Verzeichnisstruktur phpBB-3.1.0
- Veröffentlicht
- 27.10.2014
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base.php
001 <?php
002 /**
003 *
004 * This file is part of the phpBB Forum Software package.
005 *
006 * @copyright (c) phpBB Limited <https://www.phpbb.com>
007 * @license GNU General Public License, version 2 (GPL-2.0)
008 *
009 * For full copyright and license information, please see
010 * the docs/CREDITS.txt file.
011 *
012 */
013
014 namespace phpbb\cache\driver;
015
016 abstract class base implements \phpbb\cache\driver\driver_interface
017 {
018 var $vars = array();
019 var $is_modified = false;
020
021 var $sql_rowset = array();
022 var $sql_row_pointer = array();
023 var $cache_dir = '';
024
025 /**
026 * {@inheritDoc}
027 */
028 function purge()
029 {
030 // Purge all phpbb cache files
031 try
032 {
033 $iterator = new \DirectoryIterator($this->cache_dir);
034 }
035 catch (\Exception $e)
036 {
037 return;
038 }
039
040 foreach ($iterator as $fileInfo)
041 {
042 if ($fileInfo->isDot())
043 {
044 continue;
045 }
046 $filename = $fileInfo->getFilename();
047 if ($fileInfo->isDir())
048 {
049 $this->remove_dir($fileInfo->getPathname());
050 }
051 else if (strpos($filename, 'container_') === 0 ||
052 strpos($filename, 'url_matcher') === 0 ||
053 strpos($filename, 'sql_') === 0 ||
054 strpos($filename, 'data_') === 0)
055 {
056 $this->remove_file($fileInfo->getPathname());
057 }
058 }
059
060 unset($this->vars);
061 unset($this->sql_rowset);
062 unset($this->sql_row_pointer);
063
064 $this->vars = array();
065 $this->sql_rowset = array();
066 $this->sql_row_pointer = array();
067
068 $this->is_modified = false;
069 }
070
071 /**
072 * {@inheritDoc}
073 */
074 function unload()
075 {
076 $this->save();
077 unset($this->vars);
078 unset($this->sql_rowset);
079 unset($this->sql_row_pointer);
080
081 $this->vars = array();
082 $this->sql_rowset = array();
083 $this->sql_row_pointer = array();
084 }
085
086 /**
087 * {@inheritDoc}
088 */
089 function sql_load($query)
090 {
091 // Remove extra spaces and tabs
092 $query = preg_replace('/[\n\r\s\t]+/', ' ', $query);
093
094 if (($rowset = $this->_read('sql_' . md5($query))) === false)
095 {
096 return false;
097 }
098
099 $query_id = sizeof($this->sql_rowset);
100 $this->sql_rowset[$query_id] = $rowset;
101 $this->sql_row_pointer[$query_id] = 0;
102
103 return $query_id;
104 }
105
106 /**
107 * {@inheritDoc}
108 */
109 function sql_exists($query_id)
110 {
111 return isset($this->sql_rowset[$query_id]);
112 }
113
114 /**
115 * {@inheritDoc}
116 */
117 function sql_fetchrow($query_id)
118 {
119 if ($this->sql_row_pointer[$query_id] < sizeof($this->sql_rowset[$query_id]))
120 {
121 return $this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]++];
122 }
123
124 return false;
125 }
126
127 /**
128 * {@inheritDoc}
129 */
130 function sql_fetchfield($query_id, $field)
131 {
132 if ($this->sql_row_pointer[$query_id] < sizeof($this->sql_rowset[$query_id]))
133 {
134 return (isset($this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]][$field])) ? $this->sql_rowset[$query_id][$this->sql_row_pointer[$query_id]++][$field] : false;
135 }
136
137 return false;
138 }
139
140 /**
141 * {@inheritDoc}
142 */
143 function sql_rowseek($rownum, $query_id)
144 {
145 if ($rownum >= sizeof($this->sql_rowset[$query_id]))
146 {
147 return false;
148 }
149
150 $this->sql_row_pointer[$query_id] = $rownum;
151 return true;
152 }
153
154 /**
155 * {@inheritDoc}
156 */
157 function sql_freeresult($query_id)
158 {
159 if (!isset($this->sql_rowset[$query_id]))
160 {
161 return false;
162 }
163
164 unset($this->sql_rowset[$query_id]);
165 unset($this->sql_row_pointer[$query_id]);
166
167 return true;
168 }
169
170 /**
171 * Removes/unlinks file
172 *
173 * @param string $filename Filename to remove
174 * @param bool $check Check file permissions
175 * @return bool True if the file was successfully removed, otherwise false
176 */
177 function remove_file($filename, $check = false)
178 {
179 if (!function_exists('phpbb_is_writable'))
180 {
181 global $phpbb_root_path, $phpEx;
182 include($phpbb_root_path . 'includes/functions.' . $phpEx);
183 }
184
185 if ($check && !phpbb_is_writable($this->cache_dir))
186 {
187 // E_USER_ERROR - not using language entry - intended.
188 trigger_error('Unable to remove files within ' . $this->cache_dir . '. Please check directory permissions.', E_USER_ERROR);
189 }
190
191 return @unlink($filename);
192 }
193
194 /**
195 * Remove directory
196 *
197 * @param string $dir Directory to remove
198 *
199 * @return null
200 */
201 protected function remove_dir($dir)
202 {
203 try
204 {
205 $iterator = new \DirectoryIterator($dir);
206 }
207 catch (\Exception $e)
208 {
209 return;
210 }
211
212 foreach ($iterator as $fileInfo)
213 {
214 if ($fileInfo->isDot())
215 {
216 continue;
217 }
218
219 if ($fileInfo->isDir())
220 {
221 $this->remove_dir($fileInfo->getPathname());
222 }
223 else
224 {
225 $this->remove_file($fileInfo->getPathname());
226 }
227 }
228
229 @rmdir($dir);
230 }
231 }
232