usr/src/lib/libbc/libc/gen/common/grpauth.c

   1 /*
   2  * CDDL HEADER START
   3  *
   4  * The contents of this file are subject to the terms of the
   5  * Common Development and Distribution License, Version 1.0 only
   6  * (the "License").  You may not use this file except in compliance
   7  * with the License.
   8  *
   9  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
  10  * or http://www.opensolaris.org/os/licensing.
  11  * See the License for the specific language governing permissions
  12  * and limitations under the License.
  13  *
  14  * When distributing Covered Code, include this CDDL HEADER in each
  15  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  16  * If applicable, add the following below this CDDL HEADER, with the
  17  * fields enclosed by brackets "[]" replaced with your own identifying
  18  * information: Portions Copyright [yyyy] [name of copyright owner]
  19  *
  20  * CDDL HEADER END
  21  */
  22 /*
  23  * Copyright 1992 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"
  28
  29 #include <stdio.h>
  30 #include <signal.h>
  31 #include <grp.h>
  32 #include <sys/time.h>
  33 #include <errno.h>
  34
  35 /*
  36  * Version to go in the BCP compatibility library in SVr4 version of
  37  * SunOS. This does not bother talking to rpc.pwdauthd or looking for the
  38  * password.adjunct file on the system since they do not exist anymore.
  39  * They have been effectively replaced by a more robust aging security provided
  40  * by the combination of /etc/shadow file, shadow support in the NIS+
  41  * passwd table and the use of secure RPC in NIS+.
  42  */
  43
  44 int
  45 grpauth(char *name, char *password)
  46 {
  47
  48         /*
  49          * this routine authenticates a password for the named user.
  50          * Assumes the adjunct file does not exist.
  51          * and therefore checks the group "source" using the standard
  52          * getgrnam(3C) routine that uses /etc/nsswitch.conf(4).
  53          */
  54         struct group    gr;
  55         struct group    *grp;
  56
  57         if ((grp = getgrnam(name)) == NULL)
  58                 /* group is not in main password system */
  59                 return (-1);
  60         gr = *grp;
  61         if (gr.gr_passwd[0] == '#' && gr.gr_passwd[1] == '$') {
  62                 /* this means that /etc/group has problems */
  63                 fprintf(stderr, "grpauth: bad group entry for %s\n",
  64                         gr.gr_name);
  65                 return (-1);
  66         }
  67         if (strcmp(crypt(password, gr.gr_passwd), gr.gr_passwd) == 0)
  68                 return (0);
  69         else
  70                 return (-1);
  71 }