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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set ts=8 sts=2 et sw=2 tw=80: */
/* 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 "DecryptingInputStream.h"
#include "DecryptingInputStream_impl.h"
#include "nsStreamUtils.h"
namespace mozilla::dom::quota {
NS_IMPL_ADDREF(DecryptingInputStreamBase);
NS_IMPL_RELEASE(DecryptingInputStreamBase);
NS_INTERFACE_MAP_BEGIN(DecryptingInputStreamBase)
NS_INTERFACE_MAP_ENTRY(nsIInputStream)
NS_INTERFACE_MAP_ENTRY(nsISeekableStream)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(nsICloneableInputStream,
mBaseCloneableInputStream || !mBaseStream)
NS_INTERFACE_MAP_ENTRY_CONDITIONAL(
nsIIPCSerializableInputStream,
mBaseIPCSerializableInputStream || !mBaseStream)
NS_INTERFACE_MAP_ENTRY_AMBIGUOUS(nsISupports, nsIInputStream)
NS_INTERFACE_MAP_END
DecryptingInputStreamBase::DecryptingInputStreamBase(
MovingNotNull<nsCOMPtr<nsIInputStream>> aBaseStream, size_t aBlockSize) {
Init(std::move(aBaseStream), aBlockSize);
}
void DecryptingInputStreamBase::Init(
MovingNotNull<nsCOMPtr<nsIInputStream>> aBaseStream, size_t aBlockSize) {
mBlockSize.init(aBlockSize);
mBaseStream.init(std::move(aBaseStream));
const nsCOMPtr<nsISeekableStream> seekableStream =
do_QueryInterface(mBaseStream->get());
MOZ_ASSERT(seekableStream &&
SameCOMIdentity(mBaseStream->get(), seekableStream));
mBaseSeekableStream.init(WrapNotNullUnchecked(seekableStream));
const nsCOMPtr<nsICloneableInputStream> cloneableInputStream =
do_QueryInterface(mBaseStream->get());
if (cloneableInputStream &&
SameCOMIdentity(mBaseStream->get(), cloneableInputStream)) {
mBaseCloneableInputStream.init(WrapNotNullUnchecked(cloneableInputStream));
}
const nsCOMPtr<nsIIPCSerializableInputStream> ipcSerializeInputStream =
do_QueryInterface(mBaseStream->get());
if (ipcSerializeInputStream &&
SameCOMIdentity(mBaseStream->get(), ipcSerializeInputStream)) {
mBaseIPCSerializableInputStream.init(
WrapNotNullUnchecked(ipcSerializeInputStream));
}
}
NS_IMETHODIMP DecryptingInputStreamBase::Read(char* aBuf, uint32_t aCount,
uint32_t* aBytesReadOut) {
return ReadSegments(NS_CopySegmentToBuffer, aBuf, aCount, aBytesReadOut);
}
NS_IMETHODIMP DecryptingInputStreamBase::IsNonBlocking(bool* aNonBlockingOut) {
*aNonBlockingOut = false;
return NS_OK;
}
NS_IMETHODIMP DecryptingInputStreamBase::SetEOF() {
// Cannot truncate a read-only stream.
return NS_ERROR_NOT_IMPLEMENTED;
}
NS_IMETHODIMP DecryptingInputStreamBase::GetCloneable(bool* aCloneable) {
*aCloneable = true;
return NS_OK;
}
void DecryptingInputStreamBase::SerializedComplexity(uint32_t aMaxSize,
uint32_t* aSizeUsed,
uint32_t* aPipes,
uint32_t* aTransferables) {
(*mBaseIPCSerializableInputStream)
->SerializedComplexity(aMaxSize, aSizeUsed, aPipes, aTransferables);
}
size_t DecryptingInputStreamBase::PlainLength() const {
MOZ_ASSERT(mNextByte <= mPlainBytes);
return mPlainBytes - mNextByte;
}
size_t DecryptingInputStreamBase::EncryptedBufferLength() const {
return *mBlockSize;
}
} // namespace mozilla::dom::quota
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