Bugs item #2849880, was opened at 2009-09-03 13:52
Message generated for change (Settings changed) made by bagder
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Category: SFTP
Group: None
Status: Open
>Resolution: Invalid
Priority: 5
Private: No
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Daniel Stenberg (bagder)
Summary: remote host startup banner breaks sftp/scp
Initial Comment:
I use JSCAPE FTP server, if a startup banner is defined for sftp, it seems to
break the sftp/scp connection (the libssh2 library is used by the cURL
application):
Enter host password for user 'xxxxx':
* About to connect() to 8.12.42.168 port 22 (#0)
* Trying 8.12.42.168... connected
* Connected to 8.12.42.168 (8.12.42.168) port 22 (#0)
* Failure establishing ssh session
* Closing connection #0
When removing the startup banner and trying again:
* About to connect() to 8.12.42.168 port 22 (#0)
* Trying 8.12.42.168... connected
* Connected to 8.12.42.168 (8.12.42.168) port 22 (#0)
* SSH authentication methods available: password,publickey
* Using ssh public key file /var/home/xxxxx/.ssh/id_dsa.pub
* Using ssh private key file /var/home/xxxxx/.ssh/id_dsa
* SSH public key authentication failed: Unable to open public key file
* Initialized password authentication
* Authentication complete
% Total % Received % Xferd Average Speed Time Time Time Current
Dload Upload Total Spent Left Speed
0 0 0 0 0 0 0 0 --:--:-- --:--:-- --:--:-- 0*
Connection #0 to host 8.12.42.168 left intact
* Closing connection #0
There is no issue when using the AUTHENTICATION banner (not STARTUP banner)
Or might this be a Cipher that the Jscape application is not uses? Or a cURL
problem?
Thanks
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>Comment By: Daniel Stenberg (bagder)
Date: 2009-10-18 14:25
Message:
We've seen this happen in the past and the problem is that the server is
then not complying to the correct protocol and thus it breaks sftp. The
proper fix is to make the server behave.
If other sftp clients manage to work around this problem we could of
course check at how they do it and try to do something similar.
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Comment By: Nobody/Anonymous (nobody)
Date: 2009-09-04 09:10
Message:
unfortunately I have only internal systems with jscape ftp server, I have
asked jscape if they can set up a startup banner on their demo site to test
this - still waiting for a reply. thanks
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Comment By: Daniel Stenberg (bagder)
Date: 2009-09-03 22:36
Message:
Any chance this server or another one showing this problem is publicly
accessible?
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