[jira] [Created] (SSHD-753) SSHD cannot read its keyfile through a symlink

[Anthony Wood (JIRA)]

Anthony Wood created SSHD-753:
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             Summary: SSHD cannot read its keyfile through a symlink
                 Key: SSHD-753
                 URL: https://issues.apache.org/jira/browse/SSHD-753
             Project: MINA SSHD
          Issue Type: Bug
    Affects Versions: 1.5.0
            Reporter: Anthony Wood


In {{AbstractGeneratorHostKeyProvider.loadFromFile()}} the configured 
{{keyPath}} is checked using {{LinkOption.NOFOLLOW_LINKS}}.  If the path is a 
symlink, the key will be ignored.  Perversely, this class then generates and 
writes out a new key (if overwriteAllowed) writing through the symlink and 
clobbering the original; on every startup it will ignore its own previous key 
and do it again.

Note this is *not* about following or listing symlinks for, e.g., SFTP clients 
(SSHD-733).

Since the key path is purely server-side configuration, SSHD should not 
interfere with deployment details such as whether its private key is behind a 
symlink.



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