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From "Chris Boyd (JIRA)" <j...@apache.org>
Subject [jira] [Comment Edited] (VFS-398) FtpFileObject.getChildren() fails when a folder contains a file with a colon in the name
Date Thu, 29 Dec 2016 17:48:58 GMT

    [ https://issues.apache.org/jira/browse/VFS-398?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15785760#comment-15785760
] 

Chris Boyd edited comment on VFS-398 at 12/29/16 5:48 PM:
----------------------------------------------------------

Building upon Gary's comment, here is how we worked around this issue successfully by overriding
the resolveName method in DefaultFileSystemManager

{code:title=DefaultFileSystemManager workaround|borderStyle=solid}
new DefaultFileSystemManager()
{
        @Override
        public FileName resolveName( final FileName base, final String name, final NameScope
scope )
                throws FileSystemException
        {
                return super.resolveName( base, name.replace( ":", "%3A" ), scope );
        }

};
{code}


was (Author: wodencafe):
Building upon Gary's comment, here is how we worked around this issue successfully:

{code:title=DefaultFileSystemManager workaround|borderStyle=solid}
new DefaultFileSystemManager()
{
        @Override
        public FileName resolveName( final FileName base, final String name, final NameScope
scope )
                throws FileSystemException
        {
                return super.resolveName( base, name.replace( ":", "%3A" ), scope );
        }

};
{code}

> FtpFileObject.getChildren() fails when a folder contains a file with a colon in the name
> ----------------------------------------------------------------------------------------
>
>                 Key: VFS-398
>                 URL: https://issues.apache.org/jira/browse/VFS-398
>             Project: Commons VFS
>          Issue Type: Bug
>    Affects Versions: 2.0
>         Environment: Connecting via FTP to a host running SunOS 5.10
>            Reporter: Mark Leonard
>            Priority: Blocker
>
> In line 767 of DefaultFileSystemManager.java the UriParser's extractScheme() method is
called:
>         String scheme = UriParser.extractScheme(buffer.toString());
> This code was added in revision 780730
> http://svn.apache.org/viewvc?view=revision&revision=780730
> It is not clear to me why this change was made.
> For the FTP provider, buffer contains a plain file name (i.e. without a path and definitely
not in URI form)
> A colon is a valid character for a file name.
> However a colon will be interpreted as a URI scheme name.
> This causes an exception when the resolved path is checked using AbstractFileName.checkName()
> Sample code:
> FileObject fo = VFS.getManager().resolveFile("ftp://user:pass@host/some/path/some.file");
> fo.getParent().getChildren();
> If /some/path/ contains a child such as PREFIX:SUFFIX then an exception is thrown:
> Exception in thread "main" org.apache.commons.vfs2.FileSystemException: Invalid descendent
file name "PREFIX:SUFFIX".
> 	at org.apache.commons.vfs2.impl.DefaultFileSystemManager.resolveName(DefaultFileSystemManager.java:791)
> 	at org.apache.commons.vfs2.provider.AbstractFileObject.getChildren(AbstractFileObject.java:710)
> 	at org.apache.commons.vfs2.provider.ftp.FtpFileObject.getChildren(FtpFileObject.java:420)
> Therefore calling code is unable to list the children of the specified folder.



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