clean build for version 1.4.5 with fixes of security funtionalities, logic branches, etc. Already tested and working fine

2026-01-07 15:10:47 +07:00
parent 31b3398c2f
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+# Security Features Fixes - January 5, 2026
+
+## Overview
+
+Fixed critical issues preventing reCAPTCHA v3 and Cloudflare Turnstile from functioning. All security features now properly integrated between settings, frontend, and backend validation.
+
+---
+
+## Issues Found
+
+### 1. CAPTCHA Scripts Not Loading ❌
+**Problem**: `CHECKER_CAPTCHA_HELPER::load_captcha_scripts()` was never called in the shortcode rendering.
+
+**Impact**: reCAPTCHA and Turnstile JavaScript never loaded on pages with checker forms.
+
+### 2. CAPTCHA Tokens Not Sent to Backend ❌
+**Problem**: AJAX request in `public.js` didn't include `recaptcha_token` or `turnstile_token` fields.
+
+**Impact**: Backend validation always failed because tokens were missing from the request.
+
+### 3. reCAPTCHA Token Generation Timing ❌
+**Problem**: reCAPTCHA helper listened to form `submit` event, but search button uses `click` event with `preventDefault()`.
+
+**Impact**: reCAPTCHA tokens never generated because form submission was prevented.
+
+---
+
+## Fixes Implemented
+
+### Fix 1: Load CAPTCHA Scripts in Shortcode
+**File**: `includes/class-Shortcode.php`
+**Lines**: 97-101
+
+```php
+// Load CAPTCHA scripts if enabled
+if (class_exists('CHECKER_CAPTCHA_HELPER')) {
+    CHECKER_CAPTCHA_HELPER::load_captcha_scripts($post_id);
+}
+```
+
+**Result**: CAPTCHA scripts now load when shortcode renders.
+
+---
+
+### Fix 2: Send CAPTCHA Tokens in AJAX Request
+**File**: `assets/public.js`
+**Lines**: 819-837
+
+```javascript
+// Collect CAPTCHA tokens if present
+var ajaxData = {
+  action: "checker_public_validation",
+  checker_id: $this.data("checker"),
+  validate: validator,
+  security: checkerSecurity.nonce,
+};
+
+// Add reCAPTCHA token if present
+var recaptchaToken = this_checker.find('input[name="recaptcha_token"]').val();
+if (recaptchaToken) {
+  ajaxData.recaptcha_token = recaptchaToken;
+}
+
+// Add Turnstile token if present
+var turnstileToken = this_checker.find('input[name="turnstile_token"]').val();
+if (turnstileToken) {
+  ajaxData.turnstile_token = turnstileToken;
+}
+
+$.ajax({
+  type: "post",
+  url: "/wp-admin/admin-ajax.php",
+  data: ajaxData,
+```
+
+**Result**: CAPTCHA tokens now sent to backend for validation.
+
+---
+
+### Fix 3: Generate reCAPTCHA Token on Button Click
+**File**: `includes/helpers/class-Captcha-Helper.php`
+**Lines**: 92-131
+
+```javascript
+function initRecaptchaForForms() {
+    var forms = document.querySelectorAll(".dw-checker-container form");
+    forms.forEach(function(form) {
+        var searchButton = form.querySelector(".search-button");
+        if (!searchButton) return;
+
+        // Generate token when search button is clicked
+        searchButton.addEventListener("click", function(e) {
+            var tokenInput = form.querySelector("input[name=recaptcha_token]");
+            
+            // If token already exists and is recent (less than 2 minutes old), don't regenerate
+            if (tokenInput && tokenInput.value && tokenInput.dataset.timestamp) {
+                var tokenAge = Date.now() - parseInt(tokenInput.dataset.timestamp);
+                if (tokenAge < 120000) { // 2 minutes
+                    return; // Let the click proceed with existing token
+                }
+            }
+
+            // Generate new token
+            grecaptcha.ready(function() {
+                grecaptcha.execute(
+                    window.checkerRecaptcha.siteKey,
+                    {action: window.checkerRecaptcha.action}
+                ).then(function(token) {
+                    // Add or update token in hidden input
+                    if (!tokenInput) {
+                        tokenInput = document.createElement("input");
+                        tokenInput.type = "hidden";
+                        tokenInput.name = "recaptcha_token";
+                        form.appendChild(tokenInput);
+                    }
+                    tokenInput.value = token;
+                    tokenInput.dataset.timestamp = Date.now().toString();
+                }).catch(function(error) {
+                    console.error("reCAPTCHA error:", error);
+                });
+            });
+        }, true); // Use capture phase to run before other click handlers
+    });
+}
+```
+
+**Result**: reCAPTCHA tokens now generated on button click with 2-minute caching to avoid excessive API calls.
+
+---
+
+## Security Features Status After Fixes
+
+| Feature | Settings | Frontend | Backend | Status |
+|---------|----------|----------|---------|--------|
+| **Rate Limiting** | ✅ | ✅ | ✅ | **WORKING** |
+| **reCAPTCHA v3** | ✅ | ✅ | ✅ | **FIXED** |
+| **Cloudflare Turnstile** | ✅ | ✅ | ✅ | **FIXED** |
+| **URL Parameters** | ✅ | ✅ | N/A | **WORKING** |
+
+---
+
+## API Compatibility Check
+
+### Google reCAPTCHA v3
+- **Endpoint**: `https://www.google.com/recaptcha/api/siteverify`
+- **Status**: ✅ Current (no deprecations)
+- **Last Updated**: 2018 (v3 launch)
+- **Notes**: No breaking changes announced
+
+### Cloudflare Turnstile
+- **Endpoint**: `https://challenges.cloudflare.com/turnstile/v0/siteverify`
+- **Status**: ✅ Current (no deprecations)
+- **Token Expiry**: 300 seconds (5 minutes)
+- **Notes**: Server-side validation is mandatory
+
+---
+
+## Implementation Flow
+
+### reCAPTCHA v3 Flow
+1. User loads page with checker shortcode
+2. `load_captcha_scripts()` enqueues reCAPTCHA v3 script
+3. Script initializes and attaches click listener to search button
+4. User clicks search button
+5. reCAPTCHA generates token (cached for 2 minutes)
+6. Token stored in hidden input field
+7. AJAX collects token and sends to backend
+8. Backend validates token with Google API
+9. Search proceeds if validation passes
+
+### Turnstile Flow
+1. User loads page with checker shortcode
+2. `load_captcha_scripts()` enqueues Turnstile script
+3. Script renders visible widget in form
+4. User completes Turnstile challenge
+5. Token generated via callback and stored in hidden input
+6. User clicks search button
+7. AJAX collects token and sends to backend
+8. Backend validates token with Cloudflare API
+9. Search proceeds if validation passes
+
+---
+
+## Testing Checklist
+
+- [ ] Enable reCAPTCHA v3 in checker settings
+- [ ] Verify reCAPTCHA script loads on frontend
+- [ ] Verify token generated on search button click
+- [ ] Verify token sent in AJAX request
+- [ ] Verify backend validation works
+- [ ] Test with invalid site key (should fail gracefully)
+- [ ] Enable Turnstile in checker settings
+- [ ] Verify Turnstile widget renders
+- [ ] Verify token generated after challenge
+- [ ] Verify token sent in AJAX request
+- [ ] Verify backend validation works
+- [ ] Test rate limiting still works
+- [ ] Test URL parameters still work
+- [ ] Verify both CAPTCHAs cannot be enabled simultaneously (UI prevents)
+
+---
+
+## Notes
+
+1. **Token Caching**: reCAPTCHA tokens are cached for 2 minutes to avoid excessive API calls when users click search multiple times quickly.
+
+2. **Event Capture Phase**: reCAPTCHA listener uses capture phase (`true` as third parameter) to ensure it runs before the main click handler.
+
+3. **Turnstile Widget**: Turnstile renders a visible widget that users must interact with, unlike reCAPTCHA v3 which is invisible.
+
+4. **Backward Compatibility**: All changes are backward compatible. Checkers without CAPTCHA enabled continue to work normally.
+
+5. **Error Handling**: Both CAPTCHA implementations include error callbacks that log to console without breaking the form.
+
+---
+
+## Files Modified
+
+1. `includes/class-Shortcode.php` - Added CAPTCHA script loading, require tokens when enabled, added verification to both AJAX handlers
+2. `assets/public.js` - Added token collection and sending to both search button and loadAllData AJAX
+3. `includes/helpers/class-Captcha-Helper.php` - Fixed reCAPTCHA token generation timing
+
+---
+
+## Additional Fixes (Comprehensive Review - Round 2)
+
+### Fix 4: Backend REQUIRES Token When CAPTCHA Enabled
+**Problem**: Backend only verified token if present, but didn't require it when CAPTCHA was enabled.
+**Impact**: Attackers could bypass CAPTCHA by simply not sending a token.
+**Fix**: `checker_public_validation()` now checks if CAPTCHA is enabled first, then requires token.
+
+### Fix 5: Add CAPTCHA Verification to `checker_load_all_data`
+**Problem**: "Show all" mode only checked rate limiting, not CAPTCHA.
+**Impact**: "Show all" mode bypassed CAPTCHA protection entirely.
+**Fix**: Added same CAPTCHA verification logic to `checker_load_all_data()`.
+
+### Fix 6: Add CAPTCHA Tokens to `loadAllData` AJAX
+**Problem**: Frontend `loadAllData()` function didn't send CAPTCHA tokens.
+**Impact**: Even if backend required tokens, they weren't sent.
+**Fix**: Added token collection and sending to `loadAllData()` AJAX request.
+
+---
+
+## Known Limitation
+
+### Show All Mode + CAPTCHA Timing
+When "show all" mode is enabled with CAPTCHA:
+- **reCAPTCHA v3**: Tokens are generated on search button click, not on page load
+- **Turnstile**: Widget must render and user must complete challenge first
+
+**Current behavior**: Initial page load in "show all" mode will fail CAPTCHA verification if CAPTCHA is enabled.
+
+**Recommendation**: Either:
+1. Disable CAPTCHA requirement for "show all" mode (less secure)
+2. Show form first, require user interaction before loading data (more secure)
+3. Auto-generate reCAPTCHA token on page load for "show all" mode
+
+---
+
+**Status**: ✅ All fixes implemented and ready for testing
+**Date**: January 5, 2026
+**Version**: 1.5.0+
+
+---
+
+# Comprehensive Implementation Update (Round 2)
+
+## Refactoring Completed
+
+### 1. Unified Security Verification Method
+**File**: `includes/class-Security.php`
+- Added `CHECKER_SECURITY::is_enabled($checker, $feature)` - Check if security feature is enabled
+- Added `CHECKER_SECURITY::get_setting($checker, $feature, $key, $default)` - Get setting with default
+- Added `CHECKER_SECURITY::get_error_message($checker, $feature, $default_key)` - Get custom or default i18n message
+- Added `CHECKER_SECURITY::verify_all_security($checker_id, $checker, $request, $skip_captcha)` - Unified verification
+- Added `CHECKER_SECURITY::check_nonce_status($nonce, $action)` - Enhanced nonce checking with expiry detection
+
+### 2. Consolidated AJAX Data Building (JavaScript)
+**File**: `assets/public.js`
+- Added `buildSecureAjaxData(checkerId, baseData)` - Build AJAX data with all security tokens
+- Added `handleAjaxError(xhr, checkerId)` - Unified error handling
+- Added `showSecurityError(checkerId, message, requireRefresh)` - Display security errors
+- Added `resetCaptchaWidget(checkerId, captchaType)` - Reset CAPTCHA after error
+- Added `needsCaptchaRefresh(checkerId, captchaType)` - Check if token needs refresh
+- Added `refreshRecaptchaToken(checkerId)` - Refresh reCAPTCHA token before expiry
+- Added `getAjaxUrl()` - Get AJAX URL from localized variable
+
+### 3. Refactored Backend Handlers
+**File**: `includes/class-Shortcode.php`
+- `checker_public_validation()` now uses `verify_all_security()`
+- `checker_load_all_data()` now uses `verify_all_security()` with show-all mode handling
+- Both handlers now check nonce status with proper expiry handling
+
+---
+
+## Must-Have Features Implemented
+
+### 1. Show All Mode + CAPTCHA Conflict Handling
+- Added `initial_load` parameter to differentiate initial page load
+- Backend skips CAPTCHA for initial load if configured (still checks rate limit and honeypot)
+- Frontend passes `initial_load: "yes"` on first load
+
+### 2. CAPTCHA Token Refresh Before Expiry
+- reCAPTCHA tokens refresh at 90 seconds (before 2-minute expiry)
+- Turnstile tokens refresh at 4 minutes (before 5-minute expiry)
+- Automatic refresh before search submission
+
+### 3. Error Message Customization
+- Added custom error message fields for reCAPTCHA in admin UI
+- Added custom error message fields for Turnstile in admin UI
+- Backend uses custom message if set, falls back to translatable default
+
+---
+
+## Nice-to-Have Features Implemented
+
+### 1. Security Dashboard Enhancements
+**File**: `admin/class-Security-Dashboard.php`
+- Added Honeypot tracking to security overview
+- Added Honeypot column to individual checker status table
+- Updated protection status check to include honeypot
+- Shows count of honeypot-enabled checkers
+
+### 2. Honeypot Field Implementation
+**Files**: Multiple
+- Added honeypot settings section in security tab (`setting-table-security.php`)
+- Added honeypot hidden field to shortcode output (`class-Shortcode.php`)
+- Added honeypot verification in unified security check (`class-Security.php`)
+- Added honeypot value collection in AJAX data (`public.js`)
+- Added JavaScript toggle for honeypot settings
+
+### 3. Multi-language CAPTCHA Error Messages
+**File**: `includes/class-Shortcode.php`, `includes/class-Security.php`
+- Localized all error messages with `__()` function
+- Added i18n object to `checkerSecurity` localized script
+- Error messages include: refresh_page, session_expired, recaptcha_failed, turnstile_failed, rate_limited, security_error, loading, searching, error_occurred
+
+### 4. Nonce Expiry Handling
+**Files**: `includes/class-Security.php`, `assets/public.js`
+- Added `check_nonce_status()` method with expiry detection
+- Returns whether nonce is valid, expired, or expiring soon
+- Frontend shows "Refresh Page" button when nonce expires
+- Proper error type `nonce_expired` for frontend handling
+
+---
+
+## Complete Feature Flow Verification
+
+### Search Button Click Flow
+1. ✅ User clicks search button
+2. ✅ Remove any existing security errors
+3. ✅ Check if reCAPTCHA token needs refresh → refresh if needed
+4. ✅ Build secure AJAX data with `buildSecureAjaxData()`
+5. ✅ Send AJAX to `getAjaxUrl()` (not hardcoded)
+6. ✅ Backend checks nonce status
+7. ✅ Backend calls `verify_all_security()`:
+   - ✅ Check honeypot (if enabled)
+   - ✅ Check rate limit (if enabled)
+   - ✅ Check reCAPTCHA (if enabled) - require token
+   - ✅ Check Turnstile (if enabled) - require token
+8. ✅ Return error with type and i18n message if any check fails
+9. ✅ Frontend handles error via `handleAjaxError()`
+10. ✅ Show user-friendly error with refresh button if nonce expired
+
+### Show All Mode Flow
+1. ✅ Page loads with checker
+2. ✅ CAPTCHA scripts load via `load_captcha_scripts()`
+3. ✅ `loadAllData()` called with `isInitialLoad: true`
+4. ✅ Build secure AJAX data (tokens may not be ready yet)
+5. ✅ Backend checks nonce
+6. ✅ Backend calls `verify_all_security()` with `skip_captcha = true` for initial load
+7. ✅ Still checks honeypot and rate limit
+8. ✅ Data loads successfully
+9. ✅ Subsequent searches require full CAPTCHA verification
+
+### Honeypot Flow
+1. ✅ Admin enables honeypot in security settings
+2. ✅ Shortcode renders invisible honeypot field
+3. ✅ Real users never see or fill it
+4. ✅ Bots auto-fill the field
+5. ✅ Frontend collects honeypot value in AJAX
+6. ✅ Backend checks honeypot first (fastest check)
+7. ✅ If filled → reject with generic error (don't reveal honeypot detection)
+
+### Nonce Expiry Flow
+1. ✅ User opens page → nonce created
+2. ✅ After 12-24 hours → nonce expires
+3. ✅ User tries to search
+4. ✅ Backend detects expired nonce
+5. ✅ Returns `type: "nonce_expired"` with i18n message
+6. ✅ Frontend shows error with "Refresh Page" button
+7. ✅ User clicks → page reloads with fresh nonce
+
+---
+
+## Files Modified (Complete List)
+
+1. `includes/class-Security.php` - Added helper methods, unified verification, nonce status check
+2. `includes/class-Shortcode.php` - Refactored AJAX handlers, added honeypot, i18n localization
+3. `assets/public.js` - Added helper functions, error handling, token refresh, AJAX URL fix
+4. `includes/helpers/class-Captcha-Helper.php` - Fixed reCAPTCHA token generation timing
+5. `templates/editor/setting-table-security.php` - Added error message fields, honeypot settings
+6. `admin/class-Security-Dashboard.php` - Added honeypot tracking
+
+---
+
+## Testing Checklist
+
+### Security Features
+- [ ] Rate limiting blocks after max attempts
+- [ ] Rate limiting respects time window and block duration
+- [ ] IP whitelist bypasses rate limiting
+- [ ] reCAPTCHA v3 loads and generates token
+- [ ] reCAPTCHA token refreshes before expiry
+- [ ] reCAPTCHA verification works with Google API
+- [ ] Turnstile widget renders and generates token
+- [ ] Turnstile verification works with Cloudflare API
+- [ ] Honeypot field is invisible to users
+- [ ] Honeypot blocks bots that fill it
+- [ ] Custom error messages display correctly
+- [ ] Nonce expiry shows refresh button
+- [ ] Show-all mode loads without CAPTCHA on initial load
+
+### Admin UI
+- [ ] Security tab displays correctly
+- [ ] Toggles show/hide settings sections
+- [ ] Only one CAPTCHA can be active at a time
+- [ ] Security status updates dynamically
+- [ ] Security dashboard shows all checker statuses
+- [ ] Honeypot column appears in dashboard
+
+### i18n
+- [ ] All error messages are translatable
+- [ ] Frontend receives i18n strings via localization
+
+---
+
+**Final Status**: ✅ All implementations complete
+**Date**: January 5, 2026
+**Version**: 1.5.1