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Posted to dev@mina.apache.org by "Guillaume Nodet (JIRA)" <ji...@apache.org> on 2014/03/17 15:10:42 UTC
[jira] [Resolved] (SSHD-294) Dubious SSH_FXP_REALPATH handling
[ https://issues.apache.org/jira/browse/SSHD-294?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]
Guillaume Nodet resolved SSHD-294.
----------------------------------
Resolution: Fixed
Fix Version/s: 0.11.0
Assignee: Guillaume Nodet
https://git-wip-us.apache.org/repos/asf?p=mina-sshd.git;a=commit;h=290554d7a5fa14072981dc8a5389e192e32673b3
> 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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