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/*
 * Copyright (c) 2016 The ZLMediaKit project authors. All Rights Reserved.
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 *
 * This file is part of ZLMediaKit(https://github.com/xiongziliang/ZLMediaKit).
 *
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 * Use of this source code is governed by MIT license that can be found in the
 * LICENSE file in the root of the source tree. All contributing project authors
 * may be found in the AUTHORS file in the root of the source tree.
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 */

#include <map>
#include <signal.h>
#include <iostream>
#include "Util/MD5.h"
#include "Util/File.h"
#include "Util/logger.h"
#include "Util/SSLBox.h"
#include "Util/onceToken.h"
#include "Util/CMD.h"
#include "Network/TcpServer.h"
#include "Poller/EventPoller.h"
#include "Common/config.h"
#include "Rtsp/RtspSession.h"
#include "Rtmp/RtmpSession.h"
#include "Shell/ShellSession.h"
#include "Http/WebSocketSession.h"
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#include "Rtp/RtpServer.h"
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#include "WebApi.h"
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#include "WebHook.h"
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#if !defined(_WIN32)
#include "System.h"
#endif//!defined(_WIN32)

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using namespace std;
using namespace toolkit;
using namespace mediakit;

namespace mediakit {
////////////HTTP配置///////////
namespace Http {
#define HTTP_FIELD "http."
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const string kPort = HTTP_FIELD"port";
const string kSSLPort = HTTP_FIELD"sslport";
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onceToken token1([](){
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    mINI::Instance()[kPort] = 80;
    mINI::Instance()[kSSLPort] = 443;
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},nullptr);
}//namespace Http

////////////SHELL配置///////////
namespace Shell {
#define SHELL_FIELD "shell."
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const string kPort = SHELL_FIELD"port";
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onceToken token1([](){
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    mINI::Instance()[kPort] = 9000;
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},nullptr);
} //namespace Shell

////////////RTSP服务器配置///////////
namespace Rtsp {
#define RTSP_FIELD "rtsp."
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const string kPort = RTSP_FIELD"port";
const string kSSLPort = RTSP_FIELD"sslport";
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onceToken token1([](){
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    mINI::Instance()[kPort] = 554;
    mINI::Instance()[kSSLPort] = 332;
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},nullptr);

} //namespace Rtsp

////////////RTMP服务器配置///////////
namespace Rtmp {
#define RTMP_FIELD "rtmp."
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const string kPort = RTMP_FIELD"port";
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const string kSSLPort = RTMP_FIELD"sslport";
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onceToken token1([](){
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    mINI::Instance()[kPort] = 1935;
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    mINI::Instance()[kSSLPort] = 19350;
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},nullptr);
} //namespace RTMP
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////////////Rtp代理相关配置///////////
namespace RtpProxy {
#define RTP_PROXY_FIELD "rtp_proxy."
const string kPort = RTP_PROXY_FIELD"port";
onceToken token1([](){
    mINI::Instance()[kPort] = 10000;
},nullptr);
} //namespace RtpProxy

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}  // namespace mediakit


class CMD_main : public CMD {
public:
    CMD_main() {
        _parser.reset(new OptionParser(nullptr));

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#if !defined(_WIN32)
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        (*_parser) << Option('d',/*该选项简称,如果是\x00则说明无简称*/
                             "daemon",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgNone,/*该选项后面必须跟值*/
                             nullptr,/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
                             "是否以Daemon方式启动",/*该选项说明文字*/
                             nullptr);
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#endif//!defined(_WIN32)
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        (*_parser) << Option('l',/*该选项简称,如果是\x00则说明无简称*/
                             "level",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgRequired,/*该选项后面必须跟值*/
                             to_string(LTrace).data(),/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
                             "日志等级,LTrace~LError(0~4)",/*该选项说明文字*/
                             nullptr);

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        (*_parser) << Option('m',/*该选项简称,如果是\x00则说明无简称*/
                             "max_day",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgRequired,/*该选项后面必须跟值*/
                             "7",/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
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                             "日志最多保存天数",/*该选项说明文字*/
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                             nullptr);

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        (*_parser) << Option('c',/*该选项简称,如果是\x00则说明无简称*/
                             "config",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgRequired,/*该选项后面必须跟值*/
                             (exeDir() + "config.ini").data(),/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
                             "配置文件路径",/*该选项说明文字*/
                             nullptr);

        (*_parser) << Option('s',/*该选项简称,如果是\x00则说明无简称*/
                             "ssl",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgRequired,/*该选项后面必须跟值*/
                             (exeDir() + "ssl.p12").data(),/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
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                             "ssl证书文件或文件夹,支持p12/pem类型",/*该选项说明文字*/
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                             nullptr);

        (*_parser) << Option('t',/*该选项简称,如果是\x00则说明无简称*/
                             "threads",/*该选项全称,每个选项必须有全称;不得为null或空字符串*/
                             Option::ArgRequired,/*该选项后面必须跟值*/
                             to_string(thread::hardware_concurrency()).data(),/*该选项默认值*/
                             false,/*该选项是否必须赋值,如果没有默认值且为ArgRequired时用户必须提供该参数否则将抛异常*/
                             "启动事件触发线程数",/*该选项说明文字*/
                             nullptr);
    }

    virtual ~CMD_main() {}
    virtual const char *description() const {
        return "主程序命令参数";
    }
};

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#if !defined(_WIN32)
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static void inline listen_shell_input(){
    cout << "> 欢迎进入命令模式,你可以输入\"help\"命令获取帮助" << endl;
    cout << "> " << std::flush;
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    signal(SIGTTOU,SIG_IGN);
    signal(SIGTTIN,SIG_IGN);
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    SockUtil::setNoBlocked(STDIN_FILENO);
    auto oninput = [](int event) {
        if (event & Event_Read) {
            char buf[1024];
            int n = read(STDIN_FILENO, buf, sizeof(buf));
            if (n > 0) {
                buf[n] = '\0';
                try {
                    CMDRegister::Instance()(buf);
                    cout << "> " << std::flush;
                } catch (ExitException &ex) {
                    InfoL << "ExitException";
                    kill(getpid(), SIGINT);
                } catch (std::exception &ex) {
                    cout << ex.what() << endl;
                }
            } else {
                DebugL << get_uv_errmsg();
                EventPollerPool::Instance().getFirstPoller()->delEvent(STDIN_FILENO);
            }
        }

        if (event & Event_Error) {
            WarnL << "Event_Error";
            EventPollerPool::Instance().getFirstPoller()->delEvent(STDIN_FILENO);
        }
    };
    EventPollerPool::Instance().getFirstPoller()->addEvent(STDIN_FILENO, Event_Read | Event_Error | Event_LT,oninput);
}
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#endif//!defined(_WIN32)

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//全局变量,在WebApi中用于保存配置文件用
string g_ini_file;
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int start_main(int argc,char *argv[]) {
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    {
        CMD_main cmd_main;
        try {
            cmd_main.operator()(argc, argv);
        } catch (std::exception &ex) {
            cout << ex.what() << endl;
            return -1;
        }
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        bool bDaemon = cmd_main.hasKey("daemon");
        LogLevel logLevel = (LogLevel) cmd_main["level"].as<int>();
        logLevel = MIN(MAX(logLevel, LTrace), LError);
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        g_ini_file = cmd_main["config"];
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        string ssl_file = cmd_main["ssl"];
        int threads = cmd_main["threads"];
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        //设置日志
        Logger::Instance().add(std::make_shared<ConsoleChannel>("ConsoleChannel", logLevel));
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#ifndef ANDROID
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        auto fileChannel = std::make_shared<FileChannel>("FileChannel", exeDir() + "log/", logLevel);
        //日志最多保存天数
        fileChannel->setMaxDay(cmd_main["max_day"]);
        Logger::Instance().add(fileChannel);
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#endif//
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#if !defined(_WIN32)
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        pid_t pid = getpid();
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        if (bDaemon) {
            //启动守护进程
            System::startDaemon();
        }
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        //开启崩溃捕获等
        System::systemSetup();
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#endif//!defined(_WIN32)
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        //启动异步日志线程
        Logger::Instance().setWriter(std::make_shared<AsyncLogWriter>());
        //加载配置文件,如果配置文件不存在就创建一个
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        loadIniConfig(g_ini_file.data());
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        if(!File::is_dir(ssl_file.data())){
            //不是文件夹,加载证书,证书包含公钥和私钥
            SSL_Initor::Instance().loadCertificate(ssl_file.data());
        }else{
            //加载文件夹下的所有证书
            File::scanDir(ssl_file,[](const string &path, bool isDir){
                if(!isDir){
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                    //最后的一个证书会当做默认证书(客户端ssl握手时未指定主机)
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                    SSL_Initor::Instance().loadCertificate(path.data());
                }
                return true;
            });
        }
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        uint16_t shellPort = mINI::Instance()[Shell::kPort];
        uint16_t rtspPort = mINI::Instance()[Rtsp::kPort];
        uint16_t rtspsPort = mINI::Instance()[Rtsp::kSSLPort];
        uint16_t rtmpPort = mINI::Instance()[Rtmp::kPort];
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        uint16_t rtmpsPort = mINI::Instance()[Rtmp::kSSLPort];
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        uint16_t httpPort = mINI::Instance()[Http::kPort];
        uint16_t httpsPort = mINI::Instance()[Http::kSSLPort];
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        uint16_t rtpPort = mINI::Instance()[RtpProxy::kPort];
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        //设置poller线程数,该函数必须在使用ZLToolKit网络相关对象之前调用才能生效
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        EventPollerPool::setPoolSize(threads);

        //简单的telnet服务器,可用于服务器调试,但是不能使用23端口,否则telnet上了莫名其妙的现象
        //测试方法:telnet 127.0.0.1 9000
        TcpServer::Ptr shellSrv(new TcpServer());
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        //rtsp[s]服务器, 可用于诸如亚马逊echo show这样的设备访问
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        TcpServer::Ptr rtspSrv(new TcpServer());
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        TcpServer::Ptr rtspSSLSrv(new TcpServer());

        //rtmp[s]服务器
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        TcpServer::Ptr rtmpSrv(new TcpServer());
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        TcpServer::Ptr rtmpsSrv(new TcpServer());

        //http[s]服务器
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        TcpServer::Ptr httpSrv(new TcpServer());
        TcpServer::Ptr httpsSrv(new TcpServer());
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#if defined(ENABLE_RTPPROXY)
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        //GB28181 rtp推流端口,支持UDP/TCP
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        RtpServer::Ptr rtpServer = std::make_shared<RtpServer>();
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#endif//defined(ENABLE_RTPPROXY)

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        try {
            //rtsp服务器,端口默认554
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            if(rtspPort) { rtspSrv->start<RtspSession>(rtspPort); }
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            //rtsps服务器,端口默认322
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            if(rtspsPort) { rtspSSLSrv->start<RtspSessionWithSSL>(rtspsPort); }

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            //rtmp服务器,端口默认1935
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            if(rtmpPort) { rtmpSrv->start<RtmpSession>(rtmpPort); }
            //rtmps服务器,端口默认19350
            if(rtmpsPort) { rtmpsSrv->start<RtmpSessionWithSSL>(rtmpsPort); }

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            //http服务器,端口默认80
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            if(httpPort) { httpSrv->start<HttpSession>(httpPort); }
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            //https服务器,端口默认443
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            if(httpsPort) { httpsSrv->start<HttpsSession>(httpsPort); }

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            //telnet远程调试服务器
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            if(shellPort) { shellSrv->start<ShellSession>(shellPort); }
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#if defined(ENABLE_RTPPROXY)
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            //创建rtp服务器
            if(rtpPort){ rtpServer->start(rtpPort); }
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#endif//defined(ENABLE_RTPPROXY)

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        }catch (std::exception &ex){
            WarnL << "端口占用或无权限:" << ex.what() << endl;
            ErrorL << "程序启动失败,请修改配置文件中端口号后重试!" << endl;
            sleep(1);
#if !defined(_WIN32)
            if(pid != getpid()){
                kill(pid,SIGINT);
            }
#endif
            return -1;
        }
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        installWebApi();
        InfoL << "已启动http api 接口";
        installWebHook();
        InfoL << "已启动http hook 接口";

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#if !defined(_WIN32) && !defined(ANDROID)
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        if (!bDaemon) {
            //交互式shell输入
            listen_shell_input();
        }
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#endif
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        //设置退出信号处理函数
        static semaphore sem;
        signal(SIGINT, [](int) {
            InfoL << "SIGINT:exit";
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            signal(SIGINT, SIG_IGN);// 设置退出信号
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            sem.post();
        });// 设置退出信号
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#if !defined(_WIN32)
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        signal(SIGHUP, [](int) { mediakit::loadIniConfig(g_ini_file.data()); });
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#endif
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        sem.wait();
    }
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    unInstallWebApi();
    unInstallWebHook();
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    //休眠1秒再退出,防止资源释放顺序错误
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    InfoL << "程序退出中,请等待...";
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    sleep(1);
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    InfoL << "程序退出完毕!";
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    return 0;
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}

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#ifndef DISABLE_MAIN
int main(int argc,char *argv[]) {
    return start_main(argc,argv);
}
#endif //DISABLE_MAIN