--- /dev/null
+// This file is Copyright its original authors, visible in version control
+// history.
+//
+// This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
+// or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
+// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
+// You may not use this file except in accordance with one or both of these
+// licenses.
+
+//! 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
+//! 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.
+//!
+//! The recipient of the request responds with an `Invoice`.
+//!
+//! ```ignore
+//! extern crate bitcoin;
+//! extern crate lightning;
+//!
+//! use bitcoin::network::constants::Network;
+//! use bitcoin::secp256k1::{KeyPair, PublicKey, Secp256k1, SecretKey};
+//! use core::convert::Infallible;
+//! use lightning::ln::features::OfferFeatures;
+//! use lightning::offers::offer::Offer;
+//! use lightning::util::ser::Writeable;
+//!
+//! # fn parse() -> Result<(), lightning::offers::parse::ParseError> {
+//! let secp_ctx = Secp256k1::new();
+//! let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32])?);
+//! let pubkey = PublicKey::from(keys);
+//! let mut buffer = Vec::new();
+//!
+//! // "offer to be paid" flow
+//! "lno1qcp4256ypq"
+//! .parse::<Offer>()?
+//! .request_invoice(vec![42; 64], pubkey)?
+//! .chain(Network::Testnet)?
+//! .amount_msats(1000)?
+//! .quantity(5)?
+//! .payer_note("foo".to_string())
+//! .build()?
+//! .sign::<_, Infallible>(|digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys)))
+//! .expect("failed verifying signature")
+//! .write(&mut buffer)
+//! .unwrap();
+//! # Ok(())
+//! # }
+//! ```
+
+use bitcoin::blockdata::constants::ChainHash;
+use bitcoin::network::constants::Network;
+use bitcoin::secp256k1::{Message, PublicKey};
+use bitcoin::secp256k1::schnorr::Signature;
+use core::convert::TryFrom;
+use crate::io;
+use crate::ln::features::InvoiceRequestFeatures;
+use crate::ln::msgs::DecodeError;
+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::util::ser::{HighZeroBytesDroppedBigSize, SeekReadable, WithoutLength, Writeable, Writer};
+use crate::util::string::PrintableString;
+
+use crate::prelude::*;
+
+const SIGNATURE_TAG: &'static str = concat!("lightning", "invoice_request", "signature");
+
+/// Builds an [`InvoiceRequest`] from an [`Offer`] for the "offer to be paid" flow.
+///
+/// See [module-level documentation] for usage.
+///
+/// [module-level documentation]: self
+pub struct InvoiceRequestBuilder<'a> {
+ offer: &'a Offer,
+ invoice_request: InvoiceRequestContents,
+}
+
+impl<'a> InvoiceRequestBuilder<'a> {
+ pub(super) fn new(offer: &'a Offer, metadata: Vec<u8>, payer_id: PublicKey) -> Self {
+ Self {
+ offer,
+ invoice_request: InvoiceRequestContents {
+ payer: PayerContents(metadata), offer: offer.contents.clone(), chain: None,
+ amount_msats: None, features: InvoiceRequestFeatures::empty(), quantity: None,
+ payer_id, payer_note: None,
+ },
+ }
+ }
+
+ /// Sets the [`InvoiceRequest::chain`] of the given [`Network`] for paying an invoice. If not
+ /// called, [`Network::Bitcoin`] is assumed. Errors if the chain for `network` is not supported
+ /// by the offer.
+ ///
+ /// Successive calls to this method will override the previous setting.
+ pub fn chain(mut self, network: Network) -> Result<Self, SemanticError> {
+ let chain = ChainHash::using_genesis_block(network);
+ if !self.offer.supports_chain(chain) {
+ return Err(SemanticError::UnsupportedChain);
+ }
+
+ self.invoice_request.chain = Some(chain);
+ Ok(self)
+ }
+
+ /// Sets the [`InvoiceRequest::amount_msats`] for paying an invoice. Errors if `amount_msats` is
+ /// not at least the expected invoice amount (i.e., [`Offer::amount`] times [`quantity`]).
+ ///
+ /// Successive calls to this method will override the previous setting.
+ ///
+ /// [`quantity`]: Self::quantity
+ pub fn amount_msats(mut self, amount_msats: u64) -> Result<Self, SemanticError> {
+ self.invoice_request.offer.check_amount_msats_for_quantity(
+ Some(amount_msats), self.invoice_request.quantity
+ )?;
+ self.invoice_request.amount_msats = Some(amount_msats);
+ Ok(self)
+ }
+
+ /// Sets [`InvoiceRequest::quantity`] of items. If not set, `1` is assumed. Errors if `quantity`
+ /// does not conform to [`Offer::is_valid_quantity`].
+ ///
+ /// Successive calls to this method will override the previous setting.
+ pub fn quantity(mut self, quantity: u64) -> Result<Self, SemanticError> {
+ self.invoice_request.offer.check_quantity(Some(quantity))?;
+ self.invoice_request.quantity = Some(quantity);
+ Ok(self)
+ }
+
+ /// Sets the [`InvoiceRequest::payer_note`].
+ ///
+ /// Successive calls to this method will override the previous setting.
+ pub fn payer_note(mut self, payer_note: String) -> Self {
+ self.invoice_request.payer_note = Some(payer_note);
+ self
+ }
+
+ /// Builds an unsigned [`InvoiceRequest`] after checking for valid semantics. It can be signed
+ /// by [`UnsignedInvoiceRequest::sign`].
+ pub fn build(mut self) -> Result<UnsignedInvoiceRequest<'a>, SemanticError> {
+ #[cfg(feature = "std")] {
+ if self.offer.is_expired() {
+ return Err(SemanticError::AlreadyExpired);
+ }
+ }
+
+ let chain = self.invoice_request.chain();
+ if !self.offer.supports_chain(chain) {
+ return Err(SemanticError::UnsupportedChain);
+ }
+
+ if chain == self.offer.implied_chain() {
+ self.invoice_request.chain = None;
+ }
+
+ if self.offer.amount().is_none() && self.invoice_request.amount_msats.is_none() {
+ return Err(SemanticError::MissingAmount);
+ }
+
+ self.invoice_request.offer.check_quantity(self.invoice_request.quantity)?;
+ self.invoice_request.offer.check_amount_msats_for_quantity(
+ self.invoice_request.amount_msats, self.invoice_request.quantity
+ )?;
+
+ let InvoiceRequestBuilder { offer, invoice_request } = self;
+ Ok(UnsignedInvoiceRequest { offer, invoice_request })
+ }
+}
+
+#[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,
+ invoice_request: InvoiceRequestContents,
+}
+
+impl<'a> UnsignedInvoiceRequest<'a> {
+ /// Signs the invoice request using the given function.
+ pub fn sign<F, E>(self, sign: F) -> Result<InvoiceRequest, SignError<E>>
+ where
+ F: FnOnce(&Message) -> Result<Signature, E>
+ {
+ // Use the offer bytes instead of the offer TLV stream as the offer may have contained
+ // unknown TLV records, which are not stored in `OfferContents`.
+ let (payer_tlv_stream, _offer_tlv_stream, invoice_request_tlv_stream) =
+ self.invoice_request.as_tlv_stream();
+ let offer_bytes = WithoutLength(&self.offer.bytes);
+ let unsigned_tlv_stream = (payer_tlv_stream, offer_bytes, invoice_request_tlv_stream);
+
+ let mut bytes = Vec::new();
+ 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)?);
+
+ // Append the signature TLV record to the bytes.
+ let signature_tlv_stream = SignatureTlvStreamRef {
+ signature: signature.as_ref(),
+ };
+ signature_tlv_stream.write(&mut bytes).unwrap();
+
+ Ok(InvoiceRequest {
+ bytes,
+ contents: self.invoice_request,
+ signature,
+ })
+ }
+}
+
+/// 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.
+///
+/// [`Offer`]: crate::offers::offer::Offer
+#[derive(Clone, Debug)]
+pub struct InvoiceRequest {
+ pub(super) bytes: Vec<u8>,
+ contents: InvoiceRequestContents,
+ signature: Option<Signature>,
+}
+
+/// The contents of an [`InvoiceRequest`], which may be shared with an `Invoice`.
+#[derive(Clone, Debug)]
+pub(super) struct InvoiceRequestContents {
+ payer: PayerContents,
+ offer: OfferContents,
+ chain: Option<ChainHash>,
+ amount_msats: Option<u64>,
+ features: InvoiceRequestFeatures,
+ quantity: Option<u64>,
+ payer_id: PublicKey,
+ payer_note: Option<String>,
+}
+
+impl InvoiceRequest {
+ /// An unpredictable series of bytes, typically containing information about the derivation of
+ /// [`payer_id`].
+ ///
+ /// [`payer_id`]: Self::payer_id
+ pub fn metadata(&self) -> &[u8] {
+ &self.contents.payer.0[..]
+ }
+
+ /// A chain from [`Offer::chains`] that the offer is valid for.
+ pub fn chain(&self) -> ChainHash {
+ self.contents.chain()
+ }
+
+ /// 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`]: Self::chain
+ pub fn amount_msats(&self) -> Option<u64> {
+ self.contents.amount_msats
+ }
+
+ /// Features for paying the invoice.
+ pub fn features(&self) -> &InvoiceRequestFeatures {
+ &self.contents.features
+ }
+
+ /// The quantity of the offer's item conforming to [`Offer::is_valid_quantity`].
+ pub fn quantity(&self) -> Option<u64> {
+ self.contents.quantity
+ }
+
+ /// A possibly transient pubkey used to sign the invoice request.
+ pub fn payer_id(&self) -> PublicKey {
+ self.contents.payer_id
+ }
+
+ /// A payer-provided note which will be seen by the recipient and reflected back in the invoice
+ /// response.
+ pub fn payer_note(&self) -> Option<PrintableString> {
+ self.contents.payer_note.as_ref().map(|payer_note| PrintableString(payer_note.as_str()))
+ }
+
+ /// Signature of the invoice request using [`payer_id`].
+ ///
+ /// [`payer_id`]: Self::payer_id
+ pub fn signature(&self) -> Option<Signature> {
+ self.signature
+ }
+
+ #[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: self.signature.as_ref(),
+ };
+ (payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream, signature_tlv_stream)
+ }
+}
+
+impl InvoiceRequestContents {
+ fn chain(&self) -> ChainHash {
+ self.chain.unwrap_or_else(|| self.offer.implied_chain())
+ }
+
+ pub(super) fn as_tlv_stream(&self) -> PartialInvoiceRequestTlvStreamRef {
+ let payer = PayerTlvStreamRef {
+ metadata: Some(&self.payer.0),
+ };
+
+ let offer = self.offer.as_tlv_stream();
+
+ let features = {
+ if self.features == InvoiceRequestFeatures::empty() { None }
+ else { Some(&self.features) }
+ };
+
+ let invoice_request = InvoiceRequestTlvStreamRef {
+ chain: self.chain.as_ref(),
+ amount: self.amount_msats,
+ features,
+ quantity: self.quantity,
+ payer_id: Some(&self.payer_id),
+ payer_note: self.payer_note.as_ref(),
+ };
+
+ (payer, offer, invoice_request)
+ }
+}
+
+impl Writeable for InvoiceRequest {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ WithoutLength(&self.bytes).write(writer)
+ }
+}
+
+impl Writeable for InvoiceRequestContents {
+ fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
+ self.as_tlv_stream().write(writer)
+ }
+}
+
+tlv_stream!(InvoiceRequestTlvStream, InvoiceRequestTlvStreamRef, 80..160, {
+ (80, chain: ChainHash),
+ (82, amount: (u64, HighZeroBytesDroppedBigSize)),
+ (84, features: InvoiceRequestFeatures),
+ (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)?;
+ let offer = SeekReadable::read(r)?;
+ let invoice_request = SeekReadable::read(r)?;
+ let signature = SeekReadable::read(r)?;
+
+ Ok((payer, offer, invoice_request, signature))
+ }
+}
+
+type PartialInvoiceRequestTlvStream = (PayerTlvStream, OfferTlvStream, InvoiceRequestTlvStream);
+
+type PartialInvoiceRequestTlvStreamRef<'a> = (
+ PayerTlvStreamRef<'a>,
+ OfferTlvStreamRef<'a>,
+ InvoiceRequestTlvStreamRef<'a>,
+);
+
+impl TryFrom<Vec<u8>> for InvoiceRequest {
+ type Error = ParseError;
+
+ fn try_from(bytes: Vec<u8>) -> Result<Self, Self::Error> {
+ let invoice_request = ParsedMessage::<FullInvoiceRequestTlvStream>::try_from(bytes)?;
+ let ParsedMessage { bytes, tlv_stream } = invoice_request;
+ let (
+ payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream,
+ SignatureTlvStream { signature },
+ ) = tlv_stream;
+ let contents = InvoiceRequestContents::try_from(
+ (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)?;
+ }
+
+ Ok(InvoiceRequest { bytes, contents, signature })
+ }
+}
+
+impl TryFrom<PartialInvoiceRequestTlvStream> for InvoiceRequestContents {
+ type Error = SemanticError;
+
+ fn try_from(tlv_stream: PartialInvoiceRequestTlvStream) -> Result<Self, Self::Error> {
+ let (
+ PayerTlvStream { metadata },
+ offer_tlv_stream,
+ InvoiceRequestTlvStream { chain, amount, features, quantity, payer_id, payer_note },
+ ) = tlv_stream;
+
+ let payer = match metadata {
+ None => return Err(SemanticError::MissingPayerMetadata),
+ Some(metadata) => PayerContents(metadata),
+ };
+ let offer = OfferContents::try_from(offer_tlv_stream)?;
+
+ if !offer.supports_chain(chain.unwrap_or_else(|| offer.implied_chain())) {
+ return Err(SemanticError::UnsupportedChain);
+ }
+
+ if offer.amount().is_none() && amount.is_none() {
+ return Err(SemanticError::MissingAmount);
+ }
+
+ offer.check_quantity(quantity)?;
+ offer.check_amount_msats_for_quantity(amount, quantity)?;
+
+ let features = features.unwrap_or_else(InvoiceRequestFeatures::empty);
+
+ let payer_id = match payer_id {
+ None => return Err(SemanticError::MissingPayerId),
+ Some(payer_id) => payer_id,
+ };
+
+ Ok(InvoiceRequestContents {
+ payer, offer, chain, amount_msats: amount, features, quantity, payer_id, payer_note,
+ })
+ }
+}
+
+#[cfg(test)]
+mod tests {
+ use super::InvoiceRequest;
+
+ 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 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;
+ use crate::offers::offer::{Amount, OfferBuilder, Quantity};
+ use crate::offers::parse::{ParseError, SemanticError};
+ 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 offer = OfferBuilder::new("foo".into(), recipient_pubkey())
+ .amount_msats(1000)
+ .build().unwrap();
+ let invoice_request = offer.request_invoice(vec![1; 32], payer_pubkey()).unwrap()
+ .build().unwrap().sign(payer_sign).unwrap();
+
+ let (payer_tlv_stream, offer_tlv_stream, invoice_request_tlv_stream, signature_tlv_stream) =
+ invoice_request.as_tlv_stream();
+ 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!(invoice_request.signature().is_some());
+
+ assert_eq!(payer_tlv_stream.metadata, Some(&vec![1; 32]));
+ assert_eq!(offer_tlv_stream.chains, None);
+ assert_eq!(offer_tlv_stream.metadata, None);
+ assert_eq!(offer_tlv_stream.currency, None);
+ assert_eq!(offer_tlv_stream.amount, Some(1000));
+ assert_eq!(offer_tlv_stream.description, Some(&String::from("foo")));
+ assert_eq!(offer_tlv_stream.features, None);
+ assert_eq!(offer_tlv_stream.absolute_expiry, None);
+ assert_eq!(offer_tlv_stream.paths, None);
+ assert_eq!(offer_tlv_stream.issuer, None);
+ assert_eq!(offer_tlv_stream.quantity_max, None);
+ assert_eq!(offer_tlv_stream.node_id, Some(&recipient_pubkey()));
+ assert_eq!(invoice_request_tlv_stream.chain, None);
+ assert_eq!(invoice_request_tlv_stream.amount, None);
+ assert_eq!(invoice_request_tlv_stream.features, None);
+ assert_eq!(invoice_request_tlv_stream.quantity, None);
+ assert_eq!(invoice_request_tlv_stream.payer_id, Some(&payer_pubkey()));
+ assert_eq!(invoice_request_tlv_stream.payer_note, None);
+ assert!(signature_tlv_stream.signature.is_some());
+
+ 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),
+ }
+ }
+
+ #[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 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),
+ }
+ }
+
+ #[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));
+ },
+ }
+ }
+
+ #[test]
+ fn parses_invoice_request_with_quantity() {
+ 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)),
+ }
+ }
+
+ #[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 parses_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();
+
+ if let Err(e) = InvoiceRequest::try_from(buffer) {
+ panic!("error parsing invoice_request: {:?}", e);
+ }
+ }
+
+ #[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() {
+ let secp_ctx = Secp256k1::new();
+ let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
+ let invoice_request = OfferBuilder::new("foo".into(), keys.public_key())
+ .amount_msats(1000)
+ .build().unwrap()
+ .request_invoice(vec![1; 32], keys.public_key()).unwrap()
+ .build().unwrap()
+ .sign::<_, Infallible>(|digest| Ok(secp_ctx.sign_schnorr_no_aux_rand(digest, &keys)))
+ .unwrap();
+
+ let mut encoded_invoice_request = Vec::new();
+ invoice_request.write(&mut encoded_invoice_request).unwrap();
+ BigSize(1002).write(&mut encoded_invoice_request).unwrap();
+ BigSize(32).write(&mut encoded_invoice_request).unwrap();
+ [42u8; 32].write(&mut encoded_invoice_request).unwrap();
+
+ match InvoiceRequest::try_from(encoded_invoice_request) {
+ Ok(_) => panic!("expected error"),
+ Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),
+ }
+ }
+}
projects / rust-lightning / blobdiff