Postfix3.3.1
safe_getenv.c
[詳解]
1 /*++
2 /* NAME
3 /* safe_getenv 3
4 /* SUMMARY
5 /* guarded getenv()
6 /* SYNOPSIS
7 /* #include <safe.h>
8 /*
9 /* char *safe_getenv(const name)
10 /* char *name;
11 /* DESCRIPTION
12 /* The \fBsafe_getenv\fR() routine reads the named variable from the
13 /* environment, provided that the unsafe() routine agrees.
14 /* SEE ALSO
15 /* unsafe(3), detect non-user privileges
16 /* LICENSE
17 /* .ad
18 /* .fi
19 /* The Secure Mailer license must be distributed with this software.
20 /* AUTHOR(S)
21 /* Wietse Venema
22 /* IBM T.J. Watson Research
23 /* P.O. Box 704
24 /* Yorktown Heights, NY 10598, USA
25 /*--*/
26 
27 /* System library. */
28 
29 #include <sys_defs.h>
30 #include <stdlib.h>
31 
32 /* Utility library. */
33 
34 #include "safe.h"
35 
36 /* safe_getenv - read environment variable with guard */
37 
38 char *safe_getenv(const char *name)
39 {
40  return (unsafe() == 0 ? getenv(name) : 0);
41 }
int unsafe(void)
Definition: unsafe.c:59
char * safe_getenv(const char *name)
Definition: safe_getenv.c:38