LZMA self extractor

[Giovanni]

It is possible to create a non-working self-extracting LZMA zip file.

Steps to reproduce:

- Set "LzmaAllowed=1" in "Packer" section of wincmd.ini
- Create a .zip file with compression level of 10
- Rename file (Shift+F6) from .zip to .exe
- Select "Yes" to TC prompt of "Create self extracting ZIP file?"
- Resulting EXE is unusable

Note that this is documented in History.txt:

04.02.09 Added: Turn off LZMA compression if user creates self-extracting archive (SFX cannot handle LZMA)

IMHO, TC should either check the zip file compression method or give a warning.

[MVV]

SFX stub don't understand LZMA yet.
You may unpack this archive by Alt+F9 or Ctrl+PgDn - TC just ignores SFX stub.

Of course, you may open this archive with any popular archiver (i.e. 7-Zip) which handles LZMA.

But I agree with you, TC should check if zip archive has LZMA format before appending SFX stub. Or SFX should support LZMA

[ghisler(Author)]

This is a known limitation, sorry. It would be too slow to check the entire archive whether it contains unsupported methods like LZMA or encryption. The user can still access the data by renaming the file back to *.zip or opening the exe with Ctrl+PageDown.

[Clo]

2MVV

Hello !

… Or SFX should support LZMA

• I would support this solution as a suggestion…
- Maybe somebody could write such an alternative <SFXHEAD.SFX> ?

 KR
Claude
Clo