use crate::offers::parse::{Bolt12ParseError, ParsedMessage, Bolt12SemanticError};
use crate::offers::payer::{PayerContents, PayerTlvStream, PayerTlvStreamRef};
use crate::offers::signer::{Metadata, MetadataMaterial};
-use crate::util::ser::{HighZeroBytesDroppedBigSize, SeekReadable, WithoutLength, Writeable, Writer};
-use crate::util::string::PrintableString;
+use crate::util::ser::{HighZeroBytesDroppedBigSize, Readable, SeekReadable, WithoutLength, Writeable, Writer};
+use crate::util::string::{PrintableString, UntrustedString};
#[cfg(not(c_bindings))]
use {
invoice_request_respond_with_derived_signing_pubkey_methods!(self, self.inner, InvoiceBuilder<DerivedSigningPubkey>);
#[cfg(c_bindings)]
invoice_request_respond_with_derived_signing_pubkey_methods!(self, self.inner, InvoiceWithDerivedSigningPubkeyBuilder);
+
+ pub(crate) fn fields(&self) -> InvoiceRequestFields {
+ let InvoiceRequestContents {
+ payer_id,
+ inner: InvoiceRequestContentsWithoutPayerId {
+ payer: _, offer: _, chain: _, amount_msats, features, quantity, payer_note
+ },
+ } = &self.inner.contents;
+
+ InvoiceRequestFields {
+ payer_id: *payer_id,
+ amount_msats: *amount_msats,
+ features: features.clone(),
+ quantity: *quantity,
+ payer_note_truncated: payer_note.clone()
+ .map(|mut s| { s.truncate(PAYER_NOTE_LIMIT); UntrustedString(s) }),
+ }
+ }
}
impl InvoiceRequestContents {
}
}
+/// Fields sent in an [`InvoiceRequest`] message to include in [`PaymentContext::Bolt12Offer`].
+///
+/// [`PaymentContext::Bolt12Offer`]: crate::blinded_path::payment::PaymentContext::Bolt12Offer
+#[derive(Clone, Debug, Eq, PartialEq)]
+pub struct InvoiceRequestFields {
+ /// A possibly transient pubkey used to sign the invoice request.
+ pub payer_id: PublicKey,
+
+ /// The amount to pay in msats (i.e., the minimum lightning-payable unit for [`chain`]), which
+ /// must be greater than or equal to [`Offer::amount`], converted if necessary.
+ ///
+ /// [`chain`]: InvoiceRequest::chain
+ pub amount_msats: Option<u64>,
+
+ /// Features pertaining to requesting an invoice.
+ pub features: InvoiceRequestFeatures,
+
+ /// The quantity of the offer's item conforming to [`Offer::is_valid_quantity`].
+ pub quantity: Option<u64>,
+
+ /// A payer-provided note which will be seen by the recipient and reflected back in the invoice
+ /// response. Truncated to [`PAYER_NOTE_LIMIT`] characters.
+ pub payer_note_truncated: Option<UntrustedString>,
+}
+
+/// The maximum number of characters included in [`InvoiceRequestFields::payer_note_truncated`].
+pub const PAYER_NOTE_LIMIT: usize = 512;
+
+impl Writeable for InvoiceRequestFields {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ write_tlv_fields!(writer, {
+ (0, self.payer_id, required),
+ (2, self.amount_msats.map(|v| HighZeroBytesDroppedBigSize(v)), option),
+ (4, WithoutLength(&self.features), required),
+ (6, self.quantity.map(|v| HighZeroBytesDroppedBigSize(v)), option),
+ (8, self.payer_note_truncated.as_ref().map(|s| WithoutLength(&s.0)), option),
+ });
+ Ok(())
+ }
+}
+
+impl Readable for InvoiceRequestFields {
+ fn read<R: io::Read>(reader: &mut R) -> Result<Self, DecodeError> {
+ _init_and_read_len_prefixed_tlv_fields!(reader, {
+ (0, payer_id, required),
+ (2, amount_msats, (option, encoding: (u64, HighZeroBytesDroppedBigSize))),
+ (4, features, (option, encoding: (InvoiceRequestFeatures, WithoutLength))),
+ (6, quantity, (option, encoding: (u64, HighZeroBytesDroppedBigSize))),
+ (8, payer_note_truncated, (option, encoding: (String, WithoutLength))),
+ });
+ let features = features.unwrap_or(InvoiceRequestFeatures::empty());
+
+ Ok(InvoiceRequestFields {
+ payer_id: payer_id.0.unwrap(), amount_msats, features, quantity,
+ payer_note_truncated: payer_note_truncated.map(|s| UntrustedString(s)),
+ })
+ }
+}
+
#[cfg(test)]
mod tests {
- use super::{InvoiceRequest, InvoiceRequestTlvStreamRef, SIGNATURE_TAG, UnsignedInvoiceRequest};
+ use super::{InvoiceRequest, InvoiceRequestFields, InvoiceRequestTlvStreamRef, PAYER_NOTE_LIMIT, SIGNATURE_TAG, UnsignedInvoiceRequest};
use bitcoin::blockdata::constants::ChainHash;
use bitcoin::network::constants::Network;
use crate::offers::parse::{Bolt12ParseError, Bolt12SemanticError};
use crate::offers::payer::PayerTlvStreamRef;
use crate::offers::test_utils::*;
- use crate::util::ser::{BigSize, Writeable};
- use crate::util::string::PrintableString;
+ use crate::util::ser::{BigSize, Readable, Writeable};
+ use crate::util::string::{PrintableString, UntrustedString};
#[test]
fn builds_invoice_request_with_defaults() {
Err(e) => assert_eq!(e, Bolt12ParseError::Decode(DecodeError::InvalidValue)),
}
}
+
+ #[test]
+ fn copies_verified_invoice_request_fields() {
+ let desc = "foo".to_string();
+ let node_id = recipient_pubkey();
+ let expanded_key = ExpandedKey::new(&KeyMaterial([42; 32]));
+ let entropy = FixedEntropy {};
+ let secp_ctx = Secp256k1::new();
+
+ #[cfg(c_bindings)]
+ use crate::offers::offer::OfferWithDerivedMetadataBuilder as OfferBuilder;
+ let offer = OfferBuilder
+ ::deriving_signing_pubkey(desc, node_id, &expanded_key, &entropy, &secp_ctx)
+ .chain(Network::Testnet)
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap();
+ assert_eq!(offer.signing_pubkey(), node_id);
+
+ let invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Testnet).unwrap()
+ .amount_msats(1001).unwrap()
+ .quantity(1).unwrap()
+ .payer_note("0".repeat(PAYER_NOTE_LIMIT * 2))
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ match invoice_request.verify(&expanded_key, &secp_ctx) {
+ Ok(invoice_request) => {
+ let fields = invoice_request.fields();
+ assert_eq!(invoice_request.offer_id, offer.id());
+ assert_eq!(
+ fields,
+ InvoiceRequestFields {
+ payer_id: payer_pubkey(),
+ amount_msats: Some(1001),
+ features: InvoiceRequestFeatures::empty(),
+ quantity: Some(1),
+ payer_note_truncated: Some(UntrustedString("0".repeat(PAYER_NOTE_LIMIT))),
+ }
+ );
+
+ let mut buffer = Vec::new();
+ fields.write(&mut buffer).unwrap();
+
+ let deserialized_fields: InvoiceRequestFields =
+ Readable::read(&mut buffer.as_slice()).unwrap();
+ assert_eq!(deserialized_fields, fields);
+ },
+ Err(_) => panic!("unexpected error"),
+ }
+ }
}
projects / rust-lightning / blobdiff