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Commit a1a4a9f0 authored by Artem Iglikov's avatar Artem Iglikov
Browse files

Add test for reading tar file with PAX header. 

PAX header will only be used in some cases, one of which is a long file
name, which is used here.

Bug: 38090803
Test: runtest -p com.android.server.backup frameworks-services
Change-Id: I9ed3077ae4eb7e2dba73e61c28c8c80420c72729
parent f4b20e04

services/tests/servicestests/res/raw/backup_file_with_long_name

0 → 100644
+953 B

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services/tests/servicestests/src/com/android/server/backup/utils/TarBackupReaderTest.java

+45 −2
Original line number Diff line number Diff line
@@ -47,6 +47,7 @@ import android.support.test.runner.AndroidJUnit4; 


import com.android.frameworks.servicestests.R;

import com.android.server.backup.FileMetadata;

import com.android.server.backup.RefactoredBackupManagerService;

import com.android.server.backup.restore.PerformAdbRestoreTask;

import com.android.server.backup.restore.RestorePolicy;

import com.android.server.backup.testutils.PackageManagerStub;
@@ -61,6 +62,7 @@ import org.mockito.Mock; 
import org.mockito.MockitoAnnotations;



import java.io.InputStream;

import java.util.Arrays;

import java.util.List;



@SmallTest
@@ -71,6 +73,7 @@ public class TarBackupReaderTest { 
    private static final String TELEPHONY_PACKAGE_SIGNATURE_SHA256 =

            "301aa3cb081134501c45f1422abc66c24224fd5ded5fdc8f17e697176fd866aa";

    private static final int TELEPHONY_PACKAGE_VERSION = 25;

    private static final String TEST_PACKAGE_NAME = "com.android.backup.testing";

    private static final Signature FAKE_SIGNATURE_1 = new Signature("1234");

    private static final Signature FAKE_SIGNATURE_2 = new Signature("5678");
@@ -121,6 +124,45 @@ public class TarBackupReaderTest { 
        assertThat(fileMetadata.path).isEqualTo("_manifest");

    }



    @Test

    public void readTarHeaders_backupNotEncrypted_correctlyReadsPaxHeader() throws Exception {

        // Files with long names (>100 chars) will force backup to add PAX header.

        InputStream inputStream = mContext.getResources().openRawResource(

                R.raw.backup_file_with_long_name);

        InputStream tarInputStream = PerformAdbRestoreTask.parseBackupFileHeaderAndReturnTarStream(

                inputStream, null);

        TarBackupReader tarBackupReader = new TarBackupReader(tarInputStream,

                mBytesReadListenerMock, mBackupManagerMonitorMock);



        // Read manifest file.

        FileMetadata fileMetadata = tarBackupReader.readTarHeaders();

        Signature[] signatures = tarBackupReader.readAppManifestAndReturnSignatures(

                fileMetadata);

        RestorePolicy restorePolicy = tarBackupReader.chooseRestorePolicy(

                mPackageManagerStub, false /* allowApks */, fileMetadata, signatures);



        assertThat(restorePolicy).isEqualTo(RestorePolicy.IGNORE);

        assertThat(fileMetadata.packageName).isEqualTo(TEST_PACKAGE_NAME);

        assertThat(fileMetadata.path).isEqualTo(

                RefactoredBackupManagerService.BACKUP_MANIFEST_FILENAME);



        tarBackupReader.skipTarPadding(fileMetadata.size);



        // Read actual file (PAX header will only exist here).

        fileMetadata = tarBackupReader.readTarHeaders();

        signatures = tarBackupReader.readAppManifestAndReturnSignatures(

                fileMetadata);

        restorePolicy = tarBackupReader.chooseRestorePolicy(

                mPackageManagerStub, false /* allowApks */, fileMetadata, signatures);



        assertThat(restorePolicy).isEqualTo(RestorePolicy.IGNORE);

        assertThat(fileMetadata.packageName).isEqualTo(TEST_PACKAGE_NAME);

        char[] expectedFileNameChars = new char[200];

        Arrays.fill(expectedFileNameChars, '1');

        String expectedFileName = new String(expectedFileNameChars);

        assertThat(fileMetadata.path).isEqualTo(expectedFileName);

    }



    @Test

    public void readAppManifest_backupEncrypted_correctlyParsesAppManifest() throws Exception {

        InputStream inputStream = mContext.getResources().openRawResource(
@@ -331,7 +373,8 @@ public class TarBackupReaderTest { 
    }



    @Test

    public void chooseRestorePolicy_systemAppWithBackupAgentAndRestoreAnyVersion_returnsAccept() throws Exception {

    public void chooseRestorePolicy_systemAppWithBackupAgentAndRestoreAnyVersion_returnsAccept()

            throws Exception {

        InputStream inputStream = mContext.getResources().openRawResource(

                R.raw.backup_telephony_no_password);

        InputStream tarInputStream = PerformAdbRestoreTask.parseBackupFileHeaderAndReturnTarStream(
@@ -486,5 +529,5 @@ public class TarBackupReaderTest { 
        assertThat(bundleCaptor.getValue().get(EXTRA_LOG_EVENT_ID)).isEqualTo(

                LOG_EVENT_ID_VERSION_OF_BACKUP_OLDER);

    }



}