[COMPRESS-554] Tar decompression fails with NullPointerException

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.20, 1.21
• Fix Version/s: 1.21
• Assignee: Peter Lee
• Reporter: Maksim Zuev
• Created: 25/Aug/20 22:08
• Updated: 07/Oct/20 02:30
• Resolved: 07/Oct/20 02:28

Description

This Kotlin code fails with exception(NPE.tar is in the attachments)

Exception in thread "main" java.lang.NullPointerExceptionException in thread "main" java.lang.NullPointerException at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:424) at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextEntry(TarArchiveInputStream.java:858) at kotlinx.fuzzer.tests.apache.tar.ApacheTarTestKt.main(ApacheTarTest.kt:79) at kotlinx.fuzzer.tests.apache.tar.ApacheTarTestKt.main(ApacheTarTest.kt)

import org.apache.commons.compress.archivers.ArchiveStreamFactory
import org.apache.commons.compress.archivers.tar.TarArchiveEntry
import java.io.File
import java.io.FileInputStream

fun main() {
    FileInputStream(File("NPE.tar")).use { fis ->
        ArchiveStreamFactory().createArchiveInputStream("tar", fis).use { ais ->
            var zae = ais.nextEntry as TarArchiveEntry?
            while (zae != null) {
                ais.readAllBytes()
                zae = ais.nextEntry as TarArchiveEntry?
            }
        }
    }
}