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use std::{
ffi::{OsStr, OsString},
time::Duration,
};
use super::Error;
use mullvad_daemon::service::{SERVICE_DISPLAY_NAME, SERVICE_NAME};
use windows_service::{
service::{Service, ServiceAccess, ServiceState},
service_manager::{ServiceManager, ServiceManagerAccess},
};
use windows_sys::Win32::Foundation::ERROR_SERVICE_ALREADY_RUNNING;
const WAIT_STATUS_TIMEOUT: Duration = Duration::from_secs(8);
/// Start Mullvad VPN service and wait until it is running
pub async fn start() -> Result<(), Error> {
tokio::task::spawn_blocking(start_and_wait_for_service)
.await
.unwrap()
}
fn start_and_wait_for_service() -> Result<(), Error> {
println!("Starting {SERVICE_DISPLAY_NAME}...");
let scm = ServiceManager::local_computer(
None::<OsString>,
ServiceManagerAccess::CONNECT | ServiceManagerAccess::CREATE_SERVICE,
)
.map_err(Error::OpenServiceControlManager)?;
let service = scm
.open_service(SERVICE_NAME, ServiceAccess::all())
.map_err(Error::OpenService)?;
if let Err(error) = service.start::<&OsStr>(&[]) {
if let windows_service::Error::Winapi(error) = &error {
if error.raw_os_error() == Some(ERROR_SERVICE_ALREADY_RUNNING as i32) {
return Ok(());
}
}
return Err(Error::StartService(error));
}
wait_for_status(&service, ServiceState::Running)
}
fn wait_for_status(service: &Service, target_state: ServiceState) -> Result<(), Error> {
let initial_time = std::time::Instant::now();
loop {
let status = service.query_status().map_err(Error::QueryServiceStatus)?;
if status.current_state == target_state {
break;
}
if initial_time.elapsed() >= WAIT_STATUS_TIMEOUT {
return Err(Error::StartServiceTimeout);
}
std::thread::sleep(std::time::Duration::from_secs(1));
}
Ok(())
}
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