1 files changed, 149 insertions, 0 deletions
diff --git a/extra/simple-dns-server.js b/extra/simple-dns-server.js
new file mode 100644
index 0000000..38bf74f
--- /dev/null
+++ b/extra/simple-dns-server.js
@@ -0,0 +1,149 @@
+/*
+ * Simple DNS Server
+ * For testing DNS monitoring type, dev only
+ */
+const dns2 = require("dns2");
+
+const { Packet } = dns2;
+
+const server = dns2.createServer({
+    udp: true
+});
+
+server.on("request", (request, send, rinfo) => {
+    for (let question of request.questions) {
+        console.log(question.name, type(question.type), question.class);
+
+        const response = Packet.createResponseFromRequest(request);
+
+        if (question.name === "existing.com") {
+
+            if (question.type === Packet.TYPE.A) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    address: "1.2.3.4"
+                });
+            } else if (question.type === Packet.TYPE.AAAA) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    address: "fe80::::1234:5678:abcd:ef00",
+                });
+            } else if (question.type === Packet.TYPE.CNAME) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    domain: "cname1.existing.com",
+                });
+            } else if (question.type === Packet.TYPE.MX) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    exchange: "mx1.existing.com",
+                    priority: 5
+                });
+            } else if (question.type === Packet.TYPE.NS) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    ns: "ns1.existing.com",
+                });
+            } else if (question.type === Packet.TYPE.SOA) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    primary: "existing.com",
+                    admin: "admin@existing.com",
+                    serial: 2021082701,
+                    refresh: 300,
+                    retry: 3,
+                    expiration: 10,
+                    minimum: 10,
+                });
+            } else if (question.type === Packet.TYPE.SRV) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    priority: 5,
+                    weight: 5,
+                    port: 8080,
+                    target: "srv1.existing.com",
+                });
+            } else if (question.type === Packet.TYPE.TXT) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    data: "#v=spf1 include:_spf.existing.com ~all",
+                });
+            } else if (question.type === Packet.TYPE.CAA) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    flags: 0,
+                    tag: "issue",
+                    value: "ca.existing.com",
+                });
+            }
+
+        }
+
+        if (question.name === "4.3.2.1.in-addr.arpa") {
+            if (question.type === Packet.TYPE.PTR) {
+                response.answers.push({
+                    name: question.name,
+                    type: question.type,
+                    class: question.class,
+                    ttl: 300,
+                    domain: "ptr1.existing.com",
+                });
+            }
+        }
+
+        send(response);
+    }
+});
+
+server.on("listening", () => {
+    console.log("Listening");
+    console.log(server.addresses());
+});
+
+server.on("close", () => {
+    console.log("server closed");
+});
+
+server.listen({
+    udp: 5300
+});
+
+/**
+ * Get human readable request type from request code
+ * @param {number} code Request code to translate
+ * @returns {string|void} Human readable request type
+ */
+function type(code) {
+    for (let name in Packet.TYPE) {
+        if (Packet.TYPE[name] === code) {
+            return name;
+        }
+    }
+}