<?php
-if( !defined( 'MEDIAWIKI' ) ) {
+/**
+ * Response handler for Ajax requests
+ *
+ * @file
+ * @ingroup Ajax
+ */
+
+if ( !defined( 'MEDIAWIKI' ) ) {
die( 1 );
}
-/** @todo document */
+/**
+ * Handle responses for Ajax requests (send headers, print
+ * content, that sort of thing)
+ *
+ * @ingroup Ajax
+ */
class AjaxResponse {
- var $mCacheDuration;
- var $mVary;
+ /** Number of seconds to get the response cached by a proxy */
+ private $mCacheDuration;
- var $mDisabled;
- var $mText;
- var $mResponseCode;
- var $mLastModified;
- var $mContentType;
+ /** HTTP header Content-Type */
+ private $mContentType;
- function __construct( $text = NULL ) {
- $this->mCacheDuration = NULL;
- $this->mVary = NULL;
+ /** Disables output. Can be set by calling $AjaxResponse->disable() */
+ private $mDisabled;
+
+ /** Date for the HTTP header Last-modified */
+ private $mLastModified;
+
+ /** HTTP response code */
+ private $mResponseCode;
+
+ /** HTTP Vary header */
+ private $mVary;
+
+ /** Content of our HTTP response */
+ private $mText;
+
+ function __construct( $text = null ) {
+ $this->mCacheDuration = null;
+ $this->mVary = null;
$this->mDisabled = false;
$this->mText = '';
$this->mResponseCode = '200 OK';
$this->mLastModified = false;
- $this->mContentType= 'text/html; charset=utf-8';
+ $this->mContentType = 'application/x-wiki';
if ( $text ) {
$this->addText( $text );
$this->mDisabled = true;
}
+ /** Add content to the response */
function addText( $text ) {
if ( ! $this->mDisabled && $text ) {
$this->mText .= $text;
}
}
+ /** Output text */
function printText() {
if ( ! $this->mDisabled ) {
print $this->mText;
}
}
+ /** Construct the header and output it */
function sendHeaders() {
global $wgUseSquid, $wgUseESI;
header( "Status: " . $this->mResponseCode, true, (int)$n );
}
- header ("Content-Type: " . $this->mContentType );
+ header ( "Content-Type: " . $this->mContentType );
if ( $this->mLastModified ) {
- header ("Last-Modified: " . $this->mLastModified );
- }
- else {
- header ("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
+ header ( "Last-Modified: " . $this->mLastModified );
+ } else {
+ header ( "Last-Modified: " . gmdate( "D, d M Y H:i:s" ) . " GMT" );
}
if ( $this->mCacheDuration ) {
-
- # If squid caches are configured, tell them to cache the response,
+ # If squid caches are configured, tell them to cache the response,
# and tell the client to always check with the squid. Otherwise,
# tell the client to use a cached copy, without a way to purge it.
- if( $wgUseSquid ) {
-
+ if ( $wgUseSquid ) {
# Expect explicite purge of the proxy cache, but require end user agents
# to revalidate against the proxy on each visit.
# Surrogate-Control controls our Squid, Cache-Control downstream caches
if ( $wgUseESI ) {
- header( 'Surrogate-Control: max-age='.$this->mCacheDuration.', content="ESI/1.0"');
+ header( 'Surrogate-Control: max-age=' . $this->mCacheDuration . ', content="ESI/1.0"' );
header( 'Cache-Control: s-maxage=0, must-revalidate, max-age=0' );
} else {
- header( 'Cache-Control: s-maxage='.$this->mCacheDuration.', must-revalidate, max-age=0' );
+ header( 'Cache-Control: s-maxage=' . $this->mCacheDuration . ', must-revalidate, max-age=0' );
}
} else {
# Let the client do the caching. Cache is not purged.
- header ("Expires: " . gmdate( "D, d M Y H:i:s", time() + $this->mCacheDuration ) . " GMT");
- header ("Cache-Control: s-max-age={$this->mCacheDuration},public,max-age={$this->mCacheDuration}");
+ header ( "Expires: " . gmdate( "D, d M Y H:i:s", time() + $this->mCacheDuration ) . " GMT" );
+ header ( "Cache-Control: s-maxage={$this->mCacheDuration},public,max-age={$this->mCacheDuration}" );
}
} else {
# always expired, always modified
- header ("Expires: Mon, 26 Jul 1997 05:00:00 GMT"); // Date in the past
- header ("Cache-Control: no-cache, must-revalidate"); // HTTP/1.1
- header ("Pragma: no-cache"); // HTTP/1.0
+ header ( "Expires: Mon, 26 Jul 1997 05:00:00 GMT" ); // Date in the past
+ header ( "Cache-Control: no-cache, must-revalidate" ); // HTTP/1.1
+ header ( "Pragma: no-cache" ); // HTTP/1.0
}
if ( $this->mVary ) {
wfDebug( "$fname: CACHE DISABLED, NO TIMESTAMP\n" );
return;
}
- if( !$wgCachePages ) {
+
+ if ( !$wgCachePages ) {
wfDebug( "$fname: CACHE DISABLED\n", false );
return;
}
- if( $wgUser->getOption( 'nocache' ) ) {
+
+ if ( $wgUser->getOption( 'nocache' ) ) {
wfDebug( "$fname: USER DISABLED CACHE\n", false );
return;
}
$timestamp = wfTimestamp( TS_MW, $timestamp );
$lastmod = wfTimestamp( TS_RFC2822, max( $timestamp, $wgUser->mTouched, $wgCacheEpoch ) );
- if( !empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
+ if ( !empty( $_SERVER['HTTP_IF_MODIFIED_SINCE'] ) ) {
# IE sends sizes after the date like this:
# Wed, 20 Aug 2003 06:51:19 GMT; length=5202
# this breaks strtotime().
$ismodsince = wfTimestamp( TS_MW, $modsinceTime ? $modsinceTime : 1 );
wfDebug( "$fname: -- client send If-Modified-Since: " . $modsince . "\n", false );
wfDebug( "$fname: -- we might send Last-Modified : $lastmod\n", false );
- if( ($ismodsince >= $timestamp ) && $wgUser->validateCache( $ismodsince ) && $ismodsince >= $wgCacheEpoch ) {
+
+ if ( ( $ismodsince >= $timestamp ) && $wgUser->validateCache( $ismodsince ) && $ismodsince >= $wgCacheEpoch ) {
+ ini_set( 'zlib.output_compression', 0 );
$this->setResponseCode( "304 Not Modified" );
$this->disable();
$this->mLastModified = $lastmod;
function loadFromMemcached( $mckey, $touched ) {
global $wgMemc;
- if ( !$touched ) return false;
+
+ if ( !$touched ) {
+ return false;
+ }
$mcvalue = $wgMemc->get( $mckey );
if ( $mcvalue ) {
if ( $touched <= $mcvalue['timestamp'] ) {
wfDebug( "Got $mckey from cache\n" );
$this->mText = $mcvalue['value'];
+
return true;
} else {
wfDebug( "$mckey has expired\n" );
return true;
}
}
-?>
dépôts / lhc / web / wiklou.git / blobdiff