mirror of
https://github.com/Sneed-Group/Poodletooth-iLand
synced 2024-12-26 21:22:27 -06:00
296 lines
10 KiB
Python
296 lines
10 KiB
Python
|
import direct
|
||
|
|
from pandac.PandaModules import HttpRequest
|
||
|
|
from direct.directnotify.DirectNotifyGlobal import directNotify
|
||
|
|
from direct.task.TaskManagerGlobal import taskMgr
|
||
|
|
from direct.task import Task
|
||
|
|
from LandingPage import LandingPage
|
||
|
|
from direct.showbase import ElementTree as ET
|
||
|
|
|
||
|
|
notify = directNotify.newCategory('WebRequestDispatcher')
|
||
|
|
|
||
|
|
class WebRequest(object):
|
||
|
|
"""
|
||
|
|
Pointer to a single web request (maps to an open HTTP socket).
|
||
|
|
An instance of this class maps to a single client waiting for a response.
|
||
|
|
|
||
|
|
connection is an instance of libdirect.HttpRequest
|
||
|
|
"""
|
||
|
|
def __init__(self,connection):
|
||
|
|
self.connection = connection
|
||
|
|
|
||
|
|
def getURI(self):
|
||
|
|
return self.connection.GetRequestURL()
|
||
|
|
|
||
|
|
def getRequestType(self):
|
||
|
|
return self.connection.GetRequestType()
|
||
|
|
|
||
|
|
def dictFromGET(self):
|
||
|
|
result = {}
|
||
|
|
for pair in self.connection.GetRequestOptionString().split('&'):
|
||
|
|
arg = pair.split('=',1)
|
||
|
|
if len(arg) > 1:
|
||
|
|
result[arg[0]] = arg[1]
|
||
|
|
return result
|
||
|
|
|
||
|
|
def respondHTTP(self,status,body):
|
||
|
|
status = str(status)
|
||
|
|
msg = u"HTTP/1.0 %s\r\nContent-Type: text/html\r\n\r\n%s" % (status,body)
|
||
|
|
self.connection.SendThisResponse(encodedUtf8(msg))
|
||
|
|
|
||
|
|
def respond(self,body):
|
||
|
|
self.respondHTTP("200 OK",body)
|
||
|
|
|
||
|
|
def respondXML(self,body):
|
||
|
|
msg = u"HTTP/1.0 200 OK\r\nContent-Type: text/xml\r\n\r\n%s" % body
|
||
|
|
self.connection.SendThisResponse(encodedUtf8(msg))
|
||
|
|
|
||
|
|
def respondCustom(self,contentType,body):
|
||
|
|
msg = "HTTP/1.0 200 OK\r\nContent-Type: %s" % contentType
|
||
|
|
|
||
|
|
if contentType in ["text/css",]:
|
||
|
|
msg += "\nCache-Control: max-age=313977290\nExpires: Tue, 02 May 2017 04:08:44 GMT\n"
|
||
|
|
|
||
|
|
msg += "\r\n\r\n%s" % (body)
|
||
|
|
self.connection.SendThisResponse(msg)
|
||
|
|
|
||
|
|
def timeout(self):
|
||
|
|
resp = "<html><body>Error 504: Request timed out</body></html>\r\n"
|
||
|
|
self.respondHTTP("504 Gateway Timeout",resp)
|
||
|
|
|
||
|
|
def getSourceAddress(self):
|
||
|
|
return self.connection.GetSourceAddress()
|
||
|
|
|
||
|
|
|
||
|
|
# --------------------------------------------------------------------------------
|
||
|
|
|
||
|
|
class SkinningReplyTo:
|
||
|
|
def __init__(self, replyTo, dispatcher, uri, doSkin):
|
||
|
|
self._replyTo = replyTo
|
||
|
|
self._dispatcher = dispatcher
|
||
|
|
self._uri = uri
|
||
|
|
self._doSkin = doSkin
|
||
|
|
self._headTag = ET.Element('head')
|
||
|
|
self._bodyTag = ET.Element('body')
|
||
|
|
|
||
|
|
def respondHTTP(self,status,body):
|
||
|
|
if self._doSkin:
|
||
|
|
body = self._dispatcher.landingPage.skin(
|
||
|
|
body, self._uri, headTag=self._headTag, bodyTag=self._bodyTag)
|
||
|
|
self._replyTo.respondHTTP(status, body)
|
||
|
|
|
||
|
|
def respond(self, response):
|
||
|
|
self.respondHTTP("200 OK", response)
|
||
|
|
|
||
|
|
# provides access to head and body tags of landing page
|
||
|
|
def getHeadTag(self):
|
||
|
|
return self._headTag
|
||
|
|
def getBodyTag(self):
|
||
|
|
return self._bodyTag
|
||
|
|
|
||
|
|
def __getattr__(self, attrName):
|
||
|
|
if attrName in self.__dict__:
|
||
|
|
return self.__dict__[attrName]
|
||
|
|
if hasattr(self.__class__, attrName):
|
||
|
|
return getattr(self.__class__, attrName)
|
||
|
|
# pass-through to replyTo object which this object is a proxy to
|
||
|
|
return getattr(self._replyTo, attrName)
|
||
|
|
|
||
|
|
class WebRequestDispatcher(object):
|
||
|
|
"""
|
||
|
|
Request dispatcher for HTTP requests.
|
||
|
|
Contains registration and dispatching functionality.
|
||
|
|
|
||
|
|
Single-state class--multiple instances share all data.
|
||
|
|
This is because we're wrapping a singleton webserver.
|
||
|
|
|
||
|
|
How to use:
|
||
|
|
|
||
|
|
w = WebRequestDispatcher()
|
||
|
|
w.listenOnPort(8888)
|
||
|
|
def test(replyTo,**kw):
|
||
|
|
print 'test got called with these options: %s' % str(kw)
|
||
|
|
replyTo.respond('<html><body>Thank you for the yummy arguments: %s' % str(kw))
|
||
|
|
w.registerGETHandler('test',test)
|
||
|
|
while 1:
|
||
|
|
w.poll()
|
||
|
|
|
||
|
|
Browse to http://localhost:8888/test?foo=bar and see the result!
|
||
|
|
"""
|
||
|
|
|
||
|
|
_shared_state = {}
|
||
|
|
|
||
|
|
listenPort = None
|
||
|
|
|
||
|
|
uriToHandler = {}
|
||
|
|
|
||
|
|
requestTimeout = 10.0
|
||
|
|
|
||
|
|
notify = notify
|
||
|
|
|
||
|
|
def __new__(self, *a, **kw):
|
||
|
|
obj = object.__new__(self, *a, **kw)
|
||
|
|
obj.__dict__ = self._shared_state
|
||
|
|
return obj
|
||
|
|
|
||
|
|
def __init__(self, wantLandingPage = True):
|
||
|
|
self.enableLandingPage(wantLandingPage)
|
||
|
|
|
||
|
|
def listenOnPort(self,listenPort):
|
||
|
|
"""
|
||
|
|
Start the web server listening if it isn't already.
|
||
|
|
Singleton server, so ignore multiple listen requests.
|
||
|
|
"""
|
||
|
|
if self.listenPort is None:
|
||
|
|
self.listenPort = listenPort
|
||
|
|
HttpRequest.HttpManagerInitialize(listenPort)
|
||
|
|
self.notify.info("Listening on port %d" % listenPort)
|
||
|
|
else:
|
||
|
|
self.notify.warning("Already listening on port %d. Ignoring request to listen on port %d." % (self.listenPort,listenPort))
|
||
|
|
|
||
|
|
def invalidURI(self,replyTo,**kw):
|
||
|
|
resp = "<html><body>Error 404</body></html>\r\n"
|
||
|
|
replyTo.respondHTTP("404 Not Found",resp)
|
||
|
|
self.notify.warning("%s - %s - 404" % (replyTo.getSourceAddress(),replyTo.getURI()))
|
||
|
|
|
||
|
|
# access to head and body tags of landing page
|
||
|
|
# only for 'returnsResponse' mode
|
||
|
|
def getHeadTag(self):
|
||
|
|
return self._headTag
|
||
|
|
def getBodyTag(self):
|
||
|
|
return self._bodyTag
|
||
|
|
|
||
|
|
def handleGET(self,req):
|
||
|
|
"""
|
||
|
|
Parse and dispatch a single GET request.
|
||
|
|
Expects to receive a WebRequest object.
|
||
|
|
"""
|
||
|
|
assert req.getRequestType() == "GET"
|
||
|
|
|
||
|
|
self.landingPage.incrementQuickStat("Pages Served")
|
||
|
|
|
||
|
|
uri = req.getURI()
|
||
|
|
args = req.dictFromGET()
|
||
|
|
|
||
|
|
callable,returnsResponse,autoSkin = self.uriToHandler.get(uri, [self.invalidURI,False,False])
|
||
|
|
|
||
|
|
if callable != self.invalidURI:
|
||
|
|
self.notify.info("%s - %s - %s - 200" % (req.getSourceAddress(), uri, args))
|
||
|
|
|
||
|
|
if returnsResponse:
|
||
|
|
result = apply(callable,(),args)
|
||
|
|
if autoSkin:
|
||
|
|
self._headTag = ET.Element('head')
|
||
|
|
self._bodyTag = ET.Element('body')
|
||
|
|
req.respond(self.landingPage.skin(result,uri, headTag=self._headTag, bodyTag=self._bodyTag))
|
||
|
|
del self._bodyTag
|
||
|
|
del self._headTag
|
||
|
|
else:
|
||
|
|
req.respond(result)
|
||
|
|
else:
|
||
|
|
args["replyTo"] = SkinningReplyTo(req, self, uri, autoSkin)
|
||
|
|
apply(callable,(),args)
|
||
|
|
|
||
|
|
def poll(self):
|
||
|
|
"""
|
||
|
|
Pump the web server, handle any incoming requests.
|
||
|
|
This function should be called regularly, about 2-4
|
||
|
|
calls/sec for current applications is a good number.
|
||
|
|
"""
|
||
|
|
request = HttpRequest.HttpManagerGetARequest()
|
||
|
|
while request is not None:
|
||
|
|
wreq = WebRequest(request)
|
||
|
|
if wreq.getRequestType() == "GET":
|
||
|
|
self.handleGET(wreq)
|
||
|
|
else:
|
||
|
|
self.notify.warning("Ignoring a non-GET request from %s: %s" % (request.GetSourceAddress(),request.GetRawRequest()))
|
||
|
|
self.invalidURI(wreq)
|
||
|
|
|
||
|
|
request = HttpRequest.HttpManagerGetARequest()
|
||
|
|
|
||
|
|
|
||
|
|
def registerGETHandler(self,uri,handler,returnsResponse=False, autoSkin=False):
|
||
|
|
"""
|
||
|
|
Call this function to register a handler function to
|
||
|
|
be called in response to a query to the given URI.
|
||
|
|
|
||
|
|
GET options are translated into **kw arguments.
|
||
|
|
Handler function should accept **kw in order to handle
|
||
|
|
arbitrary queries.
|
||
|
|
|
||
|
|
If returnsResponse is False, the request is left open after
|
||
|
|
handler returns--handler or tasks it creates are responsible
|
||
|
|
for fulfilling the query now or in the future. Argument
|
||
|
|
replyTo (a WebRequest) is guaranteed to be passed to the
|
||
|
|
handler, and replyTo.respond must be called with an HTML
|
||
|
|
response string to fulfill the query and close the socket.
|
||
|
|
|
||
|
|
If returnsResponse is True, WebRequestDispatcher expects the
|
||
|
|
handler to return its response string, and we will route the
|
||
|
|
response and close the socket ourselves. No replyTo argument
|
||
|
|
is provided to the handler in this case.
|
||
|
|
"""
|
||
|
|
if uri[0] != "/":
|
||
|
|
uri = "/" + uri
|
||
|
|
|
||
|
|
if self.uriToHandler.get(uri,None) is None:
|
||
|
|
self.notify.info("Registered handler %s for URI %s." % (handler,uri))
|
||
|
|
self.uriToHandler[uri] = [handler, returnsResponse, autoSkin]
|
||
|
|
else:
|
||
|
|
self.notify.warning("Attempting to register a duplicate handler for URI %s. Ignoring." % uri)
|
||
|
|
|
||
|
|
def unregisterGETHandler(self,uri):
|
||
|
|
if uri[0] != "/":
|
||
|
|
uri = "/" + uri
|
||
|
|
self.uriToHandler.pop(uri,None)
|
||
|
|
|
||
|
|
|
||
|
|
# -- Poll task wrappers --
|
||
|
|
|
||
|
|
def pollHTTPTask(self,task):
|
||
|
|
self.poll()
|
||
|
|
return Task.again
|
||
|
|
|
||
|
|
def startCheckingIncomingHTTP(self, interval=0.3):
|
||
|
|
taskMgr.remove('pollHTTPTask')
|
||
|
|
taskMgr.doMethodLater(interval,self.pollHTTPTask,'pollHTTPTask')
|
||
|
|
|
||
|
|
def stopCheckingIncomingHTTP(self):
|
||
|
|
taskMgr.remove('pollHTTPTask')
|
||
|
|
|
||
|
|
|
||
|
|
# -- Landing page convenience functions --
|
||
|
|
|
||
|
|
def enableLandingPage(self, enable):
|
||
|
|
if enable:
|
||
|
|
if "landingPage" not in self.__dict__:
|
||
|
|
self.landingPage = LandingPage()
|
||
|
|
self.registerGETHandler("/", self._main, returnsResponse = True, autoSkin = True)
|
||
|
|
self.registerGETHandler("/services", self._services, returnsResponse = True, autoSkin = True)
|
||
|
|
self.registerGETHandler("/default.css", self._stylesheet)
|
||
|
|
self.registerGETHandler("/favicon.ico", self._favicon)
|
||
|
|
self.landingPage.addTab("Main", "/")
|
||
|
|
self.landingPage.addTab("Services", "/services")
|
||
|
|
else:
|
||
|
|
self.landingPage = None
|
||
|
|
self.unregisterGETHandler("/")
|
||
|
|
self.unregisterGETHandler("/services")
|
||
|
|
|
||
|
|
|
||
|
|
def _main(self):
|
||
|
|
return self.landingPage.getMainPage()
|
||
|
|
|
||
|
|
def _services(self):
|
||
|
|
return self.landingPage.getServicesPage(self.uriToHandler)
|
||
|
|
|
||
|
|
def _stylesheet(self,**kw):
|
||
|
|
replyTo = kw.get("replyTo",None)
|
||
|
|
assert replyTo is not None
|
||
|
|
body = self.landingPage.getStyleSheet()
|
||
|
|
replyTo.respondCustom("text/css",body)
|
||
|
|
|
||
|
|
def _favicon(self,**kw):
|
||
|
|
replyTo = kw.get("replyTo",None)
|
||
|
|
assert replyTo is not None
|
||
|
|
body = self.landingPage.getFavIcon()
|
||
|
|
replyTo.respondCustom("image/x-icon",body)
|