1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
|
/* 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:
*/
|
