Update statementservice assetlink.json parsing (9a55bf35) · Commits · e / os / android_frameworks_base

packages/StatementService/Android.bp

+1 −0

Original line number	Diff line number	Diff line
		@@ -35,6 +35,7 @@ android_app {
		privileged: true,
		certificate: "platform",
		static_libs: [
		"StatementServiceParser",
		"androidx.appcompat_appcompat",
		"androidx.collection_collection-ktx",
		"androidx.work_work-runtime",

packages/StatementService/src/com/android/statementservice/network/retriever/StatementParser.kt

+35 −1

Original line number	Diff line number	Diff line
		@@ -28,6 +28,8 @@ import java.io.StringReader
		import java.util.ArrayList
		import com.android.statementservice.retriever.WebAsset
		import com.android.statementservice.retriever.AndroidAppAsset
		import com.android.statementservice.retriever.DynamicAppLinkComponent
		import org.json.JSONObject

		/**
		* Parses JSON from the Digital Asset Links specification. For examples, see [WebAsset],
		@@ -97,13 +99,45 @@ object StatementParser {
		FIELD_NOT_ARRAY_FORMAT_STRING.format(StatementUtils.ASSET_DESCRIPTOR_FIELD_RELATION)
		)
		val target = AssetFactory.create(targetObject)
		val dynamicAppLinkComponents = parseDynamicAppLinkComponents(
		statement.optJSONObject(StatementUtils.ASSET_DESCRIPTOR_FIELD_RELATION_EXTENSIONS)
		)

		val statements = (0 until relations.length())
		.map { relations.getString(it) }
		.map(Relation::create)
		.map { Statement.create(source, target, it) }
		.map { Statement.create(source, target, it, dynamicAppLinkComponents) }
		return Result.Success(ParsedStatement(statements, listOfNotNull(delegate)))
		}

		private fun parseDynamicAppLinkComponents(
		statement: JSONObject?
		): List<DynamicAppLinkComponent> {
		val relationExtensions = statement?.optJSONObject(
		StatementUtils.ASSET_DESCRIPTOR_FIELD_RELATION_EXTENSIONS
		) ?: return emptyList()
		val handleAllUrlsRelationExtension = relationExtensions.optJSONObject(
		StatementUtils.RELATION.toString()
		) ?: return emptyList()
		val components = handleAllUrlsRelationExtension.optJSONArray(
		StatementUtils.RELATION_EXTENSION_FIELD_DAL_COMPONENTS
		) ?: return emptyList()

		return (0 until components.length())
		.map { components.getJSONObject(it) }
		.map { parseComponent(it) }
		}

		private fun parseComponent(component: JSONObject): DynamicAppLinkComponent {
		val query = component.optJSONObject("?")
		return DynamicAppLinkComponent.create(
		component.optBoolean("exclude", false),
		component.optString("#"),
		component.optString("/"),
		query?.keys()?.asSequence()?.associateWith { query.getString(it) },
		component.optString("comments")
		)
		}

		data class ParsedStatement(val statements: List<Statement>, val delegates: List<String>)
		}

packages/StatementService/src/com/android/statementservice/retriever/DynamicAppLinkComponent.java

0 → 100644

+145 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2024 The Android Open Source Project
		*
		* Licensed under the Apache License, Version 2.0 (the "License");
		* you may not use this file except in compliance with the License.
		* You may obtain a copy of the License at
		*
		* http://www.apache.org/licenses/LICENSE-2.0
		*
		* Unless required by applicable law or agreed to in writing, software
		* distributed under the License is distributed on an "AS IS" BASIS,
		* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
		* See the License for the specific language governing permissions and
		* limitations under the License.
		*/

		package com.android.statementservice.retriever;

		import android.annotation.Nullable;

		import java.util.Map;

		/**
		* A immutable value type representing a dynamic app link component
		*/
		public final class DynamicAppLinkComponent {
		private final boolean mExclude;
		private final String mFragment;
		private final String mPath;
		private final Map<String, String> mQuery;
		private final String mComments;

		private DynamicAppLinkComponent(boolean exclude, String fragment, String path,
		Map<String, String> query, String comments) {
		mExclude = exclude;
		mFragment = fragment;
		mPath = path;
		mQuery = query;
		mComments = comments;
		}

		/**
		* Returns true or false indicating whether this rule should be a exclusion rule.
		*/
		public boolean getExclude() {
		return mExclude;
		}

		/**
		* Returns a optional pattern string for matching URL fragments.
		*/
		@Nullable
		public String getFragment() {
		return mFragment;
		}

		/**
		* Returns a optional pattern string for matching URL paths.
		*/
		@Nullable
		public String getPath() {
		return mPath;
		}

		/**
		* Returns a optional pattern string for matching a single key-value pair in the URL query
		* params.
		*/
		@Nullable
		public Map<String, String> getQuery() {
		return mQuery;
		}

		/**
		* Returns a optional comment string for this component.
		*/
		@Nullable
		public String getComments() {
		return mComments;
		}

		/**
		* Creates a new DynamicAppLinkComponent object.
		*/
		public static DynamicAppLinkComponent create(boolean exclude, String fragment, String path,
		Map<String, String> query, String comments) {
		return new DynamicAppLinkComponent(exclude, fragment, path, query, comments);
		}

		@Override
		public boolean equals(Object o) {
		if (this == o) {
		return true;
		}
		if (o == null \|\| getClass() != o.getClass()) {
		return false;
		}

		DynamicAppLinkComponent rule = (DynamicAppLinkComponent) o;

		if (mExclude != rule.mExclude) {
		return false;
		}
		if (!mFragment.equals(rule.mFragment)) {
		return false;
		}
		if (!mPath.equals(rule.mPath)) {
		return false;
		}
		if (!mQuery.equals(rule.mQuery)) {
		return false;
		}
		if (!mComments.equals(rule.mComments)) {
		return false;
		}

		return true;
		}

		@Override
		public int hashCode() {
		int result = Boolean.hashCode(mExclude);
		result = 31 * result + mFragment.hashCode();
		result = 31 * result + mPath.hashCode();
		result = 31 * result + mQuery.hashCode();
		result = 31 * result + mComments.hashCode();
		return result;
		}

		@Override
		public String toString() {
		StringBuilder statement = new StringBuilder();
		statement.append("HandleAllUriRule: ");
		statement.append(mExclude);
		statement.append(", ");
		statement.append(mFragment);
		statement.append(", ");
		statement.append(mPath);
		statement.append(", ");
		statement.append(mQuery);
		statement.append(", ");
		statement.append(mComments);
		return statement.toString();
		}
		}

packages/StatementService/src/com/android/statementservice/retriever/JsonParser.java

+0 −6

Original line number	Diff line number	Diff line
		@@ -46,12 +46,6 @@ public final class JsonParser {
		while (reader.hasNext()) {
		String fieldName = reader.nextName();

		if (output.has(fieldName)) {
		errorMsg = "Duplicate field name.";
		reader.skipValue();
		continue;
		}

		JsonToken token = reader.peek();
		if (token.equals(JsonToken.BEGIN_ARRAY)) {
		output.put(fieldName, new JSONArray(parseArray(reader)));

packages/StatementService/src/com/android/statementservice/retriever/Statement.java

+46 −5

Original line number	Diff line number	Diff line
		@@ -23,6 +23,10 @@ import com.android.statementservice.network.retriever.StatementRetriever;

		import kotlin.coroutines.Continuation;

		import java.util.Collections;
		import java.util.List;


		/**
		* An immutable value type representing a statement, consisting of a source, target, and relation.
		* This reflects an assertion that the relation holds for the source, target pair. For example, if a
		@@ -32,7 +36,21 @@ import kotlin.coroutines.Continuation;
		* {
		* "relation": ["delegate_permission/common.handle_all_urls"],
		* "target" : {"namespace": "android_app", "package_name": "com.example.app",
		* "sha256_cert_fingerprints": ["00:11:22:33"] }
		* "sha256_cert_fingerprints": ["00:11:22:33"] },
		* "relation_extensions": {
		* "delegate_permission/common_handle_all_urls": {
		* "dynamic_app_link_components": [
		* {
		* "/": "/foo*",
		* "exclude": true,
		* "comments": "App should not handle paths that start with foo"
		* },
		* {
		* "/": "*",
		* "comments": "Catch all other paths"
		* }
		* ]
		* }
		* }
		* </pre>
		*
		@@ -40,7 +58,7 @@ import kotlin.coroutines.Continuation;
		* return a {@link Statement} with {@link #getSource} equal to the input parameter,
		* {@link #getRelation} equal to
		*
		* <pre>Relation.create("delegate_permission", "common.get_login_creds");</pre>
		* <pre>Relation.create("delegate_permission", "common.handle_all_urls");</pre>
		*
		* and with {@link #getTarget} equal to
		*
		@@ -48,17 +66,23 @@ import kotlin.coroutines.Continuation;
		* + "\"package_name\": \"com.example.app\"}"
		* + "\"sha256_cert_fingerprints\": \"[\"00:11:22:33\"]\"}");
		* </pre>
		*
		* If extensions exist for the handle_all_urls relation then {@link #getDynamicAppLinkComponents}
		* will return a list of parsed {@link DynamicAppLinkComponent}s.
		*/
		public final class Statement {

		private final AbstractAsset mTarget;
		private final Relation mRelation;
		private final AbstractAsset mSource;
		private final List<DynamicAppLinkComponent> mDynamicAppLinkComponents;

		private Statement(AbstractAsset source, AbstractAsset target, Relation relation) {
		private Statement(AbstractAsset source, AbstractAsset target, Relation relation,
		List<DynamicAppLinkComponent> components) {
		mSource = source;
		mTarget = target;
		mRelation = relation;
		mDynamicAppLinkComponents = Collections.unmodifiableList(components);
		}

		/**
		@@ -85,6 +109,14 @@ public final class Statement {
		return mRelation;
		}

		/**
		* Returns the relation matching rules of the statement.
		*/
		@NonNull
		public List<DynamicAppLinkComponent> getDynamicAppLinkComponents() {
		return mDynamicAppLinkComponents;
		}

		/**
		* Creates a new Statement object for the specified target asset and relation. For example:
		* <pre>
		@@ -95,8 +127,9 @@ public final class Statement {
		* </pre>
		*/
		public static Statement create(@NonNull AbstractAsset source, @NonNull AbstractAsset target,
		@NonNull Relation relation) {
		return new Statement(source, target, relation);
		@NonNull Relation relation,
		@NonNull List<DynamicAppLinkComponent> components) {
		return new Statement(source, target, relation, components);
		}

		@Override
		@@ -119,6 +152,9 @@ public final class Statement {
		if (!mSource.equals(statement.mSource)) {
		return false;
		}
		if (!mDynamicAppLinkComponents.equals(statement.mDynamicAppLinkComponents)) {
		return false;
		}

		return true;
		}
		@@ -128,6 +164,7 @@ public final class Statement {
		int result = mTarget.hashCode();
		result = 31 * result + mRelation.hashCode();
		result = 31 * result + mSource.hashCode();
		result = 31 * result + mDynamicAppLinkComponents.hashCode();
		return result;
		}

		@@ -140,6 +177,10 @@ public final class Statement {
		statement.append(mTarget);
		statement.append(", ");
		statement.append(mRelation);
		if (!mDynamicAppLinkComponents.isEmpty()) {
		statement.append(", ");
		statement.append(mDynamicAppLinkComponents);
		}
		return statement.toString();
		}
		}