Pocketmine-mp: Crash when trying to save effect with amplifier >127 to NBT

[XDqrkneZ]

Issue description

server crashing randomly

Steps to reproduce the issue

1. ...
2. ... @dktapps said to remove plugins that tries to set items with excessive counts into the inventory, which i did but it still crash!

OS and versions

• PocketMine-MP: PocketMine-MP version: 1.6.2dev #182 [Protocol 113; API 3.0.0-ALPHA5]
• PHP: 7.0.3
• Server OS: LINUX
• Game version: PE/Win10 (delete as appropriate)

Plugins

• Test on a clean server without plugins: is the issue reproducible without any plugins loaded?

If the issue is not reproducible without plugins:

• Have you asked for help on our forums before creating an issue?
• Can you provide sample, minimal reproducing code for the issue? If so, paste it in the bottom section
• Paste your list of plugins here (use the 'plugins' command in PocketMine-MP)

Crashdump, backtrace or other files

• ...

https://pastebin.com/bXjgXTMX
https://pastebin.com/uB5qqeVi

[moskadev]

That’s sure, you are not’ using the last version.

[dktapps]

I swear, if anyone could read backtraces...

[intagaming]

I have the same issue, but with the duration ones also. It does not have the input check for IntTag's range, so I ended up don't know where is my plugin's fault. Now whenever the server do auto-save, my server pop-up 2 of these errors:

Error: Value 200 is too large!
File: /src/pocketmine/nbt/tag/ByteTag

Error: Value 9223372036854771444 is too large!
File: /src/pocketmine/nbt/tag/IntTag

[MattWAnderson]

Issue description

Steps to reproduce the issue

Users joining server cause crash, full reason unknown.
...
OS and versions

PocketMine-MP version: 1.6.2dev #0 [Protocol 113; API 3.0.0-ALPHA5]
PHP: 7.0.18
Server OS: CentOS 6.5 x64
Game version: PE/Win10 (delete as appropriate)
Crashdump, backtrace or other files

PocketMine-MP Crash Dump Tue Jun 13 22:19:18 CDT 2017

Error: Value 9223372036854771952 is too large!
File: /src/pocketmine/nbt/tag/IntTag
Line: 68
Type: notice

Code:
[59] /**
[60] * @Param int $value
[61] *
[62] * @throws \TypeError
[63] */
[64] public function setValue($value){
[65] if(!is_int($value)){
[66] throw new \TypeError("IntTag value must be of type int, " . gettype($value) . " given");
[67] }elseif($value < -(2 ** 31) or $value > ((2 ** 31) - 1)){
[68] throw new \InvalidArgumentException("Value $value is too large!");
[69] }
[70] parent::setValue($value);
[71] }
[72] }
[73]
[74]
[75]
[76]
[77]
[78]

Backtrace:
#0 /src/pocketmine/nbt/tag/NamedTag(38): pocketmine\nbt\tag\IntTag->setValue(integer 9223372036854771952)
#1 /src/pocketmine/nbt/tag/IntTag(37): pocketmine\nbt\tag\NamedTag->__construct(string Duration, integer 9223372036854771952)
#2 /src/pocketmine/entity/Entity(777): pocketmine\nbt\tag\IntTag->__construct(string Duration, integer 9223372036854771952)
#3 /src/pocketmine/entity/Living(104): pocketmine\entity\Entity->saveNBT(boolean)
#4 /src/pocketmine/entity/Human(434): pocketmine\entity\Living->saveNBT(boolean)
#5 /src/pocketmine/Player(3734): pocketmine\entity\Human->saveNBT(boolean)
#6 /src/pocketmine/Server(2303): pocketmine\Player->save(boolean 1)
#7 /src/pocketmine/Server(2450): pocketmine\Server->doAutoSave(boolean)
#8 /src/pocketmine/Server(2186): pocketmine\Server->tick(boolean)
#9 /src/pocketmine/Server(2068): pocketmine\Server->tickProcessor(boolean)
#10 /src/pocketmine/Server(1654): pocketmine\Server->start(boolean)
#11 /src/pocketmine/PocketMine(503): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string /home/tcagame/pocketminers/15/, string /home/tcagame/pocketminers/15/, string /home/tcagame/pocketminers/15/plugins/)

PocketMine-MP version: 1.6.2dev #0 [Protocol 113; API 3.0.0-ALPHA5]
Git commit: 0000000000000000000000000000000000000000
uname -a: Linux S1.pocketminers.com 3.14.32-xxxx-grs-ipv6-64 #7 SMP Wed Jan 27 18:05:09 CET 2016 x86_64
PHP Version: 7.0.18
Zend version: 3.0.0
OS : Linux, linux

Loaded plugins:
DevTools 1.11.1 by PocketMine Team for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
MCPEPlanet_BuildBattle 3 by DragonPlayzMC, MattWAnderson for API(s) 3.0.0-ALPHA5
SecretSauce 1.2 by MattWAnderson for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
FactionsPro 1.7 by Tethered_, SpongeHost, PocketMiners.com for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
TopVoter 1.7 by SalmonDE for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
SAMMY 2 by Humerus,MattWAnderson for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
xyz 1.0.1 by unerds for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
WorldProtect 2.2.0 by aliuly for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
RealTime 2.1.1 by Guillaume351 for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6
MyPlot 1.1.3 by Wiez, Exxarion, jasonwynn10 for API(s) 3.0.0-ALPHA4, 3.0.0-ALPHA5, 3.0.0-ALPHA6

----------------------REPORT THE DATA BELOW THIS LINE-----------------------

===BEGIN CRASH DUMP===
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tQ==
===END CRASH DUMP===

[MattWAnderson]

Was likely the plugin using $speed->setDuration(PHP_INT_MAX); causing the issue.

[intagaming]

Why the value of PHP_INT_MAX is different? I think with the level of knowing how to use PHP_INT_MAX, no one is gonna add some value to PHP_INT_MAX, do they ?

[knownunown]

PHP_INT_MAX is PHP's maximum supported int value on that architecture. IntTag stores a 32-bit integer. When PHP is running on a 64-bit system, PHP_INT_MAX is outside the bounds of a 32-bit integer.

[Muqsit]

One way to fix this would be using an if statement.
According to http://minecraft.gamepedia.com/Player.dat_format, the current value types are correct.
Id, Amplifier, ShowParticles and Ambient should be TAG_Byte and Duration should be TAG_Int

[dktapps]

@Muqsit the types are correct, but they exceed the bounds because they are unsigned, whereas TAG_* values are always supposed to be signed.

[Muqsit]

@dktapps Oh, makes sense now.

[dktapps]

[12:14:10] [Server thread/CRITICAL]: InvalidArgumentException: "Value 60000 is too large!" (EXCEPTION) in "pocketmine-mp/src/pocketmine/nbt/tag/ShortTag" at line 70
[12:14:10] [Server thread/DEBUG]: #0 pocketmine-mp/src/pocketmine/nbt/tag/NamedTag(38): pocketmine\nbt\tag\ShortTag->setValue(integer 60000)
[12:14:10] [Server thread/DEBUG]: #1 pocketmine-mp/src/pocketmine/nbt/tag/ShortTag(39): pocketmine\nbt\tag\NamedTag->__construct(string Air, integer 60000)
[12:14:10] [Server thread/DEBUG]: #2 pocketmine-mp/src/pocketmine/entity/Entity(775): pocketmine\nbt\tag\ShortTag->__construct(string Air, integer 60000)
[12:14:10] [Server thread/DEBUG]: #3 pocketmine-mp/src/pocketmine/entity/Living(104): pocketmine\entity\Entity->saveNBT(boolean)
[12:14:10] [Server thread/DEBUG]: #4 pocketmine-mp/src/pocketmine/entity/Human(434): pocketmine\entity\Living->saveNBT(boolean)
[12:14:10] [Server thread/DEBUG]: #5 pocketmine-mp/src/pocketmine/Player(3770): pocketmine\entity\Human->saveNBT(boolean)
[12:14:10] [Server thread/DEBUG]: #6 pocketmine-mp/src/pocketmine/Player(3688): pocketmine\Player->save(boolean)
[12:14:10] [Server thread/DEBUG]: #7 pocketmine-mp/src/pocketmine/Server(1991): pocketmine\Player->close(pocketmine\event\TranslationContainer object, string Server closed)
[12:14:10] [Server thread/DEBUG]: #8 pocketmine-mp/src/pocketmine/Server(2073): pocketmine\Server->forceShutdown(boolean)
[12:14:10] [Server thread/DEBUG]: #9 pocketmine-mp/src/pocketmine/Server(1654): pocketmine\Server->start(boolean)
[12:14:10] [Server thread/DEBUG]: #10 pocketmine-mp/src/pocketmine/PocketMine(504): pocketmine\Server->__construct(BaseClassLoader object, pocketmine\utils\MainLogger object, string pocketmine-mp\, string pocketmine-mp\, string pocketmine-mp\plugins\)
[12:14:10] [Server thread/EMERGENCY]: Crashed while crashing, killing process

also interesting