🦮 Strip whitespace from subdomain

📚 Improved documentation

README.md

@@ -8,7 +8,11 @@ A small, 🕵️ privacy centric, and ⚡ lightning fast multi-architecture Dock
 
 ## 🇺🇸 Origin
 
-This script was written for the Raspberry Pi platform to enable low cost, simple self hosting to promote a more decentralized internet. On execution, the script fetches public IPv4 and IPv6 addresses and creates/updates DNS records for the subdomains in Cloudflare. Stale, duplicate DNS records are removed for housekeeping.
+This script was written for the Raspberry Pi platform to enable low cost self hosting that just works to promote a more decentralized internet.
+
+## 🧹 More than just DDNS
+
+`cloudflare-ddns` handles the busy work for you, so deploying your web apps is less of a clickfest. On execution, the script fetches public IPv4 and IPv6 addresses and creates/updates DNS records for the subdomains in Cloudflare. Stale, duplicate DNS records are removed for housekeeping.
 
 ## 📊 Stats
 
@@ -143,6 +147,26 @@ From the project root directory
 docker-compose up -d
 ```
 
+## 🐧 Deploy with Linux + Cron
+
+### 🏃 Running (all distros)
+
+This script requires Python 3.5+, which comes preinstalled on the latest version of Raspbian. Download/clone this repo and give permission to the project's bash script by running `chmod +x ./start-sync.sh`. Now you can execute `./start-sync.sh`, which will set up a virtualenv, pull in any dependencies, and fire the script.
+
+1. Upload the cloudflare-ddns folder to your home directory /home/your_username_here/
+
+2. Run the following code in terminal
+
+```bash
+crontab -e
+```
+
+3. Add the following lines to sync your DNS records every 15 minutes
+
+```bash
+*/15 * * * * /home/your_username_here/cloudflare-ddns/start-sync.sh
+```
+
 ## Building from source
 
 Create a config.json file with your production credentials.
@@ -189,26 +213,6 @@ Recommended for production
 docker run -d timothyjmiller/cloudflare_ddns:latest
 ```
 
-## 🐧 (legacy) Linux + cron instructions (all distros)
-
-### 🏃 Running
-
-This script requires Python 3.5+, which comes preinstalled on the latest version of Raspbian. Download/clone this repo and give permission to the project's bash script by running `chmod +x ./start-sync.sh`. Now you can execute `./start-sync.sh`, which will set up a virtualenv, pull in any dependencies, and fire the script.
-
-1. Upload the cloudflare-ddns folder to your home directory /home/your_username_here/
-
-2. Run the following code in terminal
-
-```bash
-crontab -e
-```
-
-3. Add the following lines to sync your DNS records every 15 minutes
-
-```bash
-*/15 * * * * /home/your_username_here/cloudflare-ddns/start-sync.sh
-```
-
 ## License
 
 This Template is licensed under the GNU General Public License, version 3 (GPLv3).

cloudflare-ddns.py

@@ -18,8 +18,7 @@ class GracefulExit:
     signal.signal(signal.SIGTERM, self.exit_gracefully)
 
   def exit_gracefully(self, signum, frame):
-    print("\nReceived {} signal".format(self.signals[signum]))
+    print("🛑 Stopping main thread...")
-    print("Cleaning up resources. End of the program")
     self.kill_now = True
 
 with open(PATH + "config.json") as config_file:
@@ -49,14 +48,14 @@ def getIPs():
         a.pop()
         a = dict(s.split("=") for s in a)["ip"]
     except Exception:
-        print("Warning: IPv4 not detected.")
+        print("⚠️ Warning: IPv4 not detected.")
         deleteEntries("A")
     try:
         aaaa = requests.get("https://[2606:4700:4700::1111]/cdn-cgi/trace").text.split("\n")
         aaaa.pop()
         aaaa = dict(s.split("=") for s in aaaa)["ip"]
     except Exception:
-        print("Warning: IPv6 not detected.")
+        print("⚠️ Warning: IPv6 not detected.")
         deleteEntries("AAAA")
     ips = []
     if(a is not None):
@@ -78,7 +77,7 @@ def commitRecord(ip):
         base_domain_name = response["result"]["name"]
         ttl = 300 # default Cloudflare TTL
         for subdomain in subdomains:
-            subdomain = subdomain.lower()
+            subdomain = subdomain.lower().strip()
             record = {
                 "type": ip["type"],
                 "name": subdomain,
@@ -108,16 +107,16 @@ def commitRecord(ip):
                             modified = True
             if identifier:
                 if modified:
-                    print("Updating record " + str(record))
+                    print("📡 Updating record " + str(record))
                     response = cf_api(
                         "zones/" + c['zone_id'] + "/dns_records/" + identifier, "PUT", c, {}, record)
             else:
-                print("Adding new record " + str(record))
+                print("➕ Adding new record " + str(record))
                 response = cf_api(
                     "zones/" + c['zone_id'] + "/dns_records", "POST", c, {}, record)
             for identifier in duplicate_ids:
                 identifier = str(identifier)
-                print("Deleting stale record " + identifier)
+                print("🗑️ Deleting stale record " + identifier)
                 response = cf_api(
                     "zones/" + c['zone_id'] + "/dns_records/" + identifier, "DELETE", c)
     return True
@@ -151,8 +150,8 @@ def updateIPs():
 if __name__ == '__main__':
     if(len(sys.argv) > 1):
         if(sys.argv[1] == "--repeat"):
-            delay = 5*60 # 5 minutes
+            delay = 5*60
-            print("Updating A & AAAA records every " + str(delay) + " seconds")
+            print("⏲️ Updating IPv4 (A) & IPv6 (AAAA) records every 5 minutes")
             next_time = time.time()
             killer = GracefulExit()
             while not killer.kill_now:
@@ -160,7 +159,7 @@ if __name__ == '__main__':
                 updateIPs()
                 next_time += (time.time() - next_time) // delay * delay + delay
         else:
-            print("Unrecognized parameter '" + sys.argv[1] + "'. Stopping now.")
+            print("😡 Unrecognized parameter '" + sys.argv[1] + "'. Stopping now.")
     else:
         updateIPs()