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Implement custom DNS option

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Closes #889 #1104 #1108 #1118
This commit is contained in:
Nyr 2025-03-10 19:51:30 +01:00
parent 750e839a5f
commit 6f16ad55a0
1 changed files with 31 additions and 2 deletions
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33
openvpn-install.sh
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@ -184,17 +184,41 @@ if [[ ! -e /etc/openvpn/server/server.conf ]]; then
[[ -z "$port" ]] && port="1194"
echo
echo "Select a DNS server for the clients:"
echo " 1) Current system resolvers"
echo " 1) Default system resolvers"
echo " 2) Google"
echo " 3) 1.1.1.1"
echo " 4) OpenDNS"
echo " 5) Quad9"
echo " 6) AdGuard"
echo " 7) Specify custom resolvers"
read -p "DNS server [1]: " dns
until [[ -z "$dns" || "$dns" =~ ^[1-6]$ ]]; do
until [[ -z "$dns" || "$dns" =~ ^[1-7]$ ]]; do
echo "$dns: invalid selection."
read -p "DNS server [1]: " dns
done
# If the user selected custom resolvers, we deal with that here
if [[ "$dns" = "7" ]]; then
echo
until [[ -n "$custom_dns" ]]; do
echo "Enter DNS servers (one or more IPv4 addresses, separated by commas or spaces):"
read -p "DNS servers: " dns_input
# Convert comma delimited to space delimited
dns_input=$(echo "$dns_input" | tr ',' ' ')
# Validate and build custom DNS IP list
for dns_ip in $dns_input; do
if [[ "$dns_ip" =~ ^[0-9]{1,3}(\.[0-9]{1,3}){3}$ ]]; then
if [[ -z "$custom_dns" ]]; then
custom_dns="$dns_ip"
else
custom_dns="$custom_dns $dns_ip"
fi
fi
done
if [ -z "$custom_dns" ]; then
echo "Invalid input."
fi
done
fi
echo
echo "Enter a name for the first client:"
read -p "Name [client]: " unsanitized_client
@ -321,6 +345,11 @@ server 10.8.0.0 255.255.255.0" > /etc/openvpn/server/server.conf
echo 'push "dhcp-option DNS 94.140.14.14"' >> /etc/openvpn/server/server.conf
echo 'push "dhcp-option DNS 94.140.15.15"' >> /etc/openvpn/server/server.conf
;;
7)
for dns_ip in $custom_dns; do
echo "push \"dhcp-option DNS $dns_ip\"" >> /etc/openvpn/server/server.conf
done
;;
esac
echo 'push "block-outside-dns"' >> /etc/openvpn/server/server.conf
echo "keepalive 10 120