libexec/rc/rc.d/local_unbound

   1 #!/bin/sh
   2 #
   3 # $FreeBSD$
   4 #
   5
   6 # PROVIDE: local_unbound
   7 # REQUIRE: FILESYSTEMS defaultroute netwait resolv
   8 # BEFORE: NETWORKING
   9 # KEYWORD: shutdown
  10
  11 . /etc/rc.subr
  12
  13 name="local_unbound"
  14 desc="Local caching forwarding resolver"
  15 rcvar="local_unbound_enable"
  16
  17 command="/usr/sbin/local-unbound"
  18 extra_commands="anchor configtest reload setup"
  19 start_precmd="local_unbound_prestart"
  20 start_postcmd="local_unbound_poststart"
  21 reload_precmd="local_unbound_configtest"
  22 anchor_cmd="local_unbound_anchor"
  23 configtest_cmd="local_unbound_configtest"
  24 setup_cmd="local_unbound_setup"
  25 pidfile="/var/run/${name}.pid"
  26
  27 load_rc_config $name
  28
  29 : ${local_unbound_workdir:=/var/unbound}
  30 : ${local_unbound_config:=${local_unbound_workdir}/unbound.conf}
  31 : ${local_unbound_flags:="-c ${local_unbound_config}"}
  32 : ${local_unbound_forwardconf:=${local_unbound_workdir}/forward.conf}
  33 : ${local_unbound_controlconf:=${local_unbound_workdir}/control.conf}
  34 : ${local_unbound_anchor:=${local_unbound_workdir}/root.key}
  35 : ${local_unbound_forwarders:=}
  36 : ${local_unbound_tls:=}
  37
  38 do_as_unbound()
  39 {
  40         echo "$@" | su -m unbound
  41 }
  42
  43 #
  44 # Retrieve or update the DNSSEC root anchor
  45 #
  46 local_unbound_anchor()
  47 {
  48         do_as_unbound ${command}-anchor -a ${local_unbound_anchor}
  49         # we can't trust the exit code - check if the file exists
  50         [ -f ${local_unbound_anchor} ]
  51 }
  52
  53 #
  54 # Check the unbound configuration file
  55 #
  56 local_unbound_configtest()
  57 {
  58         do_as_unbound ${command}-checkconf ${local_unbound_config}
  59 }
  60
  61 #
  62 # Create the unbound configuration file and update resolv.conf to
  63 # point to unbound.
  64 #
  65 local_unbound_setup()
  66 {
  67         local tls_flag
  68         if checkyesno local_unbound_tls ; then
  69                 tls_flag="-t"
  70         fi
  71         echo "Performing initial setup."
  72         ${command}-setup -n \
  73             -u unbound \
  74             -w ${local_unbound_workdir} \
  75             -c ${local_unbound_config} \
  76             -f ${local_unbound_forwardconf} \
  77             -o ${local_unbound_controlconf} \
  78             -a ${local_unbound_anchor} \
  79             ${tls_flag} \
  80             ${local_unbound_forwarders}
  81 }
  82
  83 #
  84 # Before starting, check that the configuration file and root anchor
  85 # exist.  If not, attempt to generate them.
  86 #
  87 local_unbound_prestart()
  88 {
  89         # Create configuration file
  90         if [ ! -f ${local_unbound_config} ] ; then
  91                 run_rc_command setup
  92         fi
  93
  94         # Retrieve DNSSEC root key
  95         if [ ! -s ${local_unbound_anchor} ] ; then
  96                 run_rc_command anchor
  97         fi
  98 }
  99
 100 #
 101 # After starting, wait for Unbound to report that it is ready to avoid
 102 # race conditions with services which require functioning DNS.
 103 #
 104 local_unbound_poststart()
 105 {
 106         local retry=5
 107
 108         echo -n "Waiting for nameserver to start..."
 109         until "${command}-control" -c "${local_unbound_config}" status | grep -q "is running" ; do
 110                 if [ $((retry -= 1)) -eq 0 ] ; then
 111                         echo " giving up"
 112                         return 1
 113                 fi
 114                 echo -n "."
 115                 sleep 1
 116         done
 117         echo " good"
 118 }
 119
 120 load_rc_config $name
 121 run_rc_command "$1"