Skip to content
New issue

Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

By clicking “Sign up for GitHub”, you agree to our terms of service and privacy statement. We’ll occasionally send you account related emails.

Already on GitHub? Sign in to your account

Add descriptor for field scheme inside ClassInfo #9

Open
wants to merge 4 commits into
base: main
Choose a base branch
from

Conversation

danirod12
Copy link
Contributor

@danirod12 danirod12 commented May 10, 2024

Byte-code allow you to have same field names if descriptors are different. Remapper was crashing if so happened.

File for testing: ObfProblem-1.0-SNAPSHOT.zip

Caused by: java.lang.IllegalStateException: Duplicate key a (attempted merging values private final org/example/obfproblem/ObfProblem/a I and private final org/example/obfproblem/ObfProblem/a Ljava/lang/String;)
        at java.base/java.util.stream.Collectors.duplicateKeyException(Collectors.java:135)
        at java.base/java.util.stream.Collectors.lambda$uniqKeysMapAccumulator$1(Collectors.java:182)
        at java.base/java.util.stream.ReduceOps$3ReducingSink.accept(ReduceOps.java:169)
        at java.base/java.util.stream.ReferencePipeline$3$1.accept(ReferencePipeline.java:197)
        at java.base/java.util.ArrayList$ArrayListSpliterator.forEachRemaining(ArrayList.java:1708)
        at java.base/java.util.stream.AbstractPipeline.copyInto(AbstractPipeline.java:509)
        at java.base/java.util.stream.AbstractPipeline.wrapAndCopyInto(AbstractPipeline.java:499)
        at java.base/java.util.stream.ReduceOps$ReduceOp.evaluateSequential(ReduceOps.java:921)
        at java.base/java.util.stream.AbstractPipeline.evaluate(AbstractPipeline.java:234)
        at java.base/java.util.stream.ReferencePipeline.collect(ReferencePipeline.java:682)
        at net.neoforged.art.internal.ClassProviderImpl$ClassInfo.<init>(ClassProviderImpl.java:122)

Byte-code allow you to have same field names if descriptors are different. Remapper wes crashing if so happened
@shartte
Copy link
Contributor

shartte commented May 10, 2024

Why does this need to be supported if Mojang doesn't actually have this case within their obfuscated code?

@danirod12
Copy link
Contributor Author

PaperMC team uses this project for remapping plugins on runtime to have mojang mappings on runtime since MC 1.20.5/6, more info:

https://forums.papermc.io/threads/important-dev-psa-future-removal-of-cb-package-relocation.1106/

Some plugins have obfuscation with same field names and different descriptors, so all fails. To see example, please, check mentioned issue above

@shartte
Copy link
Contributor

shartte commented May 11, 2024

PaperMC team uses this project for remapping plugins on runtime to have mojang mappings on runtime since MC 1.20.5/6, more info:

https://forums.papermc.io/threads/important-dev-psa-future-removal-of-cb-package-relocation.1106/

Some plugins have obfuscation with same field names and different descriptors, so all fails. To see example, please, check mentioned issue above

Okay, wait. You mean to tell me that some paper plugins obfuscate... their own code (?)
And we should cater to that?

@danirod12
Copy link
Contributor Author

Basically, yes. It is a common practice for large resources like anti-cheats and I am talking not only about premium resources.
The Mojang itself may add such obfuscation if you are relying on them, so why not to make the lib universal?

Copy link
Member

@Matyrobbrt Matyrobbrt left a comment

Choose a reason for hiding this comment

The reason will be displayed to describe this comment to others. Learn more.

You also missed the spot where class infos are created from runtime Classes.

danirod12 added 2 commits May 11, 2024 23:34
Added raw storage "fieldName -> info" to keep performance
Previous separator space changed to dot separator
Changed runtime class fields retrieving also
@danirod12 danirod12 requested a review from Matyrobbrt May 11, 2024 20:44
Sign up for free to join this conversation on GitHub. Already have an account? Sign in to comment
Labels
None yet
Projects
None yet
Development

Successfully merging this pull request may close these issues.

4 participants