xref: /illumos-gate/usr/src/cmd/oamuser/lib/vgroup.c (revision 2a8bcb4e)
17c478bd9Sstevel@tonic-gate /*
27c478bd9Sstevel@tonic-gate  * CDDL HEADER START
37c478bd9Sstevel@tonic-gate  *
47c478bd9Sstevel@tonic-gate  * The contents of this file are subject to the terms of the
5*a776e906Snakanon  * Common Development and Distribution License (the "License").
6*a776e906Snakanon  * You may not use this file except in compliance with the License.
77c478bd9Sstevel@tonic-gate  *
87c478bd9Sstevel@tonic-gate  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
97c478bd9Sstevel@tonic-gate  * or http://www.opensolaris.org/os/licensing.
107c478bd9Sstevel@tonic-gate  * See the License for the specific language governing permissions
117c478bd9Sstevel@tonic-gate  * and limitations under the License.
127c478bd9Sstevel@tonic-gate  *
137c478bd9Sstevel@tonic-gate  * When distributing Covered Code, include this CDDL HEADER in each
147c478bd9Sstevel@tonic-gate  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
157c478bd9Sstevel@tonic-gate  * If applicable, add the following below this CDDL HEADER, with the
167c478bd9Sstevel@tonic-gate  * fields enclosed by brackets "[]" replaced with your own identifying
177c478bd9Sstevel@tonic-gate  * information: Portions Copyright [yyyy] [name of copyright owner]
187c478bd9Sstevel@tonic-gate  *
197c478bd9Sstevel@tonic-gate  * CDDL HEADER END
207c478bd9Sstevel@tonic-gate  */
21*a776e906Snakanon 
227c478bd9Sstevel@tonic-gate /*
23*a776e906Snakanon  * Copyright 2008 Sun Microsystems, Inc.  All rights reserved.
24*a776e906Snakanon  * Use is subject to license terms.
257c478bd9Sstevel@tonic-gate  */
267c478bd9Sstevel@tonic-gate 
277c478bd9Sstevel@tonic-gate /*	Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T	*/
287c478bd9Sstevel@tonic-gate /*	  All Rights Reserved  	*/
297c478bd9Sstevel@tonic-gate 
307c478bd9Sstevel@tonic-gate /*LINTLIBRARY*/
317c478bd9Sstevel@tonic-gate 
327c478bd9Sstevel@tonic-gate #include	<sys/types.h>
337c478bd9Sstevel@tonic-gate #include	<stdio.h>
347c478bd9Sstevel@tonic-gate #include	<stdlib.h>
357c478bd9Sstevel@tonic-gate #include	<ctype.h>
36*a776e906Snakanon #include	<errno.h>
37*a776e906Snakanon #include	<limits.h>
38*a776e906Snakanon #include	<sys/param.h>
397c478bd9Sstevel@tonic-gate #include	<users.h>
407c478bd9Sstevel@tonic-gate #include	<userdefs.h>
417c478bd9Sstevel@tonic-gate 
42*a776e906Snakanon extern int valid_gid(gid_t, struct group **);
43*a776e906Snakanon 
44*a776e906Snakanon static int isalldigit(char *);
457c478bd9Sstevel@tonic-gate 
467c478bd9Sstevel@tonic-gate /*
477c478bd9Sstevel@tonic-gate  *	validate a group name or number and return the appropriate
487c478bd9Sstevel@tonic-gate  *	group structure for it.
497c478bd9Sstevel@tonic-gate  */
507c478bd9Sstevel@tonic-gate int
valid_group(char * group,struct group ** gptr,int * warning)517c478bd9Sstevel@tonic-gate valid_group(char *group, struct group **gptr, int *warning)
527c478bd9Sstevel@tonic-gate {
53*a776e906Snakanon 	int r, warn;
54*a776e906Snakanon 	long l;
557c478bd9Sstevel@tonic-gate 	char *ptr;
56*a776e906Snakanon 	struct group *grp;
577c478bd9Sstevel@tonic-gate 
587c478bd9Sstevel@tonic-gate 	*warning = 0;
59*a776e906Snakanon 
60*a776e906Snakanon 	if (!isalldigit(group))
61*a776e906Snakanon 		return (valid_gname(group, gptr, warning));
62*a776e906Snakanon 
63*a776e906Snakanon 	/*
64*a776e906Snakanon 	 * There are only digits in group name.
65*a776e906Snakanon 	 * strtol() doesn't return negative number here.
66*a776e906Snakanon 	 */
67*a776e906Snakanon 	errno = 0;
68*a776e906Snakanon 	l = strtol(group, &ptr, 10);
69*a776e906Snakanon 	if ((l == LONG_MAX && errno == ERANGE) || l > MAXUID) {
70*a776e906Snakanon 		r = TOOBIG;
71*a776e906Snakanon 	} else {
72*a776e906Snakanon 		if ((r = valid_gid((gid_t)l, &grp)) == NOTUNIQUE) {
73*a776e906Snakanon 			/* It is a valid existing gid */
74*a776e906Snakanon 			if (gptr != NULL)
75*a776e906Snakanon 				*gptr = grp;
76*a776e906Snakanon 			return (NOTUNIQUE);
77*a776e906Snakanon 		}
787c478bd9Sstevel@tonic-gate 	}
79*a776e906Snakanon 	/*
80*a776e906Snakanon 	 * It's all digit, but not a valid gid nor an existing gid.
81*a776e906Snakanon 	 * There might be an existing group name of all digits.
82*a776e906Snakanon 	 */
83*a776e906Snakanon 	if (valid_gname(group, &grp, &warn) == NOTUNIQUE) {
84*a776e906Snakanon 		/* It does exist */
85*a776e906Snakanon 		*warning = warn;
86*a776e906Snakanon 		if (gptr != NULL)
87*a776e906Snakanon 			*gptr = grp;
88*a776e906Snakanon 		return (NOTUNIQUE);
897c478bd9Sstevel@tonic-gate 	}
90*a776e906Snakanon 	/*
91*a776e906Snakanon 	 * It isn't either existing gid or group name. We return the
92*a776e906Snakanon 	 * error code from valid_gid() assuming that given string
93*a776e906Snakanon 	 * represents an integer GID.
94*a776e906Snakanon 	 */
95*a776e906Snakanon 	return (r);
96*a776e906Snakanon }
977c478bd9Sstevel@tonic-gate 
98*a776e906Snakanon static int
isalldigit(char * str)99*a776e906Snakanon isalldigit(char *str)
100*a776e906Snakanon {
101*a776e906Snakanon 	while (*str != '\0') {
102*a776e906Snakanon 		if (!isdigit((unsigned char)*str))
103*a776e906Snakanon 			return (0);
104*a776e906Snakanon 		str++;
105*a776e906Snakanon 	}
106*a776e906Snakanon 	return (1);
1077c478bd9Sstevel@tonic-gate }
108