/
compat.c
142 lines (122 loc) · 2.65 KB
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
/*
* OpenConnect (SSL + DTLS) VPN client
*
* Copyright © 2008-2012 Intel Corporation.
*
* Authors: David Woodhouse <dwmw2@infradead.org>
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public License
* version 2.1, as published by the Free Software Foundation.
*
* 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
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to:
*
* Free Software Foundation, Inc.
* 51 Franklin Street, Fifth Floor,
* Boston, MA 02110-1301 USA
*/
#include "openconnect-internal.h"
#ifdef __sun__
#include <sys/time.h>
time_t openconnect__time(time_t *t)
{
time_t s = gethrtime() / 1000000000LL;
if (t)
*t = s;
return s;
}
#endif
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
#ifndef HAVE_ASPRINTF
#include <stdarg.h>
#include <errno.h>
static int oc_vasprintf(char **strp, const char *fmt, va_list ap)
{
va_list ap2;
char *res = NULL;
int len = 160, len2;
int ret = 0;
int errno_save = -ENOMEM;
res = malloc(160);
if (!res)
goto err;
/* Use a copy of 'ap', preserving it in case we need to retry into
a larger buffer. 160 characters should be sufficient for most
strings in openconnect. */
#ifdef HAVE_VA_COPY
va_copy(ap2, ap);
#elif defined (HAVE___VA_COPY)
__va_copy(ap2, ap);
#else
#error No va_copy()!
// You could try this.
ap2 = ap;
// Or this
*ap2 = *ap;
#endif
len = vsnprintf(res, 160, fmt, ap2);
va_end(ap2);
if (len < 0) {
printf_err:
errno_save = errno;
free(res);
res = NULL;
goto err;
}
if (len >=0 && len < 160)
goto out;
free(res);
res = malloc(len+1);
if (!res)
goto err;
len2 = vsnprintf(res, len+1, fmt, ap);
if (len2 < 0 || len2 > len)
goto printf_err;
ret = 0;
goto out;
err:
errno = errno_save;
ret = -1;
out:
*strp = res;
return ret;
}
int openconnect__asprintf(char **strp, const char *fmt, ...)
{
va_list ap;
int ret;
va_start(ap, fmt);
ret = oc_vasprintf(strp, fmt, ap);
va_end(ap);
return ret;
}
#endif
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
#ifndef HAVE_GETLINE
ssize_t openconnect__getline(char **lineptr, size_t *n, FILE *stream)
{
int len = 0;
if (!*lineptr) {
*n = 2;
*lineptr = malloc(*n);
if (!*lineptr)
return -1;
}
while (fgets((*lineptr) + len, (*n) - len, stream)) {
len += strlen((*lineptr) + len);
if ((*lineptr)[len-1] == '\n')
break;
*n *= 2;
*lineptr = realloc(*lineptr, *n);
if (!*lineptr)
return -1;
}
if (len)
return len;
return -1;
}
#endif