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use crate::linux::{iface_index, IfaceIndexLookupError};
use std::net::IpAddr;
use talpid_dbus::systemd_resolved::{AsyncHandle, SystemdResolved as DbusInterface};
use talpid_routing::RouteManagerHandle;
use talpid_types::ErrorExt;
pub(crate) use talpid_dbus::systemd_resolved::Error as SystemdDbusError;
pub type Result<T> = std::result::Result<T, Error>;
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("systemd-resolved operation failed")]
SystemdResolvedError(#[from] SystemdDbusError),
#[error("Failed to resolve interface index with error {0}")]
InterfaceNameError(#[from] IfaceIndexLookupError),
}
pub struct SystemdResolved {
pub dbus_interface: AsyncHandle,
tunnel_index: u32,
}
impl SystemdResolved {
pub fn new() -> Result<Self> {
let dbus_interface = DbusInterface::new()?.async_handle();
let systemd_resolved = SystemdResolved {
dbus_interface,
tunnel_index: 0,
};
Ok(systemd_resolved)
}
pub async fn set_dns(
&mut self,
_route_manager: RouteManagerHandle,
interface_name: &str,
servers: &[IpAddr],
) -> Result<()> {
let tunnel_index = iface_index(interface_name)?;
self.tunnel_index = tunnel_index;
if let Err(error) = self.dbus_interface.disable_dot(self.tunnel_index).await {
log::error!("Failed to disable DoT: {}", error.display_chain());
}
if let Err(error) = self
.dbus_interface
.set_domains(tunnel_index, &[(".", true)])
.await
{
log::error!("Failed to set search domains: {}", error.display_chain());
}
let _ = self
.dbus_interface
.set_dns(self.tunnel_index, servers.to_vec())
.await?;
Ok(())
}
pub async fn reset(&mut self) -> Result<()> {
if let Err(error) = self
.dbus_interface
.set_domains(self.tunnel_index, &[])
.await
{
log::error!("Failed to set search domains: {}", error.display_chain());
}
let _ = self
.dbus_interface
.set_dns(self.tunnel_index, vec![])
.await?;
Ok(())
}
}
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