| /* |
| * Copyright (C) 2011 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.providers.contacts; |
| |
| import android.content.Context; |
| import android.os.Binder; |
| import android.telecom.TelecomManager; |
| import android.telephony.TelephonyManager; |
| import android.text.TextUtils; |
| |
| import com.android.providers.contacts.util.ContactsPermissions; |
| |
| /** |
| * Provides method related to check various voicemail permissions under the |
| * specified context. |
| * <p> This is an immutable object. |
| */ |
| public class VoicemailPermissions { |
| private final Context mContext; |
| |
| public VoicemailPermissions(Context context) { |
| mContext = context; |
| } |
| |
| /** Determines if the calling process has access to its own voicemails. */ |
| public boolean callerHasOwnVoicemailAccess() { |
| return callerHasPermission(android.Manifest.permission.ADD_VOICEMAIL) |
| || callerHasCarrierPrivileges(); |
| } |
| |
| private boolean isDefaultOrSystemDialer(String callingPackage) { |
| // Note: Mimics previous dependency on DefaultDialerManager; that code just returns false |
| // here if the calling package is empty. |
| if (TextUtils.isEmpty(callingPackage)) { |
| return false; |
| } |
| TelecomManager tm = mContext.getSystemService(TelecomManager.class); |
| return (callingPackage.equals(tm.getDefaultDialerPackage()) |
| || callingPackage.equals(tm.getSystemDialerPackage())); |
| } |
| |
| /** Determine if the calling process has full read access to all voicemails. */ |
| public boolean callerHasReadAccess(String callingPackage) { |
| if (isDefaultOrSystemDialer(callingPackage)) { |
| return true; |
| } |
| return callerHasPermission(android.Manifest.permission.READ_VOICEMAIL); |
| } |
| |
| /** Determine if the calling process has the permission required to update and remove all |
| * voicemails */ |
| public boolean callerHasWriteAccess(String callingPackage) { |
| if (isDefaultOrSystemDialer(callingPackage)) { |
| return true; |
| } |
| return callerHasPermission(android.Manifest.permission.WRITE_VOICEMAIL); |
| } |
| |
| /** |
| * Checks that the caller has permissions to access its own voicemails. |
| * |
| * @throws SecurityException if the caller does not have the voicemail source permission. |
| */ |
| public void checkCallerHasOwnVoicemailAccess() { |
| if (!callerHasOwnVoicemailAccess()) { |
| throw new SecurityException("The caller must have permission: " + |
| android.Manifest.permission.ADD_VOICEMAIL + " or carrier privileges"); |
| } |
| } |
| |
| /** |
| * Checks that the caller has permissions to read ALL voicemails. |
| * |
| * @throws SecurityException if the caller does not have the voicemail source permission. |
| */ |
| public void checkCallerHasReadAccess(String callingPackage) { |
| if (!callerHasReadAccess(callingPackage)) { |
| throw new SecurityException(String.format("The caller must be the default or system " |
| + "dialer, or have the system-only %s permission: ", |
| android.Manifest.permission.READ_VOICEMAIL)); |
| } |
| } |
| |
| public void checkCallerHasWriteAccess(String callingPackage) { |
| if (!callerHasWriteAccess(callingPackage)) { |
| throw new SecurityException(String.format("The caller must be the default or system " |
| + "dialer, or have the system-only %s permission: ", |
| android.Manifest.permission.WRITE_VOICEMAIL)); |
| } |
| } |
| |
| /** Determines if the given package has access to its own voicemails. */ |
| public boolean packageHasOwnVoicemailAccess(String packageName) { |
| return packageHasPermission(packageName, |
| android.Manifest.permission.ADD_VOICEMAIL) |
| || packageHasCarrierPrivileges(packageName); |
| } |
| |
| /** Determines if the given package has read access. */ |
| public boolean packageHasReadAccess(String packageName) { |
| return packageHasPermission(packageName, android.Manifest.permission.READ_VOICEMAIL); |
| } |
| |
| /** Determines if the given package has write access. */ |
| public boolean packageHasWriteAccess(String packageName) { |
| return packageHasPermission(packageName, android.Manifest.permission.WRITE_VOICEMAIL); |
| } |
| |
| /** Determines if the given package has the given permission. */ |
| private boolean packageHasPermission(String packageName, String permission) { |
| return ContactsPermissions.hasPackagePermission(mContext, permission, packageName); |
| } |
| |
| /** Determines if the calling process has the given permission. */ |
| private boolean callerHasPermission(String permission) { |
| return ContactsPermissions.hasCallerOrSelfPermission(mContext, permission); |
| } |
| |
| /** Determines if the calling process has carrier privileges. */ |
| public boolean callerHasCarrierPrivileges() { |
| TelephonyManager tm = |
| (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); |
| String[] packages = mContext.getPackageManager().getPackagesForUid(Binder.getCallingUid()); |
| for (String packageName : packages) { |
| if (packageHasCarrierPrivileges(tm, packageName)) { |
| return true; |
| } |
| } |
| return false; |
| } |
| |
| /** Determines if the given package has carrier privileges. */ |
| private boolean packageHasCarrierPrivileges(String packageName) { |
| TelephonyManager tm = |
| (TelephonyManager) mContext.getSystemService(Context.TELEPHONY_SERVICE); |
| return packageHasCarrierPrivileges(tm, packageName); |
| } |
| |
| private static boolean packageHasCarrierPrivileges(TelephonyManager tm, String packageName) { |
| return tm.checkCarrierPrivilegesForPackageAnyPhone(packageName) |
| == TelephonyManager.CARRIER_PRIVILEGE_STATUS_HAS_ACCESS; |
| } |
| } |