begin oauth2 setup

src/main/java/dev/plex/HTTPDModule.java

@@ -1,35 +1,26 @@
 package dev.plex;
 
+import dev.plex.authentication.AuthenticationManager;
 import dev.plex.cache.FileCache;
 import dev.plex.config.ModuleConfig;
 import dev.plex.module.PlexModule;
 import dev.plex.request.AbstractServlet;
 import dev.plex.request.SchematicUploadServlet;
-import dev.plex.request.impl.CommandsEndpoint;
-import dev.plex.request.impl.IndefBansEndpoint;
-import dev.plex.request.impl.IndexEndpoint;
-import dev.plex.request.impl.ListEndpoint;
-import dev.plex.request.impl.PunishmentsEndpoint;
-import dev.plex.request.impl.SchematicDownloadEndpoint;
-import dev.plex.request.impl.SchematicUploadEndpoint;
+import dev.plex.request.impl.*;
 import dev.plex.util.PlexLog;
 import jakarta.servlet.MultipartConfigElement;
-import java.io.File;
-import java.util.concurrent.atomic.AtomicReference;
 import lombok.Getter;
 import net.milkbowl.vault.permission.Permission;
 import org.bukkit.Bukkit;
 import org.bukkit.plugin.RegisteredServiceProvider;
-import org.eclipse.jetty.server.Connector;
-import org.eclipse.jetty.server.ForwardedRequestCustomizer;
-import org.eclipse.jetty.server.HttpConfiguration;
-import org.eclipse.jetty.server.HttpConnectionFactory;
-import org.eclipse.jetty.server.Server;
-import org.eclipse.jetty.server.ServerConnector;
+import org.eclipse.jetty.server.*;
 import org.eclipse.jetty.servlet.ServletContextHandler;
 import org.eclipse.jetty.servlet.ServletHandler;
 import org.eclipse.jetty.servlet.ServletHolder;
 
+import java.io.File;
+import java.util.concurrent.atomic.AtomicReference;
+
 public class HTTPDModule extends PlexModule
 {
     public static ServletContextHandler context;
@@ -45,6 +36,8 @@ public class HTTPDModule extends PlexModule
 
     public static final String template = AbstractServlet.readFileReal(HTTPDModule.class.getResourceAsStream("/httpd/template.html"));
 
+    private AuthenticationManager authenticationManager;
+
     @Override
     public void load()
     {
@@ -61,6 +54,18 @@ public class HTTPDModule extends PlexModule
         {
             throw new RuntimeException("Plex-HTTPD requires the 'Vault' plugin as well as a Permissions plugin that hooks into 'Vault'. We recommend LuckPerms!");
         }
+
+        this.authenticationManager = new AuthenticationManager();
+        if (this.authenticationManager.provider() != null)
+        {
+            PlexLog.debug(this.authenticationManager.provider().generateLogin());
+        }
+        else
+        {
+            PlexLog.debug("Provider was not found for Authentication so disabled");
+        }
+
+
         serverThread = new Thread(() ->
         {
             Server server = new Server();

src/main/java/dev/plex/authentication/AuthenticatedUser.java

@@ -0,0 +1,24 @@
+package dev.plex.authentication;
+
+import com.google.common.collect.Lists;
+import lombok.Data;
+import lombok.experimental.Accessors;
+
+import java.time.ZonedDateTime;
+import java.util.LinkedList;
+import java.util.List;
+
+/**
+ * @author Taah
+ * @since 6:37 PM [03-05-2024]
+ */
+
+@Data
+@Accessors(fluent = true)
+public class AuthenticatedUser
+{
+    private final String ip;
+    private final ZonedDateTime lastAuthenticated;
+    private final LinkedList<String> roles = Lists.newLinkedList();
+    private final UserType userType = UserType.UNKNOWN;
+}

src/main/java/dev/plex/authentication/AuthenticationManager.java

@@ -0,0 +1,57 @@
+package dev.plex.authentication;
+
+import dev.plex.HTTPDModule;
+import dev.plex.authentication.impl.DiscordOAuth2Provider;
+import dev.plex.util.PlexLog;
+import org.apache.commons.lang3.NotImplementedException;
+
+/**
+ * @author Taah
+ * @since 7:08 PM [03-05-2024]
+ */
+public class AuthenticationManager
+{
+    private final OAuth2Provider provider;
+
+    public AuthenticationManager()
+    {
+        final boolean enabled = HTTPDModule.moduleConfig.getBoolean("authentication.enabled", false);
+        if (!enabled)
+        {
+            provider = null;
+            return;
+        }
+
+        PlexLog.debug("[HTTPD] Auth is enabled");
+
+        final String providerName = HTTPDModule.moduleConfig.getString("authentication.provider.name", "");
+        if (providerName.isEmpty())
+        {
+            PlexLog.error("OAuth2 Authentication is enabled but no provider was given!");
+            provider = null;
+            return;
+        }
+
+        PlexLog.debug("[HTTPD] Provider name is {0}", providerName);
+
+        switch (providerName.toLowerCase())
+        {
+            case "discord" -> {
+                provider = new DiscordOAuth2Provider();
+            }
+            case "xenforo" -> {
+                throw new NotImplementedException("XenForo OAuth2 is not implemented yet!");
+            }
+            default -> {
+                provider = null;
+            }
+        }
+
+        PlexLog.log("Using {0} provider for authentication", providerName);
+    }
+
+    public OAuth2Provider provider()
+    {
+        return this.provider;
+    }
+}

src/main/java/dev/plex/authentication/OAuth2Provider.java

@@ -0,0 +1,21 @@
+package dev.plex.authentication;
+
+import org.eclipse.jetty.server.Response;
+
+import java.util.HashMap;
+
+/**
+ * @author Taah
+ * @since 6:36 PM [03-05-2024]
+ */
+public interface OAuth2Provider
+{
+    HashMap<String, AuthenticatedUser> sessions();
+
+    AuthenticatedUser login(Response response, UserType type);
+
+    String[] roles(AuthenticatedUser user);
+
+    String generateLogin();
+
+}

src/main/java/dev/plex/authentication/UserType.java

@@ -0,0 +1,10 @@
+package dev.plex.authentication;
+
+/**
+ * @author Taah
+ * @since 6:37 PM [03-05-2024]
+ */
+public enum UserType
+{
+    DISCORD, UNKNOWN
+}

src/main/java/dev/plex/authentication/impl/DiscordOAuth2Provider.java

@@ -0,0 +1,81 @@
+package dev.plex.authentication.impl;
+
+import com.google.common.collect.Maps;
+import dev.plex.HTTPDModule;
+import dev.plex.authentication.AuthenticatedUser;
+import dev.plex.authentication.OAuth2Provider;
+import dev.plex.authentication.UserType;
+import dev.plex.util.PlexLog;
+import org.eclipse.jetty.client.HttpClient;
+import org.eclipse.jetty.server.Response;
+
+import java.net.URLEncoder;
+import java.nio.charset.StandardCharsets;
+import java.util.HashMap;
+
+/**
+ * @author Taah
+ * @since 6:41 PM [03-05-2024]
+ */
+public class DiscordOAuth2Provider implements OAuth2Provider
+{
+    private final HashMap<String, AuthenticatedUser> sessions = Maps.newHashMap();
+
+    private final String token;
+    private final String clientId;
+    private final String redirectUri;
+
+    public DiscordOAuth2Provider()
+    {
+        token = System.getenv("BOT_TOKEN").isEmpty() ? HTTPDModule.moduleConfig.getString("authentication.provider.discord.token", System.getProperty("BOT_TOKEN", "")) : System.getenv("BOT_TOKEN");
+        clientId = HTTPDModule.moduleConfig.getString("authentication.provider.discord.clientId", "");
+        redirectUri = URLEncoder.encode(HTTPDModule.moduleConfig.getString("authentication.provider.redirectUri", ""), StandardCharsets.UTF_8);
+
+        PlexLog.debug("[HTTPD] Client ID: {0}, Redirect URL: {1}", clientId, redirectUri);
+
+        if (redirectUri.isEmpty())
+        {
+            PlexLog.error("Provided authentication redirect url was empty for HTTPD!");
+            return;
+        }
+
+        if (token.isEmpty())
+        {
+            PlexLog.error("Provided discord authentication token was empty for HTTPD!");
+            return;
+        }
+
+        if (clientId.isEmpty())
+        {
+            PlexLog.error("Provided discord client ID was empty for HTTPD!");
+        }
+
+    }
+
+    @Override
+    public HashMap<String, AuthenticatedUser> sessions()
+    {
+        return sessions;
+    }
+
+    @Override
+    public AuthenticatedUser login(Response response, UserType type)
+    {
+        return null;
+    }
+
+    @Override
+    public String[] roles(AuthenticatedUser user)
+    {
+        return new String[0];
+    }
+
+    @Override
+    public String generateLogin()
+    {
+        return String.format("https://discord.com/oauth2/authorize?client_id=%s&scope=%s&redirect_uri=%s",
+                clientId,
+                "identify%20guilds%20guilds.members.read",
+                redirectUri);
+    }
+}

src/main/java/dev/plex/request/impl/AuthenticationEndpoint.java

@@ -0,0 +1,27 @@
+package dev.plex.request.impl;
+
+import dev.plex.command.PlexCommand;
+import dev.plex.command.annotation.CommandPermissions;
+import dev.plex.request.AbstractServlet;
+import dev.plex.request.GetMapping;
+import dev.plex.util.PlexLog;
+import jakarta.servlet.http.HttpServletRequest;
+import jakarta.servlet.http.HttpServletResponse;
+import org.bukkit.Bukkit;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandMap;
+import org.bukkit.command.PluginIdentifiableCommand;
+
+import java.util.*;
+
+public class AuthenticationEndpoint extends AbstractServlet
+{
+
+
+    @GetMapping(endpoint = "/oauth2")
+    public String login(HttpServletRequest request, HttpServletResponse response)
+    {
+        // TODO: Nuh uh
+        return "";
+    }
+}

src/main/resources/httpd/config.yml

@@ -2,3 +2,14 @@ server:
   bind-address: 0.0.0.0
   port: 27192
   logging: false
+
+authentication:
+  enabled: false
+
+  # Providers: discord
+  provider:
+    name: discord
+    redirectUri: ""
+    discord: # Fill if using discord provider
+      clientId: ""
+      token: "" # Can also use environment variable or system property BOT_TOKEN