com.facebook.buck.util.zip.ZipScrubberTest.java Source code

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Here is the source code for com.facebook.buck.util.zip.ZipScrubberTest.java

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/*
 * Copyright 2015-present Facebook, Inc.
 *
 * 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.facebook.buck.util.zip;

import static org.junit.Assert.assertThat;

import com.google.common.base.Charsets;
import java.io.ByteArrayInputStream;
import java.io.ByteArrayOutputStream;
import java.nio.ByteBuffer;
import java.util.Date;
import java.util.zip.ZipEntry;
import java.util.zip.ZipInputStream;
import java.util.zip.ZipOutputStream;
import org.apache.commons.compress.archivers.zip.ZipUtil;
import org.hamcrest.Matchers;
import org.junit.Test;

public class ZipScrubberTest {

    @Test
    public void modificationTimes() throws Exception {

        // Create a dummy ZIP file.
        ByteArrayOutputStream bytesOutputStream = new ByteArrayOutputStream();
        try (ZipOutputStream out = new ZipOutputStream(bytesOutputStream)) {
            ZipEntry entry = new ZipEntry("file1");
            byte[] data = "data1".getBytes(Charsets.UTF_8);
            entry.setSize(data.length);
            out.putNextEntry(entry);
            out.write(data);
            out.closeEntry();

            entry = new ZipEntry("file2");
            data = "data2".getBytes(Charsets.UTF_8);
            entry.setSize(data.length);
            out.putNextEntry(entry);
            out.write(data);
            out.closeEntry();
        }

        byte[] bytes = bytesOutputStream.toByteArray();
        // Execute the zip scrubber step.
        ZipScrubber.scrubZipBuffer(bytes.length, ByteBuffer.wrap(bytes));

        // Iterate over each of the entries, expecting to see all zeros in the time fields.
        Date dosEpoch = new Date(ZipUtil.dosToJavaTime(ZipConstants.DOS_FAKE_TIME));
        try (ZipInputStream is = new ZipInputStream(new ByteArrayInputStream(bytes))) {
            for (ZipEntry entry = is.getNextEntry(); entry != null; entry = is.getNextEntry()) {
                assertThat(entry.getName(), new Date(entry.getTime()), Matchers.equalTo(dosEpoch));
            }
        }
    }

    @Test
    public void modificationTimesExceedShort() throws Exception {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byte[] data = "data1".getBytes(Charsets.UTF_8);
        try (ZipOutputStream out = new ZipOutputStream(byteArrayOutputStream)) {
            for (long i = 0; i < Short.MAX_VALUE + 1; i++) {
                ZipEntry entry = new ZipEntry("file" + i);
                entry.setSize(data.length);
                out.putNextEntry(entry);
                out.write(data);
                out.closeEntry();
            }
        }

        byte[] bytes = byteArrayOutputStream.toByteArray();
        ZipScrubber.scrubZipBuffer(bytes.length, ByteBuffer.wrap(bytes));

        // Iterate over each of the entries, expecting to see all zeros in the time fields.
        Date dosEpoch = new Date(ZipUtil.dosToJavaTime(ZipConstants.DOS_FAKE_TIME));
        try (ZipInputStream is = new ZipInputStream(new ByteArrayInputStream(bytes))) {
            for (ZipEntry entry = is.getNextEntry(); entry != null; entry = is.getNextEntry()) {
                assertThat(entry.getName(), new Date(entry.getTime()), Matchers.equalTo(dosEpoch));
            }
        }
    }

    @Test
    public void modificationZip64Times() throws Exception {
        ByteArrayOutputStream byteArrayOutputStream = new ByteArrayOutputStream();
        byte[] data = "data1".getBytes(Charsets.UTF_8);
        try (ZipOutputStream out = new ZipOutputStream(byteArrayOutputStream)) {
            for (long i = 0; i < 2 * Short.MAX_VALUE + 1; i++) {
                ZipEntry entry = new ZipEntry("file" + i);
                entry.setSize(data.length);
                out.putNextEntry(entry);
                out.write(data);
                out.closeEntry();
            }
        }

        byte[] bytes = byteArrayOutputStream.toByteArray();
        ZipScrubber.scrubZipBuffer(bytes.length, ByteBuffer.wrap(bytes));

        // Iterate over each of the entries, expecting to see all zeros in the time fields.
        Date dosEpoch = new Date(ZipUtil.dosToJavaTime(ZipConstants.DOS_FAKE_TIME));
        try (ZipInputStream is = new ZipInputStream(new ByteArrayInputStream(bytes))) {
            for (ZipEntry entry = is.getNextEntry(); entry != null; entry = is.getNextEntry()) {
                assertThat(entry.getName(), new Date(entry.getTime()), Matchers.equalTo(dosEpoch));
            }
        }
    }
}