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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.,
# 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA.
import base64
from binascii import hexlify
import os
import socket
import sys
import threading
import traceback
import paramiko
from paramiko.py3compat import b, u, decodebytes
# setup logging
paramiko.util.log_to_file('demo_server.log')
host_key = paramiko.RSAKey(filename='test_rsa.key')
#host_key = paramiko.DSSKey(filename='test_dss.key')
print('Read key: ' + u(hexlify(host_key.get_fingerprint())))
class Server (paramiko.ServerInterface):
# 'data' is the output of base64.encodestring(str(key))
# (using the "user_rsa_key" files)
data = (b'AAAAB3NzaC1yc2EAAAABIwAAAIEAyO4it3fHlmGZWJaGrfeHOVY7RWO3P9M7hp'
b'fAu7jJ2d7eothvfeuoRFtJwhUmZDluRdFyhFY/hFAh76PJKGAusIqIQKlkJxMC'
b'KDqIexkgHAfID/6mqvmnSJf0b5W8v5h2pI/stOSwTQ+pxVhwJ9ctYDhRSlF0iT'
b'UWT10hcuO4Ks8=')
good_pub_key = paramiko.RSAKey(data=decodebytes(data))
def __init__(self):
self.event = threading.Event()
def check_channel_request(self, kind, chanid):
if kind == 'session':
return paramiko.OPEN_SUCCEEDED
return paramiko.OPEN_FAILED_ADMINISTRATIVELY_PROHIBITED
def check_auth_password(self, username, password):
if (username == 'robey') and (password == 'foo'):
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
def check_auth_publickey(self, username, key):
print('Auth attempt with key: ' + u(hexlify(key.get_fingerprint())))
if (username == 'robey') and (key == self.good_pub_key):
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
def get_allowed_auths(self, username):
return 'password,publickey'
def check_channel_shell_request(self, channel):
self.event.set()
return True
def check_channel_pty_request(self, channel, term, width, height, pixelwidth,
pixelheight, modes):
return True
# now connect
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind(('', 2200))
except Exception as e:
print('*** Bind failed: ' + str(e))
traceback.print_exc()
sys.exit(1)
try:
sock.listen(100)
print('Listening for connection ...')
client, addr = sock.accept()
except Exception as e:
print('*** Listen/accept failed: ' + str(e))
traceback.print_exc()
sys.exit(1)
print('Got a connection!')
try:
t = paramiko.Transport(client)
try:
t.load_server_moduli()
except:
print('(Failed to load moduli -- gex will be unsupported.)')
raise
t.add_server_key(host_key)
server = Server()
try:
t.start_server(server=server)
except paramiko.SSHException:
print('*** SSH negotiation failed.')
sys.exit(1)
# wait for auth
chan = t.accept(20)
if chan is None:
print('*** No channel.')
sys.exit(1)
print('Authenticated!')
server.event.wait(10)
if not server.event.isSet():
print('*** Client never asked for a shell.')
sys.exit(1)
chan.send('\r\n\r\nWelcome to my dorky little BBS!\r\n\r\n')
chan.send('We are on fire all the time! Hooray! Candy corn for everyone!\r\n')
chan.send('Happy birthday to Robot Dave!\r\n\r\n')
chan.send('Username: ')
f = chan.makefile('rU')
username = f.readline().strip('\r\n')
chan.send('\r\nI don\'t like you, ' + username + '.\r\n')
chan.close()
except Exception as e:
print('*** Caught exception: ' + str(e.__class__) + ': ' + str(e))
traceback.print_exc()
try:
t.close()
except:
pass
sys.exit(1)
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