Remove support: libfeature_support_angle.so

Remove support for ANGLE's libfeature_support_angle.so.

This also removes all of the logic related to checking the rules file,
since libfeature_support_angle.so is what parsed the JSON rules file.

Bug: b/187342779
Bug: b/184757175
Test: make and manual verification ANGLE is loaded
Change-Id: I02ac083fb8144465b60ac0ed2738c73b31addda1
Merged-In: I02ac083fb8144465b60ac0ed2738c73b31addda1

6 files changed, 11 insertions, 166 deletions

diff --git a/core/java/android/os/GraphicsEnvironment.java b/core/java/android/os/GraphicsEnvironment.java
index be21fea1d0df..1651bfc2db5d 100644
--- a/core/java/android/os/GraphicsEnvironment.java
+++ b/core/java/android/os/GraphicsEnvironment.java
@@ -26,8 +26,6 @@ import android.content.pm.IPackageManager;
 import android.content.pm.PackageInfo;
 import android.content.pm.PackageManager;
 import android.content.pm.ResolveInfo;
-import android.content.res.AssetFileDescriptor;
-import android.content.res.AssetManager;
 import android.provider.Settings;
 import android.text.TextUtils;
 import android.util.Log;
@@ -37,9 +35,6 @@ import dalvik.system.VMRuntime;
 
 import java.io.BufferedReader;
 import java.io.File;
-import java.io.FileDescriptor;
-import java.io.FileInputStream;
-import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.util.ArrayList;
@@ -88,9 +83,6 @@ public class GraphicsEnvironment {
     private static final String UPDATABLE_DRIVER_ALLOWLIST_ALL = "*";
     private static final String UPDATABLE_DRIVER_SPHAL_LIBRARIES_FILENAME = "sphal_libraries.txt";
 
-    // ANGLE related properties.
-    private static final String ANGLE_RULES_FILE = "a4a_rules.json";
-    private static final String ANGLE_TEMP_RULES = "debug.angle.rules";
     private static final String ACTION_ANGLE_FOR_ANDROID = "android.app.action.ANGLE_FOR_ANDROID";
     private static final String ACTION_ANGLE_FOR_ANDROID_TOAST_MESSAGE =
             "android.app.action.ANGLE_FOR_ANDROID_TOAST_MESSAGE";
@@ -164,21 +156,14 @@ public class GraphicsEnvironment {
         Log.v(TAG, "ANGLE Developer option for '" + packageName + "' "
                 + "set to: '" + devOptIn + "'");
 
-        // We only want to use ANGLE if the app is in the allowlist, or the developer has
-        // explicitly chosen something other than default driver.
-        // The allowlist will be generated by the ANGLE APK at both boot time and
-        // ANGLE update time. It will only include apps mentioned in the rules file.
-        final boolean allowed = checkAngleAllowlist(context, coreSettings, packageName);
+        // We only want to use ANGLE if the developer has explicitly chosen something other than
+        // default driver.
         final boolean requested = devOptIn.equals(ANGLE_GL_DRIVER_CHOICE_ANGLE);
-
-        if (allowed) {
-            Log.v(TAG, "ANGLE allowlist includes " + packageName);
-        }
         if (requested) {
             Log.v(TAG, "ANGLE developer option for " + packageName + ": " + devOptIn);
         }
 
-        return allowed || requested;
+        return requested;
     }
 
     private int getVulkanVersion(PackageManager pm) {
@@ -475,117 +460,6 @@ public class GraphicsEnvironment {
     }
 
     /**
-     * Attempt to setup ANGLE with a temporary rules file.
-     * True: Temporary rules file was loaded.
-     * False: Temporary rules file was *not* loaded.
-     */
-    private boolean setupAngleWithTempRulesFile(Context context,
-                                                String packageName,
-                                                String paths,
-                                                String devOptIn) {
-        /**
-         * We only want to load a temp rules file for:
-         *  - apps that are marked 'debuggable' in their manifest
-         *  - devices that are running a userdebug build (ro.debuggable) or can inject libraries for
-         *    debugging (PR_SET_DUMPABLE).
-         */
-        if (!isDebuggable()) {
-            Log.v(TAG, "Skipping loading temporary rules file");
-            return false;
-        }
-
-        final String angleTempRules = SystemProperties.get(ANGLE_TEMP_RULES);
-
-        if (TextUtils.isEmpty(angleTempRules)) {
-            Log.v(TAG, "System property '" + ANGLE_TEMP_RULES + "' is not set or is empty");
-            return false;
-        }
-
-        Log.i(TAG, "Detected system property " + ANGLE_TEMP_RULES + ": " + angleTempRules);
-
-        final File tempRulesFile = new File(angleTempRules);
-        if (tempRulesFile.exists()) {
-            Log.i(TAG, angleTempRules + " exists, loading file.");
-            try {
-                final FileInputStream stream = new FileInputStream(angleTempRules);
-
-                try {
-                    final FileDescriptor rulesFd = stream.getFD();
-                    final long rulesOffset = 0;
-                    final long rulesLength = stream.getChannel().size();
-                    Log.i(TAG, "Loaded temporary ANGLE rules from " + angleTempRules);
-
-                    setAngleInfo(paths, packageName, devOptIn, null,
-                            rulesFd, rulesOffset, rulesLength);
-
-                    stream.close();
-
-                    // We successfully setup ANGLE, so return with good status
-                    return true;
-                } catch (IOException e) {
-                    Log.w(TAG, "Hit IOException thrown by FileInputStream: " + e);
-                }
-            } catch (FileNotFoundException e) {
-                Log.w(TAG, "Temp ANGLE rules file not found: " + e);
-            } catch (SecurityException e) {
-                Log.w(TAG, "Temp ANGLE rules file not accessible: " + e);
-            }
-        }
-
-        return false;
-    }
-
-    /**
-     * Attempt to setup ANGLE with a rules file loaded from the ANGLE APK.
-     * True: APK rules file was loaded.
-     * False: APK rules file was *not* loaded.
-     */
-    private boolean setupAngleRulesApk(String anglePkgName,
-            ApplicationInfo angleInfo,
-            PackageManager pm,
-            String packageName,
-            String paths,
-            String devOptIn,
-            String[] features) {
-        // Pass the rules file to loader for ANGLE decisions
-        try {
-            final AssetManager angleAssets = pm.getResourcesForApplication(angleInfo).getAssets();
-
-            try {
-                final AssetFileDescriptor assetsFd = angleAssets.openFd(ANGLE_RULES_FILE);
-
-                setAngleInfo(paths, packageName, devOptIn, features, assetsFd.getFileDescriptor(),
-                        assetsFd.getStartOffset(), assetsFd.getLength());
-
-                assetsFd.close();
-
-                return true;
-            } catch (IOException e) {
-                Log.w(TAG, "Failed to get AssetFileDescriptor for " + ANGLE_RULES_FILE
-                        + " from '" + anglePkgName + "': " + e);
-            }
-        } catch (PackageManager.NameNotFoundException e) {
-            Log.w(TAG, "Failed to get AssetManager for '" + anglePkgName + "': " + e);
-        }
-
-        return false;
-    }
-
-    /**
-     * Pull ANGLE allowlist from GlobalSettings and compare against current package
-     */
-    private boolean checkAngleAllowlist(Context context, Bundle bundle, String packageName) {
-        final ContentResolver contentResolver = context.getContentResolver();
-        final List<String> angleAllowlist =
-                getGlobalSettingsString(contentResolver, bundle,
-                    Settings.Global.ANGLE_ALLOWLIST);
-
-        if (DEBUG) Log.v(TAG, "ANGLE allowlist: " + angleAllowlist);
-
-        return angleAllowlist.contains(packageName);
-    }
-
-    /**
      * Pass ANGLE details down to trigger enable logic
      *
      * @param context
@@ -648,27 +522,16 @@ public class GraphicsEnvironment {
         if (DEBUG) Log.v(TAG, "ANGLE package libs: " + paths);
 
         // If the user has set the developer option to something other than default,
-        // we need to call setupAngleRulesApk() with the package name and the developer
+        // we need to call setAngleInfo() with the package name and the developer
         // option value (native/angle/other). Then later when we are actually trying to
         // load a driver, GraphicsEnv::getShouldUseAngle() has seen the package name before
         // and can confidently answer yes/no based on the previously set developer
         // option value.
         final String devOptIn = getDriverForPackage(context, bundle, packageName);
+        final String[] features = getAngleEglFeatures(context, bundle);
 
-        if (setupAngleWithTempRulesFile(context, packageName, paths, devOptIn)) {
-            // We setup ANGLE with a temp rules file, so we're done here.
-            return true;
-        }
-
-        String[] features = getAngleEglFeatures(context, bundle);
-
-        if (setupAngleRulesApk(
-                anglePkgName, angleInfo, pm, packageName, paths, devOptIn, features)) {
-            // ANGLE with rules is set up from the APK, hence return.
-            return true;
-        }
-
-        return false;
+        setAngleInfo(paths, packageName, devOptIn, features);
+        return true;
     }
 
     /**
@@ -956,7 +819,7 @@ public class GraphicsEnvironment {
     private static native void setGpuStats(String driverPackageName, String driverVersionName,
             long driverVersionCode, long driverBuildTime, String appPackageName, int vulkanVersion);
     private static native void setAngleInfo(String path, String appPackage, String devOptIn,
-            String[] features, FileDescriptor rulesFd, long rulesOffset, long rulesLength);
+            String[] features);
     private static native boolean getShouldUseAngle(String packageName);
     private static native boolean setInjectLayersPrSetDumpable();
 
diff --git a/core/java/android/provider/Settings.java b/core/java/android/provider/Settings.java
index 70eab2264954..18e9e01bcf67 100644
--- a/core/java/android/provider/Settings.java
+++ b/core/java/android/provider/Settings.java
@@ -13670,13 +13670,6 @@ public final class Settings {
                 "angle_gl_driver_selection_values";
 
         /**
-         * List of package names that should check ANGLE rules
-         * @hide
-         */
-        @Readable
-        public static final String ANGLE_ALLOWLIST = "angle_allowlist";
-
-        /**
          * Lists of ANGLE EGL features for debugging.
          * Each list of features is separated by a comma, each feature in each list is separated by
          * a colon.
diff --git a/core/jni/android_os_GraphicsEnvironment.cpp b/core/jni/android_os_GraphicsEnvironment.cpp
index b40491a49b14..f44e829d49d7 100644
--- a/core/jni/android_os_GraphicsEnvironment.cpp
+++ b/core/jni/android_os_GraphicsEnvironment.cpp
@@ -50,8 +50,7 @@ void setGpuStats_native(JNIEnv* env, jobject clazz, jstring driverPackageName,
 }
 
 void setAngleInfo_native(JNIEnv* env, jobject clazz, jstring path, jstring appName,
-                         jstring devOptIn, jobjectArray featuresObj, jobject rulesFd,
-                         jlong rulesOffset, jlong rulesLength) {
+                         jstring devOptIn, jobjectArray featuresObj) {
     ScopedUtfChars pathChars(env, path);
     ScopedUtfChars appNameChars(env, appName);
     ScopedUtfChars devOptInChars(env, devOptIn);
@@ -74,11 +73,8 @@ void setAngleInfo_native(JNIEnv* env, jobject clazz, jstring path, jstring appNa
         }
     }
 
-    int rulesFd_native = jniGetFDFromFileDescriptor(env, rulesFd);
-
     android::GraphicsEnv::getInstance().setAngleInfo(pathChars.c_str(), appNameChars.c_str(),
-                                                     devOptInChars.c_str(), features,
-                                                     rulesFd_native, rulesOffset, rulesLength);
+                                                     devOptInChars.c_str(), features);
 }
 
 bool shouldUseAngle_native(JNIEnv* env, jobject clazz, jstring appName) {
@@ -124,8 +120,7 @@ const JNINativeMethod g_methods[] = {
         {"setInjectLayersPrSetDumpable", "()Z",
          reinterpret_cast<void*>(setInjectLayersPrSetDumpable_native)},
         {"setAngleInfo",
-         "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;Ljava/io/"
-         "FileDescriptor;JJ)V",
+         "(Ljava/lang/String;Ljava/lang/String;Ljava/lang/String;[Ljava/lang/String;)V",
          reinterpret_cast<void*>(setAngleInfo_native)},
         {"getShouldUseAngle", "(Ljava/lang/String;)Z",
          reinterpret_cast<void*>(shouldUseAngle_native)},
diff --git a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProtoDumpUtil.java b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProtoDumpUtil.java
index 90cec3fb6913..20735cba44a3 100644
--- a/packages/SettingsProvider/src/com/android/providers/settings/SettingsProtoDumpUtil.java
+++ b/packages/SettingsProvider/src/com/android/providers/settings/SettingsProtoDumpUtil.java
@@ -763,9 +763,6 @@ class SettingsProtoDumpUtil {
                 Settings.Global.ANGLE_GL_DRIVER_SELECTION_VALUES,
                 GlobalSettingsProto.Gpu.ANGLE_GL_DRIVER_SELECTION_VALUES);
         dumpSetting(s, p,
-                Settings.Global.ANGLE_ALLOWLIST,
-                GlobalSettingsProto.Gpu.ANGLE_ALLOWLIST);
-        dumpSetting(s, p,
                 Settings.Global.ANGLE_EGL_FEATURES,
                 GlobalSettingsProto.Gpu.ANGLE_EGL_FEATURES);
         dumpSetting(s, p,
diff --git a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
index 3297937e3e75..cd34924ddb46 100644
--- a/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
+++ b/packages/SettingsProvider/test/src/android/provider/SettingsBackupTest.java
@@ -509,7 +509,6 @@ public class SettingsBackupTest {
                     Settings.Global.ANGLE_GL_DRIVER_ALL_ANGLE,
                     Settings.Global.ANGLE_GL_DRIVER_SELECTION_PKGS,
                     Settings.Global.ANGLE_GL_DRIVER_SELECTION_VALUES,
-                    Settings.Global.ANGLE_ALLOWLIST,
                     Settings.Global.ANGLE_EGL_FEATURES,
                     Settings.Global.UPDATABLE_DRIVER_ALL_APPS,
                     Settings.Global.UPDATABLE_DRIVER_PRODUCTION_OPT_IN_APPS,
diff --git a/services/core/java/com/android/server/am/CoreSettingsObserver.java b/services/core/java/com/android/server/am/CoreSettingsObserver.java
index 5c9d38515e49..2e3e635c1157 100644
--- a/services/core/java/com/android/server/am/CoreSettingsObserver.java
+++ b/services/core/java/com/android/server/am/CoreSettingsObserver.java
@@ -94,8 +94,6 @@ final class CoreSettingsObserver extends ContentObserver {
         sGlobalSettingToTypeMap.put(
                 Settings.Global.ANGLE_GL_DRIVER_SELECTION_VALUES, String.class);
         sGlobalSettingToTypeMap.put(
-                Settings.Global.ANGLE_ALLOWLIST, String.class);
-        sGlobalSettingToTypeMap.put(
                 Settings.Global.ANGLE_EGL_FEATURES, String.class);
         sGlobalSettingToTypeMap.put(
                 Settings.Global.SHOW_ANGLE_IN_USE_DIALOG_BOX, String.class);