/wp-content/plugins/jetpack/modules/videopress/class.videopress-video.php

<?php

/**

 * VideoPress video object retrieved from VideoPress servers and parsed.

 * @since 1.3

 */

class VideoPress_Video {

	public $version = 3;



	/**

	 * Manifest version returned by remote service.

	 *

	 * @var string

	 * @since 1.3

	 */

	const manifest_version = '1.5';



	/**

	 * Expiration of the video expressed in Unix time

	 *

	 * @var int

	 * @since 1.3

	 */

	public $expires;



	/**

	 * VideoPress unique identifier

	 *

	 * @var string

	 * @since 1.3

	 */

	public $guid;



	/**

	 * WordPress.com blog identifier

	 *

	 * @var int

	 * @since 1.5

	 */

	public $blog_id;



	/**

	 * Remote blog attachment identifier

	 *

	 * @var int

	 * @since 1.5

	 */

	public $post_id;



	/**

	 * Maximum desired width.

	 *

	 * @var int

	 * @since 1.3

	 */

	public $maxwidth;



	/**

	 * Video width calculated based on original video dimensions and the requested maxwidth

	 *

	 * @var int

	 * @since 1.3

	 */

	public $calculated_width;



	/**

	 * Video height calculated based on original video dimensions and the requested maxwidth

	 *

	 * @var int

	 * @since 1.3

	 */

	public $calculated_height;



	/**

	 * Video title

	 *

	 * @var string

	 * @since 1.3

	 */

	public $title;



	/**

	 * Directionality of title text. ltr or rtl

	 *

	 * @var string

	 * @since 1.3

	 */

	public $text_direction;



	/**

	 * Text and audio language as ISO 639-2 language code

	 *

	 * @var string

	 * @since 1.3

	 */

	public $language;



	/**

	 * Video duration in whole seconds

	 *

	 * @var int

	 * @since 1.3

	 */

	public $duration;



	/**

	 * Recommended minimum age of the viewer.

	 *

	 * @var int

	 * @since 1.3

	 */

	public $age_rating;



	/**

	 * Video author has restricted video embedding or sharing

	 *

	 * @var bool

	 * @since 1.3

	 */

	public $restricted_embed;



	/**

	 * Poster frame image URI for the given video guid and calculated dimensions.

	 *

	 * @var string

	 * @since 1.3

	 */

	public $poster_frame_uri;



	/**

	 * Video files associated with the given guid for the calculated dimensions.

	 *

	 * @var stdClass

	 * @since 1.3

	 */

	public $videos;



	/**

	 * Video player information

	 *

	 * @var stdClass

	 * @since 1.3

	 */

	public $players;



	/**

	 * Video player skinning preferences including background color and watermark

	 *

	 * @var array

	 * @since 1.5

	 */

	public $skin;



	/**

	 * Closed captions if available for the given video. Associative array of ISO 639-2 language code and a WebVTT URI

	 *

	 * @var array

	 * @since 1.5

	 */

	public $captions;



	/**

	 * Setup the object.

	 * Request video information from VideoPress servers and process the response.

	 *

	 * @since 1.3

	 * @var string $guid VideoPress unique identifier

	 * @var int $maxwidth maximum requested video width. final width and height are calculated on VideoPress servers based on the aspect ratio of the original video upload.

	 */

	public function __construct( $guid, $maxwidth = 0 ) {

		$this->guid = $guid;



		$maxwidth = absint( $maxwidth );

		if ( $maxwidth > 0 )

			$this->maxwidth = $maxwidth;



		$data = $this->get_data();

		if ( is_wp_error( $data ) || empty( $data ) ) {

			$this->error = $data;

			return;

		}



		if ( isset( $data->blog_id ) )

			$this->blog_id = absint( $data->blog_id );



		if ( isset( $data->post_id ) )

			$this->post_id = absint( $data->post_id );



		if ( isset( $data->title ) && $data->title !== '' )

			$this->title = trim( str_replace( '&nbsp;', ' ', $data->title ) );



		if ( isset( $data->text_direction ) && $data->text_direction === 'rtl' )

			$this->text_direction = 'rtl';

		else

			$this->text_direction = 'ltr';



		if ( isset( $data->language ) )

			$this->language = $data->language;



		if ( isset( $data->duration ) && $data->duration > 0 )

			$this->duration = absint( $data->duration );



		if ( isset( $data->width ) && $data->width > 0 )

			$this->calculated_width = absint( $data->width );



		if ( isset( $data->height ) && $data->height > 0 )

			$this->calculated_height = absint( $data->height );



		if ( isset( $data->age_rating ) )

			$this->age_rating = absint( $this->age_rating );



		if ( isset( $data->restricted_embed ) && $data->restricted_embed === true )

			$this->restricted_embed = true;

		else

			$this->restricted_embed = false;



		if ( isset( $data->posterframe ) && $data->posterframe !== '' )

			$this->poster_frame_uri = esc_url_raw( $data->posterframe, array( 'http', 'https' ) );



		if ( isset( $data->mp4 ) || isset( $data->ogv ) ) {

			$this->videos = new stdClass();

			if ( isset( $data->mp4 ) )

				$this->videos->mp4 = $data->mp4;

			if ( isset( $data->ogv ) )

				$this->videos->ogv = $data->ogv;

		}



		if ( isset( $data->swf ) ) {

			if ( ! isset( $this->players ) )

				$this->players = new stdClass();

			$this->players->swf = $data->swf;

		}



		if ( isset( $data->skin ) )

			$this->skin = $data->skin;



		if ( isset( $data->captions ) )

			$this->captions = (array) $data->captions;

	}



	/**

	 * Convert an Expires HTTP header value into Unix time for use in WP Cache

	 *

	 * @since 1.3

	 * @var string $expires_header

	 * @return int|bool Unix time or false

	 */

	public static function calculate_expiration( $expires_header ) {

		if ( empty( $expires_header ) || ! is_string( $expires_header ) )

			return false;



		if ( class_exists( 'DateTime' ) && class_exists( 'DateTimeZone' ) ) {

			$expires_date = DateTime::createFromFormat( 'D, d M Y H:i:s T', $expires_header, new DateTimeZone( 'UTC' ) );

			if ( $expires_date instanceOf DateTime )

				return date_format( $expires_date, 'U' );

		} else {

			$expires_array = strptime( $expires_header, '%a, %d %b %Y %H:%M:%S %Z' );

			if ( is_array( $expires_array ) && isset( $expires_array['tm_hour'] ) && isset( $expires_array['tm_min'] ) && isset( $expires_array['tm_sec'] ) && isset( $expires_array['tm_mon'] ) && isset( $expires_array['tm_mday'] ) && isset( $expires_array['tm_year'] ) )

				return gmmktime( $expires_array['tm_hour'], $expires_array['tm_min'], $expires_array['tm_sec'], 1 + $expires_array['tm_mon'], $expires_array['tm_mday'], 1900 + $expires_array['tm_year'] );

		}

		return false;

	}



	/**

	 * Extract the site's host domain for statistics and comparison against an allowed site list in the case of restricted embeds.

	 *

	 * @since 1.2

	 * @param string $url absolute URL

	 * @return bool|string host component of the URL, or false if none found

	 */

	public static function hostname( $url ) {

		return parse_url( esc_url_raw( $url ), PHP_URL_HOST );

	}





	/**

	 * Request data from WordPress.com for the given guid, maxwidth, and calculated blog hostname.

	 *

	 * @since 1.3

	 * @return stdClass|WP_Error parsed JSON response or WP_Error if request unsuccessful

	 */

	private function get_data() {

		global $wp_version;



		$domain = self::hostname( home_url() );

		$request_params = array( 'guid' => $this->guid, 'domain' => $domain );

		if ( isset( $this->maxwidth ) && $this->maxwidth > 0 )

			$request_params['maxwidth'] = $this->maxwidth;



		$url = 'http://videopress.com/data/wordpress.json';

		if ( is_ssl() )

			$url = 'https://v.wordpress.com/data/wordpress.json';



		$response = wp_remote_get( add_query_arg( $request_params, $url ), array(

			'redirection' => 1,

			'user-agent' => 'VideoPress plugin ' . $this->version . '; WordPress ' . $wp_version . ' (' . home_url('/') . ')',

		) );



		unset( $request_params );

		unset( $url );

		$response_body = wp_remote_retrieve_body( $response );

		$response_code = absint( wp_remote_retrieve_response_code( $response ) );



		if ( is_wp_error( $response ) ) {

			return $response;

		} elseif ( $response_code === 400 ) {

			return new WP_Error( 'bad_config', __( 'The VideoPress plugin could not communicate with the VideoPress servers. This error is most likely caused by a misconfigured plugin. Please reinstall or upgrade.', 'jetpack' ) );

		} elseif ( $response_code === 403 ) {

			return new WP_Error( 'http_forbidden', '<p>' . sprintf( __( '<strong>%s</strong> is not an allowed embed site.' , 'jetpack' ), esc_html( $domain ) ) . '</p><p>' . __( 'Publisher limits playback of video embeds.', 'jetpack' ) . '</p>' );

		} elseif ( $response_code === 404 ) {

			return new WP_Error( 'http_not_found', '<p>' . sprintf( __( 'No data found for VideoPress identifier: <strong>%s</strong>.', 'jetpack' ), $this->guid ) . '</p>' );

		} elseif ( $response_code !== 200 || empty( $response_body ) ) {

			return;

		} else {

			$expires_header = wp_remote_retrieve_header( $response, 'Expires' );

			if ( ! empty( $expires_header ) ) {

				$expires = self::calculate_expiration( $expires_header );

				if ( ! empty( $expires ) )

					$this->expires = $expires;



			}

			return json_decode( $response_body );

		}

	}

}