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#!/usr/bin/env python
# -*- coding: utf-8 -*-
# kpov_random_helpers should be imported by add_assignment.py
instructions = {
'si':u"""
Postavi dva navidezna računalnika - SimpleArbiter z diska SimpleArbiterVPN ter
VPNClient, ki jima nastavite pravilne mrežne nastavitve (medsebojna povezava in povezava na splet).
Na oba računalnika namestite OpenVPN in program za nadzor nad virtualnimi napravami (s katerim kreirate napravo tap).
Strežnik SimpleArbiterVPN naj generira skupno skrivnost (*.key), ki jo na VPNCLient uporabite skupaj z konfiguracijsko
datoteko za OpenVPN povezavo. Nato poskrbite, da bo VPNClient na navideznem omrežju prek NFS omogočil
dostop do imenika /home/test/IME_IMENIKA, pri čemer IME_IMENIKA preberite na SimpleArbiter.
V ta imenik skopirajte datoteke, ki so prek SMB dostopne na SimpleArbiter.
"""
}
computers = {
'SimpleArbiter': {
'disks': [
{ 'name': 'SimpleArbiterVPN',
# attempt automount
},
#{ 'name': 'CDROM',
# 'options': {'readonly': True},
# 'parts': [{'dev': 'b1', 'path': '/cdrom'}],
#},
],
'network_interfaces': [
{
'network': 'test-net'
},
{
'network': 'net1'
}
],
'flavor': 'm1.tiny',
'config_drive': False
},
'VPNClient1': {
'disks': [
{ 'name': 'VPNClient1',
},
#{ 'name': 'CDROM',
# 'options':{'readonly': True},
# 'parts': [],# no parts, no mounting.
#}
],
'network_interfaces': [
{
'network': 'net1'
}
},
'flavor': 'm1.tiny',
'config_drive': False
},
'VPNClient2': {
'disks': [
{ 'name': 'VPNClient2',
},
#{ 'name': 'CDROM',
# 'options':{'readonly': True},
# 'parts': [],# no parts, no mounting.
#}
],
'network_interfaces': [
{
'network': 'net1'
}
},
'flavor': 'm1.tiny',
'config_drive': False
}
}
networks = {
'test-net': {
'public': True
},
# Used for the VPN tunnel
'net1': {
'public': False
}
}
params_meta = {
'IP_SimpleArbiterVPN': {
'descriptions': {
'si': 'Naslov SimpleArbiter'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
},
'DNS_SimpleArbiterVPN': {
'descriptions': {
'si': 'DNS za SimpleArbiter'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
},
'IP_VPNClient1': {
'descriptions': {
'si': 'Naslov VPNClient1'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
},
'DNS_VPNClient1': {
'descriptions': {
'si': 'DNS za VPNClient1'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
},
'IP_VPNClient2': {
'descriptions': {
'si': 'Naslov VPNClient2'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
},
'DNS_VPNClient2': {
'descriptions': {
'si': 'DNS za VPNClient2'
},
'w': False,
'public': True,
'type': 'IP',
'generated': True
}
}
def task(IP_SimpleArbiterVPN, DNS_SimpleArbiterVPN, IP_VPNClient1, DNS_VPNClient1, IP_VPNClient2, DNS_VPNClient2):
import pxssh # Used to set up an SSH connection to a remote machine
#import pexpect # Allows the script to spawn a child application and control it as if a human were typing commands
# the necessary things we need to check if the task was performed correctly
results = dict()
# The login params (these must be used on the machines!)
peer_user = 'student'
peer_passwd = 'vaje'
###
# Sets up the SSH connections to the machines
###
# SimpleArbiter
sA = pxssh.pxssh()
# VPNClient1
sC1 = pxssh.pxssh()
# VPNClient2
sC2 = pxssh.pxssh()
# Logs in to the machines with the default login params
sA.login(
IP_SimpleArbiterVPN,
peer_user,
peer_passwd
)
sC1.login(
IP_VPNClient1,
peer_user,
peer_passwd
)
sC2.login(
IP_VPNClient2,
peer_user,
peer_passwd
)
######
# sA
######
# Make sure NM is not handling eth0
results['SimpleArbiter_nmcli'] = sA.run('nmcli d')
# Get the IP of the network as per a DNS server (used to check if all computers are on the same network)
results['SimpleArbiter_nslookup'] = sA.run('nslookup www.arnes.si')
# Check if the VPN is set up
# Returns 1 if ok, else 0
sA.sendline('ls /sys/class/net/ | grep "tap0"')
sA.prompt()
output = sA.before
output.split('\n')[1]
results['SimpleArbiter_is_VPN_set_up'] = output
# Check if the VPN server is running
# Returns 1 if ok, else 0
sA.sendline('ls /sys/class/net | grep "tun0"')
sA.prompt()
output = sA.before
output.split('\n')[1]
results['SimpleArbiter_is_VPN_running'] = output
# Pings each of the clients
# 10.8.0.6 and 10.8.0.10 are the first two default addresses distributed by OpenVPN
# Will output everything ping outputs (set to ping 3 times)
sA.sendLine('ping -c 3 10.8.0.6')
sA.prompt()
output = sA.before
results['SimpleArbiter_ping_C1'] = output
sA.sendLine('ping -c 3 10.8.0.10')
sA.prompt()
output = sA.before
results['SimpleArbiter_ping_C2'] = output
###
# Check if both clients are connected to the correct VPN
# (check if first 24 bits of IP addr are the same as the server's)
# a.k.a. the YES WE CAN method of checking things
# really, really hoping it has root privileges too
###
### Install nmap
# Check if root
sA.sendline('id -u')
sA.prompt()
uid = sA.before.split('\n')
uid = uid[1].rstrip()
#print uid
# If is isn't root
if ( uid != "0" ):
print "SimpleArbiter user must be root to continue with this step (installing nmap mostly)"
# If it is, we continue
else:
### Install the nmap package
# Check if nmap is already installed
sA.sendline('dpkg-query -W nmap')
sA.prompt()
lines = sA.before.split('\n')
line = lines[1]
# If it isn't
if ( len(line.rstrip()) == 4 ): # returns "nmap\r\n" if package isn't installed
sA.sendline('apt-get install nmap --assume-yes')
# If it is
else:
sA.sendline('')
#sA.wait() # For some reason this hangs
sA.expect(".*#") # Expecting a new line prompt (root's prompt ends with a #)
# Run nmap on the VPN network
sA.sendline('nmap -sP 10.8.0.0/24')
sA.prompt()
results['SimpleArbiter_nmap_results'] = sA.before
######
# sC1
######
results['VPNClient1_nmcli'] = sC1.run('nmcli d')
results['VPNClient1_nslookup'] = sC1.run('nslookup www.arnes.si')
# Ping the VPN server
sC1.sendLine( 'ping -c 3 {0}'.format( DNS_SimpleArbiterVPN ) )
sC1.prompt()
output = sC1.before
results['VPNClient1_ping_VPN_server'] = output
######
# sC2
######
results['VPNClient2_nmcli'] = sC2.run('nmcli d')
results['VPNClient2_nslookup'] = sC2.run('nslookup www.arnes.si')
# Ping the VPN server
sC2.sendLine( 'ping -c 3 {0}'.format( DNS_SimpleArbiterVPN ) )
sC2.prompt()
output = sC2.before
results['VPNClient2_ping_VPN_server'] = output
sA.logout()
sC1.logout()
sC2.logout()
return results
def gen_params(user_id, params_meta):
alpha = "abcdefghijklmnoprstuvzxyqw"
alphaupp = "ABCDEFGHIJKLMNOPRSTUVZQWXY"
alpha2 = ['$','?','!',"%","&"]
alpha3 = ['IT','DH','JF','PO','LZ']
temp = datetime.datetime.now().strftime("%Y%m%d%H%M%S")
hash = ""
for x in temp:
for i in x:
if int(i)<5:
hash+=random.choice(alpha)+alpha2[int(i)]
else:
hash+=random.choice(alphaupp)+alpha3[int(i)-5]
hash+=":"+temp
params = dict()
r = random.Random(user_id)
# IP_NM, DNS_NM, IP_static, DNS_static)
dns_servers = ['193.2.1.66', '193.2.1.72', '8.8.8.8', '8.8.4.4', '208.67.222.222', '208.67.220.220']
net = kpov_random_helpers.IPv4_subnet_gen(r, '172.23.128.0/18', 24)
params['DNS_NM'] = r.choice(dns_servers)
params['IP_NM'], params['IP_static'] = kpov_random_helpers.IPv4_addr_gen(r, net, 2)
params['DNS_static'] = r.choice(dns_servers)
params[user_id] = hash
return params
def task_check(results, params):
import re
#nastavil score na 0 iz -9
score = 0
if results['NM_nslookup'].find('Server:\t\t{0}\r'.format(params['DNS_NM'])) > -1:
score += 3
if results['static_nslookup'].find('Server:\t\t{0}\r'.format(params['DNS_static'])) > -1:
score += 3
if re.search(r'eth0 +802-.*connected', results['NM_nmcli']):
score += 2
if not re.search(r'eth0 +802-.*connected', results['static_nmcli']):
score += 2
# to stran
# score = 0
return score
def prepare_disks(templates, params):
#d = templates['simpleArbiterDhcp']
#guestmount -a d -m /dev/VG/LV -m /dev/sda1:/boot --ro /mnt
#asistent je pocasnela :)
pass
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