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334 lines
| 1 | <?php |
| 2 | /** |
| 3 | * Instagram Embeds. |
| 4 | * |
| 5 | * Full links: https://www.instagram.com/p/BnMOk_FFsxg/ |
| 6 | * https://www.instagram.com/tv/BkQjCfsBIzi/ |
| 7 | * [instagram url=https://www.instagram.com/p/BnMOk_FFsxg/] |
| 8 | * [instagram url=https://www.instagram.com/p/BZoonmAHvHf/ width=320] |
| 9 | * Embeds can be converted to a shortcode when the author does not have unfiltered_html caps: |
| 10 | * <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> |
| 11 | * <script async defer src="https://platform.instagram.com/en_US/embeds.js"></script> |
| 12 | * |
| 13 | * @package automattic/jetpack |
| 14 | */ |
| 15 | |
| 16 | use Automattic\Jetpack\Connection\Client; |
| 17 | use Automattic\Jetpack\Constants; |
| 18 | use Automattic\Jetpack\Status; |
| 19 | |
| 20 | if ( defined( 'IS_WPCOM' ) && IS_WPCOM ) { |
| 21 | add_action( 'init', 'jetpack_instagram_enable_embeds' ); |
| 22 | } else { |
| 23 | jetpack_instagram_enable_embeds(); |
| 24 | } |
| 25 | |
| 26 | /** |
| 27 | * Register Instagram as oembed provider, and add required filters for the API request. |
| 28 | * Add filter to reverse iframes to shortcode. Register [instagram] shortcode. |
| 29 | * |
| 30 | * @since 9.1.0 |
| 31 | */ |
| 32 | function jetpack_instagram_enable_embeds() { |
| 33 | wp_oembed_add_provider( |
| 34 | '#https?://(www\.)?instagr(\.am|am\.com)/(p|tv|reel)/.*#i', |
| 35 | 'https://graph.facebook.com/v5.0/instagram_oembed/', |
| 36 | true |
| 37 | ); |
| 38 | |
| 39 | /** |
| 40 | * Handle an alternate Instagram URL format, where the username is also part of the URL. |
| 41 | */ |
| 42 | wp_oembed_add_provider( |
| 43 | '#https?://(?:www\.)?instagr(?:\.am|am\.com)/(?:[^/]*)/(p|tv|reel)/([^\/]*)#i', |
| 44 | 'https://graph.facebook.com/v5.0/instagram_oembed/', |
| 45 | true |
| 46 | ); |
| 47 | |
| 48 | /** |
| 49 | * Add auth token required by Instagram's oEmbed REST API, or proxy through WP.com. |
| 50 | */ |
| 51 | add_filter( 'oembed_fetch_url', 'jetpack_instagram_oembed_fetch_url', 10, 3 ); |
| 52 | |
| 53 | /** |
| 54 | * Add JP auth headers if we're proxying through WP.com. |
| 55 | */ |
| 56 | add_filter( 'oembed_remote_get_args', 'jetpack_instagram_oembed_remote_get_args', 10, 2 ); |
| 57 | |
| 58 | /** |
| 59 | * Embed reversal: Convert an embed code from Instagram.com to an oEmbeddable URL. |
| 60 | */ |
| 61 | add_filter( 'pre_kses', 'jetpack_instagram_embed_reversal' ); |
| 62 | |
| 63 | /** |
| 64 | * Add the shortcode. |
| 65 | */ |
| 66 | add_shortcode( 'instagram', 'jetpack_shortcode_instagram' ); |
| 67 | } |
| 68 | |
| 69 | /** |
| 70 | * Embed Reversal for Instagram |
| 71 | * |
| 72 | * Hooked to pre_kses, converts an embed code from Instagram.com to an oEmbeddable URL. |
| 73 | * |
| 74 | * @param string $content Post content. |
| 75 | * |
| 76 | * @return string The filtered or the original content. |
| 77 | **/ |
| 78 | function jetpack_instagram_embed_reversal( $content ) { |
| 79 | if ( ! is_string( $content ) || false === stripos( $content, 'instagram.com' ) ) { |
| 80 | return $content; |
| 81 | } |
| 82 | |
| 83 | /* |
| 84 | * Sample embed code: |
| 85 | * <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> |
| 86 | * <script async defer src="https://platform.instagram.com/en_US/embeds.js"></script> |
| 87 | */ |
| 88 | |
| 89 | $regexes = array(); |
| 90 | |
| 91 | // new style js. |
| 92 | $regexes[] = '#<blockquote[^>]+?class="instagram-media"[^>].+?>(.+?)</blockquote><script[^>]+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"></script>#ix'; |
| 93 | |
| 94 | // Let's play nice with the visual editor too. |
| 95 | $regexes[] = '#<blockquote(?:[^&]|&(?!gt;))+?class="instagram-media"(?:[^&]|&(?!gt;)).+?>(.+?)</blockquote><script(?:[^&]|&(?!gt;))+?src="(https?:)?//platform\.instagram\.com/(.+?)/embeds\.js"(?:[^&]|&(?!gt;))*+></script>#ix'; |
| 96 | |
| 97 | // old style iframe. |
| 98 | $regexes[] = '#<iframe[^>]+?src="((?:https?:)?//(?:www\.)?instagram\.com/p/([^"\'/]++)[^"\']*?)"[^>]*+>\s*?</iframe>#i'; |
| 99 | |
| 100 | // Let's play nice with the visual editor too. |
| 101 | $regexes[] = '#<iframe(?:[^&]|&(?!gt;))+?src="((?:https?:)?//(?:www\.)instagram\.com/p/([^"\'/]++)[^"\']*?)"(?:[^&]|&(?!gt;))*+>\s*?</iframe>#i'; |
| 102 | |
| 103 | foreach ( $regexes as $regex ) { |
| 104 | if ( ! preg_match_all( $regex, $content, $matches, PREG_SET_ORDER ) ) { |
| 105 | continue; |
| 106 | } |
| 107 | |
| 108 | foreach ( $matches as $match ) { |
| 109 | if ( ! preg_match( '#(https?:)?//(?:www\.)?instagr(\.am|am\.com)/p/([^/]*)#i', $match[1], $url_matches ) ) { |
| 110 | continue; |
| 111 | } |
| 112 | |
| 113 | // Since we support Instagram via oEmbed, we simply leave a link on a line by itself. |
| 114 | $replace_regex = sprintf( '#\s*%s\s*#', preg_quote( $match[0], '#' ) ); |
| 115 | $url = esc_url( $url_matches[0] ); |
| 116 | |
| 117 | $content = preg_replace( $replace_regex, sprintf( "\n\n%s\n\n", $url ), $content ); |
| 118 | /** This action is documented in modules/shortcodes/youtube.php */ |
| 119 | do_action( 'jetpack_embed_to_shortcode', 'instagram', $url ); |
| 120 | } |
| 121 | } |
| 122 | |
| 123 | return $content; |
| 124 | } |
| 125 | |
| 126 | /** |
| 127 | * List of allowed and sanitized parameters |
| 128 | * that can be used with the Instagram oEmbed endpoint. |
| 129 | * |
| 130 | * Those parameters can be provided via the Instagram URL, or via shortcode parameters. |
| 131 | * |
| 132 | * @see https://developers.facebook.com/docs/graph-api/reference/instagram-oembed#parameters |
| 133 | * |
| 134 | * @since 9.1.0 |
| 135 | * |
| 136 | * @param string $url URL of the content to be embedded. |
| 137 | * @param array $atts Shortcode attributes. |
| 138 | * |
| 139 | * @return array $params Array of parameters to be used in Instagram query. |
| 140 | */ |
| 141 | function jetpack_instagram_get_allowed_parameters( $url, $atts = array() ) { |
| 142 | global $content_width; |
| 143 | |
| 144 | // Any URL passed via a shortcode attribute takes precedence. |
| 145 | if ( ! empty( $atts['url'] ) ) { |
| 146 | $url = $atts['url']; |
| 147 | unset( $atts['url'] ); |
| 148 | } |
| 149 | |
| 150 | /* |
| 151 | * Get URL and parameters from the URL if possible. |
| 152 | * |
| 153 | * We'll also clean any other query params from the URL since Facebook's new API for Instagram |
| 154 | * embeds does not like query parameters. See p7H4VZ-2DU-p2. |
| 155 | */ |
| 156 | $parsed_url = wp_parse_url( $url ); |
| 157 | if ( $parsed_url && isset( $parsed_url['host'] ) && isset( $parsed_url['path'] ) ) { |
| 158 | // Bail early if this is not an Instagram URL. |
| 159 | if ( ! preg_match( '/(?:^|\.)instagr(?:\.am|am\.com)$/', $parsed_url['host'] ) ) { |
| 160 | return array(); |
| 161 | } |
| 162 | |
| 163 | $url = 'https://www.instagram.com' . $parsed_url['path']; |
| 164 | |
| 165 | // If we have any parameters as part of the URL, we merge them with our attributes. |
| 166 | if ( ! empty( $parsed_url['query'] ) ) { |
| 167 | $query_args = array(); |
| 168 | wp_parse_str( $parsed_url['query'], $query_args ); |
| 169 | |
| 170 | $atts = array_merge( $atts, $query_args ); |
| 171 | } |
| 172 | } else { |
| 173 | return array(); |
| 174 | } |
| 175 | |
| 176 | $max_width = 698; |
| 177 | $min_width = 320; |
| 178 | |
| 179 | $params = shortcode_atts( |
| 180 | array( |
| 181 | 'url' => $url, |
| 182 | 'width' => ( is_numeric( $content_width ) && $content_width > 0 ) ? $content_width : $max_width, |
| 183 | 'height' => '', |
| 184 | 'hidecaption' => false, |
| 185 | ), |
| 186 | $atts, |
| 187 | 'instagram' |
| 188 | ); |
| 189 | |
| 190 | // Ensure width is within bounds. |
| 191 | $params['width'] = absint( $params['width'] ); |
| 192 | if ( $params['width'] > $max_width ) { |
| 193 | $params['width'] = $max_width; |
| 194 | } elseif ( $params['width'] < $min_width ) { |
| 195 | $params['width'] = $min_width; |
| 196 | } |
| 197 | |
| 198 | return $params; |
| 199 | } |
| 200 | |
| 201 | /** |
| 202 | * Add auth token required by Instagram's oEmbed REST API, or proxy through WP.com. |
| 203 | * |
| 204 | * @since 9.1.0 |
| 205 | * |
| 206 | * @param string $provider URL of the oEmbed provider. |
| 207 | * @param string $url URL of the content to be embedded. |
| 208 | * @param array $args Additional arguments for retrieving embed HTML. |
| 209 | * |
| 210 | * @return string |
| 211 | */ |
| 212 | function jetpack_instagram_oembed_fetch_url( $provider, $url, $args ) { |
| 213 | if ( ! wp_startswith( $provider, 'https://graph.facebook.com/v5.0/instagram_oembed/' ) ) { |
| 214 | return $provider; |
| 215 | } |
| 216 | |
| 217 | // Get a set of URL and parameters supported by Facebook. |
| 218 | $clean_parameters = jetpack_instagram_get_allowed_parameters( $url, $args ); |
| 219 | |
| 220 | // Replace existing URL by our clean version. |
| 221 | if ( ! empty( $clean_parameters['url'] ) ) { |
| 222 | $provider = add_query_arg( 'url', rawurlencode( $clean_parameters['url'] ), $provider ); |
| 223 | } |
| 224 | |
| 225 | // Our shortcode supports the width param, but the API expects maxwidth. |
| 226 | if ( ! empty( $clean_parameters['width'] ) ) { |
| 227 | $provider = add_query_arg( 'maxwidth', $clean_parameters['width'], $provider ); |
| 228 | } |
| 229 | |
| 230 | if ( ! empty( $clean_parameters['hidecaption'] ) ) { |
| 231 | $provider = add_query_arg( 'hidecaption', true, $provider ); |
| 232 | } |
| 233 | |
| 234 | $access_token = jetpack_instagram_get_access_token(); |
| 235 | |
| 236 | if ( ! empty( $access_token ) ) { |
| 237 | return add_query_arg( 'access_token', $access_token, $provider ); |
| 238 | } |
| 239 | |
| 240 | // If we don't have an access token, we go through the WP.com proxy instead. |
| 241 | // To that end, we need to make sure that we're connected to WP.com. |
| 242 | if ( ! Jetpack::is_connection_ready() || ( new Status() )->is_offline_mode() ) { |
| 243 | return $provider; |
| 244 | } |
| 245 | |
| 246 | // @TODO Use Core's /oembed/1.0/proxy endpoint on WP.com |
| 247 | // (Currently not global but per-site, i.e. /oembed/1.0/sites/1234567/proxy) |
| 248 | // and deprecate /oembed-proxy/instagram endpoint. |
| 249 | $wpcom_oembed_proxy = Constants::get_constant( 'JETPACK__WPCOM_JSON_API_BASE' ) . '/wpcom/v2/oembed-proxy/instagram/'; |
| 250 | return str_replace( 'https://graph.facebook.com/v5.0/instagram_oembed/', $wpcom_oembed_proxy, $provider ); |
| 251 | } |
| 252 | |
| 253 | /** |
| 254 | * Add JP auth headers if we're proxying through WP.com. |
| 255 | * |
| 256 | * @param array $args oEmbed remote get arguments. |
| 257 | * @param string $url URL to be inspected. |
| 258 | */ |
| 259 | function jetpack_instagram_oembed_remote_get_args( $args, $url ) { |
| 260 | if ( ! wp_startswith( $url, Constants::get_constant( 'JETPACK__WPCOM_JSON_API_BASE' ) . '/wpcom/v2/oembed-proxy/instagram/' ) ) { |
| 261 | return $args; |
| 262 | } |
| 263 | |
| 264 | $method = 'GET'; |
| 265 | $signed_request = Client::build_signed_request( |
| 266 | compact( 'url', 'method' ) |
| 267 | ); |
| 268 | |
| 269 | return $signed_request['request']; |
| 270 | } |
| 271 | |
| 272 | /** |
| 273 | * Fetches a Facebook API access token used for query for Instagram embed information, if one is set. |
| 274 | * |
| 275 | * @return string The access token or '' |
| 276 | */ |
| 277 | function jetpack_instagram_get_access_token() { |
| 278 | /** |
| 279 | * Filters the Instagram embed token that is used for querying the Facebook API. |
| 280 | * |
| 281 | * When this token is set, requests are not proxied through the WordPress.com API. Instead, a request is made directly to the |
| 282 | * Facebook API to query for information about the embed which should provide a performance benefit. |
| 283 | * |
| 284 | * @module shortcodes |
| 285 | * |
| 286 | * @since 9.0.0 |
| 287 | * |
| 288 | * @param string string The access token set via the JETPACK_INSTAGRAM_EMBED_TOKEN constant. |
| 289 | */ |
| 290 | return (string) apply_filters( 'jetpack_instagram_embed_token', (string) Constants::get_constant( 'JETPACK_INSTAGRAM_EMBED_TOKEN' ) ); |
| 291 | } |
| 292 | |
| 293 | /** |
| 294 | * Display the Instagram shortcode. |
| 295 | * |
| 296 | * @param array $atts Shortcode attributes. |
| 297 | */ |
| 298 | function jetpack_shortcode_instagram( $atts ) { |
| 299 | global $wp_embed; |
| 300 | |
| 301 | if ( empty( $atts['url'] ) ) { |
| 302 | return ''; |
| 303 | } |
| 304 | |
| 305 | $atts = jetpack_instagram_get_allowed_parameters( $atts['url'], $atts ); |
| 306 | |
| 307 | if ( empty( $atts['url'] ) ) { |
| 308 | return ''; |
| 309 | } |
| 310 | |
| 311 | if ( class_exists( 'Jetpack_AMP_Support' ) && Jetpack_AMP_Support::is_amp_request() ) { |
| 312 | $url_pattern = '#http(s?)://(www\.)?instagr(\.am|am\.com)/p/([^/?]+)#i'; |
| 313 | preg_match( $url_pattern, $atts['url'], $matches ); |
| 314 | if ( ! $matches ) { |
| 315 | return sprintf( |
| 316 | '<a href="%1$s" class="amp-wp-embed-fallback">%1$s</a>', |
| 317 | esc_url( $atts['url'] ) |
| 318 | ); |
| 319 | } |
| 320 | |
| 321 | $shortcode_id = end( $matches ); |
| 322 | $width = ! empty( $atts['width'] ) ? $atts['width'] : 600; |
| 323 | $height = ! empty( $atts['height'] ) ? $atts['height'] : 600; |
| 324 | return sprintf( |
| 325 | '<amp-instagram data-shortcode="%1$s" layout="responsive" width="%2$d" height="%3$d" data-captioned></amp-instagram>', |
| 326 | esc_attr( $shortcode_id ), |
| 327 | absint( $width ), |
| 328 | absint( $height ) |
| 329 | ); |
| 330 | } |
| 331 | |
| 332 | return $wp_embed->shortcode( $atts, $atts['url'] ); |
| 333 | } |
| 334 |