/wp-content/plugins/wordpress-https/lib/WordPressHTTPS/Url.php

<?php

/**

 * URL Class for the WordPress plugin WordPress HTTPS

 * 

 * This class and its properties are heavily based on parse_url()

 *

 * @author Mike Ems

 * @package WordPressHTTPS

 *

 */

class WordPressHTTPS_Url {



	/**

	 * The scheme of a network host; for example, http or https

	 *

	 * @var string

	 */

	protected $_scheme;



	/**

	 * The domain name of a network host, or an IPv4 address as a set of four decimal digit groups separated by literal periods; for example, www.php.net or babelfish.altavista.com

	 *

	 * @var string

	 */

	protected $_host;



	/**

	 * The base domain of a network host; for example, php.net or altavista.com

	 *

	 * @var string

	 */

	protected $_base_host;



	/**

	 * The port being accessed. In the URL http://www.some_host.com:443/, 443 is the port component.

	 *

	 * @var int

	 */

	protected $_port;



	/**

	 * The username being passed for authentication. In the URL ftp://some_user:some_password@ftp.host.com/, some_user would be the user component.

	 *

	 * @var string

	 */

	protected $_user;



	/**

	 * The password being passed for authentication. In the above example, some_password would be the pass component.

	 *

	 * @var string

	 */

	protected $_pass;



	/**

	 * The path component contains the location to the requested resource on the given host. In the URL http://www.foo.com/test/test.php, /test/test.php is the path component.

	 *

	 * @var string

	 */

	protected $_path;



	/**

	 * The filename, if available, is the specified resource being requested. In the URL http://www.foo.com/test/test.jpg, test.jpg is the filename.

	 *

	 * @var string

	 */

	protected $_filename;



	/**

	 * The file extension of the filename, if available. In the URL http://www.foo.com/test/test.jpg, .jpg is the file extension.

	 *

	 * @var string

	 */

	protected $_extension;



	/**

	 * The query string for the request. In the URL http://www.foo.com/?page=bar, page=bar is the query component.

	 *

	 * @var string

	 */

	protected $_query;



	/**

	 * The fragment string for the request. In the URL http://www.foo.com/?page=bar#test, #test is the fragment component.

	 *

	 * @var string

	 */

	protected $_fragment;



	/**

	 * The response body of the request.

	 *

	 * @var string

	 */

	protected $_content;

	

	/**

	 * Set Scheme

	 * 

	 * @param string $scheme

	 * @return object $this

	 */

	public function setScheme( $scheme ) {

		$this->_scheme = $scheme;

		return $this;

	}

	

	/**

	 * Get Scheme

	 * 

	 * @param none

	 * @return string

	 */

	public function getScheme() {

		return $this->_scheme;

	}

	

	/**

	 * Set Host

	 * 

	 * @param string $host

	 * @return object $this

	 */

	public function setHost( $host ) {

		$this->_host = $host;

		return $this;

	}

	

	/**

	 * Get Host

	 * 

	 * @param none

	 * @return string

	 */

	public function getHost() {

		return $this->_host;

	}

	

	/**

	 * Set Base Host

	 * 

	 * @param string $base_host

	 * @return object $this

	 */

	public function setBaseHost( $base_host ) {

		$this->_base_host = $base_host;

		return $this;

	}

	

	/**

	 * Gets the base host of the URL

	 *

	 * @param none

	 * @return string

	 */

	public function getBaseHost() {

		$return_url = clone $this;

		$test_url = clone $this;

		$test_url->setPath('');

		$host_parts = explode('.', $test_url->getHost());

		for ( $i = 0; $i <= sizeof($host_parts); $i++ ) {

			$test_url->setHost( str_replace($host_parts[$i] . '.', '', $test_url->getHost()) );

			if ( $test_url->isValid() ) {

				$return_url = clone $test_url;

			} else {

				break;

			}

		}

		return $return_url->getHost();

	}

	

	/**

	 * Set Port

	 * 

	 * @param string $port

	 * @return object $this

	 */

	public function setPort( $port ) {

		$this->_port = $port;

		return $this;

	}

	

	/**

	 * Get Port

	 * 

	 * @param none

	 * @return string

	 */

	public function getPort() {

		return $this->_port;

	}

	

	/**

	 * Set User

	 * 

	 * @param string $user

	 * @return object $this

	 */

	public function setUser( $user ) {

		$this->_user = $user;

		return $this;

	}

	

	/**

	 * Get User

	 * 

	 * @param none

	 * @return string

	 */

	public function getUser() {

		return $this->_user;

	}

	

	/**

	 * Set Pass

	 * 

	 * @param string $pass

	 * @return object $this

	 */

	public function setPass( $pass ) {

		$this->_pass = $pass;

		return $this;

	}

	

	/**

	 * Get Pass

	 * 

	 * @param none

	 * @return string

	 */

	public function getPass() {

		return $this->_pass;

	}

	

	/**

	 * Set Path

	 * 

	 * Ensures the path begins with a forward slash

	 *

	 * @param none

	 * @return string

	 */

	public function setPath( $path ) {

		$this->_path = ltrim($path, '/');

		$this->_path = '/' . $this->_path;

		$filename = basename($this->_path);

		$pathinfo = pathinfo($filename);

		if ( $pathinfo && isset($pathinfo['extension']) ) {

			$this->setExtension($pathinfo['extension']);

			$this->setFilename($filename);

		}



		return $this;

	}



	/**

	 * Get Path

	 * 

	 * Ensures the path begins with a forward slash

	 *

	 * @param none

	 * @return string

	 */

	public function getPath() {

		return $this->_path;

	}

	

	/**

	 * Set Filename

	 * 

	 * @param string $filename

	 * @return object $this

	 */

	public function setFilename( $filename ) {

		$this->_filename = $filename;

		return $this;

	}

	

	/**

	 * Get Filename

	 * 

	 * @param none

	 * @return string

	 */

	public function getFilename() {

		return $this->_filename;

	}

	

	/**

	 * Set Extension

	 * 

	 * @param string $extension

	 * @return object $this

	 */

	public function setExtension( $extension ) {

		$this->_extension = $extension;

		return $this;

	}

	

	/**

	 * Get Extension

	 * 

	 * @param none

	 * @return string

	 */

	public function getExtension() {

		return $this->_extension;

	}



	/**

	 * Set Query

	 * 

	 * @param string $query

	 * @return object $this

	 */

	public function setQuery( $query ) {

		$this->_query = $query;

		return $this;

	}

	

	/**

	 * Get Query

	 * 

	 * @param none

	 * @return string

	 */

	public function getQuery() {

		return $this->_query;

	}

	

	/**

	 * Set Fragment

	 * 

	 * @param string $fragment

	 * @return object $this

	 */

	public function setFragment( $fragment ) {

		$this->_fragment = $fragment;

		return $this;

	}

	

	/**

	 * Get Fragment

	 * 

	 * @param none

	 * @return string

	 */

	public function getFragment() {

		return $this->_fragment;

	}

	

	/**

	 * Set Content

	 * 

	 * @param string $content

	 * @return object $this

	 */

	public function setContent( $content ) {

		$this->_content = $content;

		return $this;

	}

	

	/**

	 * Get the contents of the URL

	 *

	 * @param boolean $verify_ssl

	 * @return boolean

	 */

	public function getContent( $verify_ssl = false ) {

		if ( $this->_content ) {

			return $this->_content;

		}

		

		$this->_content = false;

		

		if ( function_exists('curl_init') ) {

			$ch = curl_init();



			curl_setopt($ch, CURLOPT_URL, $this->toString());

			curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER["HTTP_USER_AGENT"]);

			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $verify_ssl);

			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

			curl_setopt($ch, CURLOPT_FAILONERROR, true);

			curl_setopt($ch, CURLOPT_TIMEOUT, 5);

			@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

			curl_setopt($ch, CURLOPT_HEADER, false);

			curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');



			$content = curl_exec($ch);

			$info = curl_getinfo($ch);

			curl_close($ch);



			if ( isset($info['http_code']) && !( $info['http_code'] == 0 || $info['http_code'] == 404 ) ) {

				$this->_content = $content;

			}

		}

		

		if ( !$this->_content && @ini_get('allow_url_fopen') ) {

			if ( ($content = @file_get_contents($this->toString())) !== false ) {

				$this->_content = $content;

			}

		}

		return $this->_content;

	}



	/**

	 * Validates the existence of the URL with cURL or file_get_contents()

	 *

	 * @param boolean $verify_ssl

	 * @return boolean

	 */

	public function isValid( $verify_ssl = false ) {

		if ( function_exists('curl_init') ) {

			$ch = curl_init();



			curl_setopt($ch, CURLOPT_URL, $this->toString());

			curl_setopt($ch, CURLOPT_USERAGENT, $_SERVER["HTTP_USER_AGENT"]);

			curl_setopt($ch, CURLOPT_SSL_VERIFYPEER, $verify_ssl);

			curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);

			curl_setopt($ch, CURLOPT_FAILONERROR, true);

			curl_setopt($ch, CURLOPT_TIMEOUT, 5);

			@curl_setopt($ch, CURLOPT_FOLLOWLOCATION, true);

			curl_setopt($ch, CURLOPT_HEADER, false);

			curl_setopt($ch, CURLOPT_ENCODING, 'gzip,deflate');



			$content = curl_exec($ch);

			$info = curl_getinfo($ch);

			curl_close($ch);

			

			if ( !$info['http_code'] || ( $info['http_code'] == 0 || $info['http_code'] == 404 ) ) {

				return false;

			} else {

				return true;

			}

		} else if ( @ini_get('allow_url_fopen') ) {

			if ( @file_get_contents($url) !== false ) {

				return true;

			}

		}

		return false;

	}



	/**

	 * Compares URL objects to determine if either of them are a subdomain of the other.

	 * 

	 * @param WordPressHTTPS_Url $url

	 * @return boolean

	 */

	public function isSubdomain( WordPressHTTPS_Url $url ) {

		$this_host = $this->getBaseHost();

		$other_host = $url->getBaseHost();

		if ( $this_host == $other_host ) {

			return true;

		}

		return false;

	}



	/**

	 * Factory object from an array provided by the parse_url function

	 * 

	 * Example of usage:

	 * $site_url = WordPressHTTPS_Url::fromArray( parse_url( site_url() ) );

	 *

	 * @param array $array

	 * @return $url WordPressHTTPS_Url

	 */

	public static function fromArray( $array = array() ) {

		if ( sizeof($array) <= 1 ) {

			return false;

		}



		$url = new WordPressHTTPS_Url;

		$url->setScheme(@$array['scheme']);

		$url->setUser(@$array['user']);

		$url->setPass(@$array['pass']);

		$url->setHost(@$array['host']);

		$url->setPort(@$array['port']);

		$url->setPath(@$array['path']);

		$url->setQuery(@$array['query']);

		$url->setFragment(@$array['fragment']);



		return $url;

	}



	/**

	 * Factory object from a string that contains a URL

	 * 

	 * Example of usage:

	 * $site_url = WordPressHTTPS_Url::fromString( site_url() );

	 *

	 * @param string $string

	 * @return $url WordPressHTTPS_Url

	 */

	public static function fromString( $string ) {

		$url = new WordPressHTTPS_Url;



		@preg_match_all('/((http|https):\/\/[^\'"]+)[\'"\)]?/i', $string, $url_parts);

		if ( isset($url_parts[1][0]) ) {

			if ( $url_parts = parse_url( $url_parts[1][0] ) ) {

				$url->setScheme(@$url_parts['scheme']);

				$url->setUser(@$url_parts['user']);

				$url->setPass(@$url_parts['pass']);

				$url->setHost(@$url_parts['host']);

				$url->setPort(@$url_parts['port']);

				$url->setPath(@$url_parts['path']);

				$url->setQuery(@$url_parts['query']);

				$url->setFragment(@$url_parts['fragment']);

				return $url;

			}

		} else {

			 return false;

		}



		return $url;

	}



	/**

	 * Returns an array of all URL properties

	 *

	 * @param none

	 * @return array parse_url 

	 */

	public function toArray() {

		return parse_url( $this->toString() );	

	}



	/**

	 * Formats the current URL object to a string

	 *

	 * @param none

	 * @return string

	 */

	public function toString() {

		$string = ( $this->getScheme() ? $this->getScheme() . '://' : '' ) . 

		( $this->getUser() ? $this->getUser() . ( $this->getPass() ? ':' . $this->getPass() : '' ) . '@' : '' ) . 

		$this->getHost() .

		( $this->getPort() && ( ( $this->getPort() != 80 && $this->getScheme() == 'http' ) || ( $this->getPort() != 443 && $this->getScheme() == 'https' ) )  ? ':' . $this->getPort() : '' ) . 

		$this->getPath() . 

		( $this->getQuery() ? '?' . $this->getQuery() : '' ) . 

		( $this->getFragment() ? '#' . $this->getFragment() : '' );

	

		return $string;

	}



	/**

	 * Magic __toString method that is called when the object is casted to a string

	 *

	 * @param none

	 * @return string

	 */

	public function __toString() {

		return $this->toString();

	}

	

}