#!/bin/sh
#
# Log status message to IRC bot. Fall back to sending mail if bot is sick.
#
# Maximilian Wilhelm <max@rfc2324.org>
#  -- Mon, 02 Jun 2014 10:02:40 +0200
#

set -e

STATUS_BOT_ADDR="{{ salt['pillar.get']('ffho:status_bot:addr') }}"
STATUS_BOT_PORT="{{ salt['pillar.get']('ffho:status_bot:port') }}"
TECH_C_MAIL="{{ salt['pillar.get']('ffho:tech_c_mail') }}"

temp_file="$(mktemp)"

trap "rm -f -- \"${temp_file}\"" EXIT 1 2 15

# Specific source address given?
src_ip=""
if [ "$1" = "-s" ]; then
	shift

	# Valid local IP address given?
	if [ "$1" ] && ip route get "$1" | grep -q "dev lo" 2>/dev/null; then
		src_ip="$1"
		shift
	fi
fi

if [ $# = 0 -o "$1" = "-" ]; then
	cat > "${temp_file}"
else
	echo "$@" > "${temp_file}"
fi

# If there is no data, there's nothing we can do *sniff*
if [ ! -s "${temp_file}" ]; then
	exit 0
fi

nc_opts=""
if echo ${STATUS_BOT_ADDR} | grep -q ":"; then
	if echo ${src_ip} | grep -vq ":"; then
		src_ip=$(ip a s dev lo 2>/dev/null | awk '/inet6/ { sub ("/128","",$2); print $2 }' | grep ":ffff:") || true
	fi
else
	if echo ${src_ip} | grep -qv "^[0-9]\+\."; then
		src_ip=$(ip a s dev lo 2>/dev/null | awk '/inet 10.132.255./ { sub ("/32","",$2); print $2 }') || true
	fi
fi


if [ "${src_ip}" ]; then
	nc_opts="-s ${src_ip}"
fi

if ! nc ${nc_opts} "${STATUS_BOT_ADDR}" "${STATUS_BOT_PORT}" < "${temp_file}"; then
	mail -s "FF-log from {{ grains['id'] }}" ${TECH_C_MAIL} < "${temp_file}"
fi