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-rw-r--r--netwerk/streamconv/converters/nsHTTPCompressConv.h110
1 files changed, 110 insertions, 0 deletions
diff --git a/netwerk/streamconv/converters/nsHTTPCompressConv.h b/netwerk/streamconv/converters/nsHTTPCompressConv.h
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+++ b/netwerk/streamconv/converters/nsHTTPCompressConv.h
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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"
+
+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 {
+
+class BrotliWrapper;
+
+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();
+
+ using CompressMode = enum {
+ HTTP_COMPRESS_GZIP,
+ HTTP_COMPRESS_DEFLATE,
+ HTTP_COMPRESS_COMPRESS,
+ HTTP_COMPRESS_BROTLI,
+ HTTP_COMPRESS_IDENTITY
+ };
+
+ private:
+ virtual ~nsHTTPCompressConv();
+
+ nsCOMPtr<nsIStreamListener>
+ mListener; // this guy gets the converted data via his OnDataAvailable ()
+ Atomic<CompressMode, Relaxed> mMode{HTTP_COMPRESS_IDENTITY};
+
+ unsigned char* mOutBuffer{nullptr};
+ unsigned char* mInpBuffer{nullptr};
+
+ uint32_t mOutBufferLen{0};
+ uint32_t mInpBufferLen{0};
+
+ 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, uint64_t aSourceOffset,
+ const char* buffer, uint32_t aCount);
+
+ bool mCheckHeaderDone{false};
+ Atomic<bool> mStreamEnded{false};
+ bool mStreamInitialized{false};
+ bool mDummyStreamInitialised{false};
+ bool mFailUncleanStops;
+
+ z_stream d_stream{};
+ unsigned mLen{0}, hMode{0}, mSkipCount{0}, mFlags{0};
+
+ uint32_t check_header(nsIInputStream* iStr, uint32_t streamLen, nsresult* rs);
+
+ Atomic<uint32_t, Relaxed> mDecodedDataLength{0};
+
+ mutable mozilla::Mutex mMutex MOZ_UNANNOTATED{"nsHTTPCompressConv"};
+};
+
+} // namespace net
+} // namespace mozilla
+
+#endif