You are viewing a plain text version of this content. The canonical link for it is here.

Posted to dev@mina.apache.org by "Kohsuke Kawaguchi (JIRA)" <ji...@apache.org> on 2014/02/27 01:15:21 UTC

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

Kohsuke Kawaguchi created SSHD-294:
--------------------------------------

             Summary: 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


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.  



--
This message was sent by Atlassian JIRA
(v6.1.5#6160)