twisted.protocols.ftp.FTPClient : API documentation

FTPClient is a client implementation of the FTP protocol which exposes FTP commands as methods which return Deferreds.

Each command method returns a Deferred which is called back when a successful response code (2xx or 3xx) is received from the server or which is error backed if an error response code (4xx or 5xx) is received from the server or if a protocol violation occurs. If an error response code is received, the Deferred fires with a Failure wrapping a CommandFailed instance. The CommandFailed instance is created with a list of the response lines received from the server.

See RFC 959 for error code definitions.

Both active and passive transfers are supported.

Instance Variable	passive	See description in __init__.
Method	__init__	Constructor.
Method	fail	Disconnect, and also give an error to any queued deferreds.
Method	receiveFromConnection	Retrieves a file or listing generated by the given command, feeding it to the given protocol.
Method	queueLogin	Login: send the username, send the password, and set retrieval mode to binary
Method	sendToConnection	XXX
Method	generatePortCommand	(Private) Generates the text of a given PORT command.
Method	escapePath	Returns a FTP escaped path (replace newlines with nulls).
Method	retrieveFile	Retrieve a file from the given path
Method	storeFile	Store a file at the given path.
Method	rename	Rename a file.
Method	list	Retrieve a file listing into the given protocol instance.
Method	nlst	Retrieve a short file listing into the given protocol instance.
Method	cwd	Issues the CWD (Change Working Directory) command. It's also available as changeDirectory, which parses the result.
Method	changeDirectory	Change the directory on the server and parse the result to determine if it was successful or not.
Method	makeDirectory	Make a directory
Method	removeFile	Delete a file on the server.
Method	removeDirectory	Delete a directory on the server.
Method	cdup	Issues the CDUP (Change Directory UP) command.
Method	pwd	Issues the PWD (Print Working Directory) command.
Method	getDirectory	Returns the current remote directory.
Method	quit	Issues the QUIT command.
Method	_openDataConnection	This method returns a DeferredList.

Inherited from FTPClientBasic:

Method	sendLine	(Private) Sends a line, unless line is None.
Method	sendNextCommand	(Private) Processes the next command in the queue.
Method	queueCommand	Add an FTPCommand object to the queue.
Method	queueStringCommand	Queues a string to be issued as an FTP command
Method	popCommandQueue	Return the front element of the command queue, or None if empty.
Method	lineReceived	(Private) Parses the response messages from the FTP server.
Method	connectionLost	Called when the connection is shut down.
Method	_fail	Errback all queued deferreds.
Method	_cb_greeting	Undocumented

Inherited from LineReceiver (via FTPClientBasic):

Class Variable	delimiter	The line-ending delimiter to use. By default this is `b'\r\n'`.
Class Variable	MAX_LENGTH	The maximum length of a line to allow (If a sent line is longer than this, the connection is dropped). Default is 16384.
Method	clearLineBuffer	Clear buffered data.
Method	dataReceived	Protocol.dataReceived. Translates bytes into lines, and calls lineReceived (or rawDataReceived, depending on mode.)
Method	setLineMode	Sets the line-mode of this receiver.
Method	setRawMode	Sets the raw mode of this receiver. Further data received will be sent to rawDataReceived rather than lineReceived.
Method	rawDataReceived	Override this for when raw data is received.
Method	lineLengthExceeded	Called when the maximum line length has been reached. Override if it needs to be dealt with in some special way.

Inherited from Protocol (via FTPClientBasic, LineReceiver):

Method

logPrefix

Return a prefix matching the class name, to identify log messages related to this protocol instance.

Inherited from BaseProtocol (via FTPClientBasic, LineReceiver, Protocol):

Method	makeConnection	Make a connection to a transport and a server.
Method	connectionMade	Called when a connection is made.

Inherited from _PauseableMixin (via FTPClientBasic, LineReceiver):

Method	pauseProducing	Undocumented
Method	resumeProducing	Undocumented
Method	stopProducing	Undocumented

Constructor.

I will login as soon as I receive the welcome message from the server.

Parameters	username	FTP username
	password	FTP password
	passive	flag that controls if I use active or passive data connections. You can also change this after construction by assigning to `self.passive`.

Disconnect, and also give an error to any queued deferreds.

Retrieves a file or listing generated by the given command, feeding it to the given protocol.

Parameters	commands	list of strings of FTP commands to execute then receive the results of (e.g. `LIST`, `RETR`)
	protocol	A `Protocol` instance e.g. an `FTPFileListProtocol`, or something that can be adapted to one. Typically this will be an `IConsumer` implementation.
Returns	`Deferred`.

XXX

Returns

A tuple of two Deferreds:

Deferred IFinishableConsumer. You must call the finish method on the IFinishableConsumer when the file is completely transferred.
Deferred list of control-connection responses.

This method returns a DeferredList.

(Private) Generates the text of a given PORT command.

Returns a FTP escaped path (replace newlines with nulls).

Retrieve a file from the given path

This method issues the 'RETR' FTP command.

The file is fed into the given Protocol instance. The data connection will be passive if self.passive is set.

Parameters	path	path to file that you wish to receive.
	protocol	a `Protocol` instance.
	offset	offset to start downloading from
Returns	`Deferred`

Store a file at the given path.

This method issues the 'STOR' FTP command.

Returns

A tuple of two Deferreds:

Deferred IFinishableConsumer. You must call the finish method on the IFinishableConsumer when the file is completely transferred.
Deferred list of control-connection responses.

Rename a file.

This method issues the RNFR/RNTO command sequence to rename pathFrom to pathTo.

Parameters	pathFrom: the absolute path to the file to be renamed
	pathTo: the absolute path to rename the file to.
Returns	A `Deferred` which fires when the rename operation has succeeded or failed. If it succeeds, the `Deferred` is called back with a two-tuple of lists. The first list contains the responses to the RNFR command. The second list contains the responses to the RNTO command. If either RNFR or RNTO fails, the `Deferred` is errbacked with `CommandFailed` or `BadResponse`. (type: `Deferred`)
Present Since	8.2

Retrieve a file listing into the given protocol instance.

This method issues the 'LIST' FTP command.

Parameters	path	path to get a file listing for.
	protocol	a `Protocol` instance, probably a `FTPFileListProtocol` instance. It can cope with most common file listing formats.
Returns	`Deferred`

Retrieve a short file listing into the given protocol instance.

This method issues the 'NLST' FTP command.

NLST (should) return a list of filenames, one per line.

Parameters	path	path to get short file listing for.
	protocol	a `Protocol` instance.

Issues the CWD (Change Working Directory) command. It's also available as changeDirectory, which parses the result.

Returns a Deferred that will be called when done.

Change the directory on the server and parse the result to determine if it was successful or not.

Parameters	path	The path to which to change. (type: `str`)
Returns	a `Deferred` which will be called back when the directory change has succeeded or errbacked if an error occurrs.

Make a directory

This method issues the MKD command.

Parameters	path	The path to the directory to create. (type: `str`)
Returns	A `Deferred` which fires when the server responds. If the directory is created, the `Deferred` is called back with the server response. If the server response indicates the directory was not created, the `Deferred` is errbacked with a `Failure` wrapping `CommandFailed` or `BadResponse`. (type: `Deferred`)
Present Since	8.2

Delete a file on the server.

removeFile issues a DELE command to the server to remove the indicated file. Note that this command cannot remove a directory.

Parameters	path	The path to the file to delete. May be relative to the current dir. (type: `str`)
Returns	A `Deferred` which fires when the server responds. On error, it is errbacked with either `CommandFailed` or `BadResponse`. On success, it is called back with a list of response lines. (type: `Deferred`)
Present Since	8.2

Delete a directory on the server.

removeDirectory issues a RMD command to the server to remove the indicated directory. Described in RFC959.

Parameters	path	The path to the directory to delete. May be relative to the current working directory. (type: `str`)
Returns	A `Deferred` which fires when the server responds. On error, it is errbacked with either `CommandFailed` or `BadResponse`. On success, it is called back with a list of response lines. (type: `Deferred`)
Present Since	11.1

Issues the CDUP (Change Directory UP) command.

Returns a Deferred that will be called when done.

Issues the PWD (Print Working Directory) command.

The getDirectory does the same job but automatically parses the result.

Returns a Deferred that will be called when done. It is up to the caller to interpret the response, but the parsePWDResponse method in this module should work.

Returns the current remote directory.

Returns a Deferred that will be called back with a str giving the remote directory or which will errback with CommandFailed if an error response is returned.

Issues the QUIT command.

Returns A Deferred that fires when the server acknowledges the QUIT command. The transport should not be disconnected until this Deferred fires.

t.p.f.FTPClient(FTPClientBasic) : class documentation