forked from osmocom/wireshark
118 lines
3.0 KiB
C
118 lines
3.0 KiB
C
/* packet-pulse.c
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* Routines for pulse dissection
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* Copyright 2013, Masatake YAMATO <yamato@redhat.com>
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* Copyright 2013, Red Hat, Inc.
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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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/* About pulse, see
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http://sourceware.org/piranha/ */
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# include "config.h"
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#include <epan/packet.h>
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#define PORT_PULSE 539 /* Not IANA registered */
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void proto_register_pulse(void);
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void proto_reg_handoff_pulse(void);
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static int proto_pulse = -1;
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static int hf_pulse_magic = -1;
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static gint ett_pulse = -1;
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/* piranha/pulse.c */
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#define PULSE_HEARTBEAT_RUNNING_MAGIC 0xbdaddbda
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#define PULSE_HEARTBEAT_STOPPED_MAGIC 0xadbddabd
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static const value_string pulse_magic_type[] = {
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{ PULSE_HEARTBEAT_RUNNING_MAGIC, "running" },
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{ PULSE_HEARTBEAT_STOPPED_MAGIC, "stopped" },
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{ 0, NULL }
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};
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static int
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dissect_pulse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
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{
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proto_item *item;
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proto_tree *tree;
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guint32 magic;
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const char* magic_str;
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guint endian;
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if (tvb_captured_length(tvb) < 4)
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return 0;
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/* Try to read MAGIC in both endians */
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endian = ENC_LITTLE_ENDIAN;
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magic = tvb_get_letohl(tvb, 0);
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magic_str = try_val_to_str(magic, pulse_magic_type);
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if (magic_str == NULL) {
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magic = tvb_get_ntohl(tvb, 0);
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magic_str = try_val_to_str(magic, pulse_magic_type);
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if (magic_str == NULL) {
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return 0;
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}
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endian = ENC_BIG_ENDIAN;
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}
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col_set_str(pinfo->cinfo, COL_PROTOCOL, "PULSE");
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col_set_str(pinfo->cinfo, COL_INFO, magic_str);
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if (parent_tree) {
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item = proto_tree_add_item(parent_tree, proto_pulse, tvb, 0,
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-1, endian);
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tree = proto_item_add_subtree(item, ett_pulse);
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proto_tree_add_item(tree, hf_pulse_magic, tvb, 0, 4, endian);
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}
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return 4;
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}
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void
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proto_register_pulse(void)
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{
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static hf_register_info hf[] = {
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{ &hf_pulse_magic,
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{ "Magic", "pulse.magic",
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FT_UINT32, BASE_HEX, VALS(pulse_magic_type), 0x0,
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NULL, HFILL }},
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};
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static gint *ett[] = {
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&ett_pulse,
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};
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proto_pulse = proto_register_protocol("PULSE protocol for Linux Virtual Server redundancy", "PULSE", "pulse");
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proto_register_field_array(proto_pulse, 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_pulse(void)
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{
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dissector_handle_t pulse_handle;
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pulse_handle = create_dissector_handle(dissect_pulse, proto_pulse);
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dissector_add_uint_with_preference("udp.port", PORT_PULSE, pulse_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: 4
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* tab-width: 8
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* indent-tabs-mode: nil
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* End:
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*
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* vi: set shiftwidth=4 tabstop=8 expandtab:
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* :indentSize=4:tabSize=8:noTabs=true:
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*/
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