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# Copyright (c) Twisted Matrix Laboratories.
# See LICENSE for details.
"""
An example of using the FTP client
"""
# Twisted imports
from twisted.protocols.ftp import FTPClient, FTPFileListProtocol
from twisted.internet.protocol import Protocol, ClientCreator
from twisted.python import usage
from twisted.internet import reactor
# Standard library imports
import string
import sys
try:
from cStringIO import StringIO
except ImportError:
from StringIO import StringIO
class BufferingProtocol(Protocol):
"""Simple utility class that holds all data written to it in a buffer."""
def __init__(self):
self.buffer = StringIO()
def dataReceived(self, data):
self.buffer.write(data)
# Define some callbacks
def success(response):
print 'Success! Got response:'
print '---'
if response is None:
print None
else:
print string.join(response, '\n')
print '---'
def fail(error):
print 'Failed. Error was:'
print error
def showFiles(result, fileListProtocol):
print 'Processed file listing:'
for file in fileListProtocol.files:
print ' %s: %d bytes, %s' \
% (file['filename'], file['size'], file['date'])
print 'Total: %d files' % (len(fileListProtocol.files))
def showBuffer(result, bufferProtocol):
print 'Got data:'
print bufferProtocol.buffer.getvalue()
class Options(usage.Options):
optParameters = [['host', 'h', 'localhost'],
['port', 'p', 21],
['username', 'u', 'anonymous'],
['password', None, 'twisted@'],
['passive', None, 0],
['debug', 'd', 1],
]
def run():
# Get config
config = Options()
config.parseOptions()
config.opts['port'] = int(config.opts['port'])
config.opts['passive'] = int(config.opts['passive'])
config.opts['debug'] = int(config.opts['debug'])
# Create the client
FTPClient.debug = config.opts['debug']
creator = ClientCreator(reactor, FTPClient, config.opts['username'],
config.opts['password'], passive=config.opts['passive'])
creator.connectTCP(config.opts['host'], config.opts['port']).addCallback(connectionMade).addErrback(connectionFailed)
reactor.run()
def connectionFailed(f):
print "Connection Failed:", f
reactor.stop()
def connectionMade(ftpClient):
# Get the current working directory
ftpClient.pwd().addCallbacks(success, fail)
# Get a detailed listing of the current directory
fileList = FTPFileListProtocol()
d = ftpClient.list('.', fileList)
d.addCallbacks(showFiles, fail, callbackArgs=(fileList,))
# Change to the parent directory
ftpClient.cdup().addCallbacks(success, fail)
# Create a buffer
proto = BufferingProtocol()
# Get short listing of current directory, and quit when done
d = ftpClient.nlst('.', proto)
d.addCallbacks(showBuffer, fail, callbackArgs=(proto,))
d.addCallback(lambda result: reactor.stop())
# this only runs if the module was *not* imported
if __name__ == '__main__':
run()
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