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#/*
# * Licensed to the OpenAirInterface (OAI) Software Alliance under one or more
# * contributor license agreements. See the NOTICE file distributed with
# * this work for additional information regarding copyright ownership.
# * The OpenAirInterface Software Alliance licenses this file to You under
# * the OAI Public License, Version 1.1 (the "License"); you may not use this file
# * except in compliance with the License.
# * You may obtain a copy of the License at
# *
# * http://www.openairinterface.org/?page_id=698
# *
# * Unless required by applicable law or agreed to in writing, software
# * distributed under the License is distributed on an "AS IS" BASIS,
# * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# * See the License for the specific language governing permissions and
# * limitations under the License.
# *-------------------------------------------------------------------------------
# * For more information about the OpenAirInterface (OAI) Software Alliance:
# * contact@openairinterface.org
# */
#---------------------------------------------------------------------
# Python for CI of OAI-eNB + COTS-UE
#
# Required Python Version
# Python 3.x
#
# Required Python Package
# pexpect
#---------------------------------------------------------------------
#-----------------------------------------------------------
# Import
#-----------------------------------------------------------
import pexpect # pexpect
import logging
import time # sleep
import re
import subprocess
import sys
#-----------------------------------------------------------
# Class Declaration
#-----------------------------------------------------------
class SSHConnection():
def __init__(self):
self.ssh = ''
self.picocom_closure = False
self.ipaddress = ''
self.username = ''
self.cmd2Results = ''
def disablePicocomClosure(self):
self.picocom_closure = False
def enablePicocomClosure(self):
self.picocom_closure = True
def open(self, ipaddress, username, password):
prompt = "\$"
count = 0
connect_status = False
while count < 4:
self.ssh = pexpect.spawn('ssh -o PubkeyAuthentication=yes {}@{}'.format(username,ipaddress))
# Longer timeout at connection due to asterix slowness
self.ssh.timeout = 25
self.sshresponse = self.ssh.expect(['Are you sure you want to continue connecting (yes/no)?', 'password:', 'Last login', pexpect.EOF, pexpect.TIMEOUT])
if self.sshresponse == 0:
self.ssh.sendline('yes')
self.sshresponse = self.ssh.expect(['password:', username + '@'])
if self.sshresponse == 0:
self.ssh.sendline(password)
self.sshresponse = self.ssh.expect([prompt, 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if self.sshresponse == 0:
count = 10
connect_status = True
else:
logging.warning('self.sshresponse = ' + str(self.sshresponse))
elif self.sshresponse == 1:
self.ssh.sendline(password)
self.sshresponse = self.ssh.expect([prompt, 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if self.sshresponse == 0:
count = 10
connect_status = True
else:
logging.warning('self.sshresponse = ' + str(self.sshresponse))
elif self.sshresponse == 2:
# We directly ended up on the remote server because of pubkey auth
count = 10
connect_status = True
# this expect() seems to be necessary to advance the read buffer until the prompt, or getBefore() will not return the last command
self.sshresponse = self.ssh.expect([prompt])
else:
# debug output
logging.warning(str(self.ssh.before))
logging.warning('self.sshresponse = ' + str(self.sshresponse))
# adding a tempo when failure
if not connect_status:
time.sleep(1)
count += 1
if connect_status:
self.command('unset HISTFILE', prompt, 5, silent=True)
else:
sys.exit('SSH Connection Failed')
self.ipaddress = ipaddress
self.username = username
def cde_check_value(self, commandline, expected, timeout):
logging.info(commandline)
self.ssh.timeout = timeout
self.ssh.sendline(commandline)
expected.append(pexpect.EOF)
expected.append(pexpect.TIMEOUT)
self.sshresponse = self.ssh.expect(expected)
return self.sshresponse
def command(self, commandline, expectedline, timeout, silent=False, resync=False):
if not silent:
logging.info(commandline)
self.ssh.timeout = timeout
# Nasty patch when pexpect output is out of sync.
# Much pronounced when running back-to-back-back oc commands
if resync:
self.ssh.send(commandline)
self.ssh.expect([commandline, pexpect.TIMEOUT])
self.ssh.send('\r\n')
self.sshresponse = self.ssh.expect([expectedline, pexpect.EOF, pexpect.TIMEOUT])
else:
self.ssh.sendline(commandline)
self.sshresponse = self.ssh.expect([expectedline, pexpect.EOF, pexpect.TIMEOUT])
if self.sshresponse == 0:
return 0
elif self.sshresponse == 1:
logging.error('\u001B[1;37;41m Unexpected EOF \u001B[0m')
logging.error('Expected Line : ' + expectedline)
logging.error(str(self.ssh.before))
sys.exit(self.sshresponse)
elif self.sshresponse == 2:
logging.error('\u001B[1;37;41m Unexpected TIMEOUT \u001B[0m')
logging.error('Expected Line : ' + expectedline)
result = re.search('ping |iperf |picocom', str(commandline))
if result is None:
logging.warning(str(self.ssh.before))
sys.exit(self.sshresponse)
else:
return -1
else:
logging.error('\u001B[1;37;41m Unexpected Others \u001B[0m')
logging.error('Expected Line : ' + expectedline)
sys.exit(self.sshresponse)
def command2(self, commandline, timeout, silent=False):
if not silent:
logging.info(commandline)
self.cmd2Results = ''
noHistoryCmd = 'unset HISTFILE; ' + commandline
myHost = self.username + '@' + self.ipaddress
# CAUTION: THIS METHOD IMPLIES THAT THERE ARE VALID SSH KEYS
# BETWEEN THE PYTHON EXECUTOR NODE AND THE REMOTE HOST
# OTHERWISE IT WON'T WORK
lSsh = subprocess.Popen(["ssh", "%s" % myHost, noHistoryCmd],shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
self.cmd2Results = str(lSsh.stdout.readlines())
def command3(self, commandline, timeout, silent=False):
if not silent:
logging.info(commandline)
self.cmd2Results = ''
noHistoryCmd = 'unset HISTFILE; ' + commandline
myHost = self.username + '@' + self.ipaddress
# CAUTION: THIS METHOD IMPLIES THAT THERE ARE VALID SSH KEYS
# BETWEEN THE PYTHON EXECUTOR NODE AND THE REMOTE HOST
# OTHERWISE IT WON'T WORK
lSsh = subprocess.Popen(["ssh", "%s" % myHost, noHistoryCmd],shell=False,stdout=subprocess.PIPE,stderr=subprocess.PIPE)
return lSsh.stdout.readlines()
def close(self):
self.ssh.timeout = 5
self.ssh.sendline('exit')
self.sshresponse = self.ssh.expect([pexpect.EOF, pexpect.TIMEOUT])
self.ipaddress = ''
self.username = ''
if self.sshresponse == 0:
pass
elif self.sshresponse == 1:
if not self.picocom_closure:
logging.warning('\u001B[1;37;41m Unexpected TIMEOUT during closing\u001B[0m')
else:
logging.warning('\u001B[1;37;41m Unexpected Others during closing\u001B[0m')
def copyin(self, ipaddress, username, password, source, destination):
count = 0
copy_status = False
logging.info('scp -r '+ username + '@' + ipaddress + ':' + source + ' ' + destination)
while count < 10:
scp_spawn = pexpect.spawn('scp -r '+ username + '@' + ipaddress + ':' + source + ' ' + destination, timeout = 100)
scp_response = scp_spawn.expect(['Are you sure you want to continue connecting (yes/no)?', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0:
scp_spawn.sendline('yes')
scp_spawn.expect('password:')
scp_spawn.sendline(password)
scp_response = scp_spawn.expect(['\$', 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0:
count = 10
copy_status = True
else:
logging.warning('1 - scp_response = ' + str(scp_response))
elif scp_response == 1:
scp_spawn.sendline(password)
scp_response = scp_spawn.expect(['\$', 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0 or scp_response == 3:
count = 10
copy_status = True
else:
logging.warning('2 - scp_response = ' + str(scp_response))
elif scp_response == 2:
count = 10
copy_status = True
else:
logging.warning('3 - scp_response = ' + str(scp_response))
# adding a tempo when failure
if not copy_status:
time.sleep(1)
count += 1
if copy_status:
return 0
else:
return -1
def copyout(self, ipaddress, username, password, source, destination, silent=False, ignorePermDenied=False):
count = 0
copy_status = False
if not silent:
logging.info('scp -r ' + source + ' ' + username + '@' + ipaddress + ':' + destination)
while count < 4:
scp_spawn = pexpect.spawn('scp -r ' + source + ' ' + username + '@' + ipaddress + ':' + destination, timeout = 100)
scp_response = scp_spawn.expect(['Are you sure you want to continue connecting (yes/no)?', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0:
scp_spawn.sendline('yes')
scp_spawn.expect('password:')
scp_spawn.sendline(password)
scp_response = scp_spawn.expect(['\$', 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0:
count = 10
copy_status = True
elif scp_response == 1 and ignorePermDenied:
logging.warning(f'copyout(): permission denied, not copying file ({source})')
count = 10
copy_status = True
else:
logging.warning('1 - scp_response = ' + str(scp_response))
elif scp_response == 1:
scp_spawn.sendline(password)
scp_response = scp_spawn.expect(['\$', 'Permission denied', 'password:', pexpect.EOF, pexpect.TIMEOUT])
if scp_response == 0 or scp_response == 3:
count = 10
copy_status = True
elif scp_response == 1 and ignorePermDenied:
logging.warning(f'copyout(): permission denied, not copying file ({source})')
count = 10
copy_status = True
else:
logging.warning('2 - scp_response = ' + str(scp_response))
elif scp_response == 2:
count = 10
copy_status = True
else:
logging.warning('3 - scp_response = ' + str(scp_response))
# adding a tempo when failure
if not copy_status:
time.sleep(1)
count += 1
if copy_status:
pass
else:
sys.exit('SCP failed')
def getBefore(self):
return self.ssh.before.decode('utf-8')