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sftp postquote command rename fix/diff question

From: Kristian Gunstone <>
Date: Wed, 9 May 2007 10:56:37 +0200

Hi guys, I just become a subscriber to this mailing-list after breeze in
#curl (freenode) suggested I do so.

I've recently been playing with the new sftp support in libcurl,
  which I am using to upload an image in a little webcam program.

However, when I issued the 'rename' command I noticed that I would get
an error if the destination file already existed. Pollita(freenode)
informed me that this was not a 'bug' in libssh2, but that this was how
the standard specified it should respond.

Either way, I made a modification in curl (/lib/ssh.c) which would check
if the destination file existed, and if it did, unlink it before the
rename was issued.

I made a diff which can be found here:

I've never hacked around with the internals of libcurl before, and I
have absolutely no idea whatsoever if this kind of thing would break
something else (protocol specification-wise from a libcurl point of view)
or how and if I should commit this.

I made this for curl-7.16.3-20070509 which I got from,

and I built it against libssh2-0.15-20070509.

Any information would be greatly appreciated.


Kristian Gunstone
Received on 2007-05-09