Adding shell commands for modifying content.

1. Added methods to the ActivityManagerService remote interface
   that allow accessing content providers outside of an application.
   These methods are guarded by an internal signature protected
   permission which is given to the shell user. This enables a
   shell program to access content providers.

2. Implemented a shell command that takes as input as standart
   fagls with values and manipulates content via the content provider
   mechanism.

Change-Id: I2943f8b59fbab33eb623458fa01ea61a077b9845

1 files changed, 57 insertions, 2 deletions

diff --git a/core/java/android/app/ActivityManagerNative.java b/core/java/android/app/ActivityManagerNative.java
index 5a364665768d..24079a5d8a2f 100644
--- a/core/java/android/app/ActivityManagerNative.java
+++ b/core/java/android/app/ActivityManagerNative.java
@@ -581,6 +581,21 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             return true;
         }
 
+        case GET_CONTENT_PROVIDER_EXTERNAL_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            String name = data.readString();
+            IBinder token = data.readStrongBinder();
+            ContentProviderHolder cph = getContentProviderExternal(name, token);
+            reply.writeNoException();
+            if (cph != null) {
+                reply.writeInt(1);
+                cph.writeToParcel(reply, 0);
+            } else {
+                reply.writeInt(0);
+            }
+            return true;
+        }
+
         case PUBLISH_CONTENT_PROVIDERS_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             IBinder b = data.readStrongBinder();
@@ -601,7 +616,16 @@ public abstract class ActivityManagerNative extends Binder implements IActivityM
             reply.writeNoException();
             return true;
         }
-        
+
+        case REMOVE_CONTENT_PROVIDER_EXTERNAL_TRANSACTION: {
+            data.enforceInterface(IActivityManager.descriptor);
+            String name = data.readString();
+            IBinder token = data.readStrongBinder();
+            removeContentProviderExternal(name, token);
+            reply.writeNoException();
+            return true;
+        }
+
         case GET_RUNNING_SERVICE_CONTROL_PANEL_TRANSACTION: {
             data.enforceInterface(IActivityManager.descriptor);
             ComponentName comp = ComponentName.CREATOR.createFromParcel(data);
@@ -2178,6 +2202,25 @@ class ActivityManagerProxy implements IActivityManager
         reply.recycle();
         return cph;
     }
+    public ContentProviderHolder getContentProviderExternal(String name, IBinder token)
+            throws RemoteException
+    {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        data.writeString(name);
+        data.writeStrongBinder(token);
+        mRemote.transact(GET_CONTENT_PROVIDER_EXTERNAL_TRANSACTION, data, reply, 0);
+        reply.readException();
+        int res = reply.readInt();
+        ContentProviderHolder cph = null;
+        if (res != 0) {
+            cph = ContentProviderHolder.CREATOR.createFromParcel(reply);
+        }
+        data.recycle();
+        reply.recycle();
+        return cph;
+    }
     public void publishContentProviders(IApplicationThread caller,
                                         List<ContentProviderHolder> providers) throws RemoteException
     {
@@ -2204,7 +2247,19 @@ class ActivityManagerProxy implements IActivityManager
         data.recycle();
         reply.recycle();
     }
-    
+
+    public void removeContentProviderExternal(String name, IBinder token) throws RemoteException {
+        Parcel data = Parcel.obtain();
+        Parcel reply = Parcel.obtain();
+        data.writeInterfaceToken(IActivityManager.descriptor);
+        data.writeString(name);
+        data.writeStrongBinder(token);
+        mRemote.transact(REMOVE_CONTENT_PROVIDER_EXTERNAL_TRANSACTION, data, reply, 0);
+        reply.readException();
+        data.recycle();
+        reply.recycle();
+    }
+
     public PendingIntent getRunningServiceControlPanel(ComponentName service)
             throws RemoteException
     {