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#!/usr/bin/env python
# -*- coding: utf-8 -*-
#
# TODO:
# - check if everything is filled in (computers, params, preparation)
# - improve scoring
# - test
# - switch to a real SSH/SFTP client to properly handle filenames
instructions = {
'si': """
Ustvari dva navidezna računalnika s slikama diskov
- SimpleArbiterExam s sliko diska simpleArbiterDhcp in
SmallStudent s slikama diska student-entrance3
in smallstudent-personal.
Drugi razdelek na sliki smallstudent-personal priklopi na imenik {mntdir}
Na SimpleArbiterExam se lahko prijaviš z uporabniškim imenom tester in geslom test.
Na SmallStudentExam se lahko prijaviš kot root z geslom kaboom.
Poskrbi, da bo SmallStudent s SimpleArbiter dostopen na naslovu {testip}.
Na SmallStudent ustvari uporabnika {testuser} z geslom {passwd}.
Na smallstudent-personal je nekje skrita
datoteka, ki vsebuje niz {magicstr}.
Skopiraj jo v domači imenik {testuser} in preimenuj tako, da vse znake 'O' v imenu zamenjaš z 'I'.
Pazi, da nobena druga datoteka v domačem imeniku v svojem imenu ne bo vsebovala "I".
Poskrbi, da bo lastnik {testuser}, skupina pa naj ostane nespremenjena.
Brati naj jo ima pravico samo lastnik, pisati lastnik in skupina, poganjati nihče.
""",
'en': '''
''',
}
instructions = {'si': 'Potrpite.', 'en': 'Have patience.'}
computers = {
'SimpleArbiter': {
'disks': [
{
'name': 'simpleArbiterEntrance',
},
],
'network_interfaces': [
{
'network': 'net1',
},
{
'network': 'net2',
},
],
'flavor': 'm1.tiny',
'config_drive': False,
},
'SmallStudent': {
'disks': [
{
'name': 'student-entrance4',
# 'parts': [{'dev': 'sda1', 'path': '/'}],
},
{
'name': 'smallstudent-personal',
'parts': [{'dev': 'sdb1', 'path': '/media'}, {'dev': 'sdb2', 'path': '/mnt'}]
}
],
'network_interfaces': [
{
'network': 'net2',
},
],
'flavor': 'm1.tiny',
'config_drive': False,
}
}
networks = {
'net1': {
'public': True,
},
'net2': {
'public': False,
}
}
params_meta = {
'testip': {
'descriptions': {
'si': 'IP SmallStudent',
'en': 'IP SmallStudent',
},
'w': False,
'public': True,
'type': 'IP',
'generated': True,
},
'testuser': {
'descriptions': {
'si': 'Uporabnik na SmallStudent',
'en': 'Username on SmallStudent',
},
'w': False,
'public': True,
'type': 'username',
'generated': True,
},
'passwd': {
'descriptions': {
'si': 'Geslo na SmallStudent',
'en': 'Password on SmallStudent',
},
'w': False,
'public': True,
'type': None,
'generated': True,
},
'mntdir': {
'descriptions': {
'si': 'imenik za priklop diska',
'en': 'mountpoint',
},
'w': False,
'public': True,
'type': 'dirname',
'generated': True,
},
'magicstr' : {
'descriptions': {
'si': 'Niz v iskani datoteki',
'en': 'String in the file you need to find',
},
'w': False,
'public': True,
'type': None,
'generated': True,
},
'rndseed': {
'descriptions': {
'si': 'random seed za skrito datoteko',
'en': 'random seed for hiding the file',
},
'w': False,
'public': False,
'type': None,
'generated': True,
},
}
def task(testip, testuser, passwd, mntdir, magicstr):
import collections
from pexpect import pxssh
commands = [
('home_ls', 'ls ~/'),
('dst_file_contents', 'cat ~/*I*.txt'),
('dst_ls', 'ls -l ~/*I*.txt'),
('mnt', 'mount'),
]
results = collections.defaultdict(str)
try:
s = pxssh.pxssh(encoding='utf-8')
s.login(testip, testuser, passwd)
results['ssh'] = True
for test, command in commands:
s.sendline(command)
s.prompt()
if test:
results[test] = s.before
s.logout()
except Exception as ex:
results['ssh'] = str(ex)
return results
def gen_params(user_id, params_meta):
import random
params = dict()
r = random.Random(user_id)
params['testip'] = kpov_util.IPv4_addr_gen(r,
network = '10.94.80.0/19', n_generated=1)[0]
params['testuser'] = kpov_util.default_generators['username'](r)
params['passwd'] = kpov_util.alnum_gen(r, 8)
params['magicstr'] = "".join([r.choice("qwerztlpoQWERTPOL") for i in range(10)])
params['mntdir'] = "/" + kpov_util.default_generators['filename'](r)
params['rndseed'] = kpov_util.alnum_gen(r, 8)
return params
def task_check(results, params):
import os
import re
hints = []
score = 0
if results['ssh'] is not True:
hints += ['ssh failed: ' + results['ssh']]
hidden_contents = params['magicstr']
r = random.Random(params['rndseed'])
dstfile = "".join([r.choice("qQoOp") for i in range(64)]) + "I.txt"
dstfile = dstfile.replace('O', 'I')
for i in range(1000):
start = "".join([r.choice(["po", "p0", "no", "ko", "fo", "qo"]) for i in range(20)])
mid = "".join([r.choice("uiasdfghjkyxcvbnm1234567890ASDFGHJKYZXCVBNM") for i in range(60)])
end = r.choice(["lz", "1z", "Iz", "iz", "l2", "I2", "12"])
#if start[:2] == "po" and end == "lz":
# start = "po"
# mid = "kaka"
x = start + mid + end
hidden_contents += x + "\r\n"
expected_contents = hidden_contents
#expected_contents = re.sub(r"^po.*lz\r$",
# r"pokakalz\r",
# hidden_contents,
# re.MULTILINE)
expected_contents = "cat ~/*I*.txt\r\n".format(dstfile) + expected_contents
if results["dst_file_contents"] == expected_contents:
score += 3
else:
diff_pos = (0, "")
for i, c in enumerate(results["dst_file_contents"]):
if len(expected_contents) < i or c != expected_contents[i]:
start = max(0, i-10)
end = min(len(expected_contents), len(results["dst_file_contents"]), i+20)
diff_pos = (i, results["dst_file_contents"][start:end])
break
hints += ["wrong file contents\n" + str(diff_pos[1])]
#hints += ["wrong file contents"]
params['dstfile'] = dstfile
expected_dst_ls = "ls -l ~/\\*I\\*.txt\r\n-rw--w---- 1 {testuser} bilbo .*{dstfile}\r\n".format(**params)
if re.match(expected_dst_ls, results["dst_ls"]):
score += 2
else:
hints += ["missing file or wrong user/permissions\n" + results["dst_ls"] + "\n" + expected_dst_ls]
if results["home_ls"].find(params['dstfile']) > -1:
score += 2
expected_mnts = [
"/dev/sdb2 on {mntdir} type ext4".format(**params),
"sysfs on /sys type sysfs (rw,nosuid,nodev,noexec,relatime)",
"proc on /proc type proc (rw,nosuid,nodev,noexec,relatime)",
"udev on /dev type devtmpfs (rw,nosuid,relatime",
"/dev/sda1 on / type ext4 (rw,relatime,errors=remount-ro,data=ordered)",]
if all([results["mnt"].find(expected_mnt) > -1 for expected_mnt in expected_mnts]):
score += 3
else:
hints += ["missing or wrong mount\n"]
return score, hints
def prepare_disks(templates, task_params, global_params):
import random
import os
#print "Haha!"
#print params
#print templates
d = templates['smallstudent-personal']
# first create the file contents to make it easyer to check.
hidden_contents = task_params['magicstr']
r = random.Random(task_params['rndseed'])
dstfile = "".join([r.choice("qQoOp") for i in range(64)]) + "I.txt"
for i in range(1000):
x = "".join([r.choice(["po", "p0", "no", "ko", "fo", "qo"]) for i in range(20)])
x += "".join([r.choice("uiasdfghjkyxcvbnm1234567890ASDFGHJKYZXCVBNM") for i in range(60)])
x += r.choice(["lz", "1z", "Iz", "iz", "l2", "I2", "12"])
hidden_contents += x + "\n"
# create hidden file
dir_list = ['Qlipper', 'Thunar', 'blender', 'autostart', 'kazam', 'mc', 'netsurf', 'pulse', 'qupzilla', 'radare2', 'teamviewer', 'texstudio', 'vlc']
ending_list = ['rc', '.conf', '', '.txt']
start_list = ['net', 'dev', 'doc', 'lib', 'time', 'conf']
for i in range(20):
start_list.append("".join([r.choice("qQoOp") for i in range(64)]) + "O")
r.shuffle(dir_list)
file_letters = ["mod", "co"]
d.mkdir('/mnt/.hideme')
d.mkdir('/media/.hideme')
for potential_dir in dir_list:
try:
potential_dir1 = os.path.join('/mnt/.hideme', potential_dir)
potential_dir2 = os.path.join('/media/.hideme', potential_dir)
d.mkdir(potential_dir1)
d.chown(1001, 1001, potential_dir1)
d.mkdir(potential_dir2)
d.chown(1001, 1001, potential_dir2)
except:
pass
rndstr2 = dstfile
for i in range(r.randint(2, 20)):
hidden_file_name1 = os.path.join(potential_dir1,
rndstr2)
hidden_file_name2 = os.path.join(potential_dir2,
rndstr2)
d.write(hidden_file_name1, hidden_contents)
d.chown(1001, 1001, hidden_file_name1)
file_letters = ["stamp", "", "dev", "re"]
hidden_contents = "".join([r.choice("asdfghjkyxcvbnm1234567890 \n") for j in range(10000)])
d.write(hidden_file_name2, hidden_contents)
d.chown(1001, 1001, hidden_file_name2)
rndstr2 = r.choice(start_list) + \
r.choice(file_letters) + r.choice(ending_list)
file_letters = file_letters + ["mod", "co"]
# TODO create some additional files
# write_default_config(templates['simpleArbiterDhcpGW'], global_params)
# finish here
# rename
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