Init

cfddns.py

@@ -0,0 +1,77 @@
+import requests
+import socket
+import sys
+import os
+
+CF_GLOBAL_KEY = os.environ.get("CF_GLOBAL_KEY")
+CF_EMAIL = os.environ.get("CF_EMAIL")
+
+auth = {"X-Auth-Email": CF_EMAIL, "X-Auth-Key": CF_GLOBAL_KEY, "Content-Type": "application/json"}
+
+
+def update_dns(domain, new_ip):
+    for i in list_zones():
+        if domain.endswith(i[1]):
+            zone = i[0]
+    if not zone:
+        print("ERROR DOMAIN NOT FOUND")
+
+    if create_domain(zone, domain, new_ip):
+        print(f"RECORD {domain} -> {new_ip} CREATED")
+        return
+
+    list_api = f"https://api.cloudflare.com/client/v4/zones/{zone}/dns_records?name="
+    edit_api = f"https://api.cloudflare.com/client/v4/zones/{zone}/dns_records"
+    dns_info = {"type": "A", "name": domain, "ttl": 3600, "proxied": False}
+
+    try:
+        old_ip = socket.gethostbyname(dns_info["name"])
+    except socket.gaierror:
+        old_ip = None
+
+    if old_ip == new_ip:
+        print(f"RECORD {dns_info['name']} = {old_ip} NOT CHANGED")
+    else:
+        dns_id = requests.get(f"{list_api}{domain}", headers=auth).json()["result"][0]["id"]
+        dns_info["content"] = new_ip
+        upd = requests.put(f"{edit_api}/{dns_id}", headers=auth, json=dns_info).json()
+        dn_name = upd["result"]["name"]
+        dn_type = upd["result"]["type"]
+        dn_content = upd["result"]["content"]
+        print(f"RECORD {dn_name} {dn_type} {dn_content} UPDATED")
+
+
+def list_zones():
+    api_url = "https://api.cloudflare.com/client/v4/zones"
+    resp = requests.get(api_url, headers=auth).json()
+    return [(z["id"], z["name"]) for z in resp["result"]]
+
+
+def list_domains(zid):
+    api_url = f"https://api.cloudflare.com/client/v4/zones/{zid}/dns_records"
+    resp = requests.get(api_url, headers=auth).json()
+    return resp["result"]
+
+
+def create_domain(zone, domain, ip=None):
+    existing = [i["name"] for i in list_domains(zone)]
+    if domain not in existing:
+        create_record(domain, zone, ip)
+        return True
+    else:
+        return False
+
+
+def create_record(sub, zid, ip="1.1.1.1", record="A"):
+    api_url = f"https://api.cloudflare.com/client/v4/zones/{zid}/dns_records"
+    data = {"content": ip, "name": sub, "proxied": False, "type": record, "comment": "", "ttl": 3600}
+    res_txt = requests.post(api_url, headers=auth, json=data).text
+    print(res_txt)
+    return res_txt
+
+
+if __name__ == "__main__":
+    TARGET_DOMAIN = sys.argv[1]
+    TARGET_ADDR = requests.get("https://ping.api.morgan.kr").json()["info"]["client"]
+    print(f"UPDATE {TARGET_DOMAIN} <- {TARGET_ADDR}")
+    update_dns(TARGET_DOMAIN, TARGET_ADDR)