Add pyftpdlib for future ftp unit tests....

third_party/pyftpdlib/demo/md5_ftpd.py

+#!/usr/bin/env python
+# md5_ftpd.py
+
+"""A basic ftpd storing passwords as hash digests (platform independent).
+"""
+
+import md5
+import os
+
+from pyftpdlib import ftpserver
+
+
+class DummyMD5Authorizer(ftpserver.DummyAuthorizer):
+
+    def validate_authentication(self, username, password):
+        hash = md5.new(password).hexdigest()
+        return self.user_table[username]['pwd'] == hash
+
+if __name__ == "__main__":
+    # get a hash digest from a clear-text password
+    hash = md5.new('12345').hexdigest()
+    authorizer = DummyMD5Authorizer()
+    authorizer.add_user('user', hash, os.getcwd(), perm='elradfmw')
+    authorizer.add_anonymous(os.getcwd())
+    ftp_handler = ftpserver.FTPHandler
+    ftp_handler.authorizer = authorizer
+    address = ('', 21)
+    ftpd = ftpserver.FTPServer(address, ftp_handler)
+    ftpd.serve_forever()