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- ##############################################################################
- #
- # Zope Public License (ZPL) Version 1.0
- # -------------------------------------
- #
- # Copyright (c) Digital Creations. All rights reserved.
- #
- # This license has been certified as Open Source(tm).
- #
- # Redistribution and use in source and binary forms, with or without
- # modification, are permitted provided that the following conditions are
- # met:
- #
- # 1. Redistributions in source code must retain the above copyright
- # notice, this list of conditions, and the following disclaimer.
- #
- # 2. Redistributions in binary form must reproduce the above copyright
- # notice, this list of conditions, and the following disclaimer in
- # the documentation and/or other materials provided with the
- # distribution.
- #
- # 3. Digital Creations requests that attribution be given to Zope
- # in any manner possible. Zope includes a "Powered by Zope"
- # button that is installed by default. While it is not a license
- # violation to remove this button, it is requested that the
- # attribution remain. A significant investment has been put
- # into Zope, and this effort will continue if the Zope community
- # continues to grow. This is one way to assure that growth.
- #
- # 4. All advertising materials and documentation mentioning
- # features derived from or use of this software must display
- # the following acknowledgement:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # In the event that the product being advertised includes an
- # intact Zope distribution (with copyright and license included)
- # then this clause is waived.
- #
- # 5. Names associated with Zope or Digital Creations must not be used to
- # endorse or promote products derived from this software without
- # prior written permission from Digital Creations.
- #
- # 6. Modified redistributions of any form whatsoever must retain
- # the following acknowledgment:
- #
- # "This product includes software developed by Digital Creations
- # for use in the Z Object Publishing Environment
- # (http://www.zope.org/)."
- #
- # Intact (re-)distributions of any official Zope release do not
- # require an external acknowledgement.
- #
- # 7. Modifications are encouraged but must be packaged separately as
- # patches to official Zope releases. Distributions that do not
- # clearly separate the patches from the original work must be clearly
- # labeled as unofficial distributions. Modifications which do not
- # carry the name Zope may be packaged in any form, as long as they
- # conform to all of the clauses above.
- #
- #
- # Disclaimer
- #
- # THIS SOFTWARE IS PROVIDED BY DIGITAL CREATIONS ``AS IS'' AND ANY
- # EXPRESSED OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- # IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
- # PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL DIGITAL CREATIONS OR ITS
- # CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- # SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
- # LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF
- # USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
- # ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY,
- # OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT
- # OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
- # SUCH DAMAGE.
- #
- #
- # This software consists of contributions made by Digital Creations and
- # many individuals on behalf of Digital Creations. Specific
- # attributions are listed in the accompanying credits file.
- #
- ##############################################################################
- '''This module implements a mix-in for traversable objects.
-
- $Id: Traversable.py,v 1.2.2.2 2000/08/15 17:06:55 evan Exp $'''
- __version__='$Revision: 1.2.2.2 $'[11:-2]
-
-
- import Acquisition
- from AccessControl import getSecurityManager
- from string import split, join
- from urllib import quote
-
- _marker=[]
- StringType=type('')
-
- class Traversable:
-
- absolute_url__roles__=None # Public
- def absolute_url(self, relative=0):
- try:
- req = self.REQUEST
- except AttributeError:
- req = {}
- rpp = req.get('VirtualRootPhysicalPath', ('',))
- spp = self.getPhysicalPath()
- i = 0
- for name in rpp[:len(spp)]:
- if spp[i] == name:
- i = i + 1
- else:
- break
- path = map(quote, spp[i:])
- if relative:
- # This is useful for physical path relative to a VirtualRoot
- return join(path, '/')
- return join([req['SERVER_URL']] + req._script + path, '/')
-
- getPhysicalRoot=Acquisition.Acquired
- getPhysicalRoot__roles__=() # Private
-
- getPhysicalPath__roles__=None # Public
- def getPhysicalPath(self):
- '''Returns a path (an immutable sequence of strings)
- that can be used to access this object again
- later, for example in a copy/paste operation. getPhysicalRoot()
- and getPhysicalPath() are designed to operate together.
- '''
- path = (self.id,)
-
- p = getattr(self,'aq_inner', None)
- if p is not None:
- path = p.aq_parent.getPhysicalPath() + path
-
- return path
-
- unrestrictedTraverse__roles__=() # Private
- def unrestrictedTraverse(self, path, default=_marker, restricted=0):
-
- if not path: return self
-
- get=getattr
- N=None
- M=_marker
-
- if type(path) is StringType: path = split(path,'/')
- else: path=list(path)
-
- REQUEST={'TraversalRequestNameStack': path}
- path.reverse()
- pop=path.pop
- if restricted: securityManager=getSecurityManager()
- else: securityManager=None
-
- if not path[-1]:
- # If the path starts with an empty string, go to the root first.
- pop()
- self=self.getPhysicalRoot()
- if (restricted and not securityManager.validateValue(self)):
- raise 'Unauthorized', name
-
- try:
- object = self
- while path:
- name=pop()
-
- if name[0] == '_':
- # Never allowed in a URL.
- raise 'NotFound', name
-
- if name=='..':
- o=getattr(object, 'aq_parent', M)
- if o is not M:
- if (restricted and not securityManager.validate(
- object, object,name, o)):
- raise 'Unauthorized', name
- object=o
- continue
-
- t=get(object, '__bobo_traverse__', N)
- if t is not N:
- o=t(REQUEST, name)
-
- # Note we pass no container, because we have no
- # way of knowing what it is
- if (restricted and not securityManager.validate(
- object, None, name, o)):
- raise 'Unauthorized', name
-
- else:
- o=get(object, name, M)
- if o is not M:
- if restricted:
- # waaaa
- if hasattr(get(object,'aq_base',object), name):
- # value wasn't acquired
- if not securityManager.validate(
- object, object, name, o):
- raise 'Unauthorized', name
- else:
- if not securityManager.validate(
- object, None, name, o):
- raise 'Unauthorized', name
-
- else:
- o=object[name]
- if (restricted and not securityManager.validate(
- object, object, None, o)):
- raise 'Unauthorized', name
-
- object=o
-
- return object
-
- except:
- if default==_marker: raise
- return default
-
- restrictedTraverse__roles__=None # Public
- def restrictedTraverse(self, path, default=_marker):
- return self.unrestrictedTraverse(path, default, restricted=1)
-