usr/src/cmd/oamuser/lib/vgroup.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 (the "License").
   6  * You may not use this file except in compliance with the License.
   7  *
   8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
   9  * or http://www.opensolaris.org/os/licensing.
  10  * See the License for the specific language governing permissions
  11  * and limitations under the License.
  12  *
  13  * When distributing Covered Code, include this CDDL HEADER in each
  14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
  15  * If applicable, add the following below this CDDL HEADER, with the
  16  * fields enclosed by brackets "[]" replaced with your own identifying
  17  * information: Portions Copyright [yyyy] [name of copyright owner]
  18  *
  19  * CDDL HEADER END
  20  */
  21
  22 /*
  23  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
  24  * Use is subject to license terms.
  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"        /* SVr4.0 1.2 */
  32
  33 /*LINTLIBRARY*/
  34
  35 #include        <sys/types.h>
  36 #include        <stdio.h>
  37 #include        <stdlib.h>
  38 #include        <ctype.h>
  39 #include        <errno.h>
  40 #include        <limits.h>
  41 #include        <sys/param.h>
  42 #include        <users.h>
  43 #include        <userdefs.h>
  44
  45 extern int valid_gid(gid_t, struct group **);
  46
  47 static int isalldigit(char *);
  48
  49 /*
  50  *      validate a group name or number and return the appropriate
  51  *      group structure for it.
  52  */
  53 int
  54 valid_group(char *group, struct group **gptr, int *warning)
  55 {
  56         int r, warn;
  57         long l;
  58         char *ptr;
  59         struct group *grp;
  60
  61         *warning = 0;
  62
  63         if (!isalldigit(group))
  64                 return (valid_gname(group, gptr, warning));
  65
  66         /*
  67          * There are only digits in group name.
  68          * strtol() doesn't return negative number here.
  69          */
  70         errno = 0;
  71         l = strtol(group, &ptr, 10);
  72         if ((l == LONG_MAX && errno == ERANGE) || l > MAXUID) {
  73                 r = TOOBIG;
  74         } else {
  75                 if ((r = valid_gid((gid_t)l, &grp)) == NOTUNIQUE) {
  76                         /* It is a valid existing gid */
  77                         if (gptr != NULL)
  78                                 *gptr = grp;
  79                         return (NOTUNIQUE);
  80                 }
  81         }
  82         /*
  83          * It's all digit, but not a valid gid nor an existing gid.
  84          * There might be an existing group name of all digits.
  85          */
  86         if (valid_gname(group, &grp, &warn) == NOTUNIQUE) {
  87                 /* It does exist */
  88                 *warning = warn;
  89                 if (gptr != NULL)
  90                         *gptr = grp;
  91                 return (NOTUNIQUE);
  92         }
  93         /*
  94          * It isn't either existing gid or group name. We return the
  95          * error code from valid_gid() assuming that given string
  96          * represents an integer GID.
  97          */
  98         return (r);
  99 }
 100
 101 static int
 102 isalldigit(char *str)
 103 {
 104         while (*str != '\0') {
 105                 if (!isdigit((unsigned char)*str))
 106                         return (0);
 107                 str++;
 108         }
 109         return (1);
 110 }