[SPIGOT-6533] Remapped classes using the specialsource-maven-plugin are not loading Created: 12/Jun/21  Updated: 13/Jun/21  Resolved: 12/Jun/21

Status: Resolved
Project: Spigot
Component/s: None
Affects Version/s: None
Fix Version/s: None

Type: Bug Priority: Minor
Reporter: David Maes Assignee: Unassigned
Resolution: Done Votes: 0
Labels: None

Version: [21:51:52] [Server thread/INFO]: This server is running CraftBukkit version 3124-Spigot-66f9d3c-384e116 (MC: 1.17) (Implementing API version 1.17-R0.1-SNAPSHOT) [21:51:52] [Server thread/INFO]: You are running the latest version
Guidelines Read: Yes

 Description   

Hello,

I am trying to use the new remapped-mojang jar as a dependency. This works just fine and everything compiles. I package my jar using the specialsource maven plugin to obfuscate the code once again.

<plugin>
                <groupId>net.md-5</groupId>
                <artifactId>specialsource-maven-plugin</artifactId>
                <version>1.2.2</version>
                <executions>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>remap</goal>
                        </goals>
                        <id>remap-obf</id>
                        <configuration>
                            <srgIn>org.spigotmc:minecraft-server:1.17-R0.1-SNAPSHOT:txt:maps-mojang</srgIn>
                            <reverse>true</reverse>
                            <remappedDependencies>org.spigotmc:spigot:1.17-R0.1-SNAPSHOT:jar:remapped-mojang</remappedDependencies>
                            <remappedArtifactAttached>true</remappedArtifactAttached>
                            <remappedClassifierName>remapped-obf</remappedClassifierName>
                        </configuration>
                    </execution>
                    <execution>
                        <phase>package</phase>
                        <goals>
                            <goal>remap</goal>
                        </goals>
                        <id>remap-spigot</id>
                        <configuration>
                            <inputFile>${project.build.directory}/${project.artifactId}-${project.version}-remapped-obf.jar</inputFile>
                            <srgIn>org.spigotmc:minecraft-server:1.17-R0.1-SNAPSHOT:csrg:maps-spigot</srgIn>
                            <remappedDependencies>org.spigotmc:spigot:1.17-R0.1-SNAPSHOT:jar:remapped-obf</remappedDependencies>
                        </configuration>
                    </execution>
                </executions>
            </plugin>

This generates my remapped jar. This all works fine.

However when running my plugin I get following error upon instantiating a class using the obfuscated classes:

java.lang.NoClassDefFoundError: os
        at net.shortninja.staffplus.core.StaffPlus.enable(StaffPlus.java:39) ~[?:?]
        at be.garagepoort.mcioc.TubingPlugin.onEnable(TubingPlugin.java:16) ~[?:?]
        at org.bukkit.plugin.java.JavaPlugin.setEnabled(JavaPlugin.java:263) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at org.bukkit.plugin.java.JavaPluginLoader.enablePlugin(JavaPluginLoader.java:342) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at org.bukkit.plugin.SimplePluginManager.enablePlugin(SimplePluginManager.java:480) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at org.bukkit.craftbukkit.v1_17_R1.CraftServer.enablePlugin(CraftServer.java:495) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at org.bukkit.craftbukkit.v1_17_R1.CraftServer.enablePlugins(CraftServer.java:409) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at net.minecraft.server.MinecraftServer.loadWorld(MinecraftServer.java:607) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at net.minecraft.server.dedicated.DedicatedServer.init(DedicatedServer.java:264) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at net.minecraft.server.MinecraftServer.x(MinecraftServer.java:986) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at net.minecraft.server.MinecraftServer.lambda$0(MinecraftServer.java:307) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at java.lang.Thread.run(Thread.java:831) [?:?]
Caused by: java.lang.ClassNotFoundException: os
        at org.bukkit.plugin.java.PluginClassLoader.loadClass0(PluginClassLoader.java:142) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at org.bukkit.plugin.java.PluginClassLoader.loadClass(PluginClassLoader.java:99) ~[spigot-1.17.jar:3124-Spigot-66f9d3c-384e116]
        at java.lang.ClassLoader.loadClass(ClassLoader.java:519) ~[?:?]
        ... 12 more

It seems he can't resolve the obfuscated classes.
Am I doing something wrong?

Thank you

 Comments   
Comment by David Maes [ 13/Jun/21 ]

Thanks for clarifying that for me.
It works now

Comment by md_5 [ 13/Jun/21 ]

All fields in the normal jar will be obfuscated; most classes will be named slightly differently; and some methods will be obfuscated/named differently. The output jar should contain not Mojang internals, but Spigot internals. If you add

<remappedArtifactAttached>true</remappedArtifactAttached>
<remappedClassifierName>remapped-spigot</remappedClassifierName>

To the second <configuration> this will make it clear by producing a -spigot jar.

Comment by David Maes [ 13/Jun/21 ]

hi md_5,

The normal jar is not obfuscated. I must be misunderstanding something here.
I thought we did the remapping thing to prevent having internal code being distributed?

Comment by md_5 [ 12/Jun/21 ]

HI, you need to use Plugin.jar not Plugin-obf.jar

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