2007-06-01 Tatsuhiro Tsujikawa <tujikawa at rednoah dot com>

	* src/FileAllocationCommand.cc: Derived from RealtimeCommand.
	* src/CheckIntegrityCommand.cc: Derived from RealtimeCommand.
	
	* src/MetalinkEntry.h
	(checksum): Changed to ChecksumHandle
	* src/MetalinkRequestInfo.cc
	(checksum): Changed to ChecksumHandle

	* src/File.cc
	(mkdirs): OPEN_MODE -> DIR_OPEN_MODE
	* src/common.h
	(DIR_OPEN_MODE): New definition

	* src/RequestGroup.cc
	(prepareForNextAction): Added an argument.

	* src/message.h
	(MSG_GOOD_CHECKSUM): New definition
	(MSG_BAD_CHECKSUM): New definition

	* src/HttpResponseCommand.cc
	(handleDefaultEncoding): Continue download sequence in new
	non-segmented download.

	* src/FileAllocationEntry.h
	(_nextDownloadCommand): New variable.

	* src/DownloadCommand.cc
	(prepareForNextSegment): Create ChecksumCommand if checksum is
	available.	

	* src/RealtimeCommand.h, src/RealtimeCommand.cc: New class.

	* src/IteratableChecksumValidator.h,
	src/IteratableChecksumValidator.cc: New class.

	* src/ChecksumCommand.h, src/ChecksumCommand.cc: New class.

1 files changed, 79 insertions, 0 deletions

diff --git a/src/ChecksumCommand.cc b/src/ChecksumCommand.cc
new file mode 100644
index 00000000..dcfdc0bb
--- /dev/null
+++ b/src/ChecksumCommand.cc
@@ -0,0 +1,79 @@
+/* <!-- 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 "ChecksumCommand.h"
+#include "DlAbortEx.h"
+#include "message.h"
+
+void ChecksumCommand::initValidator()
+{
+  _validator = new IteratableChecksumValidator();
+  _validator->setChecksum(_requestGroup->getChecksum());
+  _validator->setDiskWriter(_requestGroup->getSegmentMan()->diskWriter);
+  _validator->setBitfield(_requestGroup->getSegmentMan()->getBitfield());
+  if(!_validator->canValidate()) {
+    // insufficient checksums.
+    throw new DlAbortEx("Insufficient checksums.");
+  }
+  _validator->init();
+}
+
+bool ChecksumCommand::executeInternal()
+{
+  _validator->validateChunk();
+  if(_validator->finished()) {
+    if(_requestGroup->downloadFinished()) {
+      logger->notice(MSG_GOOD_CHECKSUM, cuid, _requestGroup->getFilePath().c_str());
+      return true;
+    } else {
+      logger->error(MSG_BAD_CHECKSUM, cuid, _requestGroup->getFilePath().c_str());
+      return true;
+    }
+  } else {
+    _e->commands.push_back(this);
+    return false;
+  }
+
+}
+
+bool ChecksumCommand::handleException(Exception* e)
+{
+  logger->error("CUID#%d - Exception caught while validating file integrity.", e, cuid);
+  delete e;
+  logger->error(MSG_DOWNLOAD_NOT_COMPLETE, cuid, _requestGroup->getFilePath().c_str());
+  // TODO We need to set bitfield back to the state when validation begun.
+  // The one of the solution is having a copy of bitfield before settting its
+  // all bit to 1. If exception is thrown, then assign the copy to the bitfield.
+  return true;
+}