The Tor Browser: netwerk/streamconv/converters/nsHTTPCompressConv.h@ca08bd8f51b2

     1 /* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 4 -*- */

     2 /* This Source Code Form is subject to the terms of the Mozilla Public

     3  * License, v. 2.0. If a copy of the MPL was not distributed with this

     4  * file, You can obtain one at http://mozilla.org/MPL/2.0/. */

     6 #if !defined (__nsHTTPCompressConv__h__)

     7 #define	__nsHTTPCompressConv__h__	1

     9 #include "nsIStreamConverter.h"

    10 #include "nsCOMPtr.h"

    12 #include "zlib.h"

    14 class nsIStringInputStream;

    16 #define NS_HTTPCOMPRESSCONVERTER_CID                \

    17 {                                                   \

    18     /* 66230b2b-17fa-4bd3-abf4-07986151022d */      \

    19     0x66230b2b,                                     \

    20     0x17fa,                                         \

    21     0x4bd3,                                         \

    22     {0xab, 0xf4, 0x07, 0x98, 0x61, 0x51, 0x02, 0x2d}\

    23 }

    26 #define	HTTP_DEFLATE_TYPE		"deflate"

    27 #define	HTTP_GZIP_TYPE	        "gzip"

    28 #define	HTTP_X_GZIP_TYPE	    "x-gzip"

    29 #define	HTTP_COMPRESS_TYPE	    "compress"

    30 #define	HTTP_X_COMPRESS_TYPE	"x-compress"

    31 #define	HTTP_IDENTITY_TYPE	    "identity"

    32 #define	HTTP_UNCOMPRESSED_TYPE	"uncompressed"

    34 typedef enum    {

    35         HTTP_COMPRESS_GZIP,

    36         HTTP_COMPRESS_DEFLATE,

    37         HTTP_COMPRESS_COMPRESS,

    38         HTTP_COMPRESS_IDENTITY

    39     }   CompressMode;

    41 class nsHTTPCompressConv	: public nsIStreamConverter	{

    42 public:

    43     // nsISupports methods

    44     NS_DECL_THREADSAFE_ISUPPORTS

    46 	NS_DECL_NSIREQUESTOBSERVER

    47     NS_DECL_NSISTREAMLISTENER

    49     // nsIStreamConverter methods

    50     NS_DECL_NSISTREAMCONVERTER

    53     nsHTTPCompressConv ();

    54     virtual ~nsHTTPCompressConv ();

    56 private:

    58     nsIStreamListener   *mListener; // this guy gets the converted data via his OnDataAvailable ()

    59 	CompressMode        mMode;

    61     unsigned char *mOutBuffer;

    62     unsigned char *mInpBuffer;

    64     uint32_t	mOutBufferLen;

    65     uint32_t	mInpBufferLen;

    67     nsCOMPtr<nsISupports>   mAsyncConvContext;

    68     nsCOMPtr<nsIStringInputStream>  mStream;

    70     nsresult do_OnDataAvailable (nsIRequest *request, nsISupports *aContext,

    71                                  uint64_t aSourceOffset, const char *buffer,

    72                                  uint32_t aCount);

    74     bool        mCheckHeaderDone;

    75     bool        mStreamEnded;

    76     bool        mStreamInitialized;

    77     bool        mDummyStreamInitialised;

    79     z_stream d_stream;

    80     unsigned mLen, hMode, mSkipCount, mFlags;

    82     uint32_t check_header (nsIInputStream *iStr, uint32_t streamLen, nsresult *rv);

    83 };

    86 #endif

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