// IsAnInteractiveSession determines if calling process is running interactively.
// It queries the process token for membership in the Interactive group.
// http://stackoverflow.com/questions/2668851/how-do-i-detect-that-my-application-is-running-as-service-or-in-an-interactive-s
func IsAnInteractiveSession() (bool, error) {
interSid, err := allocSid(winapi.SECURITY_INTERACTIVE_RID)
if err != nil {
return false, err
}
defer winapi.FreeSid(interSid)
serviceSid, err := allocSid(winapi.SECURITY_SERVICE_RID)
if err != nil {
return false, err
}
defer winapi.FreeSid(serviceSid)
t, err := syscall.OpenCurrentProcessToken()
if err != nil {
return false, err
}
defer t.Close()
gs, err := getTokenGroups(t)
if err != nil {
return false, err
}
p := unsafe.Pointer(&gs.Groups[0])
groups := (*[2 << 20]syscall.SIDAndAttributes)(p)[:gs.GroupCount]
for _, g := range groups {
if winapi.EqualSid(g.Sid, interSid) {
return true, nil
}
if winapi.EqualSid(g.Sid, serviceSid) {
return false, nil
}
}
return false, nil
}
func (fs *osFileSystem) currentHomeDir() (string, error) {
t, err := syscall.OpenCurrentProcessToken()
if err != nil {
return "", err
}
defer t.Close()
return t.GetUserProfileDirectory()
}
// Current returns the current user.
func Current() (*User, error) {
t, e := syscall.OpenCurrentProcessToken()
if e != nil {
return nil, e
}
u, e := t.GetTokenUser()
if e != nil {
return nil, e
}
pg, e := t.GetTokenPrimaryGroup()
if e != nil {
return nil, e
}
gid, e := pg.PrimaryGroup.String()
if e != nil {
return nil, e
}
dir, e := t.GetUserProfileDirectory()
if e != nil {
return nil, e
}
return newUser(u.User.Sid, gid, dir)
}
