Commit Graph

20 Commits

Author SHA1 Message Date
Ryan Mitchell
fb4d09cadd Read manifest values using resource id in idmap2
Idmap2 currently reads android:targetPackage and android:targetName
from overlay manifests by looking for an attribute with the name of
the attribute resource.

This fixes the divergence from package parsing by finding the
attributes using their resource ids.

Bug: 175060836
Test: libidmap2_tests
Change-Id: I09965e5880a1e6c48c3f8077db0c595484804ce7
2021-01-08 13:36:35 -08:00
Ryan Mitchell
30dc2e0171 Accept --overlay-name flag in idmap2
To support allowing for multiple <overlay> tags in one package, idmap2
must be able to generate an idmap for an individual <overlay> tag.

`idmap2 create` now accepts a --overlay-name flag that specifies which
tag to use to generate the idmap. The value of --overlay-name should be
set to the value of the android:name attribute on the <overlay> tag to
use.

If the flag is not present, idmap2 will look for an <overlay> tag with
no value for android:name.

Bug: 162841629
Test: libandroidfw_tests
Test: libidmap2_tests
Change-Id: I02316d0b88773f02c04a5d462be9825016fa496d
2021-01-06 16:19:53 -08:00
Zoran Jovanovic
9336d9e13b OMS: Add config_signature policy handling
Alongside SIGNATURE and ACTOR_SIGNATURE policies, add CONFIG_SIGNATURE
policy to overlayable that overlay fulfills if it is signed with the
same certificate as the reference package whose package name is
declared in 'config-signature' tag of SystemConfig and is vetted by
OMS that it's a system pre-installed package.

BUG: 158726924
TEST: regular aapt2, idmap2, OMS tests

Change-Id: I645ee72271496008742886274be0d63a2985201b
2020-07-28 18:30:53 +00:00
Winson
f56ade365a Actor signature overlayable policy
There are cases where an app can ship overlays for itself,
but the "signature" policy as described would open up
a vulnerability by allowing the system actor to create
and sign any arbitrary overlay that will apply to the target.

To prevent this, redefine "signature" as target package only,
and introduce "actor" for checking against the actor signature.
Any app that wishes to use both can include both policies.

Bug: 130563563

Test: m aapt2_tests idmapt2_tests and run from host test output
Test: atest libandroidfw_tests

Change-Id: I1c583a5b37f4abbeb18fc6a35c502377d8977a41
2020-02-26 15:59:44 -08:00
Ryan Mitchell
5035d66aee Fix resourcesMap to work with shared libraries
android:resourcesMap is not working at all with shared libraries.
This change fixes that so overlays built as shared libraries can
use the attribute.

Bug: None
Test: idmap2_tests
Change-Id: I767481f88c58892a3818a919616056291b09b57e
2020-02-06 16:25:35 -08:00
Ryan Mitchell
9e4f52b2e5 Parse <overlay> and abstract resource mapping
This change introduces idmap parsing of <overlay> tags.

The <overlay> tag allows one to explicitly map resources in the target
to either a resource in the overlay or an inline attribute value.

Use the android:resourcesMap atttribute on the <overlay> tag in the
android manifest to specify a file to provide the resource mapping.

Bug: 135943783
Bug: 135051420
Test: idmap2_tests
Change-Id: I1740dcdc01849c43b1f2cb8c6645d666dbb05dba
2019-10-04 16:11:37 -07:00
Ryan Mitchell
cd965a3224 Improve idmap2 xml parsing
To parse the <overlay> tags for internal overlay references, we require
the ability to parse XML. The current implementation only allows idmap2
to find a tag somewhere in an xml file.

This implementation allows for the retrieval of an iterator that
iterates over direct children xml elements. Now we can enforce that the
<overlay> tag in the manifest is nested within the <manifest> tag and we
can ensure <item> tags are within the <overlay> tags of the overlay
resource configuration xml.

Bug: 135051420
Bug: 135943783
Test: idmap2_tests
Change-Id: I12f965b55c18960af6cf9dc6ca46429f53124c9a
2019-10-04 16:10:57 -07:00
Ryan Mitchell
09f17a6cf7 Revert "Improve idmap2 xml parsing"
This reverts commit 58cdc2a822.

Reason for revert: <aosp/1129572 caused a build failure>

Change-Id: Iecae19877dacf9ec5c2b2bc59dca362f573e9a7a
2019-10-02 23:03:16 +00:00
Ryan Mitchell
58cdc2a822 Improve idmap2 xml parsing
To parse the <overlay> tags for internal overlay references, we require
the ability to parse XML. The current implementation only allows idmap2
to find a tag somewhere in an xml file.

This implementation allows for the retrieval of an iterator that
iterates over direct children xml elements. Now we can enforce that the
<overlay> tag in the manifest is nested within the <manifest> tag and we
can ensure <item> tags are within the <overlay> tags of the overlay
resource configuration xml.

Bug: 135051420
Bug: 135943783
Test: idmap2_tests
Change-Id: I1a1c4329514eb63b7575c4376adc0d8cda217269
2019-10-01 15:41:56 -07:00
Ryan Mitchell
939df096be Add odm and oem policies
This change adds parsing, encoding, and validating of odm and oem
overlayable policies to aapt2, libandroidfw, and idmap2.

Bug: 121033532
Test: aapt2_tests, idmap2_tests
Change-Id: Ifc0d4b6c9f9c37e06b2988abade69dbb277c50c2
2019-04-17 16:07:57 -07:00
Ryan Mitchell
0503fa5614 Do not fail idmap scan if one idmap fails to generate
If one static overlay fails to have its idmap generated, continue
scanning other overlays.

Bug: 130324774
Test: idmap2_tests and manual
Change-Id: I06a74c844ebc81dcfb5b50e8c9a30a68c7e4ffb0
2019-04-15 15:03:06 -07:00
Mårten Kongstad
bf08f0a4eb OMS: stabilize unit tests
- Add hasCode=false to overlay packages as a workaround for b/124375490

- Sprinkle Thread.sleeps in InstallOverlayTests in an attempt to make
  the tests less flakey when executed on emulator

Test: atest OverlayDeviceTests OverlayHostTests
Change-Id: I745a8477ed5e72db572737a0af0e59478893e42b
2019-03-19 15:37:04 -07:00
Ryan Mitchell
b863ca3348 Revert "Revert "Enforce a default policy on packages without <overlayable>""
This reverts commit 6ce5b00f2a.

Bug: 127835630
Test: manual and idmap2_tests
2019-03-07 14:31:54 -08:00
Ryan Mitchell
6ce5b00f2a Revert "Enforce a default policy on packages without <overlayable>"
This reverts commit 48945224bd.

Reason for revert: <b/127835630>

Change-Id: I0bc90c26e5b7d6b4d94704a2a1f92bbc889c025c
2019-03-07 21:58:14 +00:00
Ryan Mitchell
48945224bd Enforce a default policy on packages without <overlayable>
In order to lift the signature/preinstalled install restrictions on overlays,
we must protect packages that have not migrated to <overlayable> from
being overlaid. If a resources is not specified as overlayable and the
overlay does not define an <overlayable>, require the overlay to be
preinstalled or signed with the same signature as the target.

Bug: 121016681
Bug: 125933494
Test: idmap2_tests
Change-Id: I38f520929031b743e4bbe0366a9be55aac5795c5
2019-03-07 16:37:10 +00:00
Winson
b410020881 idmap2: add signature policy
Handles the new signature policy for overlayable resources.

Bug: 119402606

Test: idmap2_tests target

Change-Id: I7961e04a879c40c240ed9097bb510addb8b56680
2019-02-15 17:29:48 -08:00
Ryan Mitchell
198234502b Enforce overlayable API when defined
If a package defines overlayable resources, then do not allow resources
that are not defined as overlayable to be overlaid.

Bug:123600120
Test: idmap2_tests and cts-tradefed run cts -m CtsRROTestCases
Change-Id: I35120a97ccf4650e67c7ba65a60f4f3c51b0e627
2019-02-05 07:56:50 -08:00
Ryan Mitchell
a362846d4d Add enforcement of overlayable targetName
Adds android:targetName to the overlay manifest attributes and
PackageParser reads the name into PackageInfo. Specifying
android:targetName on an overlay allows the overlay to be associated
with a particular set of overlayable resources. The overlay can only
override the values of the resources defined within the target
overlayable element.

Test: idmap2_tests
Bug: 119390855
Bug: 110869880

Change-Id: I1128274af4cae983f61ae15cdfcbface63233ff2
2019-01-18 11:47:20 -08:00
Mårten Kongstad
d10d06d0b0 Add enforcement of idmap policies
Teaches idmap2 to recognize policy restrictions put on overlayable
resources. If overlayable enforcement is turned on for an overlay, then
any resources defined within the overlayable api of the target will have
policy restrictions imposed on them. All resources without overlayable
definitions will continue to be overlayable without policy restrictions.

Bug: 119390857
Test: atest idmap2 and booting

Co-authored-by: Ryan Mitchell <rtmitchell@google.com>
Change-Id: I7e435648eb6e4a87b0b90a7b2a0c3f33c1516ea6
2019-01-16 11:47:24 -08:00
Mårten Kongstad
0275123eef idmap2: initial code drop
idmap2 is a reboot of the idmap project. The project aims to

  - use modern C++
  - greatly improve test and debug support
  - interface towards AssetManager2 (instead of AssetManager)
  - provide a solid foundation to add support for new features

To make it easier to verify correctness, this first version of idmap2 is
feature equivalent to idmap. Later versions will add support for new
features such as <overlayable>.

Bug: 78815803
Test: make idmap2_tests
Change-Id: I1d806dc875a493e730ab55d2fdb027618e586d16
2018-10-30 04:37:41 -07:00