#! /bin/sh
# Reload Arti proxy when an interface comes up, to allow Arti to
# reconstruct new circuits.
# https://gitlab.torproject.org/tpo/core/arti/-/issues/1861

set -e

# Don't bother to restart Arti when lo is configured.
if [ "$IFACE" = "lo" ]; then
	exit 0
fi

# Only run from ifup.
if [ "$MODE" != "start" ]; then
	exit 0
fi

# Arti only cares about inet and inet6.
if [ "$ADDRFAM" != "inet" ] && [ "$ADDRFAM" != "inet6" ]; then
	exit 0
fi

# Is Arti installed?
if [ ! -e /usr/bin/arti ]; then
	exit 0
fi

if [ "$(pgrep arti)" ]; then
	service arti restart
fi

exit 0