CODEWITHSUNDEEP
pythontelnetlib
slappyjam
slappyjam

Reputation: 69

Using Python telnet lib w/o logout command

I am trying to use python's telnetlib module to get information from a remote device. Unfortunately, it looks like the remote device does not have a "logout" type of command. So you have to manually close the connection with CTRL-] (when manually telnetting). I tried using Telnet.close() but doesn't seem to return any data.

Suggestions?

HOST = "172.16.7.37"
user = "Netcrypt"
password = "Netcrypt"

tn = telnetlib.Telnet(HOST)

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

tn.write("session \n")

print tn.read_until("NC_HOST> ")

tn.close()

Upvotes: 1

Views: 4891

Answers (2)

Jason LeBrun
Jason LeBrun

Reputation: 13293

Have you tried writing the ASCII character for CTRL+] to the telnet connection?

tn.write('\x1d')

Upvotes: 2

slappyjam
slappyjam

Reputation: 69

I ended up not needing any of that. The deal was I had to read to the prompt, issue my command, read until the next prompt. Never needed to read_all().

Here's the working code:

import telnetlib

HOST = "172.16.7.37"
user = "Netcrypt"
password = "Netcrypt"

tn = telnetlib.Telnet(HOST)

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

    tn.read_until('NC_HOST>')

    tn.write("session\n")

    data = tn.read_until('NC_HOST>')

print data

Upvotes: 0

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