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Co-Authored-By: Bjorn Beishline <75190918+bjorntheprogrammer@users.noreply.github.com>
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Alexander Medvedev 2026-01-21 19:20:07 +01:00
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#
# https://help.github.com/articles/dealing-with-line-endings/
#
# Linux start script should use lf
/gradlew text eol=lf
# These are Windows script files and should use crlf
*.bat text eol=crlf
# Binary files should be left untouched
*.jar binary

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/target
/rust/target
rust/resources/jassets/*
rust/resources/deps/*
!rust/resources/jassets/j4rs-*
# Ignore Gradle project-specific cache directory
java/.gradle
# Ignore Gradle build output directory
java/papkin/build
java/papkin/bin
java/papkin/.project
java/build
java/.idea
.idea

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# Papkin
A plugin for [PumpkinMC](https://pumpkinmc.org/) that adds support for [PaperMC](https://papermc.io/), [Spigot](https://www.spigotmc.org/), and [Bukkit](https://dev.bukkit.org/) plugins.
## Installation
> [!IMPORTANT]
> Currently Papkin is in heavy development, as such releases are not yet available.
1. Install [java](https://docs.papermc.io/misc/java-install/)
2. Download the plugin in releases `papkin-mac.dylib`, `papkin-linux-aarch64.so`, `papkin-linux-x86.so`, or `papkin-windows-x86.dll`.
3. Add it into your PumpkinMC plugin directory (this gets created after runing PumpkinMC for the first time).
4. Run PumpkinMC again, and you should see a new directory in PumpkinMC called `papkin`. You can add any `bukkit`, `spigot`, or `paper` plugin you wish, and it will run.
## Development
If you wish to contribute to Papkin, follow the following steps:
1. Build PumpkinMC from source with the `nightly-2025-12-11` rust toolchain.
2. Clone this repository
3. `cd` into the `java` directory and run `./gradlew build`
4. `cd` into the `rust` directory and run `cargo build`
5. Copy the `target/debug/papkin` binary to the `plugins` directory in your PumpkinMC server.

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<?xml version="1.0" encoding="UTF-8"?>
<projectDescription>
<name>papkin-java</name>
<comment>Project java created by Buildship.</comment>
<projects>
</projects>
<buildSpec>
<buildCommand>
<name>org.eclipse.buildship.core.gradleprojectbuilder</name>
<arguments>
</arguments>
</buildCommand>
</buildSpec>
<natures>
<nature>org.eclipse.buildship.core.gradleprojectnature</nature>
</natures>
<filteredResources>
<filter>
<id>1763985082869</id>
<name></name>
<type>30</type>
<matcher>
<id>org.eclipse.core.resources.regexFilterMatcher</id>
<arguments>node_modules|\.git|__CREATED_BY_JAVA_LANGUAGE_SERVER__</arguments>
</matcher>
</filter>
</filteredResources>
</projectDescription>

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arguments=--init-script /home/bjorn/.local/share/zed/extensions/work/java/jdtls/jdt-language-server-1.54.0-202511261751/configuration/org.eclipse.osgi/58/0/.cp/gradle/init/init.gradle
auto.sync=false
build.scans.enabled=false
connection.gradle.distribution=GRADLE_DISTRIBUTION(WRAPPER)
connection.project.dir=
eclipse.preferences.version=1
gradle.user.home=
java.home=/home/bjorn/.sdkman/candidates/java/21.0.6-tem
jvm.arguments=
offline.mode=false
override.workspace.settings=true
show.console.view=true
show.executions.view=true

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If the Program specifies that a proxy can decide which future
versions of the GNU General Public License can be used, that proxy's
public statement of acceptance of a version permanently authorizes you
to choose that version for the Program.
Later license versions may give you additional or different
permissions. However, no additional obligations are imposed on any
author or copyright holder as a result of your choosing to follow a
later version.
15. Disclaimer of Warranty.
THERE IS NO WARRANTY FOR THE PROGRAM, TO THE EXTENT PERMITTED BY
APPLICABLE LAW. EXCEPT WHEN OTHERWISE STATED IN WRITING THE COPYRIGHT
HOLDERS AND/OR OTHER PARTIES PROVIDE THE PROGRAM "AS IS" WITHOUT WARRANTY
OF ANY KIND, EITHER EXPRESSED OR IMPLIED, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE. THE ENTIRE RISK AS TO THE QUALITY AND PERFORMANCE OF THE PROGRAM
IS WITH YOU. SHOULD THE PROGRAM PROVE DEFECTIVE, YOU ASSUME THE COST OF
ALL NECESSARY SERVICING, REPAIR OR CORRECTION.
16. Limitation of Liability.
IN NO EVENT UNLESS REQUIRED BY APPLICABLE LAW OR AGREED TO IN WRITING
WILL ANY COPYRIGHT HOLDER, OR ANY OTHER PARTY WHO MODIFIES AND/OR CONVEYS
THE PROGRAM AS PERMITTED ABOVE, BE LIABLE TO YOU FOR DAMAGES, INCLUDING ANY
GENERAL, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES ARISING OUT OF THE
USE OR INABILITY TO USE THE PROGRAM (INCLUDING BUT NOT LIMITED TO LOSS OF
DATA OR DATA BEING RENDERED INACCURATE OR LOSSES SUSTAINED BY YOU OR THIRD
PARTIES OR A FAILURE OF THE PROGRAM TO OPERATE WITH ANY OTHER PROGRAMS),
EVEN IF SUCH HOLDER OR OTHER PARTY HAS BEEN ADVISED OF THE POSSIBILITY OF
SUCH DAMAGES.
17. Interpretation of Sections 15 and 16.
If the disclaimer of warranty and limitation of liability provided
above cannot be given local legal effect according to their terms,
reviewing courts shall apply local law that most closely approximates
an absolute waiver of all civil liability in connection with the
Program, unless a warranty or assumption of liability accompanies a
copy of the Program in return for a fee.
END OF TERMS AND CONDITIONS
How to Apply These Terms to Your New Programs
If you develop a new program, and you want it to be of the greatest
possible use to the public, the best way to achieve this is to make it
free software which everyone can redistribute and change under these terms.
To do so, attach the following notices to the program. It is safest
to attach them to the start of each source file to most effectively
state the exclusion of warranty; and each file should have at least
the "copyright" line and a pointer to where the full notice is found.
<one line to give the program's name and a brief idea of what it does.>
Copyright (C) <year> <name of author>
This program is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with this program. If not, see <https://www.gnu.org/licenses/>.
Also add information on how to contact you by electronic and paper mail.
If the program does terminal interaction, make it output a short
notice like this when it starts in an interactive mode:
<program> Copyright (C) <year> <name of author>
This program comes with ABSOLUTELY NO WARRANTY; for details type `show w'.
This is free software, and you are welcome to redistribute it
under certain conditions; type `show c' for details.
The hypothetical commands `show w' and `show c' should show the appropriate
parts of the General Public License. Of course, your program's commands
might be different; for a GUI interface, you would use an "about box".
You should also get your employer (if you work as a programmer) or school,
if any, to sign a "copyright disclaimer" for the program, if necessary.
For more information on this, and how to apply and follow the GNU GPL, see
<https://www.gnu.org/licenses/>.
The GNU General Public License does not permit incorporating your program
into proprietary programs. If your program is a subroutine library, you
may consider it more useful to permit linking proprietary applications with
the library. If this is what you want to do, use the GNU Lesser General
Public License instead of this License. But first, please read
<https://www.gnu.org/licenses/why-not-lgpl.html>.

4
java/gradle.properties Normal file
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@ -0,0 +1,4 @@
# This file was generated by the Gradle 'init' task.
# https://docs.gradle.org/current/userguide/build_environment.html#sec:gradle_configuration_properties
org.gradle.configuration-cache=true

12
java/gradle/libs.versions.toml Normal file
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@ -0,0 +1,12 @@
# This file was generated by the Gradle 'init' task.
# https://docs.gradle.org/current/userguide/platforms.html#sub::toml-dependencies-format
[versions]
commons-math3 = "3.6.1"
guava = "33.3.1-jre"
junit-jupiter = "5.11.1"
[libraries]
commons-math3 = { module = "org.apache.commons:commons-math3", version.ref = "commons-math3" }
guava = { module = "com.google.guava:guava", version.ref = "guava" }
junit-jupiter = { module = "org.junit.jupiter:junit-jupiter", version.ref = "junit-jupiter" }

BIN
java/gradle/wrapper/gradle-wrapper.jar vendored Normal file
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7
java/gradle/wrapper/gradle-wrapper.properties vendored Normal file
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distributionBase=GRADLE_USER_HOME
distributionPath=wrapper/dists
distributionUrl=https\://services.gradle.org/distributions/gradle-8.12.1-bin.zip
networkTimeout=10000
validateDistributionUrl=true
zipStoreBase=GRADLE_USER_HOME
zipStorePath=wrapper/dists

251
java/gradlew vendored Executable file
View File

@ -0,0 +1,251 @@
#!/bin/sh
#
# Copyright © 2015-2021 the original authors.
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# https://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
#
# SPDX-License-Identifier: Apache-2.0
#
##############################################################################
#
# Gradle start up script for POSIX generated by Gradle.
#
# Important for running:
#
# (1) You need a POSIX-compliant shell to run this script. If your /bin/sh is
# noncompliant, but you have some other compliant shell such as ksh or
# bash, then to run this script, type that shell name before the whole
# command line, like:
#
# ksh Gradle
#
# Busybox and similar reduced shells will NOT work, because this script
# requires all of these POSIX shell features:
# * functions;
# * expansions «$var», «${var}», «${var:-default}», «${var+SET}»,
# «${var#prefix}», «${var%suffix}», and «$( cmd )»;
# * compound commands having a testable exit status, especially «case»;
# * various built-in commands including «command», «set», and «ulimit».
#
# Important for patching:
#
# (2) This script targets any POSIX shell, so it avoids extensions provided
# by Bash, Ksh, etc; in particular arrays are avoided.
#
# The "traditional" practice of packing multiple parameters into a
# space-separated string is a well documented source of bugs and security
# problems, so this is (mostly) avoided, by progressively accumulating
# options in "$@", and eventually passing that to Java.
#
# Where the inherited environment variables (DEFAULT_JVM_OPTS, JAVA_OPTS,
# and GRADLE_OPTS) rely on word-splitting, this is performed explicitly;
# see the in-line comments for details.
#
# There are tweaks for specific operating systems such as AIX, CygWin,
# Darwin, MinGW, and NonStop.
#
# (3) This script is generated from the Groovy template
# https://github.com/gradle/gradle/blob/HEAD/platforms/jvm/plugins-application/src/main/resources/org/gradle/api/internal/plugins/unixStartScript.txt
# within the Gradle project.
#
# You can find Gradle at https://github.com/gradle/gradle/.
#
##############################################################################
# Attempt to set APP_HOME
# Resolve links: $0 may be a link
app_path=$0
# Need this for daisy-chained symlinks.
while
APP_HOME=${app_path%"${app_path##*/}"} # leaves a trailing /; empty if no leading path
[ -h "$app_path" ]
do
ls=$( ls -ld "$app_path" )
link=${ls#*' -> '}
case $link in #(
/*) app_path=$link ;; #(
*) app_path=$APP_HOME$link ;;
esac
done
# This is normally unused
# shellcheck disable=SC2034
APP_BASE_NAME=${0##*/}
# Discard cd standard output in case $CDPATH is set (https://github.com/gradle/gradle/issues/25036)
APP_HOME=$( cd -P "${APP_HOME:-./}" > /dev/null && printf '%s\n' "$PWD" ) || exit
# Use the maximum available, or set MAX_FD != -1 to use that value.
MAX_FD=maximum
warn () {
echo "$*"
} >&2
die () {
echo
echo "$*"
echo
exit 1
} >&2
# OS specific support (must be 'true' or 'false').
cygwin=false
msys=false
darwin=false
nonstop=false
case "$( uname )" in #(
CYGWIN* ) cygwin=true ;; #(
Darwin* ) darwin=true ;; #(
MSYS* | MINGW* ) msys=true ;; #(
NONSTOP* ) nonstop=true ;;
esac
CLASSPATH=$APP_HOME/gradle/wrapper/gradle-wrapper.jar
# Determine the Java command to use to start the JVM.
if [ -n "$JAVA_HOME" ] ; then
if [ -x "$JAVA_HOME/jre/sh/java" ] ; then
# IBM's JDK on AIX uses strange locations for the executables
JAVACMD=$JAVA_HOME/jre/sh/java
else
JAVACMD=$JAVA_HOME/bin/java
fi
if [ ! -x "$JAVACMD" ] ; then
die "ERROR: JAVA_HOME is set to an invalid directory: $JAVA_HOME
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
else
JAVACMD=java
if ! command -v java >/dev/null 2>&1
then
die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
Please set the JAVA_HOME variable in your environment to match the
location of your Java installation."
fi
fi
# Increase the maximum file descriptors if we can.
if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
case $MAX_FD in #(
max*)
# In POSIX sh, ulimit -H is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
MAX_FD=$( ulimit -H -n ) ||
warn "Could not query maximum file descriptor limit"
esac
case $MAX_FD in #(
'' | soft) :;; #(
*)
# In POSIX sh, ulimit -n is undefined. That's why the result is checked to see if it worked.
# shellcheck disable=SC2039,SC3045
ulimit -n "$MAX_FD" ||
warn "Could not set maximum file descriptor limit to $MAX_FD"
esac
fi
# Collect all arguments for the java command, stacking in reverse order:
# * args from the command line
# * the main class name
# * -classpath
# * -D...appname settings
# * --module-path (only if needed)
# * DEFAULT_JVM_OPTS, JAVA_OPTS, and GRADLE_OPTS environment variables.
# For Cygwin or MSYS, switch paths to Windows format before running java
if "$cygwin" || "$msys" ; then
APP_HOME=$( cygpath --path --mixed "$APP_HOME" )
CLASSPATH=$( cygpath --path --mixed "$CLASSPATH" )
JAVACMD=$( cygpath --unix "$JAVACMD" )
# Now convert the arguments - kludge to limit ourselves to /bin/sh
for arg do
if
case $arg in #(
-*) false ;; # don't mess with options #(
/?*) t=${arg#/} t=/${t%%/*} # looks like a POSIX filepath
[ -e "$t" ] ;; #(
*) false ;;
esac
then
arg=$( cygpath --path --ignore --mixed "$arg" )
fi
# Roll the args list around exactly as many times as the number of
# args, so each arg winds up back in the position where it started, but
# possibly modified.
#
# NB: a `for` loop captures its iteration list before it begins, so
# changing the positional parameters here affects neither the number of
# iterations, nor the values presented in `arg`.
shift # remove old arg
set -- "$@" "$arg" # push replacement arg
done
fi
# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
# Collect all arguments for the java command:
# * DEFAULT_JVM_OPTS, JAVA_OPTS, JAVA_OPTS, and optsEnvironmentVar are not allowed to contain shell fragments,
# and any embedded shellness will be escaped.
# * For example: A user cannot expect ${Hostname} to be expanded, as it is an environment variable and will be
# treated as '${Hostname}' itself on the command line.
set -- \
"-Dorg.gradle.appname=$APP_BASE_NAME" \
-classpath "$CLASSPATH" \
org.gradle.wrapper.GradleWrapperMain \
"$@"
# Stop when "xargs" is not available.
if ! command -v xargs >/dev/null 2>&1
then
die "xargs is not available"
fi
# Use "xargs" to parse quoted args.
#
# With -n1 it outputs one arg per line, with the quotes and backslashes removed.
#
# In Bash we could simply go:
#
# readarray ARGS < <( xargs -n1 <<<"$var" ) &&
# set -- "${ARGS[@]}" "$@"
#
# but POSIX shell has neither arrays nor command substitution, so instead we
# post-process each arg (as a line of input to sed) to backslash-escape any
# character that might be a shell metacharacter, then use eval to reverse
# that process (while maintaining the separation between arguments), and wrap
# the whole thing up as a single "set" statement.
#
# This will of course break if any of these variables contains a newline or
# an unmatched quote.
#
eval "set -- $(
printf '%s\n' "$DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS" |
xargs -n1 |
sed ' s~[^-[:alnum:]+,./:=@_]~\\&~g; ' |
tr '\n' ' '
)" '"$@"'
exec "$JAVACMD" "$@"

94
java/gradlew.bat vendored Normal file
View File

@ -0,0 +1,94 @@
@rem
@rem Copyright 2015 the original author or authors.
@rem
@rem Licensed under the Apache License, Version 2.0 (the "License");
@rem you may not use this file except in compliance with the License.
@rem You may obtain a copy of the License at
@rem
@rem https://www.apache.org/licenses/LICENSE-2.0
@rem
@rem Unless required by applicable law or agreed to in writing, software
@rem distributed under the License is distributed on an "AS IS" BASIS,
@rem WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
@rem See the License for the specific language governing permissions and
@rem limitations under the License.
@rem
@rem SPDX-License-Identifier: Apache-2.0
@rem
@if "%DEBUG%"=="" @echo off
@rem ##########################################################################
@rem
@rem Gradle startup script for Windows
@rem
@rem ##########################################################################
@rem Set local scope for the variables with windows NT shell
if "%OS%"=="Windows_NT" setlocal
set DIRNAME=%~dp0
if "%DIRNAME%"=="" set DIRNAME=.
@rem This is normally unused
set APP_BASE_NAME=%~n0
set APP_HOME=%DIRNAME%
@rem Resolve any "." and ".." in APP_HOME to make it shorter.
for %%i in ("%APP_HOME%") do set APP_HOME=%%~fi
@rem Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
set DEFAULT_JVM_OPTS="-Xmx64m" "-Xms64m"
@rem Find java.exe
if defined JAVA_HOME goto findJavaFromJavaHome
set JAVA_EXE=java.exe
%JAVA_EXE% -version >NUL 2>&1
if %ERRORLEVEL% equ 0 goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:findJavaFromJavaHome
set JAVA_HOME=%JAVA_HOME:"=%
set JAVA_EXE=%JAVA_HOME%/bin/java.exe
if exist "%JAVA_EXE%" goto execute
echo. 1>&2
echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% 1>&2
echo. 1>&2
echo Please set the JAVA_HOME variable in your environment to match the 1>&2
echo location of your Java installation. 1>&2
goto fail
:execute
@rem Setup the command line
set CLASSPATH=%APP_HOME%\gradle\wrapper\gradle-wrapper.jar
@rem Execute Gradle
"%JAVA_EXE%" %DEFAULT_JVM_OPTS% %JAVA_OPTS% %GRADLE_OPTS% "-Dorg.gradle.appname=%APP_BASE_NAME%" -classpath "%CLASSPATH%" org.gradle.wrapper.GradleWrapperMain %*
:end
@rem End local scope for the variables with windows NT shell
if %ERRORLEVEL% equ 0 goto mainEnd
:fail
rem Set variable GRADLE_EXIT_CONSOLE if you need the _script_ return code instead of
rem the _cmd.exe /c_ return code!
set EXIT_CODE=%ERRORLEVEL%
if %EXIT_CODE% equ 0 set EXIT_CODE=1
if not ""=="%GRADLE_EXIT_CONSOLE%" exit %EXIT_CODE%
exit /b %EXIT_CODE%
:mainEnd
if "%OS%"=="Windows_NT" endlocal
:omega

18
java/papkin/.classpath Normal file
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@ -0,0 +1,18 @@
<?xml version="1.0" encoding="UTF-8"?>
<classpath>
<classpathentry kind="src" output="bin/main" path="src/main/java">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
<classpathentry kind="src" output="bin/main" path="src/main/resources">
<attributes>
<attribute name="gradle_scope" value="main"/>
<attribute name="gradle_used_by_scope" value="main,test"/>
</attributes>
</classpathentry>
<classpathentry kind="con" path="org.eclipse.jdt.launching.JRE_CONTAINER/org.eclipse.jdt.internal.debug.ui.launcher.StandardVMType/JavaSE-21/"/>
<classpathentry kind="con" path="org.eclipse.buildship.core.gradleclasspathcontainer"/>
<classpathentry kind="output" path="bin/default"/>
</classpath>

2
java/papkin/.settings/org.eclipse.buildship.core.prefs Normal file
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@ -0,0 +1,2 @@
connection.project.dir=..
eclipse.preferences.version=1

21
java/papkin/build.gradle.kts Normal file
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@ -0,0 +1,21 @@
plugins {
`java-library`
}
repositories {
maven {
name = "papermc"
url = uri("https://repo.papermc.io/repository/maven-public/")
}
}
dependencies {
compileOnly("io.papermc.paper:paper-api:1.21.11-R0.1-SNAPSHOT")
implementation("net.sf.jopt-simple:jopt-simple:6.0-alpha-3")
}
java {
toolchain {
languageVersion = JavaLanguageVersion.of(21)
}
}

1817
java/papkin/src/main/java/org/papkin/PapkinServer.java Normal file
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335
java/papkin/src/main/java/org/papkin/PapkinUnsafeValues.java Normal file
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@ -0,0 +1,335 @@
package org.papkin;
import com.google.common.collect.Multimap;
import com.google.gson.JsonObject;
import io.papermc.paper.entity.EntitySerializationFlag;
import io.papermc.paper.inventory.tooltip.TooltipContext;
import io.papermc.paper.plugin.lifecycle.event.LifecycleEventManager;
import io.papermc.paper.registry.RegistryKey;
import net.kyori.adventure.text.Component;
import net.kyori.adventure.text.event.HoverEvent;
import net.kyori.adventure.text.flattener.ComponentFlattener;
import net.kyori.adventure.text.serializer.gson.GsonComponentSerializer;
import net.kyori.adventure.text.serializer.legacy.LegacyComponentSerializer;
import net.kyori.adventure.text.serializer.plain.PlainComponentSerializer;
import net.kyori.adventure.text.serializer.plain.PlainTextComponentSerializer;
import org.bukkit.*;
import org.bukkit.advancement.Advancement;
import org.bukkit.attribute.Attributable;
import org.bukkit.attribute.Attribute;
import org.bukkit.attribute.AttributeModifier;
import org.bukkit.block.data.BlockData;
import org.bukkit.command.CommandSender;
import org.bukkit.damage.DamageSource;
import org.bukkit.damage.DamageType;
import org.bukkit.entity.Entity;
import org.bukkit.entity.EntityType;
import org.bukkit.entity.Player;
import org.bukkit.inventory.CreativeCategory;
import org.bukkit.inventory.EquipmentSlot;
import org.bukkit.inventory.ItemStack;
import org.bukkit.material.MaterialData;
import org.bukkit.plugin.InvalidPluginException;
import org.bukkit.plugin.Plugin;
import org.bukkit.plugin.PluginDescriptionFile;
import org.bukkit.plugin.java.JavaPlugin;
import org.bukkit.potion.PotionType;
import org.jetbrains.annotations.NotNull;
import org.jetbrains.annotations.Nullable;
import org.jspecify.annotations.NonNull;
import java.io.IOException;
import java.util.List;
import java.util.Map;
import java.util.function.BooleanSupplier;
@SuppressWarnings("removal")
public class PapkinUnsafeValues implements UnsafeValues {
public static final PapkinUnsafeValues INSTANCE = new PapkinUnsafeValues();
// These are commonly used - implement first
@Override
public int getDataVersion() {
return 4189; // 1.21.4 data version - match your server
}
@Override
public ItemStack modifyItemStack(ItemStack stack, String arguments) {
return null;
}
@Override
public boolean isSupportedApiVersion(String apiVersion) {
// Accept common API versions
return (
apiVersion != null &&
(apiVersion.equals("1.21") || apiVersion.equals("1.20"))
);
}
@Override
public byte[] serializeItem(ItemStack item) {
return new byte[0];
}
@Override
public ItemStack deserializeItem(byte[] data) {
return null;
}
@Override
public @NotNull JsonObject serializeItemAsJson(@NotNull ItemStack itemStack) {
return null;
}
@Override
public @NotNull ItemStack deserializeItemFromJson(@NotNull JsonObject data) throws IllegalArgumentException {
return null;
}
@Override
public byte @NotNull [] serializeEntity(@NotNull Entity entity, @NonNull @NotNull EntitySerializationFlag... serializationFlags) {
return new byte[0];
}
@Override
public @NotNull Entity deserializeEntity(byte @NotNull [] data, @NotNull World world, boolean preserveUUID, boolean preservePassengers) {
return null;
}
@Override
public int nextEntityId() {
return 0;
}
@Override
public @NotNull String getMainLevelName() {
return "";
}
@Override
public int getProtocolVersion() {
return 0;
}
@Override
public boolean isValidRepairItemStack(@NotNull ItemStack itemToBeRepaired, @NotNull ItemStack repairMaterial) {
return false;
}
@Override
public boolean hasDefaultEntityAttributes(@NotNull NamespacedKey entityKey) {
return false;
}
@Override
public @NotNull Attributable getDefaultEntityAttributes(@NotNull NamespacedKey entityKey) {
return null;
}
@Override
public @NotNull NamespacedKey getBiomeKey(RegionAccessor accessor, int x, int y, int z) {
return null;
}
@Override
public void setBiomeKey(RegionAccessor accessor, int x, int y, int z, NamespacedKey biomeKey) {
}
@Override
public String getStatisticCriteriaKey(@NotNull Statistic statistic) {
return "";
}
@Override
public @Nullable Color getSpawnEggLayerColor(EntityType entityType, int layer) {
return null;
}
@Override
public LifecycleEventManager<Plugin> createPluginLifecycleEventManager(JavaPlugin plugin, BooleanSupplier registrationCheck) {
return null;
}
@Override
public @NotNull List<Component> computeTooltipLines(@NotNull ItemStack itemStack, @NotNull TooltipContext tooltipContext, @Nullable Player player) {
return List.of();
}
@Override
public ItemStack createEmptyStack() {
return null;
}
@Override
public @NotNull Map<String, Object> serializeStack(ItemStack itemStack) {
return Map.of();
}
@Override
public @NotNull ItemStack deserializeStack(@NotNull Map<String, Object> args) {
return null;
}
@Override
public @NotNull ItemStack deserializeItemHover(HoverEvent.@NotNull ShowItem itemHover) {
return null;
}
@Override
public void checkSupported(PluginDescriptionFile pdf) throws InvalidPluginException {
// Be lenient during development - accept most plugins
String api = pdf.getAPIVersion();
if (api != null && !isSupportedApiVersion(api)) {
throw new InvalidPluginException("Unsupported API: " + api);
}
}
@Override
public byte[] processClass(
PluginDescriptionFile pdf,
String path,
byte[] clazz
) {
// Return unchanged - skip Commodore remapping for now
return clazz;
}
@Override
public Advancement loadAdvancement(NamespacedKey key, String advancement) {
return null;
}
@Override
public boolean removeAdvancement(NamespacedKey key) {
return false;
}
@Override
public Multimap<Attribute, AttributeModifier> getDefaultAttributeModifiers(Material material, EquipmentSlot slot) {
return null;
}
@Override
public CreativeCategory getCreativeCategory(Material material) {
return null;
}
@Override
public String getBlockTranslationKey(Material material) {
return "";
}
@Override
public String getItemTranslationKey(Material material) {
return "";
}
@Override
public String getTranslationKey(EntityType entityType) {
return "";
}
@Override
public String getTranslationKey(ItemStack itemStack) {
return "";
}
@Override
public String getTranslationKey(Attribute attribute) {
return "";
}
@Override
public PotionType.InternalPotionData getInternalPotionData(NamespacedKey key) {
return null;
}
@Override
public DamageSource.@NotNull Builder createDamageSourceBuilder(@NotNull DamageType damageType) {
return null;
}
@Override
public String get(Class<?> aClass, String value) {
return "";
}
@Override
public <B extends Keyed> B get(RegistryKey<B> registry, NamespacedKey key) {
return null;
}
// Adventure components - commonly used
@Override
public ComponentFlattener componentFlattener() {
return ComponentFlattener.basic();
}
@Override
public PlainComponentSerializer plainComponentSerializer() {
return null;
}
@Override
public PlainTextComponentSerializer plainTextSerializer() {
return null;
}
@Override
public GsonComponentSerializer gsonComponentSerializer() {
return null;
}
@Override
public GsonComponentSerializer colorDownsamplingGsonComponentSerializer() {
return null;
}
@Override
public LegacyComponentSerializer legacyComponentSerializer() {
return null;
}
@Override
public Component resolveWithContext(Component component, CommandSender context, Entity scoreboardSubject, boolean bypassPermissions) throws IOException {
return null;
}
// Stub everything else
@Override
public Material toLegacy(Material material) {
throw new UnsupportedOperationException(
"Pumpkin doesn't support legacy materials"
);
}
@Override
public Material fromLegacy(Material material) {
return null;
}
@Override
public Material fromLegacy(MaterialData material) {
return null;
}
@Override
public Material fromLegacy(MaterialData material, boolean itemPriority) {
return null;
}
@Override
public BlockData fromLegacy(Material material, byte data) {
return null;
}
@Override
public Material getMaterial(String material, int version) {
return null;
}
// ... etc
}

23
java/papkin/src/main/java/org/papkin/PluginLoader.java Normal file
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package org.papkin.loader;
import io.papermc.paper.plugin.provider.util.ProviderUtil;
import java.io.File;
import java.net.URL;
import java.net.URLClassLoader;
import org.bukkit.plugin.java.JavaPlugin;
public class PluginLoader {
public JavaPlugin createPlugin(String mainClass) {
try {
return ProviderUtil.loadClass(
mainClass,
JavaPlugin.class,
this.getClass().getClassLoader()
);
} catch (Exception e) {
e.printStackTrace();
return null;
}
}
}

102
java/papkin/src/main/java/org/papkin/PumpkinServerBuildInfo.java Normal file
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package org.papkin;
import io.papermc.paper.ServerBuildInfo;
import java.time.Instant;
import java.time.temporal.ChronoUnit;
import java.util.Optional;
import java.util.OptionalInt;
import net.kyori.adventure.key.Key;
import org.jetbrains.annotations.NotNull;
public final class PumpkinServerBuildInfo implements ServerBuildInfo {
Key brandId;
Instant startTime = Instant.now();
private static final String BUILD_DEV = "DEV";
@Override
public Key brandId() {
this.brandId = Key.key("pumpkinmc:paper");
return brandId;
}
@Override
public boolean isBrandCompatible(Key brandId) {
return (
brandId.equals(this.brandId) ||
brandId.equals(Key.key("papermc:paper"))
);
}
@Override
public String brandName() {
return "Pumpkin";
}
@Override
public String minecraftVersionId() {
return "1.21.10";
}
@Override
public String minecraftVersionName() {
return "1.21.10";
}
@Override
public OptionalInt buildNumber() {
return OptionalInt.empty();
}
@Override
public Instant buildTime() {
return this.startTime;
}
@Override
public Optional<String> gitBranch() {
return Optional.empty();
}
@Override
public Optional<String> gitCommit() {
return Optional.empty();
}
@Override
public @NotNull String asString(
final @NotNull StringRepresentation representation
) {
final StringBuilder sb = new StringBuilder();
sb.append(this.minecraftVersionId());
sb.append('-');
if (this.buildNumber().isPresent()) {
sb.append(this.buildNumber().getAsInt());
} else {
sb.append(BUILD_DEV);
}
final boolean hasGitBranch = this.gitBranch().isPresent();
final boolean hasGitCommit = this.gitCommit().isPresent();
if (hasGitBranch || hasGitCommit) {
sb.append('-');
}
if (
hasGitBranch && representation == StringRepresentation.VERSION_FULL
) {
sb.append(this.gitBranch().get());
if (hasGitCommit) {
sb.append('@');
}
}
if (hasGitCommit) {
sb.append(this.gitCommit().get());
}
if (representation == StringRepresentation.VERSION_FULL) {
sb.append(' ');
sb.append('(');
sb.append(this.buildTime().truncatedTo(ChronoUnit.SECONDS));
sb.append(')');
}
return sb.toString();
}
}

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java/papkin/src/main/java/org/papkin/Versioning.java Normal file
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package org.papkin;
import java.io.IOException;
import java.io.InputStream;
import java.util.Properties;
import java.util.logging.Level;
import java.util.logging.Logger;
import org.bukkit.Bukkit;
public final class Versioning {
public static String getBukkitVersion() {
String result = "Unknown-Version";
InputStream stream = Bukkit.class.getClassLoader().getResourceAsStream(
"META-INF/maven/io.papermc.paper/paper-api/pom.properties"
);
Properties properties = new Properties();
if (stream != null) {
try {
properties.load(stream);
result = properties.getProperty("version");
} catch (IOException ex) {
Logger.getLogger(Versioning.class.getName()).log(
Level.SEVERE,
"Could not get Bukkit version!",
ex
);
}
}
return result;
}
}

1
java/papkin/src/main/resources/META-INF/services/io.papermc.paper.ServerBuildInfo Normal file
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org.papkin.PumpkinServerBuildInfo

14
java/settings.gradle.kts Normal file
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/*
* This file was generated by the Gradle 'init' task.
*
* The settings file is used to specify which projects to include in your build.
* For more detailed information on multi-project builds, please refer to https://docs.gradle.org/8.12.1/userguide/multi_project_builds.html in the Gradle documentation.
*/
plugins {
// Apply the foojay-resolver plugin to allow automatic download of JDKs
id("org.gradle.toolchains.foojay-resolver-convention") version "0.8.0"
}
rootProject.name = "papkin"
include("papkin")

2
rust/.cargo/config.toml Normal file
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[unstable]
bindeps = true

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rust/Cargo.lock generated Normal file
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35
rust/Cargo.toml Normal file
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[package]
name = "papkin"
version = "0.1.0"
edition = "2024"
[lib]
crate-type = ["cdylib"]
[dependencies]
pumpkin = { git = "https://github.com/Pumpkin-MC/Pumpkin.git", branch = "master", package = "pumpkin" }
pumpkin-util = { git = "https://github.com/Pumpkin-MC/Pumpkin.git", branch = "master", package = "pumpkin-util" }
pumpkin-api-macros = { git = "https://github.com/Pumpkin-MC/Pumpkin.git", branch = "master", package = "pumpkin-api-macros" }
async-trait = "0.1"
tokio = "1"
log = "0.4"
glob = "0.3.2"
j4rs = { version = "0.24" }
j4rs_derive = "0.1"
rust-embed = "8.9.0"
walkdir = "2"
zip = "7.1"
serde-saphyr = "0.0.16"
serde = { version = "1", features = ["derive"] }
anyhow = "1.0"
[build-dependencies]
j4rs = { version = "0.24", artifact = "cdylib", lib = true }
env_logger = "0.11.8"
log = "0.4"
[profile.release]
lto = true

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rust/build.rs Normal file
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use std::{
collections::HashSet,
error::Error,
fs,
path::{Path, PathBuf},
};
use j4rs::{JvmBuilder, LocalJarArtifact, MavenArtifact, MavenArtifactRepo, MavenSettings};
fn main() -> Result<(), Box<dyn Error>> {
println!("cargo::rerun-if-changed=rust/src/build.rs");
println!("cargo::rerun-if-changed=java/build/libs/");
env_logger::init();
let dependencies = [
("com.google.guava", "guava", "33.3.1-jre"),
(
"net.md-5",
"bungeecord-chat",
"1.21-R0.2-deprecated+build.21",
),
("net.kyori", "adventure-text-logger-slf4j", "4.25.0"),
("net.kyori", "adventure-text-minimessage", "4.25.0"),
("net.kyori", "adventure-text-serializer-legacy", "4.25.0"),
("net.kyori", "adventure-text-serializer-plain", "4.25.0"),
("net.kyori", "adventure-text-serializer-json", "4.25.0"),
("net.kyori", "adventure-api", "4.25.0"),
("net.kyori", "adventure-key", "4.25.0"),
("net.kyori", "adventure-text-serializer-commons", "4.25.0"),
("net.kyori", "adventure-text-serializer-gson", "4.25.0"),
("com.google.code.gson", "gson", "2.11.0"),
("org.yaml", "snakeyaml", "2.2"),
("org.joml", "joml", "1.10.8"),
("it.unimi.dsi", "fastutil", "8.5.15"),
("org.apache.logging.log4j", "log4j-api", "2.24.1"),
(
"org.apache.maven.resolver",
"maven-resolver-connector-basic",
"1.9.18",
),
(
"org.apache.maven.resolver",
"maven-resolver-transport-http",
"1.9.18",
),
("org.apache.maven", "maven-resolver-provider", "3.9.6"),
("org.apache.maven.resolver", "maven-resolver-impl", "1.9.18"),
("org.slf4j", "jcl-over-slf4j", "1.7.36"),
(
"org.apache.maven.resolver",
"maven-resolver-named-locks",
"1.9.18",
),
("org.slf4j", "slf4j-api", "2.0.16"),
("com.mojang", "brigadier", "1.3.10"),
("org.jspecify", "jspecify", "1.0.0"),
("com.google.guava", "failureaccess", "1.0.2"),
(
"com.google.guava",
"listenablefuture",
"9999.0-empty-to-avoid-conflict-with-guava",
),
("com.google.code.findbugs", "jsr305", "3.0.2"),
("org.checkerframework", "checker-qual", "3.43.0"),
("com.google.errorprone", "error_prone_annotations", "2.28.0"),
("com.google.j2objc", "j2objc-annotations", "3.0.0"),
("org.apache.maven", "maven-model-builder", "3.9.6"),
("org.apache.maven", "maven-model", "3.9.6"),
("org.apache.maven", "maven-repository-metadata", "3.9.6"),
("org.apache.maven.resolver", "maven-resolver-spi", "1.9.18"),
("org.apache.maven.resolver", "maven-resolver-util", "1.9.18"),
("org.apache.maven.resolver", "maven-resolver-api", "1.9.18"),
("org.apache.maven", "maven-artifact", "3.9.6"),
("org.codehaus.plexus", "plexus-utils", "3.5.1"),
("javax.inject", "javax.inject", "1"),
("org.apache.httpcomponents", "httpclient", "4.5.14"),
("org.apache.httpcomponents", "httpcore", "4.4.16"),
("commons-codec", "commons-codec", "1.16.0"),
("net.kyori", "examination-string", "1.3.0"),
("net.kyori", "examination-api", "1.3.0"),
("org.codehaus.plexus", "plexus-interpolation", "1.26"),
("org.apache.maven", "maven-builder-support", "3.9.6"),
("org.eclipse.sisu", "org.eclipse.sisu.inject", "0.9.0.M2"),
("org.apache.commons", "commons-lang3", "3.12.0"),
("net.kyori", "option", "1.1.0"),
("io.papermc.paper", "paper-api", "1.21.11-R0.1-SNAPSHOT"),
];
let jvm = JvmBuilder::new()
.with_maven_settings(MavenSettings::new(vec![MavenArtifactRepo::from(
"papermc::https://repo.papermc.io/repository/maven-public/",
)]))
.skip_setting_native_lib()
.with_base_path(&Path::new("./resources").canonicalize().unwrap())
.build()
.map_err(|err| format!("jvm failed to init: {:?}", err))
.unwrap();
let expected: HashSet<String> = dependencies
.iter()
.map(|d| format!("{}-{}.jar", d.1, d.2))
.collect();
for entry in fs::read_dir("./resources/jassets").unwrap() {
let entry = entry.unwrap();
let file_name = entry.file_name().to_string_lossy().into_owned();
if file_name.starts_with("j4rs-") {
continue;
}
if !expected.contains(&file_name) {
let remove_path = entry.path();
fs::remove_file(remove_path).unwrap();
}
}
if Path::new("./resources/deps").exists() {
fs::remove_dir_all("./resources/deps").unwrap();
}
for dep in dependencies {
if !Path::new(&format!("./resources/jassets/{}-{}.jar", dep.1, dep.2)).exists() {
jvm.deploy_artifact(&MavenArtifact::from(format!(
"{}:{}:{}",
dep.0, dep.1, dep.2
)))
.unwrap();
}
}
if !Path::new("../java/papkin/build/libs/papkin.jar").exists() {
panic!(
"Failed to find papkin.jar, build the java library first by running `gradle build` in the java directory!"
);
}
jvm.deploy_artifact(&LocalJarArtifact::new(
"../java/papkin/build/libs/papkin.jar",
))
.unwrap();
let cdylib = std::env::var("CARGO_CDYLIB_FILE_J4RS").unwrap();
let cdylib = PathBuf::from(cdylib);
let mut cdylib_to = PathBuf::from("./resources/deps");
fs::create_dir_all(&cdylib_to).unwrap();
let original_name = cdylib.file_name().unwrap().to_string_lossy();
let stem = original_name.split('-').next().unwrap(); // before the first '-'
let ext = cdylib.extension().unwrap().to_string_lossy();
cdylib_to.push(format!("{}.{}", stem, ext));
fs::copy(&cdylib, &cdylib_to)
.map_err(|err| format!("Failed to copy j4rs native lib: {:?}", err))
.unwrap();
Ok(())
}

BIN
rust/resources/jassets/j4rs-0.24.0-jar-with-dependencies.jar Normal file
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3
rust/rust-toolchain.toml Normal file
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[toolchain]
channel = "nightly-2025-12-11"
components = ["rust-analyzer", "rust-src"]

2
rust/src/config/mod.rs Normal file
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pub mod paper;
pub mod spigot;

284
rust/src/config/paper.rs Normal file
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use serde::Deserialize;
use std::collections::HashMap;
pub const PAPER_PLUGIN_CONFIG: &str = "paper-plugin.yml";
/// Represents the load order for a dependency
#[derive(Debug, Deserialize, Default, Clone, PartialEq)]
#[serde(rename_all = "UPPERCASE")]
pub enum LoadOrder {
/// Load the dependency before this plugin
Before,
/// Load the dependency after this plugin
After,
/// Undefined ordering behavior
#[default]
Omit,
}
/// Represents a single dependency declaration in Paper plugins
#[derive(Debug, Deserialize, Clone)]
pub struct PaperDependency {
/// Whether this plugin should load before or after your plugin
/// Defaults to OMIT
#[serde(default)]
pub load: LoadOrder,
/// Whether this plugin is required for your plugin to load
/// Defaults to true
#[serde(default = "default_true")]
pub required: bool,
/// Whether your plugin should have access to their classpath
/// Defaults to true
#[serde(rename = "join-classpath")]
#[serde(default = "default_true")]
pub join_classpath: bool,
}
fn default_true() -> bool {
true
}
impl Default for PaperDependency {
fn default() -> Self {
Self {
load: LoadOrder::Omit,
required: true,
join_classpath: true,
}
}
}
/// Represents the dependencies section which is split into bootstrap and server
#[derive(Debug, Deserialize, Default, Clone)]
pub struct PaperDependencies {
/// Dependencies used in the bootstrapper phase
#[serde(default)]
pub bootstrap: Option<HashMap<String, PaperDependency>>,
/// Dependencies used for core functionality during server runtime
#[serde(default)]
pub server: Option<HashMap<String, PaperDependency>>,
}
impl PaperDependencies {
/// Get all bootstrap dependencies
pub fn get_bootstrap_deps(&self) -> Vec<(&String, &PaperDependency)> {
self.bootstrap
.as_ref()
.map(|deps| deps.iter().collect())
.unwrap_or_default()
}
/// Get all server dependencies
pub fn get_server_deps(&self) -> Vec<(&String, &PaperDependency)> {
self.server
.as_ref()
.map(|deps| deps.iter().collect())
.unwrap_or_default()
}
/// Get all required bootstrap dependencies
pub fn get_required_bootstrap_deps(&self) -> Vec<&String> {
self.bootstrap
.as_ref()
.map(|deps| {
deps.iter()
.filter(|(_, dep)| dep.required)
.map(|(name, _)| name)
.collect()
})
.unwrap_or_default()
}
/// Get all required server dependencies
pub fn get_required_server_deps(&self) -> Vec<&String> {
self.server
.as_ref()
.map(|deps| {
deps.iter()
.filter(|(_, dep)| dep.required)
.map(|(name, _)| name)
.collect()
})
.unwrap_or_default()
}
/// Check if a plugin is a bootstrap dependency
pub fn has_bootstrap_dep(&self, name: &str) -> bool {
self.bootstrap
.as_ref()
.map(|deps| deps.contains_key(name))
.unwrap_or(false)
}
/// Check if a plugin is a server dependency
pub fn has_server_dep(&self, name: &str) -> bool {
self.server
.as_ref()
.map(|deps| deps.contains_key(name))
.unwrap_or(false)
}
}
/// The main paper-plugin.yml configuration structure
#[derive(Debug, Deserialize)]
pub struct PaperPluginYml {
// Required fields
/// The name of your plugin
pub name: String,
/// The current version of the plugin
pub version: String,
/// The main class of your plugin (extends JavaPlugin)
pub main: String,
// Optional metadata fields
/// A short description of your plugin
#[serde(default)]
pub description: Option<String>,
/// The author(s) of the plugin
#[serde(default)]
pub author: Option<String>,
/// List of authors
#[serde(default)]
pub authors: Option<Vec<String>>,
/// Contributors to the plugin
#[serde(default)]
pub contributors: Option<Vec<String>>,
/// The website of the plugin
#[serde(default)]
pub website: Option<String>,
// API version
/// The version of the Paper API (e.g., "1.21")
#[serde(rename = "api-version")]
#[serde(default)]
pub api_version: Option<String>,
// Paper-specific fields
/// The bootstrapper class that implements PluginBootstrap
#[serde(default)]
pub bootstrapper: Option<String>,
/// The loader class that implements PluginLoader
#[serde(default)]
pub loader: Option<String>,
// Dependencies (Paper plugin style)
/// Dependencies split into bootstrap and server sections
#[serde(default)]
pub dependencies: Option<PaperDependencies>,
// Optional: provides field (similar to Bukkit)
/// Other plugins this plugin can substitute for
#[serde(default)]
pub provides: Option<Vec<String>>,
}
impl PaperPluginYml {
/// Parse a paper-plugin.yml from a YAML string
pub fn from_str(yaml: &str) -> Result<Self, serde_saphyr::Error> {
serde_saphyr::from_str(yaml)
}
/// Get all authors (combines author and authors fields)
pub fn get_all_authors(&self) -> Vec<String> {
let mut result = Vec::new();
if let Some(ref author) = self.author {
result.push(author.clone());
}
if let Some(ref authors) = self.authors {
result.extend(authors.clone());
}
result
}
/// Check if this plugin has a bootstrapper
pub fn has_bootstrapper(&self) -> bool {
self.bootstrapper.is_some()
}
/// Check if this plugin has a custom loader
pub fn has_loader(&self) -> bool {
self.loader.is_some()
}
/// Get dependencies (returns default if none specified)
pub fn get_dependencies(&self) -> PaperDependencies {
self.dependencies.clone().unwrap_or_default()
}
/// Check if a plugin is required (in either bootstrap or server)
pub fn requires_plugin(&self, name: &str) -> bool {
if let Some(ref deps) = self.dependencies {
// Check bootstrap dependencies
if let Some(ref bootstrap) = deps.bootstrap {
if let Some(dep) = bootstrap.get(name) {
if dep.required {
return true;
}
}
}
// Check server dependencies
if let Some(ref server) = deps.server {
if let Some(dep) = server.get(name) {
if dep.required {
return true;
}
}
}
}
false
}
/// Get all plugins that should load BEFORE this plugin
pub fn get_load_before_deps(&self) -> Vec<String> {
let mut result = Vec::new();
if let Some(ref deps) = self.dependencies {
if let Some(ref bootstrap) = deps.bootstrap {
for (name, dep) in bootstrap {
if dep.load == LoadOrder::Before {
result.push(name.clone());
}
}
}
if let Some(ref server) = deps.server {
for (name, dep) in server {
if dep.load == LoadOrder::Before {
result.push(name.clone());
}
}
}
}
result
}
/// Get all plugins that should load AFTER this plugin
pub fn get_load_after_deps(&self) -> Vec<String> {
let mut result = Vec::new();
if let Some(ref deps) = self.dependencies {
if let Some(ref bootstrap) = deps.bootstrap {
for (name, dep) in bootstrap {
if dep.load == LoadOrder::After {
result.push(name.clone());
}
}
}
if let Some(ref server) = deps.server {
for (name, dep) in server {
if dep.load == LoadOrder::After {
result.push(name.clone());
}
}
}
}
result
}
}

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rust/src/config/spigot.rs Normal file
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@ -0,0 +1,193 @@
use std::collections::HashMap;
use serde::Deserialize;
pub const SPIGOT_PLUGIN_CONFIG: &str = "plugin.yml";
/// Represents when a plugin should be loaded
#[derive(Debug, Deserialize, Default, Clone, PartialEq)]
#[serde(rename_all = "UPPERCASE")]
pub enum LoadOrder {
Startup,
#[default]
Postworld,
}
/// Represents the default permission value
#[derive(Debug, Deserialize, Clone, PartialEq)]
#[serde(rename_all = "lowercase")]
pub enum DefaultPermission {
Op,
#[serde(alias = "notop")]
NotOp,
True,
False,
}
impl Default for DefaultPermission {
fn default() -> Self {
DefaultPermission::Op
}
}
/// Represents a permission node definition
#[derive(Debug, Deserialize, Clone)]
pub struct Permission {
#[serde(default)]
pub description: Option<String>,
#[serde(default)]
pub default: Option<DefaultPermission>,
#[serde(default)]
pub children: Option<HashMap<String, bool>>,
}
/// Represents a command definition
#[derive(Debug, Deserialize, Clone)]
pub struct Command {
#[serde(default)]
pub description: Option<String>,
#[serde(default)]
pub usage: Option<String>,
#[serde(default)]
pub aliases: Option<StringOrList>,
#[serde(default)]
pub permission: Option<String>,
#[serde(rename = "permission-message")]
#[serde(default)]
pub permission_message: Option<String>,
}
/// Helper type to handle fields that can be either a single string or a list of strings
#[derive(Debug, Deserialize, Clone)]
#[serde(untagged)]
pub enum StringOrList {
Single(String),
Multiple(Vec<String>),
}
impl StringOrList {
/// Convert to a Vec<String> regardless of the variant
pub fn to_vec(&self) -> Vec<String> {
match self {
StringOrList::Single(s) => vec![s.clone()],
StringOrList::Multiple(v) => v.clone(),
}
}
}
/// The main plugin.yml configuration structure
#[derive(Debug, Deserialize)]
pub struct SpigotPluginYml {
// Required fields
/// The name of your plugin
pub name: String,
/// The current version of the plugin
pub version: String,
/// The main class of your plugin (extends JavaPlugin)
pub main: String,
// Optional metadata fields
/// A short description of your plugin
#[serde(default)]
pub description: Option<String>,
/// The author(s) of the plugin (can be single or list)
#[serde(default)]
pub author: Option<String>,
/// List of authors (alternative to single author)
#[serde(default)]
pub authors: Option<Vec<String>>,
/// Contributors to the plugin
#[serde(default)]
pub contributors: Option<Vec<String>>,
/// The website of the plugin
#[serde(default)]
pub website: Option<String>,
// API and loading configuration
/// The version of the Paper API (e.g., "1.21")
#[serde(rename = "api-version")]
#[serde(default)]
pub api_version: Option<String>,
/// When to load the plugin (STARTUP or POSTWORLD)
#[serde(default)]
pub load: Option<LoadOrder>,
/// The prefix for log messages
#[serde(default)]
pub prefix: Option<String>,
// Dependencies
/// Plugins that must be present for this plugin to load
#[serde(default)]
pub depend: Option<Vec<String>>,
/// Plugins that enhance functionality if present
#[serde(default)]
pub softdepend: Option<Vec<String>>,
/// Plugins that this plugin should load before
#[serde(default)]
pub loadbefore: Option<Vec<String>>,
/// Other plugins this plugin can substitute for
#[serde(default)]
pub provides: Option<Vec<String>>,
// Libraries
/// Maven dependencies to download
#[serde(default)]
pub libraries: Option<Vec<String>>,
// Commands and permissions
/// Command definitions
#[serde(default)]
pub commands: Option<HashMap<String, Command>>,
/// Permission definitions
#[serde(default)]
pub permissions: Option<HashMap<String, Permission>>,
/// Default permission value for unspecified permissions
#[serde(rename = "default-permission")]
#[serde(default)]
pub default_permission: Option<DefaultPermission>,
// Paper-specific fields
/// Paper plugin loader class
#[serde(rename = "paper-plugin-loader")]
#[serde(default)]
pub paper_plugin_loader: Option<String>,
/// Skip library resolution (delegate to loader)
#[serde(rename = "paper-skip-libraries")]
#[serde(default)]
pub paper_skip_libraries: Option<bool>,
}
impl SpigotPluginYml {
/// Parse a plugin.yml from a YAML string
pub fn from_str(yaml: &str) -> Result<Self, serde_saphyr::Error> {
serde_saphyr::from_str(yaml)
}
/// Get all authors (combines author and authors fields)
pub fn get_all_authors(&self) -> Vec<String> {
let mut result = Vec::new();
if let Some(ref author) = self.author {
result.push(author.clone());
}
if let Some(ref authors) = self.authors {
result.extend(authors.clone());
}
result
}
/// Check if this plugin depends on another plugin
pub fn depends_on(&self, plugin_name: &str) -> bool {
if let Some(ref deps) = self.depend {
return deps.iter().any(|d| d == plugin_name);
}
false
}
/// Check if this plugin soft-depends on another plugin
pub fn soft_depends_on(&self, plugin_name: &str) -> bool {
if let Some(ref deps) = self.softdepend {
return deps.iter().any(|d| d == plugin_name);
}
false
}
}

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use std::{fs, path::PathBuf};
use pumpkin::plugin::Context;
pub struct PapkinDirectories {
pub base: PathBuf,
pub plugins: PathBuf,
pub plugin_updates: PathBuf,
pub j4rs: PathBuf,
pub jassets: PathBuf,
}
pub fn setup_directories(server: &Context) -> Result<PapkinDirectories, String> {
let base = server
.get_data_folder()
.canonicalize()
.map_err(|_| "Failed to get absolute directory from relative")?;
let plugins = base.join("papkin-plugins");
let plugin_updates = plugins.join("update");
let j4rs = base.join("j4rs");
let jassets = j4rs.join("jassets");
fs::create_dir_all(&plugin_updates)
.map_err(|err| format!("Failed to create plugin folder: {:?}", err))?;
fs::create_dir_all(&jassets)
.map_err(|err| format!("Failed to create jassets folder: {:?}", err))?;
Ok(PapkinDirectories {
base,
plugins,
plugin_updates,
j4rs,
jassets,
})
}

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use std::{
fs::File,
io::Read,
path::{Path, PathBuf},
};
use anyhow::Result;
use glob::glob;
use zip::ZipArchive;
use crate::config::{paper::PAPER_PLUGIN_CONFIG, spigot::SPIGOT_PLUGIN_CONFIG};
pub fn discover_jar_files(plugin_folder: &PathBuf) -> Vec<PathBuf> {
let pattern = format!("{}/**/*.jar", plugin_folder.to_string_lossy());
let mut entries = Vec::new();
for entry in glob(&pattern).expect("Failed to read glob pattern") {
match entry {
Ok(inner_path) => match inner_path.canonicalize() {
Ok(path) => entries.push(path),
Err(e) => log::error!("Failed to convert path to string: {:?}", e),
},
Err(e) => log::error!("Failed to canonicalize path: {:?}", e),
}
}
entries
}
pub fn read_configs_from_jar<P: AsRef<Path>>(
jar_path: P,
) -> Result<(Option<String>, Option<String>)> {
let file = File::open(jar_path.as_ref())?;
let mut archive = ZipArchive::new(file)?;
let paper_plugin_yml = match archive.by_name(PAPER_PLUGIN_CONFIG).ok() {
Some(mut file) => {
let mut content = String::new();
file.read_to_string(&mut content)?;
Some(content)
}
None => None,
};
let spigot_plugin_yml = match archive.by_name(SPIGOT_PLUGIN_CONFIG).ok() {
Some(mut file) => {
let mut content = String::new();
file.read_to_string(&mut content)?;
Some(content)
}
None => None,
};
Ok((paper_plugin_yml, spigot_plugin_yml))
}

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use j4rs::prelude::*;
use j4rs_derive::*;
#[call_from_java("io.github.astonbitecode.j4rs.example.RustSimpleFunctionCall.fnnoargs")]
fn my_function_with_no_args() {
println!("Hello from the Rust world!");
// If you need to have a Jvm here, you need to attach the thread
let _jvm = Jvm::attach_thread().unwrap();
// Now you may further call Java classes and methods as usual!
}

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use std::path::PathBuf;
use j4rs::{ClasspathEntry, InvocationArg, Jvm, JvmBuilder};
pub fn initialize_jvm(
classpath_entries: Vec<ClasspathEntry>,
j4rs_folder: &PathBuf,
) -> Result<Jvm, String> {
let jvm = JvmBuilder::new()
.classpath_entries(classpath_entries)
.with_base_path(j4rs_folder)
.build()
.map_err(|err| format!("JVM failed to init: {:?}", err))?;
Ok(jvm)
}
pub fn setup_papkin_server(jvm: &Jvm) -> Result<(), String> {
let papkin_server = jvm
.create_instance("org.papkin.PapkinServer", InvocationArg::empty())
.map_err(|err| format!("Failed to create PapkinServer instance: {:?}", err))?;
jvm.invoke_static(
"org.bukkit.Bukkit",
"setServer",
&[InvocationArg::from(papkin_server)],
)
.map_err(|err| format!("Failed to set Bukkit server: {:?}", err))?;
Ok(())
}

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pub mod jar;
pub mod java_to_rust;
pub mod jvm;
pub mod resources;

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use std::{collections::HashSet, fs, path::PathBuf};
use rust_embed::Embed;
#[derive(Embed)]
#[folder = "resources/"]
pub struct Resources;
pub fn cleanup_stale_files(j4rs_folder: &PathBuf) {
let allowed: HashSet<String> = Resources::iter().map(|p| p.to_string()).collect();
for entry in walkdir::WalkDir::new(j4rs_folder)
.into_iter()
.filter_map(|e| e.ok())
.filter(|e| e.file_type().is_file())
{
let rel_path = entry
.path()
.strip_prefix(j4rs_folder)
.unwrap()
.to_string_lossy()
.to_string();
if !allowed.contains(&rel_path) {
log::warn!("Removing stale j4rs file: {rel_path}");
let _ = fs::remove_file(entry.path());
}
}
}
pub fn sync_embedded_resources(j4rs_folder: &PathBuf) -> Result<(), String> {
for resource_path_str in Resources::iter() {
let resource_path = j4rs_folder.join(resource_path_str.to_string());
let resource = Resources::get(&resource_path_str).unwrap();
if !resource_path.exists() {
write_resource(&resource_path, &resource.data)?;
} else {
update_resource_if_changed(&resource_path, &resource.data)?;
}
}
Ok(())
}
fn write_resource(path: &PathBuf, data: &[u8]) -> Result<(), String> {
let parent = path.parent().ok_or("Resource has no parent directory")?;
fs::create_dir_all(parent)
.map_err(|err| format!("Failed to create parent for resource: {:?}", err))?;
fs::write(path, data).map_err(|err| format!("Failed to add resource: {:?}", err))
}
fn update_resource_if_changed(path: &PathBuf, new_data: &[u8]) -> Result<(), String> {
let old_data = fs::read(path).map_err(|err| format!("Failed to read resource: {:?}", err))?;
if new_data != old_data {
fs::write(path, new_data).map_err(|err| format!("Failed to update resource: {:?}", err))?;
}
Ok(())
}

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use std::sync::Arc;
use j4rs::ClasspathEntry;
use pumpkin::plugin::Context;
use pumpkin_api_macros::{plugin_impl, plugin_method};
pub mod config;
pub mod directories;
pub mod java;
pub mod plugin;
use directories::setup_directories;
use java::{
jar::discover_jar_files,
jvm::{initialize_jvm, setup_papkin_server},
resources::{cleanup_stale_files, sync_embedded_resources},
};
use crate::{java::jar::read_configs_from_jar, plugin::manager::PluginManager};
async fn on_load_inner(_plugin: &mut MyPlugin, server: Arc<Context>) -> Result<(), String> {
server.init_log();
log::info!("Starting Papkin");
// Setup directories
let dirs = setup_directories(&server)?;
let mut plugin_manager = PluginManager::new();
// Discover and prepare JAR files
let jar_paths = discover_jar_files(&dirs.plugins);
for jar_path in &jar_paths {
match read_configs_from_jar(jar_path) {
Ok(configs) => match configs {
(Some(paper_plugin_config), spigot @ _) => {
match plugin_manager.load_paper_plugin(jar_path, &paper_plugin_config, &spigot)
{
Ok(_) => log::info!("Loaded Paper plugin from JAR: {}", jar_path.display()),
Err(err) => log::error!("Failed to load Paper plugin from JAR: {}", err),
}
}
(None, Some(spigot)) => {
match plugin_manager.load_spigot_plugin(jar_path, &spigot) {
Ok(_) => {
log::info!("Loaded Spigot plugin from JAR: {}", jar_path.display())
}
Err(err) => log::error!("Failed to load Spigot plugin from JAR: {}", err),
}
}
(None, None) => log::warn!(
"Could not find any plugin configuration in JAR: {}",
jar_path.display()
),
},
Err(err) => {
log::error!("Failed to read configs from papkin plugin jar: {}", err);
}
}
}
let classpath_entries = jar_paths
.iter()
.map(|entry| ClasspathEntry::new(entry))
.collect();
// Manage embedded resources
cleanup_stale_files(&dirs.j4rs);
sync_embedded_resources(&dirs.j4rs)?;
// Initialize JVM and Papkin server
let jvm = initialize_jvm(classpath_entries, &dirs.j4rs)?;
setup_papkin_server(&jvm)?;
plugin_manager
.load_all_plugins(&jvm)
.map_err(|err| format!("Failed to load papkin plugins: {}", err))?;
plugin_manager
.enable_all_plugins(&jvm)
.map_err(|err| format!("Failed to enable papkin plugins: {}", err))?;
Ok(())
}
#[plugin_method]
async fn on_load(&mut self, server: Arc<Context>) -> Result<(), String> {
on_load_inner(self, server).await
}
#[plugin_impl]
pub struct MyPlugin {}
impl MyPlugin {
pub fn new() -> Self {
MyPlugin {}
}
}
impl Default for MyPlugin {
fn default() -> Self {
Self::new()
}
}

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use std::path::{Path, PathBuf};
use anyhow::Result;
use j4rs::{Instance, InvocationArg, Jvm};
use crate::config::{paper::PaperPluginYml, spigot::SpigotPluginYml};
#[derive(Debug, Clone, Copy, PartialEq, Eq)]
pub enum PluginState {
/// Plugin config has been loaded, but not yet initialized in JVM
Registered,
/// Plugin class has been loaded and instance created
Loaded,
/// Plugin is enabled (onEnable called)
Enabled,
/// Plugin is disabled (onDisable called)
Disabled,
/// Plugin failed to load or enable
Errored,
}
#[derive(Debug)]
pub enum PluginType {
Paper(PaperPluginData),
Spigot(SpigotPluginData),
}
#[derive(Debug)]
pub struct PaperPluginData {
pub paper_config: PaperPluginYml,
pub spigot_config: Option<SpigotPluginYml>,
}
#[derive(Debug)]
pub struct SpigotPluginData {
pub spigot_config: SpigotPluginYml,
}
pub struct Plugin {
/// Unique plugin name
pub name: String,
/// Plugin version
pub version: String,
/// Main class fully qualified name
pub main_class: String,
/// Path to the JAR file
pub path: PathBuf,
/// Plugin-specific data (Paper or Spigot)
pub plugin_type: PluginType,
/// Current state
pub state: PluginState,
/// Data folder for this plugin
pub data_folder: PathBuf,
pub instance: Option<Instance>,
}
pub struct PluginManager {
plugins: Vec<Plugin>,
}
impl PluginManager {
pub fn new() -> Self {
Self {
plugins: Vec::new(),
}
}
pub fn add_plugin(&mut self, plugin: Plugin) {
self.plugins.push(plugin);
}
pub fn load_paper_plugin<P: AsRef<Path>>(
&mut self,
jar_path: P,
paper_plugin_config: &str,
spigot_plugin_config: &Option<String>,
) -> Result<()> {
let parsed_paper_plugin = PaperPluginYml::from_str(paper_plugin_config)?;
let parsed_spigot_plugin = match spigot_plugin_config {
Some(config) => Some(SpigotPluginYml::from_str(config)?),
None => None,
};
let plugin = Plugin {
name: parsed_paper_plugin.name.clone(),
version: parsed_paper_plugin.version.clone(),
main_class: parsed_paper_plugin.main.clone(),
plugin_type: PluginType::Paper(PaperPluginData {
paper_config: parsed_paper_plugin,
spigot_config: parsed_spigot_plugin,
}),
state: PluginState::Registered,
data_folder: jar_path.as_ref().parent().unwrap().join("data"),
path: jar_path.as_ref().to_path_buf(),
instance: None,
};
self.add_plugin(plugin);
Ok(())
}
pub fn load_spigot_plugin<P: AsRef<Path>>(
&mut self,
jar_path: P,
spigot_plugin_config: &str,
) -> Result<()> {
let parsed_spigot_plugin = SpigotPluginYml::from_str(spigot_plugin_config)?;
let plugin = Plugin {
name: parsed_spigot_plugin.name.clone(),
version: parsed_spigot_plugin.version.clone(),
main_class: parsed_spigot_plugin.main.clone(),
plugin_type: PluginType::Spigot(SpigotPluginData {
spigot_config: parsed_spigot_plugin,
}),
state: PluginState::Registered,
data_folder: jar_path.as_ref().parent().unwrap().join("data"),
path: jar_path.as_ref().to_path_buf(),
instance: None,
};
self.add_plugin(plugin);
Ok(())
}
pub fn enable_all_plugins(&mut self, jvm: &Jvm) -> Result<()> {
for plugin in &mut self.plugins {
let result = jvm.invoke(
plugin.instance.as_ref().unwrap(),
"onEnable",
InvocationArg::empty(),
);
match result {
Ok(_) => {
plugin.state = PluginState::Enabled;
log::info!("Enabled papkin plugin: {}", plugin.name);
}
Err(e) => {
plugin.state = PluginState::Errored;
log::error!("Failed to enable papkin plugin {}: {:?}", plugin.name, e);
}
}
}
Ok(())
}
pub fn load_all_plugins(&mut self, jvm: &Jvm) -> Result<()> {
let loader =
jvm.create_instance("org.papkin.loader.PluginLoader", InvocationArg::empty())?;
for plugin in &mut self.plugins {
let result = jvm.invoke(
&loader,
"createPlugin",
&[InvocationArg::try_from(&plugin.main_class)?],
);
match result {
Ok(instance) => {
plugin.instance = Some(instance);
plugin.state = PluginState::Loaded;
log::info!("Loaded papkin plugin: {}", plugin.name);
}
Err(e) => {
plugin.state = PluginState::Errored;
log::error!("Failed to load papkin plugin {}: {:?}", plugin.name, e);
}
}
}
Ok(())
}
}

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pub mod manager;