1 files changed, 59 insertions, 0 deletions
diff --git a/toolkit/components/url-classifier/nsCheckSummedOutputStream.cpp b/toolkit/components/url-classifier/nsCheckSummedOutputStream.cpp
new file mode 100644
index 000000000..68f9f1f6f
--- /dev/null
+++ b/toolkit/components/url-classifier/nsCheckSummedOutputStream.cpp
@@ -0,0 +1,59 @@
+//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
+/* This Source Code Form is subject to the terms of the Mozilla Public
+ * License, v. 2.0. If a copy of the MPL was not distributed with this
+ * file, You can obtain one at http://mozilla.org/MPL/2.0/. */
+
+#include "nsILocalFile.h"
+#include "nsCRT.h"
+#include "nsIFile.h"
+#include "nsISupportsImpl.h"
+#include "nsCheckSummedOutputStream.h"
+
+////////////////////////////////////////////////////////////////////////////////
+// nsCheckSummedOutputStream
+
+NS_IMPL_ISUPPORTS_INHERITED(nsCheckSummedOutputStream,
+                            nsSafeFileOutputStream,
+                            nsISafeOutputStream,
+                            nsIOutputStream,
+                            nsIFileOutputStream)
+
+NS_IMETHODIMP
+nsCheckSummedOutputStream::Init(nsIFile* file, int32_t ioFlags, int32_t perm,
+                                int32_t behaviorFlags)
+{
+  nsresult rv;
+  mHash = do_CreateInstance(NS_CRYPTO_HASH_CONTRACTID, &rv);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  rv = mHash->Init(nsICryptoHash::MD5);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return nsSafeFileOutputStream::Init(file, ioFlags, perm, behaviorFlags);
+}
+
+NS_IMETHODIMP
+nsCheckSummedOutputStream::Finish()
+{
+  nsresult rv = mHash->Finish(false, mCheckSum);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  uint32_t written;
+  rv = nsSafeFileOutputStream::Write(reinterpret_cast<const char*>(mCheckSum.BeginReading()),
+                                     mCheckSum.Length(), &written);
+  NS_ASSERTION(written == mCheckSum.Length(), "Error writing stream checksum");
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return nsSafeFileOutputStream::Finish();
+}
+
+NS_IMETHODIMP
+nsCheckSummedOutputStream::Write(const char *buf, uint32_t count, uint32_t *result)
+{
+  nsresult rv = mHash->Update(reinterpret_cast<const uint8_t*>(buf), count);
+  NS_ENSURE_SUCCESS(rv, rv);
+
+  return nsSafeFileOutputStream::Write(buf, count, result);
+}
+
+////////////////////////////////////////////////////////////////////////////////