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ssh_server.py
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ssh_server.py
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import socket
import paramiko
import threading
import sys
host_key = paramiko.RSAKey(filename='id_rsa')
class Server(paramiko.ServerInterface):
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 == 'vagrant') and (password == 'vagrant'):
return paramiko.AUTH_SUCCESSFUL
return paramiko.AUTH_FAILED
server=sys.argv[1]
ssh_port = int(sys.argv[2])
try:
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
sock.setsockopt(socket.SOL_SOCKET, socket.SO_REUSEADDR, 1)
sock.bind((server, ssh_port))
sock.listen(100)
print '[+] Listening for connection...'
client, addr = sock.accept()
except Exception as e:
print '[-] Listen failed: ' + str(e)
sys.exit(1)
except KeyboardInterrupt:
sys.exit(0)
print '[+] Got a connection!'
try:
ssh_session = paramiko.Transport(client)
ssh_session.add_server_key(host_key)
server = Server()
try:
ssh_session.start_server(server=server)
except paramiko.SSHException as x:
print '[-] SSH negotiation failed.'
chan = ssh_session.accept(20)
print '[+] Authenticated!'
print chan.recv(1024)
chan.send('Welcome to bh_ssh')
while True:
try:
command = raw_input('Enter command: ').strip('\n')
if command != 'exit':
chan.send(command)
print chan.recv(1024) + '\n'
else:
chan.send('exit')
print 'exiting'
ssh_session.close()
raise Exception('exit')
except KeyboardInterrupt:
ssh_session.close()
raise
except Exception as e:
print '[-] Caught exception: ' + str(e)
try:
ssh_session.close()
except:
pass
sys.exit(1)