#!/usr/bin/env bash
set -eu
trap 'pkill -f nc || true' EXIT
trap exit SIGINT SIGTERM
if [ "$2" != "ipinfo" ]; then
# Serve the page
HTML="VirtualDSM
$2
"
LENGTH="${#HTML}"
RESPONSE="HTTP/1.1 200 OK\nContent-Length: ${LENGTH}\nConnection: close\n\n$HTML\n\n"
while true; do
echo -en "$RESPONSE" | nc -lp "${1:-5000}" >/dev/null 2>&1 & wait $!
done
exit 0
fi
SH_SCRIPT="/tmp/ipinfo.sh"
{ echo "#!/bin/bash"
echo "INFO=\$(curl -s -m 5 -S http://127.0.0.1:2210/read?command=10 2>/dev/null)"
echo "rest=\${INFO#*http_port}"
echo "rest=\${rest#*:}"
echo "rest=\${rest%%,*}"
echo "PORT=\${rest%%\\\"*}"
echo "rest=\${INFO#*eth0}"
echo "rest=\${rest#*ip}"
echo "rest=\${rest#*:}"
echo "rest=\${rest#*\\\"}"
echo "IP=\${rest%%\\\"*}"
echo "BODY=\"The location of DSM is http://\${IP}:\${PORT}\""
echo "HTML=\"VirtualDSM
\$BODY
\""
echo "LENGTH=\"\${#HTML}\""
echo "RESPONSE=\"HTTP/1.1 200 OK\\nContent-Length: \${LENGTH}\\nConnection: close\\n\\n\$HTML\\n\\n\""
echo "echo -e \"\$RESPONSE\""
} > "$SH_SCRIPT"
chmod +x "$SH_SCRIPT"
while true ; do
nc -lp "${1:-5000}" -e "$SH_SCRIPT" >/dev/null 2>&1 & wait $!
done