usr/src/lib/libbc/libc/gen/common/crypt.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 1990 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  25  */
  26
  27 #pragma ident   "%Z%%M% %I%     %E% SMI"  /* from S5R2 1.3 */
  28
  29 /*LINTLIBRARY*/
  30 /* The real crypt is now _crypt.  This version performs automatic
  31  * authentication via pwauth for special password entries, or simply
  32  * calls _crypt for the usual case.
  33  */
  34
  35 char *
  36 crypt(pw, salt)
  37 char    *pw, *salt;
  38 {
  39         static char *iobuf;
  40         extern char *_crypt();
  41         extern char *malloc();
  42
  43         if (iobuf == 0) {
  44                 iobuf = malloc((unsigned)16);
  45                 if (iobuf == 0)
  46                         return (0);
  47         }
  48         /* handle the case where the password is really in passwd.adjunct.
  49          * In this case, the salt will start with "##".  We should call
  50          * passauth to determine if pw is valid.  If so, we should return
  51          * the salt, and otherwise return NULL.  If salt does not start with
  52          * "##", crypt will act in the normal fashion.
  53          */
  54         if (salt[0] == '#' && salt[1] == '#') {
  55                 if (pwdauth(salt+2, pw) == 0)
  56                         strcpy(iobuf, salt);
  57                 else
  58                         iobuf[0] = '\0';
  59                 return(iobuf);
  60         }
  61         /* handle the case where the password is really in group.adjunct.
  62          * In this case, the salt will start with "#$".  We should call
  63          * grpauth to determine if pw is valid.  If so, we should return
  64          * the salt, and otherwise return NULL.  If salt does not start with
  65          * "#$", crypt will act in the normal fashion.
  66          */
  67         if (salt[0] == '#' && salt[1] == '$') {
  68                 if (grpauth(salt+2, pw) == 0)
  69                         strcpy(iobuf, salt);
  70                 else
  71                         iobuf[0] = '\0';
  72                 return(iobuf);
  73         }
  74         return (_crypt(pw, salt));
  75 }