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
|
# Copyright 2012 the V8 project authors. All rights reserved.
# Redistribution and use in source and binary forms, with or without
# modification, are permitted provided that the following conditions are
# met:
#
# * Redistributions of source code must retain the above copyright
# notice, this list of conditions and the following disclaimer.
# * Redistributions in binary form must reproduce the above
# copyright notice, this list of conditions and the following
# disclaimer in the documentation and/or other materials provided
# with the distribution.
# * Neither the name of Google Inc. nor the names of its
# contributors may be used to endorse or promote products derived
# from this software without specific prior written permission.
#
# THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
# "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
# LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
# A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
# OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
# SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
# LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
# DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
# THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
# (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
# OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
import socket
import SocketServer
from . import compression
from . import constants
def _StatusQuery(peer, query):
sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM)
code = sock.connect_ex((peer.address, constants.STATUS_PORT))
if code != 0:
# TODO(jkummerow): disconnect (after 3 failures?)
return
compression.Send(query, sock)
compression.Send(constants.END_OF_STREAM, sock)
rec = compression.Receiver(sock)
data = None
while not rec.IsDone():
data = rec.Current()
assert data[0] == query[0]
data = data[1]
rec.Advance()
sock.close()
return data
def RequestTrustedPubkeys(peer, server):
pubkey_list = _StatusQuery(peer, [constants.LIST_TRUSTED_PUBKEYS])
for pubkey in pubkey_list:
if server.IsTrusted(pubkey): continue
result = _StatusQuery(peer, [constants.GET_SIGNED_PUBKEY, pubkey])
server.AcceptNewTrusted(result)
def NotifyNewTrusted(peer, data):
_StatusQuery(peer, [constants.NOTIFY_NEW_TRUSTED] + data)
def ITrustYouNow(peer):
_StatusQuery(peer, [constants.TRUST_YOU_NOW])
def TryTransitiveTrust(peer, pubkey, server):
if _StatusQuery(peer, [constants.DO_YOU_TRUST, pubkey]):
result = _StatusQuery(peer, [constants.GET_SIGNED_PUBKEY, pubkey])
server.AcceptNewTrusted(result)
class StatusHandler(SocketServer.BaseRequestHandler):
def handle(self):
rec = compression.Receiver(self.request)
while not rec.IsDone():
data = rec.Current()
action = data[0]
if action == constants.LIST_TRUSTED_PUBKEYS:
response = self.server.daemon.ListTrusted()
compression.Send([action, response], self.request)
elif action == constants.GET_SIGNED_PUBKEY:
response = self.server.daemon.SignTrusted(data[1])
compression.Send([action, response], self.request)
elif action == constants.NOTIFY_NEW_TRUSTED:
self.server.daemon.AcceptNewTrusted(data[1:])
pass # No response.
elif action == constants.TRUST_YOU_NOW:
self.server.daemon.MarkPeerAsTrusting(self.client_address[0])
pass # No response.
elif action == constants.DO_YOU_TRUST:
response = self.server.daemon.IsTrusted(data[1])
compression.Send([action, response], self.request)
rec.Advance()
compression.Send(constants.END_OF_STREAM, self.request)
class StatusSocketServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer):
def __init__(self, daemon):
address = (daemon.ip, constants.STATUS_PORT)
SocketServer.TCPServer.__init__(self, address, StatusHandler)
self.daemon = daemon
|
