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@fizzxed
Created September 15, 2023 08:15
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Determine protonvpn port via gluetun and update qbittorrent
#!/usr/bin/env bash
# Determine protonvpn port via gluetun and update qbittorrent
#
# Add the following to sudo crontab -e to run every 5 minutes
# */5 * * * * /bin/sh /path/to/update_qbit_port.sh
# For synology users, run the script as root via the task scheduler every 5 minutes.
QBITTORRENT_USER= # qbittorrent username
QBITTORRENT_PASS= # qbittorrent password
QBITTORRENT_PORT=8080
QBITTORRENT_SERVER=localhost # usually localhost if running all containers on the same machine
GLUETUN_SERVER=localhost # usually localhost if running all containers on the same machine
GLUETUN_PORT=8000
VPN_CT_NAME=gluetun
timestamp() {
date '+%Y-%m-%d %H:%M:%S'
}
findconfiguredport() {
curl -s -i --header "Referer: http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}" --cookie "$1" "http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}/api/v2/app/preferences" | grep -oP '(?<=\"listen_port\"\:)(\d{1,5})'
}
findactiveport() {
curl -s -i "http://${GLUETUN_SERVER}:${GLUETUN_PORT}/v1/openvpn/portforwarded" | grep -oP '(?<=\"port\"\:)(\d{1,5})'
}
getpublicip() {
curl -s -i "http://${GLUETUN_SERVER}:${GLUETUN_PORT}/v1/publicip/ip" | grep -oP '(?<="public_ip":.)(\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3})'
}
qbt_login() {
qbt_sid=$(curl -s -i --header "Referer: http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}" --data "username=${QBITTORRENT_USER}" --data-urlencode "password=${QBITTORRENT_PASS}" "http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}/api/v2/auth/login" | grep -oP '(?!set-cookie:.)SID=.*(?=\;.HttpOnly\;)')
return $?
}
qbt_changeport() {
curl -s -i --header "Referer: http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}" --cookie "$1" --data-urlencode "json={\"listen_port\":$2,\"random_port\":false,\"upnp\":false}" "http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}/api/v2/app/setPreferences" >/dev/null 2>&1
return $?
}
qbt_checksid() {
if curl -s --header "Referer: http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}" --cookie "${qbt_sid}" "http://${QBITTORRENT_SERVER}:${QBITTORRENT_PORT}/api/v2/app/version" | grep -qi forbidden; then
return 1
else
return 0
fi
}
qbt_isreachable() {
nc -4 -vw 5 ${QBITTORRENT_SERVER} ${QBITTORRENT_PORT} &>/dev/null 2>&1
}
check_vpn_ct_health() {
while true;
do
if ! docker inspect "${VPN_CT_NAME}" --format='{{json .State.Health.Status}}' | grep -q '"healthy"'; then
echo "$(timestamp) | Waiting for ${VPN_CT_NAME} healthy state.."
sleep 3
else
echo "$(timestamp) | VPN container ${VPN_CT_NAME} in healthy state!"
break
fi
done
}
get_portmap() {
res=0
public_ip=$(getpublicip)
if ! qbt_checksid; then
echo "$(timestamp) | qBittorrent Cookie invalid, getting new SessionID"
if ! qbt_login; then
echo "$(timestamp) | Failed getting new SessionID from qBittorrent"
return 1
fi
else
echo "$(timestamp) | qBittorrent SessionID Ok!"
fi
configured_port=$(findconfiguredport "${qbt_sid}")
active_port=$(findactiveport)
echo "$(timestamp) | Public IP: ${public_ip}"
echo "$(timestamp) | Configured Port: ${configured_port}"
echo "$(timestamp) | Active Port: ${active_port}"
if [ ${configured_port} != ${active_port} ]; then
if qbt_changeport "${qbt_sid}" ${active_port}; then
echo "$(timestamp) | Port Changed to: $(findconfiguredport ${qbt_sid})"
else
echo "$(timestamp) | Port Change failed."
res=1
fi
else
echo "$(timestamp) | Port OK (Act: ${active_port} Cfg: ${configured_port})"
fi
return $res
}
public_ip=
configured_port=
active_port=
qbt_sid=
# Wait for a healthy state on the VPN container
check_vpn_ct_health
# check and possibly update the port
get_portmap
exit $?
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