diff options
Diffstat (limited to 'plugins/PubSubHubBub/publisher.php')
| -rw-r--r-- | plugins/PubSubHubBub/publisher.php | 86 |
1 files changed, 86 insertions, 0 deletions
diff --git a/plugins/PubSubHubBub/publisher.php b/plugins/PubSubHubBub/publisher.php new file mode 100644 index 000000000..f176a9b8a --- /dev/null +++ b/plugins/PubSubHubBub/publisher.php @@ -0,0 +1,86 @@ +<?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; + } +} + +?>
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