1 /* 2 * Copyright (C) 2015 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 android.security.net.config; 18 19 import android.os.Environment; 20 import android.os.UserHandle; 21 22 import com.android.internal.util.ArrayUtils; 23 24 import java.io.File; 25 26 /** 27 * {@link CertificateSource} based on the system trusted CA store. 28 * @hide 29 */ 30 public final class SystemCertificateSource extends DirectoryCertificateSource { 31 private static class NoPreloadHolder { 32 private static final SystemCertificateSource INSTANCE = new SystemCertificateSource(); 33 } 34 35 private final File mUserRemovedCaDir; 36 SystemCertificateSource()37 private SystemCertificateSource() { 38 super(getDirectory()); 39 File configDir = Environment.getUserConfigDirectory(UserHandle.myUserId()); 40 mUserRemovedCaDir = new File(configDir, "cacerts-removed"); 41 } 42 getDirectory()43 private static File getDirectory() { 44 if ((System.getProperty("system.certs.enabled") != null) 45 && (System.getProperty("system.certs.enabled")).equals("true")) { 46 return new File(System.getenv("ANDROID_ROOT") + "/etc/security/cacerts"); 47 } 48 File updatable_dir = new File("/apex/com.android.conscrypt/cacerts"); 49 if (updatable_dir.exists() 50 && !(ArrayUtils.isEmpty(updatable_dir.list()))) { 51 return updatable_dir; 52 } 53 return new File(System.getenv("ANDROID_ROOT") + "/etc/security/cacerts"); 54 } 55 getInstance()56 public static SystemCertificateSource getInstance() { 57 return NoPreloadHolder.INSTANCE; 58 } 59 60 @Override isCertMarkedAsRemoved(String caFile)61 protected boolean isCertMarkedAsRemoved(String caFile) { 62 return new File(mUserRemovedCaDir, caFile).exists(); 63 } 64 } 65