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)]
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)]
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 * quantity.unwrap_or(1);
435 let amount_msats = amount_msats.unwrap_or(expected_amount_msats);
437 if amount_msats < expected_amount_msats {
438 return Err(SemanticError::InsufficientAmount);
441 if amount_msats > MAX_VALUE_MSAT {
442 return Err(SemanticError::InvalidAmount);
449 pub fn supported_quantity(&self) -> Quantity {
450 self.supported_quantity
453 pub(super) fn check_quantity(&self, quantity: Option<u64>) -> Result<(), SemanticError> {
454 let expects_quantity = self.expects_quantity();
456 None if expects_quantity => Err(SemanticError::MissingQuantity),
457 Some(_) if !expects_quantity => Err(SemanticError::UnexpectedQuantity),
458 Some(quantity) if !self.is_valid_quantity(quantity) => {
459 Err(SemanticError::InvalidQuantity)
465 fn is_valid_quantity(&self, quantity: u64) -> bool {
466 match self.supported_quantity {
467 Quantity::Bounded(n) => {
470 else { quantity > 0 && quantity <= n }
472 Quantity::Unbounded => quantity > 0,
476 fn expects_quantity(&self) -> bool {
477 match self.supported_quantity {
478 Quantity::Bounded(n) => n.get() != 1,
479 Quantity::Unbounded => true,
483 pub(super) fn signing_pubkey(&self) -> PublicKey {
487 pub(super) fn as_tlv_stream(&self) -> OfferTlvStreamRef {
488 let (currency, amount) = match &self.amount {
489 None => (None, None),
490 Some(Amount::Bitcoin { amount_msats }) => (None, Some(*amount_msats)),
491 Some(Amount::Currency { iso4217_code, amount }) => (
492 Some(iso4217_code), Some(*amount)
497 if self.features == OfferFeatures::empty() { None } else { Some(&self.features) }
501 chains: self.chains.as_ref(),
502 metadata: self.metadata.as_ref(),
505 description: Some(&self.description),
507 absolute_expiry: self.absolute_expiry.map(|duration| duration.as_secs()),
508 paths: self.paths.as_ref(),
509 issuer: self.issuer.as_ref(),
510 quantity_max: self.supported_quantity.to_tlv_record(),
511 node_id: Some(&self.signing_pubkey),
516 impl Writeable for Offer {
517 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
518 WithoutLength(&self.bytes).write(writer)
522 impl Writeable for OfferContents {
523 fn write<W: Writer>(&self, writer: &mut W) -> Result<(), io::Error> {
524 self.as_tlv_stream().write(writer)
528 /// The minimum amount required for an item in an [`Offer`], denominated in either bitcoin or
529 /// another currency.
530 #[derive(Clone, Debug, PartialEq)]
532 /// An amount of bitcoin.
534 /// The amount in millisatoshi.
537 /// An amount of currency specified using ISO 4712.
539 /// The currency that the amount is denominated in.
540 iso4217_code: CurrencyCode,
541 /// The amount in the currency unit adjusted by the ISO 4712 exponent (e.g., USD cents).
546 /// An ISO 4712 three-letter currency code (e.g., USD).
547 pub type CurrencyCode = [u8; 3];
549 /// Quantity of items supported by an [`Offer`].
550 #[derive(Clone, Copy, Debug, PartialEq)]
552 /// Up to a specific number of items (inclusive).
554 /// One or more items.
559 /// The default quantity of one.
560 pub fn one() -> Self {
561 Quantity::Bounded(NonZeroU64::new(1).unwrap())
564 fn to_tlv_record(&self) -> Option<u64> {
566 Quantity::Bounded(n) => {
568 if n == 1 { None } else { Some(n) }
570 Quantity::Unbounded => Some(0),
575 tlv_stream!(OfferTlvStream, OfferTlvStreamRef, 1..80, {
576 (2, chains: (Vec<ChainHash>, WithoutLength)),
577 (4, metadata: (Vec<u8>, WithoutLength)),
578 (6, currency: CurrencyCode),
579 (8, amount: (u64, HighZeroBytesDroppedBigSize)),
580 (10, description: (String, WithoutLength)),
581 (12, features: (OfferFeatures, WithoutLength)),
582 (14, absolute_expiry: (u64, HighZeroBytesDroppedBigSize)),
583 (16, paths: (Vec<BlindedPath>, WithoutLength)),
584 (18, issuer: (String, WithoutLength)),
585 (20, quantity_max: (u64, HighZeroBytesDroppedBigSize)),
586 (22, node_id: PublicKey),
589 impl Bech32Encode for Offer {
590 const BECH32_HRP: &'static str = "lno";
593 impl FromStr for Offer {
594 type Err = ParseError;
596 fn from_str(s: &str) -> Result<Self, <Self as FromStr>::Err> {
597 Self::from_bech32_str(s)
601 impl TryFrom<Vec<u8>> for Offer {
602 type Error = ParseError;
604 fn try_from(bytes: Vec<u8>) -> Result<Self, Self::Error> {
605 let offer = ParsedMessage::<OfferTlvStream>::try_from(bytes)?;
606 let ParsedMessage { bytes, tlv_stream } = offer;
607 let contents = OfferContents::try_from(tlv_stream)?;
608 Ok(Offer { bytes, contents })
612 impl TryFrom<OfferTlvStream> for OfferContents {
613 type Error = SemanticError;
615 fn try_from(tlv_stream: OfferTlvStream) -> Result<Self, Self::Error> {
617 chains, metadata, currency, amount, description, features, absolute_expiry, paths,
618 issuer, quantity_max, node_id,
621 let amount = match (currency, amount) {
622 (None, None) => None,
623 (None, Some(amount_msats)) if amount_msats > MAX_VALUE_MSAT => {
624 return Err(SemanticError::InvalidAmount);
626 (None, Some(amount_msats)) => Some(Amount::Bitcoin { amount_msats }),
627 (Some(_), None) => return Err(SemanticError::MissingAmount),
628 (Some(iso4217_code), Some(amount)) => Some(Amount::Currency { iso4217_code, amount }),
631 let description = match description {
632 None => return Err(SemanticError::MissingDescription),
633 Some(description) => description,
636 let features = features.unwrap_or_else(OfferFeatures::empty);
638 let absolute_expiry = absolute_expiry
639 .map(|seconds_from_epoch| Duration::from_secs(seconds_from_epoch));
641 let supported_quantity = match quantity_max {
642 None => Quantity::one(),
643 Some(0) => Quantity::Unbounded,
644 Some(1) => return Err(SemanticError::InvalidQuantity),
645 Some(n) => Quantity::Bounded(NonZeroU64::new(n).unwrap()),
648 let signing_pubkey = match node_id {
649 None => return Err(SemanticError::MissingSigningPubkey),
650 Some(node_id) => node_id,
654 chains, metadata, amount, description, features, absolute_expiry, issuer, paths,
655 supported_quantity, signing_pubkey,
660 impl core::fmt::Display for Offer {
661 fn fmt(&self, f: &mut core::fmt::Formatter) -> Result<(), core::fmt::Error> {
662 self.fmt_bech32_str(f)
668 use super::{Amount, Offer, OfferBuilder, OfferTlvStreamRef, Quantity};
670 use bitcoin::blockdata::constants::ChainHash;
671 use bitcoin::network::constants::Network;
672 use bitcoin::secp256k1::{PublicKey, Secp256k1, SecretKey};
673 use core::convert::TryFrom;
674 use core::num::NonZeroU64;
675 use core::time::Duration;
676 use crate::ln::features::OfferFeatures;
677 use crate::ln::msgs::{DecodeError, MAX_VALUE_MSAT};
678 use crate::offers::parse::{ParseError, SemanticError};
679 use crate::onion_message::{BlindedHop, BlindedPath};
680 use crate::util::ser::{BigSize, Writeable};
681 use crate::util::string::PrintableString;
683 fn pubkey(byte: u8) -> PublicKey {
684 let secp_ctx = Secp256k1::new();
685 PublicKey::from_secret_key(&secp_ctx, &privkey(byte))
688 fn privkey(byte: u8) -> SecretKey {
689 SecretKey::from_slice(&[byte; 32]).unwrap()
693 fn builds_offer_with_defaults() {
694 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
696 let mut buffer = Vec::new();
697 offer.write(&mut buffer).unwrap();
699 assert_eq!(offer.bytes, buffer.as_slice());
700 assert_eq!(offer.chains(), vec![ChainHash::using_genesis_block(Network::Bitcoin)]);
701 assert!(offer.supports_chain(ChainHash::using_genesis_block(Network::Bitcoin)));
702 assert_eq!(offer.metadata(), None);
703 assert_eq!(offer.amount(), None);
704 assert_eq!(offer.description(), PrintableString("foo"));
705 assert_eq!(offer.features(), &OfferFeatures::empty());
706 assert_eq!(offer.absolute_expiry(), None);
707 #[cfg(feature = "std")]
708 assert!(!offer.is_expired());
709 assert_eq!(offer.paths(), &[]);
710 assert_eq!(offer.issuer(), None);
711 assert_eq!(offer.supported_quantity(), Quantity::one());
712 assert_eq!(offer.signing_pubkey(), pubkey(42));
715 offer.as_tlv_stream(),
721 description: Some(&String::from("foo")),
723 absolute_expiry: None,
727 node_id: Some(&pubkey(42)),
731 if let Err(e) = Offer::try_from(buffer) {
732 panic!("error parsing offer: {:?}", e);
737 fn builds_offer_with_chains() {
738 let mainnet = ChainHash::using_genesis_block(Network::Bitcoin);
739 let testnet = ChainHash::using_genesis_block(Network::Testnet);
741 let offer = OfferBuilder::new("foo".into(), pubkey(42))
742 .chain(Network::Bitcoin)
745 assert!(offer.supports_chain(mainnet));
746 assert_eq!(offer.chains(), vec![mainnet]);
747 assert_eq!(offer.as_tlv_stream().chains, None);
749 let offer = OfferBuilder::new("foo".into(), pubkey(42))
750 .chain(Network::Testnet)
753 assert!(offer.supports_chain(testnet));
754 assert_eq!(offer.chains(), vec![testnet]);
755 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
757 let offer = OfferBuilder::new("foo".into(), pubkey(42))
758 .chain(Network::Testnet)
759 .chain(Network::Testnet)
762 assert!(offer.supports_chain(testnet));
763 assert_eq!(offer.chains(), vec![testnet]);
764 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![testnet]));
766 let offer = OfferBuilder::new("foo".into(), pubkey(42))
767 .chain(Network::Bitcoin)
768 .chain(Network::Testnet)
771 assert!(offer.supports_chain(mainnet));
772 assert!(offer.supports_chain(testnet));
773 assert_eq!(offer.chains(), vec![mainnet, testnet]);
774 assert_eq!(offer.as_tlv_stream().chains, Some(&vec![mainnet, testnet]));
778 fn builds_offer_with_metadata() {
779 let offer = OfferBuilder::new("foo".into(), pubkey(42))
780 .metadata(vec![42; 32])
783 assert_eq!(offer.metadata(), Some(&vec![42; 32]));
784 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![42; 32]));
786 let offer = OfferBuilder::new("foo".into(), pubkey(42))
787 .metadata(vec![42; 32])
788 .metadata(vec![43; 32])
791 assert_eq!(offer.metadata(), Some(&vec![43; 32]));
792 assert_eq!(offer.as_tlv_stream().metadata, Some(&vec![43; 32]));
796 fn builds_offer_with_amount() {
797 let bitcoin_amount = Amount::Bitcoin { amount_msats: 1000 };
798 let currency_amount = Amount::Currency { iso4217_code: *b"USD", amount: 10 };
800 let offer = OfferBuilder::new("foo".into(), pubkey(42))
804 let tlv_stream = offer.as_tlv_stream();
805 assert_eq!(offer.amount(), Some(&bitcoin_amount));
806 assert_eq!(tlv_stream.amount, Some(1000));
807 assert_eq!(tlv_stream.currency, None);
809 let builder = OfferBuilder::new("foo".into(), pubkey(42))
810 .amount(currency_amount.clone());
811 let tlv_stream = builder.offer.as_tlv_stream();
812 assert_eq!(builder.offer.amount, Some(currency_amount.clone()));
813 assert_eq!(tlv_stream.amount, Some(10));
814 assert_eq!(tlv_stream.currency, Some(b"USD"));
815 match builder.build() {
816 Ok(_) => panic!("expected error"),
817 Err(e) => assert_eq!(e, SemanticError::UnsupportedCurrency),
820 let offer = OfferBuilder::new("foo".into(), pubkey(42))
821 .amount(currency_amount.clone())
822 .amount(bitcoin_amount.clone())
825 let tlv_stream = offer.as_tlv_stream();
826 assert_eq!(tlv_stream.amount, Some(1000));
827 assert_eq!(tlv_stream.currency, None);
829 let invalid_amount = Amount::Bitcoin { amount_msats: MAX_VALUE_MSAT + 1 };
830 match OfferBuilder::new("foo".into(), pubkey(42)).amount(invalid_amount).build() {
831 Ok(_) => panic!("expected error"),
832 Err(e) => assert_eq!(e, SemanticError::InvalidAmount),
837 fn builds_offer_with_features() {
838 let offer = OfferBuilder::new("foo".into(), pubkey(42))
839 .features_unchecked(OfferFeatures::unknown())
842 assert_eq!(offer.features(), &OfferFeatures::unknown());
843 assert_eq!(offer.as_tlv_stream().features, Some(&OfferFeatures::unknown()));
845 let offer = OfferBuilder::new("foo".into(), pubkey(42))
846 .features_unchecked(OfferFeatures::unknown())
847 .features_unchecked(OfferFeatures::empty())
850 assert_eq!(offer.features(), &OfferFeatures::empty());
851 assert_eq!(offer.as_tlv_stream().features, None);
855 fn builds_offer_with_absolute_expiry() {
856 let future_expiry = Duration::from_secs(u64::max_value());
857 let past_expiry = Duration::from_secs(0);
859 let offer = OfferBuilder::new("foo".into(), pubkey(42))
860 .absolute_expiry(future_expiry)
863 #[cfg(feature = "std")]
864 assert!(!offer.is_expired());
865 assert_eq!(offer.absolute_expiry(), Some(future_expiry));
866 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(future_expiry.as_secs()));
868 let offer = OfferBuilder::new("foo".into(), pubkey(42))
869 .absolute_expiry(future_expiry)
870 .absolute_expiry(past_expiry)
873 #[cfg(feature = "std")]
874 assert!(offer.is_expired());
875 assert_eq!(offer.absolute_expiry(), Some(past_expiry));
876 assert_eq!(offer.as_tlv_stream().absolute_expiry, Some(past_expiry.as_secs()));
880 fn builds_offer_with_paths() {
883 introduction_node_id: pubkey(40),
884 blinding_point: pubkey(41),
886 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
887 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
891 introduction_node_id: pubkey(40),
892 blinding_point: pubkey(41),
894 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
895 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
900 let offer = OfferBuilder::new("foo".into(), pubkey(42))
901 .path(paths[0].clone())
902 .path(paths[1].clone())
905 let tlv_stream = offer.as_tlv_stream();
906 assert_eq!(offer.paths(), paths.as_slice());
907 assert_eq!(offer.signing_pubkey(), pubkey(42));
908 assert_ne!(pubkey(42), pubkey(44));
909 assert_eq!(tlv_stream.paths, Some(&paths));
910 assert_eq!(tlv_stream.node_id, Some(&pubkey(42)));
914 fn builds_offer_with_issuer() {
915 let offer = OfferBuilder::new("foo".into(), pubkey(42))
916 .issuer("bar".into())
919 assert_eq!(offer.issuer(), Some(PrintableString("bar")));
920 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("bar")));
922 let offer = OfferBuilder::new("foo".into(), pubkey(42))
923 .issuer("bar".into())
924 .issuer("baz".into())
927 assert_eq!(offer.issuer(), Some(PrintableString("baz")));
928 assert_eq!(offer.as_tlv_stream().issuer, Some(&String::from("baz")));
932 fn builds_offer_with_supported_quantity() {
933 let ten = NonZeroU64::new(10).unwrap();
935 let offer = OfferBuilder::new("foo".into(), pubkey(42))
936 .supported_quantity(Quantity::one())
939 let tlv_stream = offer.as_tlv_stream();
940 assert_eq!(offer.supported_quantity(), Quantity::one());
941 assert_eq!(tlv_stream.quantity_max, None);
943 let offer = OfferBuilder::new("foo".into(), pubkey(42))
944 .supported_quantity(Quantity::Unbounded)
947 let tlv_stream = offer.as_tlv_stream();
948 assert_eq!(offer.supported_quantity(), Quantity::Unbounded);
949 assert_eq!(tlv_stream.quantity_max, Some(0));
951 let offer = OfferBuilder::new("foo".into(), pubkey(42))
952 .supported_quantity(Quantity::Bounded(ten))
955 let tlv_stream = offer.as_tlv_stream();
956 assert_eq!(offer.supported_quantity(), Quantity::Bounded(ten));
957 assert_eq!(tlv_stream.quantity_max, Some(10));
959 let offer = OfferBuilder::new("foo".into(), pubkey(42))
960 .supported_quantity(Quantity::Bounded(ten))
961 .supported_quantity(Quantity::one())
964 let tlv_stream = offer.as_tlv_stream();
965 assert_eq!(offer.supported_quantity(), Quantity::one());
966 assert_eq!(tlv_stream.quantity_max, None);
970 fn fails_requesting_invoice_with_unknown_required_features() {
971 match OfferBuilder::new("foo".into(), pubkey(42))
972 .features_unchecked(OfferFeatures::unknown())
974 .request_invoice(vec![1; 32], pubkey(43))
976 Ok(_) => panic!("expected error"),
977 Err(e) => assert_eq!(e, SemanticError::UnknownRequiredFeatures),
982 fn parses_offer_with_chains() {
983 let offer = OfferBuilder::new("foo".into(), pubkey(42))
984 .chain(Network::Bitcoin)
985 .chain(Network::Testnet)
988 if let Err(e) = offer.to_string().parse::<Offer>() {
989 panic!("error parsing offer: {:?}", e);
994 fn parses_offer_with_amount() {
995 let offer = OfferBuilder::new("foo".into(), pubkey(42))
996 .amount(Amount::Bitcoin { amount_msats: 1000 })
999 if let Err(e) = offer.to_string().parse::<Offer>() {
1000 panic!("error parsing offer: {:?}", e);
1003 let mut tlv_stream = offer.as_tlv_stream();
1004 tlv_stream.amount = Some(1000);
1005 tlv_stream.currency = Some(b"USD");
1007 let mut encoded_offer = Vec::new();
1008 tlv_stream.write(&mut encoded_offer).unwrap();
1010 if let Err(e) = Offer::try_from(encoded_offer) {
1011 panic!("error parsing offer: {:?}", e);
1014 let mut tlv_stream = offer.as_tlv_stream();
1015 tlv_stream.amount = None;
1016 tlv_stream.currency = Some(b"USD");
1018 let mut encoded_offer = Vec::new();
1019 tlv_stream.write(&mut encoded_offer).unwrap();
1021 match Offer::try_from(encoded_offer) {
1022 Ok(_) => panic!("expected error"),
1023 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingAmount)),
1026 let mut tlv_stream = offer.as_tlv_stream();
1027 tlv_stream.amount = Some(MAX_VALUE_MSAT + 1);
1028 tlv_stream.currency = None;
1030 let mut encoded_offer = Vec::new();
1031 tlv_stream.write(&mut encoded_offer).unwrap();
1033 match Offer::try_from(encoded_offer) {
1034 Ok(_) => panic!("expected error"),
1035 Err(e) => assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidAmount)),
1040 fn parses_offer_with_description() {
1041 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1042 if let Err(e) = offer.to_string().parse::<Offer>() {
1043 panic!("error parsing offer: {:?}", e);
1046 let mut tlv_stream = offer.as_tlv_stream();
1047 tlv_stream.description = None;
1049 let mut encoded_offer = Vec::new();
1050 tlv_stream.write(&mut encoded_offer).unwrap();
1052 match Offer::try_from(encoded_offer) {
1053 Ok(_) => panic!("expected error"),
1055 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingDescription));
1061 fn parses_offer_with_paths() {
1062 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1064 introduction_node_id: pubkey(40),
1065 blinding_point: pubkey(41),
1067 BlindedHop { blinded_node_id: pubkey(43), encrypted_payload: vec![0; 43] },
1068 BlindedHop { blinded_node_id: pubkey(44), encrypted_payload: vec![0; 44] },
1072 introduction_node_id: pubkey(40),
1073 blinding_point: pubkey(41),
1075 BlindedHop { blinded_node_id: pubkey(45), encrypted_payload: vec![0; 45] },
1076 BlindedHop { blinded_node_id: pubkey(46), encrypted_payload: vec![0; 46] },
1081 if let Err(e) = offer.to_string().parse::<Offer>() {
1082 panic!("error parsing offer: {:?}", e);
1085 let mut builder = OfferBuilder::new("foo".into(), pubkey(42));
1086 builder.offer.paths = Some(vec![]);
1088 let offer = builder.build().unwrap();
1089 if let Err(e) = offer.to_string().parse::<Offer>() {
1090 panic!("error parsing offer: {:?}", e);
1095 fn parses_offer_with_quantity() {
1096 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1097 .supported_quantity(Quantity::one())
1100 if let Err(e) = offer.to_string().parse::<Offer>() {
1101 panic!("error parsing offer: {:?}", e);
1104 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1105 .supported_quantity(Quantity::Unbounded)
1108 if let Err(e) = offer.to_string().parse::<Offer>() {
1109 panic!("error parsing offer: {:?}", e);
1112 let offer = OfferBuilder::new("foo".into(), pubkey(42))
1113 .supported_quantity(Quantity::Bounded(NonZeroU64::new(10).unwrap()))
1116 if let Err(e) = offer.to_string().parse::<Offer>() {
1117 panic!("error parsing offer: {:?}", e);
1120 let mut tlv_stream = offer.as_tlv_stream();
1121 tlv_stream.quantity_max = Some(1);
1123 let mut encoded_offer = Vec::new();
1124 tlv_stream.write(&mut encoded_offer).unwrap();
1126 match Offer::try_from(encoded_offer) {
1127 Ok(_) => panic!("expected error"),
1129 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::InvalidQuantity));
1135 fn parses_offer_with_node_id() {
1136 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1137 if let Err(e) = offer.to_string().parse::<Offer>() {
1138 panic!("error parsing offer: {:?}", e);
1141 let mut tlv_stream = offer.as_tlv_stream();
1142 tlv_stream.node_id = None;
1144 let mut encoded_offer = Vec::new();
1145 tlv_stream.write(&mut encoded_offer).unwrap();
1147 match Offer::try_from(encoded_offer) {
1148 Ok(_) => panic!("expected error"),
1150 assert_eq!(e, ParseError::InvalidSemantics(SemanticError::MissingSigningPubkey));
1156 fn fails_parsing_offer_with_extra_tlv_records() {
1157 let offer = OfferBuilder::new("foo".into(), pubkey(42)).build().unwrap();
1159 let mut encoded_offer = Vec::new();
1160 offer.write(&mut encoded_offer).unwrap();
1161 BigSize(80).write(&mut encoded_offer).unwrap();
1162 BigSize(32).write(&mut encoded_offer).unwrap();
1163 [42u8; 32].write(&mut encoded_offer).unwrap();
1165 match Offer::try_from(encoded_offer) {
1166 Ok(_) => panic!("expected error"),
1167 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),
1174 use super::{Offer, ParseError};
1175 use bitcoin::bech32;
1176 use crate::ln::msgs::DecodeError;
1178 // TODO: Remove once test vectors are updated.
1181 fn encodes_offer_as_bech32_without_checksum() {
1182 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1183 let offer = dbg!(encoded_offer.parse::<Offer>().unwrap());
1184 let reencoded_offer = offer.to_string();
1185 dbg!(reencoded_offer.parse::<Offer>().unwrap());
1186 assert_eq!(reencoded_offer, encoded_offer);
1189 // TODO: Remove once test vectors are updated.
1192 fn parses_bech32_encoded_offers() {
1194 // BOLT 12 test vectors
1195 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1196 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1197 "l+no1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1198 "lno1qcp4256ypqpq+86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qs+y",
1199 "lno1qcp4256ypqpq+ 86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn0+ 0fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0+\nsqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43l+\r\nastpwuh73k29qs+\r y",
1200 // Two blinded paths
1201 "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",
1203 for encoded_offer in &offers {
1204 if let Err(e) = encoded_offer.parse::<Offer>() {
1205 panic!("Invalid offer ({:?}): {}", e, encoded_offer);
1211 fn fails_parsing_bech32_encoded_offers_with_invalid_continuations() {
1213 // BOLT 12 test vectors
1214 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+",
1215 "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy+ ",
1216 "+lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1217 "+ lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1218 "ln++o1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy",
1220 for encoded_offer in &offers {
1221 match encoded_offer.parse::<Offer>() {
1222 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1223 Err(e) => assert_eq!(e, ParseError::InvalidContinuation),
1230 fn fails_parsing_bech32_encoded_offer_with_invalid_hrp() {
1231 let encoded_offer = "lni1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsy";
1232 match encoded_offer.parse::<Offer>() {
1233 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1234 Err(e) => assert_eq!(e, ParseError::InvalidBech32Hrp),
1239 fn fails_parsing_bech32_encoded_offer_with_invalid_bech32_data() {
1240 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qso";
1241 match encoded_offer.parse::<Offer>() {
1242 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1243 Err(e) => assert_eq!(e, ParseError::Bech32(bech32::Error::InvalidChar('o'))),
1248 fn fails_parsing_bech32_encoded_offer_with_invalid_tlv_data() {
1249 let encoded_offer = "lno1qcp4256ypqpq86q2pucnq42ngssx2an9wfujqerp0y2pqun4wd68jtn00fkxzcnn9ehhyec6qgqsz83qfwdpl28qqmc78ymlvhmxcsywdk5wrjnj36jryg488qwlrnzyjczlqsp9nyu4phcg6dqhlhzgxagfu7zh3d9re0sqp9ts2yfugvnnm9gxkcnnnkdpa084a6t520h5zhkxsdnghvpukvd43lastpwuh73k29qsyqqqqq";
1250 match encoded_offer.parse::<Offer>() {
1251 Ok(_) => panic!("Valid offer: {}", encoded_offer),
1252 Err(e) => assert_eq!(e, ParseError::Decode(DecodeError::InvalidValue)),