package/utils/busybox/files/sysntpd

   1 #!/bin/sh /etc/rc.common
   2 # Copyright (C) 2011 OpenWrt.org
   3
   4 START=98
   5
   6 USE_PROCD=1
   7 PROG=/usr/sbin/ntpd
   8 HOTPLUG_SCRIPT=/usr/sbin/ntpd-hotplug
   9
  10 get_dhcp_ntp_servers() {
  11         local interfaces="$1"
  12         local filter="*"
  13         local interface ntpservers ntpserver
  14
  15         for interface in $interfaces; do
  16                 [ "$filter" = "*" ] && filter="@.interface='$interface'" || filter="$filter,@.interface='$interface'"
  17         done
  18
  19         ntpservers=$(ubus call network.interface dump | jsonfilter -e "@.interface[$filter]['data']['ntpserver']")
  20
  21         for ntpserver in $ntpservers; do
  22                 local duplicate=0
  23                 local entry
  24                 for entry in $server; do
  25                         [ "$ntpserver" = "$entry" ] && duplicate=1
  26                 done
  27                 [ "$duplicate" = 0 ] && server="$server $ntpserver"
  28         done
  29 }
  30
  31 validate_ntp_section() {
  32         uci_load_validate system timeserver "$1" "$2" \
  33                 'server:list(host)' 'enabled:bool:1' 'enable_server:bool:0' 'use_dhcp:bool:1' 'dhcp_interface:list(string)'
  34 }
  35
  36 start_ntpd_instance() {
  37         local peer
  38
  39         [ "$2" = 0 ] || {
  40                 echo "validation failed"
  41                 return 1
  42         }
  43
  44         [ $enabled = 0 ] && return
  45
  46         [ $use_dhcp = 1 ] && get_dhcp_ntp_servers "$dhcp_interface"
  47
  48         [ -z "$server" -a "$enable_server" = "0" ] && return
  49
  50         procd_open_instance
  51         procd_set_param command "$PROG" -n -N
  52         [ "$enable_server" = "1" ] && procd_append_param command -l
  53         [ -x "$HOTPLUG_SCRIPT" ] && procd_append_param command -S "$HOTPLUG_SCRIPT"
  54         for peer in $server; do
  55                 procd_append_param command -p $peer
  56         done
  57         procd_set_param respawn
  58         [ -x /sbin/ujail ] && {
  59                 procd_add_jail ntpd
  60                 procd_set_param capabilities /etc/capabilities/ntpd.json
  61                 procd_set_param user ntp
  62                 procd_set_param group ntp
  63                 procd_set_param no_new_privs 1
  64         }
  65         procd_close_instance
  66 }
  67
  68 start_service() {
  69         validate_ntp_section ntp start_ntpd_instance
  70 }
  71
  72 service_triggers() {
  73         local script name use_dhcp
  74
  75         script=$(readlink -f "$initscript")
  76         name=$(basename ${script:-$initscript})
  77
  78         procd_add_config_trigger "config.change" "system" /etc/init.d/$name reload
  79
  80         config_load system
  81         config_get use_dhcp ntp use_dhcp 1
  82
  83         [ $use_dhcp = 1 ] && {
  84                 local dhcp_interface
  85                 config_get dhcp_interface ntp dhcp_interface
  86
  87                 if [ -n "$dhcp_interface" ]; then
  88                         for n in $dhcp_interface; do
  89                                 procd_add_interface_trigger "interface.*" $n /etc/init.d/$name reload
  90                         done
  91                 else
  92                         procd_add_raw_trigger "interface.*" 1000 /etc/init.d/$name reload
  93                 fi
  94         }
  95
  96         procd_add_validation validate_ntp_section
  97 }