Log login attempts

utils.py

@@ -1,5 +1,6 @@
 import colorsys
 from datetime import datetime, date, timedelta
+from flask import request
 import numpy as np
 
 
@@ -253,6 +254,20 @@ def prepare_svg_plot_data(results, columns, title):
          plot_data['plot_type'] = 'table' # Fallback if essential data is missing
          return plot_data
 
+def get_client_ip():
+    """Get real client IP address, checking proxy headers first"""
+    # Check common proxy headers in order of preference
+    if request.headers.get('X-Forwarded-For'):
+        # X-Forwarded-For can contain multiple IPs, get the first (original client)
+        return request.headers.get('X-Forwarded-For').split(',')[0].strip()
+    elif request.headers.get('X-Real-IP'):
+        return request.headers.get('X-Real-IP')
+    elif request.headers.get('CF-Connecting-IP'):  # Cloudflare
+        return request.headers.get('CF-Connecting-IP')
+    else:
+        # Fallback to direct connection IP
+        return request.remote_addr
+
     # Calculate ranges (handle datetime separately)
     if x_type == 'datetime':
         valid_dates = [d for d in x_values_raw if d is not None]