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
|
<?php
/**
* PHPExcel
*
* Copyright (c) 2006 - 2014 PHPExcel
*
* This library is free software; you can redistribute it and/or
* modify it under the terms of the GNU Lesser General Public
* License as published by the Free Software Foundation; either
* version 2.1 of the License, or (at your option) any later version.
*
* This library is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this library; if not, write to the Free Software
* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA
*
* @category PHPExcel
* @package PHPExcel_Shared
* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
* @license http://www.gnu.org/licenses/old-licenses/lgpl-2.1.txt LGPL
* @version ##VERSION##, ##DATE##
*/
/**
* PHPExcel_Shared_File
*
* @category PHPExcel
* @package PHPExcel_Shared
* @copyright Copyright (c) 2006 - 2014 PHPExcel (http://www.codeplex.com/PHPExcel)
*/
class PHPExcel_Shared_File
{
/*
* Use Temp or File Upload Temp for temporary files
*
* @protected
* @var boolean
*/
protected static $_useUploadTempDirectory = FALSE;
/**
* Set the flag indicating whether the File Upload Temp directory should be used for temporary files
*
* @param boolean $useUploadTempDir Use File Upload Temporary directory (true or false)
*/
public static function setUseUploadTempDirectory($useUploadTempDir = FALSE) {
self::$_useUploadTempDirectory = (boolean) $useUploadTempDir;
} // function setUseUploadTempDirectory()
/**
* Get the flag indicating whether the File Upload Temp directory should be used for temporary files
*
* @return boolean Use File Upload Temporary directory (true or false)
*/
public static function getUseUploadTempDirectory() {
return self::$_useUploadTempDirectory;
} // function getUseUploadTempDirectory()
/**
* Verify if a file exists
*
* @param string $pFilename Filename
* @return bool
*/
public static function file_exists($pFilename) {
// Sick construction, but it seems that
// file_exists returns strange values when
// doing the original file_exists on ZIP archives...
if ( strtolower(substr($pFilename, 0, 3)) == 'zip' ) {
// Open ZIP file and verify if the file exists
$zipFile = substr($pFilename, 6, strpos($pFilename, '#') - 6);
$archiveFile = substr($pFilename, strpos($pFilename, '#') + 1);
$zip = new ZipArchive();
if ($zip->open($zipFile) === true) {
$returnValue = ($zip->getFromName($archiveFile) !== false);
$zip->close();
return $returnValue;
} else {
return false;
}
} else {
// Regular file_exists
return file_exists($pFilename);
}
}
/**
* Returns canonicalized absolute pathname, also for ZIP archives
*
* @param string $pFilename
* @return string
*/
public static function realpath($pFilename) {
// Returnvalue
$returnValue = '';
// Try using realpath()
if (file_exists($pFilename)) {
$returnValue = realpath($pFilename);
}
// Found something?
if ($returnValue == '' || ($returnValue === NULL)) {
$pathArray = explode('/' , $pFilename);
while(in_array('..', $pathArray) && $pathArray[0] != '..') {
for ($i = 0; $i < count($pathArray); ++$i) {
if ($pathArray[$i] == '..' && $i > 0) {
unset($pathArray[$i]);
unset($pathArray[$i - 1]);
break;
}
}
}
$returnValue = implode('/', $pathArray);
}
// Return
return $returnValue;
}
/**
* Get the systems temporary directory.
*
* @return string
*/
public static function sys_get_temp_dir()
{
if (self::$_useUploadTempDirectory) {
// use upload-directory when defined to allow running on environments having very restricted
// open_basedir configs
if (ini_get('upload_tmp_dir') !== FALSE) {
if ($temp = ini_get('upload_tmp_dir')) {
if (file_exists($temp))
return realpath($temp);
}
}
}
// sys_get_temp_dir is only available since PHP 5.2.1
// http://php.net/manual/en/function.sys-get-temp-dir.php#94119
if ( !function_exists('sys_get_temp_dir')) {
if ($temp = getenv('TMP') ) {
if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
}
if ($temp = getenv('TEMP') ) {
if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
}
if ($temp = getenv('TMPDIR') ) {
if ((!empty($temp)) && (file_exists($temp))) { return realpath($temp); }
}
// trick for creating a file in system's temporary dir
// without knowing the path of the system's temporary dir
$temp = tempnam(__FILE__, '');
if (file_exists($temp)) {
unlink($temp);
return realpath(dirname($temp));
}
return null;
}
// use ordinary built-in PHP function
// There should be no problem with the 5.2.4 Suhosin realpath() bug, because this line should only
// be called if we're running 5.2.1 or earlier
return realpath(sys_get_temp_dir());
}
}
|