ssh

#!/bin/ksh
##
## ssh: Use environment-specific ssh_config(5) in $HOME/.ssh if available
## Copyright (c) 2015 SATOH Fumiyasu @ OSS Technology Corp., Japan
##

set -u

ssh_config="$HOME/.ssh/config"

uname=$(uname)
urel=$(uname -r)
hostname=$(uname -n)
domain=$(sed -n 's/^domain \(.*\)$/\1/p' /etc/resolv.conf)

## ----------------------------------------------------------------------

case "$domain" in
#lan.osstech.co.jp)
#  domain="osstech"
#  ;;
lan.sfo.jp)
  domain="sfo"
  ;;
esac

## ======================================================================

ssh_config_list=(
  "$ssh_config.$hostname"
  "$ssh_config.$domain"
  "$ssh_config.$uname$urel"
  "$ssh_config.$uname"
)

for ssh_config in "${ssh_config_list[@]}"; do
  if [[ -f $ssh_config ]]; then
    set -- -F "$ssh_config" "$@"
  fi
done

## ======================================================================

set -- "/usr/bin/${0##*/}" "$@"

if [ -f /usr/lib/libkeepalive.so ]; then
  set -- \
    env \
    LD_PRELOAD="/usr/lib/libkeepalive.so${LD_PRELOAD:+:$LD_PRELOAD}"  \
    KEEPIDLE=60 \
    KEEPINTVL=30 \
    KEEPCNT=3 \
    "$@" \
  ;
fi

## ----------------------------------------------------------------------

## Interpolate `echo BECOME-SUCCESS-*` to avoid confusing Ansible
echo "$$: ${*//echo BECOME-SUCCESS-/echo BECOME-SUCCESS-XXX-}" 1>&2

exec "$@"