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Posted to issues@commons.apache.org by "Stefan Bodewig (Issue Comment Edited) (JIRA)" <ji...@apache.org> on 2012/02/28 13:33:49 UTC
[jira] [Issue Comment Edited] (COMPRESS-181) Tar files created by
AIX native tar, and which contain symlinks, cannot be read by
TarArchiveInputStream
[ https://issues.apache.org/jira/browse/COMPRESS-181?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13218093#comment-13218093 ]
Stefan Bodewig edited comment on COMPRESS-181 at 2/28/12 12:32 PM:
-------------------------------------------------------------------
GNU tar from_header in list.c contains a workaround for this case:
{noformat}
/* Accommodate buggy tar of unknown vintage, which outputs leading
NUL if the previous field overflows. */
where += !*where;
{noformat}
this basically skips the first byte if it is a binary 0.
was (Author: bodewig):
GNU tar from_header in list.c contains a workaround for this case:
/* Accommodate buggy tar of unknown vintage, which outputs leading
NUL if the previous field overflows. */
where += !*where;
this basically skips the first byte if it is a binary 0.
> Tar files created by AIX native tar, and which contain symlinks, cannot be read by TarArchiveInputStream
> --------------------------------------------------------------------------------------------------------
>
> Key: COMPRESS-181
> URL: https://issues.apache.org/jira/browse/COMPRESS-181
> Project: Commons Compress
> Issue Type: Bug
> Components: Archivers
> Affects Versions: 1.2, 1.3, 1.4
> Environment: AIX 5.3
> Reporter: Robert Clark
> Attachments: simple-aix-native-tar.tar
>
>
> A simple tar file created on AIX using the native ({{/usr/bin/tar}} tar utility) *and* which contains a symbolic link, cannot be loaded by TarArchiveInputStream:
> {noformat}
> java.io.IOException: Error detected parsing the header
> at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:201)
> at Extractor.extract(Extractor.java:13)
> at Extractor.main(Extractor.java:28)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.tools.ant.taskdefs.ExecuteJava.run(ExecuteJava.java:217)
> at org.apache.tools.ant.taskdefs.ExecuteJava.execute(ExecuteJava.java:152)
> at org.apache.tools.ant.taskdefs.Java.run(Java.java:771)
> at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:221)
> at org.apache.tools.ant.taskdefs.Java.executeJava(Java.java:135)
> at org.apache.tools.ant.taskdefs.Java.execute(Java.java:108)
> at org.apache.tools.ant.UnknownElement.execute(UnknownElement.java:291)
> at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
> at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
> at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
> at java.lang.reflect.Method.invoke(Method.java:597)
> at org.apache.tools.ant.dispatch.DispatchUtils.execute(DispatchUtils.java:106)
> at org.apache.tools.ant.Task.perform(Task.java:348)
> at org.apache.tools.ant.Target.execute(Target.java:390)
> at org.apache.tools.ant.Target.performTasks(Target.java:411)
> at org.apache.tools.ant.Project.executeSortedTargets(Project.java:1399)
> at org.apache.tools.ant.Project.executeTarget(Project.java:1368)
> at org.apache.tools.ant.helper.DefaultExecutor.executeTargets(DefaultExecutor.java:41)
> at org.apache.tools.ant.Project.executeTargets(Project.java:1251)
> at org.apache.tools.ant.Main.runBuild(Main.java:809)
> at org.apache.tools.ant.Main.startAnt(Main.java:217)
> at org.apache.tools.ant.launch.Launcher.run(Launcher.java:280)
> at org.apache.tools.ant.launch.Launcher.main(Launcher.java:109)
> Caused by: java.lang.IllegalArgumentException: Invalid byte 0 at offset 0 in '{NUL}1722000726 ' len=12
> at org.apache.commons.compress.archivers.tar.TarUtils.parseOctal(TarUtils.java:99)
> at org.apache.commons.compress.archivers.tar.TarArchiveEntry.parseTarHeader(TarArchiveEntry.java:819)
> at org.apache.commons.compress.archivers.tar.TarArchiveEntry.<init>(TarArchiveEntry.java:314)
> at org.apache.commons.compress.archivers.tar.TarArchiveInputStream.getNextTarEntry(TarArchiveInputStream.java:199)
> ... 29 more
> {noformat}
> Tested with 1.2 and the 1.4 nightly build from Feb 23 ({{Implementation-Build: trunk@r1292625; 2012-02-23 03:20:30+0000}})
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