2007-11-12 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	Implemented checksum validation feature(1 checksum for each 
file)
	The validation takes place after the download.
	* src/PieceHashCheckIntegrityEntry.{h, cc}: New class.
	* src/IteratableChecksumValidator.{h, cc}: Rewritten.
	* src/CheckIntegrityCommand.cc: Changed log message.
	* src/Metalink2RequestGroup.cc: Set checksum to
	SingleFileDownloadContext.
	* src/StreamCheckIntegrityEntry.{h, cc}: Now derived from
	PieceHashCheckIntegrity class.
	* src/BtCheckIntegrityEntry.{h, cc}: Now derived from
	PieceHashCheckIntegrity class.
	* src/ChecksumCheckIntegrityEntry.{h, cc}: New class.
	* src/IteratableValidator.h: New class.
	* src/message.h
	* src/CheckIntegrityEntry.{h, cc}
	* src/IteratableChunkChecksumValidator.{h, cc}
	* src/SingleFileDownloadContext.h
	* src/DownloadCommand.cc
	
	--allow-overwrite=true is no longer needed to check file 
integrity
	before download in BitTorrent download.
	* src/RequestGroup.cc (getInitialCommand)

	Removed RequestGroup from queue when 
RequestGroup::getInitialCommand()
	throws exception.
	* src/RequestGroupMan.cc (getInitialCommands)
	

1 files changed, 61 insertions, 0 deletions

diff --git a/src/PieceHashCheckIntegrityEntry.cc b/src/PieceHashCheckIntegrityEntry.cc
new file mode 100644
index 00000000..dcc45565
--- /dev/null
+++ b/src/PieceHashCheckIntegrityEntry.cc
@@ -0,0 +1,61 @@
+/* <!-- copyright */
+/*
+ * aria2 - The high speed download utility
+ *
+ * Copyright (C) 2006 Tatsuhiro Tsujikawa
+ *
+ * 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.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301  USA
+ *
+ * In addition, as a special exception, the copyright holders give
+ * permission to link the code of portions of this program with the
+ * OpenSSL library under certain conditions as described in each
+ * individual source file, and distribute linked combinations
+ * including the two.
+ * You must obey the GNU General Public License in all respects
+ * for all of the code used other than OpenSSL.  If you modify
+ * file(s) with this exception, you may extend this exception to your
+ * version of the file(s), but you are not obligated to do so.  If you
+ * do not wish to do so, delete this exception statement from your
+ * version.  If you delete this exception statement from all source
+ * files in the program, then also delete it here.
+ */
+/* copyright --> */
+#include "PieceHashCheckIntegrityEntry.h"
+#include "Command.h"
+#include "RequestGroup.h"
+#include "IteratableChunkChecksumValidator.h"
+#include "DownloadContext.h"
+#include "PieceStorage.h"
+
+PieceHashCheckIntegrityEntry::PieceHashCheckIntegrityEntry(RequestGroup* requestGroup,
+							   Command* nextCommand):
+  CheckIntegrityEntry(requestGroup, nextCommand) {}
+
+PieceHashCheckIntegrityEntry::~PieceHashCheckIntegrityEntry() {}
+
+bool PieceHashCheckIntegrityEntry::isValidationReady()
+{
+  DownloadContextHandle dctx = _requestGroup->getDownloadContext();
+  return dctx->getPieceHashes().size() > 0 &&
+    dctx->getPieceHashes().size() == (uint32_t)dctx->getNumPieces();
+}
+
+void PieceHashCheckIntegrityEntry::initValidator()
+{
+  IteratableChunkChecksumValidatorHandle validator =
+    new IteratableChunkChecksumValidator(_requestGroup->getDownloadContext(),
+					 _requestGroup->getPieceStorage());
+  _validator = validator;
+}