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telnet.py
58 lines (52 loc) · 1.59 KB
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telnet.py
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import pexpect
import logging
import threading
import re
logging.basicConfig(filename='ingress.log', level=logging.DEBUG,
format='%(asctime)s,%(threadName)-10s: %(message)s')
logger = logging.getLogger(__name__)
handler = logging.FileHandler('ingress.log')
logger.addHandler(handler)
class TelnetSession:
def __init__(self, ip, user, password):
self.ip = ip
self.user = user
self.password = password
self._login()
self.l = threading.Lock()
self._getHostName()
def writeCmd(self, cmd):
logging.debug(cmd)
self.l.acquire()
cmd = '\n'
self.pe.sendline(cmd)
try:
self.pe.expect (self.prompt)
except:
logging.debug("Exception: cmd:" + cmd)
logging.debug(str(self.pe))
result = self.pe.before
logging.debug(result)
self.l.release()
return result
def connect(self):
if self.pe.isalive():
self.pe.close()
self._login()
self._getHostName()
def _login(self):
self.pe = pexpect.spawn ("telnet " + self.ip)
self.pe.expect('login:')
self.pe.sendline (self.user)
self.pe.expect ('Password:')
self.pe.sendline (self.password)
self.pe.expect ('> ')
def _getHostName(self):
self.pe.sendline ("system show host-name")
self.pe.expect ('> ')
try:
searchObj = re.search(r'(User) \| (\w+)', self.pe.before)
except:
self.prompt = '> '
finally:
self.prompt = searchObj.group(2)