v3.0.0: Multi-provider captcha architecture#328
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This major release introduces a modular architecture supporting multiple captcha providers: **New Features:** - Multi-provider architecture with 4 captcha systems: * Google reCAPTCHA v2/v3 (existing, refactored) * Google reCAPTCHA Enterprise (with Google Cloud integration) * hCaptcha (privacy-focused alternative) * Math Captcha (native, no external dependencies) - Provider abstraction layer: * CaptchaProviderInterface: common contract for all providers * AbstractCaptchaProvider: shared functionality * CaptchaFactory: dynamic provider instantiation * Provider-specific templates - Enhanced configuration: * Provider selection dropdown in admin * Dynamic configuration fields per provider * Math Captcha difficulty levels (easy/medium/hard) * Google Enterprise project/key configuration **Technical Changes:** - Refactored eicaptcha.php to use provider pattern - Updated ConfigForm.php for provider management - Enhanced Debugger.php with provider checks - Added upgrade script for migration from 2.x - All templates now use provider includes for flexibility **Backward Compatibility:** - Automatic migration from 2.x to 3.0 - Defaults to google_recaptcha provider - All existing configurations preserved - Upgrade script: upgrade/upgrade-3.0.0.php **Architecture:** - PSR-4 compliant provider structure - Lazy loading of providers via factory - Session-based validation for Math Captcha - CSRF protection for Math Captcha - Extensible: new providers can be registered Breaking changes: Version bumped to 3.0.0 due to architectural changes
- Complete guide for creating custom captcha providers - Step-by-step implementation instructions - Code examples for all required methods - Template creation guidelines - Best practices and security recommendations - Real-world examples (Cloudflare Turnstile) - Troubleshooting and testing checklist
Cloudflare Turnstile is a free, privacy-friendly alternative to reCAPTCHA: - No Google tracking - Free tier: 1M requests/month - Modern, user-friendly interface - Support for light, dark, and auto themes - Compact and normal widget sizes **New Provider:** - TurnstileProvider: Full implementation with API validation - Template: turnstile.tpl with theme and size options - Configuration fields: Site Key, Secret Key, Theme, Size **API Integration:** - Endpoint: https://challenges.cloudflare.com/turnstile/v0/siteverify - Response field: cf-turnstile-response - Dashboard: https://dash.cloudflare.com/ **Architecture Improvements:** - Added getResponseFieldName() to CaptchaProviderInterface - Default implementation in AbstractCaptchaProvider - Dynamic field name support in _validateCaptcha() - Math and Turnstile providers now declare custom field names **Configuration:** - 4 new config keys (site/secret keys, theme, size) - Default theme: auto (follows system preferences) - Default size: normal - Full integration in ConfigForm and Installer This brings the total to 5 captcha providers: 1. Google reCAPTCHA v2/v3 2. Google reCAPTCHA Enterprise 3. hCaptcha 4. Math Captcha (native) 5. Cloudflare Turnstile (new)
**Problem:** - Configuration fields were hardcoded in ConfigForm.php - Adding new providers required editing ConfigForm in 3 places - Inconsistent with provider architecture where providers define their own fields **Solution:** - Created getProviderSpecificFields() to dynamically load from current provider - Split fields into logical groups (provider, common, advanced) - Generic postProcess() loops through all fields automatically - Generic getConfigFieldsValues() loads all values dynamically - Added getAllConfigurationFields() helper for field aggregation **Result:** - Adding new provider now requires ZERO changes to ConfigForm.php - Only need to implement getConfigFields() in provider class - Fully consistent with provider architecture - ~200 lines of hardcoded fields removed **Changes:** - src/ConfigForm.php: Complete refactoring with new methods: * getProviderSpecificFields(): Loads fields from current provider * getCommonFields(): Returns always-visible common fields * getAdvancedFields(): Returns advanced configuration * getAllConfigurationFields(): Aggregates all fields from all sources * Simplified postProcess(): Generic loop through all fields * Simplified getConfigFieldsValues(): Generic value loading **Impact:** Provider developers now only need to: 1. Create Provider class with getConfigFields() 2. Register in CaptchaFactory 3. Create template file No ConfigForm.php modifications needed when adding new providers.
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Closing this in favor of a fresh start on the |
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This major release introduces a modular architecture supporting multiple captcha providers:
New Features:
Multi-provider architecture with 4 captcha systems:
Provider abstraction layer:
Enhanced configuration:
Technical Changes:
Backward Compatibility:
Architecture:
Breaking changes: Version bumped to 3.0.0 due to architectural changes