unit GateShare;

interface
uses
  Windows, Messages, Classes, SysUtils, JSocket, WinSock, SyncObjs, Common;
resourcestring

  g_sProductName = '飄飄網絡防攻擊登陸網關 V 1.0';
  g_sUpDateTime = '更新日期: 2006/09/12';
  g_sProgram = '程序制作: 葉隨風飄 QQ:240621028';
  g_sWebSite = '程序網站: http://www.51ggame.com';

type
  TGList = class(TList)
  private
    GLock: TRTLCriticalSection;
  public
    constructor Create;
    destructor Destroy; override;
    procedure Lock;
    procedure UnLock;
  end;

  TBlockIPMethod = (mDisconnect, mBlock, mBlockList);
  TSockaddr = record
    nIPaddr: Integer;
    nAttackCount: Integer;
    dwStartAttackTick: LongWord;
  end;
  pTSockaddr = ^TSockaddr;

procedure LoadBlockIPFile();
procedure SendGameCenterMsg(wIdent: Word; sSendMsg: string);
procedure SaveBlockIPList();
var
  CS_MainLog: TCriticalSection;
  CS_FilterMsg: TCriticalSection;
  MainLogMsgList: TStringList;
  BlockIPList: TGList;
  TempBlockIPList: TGList;
  CurrIPaddrList: TGList;
  AttackIPaddrList: TGList;
  nIPCountLimit: Integer = 20;
  //nIPCountLimit2              :Integer = 40;
  nShowLogLevel: Integer = 3;
  StringList456A14: TStringList;
  GateClass: string = 'LoginGate';
  GateName: string = '登錄網關';

  TitleName: string = '飄飄網絡';
  ServerPort: Integer = 5500;
  ServerAddr: string = '127.0.0.1';
  GatePort: Integer = 7000;
  GateAddr: string = '0.0.0.0';
  boGateReady: Boolean = False;
  boShowMessage: Boolean;
  boStarted: Boolean = False;
  boClose: Boolean = False;
  boServiceStart: Boolean = False;
  dwKeepAliveTick: LongWord;
  boKeepAliveTimcOut: Boolean = False;
  nSendMsgCount: Integer;
  n456A2C: Integer;
  n456A30: Integer;
  boSendHoldTimeOut: Boolean;
  dwSendHoldTick: LongWord;
  boDecodeLock: Boolean;
  nMaxConnOfIPaddr: Integer = 10;
  BlockMethod: TBlockIPMethod = mBlockList;
  dwKeepConnectTimeOut: LongWord = 60 * 1000;
  g_boDynamicIPDisMode: Boolean = False; //用于動態IP，分機放置登錄網關用，打開此模式后，網關將會把連接登錄服務器的IP地址，當為服務器IP，發給登錄服務器，客戶端將直接使用此IP連接角色網關
  g_dwGameCenterHandle: THandle;
  g_sNowStartGate: string = '正在啟動登錄網關...';
  g_sNowStartOK: string = '啟動登錄網關完成...';

  dwAttackTick: LongWord = 100;
  nAttackCount: Integer = 10;
  nReviceMsgLength: Integer = 360; //每MS允許接受的長度，超過即認為是攻擊
  dwReviceTick: LongWord = 500;
  nAttackLevel: Integer = 2;
  nMaxClientMsgCount: Integer = 1;
const
  tLoginGate = 4;
implementation
uses Grobal2;

procedure LoadBlockIPFile();
var
  I: Integer;
  sFileName: string;
  LoadList: TStringList;
  sIPaddr: string;
  nIPaddr: Integer;
  IPaddr: pTSockaddr;
begin
  sFileName := '.\BlockIPList.txt';
  if FileExists(sFileName) then begin
    LoadList := TStringList.Create;
    LoadList.LoadFromFile(sFileName);
    for I := 0 to LoadList.Count - 1 do begin
      sIPaddr := Trim(LoadList.Strings[0]);
      if sIPaddr = '' then Continue;
      nIPaddr := inet_addr(PChar(sIPaddr));
      if nIPaddr = INADDR_NONE then Continue;
      New(IPaddr);
      FillChar(IPaddr^, SizeOf(TSockaddr), 0);
      IPaddr.nIPaddr := nIPaddr;
      BlockIPList.Add(IPaddr);
    end;
    LoadList.Free;
  end;
end;

procedure SaveBlockIPList();
var
  I: Integer;
  SaveList: TStringList;
begin
  SaveList := TStringList.Create;
  for I := 0 to BlockIPList.Count - 1 do begin
    SaveList.Add(StrPas(inet_ntoa(TInAddr(pTSockaddr(BlockIPList.Items[I]).nIPaddr))));
  end;
  SaveList.SaveToFile('.\BlockIPList.txt');
  SaveList.Free;
end;

procedure SendGameCenterMsg(wIdent: Word; sSendMsg: string);
var
  SendData: TCopyDataStruct;
  nParam: Integer;
begin
  nParam := MakeLong(Word(tLoginGate), wIdent);
  SendData.cbData := Length(sSendMsg) + 1;
  GetMem(SendData.lpData, SendData.cbData);
  StrCopy(SendData.lpData, PChar(sSendMsg));
  SendMessage(g_dwGameCenterHandle, WM_COPYDATA, nParam, Cardinal(@SendData));
  FreeMem(SendData.lpData);
end;

constructor TGList.Create;
begin
  inherited Create;
  InitializeCriticalSection(GLock);
end;

destructor TGList.Destroy;
begin
  DeleteCriticalSection(GLock);
  inherited;
end;

procedure TGList.Lock;
begin
  EnterCriticalSection(GLock);
end;

procedure TGList.UnLock;
begin
  LeaveCriticalSection(GLock);
end;

initialization
  begin
    CS_MainLog := TCriticalSection.Create;
    CS_FilterMsg := TCriticalSection.Create;
    StringList456A14 := TStringList.Create;
    MainLogMsgList := TStringList.Create;
  end;

finalization
  begin
    StringList456A14.Free;
    MainLogMsgList.Free;
    CS_MainLog.Free;
    CS_FilterMsg.Free;
  end;

end.