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@piperspace, @taius ... Thank you both.
Background: I was unfortunately not able to use the webserver/port 80 method, as I need to forward the port to an internal webserver, on which I can't/won't use the FTP method. Also, the Dyn.com built-in provider does not work with a Standard DNS account at Dyn.com, which meant using the nsupdate method was the only one left available to me. Without this helpful post, I would have given up in despair!
Because I prefer to have my setup configurable through the webGUI, I decided to attack the dns_nsupdate.sh file to allow configuration through the existing webGUI fields. For this I have explicitly checked for "update.dyndns.com" as the target, and therefore used the "KEY" textarea to provide the necessary ZONE and KEY lines required.
First, replace the dns_nsupdate.sh file with the one attached.
Then configure your domains in the webGUI as usual, with the server specified as "update.dyndns.com", and the Key as:
zone example.com
key [Key Name] [Key HMAC]
This way you can use multiple domains/keys/etc. all from the webGUI.
The changes/additions I made to the file are as follows:
_info "adding ${fulldomain}. 60 in txt \"${txtvalue}\""
if [ "${THISNSUPDATE_SERVER}"="update.dyndns.com" ]; then
THISNSUPDATE_DATA=`awk -F '"' 'BEGIN{RS=";"}NR>1{print $2}' "${THISNSUPDATE_KEY}"`
nsupdate <<EOF
${THISNSUPDATE_DATA}
server ${THISNSUPDATE_SERVER} ${NSUPDATE_SERVER_PORT}
update add ${fulldomain}. 60 in txt "${txtvalue}"
send
quit
EOF
else
nsupdate -k "${THISNSUPDATE_KEY}" <<EOF
server ${THISNSUPDATE_SERVER} ${NSUPDATE_SERVER_PORT}
update add ${fulldomain}. 60 in txt "${txtvalue}"
send
EOF
fi
and
_info "removing ${fulldomain}. txt"
if [ "${THISNSUPDATE_SERVER}"="update.dyndns.com" ]; then
THISNSUPDATE_DATA=`awk -F '"' 'BEGIN{RS=";"}NR>1{print $2}' "${THISNSUPDATE_KEY}"`
nsupdate <<EOF
${THISNSUPDATE_DATA}
server ${THISNSUPDATE_SERVER} ${NSUPDATE_SERVER_PORT}
update delete ${fulldomain}. txt
send
quit
EOF
else
nsupdate -k "${THISNSUPDATE_KEY}" <<EOF
server ${THISNSUPDATE_SERVER} ${NSUPDATE_SERVER_PORT}
update delete ${fulldomain}. txt
send
EOF
fi
Other than the "cryptic" awk command to extract the text out of the generated key file - everything else is very self explanatory.
Thanks again ... very helpful, and very timely info!
Cheers.
0_1539932589907_dns_nsupdate.sh.txt
