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#!/usr/bin/env sh
# shellcheck disable=SC2034
dns_knot_info='Knot Server knsupdate
Site: www.knot-dns.cz/docs/2.5/html/man_knsupdate.html
Docs: github.com/acmesh-official/acme.sh/wiki/dnsapi#dns_knot
Options:
KNOT_SERVER Server hostname. Default: "localhost".
KNOT_KEY File path to TSIG key
'
# See also dns_nsupdate.sh
######## Public functions #####################
#Usage: dns_knot_add _acme-challenge.www.domain.com "XKrxpRBosdIKFzxW_CT3KLZNf6q0HG9i01zxXp5CPBs"
dns_knot_add() {
fulldomain=$1
txtvalue=$2
_checkKey || return 1
[ -n "${KNOT_SERVER}" ] || KNOT_SERVER="localhost"
# save the dns server and key to the account.conf file.
_saveaccountconf KNOT_SERVER "${KNOT_SERVER}"
_saveaccountconf KNOT_KEY "${KNOT_KEY}"
if ! _get_root "$fulldomain"; then
_err "Domain does not exist."
return 1
fi
_info "Adding ${fulldomain}. 60 TXT \"${txtvalue}\""
knsupdate <<EOF
server ${KNOT_SERVER}
key ${KNOT_KEY}
zone ${_domain}.
update add ${fulldomain}. 60 TXT "${txtvalue}"
send
quit
EOF
if [ $? -ne 0 ]; then
_err "Error updating domain."
return 1
fi
_info "Domain TXT record successfully added."
return 0
}
#Usage: dns_knot_rm _acme-challenge.www.domain.com
dns_knot_rm() {
fulldomain=$1
_checkKey || return 1
[ -n "${KNOT_SERVER}" ] || KNOT_SERVER="localhost"
if ! _get_root "$fulldomain"; then
_err "Domain does not exist."
return 1
fi
_info "Removing ${fulldomain}. TXT"
knsupdate <<EOF
server ${KNOT_SERVER}
key ${KNOT_KEY}
zone ${_domain}.
update del ${fulldomain}. TXT
send
quit
EOF
if [ $? -ne 0 ]; then
_err "error updating domain"
return 1
fi
_info "Domain TXT record successfully deleted."
return 0
}
#################### Private functions below ##################################
# _acme-challenge.www.domain.com
# returns
# _domain=domain.com
_get_root() {
domain=$1
i="$(echo "$fulldomain" | tr '.' ' ' | wc -w)"
i=$(_math "$i" - 1)
while true; do
h=$(printf "%s" "$domain" | cut -d . -f "$i"-100)
if [ -z "$h" ]; then
return 1
fi
_domain="$h"
return 0
done
_debug "$domain not found"
return 1
}
_checkKey() {
if [ -z "${KNOT_KEY}" ]; then
_err "You must specify a TSIG key to authenticate the request."
return 1
fi
}
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