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https://issues.apache.org/jira/browse/SSHD-1132?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=17291513#comment-17291513
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Thomas Wolf commented on SSHD-1132:
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I find that extension not 100% clearly defined in the IETF draft. For instance
SSH_FXP_READLINK has to return "dummy attributes". But with encoding failures,
it would make sense to return in the attributes
SSH_FILEXFER_ATTR_FLAGS_TRANSLATION_ERR and the UNTRANSLATED_NAME if the link
target cannot be encoded as requested.
I also wonder what a Java sftp server would be supposed to do with that option
anyway. Java delivers file names a strings, so always Unicode. It's not clear
to me under what circumstance a Java sftp server would ever send that
filename-charset extension. I suppose adding support for this in Apache MINA
sshd would be on the client side only?
(However, a server running on OS X needs to normalize link targets to NFC to
conform to "When UTF-8 is sent, the shortest valid UTF-8 encoding of the
UNICODE data MUST be used." OS X uses NFD.)
> Add support for SFTP "filename-charset" extension
> -------------------------------------------------
>
> Key: SSHD-1132
> URL: https://issues.apache.org/jira/browse/SSHD-1132
> Project: MINA SSHD
> Issue Type: Improvement
> Reporter: Lyor Goldstein
> Assignee: Lyor Goldstein
> Priority: Minor
> Labels: SFTP, sftp
>
> See https://tools.ietf.org/html/draft-ietf-secsh-filexfer-13#page-16
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