KIO::ForwardingSlaveBase

#include <KIO/ForwardingSlaveBase>

Inheritance diagram for KIO::ForwardingSlaveBase:

Public Member Functions
	ForwardingSlaveBase (const QByteArray &protocol, const QByteArray &poolSocket, const QByteArray &appSocket)

void	chmod (const QUrl &url, int permissions) override

void	copy (const QUrl &src, const QUrl &dest, int permissions, JobFlags flags) override

void	del (const QUrl &url, bool isfile) override

void	get (const QUrl &url) override

void	listDir (const QUrl &url) override

void	mimetype (const QUrl &url) override

void	mkdir (const QUrl &url, int permissions) override

void	put (const QUrl &url, int permissions, JobFlags flags) override

void	rename (const QUrl &src, const QUrl &dest, JobFlags flags) override

void	setModificationTime (const QUrl &url, const QDateTime &mtime) override

void	stat (const QUrl &url) override

void	symlink (const QString &target, const QUrl &dest, JobFlags flags) override

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

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 ()

void	dumpObjectInfo () const const

void	dumpObjectTree ()

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 QRegExp &regExp, 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

bool	inherits (const char *className) const const

void	installEventFilter (QObject *filterObj)

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_DISABLE_COPY (Class)

	Q_DISABLE_COPY_MOVE (Class)

	Q_DISABLE_MOVE (Class)

	Q_EMIT Q_EMIT

	Q_ENUM (...)

	Q_ENUM_NS (...)

	Q_ENUMS (...)

	Q_FLAG (...)

	Q_FLAG_NS (...)

	Q_FLAGS (...)

	Q_GADGET Q_GADGET

	Q_INTERFACES (...)

	Q_INVOKABLE Q_INVOKABLE

	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	qFindChild (const QObject *obj, const QString &name)

QList< T >	qFindChildren (const QObject *obj, const QRegExp &regExp)

QList< T >	qFindChildren (const QObject *obj, const QString &name)

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	setParent (QObject *parent)

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

bool	signalsBlocked () const const

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

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

QThread *	thread () const const

Public Member Functions inherited from KIO::SlaveBase
	SlaveBase (const QByteArray &protocol, const QByteArray &pool_socket, const QByteArray &app_socket)

void	addTemporaryAuthorization (const QString &action)

MetaData	allMetaData () const

bool	cacheAuthentication (const AuthInfo &info)

void	canResume ()

bool	canResume (KIO::filesize_t offset)

bool	checkCachedAuthentication (AuthInfo &info)

virtual void	chown (const QUrl &url, const QString &owner, const QString &group)

virtual void	close ()

virtual void	closeConnection ()

KConfigGroup *	config ()

bool	configValue (const QString &key, bool defaultValue) const

QString	configValue (const QString &key, const QString &defaultValue=QString()) const

int	configValue (const QString &key, int defaultValue) const

void	connected ()

void	connectSlave (const QString &path)

int	connectTimeout ()

void	data (const QByteArray &data)

void	dataReq ()

void	disconnectSlave ()

virtual void	dispatch (int command, const QByteArray &data)

void	dispatchLoop ()

virtual void	dispatchOpenCommand (int command, const QByteArray &data)

void	dropNetwork (const QString &host=QString())

void	error (int _errid, const QString &_text)

void	errorPage ()

void	exit ()

void	finished ()

bool	hasMetaData (const QString &key) const

void	infoMessage (const QString &msg)

void	listEntries (const UDSEntryList &_entry)

void	listEntry (const UDSEntry &_entry, bool ready)

void	listEntry (const UDSEntry &entry)

void	lookupHost (const QString &host)

QMap< QString, QVariant >	mapConfig () const

int	messageBox (const QString &text, MessageBoxType type, const QString &title=QString(), const QString &primaryActionText=QString(), const QString &secondaryActionText=QString(), const QString &dontAskAgainName=QString())

int	messageBox (MessageBoxType type, const QString &text, const QString &title=QString(), const QString &primaryActionText=QString(), const QString &secondaryActionText=QString())

QString	metaData (const QString &key) const

void	mimeType (const QString &_type)

virtual void	multiGet (const QByteArray &data)

void	needSubUrlData ()

virtual void	open (const QUrl &url, QIODevice::OpenMode mode)

virtual void	openConnection ()

void	opened ()

bool	openPasswordDialog (KIO::AuthInfo &info, const QString &errorMsg=QString())

int	openPasswordDialogV2 (KIO::AuthInfo &info, const QString &errorMsg=QString())

void	position (KIO::filesize_t _pos)

void	processedPercent (float percent)

void	processedSize (KIO::filesize_t _bytes)

int	proxyConnectTimeout ()

virtual void	read (KIO::filesize_t size)

int	readData (QByteArray &buffer)

int	readTimeout ()

void	redirection (const QUrl &_url)

KRemoteEncoding *	remoteEncoding ()

virtual void	reparseConfiguration ()

bool	requestNetwork (const QString &host=QString())

PrivilegeOperationStatus	requestPrivilegeOperation ()

PrivilegeOperationStatus	requestPrivilegeOperation (const QString &operationDetails)

int	responseTimeout ()

virtual void	seek (KIO::filesize_t offset)

void	sendAndKeepMetaData ()

void	sendMetaData ()

virtual void	setHost (const QString &host, quint16 port, const QString &user, const QString &pass)

void	setKillFlag ()

virtual void	setLinkDest (const QUrl &url, const QString &target)

void	setMetaData (const QString &key, const QString &value)

virtual void	setSubUrl (const QUrl &url)

void	setTimeoutSpecialCommand (int timeout, const QByteArray &data=QByteArray())

virtual void	slave_status ()

void	slaveStatus (const QString &host, bool connected)

virtual void	special (const QByteArray &data)

void	speed (unsigned long _bytes_per_second)

void	statEntry (const UDSEntry &_entry)

void	totalSize (KIO::filesize_t _bytes)

void	truncated (KIO::filesize_t _length)

int	waitForAnswer (int expected1, int expected2, QByteArray &data, int *pCmd=nullptr)

int	waitForHostInfo (QHostInfo &info)

void	warning (const QString &msg)

bool	wasKilled () const

virtual void	write (const QByteArray &data)

void	written (KIO::filesize_t _bytes)

Protected Member Functions
virtual void	prepareUDSEntry (KIO::UDSEntry &entry, bool listing=false) const

QUrl	processedUrl () const

QUrl	requestedUrl () const

virtual bool	rewriteUrl (const QUrl &url, QUrl &newURL)=0

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 KIO::SlaveBase
virtual void	virtual_hook (int id, void *data)

Additional Inherited Members
Public Types inherited from KIO::SlaveBase
enum	ButtonCode { Ok = 1, Cancel = 2, PrimaryAction = 3, SecondaryAction = 4, Continue = 5, Yes = PrimaryAction, No = SecondaryAction }

enum	MessageBoxType { QuestionTwoActions = 1, WarningTwoActions = 2, WarningContinueCancel = 3, WarningTwoActionsCancel = 4, Information = 5, SSLMessageBox = 6, WarningContinueCancelDetailed = 10, QuestionYesNo = QuestionTwoActions, WarningYesNo = WarningTwoActions, WarningYesNoCancel = WarningTwoActionsCancel }

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)

QString	trUtf8 (const char sourceText, const char disambiguation, int n)

Public Attributes inherited from QObject
typedef	QObjectList

Protected Types inherited from KIO::SlaveBase
enum	VirtualFunctionId { AppConnectionMade = 0, GetFileSystemFreeSpace = 1, Truncate = 2 }

Protected Attributes inherited from KIO::SlaveBase
MetaData	mIncomingMetaData

MetaData	mOutgoingMetaData

QByteArray	mProtocol

Detailed Description

This class should be used as a base for ioslaves acting as a forwarder to other ioslaves. It has been designed to support only local filesystem like ioslaves.

If the resulting ioslave should be a simple proxy, you only need to implement the ForwardingSlaveBase::rewriteUrl() method.

For more advanced behavior, the classic ioslave methods should be reimplemented, because their default behavior in this class is to forward using the ForwardingSlaveBase::rewriteUrl() method.

A possible code snippet for an advanced stat() behavior would look like this in the child class:

void ChildProtocol::stat(const QUrl &url)
{
    bool is_special = false;
 
    // Process the URL to see if it should have
    // a special treatment
 
    if ( is_special )
    {
        // Handle the URL ourselves
        KIO::UDSEntry entry;
        // Fill entry with UDSAtom instances
        statEntry(entry);
        finished();
    }
    else
    {
        // Setup the ioslave internal state if
        // required by ChildProtocol::rewriteUrl()
        ForwardingSlaveBase::stat(url);
    }
}

Of course in this case, you surely need to reimplement listDir() and get() accordingly.

If you want view on directories to be correctly refreshed when something changes on a forwarded URL, you'll need a companion kded module to emit the KDirNotify Files*() D-Bus signals.

This class was initially used for media:/ ioslave. This ioslave code and the MediaDirNotify class of its companion kded module can be a good source of inspiration.

See also: ForwardingSlaveBase::rewriteUrl()

Author: Kevin Ottens ervin.nosp@m.@ips.nosp@m.quad..nosp@m.net

Deprecated:: Since 5.101, use ForwardingWorkerBase.

Definition at line 84 of file forwardingslavebase.h.

Member Function Documentation

◆ chmod()

void KIO::ForwardingSlaveBase::chmod	(	const QUrl &	url,
		int	permissions
	)

overridevirtual

Change permissions on url.

The slave emits ERR_DOES_NOT_EXIST or ERR_CANNOT_CHMOD

Reimplemented from KIO::SlaveBase.

Definition at line 255 of file forwardingslavebase.cpp.

◆ copy()

void KIO::ForwardingSlaveBase::copy	(	const QUrl &	src,
		const QUrl &	dest,
		int	permissions,
		JobFlags	flags
	)

overridevirtual

Copy src into dest.

By default, copy() is only called when copying a file from yourproto://host/path to yourproto://host/otherpath.

If you set copyFromFile=true then copy() will also be called when moving a file from file:///path to yourproto://host/otherpath. Otherwise such a copy would have to be done the slow way (get+put). See also KProtocolManager::canCopyFromFile().

If you set copyToFile=true then copy() will also be called when moving a file from yourproto: to file:. See also KProtocolManager::canCopyToFile().

If the slave returns an error ERR_UNSUPPORTED_ACTION, the job will ask for get + put instead.

If the slave returns an error ERR_FILE_ALREADY_EXIST, the job will ask for a different destination filename.

Parameters

src	where to copy the file from (decoded)
dest	where to copy the file to (decoded)
permissions	may be -1. In this case no special permission mode is set, and the owner and group permissions are not preserved.
flags	We support Overwrite here

Don't forget to set the modification time of dest to be the modification time of src.

Reimplemented from KIO::SlaveBase.

Definition at line 281 of file forwardingslavebase.cpp.

◆ del()

void KIO::ForwardingSlaveBase::del	(	const QUrl &	url,
		bool	isfile
	)

overridevirtual

Delete a file or directory.

Parameters

url	file/directory to delete
isfile	if true, a file should be deleted. if false, a directory should be deleted.

By default, del() on a directory should FAIL if the directory is not empty. However, if metadata("recurse") == "true", then the slave can do a recursive deletion. This behavior is only invoked if the slave specifies deleteRecursive=true in its protocol file.

Reimplemented from KIO::SlaveBase.

Definition at line 299 of file forwardingslavebase.cpp.

◆ get()

void KIO::ForwardingSlaveBase::get ( const QUrl & url )

overridevirtual

get, aka read.

Parameters

url	the full url for this request. Host, port and user of the URL can be assumed to be the same as in the last setHost() call.

The slave should first "emit" the MIME type by calling mimeType(), and then "emit" the data using the data() method.

The reason why we need get() to emit the MIME type is: when pasting a URL in krunner, or konqueror's location bar, we have to find out what is the MIME type of that URL. Rather than doing it with a call to mimetype(), then the app or part would have to do a second request to the same server, this is done like this: get() is called, and when it emits the MIME type, the job is put on hold and the right app or part is launched. When that app or part calls get(), the slave is magically reused, and the download can now happen. All with a single call to get() in the slave. This mechanism is also described in KIO::get().

Reimplemented from KIO::SlaveBase.

Definition at line 144 of file forwardingslavebase.cpp.

◆ listDir()

void KIO::ForwardingSlaveBase::listDir ( const QUrl & url )

overridevirtual

Lists the contents of url.

The slave should emit ERR_CANNOT_ENTER_DIRECTORY if it doesn't exist, if we don't have enough permissions. You should not list files if the path in url is empty, but redirect to a non-empty path instead.

Reimplemented from KIO::SlaveBase.

Definition at line 196 of file forwardingslavebase.cpp.

◆ mimetype()

void KIO::ForwardingSlaveBase::mimetype ( const QUrl & url )

overridevirtual

Finds MIME type for one file or directory.

This method should either emit 'mimeType' or it should send a block of data big enough to be able to determine the MIME type.

If the slave doesn't reimplement it, a get will be issued, i.e. the whole file will be downloaded before determining the MIME type on it - this is obviously not a good thing in most cases.

Reimplemented from KIO::SlaveBase.

Definition at line 183 of file forwardingslavebase.cpp.

◆ mkdir()

void KIO::ForwardingSlaveBase::mkdir	(	const QUrl &	url,
		int	permissions
	)

overridevirtual

Create a directory.

Parameters

url	path to the directory to create
permissions	the permissions to set after creating the directory (-1 if no permissions to be set) The slave emits ERR_CANNOT_MKDIR if failure.

Reimplemented from KIO::SlaveBase.

Definition at line 209 of file forwardingslavebase.cpp.

◆ prepareUDSEntry()

void KIO::ForwardingSlaveBase::prepareUDSEntry	(	KIO::UDSEntry &	entry,
		bool	listing = `false`
	)		const

protectedvirtual

Allow to modify a UDSEntry before it's sent to the ioslave endpoint.

This is the default implementation working in most cases, but sometimes you could make use of more forwarding black magic (for example dynamically transform any desktop file into a fake directory...)

Parameters

entry	the UDSEntry to post-process
listing	indicate if this entry it created during a listDir operation

Definition at line 87 of file forwardingslavebase.cpp.

◆ processedUrl()

QUrl KIO::ForwardingSlaveBase::processedUrl ( ) const

protected

Return the URL being processed by the ioslave Only access it inside prepareUDSEntry()

Definition at line 134 of file forwardingslavebase.cpp.

◆ put()

void KIO::ForwardingSlaveBase::put	(	const QUrl &	url,
		int	permissions,
		JobFlags	flags
	)

overridevirtual

put, i.e. write data into a file.

Parameters

url	where to write the file
permissions	may be -1. In this case no special permission mode is set.
flags	We support Overwrite here. Hopefully, we're going to support Resume in the future, too. If the file indeed already exists, the slave should NOT apply the permissions change to it. The support for resuming using .part files is done by calling canResume().

IMPORTANT: Use the "modified" metadata in order to set the modification time of the file.

See also: canResume()

Reimplemented from KIO::SlaveBase.

Definition at line 157 of file forwardingslavebase.cpp.

◆ rename()

void KIO::ForwardingSlaveBase::rename	(	const QUrl &	src,
		const QUrl &	dest,
		JobFlags	flags
	)

overridevirtual

Rename oldname into newname.

If the slave returns an error ERR_UNSUPPORTED_ACTION, the job will ask for copy + del instead.

Important: the slave must implement the logic "if the destination already exists, error ERR_DIR_ALREADY_EXIST or ERR_FILE_ALREADY_EXIST". For performance reasons no stat is done in the destination before hand, the slave must do it.

By default, rename() is only called when renaming (moving) from yourproto://host/path to yourproto://host/otherpath.

If you set renameFromFile=true then rename() will also be called when moving a file from file:///path to yourproto://host/otherpath. Otherwise such a move would have to be done the slow way (copy+delete). See KProtocolManager::canRenameFromFile() for more details.

If you set renameToFile=true then rename() will also be called when moving a file from yourproto: to file:. See KProtocolManager::canRenameToFile() for more details.

Parameters

src	where to move the file from
dest	where to move the file to
flags	We support Overwrite here

Reimplemented from KIO::SlaveBase.

Definition at line 222 of file forwardingslavebase.cpp.

◆ requestedUrl()

QUrl KIO::ForwardingSlaveBase::requestedUrl ( ) const

protected

Return the URL asked to the ioslave Only access it inside prepareUDSEntry()

Definition at line 139 of file forwardingslavebase.cpp.

◆ rewriteUrl()

virtual bool KIO::ForwardingSlaveBase::rewriteUrl	(	const QUrl &	url,
		QUrl &	newURL
	)

protectedpure virtual

Rewrite an url to its forwarded counterpart.

It should return true if everything was ok, and false otherwise.

If a problem is detected it's up to this method to trigger error() before returning. Returning false silently cancels the current slave operation.

Parameters

url	The URL as given during the slave call
newURL	The new URL to forward the slave call to

Returns: true if the given url could be correctly rewritten

◆ setModificationTime()

void KIO::ForwardingSlaveBase::setModificationTime	(	const QUrl &	url,
		const QDateTime &	mtime
	)

overridevirtual

Sets the modification time for url.

For instance this is what CopyJob uses to set mtime on dirs at the end of a copy. It could also be used to set the mtime on any file, in theory. The usual implementation on unix is to call utime(path, &myutimbuf). The slave emits ERR_DOES_NOT_EXIST or ERR_CANNOT_SETTIME

Reimplemented from KIO::SlaveBase.

Definition at line 268 of file forwardingslavebase.cpp.

◆ stat()

void KIO::ForwardingSlaveBase::stat ( const QUrl & url )

overridevirtual

Finds all details for one file or directory.

The information returned is the same as what listDir returns, but only for one file or directory. Call statEntry() after creating the appropriate UDSEntry for this url.

You can use the "details" metadata to optimize this method to only do as much work as needed by the application. By default details is 2 (all details wanted, including modification time, size, etc.), details==1 is used when deleting: we don't need all the information if it takes too much time, no need to follow symlinks etc. details==0 is used for very simple probing: we'll only get the answer "it's a file or a directory (or a symlink), or it doesn't exist".

Reimplemented from KIO::SlaveBase.

Definition at line 170 of file forwardingslavebase.cpp.

◆ symlink()

void KIO::ForwardingSlaveBase::symlink	(	const QString &	target,
		const QUrl &	dest,
		JobFlags	flags
	)

overridevirtual

Creates a symbolic link named dest, pointing to target, which may be a relative or an absolute path.

Parameters

target	The string that will become the "target" of the link (can be relative)
dest	The symlink to create.
flags	We support Overwrite here

Reimplemented from KIO::SlaveBase.

Definition at line 240 of file forwardingslavebase.cpp.

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

QUrl

KIO::UDSEntry

Definition: udsentry.h:77

KIO::ForwardingSlaveBase::stat

void stat(const QUrl &url) override

Finds all details for one file or directory.

Definition: forwardingslavebase.cpp:170

KIO::SlaveBase::finished

void finished()

Call to signal successful completion of any command besides openConnection and closeConnection.

Definition: slavebase.cpp:551

KIO::SlaveBase::statEntry

void statEntry(const UDSEntry &_entry)

Call this from stat() to express details about an object, the UDSEntry customarily contains the atoms...

Definition: slavebase.cpp:798

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About KIO

KIO::ForwardingSlaveBase

Public Member Functions

Protected Member Functions

Additional Inherited Members

Detailed Description

Member Function Documentation

◆ chmod()

◆ copy()

◆ del()

◆ get()

◆ listDir()

◆ mimetype()

◆ mkdir()

◆ prepareUDSEntry()

◆ processedUrl()

◆ put()

◆ rename()

◆ requestedUrl()

◆ rewriteUrl()

◆ setModificationTime()

◆ stat()

◆ symlink()