this class represents a TLS (Transport Layer Security) V1 based secure transport connection. More...

Inheritance diagram for DcmTLSConnection:

Collaboration diagram for DcmTLSConnection:

Public Member Functions
	DcmTLSConnection (int openSocket, SSL *newTLSConnection)
	constructor.
virtual	~DcmTLSConnection ()
	destructor
virtual DcmTransportLayerStatus	serverSideHandshake ()
	performs server side handshake on established socket.
virtual DcmTransportLayerStatus	clientSideHandshake ()
	performs client side handshake on established socket.
virtual DcmTransportLayerStatus	renegotiate (const char *newSuite)
	performs a re-negotiation of the connection with different connection parameters.
virtual ssize_t	read (void *buf, size_t nbyte)
	attempts to read nbyte bytes from the transport connection and writes them into the given buffer.
virtual ssize_t	write (void *buf, size_t nbyte)
	attempts to write nbyte bytes from the given buffer to the transport connection.
virtual void	close ()
	Closes the transport connection.
virtual unsigned long	getPeerCertificateLength ()
	returns the size in bytes of the peer certificate of a secure connection.
virtual unsigned long	getPeerCertificate (void *buf, unsigned long bufLen)
virtual OFBool	networkDataAvailable (int timeout)
	checks if data is available to be read on the transport connection.
virtual OFBool	isTransparentConnection ()
	returns OFTrue if this connection is a transparent TCP connection, OFFalse if the connection is a secure connection.
virtual OFString &	dumpConnectionParameters (OFString &str)
	dump the characteristics of the current connection
virtual const char *	errorString (DcmTransportLayerStatus code)
	returns an error string for a given error code.
Public Member Functions inherited from DcmTransportConnection
	DcmTransportConnection (int openSocket)
	constructor.
virtual	~DcmTransportConnection ()
	destructor
void	dumpConnectionParameters (STD_NAMESPACE ostream &out)
	prints the characteristics of the current connection on the given output stream.

Private Member Functions
	DcmTLSConnection (const DcmTLSConnection &)
	private undefined copy constructor
DcmTLSConnection &	operator= (const DcmTLSConnection &)
	private undefined assignment operator

Private Attributes
SSL *	tlsConnection
	pointer to the TLS connection structure used by the OpenSSL library
unsigned long	lastError
	last error code returned by the OpenSSL library

Additional Inherited Members
Static Public Member Functions inherited from DcmTransportConnection
static OFBool	selectReadableAssociation (DcmTransportConnection *connections[], int connCount, int timeout)
	indicates which of the specified transport connections is ready for reading.
Protected Member Functions inherited from DcmTransportConnection
int	getSocket ()
	returns the socket file descriptor managed by this object.
void	setSocket (int socket)
	set the socket file descriptor managed by this object.

Detailed Description

this class represents a TLS (Transport Layer Security) V1 based secure transport connection.

Definition at line 47 of file tlstrans.h.

Constructor & Destructor Documentation

DcmTLSConnection::DcmTLSConnection	(	int	openSocket,
		SSL *	newTLSConnection
	)

constructor.

Parameters

openSocket	TCP/IP socket to be used for the transport connection. the connection must already be establised on socket level. This object takes over control of the socket.
newTLSConnection	pointer to intialized OpenSSL connection object to be used for this connection.

Member Function Documentation

virtual DcmTransportLayerStatus DcmTLSConnection::clientSideHandshake ( )

virtual

performs client side handshake on established socket.

This function is used to establish a secure transport connection over the established TCP connection.

Returns: TCS_ok if successful, an error code otherwise.

Implements DcmTransportConnection.

virtual void DcmTLSConnection::close ( )

virtual

Closes the transport connection.

If a secure connection is used, a closure alert is sent before the connection is closed.

Implements DcmTransportConnection.

virtual OFString& DcmTLSConnection::dumpConnectionParameters ( OFString & str )

virtual

dump the characteristics of the current connection

Parameters

str	the string to dump into

Returns: reference to string

Implements DcmTransportConnection.

virtual const char* DcmTLSConnection::errorString ( DcmTransportLayerStatus code )

virtual

returns an error string for a given error code.

Parameters

code	error code

Returns: description for error code

Implements DcmTransportConnection.

virtual unsigned long DcmTLSConnection::getPeerCertificateLength ( )

virtual

returns the size in bytes of the peer certificate of a secure connection.

Returns: peer certificate length in bytes

Implements DcmTransportConnection.

virtual OFBool DcmTLSConnection::networkDataAvailable ( int timeout )

virtual

checks if data is available to be read on the transport connection.

Parameters

timeout maximum number of seconds to wait if no data is available. If this parameter is 0, the function does not block.

Returns: OFTrue if data is available, OFFalse otherwise.

Implements DcmTransportConnection.

virtual ssize_t DcmTLSConnection::read	(	void *	buf,
		size_t	nbyte
	)

virtual

attempts to read nbyte bytes from the transport connection and writes them into the given buffer.

Parameters

buf	buffer
nbyte	number of bytes to read

Returns: number of bytes read, negative number if unsuccessful.

Implements DcmTransportConnection.

virtual DcmTransportLayerStatus DcmTLSConnection::renegotiate ( const char * newSuite )

virtual

performs a re-negotiation of the connection with different connection parameters.

Used to change the parameters of the secure transport connection.

Parameters

newSuite string identifying the ciphersuite to be negotiated.

Returns: TCS_ok if successful, an error code otherwise.

Implements DcmTransportConnection.

virtual DcmTransportLayerStatus DcmTLSConnection::serverSideHandshake ( )

virtual

performs server side handshake on established socket.

This function is used to establish a secure transport connection over the established TCP connection.

Returns: TCS_ok if successful, an error code otherwise.

Implements DcmTransportConnection.

virtual ssize_t DcmTLSConnection::write	(	void *	buf,
		size_t	nbyte
	)

virtual

attempts to write nbyte bytes from the given buffer to the transport connection.

Parameters

buf	buffer
nbyte	number of bytes to write

Returns: number of bytes written, negative number if unsuccessful.

Implements DcmTransportConnection.

The documentation for this class was generated from the following file:

dcmtls/include/dcmtk/dcmtls/tlstrans.h

Public Member Functions

Private Member Functions

Private Attributes

Additional Inherited Members

Detailed Description

Constructor & Destructor Documentation

Member Function Documentation