2 /************************************************************************
3 * MXChange v0.2.1 Start: 10/11/2003 *
4 * =============== Last change: 10/11/2003 *
6 * -------------------------------------------------------------------- *
7 * File : admins_functions.php *
8 * -------------------------------------------------------------------- *
9 * Short description : Functions for the admins extension *
10 * -------------------------------------------------------------------- *
11 * Kurzbeschreibung : Funktionen fuer die admins-Erweiterung *
12 * -------------------------------------------------------------------- *
14 * -------------------------------------------------------------------- *
15 * Copyright (c) 2003 - 2008 by Roland Haeder *
16 * For more information visit: http://www.mxchange.org *
18 * This program is free software; you can redistribute it and/or modify *
19 * it under the terms of the GNU General Public License as published by *
20 * the Free Software Foundation; either version 2 of the License, or *
21 * (at your option) any later version. *
23 * This program is distributed in the hope that it will be useful, *
24 * but WITHOUT ANY WARRANTY; without even the implied warranty of *
25 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the *
26 * GNU General Public License for more details. *
28 * You should have received a copy of the GNU General Public License *
29 * along with this program; if not, write to the Free Software *
30 * Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, *
32 ************************************************************************/
34 // Some security stuff...
35 if (!defined('__SECURITY')) {
36 $INC = substr(dirname(__FILE__), 0, strpos(dirname(__FILE__), "/inc") + 4) . "/security.php";
44 var $update_interval = 0;
49 var $cache_pointer = false;
51 var $cache_version = "";
54 function mxchange_cache($interval, $path, $tested) {
55 // Remember interval in class
56 $this->update_interval=$interval;
59 $this->cache_path=$path;
61 // Check if path exists
62 if ((is_dir($path)) && (!$tested)) {
63 // Check if we can create a file inside the path
64 @touch($path."dummy.tmp", 'w');
65 if (FILE_READABLE($path."dummy.tmp")) {
66 // Yes, we can do. So let's remove it
67 @unlink($path."dummy.tmp");
69 // Is there a .htaccess file?
70 if (FILE_READABLE($path.".htaccess")) {
71 // Update database that we have tested it
72 UPDATE_CONFIG("cache_tested", 1);
77 // Stop! Set a .htaccess file first
78 $this->ret="htaccess";
83 // System already tested
88 // Something goes wrong here!
93 function cache_file($file, $ignore_ctime=false) {
95 // Construct FQFN (full qualified file name)
96 $inc = $this->cache_path.$file.".cache";
98 // Rember it + filename in class
99 $this->cache_inc = $inc;
101 // Check if file exists
102 $status = (FILE_READABLE($inc) && (is_writeable($inc)));
104 // Yes, it does. So let's get it's last changed date/time
105 $ctime = filectime($inc);
107 // No, it doesn't. Zero date/time
111 // Remember change date/time in class
112 $this->cache_ctime = $ctime;
114 // Is the cache file outdated?
115 if (((time() - $ctime) >= $this->update_interval) && (!$ignore_ctime)) {
116 // Ok, we need an update!
124 function cache_init($array) {
125 // This will destory an existing cache file!
126 if ($this->ret == "done") {
128 if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
129 $fp = @fopen($this->cache_inc, 'w') or mxchange_die("Cannot write to cache ".$this->cache_inc." !");
131 // Begin of cache file
132 fwrite($fp, "\$ARRAY = \"".$array."\";\n\n");
134 // Remember file pointer
135 $this->cache_pointer = $fp;
137 // Cannot create file
138 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
142 function add_row ($data) {
145 if (is_resource($this->cache_pointer)) {
146 // Write every array element to cache file
147 foreach ($data as $k => $v) {
148 // Write global cache array for immediate access
149 if ((substr($k, 0, 4) == "ext_") && (isset($data['ext_name'])) && (isset($data['ext_id']))) {
150 if ($k != "ext_name") {
151 $cacheArray['extensions'][$k][$data['ext_name']] = $v;
153 $cacheArray['extensions'][$k][$data['ext_id']] = $v;
155 if (($k == "ext_keep") && ($v == "Y")) {
156 $cacheArray['active_extensions'][$data['ext_name']] = $v;
158 } elseif (is_array($v)) {
159 // Serialize and BASE64-encode the array
160 $v = base64_encode(serialize($v));
163 // Write cache line to file
164 @fwrite($this->cache_pointer, $this->add_raw_row($k, $v));
167 // Cannot create file
168 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
172 function cache_close()
174 // Quit function when no pointer is set
175 if (empty($this->cache_pointer)) return;
176 if ($this->cache_pointer)
178 // Close file add destroy handler
179 @fclose($this->cache_pointer);
182 if (FILE_READABLE($this->cache_inc)) @chmod($this->cache_inc, 0666);
185 unset($this->cache_pointer);
189 // Cannot create file
190 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
194 function cache_load() {
195 // Is the cache file there?
196 if (FILE_READABLE($this->cache_inc)) {
197 // Prepare temporary array
199 $cache_version = null;
202 $this->cache_data = implode("", file($this->cache_inc));
204 // Execute cache file
205 eval($this->cache_data);
207 if (is_array($data)) {
209 $this->cache_data = $data;
211 // Cache version found?
212 if ((isset($cache_version)) && (is_array($cache_version))) {
213 // Remember it as well...
214 $this->cache_version = $cache_version;
218 return $this->cache_data;
220 // Cache problem detected!
221 $this->cache_destroy();
224 // Cache file not found or not readable
225 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_LOAD_1.$this->cache_inc.CACHE_CANNOT_LOAD_2);
229 function cache_destroy()
231 if (FILE_READABLE($this->cache_inc))
233 // Remove cache file from system
234 @unlink($this->cache_inc);
235 if (!FILE_READABLE($this->cache_inc))
237 // Close cache automatically (we don't need it anymore!)
238 $this->cache_close();
243 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_UNLINK_1.$this->cache_inc.CACHE_CANNOT_UNLINK_2);
249 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_CANNOT_UNLINK_1.$this->cache_inc.CACHE_CANNOT_UNLINK_2);
253 function cache_remove($search, $data, $array)
256 if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc))) {
257 // Load cache into dummy array
258 $dummy = $this->cache_load();
260 // Search for key in array
261 $key = array_search($data, $dummy[$search]);
263 // Key (hopefully) found?
264 foreach ($array as $a) {
265 // So we can remove all elements as requested
266 unset($dummy[$a][$key]);
269 // Flush array to cache file
270 $fp = fopen($this->cache_inc, 'w');
271 fwrite($fp, "\$ARRAY = \"".$ARRAY."\";\n");
272 foreach ($dummy as $k => $v) {
274 // Multi line(s) found
276 foreach($v as $k2 => $v2) {
277 // Put every array element in a row...
278 $LINE .= $this->add_raw_row($k, $v2);
282 $LINE = $this->add_raw_row($k, $v);
293 // Cannot write to cache!
294 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
298 function cache_replace($search, $replace, $search_key, $array)
301 if ((FILE_READABLE($this->cache_inc)) && (is_writeable($this->cache_inc)))
303 // Load cache into dummy array
304 $dummy = $this->cache_load();
306 // Check if $dummy is valid (prevents some errors)
307 if ((is_array($dummy)) && (isset($dummy[$search])) && (is_array($dummy[$search]))) {
308 // Search for key in array
309 $key_found = array_key_exists($search_key, $dummy[$search]);
310 if ($key_found == true) {
312 // Key (hopefully) found?
313 foreach ($dummy as $a => $v) {
314 // So we can update all entries
317 $dummy[$a][$search_key] = $replace;
321 // Flush array to cache file
322 $fp = fopen($this->cache_inc, 'w');
323 fwrite($fp, "\$dummy = \"".$ARRAY."\";\n");
324 foreach ($dummy as $k => $v) {
326 // Multi line(s) found
328 foreach($v as $k2 => $v2) {
329 // Put every array element in a row...
330 $LINE .= $this->add_raw_row($k, $v2);
334 $LINE = $this->add_raw_row($k, $v);
346 // Cannot write to cache!
347 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
351 function store_extension_version ($ext_name) {
352 // Valid cache pointer?
353 if (is_resource($this->cache_pointer)) {
354 // Get extension version
355 $ext_ver = GET_EXT_VERSION($ext_name);
357 // Write cache line to file
358 @fwrite($this->cache_pointer, "\$cache_version['".$ext_name."'] = \"".$ext_ver."\";\n");
360 // Cannot create file
361 ADD_FATAL(__FILE__."(".__LINE__."): ".CACHE_PROBLEMS_DETECTED);
365 function ext_version_matches ($ext_name) {
366 // Load cache (dummy)
369 // Get extension version
370 $ext_ver = GET_EXT_VERSION($ext_name);
372 //* DEBUG: */ echo __METHOD__.": ext_name={$ext_name},ext_ver={$ext_ver},cache_version={$this->cache_version}<br />\n";
374 return ((isset($this->cache_version[$ext_name])) && ($this->cache_version[$ext_name] == $ext_ver));
377 function add_raw_row ($key, $value) {
381 // String or non-string? ;-)
382 if (is_string($value)) {
384 $line = "\$data['".$key."'][] = \"".$value."\";\n";
387 $line = "\$data['".$key."'][] = ".$value.";\n";