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1.前言#xff1a;
最近在rom定制化开发时#xff0c;测试提了一个bug#xff0c;在浏览器或者文本里面使用剪贴板复制成功后会有一个Toast提示#xff0c;这种体验不是很好#xff0c;因为每次复制成功都有一个提示
最近在rom定制化开发时测试提了一个bug在浏览器或者文本里面使用剪贴板复制成功后会有一个Toast提示这种体验不是很好因为每次复制成功都有一个提示感觉很突兀修改很简单去掉toast即可所以这里记录一下过程.
2.问题现象截图如下 3.日志分析
通过logcat日志分析发现在剪切板服务类中有打印toast提示的内容问题复现了接下来就好办多了根据日志找到剪切板服务类. 4.源码路径
frameworks/base/services/core/com/android/server/ClipboardService
/** Copyright (C) 2008 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.clipboard;import static android.app.ActivityManagerInternal.ALLOW_FULL_ONLY;import android.Manifest;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.UserIdInt;
import android.annotation.WorkerThread;
import android.app.ActivityManagerInternal;
import android.app.AppGlobals;
import android.app.AppOpsManager;
import android.app.IUriGrantsManager;
import android.app.KeyguardManager;
import android.app.UriGrantsManager;
import android.content.ClipData;
import android.content.ClipDescription;
import android.content.ClipboardManager;
import android.content.ComponentName;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.Context;
import android.content.IClipboard;
import android.content.IOnPrimaryClipChangedListener;
import android.content.Intent;
import android.content.pm.IPackageManager;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.UserInfo;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.IUserManager;
import android.os.Parcel;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.DeviceConfig;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.ArrayMap;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.view.autofill.AutofillManagerInternal;
import android.view.textclassifier.TextClassificationContext;
import android.view.textclassifier.TextClassificationManager;
import android.view.textclassifier.TextClassifier;
import android.view.textclassifier.TextClassifierEvent;
import android.view.textclassifier.TextLinks;
import android.widget.Toast;import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.server.LocalServices;
import com.android.server.SystemService;
import com.android.server.UiThread;
import com.android.server.contentcapture.ContentCaptureManagerInternal;
import com.android.server.uri.UriGrantsManagerInternal;
import com.android.server.wm.WindowManagerInternal;import java.util.HashSet;
import java.util.List;
import java.util.function.Consumer;/*** Implementation of the clipboard for copy and paste.* p* Caution: exception for clipboard data and isInternalSysWindowAppWithWindowFocus, any of data* is accessed by userId or uid should be in * the try segment between* Binder.clearCallingIdentity and Binder.restoreCallingIdentity.* /p*/
public class ClipboardService extends SystemService {private static final String TAG ClipboardService;private static final boolean IS_EMULATOR SystemProperties.getBoolean(ro.boot.qemu, false);// DeviceConfig propertiesprivate static final String PROPERTY_MAX_CLASSIFICATION_LENGTH max_classification_length;private static final int DEFAULT_MAX_CLASSIFICATION_LENGTH 400;private final ActivityManagerInternal mAmInternal;private final IUriGrantsManager mUgm;private final UriGrantsManagerInternal mUgmInternal;private final WindowManagerInternal mWm;private final IUserManager mUm;private final PackageManager mPm;private final AppOpsManager mAppOps;private final ContentCaptureManagerInternal mContentCaptureInternal;private final AutofillManagerInternal mAutofillInternal;private final IBinder mPermissionOwner;private final ConsumerClipData mEmulatorClipboardMonitor;private final Handler mWorkerHandler;GuardedBy(mLock)private final SparseArrayPerUserClipboard mClipboards new SparseArray();GuardedBy(mLock)private boolean mShowAccessNotifications ClipboardManager.DEVICE_CONFIG_DEFAULT_SHOW_ACCESS_NOTIFICATIONS;GuardedBy(mLock)private int mMaxClassificationLength DEFAULT_MAX_CLASSIFICATION_LENGTH;private final Object mLock new Object();/*** Instantiates the clipboard.*/public ClipboardService(Context context) {super(context);mAmInternal LocalServices.getService(ActivityManagerInternal.class);mUgm UriGrantsManager.getService();mUgmInternal LocalServices.getService(UriGrantsManagerInternal.class);mWm LocalServices.getService(WindowManagerInternal.class);mPm getContext().getPackageManager();mUm (IUserManager) ServiceManager.getService(Context.USER_SERVICE);mAppOps (AppOpsManager) getContext().getSystemService(Context.APP_OPS_SERVICE);mContentCaptureInternal LocalServices.getService(ContentCaptureManagerInternal.class);mAutofillInternal LocalServices.getService(AutofillManagerInternal.class);final IBinder permOwner mUgmInternal.newUriPermissionOwner(clipboard);mPermissionOwner permOwner;if (IS_EMULATOR) {mEmulatorClipboardMonitor new EmulatorClipboardMonitor((clip) - {synchronized (mLock) {setPrimaryClipInternalLocked(getClipboardLocked(0), clip,android.os.Process.SYSTEM_UID, null);}});} else {mEmulatorClipboardMonitor (clip) - {};}updateConfig();DeviceConfig.addOnPropertiesChangedListener(DeviceConfig.NAMESPACE_CLIPBOARD,getContext().getMainExecutor(), properties - updateConfig());HandlerThread workerThread new HandlerThread(TAG);workerThread.start();mWorkerHandler workerThread.getThreadHandler();}Overridepublic void onStart() {publishBinderService(Context.CLIPBOARD_SERVICE, new ClipboardImpl());}Overridepublic void onUserStopped(NonNull TargetUser user) {synchronized (mLock) {mClipboards.remove(user.getUserIdentifier());}}private void updateConfig() {synchronized (mLock) {mShowAccessNotifications DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_CLIPBOARD,ClipboardManager.DEVICE_CONFIG_SHOW_ACCESS_NOTIFICATIONS,ClipboardManager.DEVICE_CONFIG_DEFAULT_SHOW_ACCESS_NOTIFICATIONS);mMaxClassificationLength DeviceConfig.getInt(DeviceConfig.NAMESPACE_CLIPBOARD,PROPERTY_MAX_CLASSIFICATION_LENGTH, DEFAULT_MAX_CLASSIFICATION_LENGTH);}}private class ListenerInfo {final int mUid;final String mPackageName;ListenerInfo(int uid, String packageName) {mUid uid;mPackageName packageName;}}private class PerUserClipboard {final int userId;final RemoteCallbackListIOnPrimaryClipChangedListener primaryClipListeners new RemoteCallbackListIOnPrimaryClipChangedListener();/** Current primary clip. */ClipData primaryClip;/** UID that set {link #primaryClip}. */int primaryClipUid android.os.Process.NOBODY_UID;/** Package of the app that set {link #primaryClip}. */String mPrimaryClipPackage;/** Uids that have already triggered a toast notification for {link #primaryClip} */final SparseBooleanArray mNotifiedUids new SparseBooleanArray();/*** Uids that have already triggered a notification to text classifier for* {link #primaryClip}.*/final SparseBooleanArray mNotifiedTextClassifierUids new SparseBooleanArray();final HashSetString activePermissionOwners new HashSetString();/** The text classifier session that is used to annotate the text in the primary clip. */TextClassifier mTextClassifier;PerUserClipboard(int userId) {this.userId userId;}}/*** To check if the application has granted the INTERNAL_SYSTEM_WINDOW permission and window* focus.* p* All of applications granted INTERNAL_SYSTEM_WINDOW has the risk to leak clip information to* the other user because INTERNAL_SYSTEM_WINDOW is signature level. i.e. platform key. Because* some of applications have both of INTERNAL_SYSTEM_WINDOW and INTERACT_ACROSS_USERS_FULL at* the same time, that means they show the same window to all of users.* /pp* Unfortunately, all of applications with INTERNAL_SYSTEM_WINDOW starts very early and then* the real window show is belong to user 0 rather user X. The result of* WindowManager.isUidFocused checking user X window is false.* /p* return true if the app granted INTERNAL_SYSTEM_WINDOW permission.*/private boolean isInternalSysWindowAppWithWindowFocus(String callingPackage) {// Shell can access the clipboard for testing purposes.if (mPm.checkPermission(Manifest.permission.INTERNAL_SYSTEM_WINDOW,callingPackage) PackageManager.PERMISSION_GRANTED) {if (mWm.isUidFocused(Binder.getCallingUid())) {return true;}}return false;}/*** To get the validate current userId.* p* The intending userId needs to be validated by ActivityManagerInternal.handleIncomingUser.* To check if the uid of the process have the permission to run as the userId.* e.x. INTERACT_ACROSS_USERS_FULL or INTERACT_ACROSS_USERS permission granted.* /p* p* The application with the granted INTERNAL_SYSTEM_WINDOW permission should run as the output* of ActivityManagerInternal.handleIncomingUser rather the userId of Binder.getCAllingUid().* To use the userId of Binder.getCallingUid() is the root cause that leaks the information* comes from user 0 to user X.* /p** param packageName the package name of the calling side* param userId the userId passed by the calling side* return return the intending userId that has been validated by ActivityManagerInternal.*/UserIdIntprivate int getIntendingUserId(String packageName, UserIdInt int userId) {final int callingUid Binder.getCallingUid();final int callingUserId UserHandle.getUserId(callingUid);if (!UserManager.supportsMultipleUsers() || callingUserId userId) {return callingUserId;}int intendingUserId callingUserId;intendingUserId mAmInternal.handleIncomingUser(Binder.getCallingPid(),Binder.getCallingUid(), userId, false /* allow all */, ALLOW_FULL_ONLY,checkClipboardServiceCallingUser, packageName);return intendingUserId;}/*** To get the current running uid who is intend to run as.* In ording to distinguish the nameing and reducing the confusing names, the client client* side pass userId that is intend to run as,* return return IntentingUid validated intenting userId * UserHandle.getAppId(Binder.getCallingUid())*/private int getIntendingUid(String packageName, UserIdInt int userId) {return UserHandle.getUid(getIntendingUserId(packageName, userId),UserHandle.getAppId(Binder.getCallingUid()));}/*** To handle the difference between userId and intendingUserId, uid and intendingUid.** userId means that comes from the calling side and should be validated by* ActivityManagerInternal.handleIncomingUser.* After validation of ActivityManagerInternal.handleIncomingUser, the userId is called* intendingUserId and the uid is called intendingUid.*/private class ClipboardImpl extends IClipboard.Stub {Overridepublic boolean onTransact(int code, Parcel data, Parcel reply, int flags)throws RemoteException {try {return super.onTransact(code, data, reply, flags);} catch (RuntimeException e) {if (!(e instanceof SecurityException)) {Slog.wtf(clipboard, Exception: , e);}throw e;}}Overridepublic void setPrimaryClip(ClipData clip, String callingPackage, UserIdInt int userId) {checkAndSetPrimaryClip(clip, callingPackage, userId, callingPackage);}Overridepublic void setPrimaryClipAsPackage(ClipData clip, String callingPackage, UserIdInt int userId, String sourcePackage) {getContext().enforceCallingOrSelfPermission(Manifest.permission.SET_CLIP_SOURCE,Requires SET_CLIP_SOURCE permission);checkAndSetPrimaryClip(clip, callingPackage, userId, sourcePackage);}private void checkAndSetPrimaryClip(ClipData clip, String callingPackage, UserIdInt int userId, String sourcePackage) {if (clip null || clip.getItemCount() 0) {throw new IllegalArgumentException(No items);}final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_WRITE_CLIPBOARD, callingPackage,intendingUid, intendingUserId)) {return;}checkDataOwner(clip, intendingUid);synchronized (mLock) {setPrimaryClipInternalLocked(clip, intendingUid, sourcePackage);}}Overridepublic void clearPrimaryClip(String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_WRITE_CLIPBOARD, callingPackage,intendingUid, intendingUserId)) {return;}synchronized (mLock) {setPrimaryClipInternalLocked(null, intendingUid, callingPackage);}}Overridepublic ClipData getPrimaryClip(String pkg, UserIdInt int userId) {final int intendingUid getIntendingUid(pkg, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, pkg,intendingUid, intendingUserId)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {try {addActiveOwnerLocked(intendingUid, pkg);} catch (SecurityException e) {// Permission could not be granted - URI may be invalidSlog.i(TAG, Could not grant permission to primary clip. Clearing clipboard.);setPrimaryClipInternalLocked(null, intendingUid, pkg);return null;}PerUserClipboard clipboard getClipboardLocked(intendingUserId);showAccessNotificationLocked(pkg, intendingUid, intendingUserId, clipboard);notifyTextClassifierLocked(clipboard, pkg, intendingUid);return clipboard.primaryClip;}}Overridepublic ClipDescription getPrimaryClipDescription(String callingPackage,UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);return clipboard.primaryClip ! null? clipboard.primaryClip.getDescription() : null;}}Overridepublic boolean hasPrimaryClip(String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return false;}synchronized (mLock) {return getClipboardLocked(intendingUserId).primaryClip ! null;}}Overridepublic void addPrimaryClipChangedListener(IOnPrimaryClipChangedListener listener,String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);synchronized (mLock) {getClipboardLocked(intendingUserId).primaryClipListeners.register(listener,new ListenerInfo(intendingUid, callingPackage));}}Overridepublic void removePrimaryClipChangedListener(IOnPrimaryClipChangedListener listener,String callingPackage, UserIdInt int userId) {final int intendingUserId getIntendingUserId(callingPackage, userId);synchronized (mLock) {getClipboardLocked(intendingUserId).primaryClipListeners.unregister(listener);}}Overridepublic boolean hasClipboardText(String callingPackage, int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return false;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);if (clipboard.primaryClip ! null) {CharSequence text clipboard.primaryClip.getItemAt(0).getText();return text ! null text.length() 0;}return false;}}Overridepublic String getPrimaryClipSource(String callingPackage, int userId) {getContext().enforceCallingOrSelfPermission(Manifest.permission.SET_CLIP_SOURCE,Requires SET_CLIP_SOURCE permission);final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);if (clipboard.primaryClip ! null) {return clipboard.mPrimaryClipPackage;}return null;}}};GuardedBy(mLock)private PerUserClipboard getClipboardLocked(UserIdInt int userId) {PerUserClipboard puc mClipboards.get(userId);if (puc null) {puc new PerUserClipboard(userId);mClipboards.put(userId, puc);}return puc;}ListUserInfo getRelatedProfiles(UserIdInt int userId) {final ListUserInfo related;final long origId Binder.clearCallingIdentity();try {related mUm.getProfiles(userId, true);} catch (RemoteException e) {Slog.e(TAG, Remote Exception calling UserManager: e);return null;} finally{Binder.restoreCallingIdentity(origId);}return related;}/** Check if the user has the given restriction set. Default to true if error occured during* calling UserManager, so it fails safe.*/private boolean hasRestriction(String restriction, int userId) {try {return mUm.hasUserRestriction(restriction, userId);} catch (RemoteException e) {Slog.e(TAG, Remote Exception calling UserManager.getUserRestrictions: , e);// Fails safereturn true;}}void setPrimaryClipInternal(Nullable ClipData clip, int uid) {synchronized (mLock) {setPrimaryClipInternalLocked(clip, uid, null);}}GuardedBy(mLock)private void setPrimaryClipInternalLocked(Nullable ClipData clip, int uid, Nullable String sourcePackage) {mEmulatorClipboardMonitor.accept(clip);final int userId UserHandle.getUserId(uid);if (clip ! null) {startClassificationLocked(clip, userId);}// Update this usersetPrimaryClipInternalLocked(getClipboardLocked(userId), clip, uid, sourcePackage);// Update related usersListUserInfo related getRelatedProfiles(userId);if (related ! null) {int size related.size();if (size 1) { // Related profiles list include the current profile.final boolean canCopy !hasRestriction(UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE, userId);// Copy clip data to related users if allowed. If disallowed, then remove// primary clip in related users to prevent pasting stale content.if (!canCopy) {clip null;} else if (clip null) {// do nothing for canCopy true and clip null case// To prevent from NPE happen in new ClipData(clip) when run// android.content.cts.ClipboardManagerTest#testClearPrimaryClip} else {// We want to fix the uris of the related users clip without changing the// uris of the current users clip.// So, copy the ClipData, and then copy all the items, so that nothing// is shared in memory.clip new ClipData(clip);for (int i clip.getItemCount() - 1; i 0; i--) {clip.setItemAt(i, new ClipData.Item(clip.getItemAt(i)));}clip.fixUrisLight(userId);}for (int i 0; i size; i) {int id related.get(i).id;if (id ! userId) {final boolean canCopyIntoProfile !hasRestriction(UserManager.DISALLOW_SHARE_INTO_MANAGED_PROFILE, id);if (canCopyIntoProfile) {setPrimaryClipInternalLocked(getClipboardLocked(id), clip, uid, sourcePackage);}}}}}}void setPrimaryClipInternal(PerUserClipboard clipboard, Nullable ClipData clip,int uid) {synchronized (mLock) {setPrimaryClipInternalLocked(clipboard, clip, uid, null);}}GuardedBy(mLock)private void setPrimaryClipInternalLocked(PerUserClipboard clipboard, Nullable ClipData clip,int uid, Nullable String sourcePackage) {revokeUris(clipboard);clipboard.activePermissionOwners.clear();if (clip null clipboard.primaryClip null) {return;}clipboard.primaryClip clip;clipboard.mNotifiedUids.clear();clipboard.mNotifiedTextClassifierUids.clear();if (clip ! null) {clipboard.primaryClipUid uid;clipboard.mPrimaryClipPackage sourcePackage;} else {clipboard.primaryClipUid android.os.Process.NOBODY_UID;clipboard.mPrimaryClipPackage null;}if (clip ! null) {final ClipDescription description clip.getDescription();if (description ! null) {description.setTimestamp(System.currentTimeMillis());}}sendClipChangedBroadcast(clipboard);}private void sendClipChangedBroadcast(PerUserClipboard clipboard) {final long ident Binder.clearCallingIdentity();final int n clipboard.primaryClipListeners.beginBroadcast();try {for (int i 0; i n; i) {try {ListenerInfo li (ListenerInfo)clipboard.primaryClipListeners.getBroadcastCookie(i);if (clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, li.mPackageName,li.mUid, UserHandle.getUserId(li.mUid))) {clipboard.primaryClipListeners.getBroadcastItem(i).dispatchPrimaryClipChanged();}} catch (RemoteException e) {// The RemoteCallbackList will take care of removing// the dead object for us.}}} finally {clipboard.primaryClipListeners.finishBroadcast();Binder.restoreCallingIdentity(ident);}}GuardedBy(mLock)private void startClassificationLocked(NonNull ClipData clip, UserIdInt int userId) {CharSequence text (clip.getItemCount() 0) ? null : clip.getItemAt(0).getText();if (TextUtils.isEmpty(text) || text.length() mMaxClassificationLength) {clip.getDescription().setClassificationStatus(ClipDescription.CLASSIFICATION_NOT_PERFORMED);return;}TextClassifier classifier;final long ident Binder.clearCallingIdentity();try {classifier createTextClassificationManagerAsUser(userId).createTextClassificationSession(new TextClassificationContext.Builder(getContext().getPackageName(),TextClassifier.WIDGET_TYPE_CLIPBOARD).build());} finally {Binder.restoreCallingIdentity(ident);}if (text.length() classifier.getMaxGenerateLinksTextLength()) {clip.getDescription().setClassificationStatus(ClipDescription.CLASSIFICATION_NOT_PERFORMED);return;}mWorkerHandler.post(() - doClassification(text, clip, classifier, userId));}WorkerThreadprivate void doClassification(CharSequence text, ClipData clip, TextClassifier classifier, UserIdInt int userId) {TextLinks.Request request new TextLinks.Request.Builder(text).build();TextLinks links classifier.generateLinks(request);// Find the highest confidence for each entity in the text.ArrayMapString, Float confidences new ArrayMap();for (TextLinks.TextLink link : links.getLinks()) {for (int i 0; i link.getEntityCount(); i) {String entity link.getEntity(i);float conf link.getConfidenceScore(entity);if (conf confidences.getOrDefault(entity, 0f)) {confidences.put(entity, conf);}}}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(userId);if (clipboard.primaryClip clip) {applyClassificationAndSendBroadcastLocked(clipboard, confidences, links, classifier);// Also apply to related profiles if neededListUserInfo related getRelatedProfiles(userId);if (related ! null) {int size related.size();for (int i 0; i size; i) {int id related.get(i).id;if (id ! userId) {final boolean canCopyIntoProfile !hasRestriction(UserManager.DISALLOW_SHARE_INTO_MANAGED_PROFILE, id);if (canCopyIntoProfile) {PerUserClipboard relatedClipboard getClipboardLocked(id);if (hasTextLocked(relatedClipboard, text)) {applyClassificationAndSendBroadcastLocked(relatedClipboard, confidences, links, classifier);}}}}}}}}GuardedBy(mLock)private void applyClassificationAndSendBroadcastLocked(PerUserClipboard clipboard, ArrayMapString, Float confidences, TextLinks links,TextClassifier classifier) {clipboard.mTextClassifier classifier;clipboard.primaryClip.getDescription().setConfidenceScores(confidences);if (!links.getLinks().isEmpty()) {clipboard.primaryClip.getItemAt(0).setTextLinks(links);}sendClipChangedBroadcast(clipboard);}GuardedBy(mLock)private boolean hasTextLocked(PerUserClipboard clipboard, NonNull CharSequence text) {return clipboard.primaryClip ! null clipboard.primaryClip.getItemCount() 0 text.equals(clipboard.primaryClip.getItemAt(0).getText());}private boolean isDeviceLocked(UserIdInt int userId) {final long token Binder.clearCallingIdentity();try {final KeyguardManager keyguardManager getContext().getSystemService(KeyguardManager.class);return keyguardManager ! null keyguardManager.isDeviceLocked(userId);} finally {Binder.restoreCallingIdentity(token);}}private void checkUriOwner(Uri uri, int sourceUid) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {// This will throw SecurityException if caller cant grantmUgmInternal.checkGrantUriPermission(sourceUid, null,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)));} finally {Binder.restoreCallingIdentity(ident);}}private void checkItemOwner(ClipData.Item item, int uid) {if (item.getUri() ! null) {checkUriOwner(item.getUri(), uid);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {checkUriOwner(intent.getData(), uid);}}private void checkDataOwner(ClipData data, int uid) {final int N data.getItemCount();for (int i0; iN; i) {checkItemOwner(data.getItemAt(i), uid);}}private void grantUriPermission(Uri uri, int sourceUid, String targetPkg,int targetUserId) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {mUgm.grantUriPermissionFromOwner(mPermissionOwner, sourceUid, targetPkg,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)),targetUserId);} catch (RemoteException ignored) {// Ignored because were in same process} finally {Binder.restoreCallingIdentity(ident);}}private void grantItemPermission(ClipData.Item item, int sourceUid, String targetPkg,int targetUserId) {if (item.getUri() ! null) {grantUriPermission(item.getUri(), sourceUid, targetPkg, targetUserId);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {grantUriPermission(intent.getData(), sourceUid, targetPkg, targetUserId);}}GuardedBy(mLock)private void addActiveOwnerLocked(int uid, String pkg) {final IPackageManager pm AppGlobals.getPackageManager();final int targetUserHandle UserHandle.getCallingUserId();final long oldIdentity Binder.clearCallingIdentity();try {PackageInfo pi pm.getPackageInfo(pkg, 0, targetUserHandle);if (pi null) {throw new IllegalArgumentException(Unknown package pkg);}if (!UserHandle.isSameApp(pi.applicationInfo.uid, uid)) {throw new SecurityException(Calling uid uid does not own package pkg);}} catch (RemoteException e) {// Cant happen; the package manager is in the same process} finally {Binder.restoreCallingIdentity(oldIdentity);}PerUserClipboard clipboard getClipboardLocked(UserHandle.getUserId(uid));if (clipboard.primaryClip ! null !clipboard.activePermissionOwners.contains(pkg)) {final int N clipboard.primaryClip.getItemCount();for (int i0; iN; i) {grantItemPermission(clipboard.primaryClip.getItemAt(i), clipboard.primaryClipUid,pkg, UserHandle.getUserId(uid));}clipboard.activePermissionOwners.add(pkg);}}private void revokeUriPermission(Uri uri, int sourceUid) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {mUgmInternal.revokeUriPermissionFromOwner(mPermissionOwner,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)));} finally {Binder.restoreCallingIdentity(ident);}}private void revokeItemPermission(ClipData.Item item, int sourceUid) {if (item.getUri() ! null) {revokeUriPermission(item.getUri(), sourceUid);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {revokeUriPermission(intent.getData(), sourceUid);}}private void revokeUris(PerUserClipboard clipboard) {if (clipboard.primaryClip null) {return;}final int N clipboard.primaryClip.getItemCount();for (int i0; iN; i) {revokeItemPermission(clipboard.primaryClip.getItemAt(i), clipboard.primaryClipUid);}}private boolean clipboardAccessAllowed(int op, String callingPackage, int uid,UserIdInt int userId) {return clipboardAccessAllowed(op, callingPackage, uid, userId, true);}private boolean clipboardAccessAllowed(int op, String callingPackage, int uid,UserIdInt int userId, boolean shouldNoteOp) {boolean allowed;// First, verify package ownership to ensure use below is safe.mAppOps.checkPackage(uid, callingPackage);// Shell can access the clipboard for testing purposes.if (mPm.checkPermission(android.Manifest.permission.READ_CLIPBOARD_IN_BACKGROUND,callingPackage) PackageManager.PERMISSION_GRANTED) {allowed true;} else {// The default IME is always allowed to access the clipboard.allowed isDefaultIme(userId, callingPackage);}switch (op) {case AppOpsManager.OP_READ_CLIPBOARD:// Clipboard can only be read by applications with focus..// or the application have the INTERNAL_SYSTEM_WINDOW and INTERACT_ACROSS_USERS_FULL// at the same time. e.x. SystemUI. It needs to check the window focus of// Binder.getCallingUid(). Without checking, the user X cant copy any thing from// INTERNAL_SYSTEM_WINDOW to the other applications.if (!allowed) {allowed mWm.isUidFocused(uid)|| isInternalSysWindowAppWithWindowFocus(callingPackage);}if (!allowed mContentCaptureInternal ! null) {// ...or the Content Capture Service// The uid parameter of mContentCaptureInternal.isContentCaptureServiceForUser// is used to check if the uid has the permission BIND_CONTENT_CAPTURE_SERVICE.// if the application has the permission, let it to access users clipboard.// To passed synthesized uid user#10_app#systemui may not tell the real uid.// userId must pass intending userId. i.e. user#10.allowed mContentCaptureInternal.isContentCaptureServiceForUser(uid, userId);}if (!allowed mAutofillInternal ! null) {// ...or the Augmented Autofill Service// The uid parameter of mAutofillInternal.isAugmentedAutofillServiceForUser// is used to check if the uid has the permission BIND_AUTOFILL_SERVICE.// if the application has the permission, let it to access users clipboard.// To passed synthesized uid user#10_app#systemui may not tell the real uid.// userId must pass intending userId. i.e. user#10.allowed mAutofillInternal.isAugmentedAutofillServiceForUser(uid, userId);}break;case AppOpsManager.OP_WRITE_CLIPBOARD:// Writing is allowed without focus.allowed true;break;default:throw new IllegalArgumentException(Unknown clipboard appop op);}if (!allowed) {Slog.e(TAG, Denying clipboard access to callingPackage , application is not in focus nor is it a system service for user userId);return false;}// Finally, check the app op.int appOpsResult;if (shouldNoteOp) {appOpsResult mAppOps.noteOp(op, uid, callingPackage);} else {appOpsResult mAppOps.checkOp(op, uid, callingPackage);}return appOpsResult AppOpsManager.MODE_ALLOWED;}private boolean isDefaultIme(int userId, String packageName) {String defaultIme Settings.Secure.getStringForUser(getContext().getContentResolver(),Settings.Secure.DEFAULT_INPUT_METHOD, userId);if (!TextUtils.isEmpty(defaultIme)) {final String imePkg ComponentName.unflattenFromString(defaultIme).getPackageName();return imePkg.equals(packageName);}return false;}/*** Shows a toast to inform the user that an app has accessed the clipboard. This is only done if* the setting is enabled, and if the accessing app is not the source of the data and is not the* IME, the content capture service, or the autofill service. The notification is also only* shown once per clip for each app.*/GuardedBy(mLock)private void showAccessNotificationLocked(String callingPackage, int uid, UserIdInt int userId,PerUserClipboard clipboard) {if (clipboard.primaryClip null) {return;}if (Settings.Secure.getInt(getContext().getContentResolver(),Settings.Secure.CLIPBOARD_SHOW_ACCESS_NOTIFICATIONS,(mShowAccessNotifications ? 1 : 0)) 0) {return;}// Dont notify if the app accessing the clipboard is the same as the current owner.if (UserHandle.isSameApp(uid, clipboard.primaryClipUid)) {return;}// Exclude special cases: IME, ContentCapture, Autofill.if (isDefaultIme(userId, callingPackage)) {return;}if (mContentCaptureInternal ! null mContentCaptureInternal.isContentCaptureServiceForUser(uid, userId)) {return;}if (mAutofillInternal ! null mAutofillInternal.isAugmentedAutofillServiceForUser(uid, userId)) {return;}// Dont notify if already notified for this uid and clip.if (clipboard.mNotifiedUids.get(uid)) {return;}clipboard.mNotifiedUids.put(uid, true);Binder.withCleanCallingIdentity(() - {try {CharSequence callingAppLabel mPm.getApplicationLabel(mPm.getApplicationInfoAsUser(callingPackage, 0, userId));String message getContext().getString(R.string.pasted_from_clipboard, callingAppLabel);Slog.i(TAG, message);Toast.makeText(getContext(), UiThread.get().getLooper(), message, Toast.LENGTH_SHORT).show(); } catch (PackageManager.NameNotFoundException e) {// do nothing}});}/*** Returns true if the provided {link ClipData} represents a single piece of text. That is, if* there is only on {link ClipData.Item}, and that item contains a non-empty piece of text and* no URI or Intent. Note that HTML may be provided along with text so the presence of* HtmlText in the clip does not prevent this method returning true.*/private static boolean isText(NonNull ClipData data) {if (data.getItemCount() 1) {return false;}ClipData.Item item data.getItemAt(0);return !TextUtils.isEmpty(item.getText()) item.getUri() null item.getIntent() null;}/** Potentially notifies the text classifier that an app is accessing a text clip. */GuardedBy(mLock)private void notifyTextClassifierLocked(PerUserClipboard clipboard, String callingPackage, int callingUid) {if (clipboard.primaryClip null) {return;}ClipData.Item item clipboard.primaryClip.getItemAt(0);if (item null) {return;}if (!isText(clipboard.primaryClip)) {return;}TextClassifier textClassifier clipboard.mTextClassifier;// Dont notify text classifier if we havent used it to annotate the text in the clip.if (textClassifier null) {return;}// Dont notify text classifier if the app reading the clipboard does not have the focus.if (!mWm.isUidFocused(callingUid)) {return;}// Dont notify text classifier again if already notified for this uid and clip.if (clipboard.mNotifiedTextClassifierUids.get(callingUid)) {return;}clipboard.mNotifiedTextClassifierUids.put(callingUid, true);Binder.withCleanCallingIdentity(() - {TextClassifierEvent.TextLinkifyEvent pasteEvent new TextClassifierEvent.TextLinkifyEvent.Builder(TextClassifierEvent.TYPE_READ_CLIPBOARD).setEventContext(new TextClassificationContext.Builder(callingPackage, TextClassifier.WIDGET_TYPE_CLIPBOARD).build()).setExtras(Bundle.forPair(source_package, clipboard.mPrimaryClipPackage)).build();textClassifier.onTextClassifierEvent(pasteEvent);});}private TextClassificationManager createTextClassificationManagerAsUser(UserIdInt int userId) {Context context getContext().createContextAsUser(UserHandle.of(userId), /* flags */ 0);return context.getSystemService(TextClassificationManager.class);}
}
5.解决方法
关键修改点屏蔽或者删除toast提示 Binder.withCleanCallingIdentity(() - {try {CharSequence callingAppLabel mPm.getApplicationLabel(mPm.getApplicationInfoAsUser(callingPackage, 0, userId));String message getContext().getString(R.string.pasted_from_clipboard, callingAppLabel);Slog.i(TAG, message);/* Toast.makeText(getContext(), UiThread.get().getLooper(), message, Toast.LENGTH_SHORT).show(); */} catch (PackageManager.NameNotFoundException e) {// do nothing}});/** Copyright (C) 2008 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.clipboard;import static android.app.ActivityManagerInternal.ALLOW_FULL_ONLY;import android.Manifest;
import android.annotation.NonNull;
import android.annotation.Nullable;
import android.annotation.UserIdInt;
import android.annotation.WorkerThread;
import android.app.ActivityManagerInternal;
import android.app.AppGlobals;
import android.app.AppOpsManager;
import android.app.IUriGrantsManager;
import android.app.KeyguardManager;
import android.app.UriGrantsManager;
import android.content.ClipData;
import android.content.ClipDescription;
import android.content.ClipboardManager;
import android.content.ComponentName;
import android.content.ContentProvider;
import android.content.ContentResolver;
import android.content.Context;
import android.content.IClipboard;
import android.content.IOnPrimaryClipChangedListener;
import android.content.Intent;
import android.content.pm.IPackageManager;
import android.content.pm.PackageInfo;
import android.content.pm.PackageManager;
import android.content.pm.UserInfo;
import android.net.Uri;
import android.os.Binder;
import android.os.Bundle;
import android.os.Handler;
import android.os.HandlerThread;
import android.os.IBinder;
import android.os.IUserManager;
import android.os.Parcel;
import android.os.RemoteCallbackList;
import android.os.RemoteException;
import android.os.ServiceManager;
import android.os.SystemProperties;
import android.os.UserHandle;
import android.os.UserManager;
import android.provider.DeviceConfig;
import android.provider.Settings;
import android.text.TextUtils;
import android.util.ArrayMap;
import android.util.Slog;
import android.util.SparseArray;
import android.util.SparseBooleanArray;
import android.view.autofill.AutofillManagerInternal;
import android.view.textclassifier.TextClassificationContext;
import android.view.textclassifier.TextClassificationManager;
import android.view.textclassifier.TextClassifier;
import android.view.textclassifier.TextClassifierEvent;
import android.view.textclassifier.TextLinks;
import android.widget.Toast;import com.android.internal.R;
import com.android.internal.annotations.GuardedBy;
import com.android.server.LocalServices;
import com.android.server.SystemService;
import com.android.server.UiThread;
import com.android.server.contentcapture.ContentCaptureManagerInternal;
import com.android.server.uri.UriGrantsManagerInternal;
import com.android.server.wm.WindowManagerInternal;import java.util.HashSet;
import java.util.List;
import java.util.function.Consumer;/*** Implementation of the clipboard for copy and paste.* p* Caution: exception for clipboard data and isInternalSysWindowAppWithWindowFocus, any of data* is accessed by userId or uid should be in * the try segment between* Binder.clearCallingIdentity and Binder.restoreCallingIdentity.* /p*/
public class ClipboardService extends SystemService {private static final String TAG ClipboardService;private static final boolean IS_EMULATOR SystemProperties.getBoolean(ro.boot.qemu, false);// DeviceConfig propertiesprivate static final String PROPERTY_MAX_CLASSIFICATION_LENGTH max_classification_length;private static final int DEFAULT_MAX_CLASSIFICATION_LENGTH 400;private final ActivityManagerInternal mAmInternal;private final IUriGrantsManager mUgm;private final UriGrantsManagerInternal mUgmInternal;private final WindowManagerInternal mWm;private final IUserManager mUm;private final PackageManager mPm;private final AppOpsManager mAppOps;private final ContentCaptureManagerInternal mContentCaptureInternal;private final AutofillManagerInternal mAutofillInternal;private final IBinder mPermissionOwner;private final ConsumerClipData mEmulatorClipboardMonitor;private final Handler mWorkerHandler;GuardedBy(mLock)private final SparseArrayPerUserClipboard mClipboards new SparseArray();GuardedBy(mLock)private boolean mShowAccessNotifications ClipboardManager.DEVICE_CONFIG_DEFAULT_SHOW_ACCESS_NOTIFICATIONS;GuardedBy(mLock)private int mMaxClassificationLength DEFAULT_MAX_CLASSIFICATION_LENGTH;private final Object mLock new Object();/*** Instantiates the clipboard.*/public ClipboardService(Context context) {super(context);mAmInternal LocalServices.getService(ActivityManagerInternal.class);mUgm UriGrantsManager.getService();mUgmInternal LocalServices.getService(UriGrantsManagerInternal.class);mWm LocalServices.getService(WindowManagerInternal.class);mPm getContext().getPackageManager();mUm (IUserManager) ServiceManager.getService(Context.USER_SERVICE);mAppOps (AppOpsManager) getContext().getSystemService(Context.APP_OPS_SERVICE);mContentCaptureInternal LocalServices.getService(ContentCaptureManagerInternal.class);mAutofillInternal LocalServices.getService(AutofillManagerInternal.class);final IBinder permOwner mUgmInternal.newUriPermissionOwner(clipboard);mPermissionOwner permOwner;if (IS_EMULATOR) {mEmulatorClipboardMonitor new EmulatorClipboardMonitor((clip) - {synchronized (mLock) {setPrimaryClipInternalLocked(getClipboardLocked(0), clip,android.os.Process.SYSTEM_UID, null);}});} else {mEmulatorClipboardMonitor (clip) - {};}updateConfig();DeviceConfig.addOnPropertiesChangedListener(DeviceConfig.NAMESPACE_CLIPBOARD,getContext().getMainExecutor(), properties - updateConfig());HandlerThread workerThread new HandlerThread(TAG);workerThread.start();mWorkerHandler workerThread.getThreadHandler();}Overridepublic void onStart() {publishBinderService(Context.CLIPBOARD_SERVICE, new ClipboardImpl());}Overridepublic void onUserStopped(NonNull TargetUser user) {synchronized (mLock) {mClipboards.remove(user.getUserIdentifier());}}private void updateConfig() {synchronized (mLock) {mShowAccessNotifications DeviceConfig.getBoolean(DeviceConfig.NAMESPACE_CLIPBOARD,ClipboardManager.DEVICE_CONFIG_SHOW_ACCESS_NOTIFICATIONS,ClipboardManager.DEVICE_CONFIG_DEFAULT_SHOW_ACCESS_NOTIFICATIONS);mMaxClassificationLength DeviceConfig.getInt(DeviceConfig.NAMESPACE_CLIPBOARD,PROPERTY_MAX_CLASSIFICATION_LENGTH, DEFAULT_MAX_CLASSIFICATION_LENGTH);}}private class ListenerInfo {final int mUid;final String mPackageName;ListenerInfo(int uid, String packageName) {mUid uid;mPackageName packageName;}}private class PerUserClipboard {final int userId;final RemoteCallbackListIOnPrimaryClipChangedListener primaryClipListeners new RemoteCallbackListIOnPrimaryClipChangedListener();/** Current primary clip. */ClipData primaryClip;/** UID that set {link #primaryClip}. */int primaryClipUid android.os.Process.NOBODY_UID;/** Package of the app that set {link #primaryClip}. */String mPrimaryClipPackage;/** Uids that have already triggered a toast notification for {link #primaryClip} */final SparseBooleanArray mNotifiedUids new SparseBooleanArray();/*** Uids that have already triggered a notification to text classifier for* {link #primaryClip}.*/final SparseBooleanArray mNotifiedTextClassifierUids new SparseBooleanArray();final HashSetString activePermissionOwners new HashSetString();/** The text classifier session that is used to annotate the text in the primary clip. */TextClassifier mTextClassifier;PerUserClipboard(int userId) {this.userId userId;}}/*** To check if the application has granted the INTERNAL_SYSTEM_WINDOW permission and window* focus.* p* All of applications granted INTERNAL_SYSTEM_WINDOW has the risk to leak clip information to* the other user because INTERNAL_SYSTEM_WINDOW is signature level. i.e. platform key. Because* some of applications have both of INTERNAL_SYSTEM_WINDOW and INTERACT_ACROSS_USERS_FULL at* the same time, that means they show the same window to all of users.* /pp* Unfortunately, all of applications with INTERNAL_SYSTEM_WINDOW starts very early and then* the real window show is belong to user 0 rather user X. The result of* WindowManager.isUidFocused checking user X window is false.* /p* return true if the app granted INTERNAL_SYSTEM_WINDOW permission.*/private boolean isInternalSysWindowAppWithWindowFocus(String callingPackage) {// Shell can access the clipboard for testing purposes.if (mPm.checkPermission(Manifest.permission.INTERNAL_SYSTEM_WINDOW,callingPackage) PackageManager.PERMISSION_GRANTED) {if (mWm.isUidFocused(Binder.getCallingUid())) {return true;}}return false;}/*** To get the validate current userId.* p* The intending userId needs to be validated by ActivityManagerInternal.handleIncomingUser.* To check if the uid of the process have the permission to run as the userId.* e.x. INTERACT_ACROSS_USERS_FULL or INTERACT_ACROSS_USERS permission granted.* /p* p* The application with the granted INTERNAL_SYSTEM_WINDOW permission should run as the output* of ActivityManagerInternal.handleIncomingUser rather the userId of Binder.getCAllingUid().* To use the userId of Binder.getCallingUid() is the root cause that leaks the information* comes from user 0 to user X.* /p** param packageName the package name of the calling side* param userId the userId passed by the calling side* return return the intending userId that has been validated by ActivityManagerInternal.*/UserIdIntprivate int getIntendingUserId(String packageName, UserIdInt int userId) {final int callingUid Binder.getCallingUid();final int callingUserId UserHandle.getUserId(callingUid);if (!UserManager.supportsMultipleUsers() || callingUserId userId) {return callingUserId;}int intendingUserId callingUserId;intendingUserId mAmInternal.handleIncomingUser(Binder.getCallingPid(),Binder.getCallingUid(), userId, false /* allow all */, ALLOW_FULL_ONLY,checkClipboardServiceCallingUser, packageName);return intendingUserId;}/*** To get the current running uid who is intend to run as.* In ording to distinguish the nameing and reducing the confusing names, the client client* side pass userId that is intend to run as,* return return IntentingUid validated intenting userId * UserHandle.getAppId(Binder.getCallingUid())*/private int getIntendingUid(String packageName, UserIdInt int userId) {return UserHandle.getUid(getIntendingUserId(packageName, userId),UserHandle.getAppId(Binder.getCallingUid()));}/*** To handle the difference between userId and intendingUserId, uid and intendingUid.** userId means that comes from the calling side and should be validated by* ActivityManagerInternal.handleIncomingUser.* After validation of ActivityManagerInternal.handleIncomingUser, the userId is called* intendingUserId and the uid is called intendingUid.*/private class ClipboardImpl extends IClipboard.Stub {Overridepublic boolean onTransact(int code, Parcel data, Parcel reply, int flags)throws RemoteException {try {return super.onTransact(code, data, reply, flags);} catch (RuntimeException e) {if (!(e instanceof SecurityException)) {Slog.wtf(clipboard, Exception: , e);}throw e;}}Overridepublic void setPrimaryClip(ClipData clip, String callingPackage, UserIdInt int userId) {checkAndSetPrimaryClip(clip, callingPackage, userId, callingPackage);}Overridepublic void setPrimaryClipAsPackage(ClipData clip, String callingPackage, UserIdInt int userId, String sourcePackage) {getContext().enforceCallingOrSelfPermission(Manifest.permission.SET_CLIP_SOURCE,Requires SET_CLIP_SOURCE permission);checkAndSetPrimaryClip(clip, callingPackage, userId, sourcePackage);}private void checkAndSetPrimaryClip(ClipData clip, String callingPackage, UserIdInt int userId, String sourcePackage) {if (clip null || clip.getItemCount() 0) {throw new IllegalArgumentException(No items);}final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_WRITE_CLIPBOARD, callingPackage,intendingUid, intendingUserId)) {return;}checkDataOwner(clip, intendingUid);synchronized (mLock) {setPrimaryClipInternalLocked(clip, intendingUid, sourcePackage);}}Overridepublic void clearPrimaryClip(String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_WRITE_CLIPBOARD, callingPackage,intendingUid, intendingUserId)) {return;}synchronized (mLock) {setPrimaryClipInternalLocked(null, intendingUid, callingPackage);}}Overridepublic ClipData getPrimaryClip(String pkg, UserIdInt int userId) {final int intendingUid getIntendingUid(pkg, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, pkg,intendingUid, intendingUserId)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {try {addActiveOwnerLocked(intendingUid, pkg);} catch (SecurityException e) {// Permission could not be granted - URI may be invalidSlog.i(TAG, Could not grant permission to primary clip. Clearing clipboard.);setPrimaryClipInternalLocked(null, intendingUid, pkg);return null;}PerUserClipboard clipboard getClipboardLocked(intendingUserId);showAccessNotificationLocked(pkg, intendingUid, intendingUserId, clipboard);notifyTextClassifierLocked(clipboard, pkg, intendingUid);return clipboard.primaryClip;}}Overridepublic ClipDescription getPrimaryClipDescription(String callingPackage,UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);return clipboard.primaryClip ! null? clipboard.primaryClip.getDescription() : null;}}Overridepublic boolean hasPrimaryClip(String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return false;}synchronized (mLock) {return getClipboardLocked(intendingUserId).primaryClip ! null;}}Overridepublic void addPrimaryClipChangedListener(IOnPrimaryClipChangedListener listener,String callingPackage, UserIdInt int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);synchronized (mLock) {getClipboardLocked(intendingUserId).primaryClipListeners.register(listener,new ListenerInfo(intendingUid, callingPackage));}}Overridepublic void removePrimaryClipChangedListener(IOnPrimaryClipChangedListener listener,String callingPackage, UserIdInt int userId) {final int intendingUserId getIntendingUserId(callingPackage, userId);synchronized (mLock) {getClipboardLocked(intendingUserId).primaryClipListeners.unregister(listener);}}Overridepublic boolean hasClipboardText(String callingPackage, int userId) {final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return false;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);if (clipboard.primaryClip ! null) {CharSequence text clipboard.primaryClip.getItemAt(0).getText();return text ! null text.length() 0;}return false;}}Overridepublic String getPrimaryClipSource(String callingPackage, int userId) {getContext().enforceCallingOrSelfPermission(Manifest.permission.SET_CLIP_SOURCE,Requires SET_CLIP_SOURCE permission);final int intendingUid getIntendingUid(callingPackage, userId);final int intendingUserId UserHandle.getUserId(intendingUid);if (!clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, callingPackage,intendingUid, intendingUserId, false)|| isDeviceLocked(intendingUserId)) {return null;}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(intendingUserId);if (clipboard.primaryClip ! null) {return clipboard.mPrimaryClipPackage;}return null;}}};GuardedBy(mLock)private PerUserClipboard getClipboardLocked(UserIdInt int userId) {PerUserClipboard puc mClipboards.get(userId);if (puc null) {puc new PerUserClipboard(userId);mClipboards.put(userId, puc);}return puc;}ListUserInfo getRelatedProfiles(UserIdInt int userId) {final ListUserInfo related;final long origId Binder.clearCallingIdentity();try {related mUm.getProfiles(userId, true);} catch (RemoteException e) {Slog.e(TAG, Remote Exception calling UserManager: e);return null;} finally{Binder.restoreCallingIdentity(origId);}return related;}/** Check if the user has the given restriction set. Default to true if error occured during* calling UserManager, so it fails safe.*/private boolean hasRestriction(String restriction, int userId) {try {return mUm.hasUserRestriction(restriction, userId);} catch (RemoteException e) {Slog.e(TAG, Remote Exception calling UserManager.getUserRestrictions: , e);// Fails safereturn true;}}void setPrimaryClipInternal(Nullable ClipData clip, int uid) {synchronized (mLock) {setPrimaryClipInternalLocked(clip, uid, null);}}GuardedBy(mLock)private void setPrimaryClipInternalLocked(Nullable ClipData clip, int uid, Nullable String sourcePackage) {mEmulatorClipboardMonitor.accept(clip);final int userId UserHandle.getUserId(uid);if (clip ! null) {startClassificationLocked(clip, userId);}// Update this usersetPrimaryClipInternalLocked(getClipboardLocked(userId), clip, uid, sourcePackage);// Update related usersListUserInfo related getRelatedProfiles(userId);if (related ! null) {int size related.size();if (size 1) { // Related profiles list include the current profile.final boolean canCopy !hasRestriction(UserManager.DISALLOW_CROSS_PROFILE_COPY_PASTE, userId);// Copy clip data to related users if allowed. If disallowed, then remove// primary clip in related users to prevent pasting stale content.if (!canCopy) {clip null;} else if (clip null) {// do nothing for canCopy true and clip null case// To prevent from NPE happen in new ClipData(clip) when run// android.content.cts.ClipboardManagerTest#testClearPrimaryClip} else {// We want to fix the uris of the related users clip without changing the// uris of the current users clip.// So, copy the ClipData, and then copy all the items, so that nothing// is shared in memory.clip new ClipData(clip);for (int i clip.getItemCount() - 1; i 0; i--) {clip.setItemAt(i, new ClipData.Item(clip.getItemAt(i)));}clip.fixUrisLight(userId);}for (int i 0; i size; i) {int id related.get(i).id;if (id ! userId) {final boolean canCopyIntoProfile !hasRestriction(UserManager.DISALLOW_SHARE_INTO_MANAGED_PROFILE, id);if (canCopyIntoProfile) {setPrimaryClipInternalLocked(getClipboardLocked(id), clip, uid, sourcePackage);}}}}}}void setPrimaryClipInternal(PerUserClipboard clipboard, Nullable ClipData clip,int uid) {synchronized (mLock) {setPrimaryClipInternalLocked(clipboard, clip, uid, null);}}GuardedBy(mLock)private void setPrimaryClipInternalLocked(PerUserClipboard clipboard, Nullable ClipData clip,int uid, Nullable String sourcePackage) {revokeUris(clipboard);clipboard.activePermissionOwners.clear();if (clip null clipboard.primaryClip null) {return;}clipboard.primaryClip clip;clipboard.mNotifiedUids.clear();clipboard.mNotifiedTextClassifierUids.clear();if (clip ! null) {clipboard.primaryClipUid uid;clipboard.mPrimaryClipPackage sourcePackage;} else {clipboard.primaryClipUid android.os.Process.NOBODY_UID;clipboard.mPrimaryClipPackage null;}if (clip ! null) {final ClipDescription description clip.getDescription();if (description ! null) {description.setTimestamp(System.currentTimeMillis());}}sendClipChangedBroadcast(clipboard);}private void sendClipChangedBroadcast(PerUserClipboard clipboard) {final long ident Binder.clearCallingIdentity();final int n clipboard.primaryClipListeners.beginBroadcast();try {for (int i 0; i n; i) {try {ListenerInfo li (ListenerInfo)clipboard.primaryClipListeners.getBroadcastCookie(i);if (clipboardAccessAllowed(AppOpsManager.OP_READ_CLIPBOARD, li.mPackageName,li.mUid, UserHandle.getUserId(li.mUid))) {clipboard.primaryClipListeners.getBroadcastItem(i).dispatchPrimaryClipChanged();}} catch (RemoteException e) {// The RemoteCallbackList will take care of removing// the dead object for us.}}} finally {clipboard.primaryClipListeners.finishBroadcast();Binder.restoreCallingIdentity(ident);}}GuardedBy(mLock)private void startClassificationLocked(NonNull ClipData clip, UserIdInt int userId) {CharSequence text (clip.getItemCount() 0) ? null : clip.getItemAt(0).getText();if (TextUtils.isEmpty(text) || text.length() mMaxClassificationLength) {clip.getDescription().setClassificationStatus(ClipDescription.CLASSIFICATION_NOT_PERFORMED);return;}TextClassifier classifier;final long ident Binder.clearCallingIdentity();try {classifier createTextClassificationManagerAsUser(userId).createTextClassificationSession(new TextClassificationContext.Builder(getContext().getPackageName(),TextClassifier.WIDGET_TYPE_CLIPBOARD).build());} finally {Binder.restoreCallingIdentity(ident);}if (text.length() classifier.getMaxGenerateLinksTextLength()) {clip.getDescription().setClassificationStatus(ClipDescription.CLASSIFICATION_NOT_PERFORMED);return;}mWorkerHandler.post(() - doClassification(text, clip, classifier, userId));}WorkerThreadprivate void doClassification(CharSequence text, ClipData clip, TextClassifier classifier, UserIdInt int userId) {TextLinks.Request request new TextLinks.Request.Builder(text).build();TextLinks links classifier.generateLinks(request);// Find the highest confidence for each entity in the text.ArrayMapString, Float confidences new ArrayMap();for (TextLinks.TextLink link : links.getLinks()) {for (int i 0; i link.getEntityCount(); i) {String entity link.getEntity(i);float conf link.getConfidenceScore(entity);if (conf confidences.getOrDefault(entity, 0f)) {confidences.put(entity, conf);}}}synchronized (mLock) {PerUserClipboard clipboard getClipboardLocked(userId);if (clipboard.primaryClip clip) {applyClassificationAndSendBroadcastLocked(clipboard, confidences, links, classifier);// Also apply to related profiles if neededListUserInfo related getRelatedProfiles(userId);if (related ! null) {int size related.size();for (int i 0; i size; i) {int id related.get(i).id;if (id ! userId) {final boolean canCopyIntoProfile !hasRestriction(UserManager.DISALLOW_SHARE_INTO_MANAGED_PROFILE, id);if (canCopyIntoProfile) {PerUserClipboard relatedClipboard getClipboardLocked(id);if (hasTextLocked(relatedClipboard, text)) {applyClassificationAndSendBroadcastLocked(relatedClipboard, confidences, links, classifier);}}}}}}}}GuardedBy(mLock)private void applyClassificationAndSendBroadcastLocked(PerUserClipboard clipboard, ArrayMapString, Float confidences, TextLinks links,TextClassifier classifier) {clipboard.mTextClassifier classifier;clipboard.primaryClip.getDescription().setConfidenceScores(confidences);if (!links.getLinks().isEmpty()) {clipboard.primaryClip.getItemAt(0).setTextLinks(links);}sendClipChangedBroadcast(clipboard);}GuardedBy(mLock)private boolean hasTextLocked(PerUserClipboard clipboard, NonNull CharSequence text) {return clipboard.primaryClip ! null clipboard.primaryClip.getItemCount() 0 text.equals(clipboard.primaryClip.getItemAt(0).getText());}private boolean isDeviceLocked(UserIdInt int userId) {final long token Binder.clearCallingIdentity();try {final KeyguardManager keyguardManager getContext().getSystemService(KeyguardManager.class);return keyguardManager ! null keyguardManager.isDeviceLocked(userId);} finally {Binder.restoreCallingIdentity(token);}}private void checkUriOwner(Uri uri, int sourceUid) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {// This will throw SecurityException if caller cant grantmUgmInternal.checkGrantUriPermission(sourceUid, null,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)));} finally {Binder.restoreCallingIdentity(ident);}}private void checkItemOwner(ClipData.Item item, int uid) {if (item.getUri() ! null) {checkUriOwner(item.getUri(), uid);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {checkUriOwner(intent.getData(), uid);}}private void checkDataOwner(ClipData data, int uid) {final int N data.getItemCount();for (int i0; iN; i) {checkItemOwner(data.getItemAt(i), uid);}}private void grantUriPermission(Uri uri, int sourceUid, String targetPkg,int targetUserId) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {mUgm.grantUriPermissionFromOwner(mPermissionOwner, sourceUid, targetPkg,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)),targetUserId);} catch (RemoteException ignored) {// Ignored because were in same process} finally {Binder.restoreCallingIdentity(ident);}}private void grantItemPermission(ClipData.Item item, int sourceUid, String targetPkg,int targetUserId) {if (item.getUri() ! null) {grantUriPermission(item.getUri(), sourceUid, targetPkg, targetUserId);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {grantUriPermission(intent.getData(), sourceUid, targetPkg, targetUserId);}}GuardedBy(mLock)private void addActiveOwnerLocked(int uid, String pkg) {final IPackageManager pm AppGlobals.getPackageManager();final int targetUserHandle UserHandle.getCallingUserId();final long oldIdentity Binder.clearCallingIdentity();try {PackageInfo pi pm.getPackageInfo(pkg, 0, targetUserHandle);if (pi null) {throw new IllegalArgumentException(Unknown package pkg);}if (!UserHandle.isSameApp(pi.applicationInfo.uid, uid)) {throw new SecurityException(Calling uid uid does not own package pkg);}} catch (RemoteException e) {// Cant happen; the package manager is in the same process} finally {Binder.restoreCallingIdentity(oldIdentity);}PerUserClipboard clipboard getClipboardLocked(UserHandle.getUserId(uid));if (clipboard.primaryClip ! null !clipboard.activePermissionOwners.contains(pkg)) {final int N clipboard.primaryClip.getItemCount();for (int i0; iN; i) {grantItemPermission(clipboard.primaryClip.getItemAt(i), clipboard.primaryClipUid,pkg, UserHandle.getUserId(uid));}clipboard.activePermissionOwners.add(pkg);}}private void revokeUriPermission(Uri uri, int sourceUid) {if (uri null || !ContentResolver.SCHEME_CONTENT.equals(uri.getScheme())) return;final long ident Binder.clearCallingIdentity();try {mUgmInternal.revokeUriPermissionFromOwner(mPermissionOwner,ContentProvider.getUriWithoutUserId(uri),Intent.FLAG_GRANT_READ_URI_PERMISSION,ContentProvider.getUserIdFromUri(uri, UserHandle.getUserId(sourceUid)));} finally {Binder.restoreCallingIdentity(ident);}}private void revokeItemPermission(ClipData.Item item, int sourceUid) {if (item.getUri() ! null) {revokeUriPermission(item.getUri(), sourceUid);}Intent intent item.getIntent();if (intent ! null intent.getData() ! null) {revokeUriPermission(intent.getData(), sourceUid);}}private void revokeUris(PerUserClipboard clipboard) {if (clipboard.primaryClip null) {return;}final int N clipboard.primaryClip.getItemCount();for (int i0; iN; i) {revokeItemPermission(clipboard.primaryClip.getItemAt(i), clipboard.primaryClipUid);}}private boolean clipboardAccessAllowed(int op, String callingPackage, int uid,UserIdInt int userId) {return clipboardAccessAllowed(op, callingPackage, uid, userId, true);}private boolean clipboardAccessAllowed(int op, String callingPackage, int uid,UserIdInt int userId, boolean shouldNoteOp) {boolean allowed;// First, verify package ownership to ensure use below is safe.mAppOps.checkPackage(uid, callingPackage);// Shell can access the clipboard for testing purposes.if (mPm.checkPermission(android.Manifest.permission.READ_CLIPBOARD_IN_BACKGROUND,callingPackage) PackageManager.PERMISSION_GRANTED) {allowed true;} else {// The default IME is always allowed to access the clipboard.allowed isDefaultIme(userId, callingPackage);}switch (op) {case AppOpsManager.OP_READ_CLIPBOARD:// Clipboard can only be read by applications with focus..// or the application have the INTERNAL_SYSTEM_WINDOW and INTERACT_ACROSS_USERS_FULL// at the same time. e.x. SystemUI. It needs to check the window focus of// Binder.getCallingUid(). Without checking, the user X cant copy any thing from// INTERNAL_SYSTEM_WINDOW to the other applications.if (!allowed) {allowed mWm.isUidFocused(uid)|| isInternalSysWindowAppWithWindowFocus(callingPackage);}if (!allowed mContentCaptureInternal ! null) {// ...or the Content Capture Service// The uid parameter of mContentCaptureInternal.isContentCaptureServiceForUser// is used to check if the uid has the permission BIND_CONTENT_CAPTURE_SERVICE.// if the application has the permission, let it to access users clipboard.// To passed synthesized uid user#10_app#systemui may not tell the real uid.// userId must pass intending userId. i.e. user#10.allowed mContentCaptureInternal.isContentCaptureServiceForUser(uid, userId);}if (!allowed mAutofillInternal ! null) {// ...or the Augmented Autofill Service// The uid parameter of mAutofillInternal.isAugmentedAutofillServiceForUser// is used to check if the uid has the permission BIND_AUTOFILL_SERVICE.// if the application has the permission, let it to access users clipboard.// To passed synthesized uid user#10_app#systemui may not tell the real uid.// userId must pass intending userId. i.e. user#10.allowed mAutofillInternal.isAugmentedAutofillServiceForUser(uid, userId);}break;case AppOpsManager.OP_WRITE_CLIPBOARD:// Writing is allowed without focus.allowed true;break;default:throw new IllegalArgumentException(Unknown clipboard appop op);}if (!allowed) {Slog.e(TAG, Denying clipboard access to callingPackage , application is not in focus nor is it a system service for user userId);return false;}// Finally, check the app op.int appOpsResult;if (shouldNoteOp) {appOpsResult mAppOps.noteOp(op, uid, callingPackage);} else {appOpsResult mAppOps.checkOp(op, uid, callingPackage);}return appOpsResult AppOpsManager.MODE_ALLOWED;}private boolean isDefaultIme(int userId, String packageName) {String defaultIme Settings.Secure.getStringForUser(getContext().getContentResolver(),Settings.Secure.DEFAULT_INPUT_METHOD, userId);if (!TextUtils.isEmpty(defaultIme)) {final String imePkg ComponentName.unflattenFromString(defaultIme).getPackageName();return imePkg.equals(packageName);}return false;}/*** Shows a toast to inform the user that an app has accessed the clipboard. This is only done if* the setting is enabled, and if the accessing app is not the source of the data and is not the* IME, the content capture service, or the autofill service. The notification is also only* shown once per clip for each app.*/GuardedBy(mLock)private void showAccessNotificationLocked(String callingPackage, int uid, UserIdInt int userId,PerUserClipboard clipboard) {if (clipboard.primaryClip null) {return;}if (Settings.Secure.getInt(getContext().getContentResolver(),Settings.Secure.CLIPBOARD_SHOW_ACCESS_NOTIFICATIONS,(mShowAccessNotifications ? 1 : 0)) 0) {return;}// Dont notify if the app accessing the clipboard is the same as the current owner.if (UserHandle.isSameApp(uid, clipboard.primaryClipUid)) {return;}// Exclude special cases: IME, ContentCapture, Autofill.if (isDefaultIme(userId, callingPackage)) {return;}if (mContentCaptureInternal ! null mContentCaptureInternal.isContentCaptureServiceForUser(uid, userId)) {return;}if (mAutofillInternal ! null mAutofillInternal.isAugmentedAutofillServiceForUser(uid, userId)) {return;}// Dont notify if already notified for this uid and clip.if (clipboard.mNotifiedUids.get(uid)) {return;}clipboard.mNotifiedUids.put(uid, true);Binder.withCleanCallingIdentity(() - {try {CharSequence callingAppLabel mPm.getApplicationLabel(mPm.getApplicationInfoAsUser(callingPackage, 0, userId));String message getContext().getString(R.string.pasted_from_clipboard, callingAppLabel);Slog.i(TAG, message);/* Toast.makeText(getContext(), UiThread.get().getLooper(), message, Toast.LENGTH_SHORT).show(); */} catch (PackageManager.NameNotFoundException e) {// do nothing}});}/*** Returns true if the provided {link ClipData} represents a single piece of text. That is, if* there is only on {link ClipData.Item}, and that item contains a non-empty piece of text and* no URI or Intent. Note that HTML may be provided along with text so the presence of* HtmlText in the clip does not prevent this method returning true.*/private static boolean isText(NonNull ClipData data) {if (data.getItemCount() 1) {return false;}ClipData.Item item data.getItemAt(0);return !TextUtils.isEmpty(item.getText()) item.getUri() null item.getIntent() null;}/** Potentially notifies the text classifier that an app is accessing a text clip. */GuardedBy(mLock)private void notifyTextClassifierLocked(PerUserClipboard clipboard, String callingPackage, int callingUid) {if (clipboard.primaryClip null) {return;}ClipData.Item item clipboard.primaryClip.getItemAt(0);if (item null) {return;}if (!isText(clipboard.primaryClip)) {return;}TextClassifier textClassifier clipboard.mTextClassifier;// Dont notify text classifier if we havent used it to annotate the text in the clip.if (textClassifier null) {return;}// Dont notify text classifier if the app reading the clipboard does not have the focus.if (!mWm.isUidFocused(callingUid)) {return;}// Dont notify text classifier again if already notified for this uid and clip.if (clipboard.mNotifiedTextClassifierUids.get(callingUid)) {return;}clipboard.mNotifiedTextClassifierUids.put(callingUid, true);Binder.withCleanCallingIdentity(() - {TextClassifierEvent.TextLinkifyEvent pasteEvent new TextClassifierEvent.TextLinkifyEvent.Builder(TextClassifierEvent.TYPE_READ_CLIPBOARD).setEventContext(new TextClassificationContext.Builder(callingPackage, TextClassifier.WIDGET_TYPE_CLIPBOARD).build()).setExtras(Bundle.forPair(source_package, clipboard.mPrimaryClipPackage)).build();textClassifier.onTextClassifierEvent(pasteEvent);});}private TextClassificationManager createTextClassificationManagerAsUser(UserIdInt int userId) {Context context getContext().createContextAsUser(UserHandle.of(userId), /* flags */ 0);return context.getSystemService(TextClassificationManager.class);}
}
6.解决后效果如下
再次到浏览器使用剪切板复制文本内容发现没有出现toast故此bug已解决。 7.总结
今天遇到的问题在Android12 Rom定制时使用剪贴板复制成功后会出现一个toast提示需要根据日志排查定位到问题原因解决也很简单删除或者注释toast即可。
