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1 # Copyright 2012 the V8 project authors. All rights reserved. | |
2 # Redistribution and use in source and binary forms, with or without | |
3 # modification, are permitted provided that the following conditions are | |
4 # met: | |
5 # | |
6 # * Redistributions of source code must retain the above copyright | |
7 # notice, this list of conditions and the following disclaimer. | |
8 # * Redistributions in binary form must reproduce the above | |
9 # copyright notice, this list of conditions and the following | |
10 # disclaimer in the documentation and/or other materials provided | |
11 # with the distribution. | |
12 # * Neither the name of Google Inc. nor the names of its | |
13 # contributors may be used to endorse or promote products derived | |
14 # from this software without specific prior written permission. | |
15 # | |
16 # THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS | |
17 # "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT | |
18 # LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR | |
19 # A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT | |
20 # OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, | |
21 # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT | |
22 # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, | |
23 # DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY | |
24 # THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT | |
25 # (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE | |
26 # OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. | |
27 | |
28 | |
29 import socket | |
30 import SocketServer | |
31 | |
32 from . import compression | |
33 from . import constants | |
34 | |
35 | |
36 def _StatusQuery(peer, query): | |
37 sock = socket.socket(socket.AF_INET, socket.SOCK_STREAM) | |
38 code = sock.connect_ex((peer.address, constants.STATUS_PORT)) | |
39 if code != 0: | |
40 # TODO(jkummerow): disconnect (after 3 failures?) | |
41 return | |
42 compression.Send(query, sock) | |
43 compression.Send(constants.END_OF_STREAM, sock) | |
44 rec = compression.Receiver(sock) | |
45 data = None | |
46 while not rec.IsDone(): | |
47 data = rec.Current() | |
48 assert data[0] == query[0] | |
49 data = data[1] | |
50 rec.Advance() | |
51 sock.close() | |
52 return data | |
53 | |
54 | |
55 def RequestTrustedPubkeys(peer, server): | |
56 pubkey_list = _StatusQuery(peer, [constants.LIST_TRUSTED_PUBKEYS]) | |
57 for pubkey in pubkey_list: | |
58 if server.IsTrusted(pubkey): continue | |
59 result = _StatusQuery(peer, [constants.GET_SIGNED_PUBKEY, pubkey]) | |
60 server.AcceptNewTrusted(result) | |
61 | |
62 | |
63 def NotifyNewTrusted(peer, data): | |
64 _StatusQuery(peer, [constants.NOTIFY_NEW_TRUSTED] + data) | |
65 | |
66 | |
67 def ITrustYouNow(peer): | |
68 _StatusQuery(peer, [constants.TRUST_YOU_NOW]) | |
69 | |
70 | |
71 def TryTransitiveTrust(peer, pubkey, server): | |
72 if _StatusQuery(peer, [constants.DO_YOU_TRUST, pubkey]): | |
73 result = _StatusQuery(peer, [constants.GET_SIGNED_PUBKEY, pubkey]) | |
74 server.AcceptNewTrusted(result) | |
75 | |
76 | |
77 class StatusHandler(SocketServer.BaseRequestHandler): | |
78 def handle(self): | |
79 rec = compression.Receiver(self.request) | |
80 while not rec.IsDone(): | |
81 data = rec.Current() | |
82 action = data[0] | |
83 | |
84 if action == constants.LIST_TRUSTED_PUBKEYS: | |
85 response = self.server.daemon.ListTrusted() | |
86 compression.Send([action, response], self.request) | |
87 | |
88 elif action == constants.GET_SIGNED_PUBKEY: | |
89 response = self.server.daemon.SignTrusted(data[1]) | |
90 compression.Send([action, response], self.request) | |
91 | |
92 elif action == constants.NOTIFY_NEW_TRUSTED: | |
93 self.server.daemon.AcceptNewTrusted(data[1:]) | |
94 pass # No response. | |
95 | |
96 elif action == constants.TRUST_YOU_NOW: | |
97 self.server.daemon.MarkPeerAsTrusting(self.client_address[0]) | |
98 pass # No response. | |
99 | |
100 elif action == constants.DO_YOU_TRUST: | |
101 response = self.server.daemon.IsTrusted(data[1]) | |
102 compression.Send([action, response], self.request) | |
103 | |
104 rec.Advance() | |
105 compression.Send(constants.END_OF_STREAM, self.request) | |
106 | |
107 | |
108 class StatusSocketServer(SocketServer.ThreadingMixIn, SocketServer.TCPServer): | |
109 def __init__(self, daemon): | |
110 address = (daemon.ip, constants.STATUS_PORT) | |
111 SocketServer.TCPServer.__init__(self, address, StatusHandler) | |
112 self.daemon = daemon | |
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