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 com.android.statementservice.retriever; 18 19 import java.util.HashSet; 20 import java.util.Set; 21 22 /** 23 * Match assets that have the same 'package_name' field and have at least one common certificate 24 * fingerprint in 'sha256_cert_fingerprints' field. 25 */ 26 /* package private */ final class AndroidAppAssetMatcher extends AbstractAssetMatcher { 27 28 private final AndroidAppAsset mQuery; 29 AndroidAppAssetMatcher(AndroidAppAsset query)30 public AndroidAppAssetMatcher(AndroidAppAsset query) { 31 mQuery = query; 32 } 33 34 @Override matches(AbstractAsset asset)35 public boolean matches(AbstractAsset asset) { 36 if (asset instanceof AndroidAppAsset) { 37 AndroidAppAsset androidAppAsset = (AndroidAppAsset) asset; 38 if (!androidAppAsset.getPackageName().equals(mQuery.getPackageName())) { 39 return false; 40 } 41 42 Set<String> certs = new HashSet<String>(mQuery.getCertFingerprints()); 43 for (String cert : androidAppAsset.getCertFingerprints()) { 44 if (certs.contains(cert)) { 45 return true; 46 } 47 } 48 } 49 return false; 50 } 51 52 @Override getMatchedLookupKey()53 public int getMatchedLookupKey() { 54 return mQuery.lookupKey(); 55 } 56 } 57