#!/bin/bash
#
# ktmux: Start tmux and ktmux_helper.
# Usage: ktmux [options]
# Options: -I <path>   Pass path to kinit through to ktmux_helper.
#          -L <path>   Pass path to klist through to ktmux_helper.
#          -R <path>   Pass path to krenew through to ktmux_helper.
#          -S <path>   Socket path for tmux.
#          -T <path>   Path to tmux.
#          -n <name>   Window name for new tmux session.
#          -s <name>   Session name for new tmux session.
#          -t <name>   Target session name for new tmux session.
#

tmux=tmux
helper_opts=
tmux_opts=
session_opts=
while getopts ":I:L:R:S:T:n:s:t:" opt; do
  case $opt in
    I|L|R) helper_opts="$helper_opts -$opt $OPTARG";;
    T) tmux="$OPTARG"; helper_opts="$helper_opts -$opt $OPTARG";;
    n|s|t) session_opts="$session_opts -$opt $OPTARG";;
    S) tmux_opts="$tmux_opts -$opt $OPTARG";;
  esac
done
shift $((OPTIND-1))

if [ -z "$KRB5CCNAME" ]; then
  krb5ccname="$KRB5CCNAME"
  [ -z "$krb5ccname" ] && krb5ccname=FILE:${TMPDIR:-/tmp}/krb5cc_${UID}_ktmux_$$
  export KRB5CCNAME="$krb5ccname"
fi
klist -s || kinit

exec $tmux ${tmux_opts## } new-session ${session_opts## } -d ';' set-environment KRB5CCNAME "$KRB5CCNAME" ';' attach ';' run-shell "ktmux_helper ${helper_opts## }"