[openssh.git] / openbsd-compat / getgrouplist.c

/*
 * Copyright (c) 1991, 1993
 *	The Regents of the University of California.  All rights reserved.
 *
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions
 * are met:
 * 1. Redistributions of source code must retain the above copyright
 *    notice, this list of conditions and the following disclaimer.
 * 2. Redistributions in binary form must reproduce the above copyright
 *    notice, this list of conditions and the following disclaimer in the
 *    documentation and/or other materials provided with the distribution.
 * 3. Neither the name of the University nor the names of its contributors
 *    may be used to endorse or promote products derived from this software
 *    without specific prior written permission.
 *
 * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
 * ARE DISCLAIMED.  IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
 * SUCH DAMAGE.
 */

#include "includes.h"

#ifndef HAVE_GETGROUPLIST

#if defined(LIBC_SCCS) && !defined(lint)
static char rcsid[] = "$OpenBSD: getgrouplist.c,v 1.8 2003/06/02 20:18:34 millert Exp $";
#endif /* LIBC_SCCS and not lint */

/*
 * get credential
 */
#include <sys/types.h>
#include <string.h>
#include <grp.h>

int
getgrouplist(uname, agroup, groups, grpcnt)
	const char *uname;
	gid_t agroup;
	register gid_t *groups;
	int *grpcnt;
{
	register struct group *grp;
	register int i, ngroups;
	int ret, maxgroups;
	int bail;

	ret = 0;
	ngroups = 0;
	maxgroups = *grpcnt;

	/*
	 * install primary group
	 */
	if (ngroups >= maxgroups) {
		*grpcnt = ngroups;
		return (-1);
	}
	groups[ngroups++] = agroup;

	/*
	 * Scan the group file to find additional groups.
	 */
	setgrent();
	while ((grp = getgrent())) {
		if (grp->gr_gid == agroup)
			continue;
		for (bail = 0, i = 0; bail == 0 && i < ngroups; i++)
			if (groups[i] == grp->gr_gid)
				bail = 1;
		if (bail)
			continue;
		for (i = 0; grp->gr_mem[i]; i++) {
			if (!strcmp(grp->gr_mem[i], uname)) {
				if (ngroups >= maxgroups) {
					ret = -1;
					goto out;
				}
				groups[ngroups++] = grp->gr_gid;
				break;
			}
		}
	}
out:
	endgrent();
	*grpcnt = ngroups;
	return (ret);
}

#endif /* HAVE_GETGROUPLIST */
Commit	Line	Data
63b68889	1	/*
	2	* Copyright (c) 1991, 1993
	3	* The Regents of the University of California. All rights reserved.
	4	*
	5	* Redistribution and use in source and binary forms, with or without
	6	* modification, are permitted provided that the following conditions
	7	* are met:
	8	* 1. Redistributions of source code must retain the above copyright
	9	* notice, this list of conditions and the following disclaimer.
	10	* 2. Redistributions in binary form must reproduce the above copyright
	11	* notice, this list of conditions and the following disclaimer in the
	12	* documentation and/or other materials provided with the distribution.
3e67f7df	13	* 3. Neither the name of the University nor the names of its contributors
63b68889	14	* may be used to endorse or promote products derived from this software
	15	* without specific prior written permission.
	16	*
	17	* THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
	18	* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
	19	* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	20	* ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
	21	* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
	22	* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
	23	* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
	24	* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
	25	* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
	26	* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
	27	* SUCH DAMAGE.
	28	*/
	29
	30	#include "includes.h"
	31
	32	#ifndef HAVE_GETGROUPLIST
	33
	34	#if defined(LIBC_SCCS) && !defined(lint)
3e67f7df	35	static char rcsid[] = "$OpenBSD: getgrouplist.c,v 1.8 2003/06/02 20:18:34 millert Exp $";
63b68889	36	#endif /* LIBC_SCCS and not lint */
	37
	38	/*
	39	* get credential
	40	*/
	41	#include <sys/types.h>
	42	#include <string.h>
	43	#include <grp.h>
	44
	45	int
	46	getgrouplist(uname, agroup, groups, grpcnt)
	47	const char *uname;
	48	gid_t agroup;
	49	register gid_t *groups;
	50	int *grpcnt;
	51	{
	52	register struct group *grp;
	53	register int i, ngroups;
	54	int ret, maxgroups;
	55	int bail;
	56
	57	ret = 0;
	58	ngroups = 0;
	59	maxgroups = *grpcnt;
	60
	61	/*
	62	* install primary group
	63	*/
	64	if (ngroups >= maxgroups) {
	65	*grpcnt = ngroups;
	66	return (-1);
	67	}
	68	groups[ngroups++] = agroup;
	69
	70	/*
	71	* Scan the group file to find additional groups.
	72	*/
	73	setgrent();
	74	while ((grp = getgrent())) {
	75	if (grp->gr_gid == agroup)
	76	continue;
	77	for (bail = 0, i = 0; bail == 0 && i < ngroups; i++)
	78	if (groups[i] == grp->gr_gid)
	79	bail = 1;
	80	if (bail)
	81	continue;
	82	for (i = 0; grp->gr_mem[i]; i++) {
	83	if (!strcmp(grp->gr_mem[i], uname)) {
	84	if (ngroups >= maxgroups) {
	85	ret = -1;
	86	goto out;
	87	}
	88	groups[ngroups++] = grp->gr_gid;
	89	break;
	90	}
	91	}
	92	}
	93	out:
	94	endgrent();
	95	*grpcnt = ngroups;
	96	return (ret);
	97	}
	98
	99	#endif /* HAVE_GETGROUPLIST */