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https://github.com/opentofu/opentofu.git
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1e2da4f776
This new implementation is not yet used, but should eventually replace the technique of composing together various types from the svchost/auth package, since our requirements are now complex enough that they're more straightforward to express in direct code within a single type than as a composition of the building blocks in the svchost/auth package.
72 lines
1.7 KiB
Go
72 lines
1.7 KiB
Go
// +build windows
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package cliconfig
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import (
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"os"
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"path/filepath"
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"syscall"
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"unsafe"
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"golang.org/x/sys/windows"
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)
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var (
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shell = syscall.MustLoadDLL("Shell32.dll")
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getFolderPath = shell.MustFindProc("SHGetFolderPathW")
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)
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const CSIDL_APPDATA = 26
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func configFile() (string, error) {
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dir, err := homeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(dir, "terraform.rc"), nil
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}
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func configDir() (string, error) {
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dir, err := homeDir()
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if err != nil {
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return "", err
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}
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return filepath.Join(dir, "terraform.d"), nil
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}
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func homeDir() (string, error) {
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b := make([]uint16, syscall.MAX_PATH)
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// See: http://msdn.microsoft.com/en-us/library/windows/desktop/bb762181(v=vs.85).aspx
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r, _, err := getFolderPath.Call(0, CSIDL_APPDATA, 0, 0, uintptr(unsafe.Pointer(&b[0])))
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if uint32(r) != 0 {
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return "", err
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}
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return syscall.UTF16ToString(b), nil
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}
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func replaceFileAtomic(source, destination string) error {
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// On Windows, renaming one file over another is not atomic and certain
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// error conditions can result in having only the source file and nothing
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// at the destination file. Instead, we need to call into the MoveFileEx
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// Windows API function.
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srcPtr, err := syscall.UTF16PtrFromString(source)
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if err != nil {
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return &os.LinkError{"replace", source, destination, err}
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}
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destPtr, err := syscall.UTF16PtrFromString(destination)
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if err != nil {
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return &os.LinkError{"replace", source, destination, err}
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}
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flags := uint32(windows.MOVEFILE_REPLACE_EXISTING | windows.MOVEFILE_WRITE_THROUGH)
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err = windows.MoveFileEx(srcPtr, destPtr, flags)
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if err != nil {
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return &os.LinkError{"replace", source, destination, err}
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}
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return nil
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}
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