1 files changed, 109 insertions, 0 deletions
diff --git a/netwerk/streamconv/converters/nsHTTPCompressConv.h b/netwerk/streamconv/converters/nsHTTPCompressConv.h
new file mode 100644
index 0000000000..4ba2d9819c
--- /dev/null
+++ b/netwerk/streamconv/converters/nsHTTPCompressConv.h
@@ -0,0 +1,109 @@
+/* -*- 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:
+  // 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