This commit adds a verifier that verifies a host delegates permission for an app to handle Url for the host using the Statement protocol. - Implements the Statement protocol -- The protocol defines a file format that represents statements. -- The protocol defines where each asset type should put their statement declaration. For web asset, the statement file should be hosted at <scheme>://<host>:<port>/.well-known/associations.json. - Implements IntentFilterVerificationReceiver, an interface between StatementService and PackageManager. PackageManager will send a broadcast with action Intent.ACTION_INTENT_FILTER_NEEDS_VERIFICATION. The service will process the request and returns the results by calling PackageManager.verifyIntentFilter(). To verify an IntentFilter like this defined in Android app com.test.app <intent-filter> <data android:scheme="https" /> <data android:host="www.test.com" /> <data android:pathPattern=".*"/> </intent-filter> The service will try to retrieve the statement file from https://www.test.com:443/.well-known/associations.json and try to find a JSON object equivalent to {'relation': ['delegate_permission/common.handle_all_urls'], 'target': {'namespace': 'android_app', 'package_name': 'com.test.app', 'sha256_cert_fingerprints': [APP_CERT_FP]}} The entry should have the correct relation, package name, and certificate sha256 fingerprint. Because this implementation will send a HTTP request for each host specified in the intent-filter in AndroidManifest.xml, to avoid overwhelming the network at app install time, we limit the maximum number of hosts we will verify for a single app to 10. Any app with more than 10 hosts in the autoVerify=true intent-filter won't be auto verified. Change-Id: I787c9d176e4110aa441eb5fe4fa9651a071c6610
47 lines
1.3 KiB
Java
47 lines
1.3 KiB
Java
/*
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* Copyright (C) 2015 The Android Open Source Project
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* http://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package com.android.statementservice;
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import android.util.Log;
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import java.util.concurrent.Callable;
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import java.util.concurrent.ExecutionException;
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import java.util.concurrent.FutureTask;
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/**
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* {@link FutureTask} that logs unhandled exceptions.
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*/
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final class ExceptionLoggingFutureTask<V> extends FutureTask<V> {
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private final String mTag;
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public ExceptionLoggingFutureTask(Callable<V> callable, String tag) {
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super(callable);
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mTag = tag;
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}
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@Override
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protected void done() {
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try {
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get();
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} catch (ExecutionException | InterruptedException e) {
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Log.e(mTag, "Uncaught exception.", e);
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throw new RuntimeException(e);
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}
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}
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}
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