mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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98 lines
4.8 KiB
Diff
98 lines
4.8 KiB
Diff
From 44cda6f5e47c33e91980ae35c8bc6d88e4d3763c Mon Sep 17 00:00:00 2001
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From: Tad <tad@spotco.us>
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Date: Thu, 24 Nov 2016 13:01:30 -0500
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Subject: [PATCH] Allow packages to spoof their signature
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Change-Id: I9acf48c7607804890d0d0fa7fe30bb36779cb40d
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---
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core/res/AndroidManifest.xml | 7 +++++++
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core/res/res/values/config.xml | 2 ++
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core/res/res/values/strings.xml | 5 +++++
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.../android/server/pm/PackageManagerService.java | 23 ++++++++++++++++++++--
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4 files changed, 35 insertions(+), 2 deletions(-)
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diff --git a/core/res/AndroidManifest.xml b/core/res/AndroidManifest.xml
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index b624305..43eec1f 100644
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--- a/core/res/AndroidManifest.xml
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+++ b/core/res/AndroidManifest.xml
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@@ -1926,6 +1926,13 @@
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android:description="@string/permdesc_getPackageSize"
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android:protectionLevel="normal" />
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+ <!-- @hide Allows an application to change the package signature as
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+ seen by applications -->
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+ <permission android:name="android.permission.FAKE_PACKAGE_SIGNATURE"
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+ android:protectionLevel="dangerous"
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+ android:label="@string/permlab_fakePackageSignature"
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+ android:description="@string/permdesc_fakePackageSignature" />
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+
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<!-- @deprecated No longer useful, see
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{@link android.content.pm.PackageManager#addPackageToPreferred}
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for details. -->
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diff --git a/core/res/res/values/config.xml b/core/res/res/values/config.xml
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index 4a95f6e..702e02a 100644
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--- a/core/res/res/values/config.xml
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+++ b/core/res/res/values/config.xml
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@@ -1383,6 +1383,8 @@
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<string-array name="config_locationProviderPackageNames" translatable="false">
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<!-- The standard AOSP fused location provider -->
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<item>com.android.location.fused</item>
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+ <!-- The (faked) microg fused location provider -->
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+ <item>com.google.android.gms</item>
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</string-array>
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<!-- This string array can be overriden to enable test location providers initially. -->
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diff --git a/core/res/res/values/strings.xml b/core/res/res/values/strings.xml
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index 345d377..26814f1 100644
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--- a/core/res/res/values/strings.xml
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+++ b/core/res/res/values/strings.xml
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@@ -660,6 +660,11 @@
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<!-- Permissions -->
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+ <!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
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+ <string name="permlab_fakePackageSignature">Spoof package signature</string>
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+ <!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
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+ <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. Grant this permission with caution only!</string>
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+
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<!-- Title of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
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<string name="permlab_statusBar">disable or modify status bar</string>
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<!-- Description of an application permission, listed so the user can choose whether they want to allow the application to do this. -->
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diff --git a/services/core/java/com/android/server/pm/PackageManagerService.java b/services/core/java/com/android/server/pm/PackageManagerService.java
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index d450288..9194e69 100644
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--- a/services/core/java/com/android/server/pm/PackageManagerService.java
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+++ b/services/core/java/com/android/server/pm/PackageManagerService.java
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@@ -3141,8 +3141,27 @@ public class PackageManagerService extends IPackageManager.Stub {
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? Collections.<String>emptySet() : permissionsState.getPermissions(userId);
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final PackageUserState state = ps.readUserState(userId);
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- return PackageParser.generatePackageInfo(p, gids, flags,
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- ps.firstInstallTime, ps.lastUpdateTime, permissions, state, userId);
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+ return mayFakeSignature(p, PackageParser.generatePackageInfo(p, gids, flags,
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+ ps.firstInstallTime, ps.lastUpdateTime, permissions, state, userId),
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+ permissions);
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+ }
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+
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+ private PackageInfo mayFakeSignature(PackageParser.Package p, PackageInfo pi,
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+ Set<String> permissions) {
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+ try {
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+ if (permissions.contains("android.permission.FAKE_PACKAGE_SIGNATURE")
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+ && p.applicationInfo.targetSdkVersion > Build.VERSION_CODES.LOLLIPOP_MR1
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+ && p.mAppMetaData != null) {
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+ String sig = p.mAppMetaData.getString("fake-signature");
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+ if (sig != null) {
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+ pi.signatures = new Signature[] {new Signature(sig)};
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+ }
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+ }
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+ } catch (Throwable t) {
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+ // We should never die because of any failures, this is system code!
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+ Log.w("PackageManagerService.FAKE_PACKAGE_SIGNATURE", t);
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+ }
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+ return pi;
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}
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@Override
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--
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2.9.3
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