2 # Begin $rc_base/init.d/unbound
4 # Description : Unbound DNS resolver boot script for IPfire
5 # Author : Marcel Lorenz <marcel.lorenz@ipfire.org>
10 TEST_DOMAIN
="ipfire.org"
12 # This domain will never validate
13 TEST_DOMAIN_FAIL
="dnssec-failed.org"
17 # Cache any local zones for 60 seconds
20 # Load optional configuration
21 [ -e "/etc/sysconfig/unbound" ] && .
/etc
/sysconfig
/unbound
25 IFS
=.
read -r i1 i2 i3 i4
<<< ${1}
26 IFS
=.
read -r m1 m2 m3
m4 <<< ${2}
27 cidr
=$
(printf "%d.%d.%d.%d\n" "$((i1 & m1))" "$((i2 & m2))" "$((i3 & m3))" "$((i4 & m4))")
41 *) echo "Error: $dec is not recognised"; exit 1
44 echo "${cidr}/${nbits}"
51 IFS
=.
read -r a1 a2 a3 a4
<<< ${addr}
53 echo "${a4}.${a3}.${a2}.${a1}.in-addr.arpa"
59 echo "$(</var/ipfire/red/dns${i})"
64 echo "# This file is automatically generated and any changes"
65 echo "# will be overwritten. DO NOT EDIT!"
70 if [ "${USE_FORWARDERS}" = "1" -a -e "/var/ipfire/red/active" ]; then
72 local broken_forwarders
75 for ns
in $
(read_name_servers
); do
76 test_name_server
${ns} &>/dev
/null
78 # Only use DNSSEC-validating or DNSSEC-aware name servers
80 forwarders
="${forwarders} ${ns}"
83 broken_forwarders
="${broken_forwarders} ${ns}"
88 # Show warning for any broken upstream name servers
89 if [ -n "${broken_forwarders}" ]; then
90 boot_mesg
"Ignoring broken upstream name server(s): ${broken_forwarders:1}" ${WARNING}
94 if [ -n "${broken_forwarders}" -a -z "${forwarders}" ]; then
95 boot_mesg
"Falling back to recursor mode" ${WARNING}
98 elif [ -n "${forwarders}" ]; then
99 boot_mesg
"Configuring upstream name server(s): ${forwarders:1}" ${INFO}
102 echo "${forwarders}" > /var
/ipfire
/red
/dns
103 unbound-control
-q forward
${forwarders}
108 # If forwarders cannot be used we run in recursor mode
109 echo "local recursor" > /var
/ipfire
/red
/dns
110 unbound-control
-q forward off
114 local hostname
=$
(hostname
-f)
115 # 1.1.1.1 is reserved for green only, skip this
116 if [ -n "${GREEN_ADDRESS}" -a "${GREEN_ADDRESS}" != "1.1.1.1" ]; then
117 unbound-control
-q local_data
"${hostname} ${LOCAL_TTL} IN A ${GREEN_ADDRESS}"
121 for address
in ${GREEN_ADDRESS} ${BLUE_ADDRESS} ${ORANGE_ADDRESS}; do
122 [ -n "${address}" ] ||
continue
123 [ "${address}" = "1.1.1.1" ] && continue
125 address
=$
(ip_address_revptr
${address})
126 unbound-control
-q local_data
"${address} ${LOCAL_TTL} IN PTR ${hostname}"
131 local enabled address hostname domainname
133 while IFS
="," read -r enabled address hostname domainname
; do
134 [ "${enabled}" = "on" ] ||
continue
137 local fqdn
="${hostname}.${domainname}"
139 unbound-control
-q local_data
"${fqdn} ${LOCAL_TTL} IN A ${address}"
142 address
=$
(ip_address_revptr
${address})
143 unbound-control
-q local_data
"${address} ${LOCAL_TTL} IN PTR ${fqdn}"
144 done < /var
/ipfire
/main
/hosts
147 write_interfaces_conf
() {
151 if [ -n "${GREEN_ADDRESS}" ]; then
153 echo "interface: ${GREEN_ADDRESS}"
154 echo "access-control: $(cidr ${GREEN_NETADDRESS} ${GREEN_NETMASK}) allow"
157 if [ -n "${BLUE_ADDRESS}" ]; then
159 echo "interface: ${BLUE_ADDRESS}"
160 echo "access-control: $(cidr ${BLUE_NETADDRESS} ${BLUE_NETMASK}) allow"
162 ) > /etc
/unbound
/interfaces.conf
165 write_forward_conf
() {
169 local enabled zone server remark
170 while IFS
="," read -r enabled zone server remark
; do
171 # Line must be enabled.
172 [ "${enabled}" = "on" ] ||
continue
175 echo " name: ${zone}"
176 echo " forward-addr: ${server}"
178 done < /var
/ipfire
/dnsforward
/config
179 ) > /etc
/unbound
/forward.conf
182 write_tuning_conf
() {
183 # https://www.unbound.net/documentation/howto_optimise.html
185 # Determine number of online processors
186 local processors
=$
(getconf _NPROCESSORS_ONLN
)
188 # Determine number of slabs
190 while [ ${slabs} -lt ${processors} ]; do
191 slabs
=$
(( ${slabs} * 2 ))
194 # Determine amount of system memory
195 local mem
=$
(get_memory_amount
)
197 # In the worst case scenario, unbound can use double the
198 # amount of memory allocated to a cache due to malloc overhead
200 # Large systems with more than 2GB of RAM
201 if [ ${mem} -ge 2048 ]; then
204 # Small systems with less than 256MB of RAM
205 elif [ ${mem} -le 256 ]; then
216 # We run one thread per processor
217 echo "num-threads: ${processors}"
219 # Adjust number of slabs
220 echo "infra-cache-slabs: ${slabs}"
221 echo "key-cache-slabs: ${slabs}"
222 echo "msg-cache-slabs: ${slabs}"
223 echo "rrset-cache-slabs: ${slabs}"
226 echo "rrset-cache-size: $(( ${mem} / 2 ))m"
227 echo "msg-cache-size: $(( ${mem} / 4 ))m"
228 echo "key-cache-size: $(( ${mem} / 4 ))m"
229 ) > /etc
/unbound
/tuning.conf
232 get_memory_amount
() {
235 while read -r key val unit
; do
239 echo "$(( ${val} / 1024 ))"
250 # 0 DNSSEC validating
251 # 1 Error: unreachable, etc.
255 # Exit when the server is not reachable
256 ns_is_online
${ns} ||
return 1
258 # Return 0 if validating
259 ns_is_validating
${ns} && return 0
262 for rr
in DNSKEY DS RRSIG
; do
263 if ! ns_forwards_
${rr} ${ns}; then
264 errors
="${errors} ${rr}"
268 if [ -n "${errors}" ]; then
269 echo >&2 "Unable to retrieve the following resource records from ${ns}: ${errors:1}"
277 # Sends an A query to the nameserver w/o DNSSEC
281 dig @
${ns} +nodnssec A
${TEST_DOMAIN} >/dev
/null
284 # Resolving ${TEST_DOMAIN_FAIL} will fail if the nameserver is validating
288 dig @
${ns} A
${TEST_DOMAIN_FAIL} |
grep -q SERVFAIL
291 # Checks if we can retrieve the DNSKEY for this domain.
292 # dig will print the SOA if nothing was found
293 ns_forwards_DNSKEY
() {
296 dig @
${ns} DNSKEY
${TEST_DOMAIN} |
grep -qv SOA
302 dig @
${ns} DS
${TEST_DOMAIN} |
grep -qv SOA
305 ns_forwards_RRSIG
() {
308 dig @
${ns} +dnssec A
${TEST_DOMAIN} |
grep -q RRSIG
314 dig @
${ns} +tcp A
${TEST_DOMAIN} >/dev
/null ||
return 1
319 # Print a nicer messagen when unbound is already running
320 if pidofproc
-s unbound
; then
321 statusproc
/usr
/sbin
/unbound
325 eval $
(/usr
/local
/bin
/readhash
/var
/ipfire
/ethernet
/settings
)
327 # Create control keys at first run
328 if [ ! -r "/etc/unbound/unbound_control.key" ]; then
329 unbound-control-setup
-d /etc
/unbound
&>/dev
/null
332 # Update configuration files
334 write_interfaces_conf
337 boot_mesg
"Starting Unbound DNS Proxy..."
338 loadproc
/usr
/sbin
/unbound ||
exit $?
340 # Make own hostname resolveable
343 # Update any known forwarding name servers
351 boot_mesg
"Stopping Unbound DNS Proxy..."
352 killproc
/usr
/sbin
/unbound
362 statusproc
/usr
/sbin
/unbound
372 test_name_server
${ns}
377 echo "${ns} is validating"
380 echo "${ns} is DNSSEC-aware"
383 echo "${ns} is NOT DNSSEC-aware"
386 echo "Test failed for an unknown reason"
390 if ns_supports_tcp
${ns}; then
391 echo "${ns} supports TCP fallback"
393 echo "${ns} does not support TCP fallback"
400 echo "Usage: $0 {start|stop|restart|status|update-forwarders|test-name-server}"
405 # End $rc_base/init.d/unbound