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Description:

Products.PluggableAuthService 3.0

Products.PluggableAuthService

This product defines a fully-pluggable user folder, intended for
use in all Zope sites.

Installation
The normal way it install this package is via setuptools, either
via pip into a virtual environment:
$ cd /path/to/virtualenv
$ bin/pip install Products.PluggableAuthService
or by including the package in the configuration for a zc.buildout-based
deployment:
$ cd /path/to/buildout
$ grep "eggs =" buildout.cfg
...
eggs = Products.PluggableAuthService
...
The product can also be installed as a dependency of another distribution.

Documentation
Please see the files under doc/ in the packaged software for more
information, and consult the interfaces files under interfaces/ in
the software package for PluggableAuthService and plugin APIs.
The documentation is also online available at https://productspluggableauthservice.readthedocs.io/.

Change Log

3.0 (2024-01-22)

Drop support for Python 2.7, 3.5, 3.6.
Drop zserver extra in setup.py. Thus dropping FTP support.
Drop support for Zope < 5.

2.8.1 (2022-12-18)

Explicitly set the response Content-Type header where needed
due to the changed default content type from Zope#1075.

2.8.0 (2022-12-16)

Fix insidious buildout configuration bug for tests against Zope 4.
Add support for Python 3.11.

2.7.1 (2022-10-04)

Set the Cookie Auth Helper cookies with SameSite set to Lax by
default and allow admins to change the setting as well as the secure flag
from the Properties tab in the ZMI.
The SameSite cookie flag is not currently set, which causes modern
browsers to show warnings at the console. Such cookies may be rejected in the
future and break the Cookie Auth Helper. See
https://hacks.mozilla.org/2020/08/changes-to-samesite-cookie-behavior/
for information about the SameSite cookie attribute and why its handling
in browsers is changing.

2.7.0 (2022-01-04)

Add support for Python 3.10.
Improve the PAS override for Zope’s manage_zmi_logout (#107)
Fixed deprecation warning for AccessControl.AuthEncoding.
Pass the login name as updateCredentials’s login parameter
(not the user id) (#105).
Fix docstring of PluggableAuthService._extractUserIds.

2.6.4 (2021-07-28)

Fix method signature of PluggableAuthService._setObject
(#95)
Fix tests when running on Products.GenericSetup >= 2.1.2, thus requiring
at least that version.
ZMI: use flexbox for twolist macro, fixes removing roles in Safari browser.
(#91)

2.6.3 (2021-06-08)

Fix CSRF token access for tigher TAL path expression security in Zope 5.2.1
(#99)
Changed adding object gui to modal window
Handle login issues for cookie based login when came_from is missing
(#65)

2.6.2 (2021-03-12)

Tighten down security on several login string transformation methods
(#88)

2.6.1 (2021-02-26)

Fix remaining open redirect sources

2.6.0 (2021-02-23)

Fix missing access control on ZODB Role Manager enumerateRoles
Fix open redirect issue in Cookie Auth Helper redirect handling
Add support for Python 3.9.

2.5.1 (2020-11-13)

Fixed error assigning groups in manage_groups page in ZMI.
(#61,
#84)
Fix DeprecationWarnings occurring on Zope 5.

2.5 (2020-10-12)

Renamed xml dir to xml_templates.
This avoids an import warning on Python 2.7.
Disable ZMI CSRF check and log it if sessioning is not available
instead of breaking ZMI interactions
Clear caches before sending group user added/removed events
(#71)
Prevent creation of users/groups/roles with empty ID in the ZODB
(#70)
update configuration for version 5 of isort

2.4 (2020-02-09)

no longer rely on ZServer for any WebDAV-related functionality.
(#64)

2.3 (2020-02-02)

Replace all filter(None...) expressions which break under Python 3
(#63)

2.2.1 (2020-01-13)

Fix broken ICredentialsUpdatedEvent event handler call to updateCredentials.
(#59)

2.2 (2019-11-23)

Add new events to be able to notify when a principal is added to
or removed from a group. Notify these events when principals are
added or removed to a group in ZODBGroupManager
(#17)

2.1.1 (2019-10-23)

Fix bug in getRolesForPrincipal for non PAS user.

2.1 (2019-08-29)

Fix formatting in “Plugin Types” documentation.
Fixed error assigning roles in manage_roles page in ZMI.
See issues #43
and #51.

2.0 (2019-05-10)

Drop unused .utils.allTests method.

2.0b6 (2019-04-17)

fixed usage of deprecated im_self
(#40)

2.0b5 (2019-04-13)

fixed the “Configured PAS” factory
(#39)
styled “Configured PAS” add dialog for the Zope 4 ZMI
(#38)
prevent the ZMI add dialog showing in the Zope 4 ZMI
(#37)
added the indirect dependency Products.Sessions for the CSRF-support

2.0b4 (2019-04-04)

simplified Travis CI test configuration
added stricter linting configuration
added project_urls to the setup so PyPI shows more relevant links
added project badges to the README, which will show on the GitHub front page
Fix ZMI Templates and add ZMI icons for Zope 4
(#36)

2.0b3 (2019-03-29)

Fixed Dynamic Groups Plugin ZMI view
(#33)
Re-enabled XML-RPC support without requiring ZServer
(#34)
Specify supported Python versions using python_requires in setup.py
Added support for Python 3.8
Fix CSRF defense incompatibility with some session implementations

2.0b2 (2018-10-16)

Add support for Python 3.7.
Do not override a previously set response body in
HTTPBasicAuthHelper.challenge() allowing to set the response body via
an exception view in Zope >= 4.0b6.
Add new event to be able to notify group creation.
Refactoring to make it easier to override updateCredentials.

2.0b1 (2018-05-18)

The dependency on ZServer is now optional. To use the features which
require ZServer (WebDav, XML-RPC, FTP) use the setuptools extra zserver
when installing the package.
Do not fail when our base profiles are already registered.
This may happen in tests if our initialize code is called twice.
Add support for Python 3.
Reformatted code for PEP-8 compliance.
Require Zope 4.0b5 as minimum Zope version.

1.11.0 (2016-03-01)

Add new event to be able to notify group deletion.
Fix usage of os.path.split(). Could result in Errors during import
on Windows.

1.10.0 (2013-02-19)

Allow specifying a policy for transforming / normalizing login names
for all plugins in a PAS:

Added login_transform string property to PAS.
Added applyTransform method to PAS, which looks for a method on PAS
with the name specified in the login_transform property.
Added two possible transforms to PAS: lower and upper.
Changed the methods of PAS to call applyTransform wherever needed.
Added the existing updateUser method of ZODBUserManager to the
IUserEnumerationPlugin interface.
Added a new updateEveryLoginName method to ZODBUserManager and the
IUserEnumerationPlugin interface.
Added three methods to PAS and IPluggableAuthService:
updateLoginName, updateOwnLoginName, updateAllLoginNames.
These methods call updateUser or updateEveryLoginName on every
IUserEnumerationPlugin. Since these are later additions to the plugin
interface, we log a warning when a plugin does not have these methods
(for example the mutable_properties plugin of PlonePAS) but will
not fail. When no plugin is able to update a user, this will raise an
exception: we do not want to quietly let this pass when for example a
login name is already taken by another user.
Changing the login_transform property in the ZMI will call
PAS.updateAllLoginNames, unless login_transform is the same or
has become an empty string.
The new login_transform property is empty by default. In that case,
the behavior of PAS is the same as previously. The various
applyTransform calls will have a (presumably very small)
performance impact.

Launchpad #1079204: Added CSRF protection for the ZODBUserManager,
ZODBGroupManager, ZODBRoleManger, and DynamicGroupsPlugin plugins.

1.9.0 (2012-08-30)

Launchpad #649596: add a protocol for plugins which check whether a
non-top-level PAS instance is “competent” to authenticate a given request;
if not, the instance defers to higher-level instances. Thanks to Dieter
Maurer for the patch.

1.8.0 (2012-05-08)

Added export / import support for the ChallengeProtocolChooser plugin’s
label - protocols mapping.

1.7.8 (2012-05-08)

In authenticateCredentials do NOT fall back to using the login as
userid when there is no match, as that gives a high chance of
seeming to log in successfully, but in reality failing.
[maurits]

1.7.7 (2012-02-27)

Explicitly encode/decode data for GS

1.7.6 (2011-10-31)

Launchpad #795086: fixed creation of PropertiesUpdated event.

1.7.5 (2011-05-30)

Launchpad #789858: don’t allow conflicting login name in ‘updateUser’.
Set appropriate cache headers on CookieAuthHelper login redirects to prevent
caching by proxy servers.

1.7.4 (2011-05-13)

Added forward compatibility with DateTime 3.

1.7.3 (2011-02-10)

In the ZODBRoleManager made it clearer that adding a removing a role
does not have much effect if you do not do the same in the root of
the site (at the bottom of the Security tab at manage_access).
Fixes https://bugs.launchpad.net/zope-pas/+bug/672694
Return the created user in _doAddUser, to match change in
AccessControl 2.13.4.
Fixed possible binascii.Error in extractCredentials of
CookieAuthHelper. This is a corner case that might happen after
a browser upgrade.

1.7.2 (2010-11-11)

Allow for a query string in CookieAuthHelper’s login_path.
Trap “swallowable” exceptions from IRoles plugins. Thanks to
Willi Langenburger for the patch. Fixes
https://bugs.launchpad.net/zope-pas/+bug/615474 .
Fixed possible TypeError in extractCredentials of CookieAuthHelper
when the __ac cookie is not ours (but e.g. from plone.session,
though even then only in a corner case).
Fixed chameleon incompatibilities

1.7.1 (2010-07-01)

Made ZODBRoleManager.assignRoleToPrincipal raise and log a more
informative error when detecting a duplicate principal.
https://bugs.launchpad.net/zope-pas/+bug/348795
Updated DynamicGroupsPlugin.enumerateGroups to return an empty sequence
for an unknown group ID, rather than raising KeyError.
https://bugs.launchpad.net/zope-pas/+bug/585365
Updated all code to raise new-style exceptions.
Removed dependency on zope.app.testing.
Cleaned out a number of old imports, because we now require Zope >= 2.12.
Updated setDefaultRoles to use the addPermission API if available.

1.7.0 (2010-04-08)

Allow CookieAuthHelper’s login_path to be set to an absolute url for
integration with external authentication mechanisms.
Fixed xml templates directory path computation to allow reuse of
SimpleXMLExportImport class outside Products.PluggableAuthService.

1.7.0b2 (2010-01-31)

Modify ZODBGroupManager to update group title and description independently.

1.7.0b1 (2009-11-16)

This release requires for Zope2 >= 2.12.
Simplified buildout to just what is needed to run tests.
Don’t fail on users defined in multiple user sources on the
ZODBGroupManager listing page.
Fixed deprecation warnings for use of Globals under Zope 2.12.
Fixed deprecation warnings for the md5 and sha modules under
Python >= 2.6.
Added test for multiple auth header support in the HTTPBasicAuthHelper.
Changed HTTPBasicAuthHelper to not rely on one obscure feature of the
HTTPResponse.

1.6.2 (2009-11-16)

Launchpad #420319: Fix misconfigured startswith match type filter
in Products.PluggableAuthService.plugins.DomainAuthHelper.
Fixed test setup for tests using page templates relying on the
DefaultTraversable adapter.
Fixed broken markup in templates.

1.6.1 (2008-11-20)

Launchpad #273680: Avoid expensive / incorrect dive into enumerateUsers
when trying to validate w/o either a real ID or login.
Launchpad #300321:
Products.PluggableAuthService.pluginsZODBGroupManager.enumerateGroups
failed to find groups with unicode IDs.

1.6 (2008-08-05)

Fixed another deprecation for manage_afterAdd occurring when used
together with Five (this time for the ZODBRoleManager class).
Ensure the _findUser cache is invalidated if the roles or groups for
a principal change.
Launchpad #15569586: docstring fix.
Factored out filter logic into separate classes; added filters
for startswith test and (if the IPy module is present) IP-range
tests. See https://bugs.launchpad.net/zope-pas/+bug/173580 .
Zope 2.12 compatibility - removed Interface.Implements import if
zope.interface available.
Ensure ZODBRoleManagerExportImport doesn’t fail if it tries to add a
role that already exists (idempotence is desirable in GS importers)
Fixed tests so they run with Zope 2.11.
Split up large permission tests into individual tests.
Fixed deprecation warning occurring when used together with
Five. (manage_afterAdd got undeprecated.)
Added buildout.

1.5.3 (2008-02-06)

ZODBUserManager plugin: allow unicode arguments to
enumerateUsers. (https://bugs.launchpad.net/zope-pas/+bug/189627)
plugins/ZODBRoleManager: added logging in case searchPrincipial()
returning more than one result (which might happen in case of having
duplicate id within difference user sources)

1.5.2 (2007-11-28)

DomainAuthHelper plugin: fix glitch for plugins which have never
configured any “default” policy: authenticateCredentials and
getRolesForPrincipal would raise ValueError.
(http://www.zope.org/Collectors/PAS/59)

1.5.1 (2007-09-11)

PluggableAuthService._verifyUser: changed to use exact_match to the
enumerator, otherwise a user with login foobar might get returned
by _verifyUser for a query for login='foo' because the enumerator
happened to return ‘foobar’ first in the results.
Add a test for manage_zmi_logout and replace a call to isImplementedBy
with providedBy.
(http://www.zope.org/Collectors/PAS/58)

1.5 (2006-06-17)

Add support for property plugins returning an IPropertySheet
to PropertiedUser. Added addPropertysheet to the IPropertiedUser.
Added a method to the IRoleAssignerPlugin to remove roles from a
principal, and an implementation for it on the ZODBRoleManager.
(http://www.zope.org/Collectors/PAS/57)
Added events infrastructure. Enabled new IPrincipalCreatedEvent and
ICredentialsUpdatedEvent events.
Added support for registering plugin types via ZCML.
Implemented authentication caching in _extractUserIds.
Ported standard user folder tests from the AccessControl test suite.
Passwords with “:” characters would break authentication
(http://www.zope.org/Collectors/PAS/51)
Corrected documented software dependencies
Converted to publishable security sensitive methods to only accept
POST requests to prevent XSS attacks. See
http://www.zope.org/Products/Zope/Hotfix-2007-03-20/announcement and
http://dev.plone.org/plone/ticket/6310
Fixed issue in the user search filter where unrecognized keyword
arguments were ignored resulting in duplicate search entries.
(http://dev.plone.org/plone/ticket/6300)
Made sure the Extensions.upgrade script does not commit full
transactions but only sets (optimistic) savepoints. Removed bogus
Zope 2.7 compatibility in the process.
(http://www.zope.org/Collectors/PAS/55)
Made the CookieAuthHelper only use the __ac_name field if
__ac_password is also present. This fixes a login problem for
CMF sites where the login name was remembered between sessions with
an __ac_name cookie.
Made the DomainAuthHelper return the remote address, even it the
remote host is not available (http://www.zope.org/Collectors/PAS/49).
Fixed bug in DelegatingMultiPlugin which attempted to validate the
supplied password directly against the user password - updated to use
AuthEncoding.pw_validate to handle encoding issues
Fixed serious security hole in DelegatingMultiPlugin which allowed
Authentication if the EmergencyUser login was passed in. Added
password validation utilizing AuthEncoding.pw_validate
Fixed a set of tests that tested values computed from dictionaries
and could break since dictionaries are not guaranteed to have any
sort order.
Fixed test breakage induced by use of Z3 pagetemplates in Zope
2.10+.
BasePlugin: The listInterfaces method only considered the old-style
__implements__ machinery when determining interfaces provided by
a plugin instance.
ZODBUserManager: Already encrypted passwords were encrypted again in
addUser and updateUserPassword.
(http://www.zope.org/Collectors/Zope/1926)
Made sure the emergency user via HTTP basic auth always wins, no matter
how borken the plugin landscape.
Cleaned up code in CookieAuthHelper which allowed the form to override
login/password if a cookie had already been set.
Removed some BBB code for Zope versions < 2.8, which is not needed
since we require Zope > 2.8.5 nowadays.

1.4 (2006-08-28)

Extended the DomainAuthHelper to function as its own extraction
plugin, to allow for the case that another extractor is registered,
but does not return any credentials.
(http://www.zope.org/Collectors/PAS/46)
Re-worded parts of the README so they don’t point to specific or
non-existing files (http://www.zope.org/Collectors/PAS/6 and
http://www.zope.org/Collectors/PAS/47)

1.4-beta (2006-08-07)

Created a “Configured PAS” entry in the ZMI add list, which
allows creating a PAS using base and extension GenericSetup profiles
registered for IPluggableAuthService. This entry should eventually
replace the “stock” PAS entry (assuming that we make GenericSetup
a “hard” dependency).
Added an “empty” GenericSetup profile, which creates a PAS containing
only a plugin registry and a setup tool.
Repaired the “simple” GenericSetup profile to be useful, rather than
catastrophic, to apply: it now creates and registers a set of
ZODB-based user / group / role plugins, along with a basic auth
helper.
ZODBUserManager: Extend the “notional IZODBUserManager interface”
with the left-out updateUser facility and a corresponding
manage_updateUser method for ZMI use. Removed any responsibility
for updating a user’s login from the updateUserPassword and
manage_updateUserPassword methods. This fixes the breakage
described in the collector issue below, and makes the ZMI view
for updating users work in a sane way.
(http://www.zope.org/Collectors/PAS/42)
CookieAuthHelper: If expireCookie was called and extractCredentials
was hit in the same request, the CookieAuthHelper would throw an
exception (http://www.zope.org/Collectors/PAS/43)
Added a DEPENDENCIES.txt. (http://www.zope.org/Collectors/PAS/44)

1.3 (2006-06-09)

No changes from version 1.3-beta

1.3-beta (2006-06-03)

Modify CookieAuthHelper to prefer __ac form variables to the cookie
when extracting credentials.
(https://dev.plone.org/plone/ticket/5355)

1.2 (2006-05-14)

Fix manage_zmi_logout which stopped working correctly as soon as the
PluggableAuthService product code was installed by correcting the
monkeypatch for it in __init__.py.
(http://www.zope.org/Collectors/PAS/12)
Add missing interface for IPropertiedUser and tests
(http://www.zope.org/Collectors/PAS/16)
Removed STX links from README.txt which do nothing but return
404s when clicked from the README on zope.org.
(http://www.zope.org/Collectors/PAS/6)
Fixing up inconsistent searching in the listAvailablePrincipals
method of the ZODBRoleManager and ZODBGroupManager plugins. Now both
constrain searches by ID.
(http://www.zope.org/Collectors/PAS/11)
Convert from using zLOG to using the Python logging module.
(http://www.zope.org/Collectors/PAS/14)

1.2-beta (2006-02-25)

Added suppport for exporting / importing a PAS and its content via
the GenericSetup file export framework.
Made ZODBRoleManager plugin check grants to the principal’s groups,
as well as those made to the principal directly.
Added two new interfaces, IChallengeProtocolChooser and
IRequestTypeSniffer. Those are used to select the ‘authorization
protocol’ or ‘challenger protocol’ to be used for challenging
according to the incoming request type.
Repaired warings appearing in Zope 2.8.5 due to a couple typos
in security declarations.
Repaired DeprecationWarnings due to use of Zope2 interface verification.
Repaired unit test breakage (unittest.TestCase instances have
‘failUnless’/’failIf’, rather than ‘assertTrue’/’assertFalse’).
Fixed a couple more places where Zope 2-style __implements__
were being used to standardize on using classImplements.
Fixed fallback implementations of providedBy and
implementedBy to always return a tuple.
Make sure challenge doesn’t break if existing instances of the
PluginRegistry don’t yet have IChallengeProtocolChooser as a
registered interface. (Would be nice to have some sort of
migration for the PluginRegistry between PAS releases)
Don’t assume that just because zope.interface can be imported
that Five is present.

1.1b2 (2005-07-14)

Repaired a missing ‘nocall:’ in the Interfaces activation form.

1.1b1 (2005-07-06)

PAS-level id mangling is no more. All (optional) mangling is now
done on a per-plugin basis.
Interfaces used by PAS are now usable in both Zope 2.7 and 2.8
(Five compatible)

1.0.5 (2005-01-31)

Simplified detection of the product directory using ‘package_home’.
Set a default value for the ‘login’ attribute of a PAS, to avoid
UnboundLocalError.

1.0.4 (2005-01-27)

Made ‘Extensions’ a package, to allow importing its scripts
as modules.
Declared new ‘IPluggableAuthService’ interface, describing additional
PAS-specific API.
Exposed PAS’ ‘resetCredentials’ and ‘updateCredentials’ as public
methods.
Monkey-patch ZMI’s logout to invoke PAS’ ‘resetCredentials’, if
present.
CookieAuth plugin now encodes and decodes cookies in the same
format as CookieCrumbler to provide compatibility between
sites running PAS and CC.
Add a publicly callable “logout” method on the PluggableAuthService
instance that will call resetCredentials on all activated
ICredentialsRest plugins, thus effecting a logout.
Enabled the usage of the CookieAuthHelper login screen functionality
without actually using the CookieAuthHelper to maintain the
credentials store in its own auth cookie by ensuring that only
active updateCredentials plugins are informed about a successful
login so they can store the credentials.
Added a _getPAS method to the BasePlugin base class to be used
as the canonical way of getting at the PAS instance from within
plugins.
Group and user plugins can now specify their own title for a
principal entry (PAS will not compute one if they do).
PAS and/or plugins can now take advantage of caching using the
Zope ZCacheable framework with RAM Cache Managers. See
doc/caching.stx for the details.
Make ‘getUserById’ pass the ‘login’ to ‘_findUser’, so that
the returned user object can answer ‘getUserName’ sanely.
Harden ‘logout’ against missing HTTP_REFERRER.
Avoid triggering “Emergency user cannot own” when adding a
CookieAuthHelper plugin as that user.
Detect and prevent recursive redirecting in the CookieAuthHelper
if the login_form cannot be reached by the Anonymous User.
Made logging when swallowing exceptions much less noisy (they
don’t necessarily require attention).
Clarified interface of IAuthenticationPlugin, which should return
None rather than raising an exception if asked to authenticate an
unknown principal; adjusted ZODBUserManager accordingly.
Don’t log an error in zodb_user_plugin’s authenticateCredentials
if we don’t have a record for a particular username, just return None.
If an IAuthenticationPlugin returns None instead of a tuple
from authenticateCredentials, don’t log a tuple-unpack error in PAS
itself.

1.0.3 (2004-10-16)

Implemented support for issuing challenges via IChallengePlugins.

three challenge styles in particular:

HTTP Basic Auth
CookieCrumbler-like redirection
Inline authentication form

Made unit tests pass when run with cAccessControl.
plugins/ZODBRoleManager.py: don’t claim authority for ‘Authenticated’
or ‘Anonymous’ roles, which are managed by PAS.
plugins/ZODBRoleManager.py: don’t freak out if a previously assigned
principal goes away.
plugins/ZODBGroupManager.py: don’t freek out if a previously assigned
principal goes away.
plugins/ZODBUserManager.py: plugin now uses AuthEncoding for its
password encryption so that we can more easily support migrating
existing UserFolders. Since PAS has been out for a while,
though, we still will authenticate against old credentials
Repaired arrow images in two-list ZMI views.
searchPrincipals will work for exact matches when a plugin supports
both ‘enumerateUsers’ and ‘enumerateGroups’.
‘Authenticated’ Role is now added dynamically by the
PluggableAuthService, not by any role manager
Added WARNING-level logs with tracebacks for all swallowed
plugin exceptions, so that you notice that there is something
wrong with the plugins.
All authenticateCredentials() returned a single None when they
could not authenticate, although all calls expected a tuple.
The user id in extract user now calls _verifyUser to get the ID
mangled by the enumeration plugin, instead of mangling it with the
authentication ID, thereby allowing the authentication and
enumeration plugins to be different plugins.

1.0.2 (2004-07-15)

ZODBRoleManager and ZODBGroupManager needed the “two_lists” view,
and associated images, which migrated to the PluginRegsitry product
when they split; restored them.

1.0.1 (2004-05-18)

CookieAuth plugin didn’t successfully set cookies (first, because
of a NameError, then, due to a glitch with long lines).
Missing ZPL in most modules.

1.0 (2004-04-29)

Initial release