# Cache any local zones for 60 seconds
LOCAL_TTL=60
-# EDNS buffer size
-EDNS_DEFAULT_BUFFER_SIZE=4096
-
# Load optional configuration
[ -e "/etc/sysconfig/unbound" ] && . /etc/sysconfig/unbound
esac
done
- # Determine EDNS buffer size
- local new_edns_buffer_size=${EDNS_DEFAULT_BUFFER_SIZE}
-
- for ns in ${forwarders}; do
- local edns_buffer_size=$(ns_determine_edns_buffer_size ${ns})
- if [ -n "${edns_buffer_size}" ]; then
- if [ ${edns_buffer_size} -lt ${new_edns_buffer_size} ]; then
- new_edns_buffer_size=${edns_buffer_size}
- fi
- fi
- done
-
- if [ ${new_edns_buffer_size} -lt ${EDNS_DEFAULT_BUFFER_SIZE} ]; then
- boot_mesg "EDNS buffer size reduced to ${new_edns_buffer_size}" ${WARNING}
- echo_warning
-
- unbound-control -q set_option edns-buffer-size: ${new_edns_buffer_size}
- fi
-
# Show warning for any broken upstream name servers
if [ -n "${broken_forwarders}" ]; then
boot_mesg "Ignoring broken upstream name server(s): ${broken_forwarders:1}" ${WARNING}
# In case we have found no working forwarders
else
# Test if the recursor mode is available
- if can_resolve_root +bufsize=${new_edns_buffer_size}; then
+ if can_resolve_root; then
# Make sure DNSSEC is activated
enable_dnssec
# Exit when the server is not reachable
ns_is_online ${ns} || return 1
- # Determine the maximum edns buffer size that works
- local edns_buffer_size=$(ns_determine_edns_buffer_size ${ns})
- if [ -n "${edns_buffer_size}" ]; then
- args="${args} +bufsize=${edns_buffer_size}"
- fi
-
local errors
for rr in DNSKEY DS RRSIG; do
if ! ns_forwards_${rr} ${ns} ${args}; then
dig "${DIG_ARGS[@]}" @${ns} +tcp A ${TEST_DOMAIN} $@ >/dev/null || return 1
}
-ns_determine_edns_buffer_size() {
- local ns=${1}
- shift
-
- local b
- for b in 4096 2048 1500 1480 1464 1400 1280 512; do
- if dig "${DIG_ARGS[@]}" @${ns} +dnssec +bufsize=${b} A ${TEST_DOMAIN} $@ >/dev/null; then
- echo "${b}"
- return 0
- fi
- done
-
- return 1
-}
-
get_root_nameservers() {
while read -r hostname ttl record address; do
# Searching for A records
}
# Sets up Safe Search for various search engines
-write_safe_search_conf() {
+update_safe_search() {
local google_tlds=(
google.ad
google.ae
google.ws
)
- (
- # Nothing to do if safe search is not enabled
- if [ "${ENABLE_SAFE_SEARCH}" != "on" ]; then
- exit 0
- fi
+ # Cleanup previous settings
+ unbound-control local_zone_remove "bing.com" >/dev/null
+ unbound-control local_zone_remove "duckduckgo.com" >/dev/null
+ unbound-control local_zone_remove "yandex.com" >/dev/null
+ unbound-control local_zone_remove "yandex.ru" >/dev/null
+ unbound-control local_zone_remove "youtube.com" >/dev/null
- # This all belongs into the server: section
- echo "server:"
+ local domain
+ for domain in ${google_tlds[@]}; do
+ unbound-control local_zone_remove "${domain}"
+ done >/dev/null
- # Bing
- echo " local-zone: bing.com transparent"
- for address in $(resolve "strict.bing.com"); do
- echo " local-data: \"www.bing.com ${LOCAL_TTL} IN A ${address}\""
- done
+ # Nothing to do if safe search is not enabled
+ if [ "${ENABLE_SAFE_SEARCH}" != "on" ]; then
+ return 0
+ fi
- # DuckDuckGo
- echo " local-zone: duckduckgo.com typetransparent"
- for address in $(resolve "safe.duckduckgo.com"); do
- echo " local-data: \"duckduckgo.com ${LOCAL_TTL} IN A ${address}\""
- done
+ # Bing
+ unbound-control bing.com transparent >/dev/null
+ for address in $(resolve "strict.bing.com"); do
+ unbound-control local_data "www.bing.com ${LOCAL_TTL} IN A ${address}"
+ done >/dev/null
+
+ # DuckDuckGo
+ unbound-control local_zone duckduckgo.com typetransparent >/dev/null
+ for address in $(resolve "safe.duckduckgo.com"); do
+ unbound-control local_data "duckduckgo.com ${LOCAL_TTL} IN A ${address}"
+ done >/dev/null
+
+ # Google
+ local addresses="$(resolve "forcesafesearch.google.com")"
+ for domain in ${google_tlds[@]}; do
+ unbound-control local_zone "${domain}" transparent >/dev/null
+ for address in ${addresses}; do
+ unbound-control local_data: "www.${domain} ${LOCAL_TTL} IN A ${address}"
+ done >/dev/null
+ done
- # Google
- addresses="$(resolve "forcesafesearch.google.com")"
- local domain
- for domain in ${google_tlds[@]}; do
- echo " local-zone: ${domain} transparent"
- for address in ${addresses}; do
- echo " local-data: \"www.${domain} ${LOCAL_TTL} IN A ${address}\""
- done
- done
+ # Yandex
+ for domain in yandex.com yandex.ru; do
+ unbound-control local_zone "${domain}" typetransparent >/dev/null
+ for address in $(resolve "familysearch.${domain}"); do
+ unbound-control local_data "${domain} ${LOCAL_TTL} IN A ${address}"
+ done >/dev/null
+ done
- # Yandex
- for domain in yandex.com yandex.ru; do
- echo " local-zone: ${domain} typetransparent"
- for address in $(resolve "familysearch.${domain}"); do
- echo " local-data: \"${domain} ${LOCAL_TTL} IN A ${address}\""
- done
- done
+ # YouTube
+ unbound-control local_zone youtube.com transparent >/dev/null
+ for address in $(resolve "restrictmoderate.youtube.com"); do
+ unbound-control local_data "www.youtube.com ${LOCAL_TTL} IN A ${address}"
+ done >/dev/null
- # YouTube
- echo " local-zone: youtube.com transparent"
- for address in $(resolve "restrictmoderate.youtube.com"); do
- echo " local-data: \"www.youtube.com ${LOCAL_TTL} IN A ${address}\""
- done
- ) > /etc/unbound/safe-search.conf
+ return 0
}
case "$1" in
# Update configuration files
write_tuning_conf
write_forward_conf
- write_safe_search_conf
boot_mesg "Starting Unbound DNS Proxy..."
loadproc /usr/sbin/unbound || exit $?
# Update any known forwarding name servers
update_forwarders
+ # Install Safe Search rules when the system is already online
+ if [ -e "/var/ipfire/red/active" ]; then
+ update_safe_search
+ fi
+
# Update hosts
update_hosts
echo "${ns} does not support TCP fallback"
fi
- edns_buffer_size=$(ns_determine_edns_buffer_size ${ns})
- if [ -n "${edns_buffer_size}" ]; then
- echo "EDNS buffer size for ${ns}: ${edns_buffer_size}"
- fi
-
exit ${ret}
;;
resolve "${2}"
;;
+ update-safe-search)
+ update_safe_search
+ ;;
+
*)
- echo "Usage: $0 {start|stop|restart|status|update-forwarders|remove-forwarders|test-name-server|resolve}"
+ echo "Usage: $0 {start|stop|restart|status|update-forwarders|remove-forwarders|test-name-server|resolve|update-safe-search}"
exit 1
;;
esac