release Offline Shop Functionality: Bug Fix for Exploit Prevention

[Black_Rose©]

In this discussion, we will address an exploit found within the offline shop system, particularly regarding transactions involving high item values. This guide will help you implement a fix that ensures players don’t encounter issues when dealing with large amounts of currency in their offline shops.

Understanding the Exploit

The bug allows players to list items worth up to 120 billion yang in the offline shop. However, when another player purchases these items, the seller only receives a maximum of 2 billion yang, with any excess funds disappearing. This exploit needs to be addressed within the AddItem function to prevent further abuse.

A while back, someone reached out for assistance regarding this exploit, and I provided a fix at no cost. Unfortunately, that individual then profited substantially by selling my fix to others. To prevent this from happening again, I'm sharing this solution for free so everyone can benefit.

Implementation Steps

The following modifications will ensure the offline shop system operates securely and fairly for all players:

1. Modify service.h

Navigate to the file located at /Src/common/service.h. Add the following lines at the top of the file:

This is the hidden content, please

• Sign In
• or
• Sign Up

2. Update char.cpp

Now, open the file located at /Src/game/src/char.cpp. You’ll need to make adjustments in the relevant function.

Look for the section:

This is the hidden content, please

• Sign In
• or
• Sign Up

Replace it with this code:

This is the hidden content, please

• Sign In
• or
• Sign Up

 

With these adjustments, your offline shop should now effectively limit the amount of yang that can be handled, thus preventing the exploit from being utilized by players. This ensures a fair and stable game environment for everyone involved.