Panda3D

identityStreamBuf.h

00001 // Filename: identityStreamBuf.h
00002 // Created by:  drose (09Oct02)
00003 //
00004 ////////////////////////////////////////////////////////////////////
00005 //
00006 // PANDA 3D SOFTWARE
00007 // Copyright (c) Carnegie Mellon University.  All rights reserved.
00008 //
00009 // All use of this software is subject to the terms of the revised BSD
00010 // license.  You should have received a copy of this license along
00011 // with this source code in a file named "LICENSE."
00012 //
00013 ////////////////////////////////////////////////////////////////////
00014 
00015 #ifndef IDENTITYSTREAMBUF_H
00016 #define IDENTITYSTREAMBUF_H
00017 
00018 #include "pandabase.h"
00019 
00020 // This module is not compiled if OpenSSL is not available.
00021 #ifdef HAVE_OPENSSL
00022 
00023 #include "bioStreamPtr.h"
00024 #include "pointerTo.h"
00025 #include "socketStream.h"
00026 
00027 class HTTPChannel;
00028 
00029 ////////////////////////////////////////////////////////////////////
00030 //       Class : IdentityStreamBuf
00031 // Description : The streambuf object that implements
00032 //               IIdentityStream.
00033 ////////////////////////////////////////////////////////////////////
00034 class EXPCL_PANDAEXPRESS IdentityStreamBuf : public streambuf {
00035 public:
00036   IdentityStreamBuf();
00037   virtual ~IdentityStreamBuf();
00038 
00039   void open_read(BioStreamPtr *source, HTTPChannel *doc,
00040                  bool has_content_length, size_t content_length);
00041   void close_read();
00042 
00043   INLINE bool is_closed() const;
00044   INLINE ISocketStream::ReadState get_read_state() const;
00045 
00046 protected:
00047   virtual int underflow();
00048 
00049 private:
00050   size_t read_chars(char *start, size_t length);
00051 
00052   PT(BioStreamPtr) _source;
00053   bool _has_content_length;
00054   size_t _bytes_remaining;
00055   bool _wanted_nonblocking;
00056   ISocketStream::ReadState _read_state;
00057   char *_buffer;
00058 
00059   friend class IIdentityStream;
00060 };
00061 
00062 #include "identityStreamBuf.I"
00063 
00064 #endif  // HAVE_OPENSSL
00065 
00066 #endif
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