Added Cloudflare Dynamic DNS Updater

Dynamic_DNS/Cloudflare/README.md

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+# 🔁 Dynamic DNS Updater for Cloudflare with Mullvad IP
+
+This script updates A records in Cloudflare with your current public IP as reported by [Mullvad](https://mullvad.net)'s IP check service. It supports:
+
+- Multiple domains/zones via `.env` files
+- Secure API access using **Cloudflare API Tokens**
+- Smart updates: only changes DNS if your IP has changed
+- Daily logging to `./logs/`
+
+---
+
+## 🚀 Features
+
+- ✅ Fetches current public IP from Mullvad API (`https://ipv4.am.i.mullvad.net/json`)
+- ✅ Uses `.env` files to manage multiple Cloudflare DNS records
+- ✅ Supports **API Tokens** (safer than global keys)
+- ✅ Skips unnecessary updates if IP hasn't changed
+- ✅ Logs every run to `logs/update_YYYY-MM-DD.log`
+
+---
+
+## 📁 Project Structure
+
+.
+├── update_cloudflare_ip.sh # Main script
+├── zones/ # Folder for per-domain config files
+│ ├── example_com.env
+│ └── another_domain.env
+└── logs/ # Auto-created daily log files
+  └── update_2025-10-05.log
+
+
+
+---
+
+## ⚙️ Configuration
+
+1. Create a `zones/` folder (already included in repo).
+2. Add one `.env` file per domain/zone, named descriptively. Example:
+
+### `zones/subdomain.domain.com.env`
+
+```
+ZONE_ID="your_cloudflare_zone_id"
+DNS_RECORD_ID="your_dns_record_id"
+CLOUDFLARE_API_TOKEN="your_cloudflare_api_token"
+DNS_NAME="subdomain.domain.com"
+```
+
+## ✅ Use Cloudflare API Tokens with permission:
+Zone → DNS → Edit for the required zone.
+
+🧪 Usage
+
+Make the script executable:
+```
+chmod +x update_cloudflare_ip.sh
+```
+
+Run it manually:
+```
+./update_cloudflare_ip.sh
+```
+
+Check logs:
+```
+cat logs/update_$(date +%F).log
+```
+
+## 🕒 Automation (Cron Example)
+
+To run the script every 10 minutes, edit your crontab:
+```
+crontab -e
+```
+
+Add this line:
+```
+*/10 * * * * /path/to/update_cloudflare_ip.sh >> /dev/null 2>&1
+
+```
+
+Or, if you want to keep logs automatically:
+```
+*/10 * * * * /path/to/update_cloudflare_ip.sh >> /path/to/logs/cron.log 2>&1
+```
+
+
+## ✅ Requirements
+
+* bash (scripted for Linux/macOS)
+* curl
+* jq (lightweight and flexible command-line JSON processor): https://github.com/jqlang/jq
+
+Install jq if missing:
+```
+# Debian/Ubuntu
+sudo apt install jq
+
+# macOS (Homebrew)
+brew install jq
+```
+
+## 🔐 Security Tip
+
+Never share your .env files or commit them to public repositories. They contain sensitive credentials.
+
+Use .gitignore to ignore your secrets:
+
+.gitignore
+```
+zones/*.env
+logs/
+```
+
+
+## 🙋 FAQ
+
+Q: What happens if the IP hasn't changed?
+A: The script detects it and skips the update.
+
+Q: What if one domain fails?
+A: The script continues to process the remaining .env files.
+
+Q: Can I use IPv6?
+A: Not currently. This script uses Mullvad's IPv4 API. IPv6 support can be added if needed.

Dynamic_DNS/Cloudflare/update_cloudflare_ip.sh

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+#!/bin/bash
+
+# Exit on error
+set -e
+
+# --- Configuration ---
+ENV_DIR="./zones"
+LOG_DIR="./logs"
+DATE=$(date +%F)
+LOG_FILE="$LOG_DIR/update_${DATE}.log"
+
+# --- Ensure log directory exists ---
+mkdir -p "$LOG_DIR"
+
+# --- Logging function ---
+log() {
+  local message="$1"
+  echo "$message" | tee -a "$LOG_FILE"
+}
+
+# --- Step 1: Get current IP from Mullvad ---
+log "[*] Fetching IP from Mullvad..."
+IP_INFO=$(curl -s https://ipv4.am.i.mullvad.net/json)
+CURRENT_IP=$(echo "$IP_INFO" | jq -r '.ip')
+
+if [[ -z "$CURRENT_IP" ]]; then
+  log "[!] Failed to extract IP address."
+  exit 1
+fi
+
+log "[*] Current public IP is: $CURRENT_IP"
+log ""
+
+# --- Step 2: Loop through all .env files ---
+for ENV_FILE in "$ENV_DIR"/*.env; do
+  log "[*] Processing config: $ENV_FILE"
+
+  # Load environment variables
+  set -a
+  source "$ENV_FILE"
+  set +a
+
+  # Check for required variables
+  if [[ -z "$ZONE_ID" || -z "$DNS_RECORD_ID" || -z "$CLOUDFLARE_API_TOKEN" || -z "$DNS_NAME" ]]; then
+    log "[!] Missing required variables in $ENV_FILE"
+    log ""
+    continue
+  fi
+
+  # --- Step 3: Get existing DNS record from Cloudflare ---
+  log "[*] Fetching current DNS record for $DNS_NAME..."
+
+  DNS_RECORD=$(curl -s -X GET "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$DNS_RECORD_ID" \
+    -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
+    -H "Content-Type: application/json")
+
+  EXISTING_IP=$(echo "$DNS_RECORD" | jq -r '.result.content')
+
+  if [[ "$EXISTING_IP" == "$CURRENT_IP" ]]; then
+    log "[=] No update needed. $DNS_NAME already points to $CURRENT_IP"
+    log ""
+    continue
+  fi
+
+  # --- Step 4: Update DNS record ---
+  log "[*] IP has changed: $EXISTING_IP → $CURRENT_IP"
+  log "[*] Updating Cloudflare DNS record..."
+
+  UPDATE_RESPONSE=$(curl -s -X PUT "https://api.cloudflare.com/client/v4/zones/$ZONE_ID/dns_records/$DNS_RECORD_ID" \
+    -H "Authorization: Bearer $CLOUDFLARE_API_TOKEN" \
+    -H "Content-Type: application/json" \
+    -d "{
+          \"type\": \"A\",
+          \"name\": \"$DNS_NAME\",
+          \"content\": \"$CURRENT_IP\",
+          \"ttl\": 3600,
+          \"proxied\": true,
+          \"comment\": \"Auto-updated via script\"
+        }")
+
+  SUCCESS=$(echo "$UPDATE_RESPONSE" | jq -r '.success')
+
+  if [[ "$SUCCESS" == "true" ]]; then
+    log "[+] Successfully updated $DNS_NAME to $CURRENT_IP"
+  else
+    log "[!] Failed to update $DNS_NAME"
+    log "Cloudflare response:"
+    echo "$UPDATE_RESPONSE" | tee -a "$LOG_FILE"
+  fi
+
+  log ""
+done
+

Dynamic_DNS/Cloudflare/zones/subdomain.domain.com.env

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+ZONE_ID="your_zone_id"
+DNS_RECORD_ID="your_dns_record_id"
+CLOUDFLARE_API_TOKEN="your_cloudflare_api_token"
+DNS_NAME="subdomain.example.com"
+