openssh bugs - Jun 2015 - [Bug 2411] New: ssh-agent flag to print details of existing agent

https://bugzilla.mindrot.org/show_bug.cgi?id=2411

            Bug ID: 2411
           Summary: ssh-agent flag to print details of existing agent
           Product: Portable OpenSSH
           Version: 6.4p1
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: ssh-agent
          Assignee: unassigned-bugs at mindrot.org
          Reporter: eda at waniasset.com

When you run ssh-agent it starts and prints its own pid, even if an
agent is already running.  The -k flag can be used to kill the existing
agent, but it would be useful to have a flag (-e for example) which
just prints the details of the existing agent if running (and if there
is no existing agent, starts up as normal).

Then you could always do in the shell

    eval `ssh-agent -e`

and it would make sure an agent was running, starting one if necessary,
but leaving the existing one in place otherwise.

This can of course be done with shell scripting but I think it would be
a useful feature for ssh-agent itself.

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https://bugzilla.mindrot.org/show_bug.cgi?id=2411

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
                 CC|                            |djm at mindrot.org
         Resolution|---                         |WONTFIX
             Status|NEW                         |RESOLVED

--- Comment #1 from Damien Miller <djm at mindrot.org> ---
This can be done by checking the $SSH_AGENT_PID and $SSH_AUTH_SOCK
environment variables already.

E.g. in .bash_profile (or equivalent)

test -z "$SSH_AUTH_SOCK" && eval `ssh-agent`

... and in .bash_logout:

test -z "$SSH_AGENT_PID" || kill $SSH_AGENT_PID

This typically does what the user wants: start and agent if no agent
exists already (e.g. by being forwarded or started by a desktop
session), but only kill an agent that was started within the session.

I don't therefore think it necessary to implement this in ssh-agent
itself.

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https://bugzilla.mindrot.org/show_bug.cgi?id=2411

Damien Miller <djm at mindrot.org> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|RESOLVED                    |CLOSED

--- Comment #2 from Damien Miller <djm at mindrot.org> ---
closing resolved bugs as of 8.6p1 release

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