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"""User Folder Extension, tests now also ip number of the host where the original call comes from in case of redirects"""

import Globals
from AccessControl.User import UserFolder
from Globals import MessageDialog

class IntranetUserFolder(UserFolder):
	"""User folder for Intranet"""
	_domain_auth_mode=1 # Identification via domain
	meta_type="IntranetUserFolder"
	
	def authenticate(self, name, password, request):
		emergency = self._emergency_user
		if name is None:
		    return None
		if emergency and name==emergency.getUserName():
		    user = emergency
		else:
		    user = self.getUser(name)
		if user is not None and user.authenticate(password, request):
		    return user
		else:
		    return None

	def domainSpecMatch(self,spec, request):
	    host=''
	    addr=''

	    # Fast exit for the match-all case
	    if len(spec) == 1 and spec[0] == '*':
		return 1

	    if request.has_key('REMOTE_HOST'):
		host=request['REMOTE_HOST']

	    if request.has_key('REMOTE_ADDR'):
		addr=request['REMOTE_ADDR']

	    if request.has_key('HTTP_X_FORWARDED_FOR'):
		addr=request['HTTP_X_FORWARDED_FOR']

	    
	    if not host and not addr:
		return 0

	    if not host:
		try:    host=socket.gethostbyaddr(addr)[0]
		except: pass
	    if not addr:
		try:    addr=socket.gethostbyname(host)
		except: pass


	    _host=host.split('.')
	    _addr=addr.split('.')
	    _hlen=len(_host)
	    _alen=len(_addr)

	    for ob in spec:
		sz=len(ob)
		_ob=ob.split('.')
		_sz=len(_ob)

		mo = addr_match(ob)
		if mo is not None:
		    if mo.end(0)==sz:
			fail=0
			for i in range(_sz):
			    a=_addr[i]
			    o=_ob[i]
			    if (o != a) and (o != '*'):
				fail=1
				break
			if fail:
			    continue
			return 1

		mo = host_match(ob)
		if mo is not None:
		    if mo.end(0)==sz:
			if _hlen < _sz:
			    continue
			elif _hlen > _sz:
			    _item=_host[-_sz:]
			else:
			    _item=_host
			fail=0
			for i in range(_sz):
			    h=_item[i]
			    o=_ob[i]
			    if (o != h) and (o != '*'):
				fail=1
				break
			if fail:
			    continue
			return 1
	    return 0

Globals.default__class_init__(IntranetUserFolder)



def manage_addIntranetUserFolder(self,dtself=None,REQUEST=None,**ignored):
    """add a user folder """
    f=IntranetUserFolder()
    self=self.this()
    try:    self._setObject('acl_users', f)
    except: return MessageDialog(
                   title  ='Item Exists',
                   message='This object already contains a User Folder',
                   action ='%s/manage_main' % REQUEST['URL1'])
    self.__allow_groups__=f
    if REQUEST is not None:
        REQUEST['RESPONSE'].redirect(self.absolute_url()+'/manage_main')

def manage_addIntranetUserFolderForm(self):
	"""add a user folder form"""
	return manage_addIntranetUserFolder(self,REQUEST=self.REQUEST)