[Heroes] [ heroes-Bugs-444576 ] saved game records too easy to fake

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Bugs item #444576, was opened at 2001-07-25 12:49
You can respond by visiting: 
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Category: misc. run-time
Group: wish
Status: Open
Resolution: None
Priority: 5
Submitted By: Nobody/Anonymous (nobody)
Assigned to: Nobody/Anonymous (nobody)
Summary: saved game records too easy to fake

Initial Comment:
In Level 70, all vehicles are restricted to a 
two "game square" vertical line. I believe someone 
else has mentioned about it on the mailing lists.

Also, I had found the savegame files to be VERY 
editable. One could go into the savegame file and 
change his/her next level, and number of lives...

...even the number of points! If there was some way to 
recompile the savegame file in a different way...

I found this out so far:
First line: First numeral- Level. Second numeral- 
Points. Third numeral- Lives.
Second line: I don't know what the heck this is.
Third line: The savegame's "slot name".

On the other note, I would've almost added a complaint 
about the editor bug/missing sound but you've fixed 
that on the Win32 re-release.

and Yes, I'm using win32, the problem seems to be with 
the DATA. All we need is some ramps, think I could 
volunteer to fix this?

-Psychopheles. Too lazy to login.

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Comment By: Nobody/Anonymous (nobody)
Date: 2002-11-27 15:10

Message:
Logged In: NO 

This bug is too antiquidated -- KILLME.

-psychopheles

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Comment By: Alexandre Duret-Lutz (adl)
Date: 2001-07-27 09:10

Message:
Logged In: YES 
user_id=49307

Thanks for the details.

Let's keep this open as a remainder until a checksum is
added to the saved game records, then.


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Comment By: Nobody/Anonymous (nobody)
Date: 2001-07-27 08:57

Message:
Logged In: NO 

Right in July 22, I believe, I had downloaded Heroes for 
the first time. For some strange reason, when I added the 
music and sound to Heroes, they did not play. Before that, 
I had decided to give the Editor a try, but I looked at the 
readme when you mentioned about a mouse. There was no 
cursor!

The next day after (I believe) I had re-obtained the main 
game and data. I believe that was the same time you re-
released the Win32 distribution, and I had gotten sound.

Maybe it was compiled the wrong way, but I don't know. 
Everything seems to work right now, so I'm not 
complaining. :)

-psychopheles, not logged in, and thinking this should be 
deleted.

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Comment By: William Black (psychopheles)
Date: 2001-07-26 05:19

Message:
Logged In: YES 
user_id=195616

This complaint subject to detonation at any time by the 
devel's.. heroes-data 1.3 fixes this..

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Comment By: Alexandre Duret-Lutz (adl)
Date: 2001-07-26 01:45

Message:
Logged In: YES 
user_id=49307

1) Level 70

Many thanks for reporting this.  Jean Delvare reported the
same thing in December 2000, but all I missed was the level
number in which this was occuring.

I've fixed this level, and released heroes-data-1.3 with
this fix.  I hope to release the associated win32 package
tomorrow (no promise).

(actually that wasn't missing ramps, but wrong starting
positions)

2) saved games

One point is that the game is open source.  So whatever the
format I save the game width, it won't be a secret: if they
want to teak their records, people just have to look at the
code to know the file-format.  Given this, I've chosen plain
text file because that easier to debug.

I'm considering adding a checksum at the end of the file, to
prevent direct modification of the saved records.  But
that's not a silver bullet, there is no silver bullet.

3) editor bug/missing sound

I understand what you mean by `missing sound' (I messed the
0.12-1.mingw32 build: SDL_mixer was not linked in), but not
the `editor bug'.  What's wrong with the editor?

Thanks

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