Merge lp:~abentley/launchpad/info-type-adds-policy into lp:launchpad

[Aaron Bentley]

Product information_type access policy is retained.

= Summary =
Fix bug #1074139: Setting policies different from project information_type locks the owner out

== Proposed fix ==
Update Product._pruneUnusedPolicies to consider Product.information_type when determining which policies can be deleted.

== Pre-implementation notes ==
None

== LOC Rationale ==
Part of private products.

== Implementation details ==
Cleaned up some lint as a driveby.

== Tests ==
bin/test -t test_information_type_prevents_pruning product

== Demo and Q/A ==
Create a Proprietary product. Change all the sharing policies to Public. You should still be able to see the product, and you should be listed under Proprietary.

= Launchpad lint =

Checking for conflicts and issues in changed files.

Linting changed files:
  lib/lp/registry/model/product.py
  lib/lp/registry/tests/test_product.py

[Curtis Hovey (sinzui)]

I am surprised this fixes the issue. cr3 had a Public project, then made it Proprietary using +edit; he was locked out. I looked at the project and discovered 2 things wrong.

1. The sharing policies where not updated to reflect the transitive state of the project...the sharing policies were not changed to Proprietary.
2. Proprietary was not shared with the Maintainer.

I change a policy to proprietary, which automatically shared shared all proprietary with the maintainer, which restored cr3's access to the project. I then set the other sharing policies to Proprietary only.

LATER, cr3 made some sharing polices Public, but he was not locked out since Proprietary was still shared. I changed the Polices back to Proprietary because though Bugs and Blueprints could claimed to be public, they cannot be because privacy is transitive; staking a Public branch on a Proprietary branch is possible, but the branch will become Proprietary. A bug cannot really be public because the project/bug is not shared with the 1 million Lp users, and you cannot share any public information type.

[Aaron Bentley (abentley)]

Curtis, I started off with the assumption that making a public project proprietary could cause this bug, but I was unable to write a test case demonstrating this, because Product._set_information_type ensures that the appropriate access policy exists for the product's information type. That's why I wrote "It appears that the case where information_type is changed is already covered" in the bug. I'd be very interested if you can demonstrate otherwise.

I attempted to get more information from cr3, but he did not respond on IRC. So I proceeded with the assumption that the cause of the bug was different from what we originally supposed-- that changing the access policies, not changing the information type, had locked the user out.

I know you feel that privacy should be transitive, but that's orthagonal to this bug, because this bug can be exhibited even when no elements are public. As I noted in the bug: "However, there is another case: the project is Embargoed and the sharing policies are all proprietary. This situation would not be forbidden by Curtis's rule."

So let's keep this bug being about the fact that the maintainer can be locked out of their own product. Please file a separate bug for the lack of transitivity between Product and its policies. Deryck and I do not agree with you on that matter, but AIUI Deryck plans to discuss it with you.

[Benji York (benji)]

Thanks for the branch. Everything looks good to me.

review: Approve (code)

=== modified file 'lib/lp/registry/model/product.py'
--- lib/lp/registry/model/product.py	2012-10-26 17:58:33 +0000
+++ lib/lp/registry/model/product.py	2012-11-02 20:18:23 +0000
@@ -704,6 +704,7 @@
         )
         allowed_types = allowed_bug_types.union(allowed_branch_types)
         allowed_types = allowed_types.union(allowed_specification_types)
+        allowed_types.add(self.information_type)
         # Fetch all APs, and after filtering out ones that are forbidden
         # by the bug, branch, and specification policies, the APs that have no
         # APAs are unused and can be deleted.

=== modified file 'lib/lp/registry/tests/test_product.py'
--- lib/lp/registry/tests/test_product.py	2012-10-26 17:58:33 +0000
+++ lib/lp/registry/tests/test_product.py	2012-11-02 20:18:23 +0000
@@ -909,6 +909,21 @@
                 self.assertTrue(check_permission('launchpad.View', product))
             self.assertFalse(check_permission('launchpad.View', product))
 
+    def test_information_type_prevents_pruning(self):
+        # Access policies for Product.information_type are not pruned.
+        owner = self.factory.makePerson()
+        for info_type in [
+            InformationType.PROPRIETARY, InformationType.EMBARGOED]:
+            product = self.factory.makeProduct(
+                information_type=info_type, owner=owner)
+            with person_logged_in(owner):
+                product.setBugSharingPolicy(BugSharingPolicy.PUBLIC)
+                product.setSpecificationSharingPolicy(
+                    SpecificationSharingPolicy.PUBLIC)
+                product.setBranchSharingPolicy(BranchSharingPolicy.PUBLIC)
+            self.assertIsNot(None, getUtility(IAccessPolicySource).find(
+                [(product, info_type)]).one())
+
 
 class TestProductBugInformationTypes(TestCaseWithFactory):
 
@@ -1877,7 +1892,7 @@
     def test_users_private_products(self):
         # Ignore any public products the user may own.
         owner = self.factory.makePerson()
-        public = self.factory.makeProduct(
+        self.factory.makeProduct(
             information_type=InformationType.PUBLIC,
             owner=owner)
         proprietary = self.factory.makeProduct(
@@ -1990,9 +2005,9 @@
         product = self.factory.makeProduct(
             owner=owner, translations_usage=ServiceUsage.LAUNCHPAD)
         series = self.factory.makeProductSeries(product)
-        po_template = self.factory.makePOTemplate(productseries=series)
+        self.factory.makePOTemplate(productseries=series)
         with person_logged_in(owner):
-            product.information_type=InformationType.PROPRIETARY
+            product.information_type = InformationType.PROPRIETARY
         # Anonymous users do not see private products.
         with person_logged_in(ANONYMOUS):
             translatables = getUtility(IProductSet).getTranslatables()