grupd.c revision 242349 
1/*-
2 * Copyright (C) 1996
3 *	David L. Nugent.  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.
13 *
14 * THIS SOFTWARE IS PROVIDED BY DAVID L. NUGENT AND CONTRIBUTORS ``AS IS'' AND
15 * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
16 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
17 * ARE DISCLAIMED.  IN NO EVENT SHALL DAVID L. NUGENT OR CONTRIBUTORS BE LIABLE
18 * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
19 * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
20 * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
21 * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
22 * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
23 * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
24 * SUCH DAMAGE.
25 */
26
27#ifndef lint
28static const char rcsid[] =
29  "$FreeBSD: head/usr.sbin/pw/grupd.c 242349 2012-10-30 08:00:53Z bapt $";
30#endif /* not lint */
31
32#include <grp.h>
33#include <libutil.h>
34#include <err.h>
35#include <stdio.h>
36#include <stdlib.h>
37#include <string.h>
38#include <unistd.h>
39#include <stdarg.h>
40#include <sys/types.h>
41#include <sys/stat.h>
42#include <sys/param.h>
43
44#include "pwupd.h"
45
46static char * grpath = _PATH_PWD;
47
48int
49setgrdir(const char * dir)
50{
51	if (dir == NULL)
52		return -1;
53	else {
54		char * d = malloc(strlen(dir)+1);
55		if (d == NULL)
56			return -1;
57		grpath = strcpy(d, dir);
58	}
59	return 0;
60}
61
62char *
63getgrpath(const char * file)
64{
65	static char pathbuf[MAXPATHLEN];
66
67	snprintf(pathbuf, sizeof pathbuf, "%s/%s", grpath, file);
68	return pathbuf;
69}
70
71static int
72gr_update(struct group * grp, char const * group)
73{
74	int pfd, tfd;
75	struct group *gr = NULL;
76	struct group *old_gr = NULL;
77
78	if (grp != NULL)
79		gr = gr_dup(grp);
80
81	if (group != NULL)
82		old_gr = GETGRNAM(group);
83
84	if (gr_init(grpath, NULL))
85		err(1, "gr_init()");
86
87	if ((pfd = gr_lock()) == -1) {
88		gr_fini();
89		err(1, "gr_lock()");
90	}
91	if ((tfd = gr_tmp(-1)) == -1) {
92		gr_fini();
93		err(1, "gr_tmp()");
94	}
95	if (gr_copy(pfd, tfd, gr, old_gr) == -1) {
96		gr_fini();
97		err(1, "gr_copy()");
98	}
99	if (gr_mkdb() == -1) {
100		gr_fini();
101		err(1, "gr_mkdb()");
102	}
103	free(gr);
104	gr_fini();
105	return 0;
106}
107
108
109int
110addgrent(struct group * grp)
111{
112	return gr_update(grp, NULL);
113}
114
115int
116chggrent(char const * login, struct group * grp)
117{
118	return gr_update(grp, login);
119}
120
121int
122delgrent(struct group * grp)
123{
124	char group[MAXLOGNAME];
125
126	strlcpy(group, grp->gr_name, MAXLOGNAME);
127
128	return gr_update(NULL, group);
129}
130