| /* |
| * Copyright (C) 2018 The Android Open Source Project |
| * |
| * Licensed under the Apache License, Version 2.0 (the "License"); |
| * you may not use this file except in compliance with the License. |
| * You may obtain a copy of the License at |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| package com.android.server; |
| |
| import android.content.Context; |
| import android.os.Binder; |
| import android.service.runtime.DebugEntryProto; |
| import android.service.runtime.RuntimeServiceInfoProto; |
| import android.util.Slog; |
| import android.util.proto.ProtoOutputStream; |
| |
| import libcore.timezone.TimeZoneDataFiles; |
| import libcore.util.CoreLibraryDebug; |
| import libcore.util.DebugInfo; |
| |
| import com.android.internal.util.DumpUtils; |
| import com.android.timezone.distro.DistroException; |
| import com.android.timezone.distro.DistroVersion; |
| import com.android.timezone.distro.FileUtils; |
| import com.android.timezone.distro.TimeZoneDistro; |
| |
| import java.io.File; |
| import java.io.FileDescriptor; |
| import java.io.IOException; |
| import java.io.PrintWriter; |
| |
| /** |
| * This service exists only as a "dumpsys" target which reports information about the status of the |
| * runtime and related libraries. |
| */ |
| public class RuntimeService extends Binder { |
| |
| private static final String TAG = "RuntimeService"; |
| |
| private final Context mContext; |
| |
| public RuntimeService(Context context) { |
| mContext = context; |
| } |
| |
| @Override |
| protected void dump(FileDescriptor fd, PrintWriter pw, String[] args) { |
| if (!DumpUtils.checkDumpAndUsageStatsPermission(mContext, TAG, pw)) { |
| return; |
| } |
| |
| boolean protoFormat = hasOption(args, "--proto"); |
| ProtoOutputStream proto = null; |
| |
| DebugInfo coreLibraryDebugInfo = CoreLibraryDebug.getDebugInfo(); |
| addTimeZoneApkDebugInfo(coreLibraryDebugInfo); |
| |
| if (protoFormat) { |
| proto = new ProtoOutputStream(fd); |
| reportTimeZoneInfoProto(coreLibraryDebugInfo, proto); |
| } else { |
| reportTimeZoneInfo(coreLibraryDebugInfo, pw); |
| } |
| |
| if (protoFormat) { |
| proto.flush(); |
| } |
| } |
| |
| /** Returns {@code true} if {@code args} contains {@code arg}. */ |
| private static boolean hasOption(String[] args, String arg) { |
| for (String opt : args) { |
| if (arg.equals(opt)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** |
| * Add information to {@link DebugInfo} about the time zone data supplied by the |
| * "Time zone updates via APK" feature. |
| */ |
| private static void addTimeZoneApkDebugInfo(DebugInfo coreLibraryDebugInfo) { |
| // Add /data tz data set using the DistroVersion class (which libcore cannot use). |
| // This update mechanism will be removed after the time zone APEX is launched so this |
| // untidiness will disappear with it. |
| String debugKeyPrefix = "core_library.timezone.source.data_"; |
| String versionFileName = TimeZoneDataFiles.getDataTimeZoneFile( |
| TimeZoneDistro.DISTRO_VERSION_FILE_NAME); |
| addDistroVersionDebugInfo(versionFileName, debugKeyPrefix, coreLibraryDebugInfo); |
| } |
| |
| /** |
| * Prints {@code coreLibraryDebugInfo} to {@code pw}. |
| * |
| * <p>If you change this method, make sure to modify |
| * {@link #reportTimeZoneInfoProto(DebugInfo, ProtoOutputStream)} as well. |
| */ |
| private static void reportTimeZoneInfo(DebugInfo coreLibraryDebugInfo, |
| PrintWriter pw) { |
| pw.println("Core Library Debug Info: "); |
| for (DebugInfo.DebugEntry debugEntry : coreLibraryDebugInfo.getDebugEntries()) { |
| pw.print(debugEntry.getKey()); |
| pw.print(": \""); |
| pw.print(debugEntry.getStringValue()); |
| pw.println("\""); |
| } |
| } |
| |
| /** |
| * Adds {@code coreLibraryDebugInfo} to {@code protoStream}. |
| * |
| * <p>If you change this method, make sure to modify |
| * {@link #reportTimeZoneInfo(DebugInfo, PrintWriter)}. |
| */ |
| private static void reportTimeZoneInfoProto( |
| DebugInfo coreLibraryDebugInfo, ProtoOutputStream protoStream) { |
| for (DebugInfo.DebugEntry debugEntry : coreLibraryDebugInfo.getDebugEntries()) { |
| long entryToken = protoStream.start(RuntimeServiceInfoProto.DEBUG_ENTRY); |
| protoStream.write(DebugEntryProto.KEY, debugEntry.getKey()); |
| protoStream.write(DebugEntryProto.STRING_VALUE, debugEntry.getStringValue()); |
| protoStream.end(entryToken); |
| } |
| } |
| |
| /** |
| * Adds version information to {@code debugInfo} from the distro_version file that may exist |
| * at {@code distroVersionFileName}. If the file does not exist or cannot be read this is |
| * reported as debug information too. |
| */ |
| private static void addDistroVersionDebugInfo(String distroVersionFileName, |
| String debugKeyPrefix, DebugInfo debugInfo) { |
| File file = new File(distroVersionFileName); |
| String statusKey = debugKeyPrefix + "status"; |
| if (file.exists()) { |
| try { |
| byte[] versionBytes = |
| FileUtils.readBytes(file, DistroVersion.DISTRO_VERSION_FILE_LENGTH); |
| DistroVersion distroVersion = DistroVersion.fromBytes(versionBytes); |
| String formatVersionString = distroVersion.formatMajorVersion + "." |
| + distroVersion.formatMinorVersion; |
| debugInfo.addStringEntry(statusKey, "OK") |
| .addStringEntry(debugKeyPrefix + "formatVersion", formatVersionString) |
| .addStringEntry(debugKeyPrefix + "rulesVersion", |
| distroVersion.rulesVersion) |
| .addStringEntry(debugKeyPrefix + "revision", |
| distroVersion.revision); |
| } catch (IOException | DistroException e) { |
| debugInfo.addStringEntry(statusKey, "ERROR"); |
| debugInfo.addStringEntry(debugKeyPrefix + "exception_class", |
| e.getClass().getName()); |
| debugInfo.addStringEntry(debugKeyPrefix + "exception_msg", e.getMessage()); |
| logMessage("Error reading " + file, e); |
| } |
| } else { |
| debugInfo.addStringEntry(statusKey, "NOT_FOUND"); |
| } |
| } |
| |
| private static void logMessage(String msg, Throwable t) { |
| Slog.v(TAG, msg, t); |
| } |
| } |