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