Self-Host

To Self-host @ https://link.flossboxin.org.in

misc/search_engine.php

@@ -0,0 +1,191 @@
+<?php
+    require_once "misc/cooldowns.php";
+    abstract class EngineRequest {
+        protected $url, $query, $page, $opts, $mh, $ch;
+
+        protected $DO_CACHING = true;
+        public function __construct($opts, $mh) {
+            $this->query = $opts->query;
+            $this->page = $opts->page;
+            $this->mh = $mh;
+            $this->opts = $opts;
+
+            $this->url = $this->get_request_url();
+            if (!$this->url)
+                return;
+
+            if (has_cached_results($this->url))
+                return;
+
+            $this->ch = curl_init($this->url);
+
+            if ($opts->curl_settings)
+                curl_setopt_array($this->ch, $opts->curl_settings);
+
+            if ($mh)
+                curl_multi_add_handle($mh, $this->ch);
+        }
+
+        public function get_request_url() {
+            return "";
+        }
+
+        public function successful() {
+            return (isset($this->ch) && curl_getinfo($this->ch)['http_code'] == '200') 
+                || has_cached_results($this->url);
+        }
+
+        abstract function parse_results($response);
+
+        public function get_results() {
+            if (!isset($this->url))
+                return $this->parse_results(null);
+
+            if ($this->DO_CACHING && has_cached_results($this->url))
+                return fetch_cached_results($this->url);
+
+            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();
+
+            if ($this->DO_CACHING && !empty($results))
+                store_cached_results($this->url, $results, $this->opts->cache_time * 60);
+
+            return $results;
+        }
+
+        public static function print_results($results, $opts) {}
+    }
+
+    function load_opts() {
+        if (isset($GLOBALS["opts"]))
+            $opts = $GLOBALS["opts"];
+        else
+            $opts = require_once "config.php";
+
+        # account for the old, misspelled options
+        if (isset($opts->disable_bittorent_search))
+            $opts->disable_bittorrent_search = $opts->disable_bittorent_search;
+        
+        if (isset($opts->bittorent_trackers))
+            $opts->bittorrent_trackers = $opts->bittorent_trackers;
+
+        $opts->request_cooldown ??= 25;
+        $opts->cache_time ??= 25;
+
+        $opts->query = trim($_REQUEST["q"] ?? "");
+        $opts->type = (int) ($_REQUEST["t"] ?? 0);
+        $opts->page = (int) ($_REQUEST["p"] ?? 0);
+
+        $opts->theme = $_REQUEST["theme"] ?? trim(htmlspecialchars($_COOKIE["theme"] ?? $opts->default_theme ?? "dark"));
+
+        $opts->safe_search = (int) ($_REQUEST["safe"] ?? 0) == 1 || isset($_COOKIE["safe_search"]);
+
+        $opts->disable_special = (int) ($_REQUEST["ns"] ?? 0) == 1 || isset($_COOKIE["disable_special"]);
+
+        $opts->disable_frontends = (int) ($_REQUEST["nf"] ?? 0) == 1 || isset($_COOKIE["disable_frontends"]);
+
+        $opts->language = $_REQUEST["lang"] ?? trim(htmlspecialchars($_COOKIE["language"] ?? $opts->language ?? "en"));
+
+        $opts->do_fallback = (int) ($_REQUEST["nfb"] ?? 0) == 0;
+        if (!$opts->instance_fallback) {
+            $opts->do_fallback = false;
+        }
+
+        $opts->number_of_results ??= trim(htmlspecialchars($_COOKIE["number_of_results"]));
+
+        foreach (array_keys($opts->frontends ?? array()) as $frontend) {
+            $opts->frontends[$frontend]["instance_url"] = $_COOKIE[$frontend] ?? $opts->frontends[$frontend]["instance_url"];
+        }
+
+        $opts->curl_settings[CURLOPT_FOLLOWLOCATION] ??= true;
+
+        $opts->engine = $_REQUEST["engine"] ?? $_COOKIE["engine"] ?? $opts->preferred_engines["text"] ?? "auto";
+
+        return $opts;
+    }
+
+    function opts_to_params($opts) {
+        $query = urlencode($opts->query);
+
+        $params = "";
+        $params .= "p=$opts->page";
+        $params .= "&q=$query";
+        $params .= "&t=$opts->type";
+        $params .= "&safe=" . ($opts->safe_search ? 1 : 0);
+        $params .= "&nf=" . ($opts->disable_frontends ? 1 : 0);
+        $params .= "&ns=" . ($opts->disable_special ? 1 : 0);
+        $params .= "&engine=" . ($opts->engine ?? "auto");
+
+        return $params;
+    }
+
+    function init_search($opts, $mh) {
+        switch ($opts->type)
+        {
+            case 1:
+                require_once "engines/qwant/image.php";
+                return new QwantImageSearch($opts, $mh);
+
+            case 2:
+                require_once "engines/invidious/video.php";
+                return new VideoSearch($opts, $mh);
+
+            case 3:
+                if ($opts->disable_bittorrent_search) {
+                    echo "<p class=\"text-result-container\">" . TEXTS["feature_disabled"] . "</p>";
+                    break;
+                }
+
+                require_once "engines/bittorrent/merge.php";
+                return new TorrentSearch($opts, $mh);
+
+            case 4:
+                if ($opts->disable_hidden_service_search) {
+                    echo "<p class=\"text-result-container\">" . TEXTS["feature_disabled"] . "</p>";
+                    break;
+                }
+                require_once "engines/ahmia/hidden_service.php";
+                return new TorSearch($opts, $mh);
+
+            case 5:
+                require_once "engines/maps/openstreetmap.php";
+                return new OSMRequest($opts, $mh);
+
+            default:
+                require_once "engines/text/text.php";
+                return new TextSearch($opts, $mh);
+        }
+    }
+
+    function fetch_search_results($opts, $do_print) {
+        $opts->cooldowns = load_cooldowns();
+
+        $start_time = microtime(true);
+        $mh = curl_multi_init();
+        $search_category = init_search($opts, $mh);
+
+        $running = null;
+
+        do {
+            curl_multi_exec($mh, $running);
+        } while ($running);
+
+        $results = $search_category->get_results();
+
+        if (empty($results)) {
+            require_once "engines/librex/fallback.php";
+            $results = get_librex_results($opts);
+        }
+
+        if (!$do_print || empty($results))
+            return $results;
+
+        print_elapsed_time($start_time, $results, $opts);
+        $search_category->print_results($results, $opts);
+
+        return $results;
+    }
+?>