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//! network status documents - items for all varieties, that vary
//!
//! **This file is reincluded multiple times**,
//! by the macros in [`crate::doc::ns_variety_definition_macros`],
//! once for votes, and once for each consensus flavour.
//! It is *not* a module `crate::doc::netstatus::rs::each_variety`.
//! Each time this file is included by one of the macros mentioned above,
//! the `ns_***` macros (such as `ns_const_name!`) may expand to different values.
//! See [`crate::doc::ns_variety_definition_macros`].
use super::*;
ns_use_this_variety! {
pub use [crate::doc::netstatus::rs]::?::{
RouterStatus, RouterStatusConstructor,
RouterStatusIntroItem, RouterStatusIntroItemConstructor,
};
}
/// Network status document - consensus, or vote
///
/// <https://spec.torproject.org/dir-spec/consensus-formats.html>
/// <https://spec.torproject.org/dir-spec/computing-consensus.html#flavors>
#[derive(Clone, Debug, Deftly)]
#[derive_deftly(Constructor, NetdocEncodable, NetdocParseableUnverified)]
#[deftly(netdoc(doctype_for_error = NETSTATUS_DOCTYPE_FOR_ERROR))]
#[allow(clippy::exhaustive_structs)]
pub struct NetworkStatus {
/// The `network-status-version` intro item
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:network-status-version>
/// In the "preamble" in the spec, but not in our `Preamble` type for Reasons.
pub network_status_version: NetworkStatusVersionItem,
/// `vote-status`
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:vote-status>
#[deftly(netdoc(single_arg))]
pub vote_status: ns_type!(
VoteStatusConsensus,
VoteStatusVote,
),
/// The rest of the preamble
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#section:preable>
#[deftly(constructor, netdoc(flatten))]
pub preamble: Preamble,
/// Authority section
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#section:authority>
#[deftly(constructor, netdoc(subdoc))]
pub authority: ns_type!(
ConsensusAuthoritySection,
VoteAuthoritySection,
/// Router status entries
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#section:router-status>
#[deftly(netdoc(subdoc))]
pub routers: Vec<RouterStatus>,
/// Footer
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#section:footer>
#[deftly(constructor)]
pub footer: Footer,
#[doc(hidden)]
#[deftly(netdoc(skip))]
pub __non_exhaustive: (),
/// `network-status-version` intro item in a consensus
/// This is hard to parse because it's so irregular (even, ambiguous).
/// <https://spec.torproject.org/dir-spec/computing-consensus.html#flavor:microdesc>
/// <https://gitlab.torproject.org/tpo/core/torspec/-/work_items/359>
#[derive(Clone, Debug, Deftly, Default)]
#[derive_deftly(Constructor, ItemValueEncodable, ItemValueParseable)]
pub struct NetworkStatusVersionItem {
/// The version number, always `3`
pub version: NetworkStatusVersion,
/// The `flavor` argument
/// * In a plain consensus, this is an optional `ns`.
/// * In an md consensus, this is always `microdesc`.
/// * In a vote, there is no variety, but to avoid ambiguity, we reject.
pub variety: VarietyKeyword,
/// The preamble of a network status document, except for the intro and `vote-status` items.
/// **Does not include `network-status-version` and `vote-status`**.
/// In the old parser this is not represented directly;
/// instead, in `Consensus.flavor`, there's just the `ConsensusFlavor`.
/// `parse2` doesn't (currently) support subdocuments which contain the parent's intro item
/// (ie, `#[deftly(netdoc(flatten))]` is not supported on the first field.)
#[derive_deftly(Constructor, NetdocEncodableFields, NetdocParseableFields)]
pub struct Preamble {
/// Consensus methods supported by this voter.
pub consensus_methods: ns_type!( NotPresent, NotPresent, ConsensusMethods ),
/// What "method" was used to produce this consensus? (A
/// consensus method is a version number used by authorities to
/// upgrade the consensus algorithm.)
// Not #[deftly(netdoc(single_arg))] because that would mean a consensuses
// had an always-present singleton `consensus_method` item with no arguments.
pub consensus_method: ns_type!( (u32,), (u32,), NotPresent ),
/// Publication time (of a vote)
// had an always-present singleton `published` item with no arguments.
pub published: ns_type!( NotPresent, NotPresent, (Iso8601TimeSp,) ),
/// Over what time is this consensus valid? (For votes, this is
/// the time over which the voted-upon consensus should be valid.)
#[deftly(netdoc(flatten))]
pub lifetime: Lifetime,
/// How long in seconds should voters wait for votes and
/// signatures (respectively) to propagate?
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:voting-delay>
pub voting_delay: VotingDelay,
/// List of recommended Tor client versions.
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:client-versions>
#[deftly(netdoc(default))]
pub client_versions: RecommendedTorVersions,
/// List of recommended Tor relay versions.
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:server-versions>
pub server_versions: RecommendedTorVersions,
/// Router flags which could be determined
#[deftly(netdoc(with = "relay_flags::ParserEncoder::<relay_flags::NoImplicitRepr>"))]
pub known_flags: DocRelayFlags,
/// Lists of recommended and required subprotocols.
/// **`{recommended,required}-{client,relay}-protocols`**
pub proto_statuses: Arc<ProtoStatuses>,
/// Declared parameters for tunable settings about how to the
/// network should operator. Some of these adjust timeouts and
/// whatnot; some features things on and off.
pub params: NetParams<i32>,
/// Global shared-random values
pub shared_rand: ns_type!( SharedRandStatuses, SharedRandStatuses, NotPresent ),
/// The footer of a network status document.
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#section:footer>>
#[derive_deftly(Constructor, NetdocEncodable, NetdocParseable)]
pub struct Footer {
/// Intro item
/// <https://spec.torproject.org/dir-spec/consensus-formats.html#item:directory-footer>
pub directory_footer: (),
/// Fields that appear in consensuses (only)
pub consensus: ns_type!(ConsensusFooterFields, ConsensusFooterFields, NotPresent),
/// Signatures on a network status document
#[derive(Deftly, Clone, Debug)]
#[derive_deftly(NetdocEncodableFields, NetdocParseableSignatures)]
#[deftly(netdoc(signatures(hashes_accu = "DirectorySignaturesHashesAccu")))]
#[non_exhaustive]
pub struct NetworkStatusSignatures {
/// `directory-signature`s
pub directory_signature: ns_type!(Vec<Signature>, Vec<Signature>, Signature),
impl Preamble {
/// Calculate the validity range (time interval) for this network status document
pub fn validity_time_range(&self) -> std::ops::Range<SystemTime> {
let lifetime = self.lifetime.clone();
let delay = self.voting_delay;
let dist_interval = time::Duration::from_secs(delay.dist_seconds.into());
let starting_time = lifetime.valid_after.saturating_sub(dist_interval);
starting_time..*lifetime.valid_until