Add env variable to specify propagation delay.

README.md

@@ -30,6 +30,7 @@ under the following locations respectively:
 
 - DUCKDNS_DOMAIN: The domain to update, ex: DUCKDNS_DOMAIN=redxef for redxef.duckdns.org
 - DUCKDNS_TOKEN: Your duckdns api token
+- DUCKDNS_PROPAGATION_DELAY: Wait this many seconds after the TXT record was updated
 - LE_EMAIL: Your email for certificate related notifications
 
 ## SOURCE

certbot-auth

@@ -3,15 +3,16 @@
 echo "certbot txt record: $CERTBOT_VALIDATION"
 
 baseurl='https://www.duckdns.org/update?domains=%s&token=%s&txt=%s'
-result="$(printf "url=$baseurl\n" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" "$CERTBOT_VALIDATION" | curl -K -)"
+result="$(printf 'url=%s\n' "$baseurl" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" "$CERTBOT_VALIDATION" | curl -K -)"
 
 # give some time for the record to update
 echo "waiting for txt record"
-for i in $(seq 0 60); do
+for _i in $(seq 0 60); do
     val="$(nslookup -type=TXT "$DUCKDNS_DOMAIN.duckdns.org" | grep "$DUCKDNS_DOMAIN.duckdns.org.*text.*=.*" | sed -n 's/.*"\([^"]*\)".*/\1/p')"
     echo "current txt record: $val"
     test "$val" = "$CERTBOT_VALIDATION" && break
     sleep 10
 done
+sleep "${DUCKDNS_PROPAGATION_DELAY:-0}"
 
 test "$result" = 'OK'

certbot-cleanup

@@ -1,4 +1,4 @@
 #!/usr/bin/env sh
 
 baseurl='https://www.duckdns.org/update?domains=%s&token=%s&txt=&clear=True'
-test "$(printf "url=$baseurl\n" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" | curl -K -)" = 'OK'
+test "$(printf "url=%s\n" "$baseurl" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" | curl -K -)" = 'OK'

duckdns

@@ -2,4 +2,4 @@
 
 logfile=/var/log/duckdns.log
 baseurl='https://www.duckdns.org/update?domains=%s&token=%s'
-printf "url=$baseurl\n" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" | curl -o "$logfile" -K -
+printf 'url=%s\n' "$baseurl" "$DUCKDNS_DOMAIN" "$DUCKDNS_TOKEN" | curl -o "$logfile" -K -