#!/bin/bash

declare -rg PUBLIC_BOTH="/etc/lighttpd/server.pem"
declare -rg CHAIN="/etc/lighttpd/chain.pem"
declare -rg DHPARAM="/etc/lighttpd/dhparam.pem"
declare -rg REDIR_FLAG="/etc/lighttpd/redirect.flag"
declare -rg INTERNAL_BOTH="/etc/ssl/openslx/lighttpd/server.pem"
declare -g INTERNAL_CHAIN="/etc/ssl/openslx/lighttpd/ca-chain.pem"

if ! [ -s "$DHPARAM" ] && ! ps aux | grep 'openssl dhparam' | grep -q -v grep; then
	openssl dhparam -out "$DHPARAM" 2048 &>/dev/null &
fi

/opt/openslx/slx-cert >&2 &

wait

[ -s "$INTERNAL_CHAIN" ] || INTERNAL_CHAIN=
readonly INTERNAL_CHAIN

if [ -f "/usr/lib/lighttpd/mod_openssl.so" ]; then
	echo 'server.modules += ( "mod_openssl" )'
fi

cat <<HEREDOC
\$SERVER["socket"] == ":443" {
	protocol	 = "https://"
	ssl.engine   = "enable"
	ssl.disable-client-renegotiation = "enable"

	# ECDH/ECDHE ciphers curve strength (see "openssl ecparam -list_curves")
	ssl.ec-curve			  = "secp384r1"
	# Compression is by default off at compile-time, but use if needed
	# ssl.use-compression	 = "disable"

	# intermediate configuration, tweak to your needs
	ssl.use-sslv2 = "disable"
	ssl.use-sslv3 = "disable"
	ssl.honor-cipher-order	= "enable"
	ssl.cipher-list		   = "ECDHE-ECDSA-CHACHA20-POLY1305:ECDHE-RSA-CHACHA20-POLY1305:ECDHE-ECDSA-AES128-GCM-SHA256:ECDHE-RSA-AES128-GCM-SHA256:ECDHE-ECDSA-AES256-GCM-SHA384:ECDHE-RSA-AES256-GCM-SHA384:DHE-RSA-AES128-GCM-SHA256:DHE-RSA-AES256-GCM-SHA384:ECDHE-ECDSA-AES128-SHA256:ECDHE-RSA-AES128-SHA256:ECDHE-ECDSA-AES128-SHA:ECDHE-RSA-AES256-SHA384:ECDHE-RSA-AES128-SHA:ECDHE-ECDSA-AES256-SHA384:ECDHE-ECDSA-AES256-SHA:ECDHE-RSA-AES256-SHA:DHE-RSA-AES128-SHA256:DHE-RSA-AES128-SHA:DHE-RSA-AES256-SHA256:DHE-RSA-AES256-SHA:ECDHE-ECDSA-DES-CBC3-SHA:ECDHE-RSA-DES-CBC3-SHA:EDH-RSA-DES-CBC3-SHA:AES128-GCM-SHA256:AES256-GCM-SHA384:AES128-SHA256:AES256-SHA256:AES128-SHA:AES256-SHA:DES-CBC3-SHA:!DSS"

	# pemfile is cert+privkey, ca-file is the intermediate chain in one file
HEREDOC
if [ -s "$PUBLIC_BOTH" ]; then
	echo "	ssl.pemfile			   = \"${PUBLIC_BOTH}\""
	[ -s "$CHAIN" ] && echo "	ssl.ca-file = \"${CHAIN}\""
elif [ -s "$INTERNAL_BOTH" ]; then
	echo "	ssl.pemfile			   = \"${INTERNAL_BOTH}\""
	echo "	ssl.ca-file = \"${INTERNAL_CHAIN}\""
fi

[ -s "$DHPARAM" ] && echo "	ssl.dh-file          = \"${DHPARAM}\""

# VHost for server.bwlehrpool
if [ -s "${INTERNAL_BOTH}" ]; then
	cat <<HEREDOC
	\$HTTP["host"] == "satellite.bwlehrpool" {
		ssl.pemfile = "${INTERNAL_BOTH}"
		ssl.ca-file = "${INTERNAL_CHAIN}"
	}
HEREDOC
	#
fi

echo "}" # End main block

[ -f "$REDIR_FLAG" ] && cat <<"HEREDOC"
$HTTP["scheme"] == "http" {
	# capture vhost name with regex condition -> %0 in redirect pattern
	# must be the most inner block to the redirect rule
	$HTTP["host"] =~ ".*" {
		url.redirect = ( "^/slx-admin/($|\?|index.php).*" => "https://%0$0" )
		url.redirect-code = 302
	}
}
HEREDOC

exit 0