Merge "Limit lengths of fields in Condition to a max length." into tm-dev am:... (2a1ec6be) · Commits · e / os / android_frameworks_base

core/java/android/service/notification/Condition.java

+34 −4

Original line number	Diff line number	Diff line
		@@ -90,6 +90,12 @@ public final class Condition implements Parcelable {
		public final int flags;
		public final int icon;

		/**
		* The maximum string length for any string contained in this condition.
		* @hide
		*/
		public static final int MAX_STRING_LENGTH = 1000;

		/**
		* An object representing the current state of a {@link android.app.AutomaticZenRule}.
		* @param id the {@link android.app.AutomaticZenRule#getConditionId()} of the zen rule
		@@ -104,16 +110,19 @@ public final class Condition implements Parcelable {
		if (id == null) throw new IllegalArgumentException("id is required");
		if (summary == null) throw new IllegalArgumentException("summary is required");
		if (!isValidState(state)) throw new IllegalArgumentException("state is invalid: " + state);
		this.id = id;
		this.summary = summary;
		this.line1 = line1;
		this.line2 = line2;
		this.id = getTrimmedUri(id);
		this.summary = getTrimmedString(summary);
		this.line1 = getTrimmedString(line1);
		this.line2 = getTrimmedString(line2);
		this.icon = icon;
		this.state = state;
		this.flags = flags;
		}

		public Condition(Parcel source) {
		// This constructor passes all fields directly into the constructor that takes all the
		// fields as arguments; that constructor will trim each of the input strings to
		// max length if necessary.
		this((Uri)source.readParcelable(Condition.class.getClassLoader(), android.net.Uri.class),
		source.readString(),
		source.readString(),
		@@ -240,4 +249,25 @@ public final class Condition implements Parcelable {
		return new Condition[size];
		}
		};

		/**
		* Returns a truncated copy of the string if the string is longer than MAX_STRING_LENGTH.
		*/
		private static String getTrimmedString(String input) {
		if (input != null && input.length() > MAX_STRING_LENGTH) {
		return input.substring(0, MAX_STRING_LENGTH);
		}
		return input;
		}

		/**
		* Returns a truncated copy of the Uri by trimming the string representation to the maximum
		* string length.
		*/
		private static Uri getTrimmedUri(Uri input) {
		if (input != null && input.toString().length() > MAX_STRING_LENGTH) {
		return Uri.parse(getTrimmedString(input.toString()));
		}
		return input;
		}
		}

core/tests/coretests/src/android/service/notification/ConditionTest.java

0 → 100644

+101 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2022 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 android.service.notification;

		import static junit.framework.Assert.assertEquals;
		import static junit.framework.Assert.fail;

		import android.net.Uri;
		import android.os.Parcel;

		import androidx.test.ext.junit.runners.AndroidJUnit4;
		import androidx.test.filters.SmallTest;

		import com.google.common.base.Strings;

		import org.junit.Test;
		import org.junit.runner.RunWith;

		import java.lang.reflect.Field;

		@RunWith(AndroidJUnit4.class)
		@SmallTest
		public class ConditionTest {
		private static final String CLASS = "android.service.notification.Condition";

		@Test
		public void testLongFields_inConstructors() {
		String longString = Strings.repeat("A", 65536);
		Uri longUri = Uri.parse("uri://" + Strings.repeat("A", 65530));

		// Confirm strings are truncated via short constructor
		Condition cond1 = new Condition(longUri, longString, Condition.STATE_TRUE);

		assertEquals(Condition.MAX_STRING_LENGTH, cond1.id.toString().length());
		assertEquals(Condition.MAX_STRING_LENGTH, cond1.summary.length());

		// Confirm strings are truncated via long constructor
		Condition cond2 = new Condition(longUri, longString, longString, longString,
		-1, Condition.STATE_TRUE, Condition.FLAG_RELEVANT_ALWAYS);

		assertEquals(Condition.MAX_STRING_LENGTH, cond2.id.toString().length());
		assertEquals(Condition.MAX_STRING_LENGTH, cond2.summary.length());
		assertEquals(Condition.MAX_STRING_LENGTH, cond2.line1.length());
		assertEquals(Condition.MAX_STRING_LENGTH, cond2.line2.length());
		}

		@Test
		public void testLongFields_viaParcel() {
		// Set fields via reflection to force them to be long, then parcel and unparcel to make sure
		// it gets truncated upon unparcelling.
		Condition cond = new Condition(Uri.parse("uri://placeholder"), "placeholder",
		Condition.STATE_TRUE);

		try {
		String longString = Strings.repeat("A", 65536);
		Uri longUri = Uri.parse("uri://" + Strings.repeat("A", 65530));
		Field id = Class.forName(CLASS).getDeclaredField("id");
		id.setAccessible(true);
		id.set(cond, longUri);
		Field summary = Class.forName(CLASS).getDeclaredField("summary");
		summary.setAccessible(true);
		summary.set(cond, longString);
		Field line1 = Class.forName(CLASS).getDeclaredField("line1");
		line1.setAccessible(true);
		line1.set(cond, longString);
		Field line2 = Class.forName(CLASS).getDeclaredField("line2");
		line2.setAccessible(true);
		line2.set(cond, longString);
		} catch (NoSuchFieldException e) {
		fail(e.toString());
		} catch (ClassNotFoundException e) {
		fail(e.toString());
		} catch (IllegalAccessException e) {
		fail(e.toString());
		}

		Parcel parcel = Parcel.obtain();
		cond.writeToParcel(parcel, 0);
		parcel.setDataPosition(0);

		Condition fromParcel = new Condition(parcel);
		assertEquals(Condition.MAX_STRING_LENGTH, fromParcel.id.toString().length());
		assertEquals(Condition.MAX_STRING_LENGTH, fromParcel.summary.length());
		assertEquals(Condition.MAX_STRING_LENGTH, fromParcel.line1.length());
		assertEquals(Condition.MAX_STRING_LENGTH, fromParcel.line2.length());
		}
		}