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#!/bin/sh
# Stupid basic http server using OpenBSD netcat
set -e
PORT="${PORT:-8900}"
ADDR="${ADDR:-127.0.0.1}"
ncpid=
send_index() {
cat <<EOF
HTTP/1.1 200 OK
Server: shell
Content-Type: text/html; charset=UTF-8
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Netcat HTTP</title>
</head>
<body>
Minimal HTTP server in posix SH and OpenBSD's netcat
</body>
</html>
EOF
}
cleanup() {
set +e
kill "$ncpid" >/dev/null 2>&1
rm "$_f" "$_inF" >/dev/null 2>&1
exit 0
}
trap cleanup EXIT INT
while true ; do
_f="$(mktemp)"
_inF="$(mktemp)"
rm -f "$_inF"
mkfifo "$_inF"
#shellcheck disable=SC2002
cat "$_inF" | nc -l "$ADDR" "$PORT" > "$_f" & # | tee /dev/fd/2 >"$_f" &
ncpid=$!
counter=0
while [ $counter -lt 100 ] || [ -s "$_f" ] ; do
if grep -qi "^Accept:" "$_f" ; then
pth="$(sed -nre 's@^GET ([^ ][^ ]*) HTTP/1.1.*@\1@gp' < "$_f")"
echo "Request for path: $pth"
case $pth in
/) send_index >"$_inF" ;;
esac
break
fi
sleep .01
[ -s "$_f" ] && counter=$((counter += 1))
ps $ncpid >/dev/null 2>&1 || break
done
kill $ncpid || echo ""
rm "$_f" "$_inF"
done
|
