youtube.php
| 1 | <?php |
| 2 | |
| 3 | /** |
| 4 | * youtube shortcode |
| 5 | * |
| 6 | * Contains shortcode + some improvements over the Embeds syntax @ |
| 7 | * http://codex.wordpress.org/Embeds |
| 8 | * |
| 9 | * @example [youtube=http://www.youtube.com/watch?v=wq0rXGLs0YM&fs=1&hl=bg_BG] |
| 10 | */ |
| 11 | |
| 12 | /** |
| 13 | * Replaces YouTube embeds with YouTube shortcodes. |
| 14 | * |
| 15 | * @param string $content HTML content. |
| 16 | * @return string The content with YouTube embeds replaced with YouTube shortcodes. |
| 17 | */ |
| 18 | // 2008-07-15: |
| 19 | // <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> |
| 20 | // around 2008-06-06 youtube changed their old embed code to this: |
| 21 | // <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> |
| 22 | // old style was: |
| 23 | // <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> |
| 24 | // 12-2010: |
| 25 | // <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> |
| 26 | // 01-2011: |
| 27 | // <iframe title="YouTube video player" class="youtube-player" type="text/html" width="640" height="390" src="http://www.youtube.com/embed/Qq9El3ki0_g" frameborder="0" allowFullScreen></iframe> |
| 28 | // <iframe class="youtube-player" type="text/html" width="640" height="385" src="http://www.youtube.com/embed/VIDEO_ID" frameborder="0"></iframe> |
| 29 | function youtube_embed_to_short_code( $content ) { |
| 30 | if ( ! is_string( $content ) || false === strpos( $content, 'youtube.com' ) ) { |
| 31 | return $content; |
| 32 | } |
| 33 | |
| 34 | // older codes |
| 35 | $regexp = '!<object(.*?)>.*?<param\s+name=[\'"]movie[\'"]\s+value=[\'"](https?:)?//www\.youtube\.com/v/([^\'"]+)[\'"].*?>.*?</object>!i'; |
| 36 | $regexp_ent = htmlspecialchars( $regexp, ENT_NOQUOTES ); |
| 37 | $old_regexp = '!<embed(?:\s+\w+="[^"]*")*\s+src="https?(?:\:|�*58;)//www\.youtube\.com/v/([^"]+)"(?:\s+\w+="[^"]*")*\s*(?:/>|>\s*</embed>)!'; |
| 38 | $old_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $old_regexp, ENT_NOQUOTES ) ); |
| 39 | |
| 40 | // new code |
| 41 | $ifr_regexp = '!<iframe((?:\s+\w+="[^"]*")*?)\s+src="(https?:)?//(?:www\.)*youtube.com/embed/([^"]+)".*?</iframe>!i'; |
| 42 | $ifr_regexp_ent = str_replace( '&#0*58;', '&#0*58;|�*58;', htmlspecialchars( $ifr_regexp, ENT_NOQUOTES ) ); |
| 43 | |
| 44 | foreach ( array( 'regexp', 'regexp_ent', 'old_regexp', 'old_regexp_ent', 'ifr_regexp', 'ifr_regexp_ent' ) as $reg ) { |
| 45 | if ( ! preg_match_all( $$reg, $content, $matches, PREG_SET_ORDER ) ) { |
| 46 | continue; |
| 47 | } |
| 48 | |
| 49 | foreach ( $matches as $match ) { |
| 50 | // Hack, but '?' should only ever appear once, and |
| 51 | // it should be for the 1st field-value pair in query string, |
| 52 | // if it is present |
| 53 | // YouTube changed their embed code. |
| 54 | // Example of how it is now: |
| 55 | // <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> |
| 56 | // As shown at the start of function, previous YouTube didn't '?' |
| 57 | // the 1st field-value pair. |
| 58 | if ( in_array( $reg, array( 'ifr_regexp', 'ifr_regexp_ent', 'regexp', 'regexp_ent' ) ) ) { |
| 59 | $params = $match[1]; |
| 60 | |
| 61 | if ( in_array( $reg, array( 'ifr_regexp_ent', 'regexp_ent' ) ) ) { |
| 62 | $params = html_entity_decode( $params ); |
| 63 | } |
| 64 | |
| 65 | $params = wp_kses_hair( $params, array( 'http' ) ); |
| 66 | |
| 67 | $width = isset( $params['width'] ) ? (int) $params['width']['value'] : 0; |
| 68 | $height = isset( $params['height'] ) ? (int) $params['height']['value'] : 0; |
| 69 | $wh = ''; |
| 70 | |
| 71 | if ( $width && $height ) { |
| 72 | $wh = "&w=$width&h=$height"; |
| 73 | } |
| 74 | |
| 75 | $url = esc_url_raw( "https://www.youtube.com/watch?v={$match[3]}{$wh}" ); |
| 76 | } else { |
| 77 | $match[1] = str_replace( '?', '&', $match[1] ); |
| 78 | |
| 79 | $url = esc_url_raw( 'https://www.youtube.com/watch?v=' . html_entity_decode( $match[1] ) ); |
| 80 | } |
| 81 | |
| 82 | $content = str_replace( $match[0], "[youtube $url]", $content ); |
| 83 | |
| 84 | /** |
| 85 | * Fires before the YouTube embed is transformed into a shortcode. |
| 86 | * |
| 87 | * @module shortcodes |
| 88 | * |
| 89 | * @since 1.2.0 |
| 90 | * |
| 91 | * @param string youtube Shortcode name. |
| 92 | * @param string $url YouTube video URL. |
| 93 | */ |
| 94 | do_action( 'jetpack_embed_to_shortcode', 'youtube', $url ); |
| 95 | } |
| 96 | } |
| 97 | |
| 98 | return $content; |
| 99 | } |
| 100 | |
| 101 | add_filter( 'pre_kses', 'youtube_embed_to_short_code' ); |
| 102 | |
| 103 | /** |
| 104 | * Replaces plain-text links to YouTube videos with YouTube embeds. |
| 105 | * |
| 106 | * @param string $content HTML content |
| 107 | * @return string The content with embeds instead of URLs |
| 108 | */ |
| 109 | function youtube_link( $content ) { |
| 110 | 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/' ); |
| 111 | } |
| 112 | |
| 113 | /** |
| 114 | * Callback function for the regex that replaces YouTube URLs with |
| 115 | * YouTube embeds. |
| 116 | */ |
| 117 | function youtube_link_callback( $matches ) { |
| 118 | return "\n" . youtube_id( $matches[0] ) . "\n"; |
| 119 | } |
| 120 | |
| 121 | /** |
| 122 | * Normalizes a YouTube URL to include a v= parameter and a query string free of encoded ampersands. |
| 123 | * |
| 124 | * @param string $url |
| 125 | * @return string The normalized URL |
| 126 | */ |
| 127 | if ( ! function_exists( 'youtube_sanitize_url' ) ) : |
| 128 | function youtube_sanitize_url( $url ) { |
| 129 | $url = trim( $url, ' "' ); |
| 130 | $url = trim( $url ); |
| 131 | $url = str_replace( array( 'youtu.be/', '/v/', '#!v=', '&', '&', 'playlist' ), array( 'youtu.be/?v=', '/?v=', '?v=', '&', '&', 'videoseries' ), $url ); |
| 132 | |
| 133 | // 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. |
| 134 | $query_string_start = strpos( $url, '?' ); |
| 135 | |
| 136 | if ( false !== $query_string_start ) { |
| 137 | $url = substr( $url, 0, $query_string_start + 1 ) . str_replace( '?', '&', substr( $url, $query_string_start + 1 ) ); |
| 138 | } |
| 139 | |
| 140 | return $url; |
| 141 | } |
| 142 | endif; |
| 143 | |
| 144 | /* |
| 145 | * url can be: |
| 146 | * http://www.youtube.com/embed/videoseries?list=PL94269DA08231042B&hl=en_US |
| 147 | * http://www.youtube.com/watch#!v=H2Ncxw1xfck |
| 148 | * http://www.youtube.com/watch?v=H2Ncxw1xfck |
| 149 | * http://www.youtube.com/watch?v=H2Ncxw1xfck&w=320&h=240&fmt=1&rel=0&showsearch=1&hd=0 |
| 150 | * http://www.youtube.com/v/jF-kELmmvgA |
| 151 | * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US |
| 152 | * http://youtu.be/Rrohlqeir5E |
| 153 | */ |
| 154 | |
| 155 | /** |
| 156 | * Converts a YouTube URL into an embedded YouTube video. |
| 157 | */ |
| 158 | function youtube_id( $url ) { |
| 159 | if ( ! $id = jetpack_get_youtube_id( $url ) ) { |
| 160 | return '<!--YouTube Error: bad URL entered-->'; |
| 161 | } |
| 162 | |
| 163 | $url = youtube_sanitize_url( $url ); |
| 164 | $url = parse_url( $url ); |
| 165 | |
| 166 | if ( ! isset( $url['query'] ) ) { |
| 167 | return false; |
| 168 | } |
| 169 | |
| 170 | if ( isset( $url['fragment'] ) ) { |
| 171 | wp_parse_str( $url['fragment'], $fargs ); |
| 172 | } else { |
| 173 | $fargs = array(); |
| 174 | } |
| 175 | wp_parse_str( $url['query'], $qargs ); |
| 176 | |
| 177 | $qargs = array_merge( $fargs, $qargs ); |
| 178 | |
| 179 | // calculate the width and height, taking content_width into consideration |
| 180 | global $content_width; |
| 181 | |
| 182 | $input_w = ( isset( $qargs['w'] ) && intval( $qargs['w'] ) ) ? intval( $qargs['w'] ) : 0; |
| 183 | $input_h = ( isset( $qargs['h'] ) && intval( $qargs['h'] ) ) ? intval( $qargs['h'] ) : 0; |
| 184 | |
| 185 | // If we have $content_width, use it. |
| 186 | if ( ! empty( $content_width ) ) { |
| 187 | $default_width = $content_width; |
| 188 | } else { |
| 189 | // Otherwise get default width from the old, now deprecated embed_size_w option. |
| 190 | $default_width = get_option( 'embed_size_w' ); |
| 191 | } |
| 192 | |
| 193 | // If we don't know those 2 values use a hardcoded width.h |
| 194 | if ( empty( $default_width ) ) { |
| 195 | $default_width = 640; |
| 196 | } |
| 197 | |
| 198 | if ( $input_w > 0 && $input_h > 0 ) { |
| 199 | $w = $input_w; |
| 200 | $h = $input_h; |
| 201 | } elseif ( 0 == $input_w && 0 == $input_h ) { |
| 202 | if ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) { |
| 203 | $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 ); |
| 204 | } else { |
| 205 | $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width ); |
| 206 | $h = ceil( ( $w / 16 ) * 9 ); |
| 207 | } |
| 208 | } elseif ( $input_w > 0 ) { |
| 209 | $w = $input_w; |
| 210 | $h = ceil( ( $w / 16 ) * 9 ); |
| 211 | } else { |
| 212 | if ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) { |
| 213 | $w = ( ! empty( $content_width ) ? min( $content_width, 480 ) : 480 ); |
| 214 | } else { |
| 215 | $w = ( ! empty( $content_width ) ? min( $content_width, $default_width ) : $default_width ); |
| 216 | $h = $input_h; |
| 217 | } |
| 218 | } |
| 219 | |
| 220 | /** |
| 221 | * Filter the YouTube player width. |
| 222 | * |
| 223 | * @module shortcodes |
| 224 | * |
| 225 | * @since 1.1.0 |
| 226 | * |
| 227 | * @param int $w Width of the YouTube player in pixels. |
| 228 | */ |
| 229 | $w = (int) apply_filters( 'youtube_width', $w ); |
| 230 | |
| 231 | /** |
| 232 | * Filter the YouTube player height. |
| 233 | * |
| 234 | * @module shortcodes |
| 235 | * |
| 236 | * @since 1.1.0 |
| 237 | * |
| 238 | * @param int $h Height of the YouTube player in pixels. |
| 239 | */ |
| 240 | $h = (int) apply_filters( 'youtube_height', $h ); |
| 241 | |
| 242 | $rel = ( isset( $qargs['rel'] ) && 0 == $qargs['rel'] ) ? 0 : 1; |
| 243 | $search = ( isset( $qargs['showsearch'] ) && 1 == $qargs['showsearch'] ) ? 1 : 0; |
| 244 | $info = ( isset( $qargs['showinfo'] ) && 0 == $qargs['showinfo'] ) ? 0 : 1; |
| 245 | $iv = ( isset( $qargs['iv_load_policy'] ) && 3 == $qargs['iv_load_policy'] ) ? 3 : 1; |
| 246 | |
| 247 | $fmt = ( isset( $qargs['fmt'] ) && intval( $qargs['fmt'] ) ) ? '&fmt=' . (int) $qargs['fmt'] : ''; |
| 248 | |
| 249 | if ( ! isset( $qargs['autohide'] ) || ( $qargs['autohide'] < 0 || 2 < $qargs['autohide'] ) ) { |
| 250 | $autohide = '&autohide=2'; |
| 251 | } else { |
| 252 | $autohide = '&autohide=' . absint( $qargs['autohide'] ); |
| 253 | } |
| 254 | |
| 255 | $start = 0; |
| 256 | if ( isset( $qargs['start'] ) ) { |
| 257 | $start = intval( $qargs['start'] ); |
| 258 | } elseif ( isset( $qargs['t'] ) ) { |
| 259 | $time_pieces = preg_split( '/(?<=\D)(?=\d+)/', $qargs['t'] ); |
| 260 | |
| 261 | foreach ( $time_pieces as $time_piece ) { |
| 262 | $int = (int) $time_piece; |
| 263 | switch ( substr( $time_piece, -1 ) ) { |
| 264 | case 'h': |
| 265 | $start += $int * 3600; |
| 266 | break; |
| 267 | case 'm': |
| 268 | $start += $int * 60; |
| 269 | break; |
| 270 | case 's': |
| 271 | $start += $int; |
| 272 | break; |
| 273 | } |
| 274 | } |
| 275 | } |
| 276 | |
| 277 | $start = $start ? '&start=' . $start : ''; |
| 278 | $end = ( isset( $qargs['end'] ) && intval( $qargs['end'] ) ) ? '&end=' . (int) $qargs['end'] : ''; |
| 279 | $hd = ( isset( $qargs['hd'] ) && intval( $qargs['hd'] ) ) ? '&hd=' . (int) $qargs['hd'] : ''; |
| 280 | |
| 281 | $vq = ( isset( $qargs['vq'] ) && in_array( $qargs['vq'], array( 'hd720', 'hd1080' ) ) ) ? '&vq=' . $qargs['vq'] : ''; |
| 282 | |
| 283 | $cc = ( isset( $qargs['cc_load_policy'] ) ) ? '&cc_load_policy=1' : ''; |
| 284 | $cc_lang = ( isset( $qargs['cc_lang_pref'] ) ) ? '&cc_lang_pref=' . preg_replace( '/[^_a-z0-9-]/i', '', $qargs['cc_lang_pref'] ) : ''; |
| 285 | |
| 286 | $wmode = ( isset( $qargs['wmode'] ) && in_array( strtolower( $qargs['wmode'] ), array( 'opaque', 'window', 'transparent' ) ) ) ? $qargs['wmode'] : 'transparent'; |
| 287 | |
| 288 | $theme = ( isset( $qargs['theme'] ) && in_array( strtolower( $qargs['theme'] ), array( 'dark', 'light' ) ) ) ? '&theme=' . $qargs['theme'] : ''; |
| 289 | |
| 290 | $autoplay = ''; |
| 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( $qargs['autoplay'] ) ) { |
| 301 | $autoplay = '&autoplay=' . (int) $qargs['autoplay']; |
| 302 | } |
| 303 | |
| 304 | if ( ( isset( $url['path'] ) && '/videoseries' == $url['path'] ) || isset( $qargs['list'] ) ) { |
| 305 | $html = "<iframe class='youtube-player' type='text/html' width='$w' height='$h' src='" . esc_url( "https://www.youtube.com/embed/videoseries?list=$id&hl=en_US" ) . "' allowfullscreen='true' style='border:0;'></iframe>"; |
| 306 | } else { |
| 307 | $html = "<iframe class='youtube-player' type='text/html' width='$w' height='$h' src='" . esc_url( "https://www.youtube.com/embed/$id?version=3&rel=$rel&fs=1$fmt$autohide&showsearch=$search&showinfo=$info&iv_load_policy=$iv$start$end$hd&wmode=$wmode$theme$autoplay{$cc}{$cc_lang}" ) . "' allowfullscreen='true' style='border:0;'></iframe>"; |
| 308 | } |
| 309 | |
| 310 | // Let's do some alignment wonder in a span, unless we're producing a feed |
| 311 | if ( ! is_feed() ) { |
| 312 | $alignmentcss = 'text-align:center;'; |
| 313 | if ( isset( $qargs['align'] ) ) { |
| 314 | switch ( $qargs['align'] ) { |
| 315 | case 'left': |
| 316 | $alignmentcss = "float:left; width:{$w}px; height:{$h}px; margin-right:10px; margin-bottom: 10px;"; |
| 317 | break; |
| 318 | case 'right': |
| 319 | $alignmentcss = "float:right; width:{$w}px; height:{$h}px; margin-left:10px; margin-bottom: 10px;"; |
| 320 | break; |
| 321 | } |
| 322 | } |
| 323 | |
| 324 | $html = sprintf( |
| 325 | '<span class="embed-youtube" style="%s display: block;">%s</span>', |
| 326 | esc_attr( $alignmentcss ), |
| 327 | $html |
| 328 | ); |
| 329 | |
| 330 | } |
| 331 | |
| 332 | /** |
| 333 | * Filter the YouTube video HTML output. |
| 334 | * |
| 335 | * @module shortcodes |
| 336 | * |
| 337 | * @since 1.2.3 |
| 338 | * |
| 339 | * @param string $html YouTube video HTML output. |
| 340 | */ |
| 341 | $html = apply_filters( 'video_embed_html', $html ); |
| 342 | |
| 343 | return $html; |
| 344 | } |
| 345 | |
| 346 | function youtube_shortcode( $atts ) { |
| 347 | return youtube_id( ( isset( $atts[0] ) ) ? ltrim( $atts[0], '=' ) : shortcode_new_to_old_params( $atts ) ); |
| 348 | } |
| 349 | |
| 350 | add_shortcode( 'youtube', 'youtube_shortcode' ); |
| 351 | |
| 352 | /** |
| 353 | * For bare URLs on their own line of the form |
| 354 | * http://www.youtube.com/v/9FhMMmqzbD8?fs=1&hl=en_US |
| 355 | */ |
| 356 | function wpcom_youtube_embed_crazy_url( $matches, $attr, $url ) { |
| 357 | return youtube_id( $url ); |
| 358 | } |
| 359 | |
| 360 | function wpcom_youtube_embed_crazy_url_init() { |
| 361 | wp_embed_register_handler( 'wpcom_youtube_embed_crazy_url', '#https?://(?:www\.)?(?:youtube.com/(?:v/|playlist|watch[/\#?])|youtu\.be/).*#i', 'wpcom_youtube_embed_crazy_url' ); |
| 362 | } |
| 363 | |
| 364 | add_action( 'init', 'wpcom_youtube_embed_crazy_url_init' ); |
| 365 | |
| 366 | /** |
| 367 | * Allow oEmbeds in Jetpack's Comment form. |
| 368 | * |
| 369 | * @module shortcodes |
| 370 | * |
| 371 | * @since 2.8.0 |
| 372 | * |
| 373 | * @param int get_option('embed_autourls') Option to automatically embed all plain text URLs. |
| 374 | */ |
| 375 | if ( ! is_admin() && apply_filters( 'jetpack_comments_allow_oembed', true ) ) { |
| 376 | // We attach wp_kses_post to comment_text in default-filters.php with priority of 10 anyway, so the iframe gets filtered out. |
| 377 | // Higher priority because we need it before auto-link and autop get to it |
| 378 | add_filter( 'comment_text', 'youtube_link', 1 ); |
| 379 | } |
| 380 | |
| 381 | /** |
| 382 | * Core changes to do_shortcode (https://core.trac.wordpress.org/changeset/34747) broke "improper" shortcodes |
| 383 | * with the format [shortcode=http://url.com]. |
| 384 | * |
| 385 | * This removes the "=" from the shortcode so it can be parsed. |
| 386 | * |
| 387 | * @see https://github.com/Automattic/jetpack/issues/3121 |
| 388 | */ |
| 389 | function jetpack_fix_youtube_shortcode_display_filter( $content ) { |
| 390 | if ( strpos( $content, '[youtube=' ) !== false ) { |
| 391 | $content = preg_replace( '@\[youtube=(.*?)\]@', '[youtube $1]', $content ); |
| 392 | } |
| 393 | |
| 394 | return $content; |
| 395 | } |
| 396 | add_filter( 'the_content', 'jetpack_fix_youtube_shortcode_display_filter', 7 ); |
| 397 |