arv-v-dsm/agent/agent.sh
2023-04-17 18:16:43 +02:00

152 lines
2.6 KiB
Bash

#!/usr/bin/env bash
set -u
VERSION="4"
HEADER="VirtualDSM Agent"
# Functions
finish() {
echo "$HEADER: Shutting down.."
exit
}
function checkNMI {
local nmi
nmi=$(cat /proc/interrupts | grep NMI | sed 's/[^1-9]*//g')
if [ "$nmi" != "" ]; then
echo "$HEADER: Received shutdown request through NMI.."
/usr/syno/sbin/synoshutdown -s > /dev/null
finish
exit
fi
}
function downloadUpdate {
TMP="/tmp/agent.sh"
rm -f "${TMP}"
# Auto update the agent
URL="https://raw.githubusercontent.com/kroese/virtual-dsm/master/agent/agent.sh"
remote_size=$(curl -sIk -m 3 "${URL}" | grep -i "content-length:" | tr -d " \t" | cut -d ':' -f 2)
[ "$remote_size" == "" ] && return
[ "$remote_size" == "0" ] && return
SCRIPT=$(readlink -f ${BASH_SOURCE[0]})
local_size=$(stat -c%s "$SCRIPT")
[ "$remote_size" == "$local_size" ] && return
if ! curl -sfk -m 10 -o "${TMP}" "${URL}"; then
echo "$HEADER: curl error" && return
fi
if [ ! -f "${TMP}" ]; then
echo "$HEADER: update error, file not found.." && return
fi
line=$(head -1 "${TMP}")
if [ "$line" != "#!/usr/bin/env bash" ]; then
echo "$HEADER: update error, invalid header: $line" && return
fi
if ! cmp --silent -- "${TMP}" "${SCRIPT}"; then
#mv -f "${TMP}" "${SCRIPT}"
chmod +x "${SCRIPT}"
echo "$HEADER: succesfully installed update."
else
echo "$HEADER: update file already equal?"
fi
}
function installPackages {
for filename in /usr/local/packages/*.spk; do
if [ -f "$filename" ]; then
BASE=$(basename "$filename" .spk)
BASE="${BASE%%-*}"
echo "$HEADER: Installing package ${BASE}.."
/usr/syno/bin/synopkg install "$filename" > /dev/null
/usr/syno/bin/synopkg start "$BASE" > /dev/null &
rm "$filename"
fi
done
}
trap finish SIGINT SIGTERM
ts=$(date +%s%N)
echo "$HEADER v$VERSION"
checkNMI
# Install packages
first_run=false
for filename in /usr/local/packages/*.spk; do
if [ -f "$filename" ]; then
first_run=true
fi
done
if [ "$first_run" = true ]; then
installPackages
else
downloadUpdate
fi
delay=5000
difference=0
elapsed=$((($(date +%s%N) - $ts)/1000000))
if (( delay > elapsed )); then
difference=$((delay-elapsed))
float=$(echo | awk -v diff=\""${difference}"\" '{print diff * 0.001}')
echo "Elapsed time: $elapsed, sleep: $float"
sleep $difference
fi
# Display message in docker log output
echo "-------------------------------------------"
echo " You can now login to DSM at port 5000 "
echo "-------------------------------------------"
# Wait for NMI interrupt as a shutdown signal
while true; do
checkNMI
sleep 2
done