diff options
Diffstat (limited to 'services/appwidget/java/com/android')
| -rw-r--r-- | services/appwidget/java/com/android/server/appwidget/AppWidgetService.java | 63 | ||||
| -rw-r--r-- | services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java | 741 |
2 files changed, 759 insertions, 45 deletions
diff --git a/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java b/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java index e208677..77d5076 100644 --- a/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java +++ b/services/appwidget/java/com/android/server/appwidget/AppWidgetService.java @@ -23,7 +23,6 @@ import android.content.ComponentName; import android.content.Context; import android.content.Intent; import android.content.IntentFilter; -import android.content.pm.PackageManager; import android.os.Binder; import android.os.Bundle; import android.os.Handler; @@ -38,18 +37,19 @@ import com.android.internal.appwidget.IAppWidgetHost; import com.android.internal.appwidget.IAppWidgetService; import com.android.internal.os.BackgroundThread; import com.android.internal.util.IndentingPrintWriter; +import com.android.server.AppWidgetBackupBridge; +import com.android.server.WidgetBackupProvider; import com.android.server.SystemService; import java.io.FileDescriptor; import java.io.PrintWriter; import java.util.List; -import java.util.Locale; /** * SystemService that publishes an IAppWidgetService. */ -public class AppWidgetService extends SystemService { +public class AppWidgetService extends SystemService implements WidgetBackupProvider { static final String TAG = "AppWidgetService"; @@ -72,6 +72,7 @@ public class AppWidgetService extends SystemService { @Override public void onStart() { publishBinderService(Context.APPWIDGET_SERVICE, mServiceImpl); + AppWidgetBackupBridge.register(this); } @Override @@ -81,13 +82,40 @@ public class AppWidgetService extends SystemService { } } + + // backup <-> app widget service bridge surface + @Override + public List<String> getWidgetParticipants(int userId) { + return mServiceImpl.getWidgetParticipants(userId); + } + + @Override + public byte[] getWidgetState(String packageName, int userId) { + return mServiceImpl.getWidgetState(packageName, userId); + } + + @Override + public void restoreStarting(int userId) { + mServiceImpl.restoreStarting(userId); + } + + @Override + public void restoreWidgetState(String packageName, byte[] restoredState, int userId) { + mServiceImpl.restoreWidgetState(packageName, restoredState, userId); + } + + @Override + public void restoreFinished(int userId) { + mServiceImpl.restoreFinished(userId); + } + + + // implementation entry point and binder service private final AppWidgetServiceStub mServiceImpl = new AppWidgetServiceStub(); - private class AppWidgetServiceStub extends IAppWidgetService.Stub { + class AppWidgetServiceStub extends IAppWidgetService.Stub { private boolean mSafeMode; - private Locale mLocale; - private PackageManager mPackageManager; public void systemRunning(boolean safeMode) { mSafeMode = safeMode; @@ -227,6 +255,29 @@ public class AppWidgetService extends SystemService { } } + + // support of the widget/backup bridge + public List<String> getWidgetParticipants(int userId) { + return getImplForUser(userId).getWidgetParticipants(); + } + + public byte[] getWidgetState(String packageName, int userId) { + return getImplForUser(userId).getWidgetState(packageName); + } + + public void restoreStarting(int userId) { + getImplForUser(userId).restoreStarting(); + } + + public void restoreWidgetState(String packageName, byte[] restoredState, int userId) { + getImplForUser(userId).restoreWidgetState(packageName, restoredState); + } + + public void restoreFinished(int userId) { + getImplForUser(userId).restoreFinished(); + } + + private void checkPermission(int userId) { int realUserId = ActivityManager.handleIncomingUser( Binder.getCallingPid(), diff --git a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java index b6391b6..b84df79 100644 --- a/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java +++ b/services/appwidget/java/com/android/server/appwidget/AppWidgetServiceImpl.java @@ -31,6 +31,7 @@ import android.content.pm.ApplicationInfo; import android.content.pm.IPackageManager; import android.content.pm.PackageInfo; import android.content.pm.PackageManager; +import android.content.pm.PackageManager.NameNotFoundException; import android.content.pm.ResolveInfo; import android.content.pm.ServiceInfo; import android.content.res.Resources; @@ -51,6 +52,7 @@ import android.util.AtomicFile; import android.util.AttributeSet; import android.util.Pair; import android.util.Slog; +import android.util.SparseArray; import android.util.TypedValue; import android.util.Xml; import android.view.Display; @@ -66,6 +68,8 @@ import org.xmlpull.v1.XmlPullParser; import org.xmlpull.v1.XmlPullParserException; import org.xmlpull.v1.XmlSerializer; +import java.io.ByteArrayInputStream; +import java.io.ByteArrayOutputStream; import java.io.File; import java.io.FileDescriptor; import java.io.FileInputStream; @@ -79,8 +83,11 @@ import java.util.HashSet; import java.util.Iterator; import java.util.List; import java.util.Locale; +import java.util.Map.Entry; import java.util.Set; +import libcore.util.MutableInt; + class AppWidgetServiceImpl { private static final String KEYGUARD_HOST_PACKAGE = "com.android.keyguard"; @@ -89,8 +96,10 @@ class AppWidgetServiceImpl { private static final String SETTINGS_FILENAME = "appwidgets.xml"; private static final int MIN_UPDATE_PERIOD = 30 * 60 * 1000; // 30 minutes private static final int CURRENT_VERSION = 1; // Bump if the stored widgets need to be upgraded. + private static final int WIDGET_STATE_VERSION = 1; // version of backed-up widget state - private static boolean DBG = false; + private static boolean DBG = true; + private static boolean DEBUG_BACKUP = DBG || true; /* * When identifying a Host or Provider based on the calling process, use the uid field. When @@ -105,6 +114,25 @@ class AppWidgetServiceImpl { boolean zombie; // if we're in safe mode, don't prune this just because nobody references it int tag; // for use while saving state (the index) + + // is there an instance of this provider hosted by the given app? + public boolean isHostedBy(String packageName) { + final int N = instances.size(); + for (int i = 0; i < N; i++) { + AppWidgetId id = instances.get(i); + if (packageName.equals(id.host.packageName)) { + return true; + } + } + return false; + } + + @Override + public String toString() { + return "Provider{" + ((info == null) ? "null" : info.provider) + + (zombie ? " Z" : "") + + '}'; + } } static class Host { @@ -125,14 +153,62 @@ class AppWidgetServiceImpl { return this.uid == callingUid; } } + + boolean hostsPackage(String pkg) { + final int N = instances.size(); + for (int i = 0; i < N; i++) { + Provider p = instances.get(i).provider; + if (p.info != null && pkg.equals(p.info.provider.getPackageName())) { + return true; + } + } + return false; + } + + @Override + public String toString() { + return "Host{" + packageName + ":" + hostId + '}'; + } } static class AppWidgetId { int appWidgetId; + int restoredId; // tracking & remapping any restored state Provider provider; RemoteViews views; Bundle options; Host host; + + @Override + public String toString() { + return "AppWidgetId{" + appWidgetId + ':' + host + ':' + provider + '}'; + } + } + + AppWidgetId findRestoredWidgetLocked(int restoredId, Host host, Provider p) { + if (DEBUG_BACKUP) { + Slog.i(TAG, "Find restored widget: id=" + restoredId + + " host=" + host + " provider=" + p); + } + + if (p == null || host == null) { + return null; + } + + final int N = mAppWidgetIds.size(); + for (int i = 0; i < N; i++) { + AppWidgetId widget = mAppWidgetIds.get(i); + if (widget.restoredId == restoredId + && widget.host.hostId == host.hostId + && widget.host.packageName.equals(host.packageName) + && widget.provider.info.provider.equals(p.info.provider)) { + if (DEBUG_BACKUP) { + Slog.i(TAG, " Found at " + i + " : " + widget); + } + return widget; + } + } + return null; } /** @@ -194,6 +270,22 @@ class AppWidgetServiceImpl { boolean mStateLoaded; int mMaxWidgetBitmapMemory; + // Map old (restored) widget IDs to new AppWidgetId instances. This object is used + // as the lock around manipulation of the overall restored-widget state, just as + // mAppWidgetIds is used as the lock object around all "live" widget state + // manipulations. Methods that must be called with this lock held are decorated + // with the suffix "Lr". + // + // In cases when both of those locks must be held concurrently, mRestoredWidgetIds + // must be acquired *first.* + private final SparseArray<AppWidgetId> mRestoredWidgetIds = new SparseArray<AppWidgetId>(); + + // We need to make sure to wipe the pre-restore widget state only once for + // a given package. Keep track of what we've done so far here; the list is + // cleared at the start of every system restore pass, but preserved through + // any install-time restore operations. + HashSet<String> mPrunedApps = new HashSet<String>(); + private final Handler mSaveStateHandler; // These are for debugging only -- widgets are going missing in some rare instances @@ -300,10 +392,19 @@ class AppWidgetServiceImpl { providersModified |= updateProvidersForPackageLocked(pkgName, null); } } else { - // The package was just added + // The package was just added. Fix up the providers... for (String pkgName : pkgList) { providersModified |= addProvidersForPackageLocked(pkgName); } + // ...and see if these are hosts we've been awaiting + for (String pkg : pkgList) { + try { + int uid = getUidForPackage(pkg); + resolveHostUidLocked(pkg, uid); + } catch (NameNotFoundException e) { + // shouldn't happen; we just installed it! + } + } } saveStateAsync(); } @@ -331,6 +432,19 @@ class AppWidgetServiceImpl { } } + void resolveHostUidLocked(String pkg, int uid) { + final int N = mHosts.size(); + for (int i = 0; i < N; i++) { + Host h = mHosts.get(i); + if (h.uid == -1 && pkg.equals(h.packageName)) { + if (DEBUG_BACKUP) { + Slog.i(TAG, "host " + pkg + ":" + h.hostId + " resolved to uid " + uid); + } + h.uid = uid; + } + } + } + private void dumpProvider(Provider p, int index, PrintWriter pw) { AppWidgetProviderInfo info = p.info; pw.print(" ["); pw.print(index); pw.print("] provider "); @@ -433,7 +547,7 @@ class AppWidgetServiceImpl { if (!mHasFeature) { return; } - loadAppWidgetListLocked(); + loadWidgetProviderListLocked(); loadStateLocked(); mStateLoaded = true; } @@ -516,6 +630,7 @@ class AppWidgetServiceImpl { } void deleteHostLocked(Host host) { + if (DBG) log("Deleting host " + host); final int N = host.instances.size(); for (int i = N - 1; i >= 0; i--) { AppWidgetId id = host.instances.get(i); @@ -719,7 +834,7 @@ class AppWidgetServiceImpl { } final ComponentName componentName = intent.getComponent(); try { - final ServiceInfo si = AppGlobals.getPackageManager().getServiceInfo(componentName, + final ServiceInfo si = mPm.getServiceInfo(componentName, PackageManager.GET_PERMISSIONS, mUserId); if (!android.Manifest.permission.BIND_REMOTEVIEWS.equals(si.permission)) { throw new SecurityException("Selected service does not require " @@ -981,7 +1096,6 @@ class AppWidgetServiceImpl { if (!mHasFeature) { return; } - options = cloneIfLocalBinder(options); ensureStateLoadedLocked(); AppWidgetId id = lookupAppWidgetIdLocked(appWidgetId); @@ -991,7 +1105,7 @@ class AppWidgetServiceImpl { Provider p = id.provider; // Merge the options - id.options.putAll(options); + id.options.putAll(cloneIfLocalBinder(options)); // send the broacast saying that this appWidgetId has been deleted Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_OPTIONS_CHANGED); @@ -1278,9 +1392,13 @@ class AppWidgetServiceImpl { } Provider lookupProviderLocked(ComponentName provider) { - final int N = mInstalledProviders.size(); + return lookupProviderLocked(provider, mInstalledProviders); + } + + Provider lookupProviderLocked(ComponentName provider, ArrayList<Provider> installedProviders) { + final int N = installedProviders.size(); for (int i = 0; i < N; i++) { - Provider p = mInstalledProviders.get(i); + Provider p = installedProviders.get(i); if (p.info.provider.equals(provider)) { return p; } @@ -1317,11 +1435,12 @@ class AppWidgetServiceImpl { void pruneHostLocked(Host host) { if (host.instances.size() == 0 && host.callbacks == null) { + if (DBG) log("Pruning host " + host); mHosts.remove(host); } } - void loadAppWidgetListLocked() { + void loadWidgetProviderListLocked() { Intent intent = new Intent(AppWidgetManager.ACTION_APPWIDGET_UPDATE); try { List<ResolveInfo> broadcastReceivers = mPm.queryIntentReceivers(intent, @@ -1348,7 +1467,23 @@ class AppWidgetServiceImpl { Provider p = parseProviderInfoXml(new ComponentName(ri.activityInfo.packageName, ri.activityInfo.name), ri); if (p != null) { - mInstalledProviders.add(p); + // we might have an inactive entry for this provider already due to + // a preceding restore operation. if so, fix it up in place; otherwise + // just add this new one. + Provider existing = lookupProviderLocked(p.info.provider); + if (existing != null) { + if (existing.zombie && !mSafeMode) { + // it's a placeholder that was set up during an app restore + existing.zombie = false; + existing.info = p.info; // the real one filled out from the ResolveInfo + existing.uid = p.uid; + if (DEBUG_BACKUP) { + Slog.i(TAG, "Provider placeholder now reified: " + existing); + } + } + } else { + mInstalledProviders.add(p); + } return true; } else { return false; @@ -1463,6 +1598,554 @@ class AppWidgetServiceImpl { } } + public List<String> getWidgetParticipants() { + HashSet<String> packages = new HashSet<String>(); + synchronized (mAppWidgetIds) { + final int N = mAppWidgetIds.size(); + for (int i = 0; i < N; i++) { + final AppWidgetId id = mAppWidgetIds.get(i); + packages.add(id.host.packageName); + packages.add(id.provider.info.provider.getPackageName()); + } + } + return new ArrayList<String>(packages); + } + + private void serializeProvider(XmlSerializer out, Provider p) throws IOException { + out.startTag(null, "p"); + out.attribute(null, "pkg", p.info.provider.getPackageName()); + out.attribute(null, "cl", p.info.provider.getClassName()); + out.endTag(null, "p"); + } + + private void serializeHost(XmlSerializer out, Host host) throws IOException { + out.startTag(null, "h"); + out.attribute(null, "pkg", host.packageName); + out.attribute(null, "id", Integer.toHexString(host.hostId)); + out.endTag(null, "h"); + } + + private void serializeAppWidgetId(XmlSerializer out, AppWidgetId id) throws IOException { + out.startTag(null, "g"); + out.attribute(null, "id", Integer.toHexString(id.appWidgetId)); + out.attribute(null, "rid", Integer.toHexString(id.restoredId)); + out.attribute(null, "h", Integer.toHexString(id.host.tag)); + if (id.provider != null) { + out.attribute(null, "p", Integer.toHexString(id.provider.tag)); + } + if (id.options != null) { + out.attribute(null, "min_width", Integer.toHexString(id.options.getInt( + AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH))); + out.attribute(null, "min_height", Integer.toHexString(id.options.getInt( + AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT))); + out.attribute(null, "max_width", Integer.toHexString(id.options.getInt( + AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH))); + out.attribute(null, "max_height", Integer.toHexString(id.options.getInt( + AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT))); + out.attribute(null, "host_category", Integer.toHexString(id.options.getInt( + AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY))); + } + out.endTag(null, "g"); + } + + private Bundle parseWidgetIdOptions(XmlPullParser parser) { + Bundle options = new Bundle(); + String minWidthString = parser.getAttributeValue(null, "min_width"); + if (minWidthString != null) { + options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH, + Integer.parseInt(minWidthString, 16)); + } + String minHeightString = parser.getAttributeValue(null, "min_height"); + if (minHeightString != null) { + options.putInt(AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT, + Integer.parseInt(minHeightString, 16)); + } + String maxWidthString = parser.getAttributeValue(null, "max_width"); + if (maxWidthString != null) { + options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH, + Integer.parseInt(maxWidthString, 16)); + } + String maxHeightString = parser.getAttributeValue(null, "max_height"); + if (maxHeightString != null) { + options.putInt(AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT, + Integer.parseInt(maxHeightString, 16)); + } + String categoryString = parser.getAttributeValue(null, "host_category"); + if (categoryString != null) { + options.putInt(AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY, + Integer.parseInt(categoryString, 16)); + } + return options; + } + + // Does this package either host or provide any active widgets? + private boolean packageNeedsWidgetBackupLocked(String packageName) { + int N = mAppWidgetIds.size(); + for (int i = 0; i < N; i++) { + AppWidgetId id = mAppWidgetIds.get(i); + if (packageName.equals(id.host.packageName)) { + // this package is hosting widgets, so it knows widget IDs + return true; + } + Provider p = id.provider; + if (p != null && packageName.equals(p.info.provider.getPackageName())) { + // someone is hosting this app's widgets, so it knows widget IDs + return true; + } + } + return false; + } + + // build the widget-state blob that we save for the app during backup. + public byte[] getWidgetState(String backupTarget) { + if (!mHasFeature) { + return null; + } + + ByteArrayOutputStream stream = new ByteArrayOutputStream(); + synchronized (mAppWidgetIds) { + // Preflight: if this app neither hosts nor provides any live widgets + // we have no work to do. + if (!packageNeedsWidgetBackupLocked(backupTarget)) { + return null; + } + + try { + XmlSerializer out = new FastXmlSerializer(); + out.setOutput(stream, "utf-8"); + out.startDocument(null, true); + out.startTag(null, "ws"); // widget state + out.attribute(null, "version", String.valueOf(WIDGET_STATE_VERSION)); + out.attribute(null, "pkg", backupTarget); + + // Remember all the providers that are currently hosted or published + // by this package: that is, all of the entities related to this app + // which will need to be told about id remapping. + int N = mInstalledProviders.size(); + int index = 0; + for (int i = 0; i < N; i++) { + Provider p = mInstalledProviders.get(i); + if (p.instances.size() > 0) { + if (backupTarget.equals(p.info.provider.getPackageName()) + || p.isHostedBy(backupTarget)) { + serializeProvider(out, p); + p.tag = index++; + } + } + } + + N = mHosts.size(); + index = 0; + for (int i = 0; i < N; i++) { + Host host = mHosts.get(i); + if (backupTarget.equals(host.packageName) + || host.hostsPackage(backupTarget)) { + serializeHost(out, host); + host.tag = index++; + } + } + + // All widget instances involving this package, + // either as host or as provider + N = mAppWidgetIds.size(); + for (int i = 0; i < N; i++) { + AppWidgetId id = mAppWidgetIds.get(i); + if (backupTarget.equals(id.host.packageName) + || backupTarget.equals(id.provider.info.provider.getPackageName())) { + serializeAppWidgetId(out, id); + } + } + + out.endTag(null, "ws"); + out.endDocument(); + } catch (IOException e) { + Slog.w(TAG, "Unable to save widget state for " + backupTarget); + return null; + } + + } + return stream.toByteArray(); + } + + public void restoreStarting() { + if (DEBUG_BACKUP) { + Slog.i(TAG, "restore starting for user " + mUserId); + } + synchronized (mRestoredWidgetIds) { + // We're starting a new "system" restore operation, so any widget restore + // state that we see from here on is intended to replace the current + // widget configuration of any/all of the affected apps. + mPrunedApps.clear(); + mUpdatesByProvider.clear(); + mUpdatesByHost.clear(); + } + } + + // We're restoring widget state for 'pkg', so we start by wiping (a) all widget + // instances that are hosted by that app, and (b) all instances in other hosts + // for which 'pkg' is the provider. We assume that we'll be restoring all of + // these hosts & providers, so will be reconstructing a correct live state. + private void pruneWidgetStateLr(String pkg) { + if (!mPrunedApps.contains(pkg)) { + if (DEBUG_BACKUP) { + Slog.i(TAG, "pruning widget state for restoring package " + pkg); + } + for (int i = mAppWidgetIds.size() - 1; i >= 0; i--) { + AppWidgetId id = mAppWidgetIds.get(i); + Provider p = id.provider; + if (id.host.packageName.equals(pkg) + || p.info.provider.getPackageName().equals(pkg)) { + // 'pkg' is either the host or the provider for this instances, + // so we tear it down in anticipation of it (possibly) being + // reconstructed due to the restore + p.instances.remove(id); + + unbindAppWidgetRemoteViewsServicesLocked(id); + mAppWidgetIds.remove(i); + } + } + mPrunedApps.add(pkg); + } else { + if (DEBUG_BACKUP) { + Slog.i(TAG, "already pruned " + pkg + ", continuing normally"); + } + } + } + + // Accumulate a list of updates that affect the given provider for a final + // coalesced notification broadcast once restore is over. + class RestoreUpdateRecord { + public int oldId; + public int newId; + public boolean notified; + + public RestoreUpdateRecord(int theOldId, int theNewId) { + oldId = theOldId; + newId = theNewId; + notified = false; + } + } + + HashMap<Provider, ArrayList<RestoreUpdateRecord>> mUpdatesByProvider + = new HashMap<Provider, ArrayList<RestoreUpdateRecord>>(); + HashMap<Host, ArrayList<RestoreUpdateRecord>> mUpdatesByHost + = new HashMap<Host, ArrayList<RestoreUpdateRecord>>(); + + private boolean alreadyStashed(ArrayList<RestoreUpdateRecord> stash, + final int oldId, final int newId) { + final int N = stash.size(); + for (int i = 0; i < N; i++) { + RestoreUpdateRecord r = stash.get(i); + if (r.oldId == oldId && r.newId == newId) { + return true; + } + } + return false; + } + + private void stashProviderRestoreUpdateLr(Provider provider, int oldId, int newId) { + ArrayList<RestoreUpdateRecord> r = mUpdatesByProvider.get(provider); + if (r == null) { + r = new ArrayList<RestoreUpdateRecord>(); + mUpdatesByProvider.put(provider, r); + } else { + // don't duplicate + if (alreadyStashed(r, oldId, newId)) { + if (DEBUG_BACKUP) { + Slog.i(TAG, "ID remap " + oldId + " -> " + newId + + " already stashed for " + provider); + } + return; + } + } + r.add(new RestoreUpdateRecord(oldId, newId)); + } + + private void stashHostRestoreUpdateLr(Host host, int oldId, int newId) { + ArrayList<RestoreUpdateRecord> r = mUpdatesByHost.get(host); + if (r == null) { + r = new ArrayList<RestoreUpdateRecord>(); + mUpdatesByHost.put(host, r); + } else { + if (alreadyStashed(r, oldId, newId)) { + if (DEBUG_BACKUP) { + Slog.i(TAG, "ID remap " + oldId + " -> " + newId + + " already stashed for " + host); + } + return; + } + } + r.add(new RestoreUpdateRecord(oldId, newId)); + } + + public void restoreWidgetState(String packageName, byte[] restoredState) { + if (!mHasFeature) { + return; + } + + if (DEBUG_BACKUP) { + Slog.i(TAG, "Restoring widget state for " + packageName); + } + + ByteArrayInputStream stream = new ByteArrayInputStream(restoredState); + try { + // Providers mentioned in the widget dataset by ordinal + ArrayList<Provider> restoredProviders = new ArrayList<Provider>(); + + // Hosts mentioned in the widget dataset by ordinal + ArrayList<Host> restoredHosts = new ArrayList<Host>(); + + //HashSet<String> toNotify = new HashSet<String>(); + + XmlPullParser parser = Xml.newPullParser(); + parser.setInput(stream, null); + + synchronized (mAppWidgetIds) { + synchronized (mRestoredWidgetIds) { + int type; + do { + type = parser.next(); + if (type == XmlPullParser.START_TAG) { + final String tag = parser.getName(); + if ("ws".equals(tag)) { + String v = parser.getAttributeValue(null, "version"); + String pkg = parser.getAttributeValue(null, "pkg"); + + // TODO: fix up w.r.t. canonical vs current package names + if (!packageName.equals(pkg)) { + Slog.w(TAG, "Package mismatch in ws"); + return; + } + + int version = Integer.parseInt(v); + if (version > WIDGET_STATE_VERSION) { + Slog.w(TAG, "Unable to process state version " + version); + return; + } + } else if ("p".equals(tag)) { + String pkg = parser.getAttributeValue(null, "pkg"); + String cl = parser.getAttributeValue(null, "cl"); + + // hostedProviders index will match 'p' attribute in widget's + // entry in the xml file being restored + // If there's no live entry for this provider, add an inactive one + // so that widget IDs referring to them can be properly allocated + final ComponentName cn = new ComponentName(pkg, cl); + Provider p = lookupProviderLocked(cn, mInstalledProviders); + if (p == null) { + p = new Provider(); + p.info = new AppWidgetProviderInfo(); + p.info.provider = cn; + p.zombie = true; + mInstalledProviders.add(p); + } + if (DEBUG_BACKUP) { + Slog.i(TAG, " provider " + cn); + } + restoredProviders.add(p); + } else if ("h".equals(tag)) { + // The host app may not yet exist on the device. If it's here we + // just use the existing Host entry, otherwise we create a + // placeholder whose uid will be fixed up at PACKAGE_ADDED time. + String pkg = parser.getAttributeValue(null, "pkg"); + int uid; + try { + uid = getUidForPackage(pkg); + } catch (NameNotFoundException e) { + uid = -1; + } + int hostId = Integer.parseInt( + parser.getAttributeValue(null, "id"), 16); + Host h = lookupOrAddHostLocked(uid, pkg, hostId); + if (DEBUG_BACKUP) { + Slog.i(TAG, " host[" + restoredHosts.size() + + "]: {" + h.packageName + ":" + h.hostId + "}"); + } + restoredHosts.add(h); + } else if ("g".equals(tag)) { + int restoredId = Integer.parseInt( + parser.getAttributeValue(null, "id"), 16); + int hostIndex = Integer.parseInt( + parser.getAttributeValue(null, "h"), 16); + Host host = restoredHosts.get(hostIndex); + Provider p = null; + String prov = parser.getAttributeValue(null, "p"); + if (prov != null) { + // could have been null if the app had allocated an id + // but not yet established a binding under that id + int which = Integer.parseInt(prov, 16); + p = restoredProviders.get(which); + } + + // We'll be restoring widget state for both the host and + // provider sides of this widget ID, so make sure we are + // beginning from a clean slate on both fronts. + pruneWidgetStateLr(host.packageName); + if (p != null) { + pruneWidgetStateLr(p.info.provider.getPackageName()); + } + + // Have we heard about this ancestral widget instance before? + AppWidgetId id = findRestoredWidgetLocked(restoredId, host, p); + if (id == null) { + id = new AppWidgetId(); + id.appWidgetId = mNextAppWidgetId++; + id.restoredId = restoredId; + id.options = parseWidgetIdOptions(parser); + id.host = host; + id.host.instances.add(id); + id.provider = p; + if (id.provider != null) { + id.provider.instances.add(id); + } + if (DEBUG_BACKUP) { + Slog.i(TAG, "New restored id " + restoredId + + " now " + id); + } + mAppWidgetIds.add(id); + } + if (id.provider.info != null) { + stashProviderRestoreUpdateLr(id.provider, + restoredId, id.appWidgetId); + } else { + Slog.w(TAG, "Missing provider for restored widget " + id); + } + stashHostRestoreUpdateLr(id.host, restoredId, id.appWidgetId); + + if (DEBUG_BACKUP) { + Slog.i(TAG, " instance: " + restoredId + + " -> " + id.appWidgetId + + " :: p=" + id.provider); + } + } + } + } while (type != XmlPullParser.END_DOCUMENT); + + // We've updated our own bookkeeping. We'll need to notify the hosts and + // providers about the changes, but we can't do that yet because the restore + // target is not necessarily fully live at this moment. Set aside the + // information for now; the backup manager will call us once more at the + // end of the process when all of the targets are in a known state, and we + // will update at that point. + } + } + } catch (XmlPullParserException e) { + Slog.w(TAG, "Unable to restore widget state for " + packageName); + } catch (IOException e) { + Slog.w(TAG, "Unable to restore widget state for " + packageName); + } finally { + saveStateAsync(); + } + } + + // Called once following the conclusion of a restore operation. This is when we + // send out updates to apps involved in widget-state restore telling them about + // the new widget ID space. + public void restoreFinished() { + if (DEBUG_BACKUP) { + Slog.i(TAG, "restoreFinished for " + mUserId); + } + + final UserHandle userHandle = new UserHandle(mUserId); + synchronized (mRestoredWidgetIds) { + // Build the providers' broadcasts and send them off + Set<Entry<Provider, ArrayList<RestoreUpdateRecord>>> providerEntries + = mUpdatesByProvider.entrySet(); + for (Entry<Provider, ArrayList<RestoreUpdateRecord>> e : providerEntries) { + // For each provider there's a list of affected IDs + Provider provider = e.getKey(); + ArrayList<RestoreUpdateRecord> updates = e.getValue(); + final int pending = countPendingUpdates(updates); + if (DEBUG_BACKUP) { + Slog.i(TAG, "Provider " + provider + " pending: " + pending); + } + if (pending > 0) { + int[] oldIds = new int[pending]; + int[] newIds = new int[pending]; + final int N = updates.size(); + int nextPending = 0; + for (int i = 0; i < N; i++) { + RestoreUpdateRecord r = updates.get(i); + if (!r.notified) { + r.notified = true; + oldIds[nextPending] = r.oldId; + newIds[nextPending] = r.newId; + nextPending++; + if (DEBUG_BACKUP) { + Slog.i(TAG, " " + r.oldId + " => " + r.newId); + } + } + } + sendWidgetRestoreBroadcast(AppWidgetManager.ACTION_APPWIDGET_RESTORED, + provider, null, oldIds, newIds, userHandle); + } + } + + // same thing per host + Set<Entry<Host, ArrayList<RestoreUpdateRecord>>> hostEntries + = mUpdatesByHost.entrySet(); + for (Entry<Host, ArrayList<RestoreUpdateRecord>> e : hostEntries) { + Host host = e.getKey(); + if (host.uid > 0) { + ArrayList<RestoreUpdateRecord> updates = e.getValue(); + final int pending = countPendingUpdates(updates); + if (DEBUG_BACKUP) { + Slog.i(TAG, "Host " + host + " pending: " + pending); + } + if (pending > 0) { + int[] oldIds = new int[pending]; + int[] newIds = new int[pending]; + final int N = updates.size(); + int nextPending = 0; + for (int i = 0; i < N; i++) { + RestoreUpdateRecord r = updates.get(i); + if (!r.notified) { + r.notified = true; + oldIds[nextPending] = r.oldId; + newIds[nextPending] = r.newId; + nextPending++; + if (DEBUG_BACKUP) { + Slog.i(TAG, " " + r.oldId + " => " + r.newId); + } + } + } + sendWidgetRestoreBroadcast(AppWidgetManager.ACTION_APPWIDGET_HOST_RESTORED, + null, host, oldIds, newIds, userHandle); + } + } + } + } + } + + private int countPendingUpdates(ArrayList<RestoreUpdateRecord> updates) { + int pending = 0; + final int N = updates.size(); + for (int i = 0; i < N; i++) { + RestoreUpdateRecord r = updates.get(i); + if (!r.notified) { + pending++; + } + } + return pending; + } + + void sendWidgetRestoreBroadcast(String action, Provider provider, Host host, + int[] oldIds, int[] newIds, UserHandle userHandle) { + Intent intent = new Intent(action); + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_OLD_IDS, oldIds); + intent.putExtra(AppWidgetManager.EXTRA_APPWIDGET_IDS, newIds); + if (provider != null) { + intent.setComponent(provider.info.provider); + mContext.sendBroadcastAsUser(intent, userHandle); + } + if (host != null) { + intent.setComponent(null); + intent.setPackage(host.packageName); + intent.putExtra(AppWidgetManager.EXTRA_HOST_ID, host.hostId); + mContext.sendBroadcastAsUser(intent, userHandle); + } + } + private Provider parseProviderInfoXml(ComponentName component, ResolveInfo ri) { Provider p = null; @@ -1660,10 +2343,7 @@ class AppWidgetServiceImpl { for (int i = 0; i < N; i++) { Provider p = mInstalledProviders.get(i); if (p.instances.size() > 0) { - out.startTag(null, "p"); - out.attribute(null, "pkg", p.info.provider.getPackageName()); - out.attribute(null, "cl", p.info.provider.getClassName()); - out.endTag(null, "p"); + serializeProvider(out, p); p.tag = providerIndex; providerIndex++; } @@ -1672,35 +2352,14 @@ class AppWidgetServiceImpl { N = mHosts.size(); for (int i = 0; i < N; i++) { Host host = mHosts.get(i); - out.startTag(null, "h"); - out.attribute(null, "pkg", host.packageName); - out.attribute(null, "id", Integer.toHexString(host.hostId)); - out.endTag(null, "h"); + serializeHost(out, host); host.tag = i; } N = mAppWidgetIds.size(); for (int i = 0; i < N; i++) { AppWidgetId id = mAppWidgetIds.get(i); - out.startTag(null, "g"); - out.attribute(null, "id", Integer.toHexString(id.appWidgetId)); - out.attribute(null, "h", Integer.toHexString(id.host.tag)); - if (id.provider != null) { - out.attribute(null, "p", Integer.toHexString(id.provider.tag)); - } - if (id.options != null) { - out.attribute(null, "min_width", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MIN_WIDTH))); - out.attribute(null, "min_height", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MIN_HEIGHT))); - out.attribute(null, "max_width", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MAX_WIDTH))); - out.attribute(null, "max_height", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_MAX_HEIGHT))); - out.attribute(null, "host_category", Integer.toHexString(id.options.getInt( - AppWidgetManager.OPTION_APPWIDGET_HOST_CATEGORY))); - } - out.endTag(null, "g"); + serializeAppWidgetId(out, id); } Iterator<String> it = mPackagesWithBindWidgetPermission.iterator(); @@ -1801,6 +2460,11 @@ class AppWidgetServiceImpl { mNextAppWidgetId = id.appWidgetId + 1; } + // restored ID is allowed to be absent + String restoredIdString = parser.getAttributeValue(null, "rid"); + id.restoredId = (restoredIdString == null) ? 0 + : Integer.parseInt(restoredIdString, 16); + Bundle options = new Bundle(); String minWidthString = parser.getAttributeValue(null, "min_width"); if (minWidthString != null) { @@ -1975,8 +2639,7 @@ class AppWidgetServiceImpl { continue; } if (pkgName.equals(ai.packageName)) { - addProviderLocked(ri); - providersAdded = true; + providersAdded = addProviderLocked(ri); } } |