dnscrypt-proxy-android/common/service.sh

#!/system/bin/sh
# Please don't hardcode /magisk/modname/... ; instead, please use $MODDIR/...
# This will make your scripts compatible even if Magisk change its mount point in the future
MODDIR=${0%/*}

# This script will be executed in late_start service mode
# More info in the main Magisk thread

for i in 1 2 3 4 5 6 7 8 9 10 11 12; do
	ping -c 1 download.dnscrypt.info
	if [[ $? == 0 ]];
	then
		$MODPATH/system/bin/dnscrypt-proxy -config $MODPATH/system/etc/dnscrypt-proxy/dnscrypt-proxy.toml &
		sleep 15
		iptables -t nat -A OUTPUT -p tcp ! -d 9.9.9.9 --dport 53 -j DNAT --to-destination 127.0.0.1:5354
		iptables -t nat -A OUTPUT -p udp ! -d 9.9.9.9 --dport 53 -j DNAT --to-destination 127.0.0.1:5354
		ip6tables -t nat -A OUTPUT -p tcp ! -d 9.9.9.9 --dport 53 -j DNAT --to-destination [::1]:5354
		ip6tables -t nat -A OUTPUT -p udp ! -d 9.9.9.9 --dport 53 -j DNAT --to-destination [::1]:5354
		break;
	else
		sleep 5
	fi
done