340 lines
12 KiB
Python
340 lines
12 KiB
Python
# -*- coding: utf-8 -*-
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###############################################################################
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import requests
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import xml.etree.ElementTree as etree
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import xbmcgui
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from utils import logging, settings, window
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import clientinfo
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###############################################################################
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# Disable annoying requests warnings
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import requests.packages.urllib3
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requests.packages.urllib3.disable_warnings()
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###############################################################################
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@logging
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class DownloadUtils():
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"""
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Manages any up/downloads with PKC. Careful to initiate correctly
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Use startSession() to initiate.
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If not initiated, e.g. SSL check will fallback to False
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"""
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# Borg - multiple instances, shared state
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_shared_state = {}
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# How many failed attempts before declaring PMS dead?
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connectionAttempts = 2
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# How many 401 returns before declaring unauthorized?
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unauthorizedAttempts = 2
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def __init__(self):
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self.__dict__ = self._shared_state
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# Requests session
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self.timeout = 30.0
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def setUsername(self, username):
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"""
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Reserved for userclient only
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"""
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self.username = username
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self.logMsg("Set username: %s" % username, 0)
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def setUserId(self, userId):
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"""
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Reserved for userclient only
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"""
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self.userId = userId
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self.logMsg("Set userId: %s" % userId, 0)
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def setServer(self, server):
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"""
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Reserved for userclient only
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"""
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self.server = server
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self.logMsg("Set server: %s" % server, 0)
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def setToken(self, token):
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"""
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Reserved for userclient only
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"""
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self.token = token
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if token == '':
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self.logMsg('Set token: empty token!', 0)
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else:
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self.logMsg("Set token: xxxxxxx", 0)
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def setSSL(self, verifySSL=None, certificate=None):
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"""
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Reserved for userclient only
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verifySSL must be 'true' to enable certificate validation
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certificate must be path to certificate or 'None'
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"""
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if verifySSL is None:
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verifySSL = settings('sslverify')
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if certificate is None:
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certificate = settings('sslcert')
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self.logMsg("Verify SSL certificates set to: %s" % verifySSL, 0)
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self.logMsg("SSL client side certificate set to: %s" % certificate, 0)
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if verifySSL != 'true':
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self.s.verify = False
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if certificate != 'None':
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self.s.cert = certificate
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def startSession(self, reset=False):
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"""
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User should be authenticated when this method is called (via
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userclient)
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"""
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# Start session
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self.s = requests.Session()
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client = clientinfo.ClientInfo()
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self.deviceId = client.getDeviceId()
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# Attach authenticated header to the session
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self.s.headers = client.getXArgsDeviceInfo()
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self.s.encoding = 'utf-8'
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# Set SSL settings
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self.setSSL()
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# Set other stuff
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self.setServer(window('pms_server'))
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self.setToken(window('pms_token'))
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self.setUserId(window('currUserId'))
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self.setUsername(window('plex_username'))
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# Counters to declare PMS dead or unauthorized
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# Use window variables because start of movies will be called with a
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# new plugin instance - it's impossible to share data otherwise
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if reset is True:
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window('countUnauthorized', value='0')
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window('countError', value='0')
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# Retry connections to the server
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self.s.mount("http://", requests.adapters.HTTPAdapter(max_retries=1))
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self.s.mount("https://", requests.adapters.HTTPAdapter(max_retries=1))
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self.logMsg("Requests session started on: %s" % self.server, 0)
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def stopSession(self):
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try:
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self.s.close()
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except:
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self.logMsg("Requests session already closed", 0)
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try:
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del self.s
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except:
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pass
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self.logMsg('Request session stopped', 0)
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def getHeader(self, options=None):
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header = clientinfo.ClientInfo().getXArgsDeviceInfo()
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if options is not None:
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header.update(options)
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return header
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def __doDownload(self, s, action_type, **kwargs):
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if action_type == "GET":
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r = s.get(**kwargs)
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elif action_type == "POST":
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r = s.post(**kwargs)
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elif action_type == "DELETE":
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r = s.delete(**kwargs)
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elif action_type == "OPTIONS":
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r = s.options(**kwargs)
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elif action_type == "PUT":
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r = s.put(**kwargs)
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return r
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def downloadUrl(self, url, action_type="GET", postBody=None,
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parameters=None, authenticate=True, headerOptions=None,
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verifySSL=True, timeout=None):
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"""
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Override SSL check with verifySSL=False
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If authenticate=True, existing request session will be used/started
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Otherwise, 'empty' request will be made
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Returns:
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None If an error occured
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True If connection worked but no body was received
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401, ... integer if PMS answered with HTTP error 401
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(unauthorized) or other http error codes
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xml xml etree root object, if applicable
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JSON json() object, if applicable
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"""
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kwargs = {'timeout': self.timeout}
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if authenticate is True:
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# Get requests session
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try:
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s = self.s
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except AttributeError:
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self.logMsg("Request session does not exist: start one", 0)
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self.startSession()
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s = self.s
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# Replace for the real values
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url = url.replace("{server}", self.server)
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else:
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# User is not (yet) authenticated. Used to communicate with
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# plex.tv and to check for PMS servers
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s = requests
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headerOptions = self.getHeader(options=headerOptions)
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if settings('sslcert') != 'None':
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kwargs['cert'] = settings('sslcert')
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# Set the variables we were passed (fallback to request session
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# otherwise - faster)
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kwargs['url'] = url
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if verifySSL is False:
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kwargs['verify'] = False
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if headerOptions is not None:
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kwargs['headers'] = headerOptions
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if postBody is not None:
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kwargs['data'] = postBody
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if parameters is not None:
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kwargs['params'] = parameters
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if timeout is not None:
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kwargs['timeout'] = timeout
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# ACTUAL DOWNLOAD HAPPENING HERE
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try:
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r = self.__doDownload(s, action_type, **kwargs)
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# THE EXCEPTIONS
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except requests.exceptions.ConnectionError as e:
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# Connection error
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self.logMsg("Server unreachable at: %s" % url, -1)
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self.logMsg(e, 1)
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except requests.exceptions.ConnectTimeout as e:
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self.logMsg("Server timeout at: %s" % url, -1)
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self.logMsg(e, 1)
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except requests.exceptions.HTTPError as e:
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self.logMsg('HTTP Error at %s' % url, -1)
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self.logMsg(e, 1)
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except requests.exceptions.SSLError as e:
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self.logMsg("Invalid SSL certificate for: %s" % url, -1)
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self.logMsg(e, 1)
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except requests.exceptions.TooManyRedirects as e:
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self.logMsg("Too many redirects connecting to: %s" % url, -1)
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self.logMsg(e, 1)
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except requests.exceptions.RequestException as e:
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self.logMsg("Unknown error connecting to: %s" % url, -1)
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self.logMsg(e, 1)
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except SystemExit:
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self.logMsg('SystemExit detected, aborting download', 0)
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self.stopSession()
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except:
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self.logMsg('Unknown error while downloading. Traceback:', -1)
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import traceback
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self.logMsg(traceback.format_exc(), 0)
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# THE RESPONSE #####
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else:
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# We COULD contact the PMS, hence it ain't dead
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if authenticate is True:
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window('countError', value='0')
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if r.status_code != 401:
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window('countUnauthorized', value='0')
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if r.status_code == 204:
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# No body in the response
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# But read (empty) content to release connection back to pool
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# (see requests: keep-alive documentation)
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r.content
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return True
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elif r.status_code == 401:
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if authenticate is False:
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# Called when checking a connect - no need for rash action
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return 401
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r.encoding = 'utf-8'
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self.logMsg('HTTP error 401 from PMS %s' % url, -1)
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self.logMsg(r.text, 1)
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if '401 Unauthorized' in r.text:
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# Truly unauthorized
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window('countUnauthorized',
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value=str(int(window('countUnauthorized')) + 1))
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if (int(window('countUnauthorized')) >=
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self.unauthorizedAttempts):
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self.logMsg('We seem to be truly unauthorized for PMS'
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' %s ' % url, -1)
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if window('plex_serverStatus') not in ('401', 'Auth'):
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# Tell userclient token has been revoked.
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self.logMsg('Setting PMS server status to '
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'unauthorized', 0)
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window('plex_serverStatus', value="401")
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xbmcgui.Dialog().notification(
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self.addonName,
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"Unauthorized for PMS",
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xbmcgui.NOTIFICATION_ERROR)
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else:
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# there might be other 401 where e.g. PMS under strain
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self.logMsg('PMS might only be under strain', 0)
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return 401
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elif r.status_code in (200, 201):
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# 200: OK
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# 201: Created
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try:
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# xml response
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r = etree.fromstring(r.content)
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return r
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except:
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r.encoding = 'utf-8'
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if r.text == '':
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# Answer does not contain a body
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return True
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try:
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# UNICODE - JSON object
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r = r.json()
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return r
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except:
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if '200 OK' in r.text:
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# Received fucked up OK from PMS on playstate
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# update
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pass
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else:
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self.logMsg("Unable to convert the response for: "
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"%s" % url, -1)
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self.logMsg("Received headers were: %s"
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% r.headers, -1)
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self.logMsg('Received text:', -1)
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self.logMsg(r.text, -1)
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return True
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else:
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self.logMsg('Unknown answer from PMS %s with status code %s. '
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'Message:' % (url, r.status_code), -1)
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r.encoding = 'utf-8'
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self.logMsg(r.text, 1)
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return True
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# And now deal with the consequences of the exceptions
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if authenticate is True:
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# Make the addon aware of status
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try:
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window('countError',
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value=str(int(window('countError')) + 1))
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if int(window('countError')) >= self.connectionAttempts:
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self.logMsg('Failed to connect to %s too many times. '
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'Declare PMS dead' % url, -1)
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window('plex_online', value="false")
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except:
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# 'countError' not yet set
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pass
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return None
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