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 } 111