403 lines
14 KiB
PHP
403 lines
14 KiB
PHP
|
<?php
|
||
|
|
/**
|
||
|
|
* Zend Framework
|
||
|
|
*
|
||
|
|
* LICENSE
|
||
|
|
*
|
||
|
|
* This source file is subject to the new BSD license that is bundled
|
||
|
|
* with this package in the file LICENSE.txt.
|
||
|
|
* It is also available through the world-wide-web at this URL:
|
||
|
|
* http://framework.zend.com/license/new-bsd
|
||
|
|
* If you did not receive a copy of the license and are unable to
|
||
|
|
* obtain it through the world-wide-web, please send an email
|
||
|
|
* to license@zend.com so we can send you a copy immediately.
|
||
|
|
*
|
||
|
|
* @category Zend
|
||
|
|
* @package Zend_Cache
|
||
|
|
* @subpackage Zend_Cache_Frontend
|
||
|
|
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
|
||
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
||
|
|
* @version $Id: Page.php 16974 2009-07-22 19:23:08Z matthew $
|
||
|
|
*/
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @see Zend_Cache_Core
|
||
|
|
*/
|
||
|
|
require_once 'Zend/Cache/Core.php';
|
||
|
|
|
||
|
|
|
||
|
|
/**
|
||
|
|
* @package Zend_Cache
|
||
|
|
* @subpackage Zend_Cache_Frontend
|
||
|
|
* @copyright Copyright (c) 2005-2009 Zend Technologies USA Inc. (http://www.zend.com)
|
||
|
|
* @license http://framework.zend.com/license/new-bsd New BSD License
|
||
|
|
*/
|
||
|
|
class Zend_Cache_Frontend_Page extends Zend_Cache_Core
|
||
|
|
{
|
||
|
|
/**
|
||
|
|
* This frontend specific options
|
||
|
|
*
|
||
|
|
* ====> (boolean) http_conditional :
|
||
|
|
* - if true, http conditional mode is on
|
||
|
|
* WARNING : http_conditional OPTION IS NOT IMPLEMENTED FOR THE MOMENT (TODO)
|
||
|
|
*
|
||
|
|
* ====> (boolean) debug_header :
|
||
|
|
* - if true, a debug text is added before each cached pages
|
||
|
|
*
|
||
|
|
* ====> (boolean) content_type_memorization :
|
||
|
|
* - deprecated => use memorize_headers instead
|
||
|
|
* - if the Content-Type header is sent after the cache was started, the
|
||
|
|
* corresponding value can be memorized and replayed when the cache is hit
|
||
|
|
* (if false (default), the frontend doesn't take care of Content-Type header)
|
||
|
|
*
|
||
|
|
* ====> (array) memorize_headers :
|
||
|
|
* - an array of strings corresponding to some HTTP headers name. Listed headers
|
||
|
|
* will be stored with cache datas and "replayed" when the cache is hit
|
||
|
|
*
|
||
|
|
* ====> (array) default_options :
|
||
|
|
* - an associative array of default options :
|
||
|
|
* - (boolean) cache : cache is on by default if true
|
||
|
|
* - (boolean) cacheWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
|
||
|
|
* if true, cache is still on even if there are some variables in this superglobal array
|
||
|
|
* if false, cache is off if there are some variables in this superglobal array
|
||
|
|
* - (boolean) makeIdWithXXXVariables (XXXX = 'Get', 'Post', 'Session', 'Files' or 'Cookie') :
|
||
|
|
* if true, we have to use the content of this superglobal array to make a cache id
|
||
|
|
* if false, the cache id won't be dependent of the content of this superglobal array
|
||
|
|
* - (int) specific_lifetime : cache specific lifetime
|
||
|
|
* (false => global lifetime is used, null => infinite lifetime,
|
||
|
|
* integer => this lifetime is used), this "lifetime" is probably only
|
||
|
|
* usefull when used with "regexps" array
|
||
|
|
* - (array) tags : array of tags (strings)
|
||
|
|
* - (int) priority : integer between 0 (very low priority) and 10 (maximum priority) used by
|
||
|
|
* some particular backends
|
||
|
|
*
|
||
|
|
* ====> (array) regexps :
|
||
|
|
* - an associative array to set options only for some REQUEST_URI
|
||
|
|
* - keys are (pcre) regexps
|
||
|
|
* - values are associative array with specific options to set if the regexp matchs on $_SERVER['REQUEST_URI']
|
||
|
|
* (see default_options for the list of available options)
|
||
|
|
* - if several regexps match the $_SERVER['REQUEST_URI'], only the last one will be used
|
||
|
|
*
|
||
|
|
* @var array options
|
||
|
|
*/
|
||
|
|
protected $_specificOptions = array(
|
||
|
|
'http_conditional' => false,
|
||
|
|
'debug_header' => false,
|
||
|
|
'content_type_memorization' => false,
|
||
|
|
'memorize_headers' => array(),
|
||
|
|
'default_options' => array(
|
||
|
|
'cache_with_get_variables' => false,
|
||
|
|
'cache_with_post_variables' => false,
|
||
|
|
'cache_with_session_variables' => false,
|
||
|
|
'cache_with_files_variables' => false,
|
||
|
|
'cache_with_cookie_variables' => false,
|
||
|
|
'make_id_with_get_variables' => true,
|
||
|
|
'make_id_with_post_variables' => true,
|
||
|
|
'make_id_with_session_variables' => true,
|
||
|
|
'make_id_with_files_variables' => true,
|
||
|
|
'make_id_with_cookie_variables' => true,
|
||
|
|
'cache' => true,
|
||
|
|
'specific_lifetime' => false,
|
||
|
|
'tags' => array(),
|
||
|
|
'priority' => null
|
||
|
|
),
|
||
|
|
'regexps' => array()
|
||
|
|
);
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Internal array to store some options
|
||
|
|
*
|
||
|
|
* @var array associative array of options
|
||
|
|
*/
|
||
|
|
protected $_activeOptions = array();
|
||
|
|
|
||
|
|
/**
|
||
|
|
* If true, the page won't be cached
|
||
|
|
*
|
||
|
|
* @var boolean
|
||
|
|
*/
|
||
|
|
protected $_cancel = false;
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Constructor
|
||
|
|
*
|
||
|
|
* @param array $options Associative array of options
|
||
|
|
* @param boolean $doNotTestCacheValidity If set to true, the cache validity won't be tested
|
||
|
|
* @throws Zend_Cache_Exception
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
public function __construct(array $options = array())
|
||
|
|
{
|
||
|
|
while (list($name, $value) = each($options)) {
|
||
|
|
$name = strtolower($name);
|
||
|
|
switch ($name) {
|
||
|
|
case 'regexps':
|
||
|
|
$this->_setRegexps($value);
|
||
|
|
break;
|
||
|
|
case 'default_options':
|
||
|
|
$this->_setDefaultOptions($value);
|
||
|
|
break;
|
||
|
|
case 'content_type_memorization':
|
||
|
|
$this->_setContentTypeMemorization($value);
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
$this->setOption($name, $value);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (isset($this->_specificOptions['http_conditional'])) {
|
||
|
|
if ($this->_specificOptions['http_conditional']) {
|
||
|
|
Zend_Cache::throwException('http_conditional is not implemented for the moment !');
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->setOption('automatic_serialization', true);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Specific setter for the 'default_options' option (with some additional tests)
|
||
|
|
*
|
||
|
|
* @param array $options Associative array
|
||
|
|
* @throws Zend_Cache_Exception
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function _setDefaultOptions($options)
|
||
|
|
{
|
||
|
|
if (!is_array($options)) {
|
||
|
|
Zend_Cache::throwException('default_options must be an array !');
|
||
|
|
}
|
||
|
|
foreach ($options as $key=>$value) {
|
||
|
|
if (!is_string($key)) {
|
||
|
|
Zend_Cache::throwException("invalid option [$key] !");
|
||
|
|
}
|
||
|
|
$key = strtolower($key);
|
||
|
|
if (isset($this->_specificOptions['default_options'][$key])) {
|
||
|
|
$this->_specificOptions['default_options'][$key] = $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Set the deprecated contentTypeMemorization option
|
||
|
|
*
|
||
|
|
* @param boolean $value value
|
||
|
|
* @return void
|
||
|
|
* @deprecated
|
||
|
|
*/
|
||
|
|
protected function _setContentTypeMemorization($value)
|
||
|
|
{
|
||
|
|
$found = null;
|
||
|
|
foreach ($this->_specificOptions['memorize_headers'] as $key => $value) {
|
||
|
|
if (strtolower($value) == 'content-type') {
|
||
|
|
$found = $key;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($value) {
|
||
|
|
if (!$found) {
|
||
|
|
$this->_specificOptions['memorize_headers'][] = 'Content-Type';
|
||
|
|
}
|
||
|
|
} else {
|
||
|
|
if ($found) {
|
||
|
|
unset($this->_specificOptions['memorize_headers'][$found]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Specific setter for the 'regexps' option (with some additional tests)
|
||
|
|
*
|
||
|
|
* @param array $options Associative array
|
||
|
|
* @throws Zend_Cache_Exception
|
||
|
|
* @return void
|
||
|
|
*/
|
||
|
|
protected function _setRegexps($regexps)
|
||
|
|
{
|
||
|
|
if (!is_array($regexps)) {
|
||
|
|
Zend_Cache::throwException('regexps option must be an array !');
|
||
|
|
}
|
||
|
|
foreach ($regexps as $regexp=>$conf) {
|
||
|
|
if (!is_array($conf)) {
|
||
|
|
Zend_Cache::throwException('regexps option must be an array of arrays !');
|
||
|
|
}
|
||
|
|
$validKeys = array_keys($this->_specificOptions['default_options']);
|
||
|
|
foreach ($conf as $key=>$value) {
|
||
|
|
if (!is_string($key)) {
|
||
|
|
Zend_Cache::throwException("unknown option [$key] !");
|
||
|
|
}
|
||
|
|
$key = strtolower($key);
|
||
|
|
if (!in_array($key, $validKeys)) {
|
||
|
|
unset($regexps[$regexp][$key]);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->setOption('regexps', $regexps);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Start the cache
|
||
|
|
*
|
||
|
|
* @param string $id (optional) A cache id (if you set a value here, maybe you have to use Output frontend instead)
|
||
|
|
* @param boolean $doNotDie For unit testing only !
|
||
|
|
* @return boolean True if the cache is hit (false else)
|
||
|
|
*/
|
||
|
|
public function start($id = false, $doNotDie = false)
|
||
|
|
{
|
||
|
|
$this->_cancel = false;
|
||
|
|
$lastMatchingRegexp = null;
|
||
|
|
foreach ($this->_specificOptions['regexps'] as $regexp => $conf) {
|
||
|
|
if (preg_match("`$regexp`", $_SERVER['REQUEST_URI'])) {
|
||
|
|
$lastMatchingRegexp = $regexp;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$this->_activeOptions = $this->_specificOptions['default_options'];
|
||
|
|
if ($lastMatchingRegexp !== null) {
|
||
|
|
$conf = $this->_specificOptions['regexps'][$lastMatchingRegexp];
|
||
|
|
foreach ($conf as $key=>$value) {
|
||
|
|
$this->_activeOptions[$key] = $value;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if (!($this->_activeOptions['cache'])) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if (!$id) {
|
||
|
|
$id = $this->_makeId();
|
||
|
|
if (!$id) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$array = $this->load($id);
|
||
|
|
if ($array !== false) {
|
||
|
|
$data = $array['data'];
|
||
|
|
$headers = $array['headers'];
|
||
|
|
if (!headers_sent()) {
|
||
|
|
foreach ($headers as $key=>$headerCouple) {
|
||
|
|
$name = $headerCouple[0];
|
||
|
|
$value = $headerCouple[1];
|
||
|
|
header("$name: $value");
|
||
|
|
}
|
||
|
|
}
|
||
|
|
if ($this->_specificOptions['debug_header']) {
|
||
|
|
echo 'DEBUG HEADER : This is a cached page !';
|
||
|
|
}
|
||
|
|
echo $data;
|
||
|
|
if ($doNotDie) {
|
||
|
|
return true;
|
||
|
|
}
|
||
|
|
die();
|
||
|
|
}
|
||
|
|
ob_start(array($this, '_flush'));
|
||
|
|
ob_implicit_flush(false);
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Cancel the current caching process
|
||
|
|
*/
|
||
|
|
public function cancel()
|
||
|
|
{
|
||
|
|
$this->_cancel = true;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* callback for output buffering
|
||
|
|
* (shouldn't really be called manually)
|
||
|
|
*
|
||
|
|
* @param string $data Buffered output
|
||
|
|
* @return string Data to send to browser
|
||
|
|
*/
|
||
|
|
public function _flush($data)
|
||
|
|
{
|
||
|
|
if ($this->_cancel) {
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
$contentType = null;
|
||
|
|
$storedHeaders = array();
|
||
|
|
$headersList = headers_list();
|
||
|
|
foreach($this->_specificOptions['memorize_headers'] as $key=>$headerName) {
|
||
|
|
foreach ($headersList as $headerSent) {
|
||
|
|
$tmp = explode(':', $headerSent);
|
||
|
|
$headerSentName = trim(array_shift($tmp));
|
||
|
|
if (strtolower($headerName) == strtolower($headerSentName)) {
|
||
|
|
$headerSentValue = trim(implode(':', $tmp));
|
||
|
|
$storedHeaders[] = array($headerSentName, $headerSentValue);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
}
|
||
|
|
$array = array(
|
||
|
|
'data' => $data,
|
||
|
|
'headers' => $storedHeaders
|
||
|
|
);
|
||
|
|
$this->save($array, null, $this->_activeOptions['tags'], $this->_activeOptions['specific_lifetime'], $this->_activeOptions['priority']);
|
||
|
|
return $data;
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make an id depending on REQUEST_URI and superglobal arrays (depending on options)
|
||
|
|
*
|
||
|
|
* @return mixed|false a cache id (string), false if the cache should have not to be used
|
||
|
|
*/
|
||
|
|
protected function _makeId()
|
||
|
|
{
|
||
|
|
$tmp = $_SERVER['REQUEST_URI'];
|
||
|
|
$array = explode('?', $tmp, 2);
|
||
|
|
$tmp = $array[0];
|
||
|
|
foreach (array('Get', 'Post', 'Session', 'Files', 'Cookie') as $arrayName) {
|
||
|
|
$tmp2 = $this->_makePartialId($arrayName, $this->_activeOptions['cache_with_' . strtolower($arrayName) . '_variables'], $this->_activeOptions['make_id_with_' . strtolower($arrayName) . '_variables']);
|
||
|
|
if ($tmp2===false) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
$tmp = $tmp . $tmp2;
|
||
|
|
}
|
||
|
|
return md5($tmp);
|
||
|
|
}
|
||
|
|
|
||
|
|
/**
|
||
|
|
* Make a partial id depending on options
|
||
|
|
*
|
||
|
|
* @param string $arrayName Superglobal array name
|
||
|
|
* @param bool $bool1 If true, cache is still on even if there are some variables in the superglobal array
|
||
|
|
* @param bool $bool2 If true, we have to use the content of the superglobal array to make a partial id
|
||
|
|
* @return mixed|false Partial id (string) or false if the cache should have not to be used
|
||
|
|
*/
|
||
|
|
protected function _makePartialId($arrayName, $bool1, $bool2)
|
||
|
|
{
|
||
|
|
switch ($arrayName) {
|
||
|
|
case 'Get':
|
||
|
|
$var = $_GET;
|
||
|
|
break;
|
||
|
|
case 'Post':
|
||
|
|
$var = $_POST;
|
||
|
|
break;
|
||
|
|
case 'Session':
|
||
|
|
if (isset($_SESSION)) {
|
||
|
|
$var = $_SESSION;
|
||
|
|
} else {
|
||
|
|
$var = null;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'Cookie':
|
||
|
|
if (isset($_COOKIE)) {
|
||
|
|
$var = $_COOKIE;
|
||
|
|
} else {
|
||
|
|
$var = null;
|
||
|
|
}
|
||
|
|
break;
|
||
|
|
case 'Files':
|
||
|
|
$var = $_FILES;
|
||
|
|
break;
|
||
|
|
default:
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
if ($bool1) {
|
||
|
|
if ($bool2) {
|
||
|
|
return serialize($var);
|
||
|
|
}
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
if (count($var) > 0) {
|
||
|
|
return false;
|
||
|
|
}
|
||
|
|
return '';
|
||
|
|
}
|
||
|
|
|
||
|
|
}
|