Self-Host

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

engines/librex/fallback.php

@@ -0,0 +1,81 @@
+<?php
+
+    class LibreXFallback extends EngineRequest {
+        protected $instance;
+        public function __construct($instance, $opts, $mh) {
+            $this->instance = $instance;
+            parent::__construct($opts, $mh);
+        }
+
+        public function get_request_url() {
+           return $this->instance . "api.php?" . opts_to_params($this->opts) . "&nfb=1";
+        }
+
+        public function parse_results($response) {
+            $response = json_decode($response, true);
+            if (!$response)
+                return array();
+
+            return array_values($response);
+        }
+    }
+
+    function load_instances($cooldowns) {
+        $instances_json = json_decode(file_get_contents("instances.json"), true);
+
+        if (empty($instances_json["instances"]))
+            return array();
+
+        $instances = array_map(fn($n) => $n['clearnet'], array_filter($instances_json['instances'], fn($n) => !is_null($n['clearnet'])));
+        $instances = array_filter($instances, fn($n) => !has_cooldown($n, $cooldowns));
+        shuffle($instances);
+        return $instances;
+    }
+
+    function get_librex_results($opts) {
+        if (!$opts->do_fallback)
+            return array();
+
+        $cooldowns = $opts->cooldowns;
+        $instances = load_instances($cooldowns);
+
+        $results = array();
+        $tries = 0;
+
+        do {
+            $tries++;
+
+            $instance = array_pop($instances);
+
+            if (!$instance)
+                break;
+
+            if (!(filter_var($instance, FILTER_VALIDATE_URL)))
+                continue;
+
+            if (parse_url($instance)["host"] == $_SERVER['HTTP_HOST'])
+                continue;
+
+            $librex_request = new LibreXFallback($instance, $opts, null);
+
+            $results = $librex_request->get_results();
+
+            if (!empty($results)) {
+                $results["results_source"] = parse_url($instance)["host"];
+                return $results;
+            }
+
+            // on fail then do this
+            $timeout = ($opts->request_cooldown ?? "1") * 60;
+            $cooldowns = set_cooldown($instance, $timeout, $cooldowns);
+
+        } while (!empty($instances));
+
+        return array(
+            "error" => array(
+                "message" => TEXTS["failure_fallback"]
+            )
+        );
+    }
+
+?>