利用Python Paramiko开发linux堡垒机
#!/usr/bin/env pythonimport base64
from binascii import hexlify
import getpass
import os
import select
import socket
import sys
import threading
import time
import traceback
import paramiko
import interactive
def agent_auth(transport, username):
"""
Attempt to authenticate to the given transport using any of the private
keys available from an SSH agent.
"""
agent = paramiko.Agent()
agent_keys = agent.get_keys()
if len(agent_keys) == 0:
return
for key in agent_keys:
print 'Trying ssh-agent key %s' % hexlify(key.get_fingerprint()),
try:
transport.auth_publickey(username, key)
print '... success!'
return
except paramiko.SSHException:
print '... nope.'
def manual_auth(username, hostname,pw):
'''default_auth = 'p'
auth = raw_input('Auth by (p)assword, (r)sa key, or (d)ss key? [%s] ' % default_auth)
if len(auth) == 0:
auth = default_auth
if auth == 'r':
default_path = os.path.join(os.environ['HOME'], '.ssh', 'id_rsa')
path = raw_input('RSA key [%s]: ' % default_path)
if len(path) == 0:
path = default_path
try:
key = paramiko.RSAKey.from_private_key_file(path)
except paramiko.PasswordRequiredException:
password = getpass.getpass('RSA key password: ')
key = paramiko.RSAKey.from_private_key_file(path, password)
t.auth_publickey(username, key)
elif auth == 'd':
default_path = os.path.join(os.environ['HOME'], '.ssh', 'id_dsa')
path = raw_input('DSS key [%s]: ' % default_path)
if len(path) == 0:
path = default_path
try:
key = paramiko.DSSKey.from_private_key_file(path)
except paramiko.PasswordRequiredException:
password = getpass.getpass('DSS key password: ')
key = paramiko.DSSKey.from_private_key_file(path, password)
t.auth_publickey(username, key)
else:
pw = getpass.getpass('Password for %s@%s: ' % (username, hostname))
t.auth_password(username, pw)'''
t.auth_password(username,pw)
# setup logging
paramiko.util.log_to_file('demo.log')
username = ''
if len(sys.argv) > 1:
hostname = sys.argv
if hostname.find('@') >= 0:
username, hostname = hostname.split('@')
else:
hostname = raw_input('Hostname: ')
if len(hostname) == 0:
print '*** Hostname required.'
sys.exit(1)
port = 22
if hostname.find(':') >= 0:
hostname, portstr = hostname.split(':')
port = int(portstr)
# now connect
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.connect((hostname, port))
except Exception, e:
print '*** Connect failed: ' + str(e)
traceback.print_exc()
sys.exit(1)
try:
t = paramiko.Transport(sock)
try:
t.start_client()
except paramiko.SSHException:
print '*** SSH negotiation failed.'
sys.exit(1)
try:
keys = paramiko.util.load_host_keys(os.path.expanduser('~/.ssh/known_hosts'))
except IOError:
try:
keys = paramiko.util.load_host_keys(os.path.expanduser('~/ssh/known_hosts'))
except IOError:
print '*** Unable to open host keys file'
keys = {}
# check server's host key -- this is important.
key = t.get_remote_server_key()
if not keys.has_key(hostname):
print '*** WARNING: Unknown host key!'
elif not keys.has_key(key.get_name()):
print '*** WARNING: Unknown host key!'
elif keys != key:
print '*** WARNING: Host key has changed!!!'
sys.exit(1)
else:
print '*** Host key OK.'
# get username
'''if username == '':
default_username = getpass.getuser()
username = raw_input('Username [%s]: ' % default_username)
if len(username) == 0:
username = default_username'''
#changed by xpleaf at 2015.10.9
username = sys.argv
password = sys.argv
sa_username = sys.argv
agent_auth(t, username)
if not t.is_authenticated():
manual_auth(username, hostname,password)
if not t.is_authenticated():
print '*** Authentication failed. :('
t.close()
sys.exit(1)
chan = t.open_session()
chan.get_pty()
chan.invoke_shell()
print '*** Here we go!'
interactive.interactive_shell(chan,hostname,username,sa_username)
chan.close()
t.close()
except Exception, e:
print '*** Caught exception: ' + str(e.__class__) + ': ' + str(e)
traceback.print_exc()
try:
t.close()
except:
pass
sys.exit(1)
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