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rippled/Subtrees/beast/modules/beast_asio/handshake/beast_HandshakeDetectLogicSSL3.h
2013-08-17 21:09:57 -07:00

78 lines
2.2 KiB
C++

//------------------------------------------------------------------------------
/*
This file is part of Beast: https://github.com/vinniefalco/Beast
Copyright 2013, Vinnie Falco <vinnie.falco@gmail.com>
Permission to use, copy, modify, and/or distribute this software for any
purpose with or without fee is hereby granted, provided that the above
copyright notice and this permission notice appear in all copies.
THE SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES
WITH REGARD TO THIS SOFTWARE INCLUDING ALL IMPLIED WARRANTIES OF
MERCHANTABILITY AND FITNESS. IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR
ANY SPECIAL , DIRECT, INDIRECT, OR CONSEQUENTIAL DAMAGES OR ANY DAMAGES
WHATSOEVER RESULTING FROM LOSS OF USE, DATA OR PROFITS, WHETHER IN AN
ACTION OF CONTRACT, NEGLIGENCE OR OTHER TORTIOUS ACTION, ARISING OUT OF
OR IN CONNECTION WITH THE USE OR PERFORMANCE OF THIS SOFTWARE.
*/
//==============================================================================
#ifndef BEAST_HANDSHAKEDETECTLOGICSSL3_H_INCLUDED
#define BEAST_HANDSHAKEDETECTLOGICSSL3_H_INCLUDED
// Handshake for SSL 3 (Also TLS 1.0 and 1.1)
//
// http://www.ietf.org/rfc/rfc2246.txt
//
// Section 7.4. Handshake protocol
//
class HandshakeDetectLogicSSL3 : public HandshakeDetectLogic
{
public:
typedef int arg_type; // dummy
explicit HandshakeDetectLogicSSL3 (arg_type const&)
{
}
enum
{
bytesNeeded = 6
};
std::size_t max_needed ()
{
return bytesNeeded;
}
template <typename ConstBufferSequence>
void analyze (ConstBufferSequence const& buffer)
{
uint16 version;
FixedInputBuffer <bytesNeeded> in (buffer);
uint8 msg_type;
if (! in.read (&msg_type))
return;
// msg_type must be 0x16 = "SSL Handshake"
//
if (msg_type != 0x16)
return fail ();
if (! in.read (&version))
return;
version = fromNetworkByteOrder (version);
uint16 length;
if (! in.read (&length))
return;
length = fromNetworkByteOrder (length);
conclude ();
}
};
#endif