vtop-auth-lite 0.1.0

A lightweight, ONNX-powered session handshake utility for VTOP VIT Bhopal.

VTOP Session Handshake Utility

A lightweight, high-reliability automation utility for bypassing CAPTCHA-protected authentication on the VTOP portal.

Technical Overview

This utility performs an automated "handshake" with the VTOP VIT Bhopal (https://vtop.vitbhopal.ac.in/vtop/) server to acquire an authenticated session.

[!NOTE] This utility is designed and tested exclusively for the Student Login portal.

• Model and inference engine require only ~40-60MB of RAM, making it ideal for low-cost VPS and server-side deployment.
• 5-stage retry loop. On any failure, a hard reset is performed—clearing cookies, rotating User-Agents, and re-fetching the login page.
• Typical handshake takes 2.5 to 4 seconds depending on network latency.
• Designed as a library-first utility with a custom exception hierarchy for robust programmatic error handling.
• Since the ONNX model runs locally, the project has zero external API dependencies and requires no API keys.

Installation

1. Install Python 3.12+.
2. Install the package locally:

   pip install .
   

Integration

CLI Usage

Run the utility to acquire a session-active CSRF:

python -m vtop_auth_lite <USERNAME> <PASSWORD>

Programmatic Usage

from vtop_auth_lite.session import VTOPSessionManager
from vtop_auth_lite.auth import VTOPAuth

session = VTOPSessionManager()
auth = VTOPAuth(session)
if auth.login("username", "password"):
    # session is now authenticated
    res = session.fetch("GET", "/vtop/content")

Output:

• Success: Prints the 64-character CSRF Token.
• Failure: Prints a specific error code (e.g., AuthenticationFailedError) and exits with code 1.

Errors & Troubleshooting

Error	Cause	Solution
AuthenticationFailedError	Invalid credentials.	Verify your VTOP username and password.
CaptchaSolverError	AI inference failure.	Ensure model is inside vtop_auth_lite/models/.
NetworkConnectivityError	VTOP is down or blocked.	Check your internet; VTOP may be in maintenance.
UnexpectedError	Unhandled system crash.	Check handshake.log for a detailed traceback.

If you encounter a persistent breaking error, please submit an issue with the contents of handshake.log.

Repository Structure

• vtop_auth_lite/: The core package (Auth, Session, OCR, and ONNX models).
• pyproject.toml: Package build configuration.

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Developed for research, development, and educational purposes.