unit USMSSender;

{$WARN SYMBOL_PLATFORM OFF}

interface

uses
  ComObj, ActiveX, RealICQInterfaces_TLB, StdVcl, Winsock2, RealICQSocket, Windows;

type
  TSMSSender = class(TAutoObject, ISMSSender, IObjectSafety)
  private
    FObjectSafetyFlags: DWORD;  
    FServerAddress: String;
    FServerPort: SYSINT;
  protected
    function Get_ServerAddress: PWideChar; safecall;
    procedure Set_ServerAddress(Value: OleVariant); safecall;
    function Get_ServerPort: SYSINT; safecall;
    procedure Set_ServerPort(Value: SYSINT); safecall;
    procedure SendSMS(PhoneID, P5PID: OleVariant; SendDateTime: TDateTime;
      Content: OleVariant); safecall;

    function GetInterfaceSafetyOptions(const IID: TIID; pdwSupportedOptions,
      pdwEnabledOptions: PDWORD): HResult; stdcall;
    function SetInterfaceSafetyOptions(const IID: TIID; dwOptionSetMask,
      dwEnabledOptions: DWORD): HResult; stdcall;
  end;

implementation

uses ComServ;

//------------------------------------------------------------------------------
function TSMSSender.GetInterfaceSafetyOptions(const IID: TIID;
  pdwSupportedOptions, pdwEnabledOptions: PDWORD): HResult;
var
  Unk: IUnknown;
begin
  if (pdwSupportedOptions = nil) or (pdwEnabledOptions = nil) then
  begin
    Result := E_POINTER;
    Exit;
  end;
  Result := QueryInterface(IID, Unk);
  if Result = S_OK then
  begin
    pdwSupportedOptions^ := INTERFACESAFE_FOR_UNTRUSTED_CALLER or
      INTERFACESAFE_FOR_UNTRUSTED_DATA;
    pdwEnabledOptions^ := FObjectSafetyFlags and
      (INTERFACESAFE_FOR_UNTRUSTED_CALLER or INTERFACESAFE_FOR_UNTRUSTED_DATA);
  end
  else begin
    pdwSupportedOptions^ := 0;
    pdwEnabledOptions^ := 0;
  end;
end;

//------------------------------------------------------------------------------
function TSMSSender.SetInterfaceSafetyOptions(const IID: TIID;
  dwOptionSetMask, dwEnabledOptions: DWORD): HResult;
var
  Unk: IUnknown;
begin
  Result := QueryInterface(IID, Unk);
  if Result <> S_OK then Exit;
  FObjectSafetyFlags := dwEnabledOptions and dwOptionSetMask;
end;

function TSMSSender.Get_ServerAddress: PWideChar;
begin
end;

procedure TSMSSender.Set_ServerAddress(Value: OleVariant);
begin
  FServerAddress := Value;
end;

function TSMSSender.Get_ServerPort: SYSINT;
begin
end;

procedure TSMSSender.Set_ServerPort(Value: SYSINT);
begin
  FServerPort := Value;
end;

procedure TSMSSender.SendSMS(PhoneID, P5PID: OleVariant;
  SendDateTime: TDateTime; Content: OleVariant);
var
  ServerSocket: TSocket;
  ServerAddr: TSockAddrIn;
  LastError: Integer;
  
  nIndex,
  ReturnValue: Integer;
  Buf: array[0..255] of Byte;

  FPhoneID, FP5PID, FContent: String;
  PhoneIDLength,
  P5PIDLength,
  ContentLength,
  BufferLength: SmallInt;
  SendBuffer: Array of Byte;
begin
  ServerSocket := Socket(AF_INET, SOCK_STREAM, IPPROTO_TCP);
  if ServerSocket = INVALID_SOCKET then raise TSocketException.CreateFmt('创建套接字失败，错误代码：%d',[WSAGetLastError]);

  ServerAddr.sin_family:= AF_INET;
  ServerAddr.sin_port:= htons(FServerPort);
  ServerAddr.sin_addr.S_addr:= inet_addr(PChar(FServerAddress));

  connect(ServerSocket, @ServerAddr, SizeOf(ServerAddr));
  LastError := WSAGetLastError();
  if LastError <> 0 then
  begin
    closesocket(ServerSocket);
    raise TSocketException.CreateFmt('无法建立与服务器的连接，错误代码：%d', [LastError]);
  end;

  FPhoneID := PhoneID;
  FP5PID := P5PID;
  FContent := Content;
  
  PhoneIDLength := Length(FPhoneID);
  P5PIDLength := Length(FP5PID);
  ContentLength := Length(FContent);

  BufferLength := 14 + PhoneIDLength + P5PIDLength + ContentLength;

  SetLength(SendBuffer, BufferLength);
  nIndex := 0;

  //填充 (1)协议类型（0x98）            1byte
  SendBuffer[nIndex] := $98;
  Inc(nIndex, 1);

  //填充 (2)消息总长度                  2byte
  CopyMemory(@SendBuffer[nIndex], @BufferLength, 2);
  Inc(nIndex, 2);

  //填充 (3)电话号码长度                  1byte
  SendBuffer[nIndex] := Byte(PhoneIDLength);    
  Inc(nIndex, 1);

  //填充 (4)电话号码                     动态长度，由(4)指定
  CopyMemory(@SendBuffer[nIndex], PChar(FPhoneID), PhoneIDLength);
  Inc(nIndex, PhoneIDLength);

  //填充 (5)用户名长度                  1byte
  SendBuffer[nIndex] := Byte(P5PIDLength);
  Inc(nIndex, 1);

  //填充 (6)用户名                      动态长度，由(4)指定
  CopyMemory(@SendBuffer[nIndex], PChar(FP5PID), P5PIDLength);
  Inc(nIndex, P5PIDLength);

  //填充 (7)短消息长度长度                    1byte
  SendBuffer[nIndex] := Byte(ContentLength);
  Inc(nIndex, 1);

  //填充 (8)短消息长度                       动态长度，由(6)指定
  CopyMemory(@SendBuffer[nIndex], PChar(FContent), ContentLength);
  Inc(nIndex, ContentLength);

  //填充 (9)发送时间                    8byte，64位浮点类型（double即TDateTime类型）
  CopyMemory(@SendBuffer[nIndex], @SendDateTime, 8);
  //Inc(nIndex, 8);

  ReturnValue := Send(ServerSocket, SendBuffer[0], BufferLength, 0);
  if ReturnValue <= 0 then
  begin
    closesocket(ServerSocket);
    raise TSocketException.Create('往服务器发送数据失败');
  end;

  FillChar(Buf, 256, #0);
  ReturnValue := Recv(ServerSocket, Buf, 1, 0);
  if ReturnValue <> 1 then
  begin
    closesocket(ServerSocket);
    raise TSocketException.Create('服务器上返回了错误的数据');
  end;
  
  closesocket(ServerSocket);
  if Buf[0] <> 0 then raise TSocketException.Create('数据发送失败');
end;

initialization
  TAutoObjectFactory.Create(ComServer, TSMSSender, Class_SMSSender,
    ciMultiInstance, tmApartment);
end.