (vspec) {
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case V8PDU_AS_METHOD:
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pdusize = V8PDU_AS_SIZE;
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break;
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case V8PDU_PROTO_METHOD:
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pdusize = V8PDU_PROTO_SIZE;
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break;
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case V8PDU_SPREFIX_METHOD:
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pdusize = V8PDU_SPREFIX_SIZE;
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break;
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case V8PDU_DPREFIX_METHOD:
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pdusize = V8PDU_DPREFIX_SIZE;
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break;
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case V8PDU_MATRIX_METHOD:
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pdusize = V8PDU_MATRIX_SIZE;
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break;
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case V8PDU_DESTONLY_METHOD:
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pdusize = V8PDU_DESTONLY_SIZE;
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pduptr = &dissect_v8_flowpdu;
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break;
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case V8PDU_SRCDEST_METHOD:
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pdusize = V8PDU_SRCDEST_SIZE;
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pduptr = &dissect_v8_flowpdu;
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break;
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case V8PDU_FULL_METHOD:
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pdusize = V8PDU_FULL_SIZE;
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pduptr = &dissect_v8_flowpdu;
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break;
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case V8PDU_TOSAS_METHOD:
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pdusize = V8PDU_TOSAS_SIZE;
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break;
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case V8PDU_TOSPROTOPORT_METHOD:
|
|
pdusize = V8PDU_TOSPROTOPORT_SIZE;
|
|
break;
|
|
case V8PDU_TOSSRCPREFIX_METHOD:
|
|
pdusize = V8PDU_TOSSRCPREFIX_SIZE;
|
|
break;
|
|
case V8PDU_TOSDSTPREFIX_METHOD:
|
|
pdusize = V8PDU_TOSDSTPREFIX_SIZE;
|
|
break;
|
|
case V8PDU_TOSMATRIX_METHOD:
|
|
pdusize = V8PDU_TOSMATRIX_SIZE;
|
|
break;
|
|
case V8PDU_PREPORTPROTOCOL_METHOD:
|
|
pdusize = V8PDU_PREPORTPROTOCOL_SIZE;
|
|
break;
|
|
default:
|
|
pdusize = -1;
|
|
vspec = 0;
|
|
break;
|
|
}
|
|
proto_tree_add_uint(netflow_tree, hf_cflow_aggmethod,
|
|
tvb, offset++, 1, vspec);
|
|
proto_tree_add_item(netflow_tree, hf_cflow_aggversion,
|
|
tvb, offset++, 1, FALSE);
|
|
}
|
|
if (ver == 7 || ver == 8)
|
|
offset = flow_process_textfield(netflow_tree, tvb, offset, 4,
|
|
"reserved");
|
|
else if (ver == 5) {
|
|
proto_tree_add_item(netflow_tree, hf_cflow_samplingmode,
|
|
tvb, offset, 2, FALSE);
|
|
proto_tree_add_item(netflow_tree, hf_cflow_samplerate,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
}
|
|
|
|
/*
|
|
* everything below here should be payload
|
|
*/
|
|
for (x = 1; x < pdus + 1; x++) {
|
|
/*
|
|
* make sure we have a pdu's worth of data
|
|
*/
|
|
available = tvb_length_remaining(tvb, offset);
|
|
if (ver == 9 && available >= 4) {
|
|
/* pdusize can be different for each v9 flowset */
|
|
pdusize = tvb_get_ntohs(tvb, offset + 2);
|
|
}
|
|
|
|
if (available < pdusize)
|
|
break;
|
|
|
|
if (ver == 9) {
|
|
pduitem = proto_tree_add_text(netflow_tree, tvb,
|
|
offset, pdusize, "FlowSet %u/%u", x, pdus);
|
|
} else {
|
|
pduitem = proto_tree_add_text(netflow_tree, tvb,
|
|
offset, pdusize, "pdu %u/%u", x, pdus);
|
|
}
|
|
pdutree = proto_item_add_subtree(pduitem, ett_flow);
|
|
|
|
pduret = pduptr(pdutree, tvb, offset, vspec);
|
|
|
|
if (pduret < pdusize) pduret = pdusize; /* padding */
|
|
|
|
/*
|
|
* if we came up short, stop processing
|
|
*/
|
|
if (pduret == pdusize)
|
|
offset += pduret;
|
|
else
|
|
break;
|
|
}
|
|
}
|
|
|
|
/*
|
|
* flow_process_* == common groups of fields, probably could be inline
|
|
*/
|
|
|
|
static int
|
|
flow_process_ints(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
proto_tree_add_item(pdutree, hf_cflow_inputint, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_outputint, tvb, offset, 2,
|
|
FALSE);
|
|
offset += 2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
flow_process_ports(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
proto_tree_add_item(pdutree, hf_cflow_srcport, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_dstport, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
flow_process_timeperiod(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
nstime_t ts;
|
|
|
|
ts.secs = tvb_get_ntohl(tvb, offset) / 1000;
|
|
ts.nsecs = ((tvb_get_ntohl(tvb, offset) % 1000) * 1000000);
|
|
proto_tree_add_time(pdutree, hf_cflow_timestart, tvb, offset, 4, &ts);
|
|
offset += 4;
|
|
|
|
ts.secs = tvb_get_ntohl(tvb, offset) / 1000;
|
|
ts.nsecs = ((tvb_get_ntohl(tvb, offset) % 1000) * 1000000);
|
|
proto_tree_add_time(pdutree, hf_cflow_timeend, tvb, offset, 4, &ts);
|
|
offset += 4;
|
|
|
|
return offset;
|
|
}
|
|
|
|
|
|
static int
|
|
flow_process_aspair(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
proto_tree_add_item(pdutree, hf_cflow_srcas, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_dstas, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
flow_process_sizecount(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
proto_tree_add_item(pdutree, hf_cflow_packets, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_octets, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
flow_process_textfield(proto_tree * pdutree, tvbuff_t * tvb, int offset,
|
|
int bytes, const char *text)
|
|
{
|
|
proto_tree_add_text(pdutree, tvb, offset, bytes, text);
|
|
offset += bytes;
|
|
|
|
return offset;
|
|
}
|
|
|
|
static int
|
|
dissect_v8_flowpdu(proto_tree * pdutree, tvbuff_t * tvb, int offset,
|
|
int verspec)
|
|
{
|
|
int startoffset = offset;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_dstaddr, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
if (verspec != V8PDU_DESTONLY_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_srcaddr, tvb, offset, 4,
|
|
FALSE);
|
|
offset += 4;
|
|
}
|
|
if (verspec == V8PDU_FULL_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_dstport, tvb, offset, 2,
|
|
FALSE);
|
|
offset += 2;
|
|
proto_tree_add_item(pdutree, hf_cflow_srcport, tvb, offset, 2,
|
|
FALSE);
|
|
offset += 2;
|
|
}
|
|
|
|
offset = flow_process_sizecount(pdutree, tvb, offset);
|
|
offset = flow_process_timeperiod(pdutree, tvb, offset);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_outputint, tvb, offset, 2,
|
|
FALSE);
|
|
offset += 2;
|
|
|
|
if (verspec != V8PDU_DESTONLY_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_inputint, tvb, offset, 2,
|
|
FALSE);
|
|
offset += 2;
|
|
}
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb, offset++, 1, FALSE);
|
|
if (verspec == V8PDU_FULL_METHOD)
|
|
proto_tree_add_item(pdutree, hf_cflow_prot, tvb, offset++, 1,
|
|
FALSE);
|
|
offset = flow_process_textfield(pdutree, tvb, offset, 1, "marked tos");
|
|
|
|
if (verspec == V8PDU_SRCDEST_METHOD)
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2,
|
|
"reserved");
|
|
else if (verspec == V8PDU_FULL_METHOD)
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 1, "padding");
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 4, "extra packets");
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_routersc, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
return (offset - startoffset);
|
|
}
|
|
|
|
/*
|
|
* dissect a version 8 pdu, returning the length of the pdu processed
|
|
*/
|
|
|
|
static int
|
|
dissect_v8_aggpdu(proto_tree * pdutree, tvbuff_t * tvb, int offset,
|
|
int verspec)
|
|
{
|
|
int startoffset = offset;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_flows, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
offset = flow_process_sizecount(pdutree, tvb, offset);
|
|
offset = flow_process_timeperiod(pdutree, tvb, offset);
|
|
|
|
switch (verspec) {
|
|
case V8PDU_AS_METHOD:
|
|
case V8PDU_TOSAS_METHOD:
|
|
offset = flow_process_aspair(pdutree, tvb, offset);
|
|
|
|
if (verspec == V8PDU_TOSAS_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb,
|
|
offset++, 1, FALSE);
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 1,
|
|
"padding");
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2,
|
|
"reserved");
|
|
}
|
|
break;
|
|
case V8PDU_PROTO_METHOD:
|
|
case V8PDU_TOSPROTOPORT_METHOD:
|
|
proto_tree_add_item(pdutree, hf_cflow_prot, tvb, offset++, 1,
|
|
FALSE);
|
|
|
|
if (verspec == V8PDU_PROTO_METHOD)
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 1,
|
|
"padding");
|
|
else if (verspec == V8PDU_TOSPROTOPORT_METHOD)
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb,
|
|
offset++, 1, FALSE);
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2,
|
|
"reserved");
|
|
offset = flow_process_ports(pdutree, tvb, offset);
|
|
|
|
if (verspec == V8PDU_TOSPROTOPORT_METHOD)
|
|
offset = flow_process_ints(pdutree, tvb, offset);
|
|
break;
|
|
case V8PDU_SPREFIX_METHOD:
|
|
case V8PDU_DPREFIX_METHOD:
|
|
case V8PDU_TOSSRCPREFIX_METHOD:
|
|
case V8PDU_TOSDSTPREFIX_METHOD:
|
|
proto_tree_add_item(pdutree,
|
|
verspec ==
|
|
V8PDU_SPREFIX_METHOD ?
|
|
hf_cflow_srcnet : hf_cflow_dstnet, tvb,
|
|
offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(pdutree,
|
|
verspec ==
|
|
V8PDU_SPREFIX_METHOD ?
|
|
hf_cflow_srcmask : hf_cflow_dstmask, tvb,
|
|
offset++, 1, FALSE);
|
|
|
|
if (verspec == V8PDU_SPREFIX_METHOD
|
|
|| verspec == V8PDU_DPREFIX_METHOD)
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 1,
|
|
"padding");
|
|
else if (verspec == V8PDU_TOSSRCPREFIX_METHOD
|
|
|| verspec == V8PDU_TOSDSTPREFIX_METHOD)
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb,
|
|
offset++, 1, FALSE);
|
|
|
|
proto_tree_add_item(pdutree,
|
|
verspec ==
|
|
V8PDU_SPREFIX_METHOD ? hf_cflow_srcas
|
|
: hf_cflow_dstas, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(pdutree,
|
|
verspec ==
|
|
V8PDU_SPREFIX_METHOD ?
|
|
hf_cflow_inputint : hf_cflow_outputint,
|
|
tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2,
|
|
"reserved");
|
|
break;
|
|
case V8PDU_MATRIX_METHOD:
|
|
case V8PDU_TOSMATRIX_METHOD:
|
|
case V8PDU_PREPORTPROTOCOL_METHOD:
|
|
proto_tree_add_item(pdutree, hf_cflow_srcnet, tvb, offset, 4,
|
|
FALSE);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_dstnet, tvb, offset, 4,
|
|
FALSE);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_srcmask, tvb, offset++,
|
|
1, FALSE);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_dstmask, tvb, offset++,
|
|
1, FALSE);
|
|
|
|
if (verspec == V8PDU_TOSMATRIX_METHOD ||
|
|
verspec == V8PDU_PREPORTPROTOCOL_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb,
|
|
offset++, 1, FALSE);
|
|
if (verspec == V8PDU_TOSMATRIX_METHOD) {
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb,
|
|
offset, 1,
|
|
"padding");
|
|
} else if (verspec == V8PDU_PREPORTPROTOCOL_METHOD) {
|
|
proto_tree_add_item(pdutree, hf_cflow_prot,
|
|
tvb, offset++, 1, FALSE);
|
|
}
|
|
} else {
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2,
|
|
"reserved");
|
|
}
|
|
|
|
if (verspec == V8PDU_MATRIX_METHOD
|
|
|| verspec == V8PDU_TOSMATRIX_METHOD) {
|
|
offset = flow_process_aspair(pdutree, tvb, offset);
|
|
} else if (verspec == V8PDU_PREPORTPROTOCOL_METHOD) {
|
|
offset = flow_process_ports(pdutree, tvb, offset);
|
|
}
|
|
|
|
offset = flow_process_ints(pdutree, tvb, offset);
|
|
break;
|
|
}
|
|
|
|
|
|
return (offset - startoffset);
|
|
}
|
|
|
|
/* Dissect a version 9 FlowSet and return the length we processed. */
|
|
|
|
static int
|
|
dissect_v9_flowset(proto_tree * pdutree, tvbuff_t * tvb, int offset, int ver)
|
|
{
|
|
int length;
|
|
guint16 flowset_id;
|
|
|
|
if (ver != 9)
|
|
return (0);
|
|
|
|
flowset_id = tvb_get_ntohs(tvb, offset);
|
|
if (flowset_id == 0) {
|
|
/* Template */
|
|
proto_tree_add_item(pdutree, hf_cflow_template_flowset_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_flowset_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
dissect_v9_template(pdutree, tvb, offset);
|
|
} else if (flowset_id == 1) {
|
|
/* Options */
|
|
proto_tree_add_item(pdutree, hf_cflow_options_flowset_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_flowset_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
dissect_v9_options(pdutree, tvb, offset);
|
|
} else if (flowset_id >= 2 && flowset_id <= 255) {
|
|
/* Reserved */
|
|
proto_tree_add_item(pdutree, hf_cflow_flowset_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_flowset_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
} else {
|
|
/* Data */
|
|
proto_tree_add_item(pdutree, hf_cflow_data_flowset_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_flowset_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
/*
|
|
* The length includes the length of the FlowSet ID and
|
|
* the length field itself.
|
|
*/
|
|
length -= 4;
|
|
if (length > 0) {
|
|
dissect_v9_data(pdutree, tvb, offset, flowset_id,
|
|
(guint)length);
|
|
}
|
|
}
|
|
|
|
return (length);
|
|
}
|
|
|
|
static int
|
|
dissect_v9_data(proto_tree * pdutree, tvbuff_t * tvb, int offset,
|
|
guint16 id, guint length)
|
|
{
|
|
struct v9_template *template;
|
|
proto_tree *data_tree;
|
|
proto_item *data_item;
|
|
|
|
template = v9_template_get(id, 0, 0);
|
|
if (template != NULL && template->length != 0) {
|
|
int count;
|
|
|
|
count = 1;
|
|
while (length >= template->length) {
|
|
data_item = proto_tree_add_text(pdutree, tvb,
|
|
offset, template->length, "pdu %d", count++);
|
|
data_tree = proto_item_add_subtree(data_item,
|
|
ett_dataflowset);
|
|
|
|
dissect_v9_pdu(data_tree, tvb, offset, template);
|
|
|
|
offset += template->length;
|
|
length -= template->length;
|
|
}
|
|
if (length != 0) {
|
|
proto_tree_add_text(pdutree, tvb, offset, length,
|
|
"Padding (%u byte%s)",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
} else {
|
|
proto_tree_add_text(pdutree, tvb, offset, length,
|
|
"Data (%u byte%s), no template found",
|
|
length, plurality(length, "", "s"));
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static void
|
|
dissect_v9_pdu(proto_tree * pdutree, tvbuff_t * tvb, int offset,
|
|
struct v9_template * template)
|
|
{
|
|
int i;
|
|
|
|
for (i = 0; i < template->count; i++) {
|
|
guint32 ipv4addr;
|
|
guint8 ipv6addr[16];
|
|
guint16 type, length;
|
|
nstime_t ts;
|
|
|
|
type = template->entries[i].type;
|
|
length = template->entries[i].length;
|
|
|
|
switch (type) {
|
|
case 1: /* bytes */
|
|
if (length == 4) {
|
|
proto_tree_add_item(pdutree, hf_cflow_octets,
|
|
tvb, offset, length, FALSE);
|
|
} else if (length == 8) {
|
|
proto_tree_add_item(pdutree, hf_cflow_octets64,
|
|
tvb, offset, length, FALSE);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"Octets: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 2: /* packets */
|
|
if (length == 4) {
|
|
proto_tree_add_item(pdutree, hf_cflow_packets,
|
|
tvb, offset, length, FALSE);
|
|
} else if (length == 8) {
|
|
proto_tree_add_item(pdutree, hf_cflow_packets64,
|
|
tvb, offset, length, FALSE);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"Packets: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 3: /* flows */
|
|
if (length == 4) {
|
|
proto_tree_add_item(pdutree, hf_cflow_flows,
|
|
tvb, offset, length, FALSE);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"Flows: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 4: /* proto */
|
|
proto_tree_add_item(pdutree, hf_cflow_prot,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 5: /* TOS */
|
|
proto_tree_add_item(pdutree, hf_cflow_tos,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 6: /* TCP flags */
|
|
proto_tree_add_item(pdutree, hf_cflow_tcpflags,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 7: /* source port */
|
|
proto_tree_add_item(pdutree, hf_cflow_srcport,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 8: /* source IP */
|
|
if (length == 4) {
|
|
tvb_memcpy(tvb, (guint8 *)&ipv4addr, offset,
|
|
sizeof(ipv4addr));
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_srcaddr,
|
|
tvb, offset, length, ipv4addr);
|
|
} else if (length == 16) {
|
|
tvb_memcpy(tvb, ipv6addr, offset,
|
|
sizeof(ipv6addr));
|
|
proto_tree_add_ipv6(pdutree, hf_cflow_srcaddr_v6,
|
|
tvb, offset, length, ipv6addr);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"SrcAddr: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 9: /* source mask */
|
|
proto_tree_add_item(pdutree, hf_cflow_srcmask,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 10: /* input SNMP */
|
|
proto_tree_add_item(pdutree, hf_cflow_inputint,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 11: /* dest port */
|
|
proto_tree_add_item(pdutree, hf_cflow_dstport,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 12: /* dest IP */
|
|
if (length == 4) {
|
|
tvb_memcpy(tvb, (guint8 *)&ipv4addr, offset,
|
|
sizeof(ipv4addr));
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_dstaddr,
|
|
tvb, offset, length, ipv4addr);
|
|
} else if (length == 16) {
|
|
tvb_memcpy(tvb, ipv6addr, offset,
|
|
sizeof(ipv6addr));
|
|
proto_tree_add_ipv6(pdutree, hf_cflow_dstaddr_v6,
|
|
tvb, offset, length, ipv6addr);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"DstAddr: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 13: /* dest mask */
|
|
proto_tree_add_item(pdutree, hf_cflow_dstmask,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 14: /* output SNMP */
|
|
proto_tree_add_item(pdutree, hf_cflow_outputint,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 15: /* nexthop IP */
|
|
if (length == 4) {
|
|
tvb_memcpy(tvb, (guint8 *)&ipv4addr, offset,
|
|
sizeof(ipv4addr));
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_nexthop,
|
|
tvb, offset, length, ipv4addr);
|
|
} else if (length == 16) {
|
|
tvb_memcpy(tvb, ipv6addr, offset,
|
|
sizeof(ipv6addr));
|
|
proto_tree_add_ipv6(pdutree, hf_cflow_nexthop_v6,
|
|
tvb, offset, length, ipv6addr);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"NextHop: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 16: /* source AS */
|
|
proto_tree_add_item(pdutree, hf_cflow_srcas,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 17: /* dest AS */
|
|
proto_tree_add_item(pdutree, hf_cflow_dstas,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 18: /* BGP nexthop IP */
|
|
if (length == 4) {
|
|
tvb_memcpy(tvb, (guint8 *)&ipv4addr, offset,
|
|
sizeof(ipv4addr));
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_bgpnexthop,
|
|
tvb, offset, length, ipv4addr);
|
|
} else if (length == 16) {
|
|
tvb_memcpy(tvb, ipv6addr, offset,
|
|
sizeof(ipv6addr));
|
|
proto_tree_add_ipv6(pdutree, hf_cflow_bgpnexthop_v6,
|
|
tvb, offset, length, ipv6addr);
|
|
} else {
|
|
proto_tree_add_text(pdutree,
|
|
tvb, offset, length,
|
|
"BGPNextHop: length %u", length);
|
|
}
|
|
break;
|
|
|
|
case 19: /* multicast packets */
|
|
proto_tree_add_item(pdutree, hf_cflow_mulpackets,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 20: /* multicast octets */
|
|
proto_tree_add_item(pdutree, hf_cflow_muloctets,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 21: /* last switched */
|
|
ts.secs = tvb_get_ntohl(tvb, offset) / 1000;
|
|
ts.nsecs = 0;
|
|
proto_tree_add_time(pdutree, hf_cflow_timeend,
|
|
tvb, offset, length, &ts);
|
|
break;
|
|
|
|
case 22: /* first switched */
|
|
ts.secs = tvb_get_ntohl(tvb, offset) / 1000;
|
|
ts.nsecs = 0;
|
|
proto_tree_add_time(pdutree, hf_cflow_timestart,
|
|
tvb, offset, length, &ts);
|
|
break;
|
|
|
|
case 34: /* sampling interval */
|
|
proto_tree_add_item(pdutree, hf_cflow_sampling_interval,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 35: /* sampling algorithm */
|
|
proto_tree_add_item(pdutree, hf_cflow_sampling_algorithm,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 36: /* flow active timeout */
|
|
proto_tree_add_item(pdutree, hf_cflow_flow_active_timeout,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 37: /* flow inactive timeout */
|
|
proto_tree_add_item(pdutree, hf_cflow_flow_inactive_timeout,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 40: /* bytes exported */
|
|
proto_tree_add_item(pdutree, hf_cflow_octets_exp,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 41: /* packets exported */
|
|
proto_tree_add_item(pdutree, hf_cflow_packets_exp,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
case 42: /* flows exported */
|
|
proto_tree_add_item(pdutree, hf_cflow_flows_exp,
|
|
tvb, offset, length, FALSE);
|
|
break;
|
|
|
|
default:
|
|
proto_tree_add_text(pdutree, tvb, offset, length,
|
|
"Type %u", type);
|
|
break;
|
|
}
|
|
|
|
offset += length;
|
|
}
|
|
}
|
|
|
|
static int
|
|
dissect_v9_options(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
guint16 length, option_scope_len, option_len, i, id, size;
|
|
struct v9_template template;
|
|
int template_offset;
|
|
|
|
id = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
option_scope_len = length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_option_scope_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
option_len = length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_option_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
for(i=0; i<option_scope_len; i++) {
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_scope_field_type, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2; i += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_scope_field_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2; i += 2;
|
|
}
|
|
|
|
template_offset = offset;
|
|
|
|
for(i=0; i<option_len;) {
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_field_type, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2; i += 2;
|
|
|
|
length = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_field_length, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2; i += 2;
|
|
}
|
|
|
|
/* Cache template */
|
|
memset(&template, 0, sizeof(template));
|
|
template.id = id;
|
|
template.count = option_len/4;
|
|
template.source_addr = 0; /* XXX */
|
|
template.source_id = 0; /* XXX */
|
|
template.option_template = 1; /* Option template */
|
|
size = template.count * sizeof(struct v9_template_entry);
|
|
template.entries = g_malloc(size);
|
|
tvb_memcpy(tvb, (guint8 *)template.entries, template_offset, size);
|
|
|
|
v9_template_add(&template);
|
|
|
|
return (0);
|
|
}
|
|
|
|
static int
|
|
dissect_v9_template(proto_tree * pdutree, tvbuff_t * tvb, int offset)
|
|
{
|
|
struct v9_template template;
|
|
proto_tree *template_tree;
|
|
proto_item *template_item;
|
|
guint16 id, count;
|
|
gint32 i;
|
|
|
|
id = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_id, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
count = tvb_get_ntohs(tvb, offset);
|
|
proto_tree_add_item(pdutree, hf_cflow_template_field_count, tvb,
|
|
offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
/* Cache template */
|
|
memset(&template, 0, sizeof(template));
|
|
template.id = id;
|
|
template.count = count;
|
|
template.source_addr = 0; /* XXX */
|
|
template.source_id = 0; /* XXX */
|
|
template.option_template = 0; /* Data template */
|
|
template.entries = g_malloc(count * sizeof(struct v9_template_entry));
|
|
tvb_memcpy(tvb, (guint8 *)template.entries, offset,
|
|
count * sizeof(struct v9_template_entry));
|
|
v9_template_add(&template);
|
|
|
|
for (i = 1; i <= count; i++) {
|
|
guint16 type, length;
|
|
|
|
type = tvb_get_ntohs(tvb, offset);
|
|
length = tvb_get_ntohs(tvb, offset + 2);
|
|
|
|
template_item = proto_tree_add_text(pdutree, tvb,
|
|
offset, 4, "Field (%u/%u)", i, count);
|
|
template_tree = proto_item_add_subtree(template_item, ett_template);
|
|
|
|
proto_tree_add_item(template_tree,
|
|
hf_cflow_template_field_type, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
|
|
proto_tree_add_item(template_tree,
|
|
hf_cflow_template_field_length, tvb, offset, 2, FALSE);
|
|
offset += 2;
|
|
}
|
|
|
|
return (0);
|
|
}
|
|
|
|
static value_string v9_template_types[] = {
|
|
{ 1, "BYTES" },
|
|
{ 2, "PKTS" },
|
|
{ 3, "FLOWS" },
|
|
{ 4, "PROT" },
|
|
{ 5, "TOS" },
|
|
{ 6, "TCP_FLAGS" },
|
|
{ 7, "L4_SRC_PORT" },
|
|
{ 8, "IP_SRC_ADDR" },
|
|
{ 9, "SRC_MASK" },
|
|
{ 10, "INPUT_SNMP" },
|
|
{ 11, "L4_DST_PORT" },
|
|
{ 12, "IP_DST_ADDR" },
|
|
{ 13, "DST_MASK" },
|
|
{ 14, "OUTPUT_SNMP" },
|
|
{ 15, "IP_NEXT_HOP" },
|
|
{ 16, "SRC_AS" },
|
|
{ 17, "DST_AS" },
|
|
{ 18, "BGP_NEXT_HOP" },
|
|
{ 19, "MUL_DPKTS" },
|
|
{ 20, "MUL_DOCTETS" },
|
|
{ 21, "LAST_SWITCHED" },
|
|
{ 22, "FIRST_SWITCHED" },
|
|
{ 27, "IPV6_SRC_ADDR" },
|
|
{ 28, "IPV6_DST_ADDR" },
|
|
{ 29, "IPV6_SRC_MASK" },
|
|
{ 30, "IPV6_DST_MASK" },
|
|
{ 31, "FLOW_LABEL" },
|
|
{ 32, "ICMP_TYPE" },
|
|
{ 33, "IGMP_TYPE" },
|
|
{ 34, "SAMPLING_INTERVAL" },
|
|
{ 35, "SAMPLING_ALGORITHM" },
|
|
{ 36, "FLOW_ACTIVE_TIMEOUT" },
|
|
{ 37, "FLOW_INACTIVE_TIMEOUT" },
|
|
{ 38, "ENGINE_TYPE" },
|
|
{ 39, "ENGINE_ID" },
|
|
{ 24, "OUT_PKTS" },
|
|
{ 40, "TOTAL_BYTES_EXP" },
|
|
{ 41, "TOTAL_PKTS_EXP" },
|
|
{ 42, "TOTAL_FLOWS_EXP" },
|
|
{ 56, "SRC_MAC" },
|
|
{ 57, "DST_MAC" },
|
|
{ 58, "SRC_VLAN" },
|
|
{ 59, "DST_VLAN" },
|
|
{ 60, "IP_PROTOCOL_VERSION" },
|
|
{ 61, "DIRECTION" },
|
|
{ 62, "IPV6_NEXT_HOP" },
|
|
{ 63, "BPG_IPV6_NEXT_HOP" },
|
|
{ 64, "IPV6_OPTION_HEADERS" },
|
|
{ 70, "MPLS_LABEL_1" },
|
|
{ 71, "MPLS_LABEL_2" },
|
|
{ 72, "MPLS_LABEL_3" },
|
|
{ 73, "MPLS_LABEL_4" },
|
|
{ 74, "MPLS_LABEL_5" },
|
|
{ 75, "MPLS_LABEL_6" },
|
|
{ 76, "MPLS_LABEL_7" },
|
|
{ 71, "MPLS_LABEL_8" },
|
|
{ 72, "MPLS_LABEL_9" },
|
|
{ 72, "MPLS_LABEL_10" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
static value_string v9_scope_field_types[] = {
|
|
{ 1, "System" },
|
|
{ 2, "Interface" },
|
|
{ 3, "Line Card" },
|
|
{ 4, "NetFlow Cache" },
|
|
{ 5, "Template" },
|
|
{ 0, NULL },
|
|
};
|
|
|
|
static void
|
|
v9_template_add(struct v9_template *template)
|
|
{
|
|
int i;
|
|
|
|
/* Add up the actual length of the data and store in proper byte order */
|
|
template->length = 0;
|
|
for (i = 0; i < template->count; i++) {
|
|
template->entries[i].type = g_ntohs(template->entries[i].type);
|
|
template->entries[i].length = g_ntohs(template->entries[i].length);
|
|
template->length += template->entries[i].length;
|
|
}
|
|
|
|
memmove(&v9_template_cache[template->id % V9TEMPLATE_CACHE_MAX_ENTRIES],
|
|
template, sizeof(*template));
|
|
}
|
|
|
|
static struct v9_template *
|
|
v9_template_get(guint16 id, guint32 src_addr, guint32 src_id)
|
|
{
|
|
struct v9_template *template;
|
|
|
|
src_addr = 0;
|
|
template = &v9_template_cache[id % V9TEMPLATE_CACHE_MAX_ENTRIES];
|
|
|
|
if (template->id != id ||
|
|
template->source_addr != src_addr ||
|
|
template->source_id != src_id) {
|
|
template = NULL;
|
|
}
|
|
|
|
return (template);
|
|
}
|
|
|
|
/*
|
|
* dissect a version 1, 5, or 7 pdu and return the length of the pdu we
|
|
* processed
|
|
*/
|
|
|
|
static int
|
|
dissect_pdu(proto_tree * pdutree, tvbuff_t * tvb, int offset, int ver)
|
|
{
|
|
int startoffset = offset;
|
|
guint32 srcaddr, dstaddr;
|
|
guint8 mask;
|
|
nstime_t ts;
|
|
|
|
memset(&ts, '\0', sizeof(ts));
|
|
|
|
/*
|
|
* memcpy so we can use the values later to calculate a prefix
|
|
*/
|
|
tvb_memcpy(tvb, (guint8 *) & srcaddr, offset, 4);
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_srcaddr, tvb, offset, 4,
|
|
srcaddr);
|
|
offset += 4;
|
|
|
|
tvb_memcpy(tvb, (guint8 *) & dstaddr, offset, 4);
|
|
proto_tree_add_ipv4(pdutree, hf_cflow_dstaddr, tvb, offset, 4,
|
|
dstaddr);
|
|
offset += 4;
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_nexthop, tvb, offset, 4, FALSE);
|
|
offset += 4;
|
|
|
|
offset = flow_process_ints(pdutree, tvb, offset);
|
|
offset = flow_process_sizecount(pdutree, tvb, offset);
|
|
offset = flow_process_timeperiod(pdutree, tvb, offset);
|
|
offset = flow_process_ports(pdutree, tvb, offset);
|
|
|
|
/*
|
|
* and the similarities end here
|
|
*/
|
|
if (ver == 1) {
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2, "padding");
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_prot, tvb, offset++, 1,
|
|
FALSE);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb, offset++, 1,
|
|
FALSE);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_tcpflags, tvb, offset++,
|
|
1, FALSE);
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 3, "padding");
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 4,
|
|
"reserved");
|
|
} else {
|
|
if (ver == 5)
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 1,
|
|
"padding");
|
|
else {
|
|
proto_tree_add_item(pdutree, hf_cflow_flags, tvb,
|
|
offset++, 1, FALSE);
|
|
}
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_tcpflags, tvb, offset++,
|
|
1, FALSE);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_prot, tvb, offset++, 1,
|
|
FALSE);
|
|
|
|
proto_tree_add_item(pdutree, hf_cflow_tos, tvb, offset++, 1,
|
|
FALSE);
|
|
|
|
offset = flow_process_aspair(pdutree, tvb, offset);
|
|
|
|
mask = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(pdutree, tvb, offset, 1,
|
|
"SrcMask: %u (prefix: %s/%u)",
|
|
mask, getprefix(&srcaddr, mask),
|
|
mask != 0 ? mask : 32);
|
|
proto_tree_add_uint_hidden(pdutree, hf_cflow_srcmask, tvb,
|
|
offset++, 1, mask);
|
|
|
|
mask = tvb_get_guint8(tvb, offset);
|
|
proto_tree_add_text(pdutree, tvb, offset, 1,
|
|
"DstMask: %u (prefix: %s/%u)",
|
|
mask, getprefix(&dstaddr, mask),
|
|
mask != 0 ? mask : 32);
|
|
proto_tree_add_uint_hidden(pdutree, hf_cflow_dstmask, tvb,
|
|
offset++, 1, mask);
|
|
|
|
offset =
|
|
flow_process_textfield(pdutree, tvb, offset, 2, "padding");
|
|
|
|
if (ver == 7) {
|
|
proto_tree_add_item(pdutree, hf_cflow_routersc, tvb,
|
|
offset, 4, FALSE);
|
|
offset += 4;
|
|
}
|
|
}
|
|
|
|
return (offset - startoffset);
|
|
}
|
|
|
|
static gchar *
|
|
getprefix(const guint32 * address, int prefix)
|
|
{
|
|
guint32 gprefix;
|
|
|
|
gprefix = *address & g_htonl((0xffffffff << (32 - prefix)));
|
|
|
|
return (ip_to_str((const guint8 *)&gprefix));
|
|
}
|
|
|
|
|
|
static void
|
|
netflow_reinit(void)
|
|
{
|
|
int i;
|
|
|
|
/*
|
|
* Clear out the template cache.
|
|
* Free the table of fields for each entry, and then zero out
|
|
* the cache.
|
|
*/
|
|
for (i = 0; i < V9TEMPLATE_CACHE_MAX_ENTRIES; i++)
|
|
g_free(v9_template_cache[i].entries);
|
|
memset(v9_template_cache, 0, sizeof v9_template_cache);
|
|
}
|
|
|
|
void
|
|
proto_register_netflow(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
/*
|
|
* flow header
|
|
*/
|
|
{&hf_cflow_version,
|
|
{"Version", "cflow.version",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"NetFlow Version", HFILL}
|
|
},
|
|
{&hf_cflow_count,
|
|
{"Count", "cflow.count",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Count of PDUs", HFILL}
|
|
},
|
|
{&hf_cflow_sysuptime,
|
|
{"SysUptime", "cflow.sysuptime",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Time since router booted (in milliseconds)", HFILL}
|
|
},
|
|
|
|
{&hf_cflow_timestamp,
|
|
{"Timestamp", "cflow.timestamp",
|
|
FT_ABSOLUTE_TIME, BASE_NONE, NULL, 0x0,
|
|
"Current seconds since epoch", HFILL}
|
|
},
|
|
{&hf_cflow_unix_secs,
|
|
{"CurrentSecs", "cflow.unix_secs",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Current seconds since epoch", HFILL}
|
|
},
|
|
{&hf_cflow_unix_nsecs,
|
|
{"CurrentNSecs", "cflow.unix_nsecs",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Residual nanoseconds since epoch", HFILL}
|
|
},
|
|
{&hf_cflow_samplingmode,
|
|
{"SamplingMode", "cflow.samplingmode",
|
|
FT_UINT16, BASE_DEC, VALS(v5_sampling_mode), 0xC000,
|
|
"Sampling Mode of exporter", HFILL}
|
|
},
|
|
{&hf_cflow_samplerate,
|
|
{"SampleRate", "cflow.samplerate",
|
|
FT_UINT16, BASE_DEC, NULL, 0x3FFF,
|
|
"Sample Frequency of exporter", HFILL}
|
|
},
|
|
|
|
/*
|
|
* end version-agnostic header
|
|
* version-specific flow header
|
|
*/
|
|
{&hf_cflow_sequence,
|
|
{"FlowSequence", "cflow.sequence",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Sequence number of flows seen", HFILL}
|
|
},
|
|
{&hf_cflow_engine_type,
|
|
{"EngineType", "cflow.engine_type",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Flow switching engine type", HFILL}
|
|
},
|
|
{&hf_cflow_engine_id,
|
|
{"EngineId", "cflow.engine_id",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Slot number of switching engine", HFILL}
|
|
},
|
|
{&hf_cflow_source_id,
|
|
{"SourceId", "cflow.source_id",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Identifier for export device", HFILL}
|
|
},
|
|
{&hf_cflow_aggmethod,
|
|
{"AggMethod", "cflow.aggmethod",
|
|
FT_UINT8, BASE_DEC, VALS(v8_agg), 0x0,
|
|
"CFlow V8 Aggregation Method", HFILL}
|
|
},
|
|
{&hf_cflow_aggversion,
|
|
{"AggVersion", "cflow.aggversion",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"CFlow V8 Aggregation Version", HFILL}
|
|
},
|
|
/*
|
|
* end version specific header storage
|
|
*/
|
|
/*
|
|
* Version 9
|
|
*/
|
|
{&hf_cflow_flowset_id,
|
|
{"FlowSet Id", "cflow.flowset_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"FlowSet Id", HFILL}
|
|
},
|
|
{&hf_cflow_data_flowset_id,
|
|
{"Data FlowSet (Template Id)", "cflow.data_flowset_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Data FlowSet with corresponding to a template Id", HFILL}
|
|
},
|
|
{&hf_cflow_options_flowset_id,
|
|
{"Options FlowSet", "cflow.options_flowset_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Options FlowSet", HFILL}
|
|
},
|
|
{&hf_cflow_template_flowset_id,
|
|
{"Template FlowSet", "cflow.template_flowset_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Template FlowSet", HFILL}
|
|
},
|
|
{&hf_cflow_flowset_length,
|
|
{"FlowSet Length", "cflow.flowset_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"FlowSet length", HFILL}
|
|
},
|
|
{&hf_cflow_template_id,
|
|
{"Template Id", "cflow.template_id",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Template Id", HFILL}
|
|
},
|
|
{&hf_cflow_template_field_count,
|
|
{"Field Count", "cflow.template_field_count",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Template field count", HFILL}
|
|
},
|
|
{&hf_cflow_template_field_type,
|
|
{"Type", "cflow.template_field_type",
|
|
FT_UINT16, BASE_DEC, VALS(v9_template_types), 0x0,
|
|
"Template field type", HFILL}
|
|
},
|
|
{&hf_cflow_template_field_length,
|
|
{"Length", "cflow.template_field_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Template field length", HFILL}
|
|
},
|
|
|
|
/* options */
|
|
{&hf_cflow_option_scope_length,
|
|
{"Option Scope Length", "cflow.option_scope_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Option scope length", HFILL}
|
|
},
|
|
{&hf_cflow_option_length,
|
|
{"Option Length", "cflow.option_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Option length", HFILL}
|
|
},
|
|
{&hf_cflow_template_scope_field_type,
|
|
{"Scope Type", "cflow.scope_field_type",
|
|
FT_UINT16, BASE_DEC, VALS(v9_scope_field_types), 0x0,
|
|
"Scope field type", HFILL}
|
|
},
|
|
{&hf_cflow_template_scope_field_length,
|
|
{"Scope Field Length", "cflow.scope_field_length",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Scope field length", HFILL}
|
|
},
|
|
{&hf_cflow_sampling_interval,
|
|
{"Sampling interval", "cflow.sampling_interval",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Sampling interval", HFILL}
|
|
},
|
|
{&hf_cflow_sampling_algorithm,
|
|
{"Sampling algorithm", "cflow.sampling_algorithm",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Sampling algorithm", HFILL}
|
|
},
|
|
{&hf_cflow_flow_active_timeout,
|
|
{"Flow active timeout", "cflow.flow_active_timeout",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow active timeout", HFILL}
|
|
},
|
|
{&hf_cflow_flow_inactive_timeout,
|
|
{"Flow inactive timeout", "cflow.flow_inactive_timeout",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow inactive timeout", HFILL}
|
|
},
|
|
|
|
/*
|
|
* begin pdu content storage
|
|
*/
|
|
{&hf_cflow_srcaddr,
|
|
{"SrcAddr", "cflow.srcaddr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Flow Source Address", HFILL}
|
|
},
|
|
{&hf_cflow_srcaddr_v6,
|
|
{"SrcAddr", "cflow.srcaddrv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Flow Source Address", HFILL}
|
|
},
|
|
{&hf_cflow_srcnet,
|
|
{"SrcNet", "cflow.srcnet",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Flow Source Network", HFILL}
|
|
},
|
|
{&hf_cflow_dstaddr,
|
|
{"DstAddr", "cflow.dstaddr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Flow Destination Address", HFILL}
|
|
},
|
|
{&hf_cflow_dstaddr_v6,
|
|
{"DstAddr", "cflow.dstaddrv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Flow Destination Address", HFILL}
|
|
},
|
|
{&hf_cflow_dstnet,
|
|
{"DstNet", "cflow.dstaddr",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Flow Destination Network", HFILL}
|
|
},
|
|
{&hf_cflow_nexthop,
|
|
{"NextHop", "cflow.nexthop",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Router nexthop", HFILL}
|
|
},
|
|
{&hf_cflow_nexthop_v6,
|
|
{"NextHop", "cflow.nexthopv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"Router nexthop", HFILL}
|
|
},
|
|
{&hf_cflow_bgpnexthop,
|
|
{"BGPNextHop", "cflow.bgpnexthop",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"BGP Router Nexthop", HFILL}
|
|
},
|
|
{&hf_cflow_bgpnexthop_v6,
|
|
{"BGPNextHop", "cflow.bgpnexthopv6",
|
|
FT_IPv6, BASE_NONE, NULL, 0x0,
|
|
"BGP Router Nexthop", HFILL}
|
|
},
|
|
{&hf_cflow_inputint,
|
|
{"InputInt", "cflow.inputint",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow Input Interface", HFILL}
|
|
},
|
|
{&hf_cflow_outputint,
|
|
{"OutputInt", "cflow.outputint",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow Output Interface", HFILL}
|
|
},
|
|
{&hf_cflow_flows,
|
|
{"Flows", "cflow.flows",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Flows Aggregated in PDU", HFILL}
|
|
},
|
|
{&hf_cflow_packets,
|
|
{"Packets", "cflow.packets",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Count of packets", HFILL}
|
|
},
|
|
{&hf_cflow_packets64,
|
|
{"Packets", "cflow.packets64",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
"Count of packets", HFILL}
|
|
},
|
|
{&hf_cflow_packetsout,
|
|
{"PacketsOut", "cflow.packetsout",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
"Count of packets going out", HFILL}
|
|
},
|
|
{&hf_cflow_octets,
|
|
{"Octets", "cflow.octets",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Count of bytes", HFILL}
|
|
},
|
|
{&hf_cflow_octets64,
|
|
{"Octets", "cflow.octets64",
|
|
FT_UINT64, BASE_DEC, NULL, 0x0,
|
|
"Count of bytes", HFILL}
|
|
},
|
|
{&hf_cflow_timestart,
|
|
{"StartTime", "cflow.timestart",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
|
|
"Uptime at start of flow", HFILL}
|
|
},
|
|
{&hf_cflow_timeend,
|
|
{"EndTime", "cflow.timeend",
|
|
FT_RELATIVE_TIME, BASE_NONE, NULL, 0x0,
|
|
"Uptime at end of flow", HFILL}
|
|
},
|
|
{&hf_cflow_srcport,
|
|
{"SrcPort", "cflow.srcport",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow Source Port", HFILL}
|
|
},
|
|
{&hf_cflow_dstport,
|
|
{"DstPort", "cflow.dstport",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Flow Destination Port", HFILL}
|
|
},
|
|
{&hf_cflow_prot,
|
|
{"Protocol", "cflow.protocol",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"IP Protocol", HFILL}
|
|
},
|
|
{&hf_cflow_tos,
|
|
{"IP ToS", "cflow.tos",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"IP Type of Service", HFILL}
|
|
},
|
|
{&hf_cflow_flags,
|
|
{"Export Flags", "cflow.flags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"CFlow Flags", HFILL}
|
|
},
|
|
{&hf_cflow_tcpflags,
|
|
{"TCP Flags", "cflow.tcpflags",
|
|
FT_UINT8, BASE_HEX, NULL, 0x0,
|
|
"TCP Flags", HFILL}
|
|
},
|
|
{&hf_cflow_srcas,
|
|
{"SrcAS", "cflow.srcas",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Source AS", HFILL}
|
|
},
|
|
{&hf_cflow_dstas,
|
|
{"DstAS", "cflow.dstas",
|
|
FT_UINT16, BASE_DEC, NULL, 0x0,
|
|
"Destination AS", HFILL}
|
|
},
|
|
{&hf_cflow_srcmask,
|
|
{"SrcMask", "cflow.srcmask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Source Prefix Mask", HFILL}
|
|
},
|
|
{&hf_cflow_dstmask,
|
|
{"DstMask", "cflow.dstmask",
|
|
FT_UINT8, BASE_DEC, NULL, 0x0,
|
|
"Destination Prefix Mask", HFILL}
|
|
},
|
|
{&hf_cflow_routersc,
|
|
{"Router Shortcut", "cflow.routersc",
|
|
FT_IPv4, BASE_NONE, NULL, 0x0,
|
|
"Router shortcut by switch", HFILL}
|
|
},
|
|
{&hf_cflow_mulpackets,
|
|
{"MulticastPackets", "cflow.mulpackets",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Count of multicast packets", HFILL}
|
|
},
|
|
{&hf_cflow_muloctets,
|
|
{"MulticastOctets", "cflow.muloctets",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Count of multicast octets", HFILL}
|
|
},
|
|
{&hf_cflow_octets_exp,
|
|
{"OctetsExp", "cflow.octetsexp",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Octets exported", HFILL}
|
|
},
|
|
{&hf_cflow_packets_exp,
|
|
{"PacketsExp", "cflow.packetsexp",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Packets exported", HFILL}
|
|
},
|
|
{&hf_cflow_flows_exp,
|
|
{"FlowsExp", "cflow.flowsexp",
|
|
FT_UINT32, BASE_DEC, NULL, 0x0,
|
|
"Flows exported", HFILL}
|
|
}
|
|
/*
|
|
* end pdu content storage
|
|
*/
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_netflow,
|
|
&ett_unixtime,
|
|
&ett_flow,
|
|
&ett_template,
|
|
&ett_dataflowset
|
|
};
|
|
|
|
module_t *netflow_module;
|
|
|
|
proto_netflow = proto_register_protocol("Cisco NetFlow", "CFLOW",
|
|
"cflow");
|
|
|
|
proto_register_field_array(proto_netflow, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
|
|
/* Register our configuration options for NetFlow */
|
|
netflow_module = prefs_register_protocol(proto_netflow,
|
|
proto_reg_handoff_netflow);
|
|
|
|
prefs_register_uint_preference(netflow_module, "udp.port",
|
|
"NetFlow UDP Port", "Set the port for NetFlow messages",
|
|
10, &global_netflow_udp_port);
|
|
|
|
register_init_routine(&netflow_reinit);
|
|
}
|
|
|
|
|
|
/*
|
|
* protocol/port association
|
|
*/
|
|
void
|
|
proto_reg_handoff_netflow(void)
|
|
{
|
|
static int netflow_prefs_initialized = FALSE;
|
|
static dissector_handle_t netflow_handle;
|
|
|
|
if (!netflow_prefs_initialized) {
|
|
netflow_handle = create_dissector_handle(dissect_netflow,
|
|
proto_netflow);
|
|
netflow_prefs_initialized = TRUE;
|
|
} else {
|
|
dissector_delete("udp.port", netflow_udp_port, netflow_handle);
|
|
}
|
|
|
|
/* Set out port number for future use */
|
|
netflow_udp_port = global_netflow_udp_port;
|
|
|
|
dissector_add("udp.port", netflow_udp_port, netflow_handle);
|
|
}
|