Merge "Add PackageInstaller SessionParams restrictions" into rvc-dev am: a817a0515e (b755a233) · Commits · e / os / android_frameworks_base

core/java/android/content/pm/PackageInstaller.java

+11 −1

Original line number	Diff line number	Diff line
		@@ -1449,6 +1449,13 @@ public class PackageInstaller {
		/** {@hide} */
		public static final int UID_UNKNOWN = -1;

		/**
		* This value is derived from the maximum file name length. No package above this limit
		* can ever be successfully installed on the device.
		* @hide
		*/
		public static final int MAX_PACKAGE_NAME_LENGTH = 255;

		/** {@hide} */
		@UnsupportedAppUsage(maxTargetSdk = Build.VERSION_CODES.P, trackingBug = 115609023)
		public int mode = MODE_INVALID;
		@@ -1642,6 +1649,8 @@ public class PackageInstaller {

		/**
		* Optionally set a label representing the app being installed.
		*
		* This value will be trimmed to the first 1000 characters.
		*/
		public void setAppLabel(@Nullable CharSequence appLabel) {
		this.appLabel = (appLabel != null) ? appLabel.toString() : null;
		@@ -1711,7 +1720,8 @@ public class PackageInstaller {
		*
		* <p>Initially, all restricted permissions are whitelisted but you can change
		* which ones are whitelisted by calling this method or the corresponding ones
		* on the {@link PackageManager}.
		* on the {@link PackageManager}. Only soft or hard restricted permissions on the current
		* Android version are supported and any invalid entries will be removed.
		*
		* @see PackageManager#addWhitelistedRestrictedPermission(String, String, int)
		* @see PackageManager#removeWhitelistedRestrictedPermission(String, String, int)

core/java/android/content/pm/PackageItemInfo.java

+10 −2

Original line number	Diff line number	Diff line
		@@ -49,8 +49,16 @@ import java.util.Objects;
		* in the implementation of Parcelable in subclasses.
		*/
		public class PackageItemInfo {
		/** The maximum length of a safe label, in characters */
		private static final int MAX_SAFE_LABEL_LENGTH = 50000;

		/**
		* The maximum length of a safe label, in characters
		*
		* TODO(b/157997155): It may make sense to expose this publicly so that apps can check for the
		* value and truncate the strings/use a different label, without having to hardcode and make
		* assumptions about the value.
		* @hide
		*/
		public static final int MAX_SAFE_LABEL_LENGTH = 1000;

		/** @hide */
		public static final float DEFAULT_MAX_LABEL_SIZE_PX = 500f;

core/tests/PackageInstallerSessions/Android.bp

0 → 100644

+42 −0

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		//
		// Copyright 2020 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.
		//

		android_test {
		name: "FrameworksCorePackageInstallerSessionsTests",

		srcs: [
		"src/*/.kt",
		],
		static_libs: [
		"androidx.test.rules",
		"compatibility-device-util-axt",
		"frameworks-base-testutils",
		"platform-test-annotations",
		"testng",
		"truth-prebuilt",
		],

		libs: [
		"android.test.runner",
		"android.test.base",
		"framework",
		"framework-res",
		],

		platform_apis: true,
		sdk_version: "core_platform",
		test_suites: ["device-tests"],
		}

core/tests/PackageInstallerSessions/AndroidManifest.xml

0 → 100644

+29 −0

Original line number	Diff line number	Diff line
		<?xml version="1.0" encoding="utf-8"?>
		<!--
		* Copyright (C) 2020 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.
		-->

		<manifest
		xmlns:android="http://schemas.android.com/apk/res/android"
		package="com.android.frameworks.coretests.package_installer_sessions"
		>

		<application>
		<uses-library android:name="android.test.runner" />
		</application>

		<instrumentation android:name="androidx.test.runner.AndroidJUnitRunner"
		android:targetPackage="com.android.frameworks.coretests.package_installer_sessions"/>
		</manifest>

core/tests/PackageInstallerSessions/src/android/content/pm/PackageSessionTests.kt

0 → 100644

+188 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2020 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.content.pm

		import android.content.Context
		import android.content.pm.PackageInstaller.SessionParams
		import android.platform.test.annotations.Presubmit
		import androidx.test.InstrumentationRegistry
		import androidx.test.filters.LargeTest
		import com.android.compatibility.common.util.ShellIdentityUtils
		import com.google.common.truth.Truth.assertThat
		import org.junit.After
		import org.junit.Before
		import org.junit.Test
		import org.testng.Assert.assertThrows
		import kotlin.random.Random

		/**
		* For verifying public [PackageInstaller] session APIs. This differs from
		* [com.android.server.pm.PackageInstallerSessionTest] in services because that mocks the session,
		* whereas this test uses the installer on device.
		*/
		@Presubmit
		class PackageSessionTests {

		companion object {
		/**
		* Permissions marked "hardRestricted" or "softRestricted" in core/res/AndroidManifest.xml.
		*/
		private val RESTRICTED_PERMISSIONS = listOf(
		"android.permission.SEND_SMS",
		"android.permission.RECEIVE_SMS",
		"android.permission.READ_SMS",
		"android.permission.RECEIVE_WAP_PUSH",
		"android.permission.RECEIVE_MMS",
		"android.permission.READ_CELL_BROADCASTS",
		"android.permission.ACCESS_BACKGROUND_LOCATION",
		"android.permission.READ_CALL_LOG",
		"android.permission.WRITE_CALL_LOG",
		"android.permission.PROCESS_OUTGOING_CALLS"
		)
		}

		private val context: Context = InstrumentationRegistry.getContext()

		private val installer = context.packageManager.packageInstaller

		@Before
		@After
		fun abandonAllSessions() {
		installer.mySessions.asSequence()
		.map { it.sessionId }
		.forEach {
		try {
		installer.abandonSession(it)
		} catch (ignored: Exception) {
		// Querying for sessions checks by calling package name, but abandoning
		// checks by UID, which won't match if this test failed to clean up
		// on a previous install + run + uninstall, so ignore these failures.
		}
		}
		}

		@Test
		fun truncateAppLabel() {
		val longLabel = invalidAppLabel()
		val params = SessionParams(SessionParams.MODE_FULL_INSTALL).apply {
		setAppLabel(longLabel)
		}

		createSession(params) {
		assertThat(installer.getSessionInfo(it)?.appLabel)
		.isEqualTo(longLabel.take(PackageItemInfo.MAX_SAFE_LABEL_LENGTH))
		}
		}

		@Test
		fun removeInvalidAppPackageName() {
		val longName = invalidPackageName()
		val params = SessionParams(SessionParams.MODE_FULL_INSTALL).apply {
		setAppPackageName(longName)
		}

		createSession(params) {
		assertThat(installer.getSessionInfo(it)?.appPackageName)
		.isEqualTo(null)
		}
		}

		@Test
		fun removeInvalidInstallerPackageName() {
		val longName = invalidPackageName()
		val params = SessionParams(SessionParams.MODE_FULL_INSTALL).apply {
		setInstallerPackageName(longName)
		}

		createSession(params) {
		// If a custom installer name is dropped, it defaults to the caller
		assertThat(installer.getSessionInfo(it)?.installerPackageName)
		.isEqualTo(context.packageName)
		}
		}

		@Test
		fun truncateWhitelistPermissions() {
		val params = SessionParams(SessionParams.MODE_FULL_INSTALL).apply {
		setWhitelistedRestrictedPermissions(invalidPermissions())
		}

		createSession(params) {
		assertThat(installer.getSessionInfo(it)?.whitelistedRestrictedPermissions!!)
		.containsExactlyElementsIn(RESTRICTED_PERMISSIONS)
		}
		}

		@LargeTest
		@Test
		fun allocateMaxSessionsWithPermission() {
		ShellIdentityUtils.invokeWithShellPermissions {
		repeat(1024) { createDummySession() }
		assertThrows(IllegalStateException::class.java) { createDummySession() }
		}
		}

		@LargeTest
		@Test
		fun allocateMaxSessionsNoPermission() {
		repeat(50) { createDummySession() }
		assertThrows(IllegalStateException::class.java) { createDummySession() }
		}

		private fun createDummySession() {
		installer.createSession(SessionParams(SessionParams.MODE_FULL_INSTALL)
		.apply {
		setAppPackageName(invalidPackageName())
		setAppLabel(invalidAppLabel())
		setWhitelistedRestrictedPermissions(invalidPermissions())
		})
		}

		private fun invalidPackageName(maxLength: Int = SessionParams.MAX_PACKAGE_NAME_LENGTH): String {
		return (0 until (maxLength + 10))
		.asSequence()
		.mapIndexed { index, _ ->
		// A package name needs at least one separator
		if (index == 2) {
		'.'
		} else {
		Random.nextInt('z' - 'a').toChar() + 'a'.toInt()
		}
		}
		.joinToString(separator = "")
		}

		private fun invalidAppLabel() = (0 until PackageItemInfo.MAX_SAFE_LABEL_LENGTH + 10)
		.asSequence()
		.map { Random.nextInt(Char.MAX_VALUE.toInt()).toChar() }
		.joinToString(separator = "")

		private fun invalidPermissions() = RESTRICTED_PERMISSIONS.toMutableSet()
		.apply {
		// Add some invalid permission names
		repeat(10) { add(invalidPackageName(300)) }
		}

		private fun createSession(params: SessionParams, block: (Int) -> Unit = {}) {
		val sessionId = installer.createSession(params)
		try {
		block(sessionId)
		} finally {
		installer.abandonSession(sessionId)
		}
		}
		}