1 // Prefix these with `rustdoc::` when we update our MSRV to be >= 1.52 to remove warnings.
2 #![deny(broken_intra_doc_links)]
3 #![deny(private_intra_doc_links)]
6 #![deny(non_upper_case_globals)]
7 #![deny(non_camel_case_types)]
8 #![deny(non_snake_case)]
11 #![cfg_attr(docsrs, feature(doc_auto_cfg))]
13 #![cfg_attr(feature = "strict", deny(warnings))]
14 #![cfg_attr(all(not(feature = "std"), not(test)), no_std)]
16 //! This crate provides data structures to represent
17 //! [lightning BOLT11](https://github.com/lightning/bolts/blob/master/11-payment-encoding.md)
18 //! invoices and functions to create, encode and decode these. If you just want to use the standard
19 //! en-/decoding functionality this should get you started:
21 //! * For parsing use `str::parse::<Invoice>(&self)` (see the docs of `impl FromStr for Invoice`)
22 //! * For constructing invoices use the `InvoiceBuilder`
23 //! * For serializing invoices use the `Display`/`ToString` traits
25 #[cfg(not(any(feature = "std", feature = "no-std")))]
26 compile_error!("at least one of the `std` or `no-std` features must be enabled");
31 pub(crate) mod time_utils;
34 extern crate bitcoin_hashes;
35 #[macro_use] extern crate lightning;
36 extern crate num_traits;
37 extern crate secp256k1;
39 #[cfg(any(test, feature = "std"))]
41 #[cfg(feature = "serde")]
44 #[cfg(feature = "std")]
45 use std::time::SystemTime;
48 use bitcoin_hashes::Hash;
49 use bitcoin_hashes::sha256;
50 use lightning::ln::PaymentSecret;
51 use lightning::ln::features::InvoiceFeatures;
52 #[cfg(any(doc, test))]
53 use lightning::routing::gossip::RoutingFees;
54 use lightning::routing::router::RouteHint;
55 use lightning::util::invoice::construct_invoice_preimage;
57 use secp256k1::PublicKey;
58 use secp256k1::{Message, Secp256k1};
59 use secp256k1::ecdsa::RecoverableSignature;
61 use core::fmt::{Display, Formatter, self};
62 use core::iter::FilterMap;
63 use core::num::ParseIntError;
65 use core::slice::Iter;
66 use core::time::Duration;
69 #[cfg(feature = "serde")]
70 use serde::{Deserialize, Deserializer,Serialize, Serializer, de::Error};
77 #[cfg(feature = "hashbrown")]
78 extern crate hashbrown;
80 pub use alloc::{vec, vec::Vec, string::String, collections::VecDeque, boxed::Box};
81 #[cfg(not(feature = "hashbrown"))]
82 pub use std::collections::{HashMap, HashSet, hash_map};
83 #[cfg(feature = "hashbrown")]
84 pub use self::hashbrown::{HashMap, HashSet, hash_map};
86 pub use alloc::string::ToString;
89 use crate::prelude::*;
91 /// Sync compat for std/no_std
92 #[cfg(feature = "std")]
94 pub use ::std::sync::{Mutex, MutexGuard};
97 /// Sync compat for std/no_std
98 #[cfg(not(feature = "std"))]
101 /// Errors that indicate what is wrong with the invoice. They have some granularity for debug
102 /// reasons, but should generally result in an "invalid BOLT11 invoice" message for the user.
103 #[allow(missing_docs)]
104 #[derive(PartialEq, Eq, Debug, Clone)]
105 pub enum ParseError {
106 Bech32Error(bech32::Error),
107 ParseAmountError(ParseIntError),
108 MalformedSignature(secp256k1::Error),
114 UnexpectedEndOfTaggedFields,
115 DescriptionDecodeError(str::Utf8Error),
117 IntegerOverflowError,
118 InvalidSegWitProgramLength,
119 InvalidPubKeyHashLength,
120 InvalidScriptHashLength,
122 InvalidSliceLength(String),
124 /// Not an error, but used internally to signal that a part of the invoice should be ignored
125 /// according to BOLT11
129 /// Indicates that something went wrong while parsing or validating the invoice. Parsing errors
130 /// should be mostly seen as opaque and are only there for debugging reasons. Semantic errors
131 /// like wrong signatures, missing fields etc. could mean that someone tampered with the invoice.
132 #[derive(PartialEq, Eq, Debug, Clone)]
133 pub enum ParseOrSemanticError {
134 /// The invoice couldn't be decoded
135 ParseError(ParseError),
137 /// The invoice could be decoded but violates the BOLT11 standard
138 SemanticError(crate::SemanticError),
141 /// The number of bits used to represent timestamps as defined in BOLT 11.
142 const TIMESTAMP_BITS: usize = 35;
144 /// The maximum timestamp as [`Duration::as_secs`] since the Unix epoch allowed by [`BOLT 11`].
146 /// [BOLT 11]: https://github.com/lightning/bolts/blob/master/11-payment-encoding.md
147 pub const MAX_TIMESTAMP: u64 = (1 << TIMESTAMP_BITS) - 1;
149 /// Default expiry time as defined by [BOLT 11].
151 /// [BOLT 11]: https://github.com/lightning/bolts/blob/master/11-payment-encoding.md
152 pub const DEFAULT_EXPIRY_TIME: u64 = 3600;
154 /// Default minimum final CLTV expiry as defined by [BOLT 11].
156 /// Note that this is *not* the same value as rust-lightning's minimum CLTV expiry, which is
157 /// provided in [`MIN_FINAL_CLTV_EXPIRY_DELTA`].
159 /// [BOLT 11]: https://github.com/lightning/bolts/blob/master/11-payment-encoding.md
160 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
161 pub const DEFAULT_MIN_FINAL_CLTV_EXPIRY_DELTA: u64 = 18;
163 /// Builder for `Invoice`s. It's the most convenient and advised way to use this library. It ensures
164 /// that only a semantically and syntactically correct Invoice can be built using it.
167 /// extern crate secp256k1;
168 /// extern crate lightning;
169 /// extern crate lightning_invoice;
170 /// extern crate bitcoin_hashes;
172 /// use bitcoin_hashes::Hash;
173 /// use bitcoin_hashes::sha256;
175 /// use secp256k1::Secp256k1;
176 /// use secp256k1::SecretKey;
178 /// use lightning::ln::PaymentSecret;
180 /// use lightning_invoice::{Currency, InvoiceBuilder};
182 /// # #[cfg(not(feature = "std"))]
184 /// # #[cfg(feature = "std")]
186 /// let private_key = SecretKey::from_slice(
188 /// 0xe1, 0x26, 0xf6, 0x8f, 0x7e, 0xaf, 0xcc, 0x8b, 0x74, 0xf5, 0x4d, 0x26, 0x9f,
189 /// 0xe2, 0x06, 0xbe, 0x71, 0x50, 0x00, 0xf9, 0x4d, 0xac, 0x06, 0x7d, 0x1c, 0x04,
190 /// 0xa8, 0xca, 0x3b, 0x2d, 0xb7, 0x34
194 /// let payment_hash = sha256::Hash::from_slice(&[0; 32][..]).unwrap();
195 /// let payment_secret = PaymentSecret([42u8; 32]);
197 /// let invoice = InvoiceBuilder::new(Currency::Bitcoin)
198 /// .description("Coins pls!".into())
199 /// .payment_hash(payment_hash)
200 /// .payment_secret(payment_secret)
201 /// .current_timestamp()
202 /// .min_final_cltv_expiry_delta(144)
203 /// .build_signed(|hash| {
204 /// Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)
208 /// assert!(invoice.to_string().starts_with("lnbc1"));
212 /// # Type parameters
213 /// The two parameters `D` and `H` signal if the builder already contains the correct amount of the
215 /// * `D`: exactly one `Description` or `DescriptionHash`
216 /// * `H`: exactly one `PaymentHash`
217 /// * `T`: the timestamp is set
219 /// (C-not exported) as we likely need to manually select one set of boolean type parameters.
220 #[derive(Eq, PartialEq, Debug, Clone)]
221 pub struct InvoiceBuilder<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool, S: tb::Bool> {
224 si_prefix: Option<SiPrefix>,
225 timestamp: Option<PositiveTimestamp>,
226 tagged_fields: Vec<TaggedField>,
227 error: Option<CreationError>,
229 phantom_d: core::marker::PhantomData<D>,
230 phantom_h: core::marker::PhantomData<H>,
231 phantom_t: core::marker::PhantomData<T>,
232 phantom_c: core::marker::PhantomData<C>,
233 phantom_s: core::marker::PhantomData<S>,
236 /// Represents a syntactically and semantically correct lightning BOLT11 invoice.
238 /// There are three ways to construct an `Invoice`:
239 /// 1. using `InvoiceBuilder`
240 /// 2. using `Invoice::from_signed(SignedRawInvoice)`
241 /// 3. using `str::parse::<Invoice>(&str)`
242 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
244 signed_invoice: SignedRawInvoice,
247 /// Represents the description of an invoice which has to be either a directly included string or
248 /// a hash of a description provided out of band.
250 /// (C-not exported) As we don't have a good way to map the reference lifetimes making this
251 /// practically impossible to use safely in languages like C.
252 #[derive(Eq, PartialEq, Debug, Clone)]
253 pub enum InvoiceDescription<'f> {
254 /// Reference to the directly supplied description in the invoice
255 Direct(&'f Description),
257 /// Reference to the description's hash included in the invoice
261 /// Represents a signed `RawInvoice` with cached hash. The signature is not checked and may be
265 /// The hash has to be either from the deserialized invoice or from the serialized `raw_invoice`.
266 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
267 pub struct SignedRawInvoice {
268 /// The rawInvoice that the signature belongs to
269 raw_invoice: RawInvoice,
271 /// Hash of the `RawInvoice` that will be used to check the signature.
273 /// * if the `SignedRawInvoice` was deserialized the hash is of from the original encoded form,
274 /// since it's not guaranteed that encoding it again will lead to the same result since integers
275 /// could have been encoded with leading zeroes etc.
276 /// * if the `SignedRawInvoice` was constructed manually the hash will be the calculated hash
277 /// from the `RawInvoice`
280 /// signature of the payment request
281 signature: InvoiceSignature,
284 /// Represents an syntactically correct Invoice for a payment on the lightning network,
285 /// but without the signature information.
286 /// De- and encoding should not lead to information loss but may lead to different hashes.
288 /// For methods without docs see the corresponding methods in `Invoice`.
289 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
290 pub struct RawInvoice {
291 /// human readable part
295 pub data: RawDataPart,
298 /// Data of the `RawInvoice` that is encoded in the human readable part
300 /// (C-not exported) As we don't yet support `Option<Enum>`
301 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
303 /// The currency deferred from the 3rd and 4th character of the bech32 transaction
304 pub currency: Currency,
306 /// The amount that, multiplied by the SI prefix, has to be payed
307 pub raw_amount: Option<u64>,
309 /// SI prefix that gets multiplied with the `raw_amount`
310 pub si_prefix: Option<SiPrefix>,
313 /// Data of the `RawInvoice` that is encoded in the data part
314 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
315 pub struct RawDataPart {
316 /// generation time of the invoice
317 pub timestamp: PositiveTimestamp,
319 /// tagged fields of the payment request
320 pub tagged_fields: Vec<RawTaggedField>,
323 /// A timestamp that refers to a date after 1 January 1970.
327 /// The Unix timestamp representing the stored time has to be positive and no greater than
328 /// [`MAX_TIMESTAMP`].
329 #[derive(Eq, PartialEq, Debug, Clone, Hash)]
330 pub struct PositiveTimestamp(Duration);
332 /// SI prefixes for the human readable part
333 #[derive(Eq, PartialEq, Debug, Clone, Copy, Hash)]
346 /// Returns the multiplier to go from a BTC value to picoBTC implied by this SiPrefix.
347 /// This is effectively 10^12 * the prefix multiplier
348 pub fn multiplier(&self) -> u64 {
350 SiPrefix::Milli => 1_000_000_000,
351 SiPrefix::Micro => 1_000_000,
352 SiPrefix::Nano => 1_000,
357 /// Returns all enum variants of `SiPrefix` sorted in descending order of their associated
360 /// (C-not exported) As we don't yet support a slice of enums, and also because this function
361 /// isn't the most critical to expose.
362 pub fn values_desc() -> &'static [SiPrefix] {
363 use crate::SiPrefix::*;
364 static VALUES: [SiPrefix; 4] = [Milli, Micro, Nano, Pico];
369 /// Enum representing the crypto currencies (or networks) supported by this library
370 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
388 /// Tagged field which may have an unknown tag
390 /// (C-not exported) as we don't currently support TaggedField
391 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
392 pub enum RawTaggedField {
393 /// Parsed tagged field with known tag
394 KnownSemantics(TaggedField),
395 /// tagged field which was not parsed due to an unknown tag or undefined field semantics
396 UnknownSemantics(Vec<u5>),
399 /// Tagged field with known tag
401 /// For descriptions of the enum values please refer to the enclosed type's docs.
403 /// (C-not exported) As we don't yet support enum variants with the same name the struct contained
405 #[allow(missing_docs)]
406 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
407 pub enum TaggedField {
409 Description(Description),
410 PayeePubKey(PayeePubKey),
411 DescriptionHash(Sha256),
412 ExpiryTime(ExpiryTime),
413 MinFinalCltvExpiryDelta(MinFinalCltvExpiryDelta),
415 PrivateRoute(PrivateRoute),
416 PaymentSecret(PaymentSecret),
417 Features(InvoiceFeatures),
421 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
422 pub struct Sha256(/// (C-not exported) as the native hash types are not currently mapped
425 /// Description string
428 /// The description can be at most 639 __bytes__ long
429 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
430 pub struct Description(String);
433 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
434 pub struct PayeePubKey(pub PublicKey);
436 /// Positive duration that defines when (relatively to the timestamp) in the future the invoice
438 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
439 pub struct ExpiryTime(Duration);
441 /// `min_final_cltv_expiry_delta` to use for the last HTLC in the route
442 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
443 pub struct MinFinalCltvExpiryDelta(pub u64);
445 // TODO: better types instead onf byte arrays
446 /// Fallback address in case no LN payment is possible
447 #[allow(missing_docs)]
448 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
454 PubKeyHash([u8; 20]),
455 ScriptHash([u8; 20]),
458 /// Recoverable signature
459 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
460 pub struct InvoiceSignature(pub RecoverableSignature);
462 /// Private routing information
465 /// The encoded route has to be <1024 5bit characters long (<=639 bytes or <=12 hops)
467 #[derive(Clone, Debug, Hash, Eq, PartialEq)]
468 pub struct PrivateRoute(RouteHint);
470 /// Tag constants as specified in BOLT11
471 #[allow(missing_docs)]
473 pub const TAG_PAYMENT_HASH: u8 = 1;
474 pub const TAG_DESCRIPTION: u8 = 13;
475 pub const TAG_PAYEE_PUB_KEY: u8 = 19;
476 pub const TAG_DESCRIPTION_HASH: u8 = 23;
477 pub const TAG_EXPIRY_TIME: u8 = 6;
478 pub const TAG_MIN_FINAL_CLTV_EXPIRY_DELTA: u8 = 24;
479 pub const TAG_FALLBACK: u8 = 9;
480 pub const TAG_PRIVATE_ROUTE: u8 = 3;
481 pub const TAG_PAYMENT_SECRET: u8 = 16;
482 pub const TAG_FEATURES: u8 = 5;
485 impl InvoiceBuilder<tb::False, tb::False, tb::False, tb::False, tb::False> {
486 /// Construct new, empty `InvoiceBuilder`. All necessary fields have to be filled first before
487 /// `InvoiceBuilder::build(self)` becomes available.
488 pub fn new(currrency: Currency) -> Self {
494 tagged_fields: Vec::new(),
497 phantom_d: core::marker::PhantomData,
498 phantom_h: core::marker::PhantomData,
499 phantom_t: core::marker::PhantomData,
500 phantom_c: core::marker::PhantomData,
501 phantom_s: core::marker::PhantomData,
506 impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool, S: tb::Bool> InvoiceBuilder<D, H, T, C, S> {
507 /// Helper function to set the completeness flags.
508 fn set_flags<DN: tb::Bool, HN: tb::Bool, TN: tb::Bool, CN: tb::Bool, SN: tb::Bool>(self) -> InvoiceBuilder<DN, HN, TN, CN, SN> {
509 InvoiceBuilder::<DN, HN, TN, CN, SN> {
510 currency: self.currency,
512 si_prefix: self.si_prefix,
513 timestamp: self.timestamp,
514 tagged_fields: self.tagged_fields,
517 phantom_d: core::marker::PhantomData,
518 phantom_h: core::marker::PhantomData,
519 phantom_t: core::marker::PhantomData,
520 phantom_c: core::marker::PhantomData,
521 phantom_s: core::marker::PhantomData,
525 /// Sets the amount in millisatoshis. The optimal SI prefix is chosen automatically.
526 pub fn amount_milli_satoshis(mut self, amount_msat: u64) -> Self {
527 let amount = amount_msat * 10; // Invoices are denominated in "pico BTC"
528 let biggest_possible_si_prefix = SiPrefix::values_desc()
530 .find(|prefix| amount % prefix.multiplier() == 0)
531 .expect("Pico should always match");
532 self.amount = Some(amount / biggest_possible_si_prefix.multiplier());
533 self.si_prefix = Some(*biggest_possible_si_prefix);
537 /// Sets the payee's public key.
538 pub fn payee_pub_key(mut self, pub_key: PublicKey) -> Self {
539 self.tagged_fields.push(TaggedField::PayeePubKey(PayeePubKey(pub_key)));
543 /// Sets the expiry time, dropping the subsecond part (which is not representable in BOLT 11
545 pub fn expiry_time(mut self, expiry_time: Duration) -> Self {
546 self.tagged_fields.push(TaggedField::ExpiryTime(ExpiryTime::from_duration(expiry_time)));
550 /// Adds a fallback address.
551 pub fn fallback(mut self, fallback: Fallback) -> Self {
552 self.tagged_fields.push(TaggedField::Fallback(fallback));
556 /// Adds a private route.
557 pub fn private_route(mut self, hint: RouteHint) -> Self {
558 match PrivateRoute::new(hint) {
559 Ok(r) => self.tagged_fields.push(TaggedField::PrivateRoute(r)),
560 Err(e) => self.error = Some(e),
566 impl<D: tb::Bool, H: tb::Bool, C: tb::Bool, S: tb::Bool> InvoiceBuilder<D, H, tb::True, C, S> {
567 /// Builds a `RawInvoice` if no `CreationError` occurred while construction any of the fields.
568 pub fn build_raw(self) -> Result<RawInvoice, CreationError> {
570 // If an error occurred at any time before, return it now
571 if let Some(e) = self.error {
576 currency: self.currency,
577 raw_amount: self.amount,
578 si_prefix: self.si_prefix,
581 let timestamp = self.timestamp.expect("ensured to be Some(t) by type T");
583 let tagged_fields = self.tagged_fields.into_iter().map(|tf| {
584 RawTaggedField::KnownSemantics(tf)
585 }).collect::<Vec<_>>();
587 let data = RawDataPart {
599 impl<H: tb::Bool, T: tb::Bool, C: tb::Bool, S: tb::Bool> InvoiceBuilder<tb::False, H, T, C, S> {
600 /// Set the description. This function is only available if no description (hash) was set.
601 pub fn description(mut self, description: String) -> InvoiceBuilder<tb::True, H, T, C, S> {
602 match Description::new(description) {
603 Ok(d) => self.tagged_fields.push(TaggedField::Description(d)),
604 Err(e) => self.error = Some(e),
609 /// Set the description hash. This function is only available if no description (hash) was set.
610 pub fn description_hash(mut self, description_hash: sha256::Hash) -> InvoiceBuilder<tb::True, H, T, C, S> {
611 self.tagged_fields.push(TaggedField::DescriptionHash(Sha256(description_hash)));
615 /// Set the description or description hash. This function is only available if no description (hash) was set.
616 pub fn invoice_description(self, description: InvoiceDescription) -> InvoiceBuilder<tb::True, H, T, C, S> {
618 InvoiceDescription::Direct(desc) => {
619 self.description(desc.clone().into_inner())
621 InvoiceDescription::Hash(hash) => {
622 self.description_hash(hash.0)
628 impl<D: tb::Bool, T: tb::Bool, C: tb::Bool, S: tb::Bool> InvoiceBuilder<D, tb::False, T, C, S> {
629 /// Set the payment hash. This function is only available if no payment hash was set.
630 pub fn payment_hash(mut self, hash: sha256::Hash) -> InvoiceBuilder<D, tb::True, T, C, S> {
631 self.tagged_fields.push(TaggedField::PaymentHash(Sha256(hash)));
636 impl<D: tb::Bool, H: tb::Bool, C: tb::Bool, S: tb::Bool> InvoiceBuilder<D, H, tb::False, C, S> {
637 /// Sets the timestamp to a specific [`SystemTime`].
638 #[cfg(feature = "std")]
639 pub fn timestamp(mut self, time: SystemTime) -> InvoiceBuilder<D, H, tb::True, C, S> {
640 match PositiveTimestamp::from_system_time(time) {
641 Ok(t) => self.timestamp = Some(t),
642 Err(e) => self.error = Some(e),
648 /// Sets the timestamp to a duration since the Unix epoch, dropping the subsecond part (which
649 /// is not representable in BOLT 11 invoices).
650 pub fn duration_since_epoch(mut self, time: Duration) -> InvoiceBuilder<D, H, tb::True, C, S> {
651 match PositiveTimestamp::from_duration_since_epoch(time) {
652 Ok(t) => self.timestamp = Some(t),
653 Err(e) => self.error = Some(e),
659 /// Sets the timestamp to the current system time.
660 #[cfg(feature = "std")]
661 pub fn current_timestamp(mut self) -> InvoiceBuilder<D, H, tb::True, C, S> {
662 let now = PositiveTimestamp::from_system_time(SystemTime::now());
663 self.timestamp = Some(now.expect("for the foreseeable future this shouldn't happen"));
668 impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, S: tb::Bool> InvoiceBuilder<D, H, T, tb::False, S> {
669 /// Sets `min_final_cltv_expiry_delta`.
670 pub fn min_final_cltv_expiry_delta(mut self, min_final_cltv_expiry_delta: u64) -> InvoiceBuilder<D, H, T, tb::True, S> {
671 self.tagged_fields.push(TaggedField::MinFinalCltvExpiryDelta(MinFinalCltvExpiryDelta(min_final_cltv_expiry_delta)));
676 impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T, C, tb::False> {
677 /// Sets the payment secret and relevant features.
678 pub fn payment_secret(mut self, payment_secret: PaymentSecret) -> InvoiceBuilder<D, H, T, C, tb::True> {
679 let mut features = InvoiceFeatures::empty();
680 features.set_variable_length_onion_required();
681 features.set_payment_secret_required();
682 self.tagged_fields.push(TaggedField::PaymentSecret(payment_secret));
683 self.tagged_fields.push(TaggedField::Features(features));
688 impl<D: tb::Bool, H: tb::Bool, T: tb::Bool, C: tb::Bool> InvoiceBuilder<D, H, T, C, tb::True> {
689 /// Sets the `basic_mpp` feature as optional.
690 pub fn basic_mpp(mut self) -> Self {
691 for field in self.tagged_fields.iter_mut() {
692 if let TaggedField::Features(f) = field {
693 f.set_basic_mpp_optional();
700 impl InvoiceBuilder<tb::True, tb::True, tb::True, tb::True, tb::True> {
701 /// Builds and signs an invoice using the supplied `sign_function`. This function MAY NOT fail
702 /// and MUST produce a recoverable signature valid for the given hash and if applicable also for
703 /// the included payee public key.
704 pub fn build_signed<F>(self, sign_function: F) -> Result<Invoice, CreationError>
705 where F: FnOnce(&Message) -> RecoverableSignature
707 let invoice = self.try_build_signed::<_, ()>(|hash| {
708 Ok(sign_function(hash))
713 Err(SignOrCreationError::CreationError(e)) => Err(e),
714 Err(SignOrCreationError::SignError(())) => unreachable!(),
718 /// Builds and signs an invoice using the supplied `sign_function`. This function MAY fail with
719 /// an error of type `E` and MUST produce a recoverable signature valid for the given hash and
720 /// if applicable also for the included payee public key.
721 pub fn try_build_signed<F, E>(self, sign_function: F) -> Result<Invoice, SignOrCreationError<E>>
722 where F: FnOnce(&Message) -> Result<RecoverableSignature, E>
724 let raw = match self.build_raw() {
726 Err(e) => return Err(SignOrCreationError::CreationError(e)),
729 let signed = match raw.sign(sign_function) {
731 Err(e) => return Err(SignOrCreationError::SignError(e)),
734 let invoice = Invoice {
735 signed_invoice: signed,
738 invoice.check_field_counts().expect("should be ensured by type signature of builder");
739 invoice.check_feature_bits().expect("should be ensured by type signature of builder");
740 invoice.check_amount().expect("should be ensured by type signature of builder");
747 impl SignedRawInvoice {
748 /// Disassembles the `SignedRawInvoice` into its three parts:
750 /// 2. hash of the raw invoice
752 pub fn into_parts(self) -> (RawInvoice, [u8; 32], InvoiceSignature) {
753 (self.raw_invoice, self.hash, self.signature)
756 /// The `RawInvoice` which was signed.
757 pub fn raw_invoice(&self) -> &RawInvoice {
761 /// The hash of the `RawInvoice` that was signed.
762 pub fn signable_hash(&self) -> &[u8; 32] {
766 /// InvoiceSignature for the invoice.
767 pub fn signature(&self) -> &InvoiceSignature {
771 /// Recovers the public key used for signing the invoice from the recoverable signature.
772 pub fn recover_payee_pub_key(&self) -> Result<PayeePubKey, secp256k1::Error> {
773 let hash = Message::from_slice(&self.hash[..])
774 .expect("Hash is 32 bytes long, same as MESSAGE_SIZE");
776 Ok(PayeePubKey(Secp256k1::new().recover_ecdsa(
782 /// Checks if the signature is valid for the included payee public key or if none exists if it's
783 /// valid for the recovered signature (which should always be true?).
784 pub fn check_signature(&self) -> bool {
785 let included_pub_key = self.raw_invoice.payee_pub_key();
787 let mut recovered_pub_key = Option::None;
788 if recovered_pub_key.is_none() {
789 let recovered = match self.recover_payee_pub_key() {
791 Err(_) => return false,
793 recovered_pub_key = Some(recovered);
796 let pub_key = included_pub_key.or(recovered_pub_key.as_ref())
797 .expect("One is always present");
799 let hash = Message::from_slice(&self.hash[..])
800 .expect("Hash is 32 bytes long, same as MESSAGE_SIZE");
802 let secp_context = Secp256k1::new();
803 let verification_result = secp_context.verify_ecdsa(
805 &self.signature.to_standard(),
809 match verification_result {
816 /// Finds the first element of an enum stream of a given variant and extracts one member of the
817 /// variant. If no element was found `None` gets returned.
819 /// The following example would extract the first B.
827 /// let elements = vec![Enum::A(1), Enum::A(2), Enum::B(3), Enum::A(4)];
829 /// assert_eq!(find_extract!(elements.iter(), Enum::B(x), x), Some(3u16));
831 macro_rules! find_extract {
832 ($iter:expr, $enm:pat, $enm_var:ident) => {
833 find_all_extract!($iter, $enm, $enm_var).next()
837 /// Finds the all elements of an enum stream of a given variant and extracts one member of the
838 /// variant through an iterator.
840 /// The following example would extract all A.
848 /// let elements = vec![Enum::A(1), Enum::A(2), Enum::B(3), Enum::A(4)];
851 /// find_all_extract!(elements.iter(), Enum::A(x), x).collect::<Vec<u8>>(),
852 /// vec![1u8, 2u8, 4u8]
855 macro_rules! find_all_extract {
856 ($iter:expr, $enm:pat, $enm_var:ident) => {
857 $iter.filter_map(|tf| match *tf {
858 $enm => Some($enm_var),
864 #[allow(missing_docs)]
866 /// Hash the HRP as bytes and signatureless data part.
867 fn hash_from_parts(hrp_bytes: &[u8], data_without_signature: &[u5]) -> [u8; 32] {
868 let preimage = construct_invoice_preimage(hrp_bytes, data_without_signature);
869 let mut hash: [u8; 32] = Default::default();
870 hash.copy_from_slice(&sha256::Hash::hash(&preimage)[..]);
874 /// Calculate the hash of the encoded `RawInvoice` which should be signed.
875 pub fn signable_hash(&self) -> [u8; 32] {
876 use bech32::ToBase32;
878 RawInvoice::hash_from_parts(
879 self.hrp.to_string().as_bytes(),
880 &self.data.to_base32()
884 /// Signs the invoice using the supplied `sign_function`. This function MAY fail with an error
885 /// of type `E`. Since the signature of a `SignedRawInvoice` is not required to be valid there
886 /// are no constraints regarding the validity of the produced signature.
888 /// (C-not exported) As we don't currently support passing function pointers into methods
890 pub fn sign<F, E>(self, sign_method: F) -> Result<SignedRawInvoice, E>
891 where F: FnOnce(&Message) -> Result<RecoverableSignature, E>
893 let raw_hash = self.signable_hash();
894 let hash = Message::from_slice(&raw_hash[..])
895 .expect("Hash is 32 bytes long, same as MESSAGE_SIZE");
896 let signature = sign_method(&hash)?;
898 Ok(SignedRawInvoice {
901 signature: InvoiceSignature(signature),
905 /// Returns an iterator over all tagged fields with known semantics.
907 /// (C-not exported) As there is not yet a manual mapping for a FilterMap
908 pub fn known_tagged_fields(&self)
909 -> FilterMap<Iter<RawTaggedField>, fn(&RawTaggedField) -> Option<&TaggedField>>
911 // For 1.14.0 compatibility: closures' types can't be written an fn()->() in the
912 // function's type signature.
913 // TODO: refactor once impl Trait is available
914 fn match_raw(raw: &RawTaggedField) -> Option<&TaggedField> {
916 RawTaggedField::KnownSemantics(ref tf) => Some(tf),
921 self.data.tagged_fields.iter().filter_map(match_raw )
924 pub fn payment_hash(&self) -> Option<&Sha256> {
925 find_extract!(self.known_tagged_fields(), TaggedField::PaymentHash(ref x), x)
928 pub fn description(&self) -> Option<&Description> {
929 find_extract!(self.known_tagged_fields(), TaggedField::Description(ref x), x)
932 pub fn payee_pub_key(&self) -> Option<&PayeePubKey> {
933 find_extract!(self.known_tagged_fields(), TaggedField::PayeePubKey(ref x), x)
936 pub fn description_hash(&self) -> Option<&Sha256> {
937 find_extract!(self.known_tagged_fields(), TaggedField::DescriptionHash(ref x), x)
940 pub fn expiry_time(&self) -> Option<&ExpiryTime> {
941 find_extract!(self.known_tagged_fields(), TaggedField::ExpiryTime(ref x), x)
944 pub fn min_final_cltv_expiry_delta(&self) -> Option<&MinFinalCltvExpiryDelta> {
945 find_extract!(self.known_tagged_fields(), TaggedField::MinFinalCltvExpiryDelta(ref x), x)
948 pub fn payment_secret(&self) -> Option<&PaymentSecret> {
949 find_extract!(self.known_tagged_fields(), TaggedField::PaymentSecret(ref x), x)
952 pub fn features(&self) -> Option<&InvoiceFeatures> {
953 find_extract!(self.known_tagged_fields(), TaggedField::Features(ref x), x)
956 /// (C-not exported) as we don't support Vec<&NonOpaqueType>
957 pub fn fallbacks(&self) -> Vec<&Fallback> {
958 find_all_extract!(self.known_tagged_fields(), TaggedField::Fallback(ref x), x).collect()
961 pub fn private_routes(&self) -> Vec<&PrivateRoute> {
962 find_all_extract!(self.known_tagged_fields(), TaggedField::PrivateRoute(ref x), x).collect()
965 pub fn amount_pico_btc(&self) -> Option<u64> {
966 self.hrp.raw_amount.map(|v| {
967 v * self.hrp.si_prefix.as_ref().map_or(1_000_000_000_000, |si| { si.multiplier() })
971 pub fn currency(&self) -> Currency {
972 self.hrp.currency.clone()
976 impl PositiveTimestamp {
977 /// Creates a `PositiveTimestamp` from a Unix timestamp in the range `0..=MAX_TIMESTAMP`.
979 /// Otherwise, returns a [`CreationError::TimestampOutOfBounds`].
980 pub fn from_unix_timestamp(unix_seconds: u64) -> Result<Self, CreationError> {
981 if unix_seconds <= MAX_TIMESTAMP {
982 Ok(Self(Duration::from_secs(unix_seconds)))
984 Err(CreationError::TimestampOutOfBounds)
988 /// Creates a `PositiveTimestamp` from a [`SystemTime`] with a corresponding Unix timestamp in
989 /// the range `0..=MAX_TIMESTAMP`.
991 /// Note that the subsecond part is dropped as it is not representable in BOLT 11 invoices.
993 /// Otherwise, returns a [`CreationError::TimestampOutOfBounds`].
994 #[cfg(feature = "std")]
995 pub fn from_system_time(time: SystemTime) -> Result<Self, CreationError> {
996 time.duration_since(SystemTime::UNIX_EPOCH)
997 .map(Self::from_duration_since_epoch)
998 .unwrap_or(Err(CreationError::TimestampOutOfBounds))
1001 /// Creates a `PositiveTimestamp` from a [`Duration`] since the Unix epoch in the range
1002 /// `0..=MAX_TIMESTAMP`.
1004 /// Note that the subsecond part is dropped as it is not representable in BOLT 11 invoices.
1006 /// Otherwise, returns a [`CreationError::TimestampOutOfBounds`].
1007 pub fn from_duration_since_epoch(duration: Duration) -> Result<Self, CreationError> {
1008 Self::from_unix_timestamp(duration.as_secs())
1011 /// Returns the Unix timestamp representing the stored time
1012 pub fn as_unix_timestamp(&self) -> u64 {
1016 /// Returns the duration of the stored time since the Unix epoch
1017 pub fn as_duration_since_epoch(&self) -> Duration {
1021 /// Returns the [`SystemTime`] representing the stored time
1022 #[cfg(feature = "std")]
1023 pub fn as_time(&self) -> SystemTime {
1024 SystemTime::UNIX_EPOCH + self.0
1028 #[cfg(feature = "std")]
1029 impl From<PositiveTimestamp> for SystemTime {
1030 fn from(val: PositiveTimestamp) -> Self {
1031 SystemTime::UNIX_EPOCH + val.0
1036 /// Transform the `Invoice` into it's unchecked version
1037 pub fn into_signed_raw(self) -> SignedRawInvoice {
1041 /// Check that all mandatory fields are present
1042 fn check_field_counts(&self) -> Result<(), SemanticError> {
1043 // "A writer MUST include exactly one p field […]."
1044 let payment_hash_cnt = self.tagged_fields().filter(|&tf| match *tf {
1045 TaggedField::PaymentHash(_) => true,
1048 if payment_hash_cnt < 1 {
1049 return Err(SemanticError::NoPaymentHash);
1050 } else if payment_hash_cnt > 1 {
1051 return Err(SemanticError::MultiplePaymentHashes);
1054 // "A writer MUST include either exactly one d or exactly one h field."
1055 let description_cnt = self.tagged_fields().filter(|&tf| match *tf {
1056 TaggedField::Description(_) | TaggedField::DescriptionHash(_) => true,
1059 if description_cnt < 1 {
1060 return Err(SemanticError::NoDescription);
1061 } else if description_cnt > 1 {
1062 return Err(SemanticError::MultipleDescriptions);
1065 self.check_payment_secret()?;
1070 /// Checks that there is exactly one payment secret field
1071 fn check_payment_secret(&self) -> Result<(), SemanticError> {
1072 // "A writer MUST include exactly one `s` field."
1073 let payment_secret_count = self.tagged_fields().filter(|&tf| match *tf {
1074 TaggedField::PaymentSecret(_) => true,
1077 if payment_secret_count < 1 {
1078 return Err(SemanticError::NoPaymentSecret);
1079 } else if payment_secret_count > 1 {
1080 return Err(SemanticError::MultiplePaymentSecrets);
1086 /// Check that amount is a whole number of millisatoshis
1087 fn check_amount(&self) -> Result<(), SemanticError> {
1088 if let Some(amount_pico_btc) = self.amount_pico_btc() {
1089 if amount_pico_btc % 10 != 0 {
1090 return Err(SemanticError::ImpreciseAmount);
1096 /// Check that feature bits are set as required
1097 fn check_feature_bits(&self) -> Result<(), SemanticError> {
1098 self.check_payment_secret()?;
1100 // "A writer MUST set an s field if and only if the payment_secret feature is set."
1101 // (this requirement has been since removed, and we now require the payment secret
1102 // feature bit always).
1103 let features = self.tagged_fields().find(|&tf| match *tf {
1104 TaggedField::Features(_) => true,
1108 None => Err(SemanticError::InvalidFeatures),
1109 Some(TaggedField::Features(features)) => {
1110 if features.requires_unknown_bits() {
1111 Err(SemanticError::InvalidFeatures)
1112 } else if !features.supports_payment_secret() {
1113 Err(SemanticError::InvalidFeatures)
1118 Some(_) => unreachable!(),
1122 /// Check that the invoice is signed correctly and that key recovery works
1123 pub fn check_signature(&self) -> Result<(), SemanticError> {
1124 match self.signed_invoice.recover_payee_pub_key() {
1125 Err(secp256k1::Error::InvalidRecoveryId) =>
1126 return Err(SemanticError::InvalidRecoveryId),
1127 Err(secp256k1::Error::InvalidSignature) =>
1128 return Err(SemanticError::InvalidSignature),
1129 Err(e) => panic!("no other error may occur, got {:?}", e),
1133 if !self.signed_invoice.check_signature() {
1134 return Err(SemanticError::InvalidSignature);
1140 /// Constructs an `Invoice` from a `SignedRawInvoice` by checking all its invariants.
1142 /// use lightning_invoice::*;
1144 /// let invoice = "lnbc100p1psj9jhxdqud3jxktt5w46x7unfv9kz6mn0v3jsnp4q0d3p2sfluzdx45tqcs\
1145 /// h2pu5qc7lgq0xs578ngs6s0s68ua4h7cvspp5q6rmq35js88zp5dvwrv9m459tnk2zunwj5jalqtyxqulh0l\
1146 /// 5gflssp5nf55ny5gcrfl30xuhzj3nphgj27rstekmr9fw3ny5989s300gyus9qyysgqcqpcrzjqw2sxwe993\
1147 /// h5pcm4dxzpvttgza8zhkqxpgffcrf5v25nwpr3cmfg7z54kuqq8rgqqqqqqqq2qqqqq9qq9qrzjqd0ylaqcl\
1148 /// j9424x9m8h2vcukcgnm6s56xfgu3j78zyqzhgs4hlpzvznlugqq9vsqqqqqqqlgqqqqqeqq9qrzjqwldmj9d\
1149 /// ha74df76zhx6l9we0vjdquygcdt3kssupehe64g6yyp5yz5rhuqqwccqqyqqqqlgqqqqjcqq9qrzjqf9e58a\
1150 /// guqr0rcun0ajlvmzq3ek63cw2w282gv3z5uupmuwvgjtq2z55qsqqg6qqqyqqqrtnqqqzq3cqygrzjqvphms\
1151 /// ywntrrhqjcraumvc4y6r8v4z5v593trte429v4hredj7ms5z52usqq9ngqqqqqqqlgqqqqqqgq9qrzjq2v0v\
1152 /// p62g49p7569ev48cmulecsxe59lvaw3wlxm7r982zxa9zzj7z5l0cqqxusqqyqqqqlgqqqqqzsqygarl9fh3\
1153 /// 8s0gyuxjjgux34w75dnc6xp2l35j7es3jd4ugt3lu0xzre26yg5m7ke54n2d5sym4xcmxtl8238xxvw5h5h5\
1154 /// j5r6drg6k6zcqj0fcwg";
1156 /// let signed = invoice.parse::<SignedRawInvoice>().unwrap();
1158 /// assert!(Invoice::from_signed(signed).is_ok());
1160 pub fn from_signed(signed_invoice: SignedRawInvoice) -> Result<Self, SemanticError> {
1161 let invoice = Invoice {
1164 invoice.check_field_counts()?;
1165 invoice.check_feature_bits()?;
1166 invoice.check_signature()?;
1167 invoice.check_amount()?;
1172 /// Returns the `Invoice`'s timestamp (should equal its creation time)
1173 #[cfg(feature = "std")]
1174 pub fn timestamp(&self) -> SystemTime {
1175 self.signed_invoice.raw_invoice().data.timestamp.as_time()
1178 /// Returns the `Invoice`'s timestamp as a duration since the Unix epoch
1179 pub fn duration_since_epoch(&self) -> Duration {
1180 self.signed_invoice.raw_invoice().data.timestamp.0
1183 /// Returns an iterator over all tagged fields of this Invoice.
1185 /// (C-not exported) As there is not yet a manual mapping for a FilterMap
1186 pub fn tagged_fields(&self)
1187 -> FilterMap<Iter<RawTaggedField>, fn(&RawTaggedField) -> Option<&TaggedField>> {
1188 self.signed_invoice.raw_invoice().known_tagged_fields()
1191 /// Returns the hash to which we will receive the preimage on completion of the payment
1192 pub fn payment_hash(&self) -> &sha256::Hash {
1193 &self.signed_invoice.payment_hash().expect("checked by constructor").0
1196 /// Return the description or a hash of it for longer ones
1198 /// (C-not exported) because we don't yet export InvoiceDescription
1199 pub fn description(&self) -> InvoiceDescription {
1200 if let Some(direct) = self.signed_invoice.description() {
1201 return InvoiceDescription::Direct(direct);
1202 } else if let Some(hash) = self.signed_invoice.description_hash() {
1203 return InvoiceDescription::Hash(hash);
1205 unreachable!("ensured by constructor");
1208 /// Get the payee's public key if one was included in the invoice
1209 pub fn payee_pub_key(&self) -> Option<&PublicKey> {
1210 self.signed_invoice.payee_pub_key().map(|x| &x.0)
1213 /// Get the payment secret if one was included in the invoice
1214 pub fn payment_secret(&self) -> &PaymentSecret {
1215 self.signed_invoice.payment_secret().expect("was checked by constructor")
1218 /// Get the invoice features if they were included in the invoice
1219 pub fn features(&self) -> Option<&InvoiceFeatures> {
1220 self.signed_invoice.features()
1223 /// Recover the payee's public key (only to be used if none was included in the invoice)
1224 pub fn recover_payee_pub_key(&self) -> PublicKey {
1225 self.signed_invoice.recover_payee_pub_key().expect("was checked by constructor").0
1228 /// Returns the invoice's expiry time, if present, otherwise [`DEFAULT_EXPIRY_TIME`].
1229 pub fn expiry_time(&self) -> Duration {
1230 self.signed_invoice.expiry_time()
1232 .unwrap_or(Duration::from_secs(DEFAULT_EXPIRY_TIME))
1235 /// Returns whether the invoice has expired.
1236 #[cfg(feature = "std")]
1237 pub fn is_expired(&self) -> bool {
1238 Self::is_expired_from_epoch(&self.timestamp(), self.expiry_time())
1241 /// Returns whether the expiry time from the given epoch has passed.
1242 #[cfg(feature = "std")]
1243 pub(crate) fn is_expired_from_epoch(epoch: &SystemTime, expiry_time: Duration) -> bool {
1244 match epoch.elapsed() {
1245 Ok(elapsed) => elapsed > expiry_time,
1250 /// Returns whether the expiry time would pass at the given point in time.
1251 /// `at_time` is the timestamp as a duration since the Unix epoch.
1252 pub fn would_expire(&self, at_time: Duration) -> bool {
1253 self.duration_since_epoch()
1254 .checked_add(self.expiry_time())
1255 .unwrap_or_else(|| Duration::new(u64::max_value(), 1_000_000_000 - 1)) < at_time
1258 /// Returns the invoice's `min_final_cltv_expiry_delta` time, if present, otherwise
1259 /// [`DEFAULT_MIN_FINAL_CLTV_EXPIRY_DELTA`].
1260 pub fn min_final_cltv_expiry_delta(&self) -> u64 {
1261 self.signed_invoice.min_final_cltv_expiry_delta()
1263 .unwrap_or(DEFAULT_MIN_FINAL_CLTV_EXPIRY_DELTA)
1266 /// Returns a list of all fallback addresses
1268 /// (C-not exported) as we don't support Vec<&NonOpaqueType>
1269 pub fn fallbacks(&self) -> Vec<&Fallback> {
1270 self.signed_invoice.fallbacks()
1273 /// Returns a list of all routes included in the invoice
1274 pub fn private_routes(&self) -> Vec<&PrivateRoute> {
1275 self.signed_invoice.private_routes()
1278 /// Returns a list of all routes included in the invoice as the underlying hints
1279 pub fn route_hints(&self) -> Vec<RouteHint> {
1281 self.signed_invoice.known_tagged_fields(), TaggedField::PrivateRoute(ref x), x
1282 ).map(|route| (**route).clone()).collect()
1285 /// Returns the currency for which the invoice was issued
1286 pub fn currency(&self) -> Currency {
1287 self.signed_invoice.currency()
1290 /// Returns the amount if specified in the invoice as millisatoshis.
1291 pub fn amount_milli_satoshis(&self) -> Option<u64> {
1292 self.signed_invoice.amount_pico_btc().map(|v| v / 10)
1295 /// Returns the amount if specified in the invoice as pico BTC.
1296 fn amount_pico_btc(&self) -> Option<u64> {
1297 self.signed_invoice.amount_pico_btc()
1301 impl From<TaggedField> for RawTaggedField {
1302 fn from(tf: TaggedField) -> Self {
1303 RawTaggedField::KnownSemantics(tf)
1308 /// Numeric representation of the field's tag
1309 pub fn tag(&self) -> u5 {
1310 let tag = match *self {
1311 TaggedField::PaymentHash(_) => constants::TAG_PAYMENT_HASH,
1312 TaggedField::Description(_) => constants::TAG_DESCRIPTION,
1313 TaggedField::PayeePubKey(_) => constants::TAG_PAYEE_PUB_KEY,
1314 TaggedField::DescriptionHash(_) => constants::TAG_DESCRIPTION_HASH,
1315 TaggedField::ExpiryTime(_) => constants::TAG_EXPIRY_TIME,
1316 TaggedField::MinFinalCltvExpiryDelta(_) => constants::TAG_MIN_FINAL_CLTV_EXPIRY_DELTA,
1317 TaggedField::Fallback(_) => constants::TAG_FALLBACK,
1318 TaggedField::PrivateRoute(_) => constants::TAG_PRIVATE_ROUTE,
1319 TaggedField::PaymentSecret(_) => constants::TAG_PAYMENT_SECRET,
1320 TaggedField::Features(_) => constants::TAG_FEATURES,
1323 u5::try_from_u8(tag).expect("all tags defined are <32")
1329 /// Creates a new `Description` if `description` is at most 1023 __bytes__ long,
1330 /// returns `CreationError::DescriptionTooLong` otherwise
1332 /// Please note that single characters may use more than one byte due to UTF8 encoding.
1333 pub fn new(description: String) -> Result<Description, CreationError> {
1334 if description.len() > 639 {
1335 Err(CreationError::DescriptionTooLong)
1337 Ok(Description(description))
1341 /// Returns the underlying description `String`
1342 pub fn into_inner(self) -> String {
1347 impl From<Description> for String {
1348 fn from(val: Description) -> Self {
1353 impl Deref for Description {
1356 fn deref(&self) -> &str {
1361 impl From<PublicKey> for PayeePubKey {
1362 fn from(pk: PublicKey) -> Self {
1367 impl Deref for PayeePubKey {
1368 type Target = PublicKey;
1370 fn deref(&self) -> &PublicKey {
1376 /// Construct an `ExpiryTime` from seconds.
1377 pub fn from_seconds(seconds: u64) -> ExpiryTime {
1378 ExpiryTime(Duration::from_secs(seconds))
1381 /// Construct an `ExpiryTime` from a `Duration`, dropping the sub-second part.
1382 pub fn from_duration(duration: Duration) -> ExpiryTime {
1383 Self::from_seconds(duration.as_secs())
1386 /// Returns the expiry time in seconds
1387 pub fn as_seconds(&self) -> u64 {
1391 /// Returns a reference to the underlying `Duration` (=expiry time)
1392 pub fn as_duration(&self) -> &Duration {
1398 /// Creates a new (partial) route from a list of hops
1399 pub fn new(hops: RouteHint) -> Result<PrivateRoute, CreationError> {
1400 if hops.0.len() <= 12 {
1401 Ok(PrivateRoute(hops))
1403 Err(CreationError::RouteTooLong)
1407 /// Returns the underlying list of hops
1408 pub fn into_inner(self) -> RouteHint {
1413 impl From<PrivateRoute> for RouteHint {
1414 fn from(val: PrivateRoute) -> Self {
1419 impl Deref for PrivateRoute {
1420 type Target = RouteHint;
1422 fn deref(&self) -> &RouteHint {
1427 impl Deref for InvoiceSignature {
1428 type Target = RecoverableSignature;
1430 fn deref(&self) -> &RecoverableSignature {
1435 impl Deref for SignedRawInvoice {
1436 type Target = RawInvoice;
1438 fn deref(&self) -> &RawInvoice {
1443 /// Errors that may occur when constructing a new `RawInvoice` or `Invoice`
1444 #[derive(Eq, PartialEq, Debug, Clone)]
1445 pub enum CreationError {
1446 /// The supplied description string was longer than 639 __bytes__ (see [`Description::new(…)`](./struct.Description.html#method.new))
1449 /// The specified route has too many hops and can't be encoded
1452 /// The Unix timestamp of the supplied date is less than zero or greater than 35-bits
1453 TimestampOutOfBounds,
1455 /// The supplied millisatoshi amount was greater than the total bitcoin supply.
1458 /// Route hints were required for this invoice and were missing. Applies to
1459 /// [phantom invoices].
1461 /// [phantom invoices]: crate::utils::create_phantom_invoice
1464 /// The provided `min_final_cltv_expiry_delta` was less than [`MIN_FINAL_CLTV_EXPIRY_DELTA`].
1466 /// [`MIN_FINAL_CLTV_EXPIRY_DELTA`]: lightning::ln::channelmanager::MIN_FINAL_CLTV_EXPIRY_DELTA
1467 MinFinalCltvExpiryDeltaTooShort,
1470 impl Display for CreationError {
1471 fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
1473 CreationError::DescriptionTooLong => f.write_str("The supplied description string was longer than 639 bytes"),
1474 CreationError::RouteTooLong => f.write_str("The specified route has too many hops and can't be encoded"),
1475 CreationError::TimestampOutOfBounds => f.write_str("The Unix timestamp of the supplied date is less than zero or greater than 35-bits"),
1476 CreationError::InvalidAmount => f.write_str("The supplied millisatoshi amount was greater than the total bitcoin supply"),
1477 CreationError::MissingRouteHints => f.write_str("The invoice required route hints and they weren't provided"),
1478 CreationError::MinFinalCltvExpiryDeltaTooShort => f.write_str(
1479 "The supplied final CLTV expiry delta was less than LDK's `MIN_FINAL_CLTV_EXPIRY_DELTA`"),
1484 #[cfg(feature = "std")]
1485 impl std::error::Error for CreationError { }
1487 /// Errors that may occur when converting a `RawInvoice` to an `Invoice`. They relate to the
1488 /// requirements sections in BOLT #11
1489 #[derive(Eq, PartialEq, Debug, Clone)]
1490 pub enum SemanticError {
1491 /// The invoice is missing the mandatory payment hash
1494 /// The invoice has multiple payment hashes which isn't allowed
1495 MultiplePaymentHashes,
1497 /// No description or description hash are part of the invoice
1500 /// The invoice contains multiple descriptions and/or description hashes which isn't allowed
1501 MultipleDescriptions,
1503 /// The invoice is missing the mandatory payment secret, which all modern lightning nodes
1507 /// The invoice contains multiple payment secrets
1508 MultiplePaymentSecrets,
1510 /// The invoice's features are invalid
1513 /// The recovery id doesn't fit the signature/pub key
1516 /// The invoice's signature is invalid
1519 /// The invoice's amount was not a whole number of millisatoshis
1523 impl Display for SemanticError {
1524 fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
1526 SemanticError::NoPaymentHash => f.write_str("The invoice is missing the mandatory payment hash"),
1527 SemanticError::MultiplePaymentHashes => f.write_str("The invoice has multiple payment hashes which isn't allowed"),
1528 SemanticError::NoDescription => f.write_str("No description or description hash are part of the invoice"),
1529 SemanticError::MultipleDescriptions => f.write_str("The invoice contains multiple descriptions and/or description hashes which isn't allowed"),
1530 SemanticError::NoPaymentSecret => f.write_str("The invoice is missing the mandatory payment secret"),
1531 SemanticError::MultiplePaymentSecrets => f.write_str("The invoice contains multiple payment secrets"),
1532 SemanticError::InvalidFeatures => f.write_str("The invoice's features are invalid"),
1533 SemanticError::InvalidRecoveryId => f.write_str("The recovery id doesn't fit the signature/pub key"),
1534 SemanticError::InvalidSignature => f.write_str("The invoice's signature is invalid"),
1535 SemanticError::ImpreciseAmount => f.write_str("The invoice's amount was not a whole number of millisatoshis"),
1540 #[cfg(feature = "std")]
1541 impl std::error::Error for SemanticError { }
1543 /// When signing using a fallible method either an user-supplied `SignError` or a `CreationError`
1545 #[derive(Eq, PartialEq, Debug, Clone)]
1546 pub enum SignOrCreationError<S = ()> {
1547 /// An error occurred during signing
1550 /// An error occurred while building the transaction
1551 CreationError(CreationError),
1554 impl<S> Display for SignOrCreationError<S> {
1555 fn fmt(&self, f: &mut Formatter<'_>) -> fmt::Result {
1557 SignOrCreationError::SignError(_) => f.write_str("An error occurred during signing"),
1558 SignOrCreationError::CreationError(err) => err.fmt(f),
1563 #[cfg(feature = "serde")]
1564 impl Serialize for Invoice {
1565 fn serialize<S>(&self, serializer: S) -> Result<S::Ok, S::Error> where S: Serializer {
1566 serializer.serialize_str(self.to_string().as_str())
1569 #[cfg(feature = "serde")]
1570 impl<'de> Deserialize<'de> for Invoice {
1571 fn deserialize<D>(deserializer: D) -> Result<Invoice, D::Error> where D: Deserializer<'de> {
1572 let bolt11 = String::deserialize(deserializer)?
1574 .map_err(|e| D::Error::custom(format!("{:?}", e)))?;
1582 use bitcoin_hashes::hex::FromHex;
1583 use bitcoin_hashes::sha256;
1586 fn test_system_time_bounds_assumptions() {
1588 crate::PositiveTimestamp::from_unix_timestamp(crate::MAX_TIMESTAMP + 1),
1589 Err(crate::CreationError::TimestampOutOfBounds)
1594 fn test_calc_invoice_hash() {
1595 use crate::{RawInvoice, RawHrp, RawDataPart, Currency, PositiveTimestamp};
1596 use crate::TaggedField::*;
1598 let invoice = RawInvoice {
1600 currency: Currency::Bitcoin,
1605 timestamp: PositiveTimestamp::from_unix_timestamp(1496314658).unwrap(),
1606 tagged_fields: vec![
1607 PaymentHash(crate::Sha256(sha256::Hash::from_hex(
1608 "0001020304050607080900010203040506070809000102030405060708090102"
1609 ).unwrap())).into(),
1610 Description(crate::Description::new(
1611 "Please consider supporting this project".to_owned()
1617 let expected_hash = [
1618 0xc3, 0xd4, 0xe8, 0x3f, 0x64, 0x6f, 0xa7, 0x9a, 0x39, 0x3d, 0x75, 0x27, 0x7b, 0x1d,
1619 0x85, 0x8d, 0xb1, 0xd1, 0xf7, 0xab, 0x71, 0x37, 0xdc, 0xb7, 0x83, 0x5d, 0xb2, 0xec,
1620 0xd5, 0x18, 0xe1, 0xc9
1623 assert_eq!(invoice.signable_hash(), expected_hash)
1627 fn test_check_signature() {
1628 use crate::TaggedField::*;
1629 use secp256k1::Secp256k1;
1630 use secp256k1::ecdsa::{RecoveryId, RecoverableSignature};
1631 use secp256k1::{SecretKey, PublicKey};
1632 use crate::{SignedRawInvoice, InvoiceSignature, RawInvoice, RawHrp, RawDataPart, Currency, Sha256,
1635 let invoice = SignedRawInvoice {
1636 raw_invoice: RawInvoice {
1638 currency: Currency::Bitcoin,
1643 timestamp: PositiveTimestamp::from_unix_timestamp(1496314658).unwrap(),
1644 tagged_fields: vec ! [
1645 PaymentHash(Sha256(sha256::Hash::from_hex(
1646 "0001020304050607080900010203040506070809000102030405060708090102"
1647 ).unwrap())).into(),
1649 crate::Description::new(
1650 "Please consider supporting this project".to_owned()
1657 0xc3, 0xd4, 0xe8, 0x3f, 0x64, 0x6f, 0xa7, 0x9a, 0x39, 0x3d, 0x75, 0x27,
1658 0x7b, 0x1d, 0x85, 0x8d, 0xb1, 0xd1, 0xf7, 0xab, 0x71, 0x37, 0xdc, 0xb7,
1659 0x83, 0x5d, 0xb2, 0xec, 0xd5, 0x18, 0xe1, 0xc9
1661 signature: InvoiceSignature(RecoverableSignature::from_compact(
1663 0x38u8, 0xec, 0x68, 0x91, 0x34, 0x5e, 0x20, 0x41, 0x45, 0xbe, 0x8a,
1664 0x3a, 0x99, 0xde, 0x38, 0xe9, 0x8a, 0x39, 0xd6, 0xa5, 0x69, 0x43,
1665 0x4e, 0x18, 0x45, 0xc8, 0xaf, 0x72, 0x05, 0xaf, 0xcf, 0xcc, 0x7f,
1666 0x42, 0x5f, 0xcd, 0x14, 0x63, 0xe9, 0x3c, 0x32, 0x88, 0x1e, 0xad,
1667 0x0d, 0x6e, 0x35, 0x6d, 0x46, 0x7e, 0xc8, 0xc0, 0x25, 0x53, 0xf9,
1668 0xaa, 0xb1, 0x5e, 0x57, 0x38, 0xb1, 0x1f, 0x12, 0x7f
1670 RecoveryId::from_i32(0).unwrap()
1674 assert!(invoice.check_signature());
1676 let private_key = SecretKey::from_slice(
1678 0xe1, 0x26, 0xf6, 0x8f, 0x7e, 0xaf, 0xcc, 0x8b, 0x74, 0xf5, 0x4d, 0x26, 0x9f, 0xe2,
1679 0x06, 0xbe, 0x71, 0x50, 0x00, 0xf9, 0x4d, 0xac, 0x06, 0x7d, 0x1c, 0x04, 0xa8, 0xca,
1680 0x3b, 0x2d, 0xb7, 0x34
1683 let public_key = PublicKey::from_secret_key(&Secp256k1::new(), &private_key);
1685 assert_eq!(invoice.recover_payee_pub_key(), Ok(crate::PayeePubKey(public_key)));
1687 let (raw_invoice, _, _) = invoice.into_parts();
1688 let new_signed = raw_invoice.sign::<_, ()>(|hash| {
1689 Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key))
1692 assert!(new_signed.check_signature());
1696 fn test_check_feature_bits() {
1697 use crate::TaggedField::*;
1698 use lightning::ln::features::InvoiceFeatures;
1699 use secp256k1::Secp256k1;
1700 use secp256k1::SecretKey;
1701 use crate::{RawInvoice, RawHrp, RawDataPart, Currency, Sha256, PositiveTimestamp, Invoice,
1704 let private_key = SecretKey::from_slice(&[42; 32]).unwrap();
1705 let payment_secret = lightning::ln::PaymentSecret([21; 32]);
1706 let invoice_template = RawInvoice {
1708 currency: Currency::Bitcoin,
1713 timestamp: PositiveTimestamp::from_unix_timestamp(1496314658).unwrap(),
1714 tagged_fields: vec ! [
1715 PaymentHash(Sha256(sha256::Hash::from_hex(
1716 "0001020304050607080900010203040506070809000102030405060708090102"
1717 ).unwrap())).into(),
1719 crate::Description::new(
1720 "Please consider supporting this project".to_owned()
1729 let mut invoice = invoice_template.clone();
1730 invoice.data.tagged_fields.push(PaymentSecret(payment_secret).into());
1731 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1733 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::InvalidFeatures));
1735 // Missing feature bits
1737 let mut invoice = invoice_template.clone();
1738 invoice.data.tagged_fields.push(PaymentSecret(payment_secret).into());
1739 invoice.data.tagged_fields.push(Features(InvoiceFeatures::empty()).into());
1740 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1742 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::InvalidFeatures));
1744 let mut payment_secret_features = InvoiceFeatures::empty();
1745 payment_secret_features.set_payment_secret_required();
1747 // Including payment secret and feature bits
1749 let mut invoice = invoice_template.clone();
1750 invoice.data.tagged_fields.push(PaymentSecret(payment_secret).into());
1751 invoice.data.tagged_fields.push(Features(payment_secret_features.clone()).into());
1752 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1754 assert!(Invoice::from_signed(invoice).is_ok());
1756 // No payment secret or features
1758 let invoice = invoice_template.clone();
1759 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1761 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::NoPaymentSecret));
1763 // No payment secret or feature bits
1765 let mut invoice = invoice_template.clone();
1766 invoice.data.tagged_fields.push(Features(InvoiceFeatures::empty()).into());
1767 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1769 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::NoPaymentSecret));
1771 // Missing payment secret
1773 let mut invoice = invoice_template.clone();
1774 invoice.data.tagged_fields.push(Features(payment_secret_features).into());
1775 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1777 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::NoPaymentSecret));
1779 // Multiple payment secrets
1781 let mut invoice = invoice_template;
1782 invoice.data.tagged_fields.push(PaymentSecret(payment_secret).into());
1783 invoice.data.tagged_fields.push(PaymentSecret(payment_secret).into());
1784 invoice.sign::<_, ()>(|hash| Ok(Secp256k1::new().sign_ecdsa_recoverable(hash, &private_key)))
1786 assert_eq!(Invoice::from_signed(invoice), Err(SemanticError::MultiplePaymentSecrets));
1790 fn test_builder_amount() {
1793 let builder = InvoiceBuilder::new(Currency::Bitcoin)
1794 .description("Test".into())
1795 .payment_hash(sha256::Hash::from_slice(&[0;32][..]).unwrap())
1796 .duration_since_epoch(Duration::from_secs(1234567));
1798 let invoice = builder.clone()
1799 .amount_milli_satoshis(1500)
1803 assert_eq!(invoice.hrp.si_prefix, Some(SiPrefix::Nano));
1804 assert_eq!(invoice.hrp.raw_amount, Some(15));
1807 let invoice = builder
1808 .amount_milli_satoshis(150)
1812 assert_eq!(invoice.hrp.si_prefix, Some(SiPrefix::Pico));
1813 assert_eq!(invoice.hrp.raw_amount, Some(1500));
1817 fn test_builder_fail() {
1819 use lightning::routing::router::RouteHintHop;
1820 use std::iter::FromIterator;
1821 use secp256k1::PublicKey;
1823 let builder = InvoiceBuilder::new(Currency::Bitcoin)
1824 .payment_hash(sha256::Hash::from_slice(&[0;32][..]).unwrap())
1825 .duration_since_epoch(Duration::from_secs(1234567))
1826 .min_final_cltv_expiry_delta(144);
1828 let too_long_string = String::from_iter(
1829 (0..1024).map(|_| '?')
1832 let long_desc_res = builder.clone()
1833 .description(too_long_string)
1835 assert_eq!(long_desc_res, Err(CreationError::DescriptionTooLong));
1837 let route_hop = RouteHintHop {
1838 src_node_id: PublicKey::from_slice(
1840 0x03, 0x9e, 0x03, 0xa9, 0x01, 0xb8, 0x55, 0x34, 0xff, 0x1e, 0x92, 0xc4,
1841 0x3c, 0x74, 0x43, 0x1f, 0x7c, 0xe7, 0x20, 0x46, 0x06, 0x0f, 0xcf, 0x7a,
1842 0x95, 0xc3, 0x7e, 0x14, 0x8f, 0x78, 0xc7, 0x72, 0x55
1845 short_channel_id: 0,
1848 proportional_millionths: 0,
1850 cltv_expiry_delta: 0,
1851 htlc_minimum_msat: None,
1852 htlc_maximum_msat: None,
1854 let too_long_route = RouteHint(vec![route_hop; 13]);
1855 let long_route_res = builder.clone()
1856 .description("Test".into())
1857 .private_route(too_long_route)
1859 assert_eq!(long_route_res, Err(CreationError::RouteTooLong));
1861 let sign_error_res = builder
1862 .description("Test".into())
1863 .payment_secret(PaymentSecret([0; 32]))
1864 .try_build_signed(|_| {
1865 Err("ImaginaryError")
1867 assert_eq!(sign_error_res, Err(SignOrCreationError::SignError("ImaginaryError")));
1871 fn test_builder_ok() {
1873 use lightning::routing::router::RouteHintHop;
1874 use secp256k1::Secp256k1;
1875 use secp256k1::{SecretKey, PublicKey};
1876 use std::time::{UNIX_EPOCH, Duration};
1878 let secp_ctx = Secp256k1::new();
1880 let private_key = SecretKey::from_slice(
1882 0xe1, 0x26, 0xf6, 0x8f, 0x7e, 0xaf, 0xcc, 0x8b, 0x74, 0xf5, 0x4d, 0x26, 0x9f, 0xe2,
1883 0x06, 0xbe, 0x71, 0x50, 0x00, 0xf9, 0x4d, 0xac, 0x06, 0x7d, 0x1c, 0x04, 0xa8, 0xca,
1884 0x3b, 0x2d, 0xb7, 0x34
1887 let public_key = PublicKey::from_secret_key(&secp_ctx, &private_key);
1889 let route_1 = RouteHint(vec![
1891 src_node_id: public_key,
1892 short_channel_id: de::parse_int_be(&[123; 8], 256).expect("short chan ID slice too big?"),
1895 proportional_millionths: 1,
1897 cltv_expiry_delta: 145,
1898 htlc_minimum_msat: None,
1899 htlc_maximum_msat: None,
1902 src_node_id: public_key,
1903 short_channel_id: de::parse_int_be(&[42; 8], 256).expect("short chan ID slice too big?"),
1906 proportional_millionths: 2,
1908 cltv_expiry_delta: 146,
1909 htlc_minimum_msat: None,
1910 htlc_maximum_msat: None,
1914 let route_2 = RouteHint(vec![
1916 src_node_id: public_key,
1917 short_channel_id: 0,
1920 proportional_millionths: 3,
1922 cltv_expiry_delta: 147,
1923 htlc_minimum_msat: None,
1924 htlc_maximum_msat: None,
1927 src_node_id: public_key,
1928 short_channel_id: de::parse_int_be(&[1; 8], 256).expect("short chan ID slice too big?"),
1931 proportional_millionths: 4,
1933 cltv_expiry_delta: 148,
1934 htlc_minimum_msat: None,
1935 htlc_maximum_msat: None,
1939 let builder = InvoiceBuilder::new(Currency::BitcoinTestnet)
1940 .amount_milli_satoshis(123)
1941 .duration_since_epoch(Duration::from_secs(1234567))
1942 .payee_pub_key(public_key)
1943 .expiry_time(Duration::from_secs(54321))
1944 .min_final_cltv_expiry_delta(144)
1945 .fallback(Fallback::PubKeyHash([0;20]))
1946 .private_route(route_1.clone())
1947 .private_route(route_2.clone())
1948 .description_hash(sha256::Hash::from_slice(&[3;32][..]).unwrap())
1949 .payment_hash(sha256::Hash::from_slice(&[21;32][..]).unwrap())
1950 .payment_secret(PaymentSecret([42; 32]))
1953 let invoice = builder.clone().build_signed(|hash| {
1954 secp_ctx.sign_ecdsa_recoverable(hash, &private_key)
1957 assert!(invoice.check_signature().is_ok());
1958 assert_eq!(invoice.tagged_fields().count(), 10);
1960 assert_eq!(invoice.amount_milli_satoshis(), Some(123));
1961 assert_eq!(invoice.amount_pico_btc(), Some(1230));
1962 assert_eq!(invoice.currency(), Currency::BitcoinTestnet);
1963 #[cfg(feature = "std")]
1965 invoice.timestamp().duration_since(UNIX_EPOCH).unwrap().as_secs(),
1968 assert_eq!(invoice.payee_pub_key(), Some(&public_key));
1969 assert_eq!(invoice.expiry_time(), Duration::from_secs(54321));
1970 assert_eq!(invoice.min_final_cltv_expiry_delta(), 144);
1971 assert_eq!(invoice.fallbacks(), vec![&Fallback::PubKeyHash([0;20])]);
1972 assert_eq!(invoice.private_routes(), vec![&PrivateRoute(route_1), &PrivateRoute(route_2)]);
1974 invoice.description(),
1975 InvoiceDescription::Hash(&Sha256(sha256::Hash::from_slice(&[3;32][..]).unwrap()))
1977 assert_eq!(invoice.payment_hash(), &sha256::Hash::from_slice(&[21;32][..]).unwrap());
1978 assert_eq!(invoice.payment_secret(), &PaymentSecret([42; 32]));
1980 let mut expected_features = InvoiceFeatures::empty();
1981 expected_features.set_variable_length_onion_required();
1982 expected_features.set_payment_secret_required();
1983 expected_features.set_basic_mpp_optional();
1984 assert_eq!(invoice.features(), Some(&expected_features));
1986 let raw_invoice = builder.build_raw().unwrap();
1987 assert_eq!(raw_invoice, *invoice.into_signed_raw().raw_invoice())
1991 fn test_default_values() {
1993 use secp256k1::Secp256k1;
1994 use secp256k1::SecretKey;
1996 let signed_invoice = InvoiceBuilder::new(Currency::Bitcoin)
1997 .description("Test".into())
1998 .payment_hash(sha256::Hash::from_slice(&[0;32][..]).unwrap())
1999 .payment_secret(PaymentSecret([0; 32]))
2000 .duration_since_epoch(Duration::from_secs(1234567))
2003 .sign::<_, ()>(|hash| {
2004 let privkey = SecretKey::from_slice(&[41; 32]).unwrap();
2005 let secp_ctx = Secp256k1::new();
2006 Ok(secp_ctx.sign_ecdsa_recoverable(hash, &privkey))
2009 let invoice = Invoice::from_signed(signed_invoice).unwrap();
2011 assert_eq!(invoice.min_final_cltv_expiry_delta(), DEFAULT_MIN_FINAL_CLTV_EXPIRY_DELTA);
2012 assert_eq!(invoice.expiry_time(), Duration::from_secs(DEFAULT_EXPIRY_TIME));
2013 assert!(!invoice.would_expire(Duration::from_secs(1234568)));
2017 fn test_expiration() {
2019 use secp256k1::Secp256k1;
2020 use secp256k1::SecretKey;
2022 let signed_invoice = InvoiceBuilder::new(Currency::Bitcoin)
2023 .description("Test".into())
2024 .payment_hash(sha256::Hash::from_slice(&[0;32][..]).unwrap())
2025 .payment_secret(PaymentSecret([0; 32]))
2026 .duration_since_epoch(Duration::from_secs(1234567))
2029 .sign::<_, ()>(|hash| {
2030 let privkey = SecretKey::from_slice(&[41; 32]).unwrap();
2031 let secp_ctx = Secp256k1::new();
2032 Ok(secp_ctx.sign_ecdsa_recoverable(hash, &privkey))
2035 let invoice = Invoice::from_signed(signed_invoice).unwrap();
2037 assert!(invoice.would_expire(Duration::from_secs(1234567 + DEFAULT_EXPIRY_TIME + 1)));
2040 #[cfg(feature = "serde")]
2043 let invoice_str = "lnbc100p1psj9jhxdqud3jxktt5w46x7unfv9kz6mn0v3jsnp4q0d3p2sfluzdx45tqcs\
2044 h2pu5qc7lgq0xs578ngs6s0s68ua4h7cvspp5q6rmq35js88zp5dvwrv9m459tnk2zunwj5jalqtyxqulh0l\
2045 5gflssp5nf55ny5gcrfl30xuhzj3nphgj27rstekmr9fw3ny5989s300gyus9qyysgqcqpcrzjqw2sxwe993\
2046 h5pcm4dxzpvttgza8zhkqxpgffcrf5v25nwpr3cmfg7z54kuqq8rgqqqqqqqq2qqqqq9qq9qrzjqd0ylaqcl\
2047 j9424x9m8h2vcukcgnm6s56xfgu3j78zyqzhgs4hlpzvznlugqq9vsqqqqqqqlgqqqqqeqq9qrzjqwldmj9d\
2048 ha74df76zhx6l9we0vjdquygcdt3kssupehe64g6yyp5yz5rhuqqwccqqyqqqqlgqqqqjcqq9qrzjqf9e58a\
2049 guqr0rcun0ajlvmzq3ek63cw2w282gv3z5uupmuwvgjtq2z55qsqqg6qqqyqqqrtnqqqzq3cqygrzjqvphms\
2050 ywntrrhqjcraumvc4y6r8v4z5v593trte429v4hredj7ms5z52usqq9ngqqqqqqqlgqqqqqqgq9qrzjq2v0v\
2051 p62g49p7569ev48cmulecsxe59lvaw3wlxm7r982zxa9zzj7z5l0cqqxusqqyqqqqlgqqqqqzsqygarl9fh3\
2052 8s0gyuxjjgux34w75dnc6xp2l35j7es3jd4ugt3lu0xzre26yg5m7ke54n2d5sym4xcmxtl8238xxvw5h5h5\
2053 j5r6drg6k6zcqj0fcwg";
2054 let invoice = invoice_str.parse::<super::Invoice>().unwrap();
2055 let serialized_invoice = serde_json::to_string(&invoice).unwrap();
2056 let deserialized_invoice: super::Invoice = serde_json::from_str(serialized_invoice.as_str()).unwrap();
2057 assert_eq!(invoice, deserialized_invoice);
2058 assert_eq!(invoice_str, deserialized_invoice.to_string().as_str());
2059 assert_eq!(invoice_str, serialized_invoice.as_str().trim_matches('\"'));