diff --git a/src/system/on-dhcp-event.sh b/src/system/on-dhcp-event.sh index 03574bdc3..3534fe601 100755 --- a/src/system/on-dhcp-event.sh +++ b/src/system/on-dhcp-event.sh @@ -1,47 +1,58 @@ #!/bin/bash # This script came from ubnt.com forum user "bradd" in the following post # http://community.ubnt.com/t5/EdgeMAX/Automatic-DNS-resolution-of-DHCP-client-names/td-p/651311 # It has been modified by Ubiquiti to update the /etc/host file # instead of adding to the CLI. # Thanks to forum user "itsmarcos" for bug fix & improvements # Thanks to forum user "ruudboon" for multiple domain fix # Thanks to forum user "chibby85" for expire patch and static-mapping if [ $# -lt 1 ]; then echo Invalid args logger -s -t on-dhcp-event "Invalid args \"$@\"" exit 1 fi action=$1 -client_name=$LEASE4_HOSTNAME -client_ip=$LEASE4_ADDRESS -client_mac=$LEASE4_HWADDR hostsd_client="/usr/bin/vyos-hostsd-client" case "$action" in - lease4_renew|lease4_recover) # add mapping for new/recovered lease address - if [ -z "$client_name" ]; then - logger -s -t on-dhcp-event "Client name was empty, using MAC \"$client_mac\" instead" - client_name=$(echo "host-$client_mac" | tr : -) - fi - - $hostsd_client --add-hosts "$client_name,$client_ip" --tag "dhcp-server-$client_ip" --apply + lease4_renew|lease4_recover) exit 0 ;; lease4_release|lease4_expire|lease4_decline) # delete mapping for released/declined address + client_ip=$LEASE4_ADDRESS $hostsd_client --delete-hosts --tag "dhcp-server-$client_ip" --apply exit 0 ;; - leases4_committed) # nothing to do + leases4_committed) # process committed leases (added/renewed/recovered) + for ((i = 0; i < $LEASES4_SIZE; i++)); do + client_ip_var="LEASES4_AT${i}_ADDRESS" + client_mac_var="LEASES4_AT${i}_HWADDR" + client_name_var="LEASES4_AT${i}_HOSTNAME" + client_subnet_id_var="LEASES4_AT${i}_SUBNET_ID" + + client_ip=${!client_ip_var} + client_mac=${!client_mac_var} + client_name=${!client_name_var} + client_subnet_id=${!client_subnet_id_var} + + if [ -z "$client_name" ]; then + logger -s -t on-dhcp-event "Client name was empty, using MAC \"$client_mac\" instead" + client_name=$(echo "host-$client_mac" | tr : -) + fi + + $hostsd_client --add-hosts "$client_name,$client_ip" --tag "dhcp-server-$client_ip" --apply + done + exit 0 ;; *) logger -s -t on-dhcp-event "Invalid command \"$1\"" exit 1 ;; esac