On 12/01/2015 12:34 AM, Dmitry Bely wrote:
Hi Orion,
On Thu, Nov 26, 2015 at 2:11 AM, Orion Poplawski <orion@cora.nwra.com> wrote:
On 11/24/2015 05:10 AM, Dmitry Bely wrote:
Hi,
I would like to use ssh-agent globally for X session (Debian/MATE if it matters). X session starts it itself and when I login to X locally it works as expected (SSH_AGENT_PID and SSH_AUTH_SOCK environment variables are set correctly). But if I connect to the host via x2go, strange things happen: in any terminal session SSH_AUTH_SOCK points to non-existing path and SSH_AGENT_PID is not set at all. I tried to work around this adding to ~/.bashrc:
if [ ! -S ~/.ssh/ssh_auth_sock ]; then eval
ssh-agent -sln -sf "$SSH_AUTH_SOCK" ~/.ssh/ssh_auth_sock fi export SSH_AUTH_SOCK=~/.ssh/ssh_auth_sockThis way SSH_AUTH_SOCK is correct but SSH_AGENT_PID is surprisingly unset somethere. Any idea how to fix that?
I don't quite follow what you mean by "globally". Are you using desktop-sharing and connecting to an existing X session and want to use that ssh-agent?
I need one ssh-agent per X session that all child processes can access.
In that case perhaps your x2go ssh connection is forwarding the ssh-agent connection from the client machine and you need to disable the agent forwarding.
Probably you are right. But how to disable it in QT4 x2goclient? If I add
Host * ForwardAgent no
to ~/.ssh/config it affects a separate ssh session but not x2goclient's one. And I failed to find any command line/GUI x2goclient option that is related to ssh agent forwarding.
Hmm, it appears that the code never calls ssh_options_parse_config(), whether by intention or not I do not know. CCing the dev list to get their take on it. But the libssh docs indicate that it should be called: http://api.libssh.org/master/group__libssh__session.html#ga7a801b85800baa3f4...
And I can confirm that x2goclient does appear to forward the SSH_AGENT at least if using the ssh-agent for authentication to the remote server.
-- Orion Poplawski Technical Manager 303-415-9701 x222 NWRA/CoRA Division FAX: 303-415-9702 3380 Mitchell Lane orion@cora.nwra.com Boulder, CO 80301 http://www.cora.nwra.com