forked from osmocom/wireshark
123 lines
3.1 KiB
C
123 lines
3.1 KiB
C
/* packet-hbbak.c
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* Routines for ethertype 0x8988 Paloalto heartbeat backup traffic via mgmt
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*
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* Copyright 2020 Joerg Mayer (see AUTHORS file)
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*
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* Wireshark - Network traffic analyzer
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* By Gerald Combs <gerald@wireshark.org>
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* Copyright 1998 Gerald Combs
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*
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* SPDX-License-Identifier: GPL-2.0-or-later
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*/
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/* 2do:
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* - Find out the meaning of the 6 bytes header: timestamp?
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* - Handle trailer bytes correctly
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*/
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#include "config.h"
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#include <epan/packet.h>
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#include <epan/etypes.h>
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void proto_reg_handoff_hbbak(void);
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void proto_register_hbbak(void);
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#define PROTO_SHORT_NAME "PA-HB-Bak"
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#define PROTO_LONG_NAME "Palo Alto Heartbeat Backup"
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#define HBBAK_SIZE 8
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static int proto_hbbak = -1;
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static int hf_hbbak_unknown1 = -1;
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static int hf_hbbak_etype_outer = -1;
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static int hf_hbbak_trailer = -1;
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static gint ett_hbbak = -1;
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static dissector_handle_t ethertype_handle;
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static int
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dissect_hbbak(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void* data _U_)
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{
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proto_tree *ti, *hbbak_tree;
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int offset = 0;
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guint16 eth_type_outer;
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ethertype_data_t ethertype_data;
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col_set_str(pinfo->cinfo, COL_PROTOCOL, PROTO_SHORT_NAME);
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col_clear(pinfo->cinfo, COL_INFO);
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col_add_fstr(pinfo->cinfo, COL_INFO, PROTO_LONG_NAME);
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hbbak_tree = NULL;
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ti = proto_tree_add_item(tree, proto_hbbak, tvb, offset, HBBAK_SIZE, ENC_NA);
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hbbak_tree = proto_item_add_subtree(ti, ett_hbbak);
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proto_tree_add_item(hbbak_tree, hf_hbbak_unknown1, tvb, offset, 6, ENC_NA);
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offset += 6;
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eth_type_outer = tvb_get_ntohs(tvb, offset);
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proto_tree_add_uint(hbbak_tree, hf_hbbak_etype_outer, tvb,
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offset, 2, eth_type_outer);
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ethertype_data.etype = eth_type_outer;
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ethertype_data.payload_offset = HBBAK_SIZE;
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ethertype_data.fh_tree = hbbak_tree;
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ethertype_data.trailer_id = hf_hbbak_trailer;
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ethertype_data.fcs_len = 0;
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call_dissector_with_data(ethertype_handle, tvb, pinfo, tree, ðertype_data);
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return tvb_captured_length(tvb);
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}
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void
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proto_register_hbbak(void)
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{
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static hf_register_info hf[] = {
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{ &hf_hbbak_unknown1,
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{ "Unknown1", "hbbak.unknown1", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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{ &hf_hbbak_etype_outer,
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{ "Type", "hbbak.etype", FT_UINT16, BASE_HEX, VALS(etype_vals),
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0x0, NULL, HFILL }},
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{ &hf_hbbak_trailer,
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{ "Trailer", "hbbak.trailer", FT_BYTES, BASE_NONE, NULL,
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0x0, NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_hbbak,
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};
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proto_hbbak = proto_register_protocol(PROTO_LONG_NAME, PROTO_LONG_NAME, "hbbak");
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proto_register_field_array(proto_hbbak, hf, array_length(hf));
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proto_register_subtree_array(ett, array_length(ett));
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}
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void
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proto_reg_handoff_hbbak(void)
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{
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dissector_handle_t hbbak_handle;
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ethertype_handle = find_dissector_add_dependency("ethertype", proto_hbbak);
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hbbak_handle = create_dissector_handle(dissect_hbbak, proto_hbbak);
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dissector_add_uint("ethertype", ETHERTYPE_PA_HBBACKUP, hbbak_handle);
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}
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/*
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* Editor modelines - https://www.wireshark.org/tools/modelines.html
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*
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* Local variables:
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* c-basic-offset: 8
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* tab-width: 8
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* indent-tabs-mode: t
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* End:
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*
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* vi: set shiftwidth=8 tabstop=8 noexpandtab:
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* :indentSize=8:tabSize=8:noTabs=false:
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*/
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