1 /* Licensed to the Apache Software Foundation (ASF) under one or more
2 * contributor license agreements. See the NOTICE file distributed with
3 * this work for additional information regarding copyright ownership.
4 * The ASF licenses this file to You under the Apache License, Version 2.0
5 * (the "License"); you may not use this file except in compliance with
6 * the License. You may obtain a copy of the License at
7 *
8 * http://www.apache.org/licenses/LICENSE-2.0
9 *
10 * Unless required by applicable law or agreed to in writing, software
11 * distributed under the License is distributed on an "AS IS" BASIS,
12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13 * See the License for the specific language governing permissions and
14 * limitations under the License.
15 */
16
17 #include "apr_strings.h"
18 #include "apr_portable.h"
19 #include "apr_user.h"
20 #include "apr_private.h"
21 #ifdef HAVE_GRP_H
22 #include <grp.h>
23 #endif
24 #if APR_HAVE_SYS_TYPES_H
25 #include <sys/types.h>
26 #endif
27 #if APR_HAVE_UNISTD_H
28 #include <unistd.h> /* for _POSIX_THREAD_SAFE_FUNCTIONS */
29 #endif
30
31 #define GRBUF_SIZE 8192
32
apr_gid_name_get(char ** groupname,apr_gid_t groupid,apr_pool_t * p)33 APR_DECLARE(apr_status_t) apr_gid_name_get(char **groupname, apr_gid_t groupid,
34 apr_pool_t *p)
35 {
36 struct group *gr;
37
38 #if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRGID_R)
39 struct group grp;
40 char grbuf[GRBUF_SIZE];
41 apr_status_t rv;
42
43 /* See comment in getpwnam_safe on error handling. */
44 rv = getgrgid_r(groupid, &grp, grbuf, sizeof(grbuf), &gr);
45 if (rv) {
46 return rv;
47 }
48 if (gr == NULL) {
49 return APR_ENOENT;
50 }
51 #else
52 errno = 0;
53 if ((gr = getgrgid(groupid)) == NULL) {
54 return errno ? errno : APR_ENOENT;
55 }
56 #endif
57 *groupname = apr_pstrdup(p, gr->gr_name);
58 return APR_SUCCESS;
59 }
60
apr_gid_get(apr_gid_t * groupid,const char * groupname,apr_pool_t * p)61 APR_DECLARE(apr_status_t) apr_gid_get(apr_gid_t *groupid,
62 const char *groupname, apr_pool_t *p)
63 {
64 struct group *gr;
65
66 #if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETGRNAM_R)
67 struct group grp;
68 char grbuf[GRBUF_SIZE];
69 apr_status_t rv;
70
71 /* See comment in getpwnam_safe on error handling. */
72 rv = getgrnam_r(groupname, &grp, grbuf, sizeof(grbuf), &gr);
73 if (rv) {
74 return rv;
75 }
76 if (gr == NULL) {
77 return APR_ENOENT;
78 }
79 #else
80 errno = 0;
81 if ((gr = getgrnam(groupname)) == NULL) {
82 return errno ? errno : APR_ENOENT;
83 }
84 #endif
85 *groupid = gr->gr_gid;
86 return APR_SUCCESS;
87 }
88