WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

For decoding Customer ID

0000000 1111111 2222222 3333333 4444444 5555555 6666666 7777777 8888888 9999999
efgefge fghfghf ghighig hijhijh ijaijai jabjabj abcabca bcdbcdb cdecdec defdefd

Oh my, how did you conjure this up? Inside knowledge or just worked out the crypt?

Regards, Paul.

[Maxpower3]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Removing the password is trivial.

I took a file which has a password in it, and removed the string that occurs after the .G34S string and set the string length byte to 0. Now is readable in TeboView 4 without requesting the password.

For decoding Customer ID

0000000 1111111 2222222 3333333 4444444 5555555 6666666 7777777 8888888 9999999
efgefge fghfghf ghighig hijhijh ijaijai jabjabj abcabca bcdbcdb cdecdec defdefd

aaaaaaa bbbbbbb ccccccc ddddddd eeeeeee fffffff ggggggg hhhhhhh
3453453 2342342 1231231 0120120 9019019 8908908 7897897 6786786

iiiiiii jjjjjjj kkkkkkk lllllll mmmmmmm nnnnnnn ooooooo ppppppp
5675675 4564564 vutsrqp wvutsrq xwvutsr yxwvuts zyxwvut kzyxwyu

qqqqqqq rrrrrrr sssssss ttttttt uuuuuuu vvvvvvv wwwwwww xxxxxxx
ikzyxwv mlkzyxw nmlkzyx onmlkzy ponmikz qponmlk rqponml srqponm

yyyyyyy zzzzzzz
tsrqpon utsrqpo

First Number
0 e
1 f
2 g
3 h
4 i
5 j
6 a
7 b
8 c
9 d

a 3
b 2
c 1
d 0
e 9
f 8
g 7
h 6
i 5
j 4
k v
l w
m x
n y
o z
p k
q l
r m
s n
t o
u p
v q
w r
x s
y t
z u



75785zn
badcaps

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Anyone want to throw a theory on why some of the TVW files have this extended sort of header before the first labelled layer?

Seems there's a few occurrences of the 0 3 2 1 sequence in it.

This is the Gigabyte file that was attached in a slightly earlier post here in this thread.

[mmu]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Oddly the Gigabyte file didn't open in TeboView 4 even after stripping the password… But forcing the previous string to "G34…" stopped it from complaining about license :-)
Opened a PR with a python tool to strip the password.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Removing the password is trivial.

I took a file which has a password in it, and removed the string that occurs after the .G34S string and set the string length byte to 0. Now is readable in TeboView 4 without requesting the password.

[RethoricalCheese]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

https://www.badcaps.net/forum/showpo...&postcount=354

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Thanks for that - at least the outline renders on that one

[DerekChen65535]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

[RethoricalCheese]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Yeah, looks like these files were meant to be opened by boardviewer, not teboviewer.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

There are different teboview programs. The ones which are password protected in one, are not in the other one.

Which of the files had the password? I think I can send you the right program, which doesnt ask for password.

Boardviewer doesn't let the password stop it, but the official Teboview v4 does.

Lenovo\ Legion\ Y540-15IRH\ -\ NM-C221\ REV0.1\ Boardview\ /NS-C222.tvw

It's just more amusing that it's not really doing any real protection, and in honest though, I'm *glad* it's not.

On the upside, I've already worked out a few more of the header fields because of those new files, thanks.

[RethoricalCheese]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

There are different teboview programs. The ones which are password protected in one, are not in the other one.

Which of the files had the password? I think I can send you the right program, which doesnt ask for password.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Found something interesting, well, two things;

1) the loose 1-byte 0-value in the header sandwiched between two other strings is actually, as it should have been expected, an empty string. One of the new files I tried broke my parser and it was because there was a 3rd string in there.

2) Some TVW files are password protected when used in the official Teboview program, but the contents are not in any way encrypted that I can tell; it's akin to stopping people from getting in to an open space by placing a doorway in their face. Very interesting.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

HeLP - Need MOAR Teboview files. Gotten to the point now that I need more files of different sources so I can cross-check/differentiate various flags/bytes.

Big or small - you can email them to me if you prefer, pldaniels@gmail.com

[mmu]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Yay!

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Interestingly, our sample file had a more complicated outline routing system. There's some segments that are prefixed with 0x08 instead of 0x0A, and with those you read only 2 int32's after the tool int32, and there's no trailing 0-value uint32.

I'll add that in to the documentation later.

I'm sure there's other little traps like that out there but we'll find them in due time.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

I present to you... the very first image for TeboView decoder for FlexBV.

This is actually a board outline for the Lenovo X240 Yoga board.

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

I made the THREAD change on my own build.sh, so at least that's one file fixed

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Great, let me know if you need more.

Many thanks. I'll PM you in a bit after this.

Yeah, mingw works not too bad, I recall building VLC with it (quite slow though).
I think most of build.sh can probably be done right in CMake though.

Likely so - for me, it's a case of "It still works, I'm not going to break it"

I already proposed a patch in my Haiku PR. :-)

I saw that come through this morning - it'll likely be piernov who handles that as I am very much hands-off with OBV now. Put the years in to get it to a level and did the promotional work with/via Louis Rossmann, but after that is about when I forked off with FlexBV. I still push back things like file formats and bug fixes but aside from that I keep a fair distance now.

[mmu]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Thanks for the PR. I've already pushed in some small changes too (the 3-2-1 sequence appears to be a header/lead-in as opposed to a suffix).

All scrappy at the moment but it's definitely workable now for generating the source code.

Great, let me know if you need more.

As for OBV, the build.sh is meant for linux and macOS, we don't really build on windows any more because it was making the development cycle too slow and we ran in to show-stopper incompatibilities when working with gcc as well as VS that just made everything a nightmare. Subsequently the build for windows is just done on linux with mingw64; makes everything vastly easier when it comes to cross-platform development.

Yeah, mingw works not too bad, I recall building VLC with it (quite slow though).
I think most of build.sh can probably be done right in CMake though.

As for why the /proc/cpuinfo ... not sure what it's for, probably to determine the flags for the build within CMake.

Yes, it's a classic idom to detect the number of cores to do parallel builds, except it's very Linux-specific while there's a much simpler and portable method. I fixed this in MuseScore some years ago. I already proposed a patch in my Haiku PR. :-)

[inflex]

Re: WANTED: Teboview / TVW file format specification to write OpenBoardview decoder

Thanks for the PR. I've already pushed in some small changes too (the 3-2-1 sequence appears to be a header/lead-in as opposed to a suffix).

All scrappy at the moment but it's definitely workable now for generating the source code.

As for OBV, the build.sh is meant for linux and macOS, we don't really build on windows any more because it was making the development cycle too slow and we ran in to show-stopper incompatibilities when working with gcc as well as VS that just made everything a nightmare. Subsequently the build for windows is just done on linux with mingw64; makes everything vastly easier when it comes to cross-platform development.

As for why the /proc/cpuinfo ... not sure what it's for, probably to determine the flags for the build within CMake.