From ee2270c55a987452b041b38db03e7c925aa294c4 Mon Sep 17 00:00:00 2001
From: jvyden <jvyden@jvyden.xyz>
Date: Wed, 24 Apr 2024 14:48:48 -0400
Subject: [PATCH] Revert "PS4 OAuth support"

---
 .../Authentication/TokenPlatform.cs           |  1 -
 .../Game/Handshake/AuthenticationEndpoints.cs | 56 ++++---------------
 2 files changed, 11 insertions(+), 46 deletions(-)

diff --git a/Refresh.GameServer/Authentication/TokenPlatform.cs b/Refresh.GameServer/Authentication/TokenPlatform.cs
index 244645f3..e052eda8 100644
--- a/Refresh.GameServer/Authentication/TokenPlatform.cs
+++ b/Refresh.GameServer/Authentication/TokenPlatform.cs
@@ -7,5 +7,4 @@ public enum TokenPlatform
     Vita = 2,
     Website = 3,
     PSP = 4,
-    PS4 = 5,
 }
\ No newline at end of file
diff --git a/Refresh.GameServer/Endpoints/Game/Handshake/AuthenticationEndpoints.cs b/Refresh.GameServer/Endpoints/Game/Handshake/AuthenticationEndpoints.cs
index 83dd3ddf..ab7604a1 100644
--- a/Refresh.GameServer/Endpoints/Game/Handshake/AuthenticationEndpoints.cs
+++ b/Refresh.GameServer/Endpoints/Game/Handshake/AuthenticationEndpoints.cs
@@ -1,4 +1,3 @@
-using System.Diagnostics;
 using System.Net;
 using System.Xml.Serialization;
 using Bunkum.Core;
@@ -33,50 +32,34 @@ public class AuthenticationEndpoints : EndpointGroup
         IntegrationConfig integrationConfig,
         SmtpService smtpService)
     {
-        bool oauth = context.QueryString.Get("oauth") == "1";
-        
-        string username;
-        Ticket? ticket = null;
-        
+        Ticket ticket;
         try
         {
-            if (!oauth)
-            {
-                ticket = Ticket.ReadFromStream(body);
-                username = ticket.Username;
-            }
-            else
-            {
-                (username, _) = ReadPsnOauthTicket(body);
-            }
+            ticket = Ticket.ReadFromStream(body);
         }
         catch(Exception e)
         {
             context.Logger.LogWarning(BunkumCategory.Authentication, "Could not read ticket: " + e);
             return null;
         }
-
         
-        TokenPlatform? platform = ticket?.IssuerId switch
+        TokenPlatform? platform = ticket.IssuerId switch
         {
             0x100 => TokenPlatform.PS3,
             0x33333333 => TokenPlatform.RPCS3,
             _ => null,
         };
         
-        if (platform == null && oauth)
-            platform = TokenPlatform.PS4;
-        
-        GameUser? user = database.GetUserByUsername(username);
+        GameUser? user = database.GetUserByUsername(ticket.Username);
         if (user == null)
         {
             if (config.RequireGameLoginToRegister)
             {
                 // look for a registration, then use that to create a user
-                QueuedRegistration? registration = database.GetQueuedRegistrationByUsername(username);
+                QueuedRegistration? registration = database.GetQueuedRegistrationByUsername(ticket.Username);
                 if (registration == null)
                 {
-                    context.Logger.LogWarning(BunkumCategory.Authentication, $"Rejecting {username}'s login because there was no matching queued registration");
+                    context.Logger.LogWarning(BunkumCategory.Authentication, $"Rejecting {ticket.Username}'s login because there was no matching queued registration");
                     return null;
                 }
                 
@@ -102,7 +85,7 @@ public class AuthenticationEndpoints : EndpointGroup
             }
             else
             {
-                context.Logger.LogWarning(BunkumCategory.Authentication, $"Rejecting {username}'s login because there was no matching username");
+                context.Logger.LogWarning(BunkumCategory.Authentication, $"Rejecting {ticket.Username}'s login because there was no matching username");
                 return null;
             }
         }
@@ -119,10 +102,8 @@ public class AuthenticationEndpoints : EndpointGroup
         }
 
         bool ticketVerified = false;
-        if (config.UseTicketVerification && !oauth)
+        if (config.UseTicketVerification)
         {
-            Debug.Assert(ticket != null);
-
             if ((platform is TokenPlatform.PS3 or TokenPlatform.Vita or TokenPlatform.PSP && !user.PsnAuthenticationAllowed) ||
                 (platform is TokenPlatform.RPCS3 && !user.RpcnAuthenticationAllowed))
             {
@@ -157,17 +138,14 @@ public class AuthenticationEndpoints : EndpointGroup
         // check if we're connecting from a beta build
         bool parsedBeta = byte.TryParse(context.QueryString.Get("beta"), out byte isBeta);
         if (parsedBeta && isBeta == 1) game = TokenGame.BetaBuild;
-        
-        if (oauth)
-            game ??= TokenGame.LittleBigPlanet3; // ps4 only has LBP3
 
-        game ??= TokenGameUtility.FromTitleId(ticket!.TitleId);
+        game ??= TokenGameUtility.FromTitleId(ticket.TitleId);
 
         if (platform == null)
         {
             database.AddLoginFailNotification("The server could not determine what platform you were trying to connect from.", user);
             context.Logger.LogWarning(BunkumCategory.Authentication, $"Could not determine platform from ticket.\n" +
-                                                                    $"Missing IssuerID: {ticket?.IssuerId}");
+                                                                    $"Missing IssuerID: {ticket.IssuerId}");
             return null;
         }
 
@@ -175,7 +153,7 @@ public class AuthenticationEndpoints : EndpointGroup
         {
             database.AddLoginFailNotification("The server could not determine what game you were trying to connect from.", user);
             context.Logger.LogWarning(BunkumCategory.Authentication, $"Could not determine game from ticket.\n" +
-                                                                    $"Missing TitleID: {ticket?.TitleId}");
+                                                                    $"Missing TitleID: {ticket.TitleId}");
             return null;
         }
 
@@ -203,18 +181,6 @@ public class AuthenticationEndpoints : EndpointGroup
             ServerBrand = $"{config.InstanceName} (Refresh {VersionInformation.Version})",
         };
     }
-    
-    private static (string, int) ReadPsnOauthTicket(Stream body)
-    {
-        // example code: jvyden420:123456
-        using StreamReader reader = new(body);
-        string oauthTicket = reader.ReadToEnd();
-        
-        string username = oauthTicket[..oauthTicket.IndexOf(':')];
-        int code = int.Parse(oauthTicket[(oauthTicket.IndexOf(':') + 1)..]);
-        
-        return (username, code);
-    }
 
     private static bool VerifyTicket(RequestContext context, MemoryStream body, Ticket ticket)
     {