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
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
|
/* ====================================================================
* The Apache Software License, Version 1.1
*
* Copyright (c) 2000-2002 The Apache Software Foundation. All rights
* reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
*
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
*
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in
* the documentation and/or other materials provided with the
* distribution.
*
* 3. The end-user documentation included with the redistribution,
* if any, must include the following acknowledgment:
* "This product includes software developed by the
* Apache Software Foundation (http://www.apache.org/)."
* Alternately, this acknowledgment may appear in the software itself,
* if and wherever such third-party acknowledgments normally appear.
*
* 4. The names "Apache" and "Apache Software Foundation" must
* not be used to endorse or promote products derived from this
* software without prior written permission. For written
* permission, please contact apache@apache.org.
*
* 5. Products derived from this software may not be called "Apache",
* nor may "Apache" appear in their name, without prior written
* permission of the Apache Software Foundation.
*
* THIS SOFTWARE IS PROVIDED ``AS IS'' AND ANY EXPRESSED OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE APACHE SOFTWARE FOUNDATION OR
* ITS CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
* LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
* USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
* OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
* OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* <http://www.apache.org/>.
*/
#include "fileio.h"
#include "apr_file_io.h"
#include "apr_general.h"
#include "apr_strings.h"
#include "apr_errno.h"
#include "apr_hash.h"
#ifdef USE_CSTAT_MUTEX
#include "apr_thread_mutex.h"
#endif
static apr_filetype_e filetype_from_mode(mode_t mode)
{
apr_filetype_e type = APR_NOFILE;
if (S_ISREG(mode))
type = APR_REG;
if (S_ISDIR(mode))
type = APR_DIR;
if (S_ISCHR(mode))
type = APR_CHR;
if (S_ISBLK(mode))
type = APR_BLK;
if (S_ISFIFO(mode))
type = APR_PIPE;
if (S_ISLNK(mode))
type = APR_LNK;
if (S_ISSOCK(mode))
type = APR_SOCK;
return type;
}
static void fill_out_finfo(apr_finfo_t *finfo, struct stat *info,
apr_int32_t wanted)
{
finfo->valid = APR_FINFO_MIN | APR_FINFO_IDENT | APR_FINFO_NLINK;
finfo->protection = apr_unix_mode2perms(info->st_mode);
finfo->filetype = filetype_from_mode(info->st_mode);
finfo->user = info->st_uid;
finfo->group = info->st_gid;
finfo->size = info->st_size;
finfo->inode = info->st_ino;
finfo->device = info->st_dev;
finfo->nlink = info->st_nlink;
apr_time_ansi_put(&finfo->atime, info->st_atime.tv_sec);
apr_time_ansi_put(&finfo->mtime, info->st_mtime.tv_sec);
apr_time_ansi_put(&finfo->ctime, info->st_ctime.tv_sec);
/* ### needs to be revisited
* if (wanted & APR_FINFO_CSIZE) {
* finfo->csize = info->st_blocks * 512;
* finfo->valid |= APR_FINFO_CSIZE;
* }
*/
}
char *case_filename(apr_pool_t *pPool, const char *szFile)
{
return (char*)szFile;
}
APR_DECLARE(apr_status_t) apr_file_info_get(apr_finfo_t *finfo,
apr_int32_t wanted,
apr_file_t *thefile)
{
struct stat info;
if (fstat(thefile->filedes, &info) == 0) {
finfo->pool = thefile->pool;
finfo->fname = thefile->fname;
fill_out_finfo(finfo, &info, wanted);
return (wanted & ~finfo->valid) ? APR_INCOMPLETE : APR_SUCCESS;
}
else {
return errno;
}
}
APR_DECLARE(apr_status_t) apr_file_perms_set(const char *fname,
apr_fileperms_t perms)
{
mode_t mode = apr_unix_perms2mode(perms);
if (chmod(fname, mode) == -1)
return errno;
return APR_SUCCESS;
}
APR_DECLARE(apr_status_t) apr_file_attrs_set(const char *fname,
apr_fileattrs_t attributes,
apr_fileattrs_t attr_mask,
apr_pool_t *pool)
{
apr_status_t status;
apr_finfo_t finfo;
status = apr_stat(&finfo, fname, APR_FINFO_PROT, pool);
if (!APR_STATUS_IS_SUCCESS(status))
return status;
/* ### TODO: should added bits be umask'd? */
if (attr_mask & APR_FILE_ATTR_READONLY)
{
if (attributes & APR_FILE_ATTR_READONLY)
{
finfo.protection &= ~APR_UWRITE;
finfo.protection &= ~APR_GWRITE;
finfo.protection &= ~APR_WWRITE;
}
else
{
/* ### umask this! */
finfo.protection |= APR_UWRITE;
finfo.protection |= APR_GWRITE;
finfo.protection |= APR_WWRITE;
}
}
if (attr_mask & APR_FILE_ATTR_EXECUTABLE)
{
if (attributes & APR_FILE_ATTR_EXECUTABLE)
{
/* ### umask this! */
finfo.protection |= APR_UEXECUTE;
finfo.protection |= APR_GEXECUTE;
finfo.protection |= APR_WEXECUTE;
}
else
{
finfo.protection &= ~APR_UEXECUTE;
finfo.protection &= ~APR_GEXECUTE;
finfo.protection &= ~APR_WEXECUTE;
}
}
return apr_file_perms_set(fname, finfo.protection);
}
typedef struct apr_stat_entry_t apr_stat_entry_t;
struct apr_stat_entry_t {
struct stat info;
apr_time_t expire;
};
typedef struct apr_stat_cache_t apr_stat_cache_t;
struct apr_stat_cache_t {
apr_hash_t *statCache;
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_t *statcache_mutex;
#endif
};
int cstat (const char *path, struct stat *buf)
{
apr_stat_cache_t *statCacheData = (apr_stat_cache_t *)getStatCache();
apr_hash_t *statCache = NULL;
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_t *statcache_mutex;
#endif
apr_pool_t *gPool = (apr_pool_t *)getGlobalPool();
apr_stat_entry_t *stat_entry;
struct stat *info;
apr_time_t now = apr_time_now();
char *key;
int ret;
int found = 0;
if (!gPool)
return stat(path, buf);
if (!statCacheData) {
statCacheData = (apr_stat_cache_t *)apr_palloc (gPool, sizeof(apr_stat_cache_t));
statCache = apr_hash_make(gPool);
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_create(&statcache_mutex, APR_THREAD_MUTEX_DEFAULT, gPool);
statCacheData->statcache_mutex = statcache_mutex;
#endif
statCacheData->statCache = statCache;
setStatCache((void*)statCacheData);
}
else {
statCache = statCacheData->statCache;
#ifdef USE_CSTAT_MUTEX
statcache_mutex = statCacheData->statcache_mutex;
#endif
}
if (statCache) {
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_lock(statcache_mutex);
#endif
stat_entry = (apr_stat_entry_t*) apr_hash_get(statCache, path, APR_HASH_KEY_STRING);
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_unlock(statcache_mutex);
#endif
if (stat_entry) {
if ((now - stat_entry->expire) <= APR_USEC_PER_SEC) {
memcpy (buf, &(stat_entry->info), sizeof(struct stat));
found = 1;
}
}
if (!found) {
ret = stat(path, buf);
if (ret == 0) {
if (!stat_entry) {
key = apr_pstrdup (gPool, path);
stat_entry = apr_palloc (gPool, sizeof(apr_stat_entry_t));
memcpy (&(stat_entry->info), buf, sizeof(struct stat));
stat_entry->expire = now;
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_lock(statcache_mutex);
#endif
apr_hash_set(statCache, key, APR_HASH_KEY_STRING, stat_entry);
#ifdef USE_CSTAT_MUTEX
apr_thread_mutex_unlock(statcache_mutex);
#endif
}
else {
memcpy (&(stat_entry->info), buf, sizeof(struct stat));
stat_entry->expire = now;
}
}
else
return ret;
}
}
else {
return stat(path, buf);
}
return 0;
}
APR_DECLARE(apr_status_t) apr_stat(apr_finfo_t *finfo,
const char *fname,
apr_int32_t wanted, apr_pool_t *pool)
{
struct stat info;
int srv;
char *s;
srv = cstat(fname, &info);
if (srv == 0) {
finfo->pool = pool;
finfo->fname = fname;
fill_out_finfo(finfo, &info, wanted);
if (wanted & APR_FINFO_LINK)
wanted &= ~APR_FINFO_LINK;
if (wanted & APR_FINFO_NAME) {
s = strrchr(case_filename(pool, fname), '/');
if (s) {
finfo->name = apr_pstrdup(pool, &s[1]);
finfo->valid |= APR_FINFO_NAME;
}
}
return (wanted & ~finfo->valid) ? APR_INCOMPLETE : APR_SUCCESS;
}
else {
#if !defined(ENOENT) || !defined(ENOTDIR)
#error ENOENT || ENOTDIR not defined; please see the
#error comments at this line in the source for a workaround.
/*
* If ENOENT || ENOTDIR is not defined in one of the your OS's
* include files, APR cannot report a good reason why the stat()
* of the file failed; there are cases where it can fail even though
* the file exists. This opens holes in Apache, for example, because
* it becomes possible for someone to get a directory listing of a
* directory even though there is an index (eg. index.html) file in
* it. If you do not have a problem with this, delete the above
* #error lines and start the compile again. If you need to do this,
* please submit a bug report to http://www.apache.org/bug_report.html
* letting us know that you needed to do this. Please be sure to
* include the operating system you are using.
*/
/* WARNING: All errors will be handled as not found
*/
#if !defined(ENOENT)
return APR_ENOENT;
#else
/* WARNING: All errors but not found will be handled as not directory
*/
if (errno != ENOENT)
return APR_ENOENT;
else
return errno;
#endif
#else /* All was defined well, report the usual: */
return errno;
#endif
}
}
/* Perhaps this becomes nothing but a macro?
*/
APR_DECLARE(apr_status_t) apr_lstat(apr_finfo_t *finfo, const char *fname,
apr_int32_t wanted, apr_pool_t *pool)
{
return apr_stat(finfo, fname, wanted | APR_FINFO_LINK, pool);
}
|