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      1 /*
      2  * Copyright (C) 2010 The Android Open Source Project
      3  *
      4  * Licensed under the Apache License, Version 2.0 (the "License");
      5  * you may not use this file except in compliance with the License.
      6  * You may obtain a copy of the License at
      7  *
      8  *      http://www.apache.org/licenses/LICENSE-2.0
      9  *
     10  * Unless required by applicable law or agreed to in writing, software
     11  * distributed under the License is distributed on an "AS IS" BASIS,
     12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
     13  * See the License for the specific language governing permissions and
     14  * limitations under the License.
     15  */
     16 
     17 package com.android.cts.permissiondeclareapp;
     18 
     19 import android.content.ClipboardManager;
     20 import android.content.ContentProvider;
     21 import android.content.ContentValues;
     22 import android.content.Context;
     23 import android.content.Intent;
     24 import android.content.UriPermission;
     25 import android.database.Cursor;
     26 import android.net.Uri;
     27 import android.os.Binder;
     28 import android.os.Bundle;
     29 
     30 import java.util.List;
     31 
     32 public class UtilsProvider extends ContentProvider {
     33     public static final Uri URI = Uri.parse("content://com.android.cts.permissiondeclareapp/");
     34 
     35     public static final String ACTION_GRANT_URI = "grantUri";
     36     public static final String ACTION_REVOKE_URI = "revokeUri";
     37     public static final String ACTION_START_ACTIVITY = "startActivity";
     38     public static final String ACTION_START_SERVICE = "startService";
     39     public static final String ACTION_VERIFY_OUTGOING_PERSISTED = "verifyOutgoingPersisted";
     40     public static final String ACTION_SET_PRIMARY_CLIP = "setPrimaryClip";
     41     public static final String ACTION_CLEAR_PRIMARY_CLIP = "clearPrimaryClip";
     42     public static final String ACTION_SET_INSTALLER_PACKAGE_NAME = "setInstallerPackageName";
     43 
     44     public static final String EXTRA_PACKAGE_NAME = "packageName";
     45     public static final String EXTRA_INSTALLER_PACKAGE_NAME = "installerPackageName";
     46     public static final String EXTRA_INTENT = Intent.EXTRA_INTENT;
     47     public static final String EXTRA_URI = "uri";
     48     public static final String EXTRA_MODE = "mode";
     49 
     50     @Override
     51     public Bundle call(String method, String arg, Bundle extras) {
     52         final Context context = getContext();
     53         final Intent intent = extras.getParcelable(Intent.EXTRA_INTENT);
     54         final String action = intent.getAction();
     55 
     56         final long token = Binder.clearCallingIdentity();
     57         try {
     58             if (ACTION_GRANT_URI.equals(action)) {
     59                 final Uri uri = intent.getParcelableExtra(EXTRA_URI);
     60                 context.grantUriPermission(intent.getStringExtra(EXTRA_PACKAGE_NAME), uri,
     61                         intent.getIntExtra(EXTRA_MODE, 0));
     62 
     63             } else if (ACTION_REVOKE_URI.equals(action)) {
     64                 final Uri uri = intent.getParcelableExtra(EXTRA_URI);
     65                 context.revokeUriPermission(uri, intent.getIntExtra(EXTRA_MODE, 0));
     66 
     67             } else if (ACTION_START_ACTIVITY.equals(action)) {
     68                 final Intent newIntent = intent.getParcelableExtra(EXTRA_INTENT);
     69                 newIntent.addFlags(Intent.FLAG_ACTIVITY_NEW_TASK);
     70                 context.startActivity(newIntent);
     71 
     72             } else if (ACTION_START_SERVICE.equals(action)) {
     73                 final Intent newIntent = intent.getParcelableExtra(EXTRA_INTENT);
     74                 context.startService(newIntent);
     75 
     76             } else if (ACTION_VERIFY_OUTGOING_PERSISTED.equals(action)) {
     77                 verifyOutgoingPersisted(context, intent);
     78 
     79             } else if (ACTION_SET_PRIMARY_CLIP.equals(action)) {
     80                 context.getSystemService(ClipboardManager.class)
     81                         .setPrimaryClip(intent.getClipData());
     82 
     83             } else if (ACTION_CLEAR_PRIMARY_CLIP.equals(action)) {
     84                 context.getSystemService(ClipboardManager.class).clearPrimaryClip();
     85 
     86             } else if (ACTION_SET_INSTALLER_PACKAGE_NAME.equals(action)) {
     87                 context.getPackageManager().setInstallerPackageName(
     88                         intent.getStringExtra(EXTRA_PACKAGE_NAME),
     89                         intent.getStringExtra(EXTRA_INSTALLER_PACKAGE_NAME));
     90             }
     91         } finally {
     92             Binder.restoreCallingIdentity(token);
     93         }
     94         return null;
     95     }
     96 
     97     private void verifyOutgoingPersisted(Context context, Intent intent) {
     98         final Uri uri = intent.getParcelableExtra(EXTRA_URI);
     99         final List<UriPermission> perms = context.getContentResolver()
    100                 .getOutgoingPersistedUriPermissions();
    101         if (uri != null) {
    102             // Should have a single persisted perm
    103             if (perms.size() != 1) {
    104                 throw new SecurityException("Missing grant");
    105             }
    106             final UriPermission perm = perms.get(0);
    107             if (!perm.getUri().equals(uri)) {
    108                 throw new SecurityException(
    109                         "Expected " + uri + " but found " + perm.getUri());
    110             }
    111         } else {
    112             // Should have zero persisted perms
    113             if (perms.size() != 0) {
    114                 throw new SecurityException("Unexpected grant");
    115             }
    116         }
    117     }
    118 
    119     @Override
    120     public boolean onCreate() {
    121         return true;
    122     }
    123 
    124     @Override
    125     public Cursor query(Uri uri, String[] projection, String selection, String[] selectionArgs,
    126             String sortOrder) {
    127         throw new UnsupportedOperationException();
    128     }
    129 
    130     @Override
    131     public String getType(Uri uri) {
    132         throw new UnsupportedOperationException();
    133     }
    134 
    135     @Override
    136     public Uri insert(Uri uri, ContentValues values) {
    137         throw new UnsupportedOperationException();
    138     }
    139 
    140     @Override
    141     public int delete(Uri uri, String selection, String[] selectionArgs) {
    142         throw new UnsupportedOperationException();
    143     }
    144 
    145     @Override
    146     public int update(Uri uri, ContentValues values, String selection, String[] selectionArgs) {
    147         throw new UnsupportedOperationException();
    148     }
    149 }
    150