]>
Commit | Line | Data |
---|---|---|
242652fe | 1 | /* $OpenBSD: getgrouplist.c,v 1.12 2005/08/08 08:05:34 espie Exp $ */ |
63b68889 | 2 | /* |
3 | * Copyright (c) 1991, 1993 | |
4 | * The Regents of the University of California. All rights reserved. | |
5 | * | |
6 | * Redistribution and use in source and binary forms, with or without | |
7 | * modification, are permitted provided that the following conditions | |
8 | * are met: | |
9 | * 1. Redistributions of source code must retain the above copyright | |
10 | * notice, this list of conditions and the following disclaimer. | |
11 | * 2. Redistributions in binary form must reproduce the above copyright | |
12 | * notice, this list of conditions and the following disclaimer in the | |
13 | * documentation and/or other materials provided with the distribution. | |
3e67f7df | 14 | * 3. Neither the name of the University nor the names of its contributors |
63b68889 | 15 | * may be used to endorse or promote products derived from this software |
16 | * without specific prior written permission. | |
17 | * | |
18 | * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND | |
19 | * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE | |
20 | * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE | |
21 | * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE | |
22 | * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL | |
23 | * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS | |
24 | * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) | |
25 | * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT | |
26 | * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY | |
27 | * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF | |
28 | * SUCH DAMAGE. | |
29 | */ | |
30 | ||
f6d4fb87 | 31 | /* OPENBSD ORIGINAL: lib/libc/gen/getgrouplist.c */ |
32 | ||
63b68889 | 33 | #include "includes.h" |
34 | ||
35 | #ifndef HAVE_GETGROUPLIST | |
36 | ||
63b68889 | 37 | /* |
38 | * get credential | |
39 | */ | |
40 | #include <sys/types.h> | |
41 | #include <string.h> | |
510a42ce | 42 | #include <unistd.h> |
63b68889 | 43 | #include <grp.h> |
44 | ||
45 | int | |
242652fe | 46 | getgrouplist(const char *uname, gid_t agroup, gid_t *groups, int *grpcnt) |
63b68889 | 47 | { |
242652fe | 48 | struct group *grp; |
49 | int i, ngroups; | |
63b68889 | 50 | int ret, maxgroups; |
51 | int bail; | |
52 | ||
53 | ret = 0; | |
54 | ngroups = 0; | |
55 | maxgroups = *grpcnt; | |
56 | ||
57 | /* | |
58 | * install primary group | |
59 | */ | |
60 | if (ngroups >= maxgroups) { | |
61 | *grpcnt = ngroups; | |
62 | return (-1); | |
63 | } | |
64 | groups[ngroups++] = agroup; | |
65 | ||
66 | /* | |
67 | * Scan the group file to find additional groups. | |
68 | */ | |
69 | setgrent(); | |
70 | while ((grp = getgrent())) { | |
71 | if (grp->gr_gid == agroup) | |
72 | continue; | |
73 | for (bail = 0, i = 0; bail == 0 && i < ngroups; i++) | |
74 | if (groups[i] == grp->gr_gid) | |
75 | bail = 1; | |
76 | if (bail) | |
77 | continue; | |
78 | for (i = 0; grp->gr_mem[i]; i++) { | |
79 | if (!strcmp(grp->gr_mem[i], uname)) { | |
80 | if (ngroups >= maxgroups) { | |
81 | ret = -1; | |
82 | goto out; | |
83 | } | |
84 | groups[ngroups++] = grp->gr_gid; | |
85 | break; | |
86 | } | |
87 | } | |
88 | } | |
89 | out: | |
90 | endgrent(); | |
91 | *grpcnt = ngroups; | |
92 | return (ret); | |
93 | } | |
94 | ||
95 | #endif /* HAVE_GETGROUPLIST */ |