FTPES - FTP over explicit TLS/SSL in Python

问题:

I need a python client to do FTPES (explicit), does anyone has experience with any python package that can do this.

I am not able to do this in python, but can connect to FTP server using tools like FileZilla

Thanks

回答1:

FTP-SSL Explicit is well supported by native Python. After setting up the connection, you can use all the standard ftplib commands. More can be found at: http://docs.python.org/2/library/ftplib.html#ftplib.FTP_TLS

Here's a basic example for downloading a file:

from ftplib import FTP_TLS
ftps = FTP_TLS('ftp.MySite.com')
ftps.login('testuser', 'testpass')           # login anonymously before securing control channel
ftps.prot_p()          # switch to secure data connection.. IMPORTANT! Otherwise, only the user and password is encrypted and not all the file data.
ftps.retrlines('LIST')

filename = 'remote_filename.bin'
print 'Opening local file ' + filename
myfile = open(filename, 'wb')

ftps.retrbinary('RETR %s' % filename, myfile.write)

ftps.close()

回答2:

For me this worked: (login after auth). Taken from Nullege. They seem to be tests for ftplib.

self.client = ftplib.FTP_TLS(timeout=10)
self.client.connect(self.server.host, self.server.port)

# enable TLS
self.client.auth()
self.client.prot_p()

self.client.login(user,pass)

回答3:

If you can use an sftp client, it is provided with paramiko... however, sftp and ftp over ssl (ftps) are different...

import paramiko as pm
import socket
# sftp client...
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.settimeout(20)
sock.connect((hostname, port))
trans = pm.Transport(sock)
trans.connect(hostkey=None ,username=username, password=password, pkey=None)
chan = trans.open_session()
chan.get_pty()
chan.invoke_shell()
sftp = pm.SFTP.from_transport(trans)

My googling indicates that ftp over ssl might be available in ftplib, although I haven't tried this mechanism myself... the FTP_TLS method was only added in python 2.7

回答4:

Standard ftplib does contain everything you need for ftpes (ftps explicit) connection. I didn't find easy way to make implicit connections.

See: http://docs.python.org/2/library/ftplib.html#ftplib.FTP_TLS