SSH and telnet to localhost using python

问题

I am new to python and if the question is very nooby i apologize. Simply put i need to write a script that connects to remote via ssh then telnets to localhost and execute a command on a shell there.

I am using Python 2.4.3. I have read alot of similar questions here , and alot of people suggest to use modules such as Paramiko, Pexpect etc. However this is out of question - i am supposed to use only "native" 2.4.3 libraries. I have tried messing around with subprocess module and i have managed to connect to remote shell (however i need to provide a password - and i would like to avoid that by providing a password in script for example) - but still i need to do a telnet to localhost and execute few commands on a different shell.

Could someone be so kind and give me some hints? Thanks in advance.

TL;DR I am looking for python alternative to this bash command :

./sshpass -p password ssh username@$ip -t "(sleep 1;echo "command" ; sleep 1) | telnet localhost $port;exit;bash" >> testing.txt

回答1:

after a simple search:

telnet: link

import getpass
import sys
import telnetlib

HOST = "hostname"

user = raw_input("Enter your remote account: ")

password = getpass.getpass()

tn = telnetlib.Telnet(HOST)

tn.read_until("login: ")

tn.write(user + "\n")

if password:
    tn.read_until("Password: ")
    tn.write(password + "\n")

tn.write("ls\n")

tn.write("exit\n")

print tn.read_all()

ssh: link

import pxssh
import getpass
try:                                                            
    s = pxssh.pxssh()
    hostname = raw_input('hostname: ')
    username = raw_input('username: ')
    password = getpass.getpass('password: ')
    s.login (hostname, username, password)
    s.sendline ('uptime')   # run a command
    s.prompt()             # match the prompt
    print s.before          # print everything before the prompt.
    s.sendline ('ls -l')
    s.prompt()
    print s.before
    s.sendline ('df')
    s.prompt()
    print s.before
    s.logout()
except pxssh.ExceptionPxssh, e:
    print "pxssh failed on login."
    print str(e)

来源：https://stackoverflow.com/questions/28295501/ssh-and-telnet-to-localhost-using-python

标签

python

shell

ssh

telnet