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/* -*- Mode: C++; tab-width: 8; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/* vim: set sw=2 ts=8 et 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/. */
#if !defined(__nsHTTPCompressConv__h__)
# define __nsHTTPCompressConv__h__ 1
# include "nsIStreamConverter.h"
# include "nsICompressConvStats.h"
# include "nsIThreadRetargetableStreamListener.h"
# include "nsCOMPtr.h"
# include "mozilla/Atomics.h"
# include "mozilla/Mutex.h"
# include "zlib.h"
// brotli includes
# undef assert
# include "assert.h"
# include "state.h"
class nsIStringInputStream;
# define NS_HTTPCOMPRESSCONVERTER_CID \
{ \
/* 66230b2b-17fa-4bd3-abf4-07986151022d */ \
0x66230b2b, 0x17fa, 0x4bd3, { \
0xab, 0xf4, 0x07, 0x98, 0x61, 0x51, 0x02, 0x2d \
} \
}
# define HTTP_DEFLATE_TYPE "deflate"
# define HTTP_GZIP_TYPE "gzip"
# define HTTP_X_GZIP_TYPE "x-gzip"
# define HTTP_COMPRESS_TYPE "compress"
# define HTTP_X_COMPRESS_TYPE "x-compress"
# define HTTP_BROTLI_TYPE "br"
# define HTTP_IDENTITY_TYPE "identity"
# define HTTP_UNCOMPRESSED_TYPE "uncompressed"
namespace mozilla {
namespace net {
typedef enum {
HTTP_COMPRESS_GZIP,
HTTP_COMPRESS_DEFLATE,
HTTP_COMPRESS_COMPRESS,
HTTP_COMPRESS_BROTLI,
HTTP_COMPRESS_IDENTITY
} CompressMode;
class BrotliWrapper {
public:
BrotliWrapper()
: mTotalOut(0),
mStatus(NS_OK),
mBrotliStateIsStreamEnd(false),
mRequest(nullptr),
mContext(nullptr),
mSourceOffset(0) {
BrotliDecoderStateInit(&mState, 0, 0, 0);
}
~BrotliWrapper() { BrotliDecoderStateCleanup(&mState); }
BrotliDecoderState mState;
Atomic<size_t, Relaxed> mTotalOut;
nsresult mStatus;
Atomic<bool, Relaxed> mBrotliStateIsStreamEnd;
nsIRequest* mRequest;
nsISupports* mContext;
uint64_t mSourceOffset;
};
class nsHTTPCompressConv : public nsIStreamConverter,
public nsICompressConvStats,
public nsIThreadRetargetableStreamListener {
public:
// nsISupports methods
NS_DECL_THREADSAFE_ISUPPORTS
NS_DECL_NSIREQUESTOBSERVER
NS_DECL_NSISTREAMLISTENER
NS_DECL_NSICOMPRESSCONVSTATS
NS_DECL_NSITHREADRETARGETABLESTREAMLISTENER
// nsIStreamConverter methods
NS_DECL_NSISTREAMCONVERTER
nsHTTPCompressConv();
private:
virtual ~nsHTTPCompressConv();
nsCOMPtr<nsIStreamListener>
mListener; // this guy gets the converted data via his OnDataAvailable ()
Atomic<CompressMode, Relaxed> mMode;
unsigned char* mOutBuffer;
unsigned char* mInpBuffer;
uint32_t mOutBufferLen;
uint32_t mInpBufferLen;
UniquePtr<BrotliWrapper> mBrotli;
nsCOMPtr<nsIStringInputStream> mStream;
static nsresult BrotliHandler(nsIInputStream* stream, void* closure,
const char* dataIn, uint32_t, uint32_t avail,
uint32_t* countRead);
nsresult do_OnDataAvailable(nsIRequest* request, nsISupports* aContext,
uint64_t aSourceOffset, const char* buffer,
uint32_t aCount);
bool mCheckHeaderDone;
Atomic<bool> mStreamEnded;
bool mStreamInitialized;
bool mDummyStreamInitialised;
bool mFailUncleanStops;
z_stream d_stream;
unsigned mLen, hMode, mSkipCount, mFlags;
uint32_t check_header(nsIInputStream* iStr, uint32_t streamLen, nsresult* rv);
Atomic<uint32_t, Relaxed> mDecodedDataLength;
mutable mozilla::Mutex mMutex;
};
} // namespace net
} // namespace mozilla
#endif
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