summaryrefslogtreecommitdiff
path: root/Zend/zend_virtual_cwd.h
blob: 574bee992bd0b4aefc309a47c9c426149cf2d85a (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
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
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
/*
   +----------------------------------------------------------------------+
   | PHP Version 7                                                        |
   +----------------------------------------------------------------------+
   | Copyright (c) The PHP Group                                          |
   +----------------------------------------------------------------------+
   | This source file is subject to version 3.01 of the PHP license,      |
   | that is bundled with this package in the file LICENSE, and is        |
   | available through the world-wide-web at the following url:           |
   | http://www.php.net/license/3_01.txt                                  |
   | If you did not receive a copy of the PHP license and are unable to   |
   | obtain it through the world-wide-web, please send a note to          |
   | license@php.net so we can mail you a copy immediately.               |
   +----------------------------------------------------------------------+
   | Authors: Andi Gutmans <andi@php.net>                                 |
   |          Sascha Schumann <sascha@schumann.cx>                        |
   |          Pierre Joye <pierre@php.net>                                |
   +----------------------------------------------------------------------+
*/

#ifndef VIRTUAL_CWD_H
#define VIRTUAL_CWD_H

#include "TSRM.h"

#include <sys/types.h>
#include <sys/stat.h>
#include <ctype.h>

#ifdef HAVE_UTIME_H
#include <utime.h>
#endif

#include <stdarg.h>
#include <limits.h>

#if HAVE_SYS_PARAM_H
# include <sys/param.h>
#endif

#ifndef MAXPATHLEN
# if _WIN32
#  include "win32/ioutil.h"
#  define MAXPATHLEN PHP_WIN32_IOUTIL_MAXPATHLEN
# elif PATH_MAX
#  define MAXPATHLEN PATH_MAX
# elif defined(MAX_PATH)
#  define MAXPATHLEN MAX_PATH
# else
#  define MAXPATHLEN 256
# endif
#endif

#ifdef ZTS
#define VIRTUAL_DIR
#endif

#ifndef ZEND_WIN32
#include <unistd.h>
#else
#include <direct.h>
#endif

#if defined(__osf__) || defined(_AIX)
#include <errno.h>
#endif

#ifdef ZEND_WIN32
#include "win32/readdir.h"
#include <sys/utime.h>
#include "win32/ioutil.h"
/* mode_t isn't defined on Windows */
typedef unsigned short mode_t;

#define DEFAULT_SLASH '\\'
#define DEFAULT_DIR_SEPARATOR	';'
#define IS_SLASH(c)	((c) == '/' || (c) == '\\')
#define IS_SLASH_P(c)	(*(c) == '/' || \
        (*(c) == '\\' && !IsDBCSLeadByte(*(c-1))))

/* COPY_WHEN_ABSOLUTE is 2 under Win32 because by chance both regular absolute paths
   in the file system and UNC paths need copying of two characters */
#define COPY_WHEN_ABSOLUTE(path) 2
#define IS_UNC_PATH(path, len) \
	(len >= 2 && IS_SLASH(path[0]) && IS_SLASH(path[1]))
#define IS_ABSOLUTE_PATH(path, len) \
	(len >= 2 && (/* is local */isalpha(path[0]) && path[1] == ':' || /* is UNC */IS_SLASH(path[0]) && IS_SLASH(path[1])))

#else
#ifdef HAVE_DIRENT_H
#include <dirent.h>
#endif

#define DEFAULT_SLASH '/'

#ifdef __riscos__
#define DEFAULT_DIR_SEPARATOR  ';'
#else
#define DEFAULT_DIR_SEPARATOR  ':'
#endif

#define IS_SLASH(c)	((c) == '/')
#define IS_SLASH_P(c)	(*(c) == '/')

#endif


#ifndef COPY_WHEN_ABSOLUTE
#define COPY_WHEN_ABSOLUTE(path) 0
#endif

#ifndef IS_ABSOLUTE_PATH
#define IS_ABSOLUTE_PATH(path, len) \
	(IS_SLASH(path[0]))
#endif

#ifdef TSRM_EXPORTS
#define CWD_EXPORTS
#endif

#ifdef ZEND_WIN32
#	ifdef CWD_EXPORTS
#		define CWD_API __declspec(dllexport)
#	else
#		define CWD_API __declspec(dllimport)
#	endif
#elif defined(__GNUC__) && __GNUC__ >= 4
#	define CWD_API __attribute__ ((visibility("default")))
#else
#	define CWD_API
#endif

#ifdef ZEND_WIN32
# define php_sys_stat_ex php_win32_ioutil_stat_ex
# define php_sys_stat php_win32_ioutil_stat
# define php_sys_lstat php_win32_ioutil_lstat
# define php_sys_fstat php_win32_ioutil_fstat
# define php_sys_readlink php_win32_ioutil_readlink
# define php_sys_symlink php_win32_ioutil_symlink
# define php_sys_link php_win32_ioutil_link
#else
# define php_sys_stat stat
# define php_sys_lstat lstat
# define php_sys_fstat fstat
# ifdef HAVE_SYMLINK
# define php_sys_readlink(link, target, target_len) readlink(link, target, target_len)
# define php_sys_symlink symlink
# define php_sys_link link
# endif
#endif

typedef struct _cwd_state {
	char *cwd;
	size_t cwd_length;
} cwd_state;

typedef int (*verify_path_func)(const cwd_state *);

CWD_API void virtual_cwd_startup(void);
CWD_API void virtual_cwd_shutdown(void);
CWD_API int virtual_cwd_activate(void);
CWD_API int virtual_cwd_deactivate(void);
CWD_API char *virtual_getcwd_ex(size_t *length);
CWD_API char *virtual_getcwd(char *buf, size_t size);
CWD_API int virtual_chdir(const char *path);
CWD_API int virtual_chdir_file(const char *path, int (*p_chdir)(const char *path));
CWD_API int virtual_filepath(const char *path, char **filepath);
CWD_API int virtual_filepath_ex(const char *path, char **filepath, verify_path_func verify_path);
CWD_API char *virtual_realpath(const char *path, char *real_path);
CWD_API FILE *virtual_fopen(const char *path, const char *mode);
CWD_API int virtual_open(const char *path, int flags, ...);
CWD_API int virtual_creat(const char *path, mode_t mode);
CWD_API int virtual_rename(const char *oldname, const char *newname);
CWD_API int virtual_stat(const char *path, zend_stat_t *buf);
CWD_API int virtual_lstat(const char *path, zend_stat_t *buf);
CWD_API int virtual_unlink(const char *path);
CWD_API int virtual_mkdir(const char *pathname, mode_t mode);
CWD_API int virtual_rmdir(const char *pathname);
CWD_API DIR *virtual_opendir(const char *pathname);
CWD_API FILE *virtual_popen(const char *command, const char *type);
CWD_API int virtual_access(const char *pathname, int mode);

#if HAVE_UTIME
CWD_API int virtual_utime(const char *filename, struct utimbuf *buf);
#endif
CWD_API int virtual_chmod(const char *filename, mode_t mode);
#if !defined(ZEND_WIN32)
CWD_API int virtual_chown(const char *filename, uid_t owner, gid_t group, int link);
#endif

/* One of the following constants must be used as the last argument
   in virtual_file_ex() call. */

#define CWD_EXPAND   0 /* expand "." and ".." but don't resolve symlinks     */
#define CWD_FILEPATH 1 /* resolve symlinks if file is exist otherwise expand */
#define CWD_REALPATH 2 /* call realpath(), resolve symlinks. File must exist */

CWD_API int virtual_file_ex(cwd_state *state, const char *path, verify_path_func verify_path, int use_realpath);

CWD_API char *tsrm_realpath(const char *path, char *real_path);

#define REALPATH_CACHE_TTL  (2*60) /* 2 minutes */
#define REALPATH_CACHE_SIZE 0      /* disabled while php.ini isn't loaded */

typedef struct _realpath_cache_bucket {
	zend_ulong                    key;
	char                          *path;
	char                          *realpath;
	struct _realpath_cache_bucket *next;
	time_t                         expires;
	uint16_t                       path_len;
	uint16_t                       realpath_len;
	uint8_t                        is_dir:1;
#ifdef ZEND_WIN32
	uint8_t                        is_rvalid:1;
	uint8_t                        is_readable:1;
	uint8_t                        is_wvalid:1;
	uint8_t                        is_writable:1;
#endif
} realpath_cache_bucket;

typedef struct _virtual_cwd_globals {
	cwd_state cwd;
	zend_long                   realpath_cache_size;
	zend_long                   realpath_cache_size_limit;
	zend_long                   realpath_cache_ttl;
	realpath_cache_bucket *realpath_cache[1024];
} virtual_cwd_globals;

#ifdef ZTS
extern ts_rsrc_id cwd_globals_id;
extern size_t cwd_globals_offset;
# define CWDG(v) ZEND_TSRMG_FAST(cwd_globals_offset, virtual_cwd_globals *, v)
#else
extern virtual_cwd_globals cwd_globals;
# define CWDG(v) (cwd_globals.v)
#endif

CWD_API void realpath_cache_clean(void);
CWD_API void realpath_cache_del(const char *path, size_t path_len);
CWD_API realpath_cache_bucket* realpath_cache_lookup(const char *path, size_t path_len, time_t t);
CWD_API zend_long realpath_cache_size(void);
CWD_API zend_long realpath_cache_max_buckets(void);
CWD_API realpath_cache_bucket** realpath_cache_get_buckets(void);

#ifdef CWD_EXPORTS
extern void virtual_cwd_main_cwd_init(uint8_t);
#endif

/* The actual macros to be used in programs using TSRM
 * If the program defines VIRTUAL_DIR it will use the
 * virtual_* functions
 */

#ifdef VIRTUAL_DIR

#define VCWD_GETCWD(buff, size) virtual_getcwd(buff, size)
#define VCWD_FOPEN(path, mode) virtual_fopen(path, mode)
/* Because open() has two modes, we have to macros to replace it */
#define VCWD_OPEN(path, flags) virtual_open(path, flags)
#define VCWD_OPEN_MODE(path, flags, mode) virtual_open(path, flags, mode)
#define VCWD_CREAT(path, mode) virtual_creat(path, mode)
#define VCWD_CHDIR(path) virtual_chdir(path)
#define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, virtual_chdir)
#define VCWD_GETWD(buf)
#define VCWD_REALPATH(path, real_path) virtual_realpath(path, real_path)
#define VCWD_RENAME(oldname, newname) virtual_rename(oldname, newname)
#define VCWD_STAT(path, buff) virtual_stat(path, buff)
# define VCWD_LSTAT(path, buff) virtual_lstat(path, buff)
#define VCWD_UNLINK(path) virtual_unlink(path)
#define VCWD_MKDIR(pathname, mode) virtual_mkdir(pathname, mode)
#define VCWD_RMDIR(pathname) virtual_rmdir(pathname)
#define VCWD_OPENDIR(pathname) virtual_opendir(pathname)
#define VCWD_POPEN(command, type) virtual_popen(command, type)
#define VCWD_ACCESS(pathname, mode) virtual_access(pathname, mode)
#if HAVE_UTIME
#define VCWD_UTIME(path, time) virtual_utime(path, time)
#endif
#define VCWD_CHMOD(path, mode) virtual_chmod(path, mode)
#if !defined(ZEND_WIN32)
#define VCWD_CHOWN(path, owner, group) virtual_chown(path, owner, group, 0)
#if HAVE_LCHOWN
#define VCWD_LCHOWN(path, owner, group) virtual_chown(path, owner, group, 1)
#endif
#endif

#else

#define VCWD_CREAT(path, mode) creat(path, mode)
/* rename on windows will fail if newname already exists.
   MoveFileEx has to be used */
#if defined(ZEND_WIN32)
#define VCWD_FOPEN(path, mode)  php_win32_ioutil_fopen(path, mode)
#define VCWD_OPEN(path, flags) php_win32_ioutil_open(path, flags)
#define VCWD_OPEN_MODE(path, flags, mode) php_win32_ioutil_open(path, flags, mode)
# define VCWD_RENAME(oldname, newname) php_win32_ioutil_rename(oldname, newname)
#define VCWD_MKDIR(pathname, mode) php_win32_ioutil_mkdir(pathname, mode)
#define VCWD_RMDIR(pathname) php_win32_ioutil_rmdir(pathname)
#define VCWD_UNLINK(path) php_win32_ioutil_unlink(path)
#define VCWD_CHDIR(path) php_win32_ioutil_chdir(path)
#define VCWD_ACCESS(pathname, mode) tsrm_win32_access(pathname, mode)
#define VCWD_GETCWD(buff, size) php_win32_ioutil_getcwd(buff, size)
#define VCWD_CHMOD(path, mode) php_win32_ioutil_chmod(path, mode)
#else
#define VCWD_FOPEN(path, mode)  fopen(path, mode)
#define VCWD_OPEN(path, flags) open(path, flags)
#define VCWD_OPEN_MODE(path, flags, mode)	open(path, flags, mode)
# define VCWD_RENAME(oldname, newname) rename(oldname, newname)
#define VCWD_MKDIR(pathname, mode) mkdir(pathname, mode)
#define VCWD_RMDIR(pathname) rmdir(pathname)
#define VCWD_UNLINK(path) unlink(path)
#define VCWD_CHDIR(path) chdir(path)
#define VCWD_ACCESS(pathname, mode) access(pathname, mode)
#define VCWD_GETCWD(buff, size) getcwd(buff, size)
#define VCWD_CHMOD(path, mode) chmod(path, mode)
#endif

#define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, chdir)
#define VCWD_GETWD(buf) getwd(buf)
#define VCWD_STAT(path, buff) php_sys_stat(path, buff)
#define VCWD_LSTAT(path, buff) lstat(path, buff)
#define VCWD_OPENDIR(pathname) opendir(pathname)
#define VCWD_POPEN(command, type) popen(command, type)

#define VCWD_REALPATH(path, real_path) tsrm_realpath(path, real_path)

#if HAVE_UTIME
# ifdef ZEND_WIN32
#  define VCWD_UTIME(path, time) win32_utime(path, time)
# else
#  define VCWD_UTIME(path, time) utime(path, time)
# endif
#endif

#if !defined(ZEND_WIN32)
#define VCWD_CHOWN(path, owner, group) chown(path, owner, group)
#if HAVE_LCHOWN
#define VCWD_LCHOWN(path, owner, group) lchown(path, owner, group)
#endif
#endif

#endif

/* Global stat declarations */
#ifndef _S_IFDIR
#define _S_IFDIR S_IFDIR
#endif

#ifndef _S_IFREG
#define _S_IFREG S_IFREG
#endif

#ifndef S_IFLNK
#define _IFLNK  0120000	/* symbolic link */
#define S_IFLNK _IFLNK
#endif

#ifndef S_ISDIR
#define S_ISDIR(mode)	(((mode)&S_IFMT) == S_IFDIR)
#endif

#ifndef S_ISREG
#define S_ISREG(mode)	(((mode)&S_IFMT) == S_IFREG)
#endif

#ifndef S_ISLNK
#define S_ISLNK(mode)	(((mode)&S_IFMT) == S_IFLNK)
#endif

#ifndef S_IXROOT
#define S_IXROOT ( S_IXUSR | S_IXGRP | S_IXOTH )
#endif

/* XXX should be _S_IFIFO? */
#ifndef S_IFIFO
#define	_IFIFO  0010000	/* fifo */
#define S_IFIFO	_IFIFO
#endif

#ifndef S_IFBLK
#define	_IFBLK  0060000	/* block special */
#define S_IFBLK	_IFBLK
#endif

#endif /* VIRTUAL_CWD_H */