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Commit 05d0fe2f authored by Edward Cunningham's avatar Edward Cunningham
Browse files

Adding experimental toast for clipboard access. 

The toast doesn't show by default, and can be enabled via:

adb shell settings put global clipboard_access_toast_enabled 1

Bug: 167676460
Test: Manual, copying/pasting between apps and users.
Change-Id: I2e9dd9efbb5cec2fd1b595b61b0141c093a36a79
parent d64cb948

services/core/java/com/android/server/clipboard/ClipboardService.java

+66 −1
Original line number Diff line number Diff line
@@ -57,10 +57,12 @@ import android.text.TextUtils; 
import android.util.Slog;

import android.util.SparseArray;

import android.view.autofill.AutofillManagerInternal;

import android.widget.Toast;



import com.android.server.LocalServices;

import com.android.server.SystemService;

import com.android.server.SystemService.TargetUser;

import com.android.server.UiThread;

import com.android.server.contentcapture.ContentCaptureManagerInternal;

import com.android.server.uri.UriGrantsManagerInternal;

import com.android.server.wm.WindowManagerInternal;
@@ -391,7 +393,9 @@ public class ClipboardService extends SystemService { 
                    return null;

                }

                addActiveOwnerLocked(intendingUid, pkg);

                return getClipboard(intendingUserId).primaryClip;

                PerUserClipboard clipboard = getClipboard(intendingUserId);

                maybeNotify(pkg, intendingUid, intendingUserId, clipboard);

                return clipboard.primaryClip;

            }

        }
@@ -821,4 +825,65 @@ public class ClipboardService extends SystemService { 


        return appOpsResult == AppOpsManager.MODE_ALLOWED;

    }



    /**

     * Potentially notifies the user (via a toast) about an app accessing the clipboard.

     * TODO(b/167676460): STOPSHIP as we don't want this code as-is to launch. Just an experiment.

     */

    private void maybeNotify(String callingPackage, int uid, @UserIdInt int userId,

            PerUserClipboard clipboard) {

        if (clipboard.primaryClip == null) {

            return;

        }

        if (Settings.Global.getInt(getContext().getContentResolver(),

                "clipboard_access_toast_enabled", 0) == 0) {

            return;

        }

        // Don't notify if the app accessing the clipboard is the same as the current owner.

        if (UserHandle.isSameApp(uid, clipboard.primaryClipUid)) {

            return;

        }

        // Exclude some special cases. It's a bit wasteful to check these again here, but for now

        // beneficial to have all the logic contained in this single (probably temporary) method.

        String defaultIme = Settings.Secure.getStringForUser(getContext().getContentResolver(),

                Settings.Secure.DEFAULT_INPUT_METHOD, userId);

        if (!TextUtils.isEmpty(defaultIme)) {

            final String imePkg = ComponentName.unflattenFromString(defaultIme).getPackageName();

            if (imePkg.equals(callingPackage)) {

                return;

            }

        }

        if (mContentCaptureInternal != null

                && mContentCaptureInternal.isContentCaptureServiceForUser(uid, userId)) {

            return;

        }

        if (mAutofillInternal != null

                && mAutofillInternal.isAugmentedAutofillServiceForUser(uid, userId)) {

            return;

        }

        // Load the labels for the calling app and the app that set the clipboard content.

        final long ident = Binder.clearCallingIdentity();

        try {

            final IPackageManager pm = AppGlobals.getPackageManager();

            String message;

            final CharSequence callingLabel = mPm.getApplicationLabel(

                    pm.getApplicationInfo(callingPackage, 0, userId));

            final String[] packagesForUid = pm.getPackagesForUid(clipboard.primaryClipUid);

            if (packagesForUid != null && packagesForUid.length > 0) {

                final CharSequence clipLabel = mPm.getApplicationLabel(

                        pm.getApplicationInfo(packagesForUid[0], 0,

                                UserHandle.getUserId(clipboard.primaryClipUid)));

                message = callingLabel + " pasted from " + clipLabel;

            } else {

                message = callingLabel + " pasted from clipboard";

            }

            Slog.i(TAG, message);

            Toast.makeText(getContext(), UiThread.get().getLooper(), message, Toast.LENGTH_SHORT)

                    .show();

        } catch (RemoteException e) {

            /* ignore */

        } finally {

            Binder.restoreCallingIdentity(ident);

        }

    }

}