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From "Kirill Safonov (JIRA)" <j...@apache.org>
Subject [jira] Created: (VFS-284) NullPointerException is thrown at FtpFileObject when processing certain symbolic link
Date Sun, 18 Oct 2009 14:24:31 GMT
NullPointerException is thrown at FtpFileObject when processing certain symbolic link
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                 Key: VFS-284
                 URL: https://issues.apache.org/jira/browse/VFS-284
             Project: Commons VFS
          Issue Type: Bug
    Affects Versions: Nightly Builds
         Environment: Client is running on Vista Ultimate is accessing FTP server on Suse
Lunux 11.0
            Reporter: Kirill Safonov


On the server result of LIST command in "/proc/1" folder contains the symbolic link with entry
"lrwxrwxrwx    1 0        0               0 Oct 18 05:58 cwd"
Since the entry has no "->" part the resulting link destination is kept null leading to
java.lang.NullPointerException
	at java.lang.StringBuffer.<init>(StringBuffer.java:104)
	at org.apache.commons.vfs.impl.DefaultFileSystemManager.resolveName(DefaultFileSystemManager.java:762)
	at org.apache.commons.vfs.impl.DefaultFileSystemManager.resolveName(DefaultFileSystemManager.java:737)
	at org.apache.commons.vfs.provider.ftp.FtpFileObject.getLinkDestination(FtpFileObject.java:359)
	at org.apache.commons.vfs.provider.ftp.FtpFileObject.doGetType(FtpFileObject.java:338)
	at org.apache.commons.vfs.provider.AbstractFileObject.getType(AbstractFileObject.java:467)

More robust behavior and detailed error reporting (i.e. special type of exception) would be
very helpful in this case.

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