Autoupdate: implement updating bootstrapper utility (#5204)

src/common/updating/dotnet_installation.cpp

@@ -0,0 +1,64 @@
+#include "pch.h"
+
+#include <common/common.h>
+
+#include "http_client.h"
+#include "dotnet_installation.h"
+
+namespace fs = std::filesystem;
+
+namespace updating
+{
+    bool dotnet_is_installed()
+    {
+        auto runtimes = exec_and_read_output(LR"(dotnet --list-runtimes)");
+        if (!runtimes)
+        {
+            return false;
+        }
+        const char DESKTOP_DOTNET_RUNTIME_STRING[] = "Microsoft.WindowsDesktop.App 3.1.";
+        return runtimes->find(DESKTOP_DOTNET_RUNTIME_STRING) != std::string::npos;
+    }
+
+    bool install_dotnet()
+    {
+        const wchar_t DOTNET_DESKTOP_DOWNLOAD_LINK[] = L"https://download.visualstudio.microsoft.com/download/pr/3eb7efa1-96c6-4e97-bb9f-563ecf595f8a/7efd9c1cdd74df8fb0a34c288138a84f/windowsdesktop-runtime-3.1.6-win-x64.exe";
+        const wchar_t DOTNET_DESKTOP_FILENAME[] = L"windowsdesktop-runtime.exe";
+
+        auto dotnet_download_path = fs::temp_directory_path() / DOTNET_DESKTOP_FILENAME;
+        winrt::Windows::Foundation::Uri download_link{ DOTNET_DESKTOP_DOWNLOAD_LINK };
+
+        const size_t max_attempts = 3;
+        bool download_success = false;
+        for (size_t i = 0; i < max_attempts; ++i)
+        {
+            try
+            {
+                http::HttpClient client;
+                client.download(download_link, dotnet_download_path).wait();
+                download_success = true;
+                break;
+            }
+            catch (...)
+            {
+                // couldn't download
+            }
+        }
+        if (!download_success)
+        {
+            return false;
+        }
+        SHELLEXECUTEINFOW sei{ sizeof(sei) };
+        sei.fMask = { SEE_MASK_NOASYNC | SEE_MASK_NOCLOSEPROCESS | SEE_MASK_NO_CONSOLE };
+        sei.lpFile = dotnet_download_path.c_str();
+        sei.nShow = SW_SHOWNORMAL;
+        sei.lpParameters = L"/install /passive";
+        if (ShellExecuteExW(&sei) != TRUE)
+        {
+            return false;
+        }
+        WaitForSingleObject(sei.hProcess, INFINITE);
+        CloseHandle(sei.hProcess);
+        return true;
+    }
+}