Remove old blocklist code, prepare for changes (c2fb3a3b) · Commits · e / os / android_frameworks_base

core/java/android/view/contentcapture/ContentCaptureManager.java

+0 −10

Original line number	Diff line number	Diff line
		@@ -363,14 +363,6 @@ public final class ContentCaptureManager {
		public static final String DEVICE_CONFIG_PROPERTY_ENABLE_CONTENT_PROTECTION_RECEIVER =
		"enable_content_protection_receiver";

		/**
		* Sets the size of the app blocklist for the content protection flow.
		*
		* @hide
		*/
		public static final String DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_APPS_BLOCKLIST_SIZE =
		"content_protection_apps_blocklist_size";

		/**
		* Sets the size of the in-memory ring buffer for the content protection flow.
		*
		@@ -440,8 +432,6 @@ public final class ContentCaptureManager {
		/** @hide */
		public static final boolean DEFAULT_ENABLE_CONTENT_PROTECTION_RECEIVER = false;
		/** @hide */
		public static final int DEFAULT_CONTENT_PROTECTION_APPS_BLOCKLIST_SIZE = 5000;
		/** @hide */
		public static final int DEFAULT_CONTENT_PROTECTION_BUFFER_SIZE = 150;
		/** @hide */
		public static final List<List<String>> DEFAULT_CONTENT_PROTECTION_REQUIRED_GROUPS =

services/contentcapture/java/com/android/server/contentcapture/ContentCaptureManagerService.java

+10 −32

Original line number	Diff line number	Diff line
		@@ -103,9 +103,8 @@ import com.android.internal.os.BackgroundThread;
		import com.android.internal.os.IResultReceiver;
		import com.android.internal.util.DumpUtils;
		import com.android.server.LocalServices;
		import com.android.server.contentprotection.ContentProtectionBlocklistManager;
		import com.android.server.contentprotection.ContentProtectionAllowlistManager;
		import com.android.server.contentprotection.ContentProtectionConsentManager;
		import com.android.server.contentprotection.ContentProtectionPackageManager;
		import com.android.server.contentprotection.RemoteContentProtectionService;
		import com.android.server.infra.AbstractMasterSystemService;
		import com.android.server.infra.FrameworkResourcesServiceNameResolver;
		@@ -206,9 +205,6 @@ public class ContentCaptureManagerService extends
		@GuardedBy("mLock")
		boolean mDevCfgEnableContentProtectionReceiver;

		@GuardedBy("mLock")
		int mDevCfgContentProtectionAppsBlocklistSize;

		@GuardedBy("mLock")
		int mDevCfgContentProtectionBufferSize;

		@@ -237,7 +233,7 @@ public class ContentCaptureManagerService extends

		@Nullable private final ComponentName mContentProtectionServiceComponentName;

		@Nullable private final ContentProtectionBlocklistManager mContentProtectionBlocklistManager;
		@Nullable private final ContentProtectionAllowlistManager mContentProtectionAllowlistManager;

		@Nullable private final ContentProtectionConsentManager mContentProtectionConsentManager;

		@@ -287,17 +283,15 @@ public class ContentCaptureManagerService extends
		if (getEnableContentProtectionReceiverLocked()) {
		mContentProtectionServiceComponentName = getContentProtectionServiceComponentName();
		if (mContentProtectionServiceComponentName != null) {
		mContentProtectionBlocklistManager = createContentProtectionBlocklistManager();
		mContentProtectionBlocklistManager.updateBlocklist(
		mDevCfgContentProtectionAppsBlocklistSize);
		mContentProtectionAllowlistManager = createContentProtectionAllowlistManager();
		mContentProtectionConsentManager = createContentProtectionConsentManager();
		} else {
		mContentProtectionBlocklistManager = null;
		mContentProtectionAllowlistManager = null;
		mContentProtectionConsentManager = null;
		}
		} else {
		mContentProtectionServiceComponentName = null;
		mContentProtectionBlocklistManager = null;
		mContentProtectionAllowlistManager = null;
		mContentProtectionConsentManager = null;
		}
		}
		@@ -445,8 +439,6 @@ public class ContentCaptureManagerService extends
		case ContentCaptureManager
		.DEVICE_CONFIG_PROPERTY_ENABLE_CONTENT_PROTECTION_RECEIVER:
		case ContentCaptureManager.DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_BUFFER_SIZE:
		case ContentCaptureManager
		.DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_APPS_BLOCKLIST_SIZE:
		case DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_REQUIRED_GROUPS_CONFIG:
		case DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_OPTIONAL_GROUPS_CONFIG:
		case DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_OPTIONAL_GROUPS_THRESHOLD:
		@@ -502,14 +494,6 @@ public class ContentCaptureManagerService extends
		ContentCaptureManager
		.DEVICE_CONFIG_PROPERTY_ENABLE_CONTENT_PROTECTION_RECEIVER,
		ContentCaptureManager.DEFAULT_ENABLE_CONTENT_PROTECTION_RECEIVER);
		mDevCfgContentProtectionAppsBlocklistSize =
		DeviceConfig.getInt(
		DeviceConfig.NAMESPACE_CONTENT_CAPTURE,
		ContentCaptureManager
		.DEVICE_CONFIG_PROPERTY_CONTENT_PROTECTION_APPS_BLOCKLIST_SIZE,
		ContentCaptureManager.DEFAULT_CONTENT_PROTECTION_APPS_BLOCKLIST_SIZE);
		// mContentProtectionBlocklistManager.updateBlocklist not called on purpose here to keep
		// it immutable at this point
		mDevCfgContentProtectionBufferSize =
		DeviceConfig.getInt(
		DeviceConfig.NAMESPACE_CONTENT_CAPTURE,
		@@ -542,7 +526,7 @@ public class ContentCaptureManagerService extends
		+ mDevCfgMaxBufferSize
		+ ", idleFlush="
		+ mDevCfgIdleFlushingFrequencyMs
		+ ", textFluxh="
		+ ", textFlush="
		+ mDevCfgTextChangeFlushingFrequencyMs
		+ ", logHistory="
		+ mDevCfgLogHistorySize
		@@ -552,8 +536,6 @@ public class ContentCaptureManagerService extends
		+ mDevCfgDisableFlushForViewTreeAppearing
		+ ", enableContentProtectionReceiver="
		+ mDevCfgEnableContentProtectionReceiver
		+ ", contentProtectionAppsBlocklistSize="
		+ mDevCfgContentProtectionAppsBlocklistSize
		+ ", contentProtectionBufferSize="
		+ mDevCfgContentProtectionBufferSize
		+ ", contentProtectionRequiredGroupsConfig="
		@@ -844,9 +826,6 @@ public class ContentCaptureManagerService extends
		pw.print("enableContentProtectionReceiver: ");
		pw.println(mDevCfgEnableContentProtectionReceiver);
		pw.print(prefix2);
		pw.print("contentProtectionAppsBlocklistSize: ");
		pw.println(mDevCfgContentProtectionAppsBlocklistSize);
		pw.print(prefix2);
		pw.print("contentProtectionBufferSize: ");
		pw.println(mDevCfgContentProtectionBufferSize);
		pw.print(prefix2);
		@@ -877,9 +856,8 @@ public class ContentCaptureManagerService extends
		/** @hide */
		@VisibleForTesting(visibility = VisibleForTesting.Visibility.PRIVATE)
		@NonNull
		protected ContentProtectionBlocklistManager createContentProtectionBlocklistManager() {
		return new ContentProtectionBlocklistManager(
		new ContentProtectionPackageManager(getContext()));
		protected ContentProtectionAllowlistManager createContentProtectionAllowlistManager() {
		return new ContentProtectionAllowlistManager();
		}

		/** @hide */
		@@ -1429,7 +1407,7 @@ public class ContentCaptureManagerService extends
		private boolean isContentProtectionReceiverEnabled(
		@UserIdInt int userId, @NonNull String packageName) {
		if (mContentProtectionServiceComponentName == null
		\|\| mContentProtectionBlocklistManager == null
		\|\| mContentProtectionAllowlistManager == null
		\|\| mContentProtectionConsentManager == null) {
		return false;
		}
		@@ -1443,7 +1421,7 @@ public class ContentCaptureManagerService extends
		}
		}
		return mContentProtectionConsentManager.isConsentGranted(userId)
		&& mContentProtectionBlocklistManager.isAllowed(packageName);
		&& mContentProtectionAllowlistManager.isAllowed(packageName);
		}
		}

services/contentcapture/java/com/android/server/contentprotection/ContentProtectionAllowlistManager.java

0 → 100644

+38 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.contentprotection;

		import android.annotation.NonNull;
		import android.util.Slog;

		/**
		* Manages whether the content protection is enabled for an app using a allowlist.
		*
		* @hide
		*/
		public class ContentProtectionAllowlistManager {

		private static final String TAG = "ContentProtectionAllowlistManager";

		public ContentProtectionAllowlistManager() {}

		/** Returns true if the package is allowed. */
		public boolean isAllowed(@NonNull String packageName) {
		Slog.v(TAG, packageName);
		return false;
		}
		}

services/contentcapture/java/com/android/server/contentprotection/ContentProtectionBlocklistManager.java

deleted100644 → 0

+0 −111

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.contentprotection;

		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.content.pm.PackageInfo;
		import android.util.Slog;

		import com.android.internal.annotations.VisibleForTesting;

		import java.io.BufferedReader;
		import java.io.FileReader;
		import java.util.Collections;
		import java.util.List;
		import java.util.Set;
		import java.util.stream.Collectors;

		/**
		* Manages whether the content protection is enabled for an app using a blocklist.
		*
		* @hide
		*/
		public class ContentProtectionBlocklistManager {

		private static final String TAG = "ContentProtectionBlocklistManager";

		private static final String PACKAGE_NAME_BLOCKLIST_FILENAME =
		"/product/etc/res/raw/content_protection/package_name_blocklist.txt";

		@NonNull private final ContentProtectionPackageManager mContentProtectionPackageManager;

		@Nullable private Set<String> mPackageNameBlocklist;

		public ContentProtectionBlocklistManager(
		@NonNull ContentProtectionPackageManager contentProtectionPackageManager) {
		mContentProtectionPackageManager = contentProtectionPackageManager;
		}

		public boolean isAllowed(@NonNull String packageName) {
		if (mPackageNameBlocklist == null) {
		// List not loaded or failed to load, don't run on anything
		return false;
		}
		if (mPackageNameBlocklist.contains(packageName)) {
		return false;
		}
		PackageInfo packageInfo = mContentProtectionPackageManager.getPackageInfo(packageName);
		if (packageInfo == null) {
		return false;
		}
		if (!mContentProtectionPackageManager.hasRequestedInternetPermissions(packageInfo)) {
		return false;
		}
		if (mContentProtectionPackageManager.isSystemApp(packageInfo)) {
		return false;
		}
		if (mContentProtectionPackageManager.isUpdatedSystemApp(packageInfo)) {
		return false;
		}
		return true;
		}

		public void updateBlocklist(int blocklistSize) {
		Slog.i(TAG, "Blocklist size updating to: " + blocklistSize);
		mPackageNameBlocklist = readPackageNameBlocklist(blocklistSize);
		}

		@Nullable
		private Set<String> readPackageNameBlocklist(int blocklistSize) {
		if (blocklistSize <= 0) {
		// Explicitly requested an empty blocklist
		return Collections.emptySet();
		}
		List<String> lines = readLinesFromRawFile(PACKAGE_NAME_BLOCKLIST_FILENAME);
		if (lines == null) {
		return null;
		}
		return lines.stream().limit(blocklistSize).collect(Collectors.toSet());
		}

		@VisibleForTesting
		@Nullable
		protected List<String> readLinesFromRawFile(@NonNull String filename) {
		try (FileReader fileReader = new FileReader(filename);
		BufferedReader bufferedReader = new BufferedReader(fileReader)) {
		return bufferedReader
		.lines()
		.map(line -> line.trim())
		.filter(line -> !line.isBlank())
		.collect(Collectors.toList());
		} catch (Exception ex) {
		Slog.e(TAG, "Failed to read: " + filename, ex);
		return null;
		}
		}
		}

services/contentcapture/java/com/android/server/contentprotection/ContentProtectionPackageManager.java

deleted100644 → 0

+0 −82

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2023 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.contentprotection;

		import android.Manifest;
		import android.annotation.NonNull;
		import android.annotation.Nullable;
		import android.content.Context;
		import android.content.pm.ApplicationInfo;
		import android.content.pm.PackageInfo;
		import android.content.pm.PackageManager;
		import android.content.pm.PackageManager.NameNotFoundException;
		import android.content.pm.PackageManager.PackageInfoFlags;
		import android.util.Slog;

		import java.util.Arrays;

		/**
		* Basic package manager for content protection using content capture.
		*
		* @hide
		*/
		public class ContentProtectionPackageManager {

		private static final String TAG = "ContentProtectionPackageManager";

		private static final PackageInfoFlags PACKAGE_INFO_FLAGS =
		PackageInfoFlags.of(PackageManager.GET_PERMISSIONS);

		@NonNull private final PackageManager mPackageManager;

		public ContentProtectionPackageManager(@NonNull Context context) {
		mPackageManager = context.getPackageManager();
		}

		@Nullable
		public PackageInfo getPackageInfo(@NonNull String packageName) {
		try {
		return mPackageManager.getPackageInfo(packageName, PACKAGE_INFO_FLAGS);
		} catch (NameNotFoundException ex) {
		Slog.w(TAG, "Package info not found for: " + packageName, ex);
		return null;
		}
		}

		public boolean isSystemApp(@NonNull PackageInfo packageInfo) {
		return packageInfo.applicationInfo != null && isSystemApp(packageInfo.applicationInfo);
		}

		private boolean isSystemApp(@NonNull ApplicationInfo applicationInfo) {
		return (applicationInfo.flags & ApplicationInfo.FLAG_SYSTEM) != 0;
		}

		public boolean isUpdatedSystemApp(@NonNull PackageInfo packageInfo) {
		return packageInfo.applicationInfo != null
		&& isUpdatedSystemApp(packageInfo.applicationInfo);
		}

		private boolean isUpdatedSystemApp(@NonNull ApplicationInfo applicationInfo) {
		return (applicationInfo.flags & ApplicationInfo.FLAG_UPDATED_SYSTEM_APP) != 0;
		}

		public boolean hasRequestedInternetPermissions(@NonNull PackageInfo packageInfo) {
		return packageInfo.requestedPermissions != null
		&& Arrays.asList(packageInfo.requestedPermissions)
		.contains(Manifest.permission.INTERNET);
		}
		}