WIP

.run/Agent 1.run.xml

@@ -9,10 +9,10 @@
       <env name="AGENT_NAME" value="Agent 1" />
       <env name="ALLOWED_RCON_PORTS" value="25575,27000,27001" />
       <env name="ALLOWED_SERVER_PORTS" value="25565,26000,26001" />
+      <env name="CONTROLLER_HOST" value="localhost" />
       <env name="JAVA_SEARCH_PATH" value="~/.jdks" />
       <env name="MAX_INSTANCES" value="3" />
       <env name="MAX_MEMORY" value="12G" />
-      <env name="SERVER_HOST" value="localhost" />
     </envs>
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />

.run/Agent 2.run.xml

@@ -9,10 +9,10 @@
       <env name="AGENT_NAME" value="Agent 2" />
       <env name="ALLOWED_RCON_PORTS" value="27002-27006" />
       <env name="ALLOWED_SERVER_PORTS" value="26002-26006" />
+      <env name="CONTROLLER_HOST" value="localhost" />
       <env name="JAVA_SEARCH_PATH" value="~/.jdks" />
       <env name="MAX_INSTANCES" value="5" />
       <env name="MAX_MEMORY" value="10G" />
-      <env name="SERVER_HOST" value="localhost" />
     </envs>
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />

.run/Agent 3.run.xml

@@ -9,10 +9,10 @@
       <env name="AGENT_NAME" value="Agent 3" />
       <env name="ALLOWED_RCON_PORTS" value="27007" />
       <env name="ALLOWED_SERVER_PORTS" value="26007" />
+      <env name="CONTROLLER_HOST" value="localhost" />
       <env name="JAVA_SEARCH_PATH" value="~/.jdks" />
       <env name="MAX_INSTANCES" value="1" />
       <env name="MAX_MEMORY" value="2560M" />
-      <env name="SERVER_HOST" value="localhost" />
     </envs>
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />

.run/Controller.run.xml

@@ -1,18 +1,17 @@
 <component name="ProjectRunConfigurationManager">
-  <configuration default="false" name="Server" type="DotNetProject" factoryName=".NET Project">
+  <configuration default="false" name="Controller" type="DotNetProject" factoryName=".NET Project">
     <option name="EXE_PATH" value="$PROJECT_DIR$/.artifacts/bin/Phantom.Controller/debug/Phantom.Controller.exe" />
     <option name="PROGRAM_PARAMETERS" value="" />
-    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/.workdir/Server" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/.workdir/Controller" />
     <option name="PASS_PARENT_ENVS" value="1" />
     <envs>
-      <env name="ASPNETCORE_ENVIRONMENT" value="Development" />
+      <env name="AGENT_RPC_SERVER_HOST" value="localhost" />
       <env name="PG_DATABASE" value="postgres" />
       <env name="PG_HOST" value="localhost" />
       <env name="PG_PASS" value="development" />
-      <env name="PG_PORT" value="9402" />
+      <env name="PG_PORT" value="9403" />
       <env name="PG_USER" value="postgres" />
-      <env name="RPC_SERVER_HOST" value="localhost" />
+      <env name="WEB_RPC_SERVER_HOST" value="localhost" />
-      <env name="WEB_SERVER_HOST" value="localhost" />
     </envs>
     <option name="USE_EXTERNAL_CONSOLE" value="0" />
     <option name="USE_MONO" value="0" />

.run/Web.run.xml

@@ -0,0 +1,24 @@
+<component name="ProjectRunConfigurationManager">
+  <configuration default="false" name="Web" type="DotNetProject" factoryName=".NET Project">
+    <option name="EXE_PATH" value="$PROJECT_DIR$/.artifacts/bin/Phantom.Web/debug/Phantom.Web.exe" />
+    <option name="PROGRAM_PARAMETERS" value="" />
+    <option name="WORKING_DIRECTORY" value="$PROJECT_DIR$/.workdir/Web" />
+    <option name="PASS_PARENT_ENVS" value="1" />
+    <envs>
+      <env name="ASPNETCORE_ENVIRONMENT" value="Development" />
+      <env name="WEB_SERVER_HOST" value="localhost" />
+    </envs>
+    <option name="USE_EXTERNAL_CONSOLE" value="0" />
+    <option name="USE_MONO" value="0" />
+    <option name="RUNTIME_ARGUMENTS" value="" />
+    <option name="PROJECT_PATH" value="$PROJECT_DIR$/Web/Phantom.Web/Phantom.Web.csproj" />
+    <option name="PROJECT_EXE_PATH_TRACKING" value="1" />
+    <option name="PROJECT_ARGUMENTS_TRACKING" value="1" />
+    <option name="PROJECT_WORKING_DIRECTORY_TRACKING" value="0" />
+    <option name="PROJECT_KIND" value="DotNetCore" />
+    <option name="PROJECT_TFM" value="net8.0" />
+    <method v="2">
+      <option name="Build" />
+    </method>
+  </configuration>
+</component>

.workdir/Controller/.gitignore

@@ -0,0 +1 @@
+

.workdir/Controller/secrets/web.key

@@ -0,0 +1,2 @@
+±™h?־<>ֹBx
+<02>
–f-<2D>¢יא
<01>“ש"8”כיJ–<4A>‎Jn/וda

.workdir/Controller/secrets/web.secret

@@ -0,0 +1 @@
+TΦ./gϋΏNρ°t<C2B0>$Ν!Β(ƒρ#η~ΖΞ}<14><:

Agent/Phantom.Agent.Rpc/KeepAliveLoop.cs

@@ -1,5 +1,5 @@
 using Phantom.Common.Logging;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Serilog;
 
 namespace Phantom.Agent.Rpc;

Agent/Phantom.Agent.Rpc/Phantom.Agent.Rpc.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <ProjectReference Include="..\..\Common\Phantom.Common.Messages\Phantom.Common.Messages.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Messages.Agent\Phantom.Common.Messages.Agent.csproj" />
   </ItemGroup>
 
 </Project>

Agent/Phantom.Agent.Rpc/RpcLauncher.cs

@@ -1,9 +1,9 @@
 using NetMQ;
 using NetMQ.Sockets;
 using Phantom.Common.Data.Agent;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Utils.Rpc;
 using Phantom.Utils.Rpc.Message;
 using Phantom.Utils.Tasks;
@@ -13,13 +13,13 @@ using Serilog.Events;
 namespace Phantom.Agent.Rpc;
 
 public sealed class RpcLauncher : RpcRuntime<ClientSocket> {
-	public static Task Launch(RpcConfiguration config, AgentAuthToken authToken, AgentInfo agentInfo, Func<RpcServerConnection, IMessageToAgentListener> listenerFactory, SemaphoreSlim disconnectSemaphore, CancellationToken receiveCancellationToken) {
+	public static Task Launch(RpcConfiguration config, AuthToken authToken, AgentInfo agentInfo, Func<RpcServerConnection, IMessageToAgentListener> listenerFactory, SemaphoreSlim disconnectSemaphore, CancellationToken receiveCancellationToken) {
 		var socket = new ClientSocket();
 		var options = socket.Options;
 
 		options.CurveServerCertificate = config.ServerCertificate;
 		options.CurveCertificate = new NetMQCertificate();
-		options.HelloMessage = MessageRegistries.ToServer.Write(new RegisterAgentMessage(authToken, agentInfo)).ToArray();
+		options.HelloMessage = AgentMessageRegistries.ToController.Write(new RegisterAgentMessage(authToken, agentInfo)).ToArray();
 
 		return new RpcLauncher(config, socket, agentInfo.Guid, listenerFactory, disconnectSemaphore, receiveCancellationToken).Launch();
 	}
@@ -63,7 +63,7 @@ public sealed class RpcLauncher : RpcRuntime<ClientSocket> {
 				LogMessageType(logger, data);
 				
 				if (data.Length > 0) {
-					MessageRegistries.ToAgent.Handle(data, handler);
+					AgentMessageRegistries.ToAgent.Handle(data, handler);
 				}
 			}
 		} catch (OperationCanceledException) {
@@ -81,11 +81,11 @@ public sealed class RpcLauncher : RpcRuntime<ClientSocket> {
 			return;
 		}
 
-		if (data.Length > 0 && MessageRegistries.ToAgent.TryGetType(data, out var type)) {
+		if (data.Length > 0 && AgentMessageRegistries.ToAgent.TryGetType(data, out var type)) {
-			logger.Verbose("Received {MessageType} ({Bytes} B) from server.", type.Name, data.Length);
+			logger.Verbose("Received {MessageType} ({Bytes} B) from controller.", type.Name, data.Length);
 		}
 		else {
-			logger.Verbose("Received {Bytes} B message from server.", data.Length);
+			logger.Verbose("Received {Bytes} B message from controller.", data.Length);
 		}
 	}
 
@@ -93,7 +93,7 @@ public sealed class RpcLauncher : RpcRuntime<ClientSocket> {
 		var unregisterTimeoutTask = Task.Delay(TimeSpan.FromSeconds(5), CancellationToken.None);
 		var finishedTask = await Task.WhenAny(ServerMessaging.Send(new UnregisterAgentMessage(agentGuid)), unregisterTimeoutTask);
 		if (finishedTask == unregisterTimeoutTask) {
-			config.RuntimeLogger.Error("Timed out communicating agent shutdown with the server.");
+			config.RuntimeLogger.Error("Timed out communicating agent shutdown with the controller.");
 		}
 	}
 

Agent/Phantom.Agent.Rpc/RpcServerConnection.cs

@@ -1,7 +1,7 @@
 using NetMQ;
 using NetMQ.Sockets;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
 using Phantom.Utils.Rpc.Message;
 
 namespace Phantom.Agent.Rpc; 
@@ -15,17 +15,17 @@ public sealed class RpcServerConnection {
 		this.replyTracker = replyTracker;
 	}
 
-	internal async Task Send<TMessage>(TMessage message) where TMessage : IMessageToServer {
+	internal async Task Send<TMessage>(TMessage message) where TMessage : IMessageToController {
-		var bytes = MessageRegistries.ToServer.Write(message).ToArray();
+		var bytes = AgentMessageRegistries.ToController.Write(message).ToArray();
 		if (bytes.Length > 0) {
 			await socket.SendAsync(bytes);
 		}
 	}
 
-	internal async Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessageToServer<TReply> where TReply : class {
+	internal async Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessageToController<TReply> where TReply : class {
 		var sequenceId = replyTracker.RegisterReply();
 		
-		var bytes = MessageRegistries.ToServer.Write<TMessage, TReply>(sequenceId, message).ToArray();
+		var bytes = AgentMessageRegistries.ToController.Write<TMessage, TReply>(sequenceId, message).ToArray();
 		if (bytes.Length == 0) {
 			replyTracker.ForgetReply(sequenceId);
 			return null;

Agent/Phantom.Agent.Rpc/ServerMessaging.cs

@@ -1,5 +1,5 @@
 using Phantom.Common.Logging;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
 using Serilog;
 
 namespace Phantom.Agent.Rpc;
@@ -24,11 +24,11 @@ public static class ServerMessaging {
 		Logger.Information("Server connection ready.");
 	}
 
-	public static Task Send<TMessage>(TMessage message) where TMessage : IMessageToServer {
+	public static Task Send<TMessage>(TMessage message) where TMessage : IMessageToController {
 		return CurrentConnectionOrThrow.Send(message);
 	}
 
-	public static Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessageToServer<TReply> where TReply : class {
+	public static Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessageToController<TReply> where TReply : class {
 		return CurrentConnectionOrThrow.Send<TMessage, TReply>(message, waitForReplyTime, waitForReplyCancellationToken);
 	}
 }

Agent/Phantom.Agent.Services/Instances/Instance.cs

@@ -6,7 +6,7 @@ using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Minecraft;
 using Phantom.Common.Data.Replies;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Serilog;
 
 namespace Phantom.Agent.Services.Instances;

Agent/Phantom.Agent.Services/Instances/InstanceLogSender.cs

@@ -2,7 +2,7 @@ using System.Collections.Immutable;
 using System.Threading.Channels;
 using Phantom.Agent.Rpc;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Utils.Tasks;
 
 namespace Phantom.Agent.Services.Instances;

Agent/Phantom.Agent.Services/Instances/InstanceSessionManager.cs

@@ -14,7 +14,7 @@ using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Minecraft;
 using Phantom.Common.Data.Replies;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Utils.IO;
 using Phantom.Utils.Tasks;
 using Serilog;

Agent/Phantom.Agent.Services/Phantom.Agent.Services.csproj

@@ -6,7 +6,7 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <ProjectReference Include="..\..\Common\Phantom.Common.Messages\Phantom.Common.Messages.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Messages.Agent\Phantom.Common.Messages.Agent.csproj" />
     <ProjectReference Include="..\Phantom.Agent.Minecraft\Phantom.Agent.Minecraft.csproj" />
     <ProjectReference Include="..\Phantom.Agent.Rpc\Phantom.Agent.Rpc.csproj" />
   </ItemGroup>

Agent/Phantom.Agent.Services/Rpc/MessageListener.cs

@@ -2,10 +2,10 @@
 using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Replies;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.ToAgent;
+using Phantom.Common.Messages.Agent.ToAgent;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Utils.Rpc.Message;
 using Serilog;
 

Agent/Phantom.Agent/AgentKey.cs

@@ -10,7 +10,7 @@ namespace Phantom.Agent;
 static class AgentKey {
 	private static ILogger Logger { get; } = PhantomLogger.Create(nameof(AgentKey));
 
-	public static Task<(NetMQCertificate, AgentAuthToken)?> Load(string? agentKeyToken, string? agentKeyFilePath) {
+	public static Task<(NetMQCertificate, AuthToken)?> Load(string? agentKeyToken, string? agentKeyFilePath) {
 		if (agentKeyFilePath != null) {
 			return LoadFromFile(agentKeyFilePath);
 		}
@@ -22,7 +22,7 @@ static class AgentKey {
 		}
 	}
 
-	private static async Task<(NetMQCertificate, AgentAuthToken)?> LoadFromFile(string agentKeyFilePath) {
+	private static async Task<(NetMQCertificate, AuthToken)?> LoadFromFile(string agentKeyFilePath) {
 		if (!File.Exists(agentKeyFilePath)) {
 			Logger.Fatal("Missing agent key file: {AgentKeyFilePath}", agentKeyFilePath);
 			return null;
@@ -41,7 +41,7 @@ static class AgentKey {
 		}
 	}
 
-	private static (NetMQCertificate, AgentAuthToken)? LoadFromToken(string agentKey) {
+	private static (NetMQCertificate, AuthToken)? LoadFromToken(string agentKey) {
 		try {
 			return LoadFromBytes(TokenGenerator.DecodeBytes(agentKey));
 		} catch (Exception) {
@@ -50,11 +50,11 @@ static class AgentKey {
 		}
 	}
 
-	private static (NetMQCertificate, AgentAuthToken)? LoadFromBytes(byte[] agentKey) {
+	private static (NetMQCertificate, AuthToken)? LoadFromBytes(byte[] agentKey) {
-		var (publicKey, agentToken) = AgentKeyData.FromBytes(agentKey);
+		var (publicKey, agentToken) = ConnectionCommonKey.FromBytes(agentKey);
-		var serverCertificate = NetMQCertificate.FromPublicKey(publicKey);
+		var controllerCertificate = NetMQCertificate.FromPublicKey(publicKey);
 		
 		Logger.Information("Loaded agent key.");
-		return (serverCertificate, agentToken);
+		return (controllerCertificate, agentToken);
 	}
 }

Agent/Phantom.Agent/Program.cs

@@ -26,7 +26,7 @@ try {
 	PhantomLogger.Root.InformationHeading("Initializing Phantom Panel agent...");
 	PhantomLogger.Root.Information("Agent version: {Version}", fullVersion);
 
-	var (serverHost, serverPort, javaSearchPath, agentKeyToken, agentKeyFilePath, agentName, maxInstances, maxMemory, allowedServerPorts, allowedRconPorts, maxConcurrentBackupCompressionTasks) = Variables.LoadOrStop();
+	var (controllerHost, controllerPort, javaSearchPath, agentKeyToken, agentKeyFilePath, agentName, maxInstances, maxMemory, allowedServerPorts, allowedRconPorts, maxConcurrentBackupCompressionTasks) = Variables.LoadOrStop();
 
 	var agentKey = await AgentKey.Load(agentKeyToken, agentKeyFilePath);
 	if (agentKey == null) {
@@ -43,7 +43,7 @@ try {
 		return 1;
 	}
 
-	var (serverCertificate, agentToken) = agentKey.Value;
+	var (controllerCertificate, agentToken) = agentKey.Value;
 	var agentInfo = new AgentInfo(agentGuid.Value, agentName, ProtocolVersion, fullVersion, maxInstances, maxMemory, allowedServerPorts, allowedRconPorts);
 	var agentServices = new AgentServices(agentInfo, folders, new AgentServiceConfiguration(maxConcurrentBackupCompressionTasks));
 
@@ -56,7 +56,7 @@ try {
 	await agentServices.Initialize();
 
 	var rpcDisconnectSemaphore = new SemaphoreSlim(0, 1);
-	var rpcConfiguration = new RpcConfiguration(PhantomLogger.Create("Rpc"), PhantomLogger.Create<TaskManager>("Rpc"), serverHost, serverPort, serverCertificate);
+	var rpcConfiguration = new RpcConfiguration(PhantomLogger.Create("Rpc"), PhantomLogger.Create<TaskManager>("Rpc"), controllerHost, controllerPort, controllerCertificate);
 	var rpcTask = RpcLauncher.Launch(rpcConfiguration, agentToken, agentInfo, MessageListenerFactory, rpcDisconnectSemaphore, shutdownCancellationToken);
 	try {
 		await rpcTask.WaitAsync(shutdownCancellationToken);

Agent/Phantom.Agent/Variables.cs

@@ -6,8 +6,8 @@ using Phantom.Utils.Runtime;
 namespace Phantom.Agent;
 
 sealed record Variables(
-	string ServerHost,
+	string ControllerHost,
-	ushort ServerPort,
+	ushort ControllerPort,
 	string JavaSearchPath,
 	string? AgentKeyToken,
 	string? AgentKeyFilePath,
@@ -23,8 +23,8 @@ sealed record Variables(
 		var javaSearchPath = EnvironmentVariables.GetString("JAVA_SEARCH_PATH").WithDefaultGetter(GetDefaultJavaSearchPath);
 
 		return new Variables(
-			EnvironmentVariables.GetString("SERVER_HOST").Require,
+			EnvironmentVariables.GetString("CONTROLLER_HOST").Require,
-			EnvironmentVariables.GetPortNumber("SERVER_PORT").WithDefault(9401),
+			EnvironmentVariables.GetPortNumber("CONTROLLER_PORT").WithDefault(9401),
 			javaSearchPath,
 			agentKeyToken,
 			agentKeyFilePath,

Common/Phantom.Common.Data.Web/Phantom.Common.Data.Web.csproj

@@ -0,0 +1,12 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  
+  <PropertyGroup>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+  
+  <ItemGroup>
+    <PackageReference Include="MemoryPack" />
+  </ItemGroup>
+  
+</Project>

Common/Phantom.Common.Data.Web/Users/AddUserError.cs

@@ -1,28 +1,25 @@
 using System.Collections.Immutable;
 
-namespace Phantom.Controller.Services.Users;
+namespace Phantom.Common.Data.Web.Users;
 
 public abstract record AddUserError {
 	private AddUserError() {}
 
-	public sealed record NameIsEmpty : AddUserError;
+	public sealed record NameIsInvalid(UsernameRequirementViolation Violation) : AddUserError;
-
-	public sealed record NameIsTooLong(int MaximumLength) : AddUserError;
-
-	public sealed record NameAlreadyExists : AddUserError;
 
 	public sealed record PasswordIsInvalid(ImmutableArray<PasswordRequirementViolation> Violations) : AddUserError;
 
+	public sealed record NameAlreadyExists : AddUserError;
+
 	public sealed record UnknownError : AddUserError;
 }
 
 public static class AddUserErrorExtensions {
 	public static string ToSentences(this AddUserError error, string delimiter) {
 		return error switch {
-			AddUserError.NameIsEmpty         => "Name cannot be empty.",
+			AddUserError.NameIsInvalid e     => e.Violation.ToSentence(),
-			AddUserError.NameIsTooLong e     => "Name cannot be longer than " + e.MaximumLength + " character(s).",
-			AddUserError.NameAlreadyExists   => "Name is already occupied.",
 			AddUserError.PasswordIsInvalid e => string.Join(delimiter, e.Violations.Select(static v => v.ToSentence())),
+			AddUserError.NameAlreadyExists   => "Username is already occupied.",
 			_                                => "Unknown error."
 		};
 	}

Common/Phantom.Common.Data.Web/Users/ICreateOrUpdateAdministratorUserResult.cs

@@ -0,0 +1,22 @@
+using MemoryPack;
+
+namespace Phantom.Common.Data.Web.Users;
+
+[MemoryPackable]
+[MemoryPackUnion(0, typeof(Success))]
+[MemoryPackUnion(1, typeof(CreationFailed))]
+[MemoryPackUnion(2, typeof(UpdatingFailed))]
+[MemoryPackUnion(3, typeof(AddingToRoleFailed))]
+public partial interface ICreateOrUpdateAdministratorUserResult {
+	[MemoryPackable(GenerateType.VersionTolerant)]
+	public sealed partial record Success(UserInfo User) : ICreateOrUpdateAdministratorUserResult;
+
+	[MemoryPackable(GenerateType.VersionTolerant)]
+	public sealed partial record CreationFailed(AddUserError Error) : ICreateOrUpdateAdministratorUserResult;
+
+	[MemoryPackable(GenerateType.VersionTolerant)]
+	public sealed partial record UpdatingFailed(SetUserPasswordError Error) : ICreateOrUpdateAdministratorUserResult;
+	
+	[MemoryPackable(GenerateType.VersionTolerant)]
+	public sealed partial record AddingToRoleFailed : ICreateOrUpdateAdministratorUserResult;
+}

Common/Phantom.Common.Data.Web/Users/PasswordRequirementViolation.cs

@@ -1,4 +1,4 @@
-namespace Phantom.Controller.Services.Users;
+namespace Phantom.Common.Data.Web.Users;
 
 public abstract record PasswordRequirementViolation {
 	private PasswordRequirementViolation() {}

Common/Phantom.Common.Data.Web/Users/Permissions/Permission.cs

@@ -1,4 +1,4 @@
-namespace Phantom.Web.Identity.Data;
+namespace Phantom.Common.Data.Web.Users.Permissions;
 
 public sealed record Permission(string Id, Permission? Parent) {
 	private static readonly List<Permission> AllPermissions = new ();

Common/Phantom.Common.Data.Web/Users/RoleInfo.cs

@@ -0,0 +1,9 @@
+using MemoryPack;
+
+namespace Phantom.Common.Data.Web.Users; 
+
+[MemoryPackable(GenerateType.VersionTolerant)]
+public sealed partial record RoleInfo(
+	[property: MemoryPackOrder(0)] Guid Guid,
+	[property: MemoryPackOrder(1)] string Name
+);

Common/Phantom.Common.Data.Web/Users/SetUserPasswordError.cs

@@ -1,6 +1,6 @@
 using System.Collections.Immutable;
 
-namespace Phantom.Controller.Services.Users;
+namespace Phantom.Common.Data.Web.Users;
 
 public abstract record SetUserPasswordError {
 	private SetUserPasswordError() {}

Common/Phantom.Common.Data.Web/Users/UserInfo.cs

@@ -0,0 +1,9 @@
+using MemoryPack;
+
+namespace Phantom.Common.Data.Web.Users;
+
+[MemoryPackable(GenerateType.VersionTolerant)]
+public sealed partial record UserInfo(
+	[property: MemoryPackOrder(0)] Guid Guid,
+	[property: MemoryPackOrder(1)] string Name
+);

Common/Phantom.Common.Data.Web/Users/UsernameRequirementViolation.cs

@@ -0,0 +1,19 @@
+namespace Phantom.Common.Data.Web.Users;
+
+public abstract record UsernameRequirementViolation {
+	private UsernameRequirementViolation() {}
+
+	public sealed record IsEmpty : UsernameRequirementViolation;
+
+	public sealed record TooLong(int MaxLength) : UsernameRequirementViolation;
+}
+
+public static class UsernameRequirementViolationExtensions {
+	public static string ToSentence(this UsernameRequirementViolation violation) {
+		return violation switch {
+			UsernameRequirementViolation.IsEmpty   => "Username must not be empty.",
+			UsernameRequirementViolation.TooLong v => "Username must not be longer than " + v.MaxLength + " character(s).",
+			_                                      => "Unknown error."
+		};
+	}
+}

Common/Phantom.Common.Data/Agent/AgentKeyData.cs

@@ -1,18 +0,0 @@
-namespace Phantom.Common.Data.Agent;
-
-public static class AgentKeyData {
-	private const byte TokenLength = AgentAuthToken.Length;
-
-	public static byte[] ToBytes(byte[] publicKey, AgentAuthToken agentToken) {
-		Span<byte> agentKey = stackalloc byte[TokenLength + publicKey.Length];
-		agentToken.WriteTo(agentKey[..TokenLength]);
-		publicKey.CopyTo(agentKey[TokenLength..]);
-		return agentKey.ToArray();
-	}
-
-	public static (byte[] PublicKey, AgentAuthToken AgentToken) FromBytes(byte[] agentKey) {
-		var token = new AgentAuthToken(agentKey[..TokenLength]);
-		var publicKey = agentKey[TokenLength..];
-		return (publicKey, token);
-	}
-}

Common/Phantom.Common.Data/Agent/AuthToken.cs

@@ -6,14 +6,14 @@ namespace Phantom.Common.Data.Agent;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 [SuppressMessage("ReSharper", "MemberCanBePrivate.Global")]
-public sealed partial class AgentAuthToken {
+public sealed partial class AuthToken {
 	internal const int Length = 12;
 
 	[MemoryPackOrder(0)]
 	[MemoryPackInclude]
 	private readonly byte[] bytes;
 
-	internal AgentAuthToken(byte[]? bytes) {
+	internal AuthToken(byte[]? bytes) {
 		if (bytes == null) {
 			throw new ArgumentNullException(nameof(bytes));
 		}
@@ -25,7 +25,7 @@ public sealed partial class AgentAuthToken {
 		this.bytes = bytes;
 	}
 
-	public bool FixedTimeEquals(AgentAuthToken providedAuthToken) {
+	public bool FixedTimeEquals(AuthToken providedAuthToken) {
 		return CryptographicOperations.FixedTimeEquals(bytes, providedAuthToken.bytes);
 	}
 
@@ -33,7 +33,7 @@ public sealed partial class AgentAuthToken {
 		bytes.CopyTo(span);
 	}
 
-	public static AgentAuthToken Generate() {
+	public static AuthToken Generate() {
-		return new AgentAuthToken(RandomNumberGenerator.GetBytes(Length));
+		return new AuthToken(RandomNumberGenerator.GetBytes(Length));
 	}
 }

Common/Phantom.Common.Data/Agent/ConnectionCommonKey.cs

@@ -0,0 +1,18 @@
+namespace Phantom.Common.Data.Agent;
+
+public readonly record struct ConnectionCommonKey(byte[] CertificatePublicKey, AuthToken AuthToken) {
+	private const byte TokenLength = AuthToken.Length;
+
+	public byte[] ToBytes() {
+		Span<byte> result = stackalloc byte[TokenLength + CertificatePublicKey.Length];
+		AuthToken.WriteTo(result[..TokenLength]);
+		CertificatePublicKey.CopyTo(result[TokenLength..]);
+		return result.ToArray();
+	}
+
+	public static ConnectionCommonKey FromBytes(byte[] agentKey) {
+		var authToken = new AuthToken(agentKey[..TokenLength]);
+		var certificatePublicKey = agentKey[TokenLength..];
+		return new ConnectionCommonKey(certificatePublicKey, authToken);
+	}
+}

Common/Phantom.Common.Logging/PhantomLogger.cs

@@ -27,7 +27,7 @@ public static class PhantomLogger {
 	}
 
 	public static ILogger Create(string name1, string name2) {
-		return Create(name1 + ":" + name2);
+		return Create(ConcatNames(name1, name2));
 	}
 
 	public static ILogger Create<T>() {
@@ -37,11 +37,19 @@ public static class PhantomLogger {
 	public static ILogger Create<T>(string name) {
 		return Create(typeof(T).Name, name);
 	}
+	
+	public static ILogger Create<T>(string name1, string name2) {
+		return Create(typeof(T).Name, ConcatNames(name1, name2));
+	}
 
 	public static ILogger Create<T1, T2>() {
 		return Create(typeof(T1).Name, typeof(T2).Name);
 	}
 
+	private static string ConcatNames(string name1, string name2) {
+		return name1 + ":" + name2;
+	}
+
 	public static void Dispose() {
 		Root.Dispose();
 		Base.Dispose();

Common/Phantom.Common.Messages.Agent/AgentMessageRegistries.cs

@@ -0,0 +1,48 @@
+using Phantom.Common.Data.Replies;
+using Phantom.Common.Logging;
+using Phantom.Common.Messages.Agent.BiDirectional;
+using Phantom.Common.Messages.Agent.ToAgent;
+using Phantom.Common.Messages.Agent.ToController;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Agent; 
+
+public static class AgentMessageRegistries {
+	public static MessageRegistry<IMessageToAgentListener> ToAgent { get; } = new (PhantomLogger.Create("MessageRegistry", nameof(ToAgent)));
+	public static MessageRegistry<IMessageToControllerListener> ToController { get; } = new (PhantomLogger.Create("MessageRegistry", nameof(ToController)));
+	
+	public static IMessageDefinitions<IMessageToAgentListener, IMessageToControllerListener> Definitions { get; } = new MessageDefinitions();
+
+	static AgentMessageRegistries() {
+		ToAgent.Add<RegisterAgentSuccessMessage>(0);
+		ToAgent.Add<RegisterAgentFailureMessage>(1);
+		ToAgent.Add<ConfigureInstanceMessage, InstanceActionResult<ConfigureInstanceResult>>(2);
+		ToAgent.Add<LaunchInstanceMessage, InstanceActionResult<LaunchInstanceResult>>(3);
+		ToAgent.Add<StopInstanceMessage, InstanceActionResult<StopInstanceResult>>(4);
+		ToAgent.Add<SendCommandToInstanceMessage, InstanceActionResult<SendCommandToInstanceResult>>(5);
+		ToAgent.Add<ReplyMessage>(127);
+		
+		ToController.Add<RegisterAgentMessage>(0);
+		ToController.Add<UnregisterAgentMessage>(1);
+		ToController.Add<AgentIsAliveMessage>(2);
+		ToController.Add<AdvertiseJavaRuntimesMessage>(3);
+		ToController.Add<ReportInstanceStatusMessage>(4);
+		ToController.Add<InstanceOutputMessage>(5);
+		ToController.Add<ReportAgentStatusMessage>(6);
+		ToController.Add<ReportInstanceEventMessage>(7);
+		ToController.Add<ReplyMessage>(127);
+	}
+
+	private sealed class MessageDefinitions : IMessageDefinitions<IMessageToAgentListener, IMessageToControllerListener> {
+		public MessageRegistry<IMessageToAgentListener> Outgoing => ToAgent;
+		public MessageRegistry<IMessageToControllerListener> Incoming => ToController;
+
+		public bool IsRegistrationMessage(Type messageType) {
+			return messageType == typeof(RegisterAgentMessage);
+		}
+
+		public IMessage<IMessageToAgentListener, NoReply> CreateReplyMessage( uint sequenceId, byte[] serializedReply) {
+			return new ReplyMessage(sequenceId, serializedReply);
+		}
+	}
+}

Common/Phantom.Common.Messages.Agent/BiDirectional/ReplyMessage.cs

@@ -1,14 +1,14 @@
 using MemoryPack;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.BiDirectional;
+namespace Phantom.Common.Messages.Agent.BiDirectional;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record ReplyMessage(
 	[property: MemoryPackOrder(0)] uint SequenceId,
 	[property: MemoryPackOrder(1)] byte[] SerializedReply
-) : IMessageToServer, IMessageToAgent {
+) : IMessageToController, IMessageToAgent {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleReply(this);
 	}
 

Common/Phantom.Common.Messages.Agent/IMessageToAgent.cs

@@ -1,6 +1,6 @@
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages;
+namespace Phantom.Common.Messages.Agent;
 
 public interface IMessageToAgent<TReply> : IMessage<IMessageToAgentListener, TReply> {}
 

Common/Phantom.Common.Messages.Agent/IMessageToAgentListener.cs

@@ -1,9 +1,9 @@
 using Phantom.Common.Data.Replies;
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.ToAgent;
+using Phantom.Common.Messages.Agent.ToAgent;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages;
+namespace Phantom.Common.Messages.Agent;
 
 public interface IMessageToAgentListener {
 	Task<NoReply> HandleRegisterAgentSuccess(RegisterAgentSuccessMessage message);

Common/Phantom.Common.Messages.Agent/IMessageToController.cs

@@ -0,0 +1,7 @@
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Agent;
+
+public interface IMessageToController<TReply> : IMessage<IMessageToControllerListener, TReply> {}
+
+public interface IMessageToController : IMessageToController<NoReply> {}

Common/Phantom.Common.Messages.Agent/IMessageToControllerListener.cs

@@ -1,11 +1,10 @@
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages; 
+namespace Phantom.Common.Messages.Agent; 
 
-public interface IMessageToServerListener {
+public interface IMessageToControllerListener {
-	bool IsDisposed { get; }
 	Task<NoReply> HandleRegisterAgent(RegisterAgentMessage message);
 	Task<NoReply> HandleUnregisterAgent(UnregisterAgentMessage message);
 	Task<NoReply> HandleAgentIsAlive(AgentIsAliveMessage message);

Common/Phantom.Common.Messages.Agent/ToAgent/ConfigureInstanceMessage.cs

@@ -2,7 +2,7 @@
 using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Replies;
 
-namespace Phantom.Common.Messages.ToAgent;
+namespace Phantom.Common.Messages.Agent.ToAgent;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record ConfigureInstanceMessage(

Common/Phantom.Common.Messages.Agent/ToAgent/LaunchInstanceMessage.cs

@@ -1,7 +1,7 @@
 using MemoryPack;
 using Phantom.Common.Data.Replies;
 
-namespace Phantom.Common.Messages.ToAgent; 
+namespace Phantom.Common.Messages.Agent.ToAgent; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record LaunchInstanceMessage(

Common/Phantom.Common.Messages.Agent/ToAgent/RegisterAgentFailureMessage.cs

@@ -2,7 +2,7 @@
 using Phantom.Common.Data.Replies;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToAgent;
+namespace Phantom.Common.Messages.Agent.ToAgent;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record RegisterAgentFailureMessage(

Common/Phantom.Common.Messages.Agent/ToAgent/RegisterAgentSuccessMessage.cs

@@ -2,7 +2,7 @@
 using MemoryPack;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToAgent;
+namespace Phantom.Common.Messages.Agent.ToAgent;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record RegisterAgentSuccessMessage(

Common/Phantom.Common.Messages.Agent/ToAgent/SendCommandToInstanceMessage.cs

@@ -1,7 +1,7 @@
 using MemoryPack;
 using Phantom.Common.Data.Replies;
 
-namespace Phantom.Common.Messages.ToAgent; 
+namespace Phantom.Common.Messages.Agent.ToAgent; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record SendCommandToInstanceMessage(

Common/Phantom.Common.Messages.Agent/ToAgent/StopInstanceMessage.cs

@@ -2,7 +2,7 @@
 using Phantom.Common.Data.Minecraft;
 using Phantom.Common.Data.Replies;
 
-namespace Phantom.Common.Messages.ToAgent; 
+namespace Phantom.Common.Messages.Agent.ToAgent; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record StopInstanceMessage(

Common/Phantom.Common.Messages.Agent/ToController/AdvertiseJavaRuntimesMessage.cs

@@ -3,13 +3,13 @@ using MemoryPack;
 using Phantom.Common.Data.Java;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer; 
+namespace Phantom.Common.Messages.Agent.ToController; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record AdvertiseJavaRuntimesMessage(
 	[property: MemoryPackOrder(0)] ImmutableArray<TaggedJavaRuntime> Runtimes
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleAdvertiseJavaRuntimes(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/AgentIsAliveMessage.cs

@@ -0,0 +1,11 @@
+using MemoryPack;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Agent.ToController; 
+
+[MemoryPackable(GenerateType.VersionTolerant)]
+public sealed partial record AgentIsAliveMessage : IMessageToController {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
+		return listener.HandleAgentIsAlive(this);
+	}
+}

Common/Phantom.Common.Messages.Agent/ToController/InstanceOutputMessage.cs

@@ -2,14 +2,14 @@ using System.Collections.Immutable;
 using MemoryPack;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer;
+namespace Phantom.Common.Messages.Agent.ToController;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record InstanceOutputMessage(
 	[property: MemoryPackOrder(0)] Guid InstanceGuid,
 	[property: MemoryPackOrder(1)] ImmutableArray<string> Lines
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleInstanceOutput(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/RegisterAgentMessage.cs

@@ -2,14 +2,14 @@
 using Phantom.Common.Data.Agent;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer;
+namespace Phantom.Common.Messages.Agent.ToController;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record RegisterAgentMessage(
-	[property: MemoryPackOrder(0)] AgentAuthToken AuthToken,
+	[property: MemoryPackOrder(0)] AuthToken AuthToken,
 	[property: MemoryPackOrder(1)] AgentInfo AgentInfo
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleRegisterAgent(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/ReportAgentStatusMessage.cs

@@ -2,14 +2,14 @@
 using Phantom.Common.Data;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer; 
+namespace Phantom.Common.Messages.Agent.ToController; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record ReportAgentStatusMessage(
 	[property: MemoryPackOrder(0)] int RunningInstanceCount,
 	[property: MemoryPackOrder(1)] RamAllocationUnits RunningInstanceMemory
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleReportAgentStatus(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/ReportInstanceEventMessage.cs

@@ -2,7 +2,7 @@
 using Phantom.Common.Data.Instance;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer; 
+namespace Phantom.Common.Messages.Agent.ToController; 
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record ReportInstanceEventMessage(
@@ -10,8 +10,8 @@ public sealed partial record ReportInstanceEventMessage(
 	[property: MemoryPackOrder(1)] DateTime UtcTime,
 	[property: MemoryPackOrder(2)] Guid InstanceGuid,
 	[property: MemoryPackOrder(3)] IInstanceEvent Event
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleReportInstanceEvent(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/ReportInstanceStatusMessage.cs

@@ -2,14 +2,14 @@
 using Phantom.Common.Data.Instance;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer;
+namespace Phantom.Common.Messages.Agent.ToController;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record ReportInstanceStatusMessage(
 	[property: MemoryPackOrder(0)] Guid InstanceGuid,
 	[property: MemoryPackOrder(1)] IInstanceStatus InstanceStatus
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleReportInstanceStatus(this);
 	}
 }

Common/Phantom.Common.Messages.Agent/ToController/UnregisterAgentMessage.cs

@@ -1,13 +1,13 @@
 using MemoryPack;
 using Phantom.Utils.Rpc.Message;
 
-namespace Phantom.Common.Messages.ToServer;
+namespace Phantom.Common.Messages.Agent.ToController;
 
 [MemoryPackable(GenerateType.VersionTolerant)]
 public sealed partial record UnregisterAgentMessage(
 	[property: MemoryPackOrder(0)] Guid AgentGuid
-) : IMessageToServer {
+) : IMessageToController {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
 		return listener.HandleUnregisterAgent(this);
 	}
 }

Common/Phantom.Common.Messages.Web/BiDirectional/ReplyMessage.cs

@@ -0,0 +1,18 @@
+using MemoryPack;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web.BiDirectional;
+
+[MemoryPackable(GenerateType.VersionTolerant)]
+public sealed partial record ReplyMessage(
+	[property: MemoryPackOrder(0)] uint SequenceId,
+	[property: MemoryPackOrder(1)] byte[] SerializedReply
+) : IMessageToController, IMessageToWeb {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
+		return listener.HandleReply(this);
+	}
+
+	public Task<NoReply> Accept(IMessageToWebListener listener) {
+		return listener.HandleReply(this);
+	}
+}

Common/Phantom.Common.Messages.Web/IMessageToController.cs

@@ -0,0 +1,7 @@
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web;
+
+public interface IMessageToController<TReply> : IMessage<IMessageToControllerListener, TReply> {}
+
+public interface IMessageToController : IMessageToController<NoReply> {}

Common/Phantom.Common.Messages.Web/IMessageToControllerListener.cs

@@ -0,0 +1,11 @@
+using Phantom.Common.Data.Web.Users;
+using Phantom.Common.Messages.Web.BiDirectional;
+using Phantom.Common.Messages.Web.ToController;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web; 
+
+public interface IMessageToControllerListener {
+	Task<ICreateOrUpdateAdministratorUserResult> CreateOrUpdateAdministratorUser(CreateOrUpdateAdministratorUser message);
+	Task<NoReply> HandleReply(ReplyMessage message);
+}

Common/Phantom.Common.Messages.Web/IMessageToWeb.cs

@@ -0,0 +1,7 @@
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web;
+
+public interface IMessageToWeb<TReply> : IMessage<IMessageToWebListener, TReply> {}
+
+public interface IMessageToWeb : IMessageToWeb<NoReply> {}

Common/Phantom.Common.Messages.Web/IMessageToWebListener.cs

@@ -0,0 +1,8 @@
+using Phantom.Common.Messages.Web.BiDirectional;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web;
+
+public interface IMessageToWebListener {
+	Task<NoReply> HandleReply(ReplyMessage message);
+}

Common/Phantom.Common.Messages.Web/Phantom.Common.Messages.Web.csproj

@@ -0,0 +1,15 @@
+<Project Sdk="Microsoft.NET.Sdk">
+  
+  <PropertyGroup>
+    <ImplicitUsings>enable</ImplicitUsings>
+    <Nullable>enable</Nullable>
+  </PropertyGroup>
+  
+  <ItemGroup>
+    <ProjectReference Include="..\Phantom.Common.Logging\Phantom.Common.Logging.csproj" />
+    <ProjectReference Include="..\Phantom.Common.Data\Phantom.Common.Data.csproj" />
+    <ProjectReference Include="..\Phantom.Common.Data.Web\Phantom.Common.Data.Web.csproj" />
+    <ProjectReference Include="..\..\Utils\Phantom.Utils.Rpc\Phantom.Utils.Rpc.csproj" />
+  </ItemGroup>
+
+</Project>

Common/Phantom.Common.Messages.Web/ToController/CreateOrUpdateAdministratorUser.cs

@@ -0,0 +1,14 @@
+using MemoryPack;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web.ToController; 
+
+[MemoryPackable(GenerateType.VersionTolerant)]
+public sealed partial record CreateOrUpdateAdministratorUser(
+	[property: MemoryPackOrder(0)] string Username,
+	[property: MemoryPackOrder(1)] string Password
+) : IMessageToController {
+	public Task<NoReply> Accept(IMessageToControllerListener listener) {
+		return listener.CreateOrUpdateAdministratorUser(this);
+	}
+}

Common/Phantom.Common.Messages.Web/WebMessageRegistries.cs

@@ -0,0 +1,33 @@
+using Phantom.Common.Logging;
+using Phantom.Common.Messages.Web.BiDirectional;
+using Phantom.Common.Messages.Web.ToController;
+using Phantom.Utils.Rpc.Message;
+
+namespace Phantom.Common.Messages.Web; 
+
+public static class WebMessageRegistries {
+	public static MessageRegistry<IMessageToControllerListener> ToController { get; } = new (PhantomLogger.Create("MessageRegistry", nameof(ToController)));
+	public static MessageRegistry<IMessageToWebListener> ToWeb { get; } = new (PhantomLogger.Create("MessageRegistry", nameof(ToWeb)));
+	
+	public static IMessageDefinitions<IMessageToWebListener, IMessageToControllerListener> Definitions { get; } = new MessageDefinitions();
+
+	static WebMessageRegistries() {
+		ToController.Add<CreateOrUpdateAdministratorUser>(1);
+		ToController.Add<ReplyMessage>(127);
+		
+		ToWeb.Add<ReplyMessage>(127);
+	}
+
+	private sealed class MessageDefinitions : IMessageDefinitions<IMessageToWebListener, IMessageToControllerListener> {
+		public MessageRegistry<IMessageToWebListener> Outgoing => ToWeb;
+		public MessageRegistry<IMessageToControllerListener> Incoming => ToController;
+
+		public bool IsRegistrationMessage(Type messageType) {
+			return false;
+		}
+
+		public IMessage<IMessageToWebListener, NoReply> CreateReplyMessage( uint sequenceId, byte[] serializedReply) {
+			return new ReplyMessage(sequenceId, serializedReply);
+		}
+	}
+}

Common/Phantom.Common.Messages/IMessageToServer.cs

@@ -1,7 +0,0 @@
-using Phantom.Utils.Rpc.Message;
-
-namespace Phantom.Common.Messages;
-
-public interface IMessageToServer<TReply> : IMessage<IMessageToServerListener, TReply> {}
-
-public interface IMessageToServer : IMessageToServer<NoReply> {}

Common/Phantom.Common.Messages/MessageRegistries.cs

@@ -1,33 +0,0 @@
-using Phantom.Common.Data.Replies;
-using Phantom.Common.Logging;
-using Phantom.Common.Messages.BiDirectional;
-using Phantom.Common.Messages.ToAgent;
-using Phantom.Common.Messages.ToServer;
-using Phantom.Utils.Rpc.Message;
-
-namespace Phantom.Common.Messages; 
-
-public static class MessageRegistries {
-	public static MessageRegistry<IMessageToAgentListener> ToAgent { get; } = new (PhantomLogger.Create("MessageRegistry:ToAgent"));
-	public static MessageRegistry<IMessageToServerListener> ToServer { get; } = new (PhantomLogger.Create("MessageRegistry:ToServer"));
-
-	static MessageRegistries() {
-		ToAgent.Add<RegisterAgentSuccessMessage>(0);
-		ToAgent.Add<RegisterAgentFailureMessage>(1);
-		ToAgent.Add<ConfigureInstanceMessage, InstanceActionResult<ConfigureInstanceResult>>(2);
-		ToAgent.Add<LaunchInstanceMessage, InstanceActionResult<LaunchInstanceResult>>(3);
-		ToAgent.Add<StopInstanceMessage, InstanceActionResult<StopInstanceResult>>(4);
-		ToAgent.Add<SendCommandToInstanceMessage, InstanceActionResult<SendCommandToInstanceResult>>(5);
-		ToAgent.Add<ReplyMessage>(127);
-		
-		ToServer.Add<RegisterAgentMessage>(0);
-		ToServer.Add<UnregisterAgentMessage>(1);
-		ToServer.Add<AgentIsAliveMessage>(2);
-		ToServer.Add<AdvertiseJavaRuntimesMessage>(3);
-		ToServer.Add<ReportInstanceStatusMessage>(4);
-		ToServer.Add<InstanceOutputMessage>(5);
-		ToServer.Add<ReportAgentStatusMessage>(6);
-		ToServer.Add<ReportInstanceEventMessage>(7);
-		ToServer.Add<ReplyMessage>(127);
-	}
-}

Common/Phantom.Common.Messages/ToServer/AgentIsAliveMessage.cs

@@ -1,11 +0,0 @@
-using MemoryPack;
-using Phantom.Utils.Rpc.Message;
-
-namespace Phantom.Common.Messages.ToServer; 
-
-[MemoryPackable(GenerateType.VersionTolerant)]
-public sealed partial record AgentIsAliveMessage : IMessageToServer {
-	public Task<NoReply> Accept(IMessageToServerListener listener) {
-		return listener.HandleAgentIsAlive(this);
-	}
-}

Controller/Phantom.Controller.Database.Postgres/ApplicationDbContextFactory.cs

@@ -0,0 +1,28 @@
+using Microsoft.EntityFrameworkCore;
+using Microsoft.EntityFrameworkCore.Infrastructure;
+using Npgsql.EntityFrameworkCore.PostgreSQL.Infrastructure;
+
+namespace Phantom.Controller.Database.Postgres; 
+
+public sealed class ApplicationDbContextFactory : IDatabaseProvider {
+	private readonly PooledDbContextFactory<ApplicationDbContext> factory;
+	
+	public ApplicationDbContextFactory(string connectionString) {
+		this.factory = new PooledDbContextFactory<ApplicationDbContext>(CreateOptions(connectionString), poolSize: 32);
+	}
+
+	public ApplicationDbContext Provide() {
+		return factory.CreateDbContext();
+	}
+
+	private static DbContextOptions<ApplicationDbContext> CreateOptions(string connectionString) {
+		var builder = new DbContextOptionsBuilder<ApplicationDbContext>();
+		builder.UseNpgsql(connectionString, ConfigureOptions);
+		return builder.Options;
+	}
+
+	private static void ConfigureOptions(NpgsqlDbContextOptionsBuilder options) {
+		options.CommandTimeout(10);
+		options.MigrationsAssembly(typeof(ApplicationDbContextDesignFactory).Assembly.FullName);
+	}
+}

Controller/Phantom.Controller.Database/DatabaseMigrator.cs

@@ -0,0 +1,25 @@
+using Microsoft.EntityFrameworkCore;
+using Phantom.Common.Logging;
+using Phantom.Utils.Tasks;
+using Serilog;
+
+namespace Phantom.Controller.Database; 
+
+public static class DatabaseMigrator {
+	private static readonly ILogger Logger = PhantomLogger.Create(nameof(DatabaseMigrator));
+	
+	public static async Task Run(IDatabaseProvider databaseProvider, CancellationToken cancellationToken) {
+		await using var ctx = databaseProvider.Provide();
+
+		Logger.Information("Connecting to database...");
+
+		var retryConnection = new Throttler(TimeSpan.FromSeconds(10));
+		while (!await ctx.Database.CanConnectAsync(cancellationToken)) {
+			Logger.Warning("Cannot connect to database, retrying...");
+			await retryConnection.Wait();
+		}
+
+		Logger.Information("Running migrations...");
+		await ctx.Database.MigrateAsync(CancellationToken.None);
+	}
+}

Controller/Phantom.Controller.Database/DatabaseProvider.cs

@@ -1,30 +0,0 @@
-using Microsoft.Extensions.DependencyInjection;
-
-namespace Phantom.Controller.Database; 
-
-public sealed class DatabaseProvider {
-	private readonly IServiceScopeFactory serviceScopeFactory;
-	
-	public DatabaseProvider(IServiceScopeFactory serviceScopeFactory) {
-		this.serviceScopeFactory = serviceScopeFactory;
-	}
-
-	public Scope CreateScope() {
-		return new Scope(serviceScopeFactory.CreateScope());
-	}
-	
-	public readonly struct Scope : IDisposable {
-		private readonly IServiceScope scope;
-
-		public ApplicationDbContext Ctx { get; }
-
-		internal Scope(IServiceScope scope) {
-			this.scope = scope;
-			this.Ctx = scope.ServiceProvider.GetRequiredService<ApplicationDbContext>();
-		}
-
-		public void Dispose() {
-			scope.Dispose();
-		}
-	}
-}

Controller/Phantom.Controller.Database/Entities/UserEntity.cs

@@ -1,5 +1,6 @@
 using System.ComponentModel.DataAnnotations;
 using System.ComponentModel.DataAnnotations.Schema;
+using Phantom.Common.Data.Web.Users;
 
 namespace Phantom.Controller.Database.Entities; 
 
@@ -16,4 +17,8 @@ public sealed class UserEntity {
 		Name = name;
 		PasswordHash = null!;
 	}
+	
+	public UserInfo ToUserInfo() {
+		return new UserInfo(UserGuid, Name);
+	}
 }

Controller/Phantom.Controller.Database/IDatabaseProvider.cs

@@ -0,0 +1,5 @@
+namespace Phantom.Controller.Database; 
+
+public interface IDatabaseProvider {
+	ApplicationDbContext Provide();
+}

Controller/Phantom.Controller.Database/Phantom.Controller.Database.csproj

@@ -15,6 +15,8 @@
   
   <ItemGroup>
     <ProjectReference Include="..\..\Common\Phantom.Common.Data\Phantom.Common.Data.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Data.Web\Phantom.Common.Data.Web.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Logging\Phantom.Common.Logging.csproj" />
   </ItemGroup>
 
 </Project>

Controller/Phantom.Controller.Rpc/Phantom.Controller.Rpc.csproj

@@ -6,7 +6,8 @@
   </PropertyGroup>
   
   <ItemGroup>
-    <ProjectReference Include="..\..\Common\Phantom.Common.Messages\Phantom.Common.Messages.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Messages.Agent\Phantom.Common.Messages.Agent.csproj" />
+    <ProjectReference Include="..\..\Common\Phantom.Common.Messages.Web\Phantom.Common.Messages.Web.csproj" />
   </ItemGroup>
   
 </Project>

Controller/Phantom.Controller.Rpc/RpcClientConnection.cs

@@ -1,28 +1,29 @@
 using NetMQ;
 using NetMQ.Sockets;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.BiDirectional;
 using Phantom.Utils.Rpc.Message;
 
 namespace Phantom.Controller.Rpc;
 
-public sealed class RpcClientConnection {
+public sealed class RpcClientConnection<TListener> {
 	private readonly ServerSocket socket;
 	private readonly uint routingId;
 
+	private readonly MessageRegistry<TListener> messageRegistry;
 	private readonly MessageReplyTracker messageReplyTracker;
 
 	internal event EventHandler<RpcClientConnectionClosedEventArgs>? Closed;
 	private bool isClosed;
 
-	internal RpcClientConnection(ServerSocket socket, uint routingId, MessageReplyTracker messageReplyTracker) {
+	internal RpcClientConnection(ServerSocket socket, uint routingId, MessageRegistry<TListener> messageRegistry, MessageReplyTracker messageReplyTracker) {
 		this.socket = socket;
 		this.routingId = routingId;
+		this.messageRegistry = messageRegistry;
 		this.messageReplyTracker = messageReplyTracker;
 	}
 
-	public bool IsSame(RpcClientConnection other) {
+	public bool IsSame(RpcClientConnection<TListener> other) {
-		return this.routingId == other.routingId;
+		return this.routingId == other.routingId && this.socket == other.socket;
 	}
 
 	public void Close() {
@@ -34,25 +35,25 @@ public sealed class RpcClientConnection {
 		}
 	}
 
-	public async Task Send<TMessage>(TMessage message) where TMessage : IMessageToAgent {
+	public async Task Send<TMessage>(TMessage message) where TMessage : IMessage<TListener, NoReply> {
 		if (isClosed) {
 			return;
 		}
 		
-		var bytes = MessageRegistries.ToAgent.Write(message).ToArray();
+		var bytes = messageRegistry.Write(message).ToArray();
 		if (bytes.Length > 0) {
 			await socket.SendAsync(routingId, bytes);
 		}
 	}
 
-	public async Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessageToAgent<TReply> where TReply : class {
+	public async Task<TReply?> Send<TMessage, TReply>(TMessage message, TimeSpan waitForReplyTime, CancellationToken waitForReplyCancellationToken) where TMessage : IMessage<TListener, TReply> where TReply : class {
 		if (isClosed) {
 			return null;
 		}
 		
 		var sequenceId = messageReplyTracker.RegisterReply();
 		
-		var bytes = MessageRegistries.ToAgent.Write<TMessage, TReply>(sequenceId, message).ToArray();
+		var bytes = messageRegistry.Write<TMessage, TReply>(sequenceId, message).ToArray();
 		if (bytes.Length == 0) {
 			messageReplyTracker.ForgetReply(sequenceId);
 			return null;

Controller/Phantom.Controller.Rpc/RpcLauncher.cs

@@ -1,122 +0,0 @@
-using NetMQ.Sockets;
-using Phantom.Common.Messages;
-using Phantom.Common.Messages.BiDirectional;
-using Phantom.Common.Messages.ToServer;
-using Phantom.Utils.Rpc;
-using Phantom.Utils.Rpc.Message;
-using Phantom.Utils.Tasks;
-using Serilog;
-using Serilog.Events;
-
-namespace Phantom.Controller.Rpc;
-
-public sealed class RpcLauncher : RpcRuntime<ServerSocket> {
-	public static Task Launch(RpcConfiguration config, Func<RpcClientConnection, IMessageToServerListener> listenerFactory, CancellationToken cancellationToken) {
-		var socket = new ServerSocket();
-		var options = socket.Options;
-
-		options.CurveServer = true;
-		options.CurveCertificate = config.ServerCertificate;
-
-		return new RpcLauncher(config, socket, listenerFactory, cancellationToken).Launch();
-	}
-
-	private readonly RpcConfiguration config;
-	private readonly Func<RpcClientConnection, IMessageToServerListener> listenerFactory;
-	private readonly CancellationToken cancellationToken;
-
-	private RpcLauncher(RpcConfiguration config, ServerSocket socket, Func<RpcClientConnection, IMessageToServerListener> listenerFactory, CancellationToken cancellationToken) : base(config, socket) {
-		this.config = config;
-		this.listenerFactory = listenerFactory;
-		this.cancellationToken = cancellationToken;
-	}
-
-	protected override void Connect(ServerSocket socket) {
-		var logger = config.RuntimeLogger;
-		var url = config.TcpUrl;
-
-		logger.Information("Starting ZeroMQ server on {Url}...", url);
-		socket.Bind(url);
-		logger.Information("ZeroMQ server initialized, listening for agent connections on port {Port}.", config.Port);
-	}
-
-	protected override void Run(ServerSocket socket, MessageReplyTracker replyTracker, TaskManager taskManager) {
-		var logger = config.RuntimeLogger;
-		var clients = new Dictionary<ulong, Client>();
-
-		void OnConnectionClosed(object? sender, RpcClientConnectionClosedEventArgs e) {
-			clients.Remove(e.RoutingId);
-			logger.Debug("Closed connection to {RoutingId}.", e.RoutingId);
-		}
-
-		while (!cancellationToken.IsCancellationRequested) {
-			var (routingId, data) = socket.Receive(cancellationToken);
-
-			if (data.Length == 0) {
-				LogMessageType(logger, routingId, data);
-				continue;
-			}
-
-			if (!clients.TryGetValue(routingId, out var client)) {
-				if (!CheckIsAgentRegistrationMessage(data, logger, routingId)) {
-					continue;
-				}
-
-				var connection = new RpcClientConnection(socket, routingId, replyTracker);
-				connection.Closed += OnConnectionClosed;
-
-				client = new Client(connection, listenerFactory, logger, taskManager, cancellationToken);
-				clients[routingId] = client;
-			}
-
-			LogMessageType(logger, routingId, data);
-			MessageRegistries.ToServer.Handle(data, client);
-			
-			client.CloseIfDisposed();
-		}
-
-		foreach (var client in clients.Values) {
-			client.Connection.Closed -= OnConnectionClosed;
-		}
-	}
-
-	private static void LogMessageType(ILogger logger, uint routingId, ReadOnlyMemory<byte> data) {
-		if (!logger.IsEnabled(LogEventLevel.Verbose)) {
-			return;
-		}
-
-		if (data.Length > 0 && MessageRegistries.ToServer.TryGetType(data, out var type)) {
-			logger.Verbose("Received {MessageType} ({Bytes} B) from {RoutingId}.", type.Name, data.Length, routingId);
-		}
-		else {
-			logger.Verbose("Received {Bytes} B message from {RoutingId}.", data.Length, routingId);
-		}
-	}
-
-	private static bool CheckIsAgentRegistrationMessage(ReadOnlyMemory<byte> data, ILogger logger, uint routingId) {
-		if (MessageRegistries.ToServer.TryGetType(data, out var type) && type == typeof(RegisterAgentMessage)) {
-			return true;
-		}
-
-		logger.Warning("Received {MessageType} from a non-registered agent {RoutingId}.", type?.Name ?? "unknown message", routingId);
-		return false;
-	}
-
-	private sealed class Client : MessageHandler<IMessageToServerListener> {
-		public RpcClientConnection Connection { get; }
-
-		public Client(RpcClientConnection connection, Func<RpcClientConnection, IMessageToServerListener> listenerFactory, ILogger logger, TaskManager taskManager, CancellationToken cancellationToken) : base(listenerFactory(connection), logger, taskManager, cancellationToken) {
-			Connection = connection;
-		}
-
-		protected override Task SendReply(uint sequenceId, byte[] serializedReply) {
-			return Connection.Send(new ReplyMessage(sequenceId, serializedReply));
-		}
-
-		public void CloseIfDisposed() {
-			if (Listener.IsDisposed) {
-				Connection.Close();
-			}
-		}
-	}
-}

Controller/Phantom.Controller.Rpc/RpcRuntime.cs

@@ -0,0 +1,126 @@
+using NetMQ.Sockets;
+using Phantom.Utils.Rpc;
+using Phantom.Utils.Rpc.Message;
+using Phantom.Utils.Tasks;
+using Serilog;
+using Serilog.Events;
+
+namespace Phantom.Controller.Rpc;
+
+public static class RpcRuntime {
+	public static Task Launch<TOutgoingListener, TIncomingListener>(RpcConfiguration config, IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions, Func<RpcClientConnection<TOutgoingListener>, TIncomingListener> listenerFactory, CancellationToken cancellationToken) {
+		return RpcRuntime<TOutgoingListener, TIncomingListener>.Launch(config, messageDefinitions, listenerFactory, cancellationToken);
+	}
+}
+
+internal sealed class RpcRuntime<TOutgoingListener, TIncomingListener> : RpcRuntime<ServerSocket> {
+	internal static Task Launch(RpcConfiguration config, IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions, Func<RpcClientConnection<TOutgoingListener>, TIncomingListener> listenerFactory, CancellationToken cancellationToken) {
+		return new RpcRuntime<TOutgoingListener, TIncomingListener>(config, messageDefinitions, listenerFactory, cancellationToken).Launch();
+	}
+
+	private static ServerSocket CreateSocket(RpcConfiguration config) {
+		var socket = new ServerSocket();
+		var options = socket.Options;
+
+		options.CurveServer = true;
+		options.CurveCertificate = config.ServerCertificate;
+		
+		return socket;
+	}
+	
+	private readonly RpcConfiguration config;
+	private readonly IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions;
+	private readonly Func<RpcClientConnection<TOutgoingListener>, TIncomingListener> listenerFactory;
+	private readonly CancellationToken cancellationToken;
+
+	private RpcRuntime(RpcConfiguration config, IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions, Func<RpcClientConnection<TOutgoingListener>, TIncomingListener> listenerFactory, CancellationToken cancellationToken) : base(config, CreateSocket(config)) {
+		this.config = config;
+		this.messageDefinitions = messageDefinitions;
+		this.listenerFactory = listenerFactory;
+		this.cancellationToken = cancellationToken;
+	}
+
+	protected override void Connect(ServerSocket socket) {
+		var logger = config.RuntimeLogger;
+		var url = config.TcpUrl;
+
+		logger.Information("Starting ZeroMQ server on {Url}...", url);
+		socket.Bind(url);
+		logger.Information("ZeroMQ server initialized, listening for connections on port {Port}.", config.Port);
+	}
+
+	protected override void Run(ServerSocket socket, MessageReplyTracker replyTracker, TaskManager taskManager) {
+		var logger = config.RuntimeLogger;
+		var clients = new Dictionary<ulong, Client>();
+
+		void OnConnectionClosed(object? sender, RpcClientConnectionClosedEventArgs e) {
+			clients.Remove(e.RoutingId);
+			logger.Debug("Closed connection to {RoutingId}.", e.RoutingId);
+		}
+
+		while (!cancellationToken.IsCancellationRequested) {
+			var (routingId, data) = socket.Receive(cancellationToken);
+
+			if (data.Length == 0) {
+				LogMessageType(logger, routingId, data);
+				continue;
+			}
+
+			if (!clients.TryGetValue(routingId, out var client)) {
+				if (!CheckIsRegistrationMessage(data, logger, routingId)) {
+					continue;
+				}
+
+				var connection = new RpcClientConnection<TOutgoingListener>(socket, routingId, messageDefinitions.Outgoing, replyTracker);
+				connection.Closed += OnConnectionClosed;
+
+				client = new Client(connection, messageDefinitions, listenerFactory(connection), logger, taskManager, cancellationToken);
+				clients[routingId] = client;
+			}
+
+			LogMessageType(logger, routingId, data);
+			messageDefinitions.Incoming.Handle(data, client);
+		}
+
+		foreach (var client in clients.Values) {
+			client.Connection.Closed -= OnConnectionClosed;
+		}
+	}
+
+	private void LogMessageType(ILogger logger, uint routingId, ReadOnlyMemory<byte> data) {
+		if (!logger.IsEnabled(LogEventLevel.Verbose)) {
+			return;
+		}
+
+		if (data.Length > 0 && messageDefinitions.Incoming.TryGetType(data, out var type)) {
+			logger.Verbose("Received {MessageType} ({Bytes} B) from {RoutingId}.", type.Name, data.Length, routingId);
+		}
+		else {
+			logger.Verbose("Received {Bytes} B message from {RoutingId}.", data.Length, routingId);
+		}
+	}
+
+	private bool CheckIsRegistrationMessage(ReadOnlyMemory<byte> data, ILogger logger, uint routingId) {
+		if (messageDefinitions.Incoming.TryGetType(data, out var type) && messageDefinitions.IsRegistrationMessage(type)) {
+			return true;
+		}
+
+		logger.Warning("Received {MessageType} from {RoutingId} who is not registered.", type?.Name ?? "unknown message", routingId);
+		return false;
+	}
+	
+	private sealed class Client : MessageHandler<TIncomingListener> {
+		public RpcClientConnection<TOutgoingListener> Connection { get; }
+		
+		private readonly IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions;
+		
+		public Client(RpcClientConnection<TOutgoingListener> connection, IMessageDefinitions<TOutgoingListener, TIncomingListener> messageDefinitions, TIncomingListener listener, ILogger logger, TaskManager taskManager, CancellationToken cancellationToken) : base(listener, logger, taskManager, cancellationToken) {
+			this.Connection = connection;
+			this.messageDefinitions = messageDefinitions;
+		}
+	
+		protected override Task SendReply(uint sequenceId, byte[] serializedReply) {
+			return Connection.Send(messageDefinitions.CreateReplyMessage(sequenceId, serializedReply));
+		}
+	}
+}

Controller/Phantom.Controller.Services/Agents/AgentConnection.cs

@@ -1,16 +1,16 @@
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
 using Phantom.Controller.Rpc;
 
 namespace Phantom.Controller.Services.Agents;
 
 sealed class AgentConnection {
-	private readonly RpcClientConnection connection;
+	private readonly RpcClientConnection<IMessageToAgentListener> connection;
 
-	internal AgentConnection(RpcClientConnection connection) {
+	internal AgentConnection(RpcClientConnection<IMessageToAgentListener> connection) {
 		this.connection = connection;
 	}
 
-	public bool IsSame(RpcClientConnection connection) {
+	public bool IsSame(RpcClientConnection<IMessageToAgentListener> connection) {
 		return this.connection.IsSame(connection);
 	}
 

Controller/Phantom.Controller.Services/Agents/AgentManager.cs

@@ -3,8 +3,8 @@ using Phantom.Common.Data;
 using Phantom.Common.Data.Agent;
 using Phantom.Common.Data.Replies;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.ToAgent;
+using Phantom.Common.Messages.Agent.ToAgent;
 using Phantom.Controller.Database;
 using Phantom.Controller.Rpc;
 using Phantom.Controller.Services.Instances;
@@ -26,20 +26,20 @@ public sealed class AgentManager {
 	public EventSubscribers<ImmutableArray<Agent>> AgentsChanged => agents.Subs;
 
 	private readonly CancellationToken cancellationToken;
-	private readonly AgentAuthToken authToken;
+	private readonly AuthToken authToken;
-	private readonly DatabaseProvider databaseProvider;
+	private readonly IDatabaseProvider databaseProvider;
 
-	public AgentManager(ServiceConfiguration configuration, AgentAuthToken authToken, DatabaseProvider databaseProvider, TaskManager taskManager) {
+	public AgentManager(AuthToken authToken, IDatabaseProvider databaseProvider, TaskManager taskManager, CancellationToken cancellationToken) {
-		this.cancellationToken = configuration.CancellationToken;
 		this.authToken = authToken;
 		this.databaseProvider = databaseProvider;
+		this.cancellationToken = cancellationToken;
 		taskManager.Run("Refresh agent status loop", RefreshAgentStatus);
 	}
 
-	public async Task Initialize() {
+	internal async Task Initialize() {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
 
-		await foreach (var entity in scope.Ctx.Agents.AsAsyncEnumerable().WithCancellation(cancellationToken)) {
+		await foreach (var entity in ctx.Agents.AsAsyncEnumerable().WithCancellation(cancellationToken)) {
 			var agent = new Agent(entity.AgentGuid, entity.Name, entity.ProtocolVersion, entity.BuildVersion, entity.MaxInstances, entity.MaxMemory);
 			if (!agents.ByGuid.AddOrReplaceIf(agent.Guid, agent, static oldAgent => oldAgent.IsOffline)) {
 				// TODO
@@ -52,7 +52,7 @@ public sealed class AgentManager {
 		return agents.ByGuid.ToImmutable();
 	}
 
-	internal async Task<bool> RegisterAgent(AgentAuthToken authToken, AgentInfo agentInfo, InstanceManager instanceManager, RpcClientConnection connection) {
+	internal async Task<bool> RegisterAgent(AuthToken authToken, AgentInfo agentInfo, InstanceManager instanceManager, RpcClientConnection<IMessageToAgentListener> connection) {
 		if (!this.authToken.FixedTimeEquals(authToken)) {
 			await connection.Send(new RegisterAgentFailureMessage(RegisterAgentFailure.InvalidToken));
 			return false;
@@ -68,8 +68,8 @@ public sealed class AgentManager {
 			oldAgent.Connection?.Close();
 		}
 
-		using (var scope = databaseProvider.CreateScope()) {
+		await using (var ctx = databaseProvider.Provide()) {
-			var entity = scope.Ctx.AgentUpsert.Fetch(agent.Guid);
+			var entity = ctx.AgentUpsert.Fetch(agent.Guid);
 
 			entity.Name = agent.Name;
 			entity.ProtocolVersion = agent.ProtocolVersion;
@@ -77,7 +77,7 @@ public sealed class AgentManager {
 			entity.MaxInstances = agent.MaxInstances;
 			entity.MaxMemory = agent.MaxMemory;
 
-			await scope.Ctx.SaveChangesAsync(cancellationToken);
+			await ctx.SaveChangesAsync(cancellationToken);
 		}
 
 		Logger.Information("Registered agent \"{Name}\" (GUID {Guid}).", agent.Name, agent.Guid);
@@ -88,7 +88,7 @@ public sealed class AgentManager {
 		return true;
 	}
 
-	internal bool UnregisterAgent(Guid agentGuid, RpcClientConnection connection) {
+	internal bool UnregisterAgent(Guid agentGuid, RpcClientConnection<IMessageToAgentListener> connection) {
 		if (agents.ByGuid.TryReplaceIf(agentGuid, static oldAgent => oldAgent.AsOffline(), oldAgent => oldAgent.Connection?.IsSame(connection) == true)) {
 			Logger.Information("Unregistered agent with GUID {Guid}.", agentGuid);
 			return true;

Controller/Phantom.Controller.Services/Audit/AuditLog.cs

@@ -1,5 +1,4 @@
-using Microsoft.AspNetCore.Components.Authorization;
+using Microsoft.EntityFrameworkCore;
-using Microsoft.EntityFrameworkCore;
 using Phantom.Controller.Database;
 using Phantom.Controller.Database.Entities;
 using Phantom.Controller.Database.Enums;
@@ -9,16 +8,14 @@ using Phantom.Utils.Tasks;
 namespace Phantom.Controller.Services.Audit;
 
 public sealed partial class AuditLog {
-	private readonly CancellationToken cancellationToken;
+	private readonly IDatabaseProvider databaseProvider;
-	private readonly DatabaseProvider databaseProvider;
-	private readonly AuthenticationStateProvider authenticationStateProvider;
 	private readonly TaskManager taskManager;
+	private readonly CancellationToken cancellationToken;
 
-	public AuditLog(ServiceConfiguration serviceConfiguration, DatabaseProvider databaseProvider, AuthenticationStateProvider authenticationStateProvider, TaskManager taskManager) {
+	public AuditLog(IDatabaseProvider databaseProvider, TaskManager taskManager, CancellationToken cancellationToken) {
-		this.cancellationToken = serviceConfiguration.CancellationToken;
 		this.databaseProvider = databaseProvider;
-		this.authenticationStateProvider = authenticationStateProvider;
 		this.taskManager = taskManager;
+		this.cancellationToken = cancellationToken;
 	}
 	
 	private async Task<Guid?> GetCurrentAuthenticatedUserId() {
@@ -27,9 +24,9 @@ public sealed partial class AuditLog {
 	}
 
 	private async Task AddEntityToDatabase(AuditLogEntity logEntity) {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
-		scope.Ctx.AuditLog.Add(logEntity);
+		ctx.AuditLog.Add(logEntity);
-		await scope.Ctx.SaveChangesAsync(cancellationToken);
+		await ctx.SaveChangesAsync(cancellationToken);
 	}
 
 	private void AddItem(Guid? userGuid, AuditLogEventType eventType, string subjectId, Dictionary<string, object?>? extra = null) {
@@ -42,13 +39,13 @@ public sealed partial class AuditLog {
 	}
 
 	public async Task<AuditLogItem[]> GetItems(int count, CancellationToken cancellationToken) {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
-		return await scope.Ctx.AuditLog
+		return await ctx.AuditLog
-		                  .Include(static entity => entity.User)
+		                .Include(static entity => entity.User)
-		                  .AsQueryable()
+		                .AsQueryable()
-		                  .OrderByDescending(static entity => entity.UtcTime)
+		                .OrderByDescending(static entity => entity.UtcTime)
-		                  .Take(count)
+		                .Take(count)
-		                  .Select(static entity => new AuditLogItem(entity.UtcTime, entity.UserGuid, entity.User == null ? null : entity.User.Name, entity.EventType, entity.SubjectType, entity.SubjectId, entity.Data))
+		                .Select(static entity => new AuditLogItem(entity.UtcTime, entity.UserGuid, entity.User == null ? null : entity.User.Name, entity.EventType, entity.SubjectType, entity.SubjectId, entity.Data))
-		                  .ToArrayAsync(cancellationToken);
+		                .ToArrayAsync(cancellationToken);
 	}
 }

Controller/Phantom.Controller.Services/ControllerServices.cs

@@ -0,0 +1,76 @@
+using Phantom.Common.Data.Agent;
+using Phantom.Common.Logging;
+using Phantom.Common.Messages.Agent;
+using Phantom.Common.Messages.Web;
+using Phantom.Controller.Database;
+using Phantom.Controller.Minecraft;
+using Phantom.Controller.Rpc;
+using Phantom.Controller.Services.Agents;
+using Phantom.Controller.Services.Audit;
+using Phantom.Controller.Services.Events;
+using Phantom.Controller.Services.Instances;
+using Phantom.Controller.Services.Rpc;
+using Phantom.Controller.Services.Users;
+using Phantom.Controller.Services.Users.Permissions;
+using Phantom.Controller.Services.Users.Roles;
+using Phantom.Utils.Tasks;
+
+namespace Phantom.Controller.Services; 
+
+public sealed class ControllerServices {
+	private TaskManager TaskManager { get; }
+	private MinecraftVersions MinecraftVersions { get; }
+
+	private AuditLog AuditLog { get; }
+
+	private AgentManager AgentManager { get; }
+	private AgentJavaRuntimesManager AgentJavaRuntimesManager { get; }
+	private EventLog EventLog { get; }
+	private InstanceManager InstanceManager { get; }
+	private InstanceLogManager InstanceLogManager { get; }
+	
+	private UserManager UserManager { get; }
+	private RoleManager RoleManager { get; }
+	private UserRoleManager UserRoleManager { get; }
+	private PermissionManager PermissionManager { get; }
+
+	private readonly IDatabaseProvider databaseProvider;
+	private readonly CancellationToken cancellationToken;
+	
+	public ControllerServices(IDatabaseProvider databaseProvider, AuthToken agentAuthToken, CancellationToken shutdownCancellationToken) {
+		this.TaskManager = new TaskManager(PhantomLogger.Create<TaskManager, ControllerServices>());
+		this.MinecraftVersions = new MinecraftVersions();
+		
+		this.AuditLog = new AuditLog(databaseProvider, TaskManager, shutdownCancellationToken);
+		
+		this.AgentManager = new AgentManager(agentAuthToken, databaseProvider, TaskManager, shutdownCancellationToken);
+		this.AgentJavaRuntimesManager = new AgentJavaRuntimesManager();
+		this.EventLog = new EventLog(databaseProvider, TaskManager, shutdownCancellationToken);
+		this.InstanceManager = new InstanceManager(AgentManager, MinecraftVersions, databaseProvider, shutdownCancellationToken);
+		this.InstanceLogManager = new InstanceLogManager();
+		
+		this.UserManager = new UserManager(databaseProvider, AuditLog);
+		this.RoleManager = new RoleManager(databaseProvider);
+		this.UserRoleManager = new UserRoleManager(databaseProvider);
+		this.PermissionManager = new PermissionManager(databaseProvider);
+		
+		this.databaseProvider = databaseProvider;
+		this.cancellationToken = shutdownCancellationToken;
+	}
+
+	public AgentMessageListener CreateAgentMessageListener(RpcClientConnection<IMessageToAgentListener> connection) {
+		return new AgentMessageListener(connection, AgentManager, AgentJavaRuntimesManager, InstanceManager, InstanceLogManager, EventLog, cancellationToken);
+	}
+
+	public WebMessageListener CreateWebMessageListener(RpcClientConnection<IMessageToWebListener> connection) {
+		return new WebMessageListener(connection, AuditLog, UserManager, RoleManager, UserRoleManager);
+	}
+
+	public async Task Initialize() {
+		await DatabaseMigrator.Run(databaseProvider, cancellationToken);
+		await PermissionManager.Initialize();
+		await RoleManager.Initialize();
+		await AgentManager.Initialize();
+		await InstanceManager.Initialize();
+	}
+}

Controller/Phantom.Controller.Services/Events/EventLog.cs

@@ -1,26 +1,28 @@
-using Microsoft.EntityFrameworkCore;
+using System.Collections.Immutable;
+using Microsoft.EntityFrameworkCore;
 using Phantom.Controller.Database;
 using Phantom.Controller.Database.Entities;
 using Phantom.Controller.Database.Enums;
+using Phantom.Utils.Collections;
 using Phantom.Utils.Tasks;
 
 namespace Phantom.Controller.Services.Events; 
 
 public sealed partial class EventLog {
-	private readonly CancellationToken cancellationToken;
+	private readonly IDatabaseProvider databaseProvider;
-	private readonly DatabaseProvider databaseProvider;
 	private readonly TaskManager taskManager;
+	private readonly CancellationToken cancellationToken;
 	
-	public EventLog(ServiceConfiguration serviceConfiguration, DatabaseProvider databaseProvider, TaskManager taskManager) {
+	public EventLog(IDatabaseProvider databaseProvider, TaskManager taskManager, CancellationToken cancellationToken) {
-		this.cancellationToken = serviceConfiguration.CancellationToken;
 		this.databaseProvider = databaseProvider;
 		this.taskManager = taskManager;
+		this.cancellationToken = cancellationToken;
 	}
 
 	private async Task AddEntityToDatabase(EventLogEntity logEntity) {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
-		scope.Ctx.EventLog.Add(logEntity);
+		ctx.EventLog.Add(logEntity);
-		await scope.Ctx.SaveChangesAsync(cancellationToken);
+		await ctx.SaveChangesAsync(cancellationToken);
 	}
 
 	private void AddItem(Guid eventGuid, DateTime utcTime, Guid? agentGuid, EventLogEventType eventType, string subjectId, Dictionary<string, object?>? extra = null) {
@@ -28,13 +30,14 @@ public sealed partial class EventLog {
 		taskManager.Run("Store event log item to database", () => AddEntityToDatabase(logEntity));
 	}
 
-	public async Task<EventLogItem[]> GetItems(int count, CancellationToken cancellationToken) {
+	public async Task<ImmutableArray<EventLogItem>> GetItems(int count, CancellationToken cancellationToken) {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
-		return await scope.Ctx.EventLog
+		return await ctx.EventLog
-		                  .AsQueryable()
+		                .AsQueryable()
-		                  .OrderByDescending(static entity => entity.UtcTime)
+		                .OrderByDescending(static entity => entity.UtcTime)
-		                  .Take(count)
+		                .Take(count)
-		                  .Select(static entity => new EventLogItem(entity.UtcTime, entity.AgentGuid, entity.EventType, entity.SubjectType, entity.SubjectId, entity.Data))
+		                .Select(static entity => new EventLogItem(entity.UtcTime, entity.AgentGuid, entity.EventType, entity.SubjectType, entity.SubjectId, entity.Data))
-		                  .ToArrayAsync(cancellationToken);
+		                .AsAsyncEnumerable()
+		                .ToImmutableArrayAsync(cancellationToken);
 	}
 }

Controller/Phantom.Controller.Services/Instances/InstanceManager.cs

@@ -5,8 +5,8 @@ using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Minecraft;
 using Phantom.Common.Data.Replies;
 using Phantom.Common.Logging;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.ToAgent;
+using Phantom.Common.Messages.Agent.ToAgent;
 using Phantom.Controller.Database;
 using Phantom.Controller.Database.Entities;
 using Phantom.Controller.Minecraft;
@@ -24,23 +24,23 @@ public sealed class InstanceManager {
 
 	public EventSubscribers<ImmutableDictionary<Guid, Instance>> InstancesChanged => instances.Subs;
 
-	private readonly CancellationToken cancellationToken;
 	private readonly AgentManager agentManager;
 	private readonly MinecraftVersions minecraftVersions;
-	private readonly DatabaseProvider databaseProvider;
+	private readonly IDatabaseProvider databaseProvider;
+	private readonly CancellationToken cancellationToken;
+	
 	private readonly SemaphoreSlim modifyInstancesSemaphore = new (1, 1);
 
-	public InstanceManager(ServiceConfiguration configuration, AgentManager agentManager, MinecraftVersions minecraftVersions, DatabaseProvider databaseProvider) {
+	public InstanceManager(AgentManager agentManager, MinecraftVersions minecraftVersions, IDatabaseProvider databaseProvider, CancellationToken cancellationToken) {
-		this.cancellationToken = configuration.CancellationToken;
 		this.agentManager = agentManager;
 		this.minecraftVersions = minecraftVersions;
 		this.databaseProvider = databaseProvider;
+		this.cancellationToken = cancellationToken;
 	}
 
 	public async Task Initialize() {
-		using var scope = databaseProvider.CreateScope();
+		await using var ctx = databaseProvider.Provide();
-
+		await foreach (var entity in ctx.Instances.AsAsyncEnumerable().WithCancellation(cancellationToken)) {
-		await foreach (var entity in scope.Ctx.Instances.AsAsyncEnumerable().WithCancellation(cancellationToken)) {
 			var configuration = new InstanceConfiguration(
 				entity.AgentGuid,
 				entity.InstanceGuid,
@@ -98,8 +98,8 @@ public sealed class InstanceManager {
 			});
 			
 			if (result.Is(AddOrEditInstanceResult.Success)) {
-				using var scope = databaseProvider.CreateScope();
+				await using var ctx = databaseProvider.Provide();
-				InstanceEntity entity = scope.Ctx.InstanceUpsert.Fetch(configuration.InstanceGuid);
+				InstanceEntity entity = ctx.InstanceUpsert.Fetch(configuration.InstanceGuid);
 
 				entity.AgentGuid = configuration.AgentGuid;
 				entity.InstanceName = configuration.InstanceName;
@@ -111,7 +111,7 @@ public sealed class InstanceManager {
 				entity.JavaRuntimeGuid = configuration.JavaRuntimeGuid;
 				entity.JvmArguments = JvmArgumentsHelper.Join(configuration.JvmArguments);
 
-				await scope.Ctx.SaveChangesAsync(cancellationToken);
+				await ctx.SaveChangesAsync(cancellationToken);
 			}
 			else if (isNewInstance) {
 				instances.ByGuid.Remove(configuration.InstanceGuid);
@@ -188,11 +188,11 @@ public sealed class InstanceManager {
 		try {
 			instances.ByGuid.TryReplace(instanceGuid, instance => instance with { LaunchAutomatically = shouldLaunchAutomatically });
 
-			using var scope = databaseProvider.CreateScope();
+			await using var ctx = databaseProvider.Provide();
-			var entity = await scope.Ctx.Instances.FindAsync(instanceGuid, cancellationToken);
+			var entity = await ctx.Instances.FindAsync(instanceGuid, cancellationToken);
 			if (entity != null) {
 				entity.LaunchAutomatically = shouldLaunchAutomatically;
-				await scope.Ctx.SaveChangesAsync(cancellationToken);
+				await ctx.SaveChangesAsync(cancellationToken);
 			}
 		} finally {
 			modifyInstancesSemaphore.Release();

Controller/Phantom.Controller.Services/Phantom.Controller.Services.csproj

@@ -1,4 +1,4 @@
-<Project Sdk="Microsoft.NET.Sdk.Web">
+<Project Sdk="Microsoft.NET.Sdk">
   
   <PropertyGroup>
     <ImplicitUsings>enable</ImplicitUsings>

Controller/Phantom.Controller.Services/Rpc/AgentMessageListener.cs

@@ -1,9 +1,9 @@
 using Phantom.Common.Data.Instance;
 using Phantom.Common.Data.Replies;
-using Phantom.Common.Messages;
+using Phantom.Common.Messages.Agent;
-using Phantom.Common.Messages.BiDirectional;
+using Phantom.Common.Messages.Agent.BiDirectional;
-using Phantom.Common.Messages.ToAgent;
+using Phantom.Common.Messages.Agent.ToAgent;
-using Phantom.Common.Messages.ToServer;
+using Phantom.Common.Messages.Agent.ToController;
 using Phantom.Controller.Rpc;
 using Phantom.Controller.Services.Agents;
 using Phantom.Controller.Services.Events;
@@ -13,27 +13,25 @@ using Phantom.Utils.Tasks;
 
 namespace Phantom.Controller.Services.Rpc;
 
-public sealed class MessageToServerListener : IMessageToServerListener {
+public sealed class AgentMessageListener : IMessageToControllerListener {
-	private readonly RpcClientConnection connection;
+	private readonly RpcClientConnection<IMessageToAgentListener> connection;
-	private readonly CancellationToken cancellationToken;
 	private readonly AgentManager agentManager;
 	private readonly AgentJavaRuntimesManager agentJavaRuntimesManager;
 	private readonly InstanceManager instanceManager;
 	private readonly InstanceLogManager instanceLogManager;
 	private readonly EventLog eventLog;
+	private readonly CancellationToken cancellationToken;
 
 	private readonly TaskCompletionSource<Guid> agentGuidWaiter = AsyncTasks.CreateCompletionSource<Guid>();
 
-	public bool IsDisposed { get; private set; }
+	internal AgentMessageListener(RpcClientConnection<IMessageToAgentListener> connection, AgentManager agentManager, AgentJavaRuntimesManager agentJavaRuntimesManager, InstanceManager instanceManager, InstanceLogManager instanceLogManager, EventLog eventLog, CancellationToken cancellationToken) {
-
-	internal MessageToServerListener(RpcClientConnection connection, ServiceConfiguration configuration, AgentManager agentManager, AgentJavaRuntimesManager agentJavaRuntimesManager, InstanceManager instanceManager, InstanceLogManager instanceLogManager, EventLog eventLog) {
 		this.connection = connection;
-		this.cancellationToken = configuration.CancellationToken;
 		this.agentManager = agentManager;
 		this.agentJavaRuntimesManager = agentJavaRuntimesManager;
 		this.instanceManager = instanceManager;
 		this.instanceLogManager = instanceLogManager;
 		this.eventLog = eventLog;
+		this.cancellationToken = cancellationToken;
 	}
 
 	public async Task<NoReply> HandleRegisterAgent(RegisterAgentMessage message) {
@@ -53,12 +51,11 @@ public sealed class MessageToServerListener : IMessageToServerListener {
 	}
 	
 	public Task<NoReply> HandleUnregisterAgent(UnregisterAgentMessage message) {
-		IsDisposed = true;
-		
 		if (agentManager.UnregisterAgent(message.AgentGuid, connection)) {
 			instanceManager.SetInstanceStatesForAgent(message.AgentGuid, InstanceStatus.Offline);
 		}
 
+		connection.Close();
 		return Task.FromResult(NoReply.Instance);
 	}
 

Controller/Phantom.Controller.Services/Rpc/MessageToServerListenerFactory.cs

@@ -1,28 +0,0 @@
-using Phantom.Controller.Rpc;
-using Phantom.Controller.Services.Agents;
-using Phantom.Controller.Services.Events;
-using Phantom.Controller.Services.Instances;
-
-namespace Phantom.Controller.Services.Rpc; 
-
-public sealed class MessageToServerListenerFactory {
-	private readonly ServiceConfiguration configuration;
-	private readonly AgentManager agentManager;
-	private readonly AgentJavaRuntimesManager agentJavaRuntimesManager;
-	private readonly InstanceManager instanceManager;
-	private readonly InstanceLogManager instanceLogManager;
-	private readonly EventLog eventLog;
-
-	public MessageToServerListenerFactory(ServiceConfiguration configuration, AgentManager agentManager, AgentJavaRuntimesManager agentJavaRuntimesManager, InstanceManager instanceManager, InstanceLogManager instanceLogManager, EventLog eventLog) {
-		this.configuration = configuration;
-		this.agentManager = agentManager;
-		this.agentJavaRuntimesManager = agentJavaRuntimesManager;
-		this.instanceManager = instanceManager;
-		this.instanceLogManager = instanceLogManager;
-		this.eventLog = eventLog;
-	}
-
-	public MessageToServerListener CreateListener(RpcClientConnection connection) {
-		return new MessageToServerListener(connection, configuration, agentManager, agentJavaRuntimesManager, instanceManager, instanceLogManager, eventLog);
-	}
-}

Controller/Phantom.Controller.Services/Rpc/WebMessageListener.cs

@@ -0,0 +1,67 @@
+using Phantom.Common.Messages.Web;
+using Phantom.Common.Messages.Web.BiDirectional;
+using Phantom.Common.Messages.Web.ToController;
+using Phantom.Controller.Database.Entities;
+using Phantom.Controller.Rpc;
+using Phantom.Controller.Services.Audit;
+using Phantom.Controller.Services.Users;
+using Phantom.Controller.Services.Users.Roles;
+using Phantom.Utils.Rpc.Message;
+using Phantom.Utils.Tasks;
+
+namespace Phantom.Controller.Services.Rpc; 
+
+public sealed class WebMessageListener : IMessageToControllerListener {
+	private readonly RpcClientConnection<IMessageToWebListener> connection;
+	private readonly AuditLog auditLog;
+	private readonly UserManager userManager;
+	private readonly RoleManager roleManager;
+	private readonly UserRoleManager userRoleManager;
+	
+	internal WebMessageListener(RpcClientConnection<IMessageToWebListener> connection, AuditLog auditLog, UserManager userManager, RoleManager roleManager, UserRoleManager userRoleManager) {
+		this.connection = connection;
+		this.auditLog = auditLog;
+		this.userManager = userManager;
+		this.roleManager = roleManager;
+		this.userRoleManager = userRoleManager;
+	}
+
+	public async Task<ICreateOrUpdateAdministratorUserResult> CreateOrUpdateAdministratorUser(CreateOrUpdateAdministratorUser message) {
+		UserEntity administratorUser = null!;
+		
+		var existingUser = await userManager.GetByName(message.Username);
+		if (existingUser == null) {
+			var result = await userManager.CreateUser(message.Username, message.Password);
+			switch (result) {
+				case Result<UserEntity, AddUserError>.Ok ok:
+					administratorUser = ok.Value;
+					await auditLog.AddAdministratorUserCreatedEvent(administratorUser);
+					break;
+				
+				case Result<UserEntity, AddUserError>.Fail fail:
+					return new ICreateOrUpdateAdministratorUserResult.CreationFailed(fail.Error);
+			}
+		}
+		else {
+			var result = await userManager.SetUserPassword(existingUser.UserGuid, message.Password);
+			if (result is Result<SetUserPasswordError>.Fail fail) {
+				return new ICreateOrUpdateAdministratorUserResult.UpdatingFailed(fail.Error);
+			}
+			else {
+				administratorUser = existingUser;
+				await auditLog.AddAdministratorUserModifiedEvent(administratorUser);
+			}
+		}
+		
+		var administratorRole = await roleManager.GetByGuid(Role.Administrator.Guid);
+		if (administratorRole == null || !await userRoleManager.Add(administratorUser, administratorRole)) {
+			return new ICreateOrUpdateAdministratorUserResult.AddingToRoleFailed();
+		}
+		
+		return new ICreateOrUpdateAdministratorUserResult.Success(administratorUser.ToUserInfo());
+	}
+
+	public Task<NoReply> HandleReply(ReplyMessage message) {
+		return Task.FromResult(NoReply.Instance);
+	}
+}

Controller/Phantom.Controller.Services/Users/Permissions/IdentityPermissions.cs

@@ -1,7 +1,6 @@
 using System.Collections.Immutable;
-using Phantom.Web.Identity.Data;
 
-namespace Phantom.Web.Identity.Authorization; 
+namespace Phantom.Controller.Services.Users.Permissions; 
 
 public sealed class IdentityPermissions {
 	internal static IdentityPermissions None { get; } = new ();

Controller/Phantom.Controller.Services/Users/Permissions/PermissionManager.cs

@@ -0,0 +1,68 @@
+using System.Collections.Immutable;
+using System.Security.Claims;
+using Microsoft.EntityFrameworkCore;
+using Phantom.Common.Logging;
+using Phantom.Controller.Database;
+using Phantom.Controller.Database.Entities;
+using Phantom.Utils.Collections;
+using Serilog;
+
+namespace Phantom.Controller.Services.Users.Permissions;
+
+public sealed class PermissionManager {
+	private static readonly ILogger Logger = PhantomLogger.Create<PermissionManager>();
+	
+	private readonly IDatabaseProvider databaseProvider;
+	private readonly Dictionary<Guid, IdentityPermissions> userIdsToPermissionIds = new ();
+
+	public PermissionManager(IDatabaseProvider databaseProvider) {
+		this.databaseProvider = databaseProvider;
+	}
+
+	internal async Task Initialize() {
+		Logger.Information("Adding default permissions to database.");
+		
+		await using var ctx = databaseProvider.Provide();
+		
+		var existingPermissionIds = await ctx.Permissions.Select(static p => p.Id).AsAsyncEnumerable().ToImmutableSetAsync();
+		var missingPermissionIds = GetMissingPermissionsOrdered(Permission.All, existingPermissionIds);
+		if (!missingPermissionIds.IsEmpty) {
+			Logger.Information("Adding default permissions: {Permissions}", string.Join(", ", missingPermissionIds));
+			
+			foreach (var permissionId in missingPermissionIds) {
+				ctx.Permissions.Add(new PermissionEntity(permissionId));
+			}
+			
+			await ctx.SaveChangesAsync();
+		}
+	}
+	
+	internal static ImmutableArray<string> GetMissingPermissionsOrdered(IEnumerable<Permission> allPermissions, ImmutableHashSet<string> existingPermissionIds) {
+		return allPermissions.Select(static permission => permission.Id).Except(existingPermissionIds).Order().ToImmutableArray();
+	}
+
+	private IdentityPermissions FetchPermissionsForUserId(Guid userId) {
+		using var ctx = databaseProvider.Provide();
+		var userPermissions = ctx.UserPermissions.Where(up => up.UserGuid == userId).Select(static up => up.PermissionId);
+		var rolePermissions = ctx.UserRoles.Where(ur => ur.UserGuid == userId).Join(ctx.RolePermissions, static ur => ur.RoleGuid, static rp => rp.RoleGuid, static (ur, rp) => rp.PermissionId);
+		return new IdentityPermissions(userPermissions.Union(rolePermissions));
+	}
+
+	private IdentityPermissions GetPermissionsForUserId(Guid userId, bool refreshCache) {
+		if (!refreshCache && userIdsToPermissionIds.TryGetValue(userId, out var userPermissions)) {
+			return userPermissions;
+		}
+		else {
+			return userIdsToPermissionIds[userId] = FetchPermissionsForUserId(userId);
+		}
+	}
+
+	public IdentityPermissions GetPermissions(ClaimsPrincipal user, bool refreshCache = false) {
+		Guid? userId = UserManager.GetAuthenticatedUserId(user);
+		return userId == null ? IdentityPermissions.None : GetPermissionsForUserId(userId.Value, refreshCache);
+	}
+
+	public bool CheckPermission(ClaimsPrincipal user, Permission permission, bool refreshCache = false) {
+		return GetPermissions(user, refreshCache).Check(permission);
+	}
+}

Controller/Phantom.Controller.Services/Users/RoleManager.cs

@@ -1,60 +0,0 @@
-using System.Collections.Immutable;
-using Microsoft.EntityFrameworkCore;
-using Phantom.Common.Logging;
-using Phantom.Controller.Database;
-using Phantom.Controller.Database.Entities;
-using Phantom.Utils.Collections;
-using Phantom.Utils.Tasks;
-using ILogger = Serilog.ILogger;
-
-namespace Phantom.Controller.Services.Users;
-
-public sealed class RoleManager {
-	private static readonly ILogger Logger = PhantomLogger.Create<RoleManager>();
-
-	private const int MaxRoleNameLength = 40;
-
-	private readonly ApplicationDbContext db;
-
-	public RoleManager(ApplicationDbContext db) {
-		this.db = db;
-	}
-
-	public Task<List<RoleEntity>> GetAll() {
-		return db.Roles.ToListAsync();
-	}
-
-	public Task<ImmutableHashSet<string>> GetAllNames() {
-		return db.Roles.Select(static role => role.Name).AsAsyncEnumerable().ToImmutableSetAsync();
-	}
-
-	public ValueTask<RoleEntity?> GetByGuid(Guid guid) {
-		return db.Roles.FindAsync(guid);
-	}
-
-	public async Task<Result<RoleEntity, AddRoleError>> Create(Guid guid, string name) {
-		if (string.IsNullOrWhiteSpace(name)) {
-			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameIsEmpty);
-		}
-		else if (name.Length > MaxRoleNameLength) {
-			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameIsTooLong);
-		}
-
-		try {
-			if (await db.Roles.AnyAsync(role => role.Name == name)) {
-				return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameAlreadyExists);
-			}
-
-			var role = new RoleEntity(guid, name);
-
-			db.Roles.Add(role);
-			await db.SaveChangesAsync();
-
-			Logger.Information("Created role \"{Name}\" (GUID {Guid}).", name, guid);
-			return Result.Ok<RoleEntity, AddRoleError>(role);
-		} catch (Exception e) {
-			Logger.Error(e, "Could not create role \"{Name}\" (GUID {Guid}).", name, guid);
-			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.UnknownError);
-		}
-	}
-}

Controller/Phantom.Controller.Services/Users/Roles/AddRoleError.cs

@@ -1,4 +1,4 @@
-namespace Phantom.Controller.Services.Users; 
+namespace Phantom.Controller.Services.Users.Roles; 
 
 public enum AddRoleError : byte {
 	NameIsEmpty,

Controller/Phantom.Controller.Services/Users/Roles/Role.cs

@@ -1,6 +1,6 @@
 using System.Collections.Immutable;
 
-namespace Phantom.Web.Identity.Data;
+namespace Phantom.Controller.Services.Users.Roles;
 
 public sealed record Role(Guid Guid, string Name, ImmutableArray<Permission> Permissions) {
 	private static readonly List<Role> AllRoles = new ();

Controller/Phantom.Controller.Services/Users/Roles/RoleManager.cs

@@ -0,0 +1,99 @@
+using System.Collections.Immutable;
+using Microsoft.EntityFrameworkCore;
+using Phantom.Common.Logging;
+using Phantom.Controller.Database;
+using Phantom.Controller.Database.Entities;
+using Phantom.Controller.Services.Users.Permissions;
+using Phantom.Utils.Collections;
+using Phantom.Utils.Tasks;
+using ILogger = Serilog.ILogger;
+
+namespace Phantom.Controller.Services.Users.Roles;
+
+public sealed class RoleManager {
+	private static readonly ILogger Logger = PhantomLogger.Create<RoleManager>();
+
+	private const int MaxRoleNameLength = 40;
+
+	private readonly IDatabaseProvider databaseProvider;
+
+	public RoleManager(IDatabaseProvider databaseProvider) {
+		this.databaseProvider = databaseProvider;
+	}
+
+	internal async Task Initialize() {
+		Logger.Information("Adding default roles to database.");
+		
+		await using var ctx = databaseProvider.Provide();
+
+		var existingRoleNames = await ctx.Roles
+		                                 .Select(static role => role.Name)
+		                                 .AsAsyncEnumerable()
+		                                 .ToImmutableSetAsync();
+		
+		var existingPermissionIdsByRoleGuid = await ctx.RolePermissions
+		                                               .GroupBy(static rp => rp.RoleGuid, static rp => rp.PermissionId)
+		                                               .ToDictionaryAsync(static g => g.Key, static g => g.ToImmutableHashSet());
+		
+		foreach (var role in Role.All) {
+			if (!existingRoleNames.Contains(role.Name)) {
+				Logger.Information("Adding default role \"{Name}\".", role.Name);
+				ctx.Roles.Add(new RoleEntity(role.Guid, role.Name));
+			}
+			
+			var existingPermissionIds = existingPermissionIdsByRoleGuid.TryGetValue(role.Guid, out var ids) ? ids : ImmutableHashSet<string>.Empty;
+			var missingPermissionIds = PermissionManager.GetMissingPermissionsOrdered(role.Permissions, existingPermissionIds);
+			if (!missingPermissionIds.IsEmpty) {
+				Logger.Information("Assigning default permission to role \"{Name}\": {Permissions}", role.Name, string.Join(", ", missingPermissionIds));
+				foreach (var permissionId in missingPermissionIds) {
+					ctx.RolePermissions.Add(new RolePermissionEntity(role.Guid, permissionId));
+				}
+			}
+		}
+		
+		await ctx.SaveChangesAsync();
+	}
+
+	public async Task<List<RoleEntity>> GetAll() {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Roles.ToListAsync();
+	}
+
+	public async Task<ImmutableHashSet<string>> GetAllNames() {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Roles.Select(static role => role.Name).AsAsyncEnumerable().ToImmutableSetAsync();
+	}
+
+	public async ValueTask<RoleEntity?> GetByGuid(Guid guid) {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Roles.FindAsync(guid);
+	}
+
+	public async Task<Result<RoleEntity, AddRoleError>> Create(string name) {
+		if (string.IsNullOrWhiteSpace(name)) {
+			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameIsEmpty);
+		}
+		else if (name.Length > MaxRoleNameLength) {
+			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameIsTooLong);
+		}
+
+		RoleEntity newRole;
+		try {
+			await using var ctx = databaseProvider.Provide();
+			
+			if (await ctx.Roles.AnyAsync(role => role.Name == name)) {
+				return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.NameAlreadyExists);
+			}
+				
+			newRole = new RoleEntity(Guid.NewGuid(), name);
+			ctx.Roles.Add(newRole);
+			await ctx.SaveChangesAsync();
+		} catch (Exception e) {
+			Logger.Error(e, "Could not create role \"{Name}\".", name);
+			return Result.Fail<RoleEntity, AddRoleError>(AddRoleError.UnknownError);
+		}
+
+		Logger.Information("Created role \"{Name}\" (GUID {Guid}).", name, newRole.RoleGuid);
+		return Result.Ok<RoleEntity, AddRoleError>(newRole);
+	}
+}

Controller/Phantom.Controller.Services/Users/Roles/UserRoleManager.cs

@@ -0,0 +1,87 @@
+using System.Collections.Immutable;
+using Microsoft.EntityFrameworkCore;
+using Phantom.Common.Logging;
+using Phantom.Controller.Database;
+using Phantom.Controller.Database.Entities;
+using Phantom.Utils.Collections;
+using Serilog;
+
+namespace Phantom.Controller.Services.Users.Roles;
+
+public sealed class UserRoleManager {
+	private static readonly ILogger Logger = PhantomLogger.Create<UserRoleManager>();
+
+	private readonly IDatabaseProvider databaseProvider;
+
+	public UserRoleManager(IDatabaseProvider databaseProvider) {
+		this.databaseProvider = databaseProvider;
+	}
+
+	public async Task<Dictionary<Guid, ImmutableArray<RoleEntity>>> GetAllByUserGuid() {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.UserRoles
+		                .Include(static ur => ur.Role)
+		                .GroupBy(static ur => ur.UserGuid, static ur => ur.Role)
+		                .ToDictionaryAsync(static group => group.Key, static group => group.ToImmutableArray());
+	}
+
+	public async Task<ImmutableArray<RoleEntity>> GetUserRoles(UserEntity user) {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.UserRoles
+		                .Include(static ur => ur.Role)
+		                .Where(ur => ur.UserGuid == user.UserGuid)
+		                .Select(static ur => ur.Role)
+		                .AsAsyncEnumerable()
+		                .ToImmutableArrayAsync();
+	}
+
+	public async Task<ImmutableHashSet<Guid>> GetUserRoleGuids(UserEntity user) {
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.UserRoles
+		                .Where(ur => ur.UserGuid == user.UserGuid)
+		                .Select(static ur => ur.RoleGuid)
+		                .AsAsyncEnumerable()
+		                .ToImmutableSetAsync();
+	}
+
+	public async Task<bool> Add(UserEntity user, RoleEntity role) {
+		try {
+			await using var ctx = databaseProvider.Provide();
+			
+			var userRole = await ctx.UserRoles.FindAsync(user.UserGuid, role.RoleGuid);
+			if (userRole != null) {
+				return true;
+			}
+			
+			userRole = new UserRoleEntity(user.UserGuid, role.RoleGuid);
+			ctx.UserRoles.Add(userRole);
+			await ctx.SaveChangesAsync();
+		} catch (Exception e) {
+			Logger.Error(e, "Could not add user \"{UserName}\" (GUID {UserGuid}) to role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
+			return false;
+		}
+
+		Logger.Information("Added user \"{UserName}\" (GUID {UserGuid}) to role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
+		return true;
+	}
+
+	public async Task<bool> Remove(UserEntity user, RoleEntity role) {
+		try {
+			await using var ctx = databaseProvider.Provide();
+			
+			var userRole = await ctx.UserRoles.FindAsync(user.UserGuid, role.RoleGuid);
+			if (userRole == null) {
+				return true;
+			}
+
+			ctx.UserRoles.Remove(userRole);
+			await ctx.SaveChangesAsync();
+		} catch (Exception e) {
+			Logger.Error(e, "Could not remove user \"{UserName}\" (GUID {UserGuid}) from role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
+			return false;
+		}
+
+		Logger.Information("Removed user \"{UserName}\" (GUID {UserGuid}) from role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
+		return true;
+	}
+}

Controller/Phantom.Controller.Services/Users/UserManager.cs

@@ -1,25 +1,26 @@
 using System.Collections.Immutable;
 using System.Security.Claims;
-using Microsoft.AspNetCore.Identity;
 using Microsoft.EntityFrameworkCore;
 using Phantom.Common.Logging;
 using Phantom.Controller.Database;
 using Phantom.Controller.Database.Entities;
+using Phantom.Controller.Services.Audit;
+using Phantom.Controller.Services.Users.Roles;
 using Phantom.Utils.Collections;
 using Phantom.Utils.Tasks;
-using ILogger = Serilog.ILogger;
+using Serilog;
 
 namespace Phantom.Controller.Services.Users;
 
-public sealed class UserManager {
+sealed class UserManager {
 	private static readonly ILogger Logger = PhantomLogger.Create<UserManager>();
 
-	private const int MaxUserNameLength = 40;
+	private readonly IDatabaseProvider databaseProvider;
+	private readonly AuditLog auditLog;
 
-	private readonly ApplicationDbContext db;
+	public UserManager(IDatabaseProvider databaseProvider, AuditLog auditLog) {
-
+		this.databaseProvider = databaseProvider;
-	public UserManager(ApplicationDbContext db) {
+		this.auditLog = auditLog;
-		this.db = db;
 	}
 
 	public static Guid? GetAuthenticatedUserId(ClaimsPrincipal user) {
@@ -35,29 +36,33 @@ public sealed class UserManager {
 		return Guid.TryParse(claim.Value, out var guid) ? guid : null;
 	}
 
-	public Task<ImmutableArray<UserEntity>> GetAll() {
+	public async Task<ImmutableArray<UserEntity>> GetAll() {
-		return db.Users.AsAsyncEnumerable().ToImmutableArrayAsync();
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Users.AsAsyncEnumerable().ToImmutableArrayAsync();
 	}
 
-	public Task<Dictionary<Guid, T>> GetAllByGuid<T>(Func<UserEntity, T> valueSelector, CancellationToken cancellationToken = default) {
+	public async Task<Dictionary<Guid, T>> GetAllByGuid<T>(Func<UserEntity, T> valueSelector, CancellationToken cancellationToken = default) {
-		return db.Users.ToDictionaryAsync(static user => user.UserGuid, valueSelector, cancellationToken);
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Users.ToDictionaryAsync(static user => user.UserGuid, valueSelector, cancellationToken);
 	}
 
-	public Task<UserEntity?> GetByName(string username) {
+	public async Task<UserEntity?> GetByName(string username) {
-		return db.Users.FirstOrDefaultAsync(user => user.Name == username);
+		await using var ctx = databaseProvider.Provide();
+		return await ctx.Users.FirstOrDefaultAsync(user => user.Name == username);
 	}
 
 	public async Task<UserEntity?> GetAuthenticated(string username, string password) {
-		var user = await db.Users.FirstOrDefaultAsync(user => user.Name == username);
+		await using var ctx = databaseProvider.Provide();
+		var user = await ctx.Users.FirstOrDefaultAsync(user => user.Name == username);
 		if (user == null) {
 			return null;
 		}
 
-		switch (UserPasswords.Verify(user, password)) {
+		switch (UserValidation.VerifyPassword(user, password)) {
 			case PasswordVerificationResult.SuccessRehashNeeded:
 				try {
-					UserPasswords.Set(user, password);
+					UserValidation.SetPassword(user, password);
-					await db.SaveChangesAsync();
+					await ctx.SaveChangesAsync();
 				} catch (Exception e) {
 					Logger.Warning(e, "Could not rehash password for \"{Username}\".", user.Name);
 				}
@@ -74,75 +79,149 @@ public sealed class UserManager {
 		throw new InvalidOperationException();
 	}
 
-	public async Task<Result<UserEntity, AddUserError>> CreateUser(string username, string password) {
+	public async Task<ICreateOrUpdateAdministratorUserResult> CreateAdministratorUser(string username, string password) {
-		if (string.IsNullOrWhiteSpace(username)) {
+		await using var editor = new Editor(databaseProvider);
-			return Result.Fail<UserEntity, AddUserError>(new AddUserError.NameIsEmpty());
+		
-		}
+		var createUserResult = await editor.CreateUser(username, password);
-		else if (username.Length > MaxUserNameLength) {
+		if (!createUserResult) {
-			return Result.Fail<UserEntity, AddUserError>(new AddUserError.NameIsTooLong(MaxUserNameLength));
+			return new ICreateOrUpdateAdministratorUserResult.CreationFailed(createUserResult.Error);
 		}
+		
+		UserEntity administratorUser = null!;
 
-		var requirementViolations = UserPasswords.CheckRequirements(password);
+		var existingUser = await userManager.GetByName(message.Username);
-		if (!requirementViolations.IsEmpty) {
+		if (existingUser == null) {
-			return Result.Fail<UserEntity, AddUserError>(new AddUserError.PasswordIsInvalid(requirementViolations));
+			var result = await userManager.CreateUser(message.Username, message.Password);
-		}
+			switch (result) {
+				case Result<UserEntity, AddUserError>.Ok ok:
+					administratorUser = ok.Value;
+					await auditLog.AddAdministratorUserCreatedEvent(administratorUser);
+					break;
 
-		try {
+				case Result<UserEntity, AddUserError>.Fail fail:
-			if (await db.Users.AnyAsync(user => user.Name == username)) {
+					return new ICreateOrUpdateAdministratorUserResult.CreationFailed(fail.Error);
-				return Result.Fail<UserEntity, AddUserError>(new AddUserError.NameAlreadyExists());
 			}
-
-			var guid = Guid.NewGuid();
-			var user = new UserEntity(guid, username);
-			UserPasswords.Set(user, password);
-
-			db.Users.Add(user);
-			await db.SaveChangesAsync();
-
-			Logger.Information("Created user \"{Name}\" (GUID {Guid}).", username, guid);
-			return Result.Ok<UserEntity, AddUserError>(user);
-		} catch (Exception e) {
-			Logger.Error(e, "Could not create user \"{Name}\".", username);
-			return Result.Fail<UserEntity, AddUserError>(new AddUserError.UnknownError());
 		}
+		else {
+			var result = await userManager.SetUserPassword(existingUser.UserGuid, message.Password);
+			if (result is Result<SetUserPasswordError>.Fail fail) {
+				return new ICreateOrUpdateAdministratorUserResult.UpdatingFailed(fail.Error);
+			}
+			else {
+				administratorUser = existingUser;
+				await auditLog.AddAdministratorUserModifiedEvent(administratorUser);
+			}
+		}
+
+		var administratorRole = await roleManager.GetByGuid(Role.Administrator.Guid);
+		if (administratorRole == null || !await userRoleManager.Add(administratorUser, administratorRole)) {
+			return new ICreateOrUpdateAdministratorUserResult.AddingToRoleFailed();
+		}
+
+		return new ICreateOrUpdateAdministratorUserResult.Success(administratorUser.ToUserInfo());
+	}
+
+	public async Task<Result<UserEntity, AddUserError>> CreateUser(string username, string password) {
+		await using var editor = new Editor(databaseProvider);
+		return await editor.CreateUser(username, password);
 	}
 
 	public async Task<Result<SetUserPasswordError>> SetUserPassword(Guid guid, string password) {
-		var user = await db.Users.FindAsync(guid);
+		UserEntity foundUser;
-		if (user == null) {
-			return Result.Fail<SetUserPasswordError>(new SetUserPasswordError.UserNotFound());
-		}
 
-		try {
+		await using (var ctx = databaseProvider.Provide()) {
-			var requirementViolations = UserPasswords.CheckRequirements(password);
+			var user = await ctx.Users.FindAsync(guid);
-			if (!requirementViolations.IsEmpty) {
+			if (user == null) {
-				return Result.Fail<SetUserPasswordError>(new SetUserPasswordError.PasswordIsInvalid(requirementViolations));
+				return new SetUserPasswordError.UserNotFound();
 			}
 
-			UserPasswords.Set(user, password);
+			foundUser = user;
-			await db.SaveChangesAsync();
+			try {
+				var requirementViolations = UserValidation.CheckPasswordRequirements(password);
+				if (!requirementViolations.IsEmpty) {
+					return new SetUserPasswordError.PasswordIsInvalid(requirementViolations);
+				}
 
-			Logger.Information("Changed password for user \"{Name}\" (GUID {Guid}).", user.Name, user.UserGuid);
+				UserValidation.SetPassword(user, password);
-			return Result.Ok<SetUserPasswordError>();
+				await ctx.SaveChangesAsync();
-		} catch (Exception e) {
+			} catch (Exception e) {
-			Logger.Error(e, "Could not change password for user \"{Name}\" (GUID {Guid}).", user.Name, user.UserGuid);
+				Logger.Error(e, "Could not change password for user \"{Name}\" (GUID {Guid}).", user.Name, user.UserGuid);
-			return Result.Fail<SetUserPasswordError>(new SetUserPasswordError.UnknownError());
+				return new SetUserPasswordError.UnknownError();
+			}
 		}
+
+		Logger.Information("Changed password for user \"{Name}\" (GUID {Guid}).", foundUser.Name, foundUser.UserGuid);
+		return Result.Ok<SetUserPasswordError>();
 	}
 
 	public async Task<DeleteUserResult> DeleteByGuid(Guid guid) {
-		var user = await db.Users.FindAsync(guid);
+		await using var editor = new Editor(databaseProvider);
-		if (user == null) {
+		return await editor.DeleteUserByGuid(guid);
-			return DeleteUserResult.NotFound;
+	}
+
+	private sealed class Editor : IAsyncDisposable {
+		public ApplicationDbContext Ctx => cachedContext ??= databaseProvider.Provide();
+
+		private readonly IDatabaseProvider databaseProvider;
+		private ApplicationDbContext? cachedContext;
+
+		public Editor(IDatabaseProvider databaseProvider) {
+			this.databaseProvider = databaseProvider;
 		}
 
-		try {
+		public ValueTask DisposeAsync() {
-			db.Users.Remove(user);
+			return cachedContext?.DisposeAsync() ?? ValueTask.CompletedTask;
-			await db.SaveChangesAsync();
+		}
-			return DeleteUserResult.Deleted;
+
-		} catch (Exception e) {
+		public Task<UserEntity?> GetByName(string username) {
-			Logger.Error(e, "Could not delete user \"{Name}\" (GUID {Guid}).", user.Name, user.UserGuid);
+			return Ctx.Users.FirstOrDefaultAsync(user => user.Name == username);
-			return DeleteUserResult.Failed;
+		}
+
+		public async Task<Result<UserEntity, AddUserError>> CreateUser(string username, string password) {
+			var usernameRequirementViolation = UserValidation.CheckUsernameRequirements(username);
+			if (usernameRequirementViolation != null) {
+				return new AddUserError.NameIsInvalid(usernameRequirementViolation);
+			}
+
+			var passwordRequirementViolations = UserValidation.CheckPasswordRequirements(password);
+			if (!passwordRequirementViolations.IsEmpty) {
+				return new AddUserError.PasswordIsInvalid(passwordRequirementViolations);
+			}
+
+			UserEntity newUser;
+			try {
+				if (await Ctx.Users.AnyAsync(user => user.Name == username)) {
+					return new AddUserError.NameAlreadyExists();
+				}
+
+				newUser = new UserEntity(Guid.NewGuid(), username);
+				UserValidation.SetPassword(newUser, password);
+
+				Ctx.Users.Add(newUser);
+				await Ctx.SaveChangesAsync();
+			} catch (Exception e) {
+				Logger.Error(e, "Could not create user \"{Name}\".", username);
+				return new AddUserError.UnknownError();
+			}
+
+			Logger.Information("Created user \"{Name}\" (GUID {Guid}).", username, newUser.UserGuid);
+			return newUser;
+		}
+
+		public async Task<DeleteUserResult> DeleteUserByGuid(Guid guid) {
+			var user = await Ctx.Users.FindAsync(guid);
+			if (user == null) {
+				return DeleteUserResult.NotFound;
+			}
+
+			try {
+				Ctx.Users.Remove(user);
+				await Ctx.SaveChangesAsync();
+				return DeleteUserResult.Deleted;
+			} catch (Exception e) {
+				Logger.Error(e, "Could not delete user \"{Name}\" (GUID {Guid}).", user.Name, user.UserGuid);
+				return DeleteUserResult.Failed;
+			}
 		}
 	}
 }

Controller/Phantom.Controller.Services/Users/UserRoleManager.cs

@@ -1,76 +0,0 @@
-using System.Collections.Immutable;
-using Microsoft.EntityFrameworkCore;
-using Phantom.Common.Logging;
-using Phantom.Controller.Database;
-using Phantom.Controller.Database.Entities;
-using Phantom.Utils.Collections;
-using ILogger = Serilog.ILogger;
-
-namespace Phantom.Controller.Services.Users;
-
-public sealed class UserRoleManager {
-	private static readonly ILogger Logger = PhantomLogger.Create<UserRoleManager>();
-
-	private readonly ApplicationDbContext db;
-
-	public UserRoleManager(ApplicationDbContext db) {
-		this.db = db;
-	}
-
-	public Task<Dictionary<Guid, ImmutableArray<RoleEntity>>> GetAllByUserGuid() {
-		return db.UserRoles
-		         .Include(static ur => ur.Role)
-		         .GroupBy(static ur => ur.UserGuid, static ur => ur.Role)
-		         .ToDictionaryAsync(static group => group.Key, static group => group.ToImmutableArray());
-	}
-
-	public Task<ImmutableArray<RoleEntity>> GetUserRoles(UserEntity user) {
-		return db.UserRoles
-		         .Include(static ur => ur.Role)
-		         .Where(ur => ur.UserGuid == user.UserGuid)
-		         .Select(static ur => ur.Role)
-		         .AsAsyncEnumerable()
-		         .ToImmutableArrayAsync();
-	}
-
-	public Task<ImmutableHashSet<Guid>> GetUserRoleGuids(UserEntity user) {
-		return db.UserRoles
-		         .Where(ur => ur.UserGuid == user.UserGuid)
-		         .Select(static ur => ur.RoleGuid)
-		         .AsAsyncEnumerable()
-		         .ToImmutableSetAsync();
-	}
-
-	public async Task<bool> Add(UserEntity user, RoleEntity role) {
-		try {
-			var userRole = await db.UserRoles.FindAsync(user.UserGuid, role.RoleGuid);
-			if (userRole == null) {
-				userRole = new UserRoleEntity(user.UserGuid, role.RoleGuid);
-				db.UserRoles.Add(userRole);
-				await db.SaveChangesAsync();
-			}
-
-			Logger.Information("Added user \"{UserName}\" (GUID {UserGuid}) to role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
-			return true;
-		} catch (Exception e) {
-			Logger.Error(e, "Could not add user \"{UserName}\" (GUID {UserGuid}) to role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
-			return false;
-		}
-	}
-
-	public async Task<bool> Remove(UserEntity user, RoleEntity role) {
-		try {
-			var userRole = await db.UserRoles.FindAsync(user.UserGuid, role.RoleGuid);
-			if (userRole != null) {
-				db.UserRoles.Remove(userRole);
-				await db.SaveChangesAsync();
-			}
-
-			Logger.Information("Removed user \"{UserName}\" (GUID {UserGuid}) from role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
-			return true;
-		} catch (Exception e) {
-			Logger.Error(e, "Could not remove user \"{UserName}\" (GUID {UserGuid}) from role \"{RoleName}\" (GUID {RoleGuid}).", user.Name, user.UserGuid, role.Name, role.RoleGuid);
-			return false;
-		}
-	}
-}

Controller/Phantom.Controller.Services/Users/UserValidation.cs

@@ -1,19 +1,31 @@
 using System.Collections.Immutable;
-using Microsoft.AspNetCore.Identity;
 using Phantom.Controller.Database.Entities;
 
 namespace Phantom.Controller.Services.Users;
 
-internal static class UserPasswords {
+static class UserValidation {
 	private static PasswordHasher<UserEntity> Hasher { get; } = new ();
 
-	private const int MinimumLength = 16;
+	private const int MaxUserNameLength = 40;
-	
+	private const int MinimumPasswordLength = 16;
-	public static ImmutableArray<PasswordRequirementViolation> CheckRequirements(string password) {
+
+	public static UsernameRequirementViolation? CheckUsernameRequirements(string username) {
+		if (string.IsNullOrWhiteSpace(username)) {
+			return new UsernameRequirementViolation.IsEmpty();
+		}
+		else if (username.Length > MaxUserNameLength) {
+			return new UsernameRequirementViolation.TooLong(MaxUserNameLength);
+		}
+		else {
+			return null;
+		}
+	}
+
+	public static ImmutableArray<PasswordRequirementViolation> CheckPasswordRequirements(string password) {
 		var violations = ImmutableArray.CreateBuilder<PasswordRequirementViolation>();
 		
-		if (password.Length < MinimumLength) {
+		if (password.Length < MinimumPasswordLength) {
-			violations.Add(new PasswordRequirementViolation.TooShort(MinimumLength));
+			violations.Add(new PasswordRequirementViolation.TooShort(MinimumPasswordLength));
 		}
 
 		if (!password.Any(char.IsLower)) {
@@ -31,11 +43,11 @@ internal static class UserPasswords {
 		return violations.ToImmutable();
 	}
 
-	public static void Set(UserEntity user, string password) {
+	public static void SetPassword(UserEntity user, string password) {
 		user.PasswordHash = Hasher.HashPassword(user, password);
 	}
-	
+
-	public static PasswordVerificationResult Verify(UserEntity user, string password) {
+	public static PasswordVerificationResult VerifyPassword(UserEntity user, string password) {
 		return Hasher.VerifyHashedPassword(user, user.PasswordHash, password);
 	}
 }

Controller/Phantom.Controller/CertificateFiles.cs

@@ -1,87 +0,0 @@
-using NetMQ;
-using Phantom.Common.Data.Agent;
-using Phantom.Common.Logging;
-using Phantom.Utils.Cryptography;
-using Phantom.Utils.IO;
-using Serilog;
-
-namespace Phantom.Controller;
-
-static class CertificateFiles {
-	private static ILogger Logger { get; } = PhantomLogger.Create(nameof(CertificateFiles));
-
-	private const string SecretKeyFileName = "secret.key";
-	private const string AgentKeyFileName = "agent.key";
-
-	public static async Task<(NetMQCertificate, AgentAuthToken)?> CreateOrLoad(string folderPath) {
-		string secretKeyFilePath = Path.Combine(folderPath, SecretKeyFileName);
-		string agentKeyFilePath = Path.Combine(folderPath, AgentKeyFileName);
-
-		bool secretKeyFileExists = File.Exists(secretKeyFilePath);
-		bool agentKeyFileExists = File.Exists(agentKeyFilePath);
-
-		if (secretKeyFileExists && agentKeyFileExists) {
-			try {
-				return await LoadCertificatesFromFiles(secretKeyFilePath, agentKeyFilePath);
-			} catch (IOException e) {
-				Logger.Fatal("Error reading certificate files.");
-				Logger.Fatal(e.Message);
-				return null;
-			} catch (Exception) {
-				Logger.Fatal("Certificate files contain invalid data.");
-				return null;
-			}
-		}
-
-		if (secretKeyFileExists || agentKeyFileExists) {
-			string existingKeyFilePath = secretKeyFileExists ? secretKeyFilePath : agentKeyFilePath;
-			string missingKeyFileName = secretKeyFileExists ? AgentKeyFileName : SecretKeyFileName;
-			Logger.Fatal("The certificate file {ExistingKeyFilePath} exists but {MissingKeyFileName} does not. Please delete it to regenerate both certificate files.", existingKeyFilePath, missingKeyFileName);
-			return null;
-		}
-
-		Logger.Information("Creating certificate files in: {FolderPath}", folderPath);
-		
-		try {
-			return await GenerateCertificateFiles(secretKeyFilePath, agentKeyFilePath);
-		} catch (Exception e) {
-			Logger.Fatal("Error creating certificate files.");
-			Logger.Fatal(e.Message);
-			return null;
-		}
-	}
-
-	private static async Task<(NetMQCertificate, AgentAuthToken)?> LoadCertificatesFromFiles(string secretKeyFilePath, string agentKeyFilePath) {
-		byte[] secretKey = await ReadCertificateFile(secretKeyFilePath);
-		byte[] agentKey = await ReadCertificateFile(agentKeyFilePath);
-
-		var (publicKey, agentToken) = AgentKeyData.FromBytes(agentKey);
-		var certificate = new NetMQCertificate(secretKey, publicKey);
-		
-		LogAgentConnectionInfo("Loaded existing certificate files.", agentKeyFilePath, agentKey);
-		return (certificate, agentToken);
-	}
-
-	private static Task<byte[]> ReadCertificateFile(string filePath) {
-		Files.RequireMaximumFileSize(filePath, 64);
-		return File.ReadAllBytesAsync(filePath);
-	}
-
-	private static async Task<(NetMQCertificate, AgentAuthToken)> GenerateCertificateFiles(string secretKeyFilePath, string agentKeyFilePath) {
-		var certificate = new NetMQCertificate();
-		var agentToken = AgentAuthToken.Generate();
-		var agentKey = AgentKeyData.ToBytes(certificate.PublicKey, agentToken);
-
-		await Files.WriteBytesAsync(secretKeyFilePath, certificate.SecretKey, FileMode.Create, Chmod.URW_GR);
-		await Files.WriteBytesAsync(agentKeyFilePath, agentKey, FileMode.Create, Chmod.URW_GR);
-
-		LogAgentConnectionInfo("Created new certificate files.", agentKeyFilePath, agentKey);
-		return (certificate, agentToken);
-	}
-
-	private static void LogAgentConnectionInfo(string message, string agentKeyFilePath, byte[] agentKey) {
-		Logger.Information(message + " Agents will need the agent key to connect.");
-		Logger.Information("Agent key file: {AgentKeyFilePath}", agentKeyFilePath);
-		Logger.Information("Agent key: {AgentKey}", TokenGenerator.EncodeBytes(agentKey));
-	}
-}