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@@ -1,210 +0,0 @@
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-<?php
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-/**
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- * A PHP client library for pubsubhubbub.
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- *
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- * @link http://code.google.com/p/pubsubhubbub/
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- *
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- * @author Josh Fraser | joshfraser.com | josh@eventvue.com
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- * @license Apache License 2.0
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- */
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-namespace Pubsubhubbub\Subscriber;
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-
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-use InvalidArgumentException;
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-
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-class Subscriber
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-{
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- /**
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- * Put your google key here.
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- * Required if you want to use the google feed API to lookup RSS feeds.
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- *
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- * @var string
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- */
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- protected $google_key = '';
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-
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- /**
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- * @var string
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- */
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- protected $hub_url;
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-
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- /**
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- * @var string
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- */
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- protected $callback_url;
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-
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- /**
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- * @var string
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- */
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- protected $credentials;
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-
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- /**
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- * @var string accepted values are "async" and "sync"
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- */
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- protected $verify = 'async';
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-
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- /**
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- * @var string
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- */
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- protected $verify_token;
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-
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- /**
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- * @var string
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- */
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- protected $lease_seconds;
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-
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- /**
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- * Create a new Subscriber (credentials added for SuperFeedr support).
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- *
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- * @param string $hub_url
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- * @param string $callback_url
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- * @param string $credentials
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- */
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- public function __construct($hub_url, $callback_url, $credentials = false)
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- {
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- if (! isset($hub_url)) {
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- throw new InvalidArgumentException('Please specify a hub url');
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- }
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-
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- if (! preg_match('|^https?://|i', $hub_url)) {
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- throw new InvalidArgumentException('The specified hub url does not appear to be valid: ' . $hub_url);
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- }
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-
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- if (! isset($callback_url)) {
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- throw new InvalidArgumentException('Please specify a callback');
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- }
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-
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- $this->hub_url = $hub_url;
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- $this->callback_url = $callback_url;
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- $this->credentials = $credentials;
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- }
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-
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- /**
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- * $use_regexp lets you choose whether to use google AJAX feed api (faster, but cached) or a regexp to read from site.
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- *
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- * @param string $url
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- * @param callable $http_function
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- *
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- * @return string
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- */
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- public function find_feed($url, $http_function = false)
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- {
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- // using google feed API
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- $url = "http://ajax.googleapis.com/ajax/services/feed/lookup?key={$this->google_key}&v=1.0&q=" . urlencode($url);
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- // fetch the content
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- if ($http_function) {
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- $response = $http_function($url);
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- } else {
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- $response = $this->http($url);
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- }
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-
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- $result = json_decode($response, true);
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- $rss_url = $result['responseData']['url'];
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-
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- return $rss_url;
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- }
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-
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- /**
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- * Subscribe to a topic.
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- *
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- * @param string $topic_url
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- * @param callable $http_function
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- *
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- * @return mixed
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- */
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- public function subscribe($topic_url, $http_function = false)
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- {
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- return $this->change_subscription('subscribe', $topic_url, $http_function);
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- }
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-
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- /**
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- * Unsubscribe from a topic.
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- *
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- * @param string $topic_url
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- * @param callable $http_function
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- *
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- * @return mixed
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- */
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- public function unsubscribe($topic_url, $http_function = false)
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- {
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- return $this->change_subscription('unsubscribe', $topic_url, $http_function);
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- }
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-
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- /**
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- * Helper function since sub/unsub are handled the same way.
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- *
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- * @param string $mode
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- * @param string $topic_url
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- * @param callable $http_function
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- *
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- * @return mixed
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- */
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- private function change_subscription($mode, $topic_url, $http_function = false)
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- {
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- if (! isset($topic_url)) {
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- throw new InvalidArgumentException('Please specify a topic url');
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- }
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-
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- // lightweight check that we're actually working w/ a valid url
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- if (! preg_match('|^https?://|i', $topic_url)) {
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- throw new InvalidArgumentException('The specified topic url does not appear to be valid: ' . $topic_url);
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- }
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-
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- // set the mode subscribe/unsubscribe
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- $post_string = 'hub.mode=' . $mode;
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- $post_string .= '&hub.callback=' . urlencode($this->callback_url);
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- $post_string .= '&hub.verify=' . $this->verify;
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- $post_string .= '&hub.verify_token=' . $this->verify_token;
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- $post_string .= '&hub.lease_seconds=' . $this->lease_seconds;
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-
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- // append the topic url parameters
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- $post_string .= '&hub.topic=' . urlencode($topic_url);
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-
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- // make the http post request and return true/false
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- // easy to over-write to use your own http function
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- if ($http_function) {
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- return call_user_func_array($http_function, [$this->hub_url, $post_string]);
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- }
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-
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- return $this->http($this->hub_url, $post_string);
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- }
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-
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- /**
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- * Default http function that uses curl to post to the hub endpoint.
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- *
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- * @param string $url
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- * @param string $post_string
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- *
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- * @return mixed
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- */
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- private function http($url, $post_string)
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- {
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-
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- // add any additional curl options here
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- $options = [
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- CURLOPT_URL => $url,
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- CURLOPT_USERAGENT => 'PubSubHubbub-Subscriber-PHP/1.0',
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- CURLOPT_RETURNTRANSFER => true,
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- ];
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-
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- if ($post_string) {
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- $options[CURLOPT_POST] = true;
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- $options[CURLOPT_POSTFIELDS] = $post_string;
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- }
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-
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- if ($this->credentials) {
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- $options[CURLOPT_USERPWD] = $this->credentials;
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- }
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-
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- $ch = curl_init();
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- curl_setopt_array($ch, $options);
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-
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- $response = curl_exec($ch);
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- $info = curl_getinfo($ch);
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-
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- // all good -- anything in the 200 range
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- if (substr($info['http_code'], 0, 1) == '2') {
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- return $response;
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- }
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-
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- return false;
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- }
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-}
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Andrew Dolgov