forked from osmocom/wireshark
![Guy Harris](/assets/img/avatar_default.png)
From a look at the libosmocom code, time stamps in GSMTAP_TYPE_OSMOCORE_LOG messages appear to be UN*X struct timevals with a 4-byte tv_sec, not anything NTP-like with the fraction-of-a-second part in units of 1/2^32s of a second. Add ENC_TIME_TIMEVAL to handle time stamps like that, and use it rather than ENC_TIME_NTP_BASE_ZERO. Change-Id: Ia1511527ee292fb7725b2a64c0af16d23ff10a6d Reviewed-on: https://code.wireshark.org/review/20710 Reviewed-by: Guy Harris <guy@alum.mit.edu>
151 lines
5.2 KiB
C
151 lines
5.2 KiB
C
/* packet-gsmtap-log.c
|
|
* Routines for GSMTAP logging packets
|
|
*
|
|
* (C) 2016 by Harald Welte <laforge@gnumonks.org>
|
|
*
|
|
* 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.
|
|
*/
|
|
|
|
#include "config.h"
|
|
|
|
#include <epan/packet.h>
|
|
#include "packet-gsmtap.h"
|
|
|
|
void proto_register_gsmtap_log(void);
|
|
void proto_reg_handoff_gsmtap_log(void);
|
|
|
|
static int proto_gsmtap_log = -1;
|
|
|
|
static int hf_log_ident = -1;
|
|
static int hf_log_subsys = -1;
|
|
static int hf_log_file_name = -1;
|
|
static int hf_log_file_line = -1;
|
|
static int hf_log_ts = -1;
|
|
static int hf_log_pid = -1;
|
|
static int hf_log_level = -1;
|
|
static int hf_log_string = -1;
|
|
|
|
static int ett_gsmtap_log = -1;
|
|
|
|
/* from libosmocore include/osmocom/core/logging.h */
|
|
static const value_string gsmtap_log_levels[] = {
|
|
{ 1, "DEBUG" },
|
|
{ 3, "INFO" },
|
|
{ 5, "NOTICE" },
|
|
{ 7, "ERROR" },
|
|
{ 8, "FATAL" },
|
|
{ 0, NULL }
|
|
};
|
|
|
|
/* dissect a GSMTAP header and hand payload off to respective dissector */
|
|
static int
|
|
dissect_gsmtap_log(tvbuff_t *tvb, packet_info *pinfo, proto_tree *tree, void * data _U_)
|
|
{
|
|
proto_item *ti;
|
|
proto_tree *log_tree;
|
|
gint offset = 0;
|
|
gint log_str_len;
|
|
guint log_pid, log_level, log_src_line;
|
|
const char *log_str;
|
|
const guint8 *log_ident, *log_subsys, *log_src_fname;
|
|
|
|
ti = proto_tree_add_item(tree, proto_gsmtap_log, tvb, 0, -1, ENC_NA);
|
|
log_tree = proto_item_add_subtree(ti, ett_gsmtap_log);
|
|
|
|
proto_tree_add_item(log_tree, hf_log_ts, tvb, offset, 8, ENC_TIME_TIMEVAL|ENC_BIG_ENDIAN);
|
|
offset += 8;
|
|
proto_tree_add_item_ret_string(log_tree, hf_log_ident, tvb, offset, 16, ENC_NA, wmem_packet_scope(), &log_ident);
|
|
offset += 16;
|
|
proto_tree_add_item_ret_uint(log_tree, hf_log_pid, tvb, offset, 4, ENC_BIG_ENDIAN, &log_pid);
|
|
offset += 4;
|
|
proto_tree_add_item_ret_uint(log_tree, hf_log_level, tvb, offset++, 1, ENC_NA, &log_level);
|
|
offset += 3; /* pad octets */
|
|
proto_tree_add_item_ret_string(log_tree, hf_log_subsys, tvb, offset, 16, ENC_NA, wmem_packet_scope(), &log_subsys);
|
|
offset += 16;
|
|
proto_tree_add_item_ret_string(log_tree, hf_log_file_name, tvb, offset, 32, ENC_NA, wmem_packet_scope(), &log_src_fname);
|
|
offset += 32;
|
|
proto_tree_add_item_ret_uint(log_tree, hf_log_file_line, tvb, offset, 4, ENC_BIG_ENDIAN, &log_src_line);
|
|
offset += 4;
|
|
|
|
/* actual log message */
|
|
log_str_len = tvb_captured_length_remaining(tvb, offset);
|
|
proto_tree_add_item(log_tree, hf_log_string, tvb, offset, log_str_len, ENC_ASCII|ENC_NA);
|
|
|
|
log_str = tvb_format_stringzpad_wsp(wmem_packet_scope(), tvb, offset, log_str_len);
|
|
col_append_str(pinfo->cinfo, COL_INFO, log_str);
|
|
|
|
proto_item_append_text(ti, " %s(%u): %s/%d: %s:%u %s",
|
|
log_ident, log_pid, log_subsys, log_level,
|
|
log_src_fname, log_src_line, log_str);
|
|
return tvb_captured_length(tvb);
|
|
}
|
|
|
|
void
|
|
proto_register_gsmtap_log(void)
|
|
{
|
|
static hf_register_info hf[] = {
|
|
{ &hf_log_ident, { "Application", "gsmtap_log.ident",
|
|
FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_subsys, { "Subsystem", "gsmtap_log.subsys",
|
|
FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_file_name, { "Source File Name", "gsmtap_log.src_file.name",
|
|
FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_file_line, { "Source File Line Number", "gsmtap_log.src_file.line_nr",
|
|
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_ts, { "Timestamp", "gsmtap_log.timestamp",
|
|
FT_ABSOLUTE_TIME, ABSOLUTE_TIME_UTC, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_pid, { "Process ID", "gsmtap_log.pid",
|
|
FT_UINT32, BASE_DEC, NULL, 0, NULL, HFILL } },
|
|
{ &hf_log_level, { "Log Level", "gsmtap_log.level",
|
|
FT_UINT8, BASE_DEC, VALS(gsmtap_log_levels), 0, NULL, HFILL } },
|
|
{ &hf_log_string, { "String", "gsmtap_log.string",
|
|
FT_STRING, BASE_NONE, NULL, 0, NULL, HFILL } },
|
|
};
|
|
|
|
static gint *ett[] = {
|
|
&ett_gsmtap_log,
|
|
};
|
|
|
|
proto_gsmtap_log = proto_register_protocol("GSMTAP libosmocore logging", "GSMTAP-LOG", "gsmtap_log");
|
|
proto_register_field_array(proto_gsmtap_log, hf, array_length(hf));
|
|
proto_register_subtree_array(ett, array_length(ett));
|
|
}
|
|
|
|
void
|
|
proto_reg_handoff_gsmtap_log(void)
|
|
{
|
|
dissector_handle_t gsmtap_log_handle;
|
|
|
|
gsmtap_log_handle = create_dissector_handle(dissect_gsmtap_log, proto_gsmtap_log);
|
|
dissector_add_uint("gsmtap.type", GSMTAP_TYPE_OSMOCORE_LOG, gsmtap_log_handle);
|
|
}
|
|
|
|
/*
|
|
* Editor modelines - http://www.wireshark.org/tools/modelines.html
|
|
*
|
|
* Local variables:
|
|
* c-basic-offset: 8
|
|
* tab-width: 8
|
|
* indent-tabs-mode: t
|
|
* End:
|
|
*
|
|
* vi: set shiftwidth=8 tabstop=8 noexpandtab:
|
|
* :indentSize=8:tabSize=8:noTabs=false:
|
|
*/
|