QCA::SASL

#include <QtCrypto>

Inheritance diagram for QCA::SASL:

[legend]

Classes
class	Params

Public Types
enum	AuthCondition { AuthFail , NoMechanism , BadProtocol , BadServer , BadAuth , NoAuthzid , TooWeak , NeedEncrypt , Expired , Disabled , NoUser , RemoteUnavailable }

enum	AuthFlags { AuthFlagsNone = 0x00 , AllowPlain = 0x01 , AllowAnonymous = 0x02 , RequireForwardSecrecy = 0x04 , RequirePassCredentials = 0x08 , RequireMutualAuth = 0x10 , RequireAuthzidSupport = 0x20 }

enum	ClientSendMode { AllowClientSendFirst , DisableClientSendFirst }

enum	Error { ErrorInit , ErrorHandshake , ErrorCrypt }

enum	ServerSendMode { AllowServerSendLast , DisableServerSendLast }

Signals
void	authCheck (const QString &user, const QString &authzid)

void	authenticated ()

void	clientStarted (bool clientInit, const QByteArray &clientInitData)

void	needParams (const QCA::SASL::Params &params)

void	nextStep (const QByteArray &stepData)

void	serverStarted ()

Signals inherited from QCA::SecureLayer
void	closed ()

void	error ()

void	readyRead ()

void	readyReadOutgoing ()

Public Member Functions
	SASL (QObject *parent=nullptr, const QString &provider=QString())

AuthCondition	authCondition () const

int	bytesAvailable () const override

int	bytesOutgoingAvailable () const override

void	continueAfterAuthCheck ()

void	continueAfterParams ()

int	convertBytesWritten (qint64 encryptedBytes) override

Error	errorCode () const

QString	mechanism () const

QStringList	mechanismList () const

void	putServerFirstStep (const QString &mech)

void	putServerFirstStep (const QString &mech, const QByteArray &clientInit)

void	putStep (const QByteArray &stepData)

QByteArray	read () override

QByteArray	readOutgoing (int *plainBytes=nullptr) override

QStringList	realmList () const

void	reset ()

void	setAuthzid (const QString &auth)

void	setConstraints (AuthFlags f, int minSSF, int maxSSF)

void	setConstraints (AuthFlags f, SecurityLevel s=SL_None)

void	setExternalAuthId (const QString &authid)

void	setExternalSSF (int strength)

void	setLocalAddress (const QString &addr, quint16 port)

void	setPassword (const SecureArray &pass)

void	setRealm (const QString &realm)

void	setRemoteAddress (const QString &addr, quint16 port)

void	setUsername (const QString &user)

int	ssf () const

void	startClient (const QString &service, const QString &host, const QStringList &mechlist, ClientSendMode mode=AllowClientSendFirst)

void	startServer (const QString &service, const QString &host, const QString &realm, ServerSendMode mode=DisableServerSendLast)

void	write (const QByteArray &a) override

void	writeIncoming (const QByteArray &a) override

Public Member Functions inherited from QCA::SecureLayer
	SecureLayer (QObject *parent=nullptr)

virtual void	close ()

virtual bool	isClosable () const

virtual QByteArray	readUnprocessed ()

Public Member Functions inherited from QObject
	QObject (QObject *parent)

QBindable< QString >	bindableObjectName ()

bool	blockSignals (bool block)

const QObjectList &	children () const const

QMetaObject::Connection	connect (const QObject sender, const char signal, const char *method, Qt::ConnectionType type) const const

void	deleteLater ()

void	destroyed (QObject *obj)

bool	disconnect (const char signal, const QObject receiver, const char *method) const const

bool	disconnect (const QObject receiver, const char method) const const

void	dumpObjectInfo () const const

void	dumpObjectTree () const const

QList< QByteArray >	dynamicPropertyNames () const const

virtual bool	event (QEvent *e)

virtual bool	eventFilter (QObject watched, QEvent event)

T	findChild (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QRegularExpression &re, Qt::FindChildOptions options) const const

QList< T >	findChildren (const QString &name, Qt::FindChildOptions options) const const

QList< T >	findChildren (Qt::FindChildOptions options) const const

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

bool	isQuickItemType () const const

bool	isWidgetType () const const

bool	isWindowType () const const

void	killTimer (int id)

virtual const QMetaObject *	metaObject () const const

void	moveToThread (QThread *targetThread)

QString	objectName () const const

void	objectNameChanged (const QString &objectName)

QObject *	parent () const const

QVariant	property (const char *name) const const

	Q_CLASSINFO (Name, Value)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_GADGET_EXPORT (EXPORT_MACRO)

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	Q_MOC_INCLUDE Q_MOC_INCLUDE

	Q_NAMESPACE Q_NAMESPACE

	Q_NAMESPACE_EXPORT (EXPORT_MACRO)

	Q_OBJECT Q_OBJECT

	Q_PROPERTY (...)

	Q_REVISION Q_REVISION

	Q_SET_OBJECT_NAME (Object)

	Q_SIGNAL Q_SIGNAL

	Q_SIGNALS Q_SIGNALS

	Q_SLOT Q_SLOT

	Q_SLOTS Q_SLOTS

T	qobject_cast (const QObject *object)

T	qobject_cast (QObject *object)

	QT_NO_NARROWING_CONVERSIONS_IN_CONNECT QT_NO_NARROWING_CONVERSIONS_IN_CONNECT

void	removeEventFilter (QObject *obj)

void	setObjectName (const QString &name)

void	setObjectName (QAnyStringView name)

void	setParent (QObject *parent)

bool	setProperty (const char *name, const QVariant &value)

bool	setProperty (const char *name, QVariant &&value)

bool	signalsBlocked () const const

int	startTimer (int interval, Qt::TimerType timerType)

int	startTimer (std::chrono::milliseconds interval, Qt::TimerType timerType)

QThread *	thread () const const

Public Member Functions inherited from QCA::Algorithm
	Algorithm (const Algorithm &from)

void	change (const QString &type, const QString &provider)

void	change (Provider::Context *c)

Provider::Context *	context ()

const Provider::Context *	context () const

Algorithm &	operator= (const Algorithm &from)

Provider *	provider () const

Provider::Context *	takeContext ()

QString	type () const

Additional Inherited Members
Properties inherited from QObject
	objectName

Static Public Member Functions inherited from QObject
QMetaObject::Connection	connect (const QObject sender, const char signal, const QObject receiver, const char method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject context, Functor functor, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method, Qt::ConnectionType type)

QMetaObject::Connection	connect (const QObject *sender, PointerToMemberFunction signal, Functor functor)

bool	disconnect (const QMetaObject::Connection &connection)

bool	disconnect (const QObject sender, const char signal, const QObject receiver, const char method)

bool	disconnect (const QObject sender, const QMetaMethod &signal, const QObject receiver, const QMetaMethod &method)

bool	disconnect (const QObject sender, PointerToMemberFunction signal, const QObject receiver, PointerToMemberFunction method)

QString	tr (const char sourceText, const char disambiguation, int n)

Public Attributes inherited from QObject
typedef	QObjectList

Protected Member Functions inherited from QObject
virtual void	childEvent (QChildEvent *event)

virtual void	connectNotify (const QMetaMethod &signal)

virtual void	customEvent (QEvent *event)

virtual void	disconnectNotify (const QMetaMethod &signal)

bool	isSignalConnected (const QMetaMethod &signal) const const

int	receivers (const char *signal) const const

QObject *	sender () const const

int	senderSignalIndex () const const

virtual void	timerEvent (QTimerEvent *event)

Protected Member Functions inherited from QCA::Algorithm
	Algorithm ()

	Algorithm (const QString &type, const QString &provider)

Detailed Description

Simple Authentication and Security Layer protocol implementation.

This class implements the Simple Authenication and Security Layer protocol, which is described in RFC2222 - see http://www.ietf.org/rfc/rfc2222.txt.

As the name suggests, SASL provides authentication (eg, a "login" of some form), for a connection oriented protocol, and can also provide protection for the subsequent connection.

The SASL protocol is designed to be extensible, through a range of "mechanisms", where a mechanism is the actual authentication method. Example mechanisms include Anonymous, LOGIN, Kerberos V4, and GSSAPI. Mechanisms can be added (potentially without restarting the server application) by the system administrator.

It is important to understand that SASL is neither "network aware" nor "protocol aware". That means that SASL does not understand how the client connects to the server, and SASL does not understand the actual application protocol.

Examples: saslclient.cpp, and saslserver.cpp.

Definition at line 831 of file qca_securelayer.h.

Member Enumeration Documentation

◆ AuthCondition

enum QCA::SASL::AuthCondition

Possible authentication error states.

Enumerator
AuthFail	Generic authentication failure.
NoMechanism	No compatible/appropriate authentication mechanism.
BadProtocol	Bad protocol or cancelled.
BadServer	Server failed mutual authentication (client side only)
BadAuth	Authentication failure (server side only)
NoAuthzid	Authorization failure (server side only)
TooWeak	Mechanism too weak for this user (server side only)
NeedEncrypt	Encryption is needed in order to use mechanism (server side only)
Expired	Passphrase expired, has to be reset (server side only)
Disabled	Account is disabled (server side only)
NoUser	User not found (server side only)
RemoteUnavailable	Remote service needed for auth is gone (server side only)

Definition at line 848 of file qca_securelayer.h.

◆ AuthFlags

enum QCA::SASL::AuthFlags

Authentication requirement flag values.

Definition at line 867 of file qca_securelayer.h.

◆ ClientSendMode

enum QCA::SASL::ClientSendMode

Mode options for client side sending.

Definition at line 881 of file qca_securelayer.h.

◆ Error

enum QCA::SASL::Error

Possible errors that may occur when using SASL.

Enumerator
ErrorInit	problem starting up SASL
ErrorHandshake	problem during the authentication process
ErrorCrypt	problem at anytime after

Definition at line 838 of file qca_securelayer.h.

◆ ServerSendMode

enum QCA::SASL::ServerSendMode

Mode options for server side sending.

Definition at line 890 of file qca_securelayer.h.

Constructor & Destructor Documentation

◆ SASL()

QCA::SASL::SASL	(	QObject *	parent = nullptr,
		const QString &	provider = QString() )

explicit

Standard constructor.

Parameters

parent	the parent object for this SASL connection
provider	if specified, the provider to use. If not specified, or specified as empty, then any provider is acceptable.

Member Function Documentation

◆ authCheck

void QCA::SASL::authCheck	(	const QString &	user,
		const QString &	authzid )

signal

This signal is emitted when the server needs to perform the authentication check.

If the user and authzid are valid, call continueAfterAuthCheck().

Parameters

user	the user identification name
authzid	the user authorization name

Examples: saslserver.cpp.

◆ authCondition()

AuthCondition QCA::SASL::authCondition ( ) const

Return the reason for authentication failure.

Examples: saslclient.cpp, and saslserver.cpp.

◆ authenticated

void QCA::SASL::authenticated ( )

signal

This signal is emitted when authentication is complete.

Examples: saslclient.cpp, and saslserver.cpp.

◆ bytesAvailable()

int QCA::SASL::bytesAvailable ( ) const

overridevirtual

Returns the number of bytes available to be read() on the application side.

Implements QCA::SecureLayer.

◆ bytesOutgoingAvailable()

int QCA::SASL::bytesOutgoingAvailable ( ) const

overridevirtual

Returns the number of bytes available to be readOutgoing() on the network side.

Implements QCA::SecureLayer.

◆ clientStarted

void QCA::SASL::clientStarted	(	bool	clientInit,
		const QByteArray &	clientInitData )

signal

This signal is emitted when the client has been successfully started.

Parameters

clientInit	true if the client should send an initial response to the server
clientInitData	the initial response to send to the server. Do note that there is a difference in SASL between an empty initial response and no initial response, and so even if clientInitData is an empty array, you still need to send an initial response if clientInit is true.

Examples: saslclient.cpp.

◆ continueAfterAuthCheck()

void QCA::SASL::continueAfterAuthCheck ( )

Continue negotiation after auth ids have been checked (server)

Examples: saslserver.cpp.

◆ continueAfterParams()

void QCA::SASL::continueAfterParams ( )

Continue negotiation after parameters have been set (client)

Examples: saslclient.cpp.

◆ convertBytesWritten()

int QCA::SASL::convertBytesWritten ( qint64 encryptedBytes )

overridevirtual

Convert encrypted bytes written to plain text bytes written.

Parameters

encryptedBytes the number of bytes to convert

Implements QCA::SecureLayer.

Examples: saslserver.cpp.

◆ errorCode()

Error QCA::SASL::errorCode ( ) const

Return the error code.

Examples: saslclient.cpp, and saslserver.cpp.

◆ mechanism()

QString QCA::SASL::mechanism ( ) const

Return the mechanism selected (client)

Examples: saslclient.cpp.

◆ mechanismList()

QStringList QCA::SASL::mechanismList ( ) const

Return the mechanism list (server)

Examples: saslserver.cpp.

◆ needParams

void QCA::SASL::needParams ( const QCA::SASL::Params & params )

signal

This signal is emitted when the client needs additional parameters.

After receiving this signal, the application should set the required parameter values appropriately and then call continueAfterParams().

Parameters

params the parameters that are required by the client

Examples: saslclient.cpp.

◆ nextStep

void QCA::SASL::nextStep ( const QByteArray & stepData )

signal

This signal is emitted when there is data required to be sent over the network to complete the next step in the authentication process.

Parameters

stepData the data to send over the network

Examples: saslclient.cpp, and saslserver.cpp.

◆ putServerFirstStep() [1/2]

void QCA::SASL::putServerFirstStep ( const QString & mech )

Process the first step in server mode (server)

Call this with the mechanism selected by the client. If there is initial client data, call the other version of this function instead.

Parameters

mech	the mechanism to be used.

Examples: saslserver.cpp.

◆ putServerFirstStep() [2/2]

void QCA::SASL::putServerFirstStep	(	const QString &	mech,
		const QByteArray &	clientInit )

Process the first step in server mode (server)

Call this with the mechanism selected by the client, and initial client data. If there is no initial client data, call the other version of this function instead.

Parameters

mech	the mechanism to be used
clientInit	the initial data provided by the client side

◆ putStep()

void QCA::SASL::putStep ( const QByteArray & stepData )

Process an authentication step.

Call this with authentication data received from the network. The only exception is the first step in server mode, in which case putServerFirstStep must be called.

Parameters

stepData the authentication data from the network

Examples: saslclient.cpp, and saslserver.cpp.

◆ read()

QByteArray QCA::SASL::read ( )

overridevirtual

This method reads decrypted (plain) data from the SecureLayer implementation.

You normally call this function on the application side after receiving the readyRead() signal.

Implements QCA::SecureLayer.

Examples: saslclient.cpp, and saslserver.cpp.

◆ readOutgoing()

QByteArray QCA::SASL::readOutgoing ( int * plainBytes = nullptr )

overridevirtual

This method provides encoded (typically encrypted) data.

You normally call this function to get data to write out to the network socket (e.g. using QTcpSocket::write()) after receiving the readyReadOutgoing() signal.

Parameters

plainBytes the number of bytes that were read.

Implements QCA::SecureLayer.

Examples: saslclient.cpp, and saslserver.cpp.

◆ realmList()

QStringList QCA::SASL::realmList ( ) const

Return the realm list, if available (client)

Examples: saslclient.cpp.

◆ reset()

void QCA::SASL::reset ( )

Reset the SASL mechanism.

◆ serverStarted

void QCA::SASL::serverStarted ( )

signal

This signal is emitted after the server has been successfully started.

Examples: saslserver.cpp.

◆ setAuthzid()

void QCA::SASL::setAuthzid ( const QString & auth )

Specify the authorization identity to use in authentication.

Parameters

auth	the authorization identity to use

Examples: saslclient.cpp.

◆ setConstraints() [1/2]

void QCA::SASL::setConstraints	(	AuthFlags	f,
		int	minSSF,
		int	maxSSF )

This is an overloaded member function, provided for convenience. It differs from the above function only in what argument(s) it accepts.Unless you have a specific reason for directly specifying a strength factor, you probably should use the method above.

Parameters

f	the authentication requirements, which you typically build using a binary OR function (eg AllowPlain \| AllowAnonymous)
minSSF	the minimum security strength factor that is required
maxSSF	the maximum security strength factor that is required

Note: Security strength factors are a rough approximation to key length in the encryption function (eg if you are securing with plain DES, the security strength factor would be 56).

◆ setConstraints() [2/2]

void QCA::SASL::setConstraints	(	AuthFlags	f,
		SecurityLevel	s = SL_None )

Specify connection constraints.

SASL supports a range of authentication requirements, and a range of security levels. This method allows you to specify the requirements for your connection.

Parameters

f	the authentication requirements, which you typically build using a binary OR function (eg AllowPlain \| AllowAnonymous)
s	the security level of the encryption, if used. See SecurityLevel for details of what each level provides.

Examples: saslclient.cpp, and saslserver.cpp.

◆ setExternalAuthId()

void QCA::SASL::setExternalAuthId ( const QString & authid )

Specify the id of the externally secured connection.

Parameters

authid the id of the connection

◆ setExternalSSF()

void QCA::SASL::setExternalSSF ( int strength )

Specify a security strength factor for an externally secured connection.

Parameters

strength the security strength factor of the connection

◆ setLocalAddress()

void QCA::SASL::setLocalAddress	(	const QString &	addr,
		quint16	port )

Specify the local address.

Parameters

addr	the address of the local part of the connection
port	the port number of the local part of the connection

◆ setPassword()

void QCA::SASL::setPassword ( const SecureArray & pass )

Specify the password to use in authentication.

Parameters

pass	the password to use

Examples: saslclient.cpp.

◆ setRealm()

void QCA::SASL::setRealm ( const QString & realm )

Specify the realm to use in authentication.

Parameters

realm the realm to use

Examples: saslclient.cpp.

◆ setRemoteAddress()

void QCA::SASL::setRemoteAddress	(	const QString &	addr,
		quint16	port )

Specify the peer address.

Parameters

addr	the address of the peer side of the connection
port	the port number of the peer side of the connection

◆ setUsername()

void QCA::SASL::setUsername ( const QString & user )

Specify the username to use in authentication.

Parameters

user	the username to use

Examples: saslclient.cpp.

◆ ssf()

int QCA::SASL::ssf ( ) const

Return the security strength factor of the connection.

Examples: saslclient.cpp, and saslserver.cpp.

◆ startClient()

void QCA::SASL::startClient	(	const QString &	service,
		const QString &	host,
		const QStringList &	mechlist,
		ClientSendMode	mode = AllowClientSendFirst )

Initialise the client side of the connection.

startClient must be called on the client side of the connection. clientStarted will be emitted when the operation is completed.

Parameters

service	the name of the service
host	the client side host name
mechlist	the list of mechanisms which can be used
mode	the mode to use on the client side

Examples: saslclient.cpp.

◆ startServer()

void QCA::SASL::startServer	(	const QString &	service,
		const QString &	host,
		const QString &	realm,
		ServerSendMode	mode = DisableServerSendLast )

Initialise the server side of the connection.

startServer must be called on the server side of the connection. serverStarted will be emitted when the operation is completed.

Parameters

service	the name of the service
host	the server side host name
realm	the realm to use
mode	which mode to use on the server side

Examples: saslserver.cpp.

◆ write()

void QCA::SASL::write ( const QByteArray & a )

overridevirtual

This method writes unencrypted (plain) data to the SecureLayer implementation.

You normally call this function on the application side.

Parameters

a	the source of the application-side data

Implements QCA::SecureLayer.

Examples: saslclient.cpp, and saslserver.cpp.

◆ writeIncoming()

void QCA::SASL::writeIncoming ( const QByteArray & a )

overridevirtual

This method accepts encoded (typically encrypted) data for processing.

You normally call this function using data read from the network socket (e.g. using QTcpSocket::readAll()) after receiving a signal that indicates that the socket has data to read.

Parameters

a	the ByteArray to take network-side data from

Implements QCA::SecureLayer.

Examples: saslclient.cpp.

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

qca_securelayer.h

KDE's Doxygen guidelines are available online.

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About QCA

QCA::SASL

Classes

Public Types

Signals

Public Member Functions

Additional Inherited Members

Detailed Description

Member Enumeration Documentation

◆ AuthCondition

◆ AuthFlags

◆ ClientSendMode

◆ Error

◆ ServerSendMode

Constructor & Destructor Documentation

◆ SASL()

Member Function Documentation

◆ authCheck

◆ authCondition()

◆ authenticated

◆ bytesAvailable()

◆ bytesOutgoingAvailable()

◆ clientStarted

◆ continueAfterAuthCheck()

◆ continueAfterParams()

◆ convertBytesWritten()

◆ errorCode()

◆ mechanism()

◆ mechanismList()

◆ needParams

◆ nextStep

◆ putServerFirstStep() [1/2]

◆ putServerFirstStep() [2/2]

◆ putStep()

◆ read()

◆ readOutgoing()

◆ realmList()

◆ reset()

◆ serverStarted

◆ setAuthzid()

◆ setConstraints() [1/2]

◆ setConstraints() [2/2]

◆ setExternalAuthId()

◆ setExternalSSF()

◆ setLocalAddress()

◆ setPassword()

◆ setRealm()

◆ setRemoteAddress()

◆ setUsername()

◆ ssf()

◆ startClient()

◆ startServer()

◆ write()

◆ writeIncoming()