Initial Commit

Dockerfile

+FROM alpine
+
+RUN apk add --no-cache jq curl bind-tools
+
+COPY --chown=root:root . ./
+
+ENV CF_API=https://api.cloudflare.com/client/v4
+
+CMD sh ./cloudflare.sh
\ No newline at end of file

cloudflare.sh

+#!/usr/bin/with-contenv sh
+
+cloudflare() {
+  curl -sSL \
+     -H "Accept: application/json" \
+     -H "Authorization: Bearer $API_KEY" \
+     -H "Content-Type:application/json" \
+     "$@"
+}
+
+verifyToken() {
+  cloudflare -o /dev/null "$CF_API"/user/tokens/verify
+}
+
+getZoneId() {
+  Result=$(cloudflare "$CF_API/zones?name=$ZONE")
+  echo $Result | jq -rc '.result[0].id'
+}
+
+getDnsRecordName() {
+  if [ ! -z "$SUBDOMAIN" ]; then
+    echo $SUBDOMAIN.$ZONE
+  else
+    echo $ZONE
+  fi
+}
+
+getDnsRecordId() {
+  cloudflare "$CF_API/zones/$1/dns_records?type=$RRTYPE&name=$2" | jq -r '.result[0].id'
+}
+
+createDnsRecord() {
+  cloudflare -X POST -d "{\"type\": \"$RRTYPE\",\"name\":\"$2\",\"content\":\"$3\",\"proxied\":true,\"ttl\":1 }" "$CF_API/zones/$1/dns_records" | jq -r '.result.id'
+}
+
+updateDnsRecord() {
+  cloudflare -X PATCH -d "{\"type\": \"$RRTYPE\",\"name\":\"$3\",\"content\":\"$4\",\"proxied\":true,\"ttl\":1 }" "$CF_API/zones/$1/dns_records/$2" | jq -r '.result.id'
+}
+
+echo "Verifying token..."
+verifyToken
+echo "Token verified!"
+
+echo "Retreiving Zone ID..."
+CFZoneId=$(getZoneId)
+echo "Zone ID found: $CFZoneId"
+
+echo "Finding DNS record..."
+CFDnsRecordName=$(getDnsRecordName)
+CFDnsRecordId=$(getDnsRecordId $CFZoneId $CFDnsRecordName)
+
+echo $CFDnsRecordId
+
+if [ "$CFDnsRecordId" != "null" ]; then
+  echo "DNS Record found: $CFDnsRecordId, updating..."
+  CFDnsRecordId=$(updateDnsRecord $CFZoneId $CFDnsRecordId $CFDnsRecordName $IP_ADDRESS)
+  echo "Updated DNS Record: $CFDnsRecordId"
+else
+  echo "No DNS Record for $CFDnsRecordName, creating..."
+  CFDnsRecordId=$(createDnsRecord $CFZoneId $CFDnsRecordName $IP_ADDRESS)
+
+  echo $CFDnsRecordId
+  echo "Created DNS Record: $CFDnsRecordId"
+fi
+