HTMLPurifier_DefinitionCache_Serializer Class Reference

Inheritance diagram for HTMLPurifier_DefinitionCache_Serializer:

Collaboration diagram for HTMLPurifier_DefinitionCache_Serializer:

Public Member Functions
	add ($def, $config)
	set ($def, $config)
	replace ($def, $config)
	get ($config)
	remove ($config)
	flush ($config)
	cleanup ($config)
	generateFilePath ($config)
	Generates the file path to the serial file corresponding to the configuration and definition name. More...
	generateDirectoryPath ($config)
	Generates the path to the directory contain this cache's serial files. More...
	generateBaseDirectoryPath ($config)
	Generates path to base directory that contains all definition type serials. More...
Public Member Functions inherited from HTMLPurifier_DefinitionCache
	__construct ($type)
	generateKey ($config)
	Generates a unique identifier for a particular configuration. More...
	isOld ($key, $config)
	Tests whether or not a key is old with respect to the configuration's version and revision number. More...
	checkDefType ($def)
	Checks if a definition's type jives with the cache's type. More...
	add ($def, $config)
	Adds a definition object to the cache. More...
	set ($def, $config)
	Unconditionally saves a definition object to the cache. More...
	replace ($def, $config)
	Replace an object in the cache. More...
	get ($config)
	Retrieves a definition object from the cache. More...
	remove ($config)
	Removes a definition object to the cache. More...
	flush ($config)
	Clears all objects from cache. More...
	cleanup ($config)
	Clears all expired (older version or revision) objects from cache. More...

Private Member Functions
	_write ($file, $data, $config)
	Convenience wrapper function for file_put_contents. More...
	_prepareDir ($config)
	Prepares the directory that this type stores the serials in. More...
	_testPermissions ($dir, $chmod)
	Tests permissions on a directory and throws out friendly error messages and attempts to chmod it itself if possible. More...

Additional Inherited Members
Data Fields inherited from HTMLPurifier_DefinitionCache
	$type
	@type string More...

Detailed Description

Definition at line 3 of file Serializer.php.

Member Function Documentation

_prepareDir()

HTMLPurifier_DefinitionCache_Serializer::_prepareDir (   $config )

private

Prepares the directory that this type stores the serials in.

Parameters

HTMLPurifier_Config

$config

Returns

bool True if successful

Definition at line 216 of file Serializer.php.

    {
        $directory = $this->generateDirectoryPath($config);
        $chmod = $config->get('Cache.SerializerPermissions');
        if (!is_dir($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, $chmod)) {
                return false;
            }
            if ($chmod === null) {
                trigger_error(
                    'Base directory ' . $base . ' does not exist,
                    please create or change using %Cache.SerializerPath',
                    E_USER_WARNING
                );
                return false;
            }
            if ($chmod !== null) {
                mkdir($directory, $chmod);
            } else {
                mkdir($directory);
            }
            if (!$this->_testPermissions($directory, $chmod)) {
                trigger_error(
                    'Base directory ' . $base . ' does not exist,
                    please create or change using %Cache.SerializerPath',
                    E_USER_WARNING
                );
                return false;
            }
        } elseif (!$this->_testPermissions($directory, $chmod)) {
            return false;
        }
        return true;
    }

References $config, _testPermissions(), generateBaseDirectoryPath(), and generateDirectoryPath().

Referenced by add(), cleanup(), flush(), replace(), and set().

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_testPermissions()

HTMLPurifier_DefinitionCache_Serializer::_testPermissions (   $dir,   $chmod  )

private

Tests permissions on a directory and throws out friendly error messages and attempts to chmod it itself if possible.

Parameters

string	$dir	Directory path
int	$chmod	Permissions

Returns

bool True if directory is writable

Definition at line 266 of file Serializer.php.

    {
        // 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') && $chmod !== null) {
            // POSIX system, we can give more specific advice
            if (fileowner($dir) === posix_getuid()) {
                // we can chmod it ourselves
                $chmod = $chmod | 0700;
                if (chmod($dir, $chmod)) {
                    return true;
                }
            } elseif (filegroup($dir) === posix_getgid()) {
                $chmod = $chmod | 0070;
            } else {
                // PHP's probably running as nobody, so we'll
                // need to give global permissions
                $chmod = $chmod | 0777;
            }
            trigger_error(
                'Directory ' . $dir . ' not writable, ' .
                'please chmod to ' . decoct($chmod),
                E_USER_WARNING
            );
        } else {
            // generic error message
            trigger_error(
                'Directory ' . $dir . ' not writable, ' .
                'please alter file permissions',
                E_USER_WARNING
            );
        }
        return false;
    }

Referenced by _prepareDir().

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_write()

HTMLPurifier_DefinitionCache_Serializer::_write (   $file,   $data,   $config  )

private

Convenience wrapper function for file_put_contents.

Parameters

string	$file	File name to write to
string	$data	Data to write into file
HTMLPurifier_Config	$config

Returns

int|bool Number of bytes written if success, or false if failure.

Definition at line 195 of file Serializer.php.

    {
        $result = file_put_contents($file, $data);
        if ($result !== false) {
            // set permissions of the new file (no execute)
            $chmod = $config->get('Cache.SerializerPermissions');
            if ($chmod === null) {
                // don't do anything
            } else {
                $chmod = $chmod & 0666;
                chmod($file, $chmod);
            }
        }
        return $result;
    }

References $config, $data, $file, and $result.

Referenced by add(), replace(), and set().

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add()

HTMLPurifier_DefinitionCache_Serializer::add	(		$def,
			$config
	)

Parameters

HTMLPurifier_Definition	$def
HTMLPurifier_Config	$config

Returns

int|bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 11 of file Serializer.php.

    {
        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), $config);
    }

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

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cleanup()

HTMLPurifier_DefinitionCache_Serializer::cleanup

(

$config

)

Parameters

HTMLPurifier_Config

$config

Returns

bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 122 of file Serializer.php.

    {
        if (!$this->_prepareDir($config)) {
            return false;
        }
        $dir = $this->generateDirectoryPath($config);
        $dh = opendir($dir);
        // See #49 (and above).
        if (false === $dh) {
            return false;
        }
        while (false !== ($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);
            }
        }
        return true;
    }

References $config, $filename, _prepareDir(), generateDirectoryPath(), and HTMLPurifier_DefinitionCache\isOld().

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flush()

HTMLPurifier_DefinitionCache_Serializer::flush

(

$config

)

Parameters

HTMLPurifier_Config

$config

Returns

bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 93 of file Serializer.php.

    {
        if (!$this->_prepareDir($config)) {
            return false;
        }
        $dir = $this->generateDirectoryPath($config);
        $dh = opendir($dir);
        // Apparently, on some versions of PHP, readdir will return
        // an empty string if you pass an invalid argument to readdir.
        // So you need this test.  See #49.
        if (false === $dh) {
            return false;
        }
        while (false !== ($filename = readdir($dh))) {
            if (empty($filename)) {
                continue;
            }
            if ($filename[0] === '.') {
                continue;
            }
            unlink($dir . '/' . $filename);
        }
        return true;
    }

References $config, $filename, _prepareDir(), and generateDirectoryPath().

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generateBaseDirectoryPath()

HTMLPurifier_DefinitionCache_Serializer::generateBaseDirectoryPath

(

$config

)

Generates path to base directory that contains all definition type serials.

Parameters

HTMLPurifier_Config

$config

Returns

mixed|string

Todo:

Make protected

Definition at line 181 of file Serializer.php.

    {
        $base = $config->get('Cache.SerializerPath');
        $base = is_null($base) ? HTMLPURIFIER_PREFIX . '/HTMLPurifier/DefinitionCache/Serializer' : $base;
        return $base;
    }

References $config.

Referenced by _prepareDir(), and generateDirectoryPath().

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generateDirectoryPath()

HTMLPurifier_DefinitionCache_Serializer::generateDirectoryPath

(

$config

)

Generates the path to the directory contain this cache's serial files.

Parameters

HTMLPurifier_Config

$config

Returns

string

Note

No trailing slash

Todo:

Make protected

Definition at line 168 of file Serializer.php.

    {
        $base = $this->generateBaseDirectoryPath($config);
        return $base . '/' . $this->type;
    }

References $config, HTMLPurifier_DefinitionCache\$type, and generateBaseDirectoryPath().

Referenced by _prepareDir(), cleanup(), flush(), and generateFilePath().

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generateFilePath()

HTMLPurifier_DefinitionCache_Serializer::generateFilePath

(

$config

)

Generates the file path to the serial file corresponding to the configuration and definition name.

Parameters

HTMLPurifier_Config

$config

Returns

string

Todo:

Make protected

Definition at line 155 of file Serializer.php.

    {
        $key = $this->generateKey($config);
        return $this->generateDirectoryPath($config) . '/' . $key . '.ser';
    }

References $config, generateDirectoryPath(), and HTMLPurifier_DefinitionCache\generateKey().

Referenced by add(), get(), remove(), replace(), and set().

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get()

HTMLPurifier_DefinitionCache_Serializer::get

(

$config

)

Parameters

HTMLPurifier_Config

$config

Returns

bool|HTMLPurifier_Config

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 67 of file Serializer.php.

    {
        $file = $this->generateFilePath($config);
        if (!file_exists($file)) {
            return false;
        }
        return unserialize(file_get_contents($file));
    }

References $config, $file, and generateFilePath().

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remove()

HTMLPurifier_DefinitionCache_Serializer::remove

(

$config

)

Parameters

HTMLPurifier_Config

$config

Returns

bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 80 of file Serializer.php.

    {
        $file = $this->generateFilePath($config);
        if (!file_exists($file)) {
            return false;
        }
        return unlink($file);
    }

References $config, $file, and generateFilePath().

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replace()

HTMLPurifier_DefinitionCache_Serializer::replace	(		$def,
			$config
	)

Parameters

HTMLPurifier_Definition	$def
HTMLPurifier_Config	$config

Returns

int|bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 48 of file Serializer.php.

    {
        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), $config);
    }

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

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set()

HTMLPurifier_DefinitionCache_Serializer::set	(		$def,
			$config
	)

Parameters

HTMLPurifier_Definition	$def
HTMLPurifier_Config	$config

Returns

int|bool

Reimplemented from HTMLPurifier_DefinitionCache.

Definition at line 31 of file Serializer.php.

    {
        if (!$this->checkDefType($def)) {
            return;
        }
        $file = $this->generateFilePath($config);
        if (!$this->_prepareDir($config)) {
            return false;
        }
        return $this->_write($file, serialize($def), $config);
    }

References $config, $file, _prepareDir(), _write(), HTMLPurifier_DefinitionCache\checkDefType(), and generateFilePath().

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---

The documentation for this class was generated from the following file:

• libs/composer/vendor/ezyang/htmlpurifier/library/HTMLPurifier/DefinitionCache/Serializer.php