1 files changed, 81 insertions, 0 deletions
diff --git a/src/IteratableChecksumValidator.cc b/src/IteratableChecksumValidator.cc
new file mode 100644
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--- /dev/null
+++ b/src/IteratableChecksumValidator.cc
@@ -0,0 +1,81 @@
+/* <!-- 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 "IteratableChecksumValidator.h"
+#include "Util.h"
+#include "message.h"
+
+#define BUFSIZE 16*1024
+
+void IteratableChecksumValidator::validateChunk()
+{
+  if(!finished()) {
+    
+    char data[BUFSIZE];
+
+    int32_t size = _diskWriter->readData(data, sizeof(data), _currentOffset);
+
+    _ctx->digestUpdate(data, size);
+    _currentOffset += sizeof(data);    
+
+    if(finished()) {
+      unsigned char* digest = new unsigned char[_ctx->digestLength()];
+      try {
+	_ctx->digestFinal(digest);
+	if(_checksum->getMessageDigest() != Util::toHex(digest, _ctx->digestLength())) {
+	  _bitfield->clearAllBit();
+	}
+	delete [] digest;
+      } catch(...) {
+	delete [] digest;
+	throw;
+      }
+    }
+  }
+}
+
+bool IteratableChecksumValidator::canValidate() const
+{
+  // We assume file is already opened using DiskWriter::open or openExistingFile.
+  return !_checksum.isNull() && !_checksum->isEmpty();
+}
+
+void IteratableChecksumValidator::init()
+{
+  _bitfield->setAllBit();
+  _currentOffset = 0;
+
+  _ctx = new MessageDigestContext(_checksum->getDigestAlgo());
+  _ctx->digestInit();
+}