instagram.php
| 1 | <?php |
| 2 | |
| 3 | |
| 4 | /** |
| 5 | * Embed Reversal for Instagram |
| 6 | * |
| 7 | * Hooked to pre_kses, converts an embed code from Instagram.com to an oEmbeddable URL. |
| 8 | * |
| 9 | * @return string The filtered or the original content. |
| 10 | **/ |
| 11 | function jetpack_instagram_embed_reversal( $content ) { |
| 12 | if ( ! is_string( $content ) || false === stripos( $content, 'instagram.com' ) ) { |
| 13 | return $content; |
| 14 | } |
| 15 | |
| 16 | /* |
| 17 | Sample embed code: |
| 18 | <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> |
| 19 | <script async defer src="https://platform.instagram.com/en_US/embeds.js"></script> |
| 20 | */ |
| 21 | |
| 22 | $regexes = array(); |
| 23 | |
| 24 | // new style js |
| 25 | $regexes[] = '#<blockquote[^>]+?class="instagram-media"[^>](.+?)>(.+?)</blockquote><script[^>]+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"></script>#ix'; |
| 26 | |
| 27 | // Let's play nice with the visual editor too. |
| 28 | $regexes[] = '#<blockquote(?:[^&]|&(?!gt;))+?class="instagram-media"(?:[^&]|&(?!gt;))(.+?)>(.+?)</blockquote><script(?:[^&]|&(?!gt;))+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"(?:[^&]|&(?!gt;))*+></script>#ix'; |
| 29 | |
| 30 | // old style iframe |
| 31 | $regexes[] = '#<iframe[^>]+?src="(?:https?:)?//instagram\.com/p/([^"\'/]++)[^"\']*?"[^>]*+>\s*?</iframe>#i'; |
| 32 | |
| 33 | // Let's play nice with the visual editor too. |
| 34 | $regexes[] = '#<iframe(?:[^&]|&(?!gt;))+?src="(?:https?:)?//instagram\.com/p/([^"\'/]++)[^"\']*?"(?:[^&]|&(?!gt;))*+>\s*?</iframe>#i'; |
| 35 | |
| 36 | foreach ( $regexes as $regex ) { |
| 37 | if ( ! preg_match_all( $regex, $content, $matches, PREG_SET_ORDER ) ) { |
| 38 | continue; |
| 39 | } |
| 40 | |
| 41 | foreach ( $matches as $match ) { |
| 42 | if ( ! preg_match( '#(https?:)?//instagr(\.am|am\.com)/p/([^/]*)#i', $match[2], $url_matches ) ) { |
| 43 | continue; |
| 44 | } |
| 45 | |
| 46 | // Since we support Instagram via oEmbed, we simply leave a link on a line by itself. |
| 47 | $replace_regex = sprintf( '#\s*%s\s*#', preg_quote( $match[0], '#' ) ); |
| 48 | $url = esc_url( $url_matches[0] ); |
| 49 | |
| 50 | $content = preg_replace( $replace_regex, sprintf( "\n\n%s\n\n", $url ), $content ); |
| 51 | /** This action is documented in modules/shortcodes/youtube.php */ |
| 52 | do_action( 'jetpack_embed_to_shortcode', 'instagram', $url ); |
| 53 | } |
| 54 | } |
| 55 | |
| 56 | return $content; |
| 57 | } |
| 58 | |
| 59 | add_filter( 'pre_kses', 'jetpack_instagram_embed_reversal' ); |
| 60 | |
| 61 | /** |
| 62 | |
| 63 | */ |
| 64 | wp_oembed_remove_provider( '#https?://(www\.)?instagr(\.am|am\.com)/p/.*#i' ); // remove core's oEmbed support so we can override |
| 65 | wp_embed_register_handler( 'jetpack_instagram', '#http(s?)://(www\.)?instagr(\.am|am\.com)/p/([^/]*)#i', 'jetpack_instagram_handler' ); |
| 66 | |
| 67 | function jetpack_instagram_handler( $matches, $atts, $url ) { |
| 68 | global $content_width; |
| 69 | |
| 70 | // keep a copy of the passed-in URL since it's modified below |
| 71 | $passed_url = $url; |
| 72 | |
| 73 | $max_width = 698; |
| 74 | $min_width = 320; |
| 75 | |
| 76 | if ( is_feed() ) { |
| 77 | $media_url = sprintf( 'http://instagr.am/p/%s/media/?size=l', $matches[4] ); |
| 78 | return sprintf( '<a href="%s" title="%s" target="_blank"><img src="%s" alt="Instagram Photo" /></a>', esc_url( $url ), esc_attr__( 'View on Instagram', 'jetpack' ), esc_url( $media_url ) ); |
| 79 | } |
| 80 | |
| 81 | $atts = shortcode_atts( |
| 82 | array( |
| 83 | 'width' => isset( $content_width ) ? $content_width : $max_width, |
| 84 | 'hidecaption' => false, |
| 85 | ), |
| 86 | $atts |
| 87 | ); |
| 88 | |
| 89 | $atts['width'] = absint( $atts['width'] ); |
| 90 | if ( $atts['width'] > $max_width ) { |
| 91 | $atts['width'] = $max_width; |
| 92 | } elseif ( $atts['width'] < $min_width ) { |
| 93 | $atts['width'] = $min_width; |
| 94 | } |
| 95 | |
| 96 | // remove the modal param from the URL |
| 97 | $url = remove_query_arg( 'modal', $url ); |
| 98 | |
| 99 | // force .com instead of .am for https support |
| 100 | $url = str_replace( 'instagr.am', 'instagram.com', $url ); |
| 101 | |
| 102 | // The oembed endpoint expects HTTP, but HTTP requests 301 to HTTPS |
| 103 | $instagram_http_url = str_replace( 'https://', 'http://', $url ); |
| 104 | $instagram_https_url = str_replace( 'http://', 'https://', $url ); |
| 105 | |
| 106 | $url_args = array( |
| 107 | 'url' => $instagram_http_url, |
| 108 | 'maxwidth' => $atts['width'], |
| 109 | ); |
| 110 | |
| 111 | if ( $atts['hidecaption'] ) { |
| 112 | $url_args['hidecaption'] = 'true'; |
| 113 | } |
| 114 | |
| 115 | $url = esc_url_raw( add_query_arg( $url_args, 'https://api.instagram.com/oembed/' ) ); |
| 116 | |
| 117 | /** |
| 118 | * Filter Object Caching for response from Instagram. |
| 119 | * |
| 120 | * Allow enabling of object caching for the response sent by Instagram when querying for Instagram image HTML. |
| 121 | * |
| 122 | * @module shortcodes |
| 123 | * |
| 124 | * @since 3.3.0 |
| 125 | * |
| 126 | * @param bool false Object caching is off by default. |
| 127 | * @param array $matches Array of Instagram URLs found in the post. |
| 128 | * @param array $atts Instagram Shortcode attributes. |
| 129 | * @param string $passed_url Instagram API URL. |
| 130 | */ |
| 131 | $response_body_use_cache = apply_filters( 'instagram_cache_oembed_api_response_body', false, $matches, $atts, $passed_url ); |
| 132 | $response_body = false; |
| 133 | if ( $response_body_use_cache ) { |
| 134 | $cache_key = 'oembed_response_body_' . md5( $url ); |
| 135 | $response_body = wp_cache_get( $cache_key, 'instagram_embeds' ); |
| 136 | } |
| 137 | |
| 138 | if ( ! $response_body ) { |
| 139 | // Not using cache (default case) or cache miss |
| 140 | $instagram_response = wp_remote_get( $url, array( 'redirection' => 0 ) ); |
| 141 | if ( is_wp_error( $instagram_response ) || 200 != $instagram_response['response']['code'] || empty( $instagram_response['body'] ) ) { |
| 142 | return '<!-- instagram error: invalid instagram resource -->'; |
| 143 | } |
| 144 | |
| 145 | $response_body = json_decode( $instagram_response['body'] ); |
| 146 | if ( $response_body_use_cache ) { |
| 147 | // if caching it is short-lived since this is a "Cache-Control: no-cache" resource |
| 148 | wp_cache_set( $cache_key, $response_body, 'instagram_embeds', HOUR_IN_SECONDS + mt_rand( 0, HOUR_IN_SECONDS ) ); |
| 149 | } |
| 150 | } |
| 151 | |
| 152 | if ( ! empty( $response_body->html ) ) { |
| 153 | wp_enqueue_script( |
| 154 | 'jetpack-instagram-embed', |
| 155 | Jetpack::get_file_url_for_environment( '_inc/build/shortcodes/js/instagram.min.js', 'modules/shortcodes/js/instagram.js' ), |
| 156 | array( 'jquery' ), |
| 157 | false, |
| 158 | true |
| 159 | ); |
| 160 | // there's a script in the response, which we strip on purpose since it's added by this ^ script |
| 161 | $ig_embed = preg_replace( '@<(script)[^>]*?>.*?</\\1>@si', '', $response_body->html ); |
| 162 | |
| 163 | return $ig_embed; |
| 164 | } |
| 165 | |
| 166 | return '<!-- instagram error: no embed found -->'; |
| 167 | } |
| 168 | |
| 169 | // filters instagram's username format to the expected format that matches the embed handler |
| 170 | wp_embed_register_handler( 'jetpack_instagram_alternate_format', '#http(s?)://instagr(\.am|am\.com)/([^/]*)/p/([^/]*)#i', 'jetpack_instagram_alternate_format_handler' ); |
| 171 | function jetpack_instagram_alternate_format_handler( $matches, $atts, $url ) { |
| 172 | $url = esc_url_raw( 'https://instagram.com/p/' . $matches[4] ); |
| 173 | $matches[0] = $url; |
| 174 | $matches[3] = $matches[4]; |
| 175 | unset( $matches[4] ); |
| 176 | |
| 177 | return jetpack_instagram_handler( $matches, $atts, $url ); |
| 178 | } |
| 179 | |
| 180 | // [instagram url="http://instagram.com/p/PSbF9sEIGP/"] |
| 181 | // [instagram url="http://instagram.com/p/PSbF9sEIGP/" width="300"] |
| 182 | add_shortcode( 'instagram', 'jetpack_shortcode_instagram' ); |
| 183 | function jetpack_shortcode_instagram( $atts ) { |
| 184 | global $wp_embed; |
| 185 | |
| 186 | if ( empty( $atts['url'] ) ) { |
| 187 | return ''; |
| 188 | } |
| 189 | |
| 190 | return $wp_embed->shortcode( $atts, $atts['url'] ); |
| 191 | } |
| 192 |