[jira] [Updated] (SSHD-294) Dubious SSH_FXP_REALPATH handling

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

     [ https://issues.apache.org/jira/browse/SSHD-294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Guillaume Nodet updated SSHD-294:
---------------------------------

    Fix Version/s:     (was: 0.10.2)
                   0.11.0

> Dubious SSH_FXP_REALPATH handling
> ---------------------------------
>
>                 Key: SSHD-294
>                 URL: https://issues.apache.org/jira/browse/SSHD-294
>             Project: MINA SSHD
>          Issue Type: Bug
>    Affects Versions: 0.10.0
>            Reporter: Kohsuke Kawaguchi
>            Assignee: Guillaume Nodet
>             Fix For: 0.11.0
>
>
> SSH_FXP_REALPATH is used to canonicalizing path on the server side, so clients often send path names that do not exist. The procol (http://tools.ietf.org/html/draft-ietf-secsh-filexfer-02) clearly states that it should respond with dummy attribute values.
> SftpSubsystem class, OTOH, attempts to return actual file attributes, which could fail on non-existent paths (or if the path exists but is at the location the user doesn't have access to.)
> Handler for SSH_FXP_REALPATH shouldn't attempt to get attributes, or if you do, it must recover from errors in SshFile and report dummy values instead.  



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