1/*
2 * user.c: APR wrapper functions for Subversion
3 *
4 * ====================================================================
5 *    Licensed to the Apache Software Foundation (ASF) under one
6 *    or more contributor license agreements.  See the NOTICE file
7 *    distributed with this work for additional information
8 *    regarding copyright ownership.  The ASF licenses this file
9 *    to you under the Apache License, Version 2.0 (the
10 *    "License"); you may not use this file except in compliance
11 *    with the License.  You may obtain a copy of the License at
12 *
13 *      http://www.apache.org/licenses/LICENSE-2.0
14 *
15 *    Unless required by applicable law or agreed to in writing,
16 *    software distributed under the License is distributed on an
17 *    "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
18 *    KIND, either express or implied.  See the License for the
19 *    specific language governing permissions and limitations
20 *    under the License.
21 * ====================================================================
22 */
23
24
25#include <apr_pools.h>
26#include <apr_user.h>
27#include <apr_env.h>
28
29#include "svn_user.h"
30#include "svn_utf.h"
31
32/* Get the current user's name from the OS */
33static const char *
34get_os_username(apr_pool_t *pool)
35{
36#if APR_HAS_USER
37  char *username;
38  apr_uid_t uid;
39  apr_gid_t gid;
40
41  if (apr_uid_current(&uid, &gid, pool) == APR_SUCCESS &&
42      apr_uid_name_get(&username, uid, pool) == APR_SUCCESS)
43    return username;
44#endif
45
46  return NULL;
47}
48
49/* Return a UTF8 version of STR, or NULL on error.
50   Use POOL for any necessary allocation. */
51static const char *
52utf8_or_nothing(const char *str, apr_pool_t *pool) {
53  if (str)
54    {
55      const char *utf8_str;
56      svn_error_t *err = svn_utf_cstring_to_utf8(&utf8_str, str, pool);
57      if (! err)
58        return utf8_str;
59      svn_error_clear(err);
60    }
61  return NULL;
62}
63
64const char *
65svn_user_get_name(apr_pool_t *pool)
66{
67  const char *username = get_os_username(pool);
68  return utf8_or_nothing(username, pool);
69}
70
71const char *
72svn_user_get_homedir(apr_pool_t *pool)
73{
74  const char *username;
75  char *homedir;
76
77  if (apr_env_get(&homedir, "HOME", pool) == APR_SUCCESS)
78    return utf8_or_nothing(homedir, pool);
79
80  username = get_os_username(pool);
81  if (username != NULL &&
82      apr_uid_homepath_get(&homedir, username, pool) == APR_SUCCESS)
83    return utf8_or_nothing(homedir, pool);
84
85  return NULL;
86}
87