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                <?php
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                namespace BPT\receiver;
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                use BPT\api\telegram;
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                use BPT\BPT;
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                use BPT\constants\loggerTypes;
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                use BPT\exception\bptException;
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                use BPT\lock;
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                use BPT\logger;
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                use BPT\settings;
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                use BPT\tools;
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                use CURLFile;
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                class webhook extends receiver {
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                    public static function init () {
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                        if (settings::$multi) {
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                            multi::init();
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                        }
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                        else {
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                            if (lock::exist('BPT-HOOK')) {
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                                self::checkSecret();
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                                receiver::telegramVerify();
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                                receiver::processUpdate();
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                                logger::write('Update received , lets process it ;)');
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                            }
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                            else {
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                                self::deleteOldLocks();
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                                self::checkURL();
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                                self::setCertificate();
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                                $url = self::setURL();
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                                $secret = tools::randomString(64);
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                                self::setWebhook($url,$secret);
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                                lock::save('BPT-HOOK',$secret);
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                                BPT::exit('Done');
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                            }
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                        }
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                    }
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                    private static function deleteOldLocks() {
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                        if (lock::exist('BPT-MULTI-EXEC')) {
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                            lock::delete('BPT-MULTI-EXEC');
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                        }
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                        if (lock::exist('BPT-MULTI-CURL')) {
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                            lock::delete('BPT-MULTI-CURL');
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                        }
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                        if (lock::exist('getUpdate')) {
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                            lock::delete('getUpdate');
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                        }
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                    }
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                    protected static function setWebhook(string $url,string $secret = '') {
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                        $res = telegram::setWebhook($url, settings::$certificate, max_connections:settings::$max_connection, allowed_updates : settings::$allowed_updates, secret_token: $secret);
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                        if (telegram::$status) {
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                            logger::write('Webhook was set successfully',loggerTypes::INFO);
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                        }
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                        else {
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                            logger::write("There is some problem happened , telegram response : \n".json_encode($res),loggerTypes::ERROR);
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                            BPT::exit(print_r($res,true));
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                        }
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                    }
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                    protected static function checkURL() {
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                        if (!(isset($_SERVER['SERVER_NAME']) && isset($_SERVER['REQUEST_URI']))) {
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                            logger::write('For using webhook receiver , you should open this file in your webserver(by domain)',loggerTypes::ERROR);
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                            throw new bptException('WEBHOOK_NEED_URL');
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                        }
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                    }
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                    private static function setURL(): string {
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                        return (isset(settings::$certificate) ? 'http://' : 'https://') . $_SERVER['SERVER_NAME'] . $_SERVER['SCRIPT_NAME'];
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                    }
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                    protected static function setCertificate() {
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                        if (isset(settings::$certificate)) {
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                            if (is_string(settings::$certificate)) {
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                                if (file_exists(settings::$certificate)) {
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                                    settings::$certificate = new CURLFile(settings::$certificate);
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                                }
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                                else {
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                                    settings::$certificate = null;
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                                }
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                            }
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                        }
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                    }
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                    private static function checkSecret() {
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                        $secret = lock::read('BPT-HOOK');
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                        if (!isset($_SERVER['HTTP_X_TELEGRAM_BOT_API_SECRET_TOKEN']) || $_SERVER['HTTP_X_TELEGRAM_BOT_API_SECRET_TOKEN'] != $secret) {
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                            logger::write('not authorized access denied. IP : '. $_SERVER['REMOTE_ADDR'] ?? 'unknown',loggerTypes::WARNING);
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                            BPT::exit();
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                        }
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                    }
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                }  |