Update 2025-04-13_15:16:39

update_zone.sh

@@ -0,0 +1,104 @@
+#!/bin/zsh
+# Script Version: 10.6
+# Description: Dyn DNS update script, checks token, compares IPs, and updates DNS zone if needed.
+
+# Set variables
+# ========
+TOKEN_FILE="~/.dynProxy_token"
+IP_FILE="~/.ip.txt"
+UPDATE_URL="http://ip.dynproxy.net/update_zone"
+LOG_FILE="/var/log/update_zone.log"
+
+# Detect if script is running interactively
+if [[ -t 1 ]]; then
+    INTERACTIVE=true
+else
+    INTERACTIVE=false
+fi
+
+# Functions
+# ========
+log() {
+    print "$(date '+%Y-%m-%dT%H:%M:%S.%6N'): $1" >> "$LOG_FILE"
+}
+
+info() {
+    if [[ "$INTERACTIVE" = true ]]; then
+        echo "$1"
+    fi
+}
+
+# Output FastCGI headers if applicable
+if [ -t 0 ]; then
+    echo "Content-Type: text/plain"
+    echo ""
+fi
+
+# Ensure the token file exists
+if [ ! -f "$TOKEN_FILE" ]; then
+    log "ERROR: Token file not found."
+    exit 1
+fi
+
+# Read the token
+TOKEN=$(< "$TOKEN_FILE")
+if [ -z "$TOKEN" ]; then
+    log "ERROR: Token is empty."
+    exit 1
+fi
+
+# Log the token retrieval
+log "INFO: Token retrieved for update."
+
+# Fetch the current public IP from the external service
+IP_CURL=$(curl -s http://ip.dynproxy.net)
+if [ -z "$IP_CURL" ]; then
+    log "ERROR: Failed to fetch current public IP."
+    exit 1
+fi
+
+# Ensure the IP file exists
+if [ ! -f "$IP_FILE" ]; then
+    log "INFO: IP file not found. Creating a new one with current IP."
+    echo "$IP_CURL" > "$IP_FILE"
+    log "INFO: IP file created with initial IP $IP_CURL."
+    info "Initial IP file created with IP: $IP_CURL"
+    PREVIOUS_IP="" # Set to empty to force update logic
+else
+    # Read the previous IP from the IP file
+    PREVIOUS_IP=$(< "$IP_FILE")
+fi
+
+# Compare the current IP with the previous IP
+if [ "$IP_CURL" != "$PREVIOUS_IP" ]; then
+    log "INFO: IP has changed from $PREVIOUS_IP to $IP_CURL. Proceeding with DNS update."
+
+    # Log the IP to be updated
+    log "INFO: Updating DNS for IP $IP_CURL."
+
+    # Post the token and IP to trigger the DNS zone update
+    RESPONSE=$(curl -s -o /tmp/curl_output -w "%{http_code}" -X POST \
+                   -H "Content-Type: application/x-www-form-urlencoded" \
+                   --data-urlencode "token=$TOKEN" \
+                   --data-urlencode "ip=$IP_CURL" \
+                   $UPDATE_URL)
+
+    # Log the response and result
+    if [ "$RESPONSE" -eq 200 ]; then
+        log "SUCCESS: DNS zone update triggered successfully for token $TOKEN and IP $IP_CURL."
+        info "DNS zone update triggered successfully"
+        # Write the new IP to the IP file
+        echo "$IP_CURL" > "$IP_FILE"
+    else
+        log "ERROR: Failed to trigger DNS zone update for token $TOKEN and IP $IP_CURL. Response code: $RESPONSE. Response body: $(cat /tmp/curl_output)"
+        info "Failed to trigger DNS zone update. HTTP response: $RESPONSE"
+        exit 1
+    fi
+else
+    log "INFO: IP has not changed. No update needed."
+    info "IP has not changed. No update needed."
+fi
+
+# Cleanup temporary files
+rm -f /tmp/curl_output
+