lib/libutil/auth.c

   1 /*
   2  * Simple authentication database handling code.
   3  *
   4  * Copyright (c) 1998
   5  *      Jordan Hubbard.  All rights reserved.
   6  *
   7  * Redistribution and use in source and binary forms, with or without
   8  * modification, are permitted provided that the following conditions
   9  * are met:
  10  * 1. Redistributions of source code must retain the above copyright
  11  *    notice, this list of conditions and the following disclaimer,
  12  *    verbatim and that no modifications are made prior to this
  13  *    point in the file.
  14  * 2. Redistributions in binary form must reproduce the above copyright
  15  *    notice, this list of conditions and the following disclaimer in the
  16  *    documentation and/or other materials provided with the distribution.
  17  *
  18  * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
  19  * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
  20  * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  21  * ARE DISCLAIMED.  IN NO EVENT SHALL THE AUTHOR OR HIS PETS BE LIABLE
  22  * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
  23  * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
  24  * OR SERVICES; LOSS OF USE, DATA, LIFE OR PROFITS; OR BUSINESS INTERRUPTION)
  25  * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
  26  * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
  27  * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
  28  * SUCH DAMAGE.
  29  */
  30
  31 #include <sys/cdefs.h>
  32 __FBSDID("$FreeBSD$");
  33
  34 #include <sys/types.h>
  35 #include <fcntl.h>
  36 #include <libutil.h>
  37 #include <paths.h>
  38 #include <syslog.h>
  39 #include <unistd.h>
  40
  41 static properties P;
  42
  43 static int
  44 initauthconf(const char *path)
  45 {
  46     int fd;
  47
  48     if (!P) {
  49         if ((fd = open(path, O_RDONLY)) < 0) {
  50             syslog(LOG_ERR, "initauthconf: unable to open file: %s", path);
  51             return 1;
  52         }
  53         P = properties_read(fd);
  54         close(fd);
  55         if (!P) {
  56             syslog(LOG_ERR, "initauthconf: unable to parse file: %s", path);
  57             return 1;
  58         }
  59     }
  60     return 0;
  61 }
  62
  63 char *
  64 auth_getval(const char *name)
  65 {
  66     if (!P && initauthconf(_PATH_AUTHCONF))
  67         return NULL;
  68     else
  69         return property_find(P, name);
  70 }