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IRC log for #minetest, 2022-11-09

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All times shown according to UTC.

Time Nick Message
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00:45 MTDiscord <MisterE> iisu, it seems to me that you have no data saved that would indicate what has changed. If you only have a local map save of a server map, then all you have is parts of the map. You could probably use git to keep track of changes, just add a commit before you log on each time. Then, to chech what has changed, log out, check out a specific commit, then reload the game.
00:46 MTDiscord <MisterE> But that requires forethought
00:46 MTDiscord <MisterE> As is, I don't think you have the information saved anywhere
00:47 MTDiscord <Jonathon> if they have the seed, just generate that area, and compare it to the map save
00:47 MTDiscord <Jonathon> iirc certain clients allow you to build from schemes, but that may get you banned depending on there rules
00:47 MTDiscord <MisterE> Well that compares to the beginning of time only
00:47 MTDiscord <Jonathon> > Hi, is there a way to get a map diff (between a map save and seed)? 🤦
00:48 MTDiscord <MisterE> Ah.
00:48 MTDiscord <MisterE> I will stick my head back under its rock
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02:16 kilbith https://www.youtube.com/watch?v=3RmYVBPkDgY
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03:28 fluxionary_ hi, your-land is being targeted by a DOS attack because we banned a nazi. do other community members have any useful advice for how to deal w/ this?
03:32 MTDiscord <Jonathon> dos in what manner?
03:32 MTDiscord <Jonathon> chat spam, packet spam, abusing formspec spam, etc?
03:38 fluxionary_ none of the above
03:38 fluxionary_ connection packets
03:38 fluxionary_ maybe?
03:39 fluxionary_ but basically, sucking up all possible network packet interactions w/out actually establishing a connection w/ the server
03:40 fluxionary_ the server itself doesn't even think there's lag. mobs can interact w/ the environment just fine
03:40 fluxionary_ this happened during a planned "event" where a lot of mobs were spawned to fight against the players. but all the players timed out and were killed by the mobs
03:41 MTDiscord <Jonathon> looking at yl, seems you had some chat spam as well. just ban the ip in iptables thats generating the packet spam. if the server isnt responding to the packets, you could write a script to listen to network traffic
03:41 MTDiscord <Jonathon> *to do it for you
03:42 fluxionary_ and i'm not hypothesizing too much - the attacker stated the got a "DOS" script from a person named "corarona" who seems to be a dragonfire user
03:42 fluxionary_ banning individual IPs isn't useful, that's why i created verbana
03:43 fluxionary_ but i haven't ever finished the work to make it work on IPv6
03:43 fluxionary_ and i also don't think it can help w/ these sort of DOS attacks, we need a way to block stuff automatically at a low level
03:44 fluxionary_ also an attempt to block an IP ended up blocking a long-standing user in good standing because it was too broad
03:45 MTDiscord <Jonathon> oh that, seems your hours late to the party. usually uses cora, there the mcl2 maintainer, and also do/did some work on dragonfire/waspsalivia
03:45 fluxionary_ well, this has been going on for hours
03:45 fluxionary_ not sure we're late, but i haven't seen chatter about this
03:46 fluxionary_ but discord hates me so i admit this has maybe been discussed elsewhere that i can't see
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05:08 MTDiscord <Abdou-31> Hi folks! If anyone could mention my trivial PR in #minetest-dev-irc to get merged, I would appreciate it. I think it's ready. #12902
05:08 ShadowBot https://github.com/minetest/minetest/issues/12902 -- Fix typos and en_US/en_GB inconsistency in various files by Abdou-31
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07:35 iisu MisterE: Yeah, I think that can do it, probably with some tweaking in the resulting map. :/
07:35 iisu Thanks.
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07:40 fgaz fluxionary: if the connection attempts can be detected from logs, look into fail2ban
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08:42 sfan5 !tell fluxionary need packet captures to give targeted advice
08:42 MinetestBot sfan5: I'll pass that on when fluxionary is around
08:43 sfan5 since you say it was a script written by the dragonfire guys chances are they found a bug in the engine but never reported it
09:54 MTDiscord <Bastrabun> The spammer tried to frame cora for the lag attacks, she doesn't have anything to do with it. Reason unknown, but seems like the spammer doesn't consider we're actually talking to each other and his lies won't work in a tight-knit community like ours.
10:03 MTDiscord <Bastrabun> The attack looked a lot like the "send a lot of register accounts packets"
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11:29 MTDiscord <luatic> Have you tried using Wireshark to capture the packet spam?
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11:34 MTDiscord <savilli> Block them by IP in minetest.register_on_prejoinplayer
11:35 MTDiscord <savilli> Like if there are more than 10 login attempts during 1 minute from one IP, block that IP
11:35 MTDiscord <Bastrabun> They are not joining. They are only registering accounts
11:36 MTDiscord <savilli> register_on_prejoinplayer is called on registration too
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11:38 MTDiscord <Bastrabun> They are already denied access in a prejoinplayer callback. The problem is not that they reach ingame, but that they are sending too many reg attempts, overwhelming whatever is behind the reg process
11:40 MTDiscord <savilli> If they're blocked in register_on_prejoinplayer, there wouldn't be any registration process. Are you sure it's the problem?
11:40 MTDiscord <Bastrabun> May I send you a log of two separate attempts in private?
11:41 MTDiscord <Bastrabun> And the code that creates those log entries ofc
11:41 MTDiscord <savilli> Sure
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12:42 fgaz @Bastrabun would fail2ban work?
12:46 MTDiscord <Bastrabun> Probably yes, but I must make sure there's no legit usecase blocked by it
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16:58 MinetestBot [git] Abdou-31 -> minetest/minetest: Fix typos and en_US/en_GB inconsistency in various files (#12902) d1b80b4 https://github.com/minetest/minetest/commit/d1b80b462eaa74a8640cf132c21f74e4f924052a (2022-11-09T16:57:19Z)
16:59 MinetestBot [git] x2048 -> minetest/minetest: Resize hotbar immediately before drawing (#12930) 81bfc9c https://github.com/minetest/minetest/commit/81bfc9c7a2af564063fd74ee0c23d0e5c6511410 (2022-11-09T16:57:55Z)
16:59 MinetestBot [git] GoodClover -> minetest/minetest: Flip player_back.png (#12940) 042f791 https://github.com/minetest/minetest/commit/042f7917e7aa264f91f85c1e073776a22922b2e5 (2022-11-09T16:58:21Z)
16:59 MinetestBot [git] grorp -> minetest/minetest: Fix get_tool_wear_after_use for one use (insta-break) (#12945) 88b04ea https://github.com/minetest/minetest/commit/88b04eadc9b37d44940ccb409f3af18d1cf248ed (2022-11-09T16:58:53Z)
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19:16 MTDiscord <Abdou-31> Thx!
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20:53 rubenwardy ContentDB now has download stats for each package. They're public, you can find them by clicking "statistics". Each user also has a stats page to summarise their packages, you can find yours here: https://content.minetest.net/user/stats/
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21:09 Krock that's pretty cool. what happened on Nov 5/6?
21:09 Krock also the colors repeat too fast
21:10 Desour Krock: see https://forum.minetest.net/viewtopic.php?p=417480#p417480
21:10 Desour (the "video" link)
21:11 Krock man. these Spanish guys surely do like stapling bread to trees https://i.postimg.cc/VvtSW-t3m/grafik.png
21:11 Krock (wrong tooltip point. peak is 53)
21:15 Desour and it doesn't even include those that got their bread stapler via git
21:15 rubenwardy Yeah I need more colors, or an other
21:17 Desour tip: you don't need a different flower for each color if you mix the dyes
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23:20 dmj I keep geeting an error that results in a server shutdown when trying to run a MineClone2 game: "/mcl_mobs/api.lua:2216: bad argument #1 to 'random' (interval is empty)" Any thoughts/advice would be appreciated.
23:20 ShadowBot https://github.com/minetest/minetest/issues/1 -- GlowStone code by anonymousAwesome
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