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 2021-11-02 00:00:00Z and 2021-11-03 00:00:00Z

How do you guys punch your NAT's ? :D I use some ssh tunnel with autossh from some NAT client to my vps and then i can connect over my vps to that client. But it seems to die from time to time and then keep the port blocked so it can not be reestablished.

echo "ServerAliveInterval 60" >> ~/.ssh/config might help

as a backup, all my ssh servers are available as tor hidden services

10:55

that way, they are always reachable as long as they're somehow connected to the internet

I don't punch them, just forward the ssh port in router

anyone round

hi SaintsDB

hey i emailed u

yes, I responded

lol playing on my phone ill go chk

its been fine for roughly 45 daysish

yikes routers

14:51

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14:52

i built a github chrome extension showing the stars of forks in the network tab. Can be useful to find good downstrea projects for example when the upstream got archived or similar.

14:52

if you are interested you can pre order the extension now!

14:52

wait wtf that looks broken what is the 20 next to ddnet/ddnet xd

14:53

oops it shows watching not stars lemme fix

the number of people watching

ye fixed

14:54

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14:54

here u go

14:55

i assume ahead or behind upstream is also interesting

Should sort by stars

yea

15:00

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15:00

i am such a UI genius

chillerdragon

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so proud

15:20

Should hire you for UI design.

ikr

15:23

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15:23

fixed it :)

[ddnet/ddnet] Issue opened: #4277 heap-use-after-free in CDragger::Drag

``` ================================================================= ==3885397==ERROR: AddressSanitizer: heap-use-after-free on address 0x6210000a7930 at pc 0x00000057ad40 bp 0x7ffce649dea0 sp 0x7ffce649de98 READ of size 8 at 0x6210000a7930 thread T0 #0 0x57ad3f in CDragger::Drag() /home/teeworlds/src/master/src/game/server/entities/dragger.cpp #1 0x57b7c1 in CDragger::Tick() /home/teeworlds/src/master/src/game/server/entities/dragger.cpp:159:2 #2 0x5e187e in CGameWorld::Ti...

now automatically find the branch that has most +diff

15:26

longest fork chain too

15:27

for +diff, the most lines changed

15:27

xd

15:27

then you can sell it xdd

:D

does anyone other than me even miss this feature?

[ddnet/ddnet] Pull request opened: #4278 Try to fix CDragger's heap-use-after-free (fixes #4277)

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...

What would be the best way to get fontsize of teeworlds in the server code?

19:21

A static table of widths and heights?

19:21

for each letter

19:23

well, maybe i dont need the best/cleanest way, but one that will easily work without many libraries or so

"Assembly is actually a high level abstraction"

Image attachment

19:37

monkalaugh

when you are at the level of that guy, assembly is indeed high level

ye

19:42

https://www.youtube.com/watch?v=XH0F9r0siTI

DEFCONConference

DEF CON 26 - Christopher Domas - The Ring 0 Facade Awakening the P...

19:42

this the vid btw

I watched it a couple times by now

ur a pro watcher

19:47

poggers

I just have a lot of free time as a failed human being

feelsbadman

If u have a lot of free time add 0.7 support to the client :p

sorry, can't work while depressed

19:51

maybe next month if my brain decides to allow me some serotonin

just watch anime

19:52

and if u watched all good anime there is, read manga

19:52

im on the second stage

I was going to watch kimi no na wa tonight, or maybe violet evergardens movie

19:53

Or I could read witch hat atelier, but not really in the mood for that

u know one movie that fits better than those is Byousoku 5 Centimeter

19:53

for me the best movie of this kind as of now

19:53

xd

Hm, that is on my watchlist too

definitly better

19:53

u can actually feel identified somewhat

I was going to get the manga for that, but people told me the film is better

ye movie movie

19:54

i watched it 3 times already

19:54

brb food

"Takaki Tōno's life and his relationships with the girls around him. "

How am I supposed to identify with that lmao. Please, I've been programming since I was 12

19:56

They really should make it illegal to touch computers until you are 18

Ryozuki

"Assembly is actually a high level abstraction"

i agree that asm is high level. It's still being processed on and interpreted to something specific for that HW.

This definition of high level is not very useful. I think the only way one is supposed to talk about this is in relative terms

20:00

ASM is higher level than bytecode indeed. It's also lower level than many other languages used currently

yeah high level just really means it's "floating" (as in some sort of abstraction) over the hardware

Anyway, this is too on-topic, you are supposed to use the on-topic message as a branching point to something completely off-topic

if you're like manually moving wires around on a bread-board or using something like verilog, that's low level i guess

20:02

or no level? idk

20:02

yeah that's right we are getting high in the developer chatroom

"floating" isn't really a useful definition to me is my point, if all languages are high level then there is no use to the definition

honestly high level low level etc isn't useful at all either

20:03

it's just an abstraction from talking about anything real

Saying C and C++ are relatively low level to what is thought today is fairly useful to talk about

the truth is, you could write hardware that only accepts Rust or something, transforming that directly into HW related stuff

20:06

but yeah i guess it's all a general purpose case

I'll go get some food and sit on the floor, night

I think the more practical case, that is slightly off the normal case, is asm can be high level when you consider IRs like llvm

20:07

alright good night

Learath2

"Takaki Tōno's life and his relationships with the girls around him. "

How am I supposed to identify with that lmao. Please, I've been programming since I was 12

thats exactly why u should watch it

20:16

its a movie about regretting your past

20:16

it has 3 stories btw

20:16

iirc

20:16

or 3 arcs

20:16

*

20:19

@Learath2 btw its by the same director as kimi no na wa

20:19

Shinkai, Makoto

20:19

truly a mastermind on anime movie making

fokkonaut

What would be the best way to get fontsize of teeworlds in the server code?

:D

set it manualy

20:28

monkalaugh

@Learath2 I really liked kimi no na wa

poggers

Supposedly if you don't cry while watching it you aren't human

lol i didnt cry

21:12

@Learath2 there is a anime movie about suicide

21:12

"Colorful"

21:12

i liked it

21:13

kinda a hidden gem

Ryozuki

lol i didnt cry

you are probably a psycopath

https://myanimelist.net/anime/8142/Colorful_Movie

21:13

hard to cry with a 1-2 hour thing

21:13

clannad is better

violet evergarden was quite nice if you are looking for something emotional

i seen it

21:14

its beautifuly animated

21:14

but idk thats it

21:14

the only movie that made me go to bed thinking hard is 5 centimeters

the music is great too imo

21:14

grave of the fireflies is also supposed to be good, didn't watch yet

oh

21:14

it is definitly good

21:14

i seen it

21:15

there is one even more obscure than it

21:15

barefoot gen

21:15

holy shit

21:15

if u dont like old movies then pass it

21:15

but its good

21:15

(83')

21:15

https://www.youtube.com/watch?v=fpAgmvjJCtI

21:15

its on youtube

21:15

they dont take it off

21:16

beware there is some horrifying scenes

ah you know what I'll do, I'll finish up squid game before starting anything else

atomic bombs are not good looking after all

21:16

im addicted to japanese anime movies about the atomic bomb

21:16

there is a 3rd i dont remember

21:17

In This Corner of the World

21:18

Kono Sekai no Katasumi ni

Ryozuki

but idk thats it

wth

21:22

violet evergardn much more sad than your name

21:22

and better imo

tbh i didnt find your name sad at all

21:23

Byōsoku Go Senchimētoru is superior

21:23

greenthing

idk about much sad animes but i watched some and they were all pretty dull except v. evergarden and your lie in april

you didn't watch clannad + clannad 2

nah i heard it's good tho

its a classic

21:25

a must watch if u like anime

21:26

5 cm per Second is a movie that takes a story of growing up and makes it into something that cannot be described as anything less than a masterpiece, with astounding themes, storytelling, art and sound. If someone told me I could watch one movie before I died, I'd undoubtedly choose this one.

21:26

i agree so much

21:27

weebs in

21:27

too offtopic

21:27

monkalaugh

i notice a common scene in sad animes is they meet up again after like 20 years in public and pass eachother and look back at eachother then walk off again

[ddnet/ddnet] Issue opened: #4279 heap-use-after-free in OnMessage

``` ================================================================= ==3755830==ERROR: AddressSanitizer: heap-use-after-free on address 0x619000009ce4 at pc 0x0000004b321d bp 0x7ffcc4f63c40 sp 0x7ffcc4f633f8 WRITE of size 63 at 0x619000009ce4 thread T0 #0 0x4b321c in strncpy (/home/teeworlds/servers/DDRace64-Server_sql+0x4b321c) #1 0x6fbc86 in strncpy /usr/include/x86_64-linux-gnu/bits/string_fortified.h:106:10 #2 0x6fbc86 in str_copy /home/teeworlds/src/master/src/base/sys...

22:30

[ddnet/ddnet] Issue opened: #4280 undefined behavior in CVariableInt::Unpack

``` /home/teeworlds/src/master/src/engine/shared/compression.cpp:58:31: runtime error: left shift of 108 by 27 places cannot be represented in type 'int' #0 0x6423c3 in CVariableInt::Unpack(unsigned char const, int) /home/teeworlds/src/master/src/engine/shared/compression.cpp:58:31 #1 0x6ba20c in CUnpacker::GetInt() /home/teeworlds/src/master/src/engine/shared/packer.cpp:105:15 #2 0x6b7728 in CNetServer::OnPreConnMsg(NETADDR&, CNetPacketConstruct&) /home/teeworlds/src/master...

[ddnet/ddnet] Pull request opened: #4281 CVariableInt: Limit to 31 bits to fit into int (fixes #4280)

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...

22:40

[ddnet/ddnet] Issue closed: #4277 heap-use-after-free in CDragger::Drag

22:40

[ddnet:master] 2 new commits

6565597 Try to fix CDragger's heap-use-after-free (fixes #4277) - def- 2446813 Merge #4278 - bors[bot]

22:40

[ddnet/ddnet] Pull request closed: #4278 Try to fix CDragger's heap-use-after-free (fixes #4277)

[ddnet/ddnet] Issue closed: #4280 undefined behavior in CVariableInt::Unpack

22:53

[ddnet:master] 2 new commits

b3984af CVariableInt: Limit to 31 bits to fit into int (fixes #4280) - def- 97f227b Merge #4281 - bors[bot]

22:53

[ddnet/ddnet] Pull request closed: #4281 CVariableInt: Limit to 31 bits to fit into int (fixes #4280)

[ddnet/ddnet] Pull request opened: #4282 Fix heap-use-after-free in OnMessage (fixes #4279)

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...

// trying to set client name can delete the player object, check if it still exists

23:02

how? @deen

[ddnet:master] 2 new commits

e410315 Fix heap-use-after-free in OnMessage (fixes #4279) - def- 259155c Merge #4282 - bors[bot]

23:21

[ddnet/ddnet] Issue closed: #4279 heap-use-after-free in OnMessage

23:21

[ddnet/ddnet] Pull request closed: #4282 Fix heap-use-after-free in OnMessage (fixes #4279)

23:22

[ddnet/ddnet] Pull request opened: #4283 Hopefully crash less with ASAN

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] Considered possible null pointers and out of bounds array indexing
[ ] Changed no physics that affect existing maps
[x] Tested the change with [ASan+UBSan or valgrind's memcheck](https://github.com/ddnet/ddnet/#using-addresssanitizer--u...

[ddnet/ddnet] Pull request opened: #4284 Reset selection, if gui element was changed outside of DoEditBox

Changing ui element by hot keys was not visible to DoEditBox, and thus didn't act like selection params were resetted

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
[ ] Considered possible null pointers and out of bounds array indexing
[ ] Changed no physics that affect existing maps
[ ]...

@deen I actually don't know how to make this correctly without it being very ugly

hm

23:39

I'm also wondering if we can just assume the asan headers to be there

23:39

it's one more dependency I guess

or if you know more preprocessor magic than me you can give it a try

23:41

hm, now that I think about it that branch there is there even if no asan, which is bad too

yeah, might want to ifdef that away entirely

23:42

ah, you're inside of a macro already, fun

23:43

Tell me if I should try to fix it up (probably tomorrow)

23:43

why do you need to make sure you don't poison the same twice?

deen

why do you need to make sure you don't poison the same twice?

The first poison is to poison the entire pool, couldn't find another way to do it

23:44

I did make an attempt, if you want to take a look, not very pretty though

ah

23:46

using a global static initializer?

23:47

i think that's the cleanest way

@deen um, idk how

23:51

I pushed the ugly mess I came up with, if you don't like it I guess you can try tomorrow

static int dummy = (some_function(), 0); is what I've seen a few times

23:52

(packed up into a macro)

Yeah but asan works with shadow memory, it's not actually initializing the pool itself with sth from what I know

23:53

might be wrong though

I'll push my version

 To enable continue-after-error, compile with -fsanitize-recover=address and then run your code with ASAN_OPTIONS=halt_on_error=0.

i use that

is that too bad?

23:57

oh ok

problem is when you use-after-free with heap memory we could be doing an illegal access, causing the os to kill us

Exported 203 message(s)