wp/wp-includes/class-oembed.php
changeset 5 5e2f62d02dcd
parent 0 d970ebf37754
child 7 cf61fcea0001
equal deleted inserted replaced
4:346c88efed21 5:5e2f62d02dcd
     1 <?php
     1 <?php
     2 /**
     2 /**
     3  * API for fetching the HTML to embed remote content based on a provided URL.
     3  * API for fetching the HTML to embed remote content based on a provided URL.
     4  * Used internally by the {@link WP_Embed} class, but is designed to be generic.
     4  * Used internally by the {@link WP_Embed} class, but is designed to be generic.
     5  *
     5  *
     6  * @link http://codex.wordpress.org/oEmbed oEmbed Codex Article
     6  * @link https://codex.wordpress.org/oEmbed oEmbed Codex Article
     7  * @link http://oembed.com/ oEmbed Homepage
     7  * @link http://oembed.com/ oEmbed Homepage
     8  *
     8  *
     9  * @package WordPress
     9  * @package WordPress
    10  * @subpackage oEmbed
    10  * @subpackage oEmbed
    11  */
    11  */
    16  * @package WordPress
    16  * @package WordPress
    17  * @subpackage oEmbed
    17  * @subpackage oEmbed
    18  * @since 2.9.0
    18  * @since 2.9.0
    19  */
    19  */
    20 class WP_oEmbed {
    20 class WP_oEmbed {
    21 	var $providers = array();
    21 	public $providers = array();
       
    22 	public static $early_providers = array();
       
    23 
       
    24 	private $compat_methods = array( '_fetch_with_format', '_parse_json', '_parse_xml', '_parse_body' );
    22 
    25 
    23 	/**
    26 	/**
    24 	 * Constructor
    27 	 * Constructor
    25 	 *
    28 	 *
    26 	 * @uses apply_filters() Filters a list of pre-defined oEmbed providers.
    29 	 * @since 2.9.0
    27 	 */
    30 	 */
    28 	function __construct() {
    31 	public function __construct() {
    29 		$providers = array(
    32 		$providers = array(
    30 			'#https?://(www\.)?youtube\.com/watch.*#i'           => array( 'http://www.youtube.com/oembed',                     true  ),
    33 			'#http://(www\.)?youtube\.com/watch.*#i'              => array( 'http://www.youtube.com/oembed',                      true  ),
    31 			'http://youtu.be/*'                                  => array( 'http://www.youtube.com/oembed',                     false ),
    34 			'#https://(www\.)?youtube\.com/watch.*#i'             => array( 'http://www.youtube.com/oembed?scheme=https',         true  ),
    32 			'http://blip.tv/*'                                   => array( 'http://blip.tv/oembed/',                            false ),
    35 			'#http://(www\.)?youtube\.com/playlist.*#i'           => array( 'http://www.youtube.com/oembed',                      true  ),
    33 			'#https?://(www\.)?vimeo\.com/.*#i'                  => array( 'http://vimeo.com/api/oembed.{format}',              true  ),
    36 			'#https://(www\.)?youtube\.com/playlist.*#i'          => array( 'http://www.youtube.com/oembed?scheme=https',         true  ),
    34 			'#https?://(www\.)?dailymotion\.com/.*#i'            => array( 'http://www.dailymotion.com/services/oembed',        true  ),
    37 			'#http://youtu\.be/.*#i'                              => array( 'http://www.youtube.com/oembed',                      true  ),
    35 			'http://dai.ly/*'                                    => array( 'http://www.dailymotion.com/services/oembed',        false ),
    38 			'#https://youtu\.be/.*#i'                             => array( 'http://www.youtube.com/oembed?scheme=https',         true  ),
    36 			'#https?://(www\.)?flickr\.com/.*#i'                 => array( 'http://www.flickr.com/services/oembed/',            true  ),
    39 			'http://blip.tv/*'                                    => array( 'http://blip.tv/oembed/',                             false ),
    37 			'http://flic.kr/*'                                   => array( 'http://www.flickr.com/services/oembed/',            false ),
    40 			'#https?://(.+\.)?vimeo\.com/.*#i'                    => array( 'http://vimeo.com/api/oembed.{format}',               true  ),
    38 			'#https?://(.+\.)?smugmug\.com/.*#i'                 => array( 'http://api.smugmug.com/services/oembed/',           true  ),
    41 			'#https?://(www\.)?dailymotion\.com/.*#i'             => array( 'http://www.dailymotion.com/services/oembed',         true  ),
    39 			'#https?://(www\.)?hulu\.com/watch/.*#i'             => array( 'http://www.hulu.com/api/oembed.{format}',           true  ),
    42 			'http://dai.ly/*'                                     => array( 'http://www.dailymotion.com/services/oembed',         false ),
    40 			'#https?://(www\.)?viddler\.com/.*#i'                => array( 'http://lab.viddler.com/services/oembed/',           true  ),
    43 			'#https?://(www\.)?flickr\.com/.*#i'                  => array( 'https://www.flickr.com/services/oembed/',            true  ),
    41 			'http://qik.com/*'                                   => array( 'http://qik.com/api/oembed.{format}',                false ),
    44 			'#https?://flic\.kr/.*#i'                             => array( 'https://www.flickr.com/services/oembed/',            true  ),
    42 			'http://revision3.com/*'                             => array( 'http://revision3.com/api/oembed/',                  false ),
    45 			'#https?://(.+\.)?smugmug\.com/.*#i'                  => array( 'http://api.smugmug.com/services/oembed/',            true  ),
    43 			'http://i*.photobucket.com/albums/*'                 => array( 'http://photobucket.com/oembed',                     false ),
    46 			'#https?://(www\.)?hulu\.com/watch/.*#i'              => array( 'http://www.hulu.com/api/oembed.{format}',            true  ),
    44 			'http://gi*.photobucket.com/groups/*'                => array( 'http://photobucket.com/oembed',                     false ),
    47 			'http://i*.photobucket.com/albums/*'                  => array( 'http://photobucket.com/oembed',                      false ),
    45 			'#https?://(www\.)?scribd\.com/.*#i'                 => array( 'http://www.scribd.com/services/oembed',             true  ),
    48 			'http://gi*.photobucket.com/groups/*'                 => array( 'http://photobucket.com/oembed',                      false ),
    46 			'http://wordpress.tv/*'                              => array( 'http://wordpress.tv/oembed/',                       false ),
    49 			'#https?://(www\.)?scribd\.com/doc/.*#i'              => array( 'http://www.scribd.com/services/oembed',              true  ),
    47 			'#https?://(.+\.)?polldaddy\.com/.*#i'               => array( 'http://polldaddy.com/oembed/',                      true  ),
    50 			'#https?://wordpress.tv/.*#i'                         => array( 'http://wordpress.tv/oembed/',                        true  ),
    48 			'#https?://(www\.)?funnyordie\.com/videos/.*#i'      => array( 'http://www.funnyordie.com/oembed',                  true  ),
    51 			'#https?://(.+\.)?polldaddy\.com/.*#i'                => array( 'https://polldaddy.com/oembed/',                      true  ),
    49 			'#https?://(www\.)?twitter\.com/.+?/status(es)?/.*#i'=> array( 'http://api.twitter.com/1/statuses/oembed.{format}', true  ),
    52 			'#https?://poll\.fm/.*#i'                             => array( 'https://polldaddy.com/oembed/',                      true  ),
    50  			'#https?://(www\.)?soundcloud\.com/.*#i'             => array( 'http://soundcloud.com/oembed',                      true  ),
    53 			'#https?://(www\.)?funnyordie\.com/videos/.*#i'       => array( 'http://www.funnyordie.com/oembed',                   true  ),
    51 			'#https?://(www\.)?slideshare\.net/*#'               => array( 'http://www.slideshare.net/api/oembed/2',            true  ),
    54 			'#https?://(www\.)?twitter\.com/.+?/status(es)?/.*#i' => array( 'https://api.twitter.com/1/statuses/oembed.{format}', true  ),
    52 			'#http://instagr(\.am|am\.com)/p/.*#i'               => array( 'http://api.instagram.com/oembed',                   true  ),
    55 			'#https?://vine.co/v/.*#i'                            => array( 'https://vine.co/oembed.{format}',                    true  ),
    53 			'#https?://(www\.)?rdio\.com/.*#i'                   => array( 'http://www.rdio.com/api/oembed/',                   true  ),
    56  			'#https?://(www\.)?soundcloud\.com/.*#i'              => array( 'http://soundcloud.com/oembed',                       true  ),
    54 			'#https?://rd\.io/x/.*#i'                            => array( 'http://www.rdio.com/api/oembed/',                   true  ),
    57 			'#https?://(.+?\.)?slideshare\.net/.*#i'              => array( 'https://www.slideshare.net/api/oembed/2',            true  ),
    55 			'#https?://(open|play)\.spotify\.com/.*#i'           => array( 'https://embed.spotify.com/oembed/',                 true  ),
    58 			'#https?://instagr(\.am|am\.com)/p/.*#i'              => array( 'https://api.instagram.com/oembed',                   true  ),
       
    59 			'#https?://(www\.)?rdio\.com/.*#i'                    => array( 'http://www.rdio.com/api/oembed/',                    true  ),
       
    60 			'#https?://rd\.io/x/.*#i'                             => array( 'http://www.rdio.com/api/oembed/',                    true  ),
       
    61 			'#https?://(open|play)\.spotify\.com/.*#i'            => array( 'https://embed.spotify.com/oembed/',                  true  ),
       
    62 			'#https?://(.+\.)?imgur\.com/.*#i'                    => array( 'http://api.imgur.com/oembed',                        true  ),
       
    63 			'#https?://(www\.)?meetu(\.ps|p\.com)/.*#i'           => array( 'http://api.meetup.com/oembed',                       true  ),
       
    64 			'#https?://(www\.)?issuu\.com/.+/docs/.+#i'           => array( 'http://issuu.com/oembed_wp',                         true  ),
       
    65 			'#https?://(www\.)?collegehumor\.com/video/.*#i'      => array( 'http://www.collegehumor.com/oembed.{format}',        true  ),
       
    66 			'#https?://(www\.)?mixcloud\.com/.*#i'                => array( 'http://www.mixcloud.com/oembed',                     true  ),
       
    67 			'#https?://(www\.|embed\.)?ted\.com/talks/.*#i'       => array( 'http://www.ted.com/talks/oembed.{format}',           true  ),
       
    68 			'#https?://(www\.)?(animoto|video214)\.com/play/.*#i' => array( 'http://animoto.com/oembeds/create',                  true  ),
       
    69 			'#https?://(.+)\.tumblr\.com/post/.*#i'               => array( 'https://www.tumblr.com/oembed/1.0',                  true  ),
       
    70 			'#https?://(www\.)?kickstarter\.com/projects/.*#i'    => array( 'https://www.kickstarter.com/services/oembed',        true  ),
       
    71 			'#https?://kck\.st/.*#i'                              => array( 'https://www.kickstarter.com/services/oembed',        true  ),
    56 		);
    72 		);
       
    73 
       
    74 		if ( ! empty( self::$early_providers['add'] ) ) {
       
    75 			foreach ( self::$early_providers['add'] as $format => $data ) {
       
    76 				$providers[ $format ] = $data;
       
    77 			}
       
    78 		}
       
    79 
       
    80 		if ( ! empty( self::$early_providers['remove'] ) ) {
       
    81 			foreach ( self::$early_providers['remove'] as $format ) {
       
    82 				unset( $providers[ $format ] );
       
    83 			}
       
    84 		}
       
    85 
       
    86 		self::$early_providers = array();
       
    87 
    57 		/**
    88 		/**
    58 		 * Filter the list of oEmbed providers.
    89 		 * Filter the list of oEmbed providers.
    59 		 *
    90 		 *
    60 		 * Discovery is disabled for users lacking the unfiltered_html capability.
    91 		 * Discovery is disabled for users lacking the unfiltered_html capability.
    61 		 * Only providers in this array will be used for those users.
    92 		 * Only providers in this array will be used for those users.
       
    93 		 *
       
    94 		 * Supported providers:
       
    95 		 *
       
    96 		 * | ------------ | -------------------- | ----- | --------- |
       
    97 		 * |   Provider   |        Flavor        |  SSL  |   Since   |
       
    98 		 * | ------------ | -------------------- | ----- | --------- |
       
    99 		 * | Blip         | blip.tv              |   !   | 2.9.0     |
       
   100 		 * | Dailymotion  | dailymotion.com      |  Yes  | 2.9.0     |
       
   101 		 * | Flickr       | flickr.com           |  Yes  | 2.9.0     |
       
   102 		 * | Hulu         | hulu.com             |  Yes  | 2.9.0     |
       
   103 		 * | Photobucket  | photobucket.com      |   !   | 2.9.0     |
       
   104 		 * | Scribd       | scribd.com           |  Yes  | 2.9.0     |
       
   105 		 * | Vimeo        | vimeo.com            |  Yes  | 2.9.0     |
       
   106 		 * | WordPress.tv | wordpress.tv         |  Yes  | 2.9.0     |
       
   107 		 * | YouTube      | youtube.com/watch    |  Yes  | 2.9.0     |
       
   108 		 * | ------------ | -------------------- | ----- | --------- |
       
   109 		 * | Funny or Die | funnyordie.com       |  Yes  | 3.0.0     |
       
   110 		 * | Polldaddy    | polldaddy.com        |  Yes  | 3.0.0     |
       
   111 		 * | SmugMug      | smugmug.com          |  Yes  | 3.0.0     |
       
   112 		 * | YouTube      | youtu.be             |  Yes  | 3.0.0     |
       
   113 		 * | ------------ | -------------------- | ----- | --------- |
       
   114 		 * | Twitter      | twitter.com          |  Yes  | 3.4.0     |
       
   115 		 * | ------------ | -------------------- | ----- | --------- |
       
   116 		 * | Instagram    | instagram.com        |  Yes  | 3.5.0     |
       
   117 		 * | Instagram    | instagr.am           |  Yes  | 3.5.0     |
       
   118 		 * | Slideshare   | slideshare.net       |  Yes  | 3.5.0     |
       
   119 		 * | SoundCloud   | soundcloud.com       |  Yes  | 3.5.0     |
       
   120 		 * | ------------ | -------------------- | ----- | --------- |
       
   121 		 * | Dailymotion  | dai.ly               |   !   | 3.6.0     |
       
   122 		 * | Flickr       | flic.kr              |  Yes  | 3.6.0     |
       
   123 		 * | Rdio         | rdio.com             |  Yes  | 3.6.0     |
       
   124 		 * | Rdio         | rd.io                |  Yes  | 3.6.0     |
       
   125 		 * | Spotify      | spotify.com          |  Yes  | 3.6.0     |
       
   126 		 * | ------------ | -------------------- | ----- | --------- |
       
   127 		 * | Imgur        | imgur.com            |  Yes  | 3.9.0     |
       
   128 		 * | Meetup.com   | meetup.com           |  Yes  | 3.9.0     |
       
   129 		 * | Meetup.com   | meetu.ps             |  Yes  | 3.9.0     |
       
   130 		 * | ------------ | -------------------- | ----- | --------- |
       
   131 		 * | Animoto      | animoto.com          |  Yes  | 4.0.0     |
       
   132 		 * | Animoto      | video214.com         |  Yes  | 4.0.0     |
       
   133 		 * | CollegeHumor | collegehumor.com     |  Yes  | 4.0.0     |
       
   134 		 * | Issuu        | issuu.com            |  Yes  | 4.0.0     |
       
   135 		 * | Mixcloud     | mixcloud.com         |  Yes  | 4.0.0     |
       
   136 		 * | Polldaddy    | poll.fm              |  Yes  | 4.0.0     |
       
   137 		 * | TED          | ted.com              |  Yes  | 4.0.0     |
       
   138 		 * | YouTube      | youtube.com/playlist |  Yes  | 4.0.0     |
       
   139 		 * | ------------ | -------------------- | ----- | --------- |
       
   140 		 * | Vine         | vine.co              |  Yes  | 4.1.0     |
       
   141 		 * | ------------ | -------------------- | ----- | --------- |
       
   142 		 * | Tumblr       | tumblr.com           |  Yes  | 4.2.0     |
       
   143 		 * | Kickstarter  | kickstarter.com      |  Yes  | 4.2.0     |
       
   144 		 * | Kickstarter  | kck.st               |  Yes  | 4.2.0     |
       
   145 		 * | ------------ | -------------------- | ----- | --------- |
       
   146 		 *
       
   147 		 * No longer supported providers:
       
   148 		 *
       
   149 		 * | ------------ | -------------------- | ----- | --------- | --------- |
       
   150 		 * |   Provider   |        Flavor        |  SSL  |   Since   |  Removed  |
       
   151 		 * | ------------ | -------------------- | ----- | --------- | --------- |
       
   152 		 * | Qik          | qik.com              |  Yes  | 2.9.0     | 3.9.0     |
       
   153 		 * | ------------ | -------------------- | ----- | --------- | --------- |
       
   154 		 * | Viddler      | viddler.com          |  Yes  | 2.9.0     | 4.0.0     |
       
   155 		 * | ------------ | -------------------- | ----- | --------- | --------- |
       
   156 		 * | Revision3    | revision3.com        |   !   | 2.9.0     | 4.2.0     |
       
   157 		 * | ------------ | -------------------- | ----- | --------- | --------- |
    62 		 *
   158 		 *
    63 		 * @see wp_oembed_add_provider()
   159 		 * @see wp_oembed_add_provider()
    64 		 *
   160 		 *
    65 		 * @since 2.9.0
   161 		 * @since 2.9.0
    66 		 *
   162 		 *
    71 		// Fix any embeds that contain new lines in the middle of the HTML which breaks wpautop().
   167 		// Fix any embeds that contain new lines in the middle of the HTML which breaks wpautop().
    72 		add_filter( 'oembed_dataparse', array($this, '_strip_newlines'), 10, 3 );
   168 		add_filter( 'oembed_dataparse', array($this, '_strip_newlines'), 10, 3 );
    73 	}
   169 	}
    74 
   170 
    75 	/**
   171 	/**
    76 	 * The do-it-all function that takes a URL and attempts to return the HTML.
   172 	 * Make private/protected methods readable for backwards compatibility.
       
   173 	 *
       
   174 	 * @since 4.0.0
       
   175 	 * @access public
       
   176 	 *
       
   177 	 * @param callable $name      Method to call.
       
   178 	 * @param array    $arguments Arguments to pass when calling.
       
   179 	 * @return mixed|bool Return value of the callback, false otherwise.
       
   180 	 */
       
   181 	public function __call( $name, $arguments ) {
       
   182 		if ( in_array( $name, $this->compat_methods ) ) {
       
   183 			return call_user_func_array( array( $this, $name ), $arguments );
       
   184 		}
       
   185 		return false;
       
   186 	}
       
   187 
       
   188 	/**
       
   189 	 * Takes a URL and returns the corresponding oEmbed provider's URL, if there is one.
       
   190 	 *
       
   191 	 * @since 4.0.0
       
   192 	 * @access public
    77 	 *
   193 	 *
    78 	 * @see WP_oEmbed::discover()
   194 	 * @see WP_oEmbed::discover()
    79 	 * @see WP_oEmbed::fetch()
   195 	 *
    80 	 * @see WP_oEmbed::data2html()
   196 	 * @param string        $url  The URL to the content.
    81 	 *
   197 	 * @param string|array  $args Optional provider arguments.
    82 	 * @param string $url The URL to the content that should be attempted to be embedded.
   198 	 * @return bool|string False on failure, otherwise the oEmbed provider URL.
    83 	 * @param array $args Optional arguments. Usually passed from a shortcode.
   199 	 */
    84 	 * @return bool|string False on failure, otherwise the UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
   200 	public function get_provider( $url, $args = '' ) {
    85 	 */
   201 
    86 	function get_html( $url, $args = '' ) {
       
    87 		$provider = false;
   202 		$provider = false;
    88 
   203 
    89 		if ( !isset($args['discover']) )
   204 		if ( !isset($args['discover']) )
    90 			$args['discover'] = true;
   205 			$args['discover'] = true;
    91 
   206 
   105 		}
   220 		}
   106 
   221 
   107 		if ( !$provider && $args['discover'] )
   222 		if ( !$provider && $args['discover'] )
   108 			$provider = $this->discover( $url );
   223 			$provider = $this->discover( $url );
   109 
   224 
       
   225 		return $provider;
       
   226 	}
       
   227 
       
   228 	/**
       
   229 	 * Add an oEmbed provider just-in-time when wp_oembed_add_provider() is called
       
   230 	 * before the 'plugins_loaded' hook.
       
   231 	 *
       
   232 	 * The just-in-time addition is for the benefit of the 'oembed_providers' filter.
       
   233 	 *
       
   234 	 * @since 4.0.0
       
   235 	 * @access public
       
   236 	 * @static
       
   237 	 *
       
   238 	 * @see wp_oembed_add_provider()
       
   239 	 *
       
   240 	 * @param string $format   Format of URL that this provider can handle. You can use
       
   241 	 *                         asterisks as wildcards.
       
   242 	 * @param string $provider The URL to the oEmbed provider..
       
   243 	 * @param bool   $regex    Optional. Whether the $format parameter is in a regex format.
       
   244 	 *                         Default false.
       
   245 	 */
       
   246 	public static function _add_provider_early( $format, $provider, $regex = false ) {
       
   247 		if ( empty( self::$early_providers['add'] ) ) {
       
   248 			self::$early_providers['add'] = array();
       
   249 		}
       
   250 
       
   251 		self::$early_providers['add'][ $format ] = array( $provider, $regex );
       
   252 	}
       
   253 
       
   254 	/**
       
   255 	 * Remove an oEmbed provider just-in-time when wp_oembed_remove_provider() is called
       
   256 	 * before the 'plugins_loaded' hook.
       
   257 	 *
       
   258 	 * The just-in-time removal is for the benefit of the 'oembed_providers' filter.
       
   259 	 *
       
   260 	 * @since 4.0.0
       
   261 	 * @access public
       
   262 	 * @static
       
   263 	 *
       
   264 	 * @see wp_oembed_remove_provider()
       
   265 	 *
       
   266 	 * @param string $format The format of URL that this provider can handle. You can use
       
   267 	 *                       asterisks as wildcards.
       
   268 	 */
       
   269 	public static function _remove_provider_early( $format ) {
       
   270 		if ( empty( self::$early_providers['remove'] ) ) {
       
   271 			self::$early_providers['remove'] = array();
       
   272 		}
       
   273 
       
   274 		self::$early_providers['remove'][] = $format;
       
   275 	}
       
   276 
       
   277 	/**
       
   278 	 * The do-it-all function that takes a URL and attempts to return the HTML.
       
   279 	 *
       
   280 	 * @see WP_oEmbed::fetch()
       
   281 	 * @see WP_oEmbed::data2html()
       
   282 	 *
       
   283 	 * @param string $url The URL to the content that should be attempted to be embedded.
       
   284 	 * @param array $args Optional arguments. Usually passed from a shortcode.
       
   285 	 * @return false|string False on failure, otherwise the UNSANITIZED (and potentially unsafe) HTML that should be used to embed.
       
   286 	 */
       
   287 	public function get_html( $url, $args = '' ) {
       
   288 		$provider = $this->get_provider( $url, $args );
       
   289 
   110 		if ( !$provider || false === $data = $this->fetch( $provider, $url, $args ) )
   290 		if ( !$provider || false === $data = $this->fetch( $provider, $url, $args ) )
   111 			return false;
   291 			return false;
   112 
   292 
   113 		/**
   293 		/**
   114 		 * Filter the HTML returned by the oEmbed provider.
   294 		 * Filter the HTML returned by the oEmbed provider.
   121 		 */
   301 		 */
   122 		return apply_filters( 'oembed_result', $this->data2html( $data, $url ), $url, $args );
   302 		return apply_filters( 'oembed_result', $this->data2html( $data, $url ), $url, $args );
   123 	}
   303 	}
   124 
   304 
   125 	/**
   305 	/**
   126 	 * Attempts to find oEmbed provider discovery <link> tags at the given URL.
   306 	 * Attempts to discover link tags at the given URL for an oEmbed provider.
   127 	 *
   307 	 *
   128 	 * @param string $url The URL that should be inspected for discovery <link> tags.
   308 	 * @param string $url The URL that should be inspected for discovery `<link>` tags.
   129 	 * @return bool|string False on failure, otherwise the oEmbed provider URL.
   309 	 * @return bool|string False on failure, otherwise the oEmbed provider URL.
   130 	 */
   310 	 */
   131 	function discover( $url ) {
   311 	public function discover( $url ) {
   132 		$providers = array();
   312 		$providers = array();
   133 
   313 
       
   314 		/**
       
   315 		 * Filter oEmbed remote get arguments.
       
   316 		 *
       
   317 		 * @since 4.0.0
       
   318 		 *
       
   319 		 * @see WP_Http::request()
       
   320 		 *
       
   321 		 * @param array  $args oEmbed remote get arguments.
       
   322 		 * @param string $url  URL to be inspected.
       
   323 		 */
       
   324 		$args = apply_filters( 'oembed_remote_get_args', array(), $url );
       
   325 
   134 		// Fetch URL content
   326 		// Fetch URL content
   135 		if ( $html = wp_remote_retrieve_body( wp_safe_remote_get( $url ) ) ) {
   327 		$request = wp_safe_remote_get( $url, $args );
       
   328 		if ( $html = wp_remote_retrieve_body( $request ) ) {
   136 
   329 
   137 			/**
   330 			/**
   138 			 * Filter the link types that contain oEmbed provider URLs.
   331 			 * Filter the link types that contain oEmbed provider URLs.
   139 			 *
   332 			 *
   140 			 * @since 2.9.0
   333 			 * @since 2.9.0
   159 					$tagfound = true;
   352 					$tagfound = true;
   160 					break;
   353 					break;
   161 				}
   354 				}
   162 			}
   355 			}
   163 
   356 
   164 			if ( $tagfound && preg_match_all( '/<link([^<>]+)>/i', $html, $links ) ) {
   357 			if ( $tagfound && preg_match_all( '#<link([^<>]+)/?>#iU', $html, $links ) ) {
   165 				foreach ( $links[1] as $link ) {
   358 				foreach ( $links[1] as $link ) {
   166 					$atts = shortcode_parse_atts( $link );
   359 					$atts = shortcode_parse_atts( $link );
   167 
   360 
   168 					if ( !empty($atts['type']) && !empty($linktypes[$atts['type']]) && !empty($atts['href']) ) {
   361 					if ( !empty($atts['type']) && !empty($linktypes[$atts['type']]) && !empty($atts['href']) ) {
   169 						$providers[$linktypes[$atts['type']]] = $atts['href'];
   362 						$providers[$linktypes[$atts['type']]] = htmlspecialchars_decode( $atts['href'] );
   170 
   363 
   171 						// Stop here if it's JSON (that's all we need)
   364 						// Stop here if it's JSON (that's all we need)
   172 						if ( 'json' == $linktypes[$atts['type']] )
   365 						if ( 'json' == $linktypes[$atts['type']] )
   173 							break;
   366 							break;
   174 					}
   367 					}
   191 	 * @param string $provider The URL to the oEmbed provider.
   384 	 * @param string $provider The URL to the oEmbed provider.
   192 	 * @param string $url The URL to the content that is desired to be embedded.
   385 	 * @param string $url The URL to the content that is desired to be embedded.
   193 	 * @param array $args Optional arguments. Usually passed from a shortcode.
   386 	 * @param array $args Optional arguments. Usually passed from a shortcode.
   194 	 * @return bool|object False on failure, otherwise the result in the form of an object.
   387 	 * @return bool|object False on failure, otherwise the result in the form of an object.
   195 	 */
   388 	 */
   196 	function fetch( $provider, $url, $args = '' ) {
   389 	public function fetch( $provider, $url, $args = '' ) {
   197 		$args = wp_parse_args( $args, wp_embed_defaults() );
   390 		$args = wp_parse_args( $args, wp_embed_defaults( $url ) );
   198 
   391 
   199 		$provider = add_query_arg( 'maxwidth', (int) $args['width'], $provider );
   392 		$provider = add_query_arg( 'maxwidth', (int) $args['width'], $provider );
   200 		$provider = add_query_arg( 'maxheight', (int) $args['height'], $provider );
   393 		$provider = add_query_arg( 'maxheight', (int) $args['height'], $provider );
   201 		$provider = add_query_arg( 'url', urlencode($url), $provider );
   394 		$provider = add_query_arg( 'url', urlencode($url), $provider );
   202 
   395 
   227 	 * @access private
   420 	 * @access private
   228 	 * @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.)
   421 	 * @param string $provider_url_with_args URL to the provider with full arguments list (url, maxheight, etc.)
   229 	 * @param string $format Format to use
   422 	 * @param string $format Format to use
   230 	 * @return bool|object False on failure, otherwise the result in the form of an object.
   423 	 * @return bool|object False on failure, otherwise the result in the form of an object.
   231 	 */
   424 	 */
   232 	function _fetch_with_format( $provider_url_with_args, $format ) {
   425 	private function _fetch_with_format( $provider_url_with_args, $format ) {
   233 		$provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args );
   426 		$provider_url_with_args = add_query_arg( 'format', $format, $provider_url_with_args );
   234 		$response = wp_safe_remote_get( $provider_url_with_args );
   427 
       
   428 		/** This filter is documented in wp-includes/class-oembed.php */
       
   429 		$args = apply_filters( 'oembed_remote_get_args', array(), $provider_url_with_args );
       
   430 
       
   431 		$response = wp_safe_remote_get( $provider_url_with_args, $args );
   235 		if ( 501 == wp_remote_retrieve_response_code( $response ) )
   432 		if ( 501 == wp_remote_retrieve_response_code( $response ) )
   236 			return new WP_Error( 'not-implemented' );
   433 			return new WP_Error( 'not-implemented' );
   237 		if ( ! $body = wp_remote_retrieve_body( $response ) )
   434 		if ( ! $body = wp_remote_retrieve_body( $response ) )
   238 			return false;
   435 			return false;
   239 		$parse_method = "_parse_$format";
   436 		$parse_method = "_parse_$format";
   244 	 * Parses a json response body.
   441 	 * Parses a json response body.
   245 	 *
   442 	 *
   246 	 * @since 3.0.0
   443 	 * @since 3.0.0
   247 	 * @access private
   444 	 * @access private
   248 	 */
   445 	 */
   249 	function _parse_json( $response_body ) {
   446 	private function _parse_json( $response_body ) {
   250 		return ( ( $data = json_decode( trim( $response_body ) ) ) && is_object( $data ) ) ? $data : false;
   447 		return ( ( $data = json_decode( trim( $response_body ) ) ) && is_object( $data ) ) ? $data : false;
   251 	}
   448 	}
   252 
   449 
   253 	/**
   450 	/**
   254 	 * Parses an XML response body.
   451 	 * Parses an XML response body.
   255 	 *
   452 	 *
   256 	 * @since 3.0.0
   453 	 * @since 3.0.0
   257 	 * @access private
   454 	 * @access private
   258 	 */
   455 	 */
   259 	function _parse_xml( $response_body ) {
   456 	private function _parse_xml( $response_body ) {
   260 		if ( ! function_exists( 'libxml_disable_entity_loader' ) )
   457 		if ( ! function_exists( 'libxml_disable_entity_loader' ) )
   261 			return false;
   458 			return false;
   262 
   459 
   263 		$loader = libxml_disable_entity_loader( true );
   460 		$loader = libxml_disable_entity_loader( true );
   264 		$errors = libxml_use_internal_errors( true );
   461 		$errors = libxml_use_internal_errors( true );
   309 	/**
   506 	/**
   310 	 * Converts a data object from {@link WP_oEmbed::fetch()} and returns the HTML.
   507 	 * Converts a data object from {@link WP_oEmbed::fetch()} and returns the HTML.
   311 	 *
   508 	 *
   312 	 * @param object $data A data object result from an oEmbed provider.
   509 	 * @param object $data A data object result from an oEmbed provider.
   313 	 * @param string $url The URL to the content that is desired to be embedded.
   510 	 * @param string $url The URL to the content that is desired to be embedded.
   314 	 * @return bool|string False on error, otherwise the HTML needed to embed.
   511 	 * @return false|string False on error, otherwise the HTML needed to embed.
   315 	 */
   512 	 */
   316 	function data2html( $data, $url ) {
   513 	public function data2html( $data, $url ) {
   317 		if ( ! is_object( $data ) || empty( $data->type ) )
   514 		if ( ! is_object( $data ) || empty( $data->type ) )
   318 			return false;
   515 			return false;
   319 
   516 
   320 		$return = false;
   517 		$return = false;
   321 
   518 
   360 	}
   557 	}
   361 
   558 
   362 	/**
   559 	/**
   363 	 * Strip any new lines from the HTML.
   560 	 * Strip any new lines from the HTML.
   364 	 *
   561 	 *
   365 	 * @access private
   562 	 * @access public
   366 	 * @param string $html Existing HTML.
   563 	 * @param string $html Existing HTML.
   367 	 * @param object $data Data object from WP_oEmbed::data2html()
   564 	 * @param object $data Data object from WP_oEmbed::data2html()
   368 	 * @param string $url The original URL passed to oEmbed.
   565 	 * @param string $url The original URL passed to oEmbed.
   369 	 * @return string Possibly modified $html
   566 	 * @return string Possibly modified $html
   370 	 */
   567 	 */
   371 	function _strip_newlines( $html, $data, $url ) {
   568 	public function _strip_newlines( $html, $data, $url ) {
   372 		if ( false !== strpos( $html, "\n" ) )
   569 		if ( false === strpos( $html, "\n" ) ) {
   373 			$html = str_replace( array( "\r\n", "\n" ), '', $html );
   570 			return $html;
   374 
   571 		}
   375 		return $html;
   572 
       
   573 		$count = 1;
       
   574 		$found = array();
       
   575 		$token = '__PRE__';
       
   576 		$search = array( "\t", "\n", "\r", ' ' );
       
   577 		$replace = array( '__TAB__', '__NL__', '__CR__', '__SPACE__' );
       
   578 		$tokenized = str_replace( $search, $replace, $html );
       
   579 
       
   580 		preg_match_all( '#(<pre[^>]*>.+?</pre>)#i', $tokenized, $matches, PREG_SET_ORDER );
       
   581 		foreach ( $matches as $i => $match ) {
       
   582 			$tag_html = str_replace( $replace, $search, $match[0] );
       
   583 			$tag_token = $token . $i;
       
   584 
       
   585 			$found[ $tag_token ] = $tag_html;
       
   586 			$html = str_replace( $tag_html, $tag_token, $html, $count );
       
   587 		}
       
   588 
       
   589 		$replaced = str_replace( $replace, $search, $html );
       
   590 		$stripped = str_replace( array( "\r\n", "\n" ), '', $replaced );
       
   591 		$pre = array_values( $found );
       
   592 		$tokens = array_keys( $found );
       
   593 
       
   594 		return str_replace( $tokens, $pre, $stripped );
   376 	}
   595 	}
   377 }
   596 }
   378 
   597 
   379 /**
   598 /**
   380  * Returns the initialized {@link WP_oEmbed} object
   599  * Returns the initialized {@link WP_oEmbed} object
   381  *
   600  *
   382  * @since 2.9.0
   601  * @since 2.9.0
   383  * @access private
   602  * @access private
   384  *
   603  *
   385  * @see WP_oEmbed
   604  * @see WP_oEmbed
   386  * @uses WP_oEmbed
       
   387  *
   605  *
   388  * @return WP_oEmbed object.
   606  * @return WP_oEmbed object.
   389  */
   607  */
   390 function _wp_oembed_get_object() {
   608 function _wp_oembed_get_object() {
   391 	static $wp_oembed;
   609 	static $wp_oembed;