Magic the magic happen

lib/CoreCLR/boot.cpp

@@ -0,0 +1,110 @@
+#define WIN32_LEAN_AND_MEAN
+
+#include <cstdio>
+#include <filesystem>
+#include <Windows.h>
+#include <Shlobj.h>
+#include "CoreCLR.h"
+
+FILE* g_CmdStream;
+void ConsoleSetup(const std::wstring console_name)
+{
+    if (!AllocConsole())
+        return;
+
+    SetConsoleTitleW(console_name.c_str());
+    freopen_s(&g_CmdStream, "CONOUT$", "w", stdout);
+    freopen_s(&g_CmdStream, "CONOUT$", "w", stderr);
+    freopen_s(&g_CmdStream, "CONIN$", "r", stdin);
+}
+
+void ConsoleTeardown()
+{
+    FreeConsole();
+}
+
+int InitializeClrAndGetEntryPoint(
+    std::wstring runtimeconfig_path,
+    std::wstring module_path,
+    std::wstring entrypoint_assembly_name,
+    std::wstring entrypoint_method_name,
+    std::wstring entrypoint_delegate_type_name,
+    void** entrypoint_fn)
+{
+    int result;
+    CoreCLR clr;
+    SetEnvironmentVariable(L"DOTNET_MULTILEVEL_LOOKUP", L"0");
+
+    wchar_t* _appdata;
+    result = SHGetKnownFolderPath(FOLDERID_RoamingAppData, KF_FLAG_DEFAULT, NULL, &_appdata);
+    if (result != 0)
+    {
+        printf("Error: Unable to get RoamingAppData path (err=%d)\n", result);
+        return result;
+    }
+    std::filesystem::path fs_app_data(_appdata);
+    wchar_t* dotnet_path = _wcsdup(fs_app_data.append("XIVLauncher").append("runtime").c_str());
+
+    // =========================================================================== //
+
+    wprintf(L"with dotnet_path: %s\n", dotnet_path);
+    wprintf(L"with config_path: %s\n", runtimeconfig_path.c_str());
+    wprintf(L"with module_path: %s\n", module_path.c_str());
+
+    if (!std::filesystem::exists(dotnet_path))
+    {
+        printf("Error: Unable to find .NET runtime path\n");
+        return 1;
+    }
+
+    get_hostfxr_parameters init_parameters
+    {
+        sizeof(get_hostfxr_parameters),
+        nullptr,
+        dotnet_path,
+    };
+
+    printf("Loading hostfxr... ");
+    if ((result = clr.load_hostfxr(&init_parameters)) != 0)
+    {
+        printf("\nError: Failed to load the `hostfxr` library (err=%d)\n", result);
+        return result;
+    }
+    printf("Done!\n");
+
+    // =========================================================================== //
+
+    hostfxr_initialize_parameters runtime_parameters
+    {
+        sizeof(hostfxr_initialize_parameters),
+        module_path.c_str(),
+        dotnet_path,
+    };
+
+    printf("Loading coreclr... ");;
+    if ((result = clr.load_runtime(runtimeconfig_path, &runtime_parameters)) != 0)
+    {
+        printf("\nError: Failed to load coreclr (err=%d)\n", result);
+        return result;
+    }
+    printf("Done!\n");
+
+    // =========================================================================== //
+
+    printf("Loading module... ");
+    if ((result = clr.load_assembly_and_get_function_pointer(
+        module_path.c_str(),
+        entrypoint_assembly_name.c_str(),
+        entrypoint_method_name.c_str(),
+        entrypoint_delegate_type_name.c_str(),
+        nullptr, entrypoint_fn)) != 0)
+    {
+        printf("\nError: Failed to load module (err=%d)\n", result);
+        return result;
+    }
+    printf("Done!\n");
+
+    // =========================================================================== //
+
+    return 0;
+}