Protocol Interpreter for the File Transfer Protocol

Instance Variable state The current server state. One of UNAUTH, INAUTH, AUTHED, RENAMING.
Instance Variable shell The connected avatar
Instance Variable binary The transfer mode. If false, ASCII.
Instance Variable dtpFactory Generates a single DTP for this session
Instance Variable dtpPort Port returned from listenTCP
Instance Variable listenFactory A callable with the signature of twisted.internet.interfaces.IReactorTCP.listenTCP which will be used to create Ports for passive connections (mainly for testing).
Instance Variable passivePortRange iterator used as source of passive port numbers. (type: iterator)
Class Variable UNAUTH Command channel is not yet authenticated. (type: int)
Class Variable INAUTH Command channel is in the process of being authenticated. (type: int)
Class Variable AUTHED Command channel was successfully authenticated. (type: int)
Class Variable RENAMING Command channel is between the renaming command sequence. (type: int)
Method reply Undocumented
Method sendLine (Private) Encodes and sends a line
Method connectionMade Called when a connection is made.
Method connectionLost Called when the connection is shut down.
Method timeoutConnection Called when the connection times out.
Method lineReceived Override this for when each line is received.
Method processCommand Undocumented
Method getDTPPort Return a port for passive access, using self.passivePortRange attribute.
Method ftp_USER First part of login. Get the username the peer wants to authenticate as.
Method ftp_PASS Second part of login. Get the password the peer wants to authenticate with.
Method ftp_PASV Request for a passive connection
Method ftp_PORT Undocumented
Method ftp_LIST No summary
Method ftp_NLST No summary
Method ftp_CWD Undocumented
Method ftp_CDUP Undocumented
Method ftp_PWD Undocumented
Method ftp_RETR This command causes the content of a file to be sent over the data transfer channel. If the path is to a folder, an error will be raised.
Method ftp_STOR STORE (STOR)
Method ftp_SIZE File SIZE
Method ftp_MDTM File Modification Time (MDTM)
Method ftp_TYPE REPRESENTATION TYPE (TYPE)
Method type_A Undocumented
Method type_I Undocumented
Method type_UNKNOWN Undocumented
Method ftp_SYST Undocumented
Method ftp_STRU Undocumented
Method ftp_MODE Undocumented
Method ftp_MKD Undocumented
Method ftp_RMD Undocumented
Method ftp_DELE Undocumented
Method ftp_NOOP Undocumented
Method ftp_RNFR Undocumented
Method ftp_RNTO Undocumented
Method ftp_FEAT Advertise the features supported by the server.
Method ftp_OPTS Handle OPTS command.
Method ftp_QUIT Undocumented
Method cleanupDTP Call when DTP connection exits
Method _encodeName Encode name to be sent over the wire.

Inherited from LineReceiver:

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 LineReceiver):

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

Inherited from BaseProtocol (via LineReceiver, Protocol):

Method makeConnection Make a connection to a transport and a server.

Inherited from _PauseableMixin (via LineReceiver):

Method pauseProducing Undocumented
Method resumeProducing Undocumented
Method stopProducing Undocumented

Inherited from TimeoutMixin:

Class Variable timeOut The number of seconds after which to timeout the connection.
Method callLater Wrapper around reactor.callLater for test purpose.
Method resetTimeout Reset the timeout count down.
Method setTimeout Change the timeout period
Method __timedOut Undocumented
state =
The current server state. One of UNAUTH, INAUTH, AUTHED, RENAMING.
shell =
The connected avatar
binary =
The transfer mode. If false, ASCII.
dtpFactory =
Generates a single DTP for this session
dtpPort =
Port returned from listenTCP
listenFactory =
A callable with the signature of twisted.internet.interfaces.IReactorTCP.listenTCP which will be used to create Ports for passive connections (mainly for testing).
passivePortRange =
iterator used as source of passive port numbers. (type: iterator)
UNAUTH =
Command channel is not yet authenticated. (type: int)
INAUTH =
Command channel is in the process of being authenticated. (type: int)
AUTHED =
Command channel was successfully authenticated. (type: int)
RENAMING =
Command channel is between the renaming command sequence. (type: int)
def reply(self, key, *args): (source)
Undocumented
def sendLine(self, line): (source)

(Private) Encodes and sends a line

Parameterslinebytes or unicode
def connectionMade(self): (source)

Called when a connection is made.

This may be considered the initializer of the protocol, because it is called when the connection is completed. For clients, this is called once the connection to the server has been established; for servers, this is called after an accept() call stops blocking and a socket has been received. If you need to send any greeting or initial message, do it here.

def connectionLost(self, reason): (source)

Called when the connection is shut down.

Clear any circular references here, and any external references to this Protocol. The connection has been closed.

def timeoutConnection(self): (source)

Called when the connection times out.

Override to define behavior other than dropping the connection.

def lineReceived(self, line): (source)

Override this for when each line is received.

ParameterslineThe line which was received with the delimiter removed. (type: bytes)
def processCommand(self, cmd, *params): (source)
Undocumented
def getDTPPort(self, factory): (source)

Return a port for passive access, using self.passivePortRange attribute.

def ftp_USER(self, username): (source)

First part of login. Get the username the peer wants to authenticate as.

def ftp_PASS(self, password): (source)

Second part of login. Get the password the peer wants to authenticate with.

def ftp_PASV(self): (source)

Request for a passive connection

from the rfc:

   This command requests the server-DTP to "listen" on a data port
   (which is not its default data port) and to wait for a connection
   rather than initiate one upon receipt of a transfer command.  The
   response to this command includes the host and port address this
   server is listening on.
def ftp_PORT(self, address): (source)
Undocumented
def _encodeName(self, name): (source)

Encode name to be sent over the wire.

This encodes unicode objects as UTF-8 and leaves bytes as-is.

As described by RFC 3659 section 2.2:

   Various FTP commands take pathnames as arguments, or return
   pathnames in responses. When the MLST command is supported, as
   indicated in the response to the FEAT command, pathnames are to be
   transferred in one of the following two formats.

       pathname = utf-8-name / raw
       utf-8-name = <a UTF-8 encoded Unicode string>
       raw = <any string that is not a valid UTF-8 encoding>

   Which format is used is at the option of the user-PI or server-PI
   sending the pathname.
ParametersnameName to be encoded. (type: bytes or unicode)
ReturnsWire format of name. (type: bytes)
def ftp_LIST(self, path=''): (source)

This command causes a list to be sent from the server to the passive DTP. If the pathname specifies a directory or other group of files, the server should transfer a list of files in the specified directory. If the pathname specifies a file then the server should send current information on the file. A null argument implies the user's current working or default directory.

def ftp_NLST(self, path): (source)

This command causes a directory listing to be sent from the server to the client. The pathname should specify a directory or other system-specific file group descriptor. An empty path implies the current working directory. If the path is non-existent, send nothing. If the path is to a file, send only the file name.

ParameterspathThe path for which a directory listing should be returned. (type: str)
Returnsa Deferred which will be fired when the listing request is finished. (type: Deferred)
def ftp_CWD(self, path): (source)
Undocumented
def ftp_CDUP(self): (source)
Undocumented
def ftp_PWD(self): (source)
Undocumented
def ftp_RETR(self, path): (source)

This command causes the content of a file to be sent over the data transfer channel. If the path is to a folder, an error will be raised.

ParameterspathThe path to the file which should be transferred over the data transfer channel. (type: str)
Returnsa Deferred which will be fired when the transfer is done. (type: Deferred)
def ftp_STOR(self, path): (source)

STORE (STOR)

This command causes the server-DTP to accept the data transferred via the data connection and to store the data as a file at the server site. If the file specified in the pathname exists at the server site, then its contents shall be replaced by the data being transferred. A new file is created at the server site if the file specified in the pathname does not already exist.

def ftp_SIZE(self, path): (source)

File SIZE

The FTP command, SIZE OF FILE (SIZE), is used to obtain the transfer size of a file from the server-FTP process. This is the exact number of octets (8 bit bytes) that would be transmitted over the data connection should that file be transmitted. This value will change depending on the current STRUcture, MODE, and TYPE of the data connection or of a data connection that would be created were one created now. Thus, the result of the SIZE command is dependent on the currently established STRU, MODE, and TYPE parameters.

The SIZE command returns how many octets would be transferred if the file were to be transferred using the current transfer structure, mode, and type. This command is normally used in conjunction with the RESTART (REST) command when STORing a file to a remote server in STREAM mode, to determine the restart point. The server-PI might need to read the partially transferred file, do any appropriate conversion, and count the number of octets that would be generated when sending the file in order to correctly respond to this command. Estimates of the file transfer size MUST NOT be returned; only precise information is acceptable.

http://tools.ietf.org/html/rfc3659

def ftp_MDTM(self, path): (source)

File Modification Time (MDTM)

The FTP command, MODIFICATION TIME (MDTM), can be used to determine when a file in the server NVFS was last modified. This command has existed in many FTP servers for many years, as an adjunct to the REST command for STREAM mode, thus is widely available. However, where supported, the "modify" fact that can be provided in the result from the new MLST command is recommended as a superior alternative.

http://tools.ietf.org/html/rfc3659

def ftp_TYPE(self, type): (source)

REPRESENTATION TYPE (TYPE)

The argument specifies the representation type as described in the Section on Data Representation and Storage. Several types take a second parameter. The first parameter is denoted by a single Telnet character, as is the second Format parameter for ASCII and EBCDIC; the second parameter for local byte is a decimal integer to indicate Bytesize. The parameters are separated by a <SP> (Space, ASCII code 32).

def type_A(self, code): (source)
Undocumented
def type_I(self, code): (source)
Undocumented
def type_UNKNOWN(self, code): (source)
Undocumented
def ftp_SYST(self): (source)
Undocumented
def ftp_STRU(self, structure): (source)
Undocumented
def ftp_MODE(self, mode): (source)
Undocumented
def ftp_MKD(self, path): (source)
Undocumented
def ftp_RMD(self, path): (source)
Undocumented
def ftp_DELE(self, path): (source)
Undocumented
def ftp_NOOP(self): (source)
Undocumented
def ftp_RNFR(self, fromName): (source)
Undocumented
def ftp_RNTO(self, toName): (source)
Undocumented
def ftp_FEAT(self): (source)

Advertise the features supported by the server.

http://tools.ietf.org/html/rfc2389

def ftp_OPTS(self, option): (source)

Handle OPTS command.

http://tools.ietf.org/html/draft-ietf-ftpext-utf-8-option-00

def ftp_QUIT(self): (source)
Undocumented
def cleanupDTP(self): (source)

Call when DTP connection exits

API Documentation for Twisted, generated by pydoctor at 2018-07-14 04:53:34.