pub trait UpfrontShutdownScript: Context {}
impl UpfrontShutdownScript for InitContext {}
impl UpfrontShutdownScript for NodeContext {}
+
+ pub trait VariableLengthOnion: Context {}
+ impl VariableLengthOnion for InitContext {}
+ impl VariableLengthOnion for NodeContext {}
}
/// Tracks the set of features which a node implements, templated by the context in which it
/// Create a Features with the features we support
pub fn supported() -> InitFeatures {
InitFeatures {
- flags: vec![2 | 1 << 5],
+ flags: vec![2 | 1 << 5, 1 << (9-8)],
mark: PhantomData,
}
}
#[cfg(not(feature = "fuzztarget"))]
pub(crate) fn supported() -> NodeFeatures {
NodeFeatures {
- flags: vec![2 | 1 << 5],
+ flags: vec![2 | 1 << 5, 1 << (9-8)],
mark: PhantomData,
}
}
#[cfg(feature = "fuzztarget")]
pub fn supported() -> NodeFeatures {
NodeFeatures {
- flags: vec![2 | 1 << 5],
+ flags: vec![2 | 1 << 5, 1 << (9-8)],
mark: PhantomData,
}
}
pub(crate) fn requires_unknown_bits(&self) -> bool {
self.flags.iter().enumerate().any(|(idx, &byte)| {
(match idx {
- 0 => (byte & 0b00010100),
+ // Unknown bits are even bits which we don't understand, we list ones which we do
+ // here:
+ // unknown, upfront_shutdown_script, unknown (actually initial_routing_sync, but it
+ // is only valid as an optional feature), and data_loss_protect:
+ 0 => (byte & 0b01000100),
+ // unknown, unknown, unknown, var_onion_optin:
1 => (byte & 0b01010100),
+ // fallback, all even bits set:
_ => (byte & 0b01010101),
}) != 0
})
pub(crate) fn supports_unknown_bits(&self) -> bool {
self.flags.iter().enumerate().any(|(idx, &byte)| {
(match idx {
+ // unknown, upfront_shutdown_script, initial_routing_sync (is only valid as an
+ // optional feature), and data_loss_protect:
0 => (byte & 0b11000100),
+ // unknown, unknown, unknown, var_onion_optin:
1 => (byte & 0b11111100),
_ => byte,
}) != 0
}
}
+impl<T: sealed::VariableLengthOnion> Features<T> {
+ pub(crate) fn supports_variable_length_onion(&self) -> bool {
+ self.flags.len() > 1 && (self.flags[1] & 3) != 0
+ }
+}
+
impl<T: sealed::InitialRoutingSync> Features<T> {
pub(crate) fn initial_routing_sync(&self) -> bool {
self.flags.len() > 0 && (self.flags[0] & (1 << 3)) != 0