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 } 122