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Implement Frontend Infrastructure for Role & Authentication #21

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Copilot AI commented Aug 15, 2025 •
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This PR implements a comprehensive frontend infrastructure with role-based authentication for the SDLC Core system. The implementation provides a complete web-based user management system with secure authentication, granular access control, and a modern responsive interface.

Key Features Implemented

🔐 Authentication System

  • Secure User Registration & Login: Complete user account management with bcrypt password hashing
  • Session Management: Flask-Login integration for secure session handling
  • CSRF Protection: Built-in protection against cross-site request forgery attacks
  • Password Security: Strong password validation and secure storage

👥 Role-Based Access Control (RBAC)

  • 5 Default Roles: admin, user, moderator, analyst, developer with clear permission boundaries
  • Flexible Decorators: Easy-to-use @require_role(), @admin_required, @login_required decorators
  • Runtime Permission Checking: Dynamic role validation in both templates and backend views
  • Multi-role Support: Users can be assigned multiple roles for complex permission scenarios

🌐 Modern Web Interface

  • Responsive Design: Bootstrap 5 framework with mobile-first responsive design
  • Professional UI: Clean, modern interface with icons, animations, and intuitive navigation
  • User Dashboard: Comprehensive profile management with role information and quick actions
  • Admin Panel: Full-featured administrative interface for user and role management

🔌 REST API Endpoints

Complete API implementation for programmatic access:

  • POST /auth/api/login - User authentication with JSON response
  • GET /auth/api/user/profile - User profile information
  • GET /api/admin/users - User management (admin only)
  • GET /api/admin/roles - Role management (admin only)

All endpoints include proper HTTP status codes, error handling, and JSON responses.

Technical Implementation

Architecture

The implementation follows Flask's application factory pattern with modular components:

from src.frontend.decorators import require_role, login_required

@require_role('developer')
def deploy_agent():
    # Only developers can deploy agents
    pass

@require_role('analyst') 
def generate_report():
    # Only analysts can generate reports
    pass

Database Models

  • User Model: Handles authentication, profile data, and role relationships
  • Role Model: Defines available roles with descriptions
  • UserRole Model: Many-to-many relationship mapping for flexible role assignment

Security Features

  • ✅ Bcrypt password hashing for secure password storage
  • ✅ CSRF token protection for all forms
  • ✅ Secure session management with Flask-Login
  • ✅ Server-side role validation for all protected routes
  • ✅ Configurable security settings for different environments

Screenshots

Home Page

Home Page

Login Interface

Login Page

User Dashboard

Dashboard

Admin Panel

Admin Panel

Quick Start

# Install dependencies
pip install -r requirements.txt

# Start the application
cd src/frontend
python app.py

# Access at http://localhost:5000
# Default admin: admin / admin123

Integration Ready

The frontend infrastructure is designed for seamless integration with existing SDLC Core components. It provides authentication decorators that can be used throughout the system to protect LLM endpoints, agent deployments, analytics functions, and other sensitive operations based on user roles.

The system includes comprehensive documentation (src/frontend/README.md and FRONTEND_INTEGRATION.md) with examples for integrating authentication into existing components.

Fixes SoftwareDevLabs/frontend#4.

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@vinod0m
Implement complete frontend infrastructure with role-based authentica…
b591805 
…tion

Co-authored-by: vinod0m <221896197+vinod0m@users.noreply.github.com>
github-advanced-security[bot]
github-advanced-security bot found potential problems Aug 15, 2025
View reviewed changes
src/frontend/auth.py
next_page = url_for('main.dashboard')

flash('Logged in successfully!', 'success')
return redirect(next_page)

Check warning

Code scanning / CodeQL

URL redirection from remote source Medium

Untrusted URL redirection depends on a
user-provided value
Loading
.

Copilot Autofix

AI 5 months ago

To fix the open redirect vulnerability, we need to ensure that the next_page parameter cannot be used to redirect users to an external site. The best way to do this is to use Python's urllib.parse.urlparse to parse the next_page value, and only allow the redirect if both the netloc and scheme are empty (i.e., it's a relative path). Additionally, we should remove any backslashes from the input, as browsers may interpret them as forward slashes. The fix should be applied in the login function, specifically where next_page is validated before being passed to redirect. We will need to import urlparse from urllib.parse at the top of the file.

Suggested changeset 1
src/frontend/auth.py

Autofix patch

Autofix patch
Run the following command in your local git repository to apply this patch
cat << 'EOF' | git apply
diff --git a/src/frontend/auth.py b/src/frontend/auth.py
--- a/src/frontend/auth.py
+++ b/src/frontend/auth.py
@@ -4,6 +4,7 @@
 import os
 from datetime import datetime
 from flask import Flask, Blueprint, render_template, request, flash, redirect, url_for, jsonify, current_app
+from urllib.parse import urlparse
 from flask_login import LoginManager, login_user, logout_user, current_user
 from flask_migrate import Migrate
 from flask_wtf.csrf import CSRFProtect, validate_csrf
@@ -81,7 +82,13 @@
             db.session.commit()
             
             next_page = request.args.get('next')
-            if not next_page or not next_page.startswith('/'):
+            # Sanitize and validate next_page to prevent open redirect
+            if next_page:
+                next_page = next_page.replace('\\', '')
+                parsed = urlparse(next_page)
+                if parsed.netloc or parsed.scheme:
+                    next_page = url_for('main.dashboard')
+            else:
                 next_page = url_for('main.dashboard')
             
             flash('Logged in successfully!', 'success')
EOF
@@ -4,6 +4,7 @@
import os
from datetime import datetime
from flask import Flask, Blueprint, render_template, request, flash, redirect, url_for, jsonify, current_app
from urllib.parse import urlparse
from flask_login import LoginManager, login_user, logout_user, current_user
from flask_migrate import Migrate
from flask_wtf.csrf import CSRFProtect, validate_csrf
@@ -81,7 +82,13 @@
db.session.commit()

next_page = request.args.get('next')
if not next_page or not next_page.startswith('/'):
# Sanitize and validate next_page to prevent open redirect
if next_page:
next_page = next_page.replace('\\', '')
parsed = urlparse(next_page)
if parsed.netloc or parsed.scheme:
next_page = url_for('main.dashboard')
else:
next_page = url_for('main.dashboard')

flash('Logged in successfully!', 'success')
Copilot is powered by AI and may make mistakes. Always verify output.
@vinod0m
Complete frontend infrastructure implementation with documentation an…
13f0526 
…d integration guide

Co-authored-by: vinod0m <221896197+vinod0m@users.noreply.github.com>
Copilot AI changed the title [WIP] Setting up Frontend Infrastructure for Role & Authentication Implement Frontend Infrastructure for Role & Authentication Aug 15, 2025
Copilot AI requested a review from vinod0m August 15, 2025 22:33
@vinod0m vinod0m closed this Aug 19, 2025
@vinod0m vinod0m deleted the copilot/fix-3 branch August 19, 2025 13:09
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Setting up Frontend Infrastructure for Role & Authentication

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