add extended syntax filter to prevent sphinxql query error #9

library/filter.php

@@ -55,6 +55,15 @@ class Filter {
     return $data;
   }
 
+  static public function sphinxSearchQuery(string $query) {
+
+    $query = str_replace(['\\', '/', '~', '@', '!'], ['\\\'', '\/', '\~', '\@', '\!'], $query);
+
+    $query = trim($query);
+
+    return $query;
+  }
+
   static public function plural(int $number, array $texts) {
 
     $cases = array (2, 0, 1, 1, 1, 2);

public/api.php

@@ -34,8 +34,8 @@ if (API_ENABLED) {
         $page  = !empty($_GET['page']) ? Filter::url($_GET['page']) : 1;
 
         // Make search request
-        $sphinxResultsTotal = $sphinx->searchHostPagesTotal($query);
-        $sphinxResults      = $sphinx->searchHostPages($query, $page * API_SEARCH_PAGINATION_RESULTS_LIMIT - API_SEARCH_PAGINATION_RESULTS_LIMIT, API_SEARCH_PAGINATION_RESULTS_LIMIT, $sphinxResultsTotal);
+        $sphinxResultsTotal = $sphinx->searchHostPagesTotal(Filter::sphinxSearchQuery($query));
+        $sphinxResults      = $sphinx->searchHostPages(Filter::sphinxSearchQuery($query), $page * API_SEARCH_PAGINATION_RESULTS_LIMIT - API_SEARCH_PAGINATION_RESULTS_LIMIT, API_SEARCH_PAGINATION_RESULTS_LIMIT, $sphinxResultsTotal);
 
         // Generate results
         $dbResults = [];

public/search.php

@@ -106,8 +106,8 @@ if (filter_var($q, FILTER_VALIDATE_URL) && preg_match(CRAWL_URL_REGEXP, $q)) {
 // Search request
 if (!empty($q)) {
 
-  $resultsTotal = $sphinx->searchHostPagesTotal($q);
-  $results      = $sphinx->searchHostPages($q, $p * WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT - WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, $resultsTotal);
+  $resultsTotal = $sphinx->searchHostPagesTotal(Filter::sphinxSearchQuery($q));
+  $results      = $sphinx->searchHostPages(Filter::sphinxSearchQuery($q), $p * WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT - WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, WEBSITE_PAGINATION_SEARCH_RESULTS_LIMIT, $resultsTotal);
 
 } else {