usr/src/cmd/oamuser/lib/vgname.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 (c) 1997, by Sun Microsystems, Inc.
  24  * All rights reserved.
  25  */
  26
  27 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  28 /*        All Rights Reserved   */
  29
  30
  31 #pragma ident   "%Z%%M% %I%     %E% SMI"
  32
  33 /*LINTLIBRARY*/
  34
  35 #include        <sys/types.h>
  36 #include        <stdio.h>
  37 #include        <ctype.h>
  38 #include        <userdefs.h>
  39 #include        <users.h>
  40
  41 /*
  42  * validate string given as group name.
  43  */
  44 int
  45 valid_gname(char *group, struct group **gptr, int *warning)
  46 {
  47         struct group *t_gptr;
  48         char *ptr = group;
  49         char c;
  50         int len = 0;
  51         int badchar = 0;
  52
  53         *warning = 0;
  54         if (!group || !*group)
  55                 return (INVALID);
  56
  57         for (c = *ptr; c != NULL; ptr++, c = *ptr) {
  58                 len++;
  59                 if (!isprint(c) || (c == ':') || (c == '\n'))
  60                         return (INVALID);
  61                 if (!(islower(c) || isdigit(c)))
  62                         badchar++;
  63         }
  64
  65         /*
  66          * XXX constraints causes some operational/compatibility problem.
  67          * This has to be revisited in the future as ARC/standards issue.
  68          */
  69         if (len > MAXGLEN - 1)
  70                 *warning = *warning | WARN_NAME_TOO_LONG;
  71         if (badchar != 0)
  72                 *warning = *warning | WARN_BAD_GROUP_NAME;
  73
  74         if ((t_gptr = getgrnam(group)) != NULL) {
  75                 if (gptr) *gptr = t_gptr;
  76                 return (NOTUNIQUE);
  77         }
  78         return (UNIQUE);
  79 }