Email image parsing failed (cid, mimeDecode)

[changyy]

Prerequisites

• Can you reproduce the problem in a fresh installation of the "develop" branch?
• Do you have any errors in the PHP error log, or javascript console?
• Did you check the osTicket forums?
• Did you perform a cursory search to see if your bug or enhancement is already reported?

For more information on how to write a good bug report

Description

Recently, we upgraded our osTicket system to v1.18.1 and are utilizing a PHP 8 environment. We've observed some issues with the processing of certain emails, such as abnormalities with emails that display images using cid. We've conducted tests in a clean environment built with Docker, and the issue persists both in v1.18.1 and the develop branch.

For the Docker environment, please refer to: https://github.com/changyy/osticket-study

This issue is reproducible. It only requires sending an email via Gmail and attempting to attach an image.

Furthermore, I have researched the underlying logic of osTicket's email processing and will soon submit a Pull request to address this issue.

Steps to Reproduce

1. Use Gmail
2. Mail Subject: Test from gmail
3. Mail Body:

Hello,

image:
[image]

thanks

Expected behavior: [What you expected to happen]

http://localhost/scp/tickets.php?id=# reads images from the website.

Actual behavior: [What actually happened]

Versions

Admin panel -> Dashboard -> Information which also additionally gives you information about your server.

Also, please include the OS and what version of the OS you're running. As well as your browser and browser version.

[changyy]

Fix for getRawmail() in class.mail.php (#6683)