[people/pmueller/ipfire-2.x.git] / src / initscripts / system / unbound

#!/bin/sh
# Begin $rc_base/init.d/unbound

# Description : Unbound DNS resolver boot script for IPfire
# Author      : Marcel Lorenz <marcel.lorenz@ipfire.org>

. /etc/sysconfig/rc
. ${rc_functions}

# Cache any local zones for 60 seconds
LOCAL_TTL=60

# Load configuration
eval $(/usr/local/bin/readhash /var/ipfire/dns/settings)
eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)

ip_address_revptr() {
	local addr=${1}

	local a1 a2 a3 a4
	IFS=. read -r a1 a2 a3 a4 <<< ${addr}

	echo "${a4}.${a3}.${a2}.${a1}.in-addr.arpa"
}

read_name_servers() {
	# Read name servers from ISP
	if [ "${USE_ISP_NAMESERVERS}" = "on" -a "${PROTO}" != "TLS" ]; then
		local i
		for i in 1 2; do
			echo "$(</var/run/dns${i})"
		done 2>/dev/null
	fi

	# Read configured name servers
	local id address tls_hostname enabled remark
	while IFS="," read -r id address tls_hostname enabled remark; do
		[ "${enabled}" != "enabled" ] && continue

		if [ "${PROTO}" = "TLS" ]; then
			if [ -n "${tls_hostname}" ]; then
				echo "${address}@853#${tls_hostname}"
			fi
		else
			echo "${address}"
		fi
	done < /var/ipfire/dns/servers
}

config_header() {
	echo "# This file is automatically generated and any changes"
	echo "# will be overwritten. DO NOT EDIT!"
	echo
}

write_hosts_conf() {
	(
		config_header

		# Make own hostname resolveable
		# 1.1.1.1 is reserved for unused green, skip this
		if [ -n "${GREEN_ADDRESS}" -a "${GREEN_ADDRESS}" != "1.1.1.1" ]; then
			echo "local-data: \"${HOSTNAME} ${LOCAL_TTL} IN A ${GREEN_ADDRESS}\""
		fi

		local address
		for address in ${GREEN_ADDRESS} ${BLUE_ADDRESS} ${ORANGE_ADDRESS}; do
			[ -n "${address}" ] || continue
			[ "${address}" = "1.1.1.1" ] && continue

			address=$(ip_address_revptr ${address})
			echo "local-data: \"${address} ${LOCAL_TTL} IN PTR ${HOSTNAME}\""
		done

		local enabled address hostname domainname generateptr

		# Find all unique domain names
		while IFS="," read -r enabled address hostname domainname generateptr; do
			[ "${enabled}" = "on" ] || continue

			echo "${domainname}"
		done < /var/ipfire/main/hosts | sort -u | while read -r domainname; do
			echo "local-zone: ${domainname} typetransparent"
		done

		# Add all hosts
		while IFS="," read -r enabled address hostname domainname generateptr; do
			[ "${enabled}" = "on" ] || continue

			# Build FQDN
			local fqdn="${hostname}.${domainname}"
			echo "local-data: \"${fqdn} ${LOCAL_TTL} IN A ${address}\""

			# Skip reverse resolution if the address equals the GREEN address
			[ "${address}" = "${GREEN_ADDRESS}" ] && continue

			# Skip reverse resolution if user requested not to do so
			[ "${generateptr}" = "off" ] && continue

			# Add RDNS
			address=$(ip_address_revptr ${address})
			echo "local-data: \"${address} ${LOCAL_TTL} IN PTR ${fqdn}\""
		done < /var/ipfire/main/hosts
	) > /etc/unbound/hosts.conf
}

write_forward_conf() {
	(
		config_header

		# Enable strict QNAME minimisation
		if [ "${QNAME_MIN}" = "strict" ]; then
			echo "server:"
			echo "	qname-minimisation-strict: yes"
			echo
		fi

		# Force using TCP for upstream servers only
		if [ "${PROTO}" = "TCP" ]; then
			echo "# Force using TCP for upstream servers only"
			echo "server:"
			echo "	tcp-upstream: yes"
			echo
		fi

		local insecure_zones=""

		local enabled zone server servers remark disable_dnssec rest
		while IFS="," read -r enabled zone servers remark disable_dnssec rest; do
			# Line must be enabled.
			[ "${enabled}" = "on" ] || continue

			# Zones that end with .local are commonly used for internal
			# zones and therefore not signed
			case "${zone}" in
				*.local)
					insecure_zones="${insecure_zones} ${zone}"
					;;
				*)
					if [ "${disable_dnssec}" = "on" ]; then
						insecure_zones="${insecure_zones} ${zone}"
					fi
					;;
			esac

			echo "stub-zone:"
			echo "	name: ${zone}"
			for server in ${servers//|/ }; do
				if [[ ${server} =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
					echo "	stub-addr: ${server}"
				else
					echo "	stub-host: ${server}"
				fi
			done
			echo

			# Make all reverse lookup zones transparent
			case "${zone}" in
				*.in-addr.arpa)
					echo "server:"
					echo "	local-zone: \"${zone}\" transparent"
					echo
					;;
			esac
		done < /var/ipfire/dnsforward/config

		if [ -n "${insecure_zones}" ]; then
			echo "server:"

			for zone in ${insecure_zones}; do
				echo "	domain-insecure: ${zone}"
			done
		fi

		# Read name servers.
		nameservers=$(read_name_servers)

		# Only write forward zones if any nameservers are configured.
		#
		# Otherwise fall-back into recursor mode.
		if [ -n "${nameservers}" ]; then

			echo "forward-zone:"
			echo "	name: \".\""

			# Force using TLS only
			if [ "${PROTO}" = "TLS" ]; then
				echo "	forward-tls-upstream: yes"
			fi

			# Add upstream name servers
			local ns
			for ns in ${nameservers}; do
				echo "	forward-addr: ${ns}"
			done
		fi

	) > /etc/unbound/forward.conf
}

write_tuning_conf() {
	# https://www.unbound.net/documentation/howto_optimise.html

	# Determine amount of system memory
	local mem=$(get_memory_amount)

	# In the worst case scenario, unbound can use double the
	# amount of memory allocated to a cache due to malloc overhead

	# Even larger systems with more than 8GB of RAM
	if [ ${mem} -ge 8192 ]; then
		mem=1024

	# Extra large systems with more than 4GB of RAM
	elif [ ${mem} -ge 4096 ]; then
		mem=512

	# Large systems with more than 2GB of RAM
	elif [ ${mem} -ge 2048 ]; then
		mem=256

	# Medium systems with more than 1GB of RAM
	elif [ ${mem} -ge 1024 ]; then
		mem=128

	# Small systems with less than 256MB of RAM
	elif [ ${mem} -le 256 ]; then
		mem=16

	# Everything else
	else
		mem=64
	fi

	(
		config_header

		# Slice up the cache
		echo "rrset-cache-size: $(( ${mem} / 2 ))m"
		echo "msg-cache-size: $(( ${mem} / 4 ))m"
		echo "key-cache-size: $(( ${mem} / 4 ))m"

		# Increase parallel queries
		echo "outgoing-range: 8192"
		echo "num-queries-per-thread: 4096"

		# Use larger send/receive buffers
		echo "so-sndbuf: 4m"
		echo "so-rcvbuf: 4m"
	) > /etc/unbound/tuning.conf
}

get_memory_amount() {
	local key val unit

	while read -r key val unit; do
		case "${key}" in
			MemTotal:*)
				# Convert to MB
				echo "$(( ${val} / 1024 ))"
				break
				;;
		esac
	done < /proc/meminfo
}

fix_time_if_dns_fails() {
	# If DNS is working, everything is fine
	if resolve "ping.ipfire.org" &>/dev/null; then
		return 0
	fi

	# Try to sync time with a known time server
	boot_mesg "DNS not functioning... Trying to sync time with ntp.ipfire.org (81.3.27.46)..."
	loadproc /usr/local/bin/settime 81.3.27.46
}

resolve() {
	local hostname="${1}"
	local found=1

	local answer
	for answer in $(dig +short A "${hostname}"); do
		# Filter out non-IP addresses
		if [[ ! "${answer}" =~ \.$ ]]; then
			found=0
			echo "${answer}"
		fi
	done

	return ${found}
}

# Sets up Safe Search for various search engines
update_safe_search() {
	local google_tlds=(
		google.ad
		google.ae
		google.al
		google.am
		google.as
		google.at
		google.az
		google.ba
		google.be
		google.bf
		google.bg
		google.bi
		google.bj
		google.bs
		google.bt
		google.by
		google.ca
		google.cat
		google.cd
		google.cf
		google.cg
		google.ch
		google.ci
		google.cl
		google.cm
		google.cn
		google.co.ao
		google.co.bw
		google.co.ck
		google.co.cr
		google.co.id
		google.co.il
		google.co.in
		google.co.jp
		google.co.ke
		google.co.kr
		google.co.ls
		google.com
		google.co.ma
		google.com.af
		google.com.ag
		google.com.ai
		google.com.ar
		google.com.au
		google.com.bd
		google.com.bh
		google.com.bn
		google.com.bo
		google.com.br
		google.com.bz
		google.com.co
		google.com.cu
		google.com.cy
		google.com.do
		google.com.ec
		google.com.eg
		google.com.et
		google.com.fj
		google.com.gh
		google.com.gi
		google.com.gt
		google.com.hk
		google.com.jm
		google.com.kh
		google.com.kw
		google.com.lb
		google.com.ly
		google.com.mm
		google.com.mt
		google.com.mx
		google.com.my
		google.com.na
		google.com.nf
		google.com.ng
		google.com.ni
		google.com.np
		google.com.om
		google.com.pa
		google.com.pe
		google.com.pg
		google.com.ph
		google.com.pk
		google.com.pr
		google.com.py
		google.com.qa
		google.com.sa
		google.com.sb
		google.com.sg
		google.com.sl
		google.com.sv
		google.com.tj
		google.com.tr
		google.com.tw
		google.com.ua
		google.com.uy
		google.com.vc
		google.com.vn
		google.co.mz
		google.co.nz
		google.co.th
		google.co.tz
		google.co.ug
		google.co.uk
		google.co.uz
		google.co.ve
		google.co.vi
		google.co.za
		google.co.zm
		google.co.zw
		google.cv
		google.cz
		google.de
		google.dj
		google.dk
		google.dm
		google.dz
		google.ee
		google.es
		google.fi
		google.fm
		google.fr
		google.ga
		google.ge
		google.gg
		google.gl
		google.gm
		google.gp
		google.gr
		google.gy
		google.hn
		google.hr
		google.ht
		google.hu
		google.ie
		google.im
		google.iq
		google.is
		google.it
		google.je
		google.jo
		google.kg
		google.ki
		google.kz
		google.la
		google.li
		google.lk
		google.lt
		google.lu
		google.lv
		google.md
		google.me
		google.mg
		google.mk
		google.ml
		google.mn
		google.ms
		google.mu
		google.mv
		google.mw
		google.ne
		google.nl
		google.no
		google.nr
		google.nu
		google.pl
		google.pn
		google.ps
		google.pt
		google.ro
		google.rs
		google.ru
		google.rw
		google.sc
		google.se
		google.sh
		google.si
		google.sk
		google.sm
		google.sn
		google.so
		google.sr
		google.st
		google.td
		google.tg
		google.tk
		google.tl
		google.tm
		google.tn
		google.to
		google.tt
		google.vg
		google.vu
		google.ws
	)

	# 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

	local domain
	for domain in ${google_tlds[@]}; do
		unbound-control local_zone_remove "${domain}"
	done >/dev/null

	# Nothing to do if safe search is not enabled
	if [ "${ENABLE_SAFE_SEARCH}" != "on" ]; then
		return 0
	fi

	# 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

	# 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

	# 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

	return 0
}

case "$1" in
	start)
		# Print a nicer messagen when unbound is already running
		if pidofproc -s unbound; then
			statusproc /usr/sbin/unbound
			exit 0
		fi

		# Update configuration files
		write_tuning_conf
		write_hosts_conf
		write_forward_conf

		boot_mesg "Starting Unbound DNS Proxy..."
		loadproc /usr/sbin/unbound || exit $?

		# Install Safe Search rules when the system is already online
		if [ -e "/var/ipfire/red/active" ]; then
			update_safe_search
		fi
		;;

	stop)
		boot_mesg "Stopping Unbound DNS Proxy..."
		killproc /usr/sbin/unbound
		;;

	restart)
		$0 stop
		sleep 1
		$0 start
		;;
	reload|update-forwarders)
		# Update configuration files
		write_forward_conf
		write_hosts_conf

		# Call unbound-control and perform the reload
		/usr/sbin/unbound-control -q reload

		# Dummy Resolve to wait for unbound
		resolve "ping.ipfire.org" &>/dev/null

		if [ "$1" = "update-forwarders" ]; then
			# Make sure DNS works at this point
			fix_time_if_dns_fails
		fi

		# Update Safe Search rules if the system is online.
		if [ -e "/var/ipfire/red/active" ]; then
			update_safe_search
		fi
		;;

	status)
		statusproc /usr/sbin/unbound
		;;

	resolve)
		resolve "${2}" || exit $?
		;;

	*)
		echo "Usage: $0 {start|stop|restart|reload|status|resolve|update-forwarders}"
		exit 1
		;;
esac

# End $rc_base/init.d/unbound
Commit	Line	Data
d0e5f71f ML	1	#!/bin/sh
	2	# Begin $rc_base/init.d/unbound
	3
	4	# Description : Unbound DNS resolver boot script for IPfire
	5	# Author : Marcel Lorenz <marcel.lorenz@ipfire.org>
d0e5f71f ML	6
	7	. /etc/sysconfig/rc
	8	. ${rc_functions}
	9
36792be6 MT	10	# Cache any local zones for 60 seconds
	11	LOCAL_TTL=60
	12
ee90aa98 MT	13	# Load configuration
ee90aa98 MT	14	eval $(/usr/local/bin/readhash /var/ipfire/dns/settings)
4b26aac6	15	eval $(/usr/local/bin/readhash /var/ipfire/ethernet/settings)
d0e5f71f	16
f75c279b AF	17	ip_address_revptr() {
	18	local addr=${1}
	19
	20	local a1 a2 a3 a4
	21	IFS=. read -r a1 a2 a3 a4 <<< ${addr}
	22
	23	echo "${a4}.${a3}.${a2}.${a1}.in-addr.arpa"
	24	}
	25
b8f5eda8	26	read_name_servers() {
2654c669 MT	27	# Read name servers from ISP
	28	if [ "${USE_ISP_NAMESERVERS}" = "on" -a "${PROTO}" != "TLS" ]; then
	29	local i
	30	for i in 1 2; do
	31	echo "$(</var/run/dns${i})"
	32	done 2>/dev/null
	33	fi
	34
	35	# Read configured name servers
	36	local id address tls_hostname enabled remark
	37	while IFS="," read -r id address tls_hostname enabled remark; do
	38	[ "${enabled}" != "enabled" ] && continue
	39
	40	if [ "${PROTO}" = "TLS" ]; then
	41	if [ -n "${tls_hostname}" ]; then
	42	echo "${address}@853#${tls_hostname}"
	43	fi
	44	else
	45	echo "${address}"
	46	fi
	47	done < /var/ipfire/dns/servers
b8f5eda8 MT	48	}
	49
	50	config_header() {
	51	echo "# This file is automatically generated and any changes"
	52	echo "# will be overwritten. DO NOT EDIT!"
	53	echo
	54	}
	55
6137797c MT	56	write_hosts_conf() {
	57	(
	58	config_header
f75c279b	59
6137797c MT	60	# Make own hostname resolveable
	61	# 1.1.1.1 is reserved for unused green, skip this
	62	if [ -n "${GREEN_ADDRESS}" -a "${GREEN_ADDRESS}" != "1.1.1.1" ]; then
	63	echo "local-data: \"${HOSTNAME} ${LOCAL_TTL} IN A ${GREEN_ADDRESS}\""
	64	fi
f59bc0c5	65
6137797c MT	66	local address
	67	for address in ${GREEN_ADDRESS} ${BLUE_ADDRESS} ${ORANGE_ADDRESS}; do
	68	[ -n "${address}" ] \|\| continue
	69	[ "${address}" = "1.1.1.1" ] && continue
36792be6	70
6137797c MT	71	address=$(ip_address_revptr ${address})
	72	echo "local-data: \"${address} ${LOCAL_TTL} IN PTR ${HOSTNAME}\""
	73	done
36792be6	74
6137797c	75	local enabled address hostname domainname generateptr
1b6b8d97 MT	76
	77	# Find all unique domain names
	78	while IFS="," read -r enabled address hostname domainname generateptr; do
	79	[ "${enabled}" = "on" ] \|\| continue
	80
	81	echo "${domainname}"
	82	done < /var/ipfire/main/hosts \| sort -u \| while read -r domainname; do
	83	echo "local-zone: ${domainname} typetransparent"
	84	done
	85
	86	# Add all hosts
6137797c MT	87	while IFS="," read -r enabled address hostname domainname generateptr; do
6137797c MT	88	[ "${enabled}" = "on" ] \|\| continue
36792be6	89
6137797c MT	90	# Build FQDN
	91	local fqdn="${hostname}.${domainname}"
	92	echo "local-data: \"${fqdn} ${LOCAL_TTL} IN A ${address}\""
f75c279b	93
6137797c MT	94	# Skip reverse resolution if the address equals the GREEN address
6137797c MT	95	[ "${address}" = "${GREEN_ADDRESS}" ] && continue
868d2a1f	96
6137797c MT	97	# Skip reverse resolution if user requested not to do so
6137797c MT	98	[ "${generateptr}" = "off" ] && continue
6874a576	99
6137797c MT	100	# Add RDNS
	101	address=$(ip_address_revptr ${address})
	102	echo "local-data: \"${address} ${LOCAL_TTL} IN PTR ${fqdn}\""
	103	done < /var/ipfire/main/hosts
	104	) > /etc/unbound/hosts.conf
36792be6 MT	105	}
36792be6 MT	106
b8f5eda8 MT	107	write_forward_conf() {
	108	(
	109	config_header
	110
beebf925 MT	111	# Enable strict QNAME minimisation
	112	if [ "${QNAME_MIN}" = "strict" ]; then
	113	echo "server:"
	114	echo " qname-minimisation-strict: yes"
	115	echo
	116	fi
	117
974d8653	118	# Force using TCP for upstream servers only
ee90aa98	119	if [ "${PROTO}" = "TCP" ]; then
974d8653 MT	120	echo "# Force using TCP for upstream servers only"
	121	echo "server:"
	122	echo " tcp-upstream: yes"
	123	echo
	124	fi
	125
ee90aa98	126	local insecure_zones=""
a6dcc5bb	127
1ececb67 MT	128	local enabled zone server servers remark disable_dnssec rest
1ececb67 MT	129	while IFS="," read -r enabled zone servers remark disable_dnssec rest; do
b8f5eda8 MT	130	# Line must be enabled.
	131	[ "${enabled}" = "on" ] \|\| continue
	132
a6dcc5bb MT	133	# Zones that end with .local are commonly used for internal
	134	# zones and therefore not signed
	135	case "${zone}" in
	136	*.local)
	137	insecure_zones="${insecure_zones} ${zone}"
	138	;;
1ececb67 MT	139	*)
	140	if [ "${disable_dnssec}" = "on" ]; then
	141	insecure_zones="${insecure_zones} ${zone}"
	142	fi
	143	;;
a6dcc5bb MT	144	esac
a6dcc5bb MT	145
15cf79e3 MT	146	echo "stub-zone:"
	147	echo " name: ${zone}"
	148	for server in ${servers//\|/ }; do
	149	if [[ ${server} =~ ^[0-9]+\.[0-9]+\.[0-9]+\.[0-9]+$ ]]; then
	150	echo " stub-addr: ${server}"
	151	else
	152	echo " stub-host: ${server}"
	153	fi
	154	done
	155	echo
	156
	157	# Make all reverse lookup zones transparent
c7e41255 MT	158	case "${zone}" in
c7e41255 MT	159	*.in-addr.arpa)
c7e41255	160	echo "server:"
9f099932	161	echo " local-zone: \"${zone}\" transparent"
c7e41255 MT	162	echo
c7e41255 MT	163	;;
c7e41255	164	esac
b8f5eda8	165	done < /var/ipfire/dnsforward/config
a6dcc5bb MT	166
	167	if [ -n "${insecure_zones}" ]; then
	168	echo "server:"
	169
	170	for zone in ${insecure_zones}; do
	171	echo " domain-insecure: ${zone}"
	172	done
	173	fi
50005ad1	174
ab4ef40f SS	175	# Read name servers.
ab4ef40f SS	176	nameservers=$(read_name_servers)
50005ad1	177
ab4ef40f SS	178	# Only write forward zones if any nameservers are configured.
	179	#
	180	# Otherwise fall-back into recursor mode.
	181	if [ -n "${nameservers}" ]; then
	182
	183	echo "forward-zone:"
	184	echo " name: \".\""
	185
	186	# Force using TLS only
	187	if [ "${PROTO}" = "TLS" ]; then
	188	echo " forward-tls-upstream: yes"
	189	fi
	190
	191	# Add upstream name servers
	192	local ns
	193	for ns in ${nameservers}; do
	194	echo " forward-addr: ${ns}"
	195	done
50005ad1 MT	196	fi
50005ad1 MT	197
b8f5eda8 MT	198	) > /etc/unbound/forward.conf
	199	}
	200
b658a451 MT	201	write_tuning_conf() {
	202	# https://www.unbound.net/documentation/howto_optimise.html
	203
b658a451 MT	204	# Determine amount of system memory
	205	local mem=$(get_memory_amount)
	206
	207	# In the worst case scenario, unbound can use double the
	208	# amount of memory allocated to a cache due to malloc overhead
	209
4a0d69ca MT	210	# Even larger systems with more than 8GB of RAM
	211	if [ ${mem} -ge 8192 ]; then
	212	mem=1024
	213
	214	# Extra large systems with more than 4GB of RAM
	215	elif [ ${mem} -ge 4096 ]; then
	216	mem=512
	217
b658a451	218	# Large systems with more than 2GB of RAM
4a0d69ca	219	elif [ ${mem} -ge 2048 ]; then
128db1a3	220	mem=256
b658a451	221
4a0d69ca MT	222	# Medium systems with more than 1GB of RAM
	223	elif [ ${mem} -ge 1024 ]; then
	224	mem=128
	225
b658a451 MT	226	# Small systems with less than 256MB of RAM
b658a451 MT	227	elif [ ${mem} -le 256 ]; then
128db1a3	228	mem=16
b658a451 MT	229
	230	# Everything else
	231	else
128db1a3	232	mem=64
b658a451 MT	233	fi
	234
	235	(
	236	config_header
	237
b658a451 MT	238	# Slice up the cache
	239	echo "rrset-cache-size: $(( ${mem} / 2 ))m"
	240	echo "msg-cache-size: $(( ${mem} / 4 ))m"
	241	echo "key-cache-size: $(( ${mem} / 4 ))m"
0a7dca2c MT	242
	243	# Increase parallel queries
	244	echo "outgoing-range: 8192"
	245	echo "num-queries-per-thread: 4096"
c20b2009 MT	246
	247	# Use larger send/receive buffers
	248	echo "so-sndbuf: 4m"
	249	echo "so-rcvbuf: 4m"
b658a451 MT	250	) > /etc/unbound/tuning.conf
	251	}
	252
	253	get_memory_amount() {
	254	local key val unit
	255
	256	while read -r key val unit; do
	257	case "${key}" in
	258	MemTotal:*)
	259	# Convert to MB
	260	echo "$(( ${val} / 1024 ))"
	261	break
	262	;;
	263	esac
	264	done < /proc/meminfo
	265	}
b8f5eda8	266
a33489a7 MT	267	fix_time_if_dns_fails() {
	268	# If DNS is working, everything is fine
	269	if resolve "ping.ipfire.org" &>/dev/null; then
	270	return 0
68fac98a	271	fi
a33489a7 MT	272
	273	# Try to sync time with a known time server
	274	boot_mesg "DNS not functioning... Trying to sync time with ntp.ipfire.org (81.3.27.46)..."
	275	loadproc /usr/local/bin/settime 81.3.27.46
68fac98a AF	276	}
68fac98a AF	277
043e7aa5 MT	278	resolve() {
043e7aa5 MT	279	local hostname="${1}"
f5fe5f47	280	local found=1
043e7aa5	281
54898bc6 MT	282	local answer
	283	for answer in $(dig +short A "${hostname}"); do
	284	# Filter out non-IP addresses
	285	if [[ ! "${answer}" =~ \.$ ]]; then
f5fe5f47	286	found=0
54898bc6 MT	287	echo "${answer}"
54898bc6 MT	288	fi
043e7aa5	289	done
f5fe5f47 AF	290
f5fe5f47 AF	291	return ${found}
043e7aa5 MT	292	}
043e7aa5 MT	293
661ab153	294	# Sets up Safe Search for various search engines
d7190078	295	update_safe_search() {
661ab153 MT	296	local google_tlds=(
	297	google.ad
	298	google.ae
	299	google.al
	300	google.am
	301	google.as
	302	google.at
	303	google.az
	304	google.ba
	305	google.be
	306	google.bf
	307	google.bg
	308	google.bi
	309	google.bj
	310	google.bs
	311	google.bt
	312	google.by
	313	google.ca
	314	google.cat
	315	google.cd
	316	google.cf
	317	google.cg
	318	google.ch
	319	google.ci
	320	google.cl
	321	google.cm
	322	google.cn
	323	google.co.ao
	324	google.co.bw
	325	google.co.ck
	326	google.co.cr
	327	google.co.id
	328	google.co.il
	329	google.co.in
	330	google.co.jp
	331	google.co.ke
	332	google.co.kr
	333	google.co.ls
	334	google.com
	335	google.co.ma
	336	google.com.af
	337	google.com.ag
	338	google.com.ai
	339	google.com.ar
	340	google.com.au
	341	google.com.bd
	342	google.com.bh
	343	google.com.bn
	344	google.com.bo
	345	google.com.br
	346	google.com.bz
	347	google.com.co
	348	google.com.cu
	349	google.com.cy
	350	google.com.do
	351	google.com.ec
	352	google.com.eg
	353	google.com.et
	354	google.com.fj
	355	google.com.gh
	356	google.com.gi
	357	google.com.gt
	358	google.com.hk
	359	google.com.jm
360	google.com.kh
361	google.com.kw
362	google.com.lb
363	google.com.ly
364	google.com.mm
365	google.com.mt
366	google.com.mx
367	google.com.my
368	google.com.na
369	google.com.nf
370	google.com.ng
371	google.com.ni
372	google.com.np
373	google.com.om
374	google.com.pa
375	google.com.pe
376	google.com.pg
377	google.com.ph
378	google.com.pk
379	google.com.pr
380	google.com.py
381	google.com.qa
382	google.com.sa
383	google.com.sb
384	google.com.sg
385	google.com.sl
386	google.com.sv
387	google.com.tj
388	google.com.tr
389	google.com.tw
390	google.com.ua
391	google.com.uy
392	google.com.vc
393	google.com.vn
394	google.co.mz
395	google.co.nz
396	google.co.th
397	google.co.tz
398	google.co.ug
399	google.co.uk
400	google.co.uz
401	google.co.ve
402	google.co.vi
403	google.co.za
404	google.co.zm
405	google.co.zw
406	google.cv
407	google.cz
408	google.de
409	google.dj
410	google.dk
411	google.dm
412	google.dz
413	google.ee
414	google.es
415	google.fi
416	google.fm
417	google.fr
418	google.ga
419	google.ge
420	google.gg
421	google.gl
422	google.gm
423	google.gp
424	google.gr
425	google.gy
426	google.hn
427	google.hr
428	google.ht
429	google.hu
430	google.ie
431	google.im
432	google.iq
433	google.is
434	google.it
435	google.je
436	google.jo
437	google.kg
438	google.ki
439	google.kz
440	google.la
441	google.li
442	google.lk
443	google.lt
444	google.lu
445	google.lv
446	google.md
447	google.me
448	google.mg
449	google.mk
450	google.ml
451	google.mn
452	google.ms
453	google.mu
454	google.mv
455	google.mw
456	google.ne
457	google.nl
458	google.no
459	google.nr
460	google.nu
461	google.pl
462	google.pn
463	google.ps
464	google.pt
465	google.ro
466	google.rs
467	google.ru
468	google.rw
469	google.sc
470	google.se
471	google.sh
472	google.si
473	google.sk
474	google.sm
475	google.sn
476	google.so
477	google.sr
478	google.st
479	google.td
480	google.tg
481	google.tk
482	google.tl
483	google.tm
484	google.tn
485	google.to
486	google.tt
487	google.vg
488	google.vu
489	google.ws
490	)
491
d7190078 MT	492	# Cleanup previous settings
	493	unbound-control local_zone_remove "bing.com" >/dev/null
	494	unbound-control local_zone_remove "duckduckgo.com" >/dev/null
	495	unbound-control local_zone_remove "yandex.com" >/dev/null
	496	unbound-control local_zone_remove "yandex.ru" >/dev/null
	497	unbound-control local_zone_remove "youtube.com" >/dev/null
661ab153	498
d7190078 MT	499	local domain
	500	for domain in ${google_tlds[@]}; do
	501	unbound-control local_zone_remove "${domain}"
	502	done >/dev/null
661ab153	503
d7190078 MT	504	# Nothing to do if safe search is not enabled
	505	if [ "${ENABLE_SAFE_SEARCH}" != "on" ]; then
	506	return 0
	507	fi
661ab153	508
d7190078 MT	509	# Bing
	510	unbound-control bing.com transparent >/dev/null
	511	for address in $(resolve "strict.bing.com"); do
	512	unbound-control local_data "www.bing.com ${LOCAL_TTL} IN A ${address}"
	513	done >/dev/null
	514
	515	# DuckDuckGo
	516	unbound-control local_zone duckduckgo.com typetransparent >/dev/null
	517	for address in $(resolve "safe.duckduckgo.com"); do
	518	unbound-control local_data "duckduckgo.com ${LOCAL_TTL} IN A ${address}"
	519	done >/dev/null
	520
	521	# Google
	522	local addresses="$(resolve "forcesafesearch.google.com")"
	523	for domain in ${google_tlds[@]}; do
	524	unbound-control local_zone "${domain}" transparent >/dev/null
	525	for address in ${addresses}; do
47864e8f	526	unbound-control local_data "www.${domain} ${LOCAL_TTL} IN A ${address}"
d7190078 MT	527	done >/dev/null
d7190078 MT	528	done
661ab153	529
d7190078 MT	530	# Yandex
	531	for domain in yandex.com yandex.ru; do
	532	unbound-control local_zone "${domain}" typetransparent >/dev/null
	533	for address in $(resolve "familysearch.${domain}"); do
	534	unbound-control local_data "${domain} ${LOCAL_TTL} IN A ${address}"
	535	done >/dev/null
	536	done
661ab153	537
d7190078 MT	538	# YouTube
	539	unbound-control local_zone youtube.com transparent >/dev/null
	540	for address in $(resolve "restrictmoderate.youtube.com"); do
	541	unbound-control local_data "www.youtube.com ${LOCAL_TTL} IN A ${address}"
	542	done >/dev/null
f617fd91	543
d7190078	544	return 0
661ab153 MT	545	}
661ab153 MT	546
d0e5f71f ML	547	case "$1" in
d0e5f71f ML	548	start)
80bc6022 MT	549	# Print a nicer messagen when unbound is already running
	550	if pidofproc -s unbound; then
	551	statusproc /usr/sbin/unbound
	552	exit 0
	553	fi
	554
b8f5eda8	555	# Update configuration files
b658a451	556	write_tuning_conf
6137797c	557	write_hosts_conf
b8f5eda8 MT	558	write_forward_conf
	559
	560	boot_mesg "Starting Unbound DNS Proxy..."
	561	loadproc /usr/sbin/unbound \|\| exit $?
	562
d7190078 MT	563	# Install Safe Search rules when the system is already online
	564	if [ -e "/var/ipfire/red/active" ]; then
	565	update_safe_search
	566	fi
b8f5eda8	567	;;
d0e5f71f ML	568
d0e5f71f ML	569	stop)
b8f5eda8 MT	570	boot_mesg "Stopping Unbound DNS Proxy..."
	571	killproc /usr/sbin/unbound
	572	;;
d0e5f71f ML	573
d0e5f71f ML	574	restart)
b8f5eda8 MT	575	$0 stop
	576	sleep 1
	577	$0 start
	578	;;
3b5131c1	579	reload\|update-forwarders)
0c109477	580	# Update configuration files
0c109477	581	write_forward_conf
6137797c	582	write_hosts_conf
0c109477	583
60557503 AF	584	# Call unbound-control and perform the reload
	585	/usr/sbin/unbound-control -q reload
	586
d98bbcc8 AF	587	# Dummy Resolve to wait for unbound
	588	resolve "ping.ipfire.org" &>/dev/null
	589
	590	if [ "$1" = "update-forwarders" ]; then
	591	# Make sure DNS works at this point
	592	fix_time_if_dns_fails
	593	fi
	594
0c109477 SS	595	# Update Safe Search rules if the system is online.
	596	if [ -e "/var/ipfire/red/active" ]; then
	597	update_safe_search
	598	fi
0c109477	599	;;
d0e5f71f ML	600
d0e5f71f ML	601	status)
b8f5eda8	602	statusproc /usr/sbin/unbound
b8f5eda8 MT	603	;;
b8f5eda8 MT	604
043e7aa5	605	resolve)
f5fe5f47	606	resolve "${2}" \|\| exit $?
043e7aa5 MT	607	;;
043e7aa5 MT	608
d0e5f71f	609	*)
3b5131c1	610	echo "Usage: $0 {start\|stop\|restart\|reload\|status\|resolve\|update-forwarders}"
b8f5eda8 MT	611	exit 1
b8f5eda8 MT	612	;;
d0e5f71f ML	613	esac
	614
	615	# End $rc_base/init.d/unbound