[COMPRESS-203] Long directory names can not be stored in a tar archive because of error when writing PAX headers

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 1.4.1
• Fix Version/s: 1.5
• Component/s: Archivers

Environment

Ubuntu 12.04 Linux 64 bit, Windows 7 64-bit

• Assignee: Unassigned
• Reporter: Boris Terzic
• Created: 01/Oct/12 14:01
• Updated: 21/Feb/14 14:27
• Resolved: 27/Dec/12 21:35

Description

Trying to add a directory to the TAR Archive that has a name longer than 100 bytes generates an exception with a stack trace similar to the following:

java.io.IOException: request to write '114' bytes exceeds size in header of '0' bytes for entry './PaxHeaders.X/layers/openstreetmap__osm.disy.net/.tiles/1.0.0/openstreetmap__osm.disy.net/default/'

            at org.apache.commons.compress.archivers.tar.TarArchiveOutputStream.write(TarArchiveOutputStream.java:385)

            at java.io.OutputStream.write(Unknown Source)

            at org.apache.commons.compress.archivers.tar.TarArchiveOutputStream.writePaxHeaders(TarArchiveOutputStream.java:485)

            at org.apache.commons.compress.archivers.tar.TarArchiveOutputStream.putArchiveEntry(TarArchiveOutputStream.java:312)

            at net.disy.lib.io.tar.TarUtilities.addFile(TarUtilities.java:116)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:158)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.addDirectory(TarUtilities.java:162)

            at net.disy.lib.io.tar.TarUtilities.tar(TarUtilities.java:77)

            at net.disy.lib.io.tar.TarUtilities.tar(TarUtilities.java:42)

            at net.disy.gisterm.tilecacheset.export.TileCacheSetExporter.tarTreeStructure(TileCacheSetExporter.java:262)

            at net.disy.gisterm.tilecacheset.export.TileCacheSetExporter.export(TileCacheSetExporter.java:111)

            at net.disy.gisterm.tilecacheset.desktop.controller.ExportController$1.run(ExportController.java:81)

            ... 2 more

Informal source code investigation points to the problem being that for directory entries the code assumes that the length is 0 in putArchiveEntry (see TarArchiveOutputStream:321 ) but when writing the data, it actually writes some data (the filename) and the length written (filename size) is larger than the length expected (0).