payment_secret: Option<PaymentSecret>,
payment_metadata: Option<Vec<u8>>,
keysend_preimage: Option<PaymentPreimage>,
+ custom_tlvs: Vec<(u64, Vec<u8>)>,
pending_amt_msat: u64,
/// Used to track the fee paid. Only present if the payment was serialized on 0.0.103+.
pending_fee_msat: Option<u64>,
/// [`Self::payment_secret`] and while nearly all lightning senders support secrets, metadata
/// may not be supported as universally.
pub payment_metadata: Option<Vec<u8>>,
+ /// See [`Self::custom_tlvs`] for more info.
+ pub(super) custom_tlvs: Vec<(u64, Vec<u8>)>,
}
impl_writeable_tlv_based!(RecipientOnionFields, {
(0, payment_secret, option),
+ (1, custom_tlvs, optional_vec),
(2, payment_metadata, option),
});
/// set of onion fields for today's BOLT11 invoices - most nodes require a [`PaymentSecret`]
/// but do not require or provide any further data.
pub fn secret_only(payment_secret: PaymentSecret) -> Self {
- Self { payment_secret: Some(payment_secret), payment_metadata: None }
+ Self { payment_secret: Some(payment_secret), payment_metadata: None, custom_tlvs: Vec::new() }
}
/// Creates a new [`RecipientOnionFields`] with no fields. This generally does not create
/// [`ChannelManager::send_spontaneous_payment`]: super::channelmanager::ChannelManager::send_spontaneous_payment
/// [`RecipientOnionFields::secret_only`]: RecipientOnionFields::secret_only
pub fn spontaneous_empty() -> Self {
- Self { payment_secret: None, payment_metadata: None }
+ Self { payment_secret: None, payment_metadata: None, custom_tlvs: Vec::new() }
+ }
+
+ /// Creates a new [`RecipientOnionFields`] from an existing one, adding custom TLVs. Each
+ /// TLV is provided as a `(u64, Vec<u8>)` for the type number and serialized value
+ /// respectively. TLV type numbers must be unique and within the range
+ /// reserved for custom types, i.e. >= 2^16, otherwise this method will return `Err(())`.
+ ///
+ /// This method will also error for types in the experimental range which have been
+ /// standardized within the protocol, which only includes 5482373484 (keysend) for now.
+ ///
+ /// See [`Self::custom_tlvs`] for more info.
+ pub fn with_custom_tlvs(mut self, mut custom_tlvs: Vec<(u64, Vec<u8>)>) -> Result<Self, ()> {
+ custom_tlvs.sort_unstable_by_key(|(typ, _)| *typ);
+ let mut prev_type = None;
+ for (typ, _) in custom_tlvs.iter() {
+ if *typ < 1 << 16 { return Err(()); }
+ if *typ == 5482373484 { return Err(()); } // keysend
+ match prev_type {
+ Some(prev) if prev >= *typ => return Err(()),
+ _ => {},
+ }
+ prev_type = Some(*typ);
+ }
+ self.custom_tlvs = custom_tlvs;
+ Ok(self)
+ }
+
+ /// Gets the custom TLVs that will be sent or have been received.
+ ///
+ /// Custom TLVs allow sending extra application-specific data with a payment. They provide
+ /// additional flexibility on top of payment metadata, as while other implementations may
+ /// require `payment_metadata` to reflect metadata provided in an invoice, custom TLVs
+ /// do not have this restriction.
+ ///
+ /// Note that if this field is non-empty, it will contain strictly increasing TLVs, each
+ /// represented by a `(u64, Vec<u8>)` for its type number and serialized value respectively.
+ /// This is validated when setting this field using [`Self::with_custom_tlvs`].
+ pub fn custom_tlvs(&self) -> &Vec<(u64, Vec<u8>)> {
+ &self.custom_tlvs
}
/// When we have received some HTLC(s) towards an MPP payment, as we receive further HTLC(s) we
pub(super) fn check_merge(&mut self, further_htlc_fields: &mut Self) -> Result<(), ()> {
if self.payment_secret != further_htlc_fields.payment_secret { return Err(()); }
if self.payment_metadata != further_htlc_fields.payment_metadata { return Err(()); }
- // For custom TLVs we should just drop non-matching ones, but not reject the payment.
+
+ let tlvs = &mut self.custom_tlvs;
+ let further_tlvs = &mut further_htlc_fields.custom_tlvs;
+
+ let even_tlvs = tlvs.iter().filter(|(typ, _)| *typ % 2 == 0);
+ let further_even_tlvs = further_tlvs.iter().filter(|(typ, _)| *typ % 2 == 0);
+ if even_tlvs.ne(further_even_tlvs) { return Err(()) }
+
+ tlvs.retain(|tlv| further_tlvs.iter().any(|further_tlv| tlv == further_tlv));
+ further_tlvs.retain(|further_tlv| tlvs.iter().any(|tlv| tlv == further_tlv));
+
Ok(())
}
}
hash_map::Entry::Occupied(mut payment) => {
let res = match payment.get() {
PendingOutboundPayment::Retryable {
- total_msat, keysend_preimage, payment_secret, payment_metadata, pending_amt_msat, ..
+ total_msat, keysend_preimage, payment_secret, payment_metadata,
+ custom_tlvs, pending_amt_msat, ..
} => {
let retry_amt_msat = route.get_total_amount();
if retry_amt_msat + *pending_amt_msat > *total_msat * (100 + RETRY_OVERFLOW_PERCENTAGE) / 100 {
(*total_msat, RecipientOnionFields {
payment_secret: *payment_secret,
payment_metadata: payment_metadata.clone(),
+ custom_tlvs: custom_tlvs.clone(),
}, *keysend_preimage)
},
PendingOutboundPayment::Legacy { .. } => {
payment_secret: recipient_onion.payment_secret,
payment_metadata: recipient_onion.payment_metadata,
keysend_preimage,
+ custom_tlvs: recipient_onion.custom_tlvs,
starting_block_height: best_block_height,
total_msat: route.get_total_amount(),
});
pub(super) fn claim_htlc<L: Deref>(
&self, payment_id: PaymentId, payment_preimage: PaymentPreimage, session_priv: SecretKey,
- path: Path, from_onchain: bool,
+ path: Path, from_onchain: bool, ev_completion_action: EventCompletionAction,
pending_events: &Mutex<VecDeque<(events::Event, Option<EventCompletionAction>)>>,
logger: &L,
) where L::Target: Logger {
payment_preimage,
payment_hash,
fee_paid_msat,
- }, None));
+ }, Some(ev_completion_action.clone())));
payment.get_mut().mark_fulfilled();
}
payment_id,
payment_hash,
path,
- }, None));
+ }, Some(ev_completion_action)));
}
}
} else {
(6, total_msat, required),
(7, payment_metadata, option),
(8, pending_amt_msat, required),
+ (9, custom_tlvs, optional_vec),
(10, starting_block_height, required),
(not_written, retry_strategy, (static_value, None)),
(not_written, attempts, (static_value, PaymentAttempts::new())),
use alloc::collections::VecDeque;
+ #[test]
+ fn test_recipient_onion_fields_with_custom_tlvs() {
+ let onion_fields = RecipientOnionFields::spontaneous_empty();
+
+ let bad_type_range_tlvs = vec![
+ (0, vec![42]),
+ (1, vec![42; 32]),
+ ];
+ assert!(onion_fields.clone().with_custom_tlvs(bad_type_range_tlvs).is_err());
+
+ let keysend_tlv = vec![
+ (5482373484, vec![42; 32]),
+ ];
+ assert!(onion_fields.clone().with_custom_tlvs(keysend_tlv).is_err());
+
+ let good_tlvs = vec![
+ ((1 << 16) + 1, vec![42]),
+ ((1 << 16) + 3, vec![42; 32]),
+ ];
+ assert!(onion_fields.with_custom_tlvs(good_tlvs).is_ok());
+ }
+
#[test]
#[cfg(feature = "std")]
fn fails_paying_after_expiration() {
projects / rust-lightning / blobdiff