@@ -364,8 +364,7 @@
*-*-darwin*)
AC_DEFINE([TARGET_DARWIN], [1], [Are we running on Mac OS X?])
AC_DEFINE_UNQUOTED([TARGET_PREFIX], ["M"], [Target prefix])
- AM_CONDITIONAL([ENABLE_DNS_UPDOWN], [false])
- AC_SUBST([DNS_UPDOWN_TYPE], ["resolvconf_file"])
+ AC_SUBST([DNS_UPDOWN_TYPE], ["macos"])
have_tap_header="yes"
ac_cv_type_struct_in_pktinfo=no
;;
@@ -12,6 +12,7 @@
$(srcdir)/Makefile.in
EXTRA_DIST = \
+ macos-dns-updown.sh \
systemd-dns-updown.sh \
openresolv-dns-updown.sh \
haikuos_file-dns-updown.sh \
new file mode 100644
@@ -0,0 +1,217 @@
+#!/bin/bash
+#
+# dns-updown - add/remove openvpn provided DNS information
+#
+# (C) Copyright 2025 OpenVPN Inc <sales@openvpn.net>
+#
+# SPDX-License-Identifier: BSD-2-Clause
+#
+# Example env from openvpn (most are not applied):
+#
+# dns_vars_file /tmp/openvpn_dvf_58b95c0c97b2db43afb5d745f986c53c.tmp
+#
+# or
+#
+# dev utun0
+# script_type dns-up
+# dns_search_domain_1 mycorp.in
+# dns_search_domain_2 eu.mycorp.com
+# dns_server_1_address_1 192.168.99.254
+# dns_server_1_address_2 fd00::99:53
+# dns_server_1_port_2 53
+# dns_server_1_resolve_domain_1 mycorp.in
+# dns_server_1_resolve_domain_2 eu.mycorp.com
+# dns_server_1_dnssec true
+# dns_server_1_transport DoH
+# dns_server_1_sni dns.mycorp.in
+#
+
+[ -z "${dns_vars_file}" ] || . "${dns_vars_file}"
+
+itf_dns_key="State:/Network/Service/openvpn-${dev}/DNS"
+dns_backup_key="State:/Network/Service/openvpn-${dev}/DnsBackup"
+
+function primary_dns_key {
+ local uuid=$(echo "show State:/Network/Global/IPv4" | /usr/sbin/scutil | grep "PrimaryService" | cut -d: -f2 | xargs)
+ echo "Setup:/Network/Service/${uuid}/DNS"
+}
+
+function only_standard_server_ports {
+ local i=1
+ while :; do
+ local addr_var=dns_server_${n}_address_${i}
+ [ -n "${!addr_var}" ] || return 0
+
+ local port_var=dns_server_${n}_port_${i}
+ [ -z "${!port_var}" -o "${!port_var}" = "53" ] || return 1
+
+ i=$((i+1))
+ done
+}
+
+function find_compat_profile {
+ local n=1
+ while :; do
+ local addr_var=dns_server_${n}_address_1
+ [ -n "${!addr_var}" ] || {
+ echo "setting DNS failed, no compatible server profile"
+ exit 1
+ }
+
+ # Skip server profiles which require DNSSEC,
+ # secure transport or use a custom port
+ local dnssec_var=dns_server_${n}_dnssec
+ local transport_var=dns_server_${n}_transport
+ [ -z "${!transport_var}" -o "${!transport_var}" = "plain" ] \
+ && [ -z "${!dnssec_var}" -o "${!dnssec_var}" = "no" ] \
+ && only_standard_server_ports && break
+
+ n=$((n+1))
+ done
+ return $n
+}
+
+function get_search_domains {
+ local search_domains=""
+ local resolver=0
+ /usr/sbin/scutil --dns | while read line; do
+ if [[ "$line" =~ resolver.# ]]; then
+ resolver=$((resolver+1))
+ elif [ "$resolver" = 1 ] && [[ "$line" =~ search.domain ]]; then
+ search_domains+="$(echo $line | cut -d: -f2 | xargs) "
+ elif [ "$resolver" -gt 1 ]; then
+ echo "$search_domains"
+ break
+ fi
+ done
+}
+
+function set_search_domains {
+ [ -n "$1" ] || return
+ dns_key=$(primary_dns_key)
+ search_domains="${1}$(get_search_domains)"
+
+ local cmds=""
+ cmds+="get ${dns_key}\n"
+ cmds+="d.add SearchDomains * ${search_domains}\n"
+ cmds+="set ${dns_key}\n"
+ echo -e "${cmds}" | /usr/sbin/scutil
+}
+
+function unset_search_domains {
+ [ -n "$1" ] || return
+ dns_key=$(primary_dns_key)
+ search_domains="$(get_search_domains)"
+ search_domains=$(echo $search_domains | sed -e "s/$1//")
+
+ local cmds=""
+ cmds+="get ${dns_key}\n"
+ cmds+="d.add SearchDomains * ${search_domains}\n"
+ cmds+="set ${dns_key}\n"
+ echo -e "${cmds}" | /usr/sbin/scutil
+}
+
+function set_dns {
+ find_compat_profile
+ local n=$?
+
+ local i=1
+ local addrs=""
+ while :; do
+ local addr_var=dns_server_${n}_address_${i}
+ local addr="${!addr_var}"
+ [ -n "$addr" ] || break
+
+ local port_var=dns_server_${n}_port_${i}
+ if [ -n "${!port_var}" ]; then
+ if [[ "$addr" =~ : ]]; then
+ addr="[$addr]"
+ fi
+ addrs+="${addr}:${!port_var}${sni} "
+ else
+ addrs+="${addr}${sni} "
+ fi
+ i=$((i+1))
+ done
+
+ i=1
+ local match_domains=""
+ while :; do
+ domain_var=dns_server_${n}_resolve_domain_${i}
+ [ -n "${!domain_var}" ] || break
+ # Add as match domain, if it doesn't already exist
+ [[ "$match_domains" =~ (^| )${!domain_var}( |$) ]] \
+ || match_domains+="${!domain_var} "
+ i=$((i+1))
+ done
+
+ i=1
+ local search_domains=""
+ while :; do
+ domain_var=dns_search_domain_${i}
+ [ -n "${!domain_var}" ] || break
+ # Add as search domain, if it doesn't already exist
+ [[ "$search_domains" =~ (^| )${!domain_var}( |$) ]] \
+ || search_domains+="${!domain_var} "
+ i=$((i+1))
+ done
+
+ if [ -n "$match_domains" ]; then
+ local cmds=""
+ cmds+="d.init\n"
+ cmds+="d.add ServerAddresses * ${addrs}\n"
+ cmds+="d.add SupplementalMatchDomains * ${match_domains}\n"
+ cmds+="d.add SupplementalMatchDomainsNoSearch # 1\n"
+ cmds+="add ${itf_dns_key}\n"
+ echo -e "${cmds}" | /usr/sbin/scutil
+ set_search_domains "$search_domains"
+ else
+ local cmds=""
+ cmds+="get $(primary_dns_key)\n"
+ cmds+="set ${dns_backup_key}\n"
+ cmds+="d.init\n"
+ cmds+="d.add ServerAddresses * ${addrs}\n"
+ cmds+="d.add SearchDomains * ${search_domains}\n"
+ cmds+="d.add SearchOrder # 5000\n"
+ cmds+="set $(primary_dns_key)\n"
+ echo -e "${cmds}" | /usr/sbin/scutil
+ fi
+
+ /usr/bin/dscacheutil -flushcache
+}
+
+function unset_dns {
+ find_compat_profile
+ local n=$?
+
+ local i=1
+ local search_domains=""
+ while :; do
+ domain_var=dns_search_domain_${i}
+ [ -n "${!domain_var}" ] || break
+ # Add as search domain, if it doesn't already exist
+ [[ "$search_domains" =~ (^| )${!domain_var}( |$) ]] \
+ || search_domains+="${!domain_var} "
+ i=$((i+1))
+ done
+
+ domain_var=dns_server_${n}_resolve_domain_1
+ if [ -n "${!domain_var}" ]; then
+ echo "remove ${itf_dns_key}" | /usr/sbin/scutil
+ unset_search_domains "$search_domains"
+ else
+ local cmds=""
+ cmds+="get ${dns_backup_key}\n"
+ cmds+="set $(primary_dns_key)\n"
+ cmds+="remove ${dns_backup_key}\n"
+ echo -e "${cmds}" | /usr/sbin/scutil
+ fi
+
+ /usr/bin/dscacheutil -flushcache
+}
+
+if [ "$script_type" = "dns-up" ]; then
+ set_dns
+else
+ unset_dns
+fi