[gssapi-openssh.git] / openssh / 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 1.9 2003/06/25 21:16:47 deraadt Exp $";
#endif /* LIBC_SCCS and not lint */

/*
 * get credential
 */
#include <sys/types.h>
#include <string.h>
#include <unistd.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
3c0ef626	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.
0fff78ff	13	* 3. Neither the name of the University nor the names of its contributors
3c0ef626	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)
0fff78ff	35	static char rcsid[] = "$OpenBSD: getgrouplist.c,v 1.9 2003/06/25 21:16:47 deraadt Exp $";
3c0ef626	36	#endif /* LIBC_SCCS and not lint */
	37
	38	/*
	39	* get credential
	40	*/
	41	#include <sys/types.h>
	42	#include <string.h>
0fff78ff	43	#include <unistd.h>
3c0ef626	44	#include <grp.h>
	45
	46	int
	47	getgrouplist(uname, agroup, groups, grpcnt)
	48	const char *uname;
	49	gid_t agroup;
	50	register gid_t *groups;
	51	int *grpcnt;
	52	{
	53	register struct group *grp;
	54	register int i, ngroups;
	55	int ret, maxgroups;
	56	int bail;
	57
	58	ret = 0;
	59	ngroups = 0;
	60	maxgroups = *grpcnt;
	61
	62	/*
	63	* install primary group
	64	*/
	65	if (ngroups >= maxgroups) {
	66	*grpcnt = ngroups;
	67	return (-1);
	68	}
	69	groups[ngroups++] = agroup;
	70
	71	/*
	72	* Scan the group file to find additional groups.
	73	*/
	74	setgrent();
	75	while ((grp = getgrent())) {
	76	if (grp->gr_gid == agroup)
	77	continue;
	78	for (bail = 0, i = 0; bail == 0 && i < ngroups; i++)
	79	if (groups[i] == grp->gr_gid)
	80	bail = 1;
	81	if (bail)
	82	continue;
	83	for (i = 0; grp->gr_mem[i]; i++) {
	84	if (!strcmp(grp->gr_mem[i], uname)) {
	85	if (ngroups >= maxgroups) {
	86	ret = -1;
	87	goto out;
	88	}
	89	groups[ngroups++] = grp->gr_gid;
	90	break;
	91	}
	92	}
	93	}
	94	out:
	95	endgrent();
	96	*grpcnt = ngroups;
	97	return (ret);
	98	}
	99
	100	#endif /* HAVE_GETGROUPLIST */