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AphrontResponse.php
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Tue, Jan 7, 10:09

AphrontResponse.php
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<?php
/*
* Copyright 2012 Facebook, Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
/**
* @group aphront
*/
abstract class AphrontResponse {
private $request;
private $cacheable = false;
private $responseCode = 200;
private $lastModified = null;
protected $frameable;
public function setRequest($request) {
$this->request = $request;
return $this;
}
public function getRequest() {
return $this->request;
}
public function getHeaders() {
$headers = array();
if (!$this->frameable) {
$headers[] = array('X-Frame-Options', 'Deny');
}
return $headers;
}
public function setCacheDurationInSeconds($duration) {
$this->cacheable = $duration;
return $this;
}
public function setLastModified($epoch_timestamp) {
$this->lastModified = $epoch_timestamp;
return $this;
}
public function setHTTPResponseCode($code) {
$this->responseCode = $code;
return $this;
}
public function getHTTPResponseCode() {
return $this->responseCode;
}
public function setFrameable($frameable) {
$this->frameable = $frameable;
return $this;
}
public function getCacheHeaders() {
$headers = array();
if ($this->cacheable) {
$headers[] = array(
'Expires',
$this->formatEpochTimestampForHTTPHeader(time() + $this->cacheable));
} else {
$headers[] = array(
'Cache-Control',
'private, no-cache, no-store, must-revalidate');
$headers[] = array(
'Expires',
'Sat, 01 Jan 2000 00:00:00 GMT');
}
if ($this->lastModified) {
$headers[] = array(
'Last-Modified',
$this->formatEpochTimestampForHTTPHeader($this->lastModified));
}
// IE has a feature where it may override an explicit Content-Type
// declaration by inferring a content type. This can be a security risk
// and we always explicitly transmit the correct Content-Type header, so
// prevent IE from using inferred content types.
$headers[] = array('X-Content-Type-Options', 'nosniff');
return $headers;
}
private function formatEpochTimestampForHTTPHeader($epoch_timestamp) {
return gmdate('D, d M Y H:i:s', $epoch_timestamp).' GMT';
}
abstract public function buildResponseString();
}

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