1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
|
# 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': """
<pre>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.</pre>
""",
'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):
return kpov_util.ssh_test(testip, testuser, passwd, (
('home_ls', 'ls ~/'),
('dst_file_contents', 'cat ~/*I*.txt'),
('dst_ls', 'ls -l ~/*I*.txt'),
('mnt', 'mount'),
))
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)
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])]
params['dstfile'] = dstfile
expected_dst_ls = "-rw--w---- 1 {testuser} bilbo .*{dstfile}".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
# 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 = templates['smallstudent-personal']
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)
|
