| 1 |  |  | <?php | 
            
                                                                                                            
                            
            
                                    
            
            
                | 2 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 3 |  |  |  * Format of the Oembed config. Autodiscover allows discovery of all URLs. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 4 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 5 |  |  |  * Endpoint set to true means autodiscovery for this specific provider is | 
            
                                                                                                            
                            
            
                                    
            
            
                | 6 |  |  |  * allowed (even if autodiscovery in general has been disabled). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 7 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 8 |  |  |  * <code> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 9 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 10 |  |  |  * name: Oembed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 11 |  |  |  * --- | 
            
                                                                                                            
                            
            
                                    
            
            
                | 12 |  |  |  * Oembed: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 13 |  |  |  *   providers: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 14 |  |  |  *     'http://*.youtube.com/watch*': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 15 |  |  |  *     'http://www.youtube.com/oembed/' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 16 |  |  |  *   autodiscover: | 
            
                                                                                                            
                            
            
                                    
            
            
                | 17 |  |  |  *     true | 
            
                                                                                                            
                            
            
                                    
            
            
                | 18 |  |  |  * </code> | 
            
                                                                                                            
                            
            
                                    
            
            
                | 19 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 20 |  |  |  * @package framework | 
            
                                                                                                            
                            
            
                                    
            
            
                | 21 |  |  |  * @subpackage oembed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 22 |  |  |  */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 23 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 24 |  |  | class Oembed implements ShortcodeHandler { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 25 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 26 |  |  | 	public static function is_enabled() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 27 |  |  | 		return Config::inst()->get('Oembed', 'enabled'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 28 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 29 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 30 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 31 |  |  | 	 * Gets the autodiscover setting from the config. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 32 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 33 |  |  | 	public static function get_autodiscover() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 34 |  |  | 		return Config::inst()->get('Oembed', 'autodiscover'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 35 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 36 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 37 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 38 |  |  | 	 * Gets providers from config. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 39 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 40 |  |  | 	public static function get_providers() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 41 |  |  | 		return Config::inst()->get('Oembed', 'providers'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 42 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 43 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 44 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 45 |  |  | 	 * Returns an endpoint (a base Oembed URL) from first matching provider. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 46 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 47 |  |  | 	 * @param $url Human-readable URL. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 48 |  |  | 	 * @returns string/bool URL of an endpoint, or false if no matching provider exists. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 49 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 50 |  |  | 	protected static function find_endpoint($url) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 51 |  |  | 		foreach(self::get_providers() as $scheme=>$endpoint) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 52 |  |  | 			if(self::matches_scheme($url, $scheme)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 53 |  |  | 				$protocol = Director::is_https() ? 'https' : 'http'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 54 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 55 |  |  | 				if (is_array($endpoint)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 56 |  |  | 					if (array_key_exists($protocol, $endpoint)) $endpoint = $endpoint[$protocol]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 57 |  |  | 					else $endpoint = reset($endpoint); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 58 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 59 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 60 |  |  | 				return $endpoint; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 61 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 62 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 63 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 64 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 65 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 66 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 67 |  |  | 	 * Checks the URL if it matches against the scheme (pattern). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 68 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 69 |  |  | 	 * @param $url Human-readable URL to be checked. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 70 |  |  | 	 * @param $scheme Pattern to be matched against. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 71 |  |  | 	 * @returns bool Whether the pattern matches or not. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 72 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 73 |  |  | 	protected static function matches_scheme($url, $scheme) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 74 |  |  | 		$urlInfo = parse_url($url); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 75 |  |  | 		$schemeInfo = parse_url($scheme); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 76 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 77 |  |  | 		foreach($schemeInfo as $k=>$v) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 78 |  |  | 			if(!array_key_exists($k, $urlInfo)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 79 |  |  | 				return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 80 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 81 |  |  | 			if(strpos($v, '*') !== false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 82 |  |  | 				$v = preg_quote($v, '/'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 83 |  |  | 				$v = str_replace('\*', '.*', $v); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 84 |  |  | 				if($k == 'host') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 85 |  |  | 					$v = str_replace('*\.', '*', $v); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 86 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 87 |  |  | 				if(!preg_match('/' . $v . '/', $urlInfo[$k])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 88 |  |  | 					return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 89 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 90 |  |  | 			} elseif(strcasecmp($urlInfo[$k], $v)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 91 |  |  | 				return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 92 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 93 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 94 |  |  | 		return true; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 95 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 96 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 97 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 98 |  |  | 	 * Performs a HTTP request to the URL and scans the response for resource links | 
            
                                                                                                            
                            
            
                                    
            
            
                | 99 |  |  | 	 * that mention oembed in their type. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 100 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 101 |  |  | 	 * @param $url Human readable URL. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 102 |  |  | 	 * @returns string/bool Oembed URL, or false. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 103 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 104 |  |  | 	protected static function autodiscover_from_url($url) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 105 |  |  | 	{ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 106 |  |  | 		// Fetch the URL (cache for a week by default) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 107 |  |  | 		$service = new RestfulService($url, 60 * 60 * 24 * 7); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 108 |  |  | 		$body = $service->request(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 109 |  |  | 		if (!$body || $body->isError()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 110 |  |  | 			return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 111 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 112 |  |  | 		$body = $body->getBody(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 113 |  |  | 		return static::autodiscover_from_body($body); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 114 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 115 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 116 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 117 |  |  | 	 * Given a response body, determine if there is an autodiscover url | 
            
                                                                                                            
                            
            
                                    
            
            
                | 118 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 119 |  |  | 	 * @param string $body | 
            
                                                                                                            
                            
            
                                    
            
            
                | 120 |  |  | 	 * @return bool|string | 
            
                                                                                                            
                            
            
                                    
            
            
                | 121 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 122 |  |  | 	public static function autodiscover_from_body($body) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 123 |  |  | 		// Look within the body for an oembed link. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 124 |  |  | 		$pcreOmbed = '#<link[^>]+?(?:href=[\'"](?<first>[^\'"]+?)[\'"][^>]+?)' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 125 |  |  | 			. '?type=["\']application/json\+oembed["\']' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 126 |  |  | 			. '(?:[^>]+?href=[\'"](?<second>[^\'"]+?)[\'"])?#'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 127 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 128 |  |  | 		if(preg_match_all($pcreOmbed, $body, $matches, PREG_SET_ORDER)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 129 |  |  | 			$match = $matches[0]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 130 |  |  | 			if(!empty($match['second'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 131 |  |  | 				return html_entity_decode($match['second']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 132 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 133 |  |  | 			if(!empty($match['first'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 134 |  |  | 				return html_entity_decode($match['first']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 135 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 136 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 137 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 138 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 139 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 140 |  |  | 	/** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 141 |  |  | 	 * Takes the human-readable URL of an embeddable resource and converts it into an | 
            
                                                                                                            
                            
            
                                    
            
            
                | 142 |  |  | 	 * Oembed_Result descriptor (which contains a full Oembed resource URL). | 
            
                                                                                                            
                            
            
                                    
            
            
                | 143 |  |  | 	 * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 144 |  |  | 	 * @param $url Human-readable URL | 
            
                                                                                                            
                            
            
                                    
            
            
                | 145 |  |  | 	 * @param $type ? | 
            
                                                                                                            
                            
            
                                    
            
            
                | 146 |  |  | 	 * @param $options array Options to be used for constructing the resulting descriptor. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 147 |  |  | 	 * @returns Oembed_Result/bool An Oembed descriptor, or false | 
            
                                                                                                            
                            
            
                                    
            
            
                | 148 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 149 |  |  | 	public static function get_oembed_from_url($url, $type = false, array $options = array()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 150 |  |  | 		if(!self::is_enabled()) return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 151 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 152 |  |  | 		// Find or build the Oembed URL. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 153 |  |  | 		$endpoint = self::find_endpoint($url); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 154 |  |  | 		$oembedUrl = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 155 |  |  | 		if(!$endpoint) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 156 |  |  | 			if(self::get_autodiscover()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 157 |  |  | 				$oembedUrl = self::autodiscover_from_url($url); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 158 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 159 |  |  | 		} elseif($endpoint === true) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 160 |  |  | 			$oembedUrl = self::autodiscover_from_url($url); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 161 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 162 |  |  | 			// Build the url manually - we gave all needed information. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 163 |  |  | 			$oembedUrl = Controller::join_links($endpoint, '?format=json&url=' . rawurlencode($url)); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 164 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 165 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 166 |  |  | 		// If autodescovery failed the resource might be a direct link to a file | 
            
                                                                                                            
                            
            
                                    
            
            
                | 167 |  |  | 		if(!$oembedUrl) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 168 |  |  | 			if(File::get_app_category(File::get_file_extension($url)) == "image") { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 169 |  |  | 				return new Oembed_Result($url, $url, $type, $options); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 170 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 171 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 172 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 173 |  |  | 		if($oembedUrl) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 174 |  |  | 			// Inject the options into the Oembed URL. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 175 |  |  | 			if($options) { | 
                            
                    |  |  |  | 
                                                                                        
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                | 176 |  |  | 				if(isset($options['width']) && !isset($options['maxwidth'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 177 |  |  | 					$options['maxwidth'] = $options['width']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 178 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 179 |  |  | 				if(isset($options['height']) && !isset($options['maxheight'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 180 |  |  | 					$options['maxheight'] = $options['height']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 181 |  |  | 				} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 182 |  |  | 				$oembedUrl = Controller::join_links($oembedUrl, '?' . http_build_query($options, '', '&')); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 183 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 184 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 185 |  |  | 			return new Oembed_Result($oembedUrl, $url, $type, $options); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 186 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 187 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 188 |  |  | 		// No matching Oembed resource found. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 189 |  |  | 		return false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 190 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 191 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 192 |  |  | 	public static function get_shortcodes() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 193 |  |  | 		return 'embed'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 194 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 195 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 196 |  |  | 	public static function handle_shortcode($arguments, $content, $parser, $shortcode, $extra = array()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 197 |  |  | 		if(isset($arguments['type'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 198 |  |  | 			$type = $arguments['type']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 199 |  |  | 			unset($arguments['type']); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 200 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 201 |  |  | 			$type = false; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 202 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 203 |  |  | 		$oembed = self::get_oembed_from_url($content, $type, $arguments); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 204 |  |  | 		if($oembed && $oembed->exists()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 205 |  |  | 			return $oembed->forTemplate(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 206 |  |  | 		} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 207 |  |  | 			return '<a href="' . $content . '">' . $content . '</a>'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 208 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 209 |  |  | 	} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 210 |  |  | } | 
            
                                                                                                            
                            
            
                                    
            
            
                | 211 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 212 |  |  | /** | 
            
                                                                                                            
                            
            
                                    
            
            
                | 213 |  |  |  * @property string $Type Oembed type | 
            
                                                                                                            
                            
            
                                    
            
            
                | 214 |  |  |  * @property string $Title Title | 
            
                                                                                                            
                            
            
                                    
            
            
                | 215 |  |  |  * @property string $URL URL to asset | 
            
                                                                                                            
                            
            
                                    
            
            
                | 216 |  |  |  * @property string $Provider_URL Url for provider | 
            
                                                                                                            
                            
            
                                    
            
            
                | 217 |  |  |  * @property int $Width | 
            
                                                                                                            
                            
            
                                    
            
            
                | 218 |  |  |  * @property int $Height | 
            
                                                                                                            
                            
            
                                    
            
            
                | 219 |  |  |  * @property string $Info Descriptive text for this oembed | 
            
                                                                                                            
                            
            
                                    
            
            
                | 220 |  |  |  * | 
            
                                                                                                            
                            
            
                                    
            
            
                | 221 |  |  |  * @package framework | 
            
                                                                                                            
                            
            
                                    
            
            
                | 222 |  |  |  * @subpackage oembed | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 223 |  |  |  */ | 
            
                                                                        
                            
            
                                    
            
            
                | 224 |  |  | class Oembed_Result extends ViewableData { | 
            
                                                                        
                            
            
                                    
            
            
                | 225 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 226 |  |  | 	 * JSON data fetched from the Oembed URL. | 
            
                                                                        
                            
            
                                    
            
            
                | 227 |  |  | 	 * This data is accessed dynamically by getField and hasField. | 
            
                                                                        
                            
            
                                    
            
            
                | 228 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 229 |  |  | 	protected $data = false; | 
            
                                                                        
                            
            
                                    
            
            
                | 230 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 231 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 232 |  |  | 	 * Human readable URL | 
            
                                                                        
                            
            
                                    
            
            
                | 233 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 234 |  |  | 	protected $origin = false; | 
            
                                                                        
                            
            
                                    
            
            
                | 235 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 236 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 237 |  |  | 	 * ? | 
            
                                                                        
                            
            
                                    
            
            
                | 238 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 239 |  |  | 	protected $type = false; | 
            
                                                                        
                            
            
                                    
            
            
                | 240 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 241 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 242 |  |  | 	 * Oembed URL | 
            
                                                                        
                            
            
                                    
            
            
                | 243 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 244 |  |  | 	protected $url; | 
            
                                                                        
                            
            
                                    
            
            
                | 245 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 246 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 247 |  |  | 	 * Class to be injected into the resulting HTML element. | 
            
                                                                        
                            
            
                                    
            
            
                | 248 |  |  | 	 */ | 
            
                                                                        
                            
            
                                    
            
            
                | 249 |  |  | 	protected $extraClass; | 
            
                                                                        
                            
            
                                    
            
            
                | 250 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 251 |  |  | 	private static $casting = array( | 
            
                                                                        
                            
            
                                    
            
            
                | 252 |  |  | 		'html' => 'HTMLText', | 
            
                                                                        
                            
            
                                    
            
            
                | 253 |  |  | 	); | 
            
                                                                        
                            
            
                                    
            
            
                | 254 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 255 |  |  | 	public function __construct($url, $origin = false, $type = false, array $options = array()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 256 |  |  | 		$this->url = $url; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 257 |  |  | 		$this->origin = $origin; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 258 |  |  | 		$this->type = $type; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 259 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 260 |  |  | 		if(isset($options['class'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 261 |  |  | 			$this->extraClass = $options['class']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 262 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 263 |  |  | 		if($options) { | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 264 |  |  | 			if(isset($options['width'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 265 |  |  | 				$this->Width = $options['width']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 266 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 267 |  |  | 			if(isset($options['height'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 268 |  |  | 				$this->Height = $options['height']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 269 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 270 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 271 |  |  | 		parent::__construct(); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 272 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 273 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 274 |  |  | 	public function getOembedURL() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 275 |  |  | 		return $this->url; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 276 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 277 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 278 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 279 |  |  | 	 * Fetches the JSON data from the Oembed URL (cached). | 
            
                                                                        
                            
            
                                    
            
            
                | 280 |  |  | 	 * Only sets the internal variable. | 
            
                                                                        
                            
            
                                    
            
            
                | 281 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 282 |  |  | 	protected function loadData() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 283 |  |  | 		if($this->data !== false) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 284 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 285 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 286 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 287 |  |  | 		// Fetch from Oembed URL (cache for a week by default) | 
            
                                                                                                            
                            
            
                                    
            
            
                | 288 |  |  | 		$service = new RestfulService($this->url, 60*60*24*7); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 289 |  |  | 		$body = $service->request(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 290 |  |  | 		if(!$body || $body->isError()) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 291 |  |  | 			$this->data = array(); | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 292 |  |  | 			return; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 293 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 294 |  |  | 		$body = $body->getBody(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 295 |  |  | 		$data = json_decode($body, true); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 296 |  |  | 		if(!$data) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 297 |  |  | 			// if the response is no valid JSON we might have received a binary stream to an image | 
            
                                                                                                            
                            
            
                                    
            
            
                | 298 |  |  | 			$data = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 299 |  |  | 			if (!function_exists('imagecreatefromstring')) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 300 |  |  | 				throw new LogicException('imagecreatefromstring function does not exist - Please make sure GD is installed'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 301 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 302 |  |  | 			$image = imagecreatefromstring($body); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 303 |  |  | 			if($image !== FALSE) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 304 |  |  | 				preg_match("/^(http:\/\/)?([^\/]+)/i", $this->url, $matches); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 305 |  |  | 				$protocoll = $matches[1]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 306 |  |  | 				$host = $matches[2]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 307 |  |  | 				$data['type'] = "photo"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 308 |  |  | 				$data['title'] = basename($this->url) . " ($host)"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 309 |  |  | 				$data['url'] = $this->url; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 310 |  |  | 				$data['provider_url'] = $protocoll.$host; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 311 |  |  | 				$data['width'] = imagesx($image); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 312 |  |  | 				$data['height'] = imagesy($image); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 313 |  |  | 				$data['info'] = _t('UploadField.HOTLINKINFO', | 
            
                                                                                                            
                            
            
                                    
            
            
                | 314 |  |  | 					'Info: This image will be hotlinked. Please ensure you have permissions from the' | 
            
                                                                                                            
                            
            
                                    
            
            
                | 315 |  |  | 					. ' original site creator to do so.'); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 316 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 317 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 318 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 319 |  |  | 		// Convert all keys to lowercase | 
            
                                                                                                            
                            
            
                                    
            
            
                | 320 |  |  | 		$data = array_change_key_case($data, CASE_LOWER); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 321 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 322 |  |  | 		// Check if we can guess thumbnail | 
            
                                                                                                            
                            
            
                                    
            
            
                | 323 |  |  | 		if(empty($data['thumbnail_url']) && $thumbnail = $this->findThumbnail($data)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 324 |  |  | 			$data['thumbnail_url'] = $thumbnail; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 325 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 326 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 327 |  |  | 		// Purge everything if the type does not match. | 
            
                                                                                                            
                            
            
                                    
            
            
                | 328 |  |  | 		if($this->type && $this->type != $data['type']) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 329 |  |  | 			$data = array(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 330 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 331 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 332 |  |  | 		$this->data = $data; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 333 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 334 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 335 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 336 |  |  | 	 * Find thumbnail if omitted from data | 
            
                                                                        
                            
            
                                    
            
            
                | 337 |  |  | 	 * | 
            
                                                                        
                            
            
                                    
            
            
                | 338 |  |  | 	 * @param array $data | 
            
                                                                        
                            
            
                                    
            
            
                | 339 |  |  | 	 * @return string | 
            
                                                                        
                            
            
                                    
            
            
                | 340 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 341 |  |  | 	public function findThumbnail($data) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 342 |  |  | 		if(!empty($data['thumbnail_url'])) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 343 |  |  | 			return $data['thumbnail_url']; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 344 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 345 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 346 |  |  | 		// Hack in facebook graph thumbnail | 
            
                                                                                                            
                            
            
                                    
            
            
                | 347 |  |  | 		if(!empty($data['provider_name']) && $data['provider_name'] === 'Facebook') { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 348 |  |  | 			$id = preg_replace("/.*\\/(\\d+?)\\/?($|\\?.*)/", "$1", $data["url"]); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 349 |  |  | 			return "https://graph.facebook.com/{$id}/picture"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 350 |  |  | 		} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 351 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 352 |  |  | 		// no thumbnail found | 
            
                                                                                                            
                            
            
                                    
            
            
                | 353 |  |  | 		return null; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 354 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 355 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 356 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 357 |  |  | 	 * Wrap the check for looking into Oembed JSON within $this->data. | 
            
                                                                        
                            
            
                                    
            
            
                | 358 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 359 |  |  | 	public function hasField($field) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 360 |  |  | 		$this->loadData(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 361 |  |  | 		return array_key_exists(strtolower($field), $this->data); | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 362 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 363 |  |  |  | 
            
                                                                        
                            
            
                                    
            
            
                | 364 |  |  | 	/** | 
            
                                                                        
                            
            
                                    
            
            
                | 365 |  |  | 	 * Wrap the field calls to fetch data from Oembed JSON (within $this->data) | 
            
                                                                        
                            
            
                                    
            
            
                | 366 |  |  | 	 */ | 
            
                                                                                                            
                            
            
                                    
            
            
                | 367 |  |  | 	public function getField($field) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 368 |  |  | 		$field = strtolower($field); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 369 |  |  | 		if($this->hasField($field)) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 370 |  |  | 			return $this->data[$field]; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 371 |  |  | 		} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 372 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 373 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 374 |  |  | 	public function forTemplate() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 375 |  |  | 		$this->loadData(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 376 |  |  | 		switch($this->Type) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 377 |  |  | 		case 'video': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 378 |  |  | 		case 'rich': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 379 |  |  | 			if($this->extraClass) { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 380 |  |  | 				return "<div class='media $this->extraClass'>$this->HTML</div>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 381 |  |  | 			} else { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 382 |  |  | 				return "<div class='media'>$this->HTML</div>"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 383 |  |  | 			} | 
            
                                                                                                            
                            
            
                                    
            
            
                | 384 |  |  | 			break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 385 |  |  | 		case 'link': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 386 |  |  | 			return '<a class="' . $this->extraClass . '" href="' . $this->origin . '">' . $this->Title . '</a>'; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 387 |  |  | 			break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 388 |  |  | 		case 'photo': | 
            
                                                                                                            
                            
            
                                    
            
            
                | 389 |  |  | 			return "<img src='$this->URL' width='$this->Width' height='$this->Height' class='$this->extraClass' />"; | 
            
                                                                                                            
                            
            
                                    
            
            
                | 390 |  |  | 			break; | 
                            
                    |  |  |  | 
                                                                                        
                                                                                     | 
            
                                                                                                            
                            
            
                                    
            
            
                | 391 |  |  | 		} | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 392 |  |  | 	} | 
            
                                                                        
                            
            
                                    
            
            
                | 393 |  |  |  | 
            
                                                                                                            
                            
            
                                    
            
            
                | 394 |  |  | 	public function exists() { | 
            
                                                                                                            
                            
            
                                    
            
            
                | 395 |  |  | 		$this->loadData(); | 
            
                                                                                                            
                            
            
                                    
            
            
                | 396 |  |  | 		return count($this->data) > 0; | 
            
                                                                                                            
                                                                
            
                                    
            
            
                | 397 |  |  | 	} | 
            
                                                        
            
                                    
            
            
                | 398 |  |  | } | 
            
                                                        
            
                                    
            
            
                | 399 |  |  |  | 
            
                                                        
            
                                    
            
            
                | 400 |  |  |  | 
            
                        
There are different options of fixing this problem.
If you want to be on the safe side, you can add an additional type-check:
If you are sure that the expression is traversable, you might want to add a doc comment cast to improve IDE auto-completion and static analysis:
Mark the issue as a false-positive: Just hover the remove button, in the top-right corner of this issue for more options.