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/*
* Copyright (C) 2018 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.appsecurity.cts;
import com.android.tradefed.build.IBuildInfo;
import com.android.tradefed.device.DeviceNotAvailableException;
import com.android.tradefed.device.ITestDevice;
import com.android.tradefed.result.InputStreamSource;
import com.android.tradefed.testtype.DeviceTestCase;
import com.android.tradefed.testtype.IBuildReceiver;
import com.android.tradefed.util.FileUtil;
import org.junit.After;
import org.junit.Before;
import java.io.File;
import java.io.BufferedOutputStream;
import java.io.FileOutputStream;
import java.io.IOException;
import java.io.InputStream;
import java.io.OutputStream;
/**
* Set of tests that verify that corrupt APKs are properly rejected by PackageManager and
* do not cause the system to crash.
*/
public class CorruptApkTests extends DeviceTestCase implements IBuildReceiver {
private final String B71360999_PKG = "com.android.appsecurity.b71360999";
private final String B71361168_PKG = "com.android.appsecurity.b71361168";
private final String B79488511_PKG = "com.android.appsecurity.b79488511";
private static final String TEST_APK_RESOURCE_PREFIX = "/corruptapk/";
private IBuildInfo mBuildInfo;
@Override
public void setBuild(IBuildInfo buildInfo) {
mBuildInfo = buildInfo;
}
@Before
@Override
public void setUp() throws Exception {
super.setUp();
uninstall(B71360999_PKG);
uninstall(B71361168_PKG);
uninstall(B79488511_PKG);
}
@After
@Override
public void tearDown() throws Exception {
super.tearDown();
uninstall(B71360999_PKG);
uninstall(B71361168_PKG);
uninstall(B79488511_PKG);
}
/** Uninstall the apk if the test failed previously. */
public void uninstall(String pkg) throws Exception {
ITestDevice device = getDevice();
if (device.getInstalledPackageNames().contains(pkg)) {
device.uninstallPackage(pkg);
}
}
/**
* Tests that apks described in b/71360999 do not install successfully.
*/
public void testFailToInstallCorruptStringPoolHeader_b71360999() throws Exception {
final String APK_PATH = "CtsCorruptApkTests_b71360999.apk";
assertInstallNoFatalError(APK_PATH, B71360999_PKG);
}
/**
* Tests that apks described in b/71361168 do not install successfully.
*/
public void testFailToInstallCorruptStringPoolHeader_b71361168() throws Exception {
final String APK_PATH = "CtsCorruptApkTests_b71361168.apk";
assertInstallNoFatalError(APK_PATH, B71361168_PKG);
}
/**
* Tests that apks described in b/79488511 do not install successfully.
*/
public void testFailToInstallCorruptStringPoolHeader_b79488511() throws Exception {
final String APK_PATH = "CtsCorruptApkTests_b79488511.apk";
assertInstallNoFatalError(APK_PATH, B79488511_PKG);
}
/**
* Assert that installing the app does not cause a native error caused by a buffer overflow
* or an out-of-bounds read.
**/
private void assertInstallNoFatalError(String filename, String pkg) throws Exception {
ITestDevice device = getDevice();
device.clearLogcat();
installPackageFromResource(filename);
// This catches if the device fails to install the app because a segmentation fault
// or out of bounds read created by the bug occurs
String logs = device.executeAdbCommand("logcat", "-d");
assertNotNull(logs);
// Also check for the original indicators
assertFalse(logs.contains("SIGSEGV"));
assertFalse(logs.contains("==ERROR"));
}
/**
* Attempt to install the package with the given name from resources
**/
private void installPackageFromResource(String apkFilenameInResources)
throws Exception {
final ITestDevice device = getDevice();
String fullResourceName = TEST_APK_RESOURCE_PREFIX + apkFilenameInResources;
final File apkFile = File.createTempFile("corruptapk", ".apk");
try {
try (InputStream in = getClass().getResourceAsStream(fullResourceName);
OutputStream out = new BufferedOutputStream(new FileOutputStream(apkFile))) {
if (in == null) {
throw new IllegalArgumentException("Resource not found: " + fullResourceName);
}
byte[] buf = new byte[65536];
int chunkSize;
while ((chunkSize = in.read(buf)) != -1) {
out.write(buf, 0, chunkSize);
}
}
runWithTimeoutExpected(new Runnable() {
@Override
public void run() {
try {
String result = device.installPackage(apkFile, true);
assertNotNull(result);
assertFalse(result.isEmpty());
}
catch (DeviceNotAvailableException e) {
fail("Device not available");
}
}
}, 10000); // 10 seconds
} finally {
apkFile.delete();
}
}
private void runWithTimeoutExpected(Runnable runner, int timeout) {
Thread t = new Thread(runner);
t.start();
try {
t.join(timeout);
} catch (InterruptedException e) {
fail("operation was interrupted");
}
}
}
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