package/base-files/files/etc/hotplug.d/iface/40-rdate

   1 IFACE_GLOBAL=$(uci_get "system.@rdate[0].interface")
   2 SERVERS=
   3 MAX=0
   4 SYNCED=
   5
   6 do_rdate()
   7 {
   8         local server="$1"
   9
  10         rdate -s "$server" >/dev/null 2>/dev/null && {
  11                 logger -t rdate "Synced with $server"
  12                 SYNCED="$server"
  13         } || {
  14                 logger -t rdate "Failed to sync with $server"
  15         }
  16 }
  17
  18 add_server()
  19 {
  20         local section="$1"
  21
  22         local server
  23         config_get server "$section" hostname
  24         [ -z "$server" ] && return
  25
  26         local iface
  27         config_get iface "$section" interface
  28         [ -z "$iface" ] && iface=$IFACE_GLOBAL
  29         [ -n "$iface" ] && {
  30                 [ "$iface" = "$INTERFACE" ] || return
  31         }
  32
  33         SERVERS="${SERVERS} $server"; : $((MAX++))
  34 }
  35
  36 sync_time()
  37 {
  38         local server
  39         server=$(uci_get_state "network.$INTERFACE.lease_timesrv")
  40         [ -n "$server" ] && do_rdate "$server"
  41         [ -n "$SYNCED" ] && return
  42
  43         config_load timeserver
  44         config_foreach add_server timeserver
  45
  46         local servers
  47         while [ $MAX -gt 0 ] && [ -z "$SYNCED" ]; do
  48                 unset servers; random=$(awk "BEGIN { srand(); print int(rand() * $MAX + 1); }")
  49                 for server in $SERVERS; do
  50                         [ $((--random)) -eq 0 ] && { do_rdate "$server"; continue; }
  51                         servers="${servers} $server"
  52                 done
  53                 SERVERS="${servers}"; : $((MAX--))
  54         done
  55
  56         [ -z "$SYNCED" ] && logger -t rdate "No usable time server for $INTERFACE found"
  57 }
  58
  59 case "${ACTION:-ifup}" in
  60         ifup)
  61                 sync_time
  62         ;;
  63 esac