This repository has been archived by the owner on Jul 28, 2024. It is now read-only.
-
Notifications
You must be signed in to change notification settings - Fork 143
/
blockcheck.py
executable file
·1171 lines (1039 loc) · 52.7 KB
/
blockcheck.py
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
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
508
509
510
511
512
513
514
515
516
517
518
519
520
521
522
523
524
525
526
527
528
529
530
531
532
533
534
535
536
537
538
539
540
541
542
543
544
545
546
547
548
549
550
551
552
553
554
555
556
557
558
559
560
561
562
563
564
565
566
567
568
569
570
571
572
573
574
575
576
577
578
579
580
581
582
583
584
585
586
587
588
589
590
591
592
593
594
595
596
597
598
599
600
601
602
603
604
605
606
607
608
609
610
611
612
613
614
615
616
617
618
619
620
621
622
623
624
625
626
627
628
629
630
631
632
633
634
635
636
637
638
639
640
641
642
643
644
645
646
647
648
649
650
651
652
653
654
655
656
657
658
659
660
661
662
663
664
665
666
667
668
669
670
671
672
673
674
675
676
677
678
679
680
681
682
683
684
685
686
687
688
689
690
691
692
693
694
695
696
697
698
699
700
701
702
703
704
705
706
707
708
709
710
711
712
713
714
715
716
717
718
719
720
721
722
723
724
725
726
727
728
729
730
731
732
733
734
735
736
737
738
739
740
741
742
743
744
745
746
747
748
749
750
751
752
753
754
755
756
757
758
759
760
761
762
763
764
765
766
767
768
769
770
771
772
773
774
775
776
777
778
779
780
781
782
783
784
785
786
787
788
789
790
791
792
793
794
795
796
797
798
799
800
801
802
803
804
805
806
807
808
809
810
811
812
813
814
815
816
817
818
819
820
821
822
823
824
825
826
827
828
829
830
831
832
833
834
835
836
837
838
839
840
841
842
843
844
845
846
847
848
849
850
851
852
853
854
855
856
857
858
859
860
861
862
863
864
865
866
867
868
869
870
871
872
873
874
875
876
877
878
879
880
881
882
883
884
885
886
887
888
889
890
891
892
893
894
895
896
897
898
899
900
901
902
903
904
905
906
907
908
909
910
911
912
913
914
915
916
917
918
919
920
921
922
923
924
925
926
927
928
929
930
931
932
933
934
935
936
937
938
939
940
941
942
943
944
945
946
947
948
949
950
951
952
953
954
955
956
957
958
959
960
961
962
963
964
965
966
967
968
969
970
971
972
973
974
975
976
977
978
979
980
981
982
983
984
985
986
987
988
989
990
991
992
993
994
995
996
997
998
999
1000
#!/usr/bin/env python3
# coding: utf-8
import argparse
import json
import urllib.request
import urllib.parse
import urllib.error
import socket
import ssl
import sys
import os.path
import dns.resolver
import dns.exception
import ipaddress
import ipwhois
'''
=================================
IMPORTANT
Make sure to run this program with --no-report option
if you're editing it, debugging or testing something!
Thank you.
=================================
ВАЖНО
Запускайте программу с опцией --no-report, если
вы редактируете ее, отлаживаете или тестируете!
Спасибо.
=================================
'''
# Configuration
VERSION="0.0.9.8"
SWHOMEPAGE="https://github.com/ValdikSS/blockcheck"
SWUSERAGENT="Blockcheck/" + VERSION + " " + SWHOMEPAGE
dns_records_list = (
# First server in this list should have both A and AAAA records
"rutracker.org", # Blocked by domain name.
"gelbooru.com", # Only several URLs are blocked, main page is not.
"e621.net", # Blocked by domain name. Website is HTTP only.
"danbooru.donmai.us", # Blocked by root URL.
"dailymotion.com", # Blocked by domain name.
"zello.com", # Blocked by domain name.
)
http_list = {
# Parameters:
# status: HTTP response code
# lookfor: Substring to search in HTTP reply body
# ip: IPv4 address. Used only if hostname can't be resolved using Google API.
# ipv6: IPv6 address
# subdomain: This is non-blacklisted subdomain of a blacklisted domain.
# is_blacklisted: True if website is not blacklisted and should be treated so.
'http://pbooru.com/': # This page should open in case of DPI, it's not blocked.
{'status': 200, 'lookfor': 'PoniBooru', 'ip': '104.28.10.65', 'ipv6': '2400:cb00:2048:1::681c:a41'},
'http://pbooru.com/index.php?page=post&s=view&id=303026': # And this should not.
{'status': 200, 'lookfor': 'PoniBooru', 'ip': '104.28.10.65', 'ipv6': '2400:cb00:2048:1::681c:a41'},
'http://furry.booru.org/':
{'status': 200, 'lookfor': 'FurryBooru', 'ip': '104.31.10.182', 'ipv6': '2606:4700:31::681f:ab6'},
'http://furry.booru.org/index.php?page=post&s=view&id=111173':
{'status': 200, 'lookfor': 'FurryBooru', 'ip': '104.31.10.182', 'ipv6': '2606:4700:31::681f:ab6'},
'http://rutracker.org/forum/index.php':
{'status': 200, 'lookfor': 'groupcp.php"', 'ip': '195.82.146.214', 'ipv6': '2a02:4680:22::214'},
'http://a.putinhuylo.com/':
{'status': 200, 'lookfor': 'Antizapret', 'ip': '195.123.209.38', 'subdomain': True,
'is_blacklisted': False},
}
https_list = {'https://rutracker.org/forum/index.php', 'https://lolibooru.moe/',
'https://e621.net/', 'https://www.dailymotion.com/'}
dpi_list = {
# These tests are currently performed only using IPv4. IPv6 field is not used.
'rutracker.org':
{'host': 'rutracker.org', 'urn': '/forum/index.php',
'lookfor': 'groupcp.php"', 'ip': '195.82.146.214', 'ipv6': '2a02:4680:22::214'},
'pbooru.com':
{'host': 'pbooru.com', 'urn': '/index.php?page=post&s=view&id=304688',
'lookfor': 'Related Posts', 'ip': '104.28.10.65', 'ipv6': '2400:cb00:2048:1::681c:a41'},
}
proxy_addr = 'proxy.antizapret.prostovpn.org:3128'
google_dns = '8.8.4.4'
google_dns_v6 = '2001:4860:4860::8844'
fake_dns = '3.3.3.3' #Fake server which should never reply
fake_dns_v6 = '2600::10:20'
google_dns_api = 'https://dns.google.com/resolve'
isup_server = 'isup.me'
isup_fmt = 'https://api.downfor.cloud/httpcheck/{}'
disable_isup = False #If true, presume that all sites are available
disable_report = False
disable_ipv6 = False
force_ipv6 = False
force_dpi_check = False
# End configuration
ipv6_available = False
debug = False
# Something really bad happened, what most likely is a bug: system DNS
# resolver and Google DNS are unavailable, while IPv6 generally work, and so on.
# Debug log is sent to server if this variable is True.
really_bad_fuckup = False
printed_text = ''
printed_text_with_debug = ''
try:
import tkinter as tk
import tkinter.scrolledtext as tkst
import threading
import queue
tkusable = True
if not (os.environ.get('DISPLAY') or os.environ.get('WAYLAND_DISPLAY')):
tkusable = False
class ThreadSafeConsole(tkst.ScrolledText):
def __init__(self, master, **options):
tkst.ScrolledText.__init__(self, master, **options)
self.queue = queue.Queue()
self.update_me()
def write(self, line):
self.queue.put(line)
def clear(self):
self.queue.put(None)
def update_me(self):
try:
while 1:
line = self.queue.get_nowait()
if line is None:
self.delete(1.0, tk.END)
else:
self.insert(tk.END, str(line))
self.see(tk.END)
self.update_idletasks()
except queue.Empty:
pass
self.after(100, self.update_me)
def tk_terminate():
root.destroy()
raise SystemExit
except ImportError:
tkusable = False
class ThreadSafeConsole():
pass
trans_table = str.maketrans("⚠✗✓«»", '!XV""')
def print_string(*args, **kwargs):
message = ''
newline = True
for arg in args:
message += str(arg) + " "
message = message.rstrip(" ")
for key, value in kwargs.items():
if key == 'end':
message += value
newline = False
if newline:
message += "\n"
return message
def print(*args, **kwargs):
global printed_text, printed_text_with_debug
if tkusable:
this_text = print_string(*args, **kwargs)
text.write(this_text)
printed_text += this_text
printed_text_with_debug += this_text
else:
if args and sys.stdout.encoding != 'UTF-8':
args = [x.translate(trans_table).replace("[☠]", "[FAIL]").replace("[☺]", "[:)]"). \
encode(sys.stdout.encoding, 'replace').decode(sys.stdout.encoding) for x in args
]
__builtins__.print(*args, **kwargs)
this_text = print_string(*args, **kwargs)
printed_text += this_text
printed_text_with_debug += this_text
def print_debug(*args, **kwargs):
global printed_text_with_debug
this_text = print_string(*args, **kwargs)
printed_text_with_debug += this_text
if debug:
print(*args, **kwargs)
def really_bad_fuckup_happened():
global really_bad_fuckup
really_bad_fuckup = True
def _get_a_record(site, querytype='A', dnsserver=None):
resolver = dns.resolver.Resolver()
resolver.timeout = 5
resolver.lifetime = 5
if dnsserver:
resolver.nameservers = [dnsserver]
result = []
while len(resolver.nameservers):
try:
resolved = resolver.query(site, querytype)
print_debug(str(resolved.response))
for item in resolved.rrset.items:
result.append(item.to_text())
return result
except dns.exception.Timeout:
print_debug("DNS Timeout for", site, "using", resolver.nameservers[0])
resolver.nameservers.remove(resolver.nameservers[0])
# If all the requests failed
return ""
def _get_a_record_over_google_api(site, querytype='A'):
result = []
response = _get_url(google_dns_api + "?name={}&type={}".format(site, querytype))
print_debug("Google API: {}".format(response))
if (response[0] != 200):
return ''
response_js = json.loads(response[1])
try:
for dnsanswer in response_js['Answer']:
if dnsanswer['type'] in (1, 28):
result.append(dnsanswer['data'])
except KeyError:
pass
return result
def _get_a_records(sitelist, querytype='A', dnsserver=None, googleapi=False):
result = []
for site in sorted(sitelist):
try:
if googleapi:
responses = _get_a_record_over_google_api(site, querytype)
print_debug("Google API вернул {}".format(responses))
else:
responses = _get_a_record(site, querytype, dnsserver)
for item in responses:
result.append(item)
except dns.resolver.NXDOMAIN:
print("[!] Невозможно получить DNS-запись для домена {} (NXDOMAIN). Результаты могут быть неточными.".format(site))
except dns.resolver.NoAnswer:
print_debug("DNS NoAnswer:", site)
except dns.exception.DNSException as e:
print_debug("DNSException:", str(e))
really_bad_fuckup_happened()
return sorted(result)
def _decode_bytes(input_bytes):
return input_bytes.decode(errors='replace')
def _get_url(url, proxy=None, ip=None, headers=False, follow_redirects=True):
class NoRedirectHandler(urllib.request.HTTPRedirectHandler):
def http_error_302(self, req, fp, code, msg, headers):
infourl = urllib.response.addinfourl(fp, headers, req.get_full_url())
infourl.status = code
infourl.code = code
return infourl
http_error_300 = http_error_302
http_error_301 = http_error_302
http_error_303 = http_error_302
http_error_307 = http_error_302
parsed_url = list(urllib.parse.urlsplit(url))
host = parsed_url[1]
if parsed_url[0].lower() == "https":
# Manually check certificate as we may need to connect by IP later
# and handling certificate check in urllib is painful and invasive
context_hostname_check = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
context_hostname_check.verify_mode = ssl.CERT_REQUIRED
conn = context_hostname_check.wrap_socket(socket.socket(socket.AF_INET6 if \
(':' in ip if ip else False) else socket.AF_INET),
server_hostname=host)
conn.settimeout(10)
print_debug("_get_url: connecting over " + ('IPv6' if \
(':' in ip if ip else False) else 'IPv4'))
try:
conn.connect((ip if ip else host, 443))
except (ssl.CertificateError) as e:
print_debug("_get_url: ssl.CertificateError", repr(e))
return (-1, '')
except (ssl.SSLError, socket.timeout, socket.error) as e:
print_debug("_get_url: socket exception", repr(e))
if 'CERTIFICATE_VERIFY_FAILED' in str(e):
return (-1, '')
return (0, '')
finally:
try:
conn.shutdown(socket.SHUT_RDWR)
except Exception:
pass
try:
conn.close()
except Exception:
pass
# SSL Context for urllib
context = ssl.create_default_context(ssl.Purpose.SERVER_AUTH)
# Disable SSL certificate check as we validated it earlier
# This is required to bypass SNI woes when we connect by IP
context.check_hostname = False
context.verify_mode = ssl.CERT_NONE
https_handler = urllib.request.HTTPSHandler(context=context)
if not follow_redirects:
# HACK: this works only for HTTP and conflicts with https_handler
opener = urllib.request.build_opener(NoRedirectHandler, https_handler)
else:
opener = urllib.request.build_opener(https_handler)
if ip:
parsed_url[1] = '[' + str(ip) + ']' if ':' in str(ip) else str(ip)
newurl = urllib.parse.urlunsplit(parsed_url)
req = urllib.request.Request(newurl)
req.add_header('Host', host)
else:
req = urllib.request.Request(url)
if proxy:
req.set_proxy(proxy, 'http')
req.add_header('User-Agent', SWUSERAGENT)
try:
opened = opener.open(req, timeout=15)
output = opened.read()
output = _decode_bytes(output)
if (headers):
output = str(opened.headers) + output
opened.close()
except (ssl.CertificateError) as e:
print_debug("_get_url: late ssl.CertificateError", repr(e))
return (-1, '')
except (urllib.error.URLError, ssl.SSLError, socket.error, socket.timeout) as e:
print_debug("_get_url: late socket exception", repr(e))
if 'CERTIFICATE_VERIFY_FAILED' in str(e):
return (-1, '')
if type(e) is urllib.error.HTTPError:
return(e.code, '')
return (0, '')
except (KeyboardInterrupt, SystemExit) as e:
# re-raise exception to send it to caller function
raise e
except Exception as e:
print("[☠] Неизвестная ошибка:", repr(e))
return (0, '')
return (opened.status, output)
def _cut_str(string, begin, end):
cut_begin = string.find(begin)
if cut_begin == -1:
return
cut_end = string[cut_begin:].find(end)
if cut_end == -1:
return
return string[cut_begin + len(begin):cut_begin + cut_end]
def _get_ip_and_isp():
# Dirty and cheap
try:
request = urllib.request.Request("https://2ip.ru/",
headers={"User-Agent": SWUSERAGENT}
)
data = _decode_bytes(urllib.request.urlopen(request, timeout=10).read())
ip = _cut_str(data, '<big id="d_clip_button">', '</big>')
isp = ' '.join(_cut_str(data, '"/isp/', '</a>').replace('">', '').split())
if ip and isp:
isp = urllib.parse.unquote(isp).replace('+', ' ')
return (ip, isp)
except Exception:
return
def _mask_ip(ipaddr):
ipaddr_s = ipaddress.ip_address(ipaddr)
if ipaddr_s.version == 4:
ipaddr_s = ipaddress.ip_interface(ipaddr + '/24')
return str(ipaddr_s.network).replace('0/24', 'xxx')
if ipaddr_s.version == 6:
ipaddr_s = ipaddress.ip_interface(ipaddr + '/64')
return str(ipaddr_s.network).replace(':/64', 'xxxx::')
return None
def _dpi_send(host, port, data, fragment_size=0, fragment_count=0):
sock = socket.create_connection((host, port), 10)
if fragment_count:
sock.setsockopt(socket.IPPROTO_TCP, socket.TCP_NODELAY, True)
try:
for fragment in range(fragment_count):
sock.sendall(data[:fragment_size].encode())
data = data[fragment_size:]
sock.sendall(data.encode())
recvdata = sock.recv(8192)
recv = recvdata
while recvdata:
recvdata = sock.recv(8192)
recv += recvdata
finally:
try:
sock.shutdown(socket.SHUT_RDWR)
except Exception:
pass
sock.close()
return _decode_bytes(recv)
def _dpi_build_tests(host, urn, ip, lookfor):
dpi_built_list = \
{'дополнительный пробел после GET':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'перенос строки перед GET':
{'data': "\r\nGET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'табуляция в конце домена':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}\t\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'фрагментирование заголовка':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 2, 'fragment_count': 6},
'точка в конце домена':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}.\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'заголовок hoSt вместо Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"hoSt: {}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'заголовок hOSt вместо Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"hOSt: {}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'значение Host БОЛЬШИМИ БУКВАМИ':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host: {}\r\nConnection: close\r\n\r\n".format(host.upper()),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'отсутствие пробела между двоеточием и значением заголовка Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Host:{}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'перенос строки в заголовках в UNIX-стиле':
{'data': "GET {} HTTP/1.0\n".format(urn) + \
"Host: {}\nConnection: close\n\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'необычный порядок заголовков':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Connection: close\r\nHost: {}\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'фрагментирование заголовка, hoSt и отсутствие пробела одновременно':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"hoSt:{}\r\nConnection: close\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 2, 'fragment_count': 6},
'7 КБ данных перед Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Connection: close\r\n" + \
"X-Padding1: {}\r\n".format('1'*1000) + \
"X-Padding2: {}\r\n".format('2'*1000) + \
"X-Padding3: {}\r\n".format('3'*1000) + \
"X-Padding4: {}\r\n".format('4'*1000) + \
"X-Padding5: {}\r\n".format('5'*1000) + \
"X-Padding6: {}\r\n".format('6'*1000) + \
"X-Padding7: {}\r\n".format('7'*1000) + \
"Host: {}\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'15 КБ данных перед Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Connection: close\r\n" + \
"X-Padding1: {}\r\n".format('1'*1000) + \
"X-Padding2: {}\r\n".format('2'*1000) + \
"X-Padding3: {}\r\n".format('3'*1000) + \
"X-Padding4: {}\r\n".format('4'*1000) + \
"X-Padding5: {}\r\n".format('5'*1000) + \
"X-Padding6: {}\r\n".format('6'*1000) + \
"X-Padding7: {}\r\n".format('7'*1000) + \
"X-Padding8: {}\r\n".format('8'*1000) + \
"X-Padding9: {}\r\n".format('9'*1000) + \
"X-Padding10: {}\r\n".format('0'*1000) + \
"X-Padding11: {}\r\n".format('1'*1000) + \
"X-Padding12: {}\r\n".format('2'*1000) + \
"X-Padding13: {}\r\n".format('3'*1000) + \
"X-Padding14: {}\r\n".format('4'*1000) + \
"X-Padding15: {}\r\n".format('5'*1000) + \
"Host: {}\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
'21 КБ данных перед Host':
{'data': "GET {} HTTP/1.0\r\n".format(urn) + \
"Connection: close\r\n" + \
"X-Padding1: {}\r\n".format('1'*3000) + \
"X-Padding2: {}\r\n".format('2'*3000) + \
"X-Padding3: {}\r\n".format('3'*3000) + \
"X-Padding4: {}\r\n".format('4'*3000) + \
"X-Padding5: {}\r\n".format('5'*3000) + \
"X-Padding6: {}\r\n".format('6'*3000) + \
"X-Padding7: {}\r\n".format('7'*3000) + \
"Host: {}\r\n\r\n".format(host),
'lookfor': lookfor, 'ip': ip,
'fragment_size': 0, 'fragment_count': 0},
}
return dpi_built_list
def check_isup(page_url):
"""
Check if the site is up using isup.me or whatever is set in
`isup_fmt`. Return True if it's up, False if it's not, None
if isup.me is itself unaccessible or there was an error while
getting the response.
`page_url` must be a string and presumed to be sanitized (but
doesn't have to be the domain and nothing else, isup.me accepts
full URLs)
isup.me can't check HTTPS URL yet, so we return True for them.
It's still useful to call check_isup even on HTTPS URLs for two
reasons: because we may switch to a service that can can check them
in the future and because check_isup will output a notification for
the user.
"""
#Note that isup.me doesn't use HTTPS and therefore the ISP can slip
#false information (and if it gets blocked, the error page by the ISP can
#happen to have the markers we look for). We should inform the user about
#this possibility when showing results.
if disable_isup:
return True
elif page_url.startswith("https://"):
#print("[☠] {} не поддерживает HTTPS, считаем, что сайт работает, "
# "а проблемы только у нас".format(isup_server))
return True
print("\tПроверяем доступность через {}".format(isup_server))
url = isup_fmt.format(page_url)
status, output = _get_url(url)
if output:
output = json.loads(output)
if status in (0, -1):
print("[⁇] Ошибка при соединении с {}".format(isup_server))
return None
elif status != 200:
print("[⁇] Неожиданный ответ от {}, код {}".format(isup_server, status))
return None
elif output.get('isDown') == False:
print("[☠] Сайт доступен, проблемы только у нас")
return True
elif output.get('isDown'):
print("[✗] Сайт недоступен, видимо, он не работает")
return False
else:
print("[⁇] Не удалось распознать ответ от {}".format(isup_server))
return None
DNS_IPV4 = 0
DNS_IPV6 = 1
def test_dns(dnstype=DNS_IPV4):
sites_list = list(dns_records_list)
query_type = ("A" if dnstype==DNS_IPV4 else "AAAA")
print("[O] Тестируем " + ("IPv4" if dnstype==DNS_IPV4 else "IPv6") + " DNS")
resolved_default_dns = _get_a_records(sites_list, query_type)
print("\tЧерез системный DNS:\t", str(resolved_default_dns))
resolved_google_dns = _get_a_records(sites_list, query_type, (google_dns if dnstype==DNS_IPV4 else google_dns_v6))
if resolved_google_dns:
print("\tЧерез Google DNS:\t", str(resolved_google_dns))
else:
print("\tНе удалось подключиться к Google DNS")
resolved_google_api = _get_a_records(sites_list, query_type, googleapi=True)
if resolved_google_api:
print("\tЧерез Google API:\t", str(resolved_google_api))
else:
print("\tНе удалось подключиться к Google API")
really_bad_fuckup_happened()
resolved_fake_dns = _get_a_records((sites_list[0],), query_type, (fake_dns if dnstype==DNS_IPV4 else fake_dns_v6))
if resolved_fake_dns:
print("\tЧерез недоступный DNS:\t", str(resolved_fake_dns))
else:
print("\tНесуществующий DNS не вернул адресов (это не ошибка)")
if not resolved_default_dns:
print("[?] Ошибка получения адреса через системный DNS")
really_bad_fuckup_happened()
return 5
elif not resolved_google_dns:
print("[☠] Сторонние DNS блокируются")
return 4
# Assume that Google API always works and returns correct addresses
dns_records = resolved_google_api
if not dns_records:
print("[?] Не удалось связаться с Google API. Проверка DNS сломана.")
really_bad_fuckup_happened()
return 5
if resolved_default_dns == resolved_google_dns:
if not resolved_fake_dns and len(resolved_default_dns) == len(dns_records):
print("[✓] DNS-записи не подменяются")
print("[✓] DNS не перенаправляется")
return 0
if resolved_default_dns == dns_records:
# Resolved DNS = Google DNS = Google API, and fake
# DNS resolved something.
print("[✓] DNS-записи не подменяются")
print("[☠] DNS перенаправляется")
return 1
else:
print("[☠] DNS-записи подменяются")
print("[☠] DNS перенаправляется")
return 2
else:
if resolved_google_dns == dns_records:
print("[☠] DNS-записи подменяются")
print("[✓] DNS не перенаправляется")
return 3
if resolved_fake_dns:
# Resolved DNS != Google DNS != Google API, and fake DNS resolved something.
print("[☠] DNS-записи подменяются")
print("[☠] DNS перенаправляется")
return 2
print("[?] Способ блокировки DNS определить не удалось. "
"Убедитесь, что вы используете DNS провайдера, а не сторонний.")
really_bad_fuckup_happened()
return 5
HTTP_ACCESS_NOBLOCKS = 0
HTTP_ACCESS_IPBLOCK = 1
HTTP_ACCESS_IPDPI = 2
HTTP_ACCESS_FULLDPI = 3
HTTP_ISUP_ALLUP = 0
HTTP_ISUP_SOMEDOWN = 1
HTTP_ISUP_ALLDOWN = 2
HTTP_ISUP_BROKEN = 3
def test_http_access(by_ip=False):
"""
Test plain HTTP access and return three values:
1. The result - one of the HTTP_ACCESS_* constants
2. isup.me info - one of the HTTP_ISUP_* constants
3. Subdomain block result
"""
sites = http_list
proxy = proxy_addr
print("[O] Тестируем HTTP" + (' (по настоящим IP-адресам сайтов)' if by_ip else ''))
successes_v4 = 0
successes_v6 = 0
successes_proxy = 0
down = 0
blocks = 0
blocks_ambiguous = 0
blocks_subdomains = 0
result_v4 = -1
result_v6 = -1
for site in sorted(sites):
print("\tОткрываем ", site)
# First try to resolve IP address using Google API.
# Use a static one if this did not work.
if by_ip:
domain = list(urllib.parse.urlsplit(site))[1]
newip = _get_a_record_over_google_api(domain)
if ipv6_available:
newipv6 = _get_a_record_over_google_api(domain, 'AAAA')
if newip:
sites[site]['ip'] = newip[0]
if ipv6_available and sites[site].get('ipv6') and newipv6:
sites[site]['ipv6'] = '[' + newipv6[0] + ']'
if ipv6_available:
result = _get_url(site, ip=sites[site].get('ip'), headers=True,
follow_redirects=sites[site].get('follow_redirects', True))
result_v6 = _get_url(site, ip=sites[site].get('ipv6'), headers=True,
follow_redirects=sites[site].get('follow_redirects', True))
else:
result = _get_url(site, ip=sites[site].get('ip') if by_ip else None,
headers=True,
follow_redirects=sites[site].get('follow_redirects', True))
result_ok = (result[0] == sites[site]['status'] and result[1].find(sites[site]['lookfor']) != -1)
if ipv6_available and sites[site].get('ipv6'):
result_v6_ok = (result_v6[0] == sites[site]['status'] and result_v6[1].find(sites[site]['lookfor']) != -1)
else:
result_v6_ok = True #Not really
if result_ok and result_v6_ok:
print("[✓] Сайт открывается")
if sites[site].get('is_blacklisted', True):
successes_v4 += 1
successes_v6 += 1
elif ipv6_available and (result_ok or result_v6_ok):
if not result_ok and result_v6_ok:
print("[!] Сайт открывается только по IPv6")
successes_v6 += 1
else:
print("[!] Сайт открывается только по IPv4")
successes_v4 += 1
if not (result_ok and result_v6_ok):
if (result[0] == sites[site]['status'] or (ipv6_available and result_v6[0] == sites[site]['status'])):
print("[☠] Получен неожиданный ответ, скорее всего, "
"страница-заглушка провайдера. Пробуем через прокси.")
else:
print("[☠] Сайт не открывается, пробуем через прокси")
result_proxy = _get_url(site, proxy)
if result_proxy[0] == sites[site]['status'] and result_proxy[1].find(sites[site]['lookfor']) != -1:
print("[✓] Сайт открывается через прокси")
if sites[site].get('is_blacklisted', True):
successes_proxy += 1
else:
if result_proxy[0] == sites[site]['status']:
print("[☠] Получен неожиданный ответ, скорее всего, "
"страница-заглушка провайдера. Считаем заблокированным.")
else:
print("[☠] Сайт не открывается через прокси")
isup = check_isup(site)
if isup is None:
if sites[site].get('is_blacklisted', True):
blocks_ambiguous += 1
elif isup:
if sites[site].get('subdomain'):
blocks_subdomains += 1
if sites[site].get('is_blacklisted', True):
blocks += 1
else:
if sites[site].get('is_blacklisted', True):
down += 1
all_sites = [http_list[i].get('is_blacklisted', True) for i in http_list].count(True)
#Result without isup.me
if successes_v4 == all_sites:
result_v4 = HTTP_ACCESS_NOBLOCKS
elif successes_v4 > 0 and successes_v4 + successes_proxy == all_sites:
result_v4 = HTTP_ACCESS_IPDPI
elif successes_v4 > 0:
result_v4 = HTTP_ACCESS_FULLDPI
else:
result_v4 = HTTP_ACCESS_IPBLOCK
if ipv6_available:
if successes_v6 == all_sites:
result_v6 = HTTP_ACCESS_NOBLOCKS
elif successes_v6 > 0 and successes_v6 + successes_proxy == all_sites:
result_v6 = HTTP_ACCESS_IPDPI
elif successes_v6 > 0:
result_v6 = HTTP_ACCESS_FULLDPI
else:
result_v6 = HTTP_ACCESS_IPBLOCK
#isup.me info
if blocks_ambiguous > 0:
isup = HTTP_ISUP_BROKEN
elif down == all_sites:
isup = HTTP_ISUP_ALLDOWN
elif down > 0:
isup = HTTP_ISUP_SOMEDOWN
else:
isup = HTTP_ISUP_ALLUP
return result_v4, result_v6, isup, (blocks_subdomains > 0)
def test_https_cert():
sites = https_list
isup_problems = False
print("[O] Тестируем HTTPS")
siteresults = []
for site in sorted(sites):
print("\tОткрываем ", site)
domain = list(urllib.parse.urlsplit(site))[1]
newip = _get_a_record_over_google_api(domain)
if newip:
newip = newip[0]
result = _get_url(site, ip=newip, follow_redirects=False)
else:
print_debug("Can't resolve IP for", site)
result = _get_url(site, follow_redirects=False)
if result[0] == -1:
print("[☠] Сертификат подменяется")
siteresults.append(False)
elif result[0] == 0:
print("[☠] Сайт не открывается")
if check_isup(site):
siteresults.append('no')
else:
isup_problems = True
else:
print("[✓] Сайт открывается")
siteresults.append(True)
if 'no' in siteresults:
# Blocked
return 2
elif False in siteresults:
# Wrong certificate
return 1
elif not isup_problems and all(siteresults):
# No blocks
return 0
else:
# Some sites are down or unknown result
return 3
def test_dpi():
print("[O] Тестируем обход DPI" + (' (только IPv4)' if ipv6_available else ''))
dpiresults = []
for dpisite in sorted(dpi_list):
site = dpi_list[dpisite]
# First try to resolve IP address using Google API.
# Use a static one if this did not work.
newip = _get_a_record_over_google_api(site['host'])
if newip:
site['ip'] = newip[0]
if ipv6_available:
newip = _get_a_record_over_google_api(site['host'], 'AAAA')
if newip:
site['ipv6'] = newip[0]
dpi_built_tests = _dpi_build_tests(site['host'], site['urn'], site['ip'], site['lookfor'])
for testname in sorted(dpi_built_tests):
test = dpi_built_tests[testname]
print("\tПробуем способ «{}» на {}".format(testname, dpisite))
try:
result = _dpi_send(test.get('ip'), 80, test.get('data'), test.get('fragment_size'), test.get('fragment_count'))
except (KeyboardInterrupt, SystemExit) as e:
# re-raise exception to send it to caller function
raise e
except Exception as e:
print("[☠] Ошибка:", repr(e))
else:
if result.split("\n")[0].find('200 ') != -1 and result.find(test['lookfor']) != -1:
print("[✓] Сайт открывается")
dpiresults.append(testname)
elif result.split("\n")[0].find('200 ') == -1 and result.find(test['lookfor']) != -1:
print("[!] Сайт не открывается, обнаружен пассивный DPI!")
dpiresults.append('Passive DPI')
else:
print("[☠] Сайт не открывается")
return list(set(dpiresults))
def check_ipv6_availability():
print("Проверка работоспособности IPv6", end='')
v6addr = _get_a_record("ipv6.icanhazip.com", "AAAA")
if (v6addr):
v6 = _get_url("http://ipv6.icanhazip.com/", ip=v6addr[0])
if len(v6[1]):
v6src = v6[1].strip()
if force_ipv6 or (not ipaddress.IPv6Address(v6src).teredo
and not ipaddress.IPv6Address(v6src).sixtofour):
print(": IPv6 доступен!")
return v6src
else:
print (": обнаружен туннель Teredo или 6to4, игнорируем.")
return False
print(": IPv6 недоступен.")
return False
def get_ispinfo(ipaddr):
try:
rdap_response = ipwhois.IPWhois(ipaddr)
ispinfo = rdap_response.lookup_rdap(depth=1)
return ispinfo['asn']
except (ipwhois.exceptions.ASNRegistryError,
ipwhois.exceptions.ASNLookupError,
ipwhois.exceptions.ASNParseError,
ipwhois.exceptions.HTTPLookupError,
ipwhois.exceptions.HTTPRateLimitError):
return False
def main():
ipv6_addr = None
global ipv6_available
print("BlockCheck v{}".format(VERSION))
print("Для получения корректных результатов используйте DNS-сервер",
"провайдера и отключите средства обхода блокировок.")
print()
latest_version = _get_url("https://raw.githubusercontent.com/ValdikSS/blockcheck/master/latest_version.txt")
if latest_version[0] == 200 and latest_version[1].strip() != VERSION:
print("Доступная новая версия программы: {}. Обновитесь, пожалуйста.".format(latest_version[1].strip()))
print()
if not disable_ipv6:
ipv6_available = check_ipv6_availability()
if (ipv6_available):
ipv6_addr = ipv6_available
ip_isp = _get_ip_and_isp()
if ip_isp:
if ipv6_available:
print("IP: {}, IPv6: {}, провайдер: {}".format(_mask_ip(ip_isp[0]), _mask_ip(ipv6_addr), ip_isp[1]))
if not force_ipv6:
asn4 = get_ispinfo(ip_isp[0])
asn6 = get_ispinfo(ipv6_addr)
if asn4 and asn6 and asn4 != asn6:
ipv6_available = False
print("Вероятно, у вас IPv6-туннель. Проверка IPv6 отключена.")
else:
print("IP: {}, провайдер: {}".format(_mask_ip(ip_isp[0]), ip_isp[1]))
print()
dnsv4 = test_dns(DNS_IPV4)
dnsv6 = 0
if ipv6_available:
print()
dnsv6 = test_dns(DNS_IPV6)
print()
http_v4, http_v6, http_isup, subdomain_blocked = test_http_access((dnsv4 != 0) or (dnsv6 != 0))
print()
https = test_https_cert()
print()
dpi = '-'
if http_v4 > 0 or http_v6 > 0 or force_dpi_check:
dpi = test_dpi()
print()
print("[!] Результат:")
if dnsv4 == 5:
print("[⚠] Не удалось определить способ блокировки IPv4 DNS.\n",
"Верните настройки DNS провайдера, если вы используете сторонний DNS-сервер.",
"Если вы используете DNS провайдера, возможно, ответы DNS модифицирует вышестоящий",
"провайдер.\n",
"Вам следует использовать шифрованный канал до DNS-серверов, например, через VPN, Tor, " + \
"HTTPS/Socks прокси или DNSCrypt.")
elif dnsv4 == 4:
print("[⚠] Ваш провайдер блокирует сторонние IPv4 DNS-серверы.\n",
"Вам следует использовать шифрованный канал до DNS-серверов, например, через VPN, Tor, " + \
"HTTPS/Socks прокси или DNSCrypt.")
elif dnsv4 == 3:
print("[⚠] Ваш провайдер подменяет DNS-записи, но не перенаправляет сторонние IPv4 DNS-серверы на свой.\n",
"Вам поможет смена DNS, например, на Яндекс.DNS 77.88.8.8 или Google DNS 8.8.8.8 и 8.8.4.4.")
elif dnsv4 == 2:
print("[⚠] Ваш провайдер подменяет DNS-записи и перенаправляет сторонние IPv4 DNS-серверы на свой.\n",
"Вам следует использовать шифрованный канал до DNS-серверов, например, через VPN, Tor, " + \
"HTTPS/Socks прокси или DNSCrypt.")
elif dnsv4 == 1:
print("[⚠] Ваш провайдер перенаправляет сторонние IPv4 DNS-серверы на свой, но не подменяет DNS-записи.\n",
"Это несколько странно и часто встречается в мобильных сетях.\n",
"Если вы хотите использовать сторонний DNS, вам следует использовать шифрованный канал до " + \
"DNS-серверов, например, через VPN, Tor, HTTPS/Socks прокси или DNSCrypt, но обходу " + \
"блокировок это не поможет.")
if ipv6_available:
if dnsv6 == 5:
print("[⚠] Не удалось определить способ блокировки IPv6 DNS.\n",
"Верните настройки DNS провайдера, если вы используете сторонний DNS-сервер.",