#!/bin/sh

exec ssh -F ~/.offlineimap/ssh_config -i ~/.offlineimap/${1}.ssh-seckey ${1}

# this relies on the IMAP command being specified on the server side, i.e. in
# ~/.ssh/authorized_keys, put a line like the following
#
#   command="MAIL=$HOME/.maildir /usr/lib/dovecot/imap 2>/dev/null",no-agent-forwarding,no-X11-forwarding,no-port-forwarding,no-pty ssh-ed25519 AAA…
#
# Then, when you invoke this script directly, you should see the IMAP server
# greet you:
#
# % ~/.offlineimap/preauthtunnel.sh madduck-net.imap.madduck.net
# * PREAUTH [CAPABILITY IMAP4rev1 […]] Logged in as madduck