<?php

/**

 * HTTP API: WP_Http_Cookie class

 *

 * @package WordPress

 * @subpackage HTTP

 * @since 4.4.0

 */

/**

 * Core class used to encapsulate a single cookie object for internal use.

 *

 * Returned cookies are represented using this class, and when cookies are set, if they are not

 * already a WP_Http_Cookie() object, then they are turned into one.

 *

 * @todo The WordPress convention is to use underscores instead of camelCase for function and method

 * names. Need to switch to use underscores instead for the methods.

 *

 * @since 2.8.0

 */

class WP_Http_Cookie {

	/**

	 * Cookie name.

	 *

	 * @since 2.8.0

	 * @var string

	 */

	public $name;

	/**

	 * Cookie value.

	 *

	 * @since 2.8.0

	 * @var string

	 */

	public $value;

	/**

	 * When the cookie expires.

	 *

	 * @since 2.8.0

	 * @var string

	 */

	public $expires;

	/**

	 * Cookie URL path.

	 *

	 * @since 2.8.0

	 * @var string

	 */

	public $path;

	/**

	 * Cookie Domain.

	 *

	 * @since 2.8.0

	 * @var string

	 */

	public $domain;

	/**

	 * Sets up this cookie object.

	 *

	 * The parameter $data should be either an associative array containing the indices names below

	 * or a header string detailing it.

	 *

	 * @since 2.8.0

	 *

	 * @param string|array $data {

	 *     Raw cookie data as header string or data array.

	 *

	 *     @type string     $name    Cookie name.

	 *     @type mixed      $value   Value. Should NOT already be urlencoded.

	 *     @type string|int $expires Optional. Unix timestamp or formatted date. Default null.

	 *     @type string     $path    Optional. Path. Default '/'.

	 *     @type string     $domain  Optional. Domain. Default host of parsed $requested_url.

	 *     @type int        $port    Optional. Port. Default null.

	 * }

	 * @param string       $requested_url The URL which the cookie was set on, used for default $domain

	 *                                    and $port values.

	 */

	public function __construct( $data, $requested_url = '' ) {

		if ( $requested_url )

			$arrURL = @parse_url( $requested_url );

		if ( isset( $arrURL['host'] ) )

			$this->domain = $arrURL['host'];

		$this->path = isset( $arrURL['path'] ) ? $arrURL['path'] : '/';

		if (  '/' != substr( $this->path, -1 ) )

			$this->path = dirname( $this->path ) . '/';

		if ( is_string( $data ) ) {

			// Assume it's a header string direct from a previous request.

			$pairs = explode( ';', $data );

			// Special handling for first pair; name=value. Also be careful of "=" in value.

			$name  = trim( substr( $pairs[0], 0, strpos( $pairs[0], '=' ) ) );

			$value = substr( $pairs[0], strpos( $pairs[0], '=' ) + 1 );

			$this->name  = $name;

			$this->value = urldecode( $value );

			// Removes name=value from items.

			array_shift( $pairs );

			// Set everything else as a property.

			foreach ( $pairs as $pair ) {

				$pair = rtrim($pair);

				// Handle the cookie ending in ; which results in a empty final pair.

				if ( empty($pair) )

					continue;

				list( $key, $val ) = strpos( $pair, '=' ) ? explode( '=', $pair ) : array( $pair, '' );

				$key = strtolower( trim( $key ) );

				if ( 'expires' == $key )

					$val = strtotime( $val );

				$this->$key = $val;

			}

		} else {

			if ( !isset( $data['name'] ) )

				return;

			// Set properties based directly on parameters.

			foreach ( array( 'name', 'value', 'path', 'domain', 'port' ) as $field ) {

				if ( isset( $data[ $field ] ) )

					$this->$field = $data[ $field ];

			}

			if ( isset( $data['expires'] ) )

				$this->expires = is_int( $data['expires'] ) ? $data['expires'] : strtotime( $data['expires'] );

			else

				$this->expires = null;

		}

	}

	/**

	 * Confirms that it's OK to send this cookie to the URL checked against.

	 *

	 * Decision is based on RFC 2109/2965, so look there for details on validity.

	 *

	 * @since 2.8.0

	 *

	 * @param string $url URL you intend to send this cookie to

	 * @return bool true if allowed, false otherwise.

	 */

	public function test( $url ) {

		if ( is_null( $this->name ) )

			return false;

		// Expires - if expired then nothing else matters.

		if ( isset( $this->expires ) && time() > $this->expires )

			return false;

		// Get details on the URL we're thinking about sending to.

		$url = parse_url( $url );

		$url['port'] = isset( $url['port'] ) ? $url['port'] : ( 'https' == $url['scheme'] ? 443 : 80 );

		$url['path'] = isset( $url['path'] ) ? $url['path'] : '/';

		// Values to use for comparison against the URL.

		$path   = isset( $this->path )   ? $this->path   : '/';

		$port   = isset( $this->port )   ? $this->port   : null;

		$domain = isset( $this->domain ) ? strtolower( $this->domain ) : strtolower( $url['host'] );

		if ( false === stripos( $domain, '.' ) )

			$domain .= '.local';

		// Host - very basic check that the request URL ends with the domain restriction (minus leading dot).

		$domain = substr( $domain, 0, 1 ) == '.' ? substr( $domain, 1 ) : $domain;

		if ( substr( $url['host'], -strlen( $domain ) ) != $domain )

			return false;

		// Port - supports "port-lists" in the format: "80,8000,8080".

		if ( !empty( $port ) && !in_array( $url['port'], explode( ',', $port) ) )

			return false;

		// Path - request path must start with path restriction.

		if ( substr( $url['path'], 0, strlen( $path ) ) != $path )

			return false;

		return true;

	}

	/**

	 * Convert cookie name and value back to header string.

	 *

	 * @since 2.8.0

	 *

	 * @return string Header encoded cookie name and value.

	 */

	public function getHeaderValue() {

		if ( ! isset( $this->name ) || ! isset( $this->value ) )

			return '';

		/**

		 * Filters the header-encoded cookie value.

		 *

		 * @since 3.4.0

		 *

		 * @param string $value The cookie value.

		 * @param string $name  The cookie name.

		 */

		return $this->name . '=' . apply_filters( 'wp_http_cookie_value', $this->value, $this->name );

	}

	/**

	 * Retrieve cookie header for usage in the rest of the WordPress HTTP API.

	 *

	 * @since 2.8.0

	 *

	 * @return string

	 */

	public function getFullHeader() {

		return 'Cookie: ' . $this->getHeaderValue();

	}

	/**

	 * Retrieves cookie attributes.

	 *

	 * @since 4.6.0

	 *

	 * @return array {

	 *    List of attributes.

	 *

	 *    @type string $expires When the cookie expires.

	 *    @type string $path    Cookie URL path.

	 *    @type string $domain  Cookie domain.

	 * }

	 */

	public function get_attributes() {

		return array(

			'expires' => $this->expires,

			'path'    => $this->path,

			'domain'  => $this->domain,

		);

	}

}