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#!/usr/bin/python

"""Example script for authentication with Python callback function using an OAuth token"""

from __future__ import print_function

import argparse

import socket

import os

import pwd

import functools

from ssh2.session import Session

USERNAME = pwd.getpwuid(os.geteuid()).pw_name

parser = argparse.ArgumentParser()

parser.add_argument('password', help="User password")

parser.add_argument('oauth', help="OAUTH key to use for authentication")

parser.add_argument('cmd', help="Command to run")

parser.add_argument('--host', dest='host',

default='localhost',

help='Host to connect to')

parser.add_argument('--port', dest='port', default=22, help="Port to connect on", type=int)

parser.add_argument('-u', dest='user', default=USERNAME, help="User name to authenticate as")

def oauth_handler(name, instruction, prompts, password, oauth):

responses = []

for prompt in prompts:

if "Password:" in prompt:

responses.append(password)

if "One-time password (OATH) for" in prompt:

responses.append(oauth)

return responses

def main():

args = parser.parse_args()

callback = functools.partial(oauth_handler,password=args.password,oauth=args.oauth)

sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)

sock.connect((args.host, args.port))

s = Session()

s.handshake(sock)

s.userauth_keyboardinteractive_callback(args.user, callback)

chan = s.open_session()

chan.execute(args.cmd)

size, data = chan.read()

while size > 0:

print(data)

size, data = chan.read()

if __name__ == "__main__":

main()