Pass Bitmap instead of ParcelFileDescriptor in UserManager

Add a USER_INFO_CHANGED intent for lockscreen and quicksettings to use
to monitor changes to the user name or icon.

Bug: 7164040
Change-Id: Id6fb8b6d38ce04ccd02bbadcf0c10699783d6c03

4 files changed, 47 insertions, 27 deletions

diff --git a/core/java/android/content/Intent.java b/core/java/android/content/Intent.java
index d3b8648..e8507bc 100644
--- a/core/java/android/content/Intent.java
+++ b/core/java/android/content/Intent.java
@@ -2376,6 +2376,16 @@ public class Intent implements Parcelable, Cloneable {
     public static final String ACTION_USER_SWITCHED =
             "android.intent.action.USER_SWITCHED";
 
+    /**
+     * Broadcast sent to the system when a user's information changes. Carries an extra
+     * {@link #EXTRA_USER_HANDLE} to indicate which user's information changed.
+     * This is only sent to registered receivers, not manifest receivers. It is sent to the user
+     * whose information has changed.
+     * @hide
+     */
+    public static final String ACTION_USER_INFO_CHANGED =
+            "android.intent.action.USER_INFO_CHANGED";
+
     // ---------------------------------------------------------------------
     // ---------------------------------------------------------------------
     // Standard intent categories (see addCategory()).
diff --git a/core/java/android/os/IUserManager.aidl b/core/java/android/os/IUserManager.aidl
index 653c5f3..0798913 100644
--- a/core/java/android/os/IUserManager.aidl
+++ b/core/java/android/os/IUserManager.aidl
@@ -19,6 +19,7 @@ package android.os;
 
 import android.os.ParcelFileDescriptor;
 import android.content.pm.UserInfo;
+import android.graphics.Bitmap;
 
 /**
  *  {@hide}
@@ -27,8 +28,8 @@ interface IUserManager {
     UserInfo createUser(in String name, int flags);
     boolean removeUser(int userHandle);
     void setUserName(int userHandle, String name);
-    ParcelFileDescriptor setUserIcon(int userHandle);
-    ParcelFileDescriptor getUserIcon(int userHandle);
+    void setUserIcon(int userHandle, in Bitmap icon);
+    Bitmap getUserIcon(int userHandle);
     List<UserInfo> getUsers();
     UserInfo getUserInfo(int userHandle);
     void setGuestEnabled(boolean enable);
diff --git a/core/java/android/os/UserManager.java b/core/java/android/os/UserManager.java
index cac1e07..81d5b63 100644
--- a/core/java/android/os/UserManager.java
+++ b/core/java/android/os/UserManager.java
@@ -18,6 +18,7 @@ package android.os;
 import com.android.internal.R;
 import android.content.Context;
 import android.content.pm.UserInfo;
+import android.graphics.Bitmap;
 import android.util.Log;
 
 import java.util.List;
@@ -40,6 +41,7 @@ public class UserManager {
     /**
      * Returns whether the system supports multiple users.
      * @return true if multiple users can be created, false if it is a single user device.
+     * @hide
      */
     public boolean supportsMultipleUsers() {
         return getMaxSupportedUsers() > 1;
@@ -151,32 +153,30 @@ public class UserManager {
     }
 
     /**
-     * Returns a file descriptor for the user's photo. PNG data can be written into this file.
+     * Sets the user's photo.
      * @param userHandle the user for whom to change the photo.
-     * @return a {@link ParcelFileDescriptor} to which to write the photo.
+     * @param icon the bitmap to set as the photo.
      * @hide
      */
-    public ParcelFileDescriptor setUserIcon(int userHandle) {
+    public void setUserIcon(int userHandle, Bitmap icon) {
         try {
-            return mService.setUserIcon(userHandle);
+            mService.setUserIcon(userHandle, icon);
         } catch (RemoteException re) {
             Log.w(TAG, "Could not set the user icon ", re);
-            return null;
         }
     }
 
     /**
      * Returns a file descriptor for the user's photo. PNG data can be read from this file.
      * @param userHandle the user whose photo we want to read.
-     * @return a {@link ParcelFileDescriptor} from which to read the file, or null if there's no
-     * photo.
+     * @return a {@link Bitmap} of the user's photo, or null if there's no photo.
      * @hide
      */
-    public ParcelFileDescriptor getUserIcon(int userHandle) {
+    public Bitmap getUserIcon(int userHandle) {
         try {
             return mService.getUserIcon(userHandle);
         } catch (RemoteException re) {
-            Log.w(TAG, "Could not set the user icon ", re);
+            Log.w(TAG, "Could not get the user icon ", re);
             return null;
         }
     }
diff --git a/services/java/com/android/server/pm/UserManagerService.java b/services/java/com/android/server/pm/UserManagerService.java
index 690d7c9..be86628 100644
--- a/services/java/com/android/server/pm/UserManagerService.java
+++ b/services/java/com/android/server/pm/UserManagerService.java
@@ -29,6 +29,8 @@ import android.content.Context;
 import android.content.Intent;
 import android.content.pm.PackageManager;
 import android.content.pm.UserInfo;
+import android.graphics.Bitmap;
+import android.graphics.BitmapFactory;
 import android.os.Binder;
 import android.os.Environment;
 import android.os.FileUtils;
@@ -188,30 +190,35 @@ public class UserManagerService extends IUserManager.Stub {
                 writeUserLocked(info);
             }
         }
+        sendUserInfoChangedBroadcast(userId);
     }
 
     @Override
-    public ParcelFileDescriptor setUserIcon(int userId) {
+    public void setUserIcon(int userId, Bitmap bitmap) {
         checkManageUsersPermission("update users");
         synchronized (mPackagesLock) {
             UserInfo info = mUsers.get(userId);
-            if (info == null) return null;
-            ParcelFileDescriptor fd = openIconBitmapLocked(info, true /* write */);
-            if (fd != null) {
-                writeUserLocked(info);
-            }
-            return fd;
+            if (info == null) return;
+            writeBitmapLocked(info, bitmap);
+            writeUserLocked(info);
         }
+        sendUserInfoChangedBroadcast(userId);
+    }
+
+    private void sendUserInfoChangedBroadcast(int userId) {
+        Intent changedIntent = new Intent(Intent.ACTION_USER_INFO_CHANGED);
+        changedIntent.putExtra(Intent.EXTRA_USER_HANDLE, userId);
+        changedIntent.addFlags(Intent.FLAG_RECEIVER_REGISTERED_ONLY);
+        mContext.sendBroadcastAsUser(changedIntent, new UserHandle(userId));
     }
 
     @Override
-    public ParcelFileDescriptor getUserIcon(int userId) {
+    public Bitmap getUserIcon(int userId) {
         checkManageUsersPermission("read users");
         synchronized (mPackagesLock) {
             UserInfo info = mUsers.get(userId);
             if (info == null || info.iconPath == null) return null;
-            ParcelFileDescriptor fd = openIconBitmapLocked(info, false /* read */);
-            return fd;
+            return BitmapFactory.decodeFile(info.iconPath);
         }
     }
 
@@ -289,7 +296,7 @@ public class UserManagerService extends IUserManager.Stub {
         }
     }
 
-    private ParcelFileDescriptor openIconBitmapLocked(UserInfo info, boolean toWrite) {
+    private void writeBitmapLocked(UserInfo info, Bitmap bitmap) {
         try {
             File dir = new File(mUsersDir, Integer.toString(info.id));
             File file = new File(dir, USER_PHOTO_FILENAME);
@@ -300,16 +307,18 @@ public class UserManagerService extends IUserManager.Stub {
                         FileUtils.S_IRWXU|FileUtils.S_IRWXG|FileUtils.S_IXOTH,
                         -1, -1);
             }
-            ParcelFileDescriptor fd = ParcelFileDescriptor.open(file,
-                    toWrite ? MODE_CREATE|MODE_READ_WRITE : MODE_READ_WRITE);
-            if (toWrite) {
+            FileOutputStream os;
+            if (bitmap.compress(Bitmap.CompressFormat.PNG, 100, os = new FileOutputStream(file))) {
                 info.iconPath = file.getAbsolutePath();
             }
-            return fd;
+            try {
+                os.close();
+            } catch (IOException ioe) {
+                // What the ... !
+            }
         } catch (FileNotFoundException e) {
             Slog.w(LOG_TAG, "Error setting photo for user ", e);
         }
-        return null;
     }
 
     /**