get http username/password from settings

tabellio/icalimport/icalimport.py

@@ -2,16 +2,32 @@ import datetime
 import urllib2
 import vobject
 
+from zope import component
+
 from Products.CMFCore.WorkflowCore import WorkflowException
 from Products.CMFCore.utils import getToolByName
 from Products.Five.browser import BrowserView
+from plone.registry.interfaces import IRegistry
+
+from tabellio.config.interfaces import ITabellioSettings
 
 class IcalImport(BrowserView):
     def __call__(self):
+        self.settings = component.getUtility(IRegistry).forInterface(ITabellioSettings, False)
         self.plone_utils = getToolByName(self.context, 'plone_utils')
         self.portal_workflow = getToolByName(self.context, 'portal_workflow')
         url = self.request.form.get('url')
-        content = urllib2.urlopen(url).read()
+
+        if self.settings.ical_username:
+            password_mgr = urllib2.HTTPPasswordMgrWithDefaultRealm()
+            password_mgr.add_password(None, url,
+                            self.settings.ical_username, self.settings.ical_password)
+            handler = urllib2.HTTPBasicAuthHandler(password_mgr)
+            opener = urllib2.build_opener(handler)
+            urlopen = opener.open
+        else:
+            urlopen = urllib2.urlopen
+        content = urlopen(url).read()
         parsed_cal = vobject.readOne(content)
         for vevent in parsed_cal.vevent_list:
             title = vevent.summary.value