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Editing: class.nominatim-geocode-cache.php
<?php namespace WPGMZA; if(!defined('ABSPATH')) return; /** * Used to facilitate communication and caching between the client and the Nominatim Geocoding service */ #[\AllowDynamicProperties] class NominatimGeocodeCache { /** * Constructor. */ public function __construct() { global $wpdb; $this->table = $wpdb->prefix . "wpgmza_nominatim_geocode_cache"; if(!$wpdb->get_var("SHOW TABLES LIKE '{$this->table}'")) { require_once(ABSPATH . '/wp-admin/includes/upgrade.php'); \dbDelta("CREATE TABLE {$this->table} ( id int(11) NOT NULL AUTO_INCREMENT, query VARCHAR(512), response TEXT, PRIMARY KEY (id) ) ENGINE=InnoDB DEFAULT CHARSET=utf8 AUTO_INCREMENT=1"); } } /** * Returns the cached result from the local geocode cache * @param string $query The address being queried * @return object|null The cached geocode result, or null where no result is found */ public function get($query) { global $wpdb; // Check the cache first, as per the nominatim usage policy $stmt = $wpdb->prepare("SELECT response FROM {$this->table} WHERE query=%s LIMIT 1", array($query)); /* Developer Hook (Filter) - Modify DB connction for nominatim query */ $stmt = apply_filters( 'wpgmza_ol_nomination_cache_query_get', $stmt, $query ); $string = $wpdb->get_var($stmt); $json = null; if(!empty($string)) $json = json_decode(stripslashes($string)); return $json; } /** * Caches the supplied response, from the supplied query * @param string $query The queried address * @param string $response The returned response to cache */ public function set($query, $response) { global $wpdb; $query = sanitize_text_field($query); if(empty($query)){ throw new \Exception("First argument cannot be empty"); } if(!empty($response)){ if(is_string($response)){ try{ $json = json_decode(stripslashes($response)); $response = $json; } catch(\Exception $ex){ $response = false; } catch(\Error $err){ $response = false; } } if(!empty($response)){ if(is_object($response)){ $response = array($response); } if(is_array($response)){ $response = $this->sanitizeDataRecursive($response); } else { throw new \Exception("Response data must be array of objects"); } } else { throw new \Exception("Malformed response data"); } } else { throw new \Exception("Response data cannot be empty"); } if(!empty($response) && is_array($response)){ $response = json_encode($response); /* Remove old cache results */ $wpdb->query($wpdb->prepare("DELETE FROM {$this->table} WHERE query = %s", array($query))); /* Store new cache result */ $stmt = $wpdb->prepare("INSERT INTO {$this->table} (query, response) VALUES (%s, %s)", array( $query, $response )); /* Developer Hook (Filter) - Modify nominatim cache store */ $stmt = apply_filters( 'wpgmza_ol_nomination_cache_query_set', $stmt, $query, $response ); $wpdb->query($stmt); } else { throw new \Exception("Malformed response data"); } } /** * Clears the cache */ public function clear() { global $wpdb; $stmt = $wpdb->query("TRUNCATE TABLE {$this->table}"); } /** * Queries the nominatim directly, as if it was a client side request * * This offloads the process from the client, adding security and reliability to the request * * Ideally this would be in some nominatim shared class, but this was a later addition to mitigate cache poisoning and * as such needs to exist here fro backwards compat, and long term reuse. * * We'll likely streamline this down the road into one geocoder system or something * * @param object $query * * @return array */ public function queryNominatimProxy($query){ if(!empty($query) && !empty($query->q)){ $args = array( 'q' => $query->q, 'format' => !empty($query->format) ? $query->format : 'json' ); if(!empty($query->countrycodes)){ $args['countrycodes'] = $query->countrycodes; } $endpoint = 'https://nominatim.openstreetmap.org/search'; $url = add_query_arg($args, $endpoint); $siteUrl = get_site_url(); $response = wp_remote_get($url, array( 'headers' => array( 'User-Agent' => 'WPGoMapsGeocoder (' . $siteUrl . ')', 'Referer' => $siteUrl ), 'timeout' => 10 ) ); if(!is_wp_error($response)){ try { $response = wp_remote_retrieve_body($response); $json = json_decode($response); if(!empty($json)){ return $json; } else { /* Check if the user has been blocked by OSM/Nominatim */ if(strpos($response, 'Access blocked') !== FALSE){ $notice = strip_tags($response); $notice = str_replace("Access blocked", "", $notice); return (object) array( 'error' => $notice ); } } } catch (\Exception $ex){ return false; } catch (\Error $err){ return false; } } } return false; } public function sanitizeDataRecursive($data){ if(!is_array($data) && !is_object($data)){ return sanitize_text_field($data); } foreach($data as $key => $value){ if(is_array($value) || is_object($value)){ $value = $this->sanitizeDataRecursive($value); } else if(is_float($value)){ $value = floatval($value); } else if(is_int($value)){ $value = intval($value); } else { $value = sanitize_text_field($value); } if(is_object($data)){ $data->{$key} = $value; } else if(is_array($data)){ $data[$key] = $value; } } return $data; } } /** * Bind function to query Nominatim cache. * @deprecated This will be moved to the REST API in the future */ function query_nominatim_cache() { return; // $cache = new NominatimGeocodeCache(); // $record = $cache->get(sanitize_text_field($_GET['query'])); // if(!$record) // $record = array(); // wp_send_json($record); // exit; } /** * Bind function to store a response on the Nominatim cache. * @deprecated This will be moved to the REST API in the future */ function store_nominatim_cache() { return; // $cache = new NominatimGeocodeCache(); // try{ // $cache->set(sanitize_text_field($_POST['query']), $_POST['response']); // wp_send_json(array( // 'success' => 1 // )); // } catch (\Exception $ex){ // wp_send_json(array( // 'success' => 0, // 'message' => $ex->getMessage() // )); // } catch (\Error $err){ // wp_send_json(array( // 'success' => 0, // 'message' => $err->getMessage() // )); // } // exit; } /** * Bind function to clear the Nominatim cache. * @deprecated This will be moved to the REST API in the future */ function clear_nominatim_cache() { global $wpgmza; if(!$wpgmza->isUserAllowedToEdit() || empty($_POST['wpgmza_security']) || !wp_verify_nonce($_POST['wpgmza_security'], 'wpgmza_ajaxnonce')){ http_response_code(401); return; } $cache = new NominatimGeocodeCache(); $cache->clear(); wp_send_json(array( 'success' => 1 )); exit; } /* Deprecated since 9.0.49 */ // add_action('wp_ajax_wpgmza_query_nominatim_cache', 'WPGMZA\\query_nominatim_cache'); // add_action('wp_ajax_nopriv_wpgmza_query_nominatim_cache', 'WPGMZA\\query_nominatim_cache'); // add_action('wp_ajax_wpgmza_store_nominatim_cache', 'WPGMZA\\store_nominatim_cache'); // add_action('wp_ajax_nopriv_wpgmza_store_nominatim_cache', 'WPGMZA\\store_nominatim_cache'); add_action('wp_ajax_wpgmza_clear_nominatim_cache', 'WPGMZA\\clear_nominatim_cache');
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