feat: enhance platform access logging with ip hash and unify salt config

.github/workflows/devfactory-homepage.yml

@@ -32,6 +32,7 @@ jobs:
           cat > .env <<'EOF'
           APP_HOST=${{ vars.APP_HOST }}
           DATABASE_URL=${{ secrets.DATABASE_URL }}
+          ACCESS_LOGGING_IP_SALT=${{ secrets.ACCESS_LOGGING_IP_SALT }}
           EOF
 
       - name: Build & up (prod)

platform/.env.example

@@ -3,3 +3,6 @@ APP_HOST=your-domain.com
 
 # Database Setting
 DATABASE_URL=postgresql://user:pass@devfactory-postgres:5432/dbname
+
+# Logging Setting
+ACCESS_LOGGING_IP_SALT=your-secret-salt-here

platform/docker-compose.yml

@@ -35,6 +35,7 @@ services:
     restart: unless-stopped
     environment:
       - DATABASE_URL=${DATABASE_URL}
+      - ACCESS_LOGGING_IP_SALT=${ACCESS_LOGGING_IP_SALT}
       - PORT=3000
     networks:
       - traefik

platform/server/src/index.js

@@ -1,5 +1,6 @@
 require('dotenv').config();
 const express = require('express');
+const crypto = require('crypto');
 const { Pool } = require('pg');
 const cors = require('cors');
 
@@ -25,6 +26,35 @@ pool.query('SELECT NOW()', (err, res) => {
 });
 
 // API Routes
+
+/**
+ * Extracts the client IP address from request headers or connection info.
+ */
+function getClientIp(req) {
+    // Check X-Forwarded-For header (common for reverse proxies)
+    const forwardedFor = req.headers['x-forwarded-for'];
+    if (forwardedFor) {
+        // Can be a comma-separated list; the first one is the original client
+        return forwardedFor.split(',')[0].trim();
+    }
+
+    // Check X-Real-IP header
+    const realIp = req.headers['x-real-ip'];
+    if (realIp) {
+        return realIp;
+    }
+
+    // Fallback to Express req.ip or socket address
+    return req.ip || req.socket.remoteAddress;
+}
+
+/**
+ * Hashes the IP address with a salt, matching the behavior in the cert system.
+ */
+function hashIp(ip, salt = '') {
+    if (!ip) return null;
+    return crypto.createHash('sha256').update(salt + ip).digest('hex');
+}
 app.get('/api/health', (req, res) => {
     res.json({ status: 'ok' });
 });
@@ -33,12 +63,15 @@ app.get('/api/health', (req, res) => {
 app.post('/api/stats/visit', async (req, res) => {
     try {
         const { path, userAgent } = req.body;
-        // 기존 로그 포맷에 맞춰 method는 'PAGEVIEW'로, referrer는 현재 호스트로 기록
         const referrer = req.headers.referer || '';
 
+        // Extract client IP and generate hash
+        const clientIp = getClientIp(req);
+        const ipHash = hashIp(clientIp, process.env.ACCESS_LOGGING_IP_SALT || '');
+
         await pool.query(
-            'INSERT INTO logging.access_log (path, method, status, user_agent, referrer, ts) VALUES ($1, $2, $3, $4, $5, NOW())',
-            [path || '/', 'PAGEVIEW', 200, userAgent, referrer]
+            'INSERT INTO logging.access_log (path, method, status, ip_hash, user_agent, referrer, ts) VALUES ($1, $2, $3, $4, $5, $6, NOW())',
+            [path || '/', 'PAGEVIEW', 200, ipHash, userAgent, referrer]
         );
         res.status(201).json({ message: 'Visit logged successfully' });
     } catch (err) {