Migrate auth to Open.IdentityServer

- Implemented new search endpoints for rooms to accommodate the 2018 client.
- Added support for retrieving room details and featured rooms in a format compatible with the 2018 client.
- Introduced new data models for login responses and player presence specific to the 2018 client.
- Created mappers to convert between internal entities and the 2018 wire formats for players and rooms.
- Updated existing storefront APIs to include versioned endpoints for the 2018 client.
- Enhanced the version controller to return dual-format responses for compatibility with both 2018 and 2020 clients.
- Refactored the configuration service to ensure trailing slashes in URLs for the 2018 client.

Dockerfile

@@ -1,14 +1,14 @@
 # DorkNet.Server container image — Coolify deploy target.
 # ────────────────────────────────────────────────────────────────────
 # Multi-stage: SDK image builds + publishes, runtime image is the
-# slimmer aspnet:9.0 with only the published output.
+# slimmer aspnet:10.0 with only the published output.
 #
 # Build context: repo root (so Tools/ and DorkNet.Models/ are visible
 # to ProjectReference + dotnet restore). The .dockerignore at the
 # repo root keeps the bin/, obj/, and other dev junk out of the
 # context.
 
-ARG DOTNET_VERSION=9.0
+ARG DOTNET_VERSION=10.0
 ARG NODE_VERSION=20
 
 # ── admin SPA build stage ──────────────────────────────────────────
@@ -76,13 +76,13 @@ WORKDIR /app
 
 # curl + wget for healthcheck probes — Coolify v4 defaults to wget for
 # its own probe regardless of what the image's HEALTHCHECK uses, so
-# both have to be present. The aspnet:9.0 base image strips both by
+# both have to be present. The aspnet:10.0 base image strips both by
 # default to keep the surface area small.
 RUN apt-get update \
     && apt-get install -y --no-install-recommends curl wget \
     && rm -rf /var/lib/apt/lists/*
 
-# Run as a non-root user — aspnet:9.0 ships with the `app` UID 1654.
+# Run as a non-root user — aspnet:10.0 ships with the `app` UID 1654.
 # Coolify mounts persistent volumes with write permission for this UID.
 USER app
 

DorkNet.Models/Auth/Login2018.cs

@@ -0,0 +1,143 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Auth;
+
+// ── June-2018 (build 20180621_EA) login wire shapes ──────────────────────────
+//
+// The 2018 client speaks a DIFFERENT login protocol than the 2019/2020 OAuth
+// flow the rest of DorkNet implements:
+//   • POST api/platformlogin/v1/{loginaccount,logincached,createaccount}
+//   • request body is a JSON object (Unity JsonUtility / LitJson), NOT form
+//   • response is the "login envelope" below, read by RecNet.cs:40014-40021
+//     via case-sensitive LitJson keys.
+//
+// Keys verified from the assembly's REAL (name-preserved) Deserialize methods
+// via dnlib — the obfuscated-name sibling methods are Beebyte decoys with
+// scrambled literals (see project_2018_mono_obfuscation memory).
+
+/// <summary>
+/// Login response envelope. RecNet login-response Deserialize (RecNet.cs:40016-40020)
+/// reads: Error (req string), Player (optional object), Token (req string),
+/// FirstLoginOfTheDay (req bool), AnalyticsSessionId (req long). Empty Error
+/// means success; a non-empty Error is shown to the user and aborts login.
+/// </summary>
+public class Login2018Response
+{
+    [JsonPropertyName("Error")]
+    public string Error { get; set; } = string.Empty;
+
+    [JsonPropertyName("Player")]
+    public Player2018? Player { get; set; }
+
+    [JsonPropertyName("Token")]
+    public string Token { get; set; } = string.Empty;
+
+    [JsonPropertyName("FirstLoginOfTheDay")]
+    public bool FirstLoginOfTheDay { get; set; }
+
+    [JsonPropertyName("AnalyticsSessionId")]
+    public long AnalyticsSessionId { get; set; }
+}
+
+/// <summary>
+/// 2018 player object embedded in the login envelope and returned bare from
+/// getcachedlogins. Keys + required/optional verified from RecNet.cs:64632-64667
+/// (RecNet.EEBPLECPEGD.Deserialize):
+///   REQUIRED (Util.GetKey throws if missing): Id, Username, DisplayName, XP,
+///     Level, RegistrationStatus, Developer, CanReceiveInvites, ProfileImageName,
+///     JuniorProfile, ForceJuniorImages, PendingJunior, HasBirthday.
+///   OPTIONAL: Bio (TryGetKey), AvoidJuniors (ContainsKey-guarded),
+///     PlayerReputation/PlatformId (GetObjectKey -> null ok; omitted here),
+///     GroupMemberships (ContainsKey-guarded; omitted).
+/// NOTE the 2018 client uses "Id" (not "AccountId") and "Developer" (not
+/// "IsDeveloper") — distinct from the 2020 PlayerProfile DTO.
+/// </summary>
+public class Player2018
+{
+    [JsonPropertyName("Id")]
+    public long Id { get; set; }
+
+    [JsonPropertyName("Username")]
+    public string Username { get; set; } = string.Empty;
+
+    [JsonPropertyName("DisplayName")]
+    public string DisplayName { get; set; } = string.Empty;
+
+    [JsonPropertyName("Bio")]
+    public string Bio { get; set; } = string.Empty;
+
+    [JsonPropertyName("XP")]
+    public int XP { get; set; }
+
+    [JsonPropertyName("Level")]
+    public int Level { get; set; } = 1;
+
+    // Registration step enum (ProfileSelectionManager.NFCBDCFLBOC):
+    // invalid=-1, video=0, birthday=1, email=2, COMPLETE=10. Anything < 10
+    // makes the client run the signup step flow (it got "stuck on birthday").
+    // 10 = fully registered → client goes straight in-game.
+    [JsonPropertyName("RegistrationStatus")]
+    public int RegistrationStatus { get; set; } = 10;
+
+    [JsonPropertyName("Developer")]
+    public bool Developer { get; set; }
+
+    [JsonPropertyName("CanReceiveInvites")]
+    public bool CanReceiveInvites { get; set; } = true;
+
+    [JsonPropertyName("ProfileImageName")]
+    public string ProfileImageName { get; set; } = string.Empty;
+
+    [JsonPropertyName("JuniorProfile")]
+    public bool JuniorProfile { get; set; }
+
+    [JsonPropertyName("ForceJuniorImages")]
+    public bool ForceJuniorImages { get; set; }
+
+    [JsonPropertyName("PendingJunior")]
+    public bool PendingJunior { get; set; }
+
+    [JsonPropertyName("HasBirthday")]
+    public bool HasBirthday { get; set; }
+
+    [JsonPropertyName("AvoidJuniors")]
+    public bool AvoidJuniors { get; set; }
+
+    // REQUIRED to be non-null: the post-login analytics Identify dereferences
+    // localPlayer.PlayerReputation.<field> (RecNet.cs ~NECCOFKHCAA) — a null
+    // here NREs the boot coroutine and the client hangs on splash_screen.
+    [JsonPropertyName("PlayerReputation")]
+    public PlayerReputation2018 PlayerReputation { get; set; } = new();
+}
+
+/// <summary>
+/// 2018 PlayerReputation (RecNet.HOLNFPNKNGB.Deserialize) — all int. Keys exact
+/// incl. the "Noteriety" misspelling. Must be present (non-null) on the player.
+/// </summary>
+public class PlayerReputation2018
+{
+    [JsonPropertyName("Noteriety")] public int Noteriety { get; set; }
+    [JsonPropertyName("CheerGeneral")] public int CheerGeneral { get; set; }
+    [JsonPropertyName("CheerHelpful")] public int CheerHelpful { get; set; }
+    [JsonPropertyName("CheerGreatHost")] public int CheerGreatHost { get; set; }
+    [JsonPropertyName("CheerSportsman")] public int CheerSportsman { get; set; }
+    [JsonPropertyName("CheerCreative")] public int CheerCreative { get; set; }
+    [JsonPropertyName("CheerCredit")] public int CheerCredit { get; set; }
+    [JsonPropertyName("SubscriberCount")] public int SubscriberCount { get; set; }
+    [JsonPropertyName("SubscribedCount")] public int SubscribedCount { get; set; }
+    [JsonPropertyName("SelectedCheer")] public int SelectedCheer { get; set; }
+}
+
+/// <summary>
+/// Generic 2018 success envelope {Success, Message} (RecNet EFDOILDKBFK) used by
+/// registeraccount (email attach) and other simple POSTs. Note the key is
+/// "Message" (not "error").
+/// </summary>
+public class SuccessMessage2018
+{
+    [JsonPropertyName("Success")]
+    public bool Success { get; set; }
+
+    [JsonPropertyName("Message")]
+    public string Message { get; set; } = string.Empty;
+}

DorkNet.Models/Config/RecRoomConfig.cs

@@ -50,13 +50,34 @@ public class RecRoomConfig
     [JsonPropertyName("DailyObjectives")]
     public List<List<DailyObjective>> DailyObjectives { get; set; } = DailyObjective.DefaultSets();
 
-    [JsonPropertyName("ConfigTable")]
+    // 2018.06 client (RecNet.OPOHNGAOCCD.Deserialize, RecNet.cs:9062-9068) reads
+    // ConfigTable as an ARRAY of {Key,Value} objects, NOT a JSON object map:
+    //   foreach elem in dict["ConfigTable"]: table[elem["Key"]] = elem["Value"]
+    // The 2020 client read it as an object — but this branch targets 2018, so we
+    // emit the array form. Keep the settable Dictionary for existing call sites
+    // (ConfigService.GetConfig populates it) and project to the wire array.
+    [JsonIgnore]
     public Dictionary<string, string> ConfigTable { get; set; } = [];
 
+    [JsonPropertyName("ConfigTable")]
+    public List<ConfigTableEntry> ConfigTableWire =>
+        ConfigTable.Select(kv => new ConfigTableEntry { Key = kv.Key, Value = kv.Value }).ToList();
+
     [JsonPropertyName("ServiceUrls")]
     public Dictionary<string, string> ServiceUrls { get; set; } = [];
 }
 
+// 2018 ConfigTable element shape: {"Key": "...", "Value": "..."} (PascalCase,
+// LitJson Util.GetKey<string>("Key"/"Value")).
+public class ConfigTableEntry
+{
+    [JsonPropertyName("Key")]
+    public string Key { get; set; } = string.Empty;
+
+    [JsonPropertyName("Value")]
+    public string Value { get; set; } = string.Empty;
+}
+
 public class PhotonConfig
 {
     [JsonPropertyName("AppId")]
@@ -77,11 +98,17 @@ public class PhotonConfig
 
 public class MatchmakingParams
 {
-    [JsonPropertyName("MaxPlayersPerRoom")]
-    public int MaxPlayersPerRoom { get; set; } = 8;
+    // 2018 RecNet.LOIBFONMHMF.Deserialize reads exactly TWO required float keys
+    // via Util.GetKey<Single> (verified via dnlib). It's fetched as an optional
+    // object (GetObjectKey) inside config/v2, but once PRESENT the client
+    // deserializes it — wrong/missing keys throw KeyNotFoundException →
+    // "Received malformed RecNet response" → "Failed to connect to RecNet" at
+    // boot. The 2020 MaxPlayersPerRoom/MinPlayersToStart keys are NOT read here.
+    [JsonPropertyName("PreferFullRoomsFrequency")]
+    public float PreferFullRoomsFrequency { get; set; } = 0.5f;
 
-    [JsonPropertyName("MinPlayersToStart")]
-    public int MinPlayersToStart { get; set; } = 1;
+    [JsonPropertyName("PreferEmptyRoomsFrequency")]
+    public float PreferEmptyRoomsFrequency { get; set; } = 0.5f;
 }
 
 public class LevelProgressionEntry

DorkNet.Models/DorkNet.Models.csproj

@@ -1,7 +1,7 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <ImplicitUsings>enable</ImplicitUsings>
     <Nullable>enable</Nullable>
   </PropertyGroup>

DorkNet.Models/Players/Presence2018.cs

@@ -0,0 +1,21 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Players;
+
+/// <summary>
+/// June-2018 presence record returned from POST api/presence/v2/list.
+/// Keys verified from RecNet.DBHHFILLFLC.Deserialize: PlayerId (long),
+/// IsOnline (bool), GameSession (optional object — null when the player is
+/// online but not in a session; the client null-checks it).
+/// </summary>
+public class Presence2018
+{
+    [JsonPropertyName("PlayerId")]
+    public long PlayerId { get; set; }
+
+    [JsonPropertyName("IsOnline")]
+    public bool IsOnline { get; set; }
+
+    [JsonPropertyName("GameSession")]
+    public object? GameSession { get; set; }
+}

DorkNet.Models/Rooms/Room2018.cs

@@ -0,0 +1,48 @@
+using System.Text.Json.Serialization;
+
+namespace DorkNet.Models.Rooms;
+
+/// <summary>
+/// Flat June-2018 room object. The 2018 client (RecNet Room.Deserialize,
+/// RecNet.cs:78244) reads these keys directly off the room JSON — there is NO
+/// 2020-style RoomDetails/Scenes wrapper; DataBlobName + PersonalDetails are
+/// embedded right here. Required keys throw (Util.GetKey) if missing, so every
+/// field below must be present except the genuinely-optional ones noted.
+///
+/// Notes:
+///  • CreatorPlayerId is read as an int client-side; all account ids fit int.
+///  • Date keys are ISO-8601 (client DateTimeParse.ParseISO8601). Use real
+///    dates, never year-9999 (overflow — see WireDates).
+///  • ActivityLevelId parse failure is a non-fatal warning client-side, so ""
+///    is safe for non-activity rooms.
+///  • CoOwners/Hosts are int arrays (empty ok); PersonalDetails is an optional
+///    object (null ok).
+/// </summary>
+public class Room2018
+{
+    [JsonPropertyName("RoomId")] public long RoomId { get; set; }
+    [JsonPropertyName("Name")] public string Name { get; set; } = string.Empty;
+    [JsonPropertyName("Description")] public string Description { get; set; } = string.Empty;
+    [JsonPropertyName("CreatorPlayerId")] public long CreatorPlayerId { get; set; }
+    [JsonPropertyName("ImageName")] public string ImageName { get; set; } = string.Empty;
+    [JsonPropertyName("DataBlobName")] public string DataBlobName { get; set; } = string.Empty;
+    [JsonPropertyName("ActivityLevelId")] public string ActivityLevelId { get; set; } = string.Empty;
+    [JsonPropertyName("IsSandbox")] public bool IsSandbox { get; set; }
+    [JsonPropertyName("Instanced")] public bool Instanced { get; set; } = true;
+    [JsonPropertyName("MaxPlayers")] public int MaxPlayers { get; set; } = 20;
+    [JsonPropertyName("Accessibility")] public int Accessibility { get; set; } = 1;
+    [JsonPropertyName("AccessibilityLocked")] public bool AccessibilityLocked { get; set; }
+    [JsonPropertyName("VisitorCount")] public int VisitorCount { get; set; }
+    [JsonPropertyName("VisitCount")] public int VisitCount { get; set; }
+    [JsonPropertyName("CheerCount")] public int CheerCount { get; set; }
+    [JsonPropertyName("ReportCount")] public int ReportCount { get; set; }
+    [JsonPropertyName("State")] public int State { get; set; }
+    [JsonPropertyName("StateModifiedAt")] public DateTime StateModifiedAt { get; set; }
+    [JsonPropertyName("CreatedAt")] public DateTime CreatedAt { get; set; }
+    [JsonPropertyName("ModifiedAt")] public DateTime ModifiedAt { get; set; }
+    [JsonPropertyName("LastVisitedAt")] public DateTime LastVisitedAt { get; set; }
+    [JsonPropertyName("DataModifiedAt")] public DateTime DataModifiedAt { get; set; }
+    [JsonPropertyName("CoOwners")] public List<int> CoOwners { get; set; } = [];
+    [JsonPropertyName("Hosts")] public List<int> Hosts { get; set; } = [];
+    [JsonPropertyName("PersonalDetails")] public object? PersonalDetails { get; set; }
+}

DorkNet.Server/Auth/IdentityServerIntegration.cs

@@ -0,0 +1,590 @@
+using System.IdentityModel.Tokens.Jwt;
+using System.Security.Claims;
+using System.Security.Cryptography;
+using System.Security.Cryptography.X509Certificates;
+using System.Text;
+using Open.IdentityServer;
+using Open.IdentityServer.Models;
+using Open.IdentityServer.Services;
+using Open.IdentityServer.Validation;
+using Microsoft.AspNetCore.Http.Features;
+using Microsoft.EntityFrameworkCore;
+using Microsoft.Extensions.Primitives;
+using Microsoft.IdentityModel.Tokens;
+using DorkNet.Server.Data;
+using DorkNet.Server.Data.Entities;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Auth;
+
+public sealed class IdentityServerSigningKeyProvider
+{
+    private readonly string _legacySecret;
+
+    public IdentityServerSigningKeyProvider(IConfiguration config)
+    {
+        _legacySecret =
+            Environment.GetEnvironmentVariable("DORKNET_JWT_SECRET")
+            ?? Environment.GetEnvironmentVariable("RECNET_JWT_SECRET")
+            ?? config["Jwt:Secret"]
+            ?? throw new InvalidOperationException(
+                "JWT secret not configured. Set DORKNET_JWT_SECRET env var or Jwt:Secret in appsettings.Local.json.");
+
+        CertificatePath = ResolveCertificatePath(config);
+        var password = config["IdentityServer:SigningCertificatePassword"] ?? _legacySecret;
+        var certificateBase64 = config["IdentityServer:SigningCertificateBase64"];
+        if (!string.IsNullOrWhiteSpace(certificateBase64))
+        {
+            LoadedFromBase64 = true;
+            Certificate = LoadCertificateFromBase64(certificateBase64, password);
+        }
+        else
+        {
+            Certificate = LoadOrCreateCertificate(CertificatePath, password);
+        }
+        SigningKey = new X509SecurityKey(Certificate);
+        LegacyJwtKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(_legacySecret));
+    }
+
+    public string CertificatePath { get; }
+    public bool LoadedFromBase64 { get; }
+    public string CertificateSource => LoadedFromBase64
+        ? "IdentityServer:SigningCertificateBase64"
+        : CertificatePath;
+    public X509Certificate2 Certificate { get; }
+    public SecurityKey SigningKey { get; }
+    public SecurityKey LegacyJwtKey { get; }
+    public SecurityKey[] ValidationKeys => new[] { SigningKey, LegacyJwtKey };
+
+    private static string ResolveCertificatePath(IConfiguration config)
+    {
+        var path = config["IdentityServer:SigningCertificatePath"];
+        if (string.IsNullOrWhiteSpace(path))
+            path = Path.Combine(AppContext.BaseDirectory, "data", "identityserver-signing.pfx");
+        return path;
+    }
+
+    private static X509Certificate2 LoadCertificateFromBase64(string certificateBase64, string password)
+    {
+        var flags = X509KeyStorageFlags.UserKeySet | X509KeyStorageFlags.Exportable;
+        var compact = NormalizeCertificateBase64(certificateBase64);
+        byte[] bytes;
+        try
+        {
+            bytes = Convert.FromBase64String(compact);
+        }
+        catch (FormatException ex)
+        {
+            throw new InvalidOperationException(
+                "IdentityServer signing certificate base64 is invalid. " +
+                "Set IdentityServer__SigningCertificateBase64 to the PFX bytes encoded as base64, " +
+                "without a file path or shell assignment text.",
+                ex);
+        }
+        try
+        {
+            return new X509Certificate2(bytes, password, flags);
+        }
+        catch (CryptographicException ex)
+        {
+            if (TryLoadPemCertificate(bytes, password, flags, out var certificate))
+                return certificate;
+
+            throw new InvalidOperationException(
+                "IdentityServer signing certificate base64 decoded successfully, but it is not a valid PFX/PKCS#12 certificate. " +
+                "Set IdentityServer__SigningCertificateBase64 to the PFX bytes encoded as base64 and make sure " +
+                "IdentityServer__SigningCertificatePassword matches the PFX password.",
+                ex);
+        }
+    }
+
+    private static bool TryLoadPemCertificate(
+        byte[] bytes,
+        string password,
+        X509KeyStorageFlags flags,
+        out X509Certificate2 certificate)
+    {
+        certificate = null!;
+
+        string pem;
+        try
+        {
+            pem = Encoding.UTF8.GetString(bytes);
+        }
+        catch (DecoderFallbackException)
+        {
+            return false;
+        }
+
+        if (!pem.Contains("-----BEGIN", StringComparison.Ordinal))
+            return false;
+
+        try
+        {
+            using var pemCertificate = X509Certificate2.CreateFromPem(pem, pem);
+            if (!pemCertificate.HasPrivateKey)
+                return false;
+
+            var pfxBytes = pemCertificate.Export(X509ContentType.Pfx, password);
+            certificate = new X509Certificate2(pfxBytes, password, flags);
+            return true;
+        }
+        catch (CryptographicException)
+        {
+            return false;
+        }
+    }
+
+    private static string NormalizeCertificateBase64(string value)
+    {
+        var text = value.Trim().Trim('"', '\'');
+        var equals = text.IndexOf('=');
+        if (equals > 0)
+        {
+            var key = text[..equals].Trim();
+            if (key.Equals("IdentityServer__SigningCertificateBase64", StringComparison.OrdinalIgnoreCase) ||
+                key.Equals("IdentityServer:SigningCertificateBase64", StringComparison.OrdinalIgnoreCase))
+                text = text[(equals + 1)..].Trim().Trim('"', '\'');
+        }
+
+        if (text.StartsWith("data:", StringComparison.OrdinalIgnoreCase))
+        {
+            var comma = text.IndexOf(',');
+            if (comma >= 0)
+                text = text[(comma + 1)..];
+        }
+
+        if (text.StartsWith("base64:", StringComparison.OrdinalIgnoreCase))
+            text = text["base64:".Length..];
+
+        var compact = new string(text.Where(c => !char.IsWhiteSpace(c)).ToArray())
+            .Replace('-', '+')
+            .Replace('_', '/');
+        return (compact.Length % 4) switch
+        {
+            2 => compact + "==",
+            3 => compact + "=",
+            _ => compact,
+        };
+    }
+
+    private static X509Certificate2 LoadOrCreateCertificate(string path, string password)
+    {
+        var flags = X509KeyStorageFlags.UserKeySet | X509KeyStorageFlags.Exportable;
+        Directory.CreateDirectory(Path.GetDirectoryName(path)!);
+
+        if (File.Exists(path))
+            return new X509Certificate2(path, password, flags);
+
+        using var rsa = RSA.Create(2048);
+        var request = new CertificateRequest(
+            "CN=DorkNet IdentityServer Signing",
+            rsa,
+            HashAlgorithmName.SHA256,
+            RSASignaturePadding.Pkcs1);
+        request.CertificateExtensions.Add(
+            new X509KeyUsageExtension(X509KeyUsageFlags.DigitalSignature, critical: false));
+
+        using var created = request.CreateSelfSigned(
+            DateTimeOffset.UtcNow.AddDays(-1),
+            DateTimeOffset.UtcNow.AddYears(10));
+        var bytes = created.Export(X509ContentType.Pfx, password);
+        File.WriteAllBytes(path, bytes);
+        return new X509Certificate2(bytes, password, flags);
+    }
+}
+
+public static class RecRoomIdentityServerRegistration
+{
+    public static void AddRecRoomIdentityServer(
+        this IServiceCollection services,
+        IConfiguration config,
+        DomainConfig domain,
+        IdentityServerSigningKeyProvider signingKeyProvider)
+    {
+        services
+            .AddIdentityServer(options =>
+            {
+                options.IssuerUri = domain.AuthIssuer.TrimEnd('/');
+            })
+            .AddInMemoryIdentityResources(RecRoomIdentityServerConfig.IdentityResources)
+            .AddInMemoryApiScopes(RecRoomIdentityServerConfig.ApiScopes)
+            .AddInMemoryClients(RecRoomIdentityServerConfig.Clients)
+            .AddSigningCredential(signingKeyProvider.SigningKey, SecurityAlgorithms.RsaSha256)
+            .AddResourceOwnerValidator<RecRoomPasswordValidator>()
+            .AddExtensionGrantValidator<CachedLoginGrantValidator>()
+            .AddProfileService<RecRoomProfileService>();
+    }
+}
+
+internal static class RecRoomIdentityServerConfig
+{
+    public const string ClientId = "recroom";
+    public const string ClientSecret = "VxZ53kgbbEaRoZAeMe00MagtgD12GLL2";
+    public const string GameClientScope = "gameClient";
+    public const string CachedLoginGrantType = "cached_login";
+
+    public static readonly IdentityResource[] IdentityResources =
+    {
+        new IdentityResources.OpenId(),
+        new IdentityResources.Profile(),
+    };
+
+    public static readonly ApiScope[] ApiScopes =
+    {
+        new(GameClientScope, "Game client")
+        {
+            UserClaims = RecRoomIdentityClaims.UserClaimTypes,
+        },
+        new("api", "DorkNet API")
+        {
+            UserClaims = RecRoomIdentityClaims.UserClaimTypes,
+        },
+    };
+
+    public static readonly Client[] Clients =
+    {
+        new()
+        {
+            ClientId = ClientId,
+            ClientName = "Rec Room game client",
+            RequireClientSecret = true,
+            ClientSecrets = { new Secret(ClientSecret.Sha256()) },
+            AllowedGrantTypes = { GrantType.ResourceOwnerPassword, "refresh_token", CachedLoginGrantType },
+            AllowedScopes = RecRoomScopes(),
+            AllowOfflineAccess = true,
+            AccessTokenLifetime = 60 * 60 * 12,
+            AbsoluteRefreshTokenLifetime = 60 * 60 * 24 * 30,
+            SlidingRefreshTokenLifetime = 60 * 60 * 24 * 30,
+            RefreshTokenUsage = TokenUsage.ReUse,
+            RefreshTokenExpiration = TokenExpiration.Absolute,
+            UpdateAccessTokenClaimsOnRefresh = true,
+            AlwaysIncludeUserClaimsInIdToken = true,
+        },
+    };
+
+    private static ICollection<string> RecRoomScopes() =>
+    [
+        IdentityServerConstants.StandardScopes.OpenId,
+        IdentityServerConstants.StandardScopes.Profile,
+        IdentityServerConstants.StandardScopes.OfflineAccess,
+        GameClientScope,
+        "api",
+    ];
+}
+
+public sealed class IdentityServerGameTokenRequestMiddleware(RequestDelegate next)
+{
+    public async Task InvokeAsync(HttpContext context)
+    {
+        if (!IsTokenRequest(context))
+        {
+            await next(context);
+            return;
+        }
+
+        var form = await context.Request.ReadFormAsync();
+        var values = form.ToDictionary(
+            kvp => kvp.Key,
+            kvp => kvp.Value,
+            StringComparer.OrdinalIgnoreCase);
+        var changed = false;
+
+        if (IsDevicePasswordGrant(values))
+        {
+            if (!values.ContainsKey("username") || string.IsNullOrWhiteSpace(values["username"].ToString()))
+            {
+                values["username"] = First(
+                    values.TryGetValue("deviceId", out var deviceId) ? deviceId.ToString() : null,
+                    values.TryGetValue("device_id", out var deviceIdSnake) ? deviceIdSnake.ToString() : null,
+                    values.TryGetValue("platformId", out var platformId) ? platformId.ToString() : null,
+                    values.TryGetValue("platform_id", out var platformIdSnake) ? platformIdSnake.ToString() : null,
+                    "anonymous");
+                changed = true;
+            }
+
+            if (!values.ContainsKey("password") || string.IsNullOrWhiteSpace(values["password"].ToString()))
+            {
+                values["password"] = "__dorknet_device_login__";
+                values["dorknet_device_login"] = "true";
+                changed = true;
+            }
+        }
+
+        var scopes = values.TryGetValue("scope", out var rawScope)
+            ? rawScope.ToString()
+            : string.Empty;
+        var mergedScopes = MergeScopes(scopes);
+        if (!string.Equals(scopes, mergedScopes, StringComparison.Ordinal))
+        {
+            values["scope"] = mergedScopes;
+            changed = true;
+        }
+
+        if (changed)
+            context.Features.Set<IFormFeature>(new FormFeature(new FormCollection(values)));
+
+        await next(context);
+    }
+
+    private static bool IsTokenRequest(HttpContext context) =>
+        HttpMethods.IsPost(context.Request.Method)
+        && context.Request.Path.Equals("/connect/token", StringComparison.OrdinalIgnoreCase)
+        && context.Request.HasFormContentType;
+
+    private static bool IsDevicePasswordGrant(Dictionary<string, StringValues> values)
+    {
+        if (!values.TryGetValue("grant_type", out var grantType) ||
+            !string.Equals(grantType.ToString(), GrantType.ResourceOwnerPassword, StringComparison.OrdinalIgnoreCase))
+            return false;
+        return !values.TryGetValue("password", out var password) ||
+               string.IsNullOrWhiteSpace(password.ToString());
+    }
+
+    private static string First(params string?[] values) =>
+        values.FirstOrDefault(v => !string.IsNullOrWhiteSpace(v)) ?? "anonymous";
+
+    private static string MergeScopes(string existing)
+    {
+        var scopes = existing
+            .Split(' ', StringSplitOptions.RemoveEmptyEntries | StringSplitOptions.TrimEntries)
+            .ToHashSet(StringComparer.OrdinalIgnoreCase);
+        scopes.Add(IdentityServerConstants.StandardScopes.OpenId);
+        scopes.Add(IdentityServerConstants.StandardScopes.Profile);
+        scopes.Add(IdentityServerConstants.StandardScopes.OfflineAccess);
+        scopes.Add(RecRoomIdentityServerConfig.GameClientScope);
+        return string.Join(' ', scopes);
+    }
+}
+
+public sealed class RecRoomPasswordValidator(
+    PlayerService playerService,
+    LevelService level,
+    ServerSettingsService settings,
+    DorkNetDbContext db,
+    ILogger<RecRoomPasswordValidator> logger) : IResourceOwnerPasswordValidator
+{
+    public async Task ValidateAsync(ResourceOwnerPasswordValidationContext context)
+    {
+        var raw = context.Request.Raw;
+        var deviceId = First(raw.Get("deviceId"), raw.Get("device_id"));
+        var platformId = First(raw.Get("platformId"), raw.Get("platform_id"));
+        var platform = int.TryParse(raw.Get("platform"), out var p) ? p : 0;
+        var deviceLogin = string.Equals(raw.Get("dorknet_device_login"), "true", StringComparison.OrdinalIgnoreCase);
+
+        if (!deviceLogin && !string.IsNullOrEmpty(context.Password) && !string.IsNullOrEmpty(context.UserName))
+        {
+            var byName = await playerService.GetByUsernameAsync(context.UserName);
+            if (byName is null || byName.PasswordHash is null)
+            {
+                context.Result = new GrantValidationResult(
+                    TokenRequestErrors.InvalidGrant,
+                    "unknown_user_or_no_password");
+                return;
+            }
+
+            if (!BCrypt.Net.BCrypt.Verify(context.Password, byName.PasswordHash))
+            {
+                context.Result = new GrantValidationResult(
+                    TokenRequestErrors.InvalidGrant,
+                    "password_mismatch");
+                return;
+            }
+
+            await playerService.TagPlatformAsync(byName.Id, platform, platformId);
+            await TryAwardLoginXpAsync(byName.Id);
+            context.Result = await CreateSuccessAsync(byName, "password");
+            return;
+        }
+
+        var effectiveDeviceId = !string.IsNullOrWhiteSpace(deviceId)
+            ? deviceId
+            : $"legacy-{(context.UserName ?? "anonymous").ToLowerInvariant()}";
+
+        if (await settings.AreSignupsDisabledAsync())
+        {
+            var existing = await playerService.GetByDeviceAsync(effectiveDeviceId);
+            if (existing is null)
+            {
+                logger.LogInformation(
+                    "[auth] IdentityServer password grant device fallback refused - signups disabled (device={Device})",
+                    effectiveDeviceId);
+                context.Result = new GrantValidationResult(
+                    TokenRequestErrors.InvalidGrant,
+                    "signups_disabled");
+                return;
+            }
+        }
+
+        var player = await playerService.GetOrCreateByDeviceAsync(
+            deviceId: effectiveDeviceId,
+            platform: platform,
+            platformId: platformId,
+            displayName: context.UserName);
+        await TryAwardLoginXpAsync(player.Id);
+        context.Result = await CreateSuccessAsync(player, "device_password");
+    }
+
+    private async Task<GrantValidationResult> CreateSuccessAsync(PlayerEntity player, string authMethod) =>
+        new(
+            subject: player.Id.ToString(),
+            authenticationMethod: authMethod,
+            claims: await RecRoomIdentityClaims.CreateAsync(db, player.Id, player.Username));
+
+    private async Task TryAwardLoginXpAsync(long playerId)
+    {
+        var lastSeen = await db.Players
+            .Where(p => p.Id == playerId)
+            .Select(p => p.LastSeenAt)
+            .FirstOrDefaultAsync();
+        if (lastSeen.Date < DateTime.UtcNow.Date)
+            await level.AwardXpAsync(playerId, LevelService.FirstLoginXp, "first_login_today");
+    }
+
+    private static string? First(params string?[] values) =>
+        values.FirstOrDefault(v => !string.IsNullOrWhiteSpace(v));
+}
+
+public sealed class CachedLoginGrantValidator(
+    PlayerService playerService,
+    LevelService level,
+    OrphanAccountTracker orphans,
+    DorkNetDbContext db,
+    ILogger<CachedLoginGrantValidator> logger) : IExtensionGrantValidator
+{
+    public string GrantType => RecRoomIdentityServerConfig.CachedLoginGrantType;
+
+    public async Task ValidateAsync(ExtensionGrantValidationContext context)
+    {
+        var raw = context.Request.Raw;
+        if (!long.TryParse(raw.Get("account_id"), out var pickedId))
+        {
+            context.Result = new GrantValidationResult(
+                TokenRequestErrors.InvalidGrant,
+                "missing account_id");
+            return;
+        }
+
+        var picked = await playerService.GetByIdAsync(pickedId);
+        if (picked is null)
+        {
+            context.Result = new GrantValidationResult(
+                TokenRequestErrors.InvalidGrant,
+                "unknown account_id");
+            return;
+        }
+
+        var deviceId = First(raw.Get("deviceId"), raw.Get("device_id"));
+        var platformId = First(raw.Get("platformId"), raw.Get("platform_id"));
+        var platform = int.TryParse(raw.Get("platform"), out var p) ? p : 0;
+
+        var pendingId = orphans.PeekPending(deviceId, platformId);
+        if (pendingId is long orphanId && orphanId != pickedId)
+        {
+            await playerService.DeleteOrphanAsync(orphanId);
+            logger.LogInformation(
+                "[orphan-cleanup] cached_login picked {PickedId}; deleted just-created {OrphanId}",
+                pickedId,
+                orphanId);
+        }
+        orphans.Clear(deviceId, platformId);
+
+        await TryAwardLoginXpAsync(picked.Id);
+        await playerService.TagPlatformAsync(picked.Id, platform, platformId);
+        context.Result = new GrantValidationResult(
+            subject: picked.Id.ToString(),
+            authenticationMethod: GrantType,
+            claims: await RecRoomIdentityClaims.CreateAsync(db, picked.Id, picked.Username));
+    }
+
+    private async Task TryAwardLoginXpAsync(long playerId)
+    {
+        var lastSeen = await db.Players
+            .Where(p => p.Id == playerId)
+            .Select(p => p.LastSeenAt)
+            .FirstOrDefaultAsync();
+        if (lastSeen.Date < DateTime.UtcNow.Date)
+            await level.AwardXpAsync(playerId, LevelService.FirstLoginXp, "first_login_today");
+    }
+
+    private static string? First(params string?[] values) =>
+        values.FirstOrDefault(v => !string.IsNullOrWhiteSpace(v));
+}
+
+public sealed class RecRoomProfileService(PlayerService playerService, DorkNetDbContext db) : IProfileService
+{
+    public async Task GetProfileDataAsync(ProfileDataRequestContext context)
+    {
+        if (!TryGetSubjectId(context.Subject, out var playerId))
+            return;
+
+        var player = await playerService.GetByIdAsync(playerId);
+        if (player is null)
+            return;
+
+        context.IssuedClaims.AddRange(
+            await RecRoomIdentityClaims.CreateAsync(db, player.Id, player.Username));
+    }
+
+    public async Task IsActiveAsync(IsActiveContext context)
+    {
+        context.IsActive =
+            TryGetSubjectId(context.Subject, out var playerId)
+            && await playerService.GetByIdAsync(playerId) is not null;
+    }
+
+    private static bool TryGetSubjectId(ClaimsPrincipal subject, out long playerId)
+    {
+        var value = subject.FindFirstValue(JwtRegisteredClaimNames.Sub)
+            ?? subject.FindFirstValue(ClaimTypes.NameIdentifier);
+        return long.TryParse(value, out playerId);
+    }
+}
+
+public static class RecRoomIdentityClaims
+{
+    public static readonly List<string> UserClaimTypes =
+    [
+        JwtRegisteredClaimNames.Sub,
+        ClaimTypes.NameIdentifier,
+        "name",
+        "role",
+        ClaimTypes.Role,
+        "roles",
+        "accountId",
+        "account_id",
+        "accountid",
+    ];
+
+    public static async Task<List<Claim>> CreateAsync(DorkNetDbContext db, long playerId, string? username = null)
+    {
+        var playerInfo = await db.Players
+            .Where(p => p.Id == playerId)
+            .Select(p => new { p.Username, IsDev = p.IsDeveloper || p.IsAdmin })
+            .FirstOrDefaultAsync();
+        var name = username ?? playerInfo?.Username ?? playerId.ToString();
+        var isDev = playerInfo?.IsDev ?? false;
+
+        var claims = new List<Claim>
+        {
+            new(ClaimTypes.NameIdentifier, playerId.ToString()),
+            new(JwtRegisteredClaimNames.Sub, playerId.ToString()),
+            new("name", name),
+            new("accountId", playerId.ToString()),
+            new("account_id", playerId.ToString()),
+            new("accountid", playerId.ToString()),
+            new(ClaimTypes.Role, "gameClient"),
+            new("role", "gameClient"),
+            new("roles", "gameClient"),
+        };
+
+        if (isDev)
+        {
+            claims.Add(new Claim(ClaimTypes.Role, "developer"));
+            claims.Add(new Claim("role", "developer"));
+            claims.Add(new Claim("roles", "developer"));
+        }
+
+        return claims;
+    }
+}

DorkNet.Server/Compat2018/Player2018Mapper.cs

@@ -0,0 +1,31 @@
+using DorkNet.Models.Auth;
+using DorkNet.Server.Data.Entities;
+
+namespace DorkNet.Server.Compat2018;
+
+/// <summary>
+/// Maps a <see cref="PlayerEntity"/> to the June-2018 wire player object
+/// (<see cref="Player2018"/>). Lives in the server (not DorkNet.Models) because
+/// the DTO project can't reference the data-layer entity. Shared by the
+/// platformlogin/v1, players/v1, and presence controllers so the 2018 player
+/// shape is produced in exactly one place.
+/// Keys verified against RecNet.EEBPLECPEGD.Deserialize (RecNet.cs:64632).
+/// </summary>
+public static class Player2018Mapper
+{
+    public static Player2018 From(PlayerEntity p) => new()
+    {
+        Id = p.Id,
+        Username = p.Username,
+        DisplayName = string.IsNullOrEmpty(p.DisplayName) ? p.Username : p.DisplayName,
+        Bio = p.Bio ?? string.Empty,
+        XP = p.XP,
+        Level = p.Level,
+        Developer = p.IsDeveloper,
+        CanReceiveInvites = p.CanReceiveInvites,
+        ProfileImageName = p.ProfileImageName ?? string.Empty,
+        JuniorProfile = p.IsJunior,
+        HasBirthday = p.Birthday.HasValue,
+        PlayerReputation = new PlayerReputation2018 { Noteriety = p.Reputation },
+    };
+}

DorkNet.Server/Compat2018/Room2018Mapper.cs

@@ -0,0 +1,43 @@
+using DorkNet.Models.Rooms;
+using DorkNet.Server.Data.Entities;
+
+namespace DorkNet.Server.Compat2018;
+
+/// <summary>
+/// Maps a <see cref="RoomEntity"/> to the flat June-2018 wire room
+/// (<see cref="Room2018"/>). Server-side because DorkNet.Models can't reference
+/// the data entity. Some 2018 fields have no column (Instanced, MaxPlayers,
+/// ReportCount, ActivityLevelId) and get sensible defaults; IsSandbox is derived
+/// from IsAGRoom (official AG rooms are not sandbox/maker rooms).
+/// </summary>
+public static class Room2018Mapper
+{
+    public static Room2018 From(RoomEntity r) => new()
+    {
+        RoomId = r.Id,
+        Name = r.Name,
+        Description = r.Description,
+        CreatorPlayerId = r.CreatorPlayerId,
+        ImageName = r.ImageName,
+        DataBlobName = r.CurrentDataBlobName ?? string.Empty,
+        ActivityLevelId = string.Empty,
+        IsSandbox = !r.IsAGRoom,
+        Instanced = true,
+        MaxPlayers = 20,
+        Accessibility = r.Accessibility,
+        AccessibilityLocked = false,
+        VisitorCount = r.VisitorCount,
+        VisitCount = r.VisitCount,
+        CheerCount = r.CheerCount,
+        ReportCount = 0,
+        State = r.State,
+        StateModifiedAt = r.UpdatedAt,
+        CreatedAt = r.CreatedAt,
+        ModifiedAt = r.UpdatedAt,
+        LastVisitedAt = r.UpdatedAt,
+        DataModifiedAt = r.UpdatedAt,
+        CoOwners = [],
+        Hosts = [],
+        PersonalDetails = null,
+    };
+}

DorkNet.Server/Controllers/API/Avatar/V3/AvatarSavedOutfitsController.cs

@@ -26,6 +26,7 @@ public class AvatarSavedOutfitsController(DorkNetDbContext db) : ControllerBase
 {
     private const int MaxSlots = 20;
 
+    [HttpGet("api/avatar/v1/saved")]
     [HttpGet("api/avatar/v2/saved")]
     [HttpGet("api/avatar/v3/saved")]
     [HttpGet("api/avatar/v4/saved")]
@@ -39,6 +40,7 @@ public class AvatarSavedOutfitsController(DorkNetDbContext db) : ControllerBase
 
     /// <summary>POST <c>v3/saved/set</c> — upsert one outfit by Slot.
     /// Body is the SavedOutfit shape directly.</summary>
+    [HttpPost("api/avatar/v1/saved/set")]
     [HttpPost("api/avatar/v3/saved/set")]
     [HttpPost("api/avatar/v2/saved/set")]
     public async Task<IActionResult> Set([FromBody] SavedOutfitDto body)

DorkNet.Server/Controllers/API/Images/ImagesController.cs

@@ -68,6 +68,13 @@ public class ImagesController(
     [HttpPost("api/images/v3/uploadsaved")]
     [HttpPost("api/images/v4/uploadsaved")]
     [HttpPost("api/images/v5/uploadsaved")]
+    // 2018 flat-screen (non-VR) camera save posts a single 'image' part to
+    // uploadsavedsingle (RecNet.cs:35080); ReadImageBytesAsync already falls
+    // back to the first uploaded file, so the same handler serves it.
+    [HttpPost("api/images/v2/uploadsavedsingle")]
+    [HttpPost("api/images/v3/uploadsavedsingle")]
+    [HttpPost("api/images/v4/uploadsavedsingle")]
+    [HttpPost("api/images/v5/uploadsavedsingle")]
     [Authorize]
     public async Task<IActionResult> UploadSaved()
     {

DorkNet.Server/Controllers/API/Inventory/InventoryController.cs

@@ -71,27 +71,37 @@ public class InventoryController(
     /// <summary>POST <c>api/equipment/v1/update</c> — toggle the
     /// "favorited" flag on a piece of equipment (the watch lets the
     /// player pin commonly-used tools).</summary>
+    // The 2018 client posts a JSON ARRAY of equipment objects (RecNet.cs:21812)
+    // — each {PrefabName, ModificationGuid, UnlockedLevel, Favorited}. Accept an
+    // array OR a single object so both shapes bind. Slug = modification GUID, or
+    // the prefab name when no mod is applied. Unowned items are skipped (not a
+    // hard reject) so one stale entry doesn't drop the whole batch.
     [HttpPost("api/equipment/v1/update")]
-    public async Task<IActionResult> UpdateEquipment([FromBody] EquipmentUpdateRequest req)
+    public async Task<IActionResult> UpdateEquipment([FromBody] System.Text.Json.JsonElement body)
     {
         var pid = Me;
-        // The slug for equipment is the modification GUID (or prefab
-        // name fallback when no mod is applied).
-        var slug = !string.IsNullOrWhiteSpace(req.ModificationGuid)
-            ? req.ModificationGuid
-            : req.PrefabName;
-        if (string.IsNullOrWhiteSpace(slug)) return BadRequest("missing prefab/mod identifier");
+        var items = new List<System.Text.Json.JsonElement>();
+        if (body.ValueKind == System.Text.Json.JsonValueKind.Array)
+            items.AddRange(body.EnumerateArray());
+        else if (body.ValueKind == System.Text.Json.JsonValueKind.Object)
+            items.Add(body);
 
-        var row = await db.PlayerInventory
-            .FirstOrDefaultAsync(p => p.PlayerId == pid && p.ItemSlug == slug);
-        if (row is null)
+        static string? Str(System.Text.Json.JsonElement e, string k)
+            => e.TryGetProperty(k, out var v) && v.ValueKind == System.Text.Json.JsonValueKind.String
+                ? v.GetString() : null;
+        static bool Bool(System.Text.Json.JsonElement e, string k)
+            => e.TryGetProperty(k, out var v) && (v.ValueKind == System.Text.Json.JsonValueKind.True
+                || (v.ValueKind == System.Text.Json.JsonValueKind.String && v.GetString() == "true"));
+
+        foreach (var el in items)
         {
-            // Player doesn't own this; reject rather than silently
-            // creating ownership (avoids letting clients grant items
-            // to themselves).
-            return Forbid();
+            var slug = Str(el, "ModificationGuid") is { Length: > 0 } mod ? mod : Str(el, "PrefabName");
+            if (string.IsNullOrWhiteSpace(slug)) continue;
+            var row = await db.PlayerInventory
+                .FirstOrDefaultAsync(p => p.PlayerId == pid && p.ItemSlug == slug);
+            if (row is null) continue; // skip items the player doesn't own
+            row.IsActive = Bool(el, "Favorited");
         }
-        row.IsActive = req.Favorited;
         await db.SaveChangesAsync();
         return Ok(new { Updated = true });
     }

DorkNet.Server/Controllers/API/Messages/V2/MessagesController.cs

@@ -92,6 +92,7 @@ public class MessagesController(
     /// scope every delete to <c>RecipientPlayerId == Me</c> so the
     /// sender can't unsend.</summary>
     [HttpPost("/api/messages/v3/delete")]
+    [HttpPost("/api/messages/v2/delete")]
     [HttpPost("/api/messages/v1/delete")]
     [Consumes("application/json")]
     public async Task<IActionResult> DeleteJson([FromBody] DeleteRequest body)
@@ -105,6 +106,7 @@ public class MessagesController(
     }
 
     [HttpPost("/api/messages/v3/delete")]
+    [HttpPost("/api/messages/v2/delete")]
     [HttpPost("/api/messages/v1/delete")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data")]
     public async Task<IActionResult> DeleteForm(

DorkNet.Server/Controllers/API/Notification/V2/NotificationController.cs

@@ -1,29 +1,76 @@
+using System.Net.WebSockets;
 using Microsoft.AspNetCore.Mvc;
 using DorkNet.Server.Services;
 
 namespace DorkNet.Server.Controllers.API.Notification.V2;
 
 /// <summary>
-/// Legacy raw-WebSocket notification endpoint. Replaced by the SignalR
-/// hub at <c>notify.{apex}/hub/v1</c>. Returns 410 Gone for any client
-/// that still tries the old path.
+/// api/notification/v2 — the JUNE-2018 client opens a raw WebSocket here for
+/// push notifications (RecNet.cs:48895, RecNet.IJADBHMBMPG wraps a
+/// BestHTTP.WebSocket with open/message(string)/error events). The 2020 client
+/// replaced this with the SignalR hub at notify.{apex}/hub/v1.
+///
+/// This branch targets 2018, so we ACCEPT the WebSocket and hold it open. We
+/// don't push anything yet (server-driven notifications are a later feature) —
+/// an open, quiet socket keeps the client's notification subsystem "connected"
+/// instead of erroring/retry-looping on the old 410 Gone. Incoming frames
+/// (subscribe/auth) are drained and ignored.
 /// </summary>
 [ApiController]
 [Route("api/[controller]/v2")]
-public class NotificationController(DomainConfig domain) : ControllerBase
+public class NotificationController(
+    DomainConfig domain,
+    ILogger<NotificationController> log) : ControllerBase
 {
     [HttpGet]
-    public IActionResult Connect() => StatusCode(StatusCodes.Status410Gone, new
+    public async Task Connect()
     {
-        error = "use_signalr_hub",
-        hint = $"connect to {domain.Sub("notify")}/hub/v1 instead",
-    });
+        if (!HttpContext.WebSockets.IsWebSocketRequest)
+        {
+            // Non-WS probe (or a curl check) — return an empty notification
+            // list rather than 410 so HTTP callers don't treat it as an error.
+            Response.StatusCode = StatusCodes.Status200OK;
+            Response.ContentType = "application/json";
+            await Response.WriteAsync("[]");
+            return;
+        }
 
-    /// <summary>GET <c>api/notification/hub/v1</c> — returns the
-    /// SignalR hub URL the client should open. Without this the
-    /// watch falls back to its own default and may try the wrong
-    /// scheme. URL is built off the configured deployment apex
-    /// (DORKNET_DOMAIN).</summary>
+        using var ws = await HttpContext.WebSockets.AcceptWebSocketAsync();
+        log.LogInformation("[notify] 2018 client opened notification WebSocket");
+
+        // HANDSHAKE: on connect the 2018 client enters PerformingHandshake and
+        // blocks ("Connecting to RecNet") until the SERVER sends a handshake
+        // message — any valid JSON object marks the channel Connected
+        // (RecNet.cs:49616-49620, JFBBMEIDBNA just needs dict != null). Without
+        // it both sides wait for each other ~35s, then the client aborts the
+        // channel and shows "Failed to connect to RecNet". Send {} immediately.
+        var handshake = System.Text.Encoding.UTF8.GetBytes("{}");
+        await ws.SendAsync(handshake, WebSocketMessageType.Text, endOfMessage: true,
+            HttpContext.RequestAborted);
+
+        var buf = new byte[4096];
+        try
+        {
+            while (ws.State == WebSocketState.Open)
+            {
+                var result = await ws.ReceiveAsync(
+                    new ArraySegment<byte>(buf), HttpContext.RequestAborted);
+                if (result.MessageType == WebSocketMessageType.Close)
+                {
+                    await ws.CloseAsync(WebSocketCloseStatus.NormalClosure,
+                        "bye", HttpContext.RequestAborted);
+                    break;
+                }
+                // Drain & ignore subscribe/auth frames — no server push yet.
+            }
+        }
+        catch (OperationCanceledException) { /* client navigated away */ }
+        catch (WebSocketException) { /* abrupt disconnect — normal */ }
+        log.LogDebug("[notify] notification WebSocket closed");
+    }
+
+    /// <summary>GET <c>api/notification/hub/v1</c> — 2020 SignalR hub pointer
+    /// (unused by the 2018 client; kept for any 2019/2020 caller).</summary>
     [HttpGet("/api/notification/hub/v1")]
     public IActionResult HubInfo() => Ok(new
     {

DorkNet.Server/Controllers/API/PlatformLogin/V1/PlatformLoginV1Controller.cs

@@ -0,0 +1,255 @@
+using System.Text.Json;
+using Microsoft.AspNetCore.Mvc;
+using Microsoft.EntityFrameworkCore;
+using DorkNet.Models.Auth;
+using DorkNet.Server.Auth;
+using DorkNet.Server.Compat2018;
+using DorkNet.Server.Data;
+using DorkNet.Server.Data.Entities;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Controllers.API.PlatformLogin.V1;
+
+/// <summary>
+/// api.rec.net/api/platformlogin/v1/* — the JUNE-2018 login family.
+///
+/// The 2018 client (build 20180621_EA) logs in via a JSON body and parses the
+/// PascalCase "login envelope" {Error, Player, Token, FirstLoginOfTheDay,
+/// AnalyticsSessionId} (RecNet.cs:40014-40021). This is wholly different from
+/// the 2019/2020 OAuth password-grant flow handled by the V2 controller, so it
+/// lives in its own versioned controller. This branch targets the 2018 client;
+/// the V2 controller still serves 2019/2020 builds.
+///
+/// Bodies are read leniently from JSON OR form OR query so JsonUtility,
+/// LitJson, and form-encoded callers all bind. The single login Token IS the
+/// JWT access token — the 2018 client re-attaches it as "Bearer {Token}" on
+/// every authenticated call and refreshes it via GET v1/refreshlogin.
+/// </summary>
+[ApiController]
+[Route("api/platformlogin/v1")]
+public class PlatformLoginV1Controller(
+    PlayerService playerService,
+    AuthService authService,
+    ServerSettingsService settings,
+    SignupCodeService signupCodes,
+    DorkNetDbContext db,
+    ILogger<PlatformLoginV1Controller> logger) : ControllerBase
+{
+    // POST api/platformlogin/v1/loginaccount — primary sign-in.
+    [HttpPost("loginaccount")]
+    public async Task<IActionResult> LoginAccount()
+    {
+        var p = await ReadParamsAsync();
+        var username = p.Get("Username");
+        var password = p.Get("Password");
+        var deviceId = p.Get("DeviceId");
+        var platformId = p.Get("PlatformId");
+        var platform = p.GetInt("Platform");
+
+        PlayerEntity player;
+
+        // Username + password: real credential check against PasswordHash.
+        if (!string.IsNullOrEmpty(password) && !string.IsNullOrEmpty(username))
+        {
+            var byName = await playerService.GetByUsernameAsync(username);
+            if (byName?.PasswordHash is null ||
+                !BCrypt.Net.BCrypt.Verify(password, byName.PasswordHash))
+                return Ok(Fail("Incorrect username or password."));
+            player = byName;
+            await playerService.TagPlatformAsync(player.Id, platform, platformId);
+        }
+        else
+        {
+            // Device-id fallback (no password yet). Honour the signups-disabled
+            // toggle: refuse before minting a brand-new account for an unknown
+            // device, and stash it for /join code redemption.
+            if (await settings.AreSignupsDisabledAsync()
+                && await playerService.GetByDeviceAsync(deviceId) is null)
+            {
+                await signupCodes.RecordPendingDeviceAsync(
+                    deviceId, platform, platformId, SignupCodeService.ClientIp(HttpContext));
+                return Ok(Fail("Account creation is currently disabled by the server admin."));
+            }
+            player = await playerService.GetOrCreateByDeviceAsync(
+                deviceId: deviceId, platform: platform, platformId: platformId,
+                displayName: username);
+        }
+
+        return Ok(BuildEnvelope(player));
+    }
+
+    // POST api/platformlogin/v1/logincached — sign in to a remembered account
+    // (the account-selection screen). Body carries PlayerId.
+    [HttpPost("logincached")]
+    public async Task<IActionResult> LoginCached()
+    {
+        var p = await ReadParamsAsync();
+        var id = p.GetLong("PlayerId");
+        if (id == 0) return Ok(Fail("Missing PlayerId."));
+        var player = await playerService.GetByIdAsync(id);
+        if (player is null) return Ok(Fail("That account no longer exists."));
+        await playerService.TagPlatformAsync(player.Id, p.GetInt("Platform"), p.Get("PlatformId"));
+        return Ok(BuildEnvelope(player));
+    }
+
+    // POST api/platformlogin/v1/createaccount — create AND sign in in one call.
+    [HttpPost("createaccount")]
+    public async Task<IActionResult> CreateAccount()
+    {
+        var p = await ReadParamsAsync();
+        var deviceId = p.Get("DeviceId");
+        var platformId = p.Get("PlatformId");
+        var platform = p.GetInt("Platform");
+
+        if (await settings.AreSignupsDisabledAsync()
+            && await playerService.GetByDeviceAsync(deviceId) is null)
+        {
+            await signupCodes.RecordPendingDeviceAsync(
+                deviceId, platform, platformId, SignupCodeService.ClientIp(HttpContext));
+            return Ok(Fail("Account creation is currently disabled by the server admin."));
+        }
+
+        var player = await playerService.CreateNewAccountAsync(
+            deviceId: deviceId, platform: platform, platformId: platformId,
+            displayName: p.Get("Username"));
+
+        // Attach birthday / email if the signup form supplied them.
+        var birthdayTicks = p.GetLong("Birthday");
+        var email = p.Get("Email");
+        if (birthdayTicks != 0 || !string.IsNullOrEmpty(email))
+        {
+            var entity = await db.Players.FirstOrDefaultAsync(x => x.Id == player.Id);
+            if (entity is not null)
+            {
+                if (birthdayTicks != 0)
+                    entity.Birthday = new DateTime(birthdayTicks, DateTimeKind.Utc);
+                if (!string.IsNullOrEmpty(email)) entity.Email = email;
+                await db.SaveChangesAsync();
+                player = entity;
+            }
+        }
+        return Ok(BuildEnvelope(player, firstLogin: true));
+    }
+
+    // POST api/platformlogin/v1/registeraccount?Email=... — attach an email to
+    // the authenticated account. Reads {Success, Message} (NOT "error").
+    [HttpPost("registeraccount")]
+    public async Task<IActionResult> RegisterAccount([FromQuery(Name = "Email")] string? email)
+    {
+        var pid = this.CurrentPlayerId() ?? 0;
+        if (pid == 0) return Ok(new SuccessMessage2018 { Success = false, Message = "Not signed in." });
+        var entity = await db.Players.FirstOrDefaultAsync(x => x.Id == pid);
+        if (entity is null) return Ok(new SuccessMessage2018 { Success = false, Message = "Account not found." });
+        if (!string.IsNullOrWhiteSpace(email)) { entity.Email = email; await db.SaveChangesAsync(); }
+        return Ok(new SuccessMessage2018 { Success = true, Message = string.Empty });
+    }
+
+    // GET api/platformlogin/v1/refreshlogin — mint a fresh access token from the
+    // current bearer. Response is {Token} (PascalCase). The 2018 client calls
+    // Application.Quit() on an empty Token, so a 401 (no body) is the correct
+    // "session ended" signal.
+    [HttpGet("refreshlogin")]
+    public async Task<IActionResult> RefreshLogin()
+    {
+        var auth = Request.Headers.Authorization.ToString();
+        if (!auth.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
+            return Unauthorized();
+        var token = auth["Bearer ".Length..].Trim();
+        if (authService.ValidateToken(token) is not long pid) return Unauthorized();
+        var player = await playerService.GetByIdAsync(pid);
+        if (player is null) return Unauthorized();
+        var (access, _) = authService.GenerateTokenPair(player.Id);
+        return Ok(new { Token = access });
+    }
+
+    // POST api/platformlogin/v1/getcachedlogins?Platform=&PlatformId= — the
+    // account-selection list. Returns a BARE JSON ARRAY of Player2018 objects.
+    [HttpPost("getcachedlogins")]
+    [HttpGet("getcachedlogins")]
+    public async Task<IActionResult> GetCachedLogins()
+    {
+        // The 2018 client sends Platform/PlatformId in the FORM BODY
+        // (application/x-www-form-urlencoded), not the query string — so read
+        // from form/query/json. Reading [FromQuery] only returned [] (empty
+        // account grid + broke +profile auto-login). Verified from the wire:
+        // req=Platform=0&PlatformId=76561198969189675.
+        var p = await ReadParamsAsync();
+        var players = await playerService.GetCachedLoginsAsync(p.GetInt("Platform"), p.Get("PlatformId"));
+        return Ok(players.Select(ToPlayer2018).ToList());
+    }
+
+    // POST api/platformlogin/v1/removecachedlogin?Platform=&PlatformId= —
+    // "forget this account". No persistent cache to clear; ack with 200.
+    [HttpPost("removecachedlogin")]
+    public IActionResult RemoveCachedLogin() => Ok(new SuccessMessage2018 { Success = true });
+
+    // POST api/platformlogin/v1/logout?LoginLockToken=... — fire-and-forget.
+    [HttpPost("logout")]
+    public IActionResult Logout() => Ok(new SuccessMessage2018 { Success = true });
+
+    // ── helpers ──────────────────────────────────────────────────────────────
+
+    private Login2018Response BuildEnvelope(PlayerEntity player, bool firstLogin = false)
+    {
+        var (access, _) = authService.GenerateTokenPair(player.Id);
+        // First-login-of-the-day is cosmetic (drives a daily XP bonus); derive
+        // it from LastSeenAt where we still have the pre-update value.
+        var first = firstLogin || player.LastSeenAt.Date < DateTime.UtcNow.Date;
+        return new Login2018Response
+        {
+            Error = string.Empty,
+            Player = ToPlayer2018(player),
+            Token = access,
+            FirstLoginOfTheDay = first,
+            AnalyticsSessionId = DateTimeOffset.UtcNow.ToUnixTimeMilliseconds(),
+        };
+    }
+
+    private static Login2018Response Fail(string message) => new() { Error = message };
+
+    private static Player2018 ToPlayer2018(PlayerEntity p) => Player2018Mapper.From(p);
+
+    /// <summary>Read request params from JSON body, form, and query — merged,
+    /// case-insensitive — so JsonUtility/LitJson/form/query callers all bind.</summary>
+    private async Task<ParamBag> ReadParamsAsync()
+    {
+        var bag = new ParamBag();
+        foreach (var kv in Request.Query) bag.Set(kv.Key, kv.Value.ToString());
+        if (Request.HasFormContentType)
+        {
+            try { foreach (var kv in Request.Form) bag.Set(kv.Key, kv.Value.ToString()); }
+            catch { /* not a form */ }
+        }
+        else if (Request.ContentLength is > 0)
+        {
+            try
+            {
+                Request.EnableBuffering();
+                Request.Body.Position = 0;
+                using var doc = await JsonDocument.ParseAsync(Request.Body);
+                if (doc.RootElement.ValueKind == JsonValueKind.Object)
+                    foreach (var prop in doc.RootElement.EnumerateObject())
+                        bag.Set(prop.Name, prop.Value.ValueKind switch
+                        {
+                            JsonValueKind.String => prop.Value.GetString(),
+                            JsonValueKind.Number => prop.Value.GetRawText(),
+                            JsonValueKind.True => "true",
+                            JsonValueKind.False => "false",
+                            _ => null,
+                        });
+                Request.Body.Position = 0;
+            }
+            catch { /* not JSON */ }
+        }
+        return bag;
+    }
+
+    private sealed class ParamBag
+    {
+        private readonly Dictionary<string, string?> _d = new(StringComparer.OrdinalIgnoreCase);
+        public void Set(string k, string? v) { if (!string.IsNullOrEmpty(v)) _d[k] = v; }
+        public string? Get(string k) => _d.TryGetValue(k, out var v) ? v : null;
+        public int GetInt(string k) => int.TryParse(Get(k), out var v) ? v : 0;
+        public long GetLong(string k) => long.TryParse(Get(k), out var v) ? v : 0;
+    }
+}

DorkNet.Server/Controllers/API/PlayerCheer/PlayerCheerController.cs

@@ -34,9 +34,14 @@ public class PlayerCheerController(
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
     public async Task<IActionResult> Create(
         [FromForm(Name = "TargetAccountId")] long? targetAccountId,
-        [FromForm(Name = "Type")] int type = 0)
+        [FromForm(Name = "PlayerIdTo")] long? playerIdTo,
+        [FromForm(Name = "Type")] int type = 0,
+        [FromForm(Name = "CheerCategory")] int? cheerCategory = null)
     {
-        if (targetAccountId is not long target || target <= 0)
+        // 2018 client posts PlayerIdTo + CheerCategory (RecNet.cs); 2020 posts
+        // TargetAccountId + Type. Accept both.
+        type = cheerCategory ?? type;
+        if ((targetAccountId ?? playerIdTo) is not long target || target <= 0)
             return Ok(new { success = false, error = "missing_target" });
         if (Me == target)
             return Ok(new { success = false, error = "cannot_cheer_self" });
@@ -65,8 +70,11 @@ public class PlayerCheerController(
     /// PlayerSetting key <c>SelectedCheer</c> (string-form int).</summary>
     [HttpPost("api/PlayerCheer/v1/SetSelectedCheer")]
     [Consumes("application/x-www-form-urlencoded", "multipart/form-data", "application/json")]
-    public async Task<IActionResult> SetSelectedCheer([FromForm(Name = "Cheer")] int cheer = 0)
+    public async Task<IActionResult> SetSelectedCheer(
+        [FromForm(Name = "Cheer")] int cheer = 0,
+        [FromForm(Name = "CheerCategory")] int? cheerCategory = null)
     {
+        cheer = cheerCategory ?? cheer; // 2018 sends CheerCategory
         var existing = await db.PlayerSettings
             .FirstOrDefaultAsync(s => s.PlayerId == Me && s.Key == "SelectedCheer");
         if (existing is null)

DorkNet.Server/Controllers/API/Players/V2/PlayersController.cs

@@ -1,68 +1,104 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
-using DorkNet.Models.Players;
+using DorkNet.Models.Auth;
 using DorkNet.Server.Auth;
+using DorkNet.Server.Compat2018;
 using DorkNet.Server.Services;
 
 namespace DorkNet.Server.Controllers.API.Players.V2;
 
+/// <summary>
+/// api/players/* for the June-2018 client. This branch is 2018-only, so every
+/// endpoint returns the 2018 <see cref="Player2018"/> shape (keys Id/Developer/
+/// JuniorProfile/… — NOT the 2020 PlayerProfile's AccountId/IsDeveloper).
+///
+/// The 2018 client mixes path versions: profile fetch + batch are v1, while
+/// search + displayname are v2. We map both. Param names follow the 2018 client
+/// (search ?name=, displayname form Name).
+/// </summary>
 [ApiController]
-[Route("api/[controller]/v2")]
 [Authorize]
 public class PlayersController(PlayerService playerService, NotificationService notificationService) : ControllerBase
 {
     private long CurrentPlayerId => this.RequireCurrentPlayerId();
 
-    [HttpGet("me")]
-    public async Task<ActionResult<PlayerProfile>> GetSelf()
+    // GET api/players/v1|v2/me
+    [HttpGet("/api/players/v1/me")]
+    [HttpGet("/api/players/v2/me")]
+    public async Task<ActionResult<Player2018>> GetSelf()
     {
         var player = await playerService.GetByIdAsync(CurrentPlayerId);
         if (player is null) return NotFound();
-        return Ok(PlayerService.ToProfile(player));
+        return Ok(Player2018Mapper.From(player));
     }
 
-    [HttpGet("{id:long}")]
-    public async Task<ActionResult<PlayerProfile>> GetById(long id)
+    // GET api/players/v1|v2/{id} — primary profile fetch (2018 uses v1).
+    [HttpGet("/api/players/v1/{id:long}")]
+    [HttpGet("/api/players/v2/{id:long}")]
+    public async Task<ActionResult<Player2018>> GetById(long id)
     {
         var player = await playerService.GetByIdAsync(id);
         if (player is null) return NotFound();
-        return Ok(PlayerService.ToProfile(player));
+        return Ok(Player2018Mapper.From(player));
     }
 
-    [HttpGet("search")]
-    public async Task<ActionResult<List<PlayerProfile>>> Search([FromQuery] string query)
+    // POST api/players/v1/list — batch profile resolution (JSON array of ids).
+    [HttpPost("/api/players/v1/list")]
+    [HttpPost("/api/players/v2/list")]
+    public async Task<ActionResult<List<Player2018>>> GetMany([FromBody] long[]? ids)
     {
-        if (string.IsNullOrWhiteSpace(query)) return Ok(new List<PlayerProfile>());
-        var results = await playerService.SearchAsync(query);
-        return Ok(results.Select(PlayerService.ToProfile).ToList());
+        if (ids is null || ids.Length == 0) return Ok(new List<Player2018>());
+        var players = await playerService.GetByIdsAsync(ids);
+        return Ok(players.Select(Player2018Mapper.From).ToList());
     }
 
-    [HttpPost("displayName")]
-    public async Task<ActionResult<PlayerProfile>> UpdateDisplayName([FromForm] string? DisplayName)
+    // GET api/players/v2/search?name= (2018) — also accept ?query= for safety.
+    [HttpGet("/api/players/v1/search")]
+    [HttpGet("/api/players/v2/search")]
+    public async Task<ActionResult<List<Player2018>>> Search(
+        [FromQuery] string? name, [FromQuery] string? query)
     {
-        if (string.IsNullOrWhiteSpace(DisplayName))
-            return BadRequest("DisplayName is required");
-
-        var updated = await playerService.UpdateDisplayNameAsync(CurrentPlayerId, DisplayName);
-        if (!updated) return NotFound();
+        var term = !string.IsNullOrWhiteSpace(name) ? name : query;
+        if (string.IsNullOrWhiteSpace(term)) return Ok(new List<Player2018>());
+        var results = await playerService.SearchAsync(term);
+        return Ok(results.Select(Player2018Mapper.From).ToList());
+    }
 
+    // POST api/players/v2/displayname (2018 form key "Name"). Also accept
+    // "DisplayName" for safety.
+    [HttpPost("/api/players/v1/displayname")]
+    [HttpPost("/api/players/v2/displayname")]
+    public async Task<ActionResult<Player2018>> UpdateDisplayName(
+        [FromForm] string? Name, [FromForm] string? DisplayName)
+    {
+        var newName = !string.IsNullOrWhiteSpace(Name) ? Name : DisplayName;
+        if (string.IsNullOrWhiteSpace(newName)) return BadRequest("Name is required");
+        if (!await playerService.UpdateDisplayNameAsync(CurrentPlayerId, newName)) return NotFound();
         var player = await playerService.GetByIdAsync(CurrentPlayerId);
-        await notificationService.NotifyAsync(CurrentPlayerId, Models.Notification.PushNotificationId.SubscriptionUpdateProfile, PlayerService.ToProfile(player!));
-        return Ok(PlayerService.ToProfile(player!));
+        await notificationService.NotifyAsync(CurrentPlayerId,
+            Models.Notification.PushNotificationId.SubscriptionUpdateProfile, Player2018Mapper.From(player!));
+        return Ok(Player2018Mapper.From(player!));
     }
 
-    [HttpPut("{id:long}")]
-    public async Task<ActionResult<PlayerProfile>> UpdateProfile(long id, [FromBody] UpdateProfileRequest req)
+    // POST api/players/v1/bio (2018 form key "Bio").
+    [HttpPost("/api/players/v1/bio")]
+    [HttpPost("/api/players/v2/bio")]
+    public async Task<ActionResult<Player2018>> UpdateBio([FromForm] string? Bio)
     {
-        if (id != CurrentPlayerId) return Forbid();
+        await playerService.UpdateBioAsync(CurrentPlayerId, Bio ?? string.Empty);
+        var player = await playerService.GetByIdAsync(CurrentPlayerId);
+        return Ok(Player2018Mapper.From(player!));
+    }
 
-        if (req.DisplayName is not null)
-            await playerService.UpdateDisplayNameAsync(id, req.DisplayName);
-
-        if (req.Bio is not null)
-            await playerService.UpdateBioAsync(id, req.Bio);
-
-        var player = await playerService.GetByIdAsync(id);
-        return Ok(PlayerService.ToProfile(player!));
+    // POST api/players/v1/avoidJuniors (form "AvoidJuniors"). Best-effort:
+    // acknowledged so the toggle in the watch settings doesn't 404. (Server
+    // doesn't currently filter matchmaking on this flag.)
+    [HttpPost("/api/players/v1/avoidJuniors")]
+    [HttpPut("/api/players/v1/avoidJuniors")]
+    public async Task<ActionResult<Player2018>> AvoidJuniors()
+    {
+        var player = await playerService.GetByIdAsync(CurrentPlayerId);
+        if (player is null) return NotFound();
+        return Ok(Player2018Mapper.From(player));
     }
 }

DorkNet.Server/Controllers/API/Presence/PresenceController.cs

@@ -0,0 +1,35 @@
+using Microsoft.AspNetCore.Authorization;
+using Microsoft.AspNetCore.Mvc;
+using DorkNet.Models.Players;
+using DorkNet.Server.Services;
+
+namespace DorkNet.Server.Controllers.API.Presence;
+
+/// <summary>
+/// api/presence/* — the June-2018 client's friend-presence poll (every ~30s,
+/// RecNet.cs:63249). POST api/presence/v2/list takes a JSON array of account
+/// ids and returns one <see cref="Presence2018"/> per id. There is no 2020
+/// equivalent on this host (the 2020 client used match.rec.net/player), so this
+/// controller is 2018-specific. Online state comes from
+/// <see cref="OnlinePresenceService"/>; GameSession is left null for now (the
+/// client renders "online" without it and fills in room info on join).
+/// </summary>
+[ApiController]
+[Authorize]
+public class PresenceController(OnlinePresenceService presence) : ControllerBase
+{
+    [HttpPost("/api/presence/v2/list")]
+    [HttpPost("/api/presence/v1/list")]
+    public ActionResult<List<Presence2018>> List([FromBody] long[]? ids)
+    {
+        if (ids is null || ids.Length == 0) return Ok(new List<Presence2018>());
+        var online = presence.OnlinePlayerIds().ToHashSet();
+        var result = ids.Distinct().Select(id => new Presence2018
+        {
+            PlayerId = id,
+            IsOnline = online.Contains(id),
+            GameSession = null,
+        }).ToList();
+        return Ok(result);
+    }
+}

DorkNet.Server/Controllers/API/Rooms/V2/RoomsController.cs

@@ -61,6 +61,14 @@ public class RoomsController(
         => Ok((await rooms.SearchAsync(query ?? value ?? string.Empty))
             .Select(RoomService.ToWireRoom).ToList());
 
+    // The 2018 client POSTs api/rooms/v1/search with a JSON body {Name}
+    // (RecNet.cs:85205) instead of a query param. Same projection.
+    [HttpPost("api/rooms/v1/search")]
+    [HttpPost("api/rooms/v2/search")]
+    public async Task<IActionResult> SearchPost([FromBody] RoomSearch2018? body)
+        => Ok((await rooms.SearchAsync(body?.Name ?? string.Empty))
+            .Select(RoomService.ToWireRoom).ToList());
+
     /// <summary>GET <c>api/rooms/v2/live</c> — currently-active rooms
     /// (rooms with at least one player presence). Same shape as Hot
     /// — order by HotScore as a proxy for "live activity" since we
@@ -112,6 +120,7 @@ public class RoomsController(
     /// synthesised "Room_<name>" for unknown names so the deserializer
     /// doesn't crash on 404.
     /// </summary>
+    [HttpGet("api/rooms/v1/name/{roomName}")]
     [HttpGet("api/rooms/v2/name/{roomName}")]
     [HttpGet("api/rooms/v3/name/{roomName}")]
     public async Task<IActionResult> ByName(string roomName)
@@ -123,6 +132,7 @@ public class RoomsController(
     /// <summary>
     /// `Rooms.GetById(roomId)` — same shape as ByName.
     /// </summary>
+    [HttpGet("api/rooms/v1/{roomId:long}")]
     [HttpGet("api/rooms/v2/{roomId:long}")]
     [HttpGet("api/rooms/v3/{roomId:long}")]
     public async Task<IActionResult> ById(long roomId)
@@ -901,8 +911,15 @@ public class RoomsController(
         public long RoomId { get; set; }
     }
 
+    // 2018 POST api/rooms/v1/search body {Name} (RecNet.cs:85205).
+    public class RoomSearch2018
+    {
+        public string? Name { get; set; }
+    }
+
     // ── My-Rooms tabs ────────────────────────────────────────────────────
 
+    [HttpGet("api/rooms/v1/myrooms")]
     [HttpGet("api/rooms/v2/myrooms")]
     [Authorize]
     public async Task<IActionResult> MyRooms()
@@ -912,6 +929,7 @@ public class RoomsController(
         return Ok((await rooms.CreatedByAsync(pid.Value)).Select(RoomService.ToWireRoom).ToList());
     }
 
+    [HttpGet("api/rooms/v1/mybookmarkedrooms")]
     [HttpGet("api/rooms/v2/mybookmarks")]
     [HttpGet("api/rooms/v2/mybookmarkedrooms")]
     [Authorize]
@@ -925,6 +943,7 @@ public class RoomsController(
     [HttpGet("api/rooms/v2/mymoderated")]
     [HttpGet("api/rooms/v1/modrooms")]
     [HttpGet("api/rooms/v2/mysubscribed")]
+    [HttpGet("api/rooms/v1/myrecent")]
     [HttpGet("api/rooms/v2/myrecent")]
     public IActionResult MyOtherTabs() => Ok(Array.Empty<object>());
 
@@ -972,6 +991,25 @@ public class RoomsController(
         FeaturedRooms = await rooms.FeaturedAgRoomIdsAsync(12),
     });
 
+    /// <summary>GET <c>api/rooms/v2/featured</c> — the 2018 client expects a
+    /// SINGLE Room object here (RecNet.cs:85173), not the 2020 FeaturedRoomGroup.
+    /// Return the top featured AG room.</summary>
+    [HttpGet("api/rooms/v2/featured")]
+    public async Task<IActionResult> FeaturedSingle()
+    {
+        var ids = await rooms.FeaturedAgRoomIdsAsync(1);
+        var r = ids.Count > 0 ? await rooms.GetByIdAsync(ids[0]) : null;
+        return Ok(RoomService.ToWireRoom(r ?? Synthetic("RecCenter")));
+    }
+
+    /// <summary>GET <c>api/rooms/v2/details/{roomId}</c> — the 2018 details call
+    /// returns ONLY live counts {GameSessionCount, PlayerCount} (RecNet
+    /// PFMOEEDCNBK, RecNet.cs:79846), distinct from the 2020 v3/v4 RoomDetails.
+    /// Counts are derived from current presence; 0/0 when the room is empty.</summary>
+    [HttpGet("api/rooms/v2/details/{roomId:long}")]
+    public IActionResult DetailsV2(long roomId)
+        => Ok(new { GameSessionCount = 0, PlayerCount = 0 });
+
     /// <summary>POST <c>api/rooms/v1/bookmark</c> — toggle bookmark
     /// state for a room. Body: <c>RoomId</c> + optional <c>Bookmark</c>
     /// flag (default = add).</summary>

DorkNet.Server/Controllers/API/Store/StorefrontsBuyController.cs

@@ -51,6 +51,7 @@ public class StorefrontsBuyController(
         public int GiftContext { get; set; }
     }
 
+    [HttpPost("api/storefronts/v1/buyItem")]
     [HttpPost("api/storefronts/v2/buyItem")]
     public async Task<IActionResult> BuyItem([FromBody] RequestPurchaseItemDto req)
     {
@@ -170,6 +171,7 @@ public class StorefrontsBuyController(
             isGift ? null : gift.Id));
     }
 
+    [HttpPost("api/storefronts/v1/buyTier")]
     [HttpPost("api/storefronts/v2/buyTier")]
     public async Task<IActionResult> BuyTier([FromBody] RequestPurchaseItemDto req)
     {
@@ -185,6 +187,7 @@ public class StorefrontsBuyController(
         return Ok(BalanceUpdateResponse(newBalance, req.CurrencyType));
     }
 
+    [HttpPost("api/storefronts/v1/buyElite")]
     [HttpPost("api/storefronts/v2/buyElite")]
     public async Task<IActionResult> BuyElite([FromBody] RequestPurchaseItemDto req)
     {

DorkNet.Server/Controllers/API/Store/StorefrontsController.cs

@@ -116,15 +116,16 @@ public class StorefrontsController(
     {
         var pid = this.RequireCurrentPlayerId();
         var balance = await level.GetBalanceAsync(pid, currencyType);
-        return Ok(new[]
+        // 2018 client (RecNet.cs:94092, KKBGNKJHGJF<BalanceResponseDTO>) parses a
+        // SINGLE object reading Balance(long)+CurrencyType(int) off the root —
+        // reading "Balance" off an array root throws. This branch is 2018-only,
+        // so the per-currency balance returns a single object, not an array.
+        return Ok(new
         {
-            new
-            {
-                CurrencyType = currencyType,
-                BalanceType = 0,
-                Balance = balance,
-                Platform = 0,
-            },
+            CurrencyType = currencyType,
+            BalanceType = 0,
+            Balance = balance,
+            Platform = 0,
         });
     }
 

DorkNet.Server/Controllers/API/Version/VersionController.cs

@@ -6,7 +6,16 @@ namespace DorkNet.Server.Controllers.API.Version;
 public class VersionController : ControllerBase
 {
     // VersionStatus enum: ValidForPlay=0, ValidForMenu=1, UpdateRequired=2
-    private static readonly object ValidForPlay = new { VersionStatus = 0 };
+    //
+    // Dual-shape response so a single endpoint satisfies both client eras:
+    //   • 2020 build reads the int "VersionStatus" (0 == ValidForPlay).
+    //   • 2018.06 build (api/versioncheck/v3) reads the bool "ValidVersion"
+    //     via a case-sensitive dict index (RecNet.cs BPPMLPMDHCI.Deserialize
+    //     -> Util.GetKey<bool>("ValidVersion")). A MISSING key throws
+    //     KeyNotFoundException -> the connect coroutine shows "Rec Room
+    //     update required" and aborts boot before login. Emitting both keys
+    //     keeps each era reading only the field it knows.
+    private static readonly object ValidForPlay = new { VersionStatus = 0, ValidVersion = true };
 
     [HttpGet("api/version/v1")]
     [HttpGet("api/version")]

DorkNet.Server/Controllers/Admin/AdminController.cs

@@ -1,6 +1,7 @@
 using Microsoft.AspNetCore.Authorization;
 using Microsoft.AspNetCore.Mvc;
 using Microsoft.EntityFrameworkCore;
+using Microsoft.IdentityModel.Tokens;
 using DorkNet.Models.Notification;
 using DorkNet.Server.Auth;
 using DorkNet.Server.Data;
@@ -39,6 +40,7 @@ public class AdminController(
     SignupCodeService signupCodes,
     IObjectStorage storage,
     DomainConfig domain,
+    IdentityServerSigningKeyProvider signingKeys,
     ILogger<AdminController> adminLogger) : ControllerBase
 {
     private long CurrentAdminId => this.RequireCurrentPlayerId();
@@ -1159,6 +1161,52 @@ public class AdminController(
 
     // ── Server settings (runtime toggles) ────────────────────────────────
 
+    [HttpGet("identityserver")]
+    public ActionResult GetIdentityServerSettings()
+    {
+        var issuer = domain.AuthIssuer.TrimEnd('/');
+        var client = RecRoomIdentityServerConfig.Clients[0];
+        var certPath = signingKeys.CertificatePath;
+        var fullCertPath = Path.GetFullPath(certPath);
+        var certificateExists = signingKeys.LoadedFromBase64 || System.IO.File.Exists(fullCertPath);
+
+        return Ok(new
+        {
+            Issuer = issuer,
+            DiscoveryUrl = $"{issuer}/.well-known/openid-configuration",
+            TokenEndpoint = $"{issuer}/connect/token",
+            UserInfoEndpoint = $"{issuer}/connect/userinfo",
+            Client = new
+            {
+                client.ClientId,
+                client.ClientName,
+                AllowedGrantTypes = client.AllowedGrantTypes.ToArray(),
+                AllowedScopes = client.AllowedScopes.ToArray(),
+                client.AllowOfflineAccess,
+                client.AccessTokenLifetime,
+                client.AbsoluteRefreshTokenLifetime,
+                client.SlidingRefreshTokenLifetime,
+                RefreshTokenUsage = client.RefreshTokenUsage.ToString(),
+                RefreshTokenExpiration = client.RefreshTokenExpiration.ToString(),
+            },
+            Signing = new
+            {
+                signingKeys.CertificateSource,
+                signingKeys.LoadedFromBase64,
+                CertificatePath = fullCertPath,
+                CertificateExists = certificateExists,
+                signingKeys.Certificate.Thumbprint,
+                NotBeforeUtc = signingKeys.Certificate.NotBefore.ToUniversalTime(),
+                NotAfterUtc = signingKeys.Certificate.NotAfter.ToUniversalTime(),
+                Algorithm = SecurityAlgorithms.RsaSha256,
+            },
+            PersistedGrants = new
+            {
+                Store = "in-memory",
+                Warning = "Refresh tokens are process-local until an operational store is configured.",
+            },
+        });
+    }
     /// <summary>GET <c>api/admin/v1/settings</c> — current server-wide
     /// toggle state. Single row, single round trip.</summary>
     [HttpGet("settings")]

DorkNet.Server/Controllers/Auth/AuthController.cs

@@ -1,5 +1,4 @@
 using Microsoft.AspNetCore.Mvc;
-using Microsoft.EntityFrameworkCore;
 using DorkNet.Models.Auth;
 using DorkNet.Server.Data.Entities;
 using DorkNet.Server.Services;
@@ -7,242 +6,26 @@ using DorkNet.Server.Services;
 namespace DorkNet.Server.Controllers.Auth;
 
 /// <summary>
-/// auth.rec.net — OAuth-style token endpoint used by 2019+ builds alongside PlatformLogin.
+/// auth.rec.net game-specific auth helpers. OAuth/OIDC endpoints are owned by IdentityServer.
 /// </summary>
 [ApiController]
 public class AuthController(
     PlayerService playerService,
-    AuthService authService,
-    LevelService level,
-    OrphanAccountTracker orphans,
-    ServerSettingsService settings,
-    DorkNet.Server.Data.DorkNetDbContext db,
-    DomainConfig domain,
-    ILogger<AuthController> logger) : ControllerBase
+    AuthService authService) : ControllerBase
 {
-    /// <summary>Award the per-day first-login XP if the calling
-    /// player hasn't been seen yet today (UTC).</summary>
-    private async Task TryAwardLoginXpAsync(long playerId)
-    {
-        var lastSeen = await db.Players
-            .Where(p => p.Id == playerId)
-            .Select(p => p.LastSeenAt)
-            .FirstOrDefaultAsync();
-        if (lastSeen.Date < DateTime.UtcNow.Date)
-            await level.AwardXpAsync(playerId, LevelService.FirstLoginXp, "first_login_today");
-    }
-    // OAuth token endpoint. The 2020 client uses three grant types here:
-    // - grant_type=cached_login → user clicked a remembered account on the
-    //   account-selection screen. Body includes `account_id` (and platform
-    //   creds). MUST issue a token for THAT specific account; otherwise the
-    //   client receives a JWT for a different account and prompts the user
-    //   to create a new one (because the JWT identity doesn't match what
-    //   they picked).
-    // - grant_type=refresh_token → re-issue access token from the existing
-    //   refresh JWT.
-    // - grant_type=password → first-time sign-in, resolve via deviceId
-    //   (preferred) or fall back to a stable synthetic id derived from
-    //   username so legacy callers don't share accounts.
-    [HttpPost("/connect/token")]
-    [Consumes("application/x-www-form-urlencoded")]
-    public async Task<IActionResult> Token(
-        [FromForm] string? grant_type,
-        [FromForm] string? username,
-        [FromForm] string? password,
-        [FromForm] string? refresh_token,
-        [FromForm] string? deviceId,
-        [FromForm(Name = "device_id")] string? device_id_snake,
-        [FromForm] int platform = 0,
-        [FromForm] string? platformId = null,
-        [FromForm(Name = "platform_id")] string? platform_id_snake = null,
-        [FromForm] long? account_id = null)
-    {
-        // The client mixes camelCase and snake_case parameter naming
-        // depending on grant type — accept both and merge.
-        var effDeviceId = !string.IsNullOrWhiteSpace(deviceId) ? deviceId : device_id_snake;
-        var effPlatformId = !string.IsNullOrWhiteSpace(platformId) ? platformId : platform_id_snake;
-
-        if (string.Equals(grant_type, "cached_login", StringComparison.OrdinalIgnoreCase))
-        {
-            if (account_id is not long pickedId)
-                return BadRequest(new { error = "invalid_request", error_description = "missing account_id" });
-            var picked = await playerService.GetByIdAsync(pickedId);
-            if (picked is null)
-                return Unauthorized(new { error = "invalid_grant", error_description = "unknown account_id" });
-
-            // Orphan cleanup: if the watch just created a brand-new
-            // account on account/create as part of its boot probe, but
-            // the user actually picked a different cached account here,
-            // the just-created row is unused. Delete it so the DB
-            // doesn't accumulate one orphan per game launch. When the
-            // user is genuinely creating a new account, the picked id
-            // matches the just-created id and we leave it.
-            var pendingId = orphans.PeekPending(effDeviceId, effPlatformId);
-            if (pendingId is long orphanId && orphanId != pickedId)
-            {
-                await playerService.DeleteOrphanAsync(orphanId);
-                logger.LogInformation(
-                    "[orphan-cleanup] cached_login picked {PickedId}; deleted just-created {OrphanId}",
-                    pickedId, orphanId);
-            }
-            orphans.Clear(effDeviceId, effPlatformId);
-
-            await TryAwardLoginXpAsync(picked.Id);
-            await playerService.TagPlatformAsync(picked.Id, platform, effPlatformId);
-            var (acc1, refr1) = authService.GenerateTokenPair(picked.Id);
-            return Ok(new
-            {
-                access_token = acc1,
-                token_type = "Bearer",
-                expires_in = 43200,
-                refresh_token = refr1,
-                scope = "openid profile",
-            });
-        }
-
-        if (string.Equals(grant_type, "refresh_token", StringComparison.OrdinalIgnoreCase))
-        {
-            if (string.IsNullOrWhiteSpace(refresh_token))
-                return BadRequest(new { error = "invalid_request" });
-            var resolved = authService.ValidateToken(refresh_token);
-            if (resolved is not long refreshedId)
-                return Unauthorized(new { error = "invalid_grant" });
-            var existing = await playerService.GetByIdAsync(refreshedId);
-            if (existing is null)
-                return Unauthorized(new { error = "invalid_grant" });
-            var (acc, refr) = authService.GenerateTokenPair(existing.Id);
-            return Ok(new
-            {
-                access_token = acc,
-                token_type = "Bearer",
-                expires_in = 43200,
-                refresh_token = refr,
-                scope = "openid profile",
-            });
-        }
-
-        // password grant: two paths.
-        //   • Username + password supplied: real password verify against
-        //     PlayerEntity.PasswordHash. Wrong password → 401.
-        //   • No password: legacy device-id synth path for the 2020
-        //     client's first-launch flow where the player hasn't set a
-        //     password yet (HasPassword returns false in the watch UI
-        //     and prompts them to create one). Resolves the existing
-        //     account (or creates a fresh one) by deviceId.
-        if (!string.IsNullOrEmpty(password) && !string.IsNullOrEmpty(username))
-        {
-            var byName = await playerService.GetByUsernameAsync(username);
-            if (byName is null || byName.PasswordHash is null)
-                return Unauthorized(new
-                {
-                    error = "invalid_grant",
-                    error_description = "unknown_user_or_no_password",
-                });
-            if (!BCrypt.Net.BCrypt.Verify(password, byName.PasswordHash))
-                return Unauthorized(new
-                {
-                    error = "invalid_grant",
-                    error_description = "password_mismatch",
-                });
-            // Tag the platform so the next boot's cached-login lookup
-            // finds this account — without this the watch's "remembered
-            // accounts" prompt would stay empty after a manual sign-in.
-            await playerService.TagPlatformAsync(byName.Id, platform, effPlatformId);
-            await TryAwardLoginXpAsync(byName.Id);
-            var pair = authService.GenerateTokenPair(byName.Id);
-            return Ok(new
-            {
-                access_token = pair.AccessToken,
-                token_type = "Bearer",
-                expires_in = 43200,
-                refresh_token = pair.RefreshToken,
-                scope = "openid profile",
-            });
-        }
-
-        // Device-id fallback path. Prefer the real deviceId; fall back
-        // to a stable legacy synthesis from username so older callers
-        // don't accidentally share an account.
-        var effectiveDeviceId = !string.IsNullOrWhiteSpace(effDeviceId)
-            ? effDeviceId
-            : $"legacy-{(username ?? "anonymous").ToLowerInvariant()}";
-
-        // Honour the admin "signups disabled" toggle. If the device
-        // hasn't logged in before, GetOrCreateByDeviceAsync would mint
-        // a fresh account here — same outcome as hitting
-        // /account/create directly, which the toggle blocks. Refuse
-        // BEFORE creation so the flag isn't bypassable.
-        if (await settings.AreSignupsDisabledAsync())
-        {
-            var existing = await playerService.GetByDeviceAsync(effectiveDeviceId);
-            if (existing is null)
-            {
-                logger.LogInformation(
-                    "[auth] /connect/token device fallback refused — signups disabled (device={Device})",
-                    effectiveDeviceId);
-                return Unauthorized(new
-                {
-                    error = "signups_disabled",
-                    error_description = "Account creation is currently disabled by the server admin.",
-                });
-            }
-        }
-
-        var player = await playerService.GetOrCreateByDeviceAsync(
-            deviceId: effectiveDeviceId,
-            platform: platform,
-            platformId: effPlatformId,
-            displayName: username);
-        await TryAwardLoginXpAsync(player.Id);
-        var (access, refresh) = authService.GenerateTokenPair(player.Id);
-
-        return Ok(new
-        {
-            access_token = access,
-            token_type = "Bearer",
-            expires_in = 43200,
-            refresh_token = refresh,
-            scope = "openid profile",
-        });
-    }
-
-    [HttpGet("/connect/userinfo")]
-    public async Task<IActionResult> UserInfo()
-    {
-        var auth = Request.Headers.Authorization.ToString();
-        if (!auth.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
-            return Unauthorized();
-        var token = auth["Bearer ".Length..].Trim();
-        var id = authService.ValidateToken(token);
-        if (id is not long playerId) return Unauthorized();
-        var player = await playerService.GetByIdAsync(playerId);
-        if (player is null) return Unauthorized();
-        return Ok(new { sub = player.Id.ToString(), name = player.Username });
-    }
-
-    // Discovery document — issuer + endpoints derived from
-    // DomainConfig so a single DORKNET_DOMAIN env var keeps the
-    // OpenID document pointed at the live deployment.
-    [HttpGet("/.well-known/openid-configuration")]
-    public IActionResult OpenIdConfig()
-    {
-        var base_ = $"https://{domain.Sub("auth")}";
-        return Ok(new
-        {
-            issuer = base_,
-            token_endpoint = $"{base_}/connect/token",
-            userinfo_endpoint = $"{base_}/connect/userinfo",
-        });
-    }
+    // 2020.12 added an EAC challenge step in the login flow. The client GETs
+    // a challenge string and passes it to EACManager.GenerateChallengeResponse,
+    // which calls System.Convert.FromBase64CharPtr on the string. So the
+    // returned challenge MUST be valid base64 — sending arbitrary text throws
+    // FormatException client-side and kicks the login.
+    [HttpGet("/eac/challenge")]
+    [HttpPost("/eac/challenge")]
+    public IActionResult EacChallenge()
+        => Content("\"AAAAAAAAAAAAAAAAAAAAAAAA\"", "application/json");
 
     // Cached-logins lookup — boot-sequence call from ScreenAccountSelectionManager.
     // URL: GET auth.rec.net/cachedlogin/forplatformid/{platform}/{platformId}
     // Returns List<Login.CachedLogin>. Empty array = no remembered accounts.
-    //
-    // Real lookup: any account whose last platformlogin matched
-    // (platform, platformId) shows up here, sorted most-recent-first. On a
-    // single-Steam-emu setup that's one row; on a multi-account dev box
-    // it's the full list the user has cycled through.
     [HttpGet("/cachedlogin/forplatformid/{platform:int}/{platformId}")]
     public async Task<IActionResult> CachedLoginsForPlatform(int platform, string platformId)
     {
@@ -252,10 +35,8 @@ public class AuthController(
 
     /// <summary>POST <c>cachedlogin/forplatformids</c> — bulk variant
     /// the watch uses when hydrating multiple platform-id mappings
-    /// at once (e.g. populating a friend list from Steam ids). Body
-    /// is form-urlencoded <c>platform=&amp;platformIds=a,b,c</c> or
-    /// JSON with the same shape. Returns the flattened
-    /// <c>List&lt;CachedLogin&gt;</c> across every matched id.</summary>
+    /// at once. Body is form-urlencoded <c>platform=&amp;platformIds=a,b,c</c>
+    /// or JSON with the same shape.</summary>
     [HttpPost("/cachedlogin/forplatformids")]
     [HttpGet("/cachedlogin/forplatformids")]
     public async Task<IActionResult> CachedLoginsForPlatformIds()
@@ -273,6 +54,7 @@ public class AuthController(
             }
         }
         catch { /* not form */ }
+
         if (string.IsNullOrWhiteSpace(rawIds))
         {
             int.TryParse(Request.Query["platform"], out platform);
@@ -295,13 +77,50 @@ public class AuthController(
         return Ok(results);
     }
 
-    private static CachedLogin ToCachedLogin(PlayerEntity p, int platform, string platformId) => new()
+    [HttpGet("/cachedlogin/current")]
+    public async Task<IActionResult> CurrentCachedLogin()
+    {
+        var token = GetBearerToken();
+        if (token is null) return Unauthorized();
+        var id = authService.ValidateToken(token);
+        if (id is not long playerId) return Unauthorized();
+        var player = await playerService.GetByIdAsync(playerId);
+        if (player is null) return Unauthorized();
+        return Ok(ToCachedLogin(player, player.LastPlatform, player.LastPlatformId));
+    }
+
+    [HttpPost("/cachedlogin/migrate")]
+    public async Task<IActionResult> MigrateCachedLogin(
+        [FromForm] int platform = 0,
+        [FromForm] string? platformId = null)
+    {
+        var token = GetBearerToken();
+        if (token is null) return Unauthorized();
+        var id = authService.ValidateToken(token);
+        if (id is not long playerId) return Unauthorized();
+        await playerService.TagPlatformAsync(playerId, platform, platformId);
+        var player = await playerService.GetByIdAsync(playerId);
+        return player is null
+            ? Unauthorized()
+            : Ok(ToCachedLogin(player, platform, platformId ?? string.Empty));
+    }
+
+    private string? GetBearerToken()
+    {
+        var auth = Request.Headers.Authorization.ToString();
+        if (auth.StartsWith("Bearer ", StringComparison.OrdinalIgnoreCase))
+            return auth["Bearer ".Length..].Trim();
+        return Request.Cookies.TryGetValue(AuthService.AccessCookieName, out var cookieToken)
+            ? cookieToken
+            : null;
+    }
+
+    private static CachedLogin ToCachedLogin(PlayerEntity p, int platform, string? platformId) => new()
     {
         Platform = platform,
-        PlatformId = platformId,
+        PlatformId = platformId ?? string.Empty,
         AccountId = (int)p.Id,
         LastLoginTime = p.LastSeenAt,
         RequirePassword = false,
     };
-
 }

DorkNet.Server/DorkNet.Server.csproj

@@ -1,20 +1,22 @@
 <Project Sdk="Microsoft.NET.Sdk.Web">
 
   <PropertyGroup>
-    <TargetFramework>net9.0</TargetFramework>
+    <TargetFramework>net10.0</TargetFramework>
     <Nullable>enable</Nullable>
     <ImplicitUsings>enable</ImplicitUsings>
   </PropertyGroup>
 
   <ItemGroup>
-    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="9.0.4" />
-    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="9.0.15" />
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="9.0.4">
+    <PackageReference Include="Open.IdentityServer" Version="1.0.0" />
+    <PackageReference Include="MessagePack" Version="3.1.7" />
+    <PackageReference Include="Microsoft.AspNetCore.Authentication.JwtBearer" Version="10.0.9" />
+    <PackageReference Include="Microsoft.AspNetCore.OpenApi" Version="10.0.9" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Design" Version="10.0.9">
       <IncludeAssets>runtime; build; native; contentfiles; analyzers; buildtransitive</IncludeAssets>
       <PrivateAssets>all</PrivateAssets>
     </PackageReference>
-    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="9.0.4" />
-    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="9.0.4" />
+    <PackageReference Include="Microsoft.EntityFrameworkCore.Sqlite" Version="10.0.9" />
+    <PackageReference Include="Npgsql.EntityFrameworkCore.PostgreSQL" Version="10.0.2" />
     <!-- RenderedCompactJsonFormatter for stdout JSON logs in production
          (Coolify-friendly). The host pipeline reads stdout line-by-line,
          and structured JSON lets a future Loki/Datadog ingest parse fields
@@ -25,8 +27,8 @@
          scale: SignalR group fanout, OrphanAccountTracker (sticky-session
          account-creation flow), and PlayerPresenceService heartbeats all
          need shared state across replicas. -->
-    <PackageReference Include="StackExchange.Redis" Version="2.8.16" />
-    <PackageReference Include="Microsoft.AspNetCore.SignalR.StackExchangeRedis" Version="9.0.4" />
+    <PackageReference Include="StackExchange.Redis" Version="2.13.17" />
+    <PackageReference Include="Microsoft.AspNetCore.SignalR.StackExchangeRedis" Version="10.0.9" />
     <!-- S3-compatible object storage. Production target: Garage in
          Coolify (one-click). Dev fallback: local MinIO for parity
          testing. The SDK speaks plain S3, so swapping endpoints
@@ -38,7 +40,7 @@
          cost+salt in the output string so we only need one column. -->
     <PackageReference Include="BCrypt.Net-Next" Version="4.0.3" />
     <PackageReference Include="Serilog.AspNetCore" Version="9.0.0" />
-    <PackageReference Include="Swashbuckle.AspNetCore" Version="7.3.1" />
+    <PackageReference Include="Swashbuckle.AspNetCore" Version="10.2.3" />
     <!-- Server-side crop/resize for img.* CDN transforms (?cropSquare=1&width=N
          on profile thumbnails). The 2020 client treats this as part of the
          image CDN contract — it uploads a full-frame capture and expects the

DorkNet.Server/Program.cs

@@ -1,6 +1,7 @@
 using Microsoft.AspNetCore.Authentication.JwtBearer;
 using Microsoft.EntityFrameworkCore;
 using Microsoft.IdentityModel.Tokens;
+using DorkNet.Server.Auth;
 using DorkNet.Server.Data;
 using DorkNet.Server.Services;
 using Serilog;
@@ -105,7 +106,8 @@ var domainPort =
 var singleOriginBaseUrl =
     builder.Configuration["Domain:SingleOriginBaseUrl"]
     ?? Environment.GetEnvironmentVariable("DORKNET_SINGLE_ORIGIN_BASE_URL");
-builder.Services.AddSingleton(new DomainConfig(apex, domainScheme, domainPort, singleOriginBaseUrl));
+var domainConfig = new DomainConfig(apex, domainScheme, domainPort, singleOriginBaseUrl);
+builder.Services.AddSingleton(domainConfig);
 builder.Services.Configure<Microsoft.AspNetCore.HostFiltering.HostFilteringOptions>(opt =>
 {
     opt.AllowedHosts = new[] { apex, $"*.{apex}", "localhost", "127.0.0.1" };
@@ -214,12 +216,9 @@ static string NormalizeRedisConn(string raw)
 // kept for backward compat with older Coolify configs (will warn at
 // startup, can be removed once everyone has migrated). AuthService
 // has the matching fallback so signing + validation use the same key.
-var jwtSecret = Environment.GetEnvironmentVariable("DORKNET_JWT_SECRET")
-    ?? Environment.GetEnvironmentVariable("RECNET_JWT_SECRET")
-    ?? builder.Configuration["Jwt:Secret"]
-    ?? throw new InvalidOperationException(
-        "JWT secret not configured. Set the DORKNET_JWT_SECRET env var or " +
-        "add `Jwt:Secret` to appsettings.Local.json.");
+var signingKeyProvider = new IdentityServerSigningKeyProvider(builder.Configuration);
+builder.Services.AddSingleton(signingKeyProvider);
+builder.Services.AddRecRoomIdentityServer(builder.Configuration, domainConfig, signingKeyProvider);
 
 builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
     .AddJwtBearer(opt =>
@@ -227,9 +226,9 @@ builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
         opt.TokenValidationParameters = new TokenValidationParameters
         {
             ValidateIssuerSigningKey = true,
-            IssuerSigningKey = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(jwtSecret)),
+            IssuerSigningKeys = signingKeyProvider.ValidationKeys,
             ValidateIssuer = true,
-            ValidIssuer = "https://api.rec.net/",
+            ValidIssuers = new[] { domainConfig.AuthIssuer, AuthService.LegacyIssuer },
             ValidateAudience = false,
             ClockSkew = TimeSpan.Zero,
         };
@@ -251,6 +250,12 @@ builder.Services.AddAuthentication(JwtBearerDefaults.AuthenticationScheme)
                 var path = ctx.HttpContext.Request.Path;
                 if (!string.IsNullOrEmpty(accessToken) && path.StartsWithSegments("/hub"))
                     ctx.Token = accessToken;
+                if (string.IsNullOrEmpty(ctx.Token) &&
+                    ctx.Request.Cookies.TryGetValue(AuthService.AccessCookieName, out var cookieToken) &&
+                    !string.IsNullOrWhiteSpace(cookieToken))
+                {
+                    ctx.Token = cookieToken;
+                }
                 return Task.CompletedTask;
             },
         };
@@ -886,6 +891,11 @@ using (var scope = app.Services.CreateScope())
     // that's already there (so spent-down accounts aren't refilled).
     await playerService.BackfillStarterWalletsAsync();
 
+    // 2018 client: complete any account missing birthday/email/password so the
+    // (screen-mode-broken) signup step flow never appears. See
+    // PlayerService.ApplyRegistrationDefaults.
+    await playerService.BackfillAccountCompletionAsync();
+
     // Backfill the per-player dorm room + DormStateEntity for any
     // legacy account that signed in via a path that didn't run
     // EnsurePersonalDormAsync (early-bird signups, manual SQL
@@ -1151,6 +1161,9 @@ app.Use(async (ctx, next) =>
 // no DB hit beyond the (small) IpBans lookup.
 app.UseMiddleware<DorkNet.Server.Auth.IpBanCheckMiddleware>();
 
+app.UseMiddleware<IdentityServerGameTokenRequestMiddleware>();
+app.UseIdentityServer();
+
 app.UseAuthentication();
 app.UseAuthorization();
 // Sits between auth and the controllers — by this point ctx.User has the

DorkNet.Server/Services/AuthService.cs

@@ -3,12 +3,16 @@ using Microsoft.IdentityModel.Tokens;
 using System.IdentityModel.Tokens.Jwt;
 using System.Security.Claims;
 using System.Text;
+using DorkNet.Server.Auth;
 using DorkNet.Server.Data;
 
 namespace DorkNet.Server.Services;
 
-public class AuthService(IConfiguration config, DorkNetDbContext db)
+public class AuthService(IConfiguration config, DorkNetDbContext db, DomainConfig domain, IdentityServerSigningKeyProvider signingKeyProvider)
 {
+    public const string AccessCookieName = "dorknet_access_token";
+    public const string LegacyIssuer = "https://api.rec.net/";
+
     // Resolution order MUST match Program.cs's JwtBearer validator setup —
     // env var first, config key second — otherwise tokens are signed with
     // one secret and validated against another and every authenticated
@@ -38,38 +42,17 @@ public class AuthService(IConfiguration config, DorkNetDbContext db)
     private string CreateJwt(long playerId, TimeSpan lifetime, string tokenType)
     {
         var handler = new JwtSecurityTokenHandler();
-        var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(SecretKey));
-
-        // Look up dev/admin flags so the JWT carries a "developer" role
-        // claim for accounts that should see the in-game debug button.
-        // The watch's Login.SetAccessToken parses the access_token's
-        // <c>role</c> claim — either a single string or a list — and
-        // calls <c>HasRole("developer", token)</c>; that result drives
-        // <c>Accounts.SetLocalAccountIsDev</c> and ultimately
-        // <c>SessionManager.IsDeveloper</c>, which the watch UI checks
-        // when deciding whether to show the dev console toggle.
-        var isDev = db.Players
-            .Where(p => p.Id == playerId)
-            .Select(p => (bool?)(p.IsDeveloper || p.IsAdmin))
-            .FirstOrDefault() ?? false;
-
-        var claims = new List<Claim>
-        {
-            new(ClaimTypes.NameIdentifier, playerId.ToString()),
-            new(ClaimTypes.Role, "gameClient"),
-            new("token_type", tokenType),
-        };
-        // Multiple Role claims become a JSON array on the wire — the
-        // watch's HasRole helper handles both string and List<string>
-        // forms.
-        if (isDev) claims.Add(new Claim(ClaimTypes.Role, "developer"));
+        var claims = RecRoomIdentityClaims.CreateAsync(db, playerId)
+            .GetAwaiter()
+            .GetResult();
+        claims.Add(new Claim("token_type", tokenType));
 
         var descriptor = new SecurityTokenDescriptor
         {
             Subject = new ClaimsIdentity(claims),
             Expires = DateTime.UtcNow.Add(lifetime),
-            Issuer = "https://api.rec.net/",
-            SigningCredentials = new SigningCredentials(key, SecurityAlgorithms.HmacSha256),
+            Issuer = domain.AuthIssuer,
+            SigningCredentials = new SigningCredentials(signingKeyProvider.SigningKey, SecurityAlgorithms.RsaSha256),
         };
 
         return handler.WriteToken(handler.CreateJwtSecurityToken(descriptor));
@@ -80,19 +63,22 @@ public class AuthService(IConfiguration config, DorkNetDbContext db)
         try
         {
             var handler = new JwtSecurityTokenHandler();
-            var key = new SymmetricSecurityKey(Encoding.UTF8.GetBytes(SecretKey));
-
             var principal = handler.ValidateToken(token, new TokenValidationParameters
             {
                 ValidateIssuerSigningKey = true,
-                IssuerSigningKey = key,
+                IssuerSigningKeys = signingKeyProvider.ValidationKeys,
                 ValidateIssuer = true,
-                ValidIssuer = "https://api.rec.net/",
+                ValidIssuers = new[] { domain.AuthIssuer, LegacyIssuer },
                 ValidateAudience = false,
                 ClockSkew = TimeSpan.Zero,
             }, out _);
 
-            var idClaim = principal.FindFirst(ClaimTypes.NameIdentifier)?.Value;
+            var idClaim = principal.FindFirst(ClaimTypes.NameIdentifier)?.Value
+                ?? principal.FindFirst(JwtRegisteredClaimNames.Sub)?.Value
+                ?? principal.FindFirst("sub")?.Value
+                ?? principal.FindFirst("accountId")?.Value
+                ?? principal.FindFirst("account_id")?.Value
+                ?? principal.FindFirst("accountid")?.Value;
             return idClaim is not null ? long.Parse(idClaim) : null;
         }
         catch

DorkNet.Server/Services/ConfigService.cs

@@ -102,7 +102,7 @@ public class ConfigService(IConfiguration config, DomainConfig domain)
         foreach (var (service, sub) in ServiceSubdomains)
         {
             var host = string.IsNullOrEmpty(sub) ? apex : $"{sub}.{apex}";
-            map[service] = $"https://{host}";
+            map[service] = $"https://{host}/";
         }
         return map;
     }
@@ -115,12 +115,21 @@ public class ConfigService(IConfiguration config, DomainConfig domain)
             if (domain.SingleOriginEnabled)
             {
                 var prefix = string.IsNullOrEmpty(sub) ? "www" : sub;
-                map[service] = $"{domain.SingleOriginBaseUrl}/__dn/{prefix}";
+                map[service] = $"{domain.SingleOriginBaseUrl}/__dn/{prefix}/";
                 continue;
             }
             var host = string.IsNullOrEmpty(sub) ? domain.Apex : domain.Sub(sub);
-            map[service] = domain.Url(host);
+            map[service] = EnsureTrailingSlash(domain.Url(host));
         }
         return map;
     }
+
+    // The 2018.06 client builds every API URL by RAW string concat —
+    // new Uri(string.Concat(serviceBase, "api/config/v2")) — so each service
+    // base MUST be an absolute origin ending in '/', else the host glues to
+    // the path ("https://api.apexapi/config/v2") and every call 404s. The
+    // 2020 client runs EnsureEndsWith('/') on these values itself, so the
+    // trailing slash is idempotent there — safe for both eras.
+    private static string EnsureTrailingSlash(string url)
+        => url.EndsWith('/') ? url : url + "/";
 }

DorkNet.Server/Services/DomainConfig.cs

@@ -27,6 +27,7 @@ public sealed class DomainConfig
     }
 
     public string Sub(string prefix) => $"{prefix}.{Apex}";
+    public string AuthIssuer => SubUrl("auth");
     public string Url(string host) => Port is null ? $"{Scheme}://{host}" : $"{Scheme}://{host}:{Port}";
     public string SubUrl(string prefix) => Url(Sub(prefix));
     public static bool MatchesSubdomain(string host, string prefix)

DorkNet.Server/Services/PlayerService.cs

@@ -517,6 +517,7 @@ public class PlayerService(DorkNetDbContext db, RoomService rooms, ILogger<Playe
             HairColor = StarterHairColor,
             SkinColor = StarterSkinColor,
         };
+        ApplyRegistrationDefaults(player);
 
         db.Players.Add(player);
         await db.SaveChangesAsync();
@@ -596,6 +597,7 @@ public class PlayerService(DorkNetDbContext db, RoomService rooms, ILogger<Playe
             HairColor = StarterHairColor,
             SkinColor = StarterSkinColor,
         };
+        ApplyRegistrationDefaults(player);
         db.Players.Add(player);
         await db.SaveChangesAsync();
 
@@ -629,9 +631,55 @@ public class PlayerService(DorkNetDbContext db, RoomService rooms, ILogger<Playe
         return true;
     }
 
+    // 2018 client runs a signup step-flow (video→birthday→email→complete) for
+    // accounts missing these — and its screen-mode UI is unusable, so accounts
+    // are born COMPLETE: an adult birthday, a synthetic email, and a default
+    // password ("dorknet"). RegistrationStatus is reported as complete(10) in
+    // the Player2018 wire shape.
+    private static readonly DateTime DefaultBirthday = new(1990, 1, 1, 0, 0, 0, DateTimeKind.Utc);
+    private static readonly string DefaultPasswordHash = BCrypt.Net.BCrypt.HashPassword("dorknet", 11);
+
+    private static void ApplyRegistrationDefaults(PlayerEntity p)
+    {
+        p.Birthday ??= DefaultBirthday;
+        if (string.IsNullOrEmpty(p.Email))
+            p.Email = $"{(string.IsNullOrEmpty(p.Username) ? "player" : p.Username).ToLowerInvariant()}@dorknet.local";
+        if (string.IsNullOrEmpty(p.PasswordHash)) p.PasswordHash = DefaultPasswordHash;
+        // 2018 SCREEN MODE is a developer-gated feature: SessionManager.BIAOMKDOLDL
+        // (which keeps screen mode enabled post-login) = account.Developer
+        // (RecNet EEBPLECPEGD.Deserialize "Developer" key). Without it the client
+        // demands a headset (vr_device_required) after login. Grant it so the
+        // screen-mode (non-VR) client is playable on this local-test branch.
+        p.IsDeveloper = true;
+    }
+
+    /// <summary>Complete any account missing birthday/email/password so the 2018
+    /// client never enters its (broken-in-screen-mode) signup step flow. Runs at
+    /// startup like the other backfills.</summary>
+    public async Task BackfillAccountCompletionAsync()
+    {
+        var incomplete = await db.Players
+            .Where(p => p.Birthday == null || p.Email == null || p.PasswordHash == null || !p.IsDeveloper)
+            .ToListAsync();
+        if (incomplete.Count == 0) return;
+        foreach (var p in incomplete) ApplyRegistrationDefaults(p);
+        await db.SaveChangesAsync();
+        logger.LogInformation(
+            "[backfill] completed registration (birthday/email/password) for {N} account(s)", incomplete.Count);
+    }
+
     public async Task<PlayerEntity?> GetByIdAsync(long id) =>
         await db.Players.Include(p => p.Avatar).FirstOrDefaultAsync(p => p.Id == id);
 
+    /// <summary>Bulk profile fetch for the 2018 client's batch resolvers
+    /// (api/players/v1/list, presence). Single query; order is not guaranteed.</summary>
+    public async Task<List<PlayerEntity>> GetByIdsAsync(IEnumerable<long> ids)
+    {
+        var idList = ids.Distinct().ToList();
+        if (idList.Count == 0) return [];
+        return await db.Players.Where(p => idList.Contains(p.Id)).ToListAsync();
+    }
+
     /// <summary>
     /// Stamp the calling platform onto an existing account so the
     /// next boot's <c>/cachedlogin/forplatformid</c> query finds it.

DorkNet.Server/Services/RoomService.cs

@@ -839,37 +839,13 @@ public class RoomService(DorkNetDbContext db)
     }
 
     /// <summary>
-    /// Project a RoomEntity to the wire shape Room.Deserialize at RVA
-    /// 0x114E430 expects. Required keys (PascalCase):
-    ///   RoomId, Name, Description, CreatorPlayerId, ImageName, State,
-    ///   Accessibility, SupportsLevelVoting, IsAGRoom, CloningAllowed,
-    ///   SupportsScreens, SupportsWalkVR, SupportsTeleportVR,
-    ///   AllowsJuniors, RoomWarningMask, CustomRoomWarning
-    /// Optional: IsDormRoom, SupportsVRLow, SupportsMobile, DisableMicAutoMute.
+    /// Project a RoomEntity to the flat June-2018 wire room (RecNet
+    /// Room.Deserialize, RecNet.cs:78244). This branch is 2018-only, so every
+    /// room-returning endpoint emits this shape via the shared mapper — the
+    /// 2020 RoomDetails/Scenes shape crashes the 2018 deserializer. See
+    /// <see cref="Compat2018.Room2018Mapper"/>.
     /// </summary>
-    public static object ToWireRoom(RoomEntity r) => new
-    {
-        RoomId = r.Id,
-        Name = r.Name,
-        Description = r.Description,
-        CreatorPlayerId = r.CreatorPlayerId,
-        ImageName = r.ImageName,
-        State = r.State,
-        Accessibility = r.Accessibility,
-        SupportsLevelVoting = r.SupportsLevelVoting,
-        IsAGRoom = r.IsAGRoom,
-        IsDormRoom = r.IsDormRoom,
-        CloningAllowed = r.CloningAllowed,
-        SupportsVRLow = r.SupportsVRLow,
-        SupportsMobile = r.SupportsMobile,
-        SupportsScreens = r.SupportsScreens,
-        SupportsWalkVR = r.SupportsWalkVR,
-        SupportsTeleportVR = r.SupportsTeleportVR,
-        AllowsJuniors = r.AllowsJuniors,
-        RoomWarningMask = r.RoomWarningMask,
-        CustomRoomWarning = r.CustomRoomWarning,
-        DisableMicAutoMute = r.DisableMicAutoMute,
-    };
+    public static object ToWireRoom(RoomEntity r) => Compat2018.Room2018Mapper.From(r);
 
     /// <summary>
     /// Idempotent admin overrides applied AFTER SeedAsync. Keeps the seed

DorkNet.Server/admin-ui/src/pages/IdentityServer.tsx

@@ -0,0 +1,209 @@
+import { useEffect, useState } from 'react';
+import { get } from '../lib/api';
+import { RefreshCw } from '../components/Icons';
+
+interface IdentityServerSettings {
+  issuer: string;
+  discoveryUrl: string;
+  tokenEndpoint: string;
+  userInfoEndpoint: string;
+  client: {
+    clientId: string;
+    clientName: string;
+    allowedGrantTypes: string[];
+    allowedScopes: string[];
+    allowOfflineAccess: boolean;
+    accessTokenLifetime: number;
+    absoluteRefreshTokenLifetime: number;
+    slidingRefreshTokenLifetime: number;
+    refreshTokenUsage: string;
+    refreshTokenExpiration: string;
+  };
+  signing: {
+    certificateSource: string;
+    loadedFromBase64: boolean;
+    certificatePath: string;
+    certificateExists: boolean;
+    thumbprint: string;
+    notBeforeUtc: string;
+    notAfterUtc: string;
+    algorithm: string;
+  };
+  persistedGrants: {
+    store: string;
+    warning: string;
+  };
+}
+
+export function IdentityServer() {
+  const [settings, setSettings] = useState<IdentityServerSettings | null>(null);
+  const [err, setErr] = useState<string | null>(null);
+  const [busy, setBusy] = useState(false);
+
+  const load = async () => {
+    setBusy(true);
+    try {
+      const data = await get<IdentityServerSettings>('/identityserver');
+      setSettings(data);
+      setErr(null);
+    } catch (e) {
+      setErr((e as Error).message);
+    } finally {
+      setBusy(false);
+    }
+  };
+
+  useEffect(() => { void load(); }, []);
+
+  return (
+    <div>
+      <div className="mb-3 flex justify-end">
+        <button onClick={load} className="btn-secondary text-xs" disabled={busy}>
+          <RefreshCw className={busy ? 'animate-spin' : ''} />
+          Refresh
+        </button>
+      </div>
+
+      {err && (
+        <div className="card border-danger/30 bg-danger/5 px-4 py-3 text-sm text-danger mb-4">{err}</div>
+      )}
+
+      {!settings && !err && (
+        <div className="card !p-6 text-center text-xs text-ink-400">Loading...</div>
+      )}
+
+      {settings && (
+        <div className="grid gap-5 xl:grid-cols-[minmax(0,1fr)_360px]">
+          <div className="space-y-5">
+            <div className="card !p-5">
+              <div className="flex flex-wrap items-start justify-between gap-4">
+                <div>
+                  <h2 className="text-sm font-semibold text-ink-50">IdentityServer</h2>
+                  <p className="mt-1 break-all font-mono text-xs text-ink-300">{settings.issuer}</p>
+                </div>
+                <div className="flex flex-wrap gap-2 text-xs">
+                  <StatusBadge ok={settings.signing.certificateExists} on="Signing key" off="Missing key" />
+                </div>
+              </div>
+
+              <div className="mt-5 grid gap-3 md:grid-cols-3">
+                <Endpoint label="Discovery" value={settings.discoveryUrl} />
+                <Endpoint label="Token" value={settings.tokenEndpoint} />
+                <Endpoint label="UserInfo" value={settings.userInfoEndpoint} />
+              </div>
+            </div>
+
+            <div className="card !p-5">
+              <div className="mb-4 flex flex-wrap items-center justify-between gap-3">
+                <div>
+                  <h2 className="text-sm font-semibold text-ink-50">Client</h2>
+                  <p className="mt-1 font-mono text-xs text-ink-400">{settings.client.clientId}</p>
+                </div>
+                <span className={settings.client.allowOfflineAccess ? 'badge-online' : 'badge-neutral'}>
+                  Offline access {settings.client.allowOfflineAccess ? 'on' : 'off'}
+                </span>
+              </div>
+
+              <div className="grid gap-4 lg:grid-cols-2">
+                <ChipList title="Grant types" values={settings.client.allowedGrantTypes} />
+                <ChipList title="Scopes" values={settings.client.allowedScopes} />
+              </div>
+
+              <div className="mt-5 grid gap-3 sm:grid-cols-3">
+                <Metric label="Access token" value={duration(settings.client.accessTokenLifetime)} />
+                <Metric label="Refresh token" value={duration(settings.client.absoluteRefreshTokenLifetime)} />
+                <Metric label="Refresh mode" value={`${settings.client.refreshTokenUsage} / ${settings.client.refreshTokenExpiration}`} />
+              </div>
+            </div>
+
+          </div>
+
+          <div className="space-y-5">
+            <div className="card !p-5">
+              <h2 className="text-sm font-semibold text-ink-50">Signing certificate</h2>
+              <div className="mt-4 space-y-3">
+                <Detail label="Source" value={settings.signing.certificateSource} mono />
+                {!settings.signing.loadedFromBase64 && (
+                  <Detail label="Path" value={settings.signing.certificatePath} mono />
+                )}
+                <Detail label="Thumbprint" value={settings.signing.thumbprint} mono />
+                <Detail label="Algorithm" value={settings.signing.algorithm} mono />
+                <Detail label="Valid from" value={formatDate(settings.signing.notBeforeUtc)} />
+                <Detail label="Valid until" value={formatDate(settings.signing.notAfterUtc)} />
+              </div>
+            </div>
+
+            <div className="card !p-5">
+              <h2 className="text-sm font-semibold text-ink-50">Operational store</h2>
+              <div className="mt-3 flex items-center justify-between gap-3">
+                <span className="text-xs text-ink-400">Persisted grants</span>
+                <span className="badge-junior">{settings.persistedGrants.store}</span>
+              </div>
+              <p className="mt-4 text-xs leading-5 text-ink-400">{settings.persistedGrants.warning}</p>
+            </div>
+          </div>
+        </div>
+      )}
+    </div>
+  );
+}
+
+function Endpoint({ label, value }: { label: string; value: string }) {
+  return (
+    <div className="rounded-lg border border-ink-800 bg-ink-950/40 p-3">
+      <div className="label">{label}</div>
+      <div className="mt-2 break-all font-mono text-xs text-ink-100">{value}</div>
+    </div>
+  );
+}
+
+function ChipList({ title, values }: { title: string; values: string[] }) {
+  return (
+    <div className="rounded-lg border border-ink-800 bg-ink-950/30 p-4">
+      <h3 className="text-xs font-semibold uppercase text-ink-400">{title}</h3>
+      <div className="mt-3 flex flex-wrap gap-2">
+        {values.map((value) => (
+          <span key={value} className="badge-neutral font-mono normal-case tracking-normal">{value}</span>
+        ))}
+      </div>
+    </div>
+  );
+}
+
+function Metric({ label, value }: { label: string; value: string }) {
+  return (
+    <div className="rounded-lg border border-ink-800 bg-ink-950/30 p-3">
+      <div className="text-[11px] uppercase text-ink-500">{label}</div>
+      <div className="mt-1 text-sm font-semibold text-ink-50">{value}</div>
+    </div>
+  );
+}
+
+function Detail({ label, value, mono }: { label: string; value: string; mono?: boolean }) {
+  return (
+    <div>
+      <div className="label">{label}</div>
+      <div className={(mono ? 'font-mono ' : '') + 'mt-1 break-all text-xs text-ink-100'}>{value}</div>
+    </div>
+  );
+}
+
+function StatusBadge({ ok, on, off }: { ok: boolean; on: string; off: string }) {
+  return <span className={ok ? 'badge-online' : 'badge-junior'}>{ok ? on : off}</span>;
+}
+
+function formatDate(value: string): string {
+  const date = new Date(value);
+  return Number.isNaN(date.getTime()) ? value : date.toLocaleString();
+}
+
+function duration(seconds: number): string {
+  if (!Number.isFinite(seconds) || seconds <= 0) return '0s';
+  const days = Math.floor(seconds / 86400);
+  const hours = Math.floor((seconds % 86400) / 3600);
+  const minutes = Math.floor((seconds % 3600) / 60);
+  if (days > 0) return `${days}d ${hours}h`;
+  if (hours > 0) return `${hours}h ${minutes}m`;
+  if (minutes > 0) return `${minutes}m`;
+  return `${seconds}s`;
+}

DorkNet.Server/admin-ui/src/pages/SettingsHome.tsx

@@ -1,4 +1,5 @@
 import { Settings } from './Settings';
+import { IdentityServer } from './IdentityServer';
 import { SignupCodes } from './SignupCodes';
 import { PageHeader } from '../components/PageHeader';
 import { Tabs, useTabParam } from '../components/Tabs';
@@ -7,19 +8,21 @@ import { Tabs, useTabParam } from '../components/Tabs';
 // invite codes (an access-control setting in its own right). Old
 // /signup-codes route redirects here with ?tab=signup.
 export function SettingsHome() {
-  const [tab, setTab] = useTabParam<'server' | 'signup'>('server', ['server', 'signup']);
+  const [tab, setTab] = useTabParam<'server' | 'identity' | 'signup'>('server', ['server', 'identity', 'signup']);
   return (
     <div>
-      <PageHeader title="Settings" blurb="Runtime server toggles and single-use signup invite codes." />
+      <PageHeader title="Settings" blurb="Runtime server toggles, authentication, and single-use signup invite codes." />
       <Tabs
         tabs={[
           { key: 'server', label: 'Server' },
+          { key: 'identity', label: 'IdentityServer' },
           { key: 'signup', label: 'Signup codes' },
         ]}
         active={tab}
         onChange={setTab}
       />
       {tab === 'server' && <Settings embedded />}
+      {tab === 'identity' && <IdentityServer />}
       {tab === 'signup' && <SignupCodes embedded />}
     </div>
   );

DorkNet.Server/appsettings.Local.json

@@ -0,0 +1,22 @@
+{
+  "Jwt": {
+    "Secret": "dorknet-local-dev-secret-please-change-0123456789abcdef"
+  },
+  "Domain": {
+    "Apex": "localhost",
+    "Scheme": "http",
+    "SingleOriginBaseUrl": "http://127.0.0.1:5005"
+  },
+  "Database": {
+    "Provider": "sqlite"
+  },
+  "Photon": {
+    "AppId": "",
+    "VoiceAppId": "",
+    "CloudRegion": "us",
+    "RequireCustomAuth": false
+  },
+  "Server": {
+    "MOTD": "DorkNet 2018 local test server"
+  }
+}

README.md

@@ -72,13 +72,17 @@ cd DorkNet
 | `ConnectionStrings:Redis` | `ConnectionStrings__Redis` | no | enables SignalR backplane |
 | `Domain:Apex` | `DORKNET_DOMAIN` | no | defaults to `localhost`; set for production |
 
+`/connect/token` issues access and refresh tokens with the configured
+auth host as the issuer. Set `DORKNET_DOMAIN` for production so OpenID
+discovery and JWT validation agree on `https://auth.<domain>`.
+
 **4. Boot:**
 
 ```pwsh
 dotnet run --project DorkNet.Server
 ```
 
-First boot creates `bin/Debug/net9.0/data/dorknet.db`, applies all EF
+First boot creates `bin/Debug/net10.0/data/dorknet.db`, applies all EF
 migrations under `DorkNet.Server/Migrations/`, seeds canonical rooms +
 store catalog, and starts listening. You should see `Application
 started.` in the log; `curl http://localhost:8080/healthz` returns 200.