1 files changed, 40 insertions, 0 deletions
diff --git a/update.sh b/update.sh
new file mode 100755
index 0000000..9fba7be
--- /dev/null
+++ b/update.sh
@@ -0,0 +1,40 @@
+#!/usr/bin/env sh
+set -e 
+if [ $# -ne 2 ]; then
+    echo "Usage: ./update.sh DOMAIN API_CONFIG" >&2
+    exit 1
+fi
+
+DOMAIN=$1
+API_CONFIG=$2
+
+source $API_CONFIG
+config_ip=$(dig +short $DOMAIN)
+actual_ip=$(curl https://ipinfo.io/ip)
+
+if [ "$config_ip" != "$actual_ip" ]; then
+    echo "Updating IP from $config_id to $actual_ip for $DOMAIN"
+    res=$(curl -X POST  "https://porkbun.com/api/json/v3/dns/retrieve/$DOMAIN" \
+	       -d "{ \"secretapikey\": \"${SECRETAPIKEY}\", \"apikey\": \"${APIKEY}\" }")
+    status=$(echo "$res" | jq -r '.status')
+    if [ "$status" != "SUCCESS" ]; then
+	echo "Failed to fetch domain ID:\n\t$res" >&2
+	exit 1
+    fi
+    ID=$(echo "$res" | jq -r ".records[] | select(.type == \"A\") | select(.content == \"${config_ip}\") | .id")
+    res=$(curl -X POST "https://porkbun.com/api/json/v3/dns/edit/$DOMAIN/$ID" \
+	       -d "{ \"secretapikey\": \"${SECRETAPIKEY}\", \"apikey\": \"${APIKEY}\", \"content\": \"${actual_ip}\", \"ttl\": \"600\", \"type\": \"A\", \"name\": \"\" }")
+    status=$(echo "$res" | jq -r '.status')
+    if [ "$status" == "SUCCESS" ]; then
+	echo "Successfully updated $DOMAIN record $ID from $config_ip to $actual_ip"
+    else
+	echo "Failed to update DNS record for $DOMAIN with $ID from $config_ip to $actual_ip" >&2
+	pretty=$(echo "$res" | jq '.')
+	echo "$pretty" >&2
+	exit 1
+    fi
+else
+    echo "$DOMAIN is currently registered properly: $config_ip $actual_ip"
+fi
+
+exit 0