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Commit 56267f7c authored by Ted Bauer's avatar Ted Bauer
Browse files

Read aconfig flags from protobuf. 

Change-Id: I830376ff93cdb408c7d642dcd6637c4619612a1c
Test: tested manually
Bug: 307551120
parent 9d38af2d

packages/SettingsProvider/Android.bp

+1 −0
Original line number Diff line number Diff line
@@ -33,6 +33,7 @@ android_library { 
    ],

    static_libs: [

        "device_config_service_flags_java",

        "libaconfig_java_proto_lite",

        "SettingsLibDeviceStateRotationLock",

        "SettingsLibDisplayUtils",

    ],

packages/SettingsProvider/src/com/android/providers/settings/DeviceConfigService.java

+49 −52
Original line number Diff line number Diff line
@@ -22,6 +22,8 @@ import static android.provider.Settings.Config.SYNC_DISABLED_MODE_UNTIL_REBOOT; 


import static com.android.providers.settings.Flags.supportOverrides;



import android.aconfig.Aconfig.parsed_flag;

import android.aconfig.Aconfig.parsed_flags;

import android.annotation.SuppressLint;

import android.app.ActivityManager;

import android.content.AttributionSource;
@@ -39,12 +41,13 @@ import android.provider.DeviceConfigShellCommandHandler; 
import android.provider.Settings;

import android.provider.Settings.Config.SyncDisabledMode;

import android.provider.UpdatableDeviceConfigServiceReadiness;

import android.util.Slog;



import com.android.internal.util.FastPrintWriter;



import java.io.File;

import java.io.FileDescriptor;

import java.io.FileNotFoundException;

import java.io.FileInputStream;

import java.io.FileOutputStream;

import java.io.IOException;

import java.io.PrintWriter;
@@ -56,18 +59,17 @@ import java.util.HashMap; 
import java.util.HashSet;

import java.util.List;

import java.util.Map;

import java.util.Scanner;



/**

 * Receives shell commands from the command line related to device config flags, and dispatches them

 * to the SettingsProvider.

 */

public final class DeviceConfigService extends Binder {

    private static final List<String> aconfigTextProtoFilesOnDevice = List.of(

        "/system/etc/aconfig_flags.textproto",

        "/system_ext/etc/aconfig_flags.textproto",

        "/system_ext/etc/aconfig_flags.textproto",

        "/vendor/etc/aconfig_flags.textproto");

    private static final List<String> sAconfigTextProtoFilesOnDevice = List.of(

            "/system/etc/aconfig_flags.pb",

            "/system_ext/etc/aconfig_flags.pb",

            "/system_ext/etc/aconfig_flags.pb",

            "/vendor/etc/aconfig_flags.pb");



    private static final List<String> PRIVATE_NAMESPACES = List.of(

            "device_config_overrides",
@@ -76,6 +78,8 @@ public final class DeviceConfigService extends Binder { 


    final SettingsProvider mProvider;



    private static final String TAG = "DeviceConfigService";



    public DeviceConfigService(SettingsProvider provider) {

        mProvider = provider;

    }
@@ -101,7 +105,7 @@ public final class DeviceConfigService extends Binder { 
        }



        ArrayList<String> missingFiles = new ArrayList<String>();

      for (String fileName : aconfigTextProtoFilesOnDevice) {

        for (String fileName : sAconfigTextProtoFilesOnDevice) {

            File aconfigFile = new File(fileName);

            if (!aconfigFile.exists()) {

                missingFiles.add(fileName);
@@ -123,32 +127,25 @@ public final class DeviceConfigService extends Binder { 


    private static HashSet<String> getAconfigFlagNamesInDeviceConfig() {

        HashSet<String> nameSet = new HashSet<String>();

        for (String fileName : aconfigTextProtoFilesOnDevice) {

        try {

            File aconfigFile = new File(fileName);

            String packageName = "";

            String namespace = "";

            String name = "";



            try (Scanner scanner = new Scanner(aconfigFile)) {

              while (scanner.hasNextLine()) {

                String data = scanner.nextLine().replaceAll("\\s+","");

                if (data.startsWith("package:\"")) {

                  packageName = data.substring(9, data.length()-1);

                } else if (data.startsWith("name:\"")) {

                  name = data.substring(6, data.length()-1);

                } else if (data.startsWith("namespace:\"")) {

                  namespace = data.substring(11, data.length()-1);

                  nameSet.add(namespace + "/" + packageName + "." + name);

                }

              }

            for (String fileName : sAconfigTextProtoFilesOnDevice) {

                byte[] contents = (new FileInputStream(fileName)).readAllBytes();

                parsed_flags parsedFlags = parsed_flags.parseFrom(contents);

                if (parsedFlags == null) {

                    Slog.e(TAG, "failed to parse aconfig protobuf from " + fileName);

                    continue;

                }



          } catch (FileNotFoundException e) {

            continue;

                for (parsed_flag flag : parsedFlags.getParsedFlagList()) {

                    String namespace = flag.getNamespace();

                    String packageName = flag.getPackage();

                    String name = flag.getName();

                    nameSet.add(namespace + "/" + packageName + "." + name);

                }

            }



        } catch (IOException e) {

            Slog.e(TAG, "failed to read aconfig protobuf", e);

        }

        return nameSet;

    }