-
Notifications
You must be signed in to change notification settings - Fork 0
/
ipoplib.py
executable file
·687 lines (590 loc) · 26.5 KB
/
ipoplib.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
#!/usr/bin/env python
import argparse
import binascii
import datetime
import getpass
import hashlib
import json
import logging
import observer
import os
import random
import select
import signal
import socket
import struct
import sys
import time
import urllib2
from threading import Timer
# Set default config values
CONFIG = {
"stun": ["stun.l.google.com:19302", "stun1.l.google.com:19302",
"stun2.l.google.com:19302", "stun3.l.google.com:19302",
"stun4.l.google.com:19302"],
"turn": [], # Contains dicts with "server", "user", "pass" keys
"ip4": "172.16.0.1",
"localhost": "127.0.0.1",
"ip6_prefix": "fd50:0dbc:41f2:4a3c",
"localhost6": "::1",
"ip4_mask": 24,
"ip6_mask": 64,
"subnet_mask": 32,
"svpn_port": 5800,
"contr_port": 5801,
"local_uid": "",
"uid_size": 40,
"sec": True,
"wait_time": 15,
"buf_size": 65507,
"router_mode": False,
"on-demand_connection" : False,
"on-demand_inactive_timeout" : 600,
"tincan_logging": 1,
"controller_logging" : "INFO",
"icc" : False, # Inter-Controller Connection
"icc_port" : 30000,
"switchmode" : 0,
"trim_enabled": False,
"multihop": False,
"multihop_cl": 100, #Multihop connection count limit
"multihop_ihc": 3, #Multihop initial hop count
"multihop_hl": 10, #Multihop maximum hop count limit
"multihop_tl": 1, # Multihop time limit (second)
"multihop_sr": True, # Multihop source route
"stat_report": False,
"stat_server" : "metrics.ipop-project.org",
"stat_server_port" : 5000,
"mtu" : 1280,
"internal_mtu" : 1280
}
IP_MAP = {}
ipop_ver = "\x03"
tincan_control = "\x01"
tincan_packet = "\x02"
icc_control = "\x03"
icc_packet = "\x04"
icc_mac_control = "\x00\x69\x70\x6f\x70" + icc_control
icc_mac_packet = "\x00\x69\x70\x6f\x70" + icc_packet
icc_ethernet_padding = "\x00\x00\x00\x00\x00\x00\x00\x00"
tincan_sr6 = "\x03"
tincan_sr6_end = "\x04"
null_uid = "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
null_uid += "\x00\x00\x00\x00\x00\x00\x00\x00\x00\x00"
bc_mac = "\xff\xff\xff\xff\xff\xff"
null_mac = "\x00\x00\x00\x00\x00\x00"
# PKTDUMP mode is for more detailed than debug logging, especially for dump
# packet contents in hexadecimal to log
#logging.addLevelName(5, "PKTDUMP")
#logging.PKTDUMP = 5
# server is cross-module(?) variable
server = None
# server is assigned in each Social/GroupVPN controller and then should be
# assigned in library module too.
def set_global_variable_server(s):
global server
server = s
# When proces killed or keyboard interrupted exit_handler runs then exit
def exit_handler(signum, frame):
logging.info("Terminating Controller")
if CONFIG["stat_report"]:
if server != None:
server.report()
else:
logging.debug("Controller socket is not created yet")
sys.exit(0)
signal.signal(signal.SIGINT, exit_handler)
# AFAIK, there is no way to catch SIGKILL
# signal.signal(signal.SIGKILL, exit_handler)
# signal.signal(signal.SIGQUIT, exit_handler)
signal.signal(signal.SIGTERM, exit_handler)
def pktdump(message, dump=None, *args, **argv):
hext = ""
if dump:
for i in range(0, len(dump),2):
hext += dump[i:i+2].encode("hex")
hext += " "
if i % 16 == 14:
hext += "\n"
logging.log(5, message + "\n" + hext)
else:
logging.log(5, message, *args, **argv)
logging.pktdump = pktdump
def ip6_a2b(str_ip6):
return "".join(x.decode("hex") for x in str_ip6.split(':'))
def ip6_b2a(bin_ip6):
return "".join(bin_ip6[x:x+2].encode("hex") + ":" for x in range(0, 14, 2))\
+ bin_ip6[14].encode("hex") + bin_ip6[15].encode("hex")
def ip4_a2b(str_ip4):
return "".join(chr(int(x)) for x in str_ip4.split('.'))
def ip4_b2a(bin_ip4):
return "".join(str(ord(bin_ip4[x])) + "." for x in range (0,3)) \
+ str(ord(bin_ip4[3]))
def mac_a2b(str_mac):
return "".join(x.decode("hex") for x in str_mac.split(':'))
def mac_b2a(bin_mac):
return "".join(bin_mac[x].encode("hex") + ":" for x in range(0,5)) +\
bin_mac[5].encode("hex")
def uid_a2b(str_uid):
return str_uid.decode("hex")
def uid_b2a(str_uid):
return str_uid.encode("hex")
def gen_ip4(uid, peer_map, ip4=None):
ip4 = ip4 or CONFIG["ip4"]
try:
return peer_map[uid]
except KeyError:
pass
ips = set(peer_map.itervalues())
prefix, _ = ip4.rsplit(".", 1)
# We allocate to *.101 - *.254. This ensures a 3-digit suffix and avoids
# the broadcast address. *.100 is our IPv4 address.
for i in range(101, 255):
peer_map[uid] = "%s.%s" % (prefix, i)
if peer_map[uid] not in ips:
return peer_map[uid]
del peer_map[uid]
raise OverflowError("Too many peers, out of IPv4 addresses")
def gen_ip6(uid, ip6=None):
if ip6 is None:
ip6 = CONFIG["ip6_prefix"]
for i in range(0, 16, 4): ip6 += ":" + uid[i:i+4]
return ip6
def gen_uid(ip4):
return hashlib.sha1(ip4).hexdigest()[:CONFIG["uid_size"]]
def make_call(sock, payload=None, **params):
if socket.has_ipv6: dest = (CONFIG["localhost6"], CONFIG["svpn_port"])
else: dest = (CONFIG["localhost"], CONFIG["svpn_port"])
if payload == None:
return sock.sendto(ipop_ver + tincan_control + json.dumps(params), dest)
else:
return sock.sendto(ipop_ver + tincan_packet + payload, dest)
def make_remote_call(sock, dest_addr, dest_port, m_type, payload, **params):
dest = (dest_addr, dest_port)
if m_type == tincan_control:
return sock.sendto(ipop_ver + m_type + json.dumps(params), dest)
else:
return sock.sendto(ipop_ver + m_type + payload, dest)
def send_packet(sock, msg):
if socket.has_ipv6: dest = (CONFIG["localhost6"], CONFIG["svpn_port"])
else: dest = (CONFIG["localhost"], CONFIG["svpn_port"])
return sock.sendto(ipop_ver + tincan_packet + msg, dest)
def icc_sendto_control(sock, src_uid, dest_uid, msg):
if socket.has_ipv6: dest = (CONFIG["localhost6"], CONFIG["svpn_port"])
else: dest = (CONFIG["localhost"], CONFIG["svpn_port"])
return sock.sendto(ipop_ver + icc_control + src_uid +
uid_a2b(dest_uid) + icc_mac_control + icc_ethernet_padding + msg, dest)
def icc_sendto_packet(sock, src_uid, dest_uid , msg):
if socket.has_ipv6: dest = (CONFIG["localhost6"], CONFIG["svpn_port"])
else: dest = (CONFIG["localhost"], CONFIG["svpn_port"])
return sock.sendto(ipop_ver + icc_packet + src_uid +
uid_a2b(dest_uid) + icc_mac_packet + icc_ethernet_padding + msg, dest)
def make_arp(src_uid=null_uid, dest_uid=null_uid, dest_mac=bc_mac,\
src_mac=bc_mac, op="\x01", sender_mac=bc_mac,\
sender_ip4=CONFIG["ip4"], target_mac=null_mac,\
target_ip4=CONFIG["ip4"]):
arp_msg = ""
arp_msg += src_uid
arp_msg += dest_uid
arp_msg += dest_mac
arp_msg += src_mac
arp_msg += "\x08\x06" #Ether type of ARP
arp_msg += "\x00\x01" #Hardware Type
arp_msg += "\x08\x00" #Protocol Type
arp_msg += "\x06" #Hardware address length
arp_msg += "\x04" #Protocol address length
arp_msg += "\x00" #Operation (ARP reply)
arp_msg += op #Operation (ARP reply)
arp_msg += sender_mac
arp_msg += sender_ip4
arp_msg += target_mac
arp_msg += target_ip4
return arp_msg
def do_send_msg(sock, method, overlay_id, uid, data):
return make_call(sock, m=method, overlay_id=overlay_id, uid=uid, data=data)
def do_set_cb_endpoint(sock, addr):
return make_call(sock, m="set_cb_endpoint", ip=addr[0], port=addr[1])
def do_register_service(sock, username, password, host):
return make_call(sock, m="register_svc", username=username,
password=password, host=host)
def do_create_link(sock, uid, fpr, overlay_id, sec, cas, stun=None, turn=None):
if stun is None:
stun = random.choice(CONFIG["stun"])
if turn is None:
if CONFIG["turn"]:
turn = random.choice(CONFIG["turn"])
else:
turn = {"server": "", "user": "", "pass": ""}
return make_call(sock, m="create_link", uid=uid, fpr=fpr,
overlay_id=overlay_id, stun=stun, turn=turn["server"],
turn_user=turn["user"],
turn_pass=turn["pass"], sec=sec, cas=cas)
def do_trim_link(sock, uid):
return make_call(sock, m="trim_link", uid=uid)
def do_set_local_ip(sock, uid, ip4, ip6, ip4_mask, ip6_mask, subnet_mask,
switchmode, mtu, internal_mtu):
return make_call(sock, m="set_local_ip", uid=uid, ip4=ip4, ip6=ip6,
ip4_mask=ip4_mask, ip6_mask=ip6_mask,
subnet_mask=subnet_mask, switchmode=switchmode, mtu=mtu,
internal_mtu=internal_mtu)
def do_set_remote_ip(sock, uid, ip4, ip6):
if (CONFIG["switchmode"] == 1):
return make_call(sock, m="set_remote_ip", uid=uid, ip4="127.0.0.1",\
ip6="::1/128")
else:
return make_call(sock, m="set_remote_ip", uid=uid, ip4=ip4, ip6=ip6)
def do_get_state(sock,peer_uid = "",stats = True):
return make_call(sock, m="get_state", uid = peer_uid ,stats=stats)
def do_set_logging(sock, logging):
return make_call(sock, m="set_logging", logging=logging)
def do_set_translation(sock, translate):
return make_call(sock, m="set_translation", translate=translate)
def do_set_switchmode(sock, switchmode):
return make_call(sock, m="set_switchmode", switchmode=switchmode)
def do_set_trimpolicy(sock, trim_enabled):
return make_call(sock, m="set_trimpolicy", trim_enabled=trim_enabled)
class UdpServer(object):
def __init__(self, user, password, host, ip4, logger):
#super(UdpServer, self).__init__("controller")
#self.observable = observer.Observable()
#self.observable.register(self)
self.ipop_state = {}
self.peers = {}
self.peers_ip4 = {}
self.peers_ip6 = {}
self.far_peers = {}
self.conn_stat = {}
if socket.has_ipv6:
self.sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
self.sock_svr = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
self.sock_svr.bind((CONFIG["localhost6"], CONFIG["contr_port"]))
else:
self.sock = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.sock_svr = socket.socket(socket.AF_INET, socket.SOCK_DGRAM)
self.sock_svr.bind((CONFIG["localhost"], CONFIG["contr_port"]))
self.sock.bind(("", 0))
self.sock_list = [ self.sock, self.sock_svr ]
global logging
logging = logger
print "ipoplib"
print logging
logging.info("what")
def inter_controller_conn(self):
self.cc_sock = socket.socket(socket.AF_INET6, socket.SOCK_DGRAM)
while True:
try:
time.sleep(3)
self.cc_sock.bind((gen_ip6(self.uid), CONFIG["icc_port"]))
except Exception as e:
logging.debug("Wait till ipop tap up")
continue
else:
break
self.sock_list.append(self.cc_sock)
def trigger_conn_request(self, peer):
if "fpr" not in peer and peer["xmpp_time"] < CONFIG["wait_time"] * 8:
self.conn_stat[peer["uid"]] = "req_sent"
do_send_msg(self.sock, "con_req", 1, peer["uid"],
self.ipop_state["_fpr"]);
def check_collision(self, msg_type, uid):
if msg_type == "con_req" and \
self.conn_stat.get(uid, None) == "req_sent":
if uid > self.ipop_state["_uid"]:
do_trim_link(self.sock, uid)
self.conn_stat.pop(uid, None)
return False
elif msg_type == "con_resp":
self.conn_stat[uid] = "resp_recv"
return False
else:
return True
def packet_handle(self, data):
ip4 = ip4_b2a(data[72:76])
if ip4 in self.arp_table:
if self.arp_table[ip4]["local"]:
logging.debug("OS arp cache not yet evicted {0}. discarding"
" packet".format(ip4))
return
make_remote_call(self.cc_sock,dest_addr=self.arp_table[ip4]["ip6"],\
dest_port=CONFIG["icc_port"], m_type=tincan_packet,
payload=data[42:])
logging.debug("send packet over controller {0} in {1}".format(ip4,\
self.arp_table))
return
# Not found, broadcast ARP request message
for k, v in self.peers.iteritems():
if v["status"] == "online":
logging.debug("Send arp_request({0}) msg to {1}".format(ip4,\
v["ip6"]))
make_remote_call(sock=self.cc_sock, dest_addr=v["ip6"],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="arp_request", target_ip4=ip4)
def icc_packet_handle(self, addr, data):
if data[0] != ipop_ver:
#TODO change it to raising exception
logging.error("ipop version mismatch: tincan:{0} contro ller:{1}"
"".format(data[0], ipop_ver))
sys.exit()
if data[1] == tincan_control:
msg = json.loads(data[2:])
logging.debug("msg:{0}".format(data[2:]))
msg_type = msg.get("msg_type", None)
if msg_type == "arp_request":
target_ip4 = msg["target_ip4"]
#Set source mac as broadcast
arp = make_arp(src_mac=mac_a2b(self.ipop_state["_mac"]), \
op="\x01", sender_ip4=ip4_a2b(self.ipop_state["_ip4"]),\
target_ip4=ip4_a2b(target_ip4))
send_packet(self.sock, arp)
elif msg_type == "arp_reply":
self.arp_table[msg["target_ip4"]] = msg
self.arp_table[msg["target_ip4"]]["local"] = False
arp = make_arp(src_mac=mac_a2b(msg["mac"]),\
op="\x02", sender_mac=mac_a2b(msg["mac"]),\
sender_ip4=ip4_a2b(msg["target_ip4"]),\
target_ip4=ip4_a2b(msg["target_ip4"]))
send_packet(self.sock, arp)
elif data[1] == tincan_packet:
logging.debug("icc_packet_handle packet")
if ip4_b2a(data[32:36]) in self.arp_table:
msg = ""
msg += null_uid
msg += null_uid
msg += mac_a2b(self.arp_table[ip4_b2a(data[32:36])]["mac"])
msg += data[8:14] #MAC
msg += data[14:]
send_packet(self.sock, msg)
def update_farpeers(self, key, hop_count, via):
if not key in self.far_peers:
self.far_peers[key] = {}
self.far_peers[key]["hop_count"] = sys.maxint
if self.far_peers[key]["hop_count"] >= hop_count:
self.far_peers[key]["hop_count"] = hop_count
self.far_peers[key]["via"] = via
logging.debug("farpeers:{0}".format(self.far_peers))
def flood(self, dest_ip6, ttl):
for k, v in self.peers.iteritems():
if "ip6" in v:
make_remote_call(sock=self.cc_sock, dest_addr=v["ip6"],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="lookup_request", target_ip6=dest_ip6,\
via=[self.ipop_state["_ip6"], v["ip6"]], ttl=ttl)
def lookup(self, dest_ip6):
logging.pktdump("Lookup: {0} pending lookup:{1}".format(dest_ip6, self.lookup_req))
if dest_ip6 in self.lookup_req:
return
# If no response from the lookup_request message at a certain time. Cancel the
# request
self.lookup_req[dest_ip6] = { "ttl" : CONFIG["multihop_ihc"]}
timer = Timer(CONFIG["multihop_tl"], self.lookup_timeout, args=[dest_ip6])
timer.start()
self.flood(dest_ip6, CONFIG["multihop_ihc"])
def lookup_timeout(self, dest_ip6):
# Lookup request message had been resolved
if not dest_ip6 in self.lookup_req:
return
# If the hop count exceeds the hop limit, give up lookup
if 2*self.lookup_req[dest_ip6]["ttl"] > CONFIG["multihop_hl"]:
del self.lookup_req[dest_ip6]
return
# Multiply ttl by two and retry lookup_request flooding
self.flood(dest_ip6, 2*self.lookup_req[dest_ip6]["ttl"])
def multihop_handle(self, data):
if data[0] != ipop_ver:
logging.error("ipop version mismatch: tincan:{0} controller:{1}"
"".format(data[0].encode("hex"), ipop_ver.encode("hex")))
if data[1] == tincan_control:
msg = json.loads(data[2:])
logging.debug("multihop control message recv {0}".format(msg))
msg_type = msg.get("msg_type", None)
if msg_type == "lookup_request":
#If this message visit here before, just drop it
for via in msg["via"][:-1]:
if self.ipop_state["_ip6"] == via:
return
# found in peer, do lookup_reply
for k, v in self.peers.iteritems():
if "ip6" in v and v["ip6"] == msg["target_ip6"]:
# IP is found in my peers,
# send reply message back to previous sender
make_remote_call(sock=self.cc_sock,\
dest_addr=msg["via"][-2],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="lookup_reply",\
target_ip6=msg["target_ip6"], via=msg["via"], via_idx=-2)
return
# not found in peer, add current node to via then flood
# lookup_request
for k, v in self.peers.iteritems():
#Do not send lookup_request back to previous hop
logging.pktdump("k:{0}, v:{1}".format(k, v))
if "ip6" in v and msg["via"][-2] == v["ip6"]:
continue
# Flood lookup_request
if "ip6" in v and msg["ttl"] > 1:
make_remote_call(sock=self.cc_sock, dest_addr=v["ip6"],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="lookup_request",\
ttl=msg["ttl"]-1, target_ip6=msg["target_ip6"],\
via=msg["via"] + [v["ip6"]])
if msg_type == "lookup_reply":
if CONFIG["multihop_sr"]:
if ~msg["via_idx"]+1==len(msg["via"]):
# In source route mode, only source node updates route
# information
self.update_farpeers(msg["target_ip6"],len(msg["via"]),
msg["via"])
if msg["target_ip6"] in self.lookup_req:
del self.lookup_req[msg["target_ip6"]]
return
else:
# Non source route mode, route information is kept at each
# hop. Each node only keeps the next hop info
self.update_farpeers(msg["target_ip6"], len(msg["via"]),\
msg["via"][msg["via_idx"]+1])
# Send lookup_reply message back to the source
make_remote_call(sock=self.cc_sock,\
dest_addr=msg["via"][msg["via_idx"]-1],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="lookup_reply",\
target_ip6=msg["target_ip6"],\
via=msg["via"], via_idx=msg["via_idx"]-1)
if msg_type == "route_error":
if msg["index"] == 0:
del self.far_peers[msg["via"][-1]]
else:
make_remote_call(sock=self.cc_sock,\
dest_addr=msg["via"][msg["index"]-1],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="route_error",\
index=msg["index"]-1, via=msg["via"])\
if data[1] == tincan_packet:
target_ip6=ip6_b2a(data[40:56])
logging.pktdump("Multihop Packet Destined to {0}".format(target_ip6))
if target_ip6 == self.ipop_state["_ip6"]:
make_call(self.sock, payload=null_uid + null_uid + data[2:])
return
# The packet destined to its direct peers
for k, v in self.peers.iteritems():
if "ip6" in v and v["ip6"] == target_ip6:
make_remote_call(sock=self.cc_sock, dest_addr=target_ip6,\
dest_port=CONFIG["icc_port"], m_type=tincan_packet,\
payload=data[2:])
return
# The packet is not in direct peers but have route information
if ip6_b2a(data[40:56]) in self.far_peers:
make_remote_call(sock=self.cc_sock,\
dest_addr=self.far_peers[target_ip6]["via"],\
dest_port=CONFIG["icc_port"], m_type=tincan_packet,\
payload=data[2:])
return
logging.error("Unroutable packet. Oops this should not happen")
if data[1] == tincan_sr6:
logging.pktdump("Multihop packet received", dump=data)
hop_index = ord(data[2]) + 1
hop_count = ord(data[3])
if hop_index == hop_count:
make_call(self.sock, payload=null_uid + null_uid +\
data[4+(hop_index)*16:])
return
packet = chr(hop_index)
packet += data[3:]
next_addr_offset = 4+(hop_index)*16
next_hop_addr = data[next_addr_offset:next_addr_offset+16]
for k, v in self.peers.iteritems():
if v["ip6"]==ip6_b2a(next_hop_addr) and v["status"]=="online":
make_remote_call(sock=self.cc_sock,\
dest_addr=ip6_b2a(next_hop_addr),\
dest_port=CONFIG["icc_port"], m_type=tincan_sr6,\
payload=packet)
return
via = []
for i in range(hop_count):
via.append(ip6_b2a(data[4+i*16:4+16*i+16]))
make_remote_call(sock=self.cc_sock, dest_addr=via[hop_index-2],\
dest_port=CONFIG["icc_port"], m_type=tincan_control,\
payload=None, msg_type="route_error", via=via, index=hop_index-2)
logging.debug("Link lost send back route_error message to source{0}"
"".format(via[hop_index-2]))
def report(self):
data = json.dumps({
"xmpp_host" : hashlib.sha1(CONFIG["xmpp_host"]).hexdigest(),\
"uid": hashlib.sha1(self.uid).hexdigest(), "xmpp_username":\
hashlib.sha1(CONFIG["xmpp_username"]).hexdigest(),\
"time": str(datetime.datetime.now()),\
"controller": self.vpn_type, "version": ord(ipop_ver)})
try:
url="http://" + CONFIG["stat_server"] + ":" +\
str(CONFIG["stat_server_port"]) + "/api/submit"
req = urllib2.Request(url=url, data=data)
req.add_header("Content-Type", "application/json")
res = urllib2.urlopen(req)
logging.debug("Succesfully reported status to the stat-server({0})."
".\nHTTP response code:{1}, msg:{2}".format(url, res.getcode(),\
res.read()))
if res.getcode() != 200:
raise
except:
logging.debug("Status report failed.")
def icc_sendto_control(self, dest_uid, msg):
logging.debug("sending control message to {0} --- {1}".format(dest_uid, msg))
icc_sendto_control(self.sock, uid_a2b(self.uid), dest_uid, msg)
def icc_sendto_packet(self, dest_uid, msg):
icc_sendto_packet(self.sock, uid_a2b(self.uid), dest_uid, msg)
def setup_config(config):
"""Validate config and set default value here. Return ``True`` if config is
changed.
"""
if not config["local_uid"]:
uid = binascii.b2a_hex(os.urandom(CONFIG["uid_size"] / 2))
config["local_uid"] = uid
return True # modified
return False
def load_peer_ip_config(ip_config):
with open(ip_config) as f:
ip_cfg = json.load(f)
for peer_ip in ip_cfg:
uid = peer_ip["uid"]
ip = peer_ip["ipv4"]
IP_MAP[uid] = ip
logging.debug("MAP %s -> %s" % (ip, uid))
def parse_config():
parser = argparse.ArgumentParser()
parser.add_argument("-c", help="load configuration from a file",
dest="config_file", metavar="config_file")
parser.add_argument("-u", help="update configuration file if needed",
dest="update_config", action="store_true")
parser.add_argument("-p", help="load remote ip configuration file",
dest="ip_config", metavar="ip_config")
parser.add_argument("-s", help="configuration as json string (overrides configuration from file)",
dest="config_string", metavar="config_string")
parser.add_argument("--pwdstdout", help="use stdout as password stream",
dest="pwdstdout", action="store_true")
args = parser.parse_args()
if args.config_file:
# Load the config file
with open(args.config_file) as f:
loaded_config = json.load(f)
CONFIG.update(loaded_config)
if args.config_string:
# Load the config string
loaded_config = json.loads(args.config_string)
CONFIG.update(loaded_config)
need_save = setup_config(CONFIG)
if need_save and args.config_file and args.update_config:
with open(args.config_file, "w") as f:
json.dump(CONFIG, f, indent=4, sort_keys=True)
if not ("xmpp_username" in CONFIG and "xmpp_host" in CONFIG):
raise ValueError("At least 'xmpp_username' and 'xmpp_host' must be "
"specified in config file or string")
if "xmpp_password" not in CONFIG:
prompt = "\nPassword for %s: " % CONFIG["xmpp_username"]
if args.pwdstdout:
CONFIG["xmpp_password"] = getpass.getpass(prompt, stream=sys.stdout)
else:
CONFIG["xmpp_password"] = getpass.getpass(prompt)
if "controller_logging" in CONFIG:
level = getattr(logging, CONFIG["controller_logging"])
logging.basicConfig(level=level)
if args.ip_config:
load_peer_ip_config(args.ip_config)