DDraceNetwork - developer

DDraceNetwork

Development / developer

Development discussion. Logged to https://ddnet.tw/irclogs/ Connected with DDNet's IRC channel, Matrix room and GitHub repositories — IRC: #ddnet on Quakenet | Matrix: #ddnet-developer:matrix.org GitHub: https://github.com/ddnet

Between 2021-04-17 00:00:00Z and 2021-04-18 00:00:00Z

lol im watching this chess match

00:01

pawn a3 when

dont tell moves

ah nice u can watch

its disrespectfull

troll

watch here https://lichess.org/ewZef4ZM

Rapid (10+8) casual Chess • Challenge from Ryozuki (931?)

Join the challenge or watch the game here.

chill

00:01

ok iw ont tho

PES_SusThink

king d5 when

00:02

??

lol ryo tryhard over 500 games

i play on the metro every other day

louis writes in german xd

i cant see chat

@Ryozuki i stole some things from ddnet.tw/news it says a mod has to check it?

added

need to get some people in there

00:11

suddenly i cant remember a thing

xd

DDNet Beginnings
Megaman had already rented a virtual server, but didn't know how to set it up. So I took over this aspect, implementing what we discussed in our group of 4: Megaman, Delo, .me' and I. We started out with just a few maps by .me' and Megaman. I'm not a mapper myself, so it's lucky that all the other 3 DDNet founders were. We also had a deal with Hitomi to host a server for him with his maps, among them of course the extremely popular HellGate series.

00:16

Image attachment

"Aoe vs hi_leute_gll drama" where xd

https://forum.ddnet.tw/viewtopic.php?f=3&t=2748&p=29591&hilit=Aoe+hi_leute_gll#p29591

00:18

xd

gg anonymous

damn

00:18

played that like shit

oh it was u?

00:18

u missed my rook?

rip anonymous

the end was ok

I misclicked there at the end

the beginning was too loosy xd

stupid move with the queen

@Ryozuki 1v1 me later

00:18

i lost against u before now i must redeem

also need that one time when some mods made an open letter agains deen. that was cringe but i cant remember what happened

louis

@Ryozuki 1v1 me later

"later" mate its 2 am

<BµmM>

https://forum.ddnet.tw/viewtopic.php?f=3&t=2748&p=29591&hilit=Aoe+hi_leute_gll#p29591

ty xd

yeah we should play sometime when it's not pitch black outside

00:19

wp

@<BµmM> aoe deleted his video about hi leute i think

qE1 was such a blunder at the end

Image attachment

00:20

i made 6 blunders

00:20

u made 7

00:20

xd

LOL qE1 was +12

00:20

stockfish is like ?????

00:21

yeaaah damn I wanted to do either qf1 or bxd7

00:21

...

Ryozuki

"later" mate its 2 am

no its 7:22 pm PepeLaugh

PepeLaugh

5:22 pm

00:28

well 5:28 now

[ddnet-maps:master] 1 new commit

d5ef0f5 A Examinus - ddnet-maps

lmao drama in the timeline Ryozuki

[ddnet-web:master] 1 new commit

6fbd3fb Best of Three tournament - def-

Yo anyone of you leet haxx0rs have good resources on getting into binary edits? Maybe our NSA supporter @Learath2? I wanna extend/edit some closed src software. Turns out its harder than objdump + paste in some blob and reassemble :D

[ddnet-scripts:master] 1 new commit

c8fa88f Update tournament preparation - def-

Are you patching or inserting new code?

[ddnet-web:master] 1 new commit

3b501bd Saturday -> Sunday - def-

11:32

[ddnet-web:master] 1 new commit

5fa54b6 First finish - def-

I was thinking about inserting new code. I think by patching you refer to in place edits without changing the length of the program. As far as I understood thats what an machine language guru can do easily with a hexeditor.

13:50

But I was more after getting some hooks in place where I can write some C code or something like that. Well idk thats why I ask for a starting point :D

[ddnet/ddnet] Issue opened: #3774 IP address parser accepts invalid IP addresses

Examples: "127.0.0.1a" "127.0.0.1:1a"

what do you want to achieve in the end?

13:55

frida is an interesting tool that lets you hook functions

13:55

https://frida.re/

Frida • A world-class dynamic instrumentation framework

Inject JavaScript to explore native apps on Windows, macOS, GNU/Linux, iOS, Android, and QNX

13:56

chillerdragon[m]: ^

thanks

13:56

I just want to mess around with closed src software I am forced to run to see how much I feel better when I manage to do basic edits

yea, sounds like frida can help you achieve what you want

frida is very cool indeed, but if you want to insert assembly it is some work and idk if any tools exist to help you with it

true. with frida you can instead insert JS though, I used it to patch some RE challenge file

13:58

was quite easy

[ddnet/ddnet] Issue opened: #3775 RFC: net_addr_str should format IPv6 addresses in short canonical form

[::1] instead of [0:0:0:0:0:0:0:1]. What do you think?

The simplest way to actually insert assembly into a binary is to find a "code cave" somewhere already executable where you can fit your chunk and jump to it by some means

14:01

If you don't find one large enough you need to fiddle around with adding a new executable section to it which wasn't a fun experience the last time I tried

I'm not sure I'd call it the easiest way though (when inserting code). I think I find frida easier there

Oh definitely, I meant easiest way to insert a chunk of native bytecode

14:03

I guess you could use frida to do that too at runtime now that I think about it

14:04

Yeah, just place your bytecode somewhere in memory, mark it executable with mprotect and call into it

14:05

Or just compile it into a shared library and dlopen it to reduce the annoying things you have to worry about

or LD_PRELOAD

[ddnet/ddnet] Pull request opened: #3776 Fix parsing an IPv6 address without port

The port in the NETADDR struct was left uninitialized. Add some tests to ensure behavior. CC #3774 #3775

Checklist

[ ] Tested the change ingame
[ ] Provided screenshots if it is a visual change
[ ] Tested in combination with possibly related configuration options
[x] Written a unit test if it works standalone, system.c especially
[ ] Considered possible null pointers and out of bounds array indexing
[ ] Changed no physics that affect existing maps
[ ] Te...

oh no need to insert assembly I am not trying to be as cool as possible but more like gaining control over closed src software in the easiest way possible. Like trying to add simple features or something. I will probably rage quit trying but whatever :D

14:12

I always wonder how there are modding communities for closed source games

well modding communities usually either rely on a modding framework already being there, or atleast a scripting framework in the game that is for the gameplay people to make things without needing to know to program

right but i feel like these modding frameworks are often community built arent they?

14:21

So I was wondering maybe there is some workflow on how to create such a framework. But anyways im currently looking into frida and it looks cool :)

If they are using a scripting framework that's not exposed yes, usually some pioneers will by looking at how the scripting hooks into the engine create their own framework. An example of this is Cleo for GTA San Andreas

14:23

but there are games where there is an official framework for modding, like witcher 3 or skyrim

Interesting so witcher team wanted their game closed but still support the modding community

@Learath2 mind if I typedef std::unique_ptr<sqlite3, CSqliteDelete> CSqlite3?

14:24

what should its name be?

If you look at even older games, where disk space and memory space was at a premium (think gameboy era) there it starts to become black magic to me how people managed to dissect these old games to create so much tooling to mod them. Look at GBA era pokemon if you want to see some of that magic

heinrich5991

what should its name be?

Eh, I think that's fine, but would that not be a one off anyway?

I feel like I miss out some things being in the tw open source bubble

@Learath2 I was thinking about making it an IStorage function. maybe that's more controversial? ^^

Eeeeh?

OpenFile, OpenDb/OpenSqlite3

Mh, I don't think this fits in the scope of IStorage. Atleast not how I conceive it

since you can only open sqlite3 dbs by path, you'd have to extract the full path from IStorage to get a DB

When I think of Storage (in terms of teeworlds) I really only think of files. Though maybe we could extend the concept? But I think it's scope is fine

heinrich5991

since you can only open sqlite3 dbs by path, you'd have to extract the full path from IStorage to get a DB

Why not just ask IStorage for the path using GetPath?

I can do that, but I thought this was the abstraction that is wrong

14:28

I think that was a quick ddnet hack because something didn't quite work

Hm, I guess an argument could be made that no paths should leave CStorage

14:29

How about having IStorage open the file and pass that file handle along to sqlite?

that's the thing that doesn't work. sqlite3 needs a path

14:29

sqlite3 wants to create temporary files near the db

Meh, that's overreach by sqlite, but I get it

14:30

I think GetPath is the better way to do this than to make storage aware of some database implementation

k

I really want to re-do storage some day btw, it's quite a mess right now

[ddnet/ddnet] Issue opened: #3777 Move generated files to src/generated instead of src/game/generated

They're not really game-specific anymore, and Teeworlds also has it in that location.

[ddnet/ddnet] Pull request opened: #3778 Fix composed binds. Close #3771

This fixes the issues for the meanwhile, but I think I want to rewrite this. We are kind of wasting memory and it behaves really oddly with multiple binds that match the chord progression. Fixed #3771 for now. @fokkonaut please check

Checklist

[x] Tested the change ingame
[ ] Provided screenshots if it is a visual change
[ ] Tested in combination with possibly related configuration options
[ ] Written a unit test if it works standalone, system.c especially
[x] Cons...

[ddnet/ddnet] Pull request opened: #3779 Copied Teeworld patches for the Haiku operating system

I initiated a port of ddnet and received a lot of help from the IRC in order to do so as seen in #2986. Unfortunately, my efforts went stale after one point. Fortunately, however, @threedeyes released a set of patches for Teeworlds. I decided to take down my repository with my own work and attempt to port Gerasim's work, which includes code for sett...

I think I'm going mad

16:53

Something was working, I rebased something that should have been failing before but wasn't suddenly broke. I rebased again and it happened again

sounds like you having a fun saturday

[ddnet/ddnet] Issue opened: #3780 Can we Save player's state during ddos, And restore after ddos end

Now after the ddnet server is hit into the black hole by ddos, the players who are playing cannot timeout back after the black hole ends, because the black hole time is too long. I have an idea, during the black hole, can I send SIGTSTP to the ddnet-server process (just like ctrl + z), and then use the fg command to recover after the black hole ends. I also thought about dumping the memory and immediately recovering it on another machine, but this is probably more difficult. Or dump the ...

GitHub

Click to see attachment 🖼️

I open a new issue about restore players' state after ddos. Will this be difficult to achieve?

enable /r :D

17:51

detecting server lack and pausing game is actually an interesting idea. Might be a bit messy tho

17:51

"lack"

enable /r is not enougt as i think xd. I think the most easy way is set the duration of Timeout Protection over to be long enough. Or change the way of trigger Timeout Protection over.

17:56

but now it seem that the maxium of "conn_timeout_protection" is 10000 second which is not enough for this kind of situation

It's cool if you can implement this but ddos attacks can be unpredictable. I'm not trying to bash your idea, it's a good idea. However, Ddos attacks you want to prevent as far upstream as you can. I get we are on a budget but yeah.

17:57

What happens when you suspend while someone is hammer flying and it's a faily part? They fall and die? (edited)

SPYRES

What happens when you suspend while someone is hammer flying and it's a faily part? They fall and die? (edited)

yeah it is hard to deal with that kind of situation. but i think when ddos begin, player should know they should stay in a safe place

P.s I doubt most players are doing faily maps when ddos happens and those who do can probably get there fast anyways

18:02

If they in a team they can /save quickly. I guess your idea is more focused to team0?

we could extend timeout protection automatically when a dos is happening

SPYRES

If they in a team they can /save quickly. I guess your idea is more focused to team0?

yes, caz in chn server, we anyway play in a big team0 xd

deen

we could extend timeout protection automatically when a dos is happening

thx! that would be a good idea

@Eki keep the ideas flowing!

heartw

[ddnet:master] 2 new commits

8d6b62d Fix parsing an IPv6 address without port - heinrich5991 b53929e Merge #3776 - bors[bot]

18:15

[ddnet/ddnet] Pull request closed: #3776 Fix parsing an IPv6 address without port

[ddnet:master] 2 new commits

6c02076 Copied Teeworld patches for the Haiku operating system - panos 6572f9e Merge #3779 - bors[bot]

18:24

[ddnet/ddnet] Pull request closed: #3779 Copied Teeworld patches for the Haiku operating system

18:25

[ddnet/ddnet] Pull request opened: #3781 Only use correct clang-format version

Checklist

[ ] Tested the change ingame
[ ] Provided screenshots if it is a visual change
[ ] Tested in combination with possibly related configuration options
[ ] Written a unit test if it works standalone, system.c especially
[ ] Considered possible null pointers and out of bounds array indexing
[ ] Changed no physics that affect existing maps
[ ] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--u...

[ddnet-web:master] 1 new commit

b478712 Add M|aria. - Learath2

@heinrich5991 I'm about to call the cops on clang-format

[ddnet-web:master] 1 new commit

55afe42 Remove Pipou - Learath2

@Learath2 what went wrong?

Pipue changed gender and is now maria

Figured it out, it wouldnt work while rebasing for some reason

[ddnet:master] 2 new commits

f867d9c Only use correct clang-format version - def- 4cb65aa Merge #3781 - bors[bot]

19:55

[ddnet/ddnet] Pull request closed: #3781 Only use correct clang-format version

[ddnet-scripts:master] 1 new commit

5e492c8 Also provide license and storage files in updater - def-

Exported 154 message(s)