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Support pushing custom DNS servers

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This commit is contained in:
Johannes 'fish' Ziemke 2015-10-16 15:41:22 +02:00
parent 98cf2128c7
commit edfbffb85f
1 changed files with 14 additions and 4 deletions
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18
bin/ovpn_genconfig
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@ -37,11 +37,12 @@ usage() {
echo " [-s SERVER_SUBNET]"
echo " [-r ROUTE ...]"
echo " [-p PUSH ...]"
echo " [-n DNS_SERVER ...]"
echo
echo "optional arguments:"
echo " -d Disable NAT routing and default route"
echo " -c Enable client-to-client option"
echo " -D Disable built in external dns (google dns)"
echo " -D Do not push dns servers"
echo " -N Configure NAT to access external server network"
echo " -m Set client MTU"
echo " -t Use TAP device (instead of TUN device)"
@ -67,6 +68,8 @@ OVPN_ROUTES=()
TMP_ROUTES=()
OVPN_PUSH=()
TMP_PUSH=()
OVPN_DNS_SERVERS=("8.8.8.8" "8.8.4.4")
TMP_DNS_SERVERS=()
OVPN_TLS_CIPHER=''
OVPN_CIPHER=''
OVPN_AUTH=''
@ -75,7 +78,7 @@ OVPN_AUTH=''
[ -r "$OVPN_ENV" ] && source "$OVPN_ENV"
# Parse arguments
while getopts ":a:C:T:r:s:du:cp:DNm:t" opt; do
while getopts ":a:C:T:r:s:du:cp:n:DNm:t" opt; do
case $opt in
a)
OVPN_AUTH="$OPTARG"
@ -104,6 +107,9 @@ while getopts ":a:C:T:r:s:du:cp:DNm:t" opt; do
p)
TMP_PUSH+=("$OPTARG")
;;
n)
TMP_DNS_SERVERS+=("$OPTARG")
;;
D)
OVPN_DNS=0
;;
@ -137,6 +143,9 @@ done
# if new push directives were not defined with -p, use default
[ ${#TMP_PUSH[@]} -gt 0 ] && OVPN_PUSH=("${TMP_PUSH[@]}")
# if dns servers were not defined with -n, use google nameservers
[ ${#TMP_DNS_SERVERS[@]} -gt 0 ] && OVPN_DNS_SERVERS=("${TMP_DNS_SERVERS[@]}")
# Server name is in the form "udp://vpn.example.com:1194"
if [[ "$OVPN_SERVER_URL" =~ ^((udp|tcp)://)?([0-9a-zA-Z\.\-]+)(:([0-9]+))?$ ]]; then
OVPN_PROTO=${BASH_REMATCH[2]};
@ -202,8 +211,9 @@ EOF
[ -n "$OVPN_AUTH" ] && echo "auth $OVPN_AUTH" >> "$conf"
[ -n "$OVPN_CLIENT_TO_CLIENT" ] && echo "client-to-client" >> "$conf"
[ "$OVPN_DNS" == "1" ] && echo push "dhcp-option DNS 8.8.4.4" >> "$conf"
[ "$OVPN_DNS" == "1" ] && echo push "dhcp-option DNS 8.8.8.8" >> "$conf"
for i in "${OVPN_DNS_SERVERS[@]}"; do
echo "push dhcp-option DNS $i" >> "$conf"
done
# Append Routes
for i in "${OVPN_ROUTES[@]}"; do
# If user passed "0" skip this, assume no extra routes