contrib/dhcpcd/hooks/50-ypbind

   1 # Sample dhcpcd hook for ypbind
   2 # This script is only suitable for the BSD versions.
   3
   4 : ${ypbind_restart_cmd:=service_command ypbind restart}
   5 : ${ypbind_stop_cmd:=service_condcommand ypbind stop}
   6 ypbind_dir="$state_dir/ypbind"
   7 : ${ypdomain_dir:=}
   8 : ${ypdomain_suffix:=}
   9
  10 best_domain()
  11 {
  12         for i in "$ypbind_dir/$interface_order".*; do
  13                 if [ -f "$i" ]; then
  14                         cat "$i"
  15                         return 0
  16                 fi
  17         done
  18         return 1
  19 }
  20
  21 make_yp_binding()
  22 {
  23         [ -d "$ypbind_dir" ] || mkdir -p "$ypbind_dir"
  24         echo "$new_nis_domain" >"$ypbind_dir/$ifname"
  25
  26         if [ -z "$ypdomain_dir" ]; then
  27                 false
  28         else
  29                 cf="$ypdomain_dir/$new_nis_domain$ypdomain_suffix"
  30                 if [ -n "$new_nis_servers" ]; then
  31                         ncf="$cf.$ifname"
  32                         rm -f "$ncf"
  33                         for x in $new_nis_servers; do
  34                                 echo "$x" >>"$ncf"
  35                         done
  36                         change_file "$cf" "$ncf"
  37                 else
  38                         [ -e "$cf" ] && rm "$cf"
  39                 fi
  40         fi
  41
  42         nd="$(best_domain)"
  43         if [ $? = 0 ] && [ "$nd" != "$(domainname)" ]; then
  44                 domainname "$nd"
  45                 if [ -n "$ypbind_restart_cmd" ]; then
  46                         eval $ypbind_restart_cmd
  47                 fi
  48         fi
  49 }
  50
  51 restore_yp_binding()
  52 {
  53         rm -f "$ypbind_dir/$ifname"
  54         nd="$(best_domain)"
  55         # We need to stop ypbind if there is no best domain
  56         # otherwise it will just stall as we cannot set domainname
  57         # to blank :/
  58         if [ -z "$nd" ]; then
  59                 if [ -n "$ypbind_stop_cmd" ]; then
  60                         eval $ypbind_stop_cmd
  61                 fi
  62         elif [ "$nd" != "$(domainname)" ]; then
  63                 domainname "$nd"
  64                 if [ -n "$ypbind_restart_cmd" ]; then
  65                         eval $ypbind_restart_cmd
  66                 fi
  67         fi
  68 }
  69
  70 if ! $if_configured; then
  71         ;
  72 elif [ "$reason" = PREINIT ]; then
  73         rm -f "$ypbind_dir/$interface".*
  74 elif $if_up || $if_down; then
  75         if [ -n "$new_nis_domain" ]; then
  76                 if valid_domainname "$new_nis_domain"; then
  77                         make_yp_binding
  78                 else
  79                         syslog err "Invalid NIS domain name: $new_nis_domain"
  80                 fi
  81         elif [ -n "$old_nis_domain" ]; then
  82                 restore_yp_binding
  83         fi
  84 fi