| /* |
| * Copyright (C) 2017 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.autofill; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.app.assist.AssistStructure; |
| import android.app.assist.AssistStructure.ViewNode; |
| import android.metrics.LogMaker; |
| import android.os.Bundle; |
| import android.service.autofill.Dataset; |
| import android.util.ArrayMap; |
| import android.util.ArraySet; |
| import android.util.Slog; |
| import android.view.WindowManager; |
| import android.view.autofill.AutofillId; |
| import android.view.autofill.AutofillValue; |
| |
| import com.android.internal.logging.nano.MetricsProto.MetricsEvent; |
| import com.android.internal.util.ArrayUtils; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Arrays; |
| import java.util.LinkedList; |
| import java.util.Objects; |
| import java.util.Set; |
| |
| public final class Helper { |
| |
| private static final String TAG = "AutofillHelper"; |
| |
| /** |
| * Defines a logging flag that can be dynamically changed at runtime using |
| * {@code cmd autofill set log_level debug}. |
| */ |
| public static boolean sDebug = false; |
| |
| /** |
| * Defines a logging flag that can be dynamically changed at runtime using |
| * {@code cmd autofill set log_level verbose}. |
| */ |
| public static boolean sVerbose = false; |
| |
| /** |
| * Maximum number of partitions that can be allowed in a session. |
| * |
| * <p>Can be modified using {@code cmd autofill set max_partitions}. |
| */ |
| static int sPartitionMaxCount = 10; |
| |
| /** |
| * Maximum number of visible datasets in the dataset picker UI. |
| * |
| * <p>Can be modified using {@code cmd autofill set max_visible_datasets}. |
| */ |
| public static int sVisibleDatasetsMaxCount = 3; |
| |
| private Helper() { |
| throw new UnsupportedOperationException("contains static members only"); |
| } |
| |
| static void append(StringBuilder builder, Bundle bundle) { |
| if (bundle == null || !sVerbose) { |
| builder.append("null"); |
| return; |
| } |
| final Set<String> keySet = bundle.keySet(); |
| builder.append("[Bundle with ").append(keySet.size()).append(" extras:"); |
| for (String key : keySet) { |
| final Object value = bundle.get(key); |
| builder.append(' ').append(key).append('='); |
| builder.append((value instanceof Object[]) |
| ? Arrays.toString((Objects[]) value) : value); |
| } |
| builder.append(']'); |
| } |
| |
| static String bundleToString(Bundle bundle) { |
| final StringBuilder builder = new StringBuilder(); |
| append(builder, bundle); |
| return builder.toString(); |
| } |
| |
| @Nullable |
| static AutofillId[] toArray(@Nullable ArraySet<AutofillId> set) { |
| if (set == null) return null; |
| |
| final AutofillId[] array = new AutofillId[set.size()]; |
| for (int i = 0; i < set.size(); i++) { |
| array[i] = set.valueAt(i); |
| } |
| return array; |
| } |
| |
| @NonNull |
| public static String paramsToString(@NonNull WindowManager.LayoutParams params) { |
| final StringBuilder builder = new StringBuilder(25); |
| params.dumpDimensions(builder); |
| return builder.toString(); |
| } |
| |
| @NonNull |
| static ArrayMap<AutofillId, AutofillValue> getFields(@NonNull Dataset dataset) { |
| final ArrayList<AutofillId> ids = dataset.getFieldIds(); |
| final ArrayList<AutofillValue> values = dataset.getFieldValues(); |
| final int size = ids == null ? 0 : ids.size(); |
| final ArrayMap<AutofillId, AutofillValue> fields = new ArrayMap<>(size); |
| for (int i = 0; i < size; i++) { |
| fields.put(ids.get(i), values.get(i)); |
| } |
| return fields; |
| } |
| |
| @NonNull |
| public static LogMaker newLogMaker(int category, String packageName, |
| String servicePackageName) { |
| final LogMaker log = new LogMaker(category).setPackageName(packageName); |
| if (servicePackageName != null) { |
| log.addTaggedData(MetricsEvent.FIELD_AUTOFILL_SERVICE, servicePackageName); |
| } |
| return log; |
| } |
| |
| public static void printlnRedactedText(@NonNull PrintWriter pw, @Nullable CharSequence text) { |
| if (text == null) { |
| pw.println("null"); |
| } else { |
| pw.print(text.length()); pw.println("_chars"); |
| } |
| } |
| |
| /** |
| * Finds the {@link ViewNode} that has the requested {@code autofillId}, if any. |
| */ |
| @Nullable |
| public static ViewNode findViewNodeByAutofillId(@NonNull AssistStructure structure, |
| @NonNull AutofillId autofillId) { |
| return findViewNode(structure, (node) -> { |
| return autofillId.equals(node.getAutofillId()); |
| }); |
| } |
| |
| private static ViewNode findViewNode(@NonNull AssistStructure structure, |
| @NonNull ViewNodeFilter filter) { |
| final LinkedList<ViewNode> nodesToProcess = new LinkedList<>(); |
| final int numWindowNodes = structure.getWindowNodeCount(); |
| for (int i = 0; i < numWindowNodes; i++) { |
| nodesToProcess.add(structure.getWindowNodeAt(i).getRootViewNode()); |
| } |
| while (!nodesToProcess.isEmpty()) { |
| final ViewNode node = nodesToProcess.removeFirst(); |
| if (filter.matches(node)) { |
| return node; |
| } |
| for (int i = 0; i < node.getChildCount(); i++) { |
| nodesToProcess.addLast(node.getChildAt(i)); |
| } |
| } |
| |
| return null; |
| } |
| |
| /** |
| * Sanitize the {@code webDomain} property of the URL bar node on compat mode. |
| * |
| * @param structure Assist structure |
| * @param urlBarIds list of ids; only the first id found will be sanitized. |
| * |
| * @return the node containing the URL bar |
| */ |
| @Nullable |
| public static ViewNode sanitizeUrlBar(@NonNull AssistStructure structure, |
| @NonNull String[] urlBarIds) { |
| final ViewNode urlBarNode = findViewNode(structure, (node) -> { |
| return ArrayUtils.contains(urlBarIds, node.getIdEntry()); |
| }); |
| if (urlBarNode != null) { |
| final String domain = urlBarNode.getText().toString(); |
| if (domain.isEmpty()) { |
| if (sDebug) Slog.d(TAG, "sanitizeUrlBar(): empty on " + urlBarNode.getIdEntry()); |
| return null; |
| } |
| urlBarNode.setWebDomain(domain); |
| if (sDebug) { |
| Slog.d(TAG, "sanitizeUrlBar(): id=" + urlBarNode.getIdEntry() + ", domain=" |
| + urlBarNode.getWebDomain()); |
| } |
| } |
| return urlBarNode; |
| } |
| |
| private interface ViewNodeFilter { |
| boolean matches(ViewNode node); |
| } |
| } |