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https://issues.apache.org/jira/browse/VFS-822?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17571847#comment-17571847
]
Mark van der Walle commented on VFS-822:
----------------------------------------
I created a bare minimum example. i omitted the URI to the file as I am not
allowed to share that.
{code:java}
INFO: Authentication succeeded (password).
Exception in thread "main" org.apache.commons.vfs2.FileSystemException: Could
not determine if file "omittedforprivacyreasons" is readable.
at
org.apache.commons.vfs2.provider.AbstractFileObject.isReadable(AbstractFileObject.java:1582)
at nl.ocwduo.sftptest.VFSTest.main(VFSTest.java:39)
Caused by: java.lang.NumberFormatException: For input string: ""
at
java.base/java.lang.NumberFormatException.forInputString(NumberFormatException.java:65)
at java.base/java.lang.Integer.parseInt(Integer.java:662)
at java.base/java.lang.Integer.parseInt(Integer.java:770)
at
org.apache.commons.vfs2.provider.sftp.SftpFileSystem.getGroupsIds(SftpFileSystem.java:267)
at
org.apache.commons.vfs2.provider.sftp.SftpFileObject.getPermissions(SftpFileObject.java:467)
at
org.apache.commons.vfs2.provider.sftp.SftpFileObject.doIsReadable(SftpFileObject.java:257)
at
org.apache.commons.vfs2.provider.AbstractFileObject.isReadable(AbstractFileObject.java:1580)
... 1 more{code}
> getGroupIds fails when user has no groups
> -----------------------------------------
>
> Key: VFS-822
> URL: https://issues.apache.org/jira/browse/VFS-822
> Project: Commons VFS
> Issue Type: Bug
> Affects Versions: 2.9.0
> Reporter: Mark van der Walle
> Priority: Major
>
> In
> [https://github.com/apache/commons-vfs/blob/master/commons-vfs2/src/main/java/org/apache/commons/vfs2/provider/sftp/SftpFileSystem.java#L258]
> the groupIds are retrieved using the command id -G. If a user has no groups
> (gid=0 for example) then the result is that:
> [https://github.com/apache/commons-vfs/blob/master/commons-vfs2/src/main/java/org/apache/commons/vfs2/provider/sftp/SftpFileSystem.java#L264]
> will have an array with one entry being an empty string. This results in a
> NumberFormatException.
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