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#!/usr/bin/env python
# Copyright (C) 2003-2007 Robey Pointer <robeypointer@gmail.com>
#
# This file is part of paramiko.
#
# Paramiko is free software; you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation; either version 2.1 of the License, or (at your option)
# any later version.
#
# Paramiko 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License
# along with Paramiko; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
# based on code provided by raymond mosteller (thanks!)
import base64
import getpass
import os
import socket
import sys
import traceback
import paramiko
# setup logging
paramiko.util.log_to_file("demo_sftp.log")
# Paramiko client configuration
UseGSSAPI = True # enable GSS-API / SSPI authentication
DoGSSAPIKeyExchange = True
Port = 22
# get hostname
username = ""
if len(sys.argv) > 1:
hostname = sys.argv[1]
if hostname.find("@") >= 0:
username, hostname = hostname.split("@")
else:
hostname = input("Hostname: ")
if len(hostname) == 0:
print("*** Hostname required.")
sys.exit(1)
if hostname.find(":") >= 0:
hostname, portstr = hostname.split(":")
Port = int(portstr)
# get username
if username == "":
default_username = getpass.getuser()
username = input("Username [%s]: " % default_username)
if len(username) == 0:
username = default_username
if not UseGSSAPI:
password = getpass.getpass("Password for %s@%s: " % (username, hostname))
else:
password = None
# get host key, if we know one
hostkeytype = None
hostkey = None
try:
host_keys = paramiko.util.load_host_keys(os.path.expanduser("~/.ssh/known_hosts"))
except IOError:
try:
# try ~/ssh/ too, because windows can't have a folder named ~/.ssh/
host_keys = paramiko.util.load_host_keys(
os.path.expanduser("~/ssh/known_hosts")
)
except IOError:
print("*** Unable to open host keys file")
host_keys = {}
if hostname in host_keys:
hostkeytype = host_keys[hostname].keys()[0]
hostkey = host_keys[hostname][hostkeytype]
print("Using host key of type %s" % hostkeytype)
# now, connect and use paramiko Transport to negotiate SSH2 across the connection
try:
t = paramiko.Transport((hostname, Port))
t.connect(
hostkey,
username,
password,
gss_host=socket.getfqdn(hostname),
gss_auth=UseGSSAPI,
gss_kex=DoGSSAPIKeyExchange,
)
sftp = paramiko.SFTPClient.from_transport(t)
# dirlist on remote host
dirlist = sftp.listdir(".")
print("Dirlist: %s" % dirlist)
# copy this demo onto the server
try:
sftp.mkdir("demo_sftp_folder")
except IOError:
print("(assuming demo_sftp_folder/ already exists)")
with sftp.open("demo_sftp_folder/README", "w") as f:
f.write("This was created by demo_sftp.py.\n")
with open("demo_sftp.py", "r") as f:
data = f.read()
sftp.open("demo_sftp_folder/demo_sftp.py", "w").write(data)
print("created demo_sftp_folder/ on the server")
# copy the README back here
with sftp.open("demo_sftp_folder/README", "r") as f:
data = f.read()
with open("README_demo_sftp", "w") as f:
f.write(data)
print("copied README back here")
# BETTER: use the get() and put() methods
sftp.put("demo_sftp.py", "demo_sftp_folder/demo_sftp.py")
sftp.get("demo_sftp_folder/README", "README_demo_sftp")
t.close()
except Exception as e:
print("*** Caught exception: %s: %s" % (e.__class__, e))
traceback.print_exc()
try:
t.close()
except:
pass
sys.exit(1)
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