mirror of
https://github.com/Divested-Mobile/DivestOS-Build.git
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166 lines
7.3 KiB
Diff
166 lines
7.3 KiB
Diff
From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
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From: Dmitry Muhomor <muhomor.dmitry@gmail.com>
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Date: Sun, 31 Jul 2022 18:00:35 +0300
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Subject: [PATCH] improve compatibility of INTERNET special runtime permission
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There are apps that refuse to work when they detect that INTERNET is revoked, usually because of
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a library check that reminds the app developer to add INTERNET uses-permission element to app's
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AndroidManifest.
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Always report that INTERNET is granted unless the app has
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<meta-data android:name="android.permission.INTERNET.mode" android:value="runtime" />
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declaration inside <application> element in its AndroidManifest, or is a system app.
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---
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core/api/system-current.txt | 5 +++++
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core/java/android/app/DownloadManager.java | 13 ++++++++++++
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.../content/pm/AppPermissionUtils.java | 7 +++++++
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.../pm/SpecialRuntimePermAppUtils.java | 20 +++++++++++++++++++
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.../permission/SpecialRuntimePermUtils.java | 17 ++++++++++++++++
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5 files changed, 62 insertions(+)
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diff --git a/core/api/system-current.txt b/core/api/system-current.txt
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index 38e4b74acc38..d7461cbb5be3 100644
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--- a/core/api/system-current.txt
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+++ b/core/api/system-current.txt
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@@ -4176,6 +4176,11 @@ package android.content.pm {
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}
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public class SpecialRuntimePermAppUtils {
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+ method public static boolean awareOfRuntimeInternetPermission();
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+ method public static boolean isInternetCompatEnabled();
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+ method public static boolean requestsInternetPermission();
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+ field public static final int FLAG_AWARE_OF_RUNTIME_INTERNET_PERMISSION = 4; // 0x4
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+ field public static final int FLAG_REQUESTS_INTERNET_PERMISSION = 2; // 0x2
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}
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public final class SuspendDialogInfo implements android.os.Parcelable {
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diff --git a/core/java/android/app/DownloadManager.java b/core/java/android/app/DownloadManager.java
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index de0244f3934f..6285f4745c37 100644
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--- a/core/java/android/app/DownloadManager.java
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+++ b/core/java/android/app/DownloadManager.java
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@@ -34,6 +34,7 @@ import android.content.Context;
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import android.database.Cursor;
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import android.database.CursorWrapper;
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import android.database.DatabaseUtils;
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+import android.database.MatrixCursor;
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import android.net.ConnectivityManager;
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import android.net.NetworkPolicyManager;
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import android.net.Uri;
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@@ -53,6 +54,8 @@ import android.util.LongSparseArray;
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import android.util.Pair;
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import android.webkit.MimeTypeMap;
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+import android.content.pm.SpecialRuntimePermAppUtils;
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+
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import java.io.File;
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import java.io.FileNotFoundException;
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import java.util.ArrayList;
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@@ -1124,6 +1127,11 @@ public class DownloadManager {
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* future calls related to this download. Returns -1 if the operation fails.
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*/
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public long enqueue(Request request) {
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+ if (SpecialRuntimePermAppUtils.isInternetCompatEnabled()) {
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+ // invalid id (DownloadProvider uses SQLite and returns a row id)
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+ return -1;
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+ }
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+
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ContentValues values = request.toContentValues(mPackageName);
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Uri downloadUri = mResolver.insert(Downloads.Impl.CONTENT_URI, values);
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if (downloadUri == null) {
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@@ -1176,6 +1184,11 @@ public class DownloadManager {
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/** @hide */
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public Cursor query(Query query, String[] projection) {
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+ if (SpecialRuntimePermAppUtils.isInternetCompatEnabled()) {
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+ // underlying provider is protected by the INTERNET permission
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+ return new MatrixCursor(projection);
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+ }
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+
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Cursor underlyingCursor = query.runQuery(mResolver, projection, mBaseUri);
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if (underlyingCursor == null) {
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return null;
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diff --git a/core/java/android/content/pm/AppPermissionUtils.java b/core/java/android/content/pm/AppPermissionUtils.java
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index 7dc20eec8485..6a96f70dcfcf 100644
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--- a/core/java/android/content/pm/AppPermissionUtils.java
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+++ b/core/java/android/content/pm/AppPermissionUtils.java
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@@ -24,6 +24,13 @@ public class AppPermissionUtils {
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// android.app.ApplicationPackageManager#checkPermission(String permName, String pkgName)
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// android.app.ContextImpl#checkPermission(String permission, int pid, int uid)
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public static boolean shouldSpoofSelfCheck(String permName) {
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+ if (Manifest.permission.INTERNET.equals(permName)
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+ && SpecialRuntimePermAppUtils.requestsInternetPermission()
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+ && !SpecialRuntimePermAppUtils.awareOfRuntimeInternetPermission())
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+ {
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+ return true;
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+ }
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+
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return false;
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}
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}
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diff --git a/core/java/android/content/pm/SpecialRuntimePermAppUtils.java b/core/java/android/content/pm/SpecialRuntimePermAppUtils.java
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index efd48cb49aa3..2f973a585d5c 100644
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--- a/core/java/android/content/pm/SpecialRuntimePermAppUtils.java
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+++ b/core/java/android/content/pm/SpecialRuntimePermAppUtils.java
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@@ -28,9 +28,29 @@ import android.permission.PermissionManager;
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@SystemApi
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public class SpecialRuntimePermAppUtils {
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private static final int FLAG_INITED = 1;
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+ public static final int FLAG_REQUESTS_INTERNET_PERMISSION = 1 << 1;
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+ public static final int FLAG_AWARE_OF_RUNTIME_INTERNET_PERMISSION = 1 << 2;
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private static volatile int cachedFlags;
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+ private static boolean hasInternetPermission() {
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+ // checkSelfPermission() is spoofed, query the underlying API directly
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+ return PermissionManager.checkPermission(Manifest.permission.INTERNET, Process.myPid(), Process.myUid())
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+ == PackageManager.PERMISSION_GRANTED;
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+ }
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+
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+ public static boolean requestsInternetPermission() {
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+ return (getFlags() & FLAG_REQUESTS_INTERNET_PERMISSION) != 0;
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+ }
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+
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+ public static boolean awareOfRuntimeInternetPermission() {
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+ return (getFlags() & FLAG_AWARE_OF_RUNTIME_INTERNET_PERMISSION) != 0;
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+ }
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+
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+ public static boolean isInternetCompatEnabled() {
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+ return !hasInternetPermission() && requestsInternetPermission() && !awareOfRuntimeInternetPermission();
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+ }
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+
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private static int getFlags() {
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int cache = cachedFlags;
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if (cache != 0) {
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diff --git a/services/core/java/com/android/server/pm/permission/SpecialRuntimePermUtils.java b/services/core/java/com/android/server/pm/permission/SpecialRuntimePermUtils.java
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index fe946ff5d5ca..6f5cabb8a8fc 100644
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--- a/services/core/java/com/android/server/pm/permission/SpecialRuntimePermUtils.java
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+++ b/services/core/java/com/android/server/pm/permission/SpecialRuntimePermUtils.java
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@@ -34,11 +34,28 @@ public class SpecialRuntimePermUtils {
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for (ParsedUsesPermission perm : pkg.getUsesPermissions()) {
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String name = perm.getName();
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switch (name) {
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+ case Manifest.permission.INTERNET:
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+ flags |= FLAG_REQUESTS_INTERNET_PERMISSION;
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+ continue;
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default:
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continue;
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}
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}
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+ if ((flags & FLAG_REQUESTS_INTERNET_PERMISSION) != 0) {
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+ if (pkg.isSystem()) {
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+ flags |= FLAG_AWARE_OF_RUNTIME_INTERNET_PERMISSION;
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+ } else {
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+ Bundle metadata = pkg.getMetaData();
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+ if (metadata != null) {
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+ String key = Manifest.permission.INTERNET + ".mode";
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+ if ("runtime".equals(metadata.getString(key))) {
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+ flags |= FLAG_AWARE_OF_RUNTIME_INTERNET_PERMISSION;
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+ }
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+ }
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+ }
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+ }
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+
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return flags;
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}
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