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
|
/*
* environment.cc: Part of GNU CSSC.
*
*
* Copyright (C) 2001 Free Software Foundation, Inc.
*
* 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., 59 Temple Place - Suite 330, Boston, MA 02111, USA.
*
*
* Code for handling environment variables which affect CSSC. See the
* sections "Environment" and "Interoperability" in the CSSC manual.
*
* $Id: environment.cc,v 1.3 2002/04/03 14:16:33 james_youngman Exp $
*/
#include "cssc.h"
#ifdef HAVE_LIMITS_H
#include <limits.h>
#endif
bool binary_file_creation_allowed (void)
{
static const char * const bin_var = "CSSC_BINARY_SUPPORT";
static const char * const enabled = "enabled";
static const char * const disabled = "disabled";
const char *p = getenv(bin_var);
if (p)
{
if (0 == strcmp(p, enabled))
{
return true;
}
else if (0 == strcmp(p, disabled))
{
return false;
}
else
{
/* This function should be called at program start-up,
* so there should be few cleanup implications of a direct
* call to exit() here.
*/
fprintf(stderr,
"Error: The %s environment variable, if set, must be set "
"to either '%s' or '%s'.\n",
bin_var,
enabled,
disabled);
exit(1);
}
}
else
{
#ifdef CONFIG_DISABLE_BINARY_SUPPORT
return false;
#else
return true;
#endif
}
}
long max_sfile_line_len(void)
{
static const char * const max_var = "CSSC_MAX_LINE_LENGTH";
const char *p;
long len;
p = getenv(max_var);
if (p)
{
char *endptr;
errno = 0;
len = strtol(p, &endptr, 10);
if ( (endptr == p)
|| ( (LONG_MIN == len) || (LONG_MAX == len) ) && (0 != errno)
|| len < 0)
{
fprintf(stderr,
"Error: Environment variable '%s' is set to '%s', but "
"should be either a positive decimal integer or unset.\n",
max_var,
p);
exit(1);
}
else
{
return len;
}
}
else
{
return CONFIG_MAX_BODY_LINE_LENGTH;
}
}
void check_env_vars(void)
{
(void) binary_file_creation_allowed();
(void) max_sfile_line_len();
}
|
