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//! Definition of relay selector errors
#![allow(dead_code)]
use crate::{detailer, query::RelayQuery, relay_selector::relays::WireguardConfig};
use mullvad_types::{relay_constraints::MissingCustomBridgeSettings, relay_list::Relay};
use talpid_types::net::IpVersion;
#[derive(thiserror::Error, Debug)]
pub enum Error {
#[error("Failed to open relay cache file")]
OpenRelayCache(#[source] std::io::Error),
#[error("Failed to write relay cache file to disk")]
WriteRelayCache(#[source] std::io::Error),
#[error("The combination of relay constraints is invalid")]
InvalidConstraints,
#[error("No relays matching current entry constraints: {0:?}")]
NoRelayEntry(Box<RelayQuery>),
#[error("No relays matching current exit constraints: {0:?}")]
NoRelayExit(Box<RelayQuery>),
#[error("No relays matching current constraints: {0:?}")]
NoRelay(Box<RelayQuery>),
#[error("No bridges matching current constraints")]
NoBridge,
#[error("No obfuscators matching current constraints")]
NoObfuscator(#[source] Box<dyn std::error::Error + Send + Sync>),
#[error("No endpoint could be constructed due to {} for relay {:?}", .internal, .relay)]
NoEndpoint {
internal: detailer::Error,
relay: EndpointErrorDetails,
},
#[error("Failure in serialization of the relay list")]
Serialize(#[from] serde_json::Error),
#[error("Invalid bridge settings")]
InvalidBridgeSettings(#[from] MissingCustomBridgeSettings),
#[error("The requested IP version ({family}) does not match ip availability")]
IpVersionUnavailable { family: IpVersion },
}
/// Special type which only shows up in [`Error`]. This error variant signals that no valid
/// endpoint could be constructed from the selected relay.
#[derive(Debug)]
pub enum EndpointErrorDetails {
/// No valid Wireguard endpoint could be constructed from this [`WireguardConfig`].
///
/// # Note
/// The inner value is boxed to not bloat the size of [`Error`] due to the size of
/// [`WireguardConfig`].
Wireguard(Box<WireguardConfig>),
/// No valid OpenVPN endpoint could be constructed from this [`Relay`]
///
/// # Note
/// The inner value is boxed to not bloat the size of [`Error`] due to the size of [`Relay`].
OpenVpn(Box<Relay>),
}
impl EndpointErrorDetails {
/// Helper function for constructing an [`Error::NoEndpoint`] from `relay`.
/// Takes care of boxing the [`WireguardConfig`] for you!
pub(crate) fn from_wireguard(relay: WireguardConfig) -> Self {
EndpointErrorDetails::Wireguard(Box::new(relay))
}
/// Helper function for constructing an [`Error::NoEndpoint`] from `relay`.
/// Takes care of boxing the [`Relay`] for you!
pub(crate) fn from_openvpn(relay: Relay) -> Self {
EndpointErrorDetails::OpenVpn(Box::new(relay))
}
}
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