[jira] Commented: (COMPRESS-55) CpioArchiveEntry ignores invalid modes

["Sebb (JIRA)" <ji...@apache.org>]

    [ https://issues.apache.org/jira/browse/COMPRESS-55?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=12689471#action_12689471 ] 

Sebb commented on COMPRESS-55:
------------------------------

CpioArchiveInputStream.readNewEntry() can also set the mode to 0  when tested by CpioArchiveInputStreamTest.testCpioUnarchive(). 

> CpioArchiveEntry ignores invalid modes
> --------------------------------------
>
>                 Key: COMPRESS-55
>                 URL: https://issues.apache.org/jira/browse/COMPRESS-55
>             Project: Commons Compress
>          Issue Type: Bug
>            Reporter: Sebb
>
> CpioArchiveEntry has the following code:
> {code}
>         default:
>             // FIXME: testCpioUnarchive fails if I change the line to
>             // actually throw the excpetion
>             new IllegalArgumentException("Unknown mode (full mode: " + mode
>                     + ", masked mode: " + (mode & S_IFMT));
>         }
> {code}
> As the comment says, rejecting invalid modes causes test failures.
> These appear to be caused by the code
> {bq}        this.cpioEntry.setMode(0);
> in the method CpioArchiveOutputStream.finish()
> Is a mode of 0 allowed? If so, then setMode needs to allow it, otherwise the method call needs to change to something else.

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