Update dependencies

vendor/github.com/dblohm7/wingoes/util.go

@@ -0,0 +1,80 @@
+// Copyright (c) 2022 Tailscale Inc & AUTHORS. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build windows
+
+package wingoes
+
+import (
+	"unsafe"
+
+	"golang.org/x/sys/windows"
+)
+
+// UserSIDs contains pointers to the SIDs for a user and their primary group.
+type UserSIDs struct {
+	User         *windows.SID
+	PrimaryGroup *windows.SID
+}
+
+// CurrentProcessUserSIDs returns a UserSIDs containing the SIDs of the user
+// and primary group who own the current process.
+func CurrentProcessUserSIDs() (*UserSIDs, error) {
+	token, err := windows.OpenCurrentProcessToken()
+	if err != nil {
+		return nil, err
+	}
+	defer token.Close()
+
+	userInfo, err := token.GetTokenUser()
+	if err != nil {
+		return nil, err
+	}
+
+	primaryGroup, err := token.GetTokenPrimaryGroup()
+	if err != nil {
+		return nil, err
+	}
+
+	// We just want the SIDs, not the rest of the structs that were output.
+	userSid, err := userInfo.User.Sid.Copy()
+	if err != nil {
+		return nil, err
+	}
+
+	primaryGroupSid, err := primaryGroup.PrimaryGroup.Copy()
+	if err != nil {
+		return nil, err
+	}
+
+	return &UserSIDs{User: userSid, PrimaryGroup: primaryGroupSid}, nil
+}
+
+// getTokenInfoVariableLen obtains variable-length token information. Use
+// this function for information classes that output variable-length data.
+func getTokenInfoVariableLen[T any](token windows.Token, infoClass uint32) (*T, error) {
+	var buf []byte
+	var desiredLen uint32
+
+	err := windows.GetTokenInformation(token, infoClass, nil, 0, &desiredLen)
+
+	for err == windows.ERROR_INSUFFICIENT_BUFFER {
+		buf = make([]byte, desiredLen)
+		err = windows.GetTokenInformation(token, infoClass, unsafe.SliceData(buf), desiredLen, &desiredLen)
+	}
+
+	if err != nil {
+		return nil, err
+	}
+
+	return (*T)(unsafe.Pointer(unsafe.SliceData(buf))), nil
+}
+
+// getTokenInfoFixedLen obtains known fixed-length token information. Use this
+// function for information classes that output enumerations, BOOLs, integers etc.
+func getTokenInfoFixedLen[T any](token windows.Token, infoClass uint32) (result T, _ error) {
+	var actualLen uint32
+	err := windows.GetTokenInformation(token, infoClass, (*byte)(unsafe.Pointer(&result)), uint32(unsafe.Sizeof(result)), &actualLen)
+	return result, err
+}