init

.gitignore

@@ -0,0 +1,44 @@
+.gradle
+build/
+!gradle/wrapper/gradle-wrapper.jar
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+out/
+!**/src/main/**/out/
+!**/src/test/**/out/
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+bin/
+!**/src/main/**/bin/
+!**/src/test/**/bin/
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store
+
+.idea/

build.gradle.kts

@@ -0,0 +1,21 @@
+plugins {
+    id("java")
+}
+
+group = "dev.elijahr"
+version = "1.0-SNAPSHOT"
+
+repositories {
+    mavenCentral()
+}
+
+dependencies {
+    testImplementation(platform("org.junit:junit-bom:5.9.1"))
+    testImplementation("org.junit.jupiter:junit-jupiter")
+    implementation("org.java-websocket:Java-WebSocket:1.5.6")
+    implementation("org.apache.commons:commons-text:1.12.0")
+}
+
+tasks.test {
+    useJUnitPlatform()
+}

gradle/wrapper/gradle-wrapper.properties

@@ -0,0 +1,6 @@
+#Tue Apr 02 17:30:20 EDT 2024
+distributionBase=GRADLE_USER_HOME
+distributionPath=wrapper/dists
+distributionUrl=https\://services.gradle.org/distributions/gradle-8.4-bin.zip
+zipStoreBase=GRADLE_USER_HOME
+zipStorePath=wrapper/dists

gradlew

@@ -0,0 +1,234 @@
+#!/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.
+#
+
+##############################################################################
+#
+#   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/master/subprojects/plugins/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
+
+APP_HOME=$( cd "${APP_HOME:-./}" && pwd -P ) || exit
+
+APP_NAME="Gradle"
+APP_BASE_NAME=${0##*/}
+
+# Add default JVM options here. You can also use JAVA_OPTS and GRADLE_OPTS to pass JVM options to this script.
+DEFAULT_JVM_OPTS='"-Xmx64m" "-Xms64m"'
+
+# Use the maximum available, or set MAX_FD != -1 to use that value.
+MAX_FD=maximum
+
+warn () {
+    echo "$*"
+} >&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: $JAVA_HOME
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+    fi
+else
+    JAVACMD=java
+    which java >/dev/null 2>&1 || die "ERROR: JAVA_HOME is not set and no 'java' command could be found in your PATH.
+
+Please set the JAVA_HOME variable in your environment to match the
+location of your Java installation."
+fi
+
+# Increase the maximum file descriptors if we can.
+if ! "$cygwin" && ! "$darwin" && ! "$nonstop" ; then
+    case $MAX_FD in #(
+      max*)
+        MAX_FD=$( ulimit -H -n ) ||
+            warn "Could not query maximum file descriptor limit"
+    esac
+    case $MAX_FD in  #(
+      '' | soft) :;; #(
+      *)
+        ulimit -n "$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
+
+# Collect all arguments for the java command;
+#   * $DEFAULT_JVM_OPTS, $JAVA_OPTS, and $GRADLE_OPTS can contain fragments of
+#     shell script including quotes and variable substitutions, so put them in
+#     double quotes to make sure that they get re-expanded; and
+#   * put everything else in single quotes, so that it's not re-expanded.
+
+set -- \
+        "-Dorg.gradle.appname=$APP_BASE_NAME" \
+        -classpath "$CLASSPATH" \
+        org.gradle.wrapper.GradleWrapperMain \
+        "$@"
+
+# 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 "$JAVACMD" "$@"

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

settings.gradle.kts

@@ -0,0 +1,2 @@
+rootProject.name = "CollabVM4j"
+

src/main/java/dev/elijahr/CollabVM4j/ChatMessage.java

@@ -0,0 +1,10 @@
+package dev.elijahr.CollabVM4j;
+
+public class ChatMessage {
+    public String Username;
+    public String Message;
+    public ChatMessage(String username, String message) {
+        Username = username;
+        Message = message;
+    }
+}

src/main/java/dev/elijahr/CollabVM4j/CollabVMClient.java

@@ -0,0 +1,214 @@
+package dev.elijahr.CollabVM4j;
+
+import org.apache.commons.text.StringEscapeUtils;
+import org.java_websocket.handshake.ServerHandshake;
+
+import javax.imageio.ImageIO;
+import java.awt.image.BufferedImage;
+import java.io.ByteArrayInputStream;
+import java.io.IOException;
+import java.net.URI;
+import java.util.AbstractMap;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Base64;
+
+public class CollabVMClient {
+    // Private fields
+    private boolean _debug;
+    private URI _url;
+    private CollabVMEventHandler _eventHandler;
+    private CollabVMWebSocket _socket;
+    private AbstractMap.SimpleEntry<String, String>[] _customHeaders;
+    private boolean _connected;
+    private boolean _connectedToNode;
+    private String _username;
+    private String _node;
+    private ArrayList<User> _users = new ArrayList<>();
+    private BufferedImage _framebuffer;
+
+    // Constructor
+    @SuppressWarnings("unchecked")
+    public CollabVMClient(URI url, CollabVMEventHandler eventHandler) {
+        this(url, eventHandler, (AbstractMap.SimpleEntry<String, String>[]) new AbstractMap.SimpleEntry<?, ?>[0]);
+    }
+    public CollabVMClient(URI url, CollabVMEventHandler eventHandler, AbstractMap.SimpleEntry<String, String>[] customHeaders) {
+        this(url, eventHandler, customHeaders, false);
+    }
+
+    public CollabVMClient(URI url, CollabVMEventHandler eventHandler, AbstractMap.SimpleEntry<String, String>[] customHeaders, boolean debug) {
+        _debug = debug;
+        _connected = false;
+        _connectedToNode = false;
+        _username = null;
+        _node = null;
+        _url = url;
+        _framebuffer = new BufferedImage(1, 1, BufferedImage.TYPE_INT_ARGB);
+        _eventHandler = eventHandler;
+        _socket = new CollabVMWebSocket(_url, this);
+        _customHeaders = customHeaders;
+        for (AbstractMap.SimpleEntry<String, String> header : _customHeaders) _socket.addHeader(header.getKey(), header.getValue());
+        if (Arrays.stream(_customHeaders).noneMatch(h -> h.getKey().equalsIgnoreCase("origin")))
+            _socket.addHeader("Origin", "https://computernewb.com");
+    }
+
+
+    // Public methods
+    public void connect() {
+        _socket.connect();
+    }
+
+    // WebSocket event handlers
+    public void onWsOpen(ServerHandshake serverHandshake) {
+        _connected = true;
+        if (_username != null)
+            this.sendGuac("rename", this._username);
+        else
+            this.sendGuac("rename");
+        if (this._node != null)
+            this.sendGuac("connect", this._node);
+        _eventHandler.OnOpen();
+
+    }
+    public void onWsMessage(String msg) {
+        String[] msgArr;
+        try {
+            msgArr = Guacutils.Decode(msg);
+        } catch (GuacamoleDecodeException ex) {
+            if (_debug) System.err.println("Error decoding instruction: " + ex.getMessage());
+            return;
+        }
+        if (msgArr.length < 1) return;
+        if (_debug && !(msgArr[0].equals("png") || msgArr[0].equals("sync")))
+            System.out.println("Received message: " + msg);
+        switch (msgArr[0]) {
+            case "nop": {
+                this.sendGuac("nop");
+                break;
+            }
+            case "connect": {
+                switch (msgArr[1]) {
+                    case "0":
+                        _eventHandler.OnNodeConnectFailed();
+                        this._node = null;
+                        break;
+                    case "1":
+                        _eventHandler.OnConnectedToNode();
+                        break;
+                }
+                break;
+            }
+            case "chat": {
+                if (msgArr.length > 3) {
+                    // Chat history
+                    ArrayList<ChatMessage> msgs = new ArrayList<>();
+                    for (int i = 1; i < msgArr.length; i += 2) {
+                        msgs.add(new ChatMessage(msgArr[i], StringEscapeUtils.unescapeHtml4(msgArr[i + 1])));
+                    }
+                    _eventHandler.OnChatHistory(msgs.toArray(new ChatMessage[0]));
+                } else {
+                    // Chat message
+                    _eventHandler.OnChatMessage(new ChatMessage(msgArr[1], StringEscapeUtils.unescapeHtml4(msgArr[2])));
+                }
+                break;
+            }
+            case "adduser": {
+                for (int i = 2; i < msgArr.length; i += 2) {
+                    String username = msgArr[i];
+                    int rank = Integer.parseInt(msgArr[i + 1]);
+                    _users.removeIf(u -> u.Username.equals(username));
+                    User user = new User(username, rank);
+                    _users.add(user);
+                    _eventHandler.OnUserJoined(user);
+                }
+                break;
+            }
+            case "remuser": {
+                for (int i = 2; i < msgArr.length; i++) {
+                    String username = msgArr[i];
+                    User user = _users.stream().filter(u -> u.Username.equals(username)).findFirst().orElse(null);
+                    if (user == null) continue;
+                    this._users.remove(user);
+                    _eventHandler.OnUserLeft(user);
+                }
+                break;
+            }
+            case "rename": {
+                if (msgArr[1].equals("0")) {
+                    // Self renamed
+                    User user = _users.stream().filter(u -> u.Username.equals(_username)).findFirst().orElse(null);
+                    if (user != null) {
+                        user.Username = msgArr[3];
+                    }
+                    _username = msgArr[3];
+                    _eventHandler.OnRenamed(_username);
+                } else {
+                    // User renamed
+                    User user = _users.stream().filter(u -> u.Username.equals(msgArr[2])).findFirst().orElse(null);
+                    if (user != null) {
+                        user.Username = msgArr[3];
+                    }
+                    _eventHandler.OnUserRenamed(msgArr[2], msgArr[3], user);
+                }
+                break;
+            }
+            case "size": {
+                if (!msgArr[1].equals("0")) return;
+                int width = Integer.parseInt(msgArr[2]);
+                int height = Integer.parseInt(msgArr[3]);
+                _framebuffer = new BufferedImage(width, height, BufferedImage.TYPE_INT_ARGB);
+                _eventHandler.OnScreenSize(width, height);
+                break;
+            }
+            case "png": {
+                if (!(msgArr[1].equals("0") && msgArr[2].equals("0"))) return;
+                ByteArrayInputStream stream = new ByteArrayInputStream(Base64.getDecoder().decode(msgArr[5]));
+                BufferedImage rect;
+                try {
+                    rect = ImageIO.read(stream);
+                } catch (IOException e) {
+                    return;
+                }
+                int x = Integer.parseInt(msgArr[3]);
+                int y = Integer.parseInt(msgArr[4]);
+                _framebuffer.getGraphics().drawImage(rect, x, y, null);
+                _eventHandler.OnRectangle(x, y, rect);
+                break;
+            }
+        }
+    }
+    public void onWsClose(int code, String reason, boolean remote) {
+        _connectedToNode = false;
+        _connected = false;
+        _eventHandler.OnConnectionClosed();
+    }
+    public void onWsError(Exception ex) {
+        _connected = false;
+    }
+    public void sendGuac(String... args) {
+        if (_debug) System.out.println("Sending message: " + Guacutils.Encode(args));
+        _socket.send(Guacutils.Encode(args));
+    }
+    // Getters and setters
+    public void setUsername(String username) {
+        if (_connected)
+            this.sendGuac("rename", username);
+        // Don't set the username if we're connected until the server confirms the rename
+        else
+            this._username = username;
+    }
+    public String getUsername() { return this._username; }
+    public void setNode(String node) {
+        if (this._node != null) throw new RuntimeException("Cannot switch nodes after connecting. Disconnect the client first.");
+        if (_connected)
+            this.sendGuac("connect", node);
+        this._node = node;
+    }
+    public String getNode() { return this._node; }
+    public User[] getUsers() { return this._users.toArray(new User[0]); }
+    public BufferedImage getFramebuffer() {
+        BufferedImage img = new BufferedImage(_framebuffer.getWidth(), _framebuffer.getHeight(), BufferedImage.TYPE_INT_ARGB);
+        img.getGraphics().drawImage(_framebuffer, 0, 0, null);
+        return img;
+    }
+}

src/main/java/dev/elijahr/CollabVM4j/CollabVMEventHandler.java

@@ -0,0 +1,22 @@
+package dev.elijahr.CollabVM4j;
+
+import java.awt.image.BufferedImage;
+
+public interface CollabVMEventHandler {
+    default void OnChatMessage(ChatMessage msg) {}
+    default void OnChatHistory(ChatMessage[] msgs) {}
+    default void OnOpen() {}
+    default void OnConnectedToNode() {}
+    default void OnNodeConnectFailed() {}
+    default void OnRectangle(int x, int y, BufferedImage rect) {}
+    default void OnScreenSize(int width, int height) {}
+    default void OnRenamed(String newUsername) {};
+    default void OnUserRenamed(String oldName, String newName, User user) {}
+    default void OnUserJoined(User user) {}
+    default void OnUserLeft(User user) {}
+    default void OnVoteUpdate() {}
+    default void OnVoteEnded() {}
+    default void OnVoteCooldown(int cooldown) {}
+    default void OnTurnUpdate() {}
+    default void OnConnectionClosed() {}
+}

src/main/java/dev/elijahr/CollabVM4j/CollabVMWebSocket.java

@@ -0,0 +1,42 @@
+package dev.elijahr.CollabVM4j;
+
+import org.java_websocket.client.WebSocketClient;
+import org.java_websocket.drafts.Draft_6455;
+import org.java_websocket.handshake.ServerHandshake;
+import org.java_websocket.protocols.Protocol;
+
+import java.net.URI;
+import java.util.Collections;
+
+class CollabVMWebSocket extends WebSocketClient {
+    private CollabVMClient _owner;
+
+    public CollabVMWebSocket(URI uri, CollabVMClient owner) {
+        super(
+                uri,
+                // why the fuck is it like this i hate java
+                new Draft_6455(Collections.emptyList(), Collections.singletonList(new Protocol("guacamole")))
+        );
+        _owner = owner;
+    }
+    @Override
+    public void onOpen(ServerHandshake serverHandshake) {
+        _owner.onWsOpen(serverHandshake);
+    }
+
+    @Override
+    public void onMessage(String s) {
+        _owner.onWsMessage(s);
+    }
+
+    @Override
+    public void onClose(int i, String s, boolean b) {
+        _owner.onWsClose(i,s,b);
+    }
+
+    @Override
+    public void onError(Exception e) {
+        _owner.onWsError(e);
+    }
+
+}

src/main/java/dev/elijahr/CollabVM4j/GuacamoleDecodeException.java

@@ -0,0 +1,7 @@
+package dev.elijahr.CollabVM4j;
+
+public class GuacamoleDecodeException extends RuntimeException {
+    public GuacamoleDecodeException(String err) {
+        super("Malformed guacamole instruction: " + err);
+    }
+}

src/main/java/dev/elijahr/CollabVM4j/Guacutils.java

@@ -0,0 +1,46 @@
+package dev.elijahr.CollabVM4j;
+
+import java.util.ArrayList;
+
+public class Guacutils {
+    public static String Encode(String... args) {
+        StringBuilder outStr = new StringBuilder();
+        for (int i = 0; i < args.length; i++) {
+            outStr.append(args[i].length());
+            outStr.append('.');
+            outStr.append(args[i]);
+            if (i != args.length - 1) outStr.append(',');
+        }
+        outStr.append(';');
+        return outStr.toString();
+    }
+
+    public static String[] Decode(String instr) {
+        if (instr.charAt(instr.length() - 1) != ';') {
+            throw new GuacamoleDecodeException("Not properly terminated");
+        }
+        ArrayList<String> segments = new ArrayList<String>();
+        int pos = 0;
+        while (pos < instr.length() - 1) {
+            int dotPos = instr.indexOf('.', pos + 1);
+            if (dotPos == -1) {
+                throw new GuacamoleDecodeException("Length delimiter not found");
+            }
+            String lenStr = instr.substring(pos, dotPos);
+            int len;
+            try {
+                len = Integer.parseInt(lenStr, 10);
+            } catch (NumberFormatException ex) {
+                throw new GuacamoleDecodeException("Invalid segment length");
+            }
+            String segment = instr.substring(dotPos + 1, dotPos + len + 1);
+            segments.add(segment);
+            if (instr.charAt(dotPos + len + 1) != ',' && dotPos + len + 2 != instr.length()) {
+                throw new GuacamoleDecodeException("Invalid section delimiter");
+            }
+            pos = dotPos + len + 2;
+        }
+        return segments.toArray(new String[0]);
+    }
+}
+

src/main/java/dev/elijahr/CollabVM4j/Rank.java

@@ -0,0 +1,9 @@
+package dev.elijahr.CollabVM4j;
+
+// java enums suck so we have to use a class instead
+public class Rank {
+    public final int Unregistered = 0;
+    public final int Registered = 1;
+    public final int Admin = 2;
+    public final int Moderator = 3;
+}

src/main/java/dev/elijahr/CollabVM4j/User.java

@@ -0,0 +1,10 @@
+package dev.elijahr.CollabVM4j;
+
+public class User {
+    public String Username;
+    public int Rank;
+    public User(String username, int rank) {
+        Username = username;
+        Rank = rank;
+    }
+}