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-rw-r--r--plugins/PubSubHubBub/publisher.php86
1 files changed, 86 insertions, 0 deletions
diff --git a/plugins/PubSubHubBub/publisher.php b/plugins/PubSubHubBub/publisher.php
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+++ b/plugins/PubSubHubBub/publisher.php
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+<?php
+
+// a PHP client library for pubsubhubbub
+// as defined at http://code.google.com/p/pubsubhubbub/
+// written by Josh Fraser | joshfraser.com | josh@eventvue.com
+// Released under Apache License 2.0
+
+class Publisher {
+
+ protected $hub_url;
+ protected $last_response;
+
+ // create a new Publisher
+ public function __construct($hub_url) {
+
+ if (!isset($hub_url))
+ throw new Exception('Please specify a hub url');
+
+ if (!preg_match("|^https?://|i",$hub_url))
+ throw new Exception('The specified hub url does not appear to be valid: '.$hub_url);
+
+ $this->hub_url = $hub_url;
+ }
+
+ // accepts either a single url or an array of urls
+ public function publish_update($topic_urls, $http_function = false) {
+ if (!isset($topic_urls))
+ throw new Exception('Please specify a topic url');
+
+ // check that we're working with an array
+ if (!is_array($topic_urls)) {
+ $topic_urls = array($topic_urls);
+ }
+
+ // set the mode to publish
+ $post_string = "hub.mode=publish";
+ // loop through each topic url
+ foreach ($topic_urls as $topic_url) {
+
+ // lightweight check that we're actually working w/ a valid url
+ if (!preg_match("|^https?://|i",$topic_url))
+ throw new Exception('The specified topic url does not appear to be valid: '.$topic_url);
+
+ // append the topic url parameters
+ $post_string .= "&hub.url=".urlencode($topic_url);
+ }
+
+ // make the http post request and return true/false
+ // easy to over-write to use your own http function
+ if ($http_function)
+ return $http_function($this->hub_url,$post_string);
+ else
+ return $this->http_post($this->hub_url,$post_string);
+ }
+
+ // returns any error message from the latest request
+ public function last_response() {
+ return $this->last_response;
+ }
+
+ // default http function that uses curl to post to the hub endpoint
+ private function http_post($url, $post_string) {
+
+ // add any additional curl options here
+ $options = array(CURLOPT_URL => $url,
+ CURLOPT_POST => true,
+ CURLOPT_POSTFIELDS => $post_string,
+ CURLOPT_USERAGENT => "PubSubHubbub-Publisher-PHP/1.0");
+
+ $ch = curl_init();
+ curl_setopt_array($ch, $options);
+
+ $response = curl_exec($ch);
+ $this->last_response = $response;
+ $info = curl_getinfo($ch);
+
+ curl_close($ch);
+
+ // all good
+ if ($info['http_code'] == 204)
+ return true;
+ return false;
+ }
+}
+
+?> \ No newline at end of file