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Add README.md and some scripts to get DHCPD hosts into unbound for DNS

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This commit is contained in:
Tony Blyler 2021-05-10 00:16:32 -04:00
parent 68a324be03
commit c3d133a75e
4 changed files with 141 additions and 0 deletions

28
cron/unbound-dhcpd-updater Executable file
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#!/bin/sh
set -eu
readonly DHCPD_CONF_FILE='/etc/dhcpd.conf'
readonly DHCPD_LEASES_FILE='/var/db/dhcpd.leases'
readonly UNBOUND_LOCAL_DATA_FILE='/var/unbound/etc/local-data-dhcpd.conf'
UNBOUND_LOCAL_DATA_FILE_TMP="$(mktemp)"
readonly UNBOUND_LOCAL_DATA_FILE_TMP
get_file_modify_time() {
stat -f %m "$1"
}
if [ -e "$UNBOUND_LOCAL_DATA_FILE" ]; then
UNBOUND_LOCAL_DATA_FILE_MODIFY_TIME="$(get_file_modify_time "$UNBOUND_LOCAL_DATA_FILE")"
if [ "$UNBOUND_LOCAL_DATA_FILE_MODIFY_TIME" -gt "$(get_file_modify_time "$DHCPD_CONF_FILE")" ]; then
if [ "$UNBOUND_LOCAL_DATA_FILE_MODIFY_TIME" -gt "$(get_file_modify_time "$DHCPD_LEASES_FILE")" ]; then
exit 0
fi
fi
fi
../dhcpd/list_active_assignments | ../unbound/local-data-file-generator > "$UNBOUND_LOCAL_DATA_FILE_TMP"
mv "$UNBOUND_LOCAL_DATA_FILE_TMP" "$UNBOUND_LOCAL_DATA_FILE"
rcctl reload unbound