diff --git a/.idea/.gitignore b/.idea/.gitignore new file mode 100644 index 0000000..26d3352 --- /dev/null +++ b/.idea/.gitignore @@ -0,0 +1,3 @@ +# Default ignored files +/shelf/ +/workspace.xml diff --git a/.idea/checkstyle-idea.xml b/.idea/checkstyle-idea.xml new file mode 100644 index 0000000..1a76375 --- /dev/null +++ b/.idea/checkstyle-idea.xml @@ -0,0 +1,16 @@ + + + + + + \ No newline at end of file diff --git a/.idea/compiler.xml b/.idea/compiler.xml new file mode 100644 index 0000000..b9ef655 --- /dev/null +++ b/.idea/compiler.xml @@ -0,0 +1,43 @@ + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/gradle.xml b/.idea/gradle.xml new file mode 100644 index 0000000..611e7c8 --- /dev/null +++ b/.idea/gradle.xml @@ -0,0 +1,17 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/jarRepositories.xml b/.idea/jarRepositories.xml new file mode 100644 index 0000000..0d49dac --- /dev/null +++ b/.idea/jarRepositories.xml @@ -0,0 +1,25 @@ + + + + + + + + + + + + + \ No newline at end of file diff --git a/.idea/misc.xml b/.idea/misc.xml new file mode 100644 index 0000000..7eec1db --- /dev/null +++ b/.idea/misc.xml @@ -0,0 +1,7 @@ + + + + + + + \ No newline at end of file diff --git a/.idea/modules/Ambassador.main.iml b/.idea/modules/Ambassador.main.iml new file mode 100644 index 0000000..4a4ce55 --- /dev/null +++ b/.idea/modules/Ambassador.main.iml @@ -0,0 +1,8 @@ + + + + + + \ No newline at end of file diff --git a/build.gradle b/build.gradle new file mode 100644 index 0000000..95b4aeb --- /dev/null +++ b/build.gradle @@ -0,0 +1,18 @@ +plugins { + id 'java' +} + +group 'org.adde0109' +version '1.0-SNAPSHOT' + +repositories { + maven { + name 'papermc' + url 'https://repo.papermc.io/repository/maven-public/' + } +} + +dependencies { + implementation 'com.velocitypowered:velocity-api:3.1.2-SNAPSHOT' + annotationProcessor 'com.velocitypowered:velocity-api:3.1.2-SNAPSHOT' +} diff --git a/gradle/wrapper/gradle-wrapper.jar b/gradle/wrapper/gradle-wrapper.jar new file mode 100644 index 0000000..7454180 Binary files /dev/null and b/gradle/wrapper/gradle-wrapper.jar differ diff --git a/gradle/wrapper/gradle-wrapper.properties b/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..69a9715 --- /dev/null +++ b/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,5 @@ +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +distributionUrl=https\://services.gradle.org/distributions/gradle-7.1-bin.zip +zipStoreBase=GRADLE_USER_HOME +zipStorePath=wrapper/dists diff --git a/gradlew b/gradlew new file mode 100644 index 0000000..744e882 --- /dev/null +++ b/gradlew @@ -0,0 +1,185 @@ +#!/usr/bin/env sh + +# +# Copyright 2015 the original author or 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. +# + +############################################################################## +## +## Gradle start up script for UN*X +## +############################################################################## + +# Attempt to set APP_HOME +# Resolve links: $0 may be a link +PRG="$0" +# Need this for relative symlinks. +while [ -h "$PRG" ] ; do + ls=`ls -ld "$PRG"` + link=`expr "$ls" : '.*-> \(.*\)$'` + if expr "$link" : '/.*' > /dev/null; then + PRG="$link" + else + PRG=`dirname "$PRG"`"/$link" + fi +done +SAVED="`pwd`" +cd "`dirname \"$PRG\"`/" >/dev/null +APP_HOME="`pwd -P`" +cd "$SAVED" >/dev/null + +APP_NAME="Gradle" +APP_BASE_NAME=`basename "$0"` + +# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script. +DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"' + +# Use the maximum available, or set MAX_FD != -1 to use that value. +MAX_FD="maximum" + +warn () { + echo "$*" +} + +die () { + echo + echo "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MSYS* | MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$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: $JAVA_HOME + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." + fi +else + JAVACMD="java" + which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. + +Please set the JAVA_HOME variable in your environment to match the +location of your Java installation." +fi + +# Increase the maximum file descriptors if we can. +if [ "$cygwin" = "false" -a "$darwin" = "false" -a "$nonstop" = "false" ] ; then + MAX_FD_LIMIT=`ulimit -H -n` + if [ $? -eq 0 ] ; then + if [ "$MAX_FD" = "maximum" -o "$MAX_FD" = "max" ] ; then + MAX_FD="$MAX_FD_LIMIT" + fi + ulimit -n $MAX_FD + if [ $? -ne 0 ] ; then + warn "Could not set maximum file descriptor limit: $MAX_FD" + fi + else + warn "Could not query maximum file descriptor limit: $MAX_FD_LIMIT" + fi +fi + +# For Darwin, add options to specify how the application appears in the dock +if $darwin; then + GRADLE_OPTS="$GRADLE_OPTS \"-Xdock:name=$APP_NAME\" \"-Xdock:icon=$APP_HOME/media/gradle.icns\"" +fi + +# For Cygwin or MSYS, switch paths to Windows format before running java +if [ "$cygwin" = "true" -o "$msys" = "true" ] ; then + APP_HOME=`cygpath --path --mixed "$APP_HOME"` + CLASSPATH=`cygpath --path --mixed "$CLASSPATH"` + + JAVACMD=`cygpath --unix "$JAVACMD"` + + # We build the pattern for arguments to be converted via cygpath + ROOTDIRSRAW=`find -L / -maxdepth 1 -mindepth 1 -type d 2>/dev/null` + SEP="" + for dir in $ROOTDIRSRAW ; do + ROOTDIRS="$ROOTDIRS$SEP$dir" + SEP="|" + done + OURCYGPATTERN="(^($ROOTDIRS))" + # Add a user-defined pattern to the cygpath arguments + if [ "$GRADLE_CYGPATTERN" != "" ] ; then + OURCYGPATTERN="$OURCYGPATTERN|($GRADLE_CYGPATTERN)" + fi + # Now convert the arguments - kludge to limit ourselves to /bin/sh + i=0 + for arg in "$@" ; do + CHECK=`echo "$arg"|egrep -c "$OURCYGPATTERN" -` + CHECK2=`echo "$arg"|egrep -c "^-"` ### Determine if an option + + if [ $CHECK -ne 0 ] && [ $CHECK2 -eq 0 ] ; then ### Added a condition + eval `echo args$i`=`cygpath --path --ignore --mixed "$arg"` + else + eval `echo args$i`="\"$arg\"" + fi + i=`expr $i + 1` + done + case $i in + 0) set -- ;; + 1) set -- "$args0" ;; + 2) set -- "$args0" "$args1" ;; + 3) set -- "$args0" "$args1" "$args2" ;; + 4) set -- "$args0" "$args1" "$args2" "$args3" ;; + 5) set -- "$args0" "$args1" "$args2" "$args3" "$args4" ;; + 6) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" ;; + 7) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" ;; + 8) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" ;; + 9) set -- "$args0" "$args1" "$args2" "$args3" "$args4" "$args5" "$args6" "$args7" "$args8" ;; + esac +fi + +# Escape application args +save () { + for i do printf %s\\n "$i" | sed "s/'/'\\\\''/g;1s/^/'/;\$s/\$/' \\\\/" ; done + echo " " +} +APP_ARGS=`save "$@"` + +# Collect all arguments for the java command, following the shell quoting and substitution rules +eval set -- $DEFAULT_JVM_OPTS $JAVA_OPTS $GRADLE_OPTS "\"-Dorg.gradle.appname=$APP_BASE_NAME\"" -classpath "\"$CLASSPATH\"" org.gradle.wrapper.GradleWrapperMain "$APP_ARGS" + +exec "$JAVACMD" "$@" diff --git a/gradlew.bat b/gradlew.bat new file mode 100644 index 0000000..107acd3 --- /dev/null +++ b/gradlew.bat @@ -0,0 +1,89 @@ +@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 + +@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=. +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%" == "0" goto execute + +echo. +echo ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH. +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +goto fail + +:findJavaFromJavaHome +set JAVA_HOME=%JAVA_HOME:"=% +set JAVA_EXE=%JAVA_HOME%/bin/java.exe + +if exist "%JAVA_EXE%" goto execute + +echo. +echo ERROR: JAVA_HOME is set to an invalid directory: %JAVA_HOME% +echo. +echo Please set the JAVA_HOME variable in your environment to match the +echo location of your Java installation. + +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%"=="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! +if not "" == "%GRADLE_EXIT_CONSOLE%" exit 1 +exit /b 1 + +:mainEnd +if "%OS%"=="Windows_NT" endlocal + +:omega diff --git a/settings.gradle b/settings.gradle new file mode 100644 index 0000000..d98a80b --- /dev/null +++ b/settings.gradle @@ -0,0 +1,2 @@ +rootProject.name = 'Ambassador' + diff --git a/src/main/java/org/adde0109/ambassador/main.java b/src/main/java/org/adde0109/ambassador/main.java new file mode 100644 index 0000000..7dc4b87 --- /dev/null +++ b/src/main/java/org/adde0109/ambassador/main.java @@ -0,0 +1,180 @@ +package org.adde0109.ambassador; + +import com.google.common.io.ByteArrayDataInput; +import com.google.inject.Inject; +import com.velocitypowered.api.event.Continuation; +import com.velocitypowered.api.event.EventTask; +import com.velocitypowered.api.event.Subscribe; +import com.velocitypowered.api.event.connection.PreLoginEvent; +import com.velocitypowered.api.event.player.ServerLoginPluginMessageEvent; +import com.velocitypowered.api.plugin.Plugin; +import com.velocitypowered.api.proxy.LoginPhaseConnection; +import com.velocitypowered.api.proxy.ProxyServer; +import com.velocitypowered.api.proxy.messages.ChannelIdentifier; +import com.velocitypowered.api.proxy.messages.MinecraftChannelIdentifier; +import com.velocitypowered.api.proxy.server.RegisteredServer; +import com.velocitypowered.api.proxy.server.ServerPing; +import com.velocitypowered.api.util.ModInfo; +import java.io.EOFException; +import org.checkerframework.checker.nullness.qual.Nullable; +import org.checkerframework.checker.units.qual.A; +import org.slf4j.Logger; + +import java.nio.charset.StandardCharsets; +import java.util.*; +import java.util.stream.Stream; + +@Plugin(id = "ambassador", name = "Ambassador", version = "0.1.0-SNAPSHOT", url = "", description = "", authors = {"adde0109"}) +public class main { + + private final ProxyServer server; + private final Logger logger; + private final RegisteredServer forgeServer; + + private LoginPhaseConnection inbound; + private ChannelIdentifier loginWrapperChannel; + + private static final int MAX_DATA_LENGTH = 16000; + private static final int PACKET_LENGTH_INDEX = 14; + + @Inject + public main(ProxyServer server, Logger logger) { + this.server = server; + this.logger = logger; + forgeServer = server.getServer("lobby").orElseThrow(IllegalAccessError::new); + + loginWrapperChannel = MinecraftChannelIdentifier.create("fml","loginwrapper"); + } + + private int numberOfRecivedParts; + private byte[] recivedParts; + private int recivedBytes; + private int head; + + private byte[] recivedClientModlist; + private byte[] recivedClientACK; + + + + @Subscribe + public void onPreLoginEvent(PreLoginEvent event, Continuation continuation) { + inbound = (LoginPhaseConnection) event.getConnection(); + + recivedParts = new byte[1000000000]; + recivedBytes = 0; + numberOfRecivedParts = 0; + ping(continuation); + + } + + private void ping(Continuation continuation) { + forgeServer.ping().thenAccept((s) -> onBackendPong(s,continuation)); + } + + + public void onBackendPong(ServerPing status, Continuation continuation) { + numberOfRecivedParts++; + + ModInfo.Mod pair = status.getModinfo().orElseThrow(IllegalAccessError::new).getMods().get(0); + + int[] values = Arrays.stream(pair.getVersion().substring(pair.getVersion().indexOf(":")+1).split(":")).map(Integer::parseInt).mapToInt(x -> x).toArray(); + + int parts = Integer.parseInt((pair.getVersion().split(":")[0].split("-"))[1]); + int recivedPartNr = Integer.parseInt((pair.getVersion().split(":")[0].split("-"))[0]); + + logger.warn("recived part " + String.valueOf(numberOfRecivedParts) + " out of " + String.valueOf(parts)); + + + byte[] temp = pair.getId().getBytes(StandardCharsets.ISO_8859_1); + head = (recivedPartNr-1)*MAX_DATA_LENGTH; + for(int i = 0;i= parts) + { + sendHandshake(splitPacket(recivedParts,values)); + continuation.resume(); + } + else { + ping(continuation); + logger.warn("Pinged!"); + } + } + private List splitPacket(byte[] data, int[] startPacketMarkers) { + List list = new ArrayList<>(); + for(int i = 0;i handshakePackets) { + handshakePackets.forEach((packet) -> { + inbound.sendLoginPluginMessage(loginWrapperChannel, packet, new LoginPhaseConnection.MessageConsumer() { + @Override + public void onMessageResponse(byte @Nullable [] responseBody) { + if (responseBody.length < PACKET_LENGTH_INDEX+5+5) { + logger.warn("ACK recived!"); + recivedClientACK = responseBody; + } + else { + logger.warn("Modlist recived!"); + recivedClientModlist = responseBody; + } + } + }); + }); + } + + @Subscribe + public void onServerLoginPluginMessageEvent(ServerLoginPluginMessageEvent event, Continuation continuation) { + ByteArrayDataInput data = event.contentsAsDataStream(); + if(data.skipBytes(PACKET_LENGTH_INDEX) != PACKET_LENGTH_INDEX) //Channel Identifier + continuation.resumeWithException(new EOFException()); + readVarInt(data); //Length + int packetID = readVarInt(data); + + if(packetID == 1) { + event.setResult(ServerLoginPluginMessageEvent.ResponseResult.reply(recivedClientModlist)); + } + else { + event.setResult(ServerLoginPluginMessageEvent.ResponseResult.reply(recivedClientACK)); + } + continuation.resume(); + + } + + + public static int readVarInt(ByteArrayDataInput stream) { + int i = 0; + int j = 0; + + byte b0; + do { + b0 = stream.readByte(); + i |= (b0 & 127) << j++ * 7; + if (j > 5) { + throw new RuntimeException("VarInt too big"); + } + } while((b0 & 128) == 128); + + return i; + } + + +}