2007-08-08 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

MessageDigestHelper is introduced in order to simplify the use
	of message digest. Removed repeated code.
	The message digest algorithm is now specified by string, like 
"sha1",
	"md5".
	* src/messageDigest.{h, cc}
	* src/MessageDigestHelper.{h, cc}: New class.
	* src/DefaultPieceStorage.cc
	* src/DefaultBtContext.{h, cc}
	(computeFastSet): New function.
	(setInfoHash): Added for unit testing.
	(setNumPieces): Added for unit testing.
	* src/DefaultBtInteractive.cc
	* src/BtPieceMessage.cc
	* src/Peer.cc
	* src/Checksum.h
	* src/message.h
	* src/IteratableChecksumValidator.h
	* src/ChunkChecksumValidator.{h, cc}: Use 
IteratableChecksumValidator
	inside it.
	* src/SegmentMan.{h, cc}
	(checkIntegrity): Removed.
	* src/IteratableChunkChecksumValidator.{h, cc}
	* src/Util.h
	(sha1Sum): Removed.
	(simpleMessageDigest): Removed.
	(fileChecksum): Removed.
	(computeFastSet): Removed.
	* src/ShaVisitor.cc
	* src/ChunkChecksum.h
	* src/DownloadCommand.cc

	Removed messageDigest virtual functions.
	* src/MultiDiskAdaptor.{h, cc}
	* src/DiskAdaptor.h
	* src/ByteArrayDiskWriter.h
	* src/DiskWriter.h
	* src/DiskAdaptorWriter.h
	* src/AbstractSingleDiskAdaptor.{h, cc}
	* src/AbstractDiskWriter.{h, cc}
	
	Fixed comilation error when message digest is disabled.
	* src/MetalinkEntry.{h, cc}
	* src/MetalinkRequestInfo.cc
	
	Removed srandom and random.
	* src/SimpleRandomizer.h

	Added size() virtual function to DiskAdaptor
	* src/MultiDiskAdaptor.h

	Fixed the bug that causes that files are not opened correctly in
	multi-file torrent.
	* src/TorrentRequestInfo.cc
	* src/MultiDiskAdaptor.cc
	
	Added SHA256 support
	* src/messageDigest.cc
	* src/Xml2MetalinkProcessor.cc

	Show supported message digest algorithms
	* src/main.cc

	Updated contact info.
	* src/main.cc

test/DefaultBtRequestFactoryTest.cc

@@ -55,6 +55,24 @@ public:
     }
   };
 
+  class SortMockBtRequestMessage {
+  public:
+    bool operator()(const SharedHandle<MockBtRequestMessage>& a,
+		    const SharedHandle<MockBtRequestMessage>& b) {
+      if(a->index < b->index) {
+	return true;
+      } else if(b->index < a->index) {
+	return false;
+      } else if(a->blockIndex < b->blockIndex) {
+	return true;
+      } else if(b->blockIndex < a->blockIndex) {
+	return false;
+      } else {
+	return true;
+      }
+    }
+  };
+
   void setUp() {
     BtRegistry::clear();
     btContext = new MockBtContext();
@@ -142,6 +160,8 @@ void DefaultBtRequestFactoryTest::testCreateRequestMessages_onEndGame() {
 
   BtMessages msgs = btRequestFactory->createRequestMessagesOnEndGame(3);
 
+  sort(msgs.begin(), msgs.end(), SortMockBtRequestMessage());
+
   CPPUNIT_ASSERT_EQUAL((size_t)3, msgs.size());
   BtMessages::iterator itr = msgs.begin();
   MockBtRequestMessage* msg = (MockBtRequestMessage*)itr->get();
@@ -150,11 +170,11 @@ void DefaultBtRequestFactoryTest::testCreateRequestMessages_onEndGame() {
   ++itr;
   msg = (MockBtRequestMessage*)itr->get();
   CPPUNIT_ASSERT_EQUAL(1, msg->index);
-  CPPUNIT_ASSERT_EQUAL(1, msg->blockIndex);
+  CPPUNIT_ASSERT_EQUAL(0, msg->blockIndex);
   ++itr;
   msg = (MockBtRequestMessage*)itr->get();
   CPPUNIT_ASSERT_EQUAL(1, msg->index);
-  CPPUNIT_ASSERT_EQUAL(0, msg->blockIndex);
+  CPPUNIT_ASSERT_EQUAL(1, msg->blockIndex);
 }
 
 void DefaultBtRequestFactoryTest::testRemoveTargetPiece() {