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# Copyright (C) 2010-2014 Bastian Kleineidam
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
"""
Define http test support classes for LinkChecker tests.
"""
import os
import time
import threading
from ftplib import FTP
from tests import skip
from . import LinkCheckTest
TIMEOUT = 5
class FtpServerTest(LinkCheckTest):
"""Start/stop an FTP server that can be used for testing."""
def __init__(self, methodName="runTest"):
"""Init test class and store default ftp server port."""
super().__init__(methodName=methodName)
self.host = "localhost"
self.port = None
def setUp(self):
"""Start a new FTP server in a new thread."""
super().setUp()
self.port = start_server(self.host, 0)
self.assertFalse(self.port is None)
def tearDown(self):
"""Send stop request to server."""
try:
stop_server(self.host, self.port)
except Exception:
pass
def start_server(host, port):
def line_logger(self, msg):
if "kill" in msg:
raise KeyboardInterrupt()
try:
from pyftpdlib.authorizers import DummyAuthorizer
from pyftpdlib.handlers import FTPHandler
from pyftpdlib.servers import FTPServer
from pyftpdlib import __ver__ as pyftpdlib_version
except ImportError:
skip("pyftpdlib is not available")
return
authorizer = DummyAuthorizer()
datadir = os.path.join(os.path.dirname(__file__), "data")
authorizer.add_anonymous(datadir)
# Instantiate FTP handler class
ftp_handler = FTPHandler
ftp_handler.authorizer = authorizer
ftp_handler.timeout = TIMEOUT
ftp_handler.logline = line_logger
# Define a customized banner (string returned when client connects)
ftp_handler.banner = "pyftpdlib %s based ftpd ready." % pyftpdlib_version
# Instantiate FTP server class and listen to host:port
address = (host, port)
server = FTPServer(address, ftp_handler)
port = server.address[1]
t = threading.Thread(None, server.serve_forever)
t.start()
# wait for server to start up
tries = 0
while tries < 5:
tries += 1
try:
ftp = FTP()
ftp.connect(host, port, TIMEOUT)
ftp.login()
ftp.close()
break
except Exception:
time.sleep(0.5)
return port
def stop_server(host, port):
"""Stop a running FTP server."""
ftp = FTP()
ftp.connect(host, port, TIMEOUT)
ftp.login()
try:
ftp.sendcmd("kill")
except EOFError:
pass
ftp.close()
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