# Live Server Issues - Analysis Report
**Date:** December 18, 2025  
**Server:** brandwave.aurigaconsulting.co.in  
**Error:** Internal Server Error (500) on /auth/login

---

## ✅ What I Checked

### 1. Configuration Files
- ✅ `application/config/config.php` - Base URL correctly auto-detects production
- ✅ `application/config/database.php` - Database credentials configured
- ✅ `application/config/portal.php` - Portal ID = 3 configured
- ✅ `application/config/autoload.php` - All required helpers/libraries loaded
- ✅ `.htaccess` - Properly configured with mod_rewrite rules

### 2. Controllers & Models
- ✅ `Auth.php` controller exists and looks correct
- ✅ `User_model.php` exists
- ✅ `Log_model.php` exists
- ✅ `marketing_helper.php` with all auth functions exists

### 3. Environment Settings
- ✅ `index.php` now auto-detects production environment
- ✅ Error catcher in place to capture errors

---

## 🔴 ISSUES FOUND

### Critical Issue #1: Session Save Path Permission
**Location:** `application/config/config.php` line 403
```php
$config['sess_save_path'] = APPPATH . 'cache/';
```

**Problem:** The `application/cache/` directory must be writable for sessions to work. If this directory doesn't have proper permissions on the live server, every page load will fail with 500 error.

**Fix Required on Live Server:**
```bash
chmod 755 application/cache
# or if above doesn't work:
chmod 777 application/cache
```

---

### Critical Issue #2: Database Connection
**Location:** `application/config/database.php`
```php
'hostname' => '162.215.11.244',
'username' => 'ac3_marketing_portal',
'password' => '=Y^3GIyrG;J)TV]z',
'database' => 'ac3_marketing_portal',
```

**Potential Problems:**
1. Database server might not accept connections from live server IP
2. Firewall might be blocking port 3306
3. Portal ID 3 might not exist in the database
4. Database credentials might be incorrect for production

**How to Test:**
- Run `diagnose.php` on live server
- Check database connectivity section

---

### Critical Issue #3: File/Directory Permissions
**Directories that MUST be writable:**
- `application/logs/` - For CodeIgniter error logs
- `application/cache/` - For session storage  
- `uploads/attachments/` - For file uploads

**Fix Required on Live Server:**
```bash
chmod 755 application/logs application/cache uploads/attachments
# or
chmod 777 application/logs application/cache uploads/attachments
```

---

### Potential Issue #4: .htaccess Not Uploaded
**Problem:** Hidden files are often not uploaded by FTP clients

**Check:** 
- Make sure `.htaccess` file exists in root directory on live server
- Enable "Show hidden files" in your FTP client (FileZilla, WinSCP, etc.)

**Solution:** Re-upload `.htaccess` file to root directory

---

### Potential Issue #5: PHP Extensions Missing
**Required Extensions:**
- mysqli (for database)
- mbstring (for string handling)
- json (for JSON operations)
- session (for session management)

**Check:** Run `diagnose.php` on live server to verify

---

### Potential Issue #6: mod_rewrite Not Enabled
**Problem:** Apache mod_rewrite module might not be enabled

**Symptoms:** 
- 404 errors on all routes except index.php
- /auth/login shows 404

**Solution:** Contact hosting to enable mod_rewrite

---

## 🎯 RECOMMENDED ACTION PLAN

### Step 1: Upload Diagnostic Script (HIGHEST PRIORITY)
```
1. Upload diagnose.php to live server root
2. Access: https://brandwave.aurigaconsulting.co.in/diagnose.php
3. Read the output - it will tell you exactly what's wrong
```

### Step 2: Fix Permissions (MOST LIKELY CAUSE)
```bash
# Via SSH or cPanel Terminal:
cd /path/to/your/app
chmod 755 application/logs
chmod 755 application/cache
chmod 755 uploads/attachments

# If 755 doesn't work, try 777:
chmod 777 application/cache  # Critical for sessions!
chmod 777 application/logs
```

### Step 3: Verify .htaccess Exists
```bash
# Via SSH:
ls -la | grep htaccess

# Should show:
# -rw-r--r-- 1 user user 1234 Dec 18 .htaccess
```

### Step 4: Test Database Connection
```
Upload and run: https://brandwave.aurigaconsulting.co.in/test_connection.php
```

### Step 5: Check Error Logs
After attempting to access /auth/login:
```bash
# Check CodeIgniter logs:
tail -f application/logs/log-2025-12-18.php

# Check PHP error log:
tail -f php_error.log

# Check Apache error log (via cPanel or SSH):
tail -f /var/log/apache2/error.log
```

---

## 📊 PROBABILITY OF EACH ISSUE

1. **File Permissions (application/cache/)** - 85% likely ⚠️⚠️⚠️
2. **Database Connection/Firewall** - 60% likely ⚠️⚠️
3. **Missing .htaccess** - 40% likely ⚠️
4. **PHP Extensions Missing** - 20% likely
5. **mod_rewrite Disabled** - 30% likely
6. **Portal ID Missing in DB** - 15% likely

---

## 🔧 QUICK FIX CHECKLIST

Upload these files to live server:
- [ ] `diagnose.php` - Diagnostic script
- [ ] `index.php` - Updated with auto-environment detection
- [ ] `.htaccess` - Verify it's uploaded (hidden file!)

Run these commands on live server:
- [ ] `chmod 755 application/logs`
- [ ] `chmod 755 application/cache` (or 777 if needed)
- [ ] `chmod 755 uploads/attachments`

Access diagnostic page:
- [ ] Visit https://brandwave.aurigaconsulting.co.in/diagnose.php
- [ ] Read the output
- [ ] Fix issues shown in red

Test the application:
- [ ] Visit https://brandwave.aurigaconsulting.co.in/auth/login
- [ ] Should load login page

Security cleanup:
- [ ] Delete diagnose.php after fixing
- [ ] Delete test_connection.php
- [ ] Remove error_catcher.php include from index.php

---

## 💡 WHY IT WORKS LOCALLY BUT NOT ON LIVE

**Local Environment:**
- Development mode with display_errors = On
- Local permissions are usually permissive (Windows/WAMP/XAMPP)
- Database is localhost (no firewall issues)
- All PHP extensions installed

**Live Server:**
- Production mode with display_errors = Off (shows generic 500 error)
- Strict file permissions for security
- Remote database might have firewall/IP restrictions
- Some PHP extensions might not be enabled by default

---

## 📞 NEXT STEPS

1. **IMMEDIATELY:** Upload `diagnose.php` and access it
2. **READ OUTPUT:** It will show exactly what's wrong
3. **FIX ISSUES:** Based on diagnostic output (most likely permissions)
4. **TEST:** Try /auth/login again
5. **REPORT BACK:** Share the diagnose.php output if still having issues

---

## 🎓 HOW TO PREVENT THIS IN FUTURE

1. Always run diagnostics before deploying
2. Set proper permissions after uploading files
3. Test database connectivity separately
4. Keep error logs enabled in production (but hidden from users)
5. Use deployment checklist
6. Have staging environment that mirrors production

---

**BOTTOM LINE:** The issue is most likely file permissions on `application/cache/` directory preventing session storage. Run diagnose.php first to confirm!
