{ $remote_url_response = $this->get_remote_url( $url ); // Exit if we don't have a valid body or it's empty. if ( is_wp_error( $remote_url_response ) || empty( $remote_url_response ) ) { return $remote_url_response; } // Cache the valid response. $this->set_cache( $cache_key, $remote_url_response ); } $html_head = $this->get_document_head( $remote_url_response ); $meta_elements = $this->get_meta_with_content_elements( $html_head ); $data = $this->add_additional_fields_to_object( array( 'title' => $this->get_title( $html_head ), 'icon' => $this->get_icon( $html_head, $url ), 'description' => $this->get_description( $meta_elements ), 'image' => $this->get_image( $meta_elements, $url ), ), $request ); // Wrap the data in a response object. $response = rest_ensure_response( $data ); /** * Filters the URL data for the response. * * @since 5.9.0 * * @param WP_REST_Response $response The response object. * @param string $url The requested URL. * @param WP_REST_Request $request Request object. * @param string $remote_url_response HTTP response body from the remote URL. */ return apply_filters( 'rest_prepare_url_details', $response, $url, $request, $remote_url_response ); } /** * Checks whether a given request has permission to read remote URLs. * * @since 5.9.0 * * @return true|WP_Error True if the request has permission, else WP_Error. */ public function permissions_check() { if ( current_user_can( 'edit_posts' ) ) { return true; } foreach ( get_post_types( array( 'show_in_rest' => true ), 'objects' ) as $post_type ) { if ( current_user_can( $post_type->cap->edit_posts ) ) { return true; } } return new WP_Error( 'rest_cannot_view_url_details', __( 'Sorry, you are not allowed to process remote URLs.' ), array( 'status' => rest_authorization_required_code() ) ); } /** * Retrieves the document title from a remote URL. * * @since 5.9.0 * * @param string $url The website URL whose HTML to access. * @return string|WP_Error The HTTP response from the remote URL on success. * WP_Error if no response or no content. */ private function get_remote_url( $url ) { /* * Provide a modified UA string to workaround web properties which block WordPress "Pingbacks". * Why? The UA string used for pingback requests contains `WordPress/` which is very similar * to that used as the default UA string by the WP HTTP API. Therefore requests from this * REST endpoint are being unintentionally blocked as they are misidentified as pingback requests. * By slightly modifying the UA string, but still retaining the "WordPress" identification (via "WP") * we are able to work around this issue. * Example UA string: `WP-URLDetails/5.9-alpha-51389 (+http://localhost:8888)`. */ $modified_user_agent = 'WP-URLDetails/' . get_bloginfo( 'version' ) . ' (+' . get_bloginfo( 'url' ) . ')'; $args = array( 'limit_response_size' => 150 * KB_IN_BYTES, 'user-agent' => $modified_user_agent, ); /** * Filters the HTTP request args for URL data retrieval. * * Can be used to adjust response size limit and other WP_Http::request() args. * * @since 5.9.0 * * @param array $args Arguments used for the HTTP request. * @param string $url The attempted URL. */ $args = apply_filters( 'rest_url_details_http_request_args', $args, $url ); $response = wp_safe_remote_get( $url, $args ); if ( WP_Http::OK !== wp_remote_retrieve_response_code( $response ) ) { // Not saving the error response to cache since the error might be temporary. return new WP_Error( 'no_response', __( 'URL not found. Response returned a non-200 status code for this URL.' ), array( 'status' => WP_Http::NOT_FOUND ) ); } $remote_body = wp_remote_retrieve_body( $response ); if ( empty( $remote_body ) ) { return new WP_Error( 'no_content', __( 'Unable to retrieve body from response at this URL.' ), array( 'status' => WP_Http::NOT_FOUND ) ); } return $remote_body; } /** * Parses the title tag contents from the provided HTML. * * @since 5.9.0 * * @param string $html The HTML from the remote website at URL. * @return string The title tag contents on success. Empty string if not found. */ private function get_title( $html ) { $pattern = '#]*>(.*?)<\s*/\s*title>#is'; preg_match( $pattern, $html, $match_title ); if ( empty( $match_title[1] ) || ! is_string( $match_title[1] ) ) { return ''; } $title = trim( $match_title[1] ); return $this->prepare_metadata_for_output( $title ); } /** * Parses the site icon from the provided HTML. * * @since 5.9.0 * * @param string $html The HTML from the remote website at URL. * @param string $url The target website URL. * @return string The icon URI on success. Empty string if not found. */ private function get_icon( $html, $url ) { // Grab the icon's link element. $pattern = '#]*rel=(?:[\"\']??)\s*(?:icon|shortcut icon|icon shortcut)\s*(?:[\"\']??)[^>]*\/?>#isU'; preg_match( $pattern, $html, $element ); if ( empty( $element[0] ) || ! is_string( $element[0] ) ) { return ''; } $element = trim( $element[0] ); // Get the icon's href value. $pattern = '#href=([\"\']??)([^\" >]*?)\\1[^>]*#isU'; preg_match( $pattern, $element, $icon ); if ( empty( $icon[2] ) || ! is_string( $icon[2] ) ) { return ''; } $icon = trim( $icon[2] ); // If the icon is a data URL, return it. $parsed_icon = parse_url( $icon ); if ( isset( $parsed_icon['scheme'] ) && 'data' === $parsed_icon['scheme'] ) { return $icon; } // Attempt to convert relative URLs to absolute. if ( ! is_string( $url ) || '' === $url ) { return $icon; } $parsed_url = parse_url( $url ); if ( isset( $parsed_url['scheme'] ) && isset( $parsed_url['host'] ) ) { $root_url = $parsed_url['scheme'] . '://' . $parsed_url['host'] . '/'; $icon = WP_Http::make_absolute_url( $icon, $root_url ); } return $icon; } /** * Parses the meta description from the provided HTML. * * @since 5.9.0 * * @param array $meta_elements { * A multidimensional indexed array on success, else empty array. * * @type string[] $0 Meta elements with a content attribute. * @type string[] $1 Content attribute's opening quotation mark. * @type string[] $2 Content attribute's value for each meta element. * } * @return string The meta description contents on success. Empty string if not found. */ private function get_description( $meta_elements ) { // Bail out if there are no meta elements. if ( empty( $meta_elements[0] ) ) { return ''; } $description = $this->get_metadata_from_meta_element( $meta_elements, 'name', '(?:description|og:description)' ); // Bail out if description not found. if ( '' === $description ) { return ''; } return $this->prepare_metadata_for_output( $description ); } /** * Parses the Open Graph (OG) Image from the provided HTML. * * See: https://ogp.me/. * * @since 5.9.0 * * @param array $meta_elements { * A multidimensional indexed array on success, else empty array. * * @type string[] $0 Meta elements with a content attribute. * @type string[] $1 Content attribute's opening quotation mark. * @type string[] $2 Content attribute's value for each meta element. * } * @param string $url The target website URL. * @return string The OG image on success. Empty string if not found. */ private function get_image( $meta_elements, $url ) { $image = $this->get_metadata_from_meta_element( $meta_elements, 'property', '(?:og:image|og:image:url)' ); // Bail out if image not found. if ( '' === $image ) { return ''; } // Attempt to convert relative URLs to absolute. $parsed_url = parse_url( $url ); if ( isset( $parsed_url['scheme'] ) && isset( $parsed_url['host'] ) ) { $root_url = $parsed_url['scheme'] . '://' . $parsed_url['host'] . '/'; $image = WP_Http::make_absolute_url( $image, $root_url ); } return $image; } /** * Prepares the metadata by: * - stripping all HTML tags and tag entities. * - converting non-tag entities into characters. * * @since 5.9.0 * * @param string $metadata The metadata content to prepare. * @return string The prepared metadata. */ private function prepare_metadata_for_output( $metadata ) { $metadata = html_entity_decode( $metadata, ENT_QUOTES, get_bloginfo( 'charset' ) ); $metadata = wp_strip_all_tags( $metadata ); return $metadata; } /** * Utility function to build cache key for a given URL. * * @since 5.9.0 * * @param string $url The URL for which to build a cache key. * @return string The cache key. */ private function build_cache_key_for_url( $url ) { return 'g_url_details_response_' . md5( $url ); } /** * Utility function to retrieve a value from the cache at a given key. * * @since 5.9.0 * * @param string $key The cache key. * @return mixed The value from the cache. */ private function get_cache( $key ) { return get_site_transient( $key ); } /** * Utility function to cache a given data set at a given cache key. * * @since 5.9.0 * * @param string $key The cache key under which to store the value. * @param string $data The data to be stored at the given cache key. * @return bool True when transient set. False if not set. */ private function set_cache( $key, $data = '' ) { $ttl = HOUR_IN_SECONDS; /** * Filters the cache expiration. * * Can be used to adjust the time until expiration in seconds for the cache * of the data retrieved for the given URL. * * @since 5.9.0 * * @param int $ttl The time until cache expiration in seconds. */ $cache_expiration = apply_filters( 'rest_url_details_cache_expiration', $ttl ); return set_site_transient( $key, $data, $cache_expiration ); } /** * Retrieves the head element section. * * @since 5.9.0 * * @param string $html The string of HTML to parse. * @return string The `..` section on success. Given `$html` if not found. */ private function get_document_head( $html ) { $head_html = $html; // Find the opening `` tag. $head_start = strpos( $html, '` tag. $head_end = strpos( $head_html, '' ); if ( false === $head_end ) { // Didn't find it. Find the opening `` tag. $head_end = strpos( $head_html, ' symbol. * * The content attribute's value (i.e. the description to get) can have HTML in it and be well-formed as * it's a string to the browser. Imagine what happens when attempting to match for the name=description * first. Hmm, if a > or /> symbol is in the content attribute's value, then it terminates the match * as the element's closing symbol. But wait, it's in the content attribute and is not the end of the * element. This is a limitation of using regex. It can't determine "wait a minute this is inside of quotation". * If this happens, what gets matched is not the entire element or all of the content. * * Why not search for the name=description and then content="(.*)"? * The attribute order could be opposite. Plus, additional attributes may exist including being between * the name and content attributes. * * Why not lookahead? * Lookahead is not constrained to stay within the element. The first symbol. */ '[^>]*' . /* * Find the content attribute. When found, capture its value (.*). * * Allows for (a) single or double quotes and (b) whitespace in the value. * * Why capture the opening quotation mark, i.e. (["\']), and then backreference, * i.e \1, for the closing quotation mark? * To ensure the closing quotation mark matches the opening one. Why? Attribute values * can contain quotation marks, such as an apostrophe in the content. */ 'content=(["\']??)(.*)\1' . /* * Allows for additional attributes after the content attribute. * Searches for anything other than > symbol. */ '[^>]*' . /* * \/?> searches for the closing > symbol, which can be in either /> or > format. * # ends the pattern. */ '\/?>#' . /* * These are the options: * - i : case-insensitive * - s : allows newline characters for the . match (needed for multiline elements) * - U means non-greedy matching */ 'isU'; preg_match_all( $pattern, $html, $elements ); return $elements; } /** * Gets the metadata from a target meta element. * * @since 5.9.0 * * @param array $meta_elements { * A multi-dimensional indexed array on success, else empty array. * * @type string[] $0 Meta elements with a content attribute. * @type string[] $1 Content attribute's opening quotation mark. * @type string[] $2 Content attribute's value for each meta element. * } * @param string $attr Attribute that identifies the element with the target metadata. * @param string $attr_value The attribute's value that identifies the element with the target metadata. * @return string The metadata on success. Empty string if not found. */ private function get_metadata_from_meta_element( $meta_elements, $attr, $attr_value ) { // Bail out if there are no meta elements. if ( empty( $meta_elements[0] ) ) { return ''; } $metadata = ''; $pattern = '#' . /* * Target this attribute and value to find the metadata element. * * Allows for (a) no, single, double quotes and (b) whitespace in the value. * * Why capture the opening quotation mark, i.e. (["\']), and then backreference, * i.e \1, for the closing quotation mark? * To ensure the closing quotation mark matches the opening one. Why? Attribute values * can contain quotation marks, such as an apostrophe in the content. */ $attr . '=([\"\']??)\s*' . $attr_value . '\s*\1' . /* * These are the options: * - i : case-insensitive * - s : allows newline characters for the . match (needed for multiline elements) * - U means non-greedy matching */ '#isU'; // Find the metadata element. foreach ( $meta_elements[0] as $index => $element ) { preg_match( $pattern, $element, $match ); // This is not the metadata element. Skip it. if ( empty( $match ) ) { continue; } /* * Found the metadata element. * Get the metadata from its matching content array. */ if ( isset( $meta_elements[2][ $index ] ) && is_string( $meta_elements[2][ $index ] ) ) { $metadata = trim( $meta_elements[2][ $index ] ); } break; } return $metadata; } } To ensure the security of Bali for the IMF-World Bank, terrorists will be terrorized in place by Police – CIDISS
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To ensure the security of Bali for the IMF-World Bank, terrorists will be terrorized in place by Police

By cidiss 28
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CIDISS. Ahead of the upcoming Annual Meeting of the International Monetary Fund and World Bank (IMF) in October 2018, the Bali Regional Police continue to tighten regional surveillance to prevent the entry of terrorism on the Island of the Gods.

Head of Bali Police Public Relations Division Kombes Pol. Henky Widjaja said that terrorist surveillance and prevention continues to be carried out by the Task Force owned by the Bali Regional Police which until now has continued to move, and also supported by a number of anti-terrorism Detachment 88 members in Bali.

Henky said Bali Police Chief Inspector General Pol. Petrus R. Golose has also ordered all of its members to act decisively if they find terrorists in Bali with, if possible, take a shot on the spot.

He said, Mr Kapolda (Bali Police Chief Inspector General Pol. Petrus R. Golose) asked his members not to hesitate to take firm and measurable measures against terrorists.

Henky also said that until now the police continue to monitor the possibility of terrorist movements that exist throughout Indonesia, not only in Bali. For now Bali is still safe, because it often inflames anti-thuggery and anti-terrorism.

The police also routinely conduct partial simulations or simulate the regulation of traffic flow, the Brimob function as in the safeguards ahead of the IMF-World Bank later.

For safeguarding IMF-World Bank delegates, Henky continued, security officers and liaison officers were prepared. He said that the IMF-World Bank’s safeguards (meeting) were also assisted by police personnel from the National Police Headquarters and East Java Regional Police, because the activities were very large and he was sure to be safe.

As the host, Indonesia must provide the best so that the world-scale activities run smoothly and safely. However, it cannot be separated from the role of the community, for example by providing information to the local authorities if there are suspicious people, thus avoiding bomb terrorism during activities.

By: Reza Setiawan *)

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