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Commit 9c8f4d5e authored by Lennart Regebro's avatar Lennart Regebro
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Merge of the traversal refactoring branch.

parent c4cceb84
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doc/CHANGES.txt
View file @ 9c8f4d5e
......@@ -49,6 +49,17 @@ Zope Changes
Features added
- The traversal has been refactored to take heed of Zope3s
IPublishTraverse adapter interfaces. The ZCML directives
five:traversable and five:defaultViewable are therefore no
longer needed, as everything now is five:traversable and
five:defaultViewable.
There was a bug in earlier versions of Five that allowed you
to do custom publishing traversal with ITraversable adapters.
This bug has been corrected. Anybody using ITraversable
adapters need to convert them to IPublishTraversal adapters.
- Testing.makerequest: Added an 'environ' argument so
clients can use mappings other than os.environ.
......
lib/python/OFS/Traversable.py
View file @ 9c8f4d5e
......@@ -25,9 +25,14 @@ from AccessControl.ZopeGuards import guarded_getattr
from Acquisition import Acquired, aq_inner, aq_parent, aq_base
from zExceptions import NotFound
from ZODB.POSException import ConflictError
from zope.interface import implements
from zope.interface import implements, Interface
from interfaces import ITraversable
from zope.app.traversing.interfaces import ITraversable as IZope3Traversable
from zope.component import queryMultiAdapter
from zope.app.traversing.interfaces import TraversalError
from zope.app.traversing.namespace import nsParse
from zope.app.traversing.namespace import namespaceLookup
_marker = object()
......@@ -59,6 +64,7 @@ class Traversable:
return self.virtual_url_path()
spp = self.getPhysicalPath()
try:
toUrl = self.REQUEST.physicalPathToURL
except AttributeError:
......@@ -133,7 +139,6 @@ class Traversable:
If true, then all of the objects along the path are validated with
the security machinery. Usually invoked using restrictedTraverse().
"""
if not path:
return self
......@@ -188,7 +193,19 @@ class Traversable:
continue
bobo_traverse = _getattr(obj, '__bobo_traverse__', _none)
if bobo_traverse is not _none:
if name and name[:1] in '@+':
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
next = namespaceLookup(ns, nm, obj,
self.REQUEST).__of__(obj)
if restricted and not securityManager.validate(
obj, obj, name, next):
raise Unauthorized, name
except TraversalError:
raise AttributeError(name)
elif bobo_traverse is not _none:
next = bobo_traverse(REQUEST, name)
if restricted:
if aq_base(next) is not next:
......@@ -228,11 +245,20 @@ class Traversable:
next = _getattr(obj, name, marker)
if next is marker:
try:
next=obj[name]
except AttributeError:
# Raise NotFound for easier debugging
# instead of AttributeError: __getitem__
raise NotFound, name
try:
next=obj[name]
except AttributeError:
# Raise NotFound for easier debugging
# instead of AttributeError: __getitem__
raise NotFound, name
except (NotFound, KeyError):
# Try to look for a view
next = queryMultiAdapter((obj, self.REQUEST),
Interface, name)
if next is None:
# Didn't find one, reraise the error:
raise
next = next.__of__(obj)
if restricted and not securityManager.validate(
obj, obj, _none, next):
raise Unauthorized, name
......
lib/python/Products/PageTemplates/Expressions.py
View file @ 9c8f4d5e
......@@ -248,12 +248,28 @@ class NotExpr:
def __repr__(self):
return 'not:%s' % `self._s`
from zope.interface import Interface, implements
from zope.component import queryMultiAdapter
from zope.app.traversing.namespace import nsParse
from zope.app.traversing.namespace import namespaceLookup
from zope.app.traversing.interfaces import TraversalError
from zope.publisher.interfaces.browser import IBrowserRequest
from zope.app.publication.browser import setDefaultSkin
class FakeRequest(dict):
implements(IBrowserRequest)
def getURL(self):
return "http://codespeak.net/z3/five"
def restrictedTraverse(object, path, securityManager,
get=getattr, has=hasattr, N=None, M=[],
TupleType=type(()) ):
REQUEST = {'path': path}
REQUEST = FakeRequest()
REQUEST['path'] = path
REQUEST['TraversalRequestNameStack'] = path = path[:] # Copy!
setDefaultSkin(REQUEST)
path.reverse()
validate = securityManager.validate
__traceback_info__ = REQUEST
......@@ -282,7 +298,20 @@ def restrictedTraverse(object, path, securityManager,
continue
t=get(object, '__bobo_traverse__', N)
if t is not N:
if name and name[:1] in '@+':
import pdb
pdb.set_trace()
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
o = namespaceLookup(ns, nm, object,
REQUEST).__of__(object)
if not validate(object, object, name, o):
raise Unauthorized, name
except TraversalError:
raise AttributeError(name)
elif t is not N:
o=t(REQUEST, name)
container = None
......@@ -305,7 +334,16 @@ def restrictedTraverse(object, path, securityManager,
# XXX maybe in Python 2.2 we can just check whether
# the object has the attribute "__getitem__"
# instead of blindly catching exceptions.
o = object[name]
try:
o = object[name]
except (AttributeError, KeyError):
# Try to look for a view
o = queryMultiAdapter((object, REQUEST),
Interface, name)
if o is None:
# Didn't find one, reraise the error:
raise
o = o.__of__(object)
except AttributeError, exc:
if str(exc).find('__getitem__') >= 0:
# The object does not support the item interface.
......
lib/python/ZPublisher/BaseRequest.py
View file @ 9c8f4d5e
......@@ -16,10 +16,22 @@ $Id$
"""
from urllib import quote
import xmlrpc
from zExceptions import Forbidden
from zExceptions import Forbidden, Unauthorized, NotFound
from zope.interface import implements, providedBy, Interface
from zope.component import queryMultiAdapter
from zope.component import getSiteManager
from zope.component.interfaces import ComponentLookupError
from zope.event import notify
from zope.app.publication.interfaces import EndRequestEvent
from zope.app.publisher.browser import queryDefaultViewName
from zope.publisher.interfaces import IPublishTraverse
from zope.component.interfaces import IDefaultViewName
from zope.publisher.interfaces.browser import IBrowserPublisher
from zope.publisher.interfaces.browser import IBrowserRequest
from zope.app.traversing.interfaces import TraversalError
from zope.app.traversing.namespace import nsParse
from zope.app.traversing.namespace import namespaceLookup
UNSPECIFIED_ROLES=''
......@@ -45,6 +57,86 @@ except ImportError:
def getRoles(container, name, value, default):
return getattr(value, '__roles__', default)
class DefaultPublishTraverse(object):
implements(IBrowserPublisher)
def __init__(self, context, request):
self.context = context
self.request = request
def publishTraverse(self, request, name):
object = self.context
URL=request['URL']
if name[:1]=='_':
raise Forbidden("Object name begins with an underscore at: %s" % URL)
try:
if hasattr(object,'__bobo_traverse__'):
subobject=object.__bobo_traverse__(request, name)
if type(subobject) is type(()) and len(subobject) > 1:
# Add additional parents into the path
# XXX This needs handling. Check the publish refactor branch...
parents[-1:] = list(subobject[:-1])
object, subobject = subobject[-2:]
else:
try:
subobject=getattr(object, name)
except AttributeError:
subobject=object[name]
except (AttributeError, KeyError, NotFound):
# Find a view even if it doesn't start with @@, but only
# If nothing else could be found
subobject = queryMultiAdapter((object, request), Interface, name)
if subobject is not None:
# OFS.Application.__bobo_traverse__ calls
# REQUEST.RESPONSE.notFoundError which sets the HTTP
# status code to 404
request.RESPONSE.setStatus(200)
# We don't need to do the docstring security check
# for views, so lets skip it and return the object here.
return subobject.__of__(object)
raise
# Ensure that the object has a docstring, or that the parent
# object has a pseudo-docstring for the object. Objects that
# have an empty or missing docstring are not published.
doc = getattr(subobject, '__doc__', None)
if doc is None:
doc = getattr(object, '%s__doc__' % name, None)
if not doc:
raise Forbidden(
"The object at %s has an empty or missing " \
"docstring. Objects must have a docstring to be " \
"published." % URL
)
# Hack for security: in Python 2.2.2, most built-in types
# gained docstrings that they didn't have before. That caused
# certain mutable types (dicts, lists) to become publishable
# when they shouldn't be. The following check makes sure that
# the right thing happens in both 2.2.2+ and earlier versions.
if not typeCheck(subobject):
raise Forbidden(
"The object at %s is not publishable." % URL
)
return subobject
def browserDefault(self, request):
if hasattr(self.context, '__browser_default__'):
return self.context.__browser_default__(request)
# Zope 3.2 still uses IDefaultView name when it
# registeres default views, even though it's
# deprecated. So we handle that here:
default_name = queryDefaultViewName(self.context, request)
if default_name is not None:
return self.context, (default_name,)
return self.context, ()
_marker=[]
class BaseRequest:
......@@ -184,6 +276,35 @@ class BaseRequest:
__repr__=__str__
def traverseName(self, ob, name):
if name and name[:1] in '@+':
# Process URI segment parameters.
ns, nm = nsParse(name)
if ns:
try:
ob2 = namespaceLookup(ns, nm, ob, self)
except TraversalError:
raise KeyError(ob, name)
return ob2.__of__(ob)
if name == '.':
return ob
if IPublishTraverse.providedBy(ob):
ob2 = ob.publishTraverse(self, name)
else:
adapter = queryMultiAdapter((ob, self), IPublishTraverse)
if adapter is None:
## Zope2 doesn't set up its own adapters in a lot of cases
## so we will just use a default adapter.
adapter = DefaultPublishTraverse(ob, self)
ob2 = adapter.publishTraverse(self, name)
return ob2
def traverse(self, path, response=None, validated_hook=None):
"""Traverse the object space
......@@ -193,7 +314,6 @@ class BaseRequest:
request=self
request_get=request.get
if response is None: response=self.response
debug_mode=response.debug_mode
# remember path for later use
browser_path = path
......@@ -235,14 +355,14 @@ class BaseRequest:
object=parents[-1]
del parents[:]
roles = getRoles(None, None, object, UNSPECIFIED_ROLES)
self.roles = getRoles(None, None, object, UNSPECIFIED_ROLES)
# if the top object has a __bobo_traverse__ method, then use it
# to possibly traverse to an alternate top-level object.
if hasattr(object,'__bobo_traverse__'):
try:
object=object.__bobo_traverse__(request)
roles = getRoles(None, None, object, UNSPECIFIED_ROLES)
self.roles = getRoles(None, None, object, UNSPECIFIED_ROLES)
except: pass
if not path and not method:
......@@ -277,125 +397,101 @@ class BaseRequest:
path = request.path = request['TraversalRequestNameStack']
# Check for method:
if path:
entry_name = path.pop()
elif hasattr(object, '__browser_default__'):
# If we have reached the end of the path. We look to see
# if the object implements __browser_default__. If so, we
# call it to let the object tell us how to publish it
# __browser_default__ returns the object to be published
entry_name = path.pop()
else:
# If we have reached the end of the path, we look to see
# if we can find IBrowserPublisher.browserDefault. If so,
# we call it to let the object tell us how to publish it
# BrowserDefault returns the object to be published
# (usually self) and a sequence of names to traverse to
# find the method to be published. (Casey)
request._hacked_path=1
object, default_path = object.__browser_default__(request)
if len(default_path) > 1:
path = list(default_path)
method = path.pop()
request['TraversalRequestNameStack'] = path
continue
# find the method to be published.
if (IBrowserPublisher.providedBy(object) or
IDefaultViewName.providedBy(object)):
adapter = object
else:
entry_name = default_path[0]
elif (method and hasattr(object,method)
and entry_name != method
and getattr(object, method) is not None):
request._hacked_path=1
entry_name = method
method = 'index_html'
else:
if (hasattr(object, '__call__')):
roles = getRoles(object, '__call__', object.__call__,
roles)
if request._hacked_path:
i=URL.rfind('/')
if i > 0: response.setBase(URL[:i])
break
adapter = queryMultiAdapter((object, self),
IBrowserPublisher)
if adapter is None:
# Zope2 doesn't set up its own adapters in a lot
# of cases so we will just use a default adapter.
adapter = DefaultPublishTraverse(object, self)
newobject, default_path = adapter.browserDefault(self)
if default_path or newobject is not object:
object = newobject
request._hacked_path=1
if len(default_path) > 1:
path = list(default_path)
method = path.pop()
request['TraversalRequestNameStack'] = path
continue
else:
entry_name = default_path[0]
elif (method and hasattr(object,method)
and entry_name != method
and getattr(object, method) is not None):
request._hacked_path=1
entry_name = method
method = 'index_html'
else:
if hasattr(object, '__call__'):
self.roles = getRoles(object, '__call__', object.__call__,
self.roles)
if request._hacked_path:
i=URL.rfind('/')
if i > 0: response.setBase(URL[:i])
break
step = quote(entry_name)
_steps.append(step)
request['URL'] = URL = '%s/%s' % (request['URL'], step)
got = 0
if entry_name[:1]=='_':
if debug_mode:
try:
subobject = self.traverseName(object, entry_name)
if (hasattr(object,'__bobo_traverse__') or
hasattr(object, entry_name)):
check_name = entry_name
else:
check_name = None
self.roles = getRoles(
object, check_name, subobject,
self.roles)
object = subobject
except (KeyError, AttributeError):
if response.debug_mode:
return response.debugError(
"Object name begins with an underscore at: %s" % URL)
else: return response.forbiddenError(entry_name)
if hasattr(object,'__bobo_traverse__'):
try:
subobject=object.__bobo_traverse__(request,entry_name)
if type(subobject) is type(()) and len(subobject) > 1:
# Add additional parents into the path
parents[-1:] = list(subobject[:-1])
object, subobject = subobject[-2:]
except (AttributeError, KeyError):
if debug_mode:
return response.debugError(
"Cannot locate object at: %s" % URL)
else:
return response.notFoundError(URL)
else:
try:
# Note - no_acquire_flag is necessary to support
# things like DAV. We have to make sure
# that the target object is not acquired
# if the request_method is other than GET
# or POST. Otherwise, you could never use
# PUT to add a new object named 'test' if
# an object 'test' existed above it in the
# heirarchy -- you'd always get the
# existing object :(
if (no_acquire_flag and len(path) == 0 and
hasattr(object, 'aq_base')):
if hasattr(object.aq_base, entry_name):
subobject=getattr(object, entry_name)
else: raise AttributeError, entry_name
else: subobject=getattr(object, entry_name)
except AttributeError:
got=1
try: subobject=object[entry_name]
except (KeyError, IndexError,
TypeError, AttributeError):
if debug_mode:
return response.debugError(
"Cannot locate object at: %s" % URL)
else:
return response.notFoundError(URL)
# Ensure that the object has a docstring, or that the parent
# object has a pseudo-docstring for the object. Objects that
# have an empty or missing docstring are not published.
doc = getattr(subobject, '__doc__', None)
if doc is None:
doc = getattr(object, '%s__doc__' % entry_name, None)
if not doc:
return response.debugError(
"The object at %s has an empty or missing " \
"docstring. Objects must have a docstring to be " \
"published." % URL
)
# Hack for security: in Python 2.2.2, most built-in types
# gained docstrings that they didn't have before. That caused
# certain mutable types (dicts, lists) to become publishable
# when they shouldn't be. The following check makes sure that
# the right thing happens in both 2.2.2+ and earlier versions.
if not typeCheck(subobject):
return response.debugError(
"The object at %s is not publishable." % URL
)
roles = getRoles(
object, (not got) and entry_name or None, subobject,
roles)
# Promote subobject to object
object=subobject
"Cannot locate object at: %s" % URL)
else:
return response.notFoundError(URL)
except Forbidden, e:
if self.response.debug_mode:
return response.debugError(e.args)
else:
return response.forbiddenError(entry_name)
parents.append(object)
steps.append(entry_name)
finally:
parents.reverse()
# Note - no_acquire_flag is necessary to support
# things like DAV. We have to make sure
# that the target object is not acquired
# if the request_method is other than GET
# or POST. Otherwise, you could never use
# PUT to add a new object named 'test' if
# an object 'test' existed above it in the
# heirarchy -- you'd always get the
# existing object :(
if (no_acquire_flag and
hasattr(parents[1], 'aq_base') and
not hasattr(parents[1],'__bobo_traverse__')):
if not (hasattr(parents[1].aq_base, entry_name) or
parents[1].aq_base.has_key(entry_name)):
raise AttributeError, entry_name
# After traversal post traversal hooks aren't available anymore
del self._post_traverse
......@@ -427,25 +523,25 @@ class BaseRequest:
auth=request._auth
if v is old_validation and roles is UNSPECIFIED_ROLES:
if v is old_validation and self.roles is UNSPECIFIED_ROLES:
# No roles, so if we have a named group, get roles from
# group keys
if hasattr(groups,'keys'): roles=groups.keys()
if hasattr(groups,'keys'): self.roles=groups.keys()
else:
try: groups=groups()
except: pass
try: roles=groups.keys()
try: self.roles=groups.keys()
except: pass
if groups is None:
# Public group, hack structures to get it to validate
roles=None
self.roles=None
auth=''
if v is old_validation:
user=old_validation(groups, request, auth, roles)
elif roles is UNSPECIFIED_ROLES: user=v(request, auth)
else: user=v(request, auth, roles)
user=old_validation(groups, request, auth, self.roles)
elif self.roles is UNSPECIFIED_ROLES: user=v(request, auth)
else: user=v(request, auth, self.roles)
while user is None and i < last_parent_index:
parent=parents[i]
......@@ -456,11 +552,11 @@ class BaseRequest:
if hasattr(groups,'validate'): v=groups.validate
else: v=old_validation
if v is old_validation:
user=old_validation(groups, request, auth, roles)
elif roles is UNSPECIFIED_ROLES: user=v(request, auth)
else: user=v(request, auth, roles)
user=old_validation(groups, request, auth, self.roles)
elif self.roles is UNSPECIFIED_ROLES: user=v(request, auth)
else: user=v(request, auth, self.roles)
if user is None and roles != UNSPECIFIED_ROLES:
if user is None and self.roles != UNSPECIFIED_ROLES:
response.unauthorized()
if user is not None:
......
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