forked from mirrors/gecko-dev
8ad76c7e47
Depends on D66008 Differential Revision: https://phabricator.services.mozilla.com/D66010 --HG-- extra : moz-landing-system : lando
88 lines
2.7 KiB
C++
88 lines
2.7 KiB
C++
//* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
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/* This Source Code Form is subject to the terms of the Mozilla Public
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* License, v. 2.0. If a copy of the MPL was not distributed with this
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* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
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#ifndef nsCheckSummedOutputStream_h__
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#define nsCheckSummedOutputStream_h__
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#include "nsIFile.h"
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#include "nsIOutputStream.h"
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#include "nsICryptoHash.h"
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#include "nsNetCID.h"
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#include "nsNetUtil.h"
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#include "nsString.h"
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#include "../../../netwerk/base/nsBufferedStreams.h"
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#include "prio.h"
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class nsCheckSummedOutputStream : public nsBufferedOutputStream {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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// Size of MD5 hash in bytes
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static const uint32_t CHECKSUM_SIZE = 16;
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static const uint32_t MAX_BUFFER_SIZE = 64 * 1024;
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nsCheckSummedOutputStream() = default;
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NS_IMETHOD Finish() override;
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NS_IMETHOD Write(const char* buf, uint32_t count, uint32_t* result) override;
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NS_IMETHOD Init(nsIOutputStream* stream, uint32_t bufferSize) override;
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protected:
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virtual ~nsCheckSummedOutputStream() { nsBufferedOutputStream::Close(); }
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nsCOMPtr<nsICryptoHash> mHash;
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nsCString mCheckSum;
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};
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// returns a file output stream which can be QI'ed to nsIFileOutputStream.
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inline nsresult NS_NewCheckSummedOutputStream(nsIOutputStream** result,
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nsIFile* file) {
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nsCOMPtr<nsIOutputStream> localOutFile;
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nsresult rv =
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NS_NewSafeLocalFileOutputStream(getter_AddRefs(localOutFile), file,
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PR_WRONLY | PR_TRUNCATE | PR_CREATE_FILE);
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NS_ENSURE_SUCCESS(rv, rv);
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nsCOMPtr<nsIBufferedOutputStream> out = new nsCheckSummedOutputStream();
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rv = out->Init(localOutFile, nsCheckSummedOutputStream::MAX_BUFFER_SIZE);
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if (NS_SUCCEEDED(rv)) {
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out.forget(result);
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}
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return rv;
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}
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class nsCrc32CheckSumedOutputStream : public nsBufferedOutputStream {
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public:
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NS_DECL_ISUPPORTS_INHERITED
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static const uint32_t CHECKSUM_SIZE = 4;
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nsCrc32CheckSumedOutputStream() = default;
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NS_IMETHOD Finish() override;
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NS_IMETHOD Write(const char* buf, uint32_t count, uint32_t* result) override;
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NS_IMETHOD Init(nsIOutputStream* stream, uint32_t bufferSize) override;
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protected:
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virtual ~nsCrc32CheckSumedOutputStream() { nsBufferedOutputStream::Close(); }
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uint32_t mCheckSum;
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};
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inline nsresult NS_NewCrc32OutputStream(
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nsIOutputStream** aResult, already_AddRefed<nsIOutputStream> aOutput,
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uint32_t aBufferSize) {
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nsCOMPtr<nsIOutputStream> out = std::move(aOutput);
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nsCOMPtr<nsIBufferedOutputStream> bufferOutput =
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new nsCrc32CheckSumedOutputStream();
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nsresult rv = bufferOutput->Init(out, aBufferSize);
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if (NS_SUCCEEDED(rv)) {
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bufferOutput.forget(aResult);
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}
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return rv;
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}
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#endif
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