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// **********************************************************************
//
// Copyright (c) 2001
// MutableRealms, Inc.
// Huntsville, AL, USA
//
// All Rights Reserved
//
// **********************************************************************
#ifndef ICE_SSL_CONNECTION_OPENSSL_H
#define ICE_SSL_CONNECTION_OPENSSL_H
#include <openssl/ssl.h>
#include <IceUtil/Mutex.h>
#include <Ice/SslConnection.h>
#include <Ice/SslSystem.h>
namespace IceSecurity
{
namespace Ssl
{
namespace OpenSSL
{
using namespace Ice;
class SafeFlag
{
public:
SafeFlag(bool flagVal = false)
{
_flag = flagVal;
}
~SafeFlag()
{
}
bool checkAndSet()
{
::IceUtil::Mutex::Lock sync(_mutex);
if (_flag)
{
return false;
}
else
{
_flag = true;
return true;
}
}
bool check()
{
::IceUtil::Mutex::Lock sync(_mutex);
return _flag;
}
void set()
{
::IceUtil::Mutex::Lock sync(_mutex);
_flag = true;
}
void unset()
{
::IceUtil::Mutex::Lock sync(_mutex);
_flag = false;
}
private:
::IceUtil::Mutex _mutex;
bool _flag;
};
class HandshakeSentinel
{
public:
HandshakeSentinel(SafeFlag& handshakeFlag) :
_flag(handshakeFlag)
{
_ownHandshake = _flag.checkAndSet();
}
~HandshakeSentinel()
{
if (_ownHandshake)
{
_flag.unset();
}
}
bool ownHandshake()
{
return _ownHandshake;
}
private:
bool _ownHandshake;
SafeFlag& _flag;
};
class Connection : public IceSecurity::Ssl::Connection
{
public:
Connection(SSL*, string&);
virtual ~Connection();
virtual void shutdown();
virtual int read(Buffer&, int) = 0;
virtual int write(Buffer&, int) = 0;
virtual int init(int timeout = 0) = 0;
void setTrace(TraceLevelsPtr traceLevels) { _traceLevels = traceLevels; };
void setLogger(LoggerPtr traceLevels) { _logger = traceLevels; };
void setHandshakeReadTimeout(int timeout) { _handshakeReadTimeout = timeout; };
protected:
int connect();
int accept();
int renegotiate();
int initialize(int timeout);
inline int pending() { return SSL_pending(_sslConnection); };
inline int getLastError() const { return SSL_get_error(_sslConnection, _lastError); };
int sslRead(char*, int);
int sslWrite(char*, int);
void printGetError(int);
void protocolWrite();
int readInBuffer(Buffer&);
int readSelect(int);
int writeSelect(int);
int readSSL(Buffer&, int);
// Retrieves errors from the OpenSSL library.
string sslGetErrors();
virtual void showConnectionInfo() = 0;
void showCertificateChain(BIO*);
void showPeerCertificate(BIO*, const char*);
void showSharedCiphers(BIO*);
void showSessionInfo(BIO*);
void showSelectedCipherInfo(BIO*);
void showHandshakeStats(BIO*);
void showClientCAList(BIO*, const char*);
void setLastError(int errorCode) { _lastError = errorCode; };
// Pointer to the OpenSSL Connection structure.
SSL* _sslConnection;
int _lastError;
// TODO: Review this after a healthy stint of testing
// Buffer for application data that may be returned during handshake
// (probably won't contain anything, may be removed later).
Buffer _inBuffer;
::IceUtil::Mutex _inBufferMutex;
::IceUtil::Mutex _handshakeWaitMutex;
TraceLevelsPtr _traceLevels;
LoggerPtr _logger;
System* _system;
SafeFlag _handshakeFlag;
int _initWantRead;
int _initWantWrite;
bool _timeoutEncountered;
int _handshakeReadTimeout;
int _readTimeout;
};
}
}
}
#endif
|
