summaryrefslogtreecommitdiff
path: root/user/unix/userinfo.c
blob: 815bf7e50b81499178d8184b2e6442aa7bb4a3b9 (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
/* Copyright 2000-2005 The Apache Software Foundation or its licensors, as
 * applicable.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "apr_strings.h"
#include "apr_portable.h"
#include "apr_user.h"
#include "apr_private.h"
#ifdef HAVE_PWD_H
#include <pwd.h>
#endif
#if APR_HAVE_SYS_TYPES_H
#include <sys/types.h>
#endif
#if APR_HAVE_UNISTD_H
#include <unistd.h> /* for _POSIX_THREAD_SAFE_FUNCTIONS */
#endif
#define APR_WANT_MEMFUNC
#include "apr_want.h"

#define PWBUF_SIZE 2048

static apr_status_t getpwnam_safe(const char *username,
                                  struct passwd *pw,
                                  char pwbuf[PWBUF_SIZE])
{
    struct passwd *pwptr;
#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWNAM_R)
    apr_status_t rv;

    /* POSIX defines getpwnam_r() et al to return the error number
     * rather than set errno, and requires pwptr to be set to NULL if
     * the entry is not found, imply that "not found" is not an error
     * condition; some implementations do return 0 with pwptr set to
     * NULL. */
    rv = getpwnam_r(username, pw, pwbuf, PWBUF_SIZE, &pwptr);
    if (rv) {
        return rv;
    }
    if (pwptr == NULL) {
        return APR_ENOENT;
    }
#else
    /* Some platforms (e.g. FreeBSD 4.x) do not set errno on NULL "not
     * found" return values for the non-threadsafe function either. */
    errno = 0;
    if ((pwptr = getpwnam(username)) != NULL) {
        memcpy(pw, pwptr, sizeof *pw);
    }
    else {
        return errno ? errno : APR_ENOENT;
    }
#endif
    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_uid_homepath_get(char **dirname,
                                               const char *username,
                                               apr_pool_t *p)
{
    struct passwd pw;
    char pwbuf[PWBUF_SIZE];
    apr_status_t rv;

    if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS)
        return rv;

#ifdef OS2
    /* Need to manually add user name for OS/2 */
    *dirname = apr_pstrcat(p, pw.pw_dir, pw.pw_name, NULL);
#else
    *dirname = apr_pstrdup(p, pw.pw_dir);
#endif
    return APR_SUCCESS;
}



APR_DECLARE(apr_status_t) apr_uid_current(apr_uid_t *uid,
                                          apr_gid_t *gid,
                                          apr_pool_t *p)
{
    *uid = getuid();
    *gid = getgid();
  
    return APR_SUCCESS;
}




APR_DECLARE(apr_status_t) apr_uid_get(apr_uid_t *uid, apr_gid_t *gid,
                                      const char *username, apr_pool_t *p)
{
    struct passwd pw;
    char pwbuf[PWBUF_SIZE];
    apr_status_t rv;
        
    if ((rv = getpwnam_safe(username, &pw, pwbuf)) != APR_SUCCESS)
        return rv;

    *uid = pw.pw_uid;
    *gid = pw.pw_gid;

    return APR_SUCCESS;
}

APR_DECLARE(apr_status_t) apr_uid_name_get(char **username, apr_uid_t userid,
                                           apr_pool_t *p)
{
    struct passwd *pw;
#if APR_HAS_THREADS && defined(_POSIX_THREAD_SAFE_FUNCTIONS) && defined(HAVE_GETPWUID_R)
    struct passwd pwd;
    char pwbuf[PWBUF_SIZE];
    apr_status_t rv;

    rv = getpwuid_r(userid, &pwd, pwbuf, sizeof(pwbuf), &pw);
    if (rv) {
        return rv;
    }

    if (pw == NULL) {
        return APR_ENOENT;
    }

#else
    errno = 0;
    if ((pw = getpwuid(userid)) == NULL) {
        return errno ? errno : APR_ENOENT;
    }
#endif
    *username = apr_pstrdup(p, pw->pw_name);
    return APR_SUCCESS;
}