[Checkins] SVN: Sandbox/ulif/megrok.login/src/megrok/login/authplugins.py Copy fallback authentication plugin.

[Uli Fouquet]

Log message for revision 93748:
  Copy fallback authentication plugin.

Changed:
  A   Sandbox/ulif/megrok.login/src/megrok/login/authplugins.py

-=-
Copied: Sandbox/ulif/megrok.login/src/megrok/login/authplugins.py (from rev 93747, Sandbox/ulif/fallback-auth/trunk/src/z3c/fallbackauth/authplugins.py)
===================================================================
--- Sandbox/ulif/megrok.login/src/megrok/login/authplugins.py	                        (rev 0)
+++ Sandbox/ulif/megrok.login/src/megrok/login/authplugins.py	2008-12-07 16:59:27 UTC (rev 93748)
@@ -0,0 +1,83 @@
+##############################################################################
+#
+# Copyright (c) 2008 Zope Corporation and Contributors.
+# All Rights Reserved.
+#
+# This software is subject to the provisions of the Zope Public License,
+# Version 2.1 (ZPL).  A copy of the ZPL should accompany this distribution.
+# THIS SOFTWARE IS PROVIDED "AS IS" AND ANY AND ALL EXPRESS OR IMPLIED
+# WARRANTIES ARE DISCLAIMED, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+# WARRANTIES OF TITLE, MERCHANTABILITY, AGAINST INFRINGEMENT, AND FITNESS
+# FOR A PARTICULAR PURPOSE.
+#
+##############################################################################
+
+from zope.app.authentication.interfaces import IAuthenticatorPlugin
+from zope.app.authentication.interfaces import IQuerySchemaSearch
+from zope.app.authentication.principalfolder import PrincipalInfo
+from zope.app.authentication.principalfolder import ISearchSchema
+from zope.app.security.principalregistry import principalRegistry
+from zope.interface import implements
+
+class PrincipalRegistryAuthenticator(object):
+    """An authenticator plugin, that authenticates principals against
+    the global principal registry.
+
+    This authenticator does not support own prefixes, because the
+    prefix of its principals is already defined in another place
+    (site.zcml). Therefore we get and give back IDs as they are.
+    """
+
+    implements(IAuthenticatorPlugin, IQuerySchemaSearch)
+
+    schema = ISearchSchema
+
+    def authenticateCredentials(self, credentials):
+        """Return principal info if credentials can be authenticated
+        """
+        if not isinstance(credentials, dict):
+            return None
+        if not ('login' in credentials and 'password' in credentials):
+            return None
+        principal = None
+        login, password = credentials['login'], credentials['password']
+        try:
+            principal = principalRegistry.getPrincipalByLogin(login)
+        except KeyError:
+            return
+        if principal and principal.validate(password):
+            return PrincipalInfo(u''+principal.id,
+                                 principal.getLogin(),
+                                 principal.title,
+                                 principal.description)
+        return
+
+    def principalInfo(self, id):
+        principal = principalRegistry.getPrincipal(id)
+        if principal is not None:
+            return PrincipalInfo(u''+principal.id,
+                                 principal.getLogin(),
+                                 principal.title,
+                                 principal.description)
+
+
+    def search(self, query, start=None, batch_size=None):
+        """Search through this principal provider.
+        """
+        search = query.get('search')
+        if search is None:
+            return
+        search = search.lower()
+        n = 1
+        values = [x for x in principalRegistry.getPrincipals('')
+                  if x is not None]
+        values.sort(cmp=lambda x,y: cmp(str(x.id), str(y.id)))
+        for i, value in enumerate(values):
+            if (search in value.id.lower() or
+                search in value.title.lower() or
+                search in value.description.lower() or
+                search in value.getLogin().lower()):
+                if not ((start is not None and i < start)
+                        or (batch_size is not None and n > batch_size)):
+                    n += 1
+                    yield u''+value.__name__