Added 64-bit ack option to DCC receive.

5 files changed, 47 insertions, 45 deletions

diff --git a/src/kvirc/kernel/KviOptions.cpp b/src/kvirc/kernel/KviOptions.cpp
index 0c71f7a7b..d9064be43 100644
--- a/src/kvirc/kernel/KviOptions.cpp
+++ b/src/kvirc/kernel/KviOptions.cpp
@@ -340,7 +340,8 @@ KviBoolOption g_boolOptionsTable[KVI_NUM_BOOL_OPTIONS]=
 	BOOL_OPTION("ShowUserFlagForChannelsInWindowList",true,KviOption_sectFlagWindowList | KviOption_resetUpdateGui),
 	BOOL_OPTION("EnableCustomCursorWidth",false,KviOption_sectFlagGui | KviOption_resetUpdateGui),
 	BOOL_OPTION("ShowFavoriteServersOnly",false,KviOption_sectFlagFrame),
-	BOOL_OPTION("RequireControlToCopy",false,KviOption_sectFlagIrcView)
+	BOOL_OPTION("RequireControlToCopy",false,KviOption_sectFlagIrcView),
+	BOOL_OPTION("Send64BitAckInDccRecv",false,KviOption_sectFlagDcc)
 };
 
 #define STRING_OPTION(_txt,_val,_flags) KviStringOption(KVI_STRING_OPTIONS_PREFIX _txt,_val,_flags)
diff --git a/src/kvirc/kernel/KviOptions.h b/src/kvirc/kernel/KviOptions.h
index f230df05a..ab72e60b3 100644
--- a/src/kvirc/kernel/KviOptions.h
+++ b/src/kvirc/kernel/KviOptions.h
@@ -356,8 +356,9 @@ DECLARE_OPTION_STRUCT(KviStringListOption,QStringList)
 #define KviOption_boolEnableCustomCursorWidth 261                          /* interface */
 #define KviOption_boolShowFavoriteServersOnly 262                        /* connection::ircservers */
 #define KviOption_boolRequireControlToCopy 263                           /* interface::ircview */
+#define KviOption_boolSend64BitAckInDccRecv 264                          /* dcc::send */
 
-#define KVI_NUM_BOOL_OPTIONS 264
+#define KVI_NUM_BOOL_OPTIONS 265
 
 
 #define KVI_STRING_OPTIONS_PREFIX "string"
diff --git a/src/modules/dcc/DccFileTransfer.cpp b/src/modules/dcc/DccFileTransfer.cpp
index d404f85a7..536c8d7cd 100644
--- a/src/modules/dcc/DccFileTransfer.cpp
+++ b/src/modules/dcc/DccFileTransfer.cpp
@@ -68,6 +68,7 @@
 #include <QEvent>
 #include <QCloseEvent>
 #include <QTimer>
+#include <QtEndian>
 
 #define INSTANT_BANDWIDTH_CHECK_INTERVAL_IN_MSECS 3000
 #define INSTANT_BANDWIDTH_CHECK_INTERVAL_IN_SECS 3
@@ -112,22 +113,29 @@ DccRecvThread::~DccRecvThread()
 	delete m_pTimeInterval;
 }
 
-bool DccRecvThread::sendAck(int filePos,bool bTolerateErrors)
+bool DccRecvThread::sendAck(qint64 filePos, bool bUse64BitAck)
 {
-	quint32 size = htonl(filePos & 0xffffffff);
+	quint32 ack32 = htonl(filePos & 0xffffffff);
+	quint64 ack64 = qToBigEndian(filePos);
+
+	char * ack = (char*) &ack32;
+	int ackSize = 4;
+
+	if(bUse64BitAck)
+	{
+		ackSize = 8;
+		ack = (char*) &ack64;
+	}
+
 	int iRet=0;
 #ifdef COMPILE_SSL_SUPPORT
 	if(m_pSSL)
-	{
-		iRet = m_pSSL->write((char*)(&size),4);
-	} else {
-#endif //COMPILE_SSL_SUPPORT
-		iRet = kvi_socket_send(m_fd,(void *)(&size),4);
-#ifdef COMPILE_SSL_SUPPORT
-	}
+		iRet = m_pSSL->write(ack,ackSize);
+	else
 #endif //COMPILE_SSL_SUPPORT
+		iRet = kvi_socket_send(m_fd,(void *)(ack),ackSize);
 
-	if(iRet == 4)
+	if(iRet == ackSize)
 		return true; // everything sent
 
 	// When downloading from a fast server using send-ahead via an asymmetric link (such as the
@@ -147,9 +155,6 @@ bool DccRecvThread::sendAck(int filePos,bool bTolerateErrors)
 
 	if(iRet < 0)
 	{
-		if(bTolerateErrors)
-			return true; // ignore at all
-
 		// Reported error. If it's EAGAIN or EINTR then no data has been sent.
 #ifdef COMPILE_SSL_SUPPORT
 		if(m_pSSL)
@@ -196,24 +201,17 @@ bool DccRecvThread::sendAck(int filePos,bool bTolerateErrors)
 	// This will probably throttle the bandwidth usage a bit too.
 	msleep(10);
 
-	int iMissingPart = 4 - iRet;
+	int iMissingPart = ackSize - iRet;
 
 #ifdef COMPILE_SSL_SUPPORT
 	if(m_pSSL)
-	{
-		iRet = m_pSSL->write(((char*)(&size)) + iRet,iMissingPart);
-	} else {
-#endif //COMPILE_SSL_SUPPORT
-		iRet = kvi_socket_send(m_fd,(void *)(((char *)(&size)) + iRet),iMissingPart);
-#ifdef COMPILE_SSL_SUPPORT
-	}
+		iRet = m_pSSL->write(ack + iRet,iMissingPart);
+	else
 #endif //COMPILE_SSL_SUPPORT
+		iRet = kvi_socket_send(m_fd,(void *)(ack + iRet),iMissingPart);
 
 	if(iRet != iMissingPart)
 	{
-		if(bTolerateErrors)
-			return true; // ignore at all
-
 		// Crap.. couldn't send the missing part of the ack :/
 		postErrorEvent(KviError::AcknowledgeError);
 		return false;
@@ -290,6 +288,8 @@ void DccRecvThread::run()
 
 	m_pFile = new QFile(QString::fromUtf8(m_pOpt->szFileName.ptr()));
 
+	bool bSend64BitAck = m_pOpt->bSend64BitAck && (m_pOpt->uTotalFileSize >> 32);
+
 	if(m_pOpt->bResume)
 	{
 		if(!m_pFile->open(QIODevice::WriteOnly | QIODevice::Append))
@@ -307,7 +307,7 @@ void DccRecvThread::run()
 
 	if(m_pOpt->bSendZeroAck && (!m_pOpt->bNoAcks))
 	{
-		if(!sendAck(m_pFile->pos(),false))
+		if(!sendAck(m_pFile->pos(),bSend64BitAck))
 			goto exit_dcc;
 	}
 
@@ -407,14 +407,7 @@ void DccRecvThread::run()
 						} else {
 							// Must send the ack... the peer must close the connection
 
-							// We tolerate ack errors if we're in the last 90% of the file.
-							// It might be that we're slow with receiving data but the server
-							// has already closed the connection (buggy server though).
-
-							bool bTolerateErrors = (m_pOpt->uTotalFileSize > 0) &&
-								(((quint64)m_pFile->pos()) >= (m_pOpt->uTotalFileSize - (m_pOpt->uTotalFileSize / 10)));
-
-							if(!sendAck(m_pFile->pos(),bTolerateErrors))
+							if(!sendAck(m_pFile->pos(),bSend64BitAck))
 								break;
 						}
 
@@ -2119,6 +2112,7 @@ void DccFileTransfer::connected()
 		o->iIdleStepLengthInMSec = KVI_OPTION_BOOL(KviOption_boolDccSendForceIdleStep) ? KVI_OPTION_UINT(KviOption_uintDccSendIdleStepInMSec) : 0;
 		o->bIsTdcc         = m_pDescriptor->bIsTdcc;
 		o->bSendZeroAck    = KVI_OPTION_BOOL(KviOption_boolSendZeroAckInDccRecv);
+		o->bSend64BitAck   = KVI_OPTION_BOOL(KviOption_boolSend64BitAckInDccRecv);
 		o->bNoAcks         = m_pDescriptor->bNoAcks;
 		o->uMaxBandwidth   = m_uMaxBandwidth;
 		m_pSlaveRecvThread = new DccRecvThread(this,m_pMarshal->releaseSocket(),o);
diff --git a/src/modules/dcc/DccFileTransfer.h b/src/modules/dcc/DccFileTransfer.h
index fea2d6467..d8f9cb11d 100644
--- a/src/modules/dcc/DccFileTransfer.h
+++ b/src/modules/dcc/DccFileTransfer.h
@@ -53,7 +53,7 @@ class QMenu;
 
 typedef struct _KviDccSendThreadOptions
 {
-	KviCString       szFileName;
+	KviCString   szFileName;
 	quint64      uStartPosition;
 	int          iPacketSize;
 	int          iIdleStepLengthInMSec;
@@ -101,10 +101,11 @@ protected:
 typedef struct _KviDccRecvThreadOptions
 {
 	bool         bResume;
-	KviCString       szFileName;
+	KviCString   szFileName;
 	quint64      uTotalFileSize;
 	int          iIdleStepLengthInMSec;
 	bool         bSendZeroAck;
+	bool         bSend64BitAck;
 	bool         bNoAcks;
 	bool         bIsTdcc;
 	unsigned int uMaxBandwidth;
@@ -127,7 +128,7 @@ protected:
 	// internal
 	unsigned long         m_uStartTime;
 	KviMSecTimeInterval * m_pTimeInterval;             // used for computing the instant bandwidth
-	quint64              m_uInstantReceivedBytes;
+	quint64               m_uInstantReceivedBytes;
 	quint64               m_uInstantSpeedInterval;
 	QFile               * m_pFile;
 public:
@@ -143,7 +144,7 @@ public:
 protected:
 	void postMessageEvent(const char * msg);
 	void updateStats();
-	bool sendAck(int filePos,bool bTolerateErrors = false);
+	bool sendAck(qint64 filePos, bool bUse64BitAck = false);
 	virtual void run();
 };
 
@@ -174,13 +175,13 @@ public:
 	DccFileTransfer(DccDescriptor * dcc);
 	~DccFileTransfer();
 private:
-	DccSendThread       * m_pSlaveSendThread;
-	DccRecvThread       * m_pSlaveRecvThread;
-	DccDescriptor       * m_pDescriptor;
-	DccMarshal          * m_pMarshal;
+	DccSendThread          * m_pSlaveSendThread;
+	DccRecvThread          * m_pSlaveRecvThread;
+	DccDescriptor          * m_pDescriptor;
+	DccMarshal             * m_pMarshal;
 
-	KviCString                   m_szTarget;
-	KviCString                   m_szDccType;
+	KviCString               m_szTarget;
+	KviCString               m_szDccType;
 	QString                  m_szTransferIdString;
 
 	QString                  m_szStatusString;
diff --git a/src/modules/options/OptionsWidget_dcc.cpp b/src/modules/options/OptionsWidget_dcc.cpp
index 28564cb24..9674351ee 100644
--- a/src/modules/options/OptionsWidget_dcc.cpp
+++ b/src/modules/options/OptionsWidget_dcc.cpp
@@ -235,6 +235,11 @@ OptionsWidget_dccSendAdvanced::OptionsWidget_dccSendAdvanced(QWidget * parent)
 		__tr2qs_ctx("<center>This option causes KVIrc to replace spaces with underscores in filenames " \
 				"for all the outgoing file transfers. This will fix filename handling with some buggy clients (e.g. some versions of mIRC).","options"));
 
+       b = addBoolSelector(g,__tr2qs_ctx("Send 64-bit ACKs for files larger than 4GiB","options"),KviOption_boolSend64BitAckInDccRecv);
+       mergeTip(b,
+               __tr2qs_ctx("<center>This option causes KVIrc to send ACKs as 64-bit integers instead of 32-bit integers<br>" \
+                               "Use this to fix DCC RECEIVE transfers where the other client is using the mIRC ACK standard.</center>","options"));
+
 	g = addGroupBox(0,1,0,1,Qt::Horizontal,__tr2qs_ctx("Limits","options"));
 
 	KviTalHBox * hb = new KviTalHBox(g);