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Add patch for microG

This commit is contained in:
Peter Cai 2022-08-19 10:20:32 -04:00
parent 4765d3bfd8
commit 60e12d6783
3 changed files with 165 additions and 2 deletions
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2
frameworks/base/0001-PackageParser-support-glob-matching-for-properties.patch
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@ -1,7 +1,7 @@
From 0f7b66cc9930141f645569f354e901bef5ae384b Mon Sep 17 00:00:00 2001
From: Peter Cai <peter@typeblog.net>
Date: Tue, 12 Oct 2021 21:37:22 -0400
Subject: [PATCH 1/2] PackageParser: support glob matching for properties
Subject: [PATCH 1/3] PackageParser: support glob matching for properties
Needed to make phh's vendor overlays work
---

2
frameworks/base/0002-fw-b-Use-ro.build.version.incremental-to-signal-OTA-.patch
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@ -1,7 +1,7 @@
From 381aa92ab038fc6c0157c5b9396218e80ed3ae65 Mon Sep 17 00:00:00 2001
From: dhacker29 <dhackerdvm@gmail.com>
Date: Tue, 24 Nov 2015 01:53:47 -0500
Subject: [PATCH 2/2] fw/b: Use ro.build.version.incremental to signal OTA
Subject: [PATCH 2/3] fw/b: Use ro.build.version.incremental to signal OTA
upgrades
[PeterCxy]: On T, there is a new class PackagePartitions that is

163
frameworks/base/0003-Add-support-for-app-signature-spoofing.patch Normal file
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@ -0,0 +1,163 @@
From effc76211ce9b665c4f9418d86d2b1a8aa67d42b Mon Sep 17 00:00:00 2001
From: Danny Lin <danny@kdrag0n.dev>
Date: Sat, 16 Oct 2021 05:27:57 -0700
Subject: [PATCH 3/3] Add support for app signature spoofing
This is needed by microG GmsCore to pretend to be the official Google
Play Services package, because client apps check the package signature
to make sure it matches Google's official certificate.
This was forward-ported from the Android 10 patch by gudenau:
https://github.com/microg/android_packages_apps_GmsCore/pull/957
Changes made for Android 11:
- Updated PackageInfo calls
- Added new permission to public API surface, needed for
PermissionController which is now an updatable APEX on 11
- Added a dummy permission group to allow users to manage the
permission through the PermissionController UI
(by Vachounet <vachounet@live.fr>)
- Updated location provider comment for conciseness
Changes made for Android 12:
- Moved mayFakeSignature into lock-free Computer subclass
- Always get permissions for packages that request signature spoofing
(otherwise permissions are usually ommitted and thus the permission
check doesn't work properly)
- Optimize mayFakeSignature check order to improve performance
Changes made for Android 13:
- Computer subclass is now an independent class.
Change-Id: Ied7d6ce0b83a2d2345c3abba0429998d86494a88
---
core/api/current.txt | 2 ++
core/res/AndroidManifest.xml | 15 ++++++++++
core/res/res/values/strings.xml | 12 ++++++++
.../com/android/server/pm/ComputerEngine.java | 30 +++++++++++++++++--
4 files changed, 56 insertions(+), 3 deletions(-)
diff --git a/core/api/current.txt b/core/api/current.txt
index c8a43db2f9c2..277183036c60 100644
--- a/core/api/current.txt
+++ b/core/api/current.txt
@@ -87,6 +87,7 @@ package android {
field public static final String DUMP = "android.permission.DUMP";
field public static final String EXPAND_STATUS_BAR = "android.permission.EXPAND_STATUS_BAR";
field public static final String FACTORY_TEST = "android.permission.FACTORY_TEST";
+ field public static final String FAKE_PACKAGE_SIGNATURE = "android.permission.FAKE_PACKAGE_SIGNATURE";
field public static final String FOREGROUND_SERVICE = "android.permission.FOREGROUND_SERVICE";
field public static final String GET_ACCOUNTS = "android.permission.GET_ACCOUNTS";
field public static final String GET_ACCOUNTS_PRIVILEGED = "android.permission.GET_ACCOUNTS_PRIVILEGED";
@@ -222,6 +223,7 @@ package android {
field public static final String CALL_LOG = "android.permission-group.CALL_LOG";
field public static final String CAMERA = "android.permission-group.CAMERA";
field public static final String CONTACTS = "android.permission-group.CONTACTS";
+ field public static final String FAKE_PACKAGE = "android.permission-group.FAKE_PACKAGE";
field public static final String LOCATION = "android.permission-group.LOCATION";
field public static final String MICROPHONE = "android.permission-group.MICROPHONE";
field public static final String NEARBY_DEVICES = "android.permission-group.NEARBY_DEVICES";
diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
index 7439b2f0921f..eadcac3af765 100644
--- a/core/res/AndroidManifest.xml
+++ b/core/res/AndroidManifest.xml
@@ -3534,6 +3534,21 @@
android:description="@string/permdesc_getPackageSize"
android:protectionLevel="normal" />
+ <!-- Dummy user-facing group for faking package signature -->
+ <permission-group android:name="android.permission-group.FAKE_PACKAGE"
+ android:label="@string/permgrouplab_fake_package_signature"
+ android:description="@string/permgroupdesc_fake_package_signature"
+ android:request="@string/permgrouprequest_fake_package_signature"
+ android:priority="100" />
+
+ <!-- Allows an application to change the package signature as
+ seen by applications -->
+ <permission android:name="android.permission.FAKE_PACKAGE_SIGNATURE"
+ android:permissionGroup="android.permission-group.UNDEFINED"
+ android:protectionLevel="signature|privileged"
+ android:label="@string/permlab_fakePackageSignature"
+ android:description="@string/permdesc_fakePackageSignature" />
+
<!-- @deprecated No longer useful, see
{@link android.content.pm.PackageManager#addPackageToPreferred}
for details. -->
diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
index e5d90f00f327..7ac26e536f2a 100644
--- a/core/res/res/values/strings.xml
+++ b/core/res/res/values/strings.xml
@@ -974,6 +974,18 @@
<!-- Permissions -->
+ <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
+ <string name="permlab_fakePackageSignature">Spoof package signature</string>
+ <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
+ <string name="permdesc_fakePackageSignature">Allows the app to pretend to be a different app. Malicious applications might be able to use this to access private application data. Legitimate uses include an emulator pretending to be what it emulates. Grant this permission with caution only!</string>
+ <!-- Title of a category of application permissions, listed so the user can choose whether they want to allow the application to do this. -->
+ <string name="permgrouplab_fake_package_signature">Spoof package signature</string>
+ <!-- Description of a category of application permissions, listed so the user can choose whether they want to allow the application to do this. -->
+ <string name="permgroupdesc_fake_package_signature">allow to spoof package signature</string>
+ <!-- Message shown to the user when the apps requests permission from this group. If ever possible this should stay below 80 characters (assuming the parameters takes 20 characters). Don't abbreviate until the message reaches 120 characters though. [CHAR LIMIT=120] -->
+ <string name="permgrouprequest_fake_package_signature">Allow
+ &lt;b><xliff:g id="app_name" example="Gmail">%1$s</xliff:g>&lt;/b> to spoof package signature?</string>
+
<!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
<string name="permlab_statusBar">disable or modify status bar</string>
<!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
diff --git a/services/core/java/com/android/server/pm/ComputerEngine.java b/services/core/java/com/android/server/pm/ComputerEngine.java
index 259ca655d2b9..674b22e28a83 100644
--- a/services/core/java/com/android/server/pm/ComputerEngine.java
+++ b/services/core/java/com/android/server/pm/ComputerEngine.java
@@ -1591,6 +1591,29 @@ public class ComputerEngine implements Computer {
return result;
}
+ private boolean requestsFakeSignature(AndroidPackage p) {
+ return p.getMetaData() != null &&
+ p.getMetaData().getString("fake-signature") != null;
+ }
+
+ private PackageInfo mayFakeSignature(AndroidPackage p, PackageInfo pi,
+ Set<String> permissions) {
+ try {
+ if (p.getMetaData() != null &&
+ p.getTargetSdkVersion() > Build.VERSION_CODES.LOLLIPOP_MR1) {
+ String sig = p.getMetaData().getString("fake-signature");
+ if (sig != null &&
+ permissions.contains("android.permission.FAKE_PACKAGE_SIGNATURE")) {
+ pi.signatures = new Signature[] {new Signature(sig)};
+ }
+ }
+ } catch (Throwable t) {
+ // We should never die because of any failures, this is system code!
+ Log.w("PackageManagerService.FAKE_PACKAGE_SIGNATURE", t);
+ }
+ return pi;
+ }
+
public final PackageInfo generatePackageInfo(PackageStateInternal ps,
@PackageManager.PackageInfoFlagsBits long flags, int userId) {
if (!mUserManager.exists(userId)) return null;
@@ -1620,13 +1643,14 @@ public class ComputerEngine implements Computer {
final int[] gids = (flags & PackageManager.GET_GIDS) == 0 ? EMPTY_INT_ARRAY
: mPermissionManager.getGidsForUid(UserHandle.getUid(userId, ps.getAppId()));
// Compute granted permissions only if package has requested permissions
- final Set<String> permissions = ((flags & PackageManager.GET_PERMISSIONS) == 0
+ final Set<String> permissions = (((flags & PackageManager.GET_PERMISSIONS) == 0
+ && !requestsFakeSignature(p))
|| ArrayUtils.isEmpty(p.getRequestedPermissions())) ? Collections.emptySet()
: mPermissionManager.getGrantedPermissions(ps.getPackageName(), userId);
- PackageInfo packageInfo = PackageInfoUtils.generate(p, gids, flags,
+ PackageInfo packageInfo = mayFakeSignature(p, PackageInfoUtils.generate(p, gids, flags,
state.getFirstInstallTime(), ps.getLastUpdateTime(), permissions, state, userId,
- ps);
+ ps), permissions);
if (packageInfo == null) {
return null;
--
2.37.2