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youtube.php
673 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Youtube shortcode |
| 4 | * |
| 5 | * Contains shortcode + some improvements over the Core Embeds syntax (see http://codex.wordpress.org/Embeds ) |
| 6 | * |
| 7 | * Examples: |
| 8 | * [youtube https://www.youtube.com/watch?v=WVbQ-oro7FQ] |
| 9 | * [youtube=http://www.youtube.com/watch?v=wq0rXGLs0YM&fs=1&hl=bg_BG&autohide=1&rel=0] |
| 10 | * http://www.youtube.com/watch?v=H2Ncxw1xfck&w=320&h=240&fmt=1&rel=0&showsearch=1&hd=0 |
| 11 | * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US |
| 12 | * https://www.youtube.com/playlist?list=PLP7HaNDU4Cifov7C2fQM8Ij6Ew_uPHEXW |
| 13 | * |
| 14 | * @package automattic/jetpack |
| 15 | */ |
| 16 | |
| 17 | if ( ! defined( 'ABSPATH' ) ) { |
| 18 | exit( 0 ); |
| 19 | } |
| 20 | |
| 21 | /** |
| 22 | * Replaces YouTube embeds with YouTube shortcodes. |
| 23 | * |
| 24 | * Covers the following formats: |
| 25 | * 2008-07-15: |
| 26 | * <object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/bZBHZT3a-FA&hl=en&fs=1"></param><param name="allowFullScreen" value="true"></param><embed src="http://www.youtube.com/v/bZBHZT3a-FA&hl=en&fs=1" type="application/x-shockwave-flash" allowfullscreen="true" width="425" height="344"></embed></object> |
| 27 | * around 2008-06-06 youtube changed their old embed code to this: |
| 28 | * <object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/M1D30gS7Z8U&hl=en"></param><embed src="http://www.youtube.com/v/M1D30gS7Z8U&hl=en" type="application/x-shockwave-flash" width="425" height="344"></embed></object> |
| 29 | * old style was: |
| 30 | * <object width="425" height="344"><param name="movie" value="http://www.youtube.com/v/dGY28Qbj76A&rel=0"></param><param name="wmode" value="transparent"></param><embed src="http://www.youtube.com/v/dGY28Qbj76A&rel=0" type="application/x-shockwave-flash" wmode="transparent" width="425" height="344"></embed></object> |
| 31 | * 12-2010: |
| 32 | * <object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/3H8bnKdf654?fs=1&hl=en_GB"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/3H8bnKdf654?fs=1&hl=en_GB" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object> |
| 33 | * 01-2011: |
| 34 | * <iframe title="YouTube video player" class="youtube-player" width="640" height="390" src="http://www.youtube.com/embed/Qq9El3ki0_g" frameborder="0" allowFullScreen></iframe> |
| 35 | * <iframe class="youtube-player" width="640" height="385" src="http://www.youtube.com/embed/VIDEO_ID" frameborder="0"></iframe> |
| 36 | * |
| 37 | * @param string $content HTML content. |
| 38 | * @return string The content with YouTube embeds replaced with YouTube shortcodes. |
| 39 | */ |
| 40 | function jetpack_youtube_embed_to_short_code( $content ) { |
| 41 | if ( ! is_string( $content ) || ! str_contains( $content, 'youtube.com' ) ) { |
| 42 | return $content; |
| 43 | } |
| 44 | |
| 45 | // older codes. |
| 46 | $regexp = '!<object(.*?)>.*?<param\s+name=[\'"]movie[\'"]\s+value=[\'"](https?:)?//www\.youtube\.com/v/([^\'"]+)[\'"].*?>.*?</object>!i'; |
| 47 | $regexp_ent = htmlspecialchars( $regexp, ENT_NOQUOTES ); |
| 48 | $old_regexp = '!<embed(?:\s+\w+="[^"]*")*\s+src="https?(?:\:|�*58;)//www\.youtube\.com/v/([^"]+)"(?:\s+\w+="[^"]*")*\s*(?:/>|>\s*</embed>)!'; |
| 49 | $old_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $old_regexp, ENT_NOQUOTES ) ); |
| 50 | |
| 51 | // new code. |
| 52 | $ifr_regexp = '!<iframe((?:\s+\w+="[^"]*")*?)\s+src="(https?:)?//(?:www\.)*youtube.com/embed/([^"]+)".*?</iframe>!i'; |
| 53 | $ifr_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $ifr_regexp, ENT_NOQUOTES ) ); |
| 54 | |
| 55 | foreach ( compact( 'regexp', 'regexp_ent', 'old_regexp', 'old_regexp_ent', 'ifr_regexp', 'ifr_regexp_ent' ) as $reg => $regexp ) { |
| 56 | if ( ! preg_match_all( $regexp, $content, $matches, PREG_SET_ORDER ) ) { |
| 57 | continue; |
| 58 | } |
| 59 | |
| 60 | foreach ( $matches as $match ) { |
| 61 | /* |
| 62 | * Hack, but '?' should only ever appear once, and |
| 63 | * it should be for the 1st field-value pair in query string, |
| 64 | * if it is present |
| 65 | * YouTube changed their embed code. |
| 66 | * Example of how it is now: |
| 67 | * <object width="640" height="385"><param name="movie" value="http://www.youtube.com/v/aP9AaD4tgBY?fs=1&hl=en_US"></param><param name="allowFullScreen" value="true"></param><param name="allowscriptaccess" value="always"></param><embed src="http://www.youtube.com/v/aP9AaD4tgBY?fs=1&hl=en_US" type="application/x-shockwave-flash" allowscriptaccess="always" allowfullscreen="true" width="640" height="385"></embed></object> |
| 68 | * As shown at the start of function, previous YouTube didn't '?' |
| 69 | * the 1st field-value pair. |
| 70 | */ |
| 71 | if ( in_array( $reg, array( 'ifr_regexp', 'ifr_regexp_ent', 'regexp', 'regexp_ent' ), true ) ) { |
| 72 | $params = $match[1]; |
| 73 | |
| 74 | if ( in_array( $reg, array( 'ifr_regexp_ent', 'regexp_ent' ), true ) ) { |
| 75 | $params = html_entity_decode( $params, ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401 ); |
| 76 | } |
| 77 | |
| 78 | $params = wp_kses_hair( $params, array( 'http' ) ); |
| 79 | |
| 80 | $width = isset( $params['width'] ) ? (int) $params['width']['value'] : 0; |
| 81 | $height = isset( $params['height'] ) ? (int) $params['height']['value'] : 0; |
| 82 | $wh = ''; |
| 83 | |
| 84 | if ( $width && $height ) { |
| 85 | $wh = "&w=$width&h=$height"; |
| 86 | } |
| 87 | |
| 88 | $url = esc_url_raw( "https://www.youtube.com/watch?v={$match[3]}{$wh}" ); |
| 89 | } else { |
| 90 | $match[1] = str_replace( '?', '&', $match[1] ); |
| 91 | |
| 92 | $url = esc_url_raw( 'https://www.youtube.com/watch?v=' . html_entity_decode( $match[1], ENT_QUOTES | ENT_SUBSTITUTE | ENT_HTML401 ) ); |
| 93 | } |
| 94 | |
| 95 | $content = str_replace( $match[0], "[youtube $url]", $content ); |
| 96 | |
| 97 | /** |
| 98 | * Fires before the YouTube embed is transformed into a shortcode. |
| 99 | * |
| 100 | * @module shortcodes |
| 101 | * |
| 102 | * @since 1.2.0 |
| 103 | * |
| 104 | * @param string youtube Shortcode name. |
| 105 | * @param string $url YouTube video URL. |
| 106 | */ |
| 107 | do_action( 'jetpack_embed_to_shortcode', 'youtube', $url ); |
| 108 | } |
| 109 | } |
| 110 | |
| 111 | return $content; |
| 112 | } |
| 113 | |
| 114 | if ( jetpack_shortcodes_should_hook_pre_kses() ) { |
| 115 | add_filter( 'pre_kses', 'jetpack_youtube_embed_to_short_code' ); |
| 116 | } |
| 117 | |
| 118 | /** |
| 119 | * Replaces plain-text links to YouTube videos with YouTube embeds. |
| 120 | * |
| 121 | * @param string $content HTML content. |
| 122 | * |
| 123 | * @return string The content with embeds instead of URLs |
| 124 | */ |
| 125 | function jetpack_youtube_link( $content ) { |
| 126 | return jetpack_preg_replace_callback_outside_tags( '!(?:\n|\A)https?://(?:www\.)?(?:youtube.com/(?:v/|playlist|watch[/\#?])|youtu\.be/)[^\s]+?(?:\n|\Z)!i', 'jetpack_youtube_link_callback', $content, 'youtube.com/' ); |
| 127 | } |
| 128 | |
| 129 | /** |
| 130 | * Callback function for the regex that replaces YouTube URLs with |
| 131 | * YouTube embeds. |
| 132 | * |
| 133 | * @param array $matches An array containing a YouTube URL. |
| 134 | */ |
| 135 | function jetpack_youtube_link_callback( $matches ) { |
| 136 | return "\n" . jetpack_youtube_id( $matches[0] ) . "\n"; |
| 137 | } |
| 138 | |
| 139 | /** |
| 140 | * Normalizes a YouTube URL to include a v= parameter and a query string free of encoded ampersands. |
| 141 | * |
| 142 | * @param string|array $url Youtube URL. |
| 143 | * @return string|false The normalized URL or false if input is invalid. |
| 144 | */ |
| 145 | if ( ! function_exists( 'jetpack_youtube_sanitize_url' ) ) : |
| 146 | /** |
| 147 | * Clean up Youtube URL to match a single format. |
| 148 | * |
| 149 | * @param string|array $url Youtube URL. |
| 150 | */ |
| 151 | function jetpack_youtube_sanitize_url( $url ) { |
| 152 | if ( is_array( $url ) && isset( $url['url'] ) ) { |
| 153 | $url = $url['url']; |
| 154 | } |
| 155 | if ( ! is_string( $url ) ) { |
| 156 | return false; |
| 157 | } |
| 158 | |
| 159 | $url = trim( $url, ' "' ); |
| 160 | $url = trim( $url ); |
| 161 | $url = str_replace( array( 'youtu.be/', '/v/', '#!v=', '&', '&', 'playlist' ), array( 'youtu.be/?v=', '/?v=', '?v=', '&', '&', 'videoseries' ), $url ); |
| 162 | |
| 163 | // Replace any extra question marks with ampersands - the result of a URL like "https://www.youtube.com/v/dQw4w9WgXcQ?fs=1&hl=en_US" being passed in. |
| 164 | $query_string_start = strpos( $url, '?' ); |
| 165 | |
| 166 | if ( false !== $query_string_start ) { |
| 167 | $url = substr( $url, 0, $query_string_start + 1 ) . str_replace( '?', '&', substr( $url, $query_string_start + 1 ) ); |
| 168 | } |
| 169 | |
| 170 | return $url; |
| 171 | } |
| 172 | endif; |
| 173 | |
| 174 | /** |
| 175 | * Converts a YouTube URL into an embedded YouTube video. |
| 176 | * |
| 177 | * URL can be: |
| 178 | * http://www.youtube.com/embed/videoseries?list=PL94269DA08231042B&hl=en_US |
| 179 | * http://www.youtube.com/watch#!v=H2Ncxw1xfck |
| 180 | * http://www.youtube.com/watch?v=H2Ncxw1xfck |
| 181 | * http://www.youtube.com/watch?v=H2Ncxw1xfck&w=320&h=240&fmt=1&rel=0&showsearch=1&hd=0 |
| 182 | * http://www.youtube.com/v/jF-kELmmvgA |
| 183 | * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US |
| 184 | * http://youtu.be/Rrohlqeir5E |
| 185 | * https://www.youtube.com/watch?v=GJNxoe-iSb4&list=PLAVZ4NFtZX0fE54mDSqNKym-o_rz-8xmk |
| 186 | * |
| 187 | * @param string $url Youtube URL. |
| 188 | */ |
| 189 | function jetpack_youtube_id( $url ) { |
| 190 | $id = jetpack_get_youtube_id( $url ); |
| 191 | |
| 192 | if ( ! $id ) { |
| 193 | return sprintf( '<!--%s-->', esc_html__( 'YouTube Error: bad URL entered', 'jetpack' ) ); |
| 194 | } |
| 195 | |
| 196 | $url = jetpack_youtube_sanitize_url( $url ); |
| 197 | $url = wp_parse_url( $url ); |
| 198 | |
| 199 | $thumbnail = "https://i.ytimg.com/vi/$id/hqdefault.jpg"; |
| 200 | $video_url = add_query_arg( 'v', $id, 'https://www.youtube.com/watch' ); |
| 201 | |
| 202 | $args = jetpack_shortcode_youtube_args( $url ); |
| 203 | if ( empty( $args ) ) { |
| 204 | return sprintf( '<!--%s-->', esc_html__( 'YouTube Error: empty URL args', 'jetpack' ) ); |
| 205 | } |
| 206 | |
| 207 | // Account for URL having both v and list, where jetpack_get_youtube_id() only accounts for one or the other. |
| 208 | if ( isset( $args['list'] ) && $args['list'] === $id ) { |
| 209 | $id = null; |
| 210 | } |
| 211 | if ( isset( $args['v'] ) ) { |
| 212 | $id = $args['v']; |
| 213 | } |
| 214 | if ( ! $id && empty( $args['list'] ) ) { |
| 215 | return sprintf( '<!--%s-->', esc_html__( 'YouTube Error: missing id and/or list', 'jetpack' ) ); |
| 216 | } |
| 217 | |
| 218 | list( $w, $h ) = jetpack_shortcode_youtube_dimensions( $args ); |
| 219 | |
| 220 | $params = array( |
| 221 | 'rel' => ( isset( $args['rel'] ) && '0' === $args['rel'] ) ? 0 : 1, |
| 222 | 'showsearch' => ( isset( $args['showsearch'] ) && '1' === $args['showsearch'] ) ? 1 : 0, // Now deprecated. See https://developers.google.com/youtube/player_parameters#march-29,-2012. |
| 223 | 'showinfo' => ( isset( $args['showinfo'] ) && '0' === $args['showinfo'] ) ? 0 : 1, // Now obsolete. See https://developers.google.com/youtube/player_parameters#showinfo. |
| 224 | 'iv_load_policy' => ( isset( $args['iv_load_policy'] ) && '3' === $args['iv_load_policy'] ) ? 3 : 1, |
| 225 | 'fs' => 1, |
| 226 | 'hl' => str_replace( '_', '-', get_locale() ), |
| 227 | ); |
| 228 | if ( isset( $args['fmt'] ) && (int) $args['fmt'] ) { |
| 229 | $params['fmt'] = (int) $args['fmt']; // Apparently an obsolete parameter. Not referenced on https://developers.google.com/youtube/player_parameters. |
| 230 | } |
| 231 | |
| 232 | // The autohide parameter has been deprecated since 2015. See https://developers.google.com/youtube/player_parameters#august-19,-2015. |
| 233 | if ( ! isset( $args['autohide'] ) || ( $args['autohide'] < 0 || 2 < $args['autohide'] ) ) { |
| 234 | $params['autohide'] = 2; |
| 235 | } else { |
| 236 | $params['autohide'] = (int) $args['autohide']; |
| 237 | } |
| 238 | |
| 239 | $start = 0; |
| 240 | if ( isset( $args['start'] ) ) { |
| 241 | $start = (int) $args['start']; |
| 242 | } elseif ( isset( $args['t'] ) ) { |
| 243 | if ( is_numeric( $args['t'] ) ) { |
| 244 | $start = (int) $args['t']; |
| 245 | } elseif ( is_string( $args['t'] ) ) { |
| 246 | $time_pieces = preg_split( '/(?<=\D)(?=\d+)/', $args['t'] ); |
| 247 | |
| 248 | foreach ( $time_pieces as $time_piece ) { |
| 249 | $int = (int) $time_piece; |
| 250 | switch ( substr( $time_piece, - 1 ) ) { |
| 251 | case 'h': |
| 252 | $start += $int * 3600; |
| 253 | break; |
| 254 | case 'm': |
| 255 | $start += $int * 60; |
| 256 | break; |
| 257 | case 's': |
| 258 | $start += $int; |
| 259 | break; |
| 260 | } |
| 261 | } |
| 262 | } |
| 263 | } |
| 264 | if ( $start ) { |
| 265 | $params['start'] = (int) $start; |
| 266 | } |
| 267 | |
| 268 | if ( isset( $args['end'] ) && (int) $args['end'] ) { |
| 269 | $params['end'] = (int) $args['end']; |
| 270 | } |
| 271 | if ( isset( $args['hd'] ) && (int) $args['hd'] ) { |
| 272 | $params['hd'] = (int) $args['hd']; // Now obsolete per https://developers.google.com/youtube/player_parameters#march-29,-2012. |
| 273 | } |
| 274 | if ( isset( $args['vq'] ) && in_array( $args['vq'], array( 'hd720', 'hd1080' ), true ) ) { |
| 275 | $params['vq'] = $args['vq']; // Note, this appears to be obsolete. Not referenced on https://developers.google.com/youtube/player_parameters. |
| 276 | } |
| 277 | if ( isset( $args['cc_load_policy'] ) ) { |
| 278 | $params['cc_load_policy'] = 1; |
| 279 | } |
| 280 | if ( isset( $args['cc_lang_pref'] ) ) { |
| 281 | $params['cc_lang_pref'] = preg_replace( '/[^_a-z0-9-]/i', '', $args['cc_lang_pref'] ); |
| 282 | } |
| 283 | |
| 284 | // The wmode parameter appears to be obsolete. Not referenced on https://developers.google.com/youtube/player_parameters. |
| 285 | if ( isset( $args['wmode'] ) && in_array( strtolower( $args['wmode'] ), array( 'opaque', 'window', 'transparent' ), true ) ) { |
| 286 | $params['wmode'] = $args['wmode']; |
| 287 | } else { |
| 288 | $params['wmode'] = 'transparent'; |
| 289 | } |
| 290 | |
| 291 | // The theme parameter is obsolete per https://developers.google.com/youtube/player_parameters#august-19,-2015. |
| 292 | if ( isset( $args['theme'] ) && in_array( strtolower( $args['theme'] ), array( 'dark', 'light' ), true ) ) { |
| 293 | $params['theme'] = $args['theme']; |
| 294 | } |
| 295 | |
| 296 | if ( isset( $args['list'] ) ) { |
| 297 | $params['listType'] = 'playlist'; |
| 298 | $params['list'] = preg_replace( '|[^_a-z0-9-]|i', '', $args['list'] ); |
| 299 | } |
| 300 | |
| 301 | /** |
| 302 | * Allow YouTube videos to start playing automatically. |
| 303 | * |
| 304 | * @module shortcodes |
| 305 | * |
| 306 | * @since 2.2.2 |
| 307 | * |
| 308 | * @param bool false Enable autoplay for YouTube videos. |
| 309 | */ |
| 310 | if ( apply_filters( 'jetpack_youtube_allow_autoplay', false ) && isset( $args['autoplay'] ) ) { |
| 311 | $params['autoplay'] = (int) $args['autoplay']; |
| 312 | } |
| 313 | |
| 314 | $is_amp = class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request(); |
| 315 | |
| 316 | if ( $is_amp && $id ) { |
| 317 | // Note that <amp-youtube> currently is not well suited for playlists that don't have an individual video selected, hence the $id check above. |
| 318 | $placeholder = sprintf( |
| 319 | '<a href="%1$s" placeholder><amp-img src="%2$s" alt="%3$s" layout="fill" object-fit="cover"><noscript><img src="%2$s" loading="lazy" decoding="async" alt="%3$s"></noscript></amp-img></a>', |
| 320 | esc_url( $video_url ), |
| 321 | esc_url( $thumbnail ), |
| 322 | esc_attr__( 'YouTube Poster', 'jetpack' ) // Would be preferable to provide YouTube video title, but not available in this non-oEmbed context. |
| 323 | ); |
| 324 | |
| 325 | $html_attributes = array(); |
| 326 | foreach ( $params as $param_name => $param_value ) { |
| 327 | $html_attributes[] = sprintf( |
| 328 | 'data-param-%s="%s"', |
| 329 | sanitize_key( $param_name ), |
| 330 | esc_attr( $param_value ) |
| 331 | ); |
| 332 | } |
| 333 | |
| 334 | $html = sprintf( |
| 335 | '<amp-youtube data-videoid="%s" %s width="%d" height="%d" layout="responsive">%s</amp-youtube>', |
| 336 | esc_attr( $id ), |
| 337 | implode( ' ', $html_attributes ), // Note: Escaping done above. |
| 338 | esc_attr( $w ), |
| 339 | esc_attr( $h ), |
| 340 | $placeholder |
| 341 | ); |
| 342 | } else { |
| 343 | // In AMP, the AMP_Iframe_Sanitizer will convert into <amp-iframe> as required. |
| 344 | $src = 'https://www.youtube.com/embed'; |
| 345 | if ( $id ) { |
| 346 | $src .= "/$id"; |
| 347 | } |
| 348 | $src = add_query_arg( |
| 349 | array_merge( |
| 350 | array( 'version' => 3 ), |
| 351 | $params |
| 352 | ), |
| 353 | $src |
| 354 | ); |
| 355 | |
| 356 | $layout = $is_amp ? 'layout="responsive" ' : ''; |
| 357 | |
| 358 | $html = sprintf( |
| 359 | '<iframe class="youtube-player" width="%s" height="%s" %ssrc="%s" allowfullscreen="true" style="border:0;" sandbox="allow-scripts allow-same-origin allow-popups allow-presentation allow-popups-to-escape-sandbox"></iframe>', |
| 360 | esc_attr( $w ), |
| 361 | esc_attr( $h ), |
| 362 | $layout, |
| 363 | esc_url( $src ) |
| 364 | ); |
| 365 | } |
| 366 | |
| 367 | // Let's do some alignment wonder in a span, unless we're producing a feed. |
| 368 | if ( ! is_feed() ) { |
| 369 | $alignmentcss = 'text-align:center;'; |
| 370 | if ( isset( $args['align'] ) ) { |
| 371 | switch ( $args['align'] ) { |
| 372 | case 'left': |
| 373 | $alignmentcss = "float:left; width:{$w}px; height:{$h}px; margin-right:10px; margin-bottom: 10px;"; |
| 374 | break; |
| 375 | case 'right': |
| 376 | $alignmentcss = "float:right; width:{$w}px; height:{$h}px; margin-left:10px; margin-bottom: 10px;"; |
| 377 | break; |
| 378 | } |
| 379 | } |
| 380 | |
| 381 | $html = sprintf( |
| 382 | '<span class="embed-youtube" style="%s display: block;">%s</span>', |
| 383 | esc_attr( $alignmentcss ), |
| 384 | $html |
| 385 | ); |
| 386 | |
| 387 | } |
| 388 | |
| 389 | /** |
| 390 | * Format output for Calypso Reader/Notifications/Comments |
| 391 | */ |
| 392 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 393 | require_once WP_CONTENT_DIR . '/lib/display-context.php'; |
| 394 | $context = A8C\Display_Context\get_current_context(); |
| 395 | if ( A8C\Display_Context\NOTIFICATIONS === $context ) { |
| 396 | return sprintf( |
| 397 | '<a href="%1$s" target="_blank" rel="noopener noreferrer"><img src="%2$s" alt="%3$s" /></a>', |
| 398 | esc_url( $video_url ), |
| 399 | esc_url( $thumbnail ), |
| 400 | esc_html__( 'YouTube video', 'jetpack' ) |
| 401 | ); |
| 402 | } |
| 403 | } |
| 404 | |
| 405 | /** |
| 406 | * Filter the YouTube video HTML output. |
| 407 | * |
| 408 | * @module shortcodes |
| 409 | * |
| 410 | * @since 1.2.3 |
| 411 | * |
| 412 | * @param string $html YouTube video HTML output. |
| 413 | */ |
| 414 | $html = apply_filters( 'video_embed_html', $html ); |
| 415 | |
| 416 | return $html; |
| 417 | } |
| 418 | |
| 419 | /** |
| 420 | * Gets the args present in the YouTube shortcode URL. |
| 421 | * |
| 422 | * @since 8.0.0 |
| 423 | * |
| 424 | * @param array $url The parsed URL of the shortcode. |
| 425 | * |
| 426 | * @return array|false The query args of the URL, or false. |
| 427 | */ |
| 428 | function jetpack_shortcode_youtube_args( $url ) { |
| 429 | $qargs = array(); |
| 430 | if ( ! empty( $url['query'] ) ) { |
| 431 | wp_parse_str( $url['query'], $qargs ); |
| 432 | } else { |
| 433 | return false; |
| 434 | } |
| 435 | |
| 436 | $fargs = array(); |
| 437 | if ( ! empty( $url['fragment'] ) ) { |
| 438 | wp_parse_str( $url['fragment'], $fargs ); |
| 439 | } |
| 440 | |
| 441 | return array_merge( $fargs, $qargs ); |
| 442 | } |
| 443 | |
| 444 | /** |
| 445 | * Display the Youtube shortcode. |
| 446 | * |
| 447 | * @param array $atts Shortcode attributes. |
| 448 | * |
| 449 | * @return string The rendered shortcode. |
| 450 | */ |
| 451 | function jetpack_youtube_shortcode( $atts ) { |
| 452 | $url = ( isset( $atts[0] ) ) ? ltrim( $atts[0], '=' ) : shortcode_new_to_old_params( $atts ); |
| 453 | return jetpack_youtube_id( $url ); |
| 454 | } |
| 455 | add_shortcode( 'youtube', 'jetpack_youtube_shortcode' ); |
| 456 | |
| 457 | /** |
| 458 | * Gets the dimensions of the [youtube] shortcode. |
| 459 | * |
| 460 | * Calculates the width and height, taking $content_width into consideration. |
| 461 | * |
| 462 | * @since 8.0.0 |
| 463 | * |
| 464 | * @param array $query_args The query args of the URL. |
| 465 | * |
| 466 | * @return array The width and height of the shortcode. |
| 467 | */ |
| 468 | function jetpack_shortcode_youtube_dimensions( $query_args ) { |
| 469 | $h = null; |
| 470 | global $content_width; |
| 471 | |
| 472 | $input_w = ( isset( $query_args['w'] ) && (int) $query_args['w'] ) ? (int) $query_args['w'] : 0; |
| 473 | $input_h = ( isset( $query_args['h'] ) && (int) $query_args['h'] ) ? (int) $query_args['h'] : 0; |
| 474 | |
| 475 | // If we have $content_width, use it. |
| 476 | if ( ! empty( $content_width ) ) { |
| 477 | $default_width = (int) $content_width; |
| 478 | } else { |
| 479 | // Otherwise get default width from the old, now deprecated embed_size_w option. |
| 480 | $default_width = (int) get_option( 'embed_size_w' ); |
| 481 | } |
| 482 | |
| 483 | // If we don't know those 2 values use a hardcoded width. |
| 484 | if ( empty( $default_width ) ) { |
| 485 | $default_width = 640; |
| 486 | } |
| 487 | |
| 488 | if ( $input_w > 0 && $input_h > 0 ) { |
| 489 | $w = $input_w; |
| 490 | $h = $input_h; |
| 491 | } elseif ( 0 === $input_w && 0 === $input_h ) { |
| 492 | if ( isset( $query_args['fmt'] ) && (int) $query_args['fmt'] ) { |
| 493 | $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 ); |
| 494 | } else { |
| 495 | $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width ); |
| 496 | $h = ceil( ( $w / 16 ) * 9 ); |
| 497 | } |
| 498 | } elseif ( $input_w > 0 ) { |
| 499 | $w = $input_w; |
| 500 | $h = ceil( ( $w / 16 ) * 9 ); |
| 501 | } elseif ( isset( $query_args['fmt'] ) && (int) $query_args['fmt'] ) { |
| 502 | $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 ); |
| 503 | } else { |
| 504 | $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width ); |
| 505 | $h = $input_h; |
| 506 | } |
| 507 | |
| 508 | /** |
| 509 | * Filter the YouTube player width. |
| 510 | * |
| 511 | * @module shortcodes |
| 512 | * |
| 513 | * @since 1.1.0 |
| 514 | * |
| 515 | * @param int $w Width of the YouTube player in pixels. |
| 516 | */ |
| 517 | $w = (int) apply_filters( 'youtube_width', $w ); |
| 518 | |
| 519 | /** |
| 520 | * Filter the YouTube player height. |
| 521 | * |
| 522 | * @module shortcodes |
| 523 | * |
| 524 | * @since 1.1.0 |
| 525 | * |
| 526 | * @param int $h Height of the YouTube player in pixels. |
| 527 | */ |
| 528 | $h = (int) apply_filters( 'youtube_height', $h ); |
| 529 | |
| 530 | return array( $w, $h ); |
| 531 | } |
| 532 | |
| 533 | /** |
| 534 | * For bare URLs on their own line of the form |
| 535 | * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US |
| 536 | * |
| 537 | * @param array $matches Regex partial matches against the URL passed. |
| 538 | * @param array $attr Attributes received in embed response. |
| 539 | * @param string $url Requested URL to be embedded. |
| 540 | */ |
| 541 | function wpcom_youtube_embed_crazy_url( $matches, $attr, $url ) { |
| 542 | return jetpack_youtube_id( $url ); |
| 543 | } |
| 544 | |
| 545 | /** |
| 546 | * Get the regex for Youtube URLs. |
| 547 | */ |
| 548 | function wpcom_youtube_get_regex() { |
| 549 | return '#https?://(?:www\.)?(?:youtube.com/(?:v/|playlist|watch[/\#?])|youtu\.be/).*#i'; |
| 550 | } |
| 551 | |
| 552 | /** |
| 553 | * Add a new handler to automatically transform custom Youtube URLs (like playlists) into embeds. |
| 554 | */ |
| 555 | function wpcom_youtube_embed_crazy_url_init() { |
| 556 | if ( ! defined( 'REST_API_REQUEST' ) ) { |
| 557 | return; |
| 558 | } |
| 559 | |
| 560 | // Register the custom handler to provide the better support for the private video. |
| 561 | wp_embed_register_handler( 'wpcom_youtube_embed_crazy_url', wpcom_youtube_get_regex(), 'wpcom_youtube_embed_crazy_url' ); |
| 562 | } |
| 563 | add_action( 'init', 'wpcom_youtube_embed_crazy_url_init' ); |
| 564 | |
| 565 | /** |
| 566 | * Filters the oEmbed result before any HTTP requests are made for YouTube. |
| 567 | * |
| 568 | * @since 13.9 |
| 569 | * |
| 570 | * @param null|string $result The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. Default null. |
| 571 | * @param string $url The URL that should be inspected for discovery `<link>` tags. |
| 572 | * @param array $args oEmbed remote get arguments. |
| 573 | * @return null|string The UNSANITIZED (and potentially unsafe) HTML that should be used to embed. |
| 574 | * Null if the URL does not belong to the current site. |
| 575 | */ |
| 576 | function wpcom_youtube_filter_pre_oembed_result( $result, $url, $args ) { |
| 577 | // Return early if it's not a YouTube URL. |
| 578 | if ( ! preg_match( wpcom_youtube_get_regex(), $url, $matches ) ) { |
| 579 | return $result; |
| 580 | } |
| 581 | |
| 582 | // Try to get the oembed data by the Core's approach. |
| 583 | $wp_oembed = _wp_oembed_get_object(); |
| 584 | $data = $wp_oembed->get_data( $url, $args ); |
| 585 | if ( $data ) { |
| 586 | /** This filter is documented in wp-includes/class-wp-oembed.php */ |
| 587 | return apply_filters( 'oembed_result', $wp_oembed->data2html( $data, $url ), $url, $args ); |
| 588 | } |
| 589 | |
| 590 | // Fallback to the custom handler if the oembed result is not found, especially for the private video. |
| 591 | return jetpack_youtube_id( $url ); |
| 592 | } |
| 593 | add_filter( 'pre_oembed_result', 'wpcom_youtube_filter_pre_oembed_result', 10, 3 ); |
| 594 | |
| 595 | /** |
| 596 | * Remove the ending question mark from the video id of the YouTube URL. |
| 597 | * |
| 598 | * Example: https://www.youtube.com/watch?v=AVAWwXeOyyQ? |
| 599 | * |
| 600 | * @since 13.9 |
| 601 | * |
| 602 | * @param string $provider URL of the oEmbed provider. |
| 603 | * @param string $url URL of the content to be embedded. |
| 604 | * |
| 605 | * @return string |
| 606 | */ |
| 607 | function wpcom_youtube_oembed_fetch_url( $provider, $url ) { |
| 608 | if ( ! wp_startswith( $provider, 'https://www.youtube.com/oembed' ) ) { |
| 609 | return $provider; |
| 610 | } |
| 611 | |
| 612 | $parsed = wp_parse_url( $url ); |
| 613 | if ( ! isset( $parsed['query'] ) ) { |
| 614 | return $provider; |
| 615 | } |
| 616 | |
| 617 | $query_vars = array(); |
| 618 | wp_parse_str( $parsed['query'], $query_vars ); |
| 619 | if ( isset( $query_vars['v'] ) && wp_endswith( $query_vars['v'], '?' ) ) { |
| 620 | $url = remove_query_arg( array( 'v' ), $url ); |
| 621 | $url = add_query_arg( 'v', preg_replace( '/\?$/', '', $query_vars['v'] ), $url ); |
| 622 | } |
| 623 | |
| 624 | $provider = remove_query_arg( array( 'url' ), $provider ); |
| 625 | $provider = add_query_arg( 'url', rawurlencode( $url ), $provider ); |
| 626 | |
| 627 | return $provider; |
| 628 | } |
| 629 | add_filter( 'oembed_fetch_url', 'wpcom_youtube_oembed_fetch_url', 10, 2 ); |
| 630 | |
| 631 | if ( |
| 632 | ! is_admin() |
| 633 | && |
| 634 | /** |
| 635 | * Allow oEmbeds in Jetpack's Comment form. |
| 636 | * |
| 637 | * @module shortcodes |
| 638 | * |
| 639 | * @since 2.8.0 |
| 640 | * |
| 641 | * @param int $allow_oembed Option to automatically embed all plain text URLs. |
| 642 | */ |
| 643 | apply_filters( 'jetpack_comments_allow_oembed', true ) |
| 644 | // No need for this on WordPress.com, this is done for multiple shortcodes at a time there. |
| 645 | && ( ! defined( 'IS_WPCOM' ) || ! IS_WPCOM ) |
| 646 | ) { |
| 647 | /* |
| 648 | * We attach wp_kses_post to comment_text in default-filters.php with priority of 10 anyway, |
| 649 | * so the iframe gets filtered out. |
| 650 | * Higher priority because we need it before auto-link and autop get to it. |
| 651 | */ |
| 652 | add_filter( 'comment_text', 'jetpack_youtube_link', 1 ); |
| 653 | } |
| 654 | |
| 655 | /** |
| 656 | * Core changes to do_shortcode (https://core.trac.wordpress.org/changeset/34747) broke "improper" shortcodes |
| 657 | * with the format [shortcode=http://url.com]. |
| 658 | * |
| 659 | * This removes the "=" from the shortcode so it can be parsed. |
| 660 | * |
| 661 | * @see https://github.com/Automattic/jetpack/issues/3121 |
| 662 | * |
| 663 | * @param string $content HTML content. |
| 664 | */ |
| 665 | function jetpack_fix_youtube_shortcode_display_filter( $content ) { |
| 666 | if ( strpos( $content, '[youtube=' ) !== false ) { |
| 667 | $content = preg_replace( '@\[youtube=(.*?)\]@', '[youtube $1]', $content ); |
| 668 | } |
| 669 | |
| 670 | return $content; |
| 671 | } |
| 672 | add_filter( 'the_content', 'jetpack_fix_youtube_shortcode_display_filter', 7 ); |
| 673 |