external/ibm-public/postfix/dist/src/util/safe_getenv.c

   1 /*      $NetBSD$        */
   2
   3 /*++
   4 /* NAME
   5 /*      safe_getenv 3
   6 /* SUMMARY
   7 /*      guarded getenv()
   8 /* SYNOPSIS
   9 /*      #include <safe.h>
  10 /*
  11 /*      char    *safe_getenv(const name)
  12 /*      char    *name;
  13 /* DESCRIPTION
  14 /*      The \fBsafe_getenv\fR() routine reads the named variable from the
  15 /*      environment, provided that the unsafe() routine agrees.
  16 /* SEE ALSO
  17 /*      unsafe(3), detect non-user privileges
  18 /* LICENSE
  19 /* .ad
  20 /* .fi
  21 /*      The Secure Mailer license must be distributed with this software.
  22 /* AUTHOR(S)
  23 /*      Wietse Venema
  24 /*      IBM T.J. Watson Research
  25 /*      P.O. Box 704
  26 /*      Yorktown Heights, NY 10598, USA
  27 /*--*/
  28
  29 /* System library. */
  30
  31 #include <sys_defs.h>
  32 #include <stdlib.h>
  33
  34 /* Utility library. */
  35
  36 #include "safe.h"
  37
  38 /* safe_getenv - read environment variable with guard */
  39
  40 char   *safe_getenv(const char *name)
  41 {
  42     return (unsafe() == 0 ? getenv(name) : 0);
  43 }