Another odd LZH from Atari ST

[aonez]

          Another odd LZH, from Atari ST

http://discmaster.textfiles.com/file/11869/www.umich.edu.archive.2014.03.zip/www.umich.edu/~archive/atari/Games/Puzzle/nanjin11.lzh

Originally posted by @gingerbeardman in #84 (comment)

[aonez]

@gingerbeardman just was taking a look at this file. It has some kind of Germanish wording before an unusual LZH signature.

I'm not sure if this is a variant of the format or just a corrupt one. Do you have any other example from the same site/provider?

[aonez]

This is what I can parse right now (not extract), removing the extra header info and fixing the LZH signature. But looking at it I can see there should be more contents.

[gingerbeardman]

If you browse using DiscMaster you'll see that it was able to parse the whole archive and it's all navigable and human readable, so it seems to be complete.

Here's a link to a different copy of the same LZH (hash matches):
http://discmaster.textfiles.com/browse/6694/CCE_PD.iso/pc/1000/CCE_1077.ZIP/CCE_1077/NANJIN11.LZH

DicMaster powered by Dexvert:
https://github.com/Sembiance/dexvert

Also, this is very low priority... I just mentioned it as a point of interest!

[gingerbeardman]

I don't have a working Atari ST setup with LHA/LZH decompressors... but:

After research: this file uses -lh5- encoding scheme see here

using brew install lha FAIL

$ lha x nanjin11.lzh
LHa: Error: Unknown level header (level 46)

using brew install lhasa GOOD
link

$ lha x nanjin11.lzh
nanjing/nanjing.app	- Melted   :  ooooooooooooooo
nanjing/doku/nanjing.doc	- Melted   :  oooo
nanjing/doku/nanjing.txt	- Melted   :  oooo
nanjing/guide/nanjing.hyp	- Melted   :  oo
nanjing/guide/nanjing.ref	- Melted   :  o
nanjing/nanjing.upl	- Melted   :  o

$ lha v nanjin11.lzh
 PERMSSN    UID  GID    PACKED    SIZE  RATIO METHOD CRC     STAMP          NAME
---------- ----------- ------- ------- ------ ---------- ------------ -------------
[generic]                53904  119645  45.1% -lh5- a554 Dec 12  1994 nanjing/nanjing.app
[generic]                 9361   25583  36.6% -lh5- 677f Dec 12  1994 nanjing/doku/nanjing.doc
[generic]                 9049   24999  36.2% -lh5- dbc2 Dec 12  1994 nanjing/doku/nanjing.txt
[generic]                13225   13467  98.2% -lh5- 3f74 Dec 12  1994 nanjing/guide/nanjing.hyp
[generic]                  467     809  57.7% -lh5- e6e7 Dec 12  1994 nanjing/guide/nanjing.ref
[generic]                  233     319  73.0% -lh5- f8ac Dec 12  1994 nanjing/nanjing.upl
---------- ----------- ------- ------- ------ ---------- ------------ -------------
 Total         6 files   86239  184822  46.7%            May  4 17:02

MacLHA on Macintosh System 7.5 complained but was able to extract it all.

[gingerbeardman]

I'm not sure if this is a variant of the format or just a corrupt one. Do you have any other example from the same site/provider?

Other fails from this folder: http://discmaster.textfiles.com/file/11869/www.umich.edu.archive.2014.03.zip/www.umich.edu/~archive/atari/Games/Puzzle/

[aonez]

Ok my bad, I was overlooking the extra header info. It actually is a comment, starting with -com- ending with a NULL byte and followed by the proper signature -lh5-:

-com-Nanjing 1.1, 12.12.1994, Shareware eingeschr�nkt, ein PiaG-Spiel
Bei Nanjing m�ssen 72 Steine, die sich durch Motiv und/oder Farbe
unterscheiden, auf ein 12 mal 8 Felder gro�es Spielfeld plaziert
werden. GEM-Spiel, lauff�hig als Accessory oder Programm.
Neu: 4-Steine-Regel gelockert, weniger Einschr�nkungen�)*-lh5-

Just removing the comment helps:
nanjin11_nocomment.lzh.zip

I'll check all the comment specifications (if I found them) to fix it properly.

[gingerbeardman]

Cool! Thanks.

Interestingly, the other fails are all -lh1- with no comment that I can see.

[aonez]

Interestingly, the other fails are all -lh1- with no comment that I can see.

Will check those, probably are older since the compression method 1 was used instead of the 5.

[aonez]

I was using 7ZZ for methods different than 4-7. Using UNAR instead now, and it will use 7ZZ as a failsafe:
Keka-v1.2.62.r5176

[aonez]

Also implemented the detection and proper parsing of the commented file in the build above.