1 files changed, 137 insertions, 0 deletions
diff --git a/netwerk/streamconv/converters/nsHTTPCompressConv.h b/netwerk/streamconv/converters/nsHTTPCompressConv.h
new file mode 100644
index 0000000000..1ad34bbfab
--- /dev/null
+++ b/netwerk/streamconv/converters/nsHTTPCompressConv.h
@@ -0,0 +1,137 @@
+/* -*- 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