arch-qbittorrentvpn/run/nobody/qbittorrent.sh

#!/usr/bin/dumb-init /bin/bash

if [[ "${qbittorrent_running}" == "false" ]]; then

	echo "[info] Removing session lock file (if it exists)..."
	rm -f /config/qBittorrent/data/BT_backup/session.lock

	# set network interface binding to vpn virtual adapter (wg0/tun0/tap0) for qbittorrent on startup
	sed -i -e "s~^Connection\\\\Interface\=.*~Connection\\\\Interface\=${VPN_DEVICE_TYPE}~g" '/config/qBittorrent/config/qBittorrent.conf'
	sed -i -e "s~^Connection\\\\InterfaceName\=.*~Connection\\\\InterfaceName\=${VPN_DEVICE_TYPE}~g" '/config/qBittorrent/config/qBittorrent.conf'

	echo "[info] Attempting to start qBittorrent..."

	# run qBittorrent (daemonized, non-blocking) - note qbittorrent requires docker privileged flag
	/usr/bin/qbittorrent-nox --daemon --webui-port="${WEBUI_PORT}" --profile=/config

	# make sure process qbittorrent-nox DOES exist
	retry_count=12
	retry_wait=1
	while true; do

		if ! pgrep -x "qbittorrent-nox" > /dev/null; then

			retry_count=$((retry_count-1))
			if [ "${retry_count}" -eq "0" ]; then

				echo "[warn] Wait for qBittorrent process to start aborted, too many retries"
				echo "[info] Showing output from command before exit..."
				timeout 10 yes | /usr/bin/qbittorrent-nox --webui-port="${WEBUI_PORT}" --profile=/config ; return 1

			else

				if [[ "${DEBUG}" == "true" ]]; then
					echo "[debug] Waiting for qBittorrent process to start"
					echo "[debug] Re-check in ${retry_wait} secs..."
					echo "[debug] ${retry_count} retries left"
				fi
				sleep "${retry_wait}s"

			fi

		else

			echo "[info] qBittorrent process started"
			break

		fi

	done

	echo "[info] Waiting for qBittorrent process to start listening on port ${WEBUI_PORT}..."

	while [[ $(netstat -lnt | awk "\$6 == \"LISTEN\" && \$4 ~ \".${WEBUI_PORT}\"") == "" ]]; do
		sleep 0.1
	done

	echo "[info] qBittorrent process listening on port ${WEBUI_PORT}"

fi

# change incoming port using the qbittorrent api - note this requires anonymous authentication via webui
# option 'Bypass authentication for clients on localhost'
if [[ "${VPN_PROV}" == "pia" && -n "${VPN_INCOMING_PORT}" ]]; then

	# identify protocol, used by curl to connect to api
	if grep -q 'WebUI\\HTTPS\\Enabled=true' '/config/qBittorrent/config/qBittorrent.conf'; then
		web_protocol="https"
	else
		web_protocol="http"
	fi

	# note -k flag required to support insecure connection (self signed certs) when https used
	curl -k -i -X POST -d "json={\"random_port\": false}" "${web_protocol}://localhost:${WEBUI_PORT}/api/v2/app/setPreferences" &> /dev/null
	curl -k -i -X POST -d "json={\"listen_port\": ${VPN_INCOMING_PORT}}" "${web_protocol}://localhost:${WEBUI_PORT}/api/v2/app/setPreferences" &> /dev/null

	# set qbittorrent port to current vpn port (used when checking for changes on next run)s
	qbittorrent_port="${VPN_INCOMING_PORT}"

fi

# set qbittorrent ip to current vpn ip (used when checking for changes on next run)
qbittorrent_ip="${vpn_ip}"