/src/httpd/srclib/apr/user/unix/userinfo.c
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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_PWD_H |
22 | | #include <pwd.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 | | #define APR_WANT_MEMFUNC |
31 | | #include "apr_want.h" |
32 | | |
33 | 0 | #define PWBUF_SIZE 2048 |
34 | | |
35 | | static apr_status_t getpwnam_safe(const char *username, |
36 | | struct passwd *pw, |
37 | | char pwbuf[PWBUF_SIZE]) |
38 | 0 | { |
39 | 0 | struct passwd *pwptr; |
40 | 0 | #if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R) |
41 | 0 | apr_status_t rv; |
42 | | |
43 | | /* POSIX defines getpwnam_r() et al to return the error number |
44 | | * rather than set errno, and requires pwptr to be set to NULL if |
45 | | * the entry is not found, imply that "not found" is not an error |
46 | | * condition; some implementations do return 0 with pwptr set to |
47 | | * NULL. */ |
48 | 0 | rv = getpwnam_r(username, pw, pwbuf, PWBUF_SIZE, &pwptr); |
49 | 0 | if (rv) { |
50 | 0 | return rv; |
51 | 0 | } |
52 | 0 | if (pwptr == NULL) { |
53 | 0 | return APR_ENOENT; |
54 | 0 | } |
55 | | #else |
56 | | /* Some platforms (e.g. FreeBSD 4.x) do not set errno on NULL "not |
57 | | * found" return values for the non-threadsafe function either. */ |
58 | | errno = 0; |
59 | | if ((pwptr = getpwnam(username)) != NULL) { |
60 | | memcpy(pw, pwptr, sizeof *pw); |
61 | | } |
62 | | else { |
63 | | return errno ? errno : APR_ENOENT; |
64 | | } |
65 | | #endif |
66 | 0 | return APR_SUCCESS; |
67 | 0 | } |
68 | | |
69 | | APR_DECLARE(apr_status_t) apr_uid_homepath_get(char **dirname, |
70 | | const char *username, |
71 | | apr_pool_t *p) |
72 | 0 | { |
73 | 0 | struct passwd pw; |
74 | 0 | char pwbuf[PWBUF_SIZE]; |
75 | 0 | apr_status_t rv; |
76 | |
|
77 | 0 | if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS) |
78 | 0 | return rv; |
79 | | |
80 | | #ifdef OS2 |
81 | | /* Need to manually add user name for OS/2 */ |
82 | | *dirname = apr_pstrcat(p, pw.pw_dir, pw.pw_name, NULL); |
83 | | #else |
84 | 0 | *dirname = apr_pstrdup(p, pw.pw_dir); |
85 | 0 | #endif |
86 | 0 | return APR_SUCCESS; |
87 | 0 | } |
88 | | |
89 | | |
90 | | |
91 | | APR_DECLARE(apr_status_t) apr_uid_current(apr_uid_t *uid, |
92 | | apr_gid_t *gid, |
93 | | apr_pool_t *p) |
94 | 0 | { |
95 | 0 | *uid = getuid(); |
96 | 0 | *gid = getgid(); |
97 | |
|
98 | 0 | return APR_SUCCESS; |
99 | 0 | } |
100 | | |
101 | | |
102 | | |
103 | | |
104 | | APR_DECLARE(apr_status_t) apr_uid_get(apr_uid_t *uid, apr_gid_t *gid, |
105 | | const char *username, apr_pool_t *p) |
106 | 0 | { |
107 | 0 | struct passwd pw; |
108 | 0 | char pwbuf[PWBUF_SIZE]; |
109 | 0 | apr_status_t rv; |
110 | |
|
111 | 0 | if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS) |
112 | 0 | return rv; |
113 | | |
114 | 0 | *uid = pw.pw_uid; |
115 | 0 | *gid = pw.pw_gid; |
116 | |
|
117 | 0 | return APR_SUCCESS; |
118 | 0 | } |
119 | | |
120 | | APR_DECLARE(apr_status_t) apr_uid_name_get(char **username, apr_uid_t userid, |
121 | | apr_pool_t *p) |
122 | 0 | { |
123 | 0 | struct passwd *pw; |
124 | 0 | #if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R) |
125 | 0 | struct passwd pwd; |
126 | 0 | char pwbuf[PWBUF_SIZE]; |
127 | 0 | apr_status_t rv; |
128 | |
|
129 | 0 | rv = getpwuid_r(userid, &pwd, pwbuf, sizeof(pwbuf), &pw); |
130 | 0 | if (rv) { |
131 | 0 | return rv; |
132 | 0 | } |
133 | | |
134 | 0 | if (pw == NULL) { |
135 | 0 | return APR_ENOENT; |
136 | 0 | } |
137 | | |
138 | | #else |
139 | | errno = 0; |
140 | | if ((pw = getpwuid(userid)) == NULL) { |
141 | | return errno ? errno : APR_ENOENT; |
142 | | } |
143 | | #endif |
144 | 0 | *username = apr_pstrdup(p, pw->pw_name); |
145 | 0 | return APR_SUCCESS; |
146 | 0 | } |