feat: bind demo

Signed-off-by: Chris Gianelloni <[email protected]>

bind/named.conf.default-zones

@@ -0,0 +1,4 @@
+zone "." {
+    type master;
+    file "/var/lib/bind/root.zone";
+};

bind/named.conf.local

@@ -0,0 +1,10 @@
+zone "cardano" {
+    type master;
+    file "/var/lib/bind/cardano.zone";
+};
+
+// This is just for demo
+zone "treehouse.cardano" {
+    type master;
+    file "/var/lib/bind/treehouse.zone";
+};

bind/named.conf.options

@@ -0,0 +1,13 @@
+options {
+    directory "/var/cache/bind";
+
+    recursion yes;
+    listen-on { any; };
+    allow-query { any; };
+    allow-query-cache { none; };
+
+    // forwarders {
+    //     103.196.38.38;
+    //     103.196.38.39;
+    // };
+};

bind/named.root

@@ -0,0 +1,2 @@
+. 60 NS ns1.cardano.
+ns1.cardano. 60 A 172.17.0.1

bind/root.hints

@@ -0,0 +1,2 @@
+. 86400 IN NS ns1.cardano.
+ns1.cardano. 86400 IN A 172.17.0.1

bind/root.zone

@@ -0,0 +1,4 @@
+. 86400 IN SOA ns1.cardano. hostmaster.cardano. 1683227483 21600 3600 604800 60
+. 86400 IN NS ns1.cardano.
+cardano. 86400 IN NS ns1.cardano.
+ns1.cardano. 86400 IN A 172.17.0.1

bind/treehouse.zone

@@ -0,0 +1,8 @@
+$ORIGIN treehouse.cardano.
+$TTL 60
+@ IN SOA ns1.treehouse.cardano. hostmaster.treehouse.cardano. 1683773269 21600 3600 604800 60
+  IN NS ns1.treehouse.cardano.
+  IN NS ns2.treehouse.cardano.
+ns1 IN A 172.17.0.1
+ns2 IN A 172.17.0.1
+www IN CNAME www.google.com.

cardano.zone

@@ -1,7 +1,13 @@
 $ORIGIN cardano.
 $TTL 60
-@ IN SOA ns.cardano. hostmaster.cardano. (1683227483, 21600, 3600, 604800, 60)
+@ IN SOA ns1.cardano. hostmaster.cardano. 1683773269 21600 3600 604800 60
+  IN NS ns1.cardano.
+ns1.cardano. IN A 172.17.0.1
 treehouse IN NS ns1.treehouse.cardano.
+ns1.treehouse.cardano. IN A 172.17.0.1
 treehouse IN NS ns2.treehouse.cardano.
+ns2.treehouse.cardano. IN A 172.17.0.1
 test IN NS ns1.test.cardano.
+ns1.test.cardano. IN A 172.17.0.1
 test IN NS ns2.test.cardano.
+ns2.test.cardano. IN A 172.17.0.1

demo.sh

@@ -0,0 +1,52 @@
+#!/usr/bin/env bash
+
+echo Starting BIND server container
+docker run -d \
+	--name bind9-container \
+	-e TZ=UTC \
+	-p 30053:53 \
+	-v $(pwd -P)/bind/named.conf.options:/etc/bind/named.conf.options \
+	-v $(pwd -P)/bind/named.conf.default-zones:/etc/bind/named.conf.default-zones \
+	-v $(pwd -P)/bind/named.conf.local:/etc/bind/named.conf.local \
+	-v $(pwd -P)/bind/root.hints:/usr/share/dns/root.hints \
+	-v $(pwd -P)/bind/root.zone:/var/lib/bind/root.zone \
+	-v $(pwd -P)/cardano.zone:/var/lib/bind/cardano.zone \
+	-v $(pwd -P)/bind/treehouse.zone:/var/lib/bind/treehouse.zone \
+	ubuntu/bind9:9.18-22.04_beta
+
+sleep 1
+__dns=$(docker exec -ti bind9-container ip addr show eth0 | grep inet | awk '{print $2}' | cut -d/ -f1)
+
+echo Looking up . NS records
+dig @${__dns} . NS
+sleep 1
+
+echo
+echo
+
+echo Looking up . A records
+dig @${__dns} . A
+sleep 1
+
+echo
+echo
+
+echo Looking up ns1.cardano A records
+dig @${__dns} ns1.cardano A
+sleep 1
+
+echo
+echo
+
+echo Looking up ns1.treehouse.cardano A records
+dig @${__dns} ns1.treehouse.cardano A
+sleep 1
+
+echo
+echo
+
+echo Looking up www.treehouse.cardano CNAME record
+dig @${__dns} www.treehouse.cardano CNAME
+sleep 1
+
+docker rm -f bind9-container 2>&1 >/dev/null

dns.py

@@ -23,7 +23,9 @@ def main():
 
     print("$ORIGIN cardano.")
     print("$TTL 60")
-    print("@ IN SOA ns.cardano. hostmaster.cardano. ("+str(now)+", 21600, 3600, 604800, 60)")
+    print("@ IN SOA ns1.cardano. hostmaster.cardano. "+str(now)+" 21600 3600 604800 60")
+    print("  IN NS ns1.cardano.")
+    print("ns1.cardano. IN A 172.17.0.1")
 
     for tx in txs:
         name = bytes.fromhex(tx['datum']['json']['fields'][0]['bytes']).decode()
@@ -35,6 +37,7 @@ def main():
             cardano[name] = dict({"origin": origin})
             for ns in ns_list:
                 print(name + " IN NS " + bytes.fromhex(ns['bytes']).decode() + ".")
+                print(bytes.fromhex(ns['bytes']).decode() + ". IN A 172.17.0.1")
 
 if __name__ == '__main__':
     main()