kopete: Restore the MSN protocol because a replacement MSN server was created.

This reverts commits 0486034738 - 2d5f9c55da and f6fd4ab6c0.

Signed-off-by: Slávek Banko <[email protected]>

1 files changed, 151 insertions, 0 deletions

diff --git a/kopete/protocols/msn/msnchallengehandler.cpp b/kopete/protocols/msn/msnchallengehandler.cpp
new file mode 100644
index 00000000..5492b9e7
--- /dev/null
+++ b/kopete/protocols/msn/msnchallengehandler.cpp
@@ -0,0 +1,151 @@
+/*
+    msnchallengehandler.h - Computes a msn challenge response hash key.
+
+    Copyright (c) 2005 by Gregg Edghill       <[email protected]>
+    Kopete    (c) 2003-2005 by The Kopete developers <[email protected]>
+
+    Portions taken from
+    	http://msnpiki.msnfanatic.com/index.php/MSNP11:Challenges
+
+    *************************************************************************
+    *                                                                       *
+    * This program is free software; you can redistribute it and/or modify  *
+    * it under the terms of the GNU General Public License as published by  *
+    * the Free Software Foundation; either version 2 of the License, or     *
+    * (at your option) any later version.                                   *
+    *                                                                       *
+    *************************************************************************
+*/
+
+#include "msnchallengehandler.h"
+
+#include <tqdatastream.h>
+
+#include <kdebug.h>
+#include <kmdcodec.h>
+
+MSNChallengeHandler::MSNChallengeHandler(const TQString& productKey, const TQString& productId)
+{
+	m_productKey = productKey;
+	m_productId  = productId;
+}
+
+
+MSNChallengeHandler::~MSNChallengeHandler()
+{
+	kdDebug(14140) << k_funcinfo << endl;
+}
+
+TQString MSNChallengeHandler::computeHash(const TQString& challengeString)
+{
+  	// Step One: THe MD5 Hash.
+
+  	// Combine the received challenge string with the product key.
+ 	KMD5 md5((challengeString + m_productKey).utf8());
+ 	TQCString digest = md5.hexDigest();
+
+ 	kdDebug(14140) << k_funcinfo << "md5: " << digest << endl;
+
+ 	TQValueVector<TQ_INT32> md5Integers(4);
+ 	for(TQ_UINT32 i=0; i < md5Integers.count(); i++)
+ 	{
+ 		md5Integers[i] = hexSwap(digest.mid(i*8, 8)).toUInt(0, 16) & 0x7FFFFFFF;
+ 		kdDebug(14140) << k_funcinfo << ("0x" + hexSwap(digest.mid(i*8, 8))) << " " << md5Integers[i] << endl;
+ 	}
+
+	// Step Two: Create the challenge string key
+
+	TQString challengeKey = challengeString + m_productId;
+	// Pad to multiple of 8.
+	challengeKey = challengeKey.leftJustify(challengeKey.length() + (8 - challengeKey.length() % 8), '0');
+
+	kdDebug(14140) << k_funcinfo << "challenge key: " << challengeKey << endl;
+
+	TQValueVector<TQ_INT32> challengeIntegers(challengeKey.length() / 4);
+	for(TQ_UINT32 i=0; i < challengeIntegers.count(); i++)
+	{
+		TQString sNum = challengeKey.mid(i*4, 4), sNumHex;
+
+		// Go through the number string, determining the hex equivalent of each value
+		// and add that to our new hex string for this number.
+		for(uint j=0; j < sNum.length(); j++) {
+			sNumHex += TQString::number((int)sNum[j].latin1(), 16);
+		}
+
+		// swap because of the byte ordering issue.
+		sNumHex = hexSwap(sNumHex);
+		// Assign the converted number.
+		challengeIntegers[i] = sNumHex.toInt(0, 16);
+		kdDebug(14140) << k_funcinfo << sNum << (": 0x"+sNumHex) << " " << challengeIntegers[i] << endl;
+	}
+
+	// Step Three: Create the 64-bit hash key.
+
+	// Get the hash key using the specified arrays.
+	TQ_INT64 key = createHashKey(md5Integers, challengeIntegers);
+	kdDebug(14140) << k_funcinfo << "key: " << key << endl;
+
+	// Step Four: Create the final hash key.
+
+	TQString upper = TQString::number(TQString(digest.mid(0, 16)).toULongLong(0, 16)^key, 16);
+	if(upper.length() % 16 != 0)
+		upper = upper.rightJustify(upper.length() + (16 - upper.length() % 16), '0');
+
+	TQString lower = TQString::number(TQString(digest.mid(16, 16)).toULongLong(0, 16)^key, 16);
+	if(lower.length() % 16 != 0)
+		lower = lower.rightJustify(lower.length() + (16 - lower.length() % 16), '0');
+
+	return (upper + lower);
+}
+
+TQ_INT64 MSNChallengeHandler::createHashKey(const TQValueVector<TQ_INT32>& md5Integers,
+	const TQValueVector<TQ_INT32>& challengeIntegers)
+{
+	kdDebug(14140) << k_funcinfo << "Creating 64-bit key." << endl;
+
+	TQ_INT64 magicNumber = 0x0E79A9C1L, high = 0L, low = 0L;
+		
+	for(uint i=0; i < challengeIntegers.count(); i += 2)
+	{
+		TQ_INT64 temp = ((challengeIntegers[i] * magicNumber) % 0x7FFFFFFF) + high;
+		temp = ((temp * md5Integers[0]) + md5Integers[1]) % 0x7FFFFFFF;
+
+		high = (challengeIntegers[i + 1] + temp) % 0x7FFFFFFF;
+		high = ((high * md5Integers[2]) + md5Integers[3]) % 0x7FFFFFFF;
+
+		low += high + temp;
+	}
+
+	high = (high + md5Integers[1]) % 0x7FFFFFFF;
+	low  = (low  + md5Integers[3]) % 0x7FFFFFFF;
+
+	TQDataStream buffer(TQByteArray(8), IO_ReadWrite);
+	buffer.setByteOrder(TQDataStream::LittleEndian);
+	buffer << (TQ_INT32)high;
+	buffer << (TQ_INT32)low;
+
+	buffer.device()->reset();
+	buffer.setByteOrder(TQDataStream::BigEndian);
+	TQ_INT64 key;
+	buffer >> key;
+	
+	return key;
+}
+
+TQString MSNChallengeHandler::hexSwap(const TQString& in)
+{
+	TQString sHex = in, swapped;
+	while(sHex.length() > 0)
+	{
+		swapped = swapped + sHex.mid(sHex.length() - 2, 2);
+		sHex = sHex.remove(sHex.length() - 2, 2);
+	}
+	return swapped;
+}
+
+TQString MSNChallengeHandler::productId()
+{
+	return m_productId;
+}
+
+#include "msnchallengehandler.moc"