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 | Author: Pierre A. Joye <pierre@php.net> |
16 +----------------------------------------------------------------------+
17 */
18
19 /* $Id$ */
20 #ifdef PHP_WIN32
21
22 #include "php.h"
23 #include "php_filestat.h"
24 #include "php_globals.h"
25
26 #include <WinBase.h>
27
28 #include <stdlib.h>
29
30 #include <string.h>
31 #if HAVE_PWD_H
32 #include "win32/pwd.h"
33 #endif
34
35 #if HAVE_GRP_H
36 #include "win32/grp.h"
37 #endif
38
39 #include <errno.h>
40 #include <ctype.h>
41
42 #include "php_link.h"
43 #include "php_string.h"
44
45 /*
46 TODO:
47 - Create php_readlink (done), php_link and php_symlink in win32/link.c
48 - Expose them (PHPAPI) so extensions developers can use them
49 - define link/readlink/symlink to their php_ equivalent and use them in ext/standart/link.c
50 - this file is then useless and we have a portable link API
51 */
52
53 #ifndef VOLUME_NAME_NT
54 #define VOLUME_NAME_NT 0x2
55 #endif
56
57 #ifndef VOLUME_NAME_DOS
58 #define VOLUME_NAME_DOS 0x0
59 #endif
60
61 /* {{{ proto string readlink(string filename)
62 Return the target of a symbolic link */
PHP_FUNCTION(readlink)63 PHP_FUNCTION(readlink)
64 {
65 char *link;
66 int link_len;
67 char target[MAXPATHLEN];
68
69 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p", &link, &link_len) == FAILURE) {
70 return;
71 }
72
73 if (OPENBASEDIR_CHECKPATH(link)) {
74 RETURN_FALSE;
75 }
76
77 if (php_sys_readlink(link, target, MAXPATHLEN) == -1) {
78 php_error_docref(NULL TSRMLS_CC, E_WARNING, "readlink failed to read the symbolic link (%s), error %d)", link, GetLastError());
79 RETURN_FALSE;
80 }
81 RETURN_STRING(target, 1);
82 }
83 /* }}} */
84
85 /* {{{ proto int linkinfo(string filename)
86 Returns the st_dev field of the UNIX C stat structure describing the link */
PHP_FUNCTION(linkinfo)87 PHP_FUNCTION(linkinfo)
88 {
89 char *link;
90 int link_len;
91 struct stat sb;
92 int ret;
93
94 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "p", &link, &link_len) == FAILURE) {
95 return;
96 }
97
98 ret = VCWD_STAT(link, &sb);
99 if (ret == -1) {
100 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
101 RETURN_LONG(-1L);
102 }
103
104 RETURN_LONG((long) sb.st_dev);
105 }
106 /* }}} */
107
108 /* {{{ proto int symlink(string target, string link)
109 Create a symbolic link */
PHP_FUNCTION(symlink)110 PHP_FUNCTION(symlink)
111 {
112 char *topath, *frompath;
113 int topath_len, frompath_len;
114 BOOLEAN ret;
115 char source_p[MAXPATHLEN];
116 char dest_p[MAXPATHLEN];
117 char dirname[MAXPATHLEN];
118 size_t len;
119 DWORD attr;
120 HINSTANCE kernel32;
121 typedef BOOLEAN (WINAPI *csla_func)(LPCSTR, LPCSTR, DWORD);
122 csla_func pCreateSymbolicLinkA;
123
124 kernel32 = LoadLibrary("kernel32.dll");
125
126 if (kernel32) {
127 pCreateSymbolicLinkA = (csla_func)GetProcAddress(kernel32, "CreateSymbolicLinkA");
128 if (pCreateSymbolicLinkA == NULL) {
129 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call CreateSymbolicLinkA");
130 RETURN_FALSE;
131 }
132 } else {
133 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Can't call get a handle on kernel32.dll");
134 RETURN_FALSE;
135 }
136
137 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "pp", &topath, &topath_len, &frompath, &frompath_len) == FAILURE) {
138 return;
139 }
140
141 if (!expand_filepath(frompath, source_p TSRMLS_CC)) {
142 php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
143 RETURN_FALSE;
144 }
145
146 memcpy(dirname, source_p, sizeof(source_p));
147 len = php_dirname(dirname, strlen(dirname));
148
149 if (!expand_filepath_ex(topath, dest_p, dirname, len TSRMLS_CC)) {
150 php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
151 RETURN_FALSE;
152 }
153
154 if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
155 php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
156 {
157 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to symlink to a URL");
158 RETURN_FALSE;
159 }
160
161 if (OPENBASEDIR_CHECKPATH(dest_p)) {
162 RETURN_FALSE;
163 }
164
165 if (OPENBASEDIR_CHECKPATH(source_p)) {
166 RETURN_FALSE;
167 }
168
169 if ((attr = GetFileAttributes(topath)) == INVALID_FILE_ATTRIBUTES) {
170 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Could not fetch file information(error %d)", GetLastError());
171 RETURN_FALSE;
172 }
173
174 /* For the source, an expanded path must be used (in ZTS an other thread could have changed the CWD).
175 * For the target the exact string given by the user must be used, relative or not, existing or not.
176 * The target is relative to the link itself, not to the CWD. */
177 ret = pCreateSymbolicLinkA(source_p, topath, (attr & FILE_ATTRIBUTE_DIRECTORY ? 1 : 0));
178
179 if (!ret) {
180 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Cannot create symlink, error code(%d)", GetLastError());
181 RETURN_FALSE;
182 }
183
184 RETURN_TRUE;
185 }
186 /* }}} */
187
188 /* {{{ proto int link(string target, string link)
189 Create a hard link */
PHP_FUNCTION(link)190 PHP_FUNCTION(link)
191 {
192 char *topath, *frompath;
193 int topath_len, frompath_len;
194 int ret;
195 char source_p[MAXPATHLEN];
196 char dest_p[MAXPATHLEN];
197
198 /*First argument to link function is the target and hence should go to frompath
199 Second argument to link function is the link itself and hence should go to topath */
200 if (zend_parse_parameters(ZEND_NUM_ARGS() TSRMLS_CC, "ss", &frompath, &frompath_len, &topath, &topath_len) == FAILURE) {
201 return;
202 }
203
204 if (!expand_filepath(frompath, source_p TSRMLS_CC) || !expand_filepath(topath, dest_p TSRMLS_CC)) {
205 php_error_docref(NULL TSRMLS_CC, E_WARNING, "No such file or directory");
206 RETURN_FALSE;
207 }
208
209 if (php_stream_locate_url_wrapper(source_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) ||
210 php_stream_locate_url_wrapper(dest_p, NULL, STREAM_LOCATE_WRAPPERS_ONLY TSRMLS_CC) )
211 {
212 php_error_docref(NULL TSRMLS_CC, E_WARNING, "Unable to link to a URL");
213 RETURN_FALSE;
214 }
215
216 if (OPENBASEDIR_CHECKPATH(source_p)) {
217 RETURN_FALSE;
218 }
219
220 if (OPENBASEDIR_CHECKPATH(dest_p)) {
221 RETURN_FALSE;
222 }
223
224 #ifndef ZTS
225 ret = CreateHardLinkA(topath, frompath, NULL);
226 #else
227 ret = CreateHardLinkA(dest_p, source_p, NULL);
228 #endif
229
230 if (ret == 0) {
231 php_error_docref(NULL TSRMLS_CC, E_WARNING, "%s", strerror(errno));
232 RETURN_FALSE;
233 }
234
235 RETURN_TRUE;
236 }
237 /* }}} */
238
239 #endif
240
241 /*
242 * Local variables:
243 * tab-width: 4
244 * c-basic-offset: 4
245 * End:
246 * vim600: noet sw=4 ts=4 fdm=marker
247 * vim<600: noet sw=4 ts=4
248 */
249
