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/* packet-pulse.c
* Routines for pulse dissection
* Copyright 2013, Masatake YAMATO <yamato@redhat.com>
* Copyright 2013, Red Hat, Inc.
*
* Wireshark - Network traffic analyzer
* By Gerald Combs <gerald@wireshark.org>
* Copyright 1998 Gerald Combs
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version 2
* of the License, or (at your option) any later version.
*
* This program is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU General Public License
* along with this program; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*/
/* About pulse, see
http://sourceware.org/piranha/ */
# include "config.h"
#include <epan/packet.h>
#include <epan/prefs.h>
#define PORT_PULSE 539
static guint pulse_port = PORT_PULSE;
void proto_register_pulse(void);
void proto_reg_handoff_pulse(void);
static int proto_pulse = -1;
static int hf_pulse_magic = -1;
static gint ett_pulse = -1;
/* piranha/pulse.c */
#define PULSE_HEARTBEAT_RUNNING_MAGIC 0xbdaddbda
#define PULSE_HEARTBEAT_STOPPED_MAGIC 0xadbddabd
static const value_string pulse_magic_type[] = {
{ PULSE_HEARTBEAT_RUNNING_MAGIC, "running" },
{ PULSE_HEARTBEAT_STOPPED_MAGIC, "stopped" },
{ 0, NULL }
};
static int
dissect_pulse(tvbuff_t *tvb, packet_info *pinfo, proto_tree *parent_tree, void* data _U_)
{
proto_item *item;
proto_tree *tree;
guint32 magic;
const char* magic_str;
guint little_endian;
if (tvb_length(tvb) < 4)
return 0;
/* Try to read MAGIC in both endians */
little_endian = ENC_LITTLE_ENDIAN;
magic = tvb_get_letohl(tvb, 0);
magic_str = try_val_to_str(magic, pulse_magic_type);
if (magic_str == NULL) {
magic = tvb_get_ntohl(tvb, 0);
magic_str = try_val_to_str(magic, pulse_magic_type);
if (magic_str == NULL) {
return 0;
}
little_endian = ENC_BIG_ENDIAN;
}
col_set_str(pinfo->cinfo, COL_PROTOCOL, "PULSE");
col_set_str(pinfo->cinfo, COL_INFO, magic_str);
if (parent_tree) {
item = proto_tree_add_item(parent_tree, proto_pulse, tvb, 0,
-1, little_endian);
tree = proto_item_add_subtree(item, ett_pulse);
proto_tree_add_item(tree, hf_pulse_magic, tvb, 0, 4, little_endian);
}
return 4;
}
void
proto_register_pulse(void)
{
module_t *pulse_module;
static hf_register_info hf[] = {
{ &hf_pulse_magic,
{ "Magic", "pulse.magic",
FT_UINT32, BASE_HEX, VALS(pulse_magic_type), 0x0,
NULL, HFILL }},
};
static gint *ett[] = {
&ett_pulse,
};
proto_pulse = proto_register_protocol("PULSE protocol for Linux Virtual Server redundancy",
"PULSE",
"pulse");
proto_register_field_array(proto_pulse, hf, array_length(hf));
proto_register_subtree_array(ett, array_length(ett));
pulse_module = prefs_register_protocol(proto_pulse, proto_reg_handoff_pulse);
prefs_register_uint_preference(pulse_module, "udp.port",
"UDP Port",
"Set the UDP port for pulse",
10,
&pulse_port);
}
void
proto_reg_handoff_pulse(void)
{
static gboolean initialized = FALSE;
static int port = 0;
static dissector_handle_t pulse_handle;
if (initialized)
{
dissector_delete_uint("udp.port", port, pulse_handle);
}
else
{
pulse_handle = new_create_dissector_handle(dissect_pulse,
proto_pulse);
initialized = TRUE;
}
port = pulse_port;
dissector_add_uint("udp.port", port, pulse_handle);
}
/*
* Editor modelines - http://www.wireshark.org/tools/modelines.html
*
* Local variables:
* c-basic-offset: 4
* tab-width: 8
* indent-tabs-mode: nil
* End:
*
* vi: set shiftwidth=4 tabstop=8 expandtab:
* :indentSize=4:tabSize=8:noTabs=true:
*/
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