1 /* 2 * Copyright (C) 2022 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.adservices.service.measurement.util; 18 19 import android.content.Context; 20 import android.net.Uri; 21 22 import com.android.adservices.LoggerFactory; 23 import com.android.adservices.data.enrollment.EnrollmentDao; 24 import com.android.adservices.service.Flags; 25 import com.android.adservices.service.common.AppManifestConfigHelper; 26 import com.android.adservices.service.common.WebAddresses; 27 import com.android.adservices.service.enrollment.EnrollmentData; 28 29 import java.util.Optional; 30 31 /** Enrollment utilities for measurement. */ 32 public final class Enrollment { 33 public static final String LOCALHOST_ENROLLMENT_ID = "localhost_enrollment_id"; 34 public static final String LOCALHOST_IP_ENROLLMENT_ID = "localhost_ip_enrollment_id"; 35 Enrollment()36 private Enrollment() { } 37 38 /** 39 * Returns an {@code Optional<String>} of the ad-tech enrollment record ID. 40 * 41 * @param registrationUri the ad-tech URL used to register a source or trigger. 42 * @param packageName Package mame of the registrant 43 * @param enrollmentDao an instance of {@code EnrollmentDao}. 44 * @param context a valid {@code Context} object 45 * @param flags a valid {@code Flags} object 46 * @return enrollmentId if enrollment id exists and all validations pass otherwise empty 47 */ 48 // TODO(b/311183933): Remove passed in Context from static method. 49 @SuppressWarnings("AvoidStaticContext") getValidEnrollmentId( Uri registrationUri, String packageName, EnrollmentDao enrollmentDao, Context context, Flags flags)50 public static Optional<String> getValidEnrollmentId( 51 Uri registrationUri, 52 String packageName, 53 EnrollmentDao enrollmentDao, 54 Context context, 55 Flags flags) { 56 if (WebAddresses.isLocalhost(registrationUri)) { 57 return Optional.of( 58 WebAddresses.isLocalhostIp(registrationUri) 59 ? LOCALHOST_IP_ENROLLMENT_ID 60 : LOCALHOST_ENROLLMENT_ID); 61 } 62 63 Uri uriWithoutParams = registrationUri.buildUpon().clearQuery().fragment(null).build(); 64 65 EnrollmentData enrollmentData = 66 enrollmentDao.getEnrollmentDataFromMeasurementUrl(uriWithoutParams); 67 if (enrollmentData == null) { 68 LoggerFactory.getMeasurementLogger() 69 .w( 70 "Enrollment check failed, Reason: Enrollment Id Not Found, " 71 + "Registration URI: %s", 72 registrationUri); 73 return Optional.empty(); 74 } 75 if (flags.isEnrollmentBlocklisted(enrollmentData.getEnrollmentId())) { 76 LoggerFactory.getMeasurementLogger() 77 .w( 78 "Enrollment check failed, Reason: Enrollment Id in blocklist, " 79 + "Registration URI: %s, Enrollment Id: %s", 80 registrationUri, enrollmentData.getEnrollmentId()); 81 return Optional.empty(); 82 } 83 if (!AppManifestConfigHelper.isAllowedAttributionAccess( 84 packageName, enrollmentData.getEnrollmentId())) { 85 LoggerFactory.getMeasurementLogger() 86 .w( 87 "Enrollment check failed, Reason: Enrollment Id missing from " 88 + "App Manifest AdTech allowlist, " 89 + "Registration URI: %s, Enrollment Id: %s", 90 registrationUri, enrollmentData.getEnrollmentId()); 91 return Optional.empty(); 92 } 93 return Optional.of(enrollmentData.getEnrollmentId()); 94 } 95 } 96