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
|
#
# BitBake XMLRPC Server Interface
#
# Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer
# Copyright (C) 2006 - 2008 Richard Purdie
#
# SPDX-License-Identifier: GPL-2.0-only
#
import hashlib
import time
import inspect
from xmlrpc.server import SimpleXMLRPCServer, SimpleXMLRPCRequestHandler
import bb
# This request handler checks if the request has a "Bitbake-token" header
# field (this comes from the client side) and compares it with its internal
# "Bitbake-token" field (this comes from the server). If the two are not
# equal, it is assumed that a client is trying to connect to the server
# while another client is connected to the server. In this case, a 503 error
# ("service unavailable") is returned to the client.
class BitBakeXMLRPCRequestHandler(SimpleXMLRPCRequestHandler):
def __init__(self, request, client_address, server):
self.server = server
SimpleXMLRPCRequestHandler.__init__(self, request, client_address, server)
def do_POST(self):
try:
remote_token = self.headers["Bitbake-token"]
except:
remote_token = None
if 0 and remote_token != self.server.connection_token and remote_token != "observer":
self.report_503()
else:
if remote_token == "observer":
self.server.readonly = True
else:
self.server.readonly = False
SimpleXMLRPCRequestHandler.do_POST(self)
def report_503(self):
self.send_response(503)
response = 'No more client allowed'
self.send_header("Content-type", "text/plain")
self.send_header("Content-length", str(len(response)))
self.end_headers()
self.wfile.write(bytes(response, 'utf-8'))
class BitBakeXMLRPCServer(SimpleXMLRPCServer):
# remove this when you're done with debugging
# allow_reuse_address = True
def __init__(self, interface, cooker, parent):
# Use auto port configuration
if (interface[1] == -1):
interface = (interface[0], 0)
SimpleXMLRPCServer.__init__(self, interface,
requestHandler=BitBakeXMLRPCRequestHandler,
logRequests=False, allow_none=True)
self.host, self.port = self.socket.getsockname()
self.interface = interface
self.connection_token = None
self.commands = BitBakeXMLRPCServerCommands(self)
self.register_functions(self.commands, "")
self.cooker = cooker
self.parent = parent
def register_functions(self, context, prefix):
"""
Convenience method for registering all functions in the scope
of this class that start with a common prefix
"""
methodlist = inspect.getmembers(context, inspect.ismethod)
for name, method in methodlist:
if name.startswith(prefix):
self.register_function(method, name[len(prefix):])
def get_timeout(self, delay):
socktimeout = self.socket.gettimeout() or delay
return min(socktimeout, delay)
def handle_requests(self):
self._handle_request_noblock()
class BitBakeXMLRPCServerCommands():
def __init__(self, server):
self.server = server
self.has_client = False
def registerEventHandler(self, host, port):
"""
Register a remote UI Event Handler
"""
s, t = bb.server.xmlrpcclient._create_server(host, port)
# we don't allow connections if the cooker is running
if (self.server.cooker.state in [bb.cooker.state.parsing, bb.cooker.state.running]):
return None, "Cooker is busy: %s" % bb.cooker.state.get_name(self.server.cooker.state)
self.event_handle = bb.event.register_UIHhandler(s, True)
return self.event_handle, 'OK'
def unregisterEventHandler(self, handlerNum):
"""
Unregister a remote UI Event Handler
"""
ret = bb.event.unregister_UIHhandler(handlerNum, True)
self.event_handle = None
return ret
def runCommand(self, command):
"""
Run a cooker command on the server
"""
return self.server.cooker.command.runCommand(command, self.server.readonly)
def getEventHandle(self):
return self.event_handle
def terminateServer(self):
"""
Trigger the server to quit
"""
self.server.parent.quit = True
print("XMLRPC Server triggering exit")
return
def addClient(self):
if self.server.parent.haveui:
return None
token = hashlib.md5(str(time.time()).encode("utf-8")).hexdigest()
self.server.connection_token = token
self.server.parent.haveui = True
return token
def removeClient(self):
if self.server.parent.haveui:
self.server.connection_token = None
self.server.parent.haveui = False
|
