]>
Commit | Line | Data |
---|---|---|
cdd66111 | 1 | /* OPENBSD ORIGINAL: lib/libc/gen/getgrouplist.c */ |
2 | ||
3c0ef626 | 3 | /* |
4 | * Copyright (c) 1991, 1993 | |
5 | * The Regents of the University of California. All rights reserved. | |
6 | * | |
7 | * Redistribution and use in source and binary forms, with or without | |
8 | * modification, are permitted provided that the following conditions | |
9 | * are met: | |
10 | * 1. Redistributions of source code must retain the above copyright | |
11 | * notice, this list of conditions and the following disclaimer. | |
12 | * 2. Redistributions in binary form must reproduce the above copyright | |
13 | * notice, this list of conditions and the following disclaimer in the | |
14 | * documentation and/or other materials provided with the distribution. | |
0fff78ff | 15 | * 3. Neither the name of the University nor the names of its contributors |
3c0ef626 | 16 | * may be used to endorse or promote products derived from this software |
17 | * without specific prior written permission. | |
18 | * | |
19 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
20 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
21 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
22 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
23 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
24 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
25 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
26 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
27 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
28 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
29 | * SUCH DAMAGE. | |
30 | */ | |
31 | ||
32 | #include "includes.h" | |
33 | ||
34 | #ifndef HAVE_GETGROUPLIST | |
35 | ||
36 | #if defined(LIBC_SCCS) && !defined(lint) | |
0fff78ff | 37 | static char rcsid[] = "$OpenBSD: getgrouplist.c,v 1.9 2003/06/25 21:16:47 deraadt Exp $"; |
3c0ef626 | 38 | #endif /* LIBC_SCCS and not lint */ |
39 | ||
40 | /* | |
41 | * get credential | |
42 | */ | |
43 | #include <sys/types.h> | |
44 | #include <string.h> | |
0fff78ff | 45 | #include <unistd.h> |
3c0ef626 | 46 | #include <grp.h> |
47 | ||
48 | int | |
49 | getgrouplist(uname, agroup, groups, grpcnt) | |
50 | const char *uname; | |
51 | gid_t agroup; | |
52 | register gid_t *groups; | |
53 | int *grpcnt; | |
54 | { | |
55 | register struct group *grp; | |
56 | register int i, ngroups; | |
57 | int ret, maxgroups; | |
58 | int bail; | |
59 | ||
60 | ret = 0; | |
61 | ngroups = 0; | |
62 | maxgroups = *grpcnt; | |
63 | ||
64 | /* | |
65 | * install primary group | |
66 | */ | |
67 | if (ngroups >= maxgroups) { | |
68 | *grpcnt = ngroups; | |
69 | return (-1); | |
70 | } | |
71 | groups[ngroups++] = agroup; | |
72 | ||
73 | /* | |
74 | * Scan the group file to find additional groups. | |
75 | */ | |
76 | setgrent(); | |
77 | while ((grp = getgrent())) { | |
78 | if (grp->gr_gid == agroup) | |
79 | continue; | |
80 | for (bail = 0, i = 0; bail == 0 && i < ngroups; i++) | |
81 | if (groups[i] == grp->gr_gid) | |
82 | bail = 1; | |
83 | if (bail) | |
84 | continue; | |
85 | for (i = 0; grp->gr_mem[i]; i++) { | |
86 | if (!strcmp(grp->gr_mem[i], uname)) { | |
87 | if (ngroups >= maxgroups) { | |
88 | ret = -1; | |
89 | goto out; | |
90 | } | |
91 | groups[ngroups++] = grp->gr_gid; | |
92 | break; | |
93 | } | |
94 | } | |
95 | } | |
96 | out: | |
97 | endgrent(); | |
98 | *grpcnt = ngroups; | |
99 | return (ret); | |
100 | } | |
101 | ||
102 | #endif /* HAVE_GETGROUPLIST */ |