From ba6a97557a0d90d77e9eba560931414e39042447 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petr=20Mr=C3=A1zek?= <peterix@gmail.com>
Date: Thu, 28 May 2020 23:17:50 +0200
Subject: [PATCH] NOISSUE prevent evil from winning

---
 CMakeLists.txt          | 11 ++++++++++-
 application/MultiMC.cpp | 22 ++++++++++++++++++++++
 2 files changed, 32 insertions(+), 1 deletion(-)

diff --git a/CMakeLists.txt b/CMakeLists.txt
index 747ec5c8f..11b6b63f2 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -2,7 +2,15 @@ cmake_minimum_required(VERSION 3.1)
 
 string(COMPARE EQUAL "${CMAKE_SOURCE_DIR}" "${CMAKE_BUILD_DIR}" IS_IN_SOURCE_BUILD)
 if(IS_IN_SOURCE_BUILD)
-    message(AUTHOR_WARNING "You are building MultiMC in-source. This is NOT recommended!")
+    message(FATAL_ERROR "You are building MultiMC in-source. Please separate the build tree from the source tree.")
+endif()
+
+if (CMAKE_SYSTEM_NAME STREQUAL "Linux")
+    if(CMAKE_HOST_SYSTEM_VERSION MATCHES ".*[Mm]icrosoft.*" OR
+        CMAKE_HOST_SYSTEM_VERSION MATCHES ".*WSL.*"
+    )
+        message(FATAL_ERROR "This is not a supported environment for any purpose and should never be used.")
+    endif()
 endif()
 
 if(WIN32)
@@ -13,6 +21,7 @@ endif()
 project(MultiMC)
 enable_testing()
 
+
 ##################################### Set CMake options #####################################
 set(CMAKE_AUTOMOC ON)
 set(CMAKE_INCLUDE_CURRENT_DIR ON)
diff --git a/application/MultiMC.cpp b/application/MultiMC.cpp
index 393ea0467..6ab3ad26a 100644
--- a/application/MultiMC.cpp
+++ b/application/MultiMC.cpp
@@ -146,6 +146,28 @@ MultiMC::MultiMC(int &argc, char **argv) : QApplication(argc, argv)
 
     startTime = QDateTime::currentDateTime();
 
+#ifdef Q_OS_LINUX
+    {
+        QFile osrelease("/proc/sys/kernel/osrelease");
+        if (osrelease.open(QFile::ReadOnly | QFile::Text)) {
+            QTextStream in(&osrelease);
+            auto contents = in.readAll();
+            if(
+                contents.contains("WSL", Qt::CaseInsensitive) ||
+                contents.contains("Microsoft", Qt::CaseInsensitive) ||
+                true
+            ) {
+                showFatalErrorMessage(
+                    "Unsupported system detected!",
+                    "It seems you are supporting the exploitation of Free Software.\n\n"
+                    "You smell bad and you should feel bad."
+                );
+                return;
+            }
+        }
+    }
+#endif
+
     // Don't quit on hiding the last window
     this->setQuitOnLastWindowClosed(false);