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Diffstat (limited to 'plugins/jetpack/modules/shortcodes/instagram.php')
| -rw-r--r-- | plugins/jetpack/modules/shortcodes/instagram.php | 178 |
1 files changed, 178 insertions, 0 deletions
diff --git a/plugins/jetpack/modules/shortcodes/instagram.php b/plugins/jetpack/modules/shortcodes/instagram.php new file mode 100644 index 00000000..52f83747 --- /dev/null +++ b/plugins/jetpack/modules/shortcodes/instagram.php @@ -0,0 +1,178 @@ +<?php + + +/** + * Embed Reversal for Instagram + * + * Hooked to pre_kses, converts an embed code from Instagram.com to an oEmbeddable URL. + * @return (string) the filtered or the original content + **/ +function jetpack_instagram_embed_reversal( $content ) { + if ( false === stripos( $content, 'instagram.com' ) ) + return $content; + + /* Sample embed code: + <blockquote class="instagram-media" data-instgrm-captioned data-instgrm-version="2" style=" background:#FFF; border:0; border-radius:3px; box-shadow:0 0 1px 0 rgba(0,0,0,0.5),0 1px 10px 0 rgba(0,0,0,0.15); margin: 1px; max-width:658px; padding:0; width:99.375%; width:-webkit-calc(100% - 2px); width:calc(100% - 2px);"><div style="padding:8px;"><div style=" background:#F8F8F8; line-height:0; margin-top:40px; padding-bottom:55%; padding-top:45%; text-align:center; width:100%;"><div style="position:relative;"><div style=" -webkit-animation:dkaXkpbBxI 1s ease-out infinite; animation:dkaXkpbBxI 1s ease-out infinite; background:url(data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAACwAAAAsCAMAAAApWqozAAAAGFBMVEUiIiI9PT0eHh4gIB4hIBkcHBwcHBwcHBydr+JQAAAACHRSTlMABA4YHyQsM5jtaMwAAADfSURBVDjL7ZVBEgMhCAQBAf//42xcNbpAqakcM0ftUmFAAIBE81IqBJdS3lS6zs3bIpB9WED3YYXFPmHRfT8sgyrCP1x8uEUxLMzNWElFOYCV6mHWWwMzdPEKHlhLw7NWJqkHc4uIZphavDzA2JPzUDsBZziNae2S6owH8xPmX8G7zzgKEOPUoYHvGz1TBCxMkd3kwNVbU0gKHkx+iZILf77IofhrY1nYFnB/lQPb79drWOyJVa/DAvg9B/rLB4cC+Nqgdz/TvBbBnr6GBReqn/nRmDgaQEej7WhonozjF+Y2I/fZou/qAAAAAElFTkSuQmCC); display:block; height:44px; margin:0 auto -44px; position:relative; top:-44px; width:44px;"></div><span style=" color:#c9c8cd; font-family:Arial,sans-serif; font-size:12px; font-style:normal; font-weight:bold; position:relative; top:15px;">Loading</span></div></div><p style=" font-family:Arial,sans-serif; font-size:14px; line-height:17px; margin:8px 0 0 0; padding:0 4px; word-wrap:break-word;"> Balloons</p><p style=" line-height:32px; margin-bottom:0; margin-top:8px; padding:0; text-align:center;"> <a href="https://instagram.com/p/r9vfPrmjeB/" style=" color:#c9c8cd; font-family:Arial,sans-serif; font-size:14px; font-style:normal; font-weight:normal; text-decoration:none;" target="_top"> View on Instagram</a></p></div><style>@-webkit-keyframes"dkaXkpbBxI"{ 0%{opacity:0.5;} 50%{opacity:1;} 100%{opacity:0.5;} } @keyframes"dkaXkpbBxI"{ 0%{opacity:0.5;} 50%{opacity:1;} 100%{opacity:0.5;} }</style></blockquote> + <script async defer src="https://platform.instagram.com/en_US/embeds.js"></script> + */ + + $regexes = array(); + + // new style js + $regexes[] = '#<blockquote[^>]+?class="instagram-media"[^>](.+?)>(.+?)</blockquote><script[^>]+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"></script>#ix'; + + // Let's play nice with the visual editor too. + $regexes[] = '#<blockquote(?:[^&]|&(?!gt;))+?class="instagram-media"(?:[^&]|&(?!gt;))(.+?)>(.+?)</blockquote><script(?:[^&]|&(?!gt;))+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"(?:[^&]|&(?!gt;))*+></script>#ix'; + + // old style iframe + $regexes[] = '#<iframe[^>]+?src="(?:https?:)?//instagram\.com/p/([^"\'/]++)[^"\']*?"[^>]*+>\s*?</iframe>#i'; + + // Let's play nice with the visual editor too. + $regexes[] = '#<iframe(?:[^&]|&(?!gt;))+?src="(?:https?:)?//instagram\.com/p/([^"\'/]++)[^"\']*?"(?:[^&]|&(?!gt;))*+>\s*?</iframe>#i'; + + foreach ( $regexes as $regex ) { + if ( ! preg_match_all( $regex, $content, $matches, PREG_SET_ORDER ) ) + continue; + + foreach ( $matches as $match ) { + if ( ! preg_match( '#(https?:)?//instagr(\.am|am\.com)/p/([^/]*)#i', $match[2], $url_matches ) ) + continue; + + // Since we support Instagram via oEmbed, we simply leave a link on a line by itself. + $replace_regex = sprintf( '#\s*%s\s*#', preg_quote( $match[0], '#' ) ); + $url = esc_url( $url_matches[0] ); + + $content = preg_replace( $replace_regex, sprintf( "\n\n%s\n\n", $url ), $content ); + /** This action is documented in modules/shortcodes/youtube.php */ + do_action( 'jetpack_embed_to_shortcode', 'instagram', $url ); + } + } + + return $content; +} +add_filter( 'pre_kses', 'jetpack_instagram_embed_reversal' ); + + +/** + * Instagram + */ +wp_oembed_remove_provider( '#http://instagr(\.am|am\.com)/p/.*#i' ); // remove core's oEmbed support so we can override +wp_embed_register_handler( 'jetpack_instagram', '#http(s?)://instagr(\.am|am\.com)/p/([^/]*)#i', 'jetpack_instagram_handler' ); + +function jetpack_instagram_handler( $matches, $atts, $url ) { + global $content_width; + static $did_script; + + // keep a copy of the passed-in URL since it's modified below + $passed_url = $url; + + $max_width = 698; + $min_width = 320; + + if ( is_feed() ) { + $media_url = sprintf( 'http://instagr.am/p/%s/media/?size=l', $matches[2] ); + return sprintf( '<a href="%s" title="%s"><img src="%s" alt="Instagram Photo" /></a>', esc_url( $url ), esc_attr__( 'View on Instagram', 'jetpack' ), esc_url( $media_url ) ); + } + + $atts = shortcode_atts( array( + 'width' => isset( $content_width ) ? $content_width : $max_width, + 'hidecaption' => false, + ), $atts ); + + $atts['width'] = absint( $atts['width'] ); + if ( $atts['width'] > $max_width || $min_width > $atts['width'] ) + $atts['width'] = $max_width; + + + // remove the modal param from the URL + $url = remove_query_arg( 'modal', $url ); + + // force .com instead of .am for https support + $url = str_replace( 'instagr.am', 'instagram.com', $url ); + + // The oembed endpoint expects HTTP, but HTTP requests 301 to HTTPS + $instagram_http_url = str_replace( 'https://', 'http://', $url ); + $instagram_https_url = str_replace( 'http://', 'https://', $url ); + + $url_args = array( + 'url' => $instagram_http_url, + 'maxwidth' => $atts['width'], + ); + + if ( $atts['hidecaption'] ) { + $url_args['hidecaption'] = 'true'; + } + + $url = esc_url_raw( add_query_arg( $url_args, 'https://api.instagram.com/oembed/' ) ); + + /** + * Filter Object Caching for response from Instagram. + * + * Allow enabling of object caching for the response sent by Instagram when querying for Instagram image HTML. + * + * @since 3.3.0 + * + * @param bool false Object caching is off by default. + * @param array $matches Array of Instagram URLs found in the post. + * @param array $atts Instagram Shortcode attributes. + * @param string $passed_url Instagram API URL. + */ + $response_body_use_cache = apply_filters( 'instagram_cache_oembed_api_response_body', false, $matches, $atts, $passed_url ); + $response_body = false; + if ( $response_body_use_cache ) { + $cache_key = 'oembed_response_body_' . md5( $url ); + $response_body = wp_cache_get( $cache_key, 'instagram_embeds' ); + } + + if ( ! $response_body ) { + // Not using cache (default case) or cache miss + $instagram_response = wp_remote_get( $url, array( 'redirection' => 0 ) ); + if ( is_wp_error( $instagram_response ) || 200 != $instagram_response['response']['code'] || empty( $instagram_response['body'] ) ) { + return "<!-- instagram error: invalid oratv resource -->"; + } + + $response_body = json_decode( $instagram_response['body'] ); + if ( $response_body_use_cache ) { + // if caching it is short-lived since this is a "Cache-Control: no-cache" resource + wp_cache_set( $cache_key, $response_body, 'instagram_embeds', HOUR_IN_SECONDS + mt_rand( 0, HOUR_IN_SECONDS ) ); + } + } + + if ( ! empty( $response_body->html ) ) { + if ( ! $did_script ) { + $did_script = true; + add_action( 'wp_footer', 'jetpack_instagram_add_script' ); + } + + // there's a script in the response, which we strip on purpose since it's added above + $ig_embed = preg_replace( '@<(script)[^>]*?>.*?</\\1>@si', '', $response_body->html ); + } else { + $ig_embed = jetpack_instagram_iframe_embed( $instagram_https_url, $atts ); + } + return $ig_embed; +} + +function jetpack_instagram_add_script() { + ?> + <script async defer src="//platform.instagram.com/en_US/embeds.js"></script> + <?php +} + +// [instagram url="http://instagram.com/p/PSbF9sEIGP/"] +// [instagram url="http://instagram.com/p/PSbF9sEIGP/" width="300"] +add_shortcode( 'instagram', 'jetpack_shortcode_instagram' ); +function jetpack_shortcode_instagram( $atts ) { + global $wp_embed; + + if ( empty( $atts['url'] ) || ! preg_match( '#http(s?)://instagr(\.am|am\.com)/p/([^/]*)#i', $atts['url'] ) ) + return; + + return $wp_embed->shortcode( $atts, $atts['url'] ); +} + +function jetpack_instagram_iframe_embed( $url, $atts ) { + $atts['height'] = intval( $atts['width'] ) + 98; // http://www.niemanlab.org/2013/07/instagram-embeds-are-here-but-not-quite-perfect-for-publishers/ + $url = trailingslashit( $url ) . 'embed/'; + + return sprintf( '<iframe class="jp-embed-instagram" src="%s" width="%s" height="%s" frameborder="0" scrolling="no" allowtransparency="true"></iframe>', esc_url( $url ), esc_attr( $atts['width'] ), esc_attr( $atts['height'] ) ); +} |