Add forwarding script to Tank of Freedom II

deploy.sh

@@ -122,6 +122,8 @@ done
 firewall-cmd --reload
 systemctl restart nginx
 
+cp "$(dirname "$0")"/scripts/forward_* /usr/local/bin
+
 echo
 echo "Installation complete. Password is ${systempassword}"
 if [ -n "$failed_games" ]; then
@@ -131,6 +133,10 @@ if [ -n "$failed_games" ]; then
   echo "Use /usr/local/bin/redeploy.sh [game] to try again"
 fi
 
+echo "For games that don't have a proper game server, you can type"
+echo "  forward_GAMENAME.sh YOURIP"
+echo "to forward traffic going to ${DOMAINNAME} to your IP"
+
 cat > /usr/local/bin/redeploy.sh <<EOF
 #!/bin/bash
 export stk_version="latest"

scripts/forward_tanksoffreedomii.sh

@@ -0,0 +1,32 @@
+#!/bin/bash
+# Collection of scripts to deploy a server hosting several open-source games
+# Copyright (C) 2022  Jarno van der Kolk
+#
+# This program is free software: you can redistribute it and/or modify
+# it under the terms of the GNU Affero General Public License as published
+# by the Free Software Foundation, either version 3 of the License, or
+# (at your option) any later version.
+#
+# This program is distributed in the hope that it will be useful,
+# but WITHOUT ANY WARRANTY; without even the implied warranty of
+# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+# GNU Affero General Public License for more details.
+#
+# You should have received a copy of the GNU Affero General Public License
+# along with this program.  If not, see <https://www.gnu.org/licenses/>.
+
+set -e
+
+if [ -z $1 ]; then
+  echo "Usage: $(basename $0) [YOUR IP]"
+  exit 1
+fi
+yourip="$1"
+
+firewall-cmd --permanent --add-masquerade
+firewall-cmd --permanent --add-port=3939/udp
+firewall-cmd --permanent --add-port=3940/udp
+firewall-cmd --permanent --add-forward-port=port=3939:proto=udp:toport=3939:toaddr=${yourip}
+firewall-cmd --permanent --add-forward-port=port=3940:proto=udp:toport=3940:toaddr=${yourip}
+
+firewall-cmd --reload