1 files changed, 44 insertions, 0 deletions
diff --git a/lib/getlogin.c b/lib/getlogin.c
new file mode 100644
index 0000000..97b6ed6
--- /dev/null
+++ b/lib/getlogin.c
@@ -0,0 +1,44 @@
+/* Provide a working getlogin for systems which lack it.
+
+   Copyright (C) 2010-2022 Free Software Foundation, Inc.
+
+   This file is free software: you can redistribute it and/or modify
+   it under the terms of the GNU Lesser General Public License as
+   published by the Free Software Foundation; either version 2.1 of the
+   License, or (at your option) any later version.
+
+   This file is distributed in the hope that it will be useful,
+   but WITHOUT ANY WARRANTY; without even the implied warranty of
+   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+   GNU Lesser General Public License for more details.
+
+   You should have received a copy of the GNU Lesser General Public License
+   along with this program.  If not, see <https://www.gnu.org/licenses/>.  */
+
+/* Written by Bruno Haible, 2010.  */
+
+#include <config.h>
+
+/* Specification.  */
+#include <unistd.h>
+
+#if defined _WIN32 && ! defined __CYGWIN__
+# define WIN32_LEAN_AND_MEAN
+# include <windows.h>
+/* Don't assume that UNICODE is not defined.  */
+# undef GetUserName
+# define GetUserName GetUserNameA
+#endif
+
+char *
+getlogin (void)
+{
+#if defined _WIN32 && ! defined __CYGWIN__
+  static char login_name[1024];
+  DWORD sz = sizeof (login_name);
+
+  if (GetUserName (login_name, &sz))
+    return login_name;
+#endif
+  return NULL;
+}