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authorMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
committerMike Macgirvin <mike@macgirvin.com>2010-09-08 20:14:17 -0700
commitffb1997902facb36b78a7cfa522f41f2b3d71cda (patch)
treee9fe47acf26c5fd2c742677f2610b60d3008eb26 /library/HTMLPurifier/DefinitionCache
parentb49858b038a0a05bbe7685929e88071d0e125538 (diff)
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mistpark 2.0 infrasturcture lands
Diffstat (limited to 'library/HTMLPurifier/DefinitionCache')
-rw-r--r--library/HTMLPurifier/DefinitionCache/Decorator.php62
-rw-r--r--library/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php43
-rw-r--r--library/HTMLPurifier/DefinitionCache/Decorator/Memory.php46
-rw-r--r--library/HTMLPurifier/DefinitionCache/Decorator/Template.php.in47
-rw-r--r--library/HTMLPurifier/DefinitionCache/Null.php39
-rw-r--r--library/HTMLPurifier/DefinitionCache/Serializer.php172
-rwxr-xr-xlibrary/HTMLPurifier/DefinitionCache/Serializer/README3
7 files changed, 412 insertions, 0 deletions
diff --git a/library/HTMLPurifier/DefinitionCache/Decorator.php b/library/HTMLPurifier/DefinitionCache/Decorator.php
new file mode 100644
index 000000000..b0fb6d0cd
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Decorator.php
@@ -0,0 +1,62 @@
+<?php
+
+class HTMLPurifier_DefinitionCache_Decorator extends HTMLPurifier_DefinitionCache
+{
+
+ /**
+ * Cache object we are decorating
+ */
+ public $cache;
+
+ public function __construct() {}
+
+ /**
+ * Lazy decorator function
+ * @param $cache Reference to cache object to decorate
+ */
+ public function decorate(&$cache) {
+ $decorator = $this->copy();
+ // reference is necessary for mocks in PHP 4
+ $decorator->cache =& $cache;
+ $decorator->type = $cache->type;
+ return $decorator;
+ }
+
+ /**
+ * Cross-compatible clone substitute
+ */
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator();
+ }
+
+ public function add($def, $config) {
+ return $this->cache->add($def, $config);
+ }
+
+ public function set($def, $config) {
+ return $this->cache->set($def, $config);
+ }
+
+ public function replace($def, $config) {
+ return $this->cache->replace($def, $config);
+ }
+
+ public function get($config) {
+ return $this->cache->get($config);
+ }
+
+ public function remove($config) {
+ return $this->cache->remove($config);
+ }
+
+ public function flush($config) {
+ return $this->cache->flush($config);
+ }
+
+ public function cleanup($config) {
+ return $this->cache->cleanup($config);
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php b/library/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php
new file mode 100644
index 000000000..d4cc35c4b
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Decorator/Cleanup.php
@@ -0,0 +1,43 @@
+<?php
+
+/**
+ * Definition cache decorator class that cleans up the cache
+ * whenever there is a cache miss.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Cleanup extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ public $name = 'Cleanup';
+
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator_Cleanup();
+ }
+
+ public function add($def, $config) {
+ $status = parent::add($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function set($def, $config) {
+ $status = parent::set($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function replace($def, $config) {
+ $status = parent::replace($def, $config);
+ if (!$status) parent::cleanup($config);
+ return $status;
+ }
+
+ public function get($config) {
+ $ret = parent::get($config);
+ if (!$ret) parent::cleanup($config);
+ return $ret;
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Decorator/Memory.php b/library/HTMLPurifier/DefinitionCache/Decorator/Memory.php
new file mode 100644
index 000000000..18f16d32b
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Decorator/Memory.php
@@ -0,0 +1,46 @@
+<?php
+
+/**
+ * Definition cache decorator class that saves all cache retrievals
+ * to PHP's memory; good for unit tests or circumstances where
+ * there are lots of configuration objects floating around.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Memory extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ protected $definitions;
+ public $name = 'Memory';
+
+ public function copy() {
+ return new HTMLPurifier_DefinitionCache_Decorator_Memory();
+ }
+
+ public function add($def, $config) {
+ $status = parent::add($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function set($def, $config) {
+ $status = parent::set($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function replace($def, $config) {
+ $status = parent::replace($def, $config);
+ if ($status) $this->definitions[$this->generateKey($config)] = $def;
+ return $status;
+ }
+
+ public function get($config) {
+ $key = $this->generateKey($config);
+ if (isset($this->definitions[$key])) return $this->definitions[$key];
+ $this->definitions[$key] = parent::get($config);
+ return $this->definitions[$key];
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Decorator/Template.php.in b/library/HTMLPurifier/DefinitionCache/Decorator/Template.php.in
new file mode 100644
index 000000000..21a8fcfda
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Decorator/Template.php.in
@@ -0,0 +1,47 @@
+<?php
+
+require_once 'HTMLPurifier/DefinitionCache/Decorator.php';
+
+/**
+ * Definition cache decorator template.
+ */
+class HTMLPurifier_DefinitionCache_Decorator_Template extends
+ HTMLPurifier_DefinitionCache_Decorator
+{
+
+ var $name = 'Template'; // replace this
+
+ function copy() {
+ // replace class name with yours
+ return new HTMLPurifier_DefinitionCache_Decorator_Template();
+ }
+
+ // remove methods you don't need
+
+ function add($def, $config) {
+ return parent::add($def, $config);
+ }
+
+ function set($def, $config) {
+ return parent::set($def, $config);
+ }
+
+ function replace($def, $config) {
+ return parent::replace($def, $config);
+ }
+
+ function get($config) {
+ return parent::get($config);
+ }
+
+ function flush() {
+ return parent::flush();
+ }
+
+ function cleanup($config) {
+ return parent::cleanup($config);
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Null.php b/library/HTMLPurifier/DefinitionCache/Null.php
new file mode 100644
index 000000000..41d97e734
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Null.php
@@ -0,0 +1,39 @@
+<?php
+
+/**
+ * Null cache object to use when no caching is on.
+ */
+class HTMLPurifier_DefinitionCache_Null extends HTMLPurifier_DefinitionCache
+{
+
+ public function add($def, $config) {
+ return false;
+ }
+
+ public function set($def, $config) {
+ return false;
+ }
+
+ public function replace($def, $config) {
+ return false;
+ }
+
+ public function remove($config) {
+ return false;
+ }
+
+ public function get($config) {
+ return false;
+ }
+
+ public function flush($config) {
+ return false;
+ }
+
+ public function cleanup($config) {
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Serializer.php b/library/HTMLPurifier/DefinitionCache/Serializer.php
new file mode 100644
index 000000000..7a6aa93f0
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Serializer.php
@@ -0,0 +1,172 @@
+<?php
+
+class HTMLPurifier_DefinitionCache_Serializer extends
+ HTMLPurifier_DefinitionCache
+{
+
+ public function add($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (file_exists($file)) return false;
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function set($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function replace($def, $config) {
+ if (!$this->checkDefType($def)) return;
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ if (!$this->_prepareDir($config)) return false;
+ return $this->_write($file, serialize($def));
+ }
+
+ public function get($config) {
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ return unserialize(file_get_contents($file));
+ }
+
+ public function remove($config) {
+ $file = $this->generateFilePath($config);
+ if (!file_exists($file)) return false;
+ return unlink($file);
+ }
+
+ public function flush($config) {
+ if (!$this->_prepareDir($config)) return false;
+ $dir = $this->generateDirectoryPath($config);
+ $dh = opendir($dir);
+ while (false !== ($filename = readdir($dh))) {
+ if (empty($filename)) continue;
+ if ($filename[0] === '.') continue;
+ unlink($dir . '/' . $filename);
+ }
+ }
+
+ public function cleanup($config) {
+ if (!$this->_prepareDir($config)) return false;
+ $dir = $this->generateDirectoryPath($config);
+ $dh = opendir($dir);
+ while (false !== ($filename = readdir($dh))) {
+ if (empty($filename)) continue;
+ if ($filename[0] === '.') continue;
+ $key = substr($filename, 0, strlen($filename) - 4);
+ if ($this->isOld($key, $config)) unlink($dir . '/' . $filename);
+ }
+ }
+
+ /**
+ * Generates the file path to the serial file corresponding to
+ * the configuration and definition name
+ * @todo Make protected
+ */
+ public function generateFilePath($config) {
+ $key = $this->generateKey($config);
+ return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
+ }
+
+ /**
+ * Generates the path to the directory contain this cache's serial files
+ * @note No trailing slash
+ * @todo Make protected
+ */
+ public function generateDirectoryPath($config) {
+ $base = $this->generateBaseDirectoryPath($config);
+ return $base . '/' . $this->type;
+ }
+
+ /**
+ * Generates path to base directory that contains all definition type
+ * serials
+ * @todo Make protected
+ */
+ public function generateBaseDirectoryPath($config) {
+ $base = $config->get('Cache.SerializerPath');
+ $base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
+ return $base;
+ }
+
+ /**
+ * Convenience wrapper function for file_put_contents
+ * @param $file File name to write to
+ * @param $data Data to write into file
+ * @return Number of bytes written if success, or false if failure.
+ */
+ private function _write($file, $data) {
+ return file_put_contents($file, $data);
+ }
+
+ /**
+ * Prepares the directory that this type stores the serials in
+ * @return True if successful
+ */
+ private function _prepareDir($config) {
+ $directory = $this->generateDirectoryPath($config);
+ if (!is_dir($directory)) {
+ $base = $this->generateBaseDirectoryPath($config);
+ if (!is_dir($base)) {
+ trigger_error('Base directory '.$base.' does not exist,
+ please create or change using %Cache.SerializerPath',
+ E_USER_WARNING);
+ return false;
+ } elseif (!$this->_testPermissions($base)) {
+ return false;
+ }
+ $old = umask(0022); // disable group and world writes
+ mkdir($directory);
+ umask($old);
+ } elseif (!$this->_testPermissions($directory)) {
+ return false;
+ }
+ return true;
+ }
+
+ /**
+ * Tests permissions on a directory and throws out friendly
+ * error messages and attempts to chmod it itself if possible
+ */
+ private function _testPermissions($dir) {
+ // early abort, if it is writable, everything is hunky-dory
+ if (is_writable($dir)) return true;
+ if (!is_dir($dir)) {
+ // generally, you'll want to handle this beforehand
+ // so a more specific error message can be given
+ trigger_error('Directory '.$dir.' does not exist',
+ E_USER_WARNING);
+ return false;
+ }
+ if (function_exists('posix_getuid')) {
+ // POSIX system, we can give more specific advice
+ if (fileowner($dir) === posix_getuid()) {
+ // we can chmod it ourselves
+ chmod($dir, 0755);
+ return true;
+ } elseif (filegroup($dir) === posix_getgid()) {
+ $chmod = '775';
+ } else {
+ // PHP's probably running as nobody, so we'll
+ // need to give global permissions
+ $chmod = '777';
+ }
+ trigger_error('Directory '.$dir.' not writable, '.
+ 'please chmod to ' . $chmod,
+ E_USER_WARNING);
+ } else {
+ // generic error message
+ trigger_error('Directory '.$dir.' not writable, '.
+ 'please alter file permissions',
+ E_USER_WARNING);
+ }
+ return false;
+ }
+
+}
+
+// vim: et sw=4 sts=4
diff --git a/library/HTMLPurifier/DefinitionCache/Serializer/README b/library/HTMLPurifier/DefinitionCache/Serializer/README
new file mode 100755
index 000000000..2e35c1c3d
--- /dev/null
+++ b/library/HTMLPurifier/DefinitionCache/Serializer/README
@@ -0,0 +1,3 @@
+This is a dummy file to prevent Git from ignoring this empty directory.
+
+ vim: et sw=4 sts=4