1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2014 The PHP Group |
6: +----------------------------------------------------------------------+
7: | This source file is subject to version 3.01 of the PHP license, |
8: | that is bundled with this package in the file LICENSE, and is |
9: | available through the world-wide-web at the following url: |
10: | http://www.php.net/license/3_01.txt |
11: | If you did not receive a copy of the PHP license and are unable to |
12: | obtain it through the world-wide-web, please send a note to |
13: | license@php.net so we can mail you a copy immediately. |
14: +----------------------------------------------------------------------+
15: | Authors: Andi Gutmans <andi@zend.com> |
16: | Sascha Schumann <sascha@schumann.cx> |
17: | Pierre Joye <pierre@php.net> |
18: +----------------------------------------------------------------------+
19: */
20:
21: /* $Id: tsrm_virtual_cwd.h,v 1.1.1.4 2014/06/15 20:04:03 misho Exp $ */
22:
23: #ifndef VIRTUAL_CWD_H
24: #define VIRTUAL_CWD_H
25:
26: #include "TSRM.h"
27: #include "tsrm_config_common.h"
28:
29: #include <sys/types.h>
30: #include <sys/stat.h>
31: #include <ctype.h>
32:
33: #ifdef HAVE_UTIME_H
34: #include <utime.h>
35: #endif
36:
37: #ifdef HAVE_STDARG_H
38: #include <stdarg.h>
39: #endif
40:
41: #ifdef ZTS
42: #define VIRTUAL_DIR
43: #endif
44:
45: #ifndef TSRM_WIN32
46: #include <unistd.h>
47: #else
48: #include <direct.h>
49: #endif
50:
51: #if defined(__osf__) || defined(_AIX)
52: #include <errno.h>
53: #endif
54:
55: #ifdef TSRM_WIN32
56: #include "readdir.h"
57: #include <sys/utime.h>
58: /* mode_t isn't defined on Windows */
59: typedef unsigned short mode_t;
60:
61: #define DEFAULT_SLASH '\\'
62: #define DEFAULT_DIR_SEPARATOR ';'
63: #define IS_SLASH(c) ((c) == '/' || (c) == '\\')
64: #define IS_SLASH_P(c) (*(c) == '/' || \
65: (*(c) == '\\' && !IsDBCSLeadByte(*(c-1))))
66:
67: /* COPY_WHEN_ABSOLUTE is 2 under Win32 because by chance both regular absolute paths
68: in the file system and UNC paths need copying of two characters */
69: #define COPY_WHEN_ABSOLUTE(path) 2
70: #define IS_UNC_PATH(path, len) \
71: (len >= 2 && IS_SLASH(path[0]) && IS_SLASH(path[1]))
72: #define IS_ABSOLUTE_PATH(path, len) \
73: (len >= 2 && ((isalpha(path[0]) && path[1] == ':') || IS_UNC_PATH(path, len)))
74:
75: #elif defined(NETWARE)
76: #ifdef HAVE_DIRENT_H
77: #include <dirent.h>
78: #endif
79:
80: #define DEFAULT_SLASH '/'
81: #define DEFAULT_DIR_SEPARATOR ';'
82: #define IS_SLASH(c) ((c) == '/' || (c) == '\\')
83: #define IS_SLASH_P(c) IS_SLASH(*(c))
84: /* Colon indicates volume name, either first character should be forward slash or backward slash */
85: #define IS_ABSOLUTE_PATH(path, len) \
86: ((strchr(path, ':') != NULL) || ((len >= 1) && ((path[0] == '/') || (path[0] == '\\'))))
87:
88: #else
89: #ifdef HAVE_DIRENT_H
90: #include <dirent.h>
91: #endif
92:
93: #define DEFAULT_SLASH '/'
94:
95: #ifdef __riscos__
96: #define DEFAULT_DIR_SEPARATOR ';'
97: #else
98: #define DEFAULT_DIR_SEPARATOR ':'
99: #endif
100:
101: #define IS_SLASH(c) ((c) == '/')
102: #define IS_SLASH_P(c) (*(c) == '/')
103:
104: #endif
105:
106:
107: #ifndef COPY_WHEN_ABSOLUTE
108: #define COPY_WHEN_ABSOLUTE(path) 0
109: #endif
110:
111: #ifndef IS_ABSOLUTE_PATH
112: #define IS_ABSOLUTE_PATH(path, len) \
113: (IS_SLASH(path[0]))
114: #endif
115:
116: #ifdef TSRM_EXPORTS
117: #define CWD_EXPORTS
118: #endif
119:
120: #ifdef TSRM_WIN32
121: # ifdef CWD_EXPORTS
122: # define CWD_API __declspec(dllexport)
123: # else
124: # define CWD_API __declspec(dllimport)
125: # endif
126: #elif defined(__GNUC__) && __GNUC__ >= 4
127: # define CWD_API __attribute__ ((visibility("default")))
128: #else
129: # define CWD_API
130: #endif
131:
132: #ifdef TSRM_WIN32
133: CWD_API int php_sys_stat_ex(const char *path, struct stat *buf, int lstat);
134: # define php_sys_stat(path, buf) php_sys_stat_ex(path, buf, 0)
135: # define php_sys_lstat(path, buf) php_sys_stat_ex(path, buf, 1)
136: CWD_API int php_sys_readlink(const char *link, char *target, size_t target_len);
137: #else
138: # define php_sys_stat stat
139: # define php_sys_lstat lstat
140: # ifdef HAVE_SYMLINK
141: # define php_sys_readlink(link, target, target_len) readlink(link, target, target_len)
142: # endif
143: #endif
144:
145: typedef struct _cwd_state {
146: char *cwd;
147: int cwd_length;
148: } cwd_state;
149:
150: typedef int (*verify_path_func)(const cwd_state *);
151:
152: CWD_API void virtual_cwd_startup(void);
153: CWD_API void virtual_cwd_shutdown(void);
154: CWD_API char *virtual_getcwd_ex(size_t *length TSRMLS_DC);
155: CWD_API char *virtual_getcwd(char *buf, size_t size TSRMLS_DC);
156: CWD_API int virtual_chdir(const char *path TSRMLS_DC);
157: CWD_API int virtual_chdir_file(const char *path, int (*p_chdir)(const char *path TSRMLS_DC) TSRMLS_DC);
158: CWD_API int virtual_filepath(const char *path, char **filepath TSRMLS_DC);
159: CWD_API int virtual_filepath_ex(const char *path, char **filepath, verify_path_func verify_path TSRMLS_DC);
160: CWD_API char *virtual_realpath(const char *path, char *real_path TSRMLS_DC);
161: CWD_API FILE *virtual_fopen(const char *path, const char *mode TSRMLS_DC);
162: CWD_API int virtual_open(const char *path TSRMLS_DC, int flags, ...);
163: CWD_API int virtual_creat(const char *path, mode_t mode TSRMLS_DC);
164: CWD_API int virtual_rename(char *oldname, char *newname TSRMLS_DC);
165: CWD_API int virtual_stat(const char *path, struct stat *buf TSRMLS_DC);
166: CWD_API int virtual_lstat(const char *path, struct stat *buf TSRMLS_DC);
167: CWD_API int virtual_unlink(const char *path TSRMLS_DC);
168: CWD_API int virtual_mkdir(const char *pathname, mode_t mode TSRMLS_DC);
169: CWD_API int virtual_rmdir(const char *pathname TSRMLS_DC);
170: CWD_API DIR *virtual_opendir(const char *pathname TSRMLS_DC);
171: CWD_API FILE *virtual_popen(const char *command, const char *type TSRMLS_DC);
172: CWD_API int virtual_access(const char *pathname, int mode TSRMLS_DC);
173: #if defined(TSRM_WIN32)
174: /* these are not defined in win32 headers */
175: #ifndef W_OK
176: #define W_OK 0x02
177: #endif
178: #ifndef R_OK
179: #define R_OK 0x04
180: #endif
181: #ifndef X_OK
182: #define X_OK 0x01
183: #endif
184: #ifndef F_OK
185: #define F_OK 0x00
186: #endif
187: #endif
188:
189: #if HAVE_UTIME
190: CWD_API int virtual_utime(const char *filename, struct utimbuf *buf TSRMLS_DC);
191: #endif
192: CWD_API int virtual_chmod(const char *filename, mode_t mode TSRMLS_DC);
193: #if !defined(TSRM_WIN32) && !defined(NETWARE)
194: CWD_API int virtual_chown(const char *filename, uid_t owner, gid_t group, int link TSRMLS_DC);
195: #endif
196:
197: /* One of the following constants must be used as the last argument
198: in virtual_file_ex() call. */
199:
200: #define CWD_EXPAND 0 /* expand "." and ".." but dont resolve symlinks */
201: #define CWD_FILEPATH 1 /* resolve symlinks if file is exist otherwise expand */
202: #define CWD_REALPATH 2 /* call realpath(), resolve symlinks. File must exist */
203:
204: CWD_API int virtual_file_ex(cwd_state *state, const char *path, verify_path_func verify_path, int use_realpath TSRMLS_DC);
205:
206: CWD_API char *tsrm_realpath(const char *path, char *real_path TSRMLS_DC);
207:
208: #define REALPATH_CACHE_TTL (2*60) /* 2 minutes */
209: #define REALPATH_CACHE_SIZE 0 /* disabled while php.ini isn't loaded */
210:
211: typedef struct _realpath_cache_bucket {
212: unsigned long key;
213: char *path;
214: int path_len;
215: char *realpath;
216: int realpath_len;
217: int is_dir;
218: time_t expires;
219: #ifdef PHP_WIN32
220: unsigned char is_rvalid;
221: unsigned char is_readable;
222: unsigned char is_wvalid;
223: unsigned char is_writable;
224: #endif
225: struct _realpath_cache_bucket *next;
226: } realpath_cache_bucket;
227:
228: typedef struct _virtual_cwd_globals {
229: cwd_state cwd;
230: long realpath_cache_size;
231: long realpath_cache_size_limit;
232: long realpath_cache_ttl;
233: realpath_cache_bucket *realpath_cache[1024];
234: } virtual_cwd_globals;
235:
236: #ifdef ZTS
237: extern ts_rsrc_id cwd_globals_id;
238: # define CWDG(v) TSRMG(cwd_globals_id, virtual_cwd_globals *, v)
239: #else
240: extern virtual_cwd_globals cwd_globals;
241: # define CWDG(v) (cwd_globals.v)
242: #endif
243:
244: CWD_API void realpath_cache_clean(TSRMLS_D);
245: CWD_API void realpath_cache_del(const char *path, int path_len TSRMLS_DC);
246: CWD_API realpath_cache_bucket* realpath_cache_lookup(const char *path, int path_len, time_t t TSRMLS_DC);
247: CWD_API int realpath_cache_size(TSRMLS_D);
248: CWD_API int realpath_cache_max_buckets(TSRMLS_D);
249: CWD_API realpath_cache_bucket** realpath_cache_get_buckets(TSRMLS_D);
250:
251: /* The actual macros to be used in programs using TSRM
252: * If the program defines VIRTUAL_DIR it will use the
253: * virtual_* functions
254: */
255:
256: #ifdef VIRTUAL_DIR
257:
258: #define VCWD_GETCWD(buff, size) virtual_getcwd(buff, size TSRMLS_CC)
259: #define VCWD_FOPEN(path, mode) virtual_fopen(path, mode TSRMLS_CC)
260: /* Because open() has two modes, we have to macros to replace it */
261: #define VCWD_OPEN(path, flags) virtual_open(path TSRMLS_CC, flags)
262: #define VCWD_OPEN_MODE(path, flags, mode) virtual_open(path TSRMLS_CC, flags, mode)
263: #define VCWD_CREAT(path, mode) virtual_creat(path, mode TSRMLS_CC)
264: #define VCWD_CHDIR(path) virtual_chdir(path TSRMLS_CC)
265: #define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, virtual_chdir TSRMLS_CC)
266: #define VCWD_GETWD(buf)
267: #define VCWD_REALPATH(path, real_path) virtual_realpath(path, real_path TSRMLS_CC)
268: #define VCWD_RENAME(oldname, newname) virtual_rename(oldname, newname TSRMLS_CC)
269: #define VCWD_STAT(path, buff) virtual_stat(path, buff TSRMLS_CC)
270: # define VCWD_LSTAT(path, buff) virtual_lstat(path, buff TSRMLS_CC)
271: #define VCWD_UNLINK(path) virtual_unlink(path TSRMLS_CC)
272: #define VCWD_MKDIR(pathname, mode) virtual_mkdir(pathname, mode TSRMLS_CC)
273: #define VCWD_RMDIR(pathname) virtual_rmdir(pathname TSRMLS_CC)
274: #define VCWD_OPENDIR(pathname) virtual_opendir(pathname TSRMLS_CC)
275: #define VCWD_POPEN(command, type) virtual_popen(command, type TSRMLS_CC)
276: #define VCWD_ACCESS(pathname, mode) virtual_access(pathname, mode TSRMLS_CC)
277: #if HAVE_UTIME
278: #define VCWD_UTIME(path, time) virtual_utime(path, time TSRMLS_CC)
279: #endif
280: #define VCWD_CHMOD(path, mode) virtual_chmod(path, mode TSRMLS_CC)
281: #if !defined(TSRM_WIN32) && !defined(NETWARE)
282: #define VCWD_CHOWN(path, owner, group) virtual_chown(path, owner, group, 0 TSRMLS_CC)
283: #if HAVE_LCHOWN
284: #define VCWD_LCHOWN(path, owner, group) virtual_chown(path, owner, group, 1 TSRMLS_CC)
285: #endif
286: #endif
287:
288: #else
289:
290: #define VCWD_GETCWD(buff, size) getcwd(buff, size)
291: #define VCWD_FOPEN(path, mode) fopen(path, mode)
292: #define VCWD_OPEN(path, flags) open(path, flags)
293: #define VCWD_OPEN_MODE(path, flags, mode) open(path, flags, mode)
294: #define VCWD_CREAT(path, mode) creat(path, mode)
295: /* rename on windows will fail if newname already exists.
296: MoveFileEx has to be used */
297: #if defined(TSRM_WIN32)
298: # define VCWD_RENAME(oldname, newname) (MoveFileEx(oldname, newname, MOVEFILE_REPLACE_EXISTING|MOVEFILE_COPY_ALLOWED) == 0 ? -1 : 0)
299: #else
300: # define VCWD_RENAME(oldname, newname) rename(oldname, newname)
301: #endif
302: #define VCWD_CHDIR(path) chdir(path)
303: #define VCWD_CHDIR_FILE(path) virtual_chdir_file(path, chdir)
304: #define VCWD_GETWD(buf) getwd(buf)
305: #define VCWD_STAT(path, buff) php_sys_stat(path, buff)
306: #define VCWD_LSTAT(path, buff) lstat(path, buff)
307: #define VCWD_UNLINK(path) unlink(path)
308: #define VCWD_MKDIR(pathname, mode) mkdir(pathname, mode)
309: #define VCWD_RMDIR(pathname) rmdir(pathname)
310: #define VCWD_OPENDIR(pathname) opendir(pathname)
311: #define VCWD_POPEN(command, type) popen(command, type)
312: #if defined(TSRM_WIN32)
313: #define VCWD_ACCESS(pathname, mode) tsrm_win32_access(pathname, mode TSRMLS_CC)
314: #else
315: #define VCWD_ACCESS(pathname, mode) access(pathname, mode)
316: #endif
317:
318: #define VCWD_REALPATH(path, real_path) tsrm_realpath(path, real_path TSRMLS_CC)
319:
320: #if HAVE_UTIME
321: # ifdef TSRM_WIN32
322: # define VCWD_UTIME(path, time) win32_utime(path, time)
323: # else
324: # define VCWD_UTIME(path, time) utime(path, time)
325: # endif
326: #endif
327:
328: #define VCWD_CHMOD(path, mode) chmod(path, mode)
329: #if !defined(TSRM_WIN32) && !defined(NETWARE)
330: #define VCWD_CHOWN(path, owner, group) chown(path, owner, group)
331: #if HAVE_LCHOWN
332: #define VCWD_LCHOWN(path, owner, group) lchown(path, owner, group)
333: #endif
334: #endif
335:
336: #endif
337:
338: #endif /* VIRTUAL_CWD_H */
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