From 96df08b6133eab68a4e9b4eb85e5c15b4c7a7532 Mon Sep 17 00:00:00 2001
From: GeckoEidechse <gecko.eidechse+git@pm.me>
Date: Thu, 16 Jun 2022 01:00:38 +0200
Subject: Splice out grapple fixes from #193

---
 NorthstarDedicatedTest/ExploitFixes.cpp | 63 +++++++++------------------------
 1 file changed, 16 insertions(+), 47 deletions(-)

diff --git a/NorthstarDedicatedTest/ExploitFixes.cpp b/NorthstarDedicatedTest/ExploitFixes.cpp
index af7d48ac..79287d4d 100644
--- a/NorthstarDedicatedTest/ExploitFixes.cpp
+++ b/NorthstarDedicatedTest/ExploitFixes.cpp
@@ -35,9 +35,9 @@ struct Vector
 
 	Vector(float x = 0, float y = 0, float z = 0) : x(x), y(y), z(z) {}
 
-	bool IsValid()
+	bool IsInvalid()
 	{
-		return ValidateFloats(x, y, z);
+		return !ValidateFloats(x, y, z);
 	}
 };
 
@@ -260,60 +260,29 @@ KHOOK(ReadUsercmd, ("server.dll", "4C 89 44 24 ? 53 55 56 57"), void, __fastcall
 	std::string BLOCK_PREFIX =
 		"ReadUsercmd (command_number delta: " + std::to_string(cmd->command_number - fromCmd->command_number) + "): ";
 
-	if (cmd->worldViewAngles.IsInvalid())
-	{
-		BLOCKED_INFO("CMD has invalid worldViewAngles");
-		goto INVALID_CMD;
-	}
+#define FORCE_3_VALID(name)                                                                                                                \
+	if (name.IsInvalid())                                                                                                                  \
+	name = {0, 0, 0}
 
-	if (cmd->attackangles.IsInvalid())
-	{
-		BLOCKED_INFO("CMD has invalid attackangles");
-		goto INVALID_CMD;
-	}
+	FORCE_3_VALID(cmd->localViewAngles);
+	FORCE_3_VALID(cmd->cameraAngles);
+	FORCE_3_VALID(cmd->attackangles);
+	FORCE_3_VALID(cmd->worldViewAngles);
 
-	if (cmd->localViewAngles.IsInvalid())
-	{
-		BLOCKED_INFO("CMD has invalid localViewAngles");
-		goto INVALID_CMD;
-	}
-
-	if (cmd->cameraAngles.IsInvalid())
-	{
-		BLOCKED_INFO("CMD has invalid cameraAngles");
-		goto INVALID_CMD;
-	}
+	FORCE_3_VALID(cmd->cameraPos);
+	FORCE_3_VALID(cmd->move);
 
 	if (cmd->frameTime <= 0 || cmd->tick_count == 0 || cmd->command_time <= 0)
 	{
 		BLOCKED_INFO(
 			"Bogus cmd timing (tick_count: " << cmd->tick_count << ", frameTime: " << cmd->frameTime
 											 << ", commandTime : " << cmd->command_time << ")");
-		goto INVALID_CMD; // No simulation of bogus-timed cmds
+		// Fix any gameplay-affecting cmd properties
+		// NOTE: Currently tickcount/frametime is set to 0, this ~shouldn't~ cause any problems
+		cmd->tick_count = cmd->frameTime = 0;
+		cmd->buttons = 0;
+		cmd->meleetarget = 0;
 	}
-
-	if (!cmd->move.IsValid())
-	{
-		BLOCKED_INFO("Invalid move vector");
-		goto INVALID_CMD;
-	}
-
-	if (!cmd->cameraPos.IsValid())
-	{
-		BLOCKED_INFO("Invalid cameraPos"); // IIRC this can crash spectating clients or anyone watching replays
-		goto INVALID_CMD;
-	}
-
-	return;
-INVALID_CMD:
-
-	// Fix any gameplay-affecting cmd properties
-	// NOTE: Currently tickcount/frametime is set to 0, this ~shouldn't~ cause any problems
-	cmd->worldViewAngles = cmd->localViewAngles = cmd->attackangles = cmd->cameraAngles = Angle(0, 0, 0);
-	cmd->tick_count = cmd->frameTime = 0;
-	cmd->move = cmd->cameraPos = Vector(0, 0, 0);
-	cmd->buttons = 0;
-	cmd->meleetarget = 0;
 }
 
 // basically: by default r2 isn't set as a valve mod, meaning that m_bRestrictServerCommands is false
-- 
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