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/*
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/*
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 * VNag - Nagios Framework for PHP
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 * VNag - Nagios Framework for PHP
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 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>
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 * Developed by Daniel Marschall, ViaThinkSoft <www.viathinksoft.com>
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 * Licensed under the terms of the Apache 2.0 license
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 * Licensed under the terms of the Apache 2.0 license
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 *
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 *
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 * Revision 2022-09-12
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 * Revision 2023-05-02
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 */
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 */
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declare(ticks=1);
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declare(ticks=1);
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class MinecraftJavaVersionCheck extends VNag {
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class MinecraftJavaVersionCheck extends VNag {
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                        // These headers are important! Otherwise the request will be blocked by AkamaiGhost
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                        // These headers are important! Otherwise the request will be blocked by AkamaiGhost
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                        "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36",
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                        "User-Agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36",
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                        "Accept-Language: de-DE,de;q=0.9,en-DE;q=0.8,en;q=0.7,en-US;q=0.6",
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                        "Accept-Language: de-DE,de;q=0.9,en-DE;q=0.8,en;q=0.7,en-US;q=0.6",
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                        "Accept-Encoding: none"
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                        "Accept-Encoding: none"
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                );
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                );
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                // curl 'https://www.minecraft.net/en-us/download/server' \
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                //      -H 'user-agent: Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/96.0.4664.93 Safari/537.36' \
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                //      -H 'accept-language: de-DE,de;q=0.9,en-DE;q=0.8,en;q=0.7,en-US;q=0.6' \
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                // TODO: Version is currently not shown anymore: https://bugs.mojang.com/browse/WEB-6497
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                //      --compressed
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                /*
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                $ch = curl_init();
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                $ch = curl_init();
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                curl_setopt($ch, CURLOPT_URL,"https://www.minecraft.net/en-us/download/server"); // TODO: make locale configurable?
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                curl_setopt($ch, CURLOPT_URL,"https://www.minecraft.net/en-us/download/server"); // TODO: make locale configurable?
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                curl_setopt($ch, CURLOPT_POST, 0);
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                curl_setopt($ch, CURLOPT_POST, 0);
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                curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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                curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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                curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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                $cont = curl_exec($ch);
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                $cont = curl_exec($ch);
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                curl_close($ch);
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                curl_close($ch);
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                if (!$cont) throw new Exception("Cannot detect latest available Minecraft version (HTTPS request failed)");
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                if (!$cont) throw new Exception("Cannot detect latest available Minecraft version (HTTPS request failed)");
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                preg_match_all('@minecraft_server\\.(.+)\\.jar@U', $cont, $m);
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                preg_match_all('@minecraft_server\\.(.+)\\.jar@U', $cont, $m);
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                if (!isset($m[1][0])) throw new Exception("Cannot detect latest available Minecraft version (regex pattern mismatch)");
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                if (!isset($m[1][0])) throw new Exception("Cannot detect latest available Minecraft version (regex pattern mismatch)");
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                return $m[1][0];
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                return $m[1][0];
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                */
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                for ($page=1; $page<=2; $page++) {
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                        $url = 'https://feedback.minecraft.net/hc/en-us/sections/360001186971-Release-Changelogs';
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                        if ($page > 1) $url .= '?page='.$page;
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                        $url = 'https://webcache.googleusercontent.com/search?q=cache:'.urlencode($url); // Bypass CloudFlare...
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                        $ch = curl_init();
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                        curl_setopt($ch, CURLOPT_URL, $url);
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                        curl_setopt($ch, CURLOPT_POST, 0);
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                        curl_setopt($ch, CURLOPT_HTTPHEADER, $headers);
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                        curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
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                        $cont = curl_exec($ch);
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                        curl_close($ch);
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                        if (!$cont) throw new Exception("Cannot detect latest available Minecraft version (HTTPS request failed)");
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                        preg_match_all('@>Minecraft: Java Edition \\- (.+)</@U', $cont, $m);
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                        if (isset($m[1][0])) return $m[1][0];
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                }
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                throw new Exception("Cannot detect latest available Minecraft version (regex pattern mismatch)");
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        }
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        }
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        protected function get_installed_minecraft_version($local_path) {
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        protected function get_installed_minecraft_version($local_path) {
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                if (substr($local_path,-4) == '.jar') {
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                if (substr($local_path,-4) == '.jar') {
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                        $files = glob($local_path);
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                        $files = glob($local_path);