12. Authentication Plugins (auth/): Single Sign-On (SSO), OAuth2, SAML & Active Directory Sync • Moodle LMS: Enterprise Architecture & Plugin Development • Rishabh Ki Kaksha

Moodle LMS: Enterprise Architecture & Plugin Development › 12. Authentication Plugins (auth/): Single Sign-On (SSO), OAuth2, SAML & Active Directory Sync

50 mins

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Course Syllabus

Module 1: Moodle Core Architecture, Directory Structure & $CFG

01. Moodle Core Architecture: Modular Architecture, Directory Tree, $CFG & $SITE 02. Moodle Request Lifecycle: setup.php, config.php, $PAGE & $OUTPUT Renderers 03. The Frankenstyle Component Naming Convention & Plugin Types Taxonomy

Part 1: Core Architecture, Database & Plugin Dev

Module 2: Database Layer ($DB API) & XMLDB Schema Management

04. Moodle Database API ($DB): get_records, insert_record, execute & Safe Parameter Binding 05. XMLDB Schema Architecture: db/install.xml, upgrade.php & Automated Database Migrations 06. Complex SQL Queries with Recordsets, Pagination & Memory-Efficient Iterators

Part 2: Web Services, High-Scale MUC & AI Subsystem

Module 3: Plugin Development Lifecycle: Block, Local & Activity Modules

07. Building Custom Block Plugins (blocks/): Structure, view.php, Capabilities & Settings 08. Building Custom Local Plugins (local/): System Hooks, Navigation Injection & Cron Tasks 09. Building Custom Activity Modules (mod/): mod_form.php, Grades Integration & Completion API 10. Moodle Form API (moodleform): Validation Rules, File Manager & AJAX Elements

Module 4: Security, Access Control (Access API) & Authentication

11. Moodle Access API: Contexts Hierarchy, Roles, Capabilities (db/access.php) & has_capability() 12. Authentication Plugins (auth/): Single Sign-On (SSO), OAuth2, SAML & Active Directory Sync 13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions

Module 5: Web Services, Events & High-Scale Caching (MUC)

14. External REST Web Services: db/services.php, External API Functions & Mobile App Interop 15. Moodle Events API: Observer Pattern, Custom Events (core\event) & Triggering Webhooks 16. Moodle Task API: Ad-hoc Tasks vs Scheduled Cron Tasks with Queuing & Logging 17. Moodle Universal Cache (MUC): Definition of Cache (db/caches.php), Redis & Memory Scaling

Module 6: Enterprise AI Integration, Performance & Cloud Clustering

18. Moodle AI Subsystem (core_ai): Pluggable AI Providers, Course Summaries & Smart AI Tutors 19. Moodle Multi-Tier Enterprise Performance: Redis Session Caching, NFS Moodledata & Read Replicas 20. Production High-Availability Cloud Deployment: Dockerized Moodle, Nginx Tuning & MySQL Clustering

Interactive Lesson Studio

# 12. Authentication Plugins (auth/): Single Sign-On (SSO), OAuth2, SAML & Active Directory Sync

> Moodle LMS Enterprise Notes by Rishabh - Topic 12

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### 1. `auth_plugin_base` Subsystem Architecture 🔑

Custom Authentication plugin (`auth/custom_sso/auth.php`):

```php
class auth_plugin_custom_sso extends auth_plugin_base {
    public function user_login($username, $password): bool {
        // Authenticate against enterprise corporate identity provider:
        return EnterpriseIdP::verify($username, $password);
    }

public function user_authenticated_hook(&$user, $username, $password): void {
        // Auto-provision or update user profile fields:
        $user->institution = "Boost Engine Enterprise";
    }
}
```

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### 2. Master Comparison Matrix

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### 3. Interview Ke 3 Sawal Is Topic Se

1. **Just-In-Time (JIT) User Provisioning Moodle me kaise kaam karta hai?** -> SSO identity provider se aane wale claims (Email, Name) ke basis par agar Moodle me user record na ho toh on-the-fly naya user account create kar dena.
2. **`is_internal()` method `auth_plugin_base` me kya declare karta hai?** -> Moodle database me password hashes store honge ya external remote server authenticate karega.
3. **Session Hijacking defense Moodle auth plugins me kaise enforce hoti hai?** -> User IP binding, browser user-agent hashing, aur periodic session rotation flags enable karke.

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**Next Topic:** 13. Enrollment Plugins (enrol/): Automated Course Enrollment, Webhook Triggers & Subscriptions

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Rishabh Gehlot

PHP 8+ & Laravel 11 Master Track