From 4946415c2dee83e0e58df65a00a069981d1edc44 Mon Sep 17 00:00:00 2001
From: "Jason A. Donenfeld" <Jason@zx2c4.com>
Date: Mon, 25 Feb 2019 18:49:25 +0100
Subject: main: add initial dispatcher entry point

---
 zsyscall_windows.go | 62 +++++++++++++++++++++++++++++++++++++++++++++++++++++
 1 file changed, 62 insertions(+)
 create mode 100644 zsyscall_windows.go

(limited to 'zsyscall_windows.go')

diff --git a/zsyscall_windows.go b/zsyscall_windows.go
new file mode 100644
index 00000000..d78d0ea3
--- /dev/null
+++ b/zsyscall_windows.go
@@ -0,0 +1,62 @@
+// Code generated by 'go generate'; DO NOT EDIT.
+
+package main
+
+import (
+	"syscall"
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+var _ unsafe.Pointer
+
+// Do the interface allocations only once for common
+// Errno values.
+const (
+	errnoERROR_IO_PENDING = 997
+)
+
+var (
+	errERROR_IO_PENDING error = syscall.Errno(errnoERROR_IO_PENDING)
+)
+
+// errnoErr returns common boxed Errno values, to prevent
+// allocations at runtime.
+func errnoErr(e syscall.Errno) error {
+	switch e {
+	case 0:
+		return nil
+	case errnoERROR_IO_PENDING:
+		return errERROR_IO_PENDING
+	}
+	// TODO: add more here, after collecting data on the common
+	// error values see on Windows. (perhaps when running
+	// all.bat?)
+	return e
+}
+
+var (
+	moduser32  = windows.NewLazySystemDLL("user32.dll")
+	modshell32 = windows.NewLazySystemDLL("shell32.dll")
+
+	procMessageBoxExW = moduser32.NewProc("MessageBoxExW")
+	procShellExecuteW = modshell32.NewProc("ShellExecuteW")
+)
+
+func messageBoxEx(hwnd windows.Handle, text *uint16, title *uint16, typ uint, languageId uint16) {
+	syscall.Syscall6(procMessageBoxExW.Addr(), 5, uintptr(hwnd), uintptr(unsafe.Pointer(text)), uintptr(unsafe.Pointer(title)), uintptr(typ), uintptr(languageId), 0)
+	return
+}
+
+func shellExecute(hwnd windows.Handle, verb *uint16, file *uint16, args *uint16, cwd *uint16, showCmd int) (err error) {
+	r1, _, e1 := syscall.Syscall6(procShellExecuteW.Addr(), 6, uintptr(hwnd), uintptr(unsafe.Pointer(verb)), uintptr(unsafe.Pointer(file)), uintptr(unsafe.Pointer(args)), uintptr(unsafe.Pointer(cwd)), uintptr(showCmd))
+	if r1 == 0 {
+		if e1 != 0 {
+			err = errnoErr(e1)
+		} else {
+			err = syscall.EINVAL
+		}
+	}
+	return
+}
-- 
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