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_file_io.h"
18 #include "apr_lib.h"
19 #include "apr_strings.h"
20 #include <string.h>
21
22 #define IS_SEP(c) (c == '/' || c == '\\')
23
24 /* Remove trailing separators that don't affect the meaning of PATH. */
path_canonicalize(const char * path,apr_pool_t * pool)25 static const char *path_canonicalize(const char *path, apr_pool_t *pool)
26 {
27 /* At some point this could eliminate redundant components. For
28 * now, it just makes sure there is no trailing slash. */
29 apr_size_t len = strlen(path);
30 apr_size_t orig_len = len;
31
32 while ((len > 0) && IS_SEP(path[len - 1])) {
33 len--;
34 }
35
36 if (len != orig_len) {
37 return apr_pstrndup(pool, path, len);
38 }
39 else {
40 return path;
41 }
42 }
43
44
45
46 /* Remove one component off the end of PATH. */
path_remove_last_component(const char * path,apr_pool_t * pool)47 static char *path_remove_last_component(const char *path, apr_pool_t *pool)
48 {
49 const char *newpath = path_canonicalize(path, pool);
50 int i;
51
52 for (i = strlen(newpath) - 1; i >= 0; i--) {
53 if (IS_SEP(path[i])) {
54 break;
55 }
56 }
57
58 return apr_pstrndup(pool, path, (i < 0) ? 0 : i);
59 }
60
61
62
apr_dir_make_recursive(const char * path,apr_fileperms_t perm,apr_pool_t * pool)63 apr_status_t apr_dir_make_recursive(const char *path, apr_fileperms_t perm,
64 apr_pool_t *pool)
65 {
66 apr_status_t apr_err = APR_SUCCESS;
67
68 apr_err = apr_dir_make(path, perm, pool); /* Try to make PATH right out */
69
70 if (APR_STATUS_IS_EEXIST(apr_err)) { /* It's OK if PATH exists */
71 return APR_SUCCESS;
72 }
73
74 if (APR_STATUS_IS_ENOENT(apr_err)) { /* Missing an intermediate dir */
75 char *dir;
76
77 dir = path_remove_last_component(path, pool);
78 apr_err = apr_dir_make_recursive(dir, perm, pool);
79
80 if (!apr_err) {
81 apr_err = apr_dir_make(path, perm, pool);
82 }
83 }
84
85 return apr_err;
86 }
87