forked from osmocom/wireshark
![Evan Huus](/assets/img/avatar_default.png)
Change-Id: Ie137e6f4e20fe26b1a4d9510e267896219c1c631 Reviewed-on: https://code.wireshark.org/review/9075 Reviewed-by: Evan Huus <eapache@gmail.com>
161 lines
4.5 KiB
C
161 lines
4.5 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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* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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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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#include <epan/prefs.h>
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#define PORT_PULSE 539
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static guint pulse_port = PORT_PULSE;
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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 little_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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little_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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little_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, little_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, little_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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module_t *pulse_module;
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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",
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"PULSE",
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"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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pulse_module = prefs_register_protocol(proto_pulse, proto_reg_handoff_pulse);
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prefs_register_uint_preference(pulse_module, "udp.port",
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"UDP Port",
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"Set the UDP port for pulse",
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10,
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&pulse_port);
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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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static gboolean initialized = FALSE;
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static int port = 0;
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static dissector_handle_t pulse_handle;
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if (initialized)
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{
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dissector_delete_uint("udp.port", port, pulse_handle);
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}
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else
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{
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pulse_handle = new_create_dissector_handle(dissect_pulse,
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proto_pulse);
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initialized = TRUE;
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}
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port = pulse_port;
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dissector_add_uint("udp.port", port, pulse_handle);
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}
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/*
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* Editor modelines - http://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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