#!/bin/bash

# afssh -- wrapper around ssh-agent-filter and ssh
#
# Copyright (C) 2013 Timo Weingärtner <timo@tiwe.de>
#
# This file is part of ssh-agent-filter.
#
# ssh-agent-filter is free software: you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation, either version 3 of the License, or
# (at your option) any later version.
#
# ssh-agent-filter is distributed in the hope that it will be useful,
# but WITHOUT ANY WARRANTY; without even the implied warranty of
# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License
# along with ssh-agent-filter.  If not, see <http://www.gnu.org/licenses/>.


set -e

usage () {
	echo "usage: afssh [ssh-agent-filter options] -- [ssh options]"
	echo
	"$SAF" --help
	echo
	ssh --help
	exit
}

declare -a agent_filter_args

if [ -x "${BASH_SOURCE%/*}/ssh-agent-filter" ]; then
	SAF=$(readlink -f "${BASH_SOURCE%/*}/ssh-agent-filter")
else
	SAF=$(which ssh-agent-filter)
fi

while true; do
	if [ "$1" = "-h" ] || [ "$1" = "--help" ]; then
		usage
	elif [ "$1" = "--" ]; then
		shift
		break
	else
		agent_filter_args+=("$1")
		shift
	fi
done

# safeguard to not kill the real ssh-agent
unset SSH_AGENT_PID

trap 'kill "$SSH_AGENT_PID"; rm -r "$TEMPDIR"' EXIT
TEMPDIR=$(mktemp -d)

eval $(cd "$TEMPDIR"; "$SAF" "${agent_filter_args[@]}" || echo exit $?)

ssh-add -l

ssh -A "$@"