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//! Configuration logic for when onion service support is disabled.
use serde::{Deserialize, Serialize};
use tor_config::ConfigBuildError;
/// Dummy type for onion service configuration when no onion services are
/// configured.
///
/// This type exists so that we can have a builder for it that will
/// give an error when no onion services are configured.
#[derive(Debug, Clone, Eq, PartialEq)]
pub(crate) struct OnionServiceProxyConfigMap {}
/// A builder for onion service configuration, when no onion services are
/// configured.
///
/// Its only role is to detect whether options are provided, and reject the
/// configuration if so.
//
// TODO: If this is the right pattern, we should make it more general.
#[derive(Serialize, Deserialize, Clone, Debug, Default)]
#[serde(transparent)]
pub(crate) struct OnionServiceProxyConfigMapBuilder(Option<toml::Value>);
impl OnionServiceProxyConfigMapBuilder {
/// Attempt to "build" a dummy OnionServiceProxyConfigMap.
pub(crate) fn build(&self) -> Result<OnionServiceProxyConfigMap, ConfigBuildError> {
if self.0.is_some() {
Err(ConfigBuildError::NoCompileTimeSupport {
// This is within the context of the `onion_services` field, so
// we just say "*" here.
field: "*".to_string(),
problem: "no support for running onion services; hint: recompile arti with onion-service-service".to_string(),
})
} else {
Ok(OnionServiceProxyConfigMap {})
}
}
}
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