net/ntpd/files/ntpd.init

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2006-2011 OpenWrt.org
   3
   4 START=65
   5 STOP=65
   6
   7 USE_PROCD=1
   8 PROG=/sbin/ntpd
   9 HOTPLUG_HELPER=/usr/sbin/ntpd.hotplug-helper
  10
  11 config_file=/var/run/ntpd.conf
  12
  13 trunc() {
  14         echo -n "" > $config_file
  15 }
  16
  17 emit() {
  18         echo -e "$@" >> $config_file
  19 }
  20
  21 validate_ntp_section() {
  22         uci_validate_section system timeserver "${1}" \
  23                 'server:list(host)' 'enabled:bool:1' 'enable_server:bool:0' \
  24                 'interface:list(string)'
  25 }
  26
  27 start_service() {
  28         local server enabled enable_server interface intf
  29
  30         validate_ntp_section ntp || {
  31                 echo "validation failed"
  32                 return 1
  33         }
  34
  35         [ "$enabled" = 0 ] && return
  36
  37         [ -z "$server" -a "$enable_server" = 0 ] && return
  38
  39         # not sure that the interfaces enumerated should be validated,
  40         # since some of them might be dynamic interfaces (like IPsec
  41         # tunnels) which aren't known by ubus.
  42
  43         trunc
  44         emit "driftfile /var/lib/ntp/ntp.drift\n"
  45
  46         if [ "$enable_server" != 0 ]; then
  47                 emit "restrict default limited kod nomodify notrap nopeer"
  48                 emit "restrict -6 default limited kod nomodify notrap nopeer"
  49         else
  50                 emit "restrict -4 default noserve"
  51                 emit "restrict -6 default noserve"
  52         fi
  53         emit "restrict source noquery"
  54
  55         emit "\n# No limits for local monitoring"
  56         emit "restrict 127.0.0.1"
  57         emit "restrict -6 ::1\n"
  58
  59         if [ -n "$interface" ]; then
  60                 local loopback=$(ubus call network.interface dump | jsonfilter -e "@.interface[@.interface='loopback']['device']")
  61
  62                 local saw_lo=
  63                 for intf in $interface; do
  64                         emit "interface listen $intf"
  65                         [ "$intf" = "$loopback" ] && saw_lo=1
  66                 done
  67                 [ -z "$saw_lo" ] && emit "interface listen $loopback"
  68                 emit ""
  69         fi
  70
  71         emit "server $server iburst"
  72
  73         mkdir -p /var/lib/ntp
  74         chown -R ntp:ntp /var/lib/ntp
  75
  76         procd_open_instance
  77         procd_set_param command $PROG -g -u ntp:ntp -p /var/run/ntpd.pid -n \
  78                 -c $config_file
  79         procd_close_instance
  80
  81         procd_open_instance
  82         procd_set_param command $HOTPLUG_HELPER
  83         procd_close_instance
  84 }