[VFS-769] TGZ fsManager.createFileSystem fails

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 2.6.0
• Fix Version/s: 2.7.0
• Assignee: Unassigned
• Reporter: Thomas BELOT
• Created: 08/Apr/20 10:20
• Updated: 06/Sep/20 22:49
• Resolved: 06/Sep/20 22:49

Description

FileSystemManager fsManager = VFS.getManager();
FileObject f1 = fsManager.resolveFile("file:///C:/DIR");
FileObject f2 = f1.resolveFile("test.tgz");
FileObject res = fsManager.createFileSystem(f2);
System.out.println(res);

Fails with this stack trace :

Caused by: java.lang.IllegalStateException: org.apache.commons.vfs2.FileSystemException: Unknown message with code "Error detected parsing the header".
	at MyClass.main(MyClass.java:30)
Caused by: org.apache.commons.vfs2.FileSystemException: Unknown message with code "Error detected parsing the header".
	at org.apache.commons.vfs2.provider.tar.TarFileSystem.init(TarFileSystem.java:117)
	at org.apache.commons.vfs2.provider.AbstractVfsContainer.addComponent(AbstractVfsContainer.java:51)
	at org.apache.commons.vfs2.provider.AbstractFileProvider.addFileSystem(AbstractFileProvider.java:98)
	at org.apache.commons.vfs2.provider.AbstractLayeredFileProvider.createFileSystem(AbstractLayeredFileProvider.java:81)
	at org.apache.commons.vfs2.impl.DefaultFileSystemManager.createFileSystem(DefaultFileSystemManager.java:896)
	at org.apache.commons.vfs2.impl.DefaultFileSystemManager.createFileSystem(DefaultFileSystemManager.java:910)
	at MyClass.main(MyClass.java:27)
Caused by: java.io.IOException: Error detected parsing the header
	at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:371)
	at org.apache.commons.vfs2.provider.tar.TarFileSystem.init(TarFileSystem.java:80)
	... 6 more
Caused by: java.lang.IllegalArgumentException: At offset 124, 12 byte binary number exceeds maximum signed long value
	at org.apache.commons.compress.archivers.tar.TarUtils.parseBinaryBigInteger(TarUtils.java:215)
	at org.apache.commons.compress.archivers.tar.TarUtils.parseOctalOrBinary(TarUtils.java:179)
	at org.apache.commons.compress.archivers.tar.TarArchiveEntry.parseTarHeader(TarArchiveEntry.java:1350)
	at org.apache.commons.compress.archivers.tar.TarArchiveEntry.<init>(TarArchiveEntry.java:438)
	at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:369)
	... 7 more

but if I explicitly states that this is tgz scheme, it works fine

FileObject res = fsManager.createFileSystem("tgz",f2);

This seems linked to the following lines :
default FS manager disables TGZ scheme and convert it to TAR scheme and checks for TGZ scheme

Issue Links

• links to: GitHub Pull Request #94