usr/src/cmd/oamuser/user/val_lgrp.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  * Copyright 2009 Sun Microsystems, Inc.  All rights reserved.
  23  * Use is subject to license terms.
  24  */
  25
  26 /*      Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
  27 /*        All Rights Reserved   */
  28
  29 /*
  30  * Copyright (c) 2013 RackTop Systems.
  31  */
  32
  33
  34 #include        <sys/types.h>
  35 #include        <stdio.h>
  36 #include        <stdlib.h>
  37 #include        <sys/param.h>
  38 #include        <unistd.h>
  39 #include        <users.h>
  40 #include        <userdefs.h>
  41 #include        "messages.h"
  42
  43 extern void exit();
  44 extern char *strtok();
  45
  46 static gid_t *grplist;
  47 static int ngroups_max = 0;
  48
  49 /* Validate a list of groups */
  50 int     **
  51 valid_lgroup(char *list, gid_t gid)
  52 {
  53         int n_invalid = 0, i = 0, j;
  54         char *ptr;
  55         struct group *g_ptr;
  56         int warning;
  57         int dup_prim = 0; /* we don't duplicate our primary as a supplemental */
  58
  59         if( !list || !*list )
  60                 return( (int **) NULL );
  61
  62         if (ngroups_max == 0) {
  63                 ngroups_max = sysconf(_SC_NGROUPS_MAX);
  64                 grplist = malloc((ngroups_max + 1) * sizeof (gid_t));
  65         }
  66
  67         while ((ptr = strtok((i || n_invalid || dup_prim)? NULL: list, ","))) {
  68
  69                 switch (valid_group(ptr, &g_ptr, &warning)) {
  70                 case INVALID:
  71                         errmsg( M_INVALID, ptr, "group id" );
  72                         n_invalid++;
  73                         break;
  74                 case TOOBIG:
  75                         errmsg( M_TOOBIG, "gid", ptr );
  76                         n_invalid++;
  77                         break;
  78                 case UNIQUE:
  79                         errmsg( M_GRP_NOTUSED, ptr );
  80                         n_invalid++;
  81                         break;
  82                 case NOTUNIQUE:
  83                         /* ignore duplicated primary */
  84                         if (g_ptr->gr_gid == gid) {
  85                                 if (!dup_prim)
  86                                         dup_prim++;
  87                                 continue;
  88                         }
  89
  90                         if( !i )
  91                                 grplist[ i++ ] = g_ptr->gr_gid;
  92                         else {
  93                                 /* Keep out duplicates */
  94                                 for( j = 0; j < i; j++ )
  95                                         if( g_ptr->gr_gid == grplist[j] )
  96                                                 break;
  97
  98                                 if( j == i )
  99                                         /* Not a duplicate */
 100                                         grplist[i++] = g_ptr->gr_gid;
 101                         }
 102                         break;
 103
 104                 }
 105                 if (warning)
 106                         warningmsg(warning, ptr);
 107
 108                 if( i >= ngroups_max ) {
 109                         errmsg( M_MAXGROUPS, ngroups_max );
 110                         break;
 111                 }
 112         }
 113
 114         /* Terminate the list */
 115         grplist[ i ] = -1;
 116
 117         if( n_invalid )
 118                 exit( EX_BADARG );
 119
 120         return( (int **)grplist );
 121 }