162 lines
4.0 KiB
PHP
162 lines
4.0 KiB
PHP
<?php
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/**
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* Add trackback (receive and send) feature blog entry
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*/
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class TrackBackDecorator extends DataExtension {
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static $trackback_server_class = 'TrackbackHTTPServer';
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// function extraStatics() {
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// return array(
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// 'has_many' => array(
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// 'TrackBackURLs' => 'TrackBackURL',
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// 'TrackBacks' => 'TrackBackPing'
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// )
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// );
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// }
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static $has_many = array(
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'TrackBackURLs' => 'TrackBackURL',
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'TrackBacks' => 'TrackBackPing'
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);
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// function updateCMSFields($fields) {
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// // Trackback URL field
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// if($this->owner->TrackBacksEnabled()) {
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// $trackbackURLTable = new ComplexTableField(
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// $this,
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// 'TrackBackURLs',
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// 'TrackBackURL',
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// array(
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// 'URL' => 'URL',
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// 'IsPung' => 'Pung?'
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// ),
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// 'getCMSFields_forPopup',
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// '',
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// 'ID'
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// );
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// $fields->addFieldToTab("Root.Content.Main", $trackbackURLTable);
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// }
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// else {
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// $fields->addFieldToTab("Root.Content.Main", new ReadonlyField("TrackBackURLsReadOnly", _t("BlogEntry.TrackbackURLs", "Trackback URLs"), _t("BlogEntry.TrackbackURLs_DISABLED", "To use this feature, please check 'Enable TrackBacks' check box on the blog holder.")));
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// }
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// }
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function onBeforePublish() {
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if(!$this->owner->TrackBacksEnabled() && !$this->owner->TrackBackURLs()) return;
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foreach($this->owner->TrackBackURLs() as $trackBackURL) {
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if(!$trackBackURL->Pung && $this->trackbackNotify($trackBackURL->URL)) {
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$trackBackURL->Pung = true;
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$trackBackURL->write();
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}
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}
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}
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/**
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* Trackback notify the specified trackback url
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* @param boolean | true on success, otherwise false
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*/
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function trackbackNotify($url) {
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$content = new HTMLText('Content');
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$content->setValue($this->owner->Content);
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$excerpt = $content->FirstParagraph();
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if($this->owner->Parent() && $this->owner->ParentID > 0) {
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$blogName = $this->owner->Parent()->Title;
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}
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else {
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$blogName = "";
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}
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$postData = array(
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'url' => $this->owner->AbsoluteLink(),
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'title' => $this->owner->Title,
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'excerpt' => $excerpt,
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'blog_name' => $blogName
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);
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$controller = Object::create(self::$trackback_server_class);
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$response = $controller->request($url, $postData);
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if($response->getStatusCode() == '200' && stripos($response->getBody(), "<error>0</error>") !== false) {
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return true;
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}
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return false;
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}
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function updateMetaTags(&$tags) {
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$tags .= $this->owner->renderWith('TrackBackRdf');
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}
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function TrackBackPingLink() {
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return $this->owner->AbsoluteLink() . 'trackbackping';
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}
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function decoratedTrackbackping() {
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$error = 0;
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$message = '';
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if(!(isset($_POST['url']) && $_POST['url'])) {
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$error = 1;
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$message = 'Missing required POST parameter \'url\'.';
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} else {
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$trackbackping = new TrackBackPing();
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$trackbackping->Url = $_POST['url'];
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if(isset($_POST['title']) && $_POST['title']) {
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$trackbackping->Title = $_POST['title'];
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}
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if(isset($_POST['excerpt']) && $_POST['excerpt']) {
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$trackbackping->Excerpt = $_POST['excerpt'];
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}
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if(isset($_POST['blog_name']) && $_POST['blog_name']) {
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$trackbackping->BlogName = $_POST['blog_name'];
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}
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$trackbackping->PageID = $this->owner->ID;
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$trackbackping->write();
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}
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$returnData = new ArrayData(array(
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'Error' => $error,
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'Message' => $message
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));
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return $returnData->renderWith('TrackBackPingReturn');
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}
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}
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/**
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* Example:
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* $controller = Object::create('TrackbackHTTPClient');
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* $response = $controller->request(new SS_HTTPRequest('POST', $url, null, $postData));
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*/
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class TrackbackHTTPServer {
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function __construct() {}
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/**
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* @param string
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* @param array
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* @return SS_HTTPResponse
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*/
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function request($url, $data) {
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$ch = curl_init($url);
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curl_setopt($ch, CURLOPT_FRESH_CONNECT, true);
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curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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curl_setopt($ch, CURLOPT_POST, true);
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curl_setopt($ch, CURLOPT_POSTFIELDS, $data);
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$response = curl_exec($ch);
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$statusCode = curl_getinfo($ch, CURLINFO_HTTP_CODE);
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curl_close($ch);
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return new SS_HTTPResponse($response, $statusCode);
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}
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}
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?>
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