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,
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 pub(super) 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;
224 pub(super) fn build_unchecked(self) -> Offer {
225 let mut bytes = Vec::new();
226 self.offer.write(&mut bytes).unwrap();
228 Offer { bytes, contents: self.offer }
232 /// An `Offer` is a potentially long-lived proposal for payment of a good or service.
234 /// An offer is a precursor to an [`InvoiceRequest`]. A merchant publishes an offer from which a
235 /// customer may request an [`Invoice`] for a specific quantity and using an amount sufficient to
236 /// cover that quantity (i.e., at least `quantity * amount`). See [`Offer::amount`].
238 /// Offers may be denominated in currency other than bitcoin but are ultimately paid using the
241 /// Through the use of [`BlindedPath`]s, offers provide recipient privacy.
243 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
244 /// [`Invoice`]: crate::offers::invoice::Invoice
245 #[derive(Clone, Debug, PartialEq)]
247 // The serialized offer. Needed when creating an `InvoiceRequest` if the offer contains unknown
249 pub(super) bytes: Vec<u8>,
250 pub(super) contents: OfferContents,
253 /// The contents of an [`Offer`], which may be shared with an [`InvoiceRequest`] or an [`Invoice`].
255 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
256 /// [`Invoice`]: crate::offers::invoice::Invoice
257 #[derive(Clone, Debug, PartialEq)]
258 pub(super) struct OfferContents {
259 chains: Option<Vec<ChainHash>>,
260 metadata: Option<Vec<u8>>,
261 amount: Option<Amount>,
263 features: OfferFeatures,
264 absolute_expiry: Option<Duration>,
265 issuer: Option<String>,
266 paths: Option<Vec<BlindedPath>>,
267 supported_quantity: Quantity,
268 signing_pubkey: PublicKey,
272 // TODO: Return a slice once ChainHash has constants.
273 // - https://github.com/rust-bitcoin/rust-bitcoin/pull/1283
274 // - https://github.com/rust-bitcoin/rust-bitcoin/pull/1286
275 /// The chains that may be used when paying a requested invoice (e.g., bitcoin mainnet).
276 /// Payments must be denominated in units of the minimal lightning-payable unit (e.g., msats)
277 /// for the selected chain.
278 pub fn chains(&self) -> Vec<ChainHash> {
279 self.contents.chains()
282 pub(super) fn implied_chain(&self) -> ChainHash {
283 self.contents.implied_chain()
286 /// Returns whether the given chain is supported by the offer.
287 pub fn supports_chain(&self, chain: ChainHash) -> bool {
288 self.contents.supports_chain(chain)
291 // TODO: Link to corresponding method in `InvoiceRequest`.
292 /// Opaque bytes set by the originator. Useful for authentication and validating fields since it
293 /// is reflected in `invoice_request` messages along with all the other fields from the `offer`.
294 pub fn metadata(&self) -> Option<&Vec<u8>> {
295 self.contents.metadata.as_ref()
298 /// The minimum amount required for a successful payment of a single item.
299 pub fn amount(&self) -> Option<&Amount> {
300 self.contents.amount()
303 /// A complete description of the purpose of the payment. Intended to be displayed to the user
304 /// but with the caveat that it has not been verified in any way.
305 pub fn description(&self) -> PrintableString {
306 PrintableString(&self.contents.description)
309 /// Features pertaining to the offer.
310 pub fn features(&self) -> &OfferFeatures {
311 &self.contents.features
314 /// Duration since the Unix epoch when an invoice should no longer be requested.
316 /// If `None`, the offer does not expire.
317 pub fn absolute_expiry(&self) -> Option<Duration> {
318 self.contents.absolute_expiry
321 /// Whether the offer has expired.
322 #[cfg(feature = "std")]
323 pub fn is_expired(&self) -> bool {
324 self.contents.is_expired()
327 /// The issuer of the offer, possibly beginning with `user@domain` or `domain`. Intended to be
328 /// displayed to the user but with the caveat that it has not been verified in any way.
329 pub fn issuer(&self) -> Option<PrintableString> {
330 self.contents.issuer.as_ref().map(|issuer| PrintableString(issuer.as_str()))
333 /// Paths to the recipient originating from publicly reachable nodes. Blinded paths provide
334 /// recipient privacy by obfuscating its node id.
335 pub fn paths(&self) -> &[BlindedPath] {
336 self.contents.paths.as_ref().map(|paths| paths.as_slice()).unwrap_or(&[])
339 /// The quantity of items supported.
340 pub fn supported_quantity(&self) -> Quantity {
341 self.contents.supported_quantity()
344 /// Returns whether the given quantity is valid for the offer.
345 pub fn is_valid_quantity(&self, quantity: u64) -> bool {
346 self.contents.is_valid_quantity(quantity)
349 /// Returns whether a quantity is expected in an [`InvoiceRequest`] for the offer.
351 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
352 pub fn expects_quantity(&self) -> bool {
353 self.contents.expects_quantity()
356 /// The public key used by the recipient to sign invoices.
357 pub fn signing_pubkey(&self) -> PublicKey {
358 self.contents.signing_pubkey()
361 /// Creates an [`InvoiceRequest`] for the offer with the given `metadata` and `payer_id`, which
362 /// will be reflected in the `Invoice` response.
364 /// The `metadata` is useful for including information about the derivation of `payer_id` such
365 /// that invoice response handling can be stateless. Also serves as payer-provided entropy while
366 /// hashing in the signature calculation.
368 /// This should not leak any information such as by using a simple BIP-32 derivation path.
369 /// Otherwise, payments may be correlated.
371 /// Errors if the offer contains unknown required features.
373 /// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
374 pub fn request_invoice(
375 &self, metadata: Vec<u8>, payer_id: PublicKey
376 ) -> Result<InvoiceRequestBuilder, SemanticError> {
377 if self.features().requires_unknown_bits() {
378 return Err(SemanticError::UnknownRequiredFeatures);
381 Ok(InvoiceRequestBuilder::new(self, metadata, payer_id))
385 pub(super) fn as_tlv_stream(&self) -> OfferTlvStreamRef {
386 self.contents.as_tlv_stream()
390 impl AsRef<[u8]> for Offer {
391 fn as_ref(&self) -> &[u8] {
397 pub fn chains(&self) -> Vec<ChainHash> {
398 self.chains.as_ref().cloned().unwrap_or_else(|| vec![self.implied_chain()])
401 pub fn implied_chain(&self) -> ChainHash {
402 ChainHash::using_genesis_block(Network::Bitcoin)
405 pub fn supports_chain(&self, chain: ChainHash) -> bool {
406 self.chains().contains(&chain)
409 #[cfg(feature = "std")]
410 pub(super) fn is_expired(&self) -> bool {
411 match self.absolute_expiry {
412 Some(seconds_from_epoch) => match SystemTime::UNIX_EPOCH.elapsed() {
413 Ok(elapsed) => elapsed > seconds_from_epoch,
420 pub fn amount(&self) -> Option<&Amount> {
424 pub(super) fn check_amount_msats_for_quantity(
425 &self, amount_msats: Option<u64>, quantity: Option<u64>
426 ) -> Result<(), SemanticError> {
427 let offer_amount_msats = match self.amount {
429 Some(Amount::Bitcoin { amount_msats }) => amount_msats,
430 Some(Amount::Currency { .. }) => return Err(SemanticError::UnsupportedCurrency),
433 if !self.expects_quantity() || quantity.is_some() {
434 let expected_amount_msats = offer_amount_msats.checked_mul(quantity.unwrap_or(1))
435 .ok_or(SemanticError::InvalidAmount)?;
436 let amount_msats = amount_msats.unwrap_or(expected_amount_msats);
438 if amount_msats < expected_amount_msats {
439 return Err(SemanticError::InsufficientAmount);
442 if amount_msats > MAX_VALUE_MSAT {
443 return Err(SemanticError::InvalidAmount);
450 pub fn supported_quantity(&self) -> Quantity {
451 self.supported_quantity
454 pub(super) fn check_quantity(&self, quantity: Option<u64>) -> Result<(), SemanticError> {
455 let expects_quantity = self.expects_quantity();
457 None if expects_quantity => Err(SemanticError::MissingQuantity),
458 Some(_) if !expects_quantity => Err(SemanticError::UnexpectedQuantity),
459 Some(quantity) if !self.is_valid_quantity(quantity) => {
460 Err(SemanticError::InvalidQuantity)
466 fn is_valid_quantity(&self, quantity: u64) -> bool {
467 match self.supported_quantity {
468 Quantity::Bounded(n) => quantity <= n.get(),
469 Quantity::Unbounded => quantity > 0,
470 Quantity::One => quantity == 1,
474 fn expects_quantity(&self) -> bool {
475 match self.supported_quantity {
476 Quantity::Bounded(_) => true,
477 Quantity::Unbounded => true,
478 Quantity::One => false,
482 pub(super) fn signing_pubkey(&self) -> PublicKey {
486 pub(super) fn as_tlv_stream(&self) -> OfferTlvStreamRef {
487 let (currency, amount) = match &self.amount {
488 None => (None, None),
489 Some(Amount::Bitcoin { amount_msats }) => (None, Some(*amount_msats)),
490 Some(Amount::Currency { iso4217_code, amount }) => (
491 Some(iso4217_code), Some(*amount)
496 if self.features == OfferFeatures::empty() { None } else { Some(&self.features) }
500 chains: self.chains.as_ref(),
501 metadata: self.metadata.as_ref(),
504 description: Some(&self.description),
506 absolute_expiry: self.absolute_expiry.map(|duration| duration.as_secs()),
507 paths: self.paths.as_ref(),
508 issuer: self.issuer.as_ref(),
509 quantity_max: self.supported_quantity.to_tlv_record(),
510 node_id: Some(&self.signing_pubkey),
515 impl Writeable for Offer {
516 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
517 WithoutLength(&self.bytes).write(writer)
521 impl Writeable for OfferContents {
522 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
523 self.as_tlv_stream().write(writer)
527 /// The minimum amount required for an item in an [`Offer`], denominated in either bitcoin or
528 /// another currency.
529 #[derive(Clone, Debug, PartialEq)]
531 /// An amount of bitcoin.
533 /// The amount in millisatoshi.
536 /// An amount of currency specified using ISO 4712.
538 /// The currency that the amount is denominated in.
539 iso4217_code: [u8; 3],
540 /// The amount in the currency unit adjusted by the ISO 4712 exponent (e.g., USD cents).
545 /// Quantity of items supported by an [`Offer`].
546 #[derive(Clone, Copy, Debug, PartialEq)]
548 /// Up to a specific number of items (inclusive). Use when more than one item can be requested
549 /// but is limited (e.g., because of per customer or inventory limits).
551 /// May be used with `NonZeroU64::new(1)` but prefer to use [`Quantity::One`] if only one item
554 /// One or more items. Use when more than one item can be requested without any limit.
556 /// Only one item. Use when only a single item can be requested.
561 fn to_tlv_record(&self) -> Option<u64> {
563 Quantity::Bounded(n) => Some(n.get()),
564 Quantity::Unbounded => Some(0),
565 Quantity::One => None,
570 tlv_stream!(OfferTlvStream, OfferTlvStreamRef, 1..80, {
571 (2, chains: (Vec<ChainHash>, WithoutLength)),
572 (4, metadata: (Vec<u8>, WithoutLength)),
573 (6, currency: [u8; 3]),
574 (8, amount: (u64, HighZeroBytesDroppedBigSize)),
575 (10, description: (String, WithoutLength)),
576 (12, features: (OfferFeatures, WithoutLength)),
577 (14, absolute_expiry: (u64, HighZeroBytesDroppedBigSize)),
578 (16, paths: (Vec<BlindedPath>, WithoutLength)),
579 (18, issuer: (String, WithoutLength)),
580 (20, quantity_max: (u64, HighZeroBytesDroppedBigSize)),
581 (22, node_id: PublicKey),
584 impl Bech32Encode for Offer {
585 const BECH32_HRP: &'static str = "lno";
588 impl FromStr for Offer {
589 type Err = ParseError;
591 fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err> {
592 Self::from_bech32_str(s)
596 impl TryFrom<Vec<u8>> for Offer {
597 type Error = ParseError;
599 fn try_from(bytes: Vec<u8>) -> Result<Self, Self::Error> {
600 let offer = ParsedMessage::<OfferTlvStream>::try_from(bytes)?;
601 let ParsedMessage { bytes, tlv_stream } = offer;
602 let contents = OfferContents::try_from(tlv_stream)?;
603 Ok(Offer { bytes, contents })
607 impl TryFrom<OfferTlvStream> for OfferContents {
608 type Error = SemanticError;
610 fn try_from(tlv_stream: OfferTlvStream) -> Result<Self, Self::Error> {
612 chains, metadata, currency, amount, description, features, absolute_expiry, paths,
613 issuer, quantity_max, node_id,
616 let amount = match (currency, amount) {
617 (None, None) => None,
618 (None, Some(amount_msats)) if amount_msats > MAX_VALUE_MSAT => {
619 return Err(SemanticError::InvalidAmount);
621 (None, Some(amount_msats)) => Some(Amount::Bitcoin { amount_msats }),
622 (Some(_), None) => return Err(SemanticError::MissingAmount),
623 (Some(iso4217_code), Some(amount)) => Some(Amount::Currency { iso4217_code, amount }),
626 let description = match description {
627 None => return Err(SemanticError::MissingDescription),
628 Some(description) => description,
631 let features = features.unwrap_or_else(OfferFeatures::empty);
633 let absolute_expiry = absolute_expiry
634 .map(|seconds_from_epoch| Duration::from_secs(seconds_from_epoch));
636 let supported_quantity = match quantity_max {
637 None => Quantity::One,
638 Some(0) => Quantity::Unbounded,
639 Some(n) => Quantity::Bounded(NonZeroU64::new(n).unwrap()),
642 let signing_pubkey = match node_id {
643 None => return Err(SemanticError::MissingSigningPubkey),
644 Some(node_id) => node_id,
648 chains, metadata, amount, description, features, absolute_expiry, issuer, paths,
649 supported_quantity, signing_pubkey,
654 impl core::fmt::Display for Offer {
655 fn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {
656 self.fmt_bech32_str(f)
662 use super::{Amount, Offer, OfferBuilder, OfferTlvStreamRef, Quantity};
664 use bitcoin::blockdata::constants::ChainHash;
665 use bitcoin::network::constants::Network;
666 use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
667 use core::convert::TryFrom;
668 use core::num::NonZeroU64;
669 use core::time::Duration;
670 use crate::ln::features::OfferFeatures;
671 use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
672 use crate::offers::parse::{ParseError, SemanticError};
673 use crate::onion_message::{BlindedHop, BlindedPath};
674 use crate::util::ser::{BigSize, Writeable};
675 use crate::util::string::PrintableString;
677 fn pubkey(byte: u8) -> PublicKey {
678 let secp_ctx = Secp256k1::new();
679 PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
682 fn privkey(byte: u8) -> SecretKey {
683 SecretKey::from_slice(&[byte; 32]).unwrap()
687 fn builds_offer_with_defaults() {
688 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
690 let mut buffer = Vec::new();
691 offer.write(&mut buffer).unwrap();
693 assert_eq!(offer.bytes, buffer.as_slice());
694 assert_eq!(offer.chains(), vec![ChainHash::using_genesis_block(Network::Bitcoin)]);
695 assert!(offer.supports_chain(ChainHash::using_genesis_block(Network::Bitcoin)));
696 assert_eq!(offer.metadata(), None);
697 assert_eq!(offer.amount(), None);
698 assert_eq!(offer.description(), PrintableString("foo"));
699 assert_eq!(offer.features(), &OfferFeatures::empty());
700 assert_eq!(offer.absolute_expiry(), None);
701 #[cfg(feature = "std")]
702 assert!(!offer.is_expired());
703 assert_eq!(offer.paths(), &[]);
704 assert_eq!(offer.issuer(), None);
705 assert_eq!(offer.supported_quantity(), Quantity::One);
706 assert_eq!(offer.signing_pubkey(), pubkey(42));
709 offer.as_tlv_stream(),
715 description: Some(&String::from("foo")),
717 absolute_expiry: None,
721 node_id: Some(&pubkey(42)),
725 if let Err(e) = Offer::try_from(buffer) {
726 panic!("error parsing offer: {:?}", e);
731 fn builds_offer_with_chains() {
732 let mainnet = ChainHash::using_genesis_block(Network::Bitcoin);
733 let testnet = ChainHash::using_genesis_block(Network::Testnet);
735 let offer = OfferBuilder::new("foo".into(), pubkey(42))
736 .chain(Network::Bitcoin)
739 assert!(offer.supports_chain(mainnet));
740 assert_eq!(offer.chains(), vec![mainnet]);
741 assert_eq!(offer.as_tlv_stream().chains, None);
743 let offer = OfferBuilder::new("foo".into(), pubkey(42))
744 .chain(Network::Testnet)
747 assert!(offer.supports_chain(testnet));
748 assert_eq!(offer.chains(), vec![testnet]);
749 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
751 let offer = OfferBuilder::new("foo".into(), pubkey(42))
752 .chain(Network::Testnet)
753 .chain(Network::Testnet)
756 assert!(offer.supports_chain(testnet));
757 assert_eq!(offer.chains(), vec![testnet]);
758 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
760 let offer = OfferBuilder::new("foo".into(), pubkey(42))
761 .chain(Network::Bitcoin)
762 .chain(Network::Testnet)
765 assert!(offer.supports_chain(mainnet));
766 assert!(offer.supports_chain(testnet));
767 assert_eq!(offer.chains(), vec![mainnet, testnet]);
768 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![mainnet, testnet]));
772 fn builds_offer_with_metadata() {
773 let offer = OfferBuilder::new("foo".into(), pubkey(42))
774 .metadata(vec![42; 32])
777 assert_eq!(offer.metadata(), Some(&vec![42; 32]));
778 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![42; 32]));
780 let offer = OfferBuilder::new("foo".into(), pubkey(42))
781 .metadata(vec![42; 32])
782 .metadata(vec![43; 32])
785 assert_eq!(offer.metadata(), Some(&vec![43; 32]));
786 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![43; 32]));
790 fn builds_offer_with_amount() {
791 let bitcoin_amount = Amount::Bitcoin { amount_msats: 1000 };
792 let currency_amount = Amount::Currency { iso4217_code: *b"USD", amount: 10 };
794 let offer = OfferBuilder::new("foo".into(), pubkey(42))
798 let tlv_stream = offer.as_tlv_stream();
799 assert_eq!(offer.amount(), Some(&bitcoin_amount));
800 assert_eq!(tlv_stream.amount, Some(1000));
801 assert_eq!(tlv_stream.currency, None);
803 let builder = OfferBuilder::new("foo".into(), pubkey(42))
804 .amount(currency_amount.clone());
805 let tlv_stream = builder.offer.as_tlv_stream();
806 assert_eq!(builder.offer.amount, Some(currency_amount.clone()));
807 assert_eq!(tlv_stream.amount, Some(10));
808 assert_eq!(tlv_stream.currency, Some(b"USD"));
809 match builder.build() {
810 Ok(_) => panic!("expected error"),
811 Err(e) => assert_eq!(e, SemanticError::UnsupportedCurrency),
814 let offer = OfferBuilder::new("foo".into(), pubkey(42))
815 .amount(currency_amount.clone())
816 .amount(bitcoin_amount.clone())
819 let tlv_stream = offer.as_tlv_stream();
820 assert_eq!(tlv_stream.amount, Some(1000));
821 assert_eq!(tlv_stream.currency, None);
823 let invalid_amount = Amount::Bitcoin { amount_msats: MAX_VALUE_MSAT + 1 };
824 match OfferBuilder::new("foo".into(), pubkey(42)).amount(invalid_amount).build() {
825 Ok(_) => panic!("expected error"),
826 Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
831 fn builds_offer_with_features() {
832 let offer = OfferBuilder::new("foo".into(), pubkey(42))
833 .features_unchecked(OfferFeatures::unknown())
836 assert_eq!(offer.features(), &OfferFeatures::unknown());
837 assert_eq!(offer.as_tlv_stream().features, Some(&OfferFeatures::unknown()));
839 let offer = OfferBuilder::new("foo".into(), pubkey(42))
840 .features_unchecked(OfferFeatures::unknown())
841 .features_unchecked(OfferFeatures::empty())
844 assert_eq!(offer.features(), &OfferFeatures::empty());
845 assert_eq!(offer.as_tlv_stream().features, None);
849 fn builds_offer_with_absolute_expiry() {
850 let future_expiry = Duration::from_secs(u64::max_value());
851 let past_expiry = Duration::from_secs(0);
853 let offer = OfferBuilder::new("foo".into(), pubkey(42))
854 .absolute_expiry(future_expiry)
857 #[cfg(feature = "std")]
858 assert!(!offer.is_expired());
859 assert_eq!(offer.absolute_expiry(), Some(future_expiry));
860 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(future_expiry.as_secs()));
862 let offer = OfferBuilder::new("foo".into(), pubkey(42))
863 .absolute_expiry(future_expiry)
864 .absolute_expiry(past_expiry)
867 #[cfg(feature = "std")]
868 assert!(offer.is_expired());
869 assert_eq!(offer.absolute_expiry(), Some(past_expiry));
870 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(past_expiry.as_secs()));
874 fn builds_offer_with_paths() {
877 introduction_node_id: pubkey(40),
878 blinding_point: pubkey(41),
880 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
881 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
885 introduction_node_id: pubkey(40),
886 blinding_point: pubkey(41),
888 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
889 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
894 let offer = OfferBuilder::new("foo".into(), pubkey(42))
895 .path(paths[0].clone())
896 .path(paths[1].clone())
899 let tlv_stream = offer.as_tlv_stream();
900 assert_eq!(offer.paths(), paths.as_slice());
901 assert_eq!(offer.signing_pubkey(), pubkey(42));
902 assert_ne!(pubkey(42), pubkey(44));
903 assert_eq!(tlv_stream.paths, Some(&paths));
904 assert_eq!(tlv_stream.node_id, Some(&pubkey(42)));
908 fn builds_offer_with_issuer() {
909 let offer = OfferBuilder::new("foo".into(), pubkey(42))
910 .issuer("bar".into())
913 assert_eq!(offer.issuer(), Some(PrintableString("bar")));
914 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("bar")));
916 let offer = OfferBuilder::new("foo".into(), pubkey(42))
917 .issuer("bar".into())
918 .issuer("baz".into())
921 assert_eq!(offer.issuer(), Some(PrintableString("baz")));
922 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("baz")));
926 fn builds_offer_with_supported_quantity() {
927 let one = NonZeroU64::new(1).unwrap();
928 let ten = NonZeroU64::new(10).unwrap();
930 let offer = OfferBuilder::new("foo".into(), pubkey(42))
931 .supported_quantity(Quantity::One)
934 let tlv_stream = offer.as_tlv_stream();
935 assert_eq!(offer.supported_quantity(), Quantity::One);
936 assert_eq!(tlv_stream.quantity_max, None);
938 let offer = OfferBuilder::new("foo".into(), pubkey(42))
939 .supported_quantity(Quantity::Unbounded)
942 let tlv_stream = offer.as_tlv_stream();
943 assert_eq!(offer.supported_quantity(), Quantity::Unbounded);
944 assert_eq!(tlv_stream.quantity_max, Some(0));
946 let offer = OfferBuilder::new("foo".into(), pubkey(42))
947 .supported_quantity(Quantity::Bounded(ten))
950 let tlv_stream = offer.as_tlv_stream();
951 assert_eq!(offer.supported_quantity(), Quantity::Bounded(ten));
952 assert_eq!(tlv_stream.quantity_max, Some(10));
954 let offer = OfferBuilder::new("foo".into(), pubkey(42))
955 .supported_quantity(Quantity::Bounded(one))
958 let tlv_stream = offer.as_tlv_stream();
959 assert_eq!(offer.supported_quantity(), Quantity::Bounded(one));
960 assert_eq!(tlv_stream.quantity_max, Some(1));
962 let offer = OfferBuilder::new("foo".into(), pubkey(42))
963 .supported_quantity(Quantity::Bounded(ten))
964 .supported_quantity(Quantity::One)
967 let tlv_stream = offer.as_tlv_stream();
968 assert_eq!(offer.supported_quantity(), Quantity::One);
969 assert_eq!(tlv_stream.quantity_max, None);
973 fn fails_requesting_invoice_with_unknown_required_features() {
974 match OfferBuilder::new("foo".into(), pubkey(42))
975 .features_unchecked(OfferFeatures::unknown())
977 .request_invoice(vec![1; 32], pubkey(43))
979 Ok(_) => panic!("expected error"),
980 Err(e) => assert_eq!(e, SemanticError::UnknownRequiredFeatures),
985 fn parses_offer_with_chains() {
986 let offer = OfferBuilder::new("foo".into(), pubkey(42))
987 .chain(Network::Bitcoin)
988 .chain(Network::Testnet)
991 if let Err(e) = offer.to_string().parse::<Offer>() {
992 panic!("error parsing offer: {:?}", e);
997 fn parses_offer_with_amount() {
998 let offer = OfferBuilder::new("foo".into(), pubkey(42))
999 .amount(Amount::Bitcoin { amount_msats: 1000 })
1002 if let Err(e) = offer.to_string().parse::<Offer>() {
1003 panic!("error parsing offer: {:?}", e);
1006 let mut tlv_stream = offer.as_tlv_stream();
1007 tlv_stream.amount = Some(1000);
1008 tlv_stream.currency = Some(b"USD");
1010 let mut encoded_offer = Vec::new();
1011 tlv_stream.write(&mut encoded_offer).unwrap();
1013 if let Err(e) = Offer::try_from(encoded_offer) {
1014 panic!("error parsing offer: {:?}", e);
1017 let mut tlv_stream = offer.as_tlv_stream();
1018 tlv_stream.amount = None;
1019 tlv_stream.currency = Some(b"USD");
1021 let mut encoded_offer = Vec::new();
1022 tlv_stream.write(&mut encoded_offer).unwrap();
1024 match Offer::try_from(encoded_offer) {
1025 Ok(_) => panic!("expected error"),
1026 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingAmount)),
1029 let mut tlv_stream = offer.as_tlv_stream();
1030 tlv_stream.amount = Some(MAX_VALUE_MSAT + 1);
1031 tlv_stream.currency = None;
1033 let mut encoded_offer = Vec::new();
1034 tlv_stream.write(&mut encoded_offer).unwrap();
1036 match Offer::try_from(encoded_offer) {
1037 Ok(_) => panic!("expected error"),
1038 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidAmount)),
1043 fn parses_offer_with_description() {
1044 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1045 if let Err(e) = offer.to_string().parse::<Offer>() {
1046 panic!("error parsing offer: {:?}", e);
1049 let mut tlv_stream = offer.as_tlv_stream();
1050 tlv_stream.description = None;
1052 let mut encoded_offer = Vec::new();
1053 tlv_stream.write(&mut encoded_offer).unwrap();
1055 match Offer::try_from(encoded_offer) {
1056 Ok(_) => panic!("expected error"),
1058 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingDescription));
1064 fn parses_offer_with_paths() {
1065 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1067 introduction_node_id: pubkey(40),
1068 blinding_point: pubkey(41),
1070 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
1071 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
1075 introduction_node_id: pubkey(40),
1076 blinding_point: pubkey(41),
1078 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
1079 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
1084 if let Err(e) = offer.to_string().parse::<Offer>() {
1085 panic!("error parsing offer: {:?}", e);
1088 let mut builder = OfferBuilder::new("foo".into(), pubkey(42));
1089 builder.offer.paths = Some(vec![]);
1091 let offer = builder.build().unwrap();
1092 if let Err(e) = offer.to_string().parse::<Offer>() {
1093 panic!("error parsing offer: {:?}", e);
1098 fn parses_offer_with_quantity() {
1099 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1100 .supported_quantity(Quantity::One)
1103 if let Err(e) = offer.to_string().parse::<Offer>() {
1104 panic!("error parsing offer: {:?}", e);
1107 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1108 .supported_quantity(Quantity::Unbounded)
1111 if let Err(e) = offer.to_string().parse::<Offer>() {
1112 panic!("error parsing offer: {:?}", e);
1115 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1116 .supported_quantity(Quantity::Bounded(NonZeroU64::new(10).unwrap()))
1119 if let Err(e) = offer.to_string().parse::<Offer>() {
1120 panic!("error parsing offer: {:?}", e);
1123 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1124 .supported_quantity(Quantity::Bounded(NonZeroU64::new(1).unwrap()))
1127 if let Err(e) = offer.to_string().parse::<Offer>() {
1128 panic!("error parsing offer: {:?}", e);
1133 fn parses_offer_with_node_id() {
1134 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1135 if let Err(e) = offer.to_string().parse::<Offer>() {
1136 panic!("error parsing offer: {:?}", e);
1139 let mut tlv_stream = offer.as_tlv_stream();
1140 tlv_stream.node_id = None;
1142 let mut encoded_offer = Vec::new();
1143 tlv_stream.write(&mut encoded_offer).unwrap();
1145 match Offer::try_from(encoded_offer) {
1146 Ok(_) => panic!("expected error"),
1148 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingSigningPubkey));
1154 fn fails_parsing_offer_with_extra_tlv_records() {
1155 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1157 let mut encoded_offer = Vec::new();
1158 offer.write(&mut encoded_offer).unwrap();
1159 BigSize(80).write(&mut encoded_offer).unwrap();
1160 BigSize(32).write(&mut encoded_offer).unwrap();
1161 [42u8; 32].write(&mut encoded_offer).unwrap();
1163 match Offer::try_from(encoded_offer) {
1164 Ok(_) => panic!("expected error"),
1165 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),
1172 use super::{Offer, ParseError};
1173 use bitcoin::bech32;
1174 use crate::ln::msgs::DecodeError;
1176 // TODO: Remove once test vectors are updated.
1179 fn encodes_offer_as_bech32_without_checksum() {
1180 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1181 let offer = dbg!(encoded_offer.parse::<Offer>().unwrap());
1182 let reencoded_offer = offer.to_string();
1183 dbg!(reencoded_offer.parse::<Offer>().unwrap());
1184 assert_eq!(reencoded_offer, encoded_offer);
1187 // TODO: Remove once test vectors are updated.
1190 fn parses_bech32_encoded_offers() {
1192 // BOLT 12 test vectors
1193 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1194 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1195 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1196 "lno1qcp4256ypqpq+86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qs+y",
1197 "lno1qcp4256ypqpq+ 86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+ 0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+\nsqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43l+\r\nastpwuh73k29qs+\r y",
1198 // Two blinded paths
1199 "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",
1201 for encoded_offer in &offers {
1202 if let Err(e) = encoded_offer.parse::<Offer>() {
1203 panic!("Invalid offer ({:?}): {}", e, encoded_offer);
1209 fn fails_parsing_bech32_encoded_offers_with_invalid_continuations() {
1211 // BOLT 12 test vectors
1212 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+",
1213 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+ ",
1214 "+lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1215 "+ lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1216 "ln++o1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1218 for encoded_offer in &offers {
1219 match encoded_offer.parse::<Offer>() {
1220 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1221 Err(e) => assert_eq!(e, ParseError::InvalidContinuation),
1228 fn fails_parsing_bech32_encoded_offer_with_invalid_hrp() {
1229 let encoded_offer = "lni1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1230 match encoded_offer.parse::<Offer>() {
1231 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1232 Err(e) => assert_eq!(e, ParseError::InvalidBech32Hrp),
1237 fn fails_parsing_bech32_encoded_offer_with_invalid_bech32_data() {
1238 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qso";
1239 match encoded_offer.parse::<Offer>() {
1240 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1241 Err(e) => assert_eq!(e, ParseError::Bech32(bech32::Error::InvalidChar('o'))),
1246 fn fails_parsing_bech32_encoded_offer_with_invalid_tlv_data() {
1247 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsyqqqqq";
1248 match encoded_offer.parse::<Offer>() {
1249 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1250 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),