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ICQDirect2.pas
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ICQDirect2.pas
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unit ICQDirect2;
{************************************************
For updates checkout: http://www.cobans.net
(C) Alex Demchenko([email protected])
Gene Reeves([email protected])
*************************************************}
{ Created on 01-2003}
{$HINTS OFF}
interface
//****************************************************************************//
// TicqDCM - Direct Connection Manager //
// Supplies interface to ICQClient for managing DCs. //
// //
// TicqBaseDC - Base class for direct connection //
// Handles all common tasks in a DC //
// //
// TicqDCxxxx - Direct Connection Handler classes //
// TicqDCNormal - Main DC class used for Msg, File Req, Chat Req, etc. //
// TicqDCRecvFile - DC class used to receive files. //
// TicqDCSendFile - DC class used to send files //
// TicqDCChat - DC class used for chat sessions. //
// //
//****************************************************************************//
// To Add New DC Type: //
// //
// 1. Create new subclass of TicqBaseDC. //
// 2. Implement Start, Stop and HandlePacket routines in new subclass. //
// 3. Add interface routines to TicqDCM for needed functionality. //
// //
//****************************************************************************//
// {ToDo}
// Need to add proxy support back into DC's
// must be done in ICQSock.pas.
// Need to finish TicqDCChat class
Uses
Classes, Sysutils, ICQWorks, ICQSock, WinSock, Windows;
Type
PicqDirectUser = ^TicqDirectUser;
TicqDirectUser = record
UIN, Cookie,
ExtIP, IntIP: LongWord;
Port:Word;
IsConnected:Boolean;
LastActivity: LongWord; // Last tickcount of activity
DCMain,
DCRecvFile,
DCSendFile,
DCChat:Integer
End;
TDirectUser = TicqDirectUser;
TicqBaseDC = class;
TicqDCnormal = Class;
//TicqEventType = (ET_NORMAL, ET_FILE_RECV, ET_FILE_SEND, ET_CHAT);
TicqDCEvent = Procedure(Sender: TicqBaseDC) of Object;
TOnHandle = procedure(Sender: TObject; UIN: LongWord; Pak: PRawPkt; Len: LongWord) of object;
TOnParseDirectPkt = procedure(Sender: TObject; Buffer: Pointer; BufLen: LongWord; Incoming: Boolean; UIN:Cardinal) of object;
//Direct Connection Manager
TicqDCM = Class(TObject)
Private
fSrv:TSrvSocket;
fTmpDC:TicqDCNormal;
fPort:Word;
fProxyType: TProxyType;
fProxyHost: String;
fProxyPort: Word;
fProxyAuth: Boolean;
fProxyPass: String;
fUserID: String;
fResolve: Boolean;
fOnError: TOnError;
fOnPktDump: TOnParseDirectPkt;
fOnHandle:TOnHandle;
fOnFTInit: TOnFTInit;
fOnFTStart: TOnFTStart;
fOnFTFileData: TOnFTFileData;
fOnSendFileStart:TOnSendFileStart;
fOnSendFileData:TOnSendFileData;
fOnSendFileFinish:TOnSendFileFinish;
fpUser:PicqDirectUser;
fDestroying:Boolean;
fTmrIdle:TThreadTimer;
procedure InternalOnErrorProc(Sender: TObject; ErrorType: TErrorType; ErrorMsg: String); virtual;
procedure InternalOnPktDump(Sender: TObject; Buffer: Pointer; BufLen: LongWord; Incoming: Boolean; UIN: Cardinal);
procedure InternalOnHandle(Sender: TObject; UIN: LongWord; Pak: PRawPkt; Len: LongWord);
procedure OnIdleTimeOut(Sender: TObject);
procedure OnSrvSockConnect(Sender: TObject; Socket: TMySocket);
Public
MyUIN:LongWord;
fDCL:TList; // List of DC's
fUL:TList; // List of User DC Info.
constructor Create(aMyUIN: LongWord);
destructor Destroy; override;
Function ExtIP:LongWord;
Function IntIP:LongWord;
procedure AddUser(aUIN, aCookie, aIPExt, aIPInt: LongWord; aPort: Word);
Function GetUserIndex(aUIN:LongWord; Var Idx:integer):Boolean;
Procedure HandleDCEvent(Sender: TicqBaseDC);
Function SendData(aUIN:LongWord; pPkt: PRawPkt):Boolean;
function SendDataFile(aUIN: LongWord; Pak: PRawPkt): Boolean;
Procedure DeleteUser(aUIN: LongWord);
Procedure DeleteDC(Var aIndex:Integer);
function AddFileUser(aUIN: LongWord; var aPort: Word; FTReqRec:Pointer = nil): Boolean;
Procedure SetFileRecord(aUIN: LongWord; aFileRec:TSendFileRec);
Function AddSendFileUser(aUIN:LongWord; Var aPort, aSeq:Word):Boolean;
function StopFileReceiving(aUIN: LongWord): Boolean;
Procedure StopFileSending(aUIN: LongWOrd);
procedure EstabilishConnection(aUIN: LongWord);
function ConnectionEstabilished(aUIN: LongWord): Boolean;
property BindPort: Word read FPort;
property ProxyType: TProxyType read FProxyType write FProxyType;
property ProxyHost: String read FProxyHost write FProxyHost;
property ProxyPort: Word read FProxyPort write FProxyPort;
property ProxyUserID: String read FUserID write FUserID;
property ProxyAuth: Boolean read FProxyAuth write FProxyAuth;
property ProxyPass: String read FProxyPass write FProxyPass;
property UseProxyResolve: Boolean read FResolve write FResolve default False;
Property pUser:PicqDirectUser read fpUser;
property OnPktDump: TOnParseDirectPkt read FOnPktDump write FOnPktDump;
property OnHandle: TOnHandle read FOnHandle write FOnHandle;
property OnError: TOnError read FOnError write FOnError;
property OnFTInit: TOnFTInit read FOnFTInit write FOnFTInit;
property OnFTStart: TOnFTStart read FOnFTStart write FOnFTStart;
property OnFTFileData: TOnFTFileData read FOnFTFileData write FOnFTFileData;
Property OnSendFileStart:TonSendFileStart read FOnSendFileStart write FOnSendFileStart;
Property OnSendFileData:TOnSendFileData read fOnSendFileData write fOnSendFileData;
Property OnSendFileFinish:TOnSendFileFinish read fOnSendFileFinish write fOnSendFileFinish;
End;
TDirectControl = Class(TicqDCM);
TDirectClient = TDirectControl;
//Base Direct Connection Type
TicqBaseDC = Class(TObject)
Protected
fManager:TicqDCM;
fOnDCEvent:TicqDCEvent;
fRemUIN:LongWord;
FPort:Word;
fIncoming:Boolean;
FProxyType: TProxyType;
FProxyHost: String;
FProxyPort: Word;
FProxyAuth: Boolean;
FProxyPass: String;
FUserID: String;
FResolve: Boolean;
FOnError: TOnError;
FOnPktDump: TOnParseDirectPkt;
fOnHandle: TOnHandle;
fpUser: PicqDirectUser;
CSck:TMySocket;
SSck:TSrvSocket;
fDPkt:TRawPkt;
fPktLen:Integer;
fPktSize:Integer;
procedure SetCSck(aSock:TMySocket);
procedure OnSockError(Sender: TObject);
procedure OnSockConnectError(Sender: TObject);
procedure OnConnect(Sender: TObject);
procedure OnReceive(Sender: TObject; Socket: TSocket; Buffer: Pointer; BufLen: LongWord);
procedure OnIntPktDump(Sender: TObject; Buffer: Pointer; BufLen: LongWord; Incoming: Boolean; UIN: Cardinal);
procedure OnIntError(Sender: TObject; ErrorType: TErrorType; ErrorMsg: String); virtual;
Public
EventType:Integer;
MyUIN:LongWord;
constructor Create(aMyUIN: LongWord);
destructor Destroy; override;
Function Start:Boolean;Virtual;abstract; //Used to start connection.
Procedure Stop;Virtual;abstract; //Used to stop connection.
Function SendData(Pkt: PRawPkt):Boolean;Virtual; // Used to Send Data through Connection.
Function HandlePacket(pPkt: PRawPkt; PktLen:Integer):Boolean;Virtual;
Property Client:TMySocket Read CSck write SetCSck;
Property RemoteUIN:LongWord read fRemUIN write fRemUIN;
property BindPort: Word read FPort;
property ProxyType: TProxyType read FProxyType write FProxyType;
property ProxyHost: String read FProxyHost write FProxyHost;
property ProxyPort: Word read FProxyPort write FProxyPort;
property ProxyUserID: String read FUserID write FUserID;
property ProxyAuth: Boolean read FProxyAuth write FProxyAuth;
property ProxyPass: String read FProxyPass write FProxyPass;
property UseProxyResolve: Boolean read FResolve write FResolve default False;
Property OnDCEvent:TicqDCEvent read fOnDCEvent write fOnDCEvent;
property OnPktDump: TOnParseDirectPkt read FOnPktDump write FOnPktDump;
property OnHandle: TOnHandle read fOnHandle write fOnHandle;
property OnError: TOnError read FOnError write FOnError;
End;
// DC for Main DC
TicqDCNormal = Class(TicqBaseDC)
Private
Public
Constructor Create(aMyUIN: LongWord; aClient: TMySocket; Incoming:Boolean);
Function Start:Boolean;override;
Procedure Stop;override;
Function HandlePacket(pPkt: PRawPkt; PktLen:Integer):Boolean; Override;
End;
// DC for Recv File
TicqDCRecvFile = Class(TicqBaseDC)
private
fSrvConnected:Boolean;
Procedure OnRFSrvSockConnect(Sender: TObject; Socket: TMySocket);
Public
PDataPacket:PRawPkt;
DataPacketLen:LongWord;
IsLastPacket:Boolean;
TotalBytes:LongWord;
NickName:String;
FTStartRec:TFTStartRec;
FTRequestRec:TFTRequestRec;
FTPos:LongWord;
Constructor Create(MyUIN, aUIN: LongWord; aPort:Dword);
Function Start:Boolean;override;
Procedure Stop;override;
Function HandlePacket(pPkt: PRawPkt; PktLen:Integer):Boolean; Override;
End;
// DC for Send File
TicqDCSendFile = Class(TicqBaseDC)
Private
tmrSend:TThreadTimer;
fPeerReady:Boolean;
fRemPort:DWord;
fSeq:Word;
fPkt:TRawPkt;
fConnectionFinished: Boolean;
fTransfering:Boolean;
fAborted:Boolean;
procedure OnSFConnect(Sender: TObject);
procedure OnSFDisconnect(Sender: TObject);
procedure OnSendTimer(Sender: TObject);
Procedure OnDataSent(Sender: TObject);
Public
PDataPacket:PRawPkt;
DataPacketLen:LongWord;
IsLastPacket:Boolean;
SendFileRecord:TSendFileRec;
Constructor Create(MyUIN, aUIN: LongWord; aFileRec:TSendFileRec);
Destructor Destroy;override;
Function Start:Boolean;override;
Procedure Stop;override;
Function HandlePacket(pPkt: PRawPkt; PktLen:Integer):Boolean; Override;
Property Aborted:Boolean read fAborted;
End;
// DC for chat
TicqDCChat = Class(TicqBaseDC)
Private
Public
End;
Const
// PEER Commands
PEER_INIT = $FF;
PEER_INIT2 = $03;
PEER_MSG = $02;
PEER_FILE_INIT = $00;
PEER_FILE_INITACK= $01;
PEER_FILE_DATA = $06;
//Event Types
DCEVENT_OnFTInit = $0002;
DCEVENT_OnFTStart = $0004;
DCEVENT_OnFTFileData = $0008;
DCEVENT_OnSendFileStart = $0020;
DCEVENT_OnSendFileData = $0040;
DCEVENT_OnSendFileFinish= $0080;
// Idle Timeout
MAXTICKS_TIMEOUT = 18*60*60*5; { 5 min in ticks = 18 ticks per sec, 60 sec per min, 5 min}
ResourceString
RS_ERROR_BUFFEROVERRUN = 'Buffer Overrun Error';
RS_ERROR_NO_DC_WRONGVER = 'Can not estabilish direct connection due to client using an unsupported protocol version.';
RS_ERROR_NO_DC_SECURITY = 'Can not estabilish direct connection due to security issues.';
RS_ERROR_NO_DC_UNSUPPORTEDPROXY = 'Can not estabilish direct connection due to client using an unsupported proxy type.';
RS_ERROR_NO_DC_PACKETERROR = 'Can not estabilish direct connection due to Packet Error.';
implementation
Procedure GiveUpCpuTime;
var
Msg: TMsg;
begin
While PeekMessage(Msg, 0, 0, 0, PM_REMOVE) Do
begin
TranslateMessage(Msg);
DispatchMessage(Msg);
end;
End;
procedure FreeAndNil(var Obj);
var
P: TObject;
begin
P := TObject(Obj);
TObject(Obj) := nil;
P.Free;
end;
Function IPToStr(aIP:LongWord):String;
Var
HV:String;
Begin
HV := IntToHex(aIP, 8);
Result := '';
Result := IntToStr(HexToInt(Copy(HV, 7, 2))) + '.';
Result := Result + IntToStr(HexToInt(Copy(HV, 5, 2)))+ '.';
Result := Result + IntToStr(HexToInt(Copy(HV, 3, 2))) + '.';
Result := Result + IntToStr(HexToInt(Copy(HV, 1, 2)));
End;
//****************************************************************************//
{ TicqDCM }
constructor TicqDCM.Create(aMyUIN: LongWord);
Begin
inherited Create;
fDestroying := False;
fUL := TList.Create;
fDCL := TList.Create;
MyUIN := aMyUin;
fPort := FindBindPort;
GetMem(fpUser, SizeOf(TicqDirectUser));
With fpUser^ Do Begin
UIN := MyUIN;
Port := fPort;
ExtIP := LongWord(GetLocalIP);
IntIP := LongWord(GetLocalIP);
LastActivity := GetTickCount;
DCMain := -1;
DCRecvFile := -1;
DCSendFile := -1;
DCChat := -1;
End;
fSrv := TSrvSocket.Create;
fOnError := Nil;
fOnPktDump := Nil;
fOnHandle := Nil;
// idle timeout timer (fires once a sec and checks for nonactivity for MAXTICKS_TIMEOUT)
fTmrIdle := TThreadTimer.Create;
fTmrIdle.Interval := 1000;
fTmrIdle.OnTimer := OnIdleTimeOut;
fTmrIdle.Enabled := True;
fSrv.OnClientConnected := OnSrvSockConnect;
fSrv.StartServer(fPort);
End;
destructor TicqDCM.Destroy;
Begin
fTmrIdle.Enabled := False;
fTmrIdle.OnTimer := nil;
fTmrIdle.Free;
If fDestroying then Exit;
fDestroying := True;
fSrv.OnClientConnected := nil;
fSrv.StopServer;
fSrv.Free;
While fUL.Count > 0 do
DeleteUser(PicqDirectUser(fUL.items[0])^.UIN);
fUL.Free;
fDCL.Free;
FreeMemory(fpUser);
End;
Procedure TicqDCM.OnIdleTimeOut(Sender: TObject);
Var
i:integer;
aTC:LongWord;
Begin
If fUL.Count = 0 then Exit;
aTC := GetTickCount - MAXTICKS_TIMEOUT;
For i := 0 to fUL.Count -1 Do
With PicqDirectUser(fUL[i])^ Do
If LastActivity < aTC then Begin
if DCMain <> -1 then
DeleteDC(DCMain);
End;
End;
Function TicqDCM.ExtIP:LongWord;
Begin
Result := fpUser^.ExtIP;
End;
Function TicqDCM.IntIP:LongWord;
Begin
Result := fpUser^.IntIP;
End;
procedure TicqDCM.OnSrvSockConnect(Sender: TObject; Socket: TMySocket);
Begin
// Using Temp DC until recv PEER_INIT with user info.
fTmpDC := TicqDCNormal.Create(0,Socket, True);
GetMem(fTmpDC.fpUser, SizeOf(TicqDirectUser));
fTmpDC.MyUIN := MyUin;
fTmpDC.fManager := Self;
fTmpDC.fRemUIN := 0;
With fTmpDC.fpUser^ Do Begin
UIN := 0;
DCMain := -1;
DCRecvFile := -1;
DCSendFile := -1;
DCChat := -1;
End;
// Proxy Settings
fTmpDC.FProxyType := ProxyType;
fTmpDC.FProxyHost := ProxyHost;
fTmpDC.FProxyPort := ProxyPort;
fTmpDC.FProxyAuth := ProxyAuth;
fTmpDC.FProxyPass := ProxyPass;
fTmpDC.FUserID := FUserID;
fTmpDC.FResolve := FResolve;
fTmpDC.UseProxyResolve := UseProxyResolve;
// Events
fTmpDC.FOnError := InternalOnErrorProc;
fTmpDC.FOnPktDump := InternalOnPktDump;
fTmpDC.fOnHandle := InternalOnHandle;
fTmpDC.fOnDCEvent := HandleDCEvent;
fpUser^.DCMain := fDCL.Add(fTmpDC); // Add Connection to List
End;
procedure TicqDCM.InternalOnErrorProc(Sender: TObject; ErrorType: TErrorType; ErrorMsg: String);
Begin
If Assigned(fOnError) then
fOnError(Sender, ErrorType, ErrorMsg);
End;
procedure TicqDCM.InternalOnPktDump(Sender: TObject; Buffer: Pointer; BufLen: LongWord; Incoming: Boolean; UIN: Cardinal);
Begin
If assigned(fOnPktDump) then
fOnPktDump(Sender, Buffer, BufLen, Incoming, UIN);
End;
procedure TicqDCM.InternalOnHandle(Sender: TObject; UIN: LongWord; Pak: PRawPkt; Len: LongWord);
Begin
If Assigned(fOnHandle) then
fOnHandle(Sender, UIN, Pak, Len);
End;
Procedure TicqDCM.HandleDCEvent(Sender: TicqBaseDC);
Var
dcRF:TicqDCRecvFile;
dcSF:TicqDCSendFile;
Begin
// Handle Event From one of the DC's
Case Sender.EventType Of
DCEVENT_OnFTInit :
Begin
dcRF := TicqDCRecvFile(Sender);
If Assigned(fOnFTInit) then
fOnFTInit(Self, dcRF.RemoteUIN, dcRF.FTStartRec.FilesCount, dcRF.TotalBytes, dcRF.FTStartRec.Speed, dcRF.NickName);
End;
DCEVENT_OnFTStart :
Begin
dcRF := TicqDCRecvFile(Sender);
If Assigned(fOnFTStart) Then
fOnFTStart(Self, dcRF.FTStartRec, dcRF.FTRequestRec.FileName, dcRF.FTRequestRec.FileSize, dcRF.FTStartRec.Speed);
End;
DCEVENT_OnFTFileData :
Begin
dcRF := TicqDCRecvFile(Sender);
If assigned(fOnFTFileData) Then
fOnFTFileData(Self, dcRF.RemoteUIN, dcRF.PDataPacket, dcRF.DataPacketLen, dcRF.IsLastPacket);
End;
DCEVENT_OnSendFileStart :
Begin
dcSF := TicqDCSendFile(Sender);
If Assigned(fOnSendFileStart) Then
fOnSendFileStart(Self, dcSF.RemoteUIN, dcSF.SendFileRecord);
End;
DCEVENT_OnSendFileData :
Begin
dcSF := TicqDCSendFile(Sender);
If Assigned(fOnSendFileData) Then
fOnSendFileData(Self, dcSF.RemoteUIN, dcSF.PDataPacket, dcSF.DataPacketLen, dcSF.IsLastPacket);
End;
DCEVENT_OnSendFileFinish:
Begin
dcSF := TicqDCSendFile(Sender);
If Assigned(fOnSendFileFinish) Then
fOnSendFileFinish(Self, dcSF.RemoteUIN, dcSF.SendFileRecord, dcSF.Aborted);
End;
End;
End;
Function TicqDCM.SendData(aUIN:LongWord; pPkt: PRawPkt):Boolean;
Var
i:integer;
Begin
// Send Pkt through DCMain of User (aUIN)
Result := False;
If GetUserIndex(aUIN, i) then
With PicqDirectUser(fUL[i])^ Do
If IsConnected and (DCMain <> -1) Then Begin
TicqDCNormal(fDCL.Items[DCMain]).SendData(pPkt);
Result := True;
End;
End;
function TicqDCM.SendDataFile(aUIN: LongWord; Pak: PRawPkt): Boolean;
Var
i:Integer;
Begin
// Send Pkt Through DCRecvFile of User (aUIN)
Result := False;
If GetUserIndex(aUIN, i) then
With PicqDirectUser(fUL[i])^ Do
If DCRecvFile <> -1 then Begin
TicqDCRecvFile(fDCL[DCRecvFile]).SendData(Pak);
Result := True;
End;
End;
function TicqDCM.AddFileUser(aUIN: LongWord; var aPort: Word; FTReqRec:Pointer = nil): Boolean;
Var
I:integer;
aDC:TicqDCRecvFile;
FTRec:TFTRequestRec;
BPort:Word;
Begin
Result := False;
BPort := FindBindPort;
// Add a DCRecvFile to User (aUIN)
If GetUserIndex(aUin, i) then Begin
With PicqDirectUser(fUL[i])^ Do Begin
If DCRecvFile <> -1 Then
DeleteDC(DCRecvFile);
aPort := BPort;
aDC := TicqDCRecvFile.Create(MyUIN, aUin, aPort);
aDC.fIncoming := True;
DCRecvFile := fDCL.Add(aDC);
aDC.fpUser := PicqDirectUser(fUL.Items[i]);
aDC.fManager := Self;
aDC.FPort := BPort;
// Proxy Settings
aDC.FProxyType := ProxyType;
aDC.FProxyHost := ProxyHost;
aDC.FProxyPort := ProxyPort;
aDC.FProxyAuth := ProxyAuth;
aDC.FProxyPass := ProxyPass;
aDC.FUserID := FUserID;
aDC.FResolve := FResolve;
aDC.UseProxyResolve := UseProxyResolve;
// Events
aDC.FOnError := InternalOnErrorProc;
aDC.FOnPktDump := InternalOnPktDump;
aDC.fOnHandle := InternalOnHandle;
aDC.fOnDCEvent := HandleDCEvent;
If FTReqRec <> nil then
With aDC.FTRequestRec Do Begin
FTRec := TFTRequestRec(FTReqRec^);
ReqType := FTRec.ReqType;
ITime := FTRec.ITime;
IRandomID := FTRec.IRandomID;
UIN := FTRec.UIN;
Description := FTRec.Description;
FileName := FTRec.FileName;
FileSize := FTRec.FileSize;
Seq := FTRec.Seq;
Port := aPort;
End;
// Connect
aDC.Start;
Result := True;
End;
End;
End;
Procedure TicqDCM.SetFileRecord(aUIN: LongWord; aFileRec:TSendFileRec);
Var
i:integer;
aDC:TicqDCSendFile;
Begin
If GetUserIndex(aUIN, i) Then
With PicqDirectUser(fUL[i])^ Do Begin
If DCSendFile <> -1 Then
DeleteDC(DCSendFile);
aDC := TicqDCSendFile.Create(MyUin, aUin, aFileRec);
DCSendFile := fDCL.Add(aDC);
aDC.MyUIN := MyUin;
aDC.fpUser := PicqDirectUser(fUL[i]);
aDC.fIncoming := False;
aDC.fManager := Self;
aDC.FOnError := InternalOnErrorProc;
aDC.FOnPktDump := InternalOnPktDump;
aDC.fOnHandle := InternalOnHandle;
aDC.OnDCEvent := HandleDCEvent;
End;
End;
Function TicqDCM.AddSendFileUser(aUIN:LongWord; Var aPort, aSeq:Word):Boolean;
Var
i:integer;
Begin
// Add a DCSendFile to User (aUIN);
Result := False;
If GetUserIndex(aUin, i) Then
With PicqDirectUser(fUL[i])^ do Begin
If DCSendFile <> -1 Then
With TicqDCSendFile(fDCL[DCSendFile]) Do Begin
//fpUser^.Port := Port;
fSeq := aSeq;
fRemPort := aPort;
Start;
End;
End;
End;
function TicqDCM.StopFileReceiving(aUIN: LongWord): Boolean;
Var
I:Integer;
Begin
Result := false;
// Break DCRecvFile connection for User (aUIN)
If GetUserIndex(aUIN, i) Then
With PicqDirectUser(fUL[i])^ Do
If DCRecvFile <> -1 then
DeleteDC(DCRecvFile);
Result := True;
End;
Procedure TicqDCM.StopFileSending(aUIN: LongWord);
Var
I:Integer;
Begin
// Stop File Sending;
If GetUserIndex(aUIN, i) then
With PicqDirectUser(fUL[i])^ Do
If DCSendFile <> -1 then Begin
TicqDCSendFile(fDCL[DCSendFile]).Stop;
Sleep(100);
DeleteDC(DCSendFile);
End;
End;
procedure TicqDCM.EstabilishConnection(aUIN: LongWord);
Var
i, i2: integer;
aDC:TicqDCNormal;
Begin
// Establish DCMain connection for User (aUIN)
If GetUserIndex(aUIN, i) then
With PicqDirectUser(fUL.Items[i])^ Do Begin
If IsConnected then Exit;
If fpUser^.IntIP + fpUser^.ExtIP = 0 then Exit;
if fpUser^.Port < 1025 Then Exit;
If DCMain <> -1 then
TicqDCNormal(fDCL.Items[DCMain]).Free;
aDC := TicqDCNormal.Create(aUIN, TMySocket.Create, False);
DCMain := fDCL.Add(aDC);
aDC.fpUser := PicqDirectUser(fUL.Items[i]);
aDC.fManager := Self;
aDC.fRemUIN := aUIN;
aDC.MyUIN := MyUIN;
aDC.fPort := FindBindPort;
// Proxy Settings
aDC.FProxyType := ProxyType;
aDC.FProxyHost := ProxyHost;
aDC.FProxyPort := ProxyPort;
aDC.FProxyAuth := ProxyAuth;
aDC.FProxyPass := ProxyPass;
aDC.FUserID := FUserID;
aDC.FResolve := FResolve;
aDC.UseProxyResolve := UseProxyResolve;
// Events
aDC.FOnError := InternalOnErrorProc;
aDC.FOnPktDump := InternalOnPktDump;
aDC.fOnHandle := InternalOnHandle;
aDC.fOnDCEvent := HandleDCEvent;
// Connect
aDC.Start;
Sleep(100);
If aDC.Client.Connected Then // If Socket is connecting then give up time and wait.
For i2 := 0 to 300 Do Begin
Sleep(10);
GiveUpCpuTime;
If IsConnected then Break;
End;
End;
End;
function TicqDCM.ConnectionEstabilished(aUIN: LongWord): Boolean;
Var
i:integer;
p:PicqDirectUser;
Begin
// Poll for DCMain Connection for User (aUIN), should open a DCMain
Result := False;
If GetUserIndex(aUIN, i) then Begin
P := PicqDirectUser(fUL.Items[i]);
Result := P^.IsConnected;
If Result Then
Exit;
// Attemp to Establish Connection
EstabilishConnection(aUIN); // Implements Connect On Demmand
Result := P^.IsConnected;
End;
End;
Procedure TicqDCM.DeleteUser(aUIN: LongWord);
Var
i:integer;
Begin
If GetUserIndex(aUIN, i) Then
With PicqDirectUser(fUL.Items[i])^ Do Begin
// Disconnect any connections
If DCChat <> -1 then
DeleteDC(DCChat);
If DCSendFile <> -1 then
DeleteDC(DCSendFile);
If DCRecvFile <> -1 then
DeleteDC(DCRecvFile);
If DCMain <> -1 then
DeleteDC(DCMain);
FreeMem(fUL.Items[i], SizeOf(TicqDirectUser));
fUL.Delete(i);
Exit;
End;
End;
Procedure TicqDCM.DeleteDC(Var aIndex:Integer);
Var
aDC:TicqBaseDC;
Begin
If (aIndex < 0) or (aIndex > (fDCL.Count -1))Then Begin
aIndex := -1;
Exit;
End;
aDC := TicqBaseDC(fDCL[aIndex]);
fDCL.Delete(aIndex);
aIndex := -1;
If aDC = nil then Exit;
With aDC Do
If CSck <> nil then
If CSck.Connected Then
CSck.Disconnect;
FreeAndNil(aDC);
End;
Function TicqDCM.GetUserIndex(aUIN:LongWord; Var Idx:integer):Boolean;
Var
i:Integer;
Begin
Result := False;
For i := 0 to fUL.Count -1 Do
If PicqDirectUser(fUL[i])^.UIN = aUIN then Begin
Idx := i;
Result := True;
Exit;
End;
End;
procedure TicqDCM.AddUser(aUIN, aCookie, aIPExt, aIPInt: LongWord; aPort: Word);
Var
i:integer;
p: PicqDirectUser;
Begin
If GetUserIndex(aUIN, i) then
With PicqDirectUser(fUL[i])^ Do Begin
Cookie := aCookie;
ExtIP := aIPExt;
IntIP := aIPExt;
Port := aPort;
IsConnected := False;
If DCChat <> -1 Then
DeleteDC(DCChat);
If DCSendFile <> -1 Then
DeleteDC(DCSendFile);
If DCRecvFile <> -1 Then
DeleteDC(DCRecvFile);
If DCMain <> -1 then
DeleteDC(DCMain);
Exit;
End;
GetMem(p, SizeOf(TicqDirectUser));
p^.UIN := aUin;
p^.Cookie := aCookie;
p^.ExtIP := aIPExt;
p^.IntIP := aIPInt;
p^.Port := aPort;
p^.IsConnected := False;
p^.DCMain := -1;
p^.DCRecvFile := -1;
p^.DCSendFile := -1;
p^.DCChat := -1;
fUL.Add(p);
End;
//****************************************************************************//
{ TicqBaseDC }
constructor TicqBaseDC.Create(aMyUIN: LongWord);
Begin
Inherited Create;
CSck := nil;
SSck := nil;
MyUin := aMyUIN;
OnDCEvent := nil;
OnError := nil;
OnHandle := nil;
OnPktDump := nil;
End;
destructor TicqBaseDC.Destroy;
Begin
Inherited Destroy;
Try
//CSck.Disconnect;
CSck.Free;
Except
End;
End;
Procedure TicqBaseDC.SetCSck(aSock:TMySocket);
Begin
If CSck = aSock then Exit;
If CSck <> nil then
CSck.Free;
CSck := aSock;
End;
Function TicqBaseDC.SendData(Pkt: PRawPkt):Boolean;
var
buf: array[0..$FFFF - 1] of Byte;
Begin
// Send Data
If CSck.Connected Then Begin
CSck.SendData(Pkt^.Len, 2);
CSck.SendData(Pkt^, Pkt^.Len);
Result := True;
End Else Begin
OnSockError(Self);
Result := False;
Exit;
End;
fpUser^.LastActivity := GetTickCount;
If Assigned(fOnPktDump) Then Begin
PWord(@buf)^ := Pkt^.Len;
Move(Pkt^.Data, Ptr(LongWord(@buf) + 2)^, Pkt^.Len);
fOnPktDump(Self, @Buf, Pkt^.Len + 2, False, fRemUIN);
End;
End;
procedure TicqBaseDC.OnSockError(Sender: TObject);
Begin
//fpUser^.IsConnected := False;
Try
If Sender is TMySocket then
With Sender as TMySocket do Begin
OnConnectError := Nil;
OnDisconnect := Nil;
OnError := Nil;
If Connected Then
Disconnect;
End;
Except
//Ignore any errors
End;
If fpUser^.DCMain <> -1 Then
If Sender = TicqBaseDC(fManager.fDCL[fpUser^.DCMain]).CSck then Begin
fManager.DeleteDC(fpUser^.DCMain);
fpUser^.IsConnected := False;
Exit;
End;
If fpUser^.DCRecvFile <> -1 then
If Sender = TicqBaseDC(fManager.fDCL[fpUser^.DCRecvFile]).CSck then Begin
fManager.DeleteDC(fpUser^.DCRecvFile);
Exit;
End;
If fpUser^.DCSendFile <> -1 then
If Sender = TicqBaseDC(fManager.fDCL[fpUser^.DCSendFile]).CSck then Begin
fManager.DeleteDC(fpUser^.DCSendFile);
Exit;
End;
If fpUser^.DCChat <> -1 then
If Sender = TicqBaseDC(fManager.fDCL[fpUser^.DCChat]).CSck then
fManager.DeleteDC(fpUser^.DCChat);
End;
procedure TicqBaseDC.OnSockConnectError(Sender: TObject);
Begin
OnSockError(Self);
End;
procedure TicqBaseDC.OnConnect(Sender: TObject);
Var
Pkt:TRawPkt;
Begin
If fIncoming then Begin
End Else
With fpUser^ DO Begin
LastActivity := GetTickCount;
CreatePEER_INIT(@pkt, Cookie, fRemUIN, MyUIN, fManager.fpUser^.Port, fManager.fpUser^.ExtIP, fManager.fpUser^.IntIP, CSck.ProxyType);
SendData(@pkt);
End;
End;
{Recieve data and packetize it, then send it to the subclass}
procedure TicqBaseDC.OnReceive(Sender: TObject; Socket: TSocket; Buffer: Pointer; BufLen: LongWord);
Var
i:integer;
Begin
fpUser^.LastActivity := GetTickCount;
If BufLen = 0 then Exit;
For i := 0 to BufLen -1 Do Begin
fDPkt.Data[fPktLen] := PByte(LongWord(Buffer) + LongWord(i))^;
Inc(fPktLen);
If fPktLen = 2 then Begin
fPktSize := PWord(@fDPkt)^;
If fPktSize > SizeOf(fDPkt.Data) Then Begin
OnIntError(Self, ERR_INTERNAL, RS_ERROR_BUFFEROVERRUN);
OnSockError(Self);
Exit;
End;
End;
If fPktLen = (fPktSize + 2) then Begin
fDPkt.Len := 0;
fPktSize := 0;
If Not HandlePacket(@fDPkt, fPktLen) Then
fManager.InternalOnHandle(Sender, fpUser^.UIN, @fDPkt, fDPkt.Len);
fPktLen := 0;
End;
End;
End;
procedure TicqBaseDC.OnIntPktDump(Sender: TObject; Buffer: Pointer; BufLen: LongWord; Incoming: Boolean; UIN: Cardinal);
Begin
If Assigned(fOnPktDump) Then
fOnPktDump(Sender, Buffer, BufLen, Incoming, UIN);
End;
procedure TicqBaseDC.OnIntError(Sender: TObject; ErrorType: TErrorType; ErrorMsg: String);
Begin
If Assigned(fOnError) Then
fOnError(Sender, ErrorType, ErrorMsg);
End;
Function TicqBaseDC.HandlePacket(pPkt: PRawPkt; PktLen:Integer):Boolean;
Var
i:Integer;
PktPos:Integer;
aPktLen:Integer;
lPkt:TRawPkt;
PrtVer, Port, Port2:Word;
CheckByte, PrxType:Byte;
UIN, aRemUIN, Cookie, ExtIP, IntIP:LongWord;
Begin
Result := False;
// Handle Incoming Packet;
PktPos := pPkt^.Len;
Try
If Assigned(fOnPktDump) Then
fOnPktDump(Self, pPkt, PktLen, True, fpUser^.UIN);
// Decode Packet Len and Command
aPktLen := GetLint(pPkt, 2);
Case GetInt(pPkt, 1) Of
PEER_INIT:
Begin
Try
// Get Data From Packet.
PrtVer := GetLInt(pPkt, 2);// ProtoVersion (WORD.L)