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Ensure $SERVER_ADDR is free on the server.

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Matt Low 2021-01-01 07:40:46 -07:00
parent fb98bb2c0b
commit 727aa097bf
1 changed files with 10 additions and 0 deletions
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10
vpnerator.sh
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@ -59,6 +59,11 @@ cleanup() {
EXIST_INTERFACE=\$(ip addr show to ${SERVER_ADDR} | head -1 | awk '{ print \$2 }' | cut -d':' -f1) EXIST_INTERFACE=\$(ip addr show to ${SERVER_ADDR} | head -1 | awk '{ print \$2 }' | cut -d':' -f1)
if [ ! -z "\${EXIST_INTERFACE}" ] ; then if [ ! -z "\${EXIST_INTERFACE}" ] ; then
if [ -z "\$(ip link show "\${EXIST_INTERFACE}" type wireguard)" ] ; then
# bail if the existing interface isn't of type wireguard
return 2
fi
remove_interface \${EXIST_INTERFACE} remove_interface \${EXIST_INTERFACE}
return 0 return 0
elif ip link show ${INTERFACE_NAME} type wireguard > /dev/null 2>&1 ; then elif ip link show ${INTERFACE_NAME} type wireguard > /dev/null 2>&1 ; then
@ -81,6 +86,11 @@ deps || exit 1
# Cleanup previous tunnel # Cleanup previous tunnel
cleanup cleanup
if [ "\$?" -eq 2 ] ; then
echo "$SERVER_ADDR is already being used on the server."
echo "Please choose another address."
exit 1
fi
umask 0177 umask 0177