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/*
* CDDL HEADER START
*
* The contents of this file are subject to the terms of the
* Common Development and Distribution License (the "License").
* You may not use this file except in compliance with the License.
*
* You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
* or http://www.opensolaris.org/os/licensing.
* See the License for the specific language governing permissions
* and limitations under the License.
*
* When distributing Covered Code, include this CDDL HEADER in each
* file and include the License file at usr/src/OPENSOLARIS.LICENSE.
* If applicable, add the following below this CDDL HEADER, with the
* fields enclosed by brackets "[]" replaced with your own identifying
* information: Portions Copyright [yyyy] [name of copyright owner]
*
* CDDL HEADER END
*/
/*
* Copyright 2008 Sun Microsystems, Inc. All rights reserved.
* Use is subject to license terms.
*/
/* Copyright (c) 1984, 1986, 1987, 1988, 1989 AT&T */
/* All Rights Reserved */
/*LINTLIBRARY*/
#include <sys/types.h>
#include <stdio.h>
#include <stdlib.h>
#include <ctype.h>
#include <errno.h>
#include <limits.h>
#include <sys/param.h>
#include <users.h>
#include <userdefs.h>
extern int valid_gid(gid_t, struct group **);
static int isalldigit(char *);
/*
* validate a group name or number and return the appropriate
* group structure for it.
*/
int
valid_group(char *group, struct group **gptr, int *warning)
{
int r, warn;
long l;
char *ptr;
struct group *grp;
*warning = 0;
if (!isalldigit(group))
return (valid_gname(group, gptr, warning));
/*
* There are only digits in group name.
* strtol() doesn't return negative number here.
*/
errno = 0;
l = strtol(group, &ptr, 10);
if ((l == LONG_MAX && errno == ERANGE) || l > MAXUID) {
r = TOOBIG;
} else {
if ((r = valid_gid((gid_t)l, &grp)) == NOTUNIQUE) {
/* It is a valid existing gid */
if (gptr != NULL)
*gptr = grp;
return (NOTUNIQUE);
}
}
/*
* It's all digit, but not a valid gid nor an existing gid.
* There might be an existing group name of all digits.
*/
if (valid_gname(group, &grp, &warn) == NOTUNIQUE) {
/* It does exist */
*warning = warn;
if (gptr != NULL)
*gptr = grp;
return (NOTUNIQUE);
}
/*
* It isn't either existing gid or group name. We return the
* error code from valid_gid() assuming that given string
* represents an integer GID.
*/
return (r);
}
static int
isalldigit(char *str)
{
while (*str != '\0') {
if (!isdigit((unsigned char)*str))
return (0);
str++;
}
return (1);
}
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