1 // This file is Copyright its original authors, visible in version control
4 // This file is licensed under the Apache License, Version 2.0 <LICENSE-APACHE
5 // or http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
6 // <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your option.
7 // You may not use this file except in accordance with one or both of these
10 //! Data structures and encoding for `offer` messages.
12 //! An [`Offer`] represents an "offer to be paid." It is typically constructed by a merchant and
13 //! published as a QR code to be scanned by a customer. The customer uses the offer to request an
14 //! invoice from the merchant to be paid.
17 //! extern crate bitcoin;
18 //! extern crate core;
19 //! extern crate lightning;
21 //! use core::convert::TryFrom;
22 //! use core::num::NonZeroU64;
23 //! use core::time::Duration;
25 //! use bitcoin::secp256k1::{KeyPair, PublicKey, Secp256k1, SecretKey};
26 //! use lightning::offers::offer::{Offer, OfferBuilder, Quantity};
27 //! use lightning::offers::parse::ParseError;
28 //! use lightning::util::ser::{Readable, Writeable};
30 //! # use lightning::onion_message::BlindedPath;
31 //! # #[cfg(feature = "std")]
32 //! # use std::time::SystemTime;
34 //! # fn create_blinded_path() -> BlindedPath { unimplemented!() }
35 //! # fn create_another_blinded_path() -> BlindedPath { unimplemented!() }
37 //! # #[cfg(feature = "std")]
38 //! # fn build() -> Result<(), ParseError> {
39 //! let secp_ctx = Secp256k1::new();
40 //! let keys = KeyPair::from_secret_key(&secp_ctx, &SecretKey::from_slice(&[42; 32]).unwrap());
41 //! let pubkey = PublicKey::from(keys);
43 //! let expiration = SystemTime::now() + Duration::from_secs(24 * 60 * 60);
44 //! let offer = OfferBuilder::new("coffee, large".to_string(), pubkey)
45 //! .amount_msats(20_000)
46 //! .supported_quantity(Quantity::Unbounded)
47 //! .absolute_expiry(expiration.duration_since(SystemTime::UNIX_EPOCH).unwrap())
48 //! .issuer("Foo Bar".to_string())
49 //! .path(create_blinded_path())
50 //! .path(create_another_blinded_path())
53 //! // Encode as a bech32 string for use in a QR code.
54 //! let encoded_offer = offer.to_string();
56 //! // Parse from a bech32 string after scanning from a QR code.
57 //! let offer = encoded_offer.parse::<Offer>()?;
59 //! // Encode offer as raw bytes.
60 //! let mut bytes = Vec::new();
61 //! offer.write(&mut bytes).unwrap();
63 //! // Decode raw bytes into an offer.
64 //! let offer = Offer::try_from(bytes)?;
69 use bitcoin::blockdata::constants::ChainHash;
70 use bitcoin::network::constants::Network;
71 use bitcoin::secp256k1::PublicKey;
72 use core::convert::TryFrom;
73 use core::num::NonZeroU64;
74 use core::str::FromStr;
75 use core::time::Duration;
77 use crate::ln::features::OfferFeatures;
78 use crate::ln::msgs::MAX_VALUE_MSAT;
79 use crate::offers::invoice_request::InvoiceRequestBuilder;
80 use crate::offers::parse::{Bech32Encode, ParseError, ParsedMessage, SemanticError};
81 use crate::onion_message::BlindedPath;
82 use crate::util::ser::{HighZeroBytesDroppedBigSize, WithoutLength, Writeable, Writer};
83 use crate::util::string::PrintableString;
85 use crate::prelude::*;
87 #[cfg(feature = "std")]
88 use std::time::SystemTime;
90 /// Builds an [`Offer`] for the "offer to be paid" flow.
92 /// See [module-level documentation] for usage.
94 /// [module-level documentation]: self
95 pub struct OfferBuilder {
100 /// Creates a new builder for an offer setting the [`Offer::description`] and using the
101 /// [`Offer::signing_pubkey`] for signing invoices. The associated secret key must be remembered
102 /// while the offer is valid.
104 /// Use a different pubkey per offer to avoid correlating offers.
105 pub fn new(description: String, signing_pubkey: PublicKey) -> Self {
106 let offer = OfferContents {
107 chains: None, metadata: None, amount: None, description,
108 features: OfferFeatures::empty(), absolute_expiry: None, issuer: None, paths: None,
109 supported_quantity: Quantity::one(), signing_pubkey: Some(signing_pubkey),
111 OfferBuilder { offer }
114 /// Adds the chain hash of the given [`Network`] to [`Offer::chains`]. If not called,
115 /// the chain hash of [`Network::Bitcoin`] is assumed to be the only one supported.
117 /// See [`Offer::chains`] on how this relates to the payment currency.
119 /// Successive calls to this method will add another chain hash.
120 pub fn chain(mut self, network: Network) -> Self {
121 let chains = self.offer.chains.get_or_insert_with(Vec::new);
122 let chain = ChainHash::using_genesis_block(network);
123 if !chains.contains(&chain) {
130 /// Sets the [`Offer::metadata`].
132 /// Successive calls to this method will override the previous setting.
133 pub fn metadata(mut self, metadata: Vec<u8>) -> Self {
134 self.offer.metadata = Some(metadata);
138 /// Sets the [`Offer::amount`] as an [`Amount::Bitcoin`].
140 /// Successive calls to this method will override the previous setting.
141 pub fn amount_msats(self, amount_msats: u64) -> Self {
142 self.amount(Amount::Bitcoin { amount_msats })
145 /// Sets the [`Offer::amount`].
147 /// Successive calls to this method will override the previous setting.
148 fn amount(mut self, amount: Amount) -> Self {
149 self.offer.amount = Some(amount);
153 /// Sets the [`Offer::absolute_expiry`] as seconds since the Unix epoch. Any expiry that has
154 /// already passed is valid and can be checked for using [`Offer::is_expired`].
156 /// Successive calls to this method will override the previous setting.
157 pub fn absolute_expiry(mut self, absolute_expiry: Duration) -> Self {
158 self.offer.absolute_expiry = Some(absolute_expiry);
162 /// Sets the [`Offer::issuer`].
164 /// Successive calls to this method will override the previous setting.
165 pub fn issuer(mut self, issuer: String) -> Self {
166 self.offer.issuer = Some(issuer);
170 /// Adds a blinded path to [`Offer::paths`]. Must include at least one path if only connected by
171 /// private channels or if [`Offer::signing_pubkey`] is not a public node id.
173 /// Successive calls to this method will add another blinded path. Caller is responsible for not
174 /// adding duplicate paths.
175 pub fn path(mut self, path: BlindedPath) -> Self {
176 self.offer.paths.get_or_insert_with(Vec::new).push(path);
180 /// Sets the quantity of items for [`Offer::supported_quantity`]. If not called, defaults to
181 /// [`Quantity::one`].
183 /// Successive calls to this method will override the previous setting.
184 pub fn supported_quantity(mut self, quantity: Quantity) -> Self {
185 self.offer.supported_quantity = quantity;
189 /// Builds an [`Offer`] from the builder's settings.
190 pub fn build(mut self) -> Result<Offer, SemanticError> {
191 match self.offer.amount {
192 Some(Amount::Bitcoin { amount_msats }) => {
193 if amount_msats > MAX_VALUE_MSAT {
194 return Err(SemanticError::InvalidAmount);
197 Some(Amount::Currency { .. }) => return Err(SemanticError::UnsupportedCurrency),
201 if let Some(chains) = &self.offer.chains {
202 if chains.len() == 1 && chains[0] == self.offer.implied_chain() {
203 self.offer.chains = None;
207 let mut bytes = Vec::new();
208 self.offer.write(&mut bytes).unwrap();
212 contents: self.offer,
219 fn features_unchecked(mut self, features: OfferFeatures) -> Self {
220 self.offer.features = features;
225 /// An `Offer` is a potentially long-lived proposal for payment of a good or service.
227 /// An offer is a precursor to an [`InvoiceRequest`]. A merchant publishes an offer from which a
228 /// customer may request an `Invoice` for a specific quantity and using an amount sufficient to
229 /// cover that quantity (i.e., at least `quantity * amount`). See [`Offer::amount`].
231 /// Offers may be denominated in currency other than bitcoin but are ultimately paid using the
234 /// Through the use of [`BlindedPath`]s, offers provide recipient privacy.
236 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
237 #[derive(Clone, Debug)]
239 // The serialized offer. Needed when creating an `InvoiceRequest` if the offer contains unknown
241 pub(super) bytes: Vec<u8>,
242 pub(super) contents: OfferContents,
245 /// The contents of an [`Offer`], which may be shared with an [`InvoiceRequest`] or an `Invoice`.
247 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
248 #[derive(Clone, Debug)]
249 pub(super) struct OfferContents {
250 chains: Option<Vec<ChainHash>>,
251 metadata: Option<Vec<u8>>,
252 amount: Option<Amount>,
254 features: OfferFeatures,
255 absolute_expiry: Option<Duration>,
256 issuer: Option<String>,
257 paths: Option<Vec<BlindedPath>>,
258 supported_quantity: Quantity,
259 signing_pubkey: Option<PublicKey>,
263 // TODO: Return a slice once ChainHash has constants.
264 // - https://github.com/rust-bitcoin/rust-bitcoin/pull/1283
265 // - https://github.com/rust-bitcoin/rust-bitcoin/pull/1286
266 /// The chains that may be used when paying a requested invoice (e.g., bitcoin mainnet).
267 /// Payments must be denominated in units of the minimal lightning-payable unit (e.g., msats)
268 /// for the selected chain.
269 pub fn chains(&self) -> Vec<ChainHash> {
270 self.contents.chains()
273 pub(super) fn implied_chain(&self) -> ChainHash {
274 self.contents.implied_chain()
277 /// Returns whether the given chain is supported by the offer.
278 pub fn supports_chain(&self, chain: ChainHash) -> bool {
279 self.contents.supports_chain(chain)
282 // TODO: Link to corresponding method in `InvoiceRequest`.
283 /// Opaque bytes set by the originator. Useful for authentication and validating fields since it
284 /// is reflected in `invoice_request` messages along with all the other fields from the `offer`.
285 pub fn metadata(&self) -> Option<&Vec<u8>> {
286 self.contents.metadata.as_ref()
289 /// The minimum amount required for a successful payment of a single item.
290 pub fn amount(&self) -> Option<&Amount> {
291 self.contents.amount()
294 /// A complete description of the purpose of the payment. Intended to be displayed to the user
295 /// but with the caveat that it has not been verified in any way.
296 pub fn description(&self) -> PrintableString {
297 PrintableString(&self.contents.description)
300 /// Features pertaining to the offer.
301 pub fn features(&self) -> &OfferFeatures {
302 &self.contents.features
305 /// Duration since the Unix epoch when an invoice should no longer be requested.
307 /// If `None`, the offer does not expire.
308 pub fn absolute_expiry(&self) -> Option<Duration> {
309 self.contents.absolute_expiry
312 /// Whether the offer has expired.
313 #[cfg(feature = "std")]
314 pub fn is_expired(&self) -> bool {
315 match self.absolute_expiry() {
316 Some(seconds_from_epoch) => match SystemTime::UNIX_EPOCH.elapsed() {
317 Ok(elapsed) => elapsed > seconds_from_epoch,
324 /// The issuer of the offer, possibly beginning with `user@domain` or `domain`. Intended to be
325 /// displayed to the user but with the caveat that it has not been verified in any way.
326 pub fn issuer(&self) -> Option<PrintableString> {
327 self.contents.issuer.as_ref().map(|issuer| PrintableString(issuer.as_str()))
330 /// Paths to the recipient originating from publicly reachable nodes. Blinded paths provide
331 /// recipient privacy by obfuscating its node id.
332 pub fn paths(&self) -> &[BlindedPath] {
333 self.contents.paths.as_ref().map(|paths| paths.as_slice()).unwrap_or(&[])
336 /// The quantity of items supported.
337 pub fn supported_quantity(&self) -> Quantity {
338 self.contents.supported_quantity()
341 /// Returns whether the given quantity is valid for the offer.
342 pub fn is_valid_quantity(&self, quantity: u64) -> bool {
343 self.contents.is_valid_quantity(quantity)
346 /// Returns whether a quantity is expected in an [`InvoiceRequest`] for the offer.
348 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
349 pub fn expects_quantity(&self) -> bool {
350 self.contents.expects_quantity()
353 /// The public key used by the recipient to sign invoices.
354 pub fn signing_pubkey(&self) -> PublicKey {
355 self.contents.signing_pubkey.unwrap()
358 /// Creates an [`InvoiceRequest`] for the offer with the given `metadata` and `payer_id`, which
359 /// will be reflected in the `Invoice` response.
361 /// The `metadata` is useful for including information about the derivation of `payer_id` such
362 /// that invoice response handling can be stateless. Also serves as payer-provided entropy while
363 /// hashing in the signature calculation.
365 /// This should not leak any information such as by using a simple BIP-32 derivation path.
366 /// Otherwise, payments may be correlated.
368 /// Errors if the offer contains unknown required features.
370 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
371 pub fn request_invoice(
372 &self, metadata: Vec<u8>, payer_id: PublicKey
373 ) -> Result<InvoiceRequestBuilder, SemanticError> {
374 if self.features().requires_unknown_bits() {
375 return Err(SemanticError::UnknownRequiredFeatures);
378 Ok(InvoiceRequestBuilder::new(self, metadata, payer_id))
382 fn as_tlv_stream(&self) -> OfferTlvStreamRef {
383 self.contents.as_tlv_stream()
387 impl AsRef<[u8]> for Offer {
388 fn as_ref(&self) -> &[u8] {
394 pub fn chains(&self) -> Vec<ChainHash> {
395 self.chains.as_ref().cloned().unwrap_or_else(|| vec![self.implied_chain()])
398 pub fn implied_chain(&self) -> ChainHash {
399 ChainHash::using_genesis_block(Network::Bitcoin)
402 pub fn supports_chain(&self, chain: ChainHash) -> bool {
403 self.chains().contains(&chain)
406 pub fn amount(&self) -> Option<&Amount> {
410 pub(super) fn check_amount_msats_for_quantity(
411 &self, amount_msats: Option<u64>, quantity: Option<u64>
412 ) -> Result<(), SemanticError> {
413 let offer_amount_msats = match self.amount {
415 Some(Amount::Bitcoin { amount_msats }) => amount_msats,
416 Some(Amount::Currency { .. }) => return Err(SemanticError::UnsupportedCurrency),
419 if !self.expects_quantity() || quantity.is_some() {
420 let expected_amount_msats = offer_amount_msats * quantity.unwrap_or(1);
421 let amount_msats = amount_msats.unwrap_or(expected_amount_msats);
423 if amount_msats < expected_amount_msats {
424 return Err(SemanticError::InsufficientAmount);
427 if amount_msats > MAX_VALUE_MSAT {
428 return Err(SemanticError::InvalidAmount);
435 pub fn supported_quantity(&self) -> Quantity {
436 self.supported_quantity
439 pub(super) fn check_quantity(&self, quantity: Option<u64>) -> Result<(), SemanticError> {
440 let expects_quantity = self.expects_quantity();
442 None if expects_quantity => Err(SemanticError::MissingQuantity),
443 Some(_) if !expects_quantity => Err(SemanticError::UnexpectedQuantity),
444 Some(quantity) if !self.is_valid_quantity(quantity) => {
445 Err(SemanticError::InvalidQuantity)
451 fn is_valid_quantity(&self, quantity: u64) -> bool {
452 match self.supported_quantity {
453 Quantity::Bounded(n) => {
456 else { quantity > 0 && quantity <= n }
458 Quantity::Unbounded => quantity > 0,
462 fn expects_quantity(&self) -> bool {
463 match self.supported_quantity {
464 Quantity::Bounded(n) => n.get() != 1,
465 Quantity::Unbounded => true,
469 pub(super) fn as_tlv_stream(&self) -> OfferTlvStreamRef {
470 let (currency, amount) = match &self.amount {
471 None => (None, None),
472 Some(Amount::Bitcoin { amount_msats }) => (None, Some(*amount_msats)),
473 Some(Amount::Currency { iso4217_code, amount }) => (
474 Some(iso4217_code), Some(*amount)
479 if self.features == OfferFeatures::empty() { None } else { Some(&self.features) }
483 chains: self.chains.as_ref(),
484 metadata: self.metadata.as_ref(),
487 description: Some(&self.description),
489 absolute_expiry: self.absolute_expiry.map(|duration| duration.as_secs()),
490 paths: self.paths.as_ref(),
491 issuer: self.issuer.as_ref(),
492 quantity_max: self.supported_quantity.to_tlv_record(),
493 node_id: self.signing_pubkey.as_ref(),
498 impl Writeable for Offer {
499 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
500 WithoutLength(&self.bytes).write(writer)
504 impl Writeable for OfferContents {
505 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
506 self.as_tlv_stream().write(writer)
510 /// The minimum amount required for an item in an [`Offer`], denominated in either bitcoin or
511 /// another currency.
512 #[derive(Clone, Debug, PartialEq)]
514 /// An amount of bitcoin.
516 /// The amount in millisatoshi.
519 /// An amount of currency specified using ISO 4712.
521 /// The currency that the amount is denominated in.
522 iso4217_code: CurrencyCode,
523 /// The amount in the currency unit adjusted by the ISO 4712 exponent (e.g., USD cents).
528 /// An ISO 4712 three-letter currency code (e.g., USD).
529 pub type CurrencyCode = [u8; 3];
531 /// Quantity of items supported by an [`Offer`].
532 #[derive(Clone, Copy, Debug, PartialEq)]
534 /// Up to a specific number of items (inclusive).
536 /// One or more items.
541 /// The default quantity of one.
542 pub fn one() -> Self {
543 Quantity::Bounded(NonZeroU64::new(1).unwrap())
546 fn to_tlv_record(&self) -> Option<u64> {
548 Quantity::Bounded(n) => {
550 if n == 1 { None } else { Some(n) }
552 Quantity::Unbounded => Some(0),
557 tlv_stream!(OfferTlvStream, OfferTlvStreamRef, 1..80, {
558 (2, chains: (Vec<ChainHash>, WithoutLength)),
559 (4, metadata: (Vec<u8>, WithoutLength)),
560 (6, currency: CurrencyCode),
561 (8, amount: (u64, HighZeroBytesDroppedBigSize)),
562 (10, description: (String, WithoutLength)),
563 (12, features: OfferFeatures),
564 (14, absolute_expiry: (u64, HighZeroBytesDroppedBigSize)),
565 (16, paths: (Vec<BlindedPath>, WithoutLength)),
566 (18, issuer: (String, WithoutLength)),
567 (20, quantity_max: (u64, HighZeroBytesDroppedBigSize)),
568 (22, node_id: PublicKey),
571 impl Bech32Encode for Offer {
572 const BECH32_HRP: &'static str = "lno";
575 impl FromStr for Offer {
576 type Err = ParseError;
578 fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err> {
579 Self::from_bech32_str(s)
583 impl TryFrom<Vec<u8>> for Offer {
584 type Error = ParseError;
586 fn try_from(bytes: Vec<u8>) -> Result<Self, Self::Error> {
587 let offer = ParsedMessage::<OfferTlvStream>::try_from(bytes)?;
588 let ParsedMessage { bytes, tlv_stream } = offer;
589 let contents = OfferContents::try_from(tlv_stream)?;
590 Ok(Offer { bytes, contents })
594 impl TryFrom<OfferTlvStream> for OfferContents {
595 type Error = SemanticError;
597 fn try_from(tlv_stream: OfferTlvStream) -> Result<Self, Self::Error> {
599 chains, metadata, currency, amount, description, features, absolute_expiry, paths,
600 issuer, quantity_max, node_id,
603 let amount = match (currency, amount) {
604 (None, None) => None,
605 (None, Some(amount_msats)) if amount_msats > MAX_VALUE_MSAT => {
606 return Err(SemanticError::InvalidAmount);
608 (None, Some(amount_msats)) => Some(Amount::Bitcoin { amount_msats }),
609 (Some(_), None) => return Err(SemanticError::MissingAmount),
610 (Some(iso4217_code), Some(amount)) => Some(Amount::Currency { iso4217_code, amount }),
613 let description = match description {
614 None => return Err(SemanticError::MissingDescription),
615 Some(description) => description,
618 let features = features.unwrap_or_else(OfferFeatures::empty);
620 let absolute_expiry = absolute_expiry
621 .map(|seconds_from_epoch| Duration::from_secs(seconds_from_epoch));
623 let supported_quantity = match quantity_max {
624 None => Quantity::one(),
625 Some(0) => Quantity::Unbounded,
626 Some(1) => return Err(SemanticError::InvalidQuantity),
627 Some(n) => Quantity::Bounded(NonZeroU64::new(n).unwrap()),
630 if node_id.is_none() {
631 return Err(SemanticError::MissingSigningPubkey);
635 chains, metadata, amount, description, features, absolute_expiry, issuer, paths,
636 supported_quantity, signing_pubkey: node_id,
641 impl core::fmt::Display for Offer {
642 fn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {
643 self.fmt_bech32_str(f)
649 use super::{Amount, Offer, OfferBuilder, Quantity};
651 use bitcoin::blockdata::constants::ChainHash;
652 use bitcoin::network::constants::Network;
653 use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
654 use core::convert::TryFrom;
655 use core::num::NonZeroU64;
656 use core::time::Duration;
657 use crate::ln::features::OfferFeatures;
658 use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
659 use crate::offers::parse::{ParseError, SemanticError};
660 use crate::onion_message::{BlindedHop, BlindedPath};
661 use crate::util::ser::{BigSize, Writeable};
662 use crate::util::string::PrintableString;
664 fn pubkey(byte: u8) -> PublicKey {
665 let secp_ctx = Secp256k1::new();
666 PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
669 fn privkey(byte: u8) -> SecretKey {
670 SecretKey::from_slice(&[byte; 32]).unwrap()
674 fn builds_offer_with_defaults() {
675 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
676 let tlv_stream = offer.as_tlv_stream();
677 let mut buffer = Vec::new();
678 offer.write(&mut buffer).unwrap();
680 assert_eq!(offer.bytes, buffer.as_slice());
681 assert_eq!(offer.chains(), vec![ChainHash::using_genesis_block(Network::Bitcoin)]);
682 assert!(offer.supports_chain(ChainHash::using_genesis_block(Network::Bitcoin)));
683 assert_eq!(offer.metadata(), None);
684 assert_eq!(offer.amount(), None);
685 assert_eq!(offer.description(), PrintableString("foo"));
686 assert_eq!(offer.features(), &OfferFeatures::empty());
687 assert_eq!(offer.absolute_expiry(), None);
688 #[cfg(feature = "std")]
689 assert!(!offer.is_expired());
690 assert_eq!(offer.paths(), &[]);
691 assert_eq!(offer.issuer(), None);
692 assert_eq!(offer.supported_quantity(), Quantity::one());
693 assert_eq!(offer.signing_pubkey(), pubkey(42));
695 assert_eq!(tlv_stream.chains, None);
696 assert_eq!(tlv_stream.metadata, None);
697 assert_eq!(tlv_stream.currency, None);
698 assert_eq!(tlv_stream.amount, None);
699 assert_eq!(tlv_stream.description, Some(&String::from("foo")));
700 assert_eq!(tlv_stream.features, None);
701 assert_eq!(tlv_stream.absolute_expiry, None);
702 assert_eq!(tlv_stream.paths, None);
703 assert_eq!(tlv_stream.issuer, None);
704 assert_eq!(tlv_stream.quantity_max, None);
705 assert_eq!(tlv_stream.node_id, Some(&pubkey(42)));
707 if let Err(e) = Offer::try_from(buffer) {
708 panic!("error parsing offer: {:?}", e);
713 fn builds_offer_with_chains() {
714 let mainnet = ChainHash::using_genesis_block(Network::Bitcoin);
715 let testnet = ChainHash::using_genesis_block(Network::Testnet);
717 let offer = OfferBuilder::new("foo".into(), pubkey(42))
718 .chain(Network::Bitcoin)
721 assert!(offer.supports_chain(mainnet));
722 assert_eq!(offer.chains(), vec![mainnet]);
723 assert_eq!(offer.as_tlv_stream().chains, None);
725 let offer = OfferBuilder::new("foo".into(), pubkey(42))
726 .chain(Network::Testnet)
729 assert!(offer.supports_chain(testnet));
730 assert_eq!(offer.chains(), vec![testnet]);
731 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
733 let offer = OfferBuilder::new("foo".into(), pubkey(42))
734 .chain(Network::Testnet)
735 .chain(Network::Testnet)
738 assert!(offer.supports_chain(testnet));
739 assert_eq!(offer.chains(), vec![testnet]);
740 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
742 let offer = OfferBuilder::new("foo".into(), pubkey(42))
743 .chain(Network::Bitcoin)
744 .chain(Network::Testnet)
747 assert!(offer.supports_chain(mainnet));
748 assert!(offer.supports_chain(testnet));
749 assert_eq!(offer.chains(), vec![mainnet, testnet]);
750 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![mainnet, testnet]));
754 fn builds_offer_with_metadata() {
755 let offer = OfferBuilder::new("foo".into(), pubkey(42))
756 .metadata(vec![42; 32])
759 assert_eq!(offer.metadata(), Some(&vec![42; 32]));
760 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![42; 32]));
762 let offer = OfferBuilder::new("foo".into(), pubkey(42))
763 .metadata(vec![42; 32])
764 .metadata(vec![43; 32])
767 assert_eq!(offer.metadata(), Some(&vec![43; 32]));
768 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![43; 32]));
772 fn builds_offer_with_amount() {
773 let bitcoin_amount = Amount::Bitcoin { amount_msats: 1000 };
774 let currency_amount = Amount::Currency { iso4217_code: *b"USD", amount: 10 };
776 let offer = OfferBuilder::new("foo".into(), pubkey(42))
780 let tlv_stream = offer.as_tlv_stream();
781 assert_eq!(offer.amount(), Some(&bitcoin_amount));
782 assert_eq!(tlv_stream.amount, Some(1000));
783 assert_eq!(tlv_stream.currency, None);
785 let builder = OfferBuilder::new("foo".into(), pubkey(42))
786 .amount(currency_amount.clone());
787 let tlv_stream = builder.offer.as_tlv_stream();
788 assert_eq!(builder.offer.amount, Some(currency_amount.clone()));
789 assert_eq!(tlv_stream.amount, Some(10));
790 assert_eq!(tlv_stream.currency, Some(b"USD"));
791 match builder.build() {
792 Ok(_) => panic!("expected error"),
793 Err(e) => assert_eq!(e, SemanticError::UnsupportedCurrency),
796 let offer = OfferBuilder::new("foo".into(), pubkey(42))
797 .amount(currency_amount.clone())
798 .amount(bitcoin_amount.clone())
801 let tlv_stream = offer.as_tlv_stream();
802 assert_eq!(tlv_stream.amount, Some(1000));
803 assert_eq!(tlv_stream.currency, None);
805 let invalid_amount = Amount::Bitcoin { amount_msats: MAX_VALUE_MSAT + 1 };
806 match OfferBuilder::new("foo".into(), pubkey(42)).amount(invalid_amount).build() {
807 Ok(_) => panic!("expected error"),
808 Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
813 fn builds_offer_with_features() {
814 let offer = OfferBuilder::new("foo".into(), pubkey(42))
815 .features_unchecked(OfferFeatures::unknown())
818 assert_eq!(offer.features(), &OfferFeatures::unknown());
819 assert_eq!(offer.as_tlv_stream().features, Some(&OfferFeatures::unknown()));
821 let offer = OfferBuilder::new("foo".into(), pubkey(42))
822 .features_unchecked(OfferFeatures::unknown())
823 .features_unchecked(OfferFeatures::empty())
826 assert_eq!(offer.features(), &OfferFeatures::empty());
827 assert_eq!(offer.as_tlv_stream().features, None);
831 fn builds_offer_with_absolute_expiry() {
832 let future_expiry = Duration::from_secs(u64::max_value());
833 let past_expiry = Duration::from_secs(0);
835 let offer = OfferBuilder::new("foo".into(), pubkey(42))
836 .absolute_expiry(future_expiry)
839 #[cfg(feature = "std")]
840 assert!(!offer.is_expired());
841 assert_eq!(offer.absolute_expiry(), Some(future_expiry));
842 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(future_expiry.as_secs()));
844 let offer = OfferBuilder::new("foo".into(), pubkey(42))
845 .absolute_expiry(future_expiry)
846 .absolute_expiry(past_expiry)
849 #[cfg(feature = "std")]
850 assert!(offer.is_expired());
851 assert_eq!(offer.absolute_expiry(), Some(past_expiry));
852 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(past_expiry.as_secs()));
856 fn builds_offer_with_paths() {
859 introduction_node_id: pubkey(40),
860 blinding_point: pubkey(41),
862 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
863 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
867 introduction_node_id: pubkey(40),
868 blinding_point: pubkey(41),
870 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
871 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
876 let offer = OfferBuilder::new("foo".into(), pubkey(42))
877 .path(paths[0].clone())
878 .path(paths[1].clone())
881 let tlv_stream = offer.as_tlv_stream();
882 assert_eq!(offer.paths(), paths.as_slice());
883 assert_eq!(offer.signing_pubkey(), pubkey(42));
884 assert_ne!(pubkey(42), pubkey(44));
885 assert_eq!(tlv_stream.paths, Some(&paths));
886 assert_eq!(tlv_stream.node_id, Some(&pubkey(42)));
890 fn builds_offer_with_issuer() {
891 let offer = OfferBuilder::new("foo".into(), pubkey(42))
892 .issuer("bar".into())
895 assert_eq!(offer.issuer(), Some(PrintableString("bar")));
896 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("bar")));
898 let offer = OfferBuilder::new("foo".into(), pubkey(42))
899 .issuer("bar".into())
900 .issuer("baz".into())
903 assert_eq!(offer.issuer(), Some(PrintableString("baz")));
904 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("baz")));
908 fn builds_offer_with_supported_quantity() {
909 let ten = NonZeroU64::new(10).unwrap();
911 let offer = OfferBuilder::new("foo".into(), pubkey(42))
912 .supported_quantity(Quantity::one())
915 let tlv_stream = offer.as_tlv_stream();
916 assert_eq!(offer.supported_quantity(), Quantity::one());
917 assert_eq!(tlv_stream.quantity_max, None);
919 let offer = OfferBuilder::new("foo".into(), pubkey(42))
920 .supported_quantity(Quantity::Unbounded)
923 let tlv_stream = offer.as_tlv_stream();
924 assert_eq!(offer.supported_quantity(), Quantity::Unbounded);
925 assert_eq!(tlv_stream.quantity_max, Some(0));
927 let offer = OfferBuilder::new("foo".into(), pubkey(42))
928 .supported_quantity(Quantity::Bounded(ten))
931 let tlv_stream = offer.as_tlv_stream();
932 assert_eq!(offer.supported_quantity(), Quantity::Bounded(ten));
933 assert_eq!(tlv_stream.quantity_max, Some(10));
935 let offer = OfferBuilder::new("foo".into(), pubkey(42))
936 .supported_quantity(Quantity::Bounded(ten))
937 .supported_quantity(Quantity::one())
940 let tlv_stream = offer.as_tlv_stream();
941 assert_eq!(offer.supported_quantity(), Quantity::one());
942 assert_eq!(tlv_stream.quantity_max, None);
946 fn fails_requesting_invoice_with_unknown_required_features() {
947 match OfferBuilder::new("foo".into(), pubkey(42))
948 .features_unchecked(OfferFeatures::unknown())
950 .request_invoice(vec![1; 32], pubkey(43))
952 Ok(_) => panic!("expected error"),
953 Err(e) => assert_eq!(e, SemanticError::UnknownRequiredFeatures),
958 fn parses_offer_with_chains() {
959 let offer = OfferBuilder::new("foo".into(), pubkey(42))
960 .chain(Network::Bitcoin)
961 .chain(Network::Testnet)
964 if let Err(e) = offer.to_string().parse::<Offer>() {
965 panic!("error parsing offer: {:?}", e);
970 fn parses_offer_with_amount() {
971 let offer = OfferBuilder::new("foo".into(), pubkey(42))
972 .amount(Amount::Bitcoin { amount_msats: 1000 })
975 if let Err(e) = offer.to_string().parse::<Offer>() {
976 panic!("error parsing offer: {:?}", e);
979 let mut tlv_stream = offer.as_tlv_stream();
980 tlv_stream.amount = Some(1000);
981 tlv_stream.currency = Some(b"USD");
983 let mut encoded_offer = Vec::new();
984 tlv_stream.write(&mut encoded_offer).unwrap();
986 if let Err(e) = Offer::try_from(encoded_offer) {
987 panic!("error parsing offer: {:?}", e);
990 let mut tlv_stream = offer.as_tlv_stream();
991 tlv_stream.amount = None;
992 tlv_stream.currency = Some(b"USD");
994 let mut encoded_offer = Vec::new();
995 tlv_stream.write(&mut encoded_offer).unwrap();
997 match Offer::try_from(encoded_offer) {
998 Ok(_) => panic!("expected error"),
999 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingAmount)),
1002 let mut tlv_stream = offer.as_tlv_stream();
1003 tlv_stream.amount = Some(MAX_VALUE_MSAT + 1);
1004 tlv_stream.currency = None;
1006 let mut encoded_offer = Vec::new();
1007 tlv_stream.write(&mut encoded_offer).unwrap();
1009 match Offer::try_from(encoded_offer) {
1010 Ok(_) => panic!("expected error"),
1011 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidAmount)),
1016 fn parses_offer_with_description() {
1017 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1018 if let Err(e) = offer.to_string().parse::<Offer>() {
1019 panic!("error parsing offer: {:?}", e);
1022 let mut tlv_stream = offer.as_tlv_stream();
1023 tlv_stream.description = None;
1025 let mut encoded_offer = Vec::new();
1026 tlv_stream.write(&mut encoded_offer).unwrap();
1028 match Offer::try_from(encoded_offer) {
1029 Ok(_) => panic!("expected error"),
1031 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingDescription));
1037 fn parses_offer_with_paths() {
1038 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1040 introduction_node_id: pubkey(40),
1041 blinding_point: pubkey(41),
1043 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
1044 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
1048 introduction_node_id: pubkey(40),
1049 blinding_point: pubkey(41),
1051 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
1052 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
1057 if let Err(e) = offer.to_string().parse::<Offer>() {
1058 panic!("error parsing offer: {:?}", e);
1061 let mut builder = OfferBuilder::new("foo".into(), pubkey(42));
1062 builder.offer.paths = Some(vec![]);
1064 let offer = builder.build().unwrap();
1065 if let Err(e) = offer.to_string().parse::<Offer>() {
1066 panic!("error parsing offer: {:?}", e);
1071 fn parses_offer_with_quantity() {
1072 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1073 .supported_quantity(Quantity::one())
1076 if let Err(e) = offer.to_string().parse::<Offer>() {
1077 panic!("error parsing offer: {:?}", e);
1080 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1081 .supported_quantity(Quantity::Unbounded)
1084 if let Err(e) = offer.to_string().parse::<Offer>() {
1085 panic!("error parsing offer: {:?}", e);
1088 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1089 .supported_quantity(Quantity::Bounded(NonZeroU64::new(10).unwrap()))
1092 if let Err(e) = offer.to_string().parse::<Offer>() {
1093 panic!("error parsing offer: {:?}", e);
1096 let mut tlv_stream = offer.as_tlv_stream();
1097 tlv_stream.quantity_max = Some(1);
1099 let mut encoded_offer = Vec::new();
1100 tlv_stream.write(&mut encoded_offer).unwrap();
1102 match Offer::try_from(encoded_offer) {
1103 Ok(_) => panic!("expected error"),
1105 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidQuantity));
1111 fn parses_offer_with_node_id() {
1112 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1113 if let Err(e) = offer.to_string().parse::<Offer>() {
1114 panic!("error parsing offer: {:?}", e);
1117 let mut builder = OfferBuilder::new("foo".into(), pubkey(42));
1118 builder.offer.signing_pubkey = None;
1120 let offer = builder.build().unwrap();
1121 match offer.to_string().parse::<Offer>() {
1122 Ok(_) => panic!("expected error"),
1124 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingSigningPubkey));
1130 fn fails_parsing_offer_with_extra_tlv_records() {
1131 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1133 let mut encoded_offer = Vec::new();
1134 offer.write(&mut encoded_offer).unwrap();
1135 BigSize(80).write(&mut encoded_offer).unwrap();
1136 BigSize(32).write(&mut encoded_offer).unwrap();
1137 [42u8; 32].write(&mut encoded_offer).unwrap();
1139 match Offer::try_from(encoded_offer) {
1140 Ok(_) => panic!("expected error"),
1141 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),
1148 use super::{Offer, ParseError};
1149 use bitcoin::bech32;
1150 use crate::ln::msgs::DecodeError;
1152 // TODO: Remove once test vectors are updated.
1155 fn encodes_offer_as_bech32_without_checksum() {
1156 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1157 let offer = dbg!(encoded_offer.parse::<Offer>().unwrap());
1158 let reencoded_offer = offer.to_string();
1159 dbg!(reencoded_offer.parse::<Offer>().unwrap());
1160 assert_eq!(reencoded_offer, encoded_offer);
1163 // TODO: Remove once test vectors are updated.
1166 fn parses_bech32_encoded_offers() {
1168 // BOLT 12 test vectors
1169 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1170 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1171 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1172 "lno1qcp4256ypqpq+86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qs+y",
1173 "lno1qcp4256ypqpq+ 86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+ 0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+\nsqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43l+\r\nastpwuh73k29qs+\r y",
1174 // Two blinded paths
1175 "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",
1177 for encoded_offer in &offers {
1178 if let Err(e) = encoded_offer.parse::<Offer>() {
1179 panic!("Invalid offer ({:?}): {}", e, encoded_offer);
1185 fn fails_parsing_bech32_encoded_offers_with_invalid_continuations() {
1187 // BOLT 12 test vectors
1188 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+",
1189 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+ ",
1190 "+lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1191 "+ lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1192 "ln++o1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1194 for encoded_offer in &offers {
1195 match encoded_offer.parse::<Offer>() {
1196 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1197 Err(e) => assert_eq!(e, ParseError::InvalidContinuation),
1204 fn fails_parsing_bech32_encoded_offer_with_invalid_hrp() {
1205 let encoded_offer = "lni1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1206 match encoded_offer.parse::<Offer>() {
1207 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1208 Err(e) => assert_eq!(e, ParseError::InvalidBech32Hrp),
1213 fn fails_parsing_bech32_encoded_offer_with_invalid_bech32_data() {
1214 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qso";
1215 match encoded_offer.parse::<Offer>() {
1216 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1217 Err(e) => assert_eq!(e, ParseError::Bech32(bech32::Error::InvalidChar('o'))),
1222 fn fails_parsing_bech32_encoded_offer_with_invalid_tlv_data() {
1223 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsyqqqqq";
1224 match encoded_offer.parse::<Offer>() {
1225 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1226 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),