1: /*
2: +----------------------------------------------------------------------+
3: | PHP Version 5 |
4: +----------------------------------------------------------------------+
5: | Copyright (c) 1997-2012 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: Zeev Suraski <zeev@zend.com> |
16: +----------------------------------------------------------------------+
17: */
18:
19: /* $Id: php_open_temporary_file.c,v 1.1.1.2 2012/05/29 12:34:35 misho Exp $ */
20:
21: #include "php.h"
22:
23: #include <errno.h>
24: #include <sys/types.h>
25: #include <sys/stat.h>
26: #include <fcntl.h>
27:
28: #ifdef PHP_WIN32
29: #define O_RDONLY _O_RDONLY
30: #include "win32/param.h"
31: #include "win32/winutil.h"
32: #elif defined(NETWARE)
33: #ifdef USE_WINSOCK
34: #include <novsock2.h>
35: #else
36: #include <sys/socket.h>
37: #endif
38: #include <sys/param.h>
39: #else
40: #include <sys/param.h>
41: #include <sys/socket.h>
42: #include <netinet/in.h>
43: #include <netdb.h>
44: #if HAVE_ARPA_INET_H
45: #include <arpa/inet.h>
46: #endif
47: #endif
48: #ifdef HAVE_SYS_TIME_H
49: #include <sys/time.h>
50: #endif
51:
52: #ifdef HAVE_SYS_FILE_H
53: #include <sys/file.h>
54: #endif
55:
56: #if !defined(P_tmpdir)
57: #define P_tmpdir ""
58: #endif
59:
60: /* {{{ php_do_open_temporary_file */
61:
62: /* Loosely based on a tempnam() implementation by UCLA */
63:
64: /*
65: * Copyright (c) 1988, 1993
66: * The Regents of the University of California. All rights reserved.
67: *
68: * Redistribution and use in source and binary forms, with or without
69: * modification, are permitted provided that the following conditions
70: * are met:
71: * 1. Redistributions of source code must retain the above copyright
72: * notice, this list of conditions and the following disclaimer.
73: * 2. Redistributions in binary form must reproduce the above copyright
74: * notice, this list of conditions and the following disclaimer in the
75: * documentation and/or other materials provided with the distribution.
76: * 3. All advertising materials mentioning features or use of this software
77: * must display the following acknowledgement:
78: * This product includes software developed by the University of
79: * California, Berkeley and its contributors.
80: * 4. Neither the name of the University nor the names of its contributors
81: * may be used to endorse or promote products derived from this software
82: * without specific prior written permission.
83: *
84: * THIS SOFTWARE IS PROVIDED BY THE REGENTS AND CONTRIBUTORS ``AS IS'' AND
85: * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
86: * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
87: * ARE DISCLAIMED. IN NO EVENT SHALL THE REGENTS OR CONTRIBUTORS BE LIABLE
88: * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
89: * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
90: * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
91: * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
92: * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
93: * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
94: * SUCH DAMAGE.
95: */
96:
97: static int php_do_open_temporary_file(const char *path, const char *pfx, char **opened_path_p TSRMLS_DC)
98: {
99: char *trailing_slash;
100: char *opened_path;
101: char cwd[MAXPATHLEN];
102: cwd_state new_state;
103: int fd = -1;
104: #ifndef HAVE_MKSTEMP
105: int open_flags = O_CREAT | O_TRUNC | O_RDWR
106: #ifdef PHP_WIN32
107: | _O_BINARY
108: #endif
109: ;
110: #endif
111:
112: if (!path || !path[0]) {
113: return -1;
114: }
115:
116: #ifdef PHP_WIN32
117: if (!php_win32_check_trailing_space(pfx, (const int)strlen(pfx))) {
118: SetLastError(ERROR_INVALID_NAME);
119: return -1;
120: }
121: #endif
122:
123: if (!VCWD_GETCWD(cwd, MAXPATHLEN)) {
124: cwd[0] = '\0';
125: }
126:
127: new_state.cwd = strdup(cwd);
128: new_state.cwd_length = strlen(cwd);
129:
130: if (virtual_file_ex(&new_state, path, NULL, CWD_REALPATH TSRMLS_CC)) {
131: free(new_state.cwd);
132: return -1;
133: }
134:
135: if (IS_SLASH(new_state.cwd[new_state.cwd_length - 1])) {
136: trailing_slash = "";
137: } else {
138: trailing_slash = "/";
139: }
140:
141: if (spprintf(&opened_path, 0, "%s%s%sXXXXXX", new_state.cwd, trailing_slash, pfx) >= MAXPATHLEN) {
142: efree(opened_path);
143: free(new_state.cwd);
144: return -1;
145: }
146:
147: #ifdef PHP_WIN32
148:
149: if (GetTempFileName(new_state.cwd, pfx, 0, opened_path)) {
150: /* Some versions of windows set the temp file to be read-only,
151: * which means that opening it will fail... */
152: if (VCWD_CHMOD(opened_path, 0600)) {
153: efree(opened_path);
154: free(new_state.cwd);
155: return -1;
156: }
157: fd = VCWD_OPEN_MODE(opened_path, open_flags, 0600);
158: }
159:
160: #elif defined(HAVE_MKSTEMP)
161: fd = mkstemp(opened_path);
162: #else
163: if (mktemp(opened_path)) {
164: fd = VCWD_OPEN(opened_path, open_flags);
165: }
166: #endif
167:
168: if (fd == -1 || !opened_path_p) {
169: efree(opened_path);
170: } else {
171: *opened_path_p = opened_path;
172: }
173: free(new_state.cwd);
174: return fd;
175: }
176: /* }}} */
177:
178: /* Cache the chosen temporary directory. */
179: static char* temporary_directory;
180:
181: PHPAPI void php_shutdown_temporary_directory(void)
182: {
183: if (temporary_directory) {
184: free(temporary_directory);
185: temporary_directory = NULL;
186: }
187: }
188:
189: /*
190: * Determine where to place temporary files.
191: */
192: PHPAPI const char* php_get_temporary_directory(void)
193: {
194: /* Did we determine the temporary directory already? */
195: if (temporary_directory) {
196: return temporary_directory;
197: }
198:
199: #ifdef PHP_WIN32
200: /* We can't count on the environment variables TEMP or TMP,
201: * and so must make the Win32 API call to get the default
202: * directory for temporary files. Note this call checks
203: * the environment values TMP and TEMP (in order) first.
204: */
205: {
206: char sTemp[MAX_PATH];
207: DWORD len = GetTempPath(sizeof(sTemp),sTemp);
208: assert(0 < len); /* should *never* fail! */
209: if (sTemp[len - 1] == DEFAULT_SLASH) {
210: temporary_directory = zend_strndup(sTemp, len - 1);
211: } else {
212: temporary_directory = zend_strndup(sTemp, len);
213: }
214: return temporary_directory;
215: }
216: #else
217: /* On Unix use the (usual) TMPDIR environment variable. */
218: {
219: char* s = getenv("TMPDIR");
220: if (s && *s) {
221: int len = strlen(s);
222:
223: if (s[len - 1] == DEFAULT_SLASH) {
224: temporary_directory = zend_strndup(s, len - 1);
225: } else {
226: temporary_directory = zend_strndup(s, len);
227: }
228:
229: return temporary_directory;
230: }
231: }
232: #ifdef P_tmpdir
233: /* Use the standard default temporary directory. */
234: if (P_tmpdir) {
235: temporary_directory = strdup(P_tmpdir);
236: return temporary_directory;
237: }
238: #endif
239: /* Shouldn't ever(!) end up here ... last ditch default. */
240: temporary_directory = strdup("/tmp");
241: return temporary_directory;
242: #endif
243: }
244:
245: /* {{{ php_open_temporary_file
246: *
247: * Unlike tempnam(), the supplied dir argument takes precedence
248: * over the TMPDIR environment variable
249: * This function should do its best to return a file pointer to a newly created
250: * unique file, on every platform.
251: */
252: PHPAPI int php_open_temporary_fd_ex(const char *dir, const char *pfx, char **opened_path_p, zend_bool open_basedir_check TSRMLS_DC)
253: {
254: int fd;
255: const char *temp_dir;
256:
257: if (!pfx) {
258: pfx = "tmp.";
259: }
260: if (opened_path_p) {
261: *opened_path_p = NULL;
262: }
263:
264: if (!dir || *dir == '\0') {
265: def_tmp:
266: temp_dir = php_get_temporary_directory();
267:
268: if (temp_dir && *temp_dir != '\0' && (!open_basedir_check || !php_check_open_basedir(temp_dir TSRMLS_CC))) {
269: return php_do_open_temporary_file(temp_dir, pfx, opened_path_p TSRMLS_CC);
270: } else {
271: return -1;
272: }
273: }
274:
275: /* Try the directory given as parameter. */
276: fd = php_do_open_temporary_file(dir, pfx, opened_path_p TSRMLS_CC);
277: if (fd == -1) {
278: /* Use default temporary directory. */
279: goto def_tmp;
280: }
281: return fd;
282: }
283:
284: PHPAPI int php_open_temporary_fd(const char *dir, const char *pfx, char **opened_path_p TSRMLS_DC)
285: {
286: return php_open_temporary_fd_ex(dir, pfx, opened_path_p, 0 TSRMLS_CC);
287: }
288:
289: PHPAPI FILE *php_open_temporary_file(const char *dir, const char *pfx, char **opened_path_p TSRMLS_DC)
290: {
291: FILE *fp;
292: int fd = php_open_temporary_fd(dir, pfx, opened_path_p TSRMLS_CC);
293:
294: if (fd == -1) {
295: return NULL;
296: }
297:
298: fp = fdopen(fd, "r+b");
299: if (fp == NULL) {
300: close(fd);
301: }
302:
303: return fp;
304: }
305: /* }}} */
306:
307: /*
308: * Local variables:
309: * tab-width: 4
310: * c-basic-offset: 4
311: * End:
312: * vim600: sw=4 ts=4 fdm=marker
313: * vim<600: sw=4 ts=4
314: */
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