| // Copyright 2013 The Flutter Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style license that can be |
| // found in the LICENSE file. |
| |
| package io.flutter.embedding.engine.loader; |
| |
| import android.content.Context; |
| import android.content.pm.ApplicationInfo; |
| import android.content.pm.PackageManager; |
| import android.content.res.XmlResourceParser; |
| import android.os.Bundle; |
| import android.security.NetworkSecurityPolicy; |
| import androidx.annotation.NonNull; |
| import java.io.IOException; |
| import org.json.JSONArray; |
| import org.xmlpull.v1.XmlPullParserException; |
| |
| /** Loads application information given a Context. */ |
| public final class ApplicationInfoLoader { |
| // XML Attribute keys supported in AndroidManifest.xml |
| public static final String PUBLIC_AOT_SHARED_LIBRARY_NAME = |
| FlutterLoader.class.getName() + '.' + FlutterLoader.AOT_SHARED_LIBRARY_NAME; |
| public static final String PUBLIC_VM_SNAPSHOT_DATA_KEY = |
| FlutterLoader.class.getName() + '.' + FlutterLoader.VM_SNAPSHOT_DATA_KEY; |
| public static final String PUBLIC_ISOLATE_SNAPSHOT_DATA_KEY = |
| FlutterLoader.class.getName() + '.' + FlutterLoader.ISOLATE_SNAPSHOT_DATA_KEY; |
| public static final String PUBLIC_FLUTTER_ASSETS_DIR_KEY = |
| FlutterLoader.class.getName() + '.' + FlutterLoader.FLUTTER_ASSETS_DIR_KEY; |
| public static final String NETWORK_POLICY_METADATA_KEY = "io.flutter.network-policy"; |
| public static final String PUBLIC_AUTOMATICALLY_REGISTER_PLUGINS_METADATA_KEY = |
| "io.flutter." + FlutterLoader.AUTOMATICALLY_REGISTER_PLUGINS_KEY; |
| |
| @NonNull |
| private static ApplicationInfo getApplicationInfo(@NonNull Context applicationContext) { |
| try { |
| return applicationContext |
| .getPackageManager() |
| .getApplicationInfo(applicationContext.getPackageName(), PackageManager.GET_META_DATA); |
| } catch (PackageManager.NameNotFoundException e) { |
| throw new RuntimeException(e); |
| } |
| } |
| |
| private static String getString(Bundle metadata, String key) { |
| if (metadata == null) { |
| return null; |
| } |
| return metadata.getString(key, null); |
| } |
| |
| private static boolean getBoolean(Bundle metadata, String key, boolean defaultValue) { |
| if (metadata == null) { |
| return defaultValue; |
| } |
| return metadata.getBoolean(key, defaultValue); |
| } |
| |
| private static String getNetworkPolicy(ApplicationInfo appInfo, Context context) { |
| // We cannot use reflection to look at networkSecurityConfigRes because |
| // Android throws an error when we try to access fields marked as @hide. |
| // Instead we rely on metadata. |
| Bundle metadata = appInfo.metaData; |
| if (metadata == null) { |
| return null; |
| } |
| |
| int networkSecurityConfigRes = metadata.getInt(NETWORK_POLICY_METADATA_KEY, 0); |
| if (networkSecurityConfigRes <= 0) { |
| return null; |
| } |
| |
| JSONArray output = new JSONArray(); |
| try { |
| XmlResourceParser xrp = context.getResources().getXml(networkSecurityConfigRes); |
| xrp.next(); |
| int eventType = xrp.getEventType(); |
| while (eventType != XmlResourceParser.END_DOCUMENT) { |
| if (eventType == XmlResourceParser.START_TAG) { |
| if (xrp.getName().equals("domain-config")) { |
| parseDomainConfig(xrp, output, false); |
| } |
| } |
| eventType = xrp.next(); |
| } |
| } catch (IOException | XmlPullParserException e) { |
| return null; |
| } |
| return output.toString(); |
| } |
| |
| private static void parseDomainConfig( |
| XmlResourceParser xrp, JSONArray output, boolean inheritedCleartextPermitted) |
| throws IOException, XmlPullParserException { |
| boolean cleartextTrafficPermitted = |
| xrp.getAttributeBooleanValue( |
| null, "cleartextTrafficPermitted", inheritedCleartextPermitted); |
| while (true) { |
| int eventType = xrp.next(); |
| if (eventType == XmlResourceParser.START_TAG) { |
| if (xrp.getName().equals("domain")) { |
| // There can be multiple domains. |
| parseDomain(xrp, output, cleartextTrafficPermitted); |
| } else if (xrp.getName().equals("domain-config")) { |
| parseDomainConfig(xrp, output, cleartextTrafficPermitted); |
| } else { |
| skipTag(xrp); |
| } |
| } else if (eventType == XmlResourceParser.END_TAG) { |
| break; |
| } |
| } |
| } |
| |
| private static void skipTag(XmlResourceParser xrp) throws IOException, XmlPullParserException { |
| String name = xrp.getName(); |
| int eventType = xrp.getEventType(); |
| while (eventType != XmlResourceParser.END_TAG || xrp.getName() != name) { |
| eventType = xrp.next(); |
| } |
| } |
| |
| private static void parseDomain( |
| XmlResourceParser xrp, JSONArray output, boolean cleartextPermitted) |
| throws IOException, XmlPullParserException { |
| boolean includeSubDomains = xrp.getAttributeBooleanValue(null, "includeSubdomains", false); |
| xrp.next(); |
| if (xrp.getEventType() != XmlResourceParser.TEXT) { |
| throw new IllegalStateException("Expected text"); |
| } |
| String domain = xrp.getText().trim(); |
| JSONArray outputArray = new JSONArray(); |
| outputArray.put(domain); |
| outputArray.put(includeSubDomains); |
| outputArray.put(cleartextPermitted); |
| output.put(outputArray); |
| xrp.next(); |
| if (xrp.getEventType() != XmlResourceParser.END_TAG) { |
| throw new IllegalStateException("Expected end of domain tag"); |
| } |
| } |
| |
| /** |
| * Initialize our Flutter config values by obtaining them from the manifest XML file, falling back |
| * to default values. |
| */ |
| @NonNull |
| public static FlutterApplicationInfo load(@NonNull Context applicationContext) { |
| ApplicationInfo appInfo = getApplicationInfo(applicationContext); |
| // Prior to API 23, cleartext traffic is allowed. |
| boolean clearTextPermitted = true; |
| if (android.os.Build.VERSION.SDK_INT >= 23) { |
| clearTextPermitted = NetworkSecurityPolicy.getInstance().isCleartextTrafficPermitted(); |
| } |
| |
| return new FlutterApplicationInfo( |
| getString(appInfo.metaData, PUBLIC_AOT_SHARED_LIBRARY_NAME), |
| getString(appInfo.metaData, PUBLIC_VM_SNAPSHOT_DATA_KEY), |
| getString(appInfo.metaData, PUBLIC_ISOLATE_SNAPSHOT_DATA_KEY), |
| getString(appInfo.metaData, PUBLIC_FLUTTER_ASSETS_DIR_KEY), |
| getNetworkPolicy(appInfo, applicationContext), |
| appInfo.nativeLibraryDir, |
| clearTextPermitted, |
| getBoolean(appInfo.metaData, PUBLIC_AUTOMATICALLY_REGISTER_PLUGINS_METADATA_KEY, true)); |
| } |
| } |