query = $opts->query; $this->mh = $mh; // Must be in this order :-/ $this->opts = $opts; $this->url = $this->get_request_url(); // No search engine url if(!$this->url) return; // Skip if there is a cached result (from earlier search) if($this->opts->cache == "on" && has_cached_results($this->url, $this->opts->hash)) return; // Curl $this->ch = curl_init(); curl_setopt($this->ch, CURLOPT_URL, $this->url); curl_setopt($this->ch, CURLOPT_HTTPGET, 1); // Redundant? Probably... curl_setopt($this->ch, CURLOPT_SSL_VERIFYPEER, false); curl_setopt($this->ch, CURLOPT_VERBOSE, false); curl_setopt($this->ch, CURLOPT_RETURNTRANSFER, true); curl_setopt($this->ch, CURLOPT_USERAGENT, $this->opts->user_agents[array_rand($this->opts->user_agents)]); curl_setopt($this->ch, CURLOPT_HTTPHEADER, array( 'Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8', 'Accept-Language: en-US,en;q=0.5', 'Upgrade-Insecure-Requests: 1' )); curl_setopt($this->ch, CURLOPT_ENCODING, "gzip,deflate"); curl_setopt($this->ch, CURLOPT_IPRESOLVE, CURL_IPRESOLVE_WHATEVER); curl_setopt($this->ch, CURLOPT_PROTOCOLS, CURLPROTO_HTTPS | CURLPROTO_HTTP); curl_setopt($this->ch, CURLOPT_REDIR_PROTOCOLS, CURLPROTO_HTTPS | CURLPROTO_HTTP); curl_setopt($this->ch, CURLOPT_MAXREDIRS, 5); curl_setopt($this->ch, CURLOPT_TIMEOUT, 3); curl_setopt($this->ch, CURLOPT_FOLLOWLOCATION, true); if($mh) curl_multi_add_handle($mh, $this->ch); } /*-------------------------------------- // Get search engine url --------------------------------------*/ public function get_request_url() { return ""; } /*-------------------------------------- // Check if a request to a search engine was successful --------------------------------------*/ public function request_successful() { if((isset($this->ch) && curl_getinfo($this->ch)['http_code'] == '200') || has_cached_results($this->url, $this->opts->hash)) { $return = "ok"; } else { $return = "Error code ".curl_getinfo($this->ch)['http_code']." for ".curl_getinfo($this->ch)['url'].". ch)['url']."\" target=\"_blank\">Go there now."; } return $return; } abstract function parse_results($response); /*-------------------------------------- // Load search results --------------------------------------*/ public function get_results() { if(!isset($this->url)) return $this->parse_results(null); // Skip if there is a cached result (from earlier search) if($this->opts->cache == "on" && has_cached_results($this->url, $this->opts->hash)) return fetch_cached_results($this->url, $this->opts->hash); if(!isset($this->ch)) return $this->parse_results(null); $response = ($this->mh) ? curl_multi_getcontent($this->ch) : curl_exec($this->ch); $results = $this->parse_results($response) ?? array(); // Cache last request if($this->opts->cache == "on" && !empty($results)) store_cached_results($this->url, $this->opts->hash, $results, ($this->opts->cache_time * 60)); return $results; } public static function print_results($results, $opts) {} } /*-------------------------------------- // Load and make config available, pass around variables --------------------------------------*/ function load_opts() { $opts = require "config.php"; $opts->query = (isset($_REQUEST['q'])) ? sanitize($_REQUEST["q"]) : ""; $opts->type = (isset($_REQUEST['t'])) ? sanitize($_REQUEST["t"]) : 0; $opts->user_auth = (isset($_REQUEST['a'])) ? sanitize($_REQUEST["a"]) : ""; // Remove ! at the start of queries to prevent DDG Bangs (!g, !c and crap like that) $has_exclamation_mark = substr($opts->query, 0, 1); if($has_exclamation_mark == "!") $opts->query = ltrim($opts->query, "!"); return $opts; } /*-------------------------------------- // Try to get some search results --------------------------------------*/ function fetch_search_results($opts) { $start_time = microtime(true); // Curl $mh = curl_multi_init(); // Load search script if($opts->type == 0 || $opts->type == 1) { require "engines/search.php"; $search = new TextSearch($opts, $mh); } else if($opts->type == 2) { require "engines/search-image.php"; $search = new ImageSearch($opts, $mh); } else if($opts->type == 9) { require "engines/search-torrent.php"; $search = new TorrentSearch($opts, $mh); } $running = null; do { curl_multi_exec($mh, $running); } while ($running); $results = $search->get_results(); curl_multi_close($mh); // Add elapsed time to results $results['time'] = number_format(microtime(true) - $start_time, 5, '.', ''); $search->print_results($results, $opts); return $results; } /*-------------------------------------- // Process special searches --------------------------------------*/ function special_search_request($opts) { $special_request = null; $query_terms = explode(" ", $opts->query); // Currency converter if($opts->special['currency'] == "on" && is_numeric($query_terms[0]) && ($query_terms[2] == 'to' || $query_terms[2] == 'in')) { require "engines/special/currency.php"; $special_request = new CurrencyRequest($opts, null); } // Dictionary if($opts->special['definition'] == "on" && count($query_terms) == 2 && ($query_terms[0] == 'define' || $query_terms[0] == 'd' || $query_terms[0] == 'mean' || $query_terms[0] == 'meaning')) { require "engines/special/definition.php"; $special_request = new DefinitionRequest($opts, null); } // Wikipedia search if($opts->special['wikipedia'] == "on" && count($query_terms) >= 2 && ($query_terms[0] == 'wiki' || $query_terms[0] == 'w')) { require "engines/special/wikipedia.php"; $special_request = new WikipediaRequest($opts, null); } // php.net search if($opts->special['phpnet'] == "on" && count($query_terms) == 2 && $query_terms[0] == 'php') { require "engines/special/php.php"; $special_request = new PHPnetRequest($opts, null); } return $special_request; } ?>