-
Notifications
You must be signed in to change notification settings - Fork 189
/
util.c
200 lines (170 loc) · 4.76 KB
/
util.c
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
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
/**************************************************************************
**
** sngrep - SIP Messages flow viewer
**
** Copyright (C) 2013-2018 Ivan Alonso (Kaian)
** Copyright (C) 2013-2018 Irontec SL. All rights reserved.
**
** 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 3 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, see <http://www.gnu.org/licenses/>.
**
****************************************************************************/
/**
* @file util.c
* @author Ivan Alonso [aka Kaian] <kaian@irontec.com>
*
* @brief Source of functions defined in util.h
*
*/
#include "config.h"
#include <time.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <signal.h>
#include "util.h"
#if __STDC_VERSION__ >= 201112L && __STDC_NO_ATOMICS__ != 1
// modern C with atomics
#include <stdatomic.h>
typedef atomic_int signal_flag_type;
#else
// no atomics available
typedef volatile sig_atomic_t signal_flag_type;
#endif
static signal_flag_type sigterm_received = 0;
static void sigterm_handler(int signum)
{
sigterm_received = 1;
}
void setup_sigterm_handler(void)
{
// set up SIGTERM handler (also used for SIGINT and SIGQUIT)
// the handler will be served by any of the running threads
// so we just set a flag and check it in one of the two available
// main loops of the program (main for --no-interface and
// ui_wait_for_input() for curses)
if (signal(SIGTERM, sigterm_handler) == SIG_ERR)
exit(EXIT_FAILURE);
if (signal(SIGINT, sigterm_handler) == SIG_ERR)
exit(EXIT_FAILURE);
if (signal(SIGQUIT, sigterm_handler) == SIG_ERR)
exit(EXIT_FAILURE);
// Handle SIGHUP signal, received when our controlling terminal is closed.
// This prevents running on dead ssh connections.
if (signal(SIGHUP, sigterm_handler) == SIG_ERR)
exit(EXIT_FAILURE);
}
bool was_sigterm_received(void)
{
return (sigterm_received == 1);
}
void *
sng_malloc(size_t size)
{
void *data;
// Check memory allocation size
if (size <= 0 || size > MALLOC_MAX_SIZE)
return NULL;
// Allocate memory
if (!(data = malloc(size)))
return NULL;
// Initialize allocated memory
memset(data, 0, size);
return data;
}
void
sng_free(void *ptr)
{
if (ptr)
free(ptr);
}
char *
sng_basename(const char *name)
{
const char *base = name;
while (*name)
{
if (*name++ == '/') {
base = name;
}
}
return (char *) base;
}
int
timeval_is_older(struct timeval t1, struct timeval t2)
{
long long int t1sec, t2sec;
t1sec = t1.tv_sec;
t1sec = t1sec * 1000000;
t2sec = t2.tv_sec;
t2sec = t2sec * 1000000;
return ((t2sec + t2.tv_usec) - (t1sec + t1.tv_usec) <= 0);
}
const char *
timeval_to_date(struct timeval time, char *out)
{
time_t t = (time_t) time.tv_sec;
struct tm *timestamp = localtime(&t);
strftime(out, 11, "%Y/%m/%d", timestamp);
return out;
}
const char *
timeval_to_time(struct timeval time, char *out)
{
time_t t = (time_t) time.tv_sec;
struct tm *timestamp = localtime(&t);
strftime(out, 19, "%H:%M:%S", timestamp);
sprintf(out + 8, ".%06d", (int) time.tv_usec);
return out;
}
const char *
timeval_to_duration(struct timeval start, struct timeval end, char *out)
{
int seconds;
char duration[20];
if (!out || !start.tv_sec || !end.tv_sec)
return NULL;
// Differnce in secons
seconds = end.tv_sec - start.tv_sec;
// Set Human readable format
sprintf(duration, "%d:%02d", seconds / 60, seconds % 60);
sprintf(out, "%7s", duration);
return out;
}
const char *
timeval_to_delta(struct timeval start, struct timeval end, char *out)
{
long diff;
int nsec, nusec;
int sign;
if (!out || !start.tv_sec || !end.tv_sec)
return NULL;
diff = end.tv_sec * 1000000 + end.tv_usec;
diff -= start.tv_sec * 1000000 + start.tv_usec;
nsec = diff / 1000000;
nusec = labs(diff - (nsec * 1000000));
sign = (diff >= 0) ? '+' : '-';
sprintf(out, "%c%d.%06d", sign, abs(nsec), nusec);
return out;
}
char *
strtrim(char *str)
{
int i;
if (!str || !strlen(str))
return str;
for (i = strlen(str) - 1; i >= 0 && isspace(str[i]); i--)
str[i] = 0;
return str;
}