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
|
/*
* The IKE Scanner (ike-scan) is Copyright (C) 2003-2009 Roy Hills,
* NTA Monitor Ltd.
*
* This file is part of ike-scan.
*
* ike-scan 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.
*
* ike-scan 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 ike-scan. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, as a special exception, the copyright holders give
* permission to link the code of portions of this program with the
* OpenSSL library, and distribute linked combinations including the two.
*
* You must obey the GNU General Public License in all respects
* for all of the code used other than OpenSSL. If you modify
* file(s) with this exception, you may extend this exception to your
* version of the file(s), but you are not obligated to do so. If you
* do not wish to do so, delete this exception statement from your
* version.
*
* If this license is unacceptable to you, I may be willing to negotiate
* alternative licenses (contact ike-scan@nta-monitor.com).
*
* You are encouraged to submit comments, improvements or suggestions
* at the github repository https://github.com/royhills/ike-scan
*
* error.c -- error routines for IKE Scanner (ike-scan)
*
* Author: Roy Hills
* Date: 1 December 2001
*/
#include "ike-scan.h"
int daemon_proc; /* Non-zero if process is a daemon */
/*
* Function to handle fatal system call errors.
*/
void
err_sys(const char *fmt,...) {
va_list ap;
va_start(ap, fmt);
err_print(1, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
/*
* Function to handle non-fatal system call errors.
*/
void
warn_sys(const char *fmt,...) {
va_list ap;
va_start(ap, fmt);
err_print(1, fmt, ap);
va_end(ap);
}
/*
* Function to handle fatal errors not from system calls.
*/
void
err_msg(const char *fmt,...) {
va_list ap;
va_start(ap, fmt);
err_print(0, fmt, ap);
va_end(ap);
exit(EXIT_FAILURE);
}
/*
* Function to handle non-fatal errors not from system calls.
*/
void
warn_msg(const char *fmt,...) {
va_list ap;
va_start(ap, fmt);
err_print(0, fmt, ap);
va_end(ap);
}
/*
* General error printing function used by all the above
* functions.
*/
void
err_print (int errnoflag, const char *fmt, va_list ap) {
int errno_save;
size_t n;
char buf[MAXLINE];
errno_save=errno;
vsnprintf(buf, MAXLINE, fmt, ap);
n=strlen(buf);
if (errnoflag)
snprintf(buf+n, MAXLINE-n, ": %s", strerror(errno_save));
strlcat(buf, "\n", sizeof(buf));
fflush(stdout); /* In case stdout and stderr are the same */
fputs(buf, stderr);
fflush(stderr);
}
|
