//! Data structures and encoding for `invoice_request` messages.
//!
-//! An [`InvoiceRequest`] can be either built from a parsed [`Offer`] as an "offer to be paid" or
-//! built directly as an "offer for money" (e.g., refund, ATM withdrawal). In the former case, it is
+//! An [`InvoiceRequest`] can be built from a parsed [`Offer`] as an "offer to be paid". It is
//! typically constructed by a customer and sent to the merchant who had published the corresponding
-//! offer. In the latter case, an offer doesn't exist as a precursor to the request. Rather the
-//! merchant would typically construct the invoice request and present it to the customer.
+//! offer. The recipient of the request responds with an [`Invoice`].
//!
-//! The recipient of the request responds with an `Invoice`.
+//! For an "offer for money" (e.g., refund, ATM withdrawal), where an offer doesn't exist as a
+//! precursor, see [`Refund`].
//!
-//! ```ignore
+//! [`Invoice`]: crate::offers::invoice::Invoice
+//! [`Refund`]: crate::offers::refund::Refund
+//!
+//! ```
//! extern crate bitcoin;
//! extern crate lightning;
//!
//! let pubkey = PublicKey::from(keys);
//! let mut buffer = Vec::new();
//!
-//! // "offer to be paid" flow
//! "lno1qcp4256ypq"
//! .parse::<Offer>()?
//! .request_invoice(vec![42; 64], pubkey)?
use bitcoin::secp256k1::schnorr::Signature;
use core::convert::TryFrom;
use crate::io;
+use crate::ln::PaymentHash;
use crate::ln::features::InvoiceRequestFeatures;
use crate::ln::msgs::DecodeError;
+use crate::offers::invoice::{BlindedPayInfo, InvoiceBuilder};
use crate::offers::merkle::{SignError, SignatureTlvStream, SignatureTlvStreamRef, self};
use crate::offers::offer::{Offer, OfferContents, OfferTlvStream, OfferTlvStreamRef};
use crate::offers::parse::{ParseError, ParsedMessage, SemanticError};
use crate::offers::payer::{PayerContents, PayerTlvStream, PayerTlvStreamRef};
+use crate::onion_message::BlindedPath;
use crate::util::ser::{HighZeroBytesDroppedBigSize, SeekReadable, WithoutLength, Writeable, Writer};
use crate::util::string::PrintableString;
}
}
+#[cfg(test)]
+impl<'a> InvoiceRequestBuilder<'a> {
+ fn chain_unchecked(mut self, network: Network) -> Self {
+ let chain = ChainHash::using_genesis_block(network);
+ self.invoice_request.chain = Some(chain);
+ self
+ }
+
+ fn amount_msats_unchecked(mut self, amount_msats: u64) -> Self {
+ self.invoice_request.amount_msats = Some(amount_msats);
+ self
+ }
+
+ fn features_unchecked(mut self, features: InvoiceRequestFeatures) -> Self {
+ self.invoice_request.features = features;
+ self
+ }
+
+ fn quantity_unchecked(mut self, quantity: u64) -> Self {
+ self.invoice_request.quantity = Some(quantity);
+ self
+ }
+
+ pub(super) fn build_unchecked(self) -> UnsignedInvoiceRequest<'a> {
+ let InvoiceRequestBuilder { offer, invoice_request } = self;
+ UnsignedInvoiceRequest { offer, invoice_request }
+ }
+}
+
/// A semantically valid [`InvoiceRequest`] that hasn't been signed.
pub struct UnsignedInvoiceRequest<'a> {
offer: &'a Offer,
unsigned_tlv_stream.write(&mut bytes).unwrap();
let pubkey = self.invoice_request.payer_id;
- let signature = Some(merkle::sign_message(sign, SIGNATURE_TAG, &bytes, pubkey)?);
+ let signature = merkle::sign_message(sign, SIGNATURE_TAG, &bytes, pubkey)?;
// Append the signature TLV record to the bytes.
let signature_tlv_stream = SignatureTlvStreamRef {
- signature: signature.as_ref(),
+ signature: Some(&signature),
};
signature_tlv_stream.write(&mut bytes).unwrap();
}
}
-/// An `InvoiceRequest` is a request for an `Invoice` formulated from an [`Offer`].
+/// An `InvoiceRequest` is a request for an [`Invoice`] formulated from an [`Offer`].
///
/// An offer may provide choices such as quantity, amount, chain, features, etc. An invoice request
/// specifies these such that its recipient can send an invoice for payment.
///
+/// [`Invoice`]: crate::offers::invoice::Invoice
/// [`Offer`]: crate::offers::offer::Offer
-#[derive(Clone, Debug)]
+#[derive(Clone, Debug, PartialEq)]
pub struct InvoiceRequest {
- bytes: Vec<u8>,
- contents: InvoiceRequestContents,
- signature: Option<Signature>,
+ pub(super) bytes: Vec<u8>,
+ pub(super) contents: InvoiceRequestContents,
+ signature: Signature,
}
-/// The contents of an [`InvoiceRequest`], which may be shared with an `Invoice`.
-#[derive(Clone, Debug)]
+/// The contents of an [`InvoiceRequest`], which may be shared with an [`Invoice`].
+///
+/// [`Invoice`]: crate::offers::invoice::Invoice
+#[derive(Clone, Debug, PartialEq)]
pub(super) struct InvoiceRequestContents {
payer: PayerContents,
- offer: OfferContents,
+ pub(super) offer: OfferContents,
chain: Option<ChainHash>,
amount_msats: Option<u64>,
features: InvoiceRequestFeatures,
self.contents.amount_msats
}
- /// Features for paying the invoice.
+ /// Features pertaining to requesting an invoice.
pub fn features(&self) -> &InvoiceRequestFeatures {
&self.contents.features
}
/// Signature of the invoice request using [`payer_id`].
///
/// [`payer_id`]: Self::payer_id
- pub fn signature(&self) -> Option<Signature> {
+ pub fn signature(&self) -> Signature {
self.signature
}
+
+ /// Creates an [`Invoice`] for the request with the given required fields and using the
+ /// [`Duration`] since [`std::time::SystemTime::UNIX_EPOCH`] as the creation time.
+ ///
+ /// See [`InvoiceRequest::respond_with_no_std`] for further details where the aforementioned
+ /// creation time is used for the `created_at` parameter.
+ ///
+ /// [`Invoice`]: crate::offers::invoice::Invoice
+ /// [`Duration`]: core::time::Duration
+ #[cfg(feature = "std")]
+ pub fn respond_with(
+ &self, payment_paths: Vec<(BlindedPath, BlindedPayInfo)>, payment_hash: PaymentHash
+ ) -> Result<InvoiceBuilder, SemanticError> {
+ let created_at = std::time::SystemTime::now()
+ .duration_since(std::time::SystemTime::UNIX_EPOCH)
+ .expect("SystemTime::now() should come after SystemTime::UNIX_EPOCH");
+
+ self.respond_with_no_std(payment_paths, payment_hash, created_at)
+ }
+
+ /// Creates an [`Invoice`] for the request with the given required fields.
+ ///
+ /// Unless [`InvoiceBuilder::relative_expiry`] is set, the invoice will expire two hours after
+ /// `created_at`, which is used to set [`Invoice::created_at`]. Useful for `no-std` builds where
+ /// [`std::time::SystemTime`] is not available.
+ ///
+ /// The caller is expected to remember the preimage of `payment_hash` in order to claim a payment
+ /// for the invoice.
+ ///
+ /// The `payment_paths` parameter is useful for maintaining the payment recipient's privacy. It
+ /// must contain one or more elements ordered from most-preferred to least-preferred, if there's
+ /// a preference. Note, however, that any privacy is lost if a public node id was used for
+ /// [`Offer::signing_pubkey`].
+ ///
+ /// Errors if the request contains unknown required features.
+ ///
+ /// [`Invoice`]: crate::offers::invoice::Invoice
+ /// [`Invoice::created_at`]: crate::offers::invoice::Invoice::created_at
+ pub fn respond_with_no_std(
+ &self, payment_paths: Vec<(BlindedPath, BlindedPayInfo)>, payment_hash: PaymentHash,
+ created_at: core::time::Duration
+ ) -> Result<InvoiceBuilder, SemanticError> {
+ if self.features().requires_unknown_bits() {
+ return Err(SemanticError::UnknownRequiredFeatures);
+ }
+
+ InvoiceBuilder::for_offer(self, payment_paths, created_at, payment_hash)
+ }
+
+ #[cfg(test)]
+ fn as_tlv_stream(&self) -> FullInvoiceRequestTlvStreamRef {
+ let (payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream) =
+ self.contents.as_tlv_stream();
+ let signature_tlv_stream = SignatureTlvStreamRef {
+ signature: Some(&self.signature),
+ };
+ (payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream, signature_tlv_stream)
+ }
}
impl InvoiceRequestContents {
- fn chain(&self) -> ChainHash {
+ pub(super) fn chain(&self) -> ChainHash {
self.chain.unwrap_or_else(|| self.offer.implied_chain())
}
tlv_stream!(InvoiceRequestTlvStream, InvoiceRequestTlvStreamRef, 80..160, {
(80, chain: ChainHash),
(82, amount: (u64, HighZeroBytesDroppedBigSize)),
- (84, features: InvoiceRequestFeatures),
+ (84, features: (InvoiceRequestFeatures, WithoutLength)),
(86, quantity: (u64, HighZeroBytesDroppedBigSize)),
(88, payer_id: PublicKey),
(89, payer_note: (String, WithoutLength)),
type FullInvoiceRequestTlvStream =
(PayerTlvStream, OfferTlvStream, InvoiceRequestTlvStream, SignatureTlvStream);
+#[cfg(test)]
+type FullInvoiceRequestTlvStreamRef<'a> = (
+ PayerTlvStreamRef<'a>,
+ OfferTlvStreamRef<'a>,
+ InvoiceRequestTlvStreamRef<'a>,
+ SignatureTlvStreamRef<'a>,
+);
+
impl SeekReadable for FullInvoiceRequestTlvStream {
fn read<R: io::Read + io::Seek>(r: &mut R) -> Result<Self, DecodeError> {
let payer = SeekReadable::read(r)?;
(payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream)
)?;
- if let Some(signature) = &signature {
- merkle::verify_signature(signature, SIGNATURE_TAG, &bytes, contents.payer_id)?;
- }
+ let signature = match signature {
+ None => return Err(ParseError::InvalidSemantics(SemanticError::MissingSignature)),
+ Some(signature) => signature,
+ };
+ merkle::verify_signature(&signature, SIGNATURE_TAG, &bytes, contents.payer_id)?;
Ok(InvoiceRequest { bytes, contents, signature })
}
#[cfg(test)]
mod tests {
- use super::InvoiceRequest;
+ use super::{InvoiceRequest, InvoiceRequestTlvStreamRef, SIGNATURE_TAG};
- use bitcoin::secp256k1::{KeyPair, Secp256k1, SecretKey};
+ use bitcoin::blockdata::constants::ChainHash;
+ use bitcoin::network::constants::Network;
+ use bitcoin::secp256k1::{KeyPair, Message, PublicKey, Secp256k1, SecretKey, self};
+ use bitcoin::secp256k1::schnorr::Signature;
use core::convert::{Infallible, TryFrom};
- use crate::ln::msgs::DecodeError;
- use crate::offers::offer::OfferBuilder;
- use crate::offers::parse::ParseError;
+ use core::num::NonZeroU64;
+ #[cfg(feature = "std")]
+ use core::time::Duration;
+ use crate::ln::features::InvoiceRequestFeatures;
+ use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
+ use crate::offers::merkle::{SignError, SignatureTlvStreamRef, self};
+ use crate::offers::offer::{Amount, OfferBuilder, OfferTlvStreamRef, Quantity};
+ use crate::offers::parse::{ParseError, SemanticError};
+ use crate::offers::payer::PayerTlvStreamRef;
use crate::util::ser::{BigSize, Writeable};
+ use crate::util::string::PrintableString;
+
+ fn payer_keys() -> KeyPair {
+ let secp_ctx = Secp256k1::new();
+ KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap())
+ }
+
+ fn payer_sign(digest: &Message) -> Result<Signature, Infallible> {
+ let secp_ctx = Secp256k1::new();
+ let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys))
+ }
+
+ fn payer_pubkey() -> PublicKey {
+ payer_keys().public_key()
+ }
+
+ fn recipient_sign(digest: &Message) -> Result<Signature, Infallible> {
+ let secp_ctx = Secp256k1::new();
+ let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[43; 32]).unwrap());
+ Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys))
+ }
+
+ fn recipient_pubkey() -> PublicKey {
+ let secp_ctx = Secp256k1::new();
+ KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[43; 32]).unwrap()).public_key()
+ }
+
+ #[test]
+ fn builds_invoice_request_with_defaults() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ assert_eq!(invoice_request.bytes, buffer.as_slice());
+ assert_eq!(invoice_request.metadata(), &[1; 32]);
+ assert_eq!(invoice_request.chain(), ChainHash::using_genesis_block(Network::Bitcoin));
+ assert_eq!(invoice_request.amount_msats(), None);
+ assert_eq!(invoice_request.features(), &InvoiceRequestFeatures::empty());
+ assert_eq!(invoice_request.quantity(), None);
+ assert_eq!(invoice_request.payer_id(), payer_pubkey());
+ assert_eq!(invoice_request.payer_note(), None);
+ assert!(
+ merkle::verify_signature(
+ &invoice_request.signature, SIGNATURE_TAG, &invoice_request.bytes, payer_pubkey()
+ ).is_ok()
+ );
+
+ assert_eq!(
+ invoice_request.as_tlv_stream(),
+ (
+ PayerTlvStreamRef { metadata: Some(&vec![1; 32]) },
+ OfferTlvStreamRef {
+ chains: None,
+ metadata: None,
+ currency: None,
+ amount: Some(1000),
+ description: Some(&String::from("foo")),
+ features: None,
+ absolute_expiry: None,
+ paths: None,
+ issuer: None,
+ quantity_max: None,
+ node_id: Some(&recipient_pubkey()),
+ },
+ InvoiceRequestTlvStreamRef {
+ chain: None,
+ amount: None,
+ features: None,
+ quantity: None,
+ payer_id: Some(&payer_pubkey()),
+ payer_note: None,
+ },
+ SignatureTlvStreamRef { signature: Some(&invoice_request.signature()) },
+ ),
+ );
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice request: {:?}", e);
+ }
+ }
+
+ #[cfg(feature = "std")]
+ #[test]
+ fn builds_invoice_request_from_offer_with_expiration() {
+ let future_expiry = Duration::from_secs(u64::max_value());
+ let past_expiry = Duration::from_secs(0);
+
+ if let Err(e) = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .absolute_expiry(future_expiry)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ panic!("error building invoice_request: {:?}", e);
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .absolute_expiry(past_expiry)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::AlreadyExpired),
+ }
+ }
+
+ #[test]
+ fn builds_invoice_request_with_chain() {
+ let mainnet = ChainHash::using_genesis_block(Network::Bitcoin);
+ let testnet = ChainHash::using_genesis_block(Network::Testnet);
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Bitcoin).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.chain(), mainnet);
+ assert_eq!(tlv_stream.chain, None);
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .chain(Network::Testnet)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Testnet).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.chain(), testnet);
+ assert_eq!(tlv_stream.chain, Some(&testnet));
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .chain(Network::Bitcoin)
+ .chain(Network::Testnet)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Bitcoin).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.chain(), mainnet);
+ assert_eq!(tlv_stream.chain, None);
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .chain(Network::Bitcoin)
+ .chain(Network::Testnet)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Bitcoin).unwrap()
+ .chain(Network::Testnet).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.chain(), testnet);
+ assert_eq!(tlv_stream.chain, Some(&testnet));
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .chain(Network::Testnet)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Bitcoin)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::UnsupportedChain),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .chain(Network::Testnet)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::UnsupportedChain),
+ }
+ }
+
+ #[test]
+ fn builds_invoice_request_with_amount() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(1000).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.amount_msats(), Some(1000));
+ assert_eq!(tlv_stream.amount, Some(1000));
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(1001).unwrap()
+ .amount_msats(1000).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.amount_msats(), Some(1000));
+ assert_eq!(tlv_stream.amount, Some(1000));
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(1001).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.amount_msats(), Some(1001));
+ assert_eq!(tlv_stream.amount, Some(1001));
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(999)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InsufficientAmount),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .quantity(2).unwrap()
+ .amount_msats(1000)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InsufficientAmount),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(MAX_VALUE_MSAT + 1)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(1000).unwrap()
+ .quantity(2).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InsufficientAmount),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::MissingAmount),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .quantity(u64::max_value()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
+ }
+ }
+
+ #[test]
+ fn builds_invoice_request_with_features() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .features_unchecked(InvoiceRequestFeatures::unknown())
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.features(), &InvoiceRequestFeatures::unknown());
+ assert_eq!(tlv_stream.features, Some(&InvoiceRequestFeatures::unknown()));
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .features_unchecked(InvoiceRequestFeatures::unknown())
+ .features_unchecked(InvoiceRequestFeatures::empty())
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.features(), &InvoiceRequestFeatures::empty());
+ assert_eq!(tlv_stream.features, None);
+ }
+
+ #[test]
+ fn builds_invoice_request_with_quantity() {
+ let one = NonZeroU64::new(1).unwrap();
+ let ten = NonZeroU64::new(10).unwrap();
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::One)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.quantity(), None);
+ assert_eq!(tlv_stream.quantity, None);
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::One)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(2_000).unwrap()
+ .quantity(2)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::UnexpectedQuantity),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(ten))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(10_000).unwrap()
+ .quantity(10).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.amount_msats(), Some(10_000));
+ assert_eq!(tlv_stream.amount, Some(10_000));
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(ten))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(11_000).unwrap()
+ .quantity(11)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::InvalidQuantity),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(2_000).unwrap()
+ .quantity(2).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.amount_msats(), Some(2_000));
+ assert_eq!(tlv_stream.amount, Some(2_000));
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::MissingQuantity),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(one))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build()
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SemanticError::MissingQuantity),
+ }
+ }
+
+ #[test]
+ fn builds_invoice_request_with_payer_note() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .payer_note("bar".into())
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.payer_note(), Some(PrintableString("bar")));
+ assert_eq!(tlv_stream.payer_note, Some(&String::from("bar")));
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .payer_note("bar".into())
+ .payer_note("baz".into())
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let (_, _, tlv_stream, _) = invoice_request.as_tlv_stream();
+ assert_eq!(invoice_request.payer_note(), Some(PrintableString("baz")));
+ assert_eq!(tlv_stream.payer_note, Some(&String::from("baz")));
+ }
+
+ #[test]
+ fn fails_signing_invoice_request() {
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(|_| Err(()))
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SignError::Signing(())),
+ }
+
+ match OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(recipient_sign)
+ {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, SignError::Verification(secp256k1::Error::InvalidSignature)),
+ }
+ }
+
+ #[test]
+ fn parses_invoice_request_with_metadata() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![42; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+ }
+
+ #[test]
+ fn parses_invoice_request_with_chain() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain(Network::Bitcoin).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .chain_unchecked(Network::Testnet)
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnsupportedChain)),
+ }
+ }
+
+ #[test]
+ fn parses_invoice_request_with_amount() {
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(1000).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingAmount)),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats_unchecked(999)
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InsufficientAmount)),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount(Amount::Currency { iso4217_code: *b"USD", amount: 1000 })
+ .build_unchecked()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnsupportedCurrency));
+ },
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .quantity(u64::max_value()).unwrap()
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidAmount)),
+ }
+ }
+
+ #[test]
+ fn parses_invoice_request_with_quantity() {
+ let one = NonZeroU64::new(1).unwrap();
+ let ten = NonZeroU64::new(10).unwrap();
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::One)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::One)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(2_000).unwrap()
+ .quantity_unchecked(2)
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::UnexpectedQuantity));
+ },
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(ten))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(10_000).unwrap()
+ .quantity(10).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(ten))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(11_000).unwrap()
+ .quantity_unchecked(11)
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidQuantity)),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .amount_msats(2_000).unwrap()
+ .quantity(2).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Unbounded)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingQuantity)),
+ }
+
+ let invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .supported_quantity(Quantity::Bounded(one))
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build_unchecked()
+ .sign(payer_sign).unwrap();
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingQuantity)),
+ }
+ }
+
+ #[test]
+ fn fails_parsing_invoice_request_without_metadata() {
+ let offer = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap();
+ let unsigned_invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap();
+ let mut tlv_stream = unsigned_invoice_request.invoice_request.as_tlv_stream();
+ tlv_stream.0.metadata = None;
+
+ let mut buffer = Vec::new();
+ tlv_stream.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingPayerMetadata));
+ },
+ }
+ }
+
+ #[test]
+ fn fails_parsing_invoice_request_without_payer_id() {
+ let offer = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap();
+ let unsigned_invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap();
+ let mut tlv_stream = unsigned_invoice_request.invoice_request.as_tlv_stream();
+ tlv_stream.2.payer_id = None;
+
+ let mut buffer = Vec::new();
+ tlv_stream.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingPayerId)),
+ }
+ }
+
+ #[test]
+ fn fails_parsing_invoice_request_without_node_id() {
+ let offer = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap();
+ let unsigned_invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap();
+ let mut tlv_stream = unsigned_invoice_request.invoice_request.as_tlv_stream();
+ tlv_stream.1.node_id = None;
+
+ let mut buffer = Vec::new();
+ tlv_stream.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingSigningPubkey));
+ },
+ }
+ }
+
+ #[test]
+ fn fails_parsing_invoice_request_without_signature() {
+ let mut buffer = Vec::new();
+ OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .invoice_request
+ .write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingSignature)),
+ }
+ }
+
+ #[test]
+ fn fails_parsing_invoice_request_with_invalid_signature() {
+ let mut invoice_request = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap()
+ .sign(payer_sign).unwrap();
+ let last_signature_byte = invoice_request.bytes.last_mut().unwrap();
+ *last_signature_byte = last_signature_byte.wrapping_add(1);
+
+ let mut buffer = Vec::new();
+ invoice_request.write(&mut buffer).unwrap();
+
+ match InvoiceRequest::try_from(buffer) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => {
+ assert_eq!(e, ParseError::InvalidSignature(secp256k1::Error::InvalidSignature));
+ },
+ }
+ }
#[test]
fn fails_parsing_invoice_request_with_extra_tlv_records() {
projects / rust-lightning / blobdiff