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//! Configuration logic for tor-ptmgr.
use derive_builder::Builder;
use serde::{Deserialize, Serialize};
use tor_config::{CfgPath, ConfigBuildError};
use tor_linkspec::PtTransportName;
/// A single pluggable transport, to be launched as an external process.
///
/// Pluggable transports are programs that transforms and obfuscates traffic on
/// the network between a Tor client and a Tor bridge, so that an adversary
/// cannot recognize it as Tor traffic.
#[derive(Clone, Debug, Builder, Eq, PartialEq)]
#[builder(derive(Debug, Serialize, Deserialize))]
#[builder(build_fn(error = "ConfigBuildError"))]
pub struct ManagedTransportConfig {
/// Names of the transport protocols that we are willing to use from this binary.
///
/// (These protocols are arbitrary identifiers that describe which protocols
/// we want. They must match names that the binary knows how to provide.)
//
// NOTE(eta): This doesn't use the list builder stuff, because you're not likely to
// set this field more than once.
pub(crate) protocols: Vec<PtTransportName>,
/// The path to the binary to run.
///
/// This needs to be the path to some executable file on disk.
pub(crate) path: CfgPath,
/// One or more command-line arguments to pass to the binary.
// TODO: Should this be OsString? That's a pain to parse...
//
// NOTE(eta): This doesn't use the list builder stuff, because you're not likely to
// set this field more than once.
#[builder(default)]
pub(crate) arguments: Vec<String>,
/// If true, launch this transport on startup. Otherwise, we launch
/// it on demand.
#[builder(default)]
pub(crate) run_on_startup: bool,
}
impl ManagedTransportConfigBuilder {
/// Inspect the list of protocols (ie, transport names)
///
/// If none have yet been specified, returns an empty list.
pub fn get_protocols(&self) -> &[PtTransportName] {
self.protocols.as_deref().unwrap_or_default()
}
}
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