README.md

@@ -14,7 +14,7 @@ Pick one of the options below using the following settings:
 
 * **DIGITALOCEAN_TOKEN:** The token you generate in DigitalOcean's API settings.
 * **DOMAIN:** The domain your subdomain is registered at. (i.e. `foo.com` for `home.foo.com`)
-* **NAME:** Subdomain to use. (name in A record) (i.e. `home` for `home.foo.com`). Multiple subdomains must be separated by semicolons `;`
+* **NAME:** Subdomain to use. (name in A record) (i.e. `home` for `home.foo.com`)
 * **SLEEP_INTERVAL:** Polling time in seconds. (default: 300)
 
 ### Docker (Recommended)

dyndns.sh

@@ -19,29 +19,25 @@ while ( true ); do
         -H "Content-Type: application/json" \
         -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
         $dns_list)
+    record_id=$(echo $domain_records| jq ".domain_records[] | select(.type == \"A\" and .name == \"$NAME\") | .id")
+    record_data=$(echo $domain_records| jq -r ".domain_records[] | select(.type == \"A\" and .name == \"$NAME\") | .data")
+    
+    test -z $record_id && die "No record found with given domain name!"
 
     ip="$(curl -s ipinfo.io/ip)"
+    data="{\"type\": \"A\", \"name\": \"$NAME\", \"data\": \"$ip\"}"
+    url="$dns_list/$record_id"
 
     if [[ -n $ip ]]; then
-        for sub in ${NAME//;/ }; do
-            record_id=$(echo $domain_records| jq ".domain_records[] | select(.type == \"A\" and .name == \"$sub\") | .id")
-            record_data=$(echo $domain_records| jq -r ".domain_records[] | select(.type == \"A\" and .name == \"$sub\") | .data")
-            
-            test -z $record_id && echo "No record found with '$sub' domain name!" && continue
+        if [[ "$ip" != "$record_data" ]]; then
+            echo "existing DNS record address ($record_data) doesn't match current IP ($ip), sending data=$data to url=$url"
 
-            if [[ "$ip" != "$record_data" ]]; then
-                data="{\"type\": \"A\", \"name\": \"$sub\", \"data\": \"$ip\"}"
-                url="$dns_list/$record_id"
-
-                echo "existing DNS record address ($record_data) doesn't match current IP ($ip), sending data=$data to url=$url"
-
-                curl -s -X PUT \
-                    -H "Content-Type: application/json" \
-                    -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
-                    -d "$data" \
-                    "$url" &> /dev/null
-            fi
-        done
+            curl -s -X PUT \
+                -H "Content-Type: application/json" \
+                -H "Authorization: Bearer $DIGITALOCEAN_TOKEN" \
+                -d "$data" \
+                "$url" &> /dev/null
+        fi
     else
         echo "IP wasn't retrieved within allowed interval. Will try $sleep_interval seconds later.."
     fi