diff --git a/examples/socket/Get server info/.gitattributes b/examples/socket/Get server info/.gitattributes new file mode 100644 index 0000000..85ccea0 --- /dev/null +++ b/examples/socket/Get server info/.gitattributes @@ -0,0 +1,3 @@ +gradlew text eol=lf +gradlew.bat -text +gradle/wrapper/gradle-wrapper.properties text eol=lf \ No newline at end of file diff --git a/examples/socket/Get server info/.gitignore b/examples/socket/Get server info/.gitignore new file mode 100644 index 0000000..e3f8df2 --- /dev/null +++ b/examples/socket/Get server info/.gitignore @@ -0,0 +1,12 @@ +## IDEA ## +.idea/ +out/ +*.iml +*.ipr +*.iws +*.ids + +## GRADLE ## +.gradle/ +build/ +gradle/wrapper/gradle-wrapper.jar diff --git a/examples/socket/Get server info/build.gradle b/examples/socket/Get server info/build.gradle new file mode 100644 index 0000000..46e654a --- /dev/null +++ b/examples/socket/Get server info/build.gradle @@ -0,0 +1,19 @@ +plugins { + id 'java' +} + +compileJava { + sourceCompatibility = 1.8 + targetCompatibility = 1.8 + options.encoding = 'UTF-8' +} + +repositories { + mavenLocal() + mavenCentral() + maven { url 'https://dmx-mc-project.gitlab.io/maven-repository/' } +} + +dependencies { + compile 'mc-project:mc-protocol:0.1' +} \ No newline at end of file diff --git a/examples/socket/Get server info/gradle/wrapper/gradle-wrapper.properties b/examples/socket/Get server info/gradle/wrapper/gradle-wrapper.properties new file mode 100644 index 0000000..0d04c6f --- /dev/null +++ b/examples/socket/Get server info/gradle/wrapper/gradle-wrapper.properties @@ -0,0 +1,6 @@ +# suppress inspection "UnusedProperty" for whole file +distributionUrl=https\://services.gradle.org/distributions/gradle-6.5.1-all.zip +distributionBase=GRADLE_USER_HOME +distributionPath=wrapper/dists +zipStorePath=wrapper/dists +zipStoreBase=GRADLE_USER_HOME diff --git a/examples/socket/Get server info/gradlew b/examples/socket/Get server info/gradlew new file mode 100644 index 0000000..2fe81a7 --- /dev/null +++ b/examples/socket/Get server info/gradlew @@ -0,0 +1,183 @@ +#!/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 "$*" + echo + exit 1 +} + +# OS specific support (must be 'true' or 'false'). +cygwin=false +msys=false +darwin=false +nonstop=false +case "`uname`" in + CYGWIN* ) + cygwin=true + ;; + Darwin* ) + darwin=true + ;; + MINGW* ) + msys=true + ;; + NONSTOP* ) + nonstop=true + ;; +esac + +CLASSPATH=$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/examples/socket/Get server info/gradlew.bat b/examples/socket/Get server info/gradlew.bat new file mode 100644 index 0000000..24467a1 --- /dev/null +++ b/examples/socket/Get server info/gradlew.bat @@ -0,0 +1,100 @@ +@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 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 init + +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 init + +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 + +:init +@rem Get command-line arguments, handling Windows variants + +if not "%OS%" == "Windows_NT" goto win9xME_args + +:win9xME_args +@rem Slurp the command line arguments. +set CMD_LINE_ARGS= +set _SKIP=2 + +:win9xME_args_slurp +if "x%~1" == "x" goto execute + +set CMD_LINE_ARGS=%* + +: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 %CMD_LINE_ARGS% + +: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/examples/socket/Get server info/settings.gradle b/examples/socket/Get server info/settings.gradle new file mode 100644 index 0000000..00a853a --- /dev/null +++ b/examples/socket/Get server info/settings.gradle @@ -0,0 +1 @@ +rootProject.name = 'get_server_info' diff --git a/examples/socket/Get server info/src/main/java/example/socket/Main.java b/examples/socket/Get server info/src/main/java/example/socket/Main.java new file mode 100644 index 0000000..87d77cb --- /dev/null +++ b/examples/socket/Get server info/src/main/java/example/socket/Main.java @@ -0,0 +1,109 @@ +package example.socket; + +import mc.protocol.Packet; +import mc.protocol.PacketDirection; +import mc.protocol.ProtocolConstant; +import mc.protocol.State; +import mc.protocol.dto.ServerInfo; +import mc.protocol.handshake.client.HandshakePacket; +import mc.protocol.io.NetInputStream; +import mc.protocol.io.coder.*; +import mc.protocol.status.client.StatusServerRequest; +import mc.protocol.status.server.StatusServerResponse; + +import java.io.IOException; +import java.net.InetSocketAddress; +import java.nio.ByteBuffer; +import java.nio.channels.SocketChannel; +import java.util.Objects; + +public class Main { + private static final String HOST = "127.0.0.1"; + private static final int PORT = 25565; + + private static SocketChannel client; + private static ProtocolEncoder encoder; + private static ProtocolSplitter splitter; + private static ProtocolDecoder decoder; + + public static void main(String[] args) throws IOException { + openConnection(); + + sendHandshake(); + sendStatusServerRequest(); + + StatusServerResponse statusServerResponse = receiveStatusServerResponse(); + ServerInfo serverInfo = Objects.requireNonNull(statusServerResponse).getServerInfoDto(); + + System.out.printf("Version: %s (%d)\n", + serverInfo.getVersion().getName(), serverInfo.getVersion().getProtocol()); + System.out.printf("Description: %s\n", + serverInfo.getDescription().toPlain()); + System.out.printf("Online players: %d/%d\n", + serverInfo.getPlayersInfo().getOnline(), serverInfo.getPlayersInfo().getMax()); + + closeConnection(); + } + + private static void openConnection() throws IOException { + client = SocketChannel.open(); + client.connect(new InetSocketAddress(HOST, PORT)); + + encoder = new ProtocolEncoder(PacketDirection.SERVER_BOUND); + splitter = new ProtocolSplitter(); + decoder = new ProtocolDecoder(PacketDirection.CLIENT_BOUND); + } + + private static void closeConnection() throws IOException { + client.close(); + } + + private static void sendHandshake() throws IOException { + HandshakePacket handshakePacket = new HandshakePacket(); + handshakePacket.setHost(HOST); + handshakePacket.setPort(PORT); + handshakePacket.setProtocolVersion(ProtocolConstant.PROTOCOL_VERSION); + handshakePacket.setNextState(State.STATUS); + + ByteArrayNetOutputStream netOutputStream = new ByteArrayNetOutputStream(); + encoder.encode(State.HANDSHAKING, handshakePacket, netOutputStream); + + ByteBuffer byteBuffer = ByteBuffer.wrap(netOutputStream.toByteArray()); + client.write(byteBuffer); + } + + private static void sendStatusServerRequest() throws IOException { + StatusServerRequest statusServerRequest = new StatusServerRequest(); + + ByteArrayNetOutputStream netOutputStream = new ByteArrayNetOutputStream(); + encoder.encode(State.STATUS, statusServerRequest, netOutputStream); + + ByteBuffer byteBuffer = ByteBuffer.wrap(netOutputStream.toByteArray()); + client.write(byteBuffer); + } + + private static StatusServerResponse receiveStatusServerResponse() throws IOException { + ByteBuffer buffer = ByteBuffer.allocate(65536); + int readBytes = client.read(buffer); + while (readBytes == buffer.capacity()) { + ByteBuffer buffer2 = ByteBuffer.allocate(buffer.capacity() * 2); + buffer2.put(buffer); + buffer = buffer2; + + readBytes += client.read(buffer); + } + buffer.limit(readBytes).flip(); + + ByteArrayNetInputStream netInputStream = new ByteArrayNetInputStream(buffer.array()); + + NetInputStream netInputStream1; + while ((netInputStream1 = splitter.split(netInputStream)) != null) { + Packet packet = decoder.decode(State.STATUS, netInputStream1); + if (packet instanceof StatusServerResponse) { + return (StatusServerResponse) packet; + } + } + + return null; + } +}