[Bug 2798] New: please consider providing a pre-invokcation hook

[bugzilla-daemon at bugzilla.mindrot.org]

https://bugzilla.mindrot.org/show_bug.cgi?id=2798

            Bug ID: 2798
           Summary: please consider providing a pre-invokcation hook
           Product: Portable OpenSSH
           Version: 7.6p1
          Hardware: All
                OS: All
            Status: NEW
          Severity: enhancement
          Priority: P5
         Component: ssh
          Assignee: unassigned-bugs at mindrot.org
          Reporter: mh+openssh-bugzilla at zugschlus.de

Hi,

please consider providing a configurable hook option (useable from
.ssh/config and/or -o) to invoke a binary before the actual ssh
processing begins. This could for example be used to load a certain key
into the agent or to query the user for a PIN needed for the HSM (in
case the used library doesn't go interactive).

It is of course possible to wrap ssh, but having ssh do this itself
greatly reduces the attach surface of a wrapper's command line
processing and doesn't require the user to remember to call the wrapper
instead.

Greetings
Marc

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