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* Add fabricated RRO generation to libidmap2Ryan Mitchell2021-02-091-15/+11
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Fabricated Runtime Resource Overlays are overlays that are generated at runtime and are stored in the data/ partition. The system can fabricate RROs at runtime to dynamically theme the device. Idmaps can now be created from APK RROs and fabricated RROs. Rather than operating on ApkAssets, libidmap2 now operates on abstract resource "containers" that supply resource values. Target resource containers implement methods needed to query overlayable and target overlay information. Currently only APKs can be loaded as target resource containers. Overlay resource containers implement methods to supply the mapping of target resource to overlay value and other overlay information. The format of a fabricated RRO is as follows: 0x00 - 0x04 : fabricated overlay magic (always FRRO) 0x04 - 0x08 : file format version 0x08 - 0x0c : crc of version + proto data 0x0c - EOF : proto fabricated overlay data The magic is used to quickly detect if the file is a fabricated overlay. The version is incremented whenever backwards incompatible changes are made to the proto file format. Idmap must always be able to upgrade fabricated overlays from previous versions to new versions, so all previous versions must be checked into the tree. Bug: 172471315 Test: libidmap2_tests && libandroidfw_tests Change-Id: I4c9f29da278672e5695fb57d131a44c11a835180
* Accept --overlay-name flag in idmap2Ryan Mitchell2021-01-061-8/+8
| | | | | | | | | | | | | | | | | | 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
* Remove malloc/free for inline overlay valuesRyan Mitchell2020-10-141-2/+3
| | | | | | | | | | | | | | | | | | Remove malloc/free of android::ResTable_entry for inline overlay values. Add `target_entry_inline` to the idmap format to encode inline overlay values separate from direct mapping of target resource to overlay resource. This reduces the number of bytes needed to represent a direct mapping of target resource to overlay resource from 9 bytes to 8 bytes per entry. Fixed all idmap alignment issues that required the framework to use "#pragma pack(push, 1)" when loading idmaps. Bug: 170341022 Test: idmap2_tests and libandroidfw_tests Change-Id: Iab4d3902508f02773464724913e0ee966e3689e4
* Refactor overlayable policyWinson2020-02-261-4/+8
| | | | | | | | | | | | | | | | | | | | To make it easier to add the actor policy in a follow up CL, move most of the policy handling to a central location. The strings and transformation between strings and flags is now handled in libidmap2policies, with libandroidfw containing the single source of policy flags. This also extracts all the test resource IDs into an R.h so they can be swapped without having to edit a dozen files each time. Bug: 130563563 Test: m aapt2_tests idmapt2_tests and run from host test output Test: atest libandroidfw_tests Change-Id: Ie533c9cebf938215df7586f00c38763ae467e606
* Parse <overlay> and abstract resource mappingRyan Mitchell2019-10-041-3/+2
| | | | | | | | | | | | | | | 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
* Run idmap2 static-checks and fix formatting issuesRyan Mitchell2019-04-151-6/+3
| | | | | | Bug: 130324774 Test: builds Change-Id: I2cf9d3aa268ffe38e525fadee9d81fc6aefe19b1
* idmap2: move Idmap.h to ResultMårten Kongstad2019-03-201-9/+7
| | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Change the signatures of Idmap::FromApkAssets and Idmap::FromBinaryStream from std::unique_ptr<const Idmap> func(..., std::ostream& out_error); to Result<std::unique_ptr<const Idmap>> func(...); The returned pointer is still a unique pointer to ensure the dynamically allocated memory is automatically released when no longer used. This means that using the returned value of either function requires one of two patterns: const auto idmap = func(...); if (!idmap) { return Error(...); } (*idmap)->accept(...); or auto result = func(...); if (!result) { return Error(...); } const auto idmap = std::move(*result); idmap->accept(...); Note that in the second example, result must be non-const or the call to std::move(*result) will not compile. With this change, the entire idmap2 project has been converted to use Result. Test: make idmap2_tests Change-Id: I533f4e03b99645523d94dd5f446ad76fb435f661
* Add enforcement of idmap policiesMårten Kongstad2019-01-161-1/+4
| | | | | | | | | | | | | | 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
* idmap2: fix clang-tidy warnings [modernize-*]Mårten Kongstad2018-12-211-4/+2
| | | | | | Bug: 120024673 Test: mmm frameworks/base/cmds/idmap2; check output Change-Id: I8768169fb7b541eb6b1aa3311c46a710eb71aac9
* idmap2: fix clang-tidy warnings [misc-*]Mårten Kongstad2018-12-201-1/+0
| | | | | | Bug: 120024673 Test: mmm frameworks/base/cmds/idmap2; check output Change-Id: I48c1cf25d2f1cf243dca67ec9d7e8fd50e6f9f32
* idmap2: initial code dropMårten Kongstad2018-10-301-0/+83
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
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