basic_ftpd.py

#!/usr/bin/env python
# $Id$

#  pyftpdlib is released under the MIT license, reproduced below:
#  ======================================================================
#  Copyright (C) 2007-2013 Giampaolo Rodola' <g.rodola@gmail.com>
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"""A basic FTP server which uses a DummyAuthorizer for managing 'virtual
users', setting a limit for incoming connections.
"""

import os

from pyftpdlib.authorizers import DummyAuthorizer
from pyftpdlib.handlers import FTPHandler
from pyftpdlib.servers import FTPServer


def main():
    # Instantiate a dummy authorizer for managing 'virtual' users
    authorizer = DummyAuthorizer()

    # Define a new user having full r/w permissions and a read-only
    # anonymous user
    #authorizer.add_user('user', '12345', os.getcwd(), perm='elradfmwM')
    #authorizer.add_anonymous(os.getcwd())
    authorizer.add_user('user1', 'password', "/home/user1/", perm='elradfmw') # removed M from perms
    authorizer.add_user('external', 'password', "/media/external", perm='elradfmw') # removed M from perms
    #authorizer.add_user('rootUser', 'password', "/", perm='elradfmw') # root dir.

    # Instantiate FTP handler class
    handler = FTPHandler
    handler.authorizer = authorizer

    # Define a customized banner (string returned when client connects)
    handler.banner = "FTP server for LAN file transfers."

    # Specify a masquerade address and the range of ports to use for
    # passive connections.  Decomment in case you're behind a NAT.
    #handler.masquerade_address = '151.25.42.11'
    #handler.passive_ports = range(60000, 65535)

    # Instantiate FTP server class and listen on 0.0.0.0:2121
    address = ('', 2121)
    server = FTPServer(address, handler)

    # set a limit for connections
    server.max_cons = 25 # was 256, but not needed for a LAN.
    server.max_cons_per_ip = 10 # was five, but 0 is unlimited.

    # start ftp server
    server.serve_forever()

if __name__ == '__main__':
    main()