It’s either JSON / plaintext, or it’s a binary DAT file full of serialized C data structures dumped from the running game’s memory - aka a giant Rats Nest. :-D. I have my doubts that any of this will result in Code Execution due to bounds checking - but it only takes one bug!

47014 is full of ...

also what zip library are you using? the licenses page shows you have both minizip and zlib as dependencys

are zips like map files mod files and any outer zips ever exstracted to the filesystem anywhere or are they only ever exstracted in memory?

wait so if thats true why cant it just fix them automaticly by for exsample making condition C true or recounting the people in your exsample. also why does the game still crash in certen cases with a invalid save then eg the most commen one being trying to remove something in chunk x but marked ...

ik that the format of save files changes like every update (witch must leave behind a lot of convertson code) but id assume what eatch file in the save stores wouldnt change much. also do any of the files inside the save zip use compresson or anything like that? woundering for fuzzing once i start ...

A ton of things. Way too many to list here.


and the main point of the checks is to prevent bugs like null refrences, memory curruptson, overreads, and general unintended behavor correct?


Interesting angle, but I do not think you will get very far here towards modifying shared Game State ...

thanks for ansering these questons btw

Consistency checks are what ever we think is worth checking. The most common one being: we expect that if condition A and condition B are true, condition C should be true. Or things such as cached values always being equal to the computed values. It's not about memory corruption, overreads, or ...

Rseding91 wrote: Thu Aug 21, 2025 8:29 pm A ton of things. Way too many to list here.

and the main point of the checks is to prevent bugs like null refrences, memory curruptson, overreads, and general unintended behavor correct?

Rseding91 wrote: Thu Aug 21, 2025 7:55 pm It is not. It's assumed if the save is running the consistency check has already happened at load time and it should remain consistent during the runtime.

noted. and what gets checked durring the consistencey checks when they do run?

is save consistency checks perforemed when downloading and loading a map from a server? or can a server send a borked map and posibly cause more issues?

Biters seem perfectly fine with chilling on the pressure cooker world of Volcanus.

So are we though, even without any armor on, just a safety helmet. Biters seem a lot tougher than me...

For biters, the space survivability is really the only strange thing here. Well, obviously the hub has life ...

BrainGamer_ wrote: Mon Aug 18, 2025 5:33 pm the headless linux build can be downloaded by anyone? its freely available.

https://factorio.com/get-download/stabl ... ss/linux64

im talking about it but compiled with asan enabled. for fuzzing and vunerability reserch

hence why i created a new thread

The answer to this question since your last thread about this has not changed: https://forums.factorio.com/128425


Not likely.


to be clear: that thread was about adding it as a steam beta. and the resoning was 1. steamapi. and 2: they only build the linux builds with asan. this post is about ...

Given the state of this save file i suspect the electric networks that were orphaned were originally owned by the "trashsteroids" on the planet Rubia since they are implemented as vehicles with equipment grid that has shield equipment inside and i see there is a lot of those entities destroyed ...

now i know this probs isnt happening as yall are probs under ndas or something simaler but could i have a copy of the headless linix server for fuzzing. mainly fuzzing map files. any verson is fine. be it latest stable or latest build. whatever you perfer. (yes i know you can already fuzz like 100x ...

what librarys and versons of them do you use?

Factorio’s game Sandbox is required to get the same results on all Instances - else a Desync occurs due to cross-platform differences. So bringing all the Libraries in at Compile time eliminates an entire class of issues - it is always the same Assembly emitted for Math functions.


that makes ...

and whats the benifit of staticly linking i dont get it?