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#
# BitBake XMLRPC Server Interface
#
# Copyright (C) 2006 - 2007 Michael 'Mickey' Lauer
# Copyright (C) 2006 - 2008 Richard Purdie
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License version 2 as
# published by the Free Software Foundation.
#
# This program is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
import os
import sys
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
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