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