Add SQM User Id to metrics

toolsrc/include/metrics.h

@@ -13,6 +13,7 @@ namespace vcpkg
     void TrackProperty(const std::string& name, const std::string& value);
     void TrackProperty(const std::string& name, const std::wstring& value);
     bool GetCompiledMetricsEnabled();
+    std::wstring GetSQMUser();
 
     void Upload(const std::string& payload);
     void Flush();

toolsrc/src/main.cpp

@@ -197,6 +197,7 @@ int wmain(const int argc, const wchar_t* const* const argv)
     const std::string trimmed_command_line = trim_path_from_command_line(Strings::utf16_to_utf8(GetCommandLineW()));
     TrackProperty("cmdline", trimmed_command_line);
     loadConfig();
+    TrackProperty("sqmuser", GetSQMUser());
 
     const vcpkg_cmd_arguments args = vcpkg_cmd_arguments::create_from_command_line(argc, argv);
 

toolsrc/src/metrics.cpp

@@ -235,6 +235,40 @@ true
         return DISABLE_METRICS == 0;
     }
 
+    std::wstring GetSQMUser()
+    {
+        LONG err = NULL;
+
+        struct RAII_HKEY {
+            HKEY hkey = NULL;
+            ~RAII_HKEY()
+            {
+                if (hkey != NULL)
+                    RegCloseKey(hkey);
+            }
+        } HKCU_SQMClient;
+
+        err = RegOpenKeyExW(HKEY_CURRENT_USER, LR"(Software\Microsoft\SQMClient)", NULL, KEY_READ, &HKCU_SQMClient.hkey);
+        if (err != ERROR_SUCCESS)
+        {
+            return L"{}";
+        }
+
+        std::array<wchar_t,128> buffer;
+        DWORD lType = 0;
+        DWORD dwBufferSize = static_cast<DWORD>(buffer.size() * sizeof(wchar_t));
+        err = RegQueryValueExW(HKCU_SQMClient.hkey, L"UserId", NULL, &lType, reinterpret_cast<LPBYTE>(buffer.data()), &dwBufferSize);
+        if (err == ERROR_SUCCESS && lType == REG_SZ && dwBufferSize >= sizeof(wchar_t))
+        {
+            size_t sz = dwBufferSize / sizeof(wchar_t);
+            if (buffer[sz - 1] == '\0')
+                --sz;
+            return std::wstring(buffer.begin(), buffer.begin() + sz);
+        }
+
+        return L"{}";
+    }
+
     void SetUserInformation(const std::string& user_id, const std::string& first_use_time)
     {
         g_metricmessage.user_id = user_id;