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|
use std::net::SocketAddr;
#[cfg(target_os = "android")]
use crate::DaemonCommand;
#[cfg(target_os = "android")]
use crate::DaemonEventSender;
use futures::{StreamExt, channel::mpsc};
use mullvad_api::AddressCache;
use mullvad_api::{
access_mode::AccessMethodResolver,
availability::ApiAvailability,
proxy::{ApiConnectionMode, ProxyConfig},
};
use mullvad_encrypted_dns_proxy::state::EncryptedDnsProxyState;
use mullvad_management_interface::async_trait;
use mullvad_relay_selector::RelaySelector;
use mullvad_types::access_method::{AccessMethod, BuiltInAccessMethod};
#[cfg(target_os = "android")]
use talpid_core::mpsc::Sender;
use talpid_types::net::AllowedEndpoint;
use talpid_types::net::Endpoint;
use talpid_types::net::TransportProtocol;
use talpid_types::net::{AllowedClients, Connectivity, proxy::CustomProxy};
pub struct DaemonAccessMethodResolver {
relay_selector: RelaySelector,
encrypted_dns_proxy_cache: EncryptedDnsProxyState,
address_cache: AddressCache,
}
impl DaemonAccessMethodResolver {
pub fn new(
relay_selector: RelaySelector,
encrypted_dns_proxy_cache: EncryptedDnsProxyState,
address_cache: AddressCache,
) -> Self {
Self {
relay_selector,
encrypted_dns_proxy_cache,
address_cache,
}
}
}
#[async_trait]
impl AccessMethodResolver for DaemonAccessMethodResolver {
async fn resolve_access_method_setting(
&mut self,
access_method: &AccessMethod,
) -> Option<(AllowedEndpoint, ApiConnectionMode)> {
let connection_mode = {
match access_method {
AccessMethod::BuiltIn(BuiltInAccessMethod::Direct) => ApiConnectionMode::Direct,
AccessMethod::BuiltIn(BuiltInAccessMethod::Bridge) => {
let Some(bridge) = self.relay_selector.get_bridge_forced() else {
log::warn!("Could not select a Mullvad bridge");
log::debug!("The relay list might be empty");
return None;
};
let proxy = CustomProxy::Shadowsocks(bridge);
ApiConnectionMode::Proxied(ProxyConfig::from(proxy))
}
AccessMethod::BuiltIn(BuiltInAccessMethod::EncryptedDnsProxy) => {
if let Err(error) = self
.encrypted_dns_proxy_cache
.fetch_configs("frakta.eu")
.await
{
log::warn!("Failed to fetch new Encrypted DNS Proxy configurations");
log::debug!("{error:#?}");
}
let Some(edp) = self.encrypted_dns_proxy_cache.next_configuration() else {
log::warn!("Could not select next Encrypted DNS proxy config");
return None;
};
ApiConnectionMode::Proxied(ProxyConfig::from(edp))
}
AccessMethod::Custom(config) => {
ApiConnectionMode::Proxied(ProxyConfig::from(config.clone()))
}
}
};
let endpoint =
resolve_allowed_endpoint(&connection_mode, self.address_cache.get_address().await);
Some((endpoint, connection_mode))
}
async fn default_connection_mode(&self) -> AllowedEndpoint {
log::trace!("Defaulting to direct API connection");
resolve_allowed_endpoint(
&ApiConnectionMode::Direct,
self.address_cache.get_address().await,
)
}
}
pub fn resolve_allowed_endpoint(
connection_mode: &ApiConnectionMode,
fallback: SocketAddr,
) -> AllowedEndpoint {
let endpoint = match connection_mode.get_endpoint() {
Some(endpoint) => endpoint,
None => Endpoint::from_socket_address(fallback, TransportProtocol::Tcp),
};
let clients = allowed_clients(connection_mode);
AllowedEndpoint { endpoint, clients }
}
#[cfg(unix)]
pub fn allowed_clients(connection_mode: &ApiConnectionMode) -> AllowedClients {
match connection_mode {
ApiConnectionMode::Proxied(ProxyConfig::Socks5Local(_)) => AllowedClients::All,
ApiConnectionMode::Direct | ApiConnectionMode::Proxied(_) => AllowedClients::Root,
}
}
#[cfg(windows)]
pub fn allowed_clients(connection_mode: &ApiConnectionMode) -> AllowedClients {
match connection_mode {
ApiConnectionMode::Proxied(ProxyConfig::Socks5Local(_)) => AllowedClients::all(),
ApiConnectionMode::Direct | ApiConnectionMode::Proxied(_) => {
let daemon_exe = std::env::current_exe().expect("failed to obtain executable path");
vec![
daemon_exe
.parent()
.expect("missing executable parent directory")
.join("mullvad-problem-report.exe"),
daemon_exe,
]
.into()
}
}
}
#[cfg(target_os = "android")]
pub(crate) fn create_bypass_tx(
event_sender: &DaemonEventSender,
) -> Option<mpsc::Sender<mullvad_api::SocketBypassRequest>> {
let (bypass_tx, mut bypass_rx) = mpsc::channel(1);
let daemon_tx = event_sender.to_specialized_sender();
tokio::spawn(async move {
while let Some((raw_fd, done_tx)) = bypass_rx.next().await {
if daemon_tx
.send(DaemonCommand::BypassSocket(raw_fd, done_tx))
.is_err()
{
log::error!("Can't send socket bypass request to daemon");
break;
}
}
});
Some(bypass_tx)
}
/// Forwards the received values from `offline_state_rx` to the [`ApiAvailability`].
pub(crate) fn forward_offline_state(
api_availability: ApiAvailability,
mut offline_state_rx: mpsc::UnboundedReceiver<Connectivity>,
) {
tokio::spawn(async move {
let is_offline = offline_state_rx
.next()
.await
.expect("missing initial offline state")
.is_offline();
log::info!(
"Initial offline state - {state}",
state = if is_offline { "offline" } else { "online" },
);
api_availability.set_offline(is_offline);
while let Some(state) = offline_state_rx.next().await {
log::info!("Detecting changes to offline state - {state:?}");
api_availability.set_offline(state.is_offline());
}
});
}
|
