UUPMediaConverter doesn't cleanup after itself after SIGINT

[kwvg]

Description

UUPMediaConverter stores its in-progress files in %Temp% by default (configurable with temp-path). If the program is run and then sent a SIGINT signal (say, by using Ctrl+C), the application immediately exits without cleaning after itself. This results in multi-gigabyte directories that fill up temp-path.

If this is repeated enough times (twice in my case), temp-path will exhaust the partition's space, preventing the program from proceeding any further.

Possible solutions

SIGINT gives the program a chance to shut down the program gracefully, so perhaps in a shutdown sequence, the temporary files are deleted unless a flag is set that retains them (say, --retain-temp-files). This will not account for SIGKILL terminations, as by nature, they don't give the process a chance to do anything.

So, additionally, perhaps the directory in temp-path can be ear-tagged with a GUID generated at runtime and a retention flag. If the flag is present, leave the examined directory alone, create a new directory and proceed. If the flag is absent, the GUID wouldn't match and the directory can be deleted.

Steps to reproduce

• Open Command Prompt as Administrator and navigate to working directory
• Download any UUP
• Generate an image for any UUP, press Ctrl+C anytime midway
• Repeat the last step and see the drive space reduce

Additional Notes

• System Information

  • Operating System: Windows 10 22H2 19045.3448
  • Shell: Command Prompt
    • Administrative Privileges: Yes
  • Virtualized: Yes
    • Host: Linux
    • Platform: VirtualBox 7.0.10 r158379
      • Guest Additions: Yes
      • Extension Pack: Yes

• Program Information

  • Version: 3.1.8.0
  • Architecture: AMD64 (x64)

• Consider defining the minimum amount of space needed to store temporary files and adding an init-check that bails out if it doesn't meet that minimum. Doesn't have to be exact, just a gigabyte or two above the average expected size.