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#![deny(rust_2018_idioms)]
use log::{debug, error, info, warn};
use mullvad_daemon::{
logging,
management_interface::{ManagementInterfaceEventBroadcaster, ManagementInterfaceServer},
rpc_uniqueness_check, version, Daemon, DaemonCommandChannel, DaemonCommandSender,
};
use std::{path::PathBuf, thread, time::Duration};
use talpid_types::ErrorExt;
mod cli;
mod exception_logging;
mod shutdown;
#[cfg(windows)]
mod system_service;
const DAEMON_LOG_FILENAME: &str = "daemon.log";
fn main() {
let config = cli::get_config();
let log_dir = init_logging(config).unwrap_or_else(|error| {
eprintln!("{}", error);
std::process::exit(1)
});
let exit_code = match run_platform(config, log_dir) {
Ok(_) => 0,
Err(error) => {
error!("{}", error);
1
}
};
debug!("Process exiting with code {}", exit_code);
std::process::exit(exit_code);
}
fn init_logging(config: &cli::Config) -> Result<Option<PathBuf>, String> {
let log_dir = get_log_dir(config)?;
let log_file = log_dir.as_ref().map(|dir| dir.join(DAEMON_LOG_FILENAME));
logging::init_logger(
config.log_level,
log_file.as_ref(),
config.log_stdout_timestamps,
)
.map_err(|e| e.display_chain_with_msg("Unable to initialize logger"))?;
log_panics::init();
exception_logging::enable();
version::log_version();
if let Some(ref log_dir) = log_dir {
info!("Logging to {}", log_dir.display());
}
Ok(log_dir)
}
fn get_log_dir(config: &cli::Config) -> Result<Option<PathBuf>, String> {
if config.log_to_file {
Ok(Some(mullvad_paths::log_dir().map_err(|e| {
e.display_chain_with_msg("Unable to get log directory")
})?))
} else {
Ok(None)
}
}
#[cfg(windows)]
fn run_platform(config: &cli::Config, log_dir: Option<PathBuf>) -> Result<(), String> {
if config.run_as_service {
system_service::run()
} else {
if config.register_service {
let install_result = system_service::install_service().map_err(|e| e.display_chain());
if install_result.is_ok() {
println!("Installed the service.");
}
install_result
} else {
run_standalone(log_dir)
}
}
}
#[cfg(not(windows))]
fn run_platform(_config: &cli::Config, log_dir: Option<PathBuf>) -> Result<(), String> {
run_standalone(log_dir)
}
fn run_standalone(log_dir: Option<PathBuf>) -> Result<(), String> {
if rpc_uniqueness_check::is_another_instance_running() {
return Err("Another instance of the daemon is already running".to_owned());
}
if !running_as_admin() {
warn!("Running daemon as a non-administrator user, clients might refuse to connect");
}
let daemon = create_daemon(log_dir)?;
let shutdown_handle = daemon.shutdown_handle();
shutdown::set_shutdown_signal_handler(move || shutdown_handle.shutdown())
.map_err(|e| e.display_chain())?;
daemon.run().map_err(|e| e.display_chain())?;
info!("Mullvad daemon is quitting");
thread::sleep(Duration::from_millis(500));
Ok(())
}
fn create_daemon(
log_dir: Option<PathBuf>,
) -> Result<Daemon<ManagementInterfaceEventBroadcaster>, String> {
let resource_dir = mullvad_paths::get_resource_dir();
let settings_dir = mullvad_paths::settings_dir()
.map_err(|e| e.display_chain_with_msg("Unable to get settings dir"))?;
let cache_dir = mullvad_paths::cache_dir()
.map_err(|e| e.display_chain_with_msg("Unable to get cache dir"))?;
let command_channel = DaemonCommandChannel::new();
let event_listener = spawn_management_interface(command_channel.sender())?;
Daemon::start(
log_dir,
resource_dir,
settings_dir,
cache_dir,
event_listener,
command_channel,
)
.map_err(|e| e.display_chain_with_msg("Unable to initialize daemon"))
}
fn spawn_management_interface(
command_sender: DaemonCommandSender,
) -> Result<ManagementInterfaceEventBroadcaster, String> {
let server = ManagementInterfaceServer::start(command_sender).map_err(|error| {
error.display_chain_with_msg("Unable to start management interface server")
})?;
let event_broadcaster = server.event_broadcaster();
info!("Management interface listening on {}", server.socket_path());
thread::spawn(|| {
server.wait();
info!("Management interface shut down");
});
Ok(event_broadcaster)
}
#[cfg(unix)]
fn running_as_admin() -> bool {
let uid = unsafe { libc::getuid() };
uid == 0
}
#[cfg(windows)]
fn running_as_admin() -> bool {
// TODO: Check if user is administrator correctly on Windows.
true
}
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