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#include <stdio.h>
28#include <grp.h>
29#include <stdlib.h>
30#include <errno.h>
31#include "getent.h"
32
33
34static int
35putgrent(const struct group *grp, FILE *fp)
36{
37	char **mem;
38	int rc = 0;
39
40	if (grp == NULL) {
41		return (1);
42	}
43
44	if (fprintf(fp, "%s:%s:%u:",
45	    grp->gr_name != NULL ? grp->gr_name : "",
46	    grp->gr_passwd != NULL ? grp->gr_passwd : "",
47	    grp->gr_gid) == EOF)
48		rc = 1;
49
50	mem = grp ->gr_mem;
51
52	if (mem != NULL) {
53		if (*mem != NULL)
54			if (fputs(*mem++, fp) == EOF)
55				rc = 1;
56
57		while (*mem != NULL)
58			if (fprintf(fp, ",%s", *mem++) == EOF)
59				rc = 1;
60	}
61	if (putc('\n', fp) == EOF)
62		rc = 1;
63	return (rc);
64}
65
66int
67dogetgr(const char **list)
68{
69	struct group *grp;
70	int rc = EXC_SUCCESS;
71	char *ptr;
72	gid_t gid;
73
74	if (list == NULL || *list == NULL) {
75		while ((grp = getgrent()) != NULL)
76			(void) putgrent(grp, stdout);
77	} else {
78		for (; *list != NULL; list++) {
79			errno = 0;
80
81			/*
82			 * Here we assume that the argument passed is
83			 * a gid, if it can be completely transformed
84			 * to a long integer. So we check for gid in
85			 * the database and if we fail then we check
86			 * for the group name.
87			 * If the argument passed is not numeric, then
88			 * we take it as the group name and proceed.
89			 */
90			gid = strtoul(*list, &ptr, 10);
91			if (!(*ptr == '\0' && errno == 0) ||
92			    ((grp = getgrgid(gid)) == NULL)) {
93				grp = getgrnam(*list);
94			}
95			if (grp == NULL)
96				rc = EXC_NAME_NOT_FOUND;
97			else
98				(void) putgrent(grp, stdout);
99		}
100	}
101
102	return (rc);
103}
104