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https://issues.apache.org/jira/browse/COMPRESS-469?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=16685278#comment-16685278
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Kirk Hardy commented on COMPRESS-469:
-------------------------------------
Thanks so much
> java.io.IOException: Error detected parsing the header on un-archiving.
> Archive untars fine in BSDTar and JTar
> --------------------------------------------------------------------------------------------------------------
>
> Key: COMPRESS-469
> URL: https://issues.apache.org/jira/browse/COMPRESS-469
> Project: Commons Compress
> Issue Type: Bug
> Affects Versions: 1.18
> Environment: Java version: 1.8.0_192, vendor: Oracle Corporation,
> runtime: /Library/Java/JavaVirtualMachines/jdk1.8.0_192.jdk/Contents/Home/jre
> Default locale: en_US, platform encoding: UTF-8
> OS name: "mac os x", version: "10.14", arch: "x86_64", family: "mac"
>
> bsdtar 2.8.3 - libarchive 2.8.3
> Reporter: Kirk Hardy
> Priority: Major
> Fix For: 1.19
>
> Attachments: compress-bug-POC.tar.gz
>
>
> Using TarArchiveInputStream to parse this tar archive results in a
> `java.io.IOException: Error detected parsing the header`
> `Caused by: java.lang.IllegalArgumentException: Invalid byte 78 at offset 8
> in '00000000NaN\{NUL}' len=12`
>
> The `00000000NaN\{NUL}` value is indeed found in the tar archive at the point
> that TarArchiveInputStream finds it and errors, but both BSDTar from a bash
> shell and JTar from a Java environment handle the archive fine, including the
> file with the malformed header. My commons-compress code is:
> {code:java}
> private static List<File> unTar(final File inputFile, final File outputDir)
> throws FileNotFoundException, IOException, ArchiveException {
> System.out.println(String.format("Untaring %s to dir %s.",
> inputFile.getAbsolutePath(), outputDir.getAbsolutePath()));
> final List<File> untaredFiles = new LinkedList<File>();
> final InputStream is = new FileInputStream(inputFile);
> final TarArchiveInputStream debInputStream = (TarArchiveInputStream) new
> ArchiveStreamFactory().createArchiveInputStream("tar", is);
> TarArchiveEntry entry = null;
> while ((entry = (TarArchiveEntry) debInputStream.getNextEntry()) != null)
> {
> final File outputFile = new File(outputDir, entry.getName());
> if (entry.isDirectory()) {
> System.out.println(String.format("Attempting to write output
> directory %s.", outputFile.getAbsolutePath()));
> if (!outputFile.exists()) {
> System.out
> .println(String.format("Attempting to create output directory
> %s.", outputFile.getAbsolutePath()));
> if (!outputFile.mkdirs()) {
> throw new IllegalStateException(
> String.format("Couldn't create directory %s.",
> outputFile.getAbsolutePath()));
> }
> }
> }
> else {
> System.out.println(String.format("Creating output file %s.",
> outputFile.getAbsolutePath()));
> final OutputStream outputFileStream = new
> FileOutputStream(outputFile);
> IOUtils.copy(debInputStream, outputFileStream);
> outputFileStream.close();
> }
> untaredFiles.add(outputFile);
> }
> debInputStream.close();
> return untaredFiles;
> }
> {code}
> [^compress-bug-POC.tar.gz]
> I've attached an archive of my proof-of-concept code that un-archives the
> problem archive using JTar, then attempts to un-archive it using
> commons-compress. The problem archive is included. Unfortunately I wasn't
> involved in the creation of the problem archive, it was downloaded from NPM
> last year, so I don't have any details about the archival process that caused
> the malformed header.
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