duiatxt

#!/bin/sh

usage="USAGE: $0 <host> <content> [configuration]"

host="${1?${usage}}"
content="${2?${usage}}"
configuration="${3:-/etc/duiadns.conf}"

if [ ! -r "${configuration}" ]; then
	echo "ERROR: unable to read DUIA configuration from ${configuration}"
	exit 1
fi

password="$( awk '/^password: /{ print $2 }' "${configuration}" )"

if [ -z "${password}" ]; then
	echo "ERROR: unable to recover password from ${configuration}"
	exit 1
fi

code="$( curl -A "DUIA-TXT-UPDATER/1.0" -L -X PUT -G \
		-s -o /dev/null -w '%{http_code}' \
		--data-urlencode "host=${host}" \
		--data-urlencode "password=${password}" \
		--data-urlencode "txt=${content}" \
		'https://ip.duiadns.net/dynamic.duia' )"

ret=$?
if [ "$ret" -ne 0 ]; then
	echo "ERROR: curl failed with code ${ret}"
	exit ${ret}
fi

if [ "${code}" -ge 200 ] && [ "${code}" -lt 300 ]; then
	exit 0
else
	echo "ERROR: server returned status code ${code}"
	exit 1
fi