| /* |
| * 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 android.content; |
| |
| import android.annotation.NonNull; |
| import android.annotation.Nullable; |
| import android.annotation.SuppressLint; |
| import android.annotation.TestApi; |
| import android.app.ActivityThread; |
| import android.os.Parcel; |
| import android.os.Parcelable; |
| import android.util.ArraySet; |
| import android.util.Log; |
| import android.view.contentcapture.ContentCaptureManager; |
| import android.view.contentcapture.ContentCaptureManager.ContentCaptureClient; |
| |
| import com.android.internal.annotations.VisibleForTesting; |
| |
| import java.io.PrintWriter; |
| import java.util.ArrayList; |
| import java.util.Collections; |
| import java.util.List; |
| import java.util.stream.Collectors; |
| import java.util.stream.IntStream; |
| |
| /** |
| * Content capture options for a given package. |
| * |
| * <p>This object is created by the Content Capture System Service and passed back to the app when |
| * the application is created. |
| * |
| * @hide |
| */ |
| @TestApi |
| public final class ContentCaptureOptions implements Parcelable { |
| |
| private static final String TAG = ContentCaptureOptions.class.getSimpleName(); |
| |
| /** |
| * Logging level for {@code logcat} statements. |
| */ |
| public final int loggingLevel; |
| |
| /** |
| * Maximum number of events that are buffered before sent to the app. |
| */ |
| public final int maxBufferSize; |
| |
| /** |
| * Frequency the buffer is flushed if idle. |
| */ |
| public final int idleFlushingFrequencyMs; |
| |
| /** |
| * Frequency the buffer is flushed if last event is a text change. |
| */ |
| public final int textChangeFlushingFrequencyMs; |
| |
| /** |
| * Size of events that are logging on {@code dump}. |
| */ |
| public final int logHistorySize; |
| |
| /** |
| * Disable flush when receiving a VIEW_TREE_APPEARING event. |
| * @hide |
| */ |
| public final boolean disableFlushForViewTreeAppearing; |
| |
| /** |
| * Is the content capture receiver enabled. |
| * |
| * @hide |
| */ |
| public final boolean enableReceiver; |
| |
| /** |
| * Options for the content protection flow. |
| * |
| * @hide |
| */ |
| @NonNull public final ContentProtectionOptions contentProtectionOptions; |
| |
| /** |
| * List of activities explicitly allowlisted for content capture (or {@code null} if allowlisted |
| * for all acitivites in the package). |
| */ |
| @Nullable |
| @SuppressLint("NullableCollection") |
| public final ArraySet<ComponentName> whitelistedComponents; |
| |
| /** |
| * Used to enable just a small set of APIs so it can used by activities belonging to the |
| * content capture service APK. |
| */ |
| public final boolean lite; |
| |
| /** |
| * Constructor for "lite" objects that are just used to enable a {@link ContentCaptureManager} |
| * for contexts belonging to the content capture service app. |
| */ |
| public ContentCaptureOptions(int loggingLevel) { |
| this( |
| /* lite= */ true, |
| loggingLevel, |
| /* maxBufferSize= */ 0, |
| /* idleFlushingFrequencyMs= */ 0, |
| /* textChangeFlushingFrequencyMs= */ 0, |
| /* logHistorySize= */ 0, |
| /* disableFlushForViewTreeAppearing= */ false, |
| /* enableReceiver= */ false, |
| new ContentProtectionOptions( |
| /* enableReceiver= */ false, |
| /* bufferSize= */ 0, |
| /* requiredGroups= */ Collections.emptyList(), |
| /* optionalGroups= */ Collections.emptyList(), |
| /* optionalGroupsThreshold= */ 0), |
| /* whitelistedComponents= */ null); |
| } |
| |
| /** Default constructor. */ |
| public ContentCaptureOptions( |
| int loggingLevel, |
| int maxBufferSize, |
| int idleFlushingFrequencyMs, |
| int textChangeFlushingFrequencyMs, |
| int logHistorySize, |
| @SuppressLint({"ConcreteCollection", "NullableCollection"}) @Nullable |
| ArraySet<ComponentName> whitelistedComponents) { |
| this( |
| /* lite= */ false, |
| loggingLevel, |
| maxBufferSize, |
| idleFlushingFrequencyMs, |
| textChangeFlushingFrequencyMs, |
| logHistorySize, |
| ContentCaptureManager.DEFAULT_DISABLE_FLUSH_FOR_VIEW_TREE_APPEARING, |
| ContentCaptureManager.DEFAULT_ENABLE_CONTENT_CAPTURE_RECEIVER, |
| new ContentProtectionOptions(), |
| whitelistedComponents); |
| } |
| |
| /** @hide */ |
| public ContentCaptureOptions( |
| int loggingLevel, |
| int maxBufferSize, |
| int idleFlushingFrequencyMs, |
| int textChangeFlushingFrequencyMs, |
| int logHistorySize, |
| boolean disableFlushForViewTreeAppearing, |
| boolean enableReceiver, |
| @NonNull ContentProtectionOptions contentProtectionOptions, |
| @SuppressLint({"ConcreteCollection", "NullableCollection"}) @Nullable |
| ArraySet<ComponentName> whitelistedComponents) { |
| this( |
| /* lite= */ false, |
| loggingLevel, |
| maxBufferSize, |
| idleFlushingFrequencyMs, |
| textChangeFlushingFrequencyMs, |
| logHistorySize, |
| disableFlushForViewTreeAppearing, |
| enableReceiver, |
| contentProtectionOptions, |
| whitelistedComponents); |
| } |
| |
| /** @hide */ |
| @VisibleForTesting |
| public ContentCaptureOptions(@Nullable ArraySet<ComponentName> whitelistedComponents) { |
| this( |
| ContentCaptureManager.LOGGING_LEVEL_VERBOSE, |
| ContentCaptureManager.DEFAULT_MAX_BUFFER_SIZE, |
| ContentCaptureManager.DEFAULT_IDLE_FLUSHING_FREQUENCY_MS, |
| ContentCaptureManager.DEFAULT_TEXT_CHANGE_FLUSHING_FREQUENCY_MS, |
| ContentCaptureManager.DEFAULT_LOG_HISTORY_SIZE, |
| ContentCaptureManager.DEFAULT_DISABLE_FLUSH_FOR_VIEW_TREE_APPEARING, |
| ContentCaptureManager.DEFAULT_ENABLE_CONTENT_CAPTURE_RECEIVER, |
| new ContentProtectionOptions(), |
| whitelistedComponents); |
| } |
| |
| private ContentCaptureOptions( |
| boolean lite, |
| int loggingLevel, |
| int maxBufferSize, |
| int idleFlushingFrequencyMs, |
| int textChangeFlushingFrequencyMs, |
| int logHistorySize, |
| boolean disableFlushForViewTreeAppearing, |
| boolean enableReceiver, |
| @NonNull ContentProtectionOptions contentProtectionOptions, |
| @SuppressLint({"ConcreteCollection", "NullableCollection"}) @Nullable |
| ArraySet<ComponentName> whitelistedComponents) { |
| this.lite = lite; |
| this.loggingLevel = loggingLevel; |
| this.maxBufferSize = maxBufferSize; |
| this.idleFlushingFrequencyMs = idleFlushingFrequencyMs; |
| this.textChangeFlushingFrequencyMs = textChangeFlushingFrequencyMs; |
| this.logHistorySize = logHistorySize; |
| this.disableFlushForViewTreeAppearing = disableFlushForViewTreeAppearing; |
| this.enableReceiver = enableReceiver; |
| this.contentProtectionOptions = contentProtectionOptions; |
| this.whitelistedComponents = whitelistedComponents; |
| } |
| |
| public static ContentCaptureOptions forWhitelistingItself() { |
| final ActivityThread at = ActivityThread.currentActivityThread(); |
| if (at == null) { |
| throw new IllegalStateException("No ActivityThread"); |
| } |
| |
| final String packageName = at.getApplication().getPackageName(); |
| |
| if (!"android.contentcaptureservice.cts".equals(packageName) |
| && !"android.translation.cts".equals(packageName)) { |
| Log.e(TAG, "forWhitelistingItself(): called by " + packageName); |
| throw new SecurityException("Thou shall not pass!"); |
| } |
| |
| final ContentCaptureOptions options = |
| new ContentCaptureOptions(/* whitelistedComponents= */ null); |
| // Always log, as it's used by test only |
| Log.i(TAG, "forWhitelistingItself(" + packageName + "): " + options); |
| |
| return options; |
| } |
| |
| /** @hide */ |
| @VisibleForTesting |
| public boolean isWhitelisted(@NonNull Context context) { |
| if (whitelistedComponents == null) return true; // whole package is allowlisted |
| final ContentCaptureClient client = context.getContentCaptureClient(); |
| if (client == null) { |
| // Shouldn't happen, but it doesn't hurt to check... |
| Log.w(TAG, "isWhitelisted(): no ContentCaptureClient on " + context); |
| return false; |
| } |
| return whitelistedComponents.contains(client.contentCaptureClientGetComponentName()); |
| } |
| |
| @Override |
| public String toString() { |
| if (lite) { |
| return "ContentCaptureOptions [loggingLevel=" + loggingLevel + " (lite)]"; |
| } |
| final StringBuilder string = new StringBuilder("ContentCaptureOptions ["); |
| string.append("loggingLevel=") |
| .append(loggingLevel) |
| .append(", maxBufferSize=") |
| .append(maxBufferSize) |
| .append(", idleFlushingFrequencyMs=") |
| .append(idleFlushingFrequencyMs) |
| .append(", textChangeFlushingFrequencyMs=") |
| .append(textChangeFlushingFrequencyMs) |
| .append(", logHistorySize=") |
| .append(logHistorySize) |
| .append(", disableFlushForViewTreeAppearing=") |
| .append(disableFlushForViewTreeAppearing) |
| .append(", enableReceiver=") |
| .append(enableReceiver) |
| .append(", contentProtectionOptions=") |
| .append(contentProtectionOptions); |
| if (whitelistedComponents != null) { |
| string.append(", whitelisted=").append(whitelistedComponents); |
| } |
| return string.append(']').toString(); |
| } |
| |
| /** @hide */ |
| public void dumpShort(@NonNull PrintWriter pw) { |
| pw.print("logLvl="); pw.print(loggingLevel); |
| if (lite) { |
| pw.print(", lite"); |
| return; |
| } |
| pw.print(", bufferSize="); |
| pw.print(maxBufferSize); |
| pw.print(", idle="); |
| pw.print(idleFlushingFrequencyMs); |
| pw.print(", textIdle="); |
| pw.print(textChangeFlushingFrequencyMs); |
| pw.print(", logSize="); |
| pw.print(logHistorySize); |
| pw.print(", disableFlushForViewTreeAppearing="); |
| pw.print(disableFlushForViewTreeAppearing); |
| pw.print(", enableReceiver="); |
| pw.print(enableReceiver); |
| pw.print(", contentProtectionOptions=["); |
| contentProtectionOptions.dumpShort(pw); |
| pw.print("]"); |
| if (whitelistedComponents != null) { |
| pw.print(", whitelisted="); pw.print(whitelistedComponents); |
| } |
| } |
| |
| @Override |
| public int describeContents() { |
| return 0; |
| } |
| |
| @Override |
| public void writeToParcel(Parcel parcel, int flags) { |
| parcel.writeBoolean(lite); |
| parcel.writeInt(loggingLevel); |
| if (lite) return; |
| |
| parcel.writeInt(maxBufferSize); |
| parcel.writeInt(idleFlushingFrequencyMs); |
| parcel.writeInt(textChangeFlushingFrequencyMs); |
| parcel.writeInt(logHistorySize); |
| parcel.writeBoolean(disableFlushForViewTreeAppearing); |
| parcel.writeBoolean(enableReceiver); |
| contentProtectionOptions.writeToParcel(parcel); |
| parcel.writeArraySet(whitelistedComponents); |
| } |
| |
| public static final @android.annotation.NonNull Parcelable.Creator<ContentCaptureOptions> CREATOR = |
| new Parcelable.Creator<ContentCaptureOptions>() { |
| |
| @Override |
| public ContentCaptureOptions createFromParcel(Parcel parcel) { |
| final boolean lite = parcel.readBoolean(); |
| final int loggingLevel = parcel.readInt(); |
| if (lite) { |
| return new ContentCaptureOptions(loggingLevel); |
| } |
| final int maxBufferSize = parcel.readInt(); |
| final int idleFlushingFrequencyMs = parcel.readInt(); |
| final int textChangeFlushingFrequencyMs = parcel.readInt(); |
| final int logHistorySize = parcel.readInt(); |
| final boolean disableFlushForViewTreeAppearing = parcel.readBoolean(); |
| final boolean enableReceiver = parcel.readBoolean(); |
| final ContentProtectionOptions contentProtectionOptions = |
| ContentProtectionOptions.createFromParcel(parcel); |
| @SuppressWarnings("unchecked") |
| final ArraySet<ComponentName> whitelistedComponents = |
| (ArraySet<ComponentName>) parcel.readArraySet(null); |
| return new ContentCaptureOptions( |
| loggingLevel, |
| maxBufferSize, |
| idleFlushingFrequencyMs, |
| textChangeFlushingFrequencyMs, |
| logHistorySize, |
| disableFlushForViewTreeAppearing, |
| enableReceiver, |
| contentProtectionOptions, |
| whitelistedComponents); |
| } |
| |
| @Override |
| public ContentCaptureOptions[] newArray(int size) { |
| return new ContentCaptureOptions[size]; |
| } |
| }; |
| |
| /** |
| * Content protection options for a given package. |
| * |
| * <p>Does not implement {@code Parcelable} since it is an inner class without a matching AIDL. |
| * |
| * @hide |
| */ |
| public static class ContentProtectionOptions { |
| |
| /** |
| * Is the content protection receiver enabled. |
| * |
| * @hide |
| */ |
| public final boolean enableReceiver; |
| |
| /** |
| * Size of the in-memory ring buffer for the content protection flow. |
| * |
| * @hide |
| */ |
| public final int bufferSize; |
| |
| /** |
| * The list of required groups of strings to match. |
| * |
| * @hide |
| */ |
| @NonNull public final List<List<String>> requiredGroups; |
| |
| /** |
| * The list of optional groups of strings to match. |
| * |
| * @hide |
| */ |
| @NonNull public final List<List<String>> optionalGroups; |
| |
| /** |
| * The minimal number of optional groups that have to be matched. This is the threshold |
| * value and comparison is done with greater than or equals. |
| * |
| * @hide |
| */ |
| public final int optionalGroupsThreshold; |
| |
| /** |
| * Empty constructor with default values. |
| * |
| * @hide |
| */ |
| public ContentProtectionOptions() { |
| this( |
| ContentCaptureManager.DEFAULT_ENABLE_CONTENT_PROTECTION_RECEIVER, |
| ContentCaptureManager.DEFAULT_CONTENT_PROTECTION_BUFFER_SIZE, |
| ContentCaptureManager.DEFAULT_CONTENT_PROTECTION_REQUIRED_GROUPS, |
| ContentCaptureManager.DEFAULT_CONTENT_PROTECTION_OPTIONAL_GROUPS, |
| ContentCaptureManager.DEFAULT_CONTENT_PROTECTION_OPTIONAL_GROUPS_THRESHOLD); |
| } |
| |
| /** |
| * Full primary constructor. |
| * |
| * @hide |
| */ |
| public ContentProtectionOptions( |
| boolean enableReceiver, |
| int bufferSize, |
| @NonNull List<List<String>> requiredGroups, |
| @NonNull List<List<String>> optionalGroups, |
| int optionalGroupsThreshold) { |
| this.enableReceiver = enableReceiver; |
| this.bufferSize = bufferSize; |
| this.requiredGroups = requiredGroups; |
| this.optionalGroups = optionalGroups; |
| this.optionalGroupsThreshold = optionalGroupsThreshold; |
| } |
| |
| @Override |
| public String toString() { |
| StringBuilder stringBuilder = new StringBuilder("ContentProtectionOptions ["); |
| stringBuilder |
| .append("enableReceiver=") |
| .append(enableReceiver) |
| .append(", bufferSize=") |
| .append(bufferSize) |
| .append(", requiredGroupsSize=") |
| .append(requiredGroups.size()) |
| .append(", optionalGroupsSize=") |
| .append(optionalGroups.size()) |
| .append(", optionalGroupsThreshold=") |
| .append(optionalGroupsThreshold); |
| |
| return stringBuilder.append(']').toString(); |
| } |
| |
| private void dumpShort(@NonNull PrintWriter pw) { |
| pw.print("enableReceiver="); |
| pw.print(enableReceiver); |
| pw.print(", bufferSize="); |
| pw.print(bufferSize); |
| pw.print(", requiredGroupsSize="); |
| pw.print(requiredGroups.size()); |
| pw.print(", optionalGroupsSize="); |
| pw.print(optionalGroups.size()); |
| pw.print(", optionalGroupsThreshold="); |
| pw.print(optionalGroupsThreshold); |
| } |
| |
| private void writeToParcel(@NonNull Parcel parcel) { |
| parcel.writeBoolean(enableReceiver); |
| parcel.writeInt(bufferSize); |
| writeGroupsToParcel(requiredGroups, parcel); |
| writeGroupsToParcel(optionalGroups, parcel); |
| parcel.writeInt(optionalGroupsThreshold); |
| } |
| |
| @NonNull |
| private static ContentProtectionOptions createFromParcel(@NonNull Parcel parcel) { |
| boolean enableReceiver = parcel.readBoolean(); |
| int bufferSize = parcel.readInt(); |
| List<List<String>> requiredGroups = createGroupsFromParcel(parcel); |
| List<List<String>> optionalGroups = createGroupsFromParcel(parcel); |
| int optionalGroupsThreshold = parcel.readInt(); |
| return new ContentProtectionOptions( |
| enableReceiver, |
| bufferSize, |
| requiredGroups, |
| optionalGroups, |
| optionalGroupsThreshold); |
| } |
| |
| private static void writeGroupsToParcel( |
| @NonNull List<List<String>> groups, @NonNull Parcel parcel) { |
| parcel.writeInt(groups.size()); |
| groups.forEach(parcel::writeStringList); |
| } |
| |
| @NonNull |
| private static List<List<String>> createGroupsFromParcel(@NonNull Parcel parcel) { |
| int size = parcel.readInt(); |
| return IntStream.range(0, size) |
| .mapToObj(i -> new ArrayList<String>()) |
| .peek(parcel::readStringList) |
| .collect(Collectors.toUnmodifiableList()); |
| } |
| } |
| } |