use bitcoin::network::constants::Network;
use bitcoin::secp256k1::{KeyPair, PublicKey, Secp256k1, self};
use core::convert::TryFrom;
+use core::hash::{Hash, Hasher};
use core::num::NonZeroU64;
use core::ops::Deref;
use core::str::FromStr;
use crate::ln::features::OfferFeatures;
use crate::ln::inbound_payment::{ExpandedKey, IV_LEN, Nonce};
use crate::ln::msgs::MAX_VALUE_MSAT;
-use crate::offers::invoice_request::{DerivedPayerId, ExplicitPayerId, InvoiceRequestBuilder};
use crate::offers::merkle::TlvStream;
use crate::offers::parse::{Bech32Encode, Bolt12ParseError, Bolt12SemanticError, ParsedMessage};
use crate::offers::signer::{Metadata, MetadataMaterial, self};
use crate::util::ser::{HighZeroBytesDroppedBigSize, WithoutLength, Writeable, Writer};
use crate::util::string::PrintableString;
+#[cfg(not(c_bindings))]
+use {
+ crate::offers::invoice_request::{DerivedPayerId, ExplicitPayerId, InvoiceRequestBuilder},
+};
+#[cfg(c_bindings)]
+use {
+ crate::offers::invoice_request::{InvoiceRequestWithDerivedPayerIdBuilder, InvoiceRequestWithExplicitPayerIdBuilder},
+};
+
use crate::prelude::*;
#[cfg(feature = "std")]
secp_ctx: Option<&'a Secp256k1<T>>,
}
+/// Builds an [`Offer`] for the "offer to be paid" flow.
+///
+/// See [module-level documentation] for usage.
+///
+/// This is not exported to bindings users as builder patterns don't map outside of move semantics.
+///
+/// [module-level documentation]: self
+#[cfg(c_bindings)]
+pub struct OfferWithExplicitMetadataBuilder<'a> {
+ offer: OfferContents,
+ metadata_strategy: core::marker::PhantomData<ExplicitMetadata>,
+ secp_ctx: Option<&'a Secp256k1<secp256k1::All>>,
+}
+
+/// Builds an [`Offer`] for the "offer to be paid" flow.
+///
+/// See [module-level documentation] for usage.
+///
+/// This is not exported to bindings users as builder patterns don't map outside of move semantics.
+///
+/// [module-level documentation]: self
+#[cfg(c_bindings)]
+pub struct OfferWithDerivedMetadataBuilder<'a> {
+ offer: OfferContents,
+ metadata_strategy: core::marker::PhantomData<DerivedMetadata>,
+ secp_ctx: Option<&'a Secp256k1<secp256k1::All>>,
+}
+
/// Indicates how [`Offer::metadata`] may be set.
///
/// This is not exported to bindings users as builder patterns don't map outside of move semantics.
}
} }
-macro_rules! offer_derived_metadata_builder_methods { () => {
+macro_rules! offer_derived_metadata_builder_methods { ($secp_context: ty) => {
/// Similar to [`OfferBuilder::new`] except, if [`OfferBuilder::path`] is called, the signing
/// pubkey is derived from the given [`ExpandedKey`] and [`EntropySource`]. This provides
/// recipient privacy by using a different signing pubkey for each offer. Otherwise, the
/// [`ExpandedKey`]: crate::ln::inbound_payment::ExpandedKey
pub fn deriving_signing_pubkey<ES: Deref>(
description: String, node_id: PublicKey, expanded_key: &ExpandedKey, entropy_source: ES,
- secp_ctx: &'a Secp256k1<T>
+ secp_ctx: &'a Secp256k1<$secp_context>
) -> Self where ES::Target: EntropySource {
let nonce = Nonce::from_entropy_source(entropy_source);
let derivation_material = MetadataMaterial::new(nonce, expanded_key, IV_BYTES, None);
} }
macro_rules! offer_builder_methods { (
- $self: ident, $self_type: ty, $return_type: ty, $return_value: expr
+ $self: ident, $self_type: ty, $return_type: ty, $return_value: expr $(, $self_mut: tt)?
) => {
/// Adds the chain hash of the given [`Network`] to [`Offer::chains`]. If not called,
/// the chain hash of [`Network::Bitcoin`] is assumed to be the only one supported.
/// See [`Offer::chains`] on how this relates to the payment currency.
///
/// Successive calls to this method will add another chain hash.
- pub(crate) fn chain_hash(mut $self: $self_type, chain: ChainHash) -> $return_type {
+ pub(crate) fn chain_hash($($self_mut)* $self: $self_type, chain: ChainHash) -> $return_type {
let chains = $self.offer.chains.get_or_insert_with(Vec::new);
if !chains.contains(&chain) {
chains.push(chain);
/// Sets the [`Offer::amount`].
///
/// Successive calls to this method will override the previous setting.
- pub(super) fn amount(mut $self: $self_type, amount: Amount) -> $return_type {
+ pub(super) fn amount($($self_mut)* $self: $self_type, amount: Amount) -> $return_type {
$self.offer.amount = Some(amount);
$return_value
}
/// already passed is valid and can be checked for using [`Offer::is_expired`].
///
/// Successive calls to this method will override the previous setting.
- pub fn absolute_expiry(mut $self: $self_type, absolute_expiry: Duration) -> $return_type {
+ pub fn absolute_expiry($($self_mut)* $self: $self_type, absolute_expiry: Duration) -> $return_type {
$self.offer.absolute_expiry = Some(absolute_expiry);
$return_value
}
/// Sets the [`Offer::issuer`].
///
/// Successive calls to this method will override the previous setting.
- pub fn issuer(mut $self: $self_type, issuer: String) -> $return_type {
+ pub fn issuer($($self_mut)* $self: $self_type, issuer: String) -> $return_type {
$self.offer.issuer = Some(issuer);
$return_value
}
///
/// Successive calls to this method will add another blinded path. Caller is responsible for not
/// adding duplicate paths.
- pub fn path(mut $self: $self_type, path: BlindedPath) -> $return_type {
+ pub fn path($($self_mut)* $self: $self_type, path: BlindedPath) -> $return_type {
$self.offer.paths.get_or_insert_with(Vec::new).push(path);
$return_value
}
/// [`Quantity::One`].
///
/// Successive calls to this method will override the previous setting.
- pub fn supported_quantity(mut $self: $self_type, quantity: Quantity) -> $return_type {
+ pub fn supported_quantity($($self_mut)* $self: $self_type, quantity: Quantity) -> $return_type {
$self.offer.supported_quantity = quantity;
$return_value
}
/// Builds an [`Offer`] from the builder's settings.
- pub fn build(mut $self: $self_type) -> Result<Offer, Bolt12SemanticError> {
+ pub fn build($($self_mut)* $self: $self_type) -> Result<Offer, Bolt12SemanticError> {
match $self.offer.amount {
Some(Amount::Bitcoin { amount_msats }) => {
if amount_msats > MAX_VALUE_MSAT {
Ok($self.build_without_checks())
}
- fn build_without_checks(mut $self: $self_type) -> Offer {
+ fn build_without_checks($($self_mut)* $self: $self_type) -> Offer {
// Create the metadata for stateless verification of an InvoiceRequest.
if let Some(mut metadata) = $self.offer.metadata.take() {
if metadata.has_derivation_material() {
let mut bytes = Vec::new();
$self.offer.write(&mut bytes).unwrap();
- Offer { bytes, contents: $self.offer }
+ Offer {
+ bytes,
+ #[cfg(not(c_bindings))]
+ contents: $self.offer,
+ #[cfg(c_bindings)]
+ contents: $self.offer.clone()
+ }
}
} }
#[cfg(test)]
macro_rules! offer_builder_test_methods { (
- $self: ident, $self_type: ty, $return_type: ty, $return_value: expr
+ $self: ident, $self_type: ty, $return_type: ty, $return_value: expr $(, $self_mut: tt)?
) => {
- fn features_unchecked(mut $self: $self_type, features: OfferFeatures) -> $return_type {
+ #[cfg_attr(c_bindings, allow(dead_code))]
+ fn features_unchecked($($self_mut)* $self: $self_type, features: OfferFeatures) -> $return_type {
$self.offer.features = features;
$return_value
}
- pub(crate) fn clear_paths(mut $self: $self_type) -> $return_type {
+ #[cfg_attr(c_bindings, allow(dead_code))]
+ pub(crate) fn clear_chains($($self_mut)* $self: $self_type) -> $return_type {
+ $self.offer.chains = None;
+ $return_value
+ }
+
+ #[cfg_attr(c_bindings, allow(dead_code))]
+ pub(crate) fn clear_paths($($self_mut)* $self: $self_type) -> $return_type {
$self.offer.paths = None;
$return_value
}
+ #[cfg_attr(c_bindings, allow(dead_code))]
pub(super) fn build_unchecked($self: $self_type) -> Offer {
$self.build_without_checks()
}
} }
impl<'a, M: MetadataStrategy, T: secp256k1::Signing> OfferBuilder<'a, M, T> {
- offer_builder_methods!(self, Self, Self, self);
+ offer_builder_methods!(self, Self, Self, self, mut);
#[cfg(test)]
- offer_builder_test_methods!(self, Self, Self, self);
+ offer_builder_test_methods!(self, Self, Self, self, mut);
}
impl<'a> OfferBuilder<'a, ExplicitMetadata, secp256k1::SignOnly> {
}
impl<'a, T: secp256k1::Signing> OfferBuilder<'a, DerivedMetadata, T> {
- offer_derived_metadata_builder_methods!();
+ offer_derived_metadata_builder_methods!(T);
+}
+
+#[cfg(all(c_bindings, not(test)))]
+impl<'a> OfferWithExplicitMetadataBuilder<'a> {
+ offer_explicit_metadata_builder_methods!(self, &mut Self, (), ());
+ offer_builder_methods!(self, &mut Self, (), ());
+}
+
+#[cfg(all(c_bindings, test))]
+impl<'a> OfferWithExplicitMetadataBuilder<'a> {
+ offer_explicit_metadata_builder_methods!(self, &mut Self, &mut Self, self);
+ offer_builder_methods!(self, &mut Self, &mut Self, self);
+ offer_builder_test_methods!(self, &mut Self, &mut Self, self);
+}
+
+#[cfg(all(c_bindings, not(test)))]
+impl<'a> OfferWithDerivedMetadataBuilder<'a> {
+ offer_derived_metadata_builder_methods!(secp256k1::All);
+ offer_builder_methods!(self, &mut Self, (), ());
+}
+
+#[cfg(all(c_bindings, test))]
+impl<'a> OfferWithDerivedMetadataBuilder<'a> {
+ offer_derived_metadata_builder_methods!(secp256k1::All);
+ offer_builder_methods!(self, &mut Self, &mut Self, self);
+ offer_builder_test_methods!(self, &mut Self, &mut Self, self);
+}
+
+#[cfg(c_bindings)]
+impl<'a> From<OfferBuilder<'a, DerivedMetadata, secp256k1::All>>
+for OfferWithDerivedMetadataBuilder<'a> {
+ fn from(builder: OfferBuilder<'a, DerivedMetadata, secp256k1::All>) -> Self {
+ let OfferBuilder { offer, metadata_strategy, secp_ctx } = builder;
+
+ Self { offer, metadata_strategy, secp_ctx }
+ }
+}
+
+#[cfg(c_bindings)]
+impl<'a> From<OfferWithDerivedMetadataBuilder<'a>>
+for OfferBuilder<'a, DerivedMetadata, secp256k1::All> {
+ fn from(builder: OfferWithDerivedMetadataBuilder<'a>) -> Self {
+ let OfferWithDerivedMetadataBuilder { offer, metadata_strategy, secp_ctx } = builder;
+
+ Self { offer, metadata_strategy, secp_ctx }
+ }
}
/// An `Offer` is a potentially long-lived proposal for payment of a good or service.
/// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
/// [`Bolt12Invoice`]: crate::offers::invoice::Bolt12Invoice
#[derive(Clone, Debug)]
-#[cfg_attr(test, derive(PartialEq))]
pub struct Offer {
// The serialized offer. Needed when creating an `InvoiceRequest` if the offer contains unknown
// fields.
pub fn expects_quantity(&self) -> bool {
self.contents.expects_quantity()
}
+}
+macro_rules! request_invoice_derived_payer_id { ($self: ident, $builder: ty) => {
/// Similar to [`Offer::request_invoice`] except it:
/// - derives the [`InvoiceRequest::payer_id`] such that a different key can be used for each
/// request,
///
/// Useful to protect the sender's privacy.
///
- /// This is not exported to bindings users as builder patterns don't map outside of move semantics.
- ///
/// [`InvoiceRequest::payer_id`]: crate::offers::invoice_request::InvoiceRequest::payer_id
/// [`InvoiceRequest::payer_metadata`]: crate::offers::invoice_request::InvoiceRequest::payer_metadata
/// [`Bolt12Invoice::verify`]: crate::offers::invoice::Bolt12Invoice::verify
/// [`ExpandedKey`]: crate::ln::inbound_payment::ExpandedKey
- pub fn request_invoice_deriving_payer_id<'a, 'b, ES: Deref, T: secp256k1::Signing>(
- &'a self, expanded_key: &ExpandedKey, entropy_source: ES, secp_ctx: &'b Secp256k1<T>,
+ pub fn request_invoice_deriving_payer_id<
+ 'a, 'b, ES: Deref,
+ #[cfg(not(c_bindings))]
+ T: secp256k1::Signing
+ >(
+ &'a $self, expanded_key: &ExpandedKey, entropy_source: ES,
+ #[cfg(not(c_bindings))]
+ secp_ctx: &'b Secp256k1<T>,
+ #[cfg(c_bindings)]
+ secp_ctx: &'b Secp256k1<secp256k1::All>,
payment_id: PaymentId
- ) -> Result<InvoiceRequestBuilder<'a, 'b, DerivedPayerId, T>, Bolt12SemanticError>
+ ) -> Result<$builder, Bolt12SemanticError>
where
ES::Target: EntropySource,
{
- if self.offer_features().requires_unknown_bits() {
+ if $self.offer_features().requires_unknown_bits() {
return Err(Bolt12SemanticError::UnknownRequiredFeatures);
}
- Ok(InvoiceRequestBuilder::deriving_payer_id(
- self, expanded_key, entropy_source, secp_ctx, payment_id
- ))
+ Ok(<$builder>::deriving_payer_id($self, expanded_key, entropy_source, secp_ctx, payment_id))
}
+} }
+macro_rules! request_invoice_explicit_payer_id { ($self: ident, $builder: ty) => {
/// Similar to [`Offer::request_invoice_deriving_payer_id`] except uses `payer_id` for the
/// [`InvoiceRequest::payer_id`] instead of deriving a different key for each request.
///
/// Useful for recurring payments using the same `payer_id` with different invoices.
///
- /// This is not exported to bindings users as builder patterns don't map outside of move semantics.
- ///
/// [`InvoiceRequest::payer_id`]: crate::offers::invoice_request::InvoiceRequest::payer_id
pub fn request_invoice_deriving_metadata<ES: Deref>(
- &self, payer_id: PublicKey, expanded_key: &ExpandedKey, entropy_source: ES,
+ &$self, payer_id: PublicKey, expanded_key: &ExpandedKey, entropy_source: ES,
payment_id: PaymentId
- ) -> Result<InvoiceRequestBuilder<ExplicitPayerId, secp256k1::SignOnly>, Bolt12SemanticError>
+ ) -> Result<$builder, Bolt12SemanticError>
where
ES::Target: EntropySource,
{
- if self.offer_features().requires_unknown_bits() {
+ if $self.offer_features().requires_unknown_bits() {
return Err(Bolt12SemanticError::UnknownRequiredFeatures);
}
- Ok(InvoiceRequestBuilder::deriving_metadata(
- self, payer_id, expanded_key, entropy_source, payment_id
- ))
+ Ok(<$builder>::deriving_metadata($self, payer_id, expanded_key, entropy_source, payment_id))
}
/// Creates an [`InvoiceRequestBuilder`] for the offer with the given `metadata` and `payer_id`,
///
/// Errors if the offer contains unknown required features.
///
- /// This is not exported to bindings users as builder patterns don't map outside of move semantics.
- ///
/// [`InvoiceRequest`]: crate::offers::invoice_request::InvoiceRequest
pub fn request_invoice(
- &self, metadata: Vec<u8>, payer_id: PublicKey
- ) -> Result<InvoiceRequestBuilder<ExplicitPayerId, secp256k1::SignOnly>, Bolt12SemanticError> {
- if self.offer_features().requires_unknown_bits() {
+ &$self, metadata: Vec<u8>, payer_id: PublicKey
+ ) -> Result<$builder, Bolt12SemanticError> {
+ if $self.offer_features().requires_unknown_bits() {
return Err(Bolt12SemanticError::UnknownRequiredFeatures);
}
- Ok(InvoiceRequestBuilder::new(self, metadata, payer_id))
+ Ok(<$builder>::new($self, metadata, payer_id))
}
+} }
- #[cfg(test)]
+#[cfg(not(c_bindings))]
+impl Offer {
+ request_invoice_derived_payer_id!(self, InvoiceRequestBuilder<'a, 'b, DerivedPayerId, T>);
+ request_invoice_explicit_payer_id!(self, InvoiceRequestBuilder<ExplicitPayerId, secp256k1::SignOnly>);
+}
+
+#[cfg(c_bindings)]
+impl Offer {
+ request_invoice_derived_payer_id!(self, InvoiceRequestWithDerivedPayerIdBuilder<'a, 'b>);
+ request_invoice_explicit_payer_id!(self, InvoiceRequestWithExplicitPayerIdBuilder);
+}
+
+#[cfg(test)]
+impl Offer {
pub(super) fn as_tlv_stream(&self) -> OfferTlvStreamRef {
self.contents.as_tlv_stream()
}
}
}
+impl PartialEq for Offer {
+ fn eq(&self, other: &Self) -> bool {
+ self.bytes.eq(&other.bytes)
+ }
+}
+
+impl Eq for Offer {}
+
+impl Hash for Offer {
+ fn hash<H: Hasher>(&self, state: &mut H) {
+ self.bytes.hash(state);
+ }
+}
+
impl OfferContents {
pub fn chains(&self) -> Vec<ChainHash> {
self.chains.as_ref().cloned().unwrap_or_else(|| vec![self.implied_chain()])
#[cfg(test)]
mod tests {
- use super::{Amount, Offer, OfferBuilder, OfferTlvStreamRef, Quantity};
+ use super::{Amount, Offer, OfferTlvStreamRef, Quantity};
+ #[cfg(not(c_bindings))]
+ use {
+ super::OfferBuilder,
+ };
+ #[cfg(c_bindings)]
+ use {
+ super::OfferWithExplicitMetadataBuilder as OfferBuilder,
+ };
use bitcoin::blockdata::constants::ChainHash;
use bitcoin::network::constants::Network;
let entropy = FixedEntropy {};
let secp_ctx = Secp256k1::new();
+ #[cfg(c_bindings)]
+ use super::OfferWithDerivedMetadataBuilder as OfferBuilder;
let offer = OfferBuilder
::deriving_signing_pubkey(desc, node_id, &expanded_key, &entropy, &secp_ctx)
.amount_msats(1000)
],
};
+ #[cfg(c_bindings)]
+ use super::OfferWithDerivedMetadataBuilder as OfferBuilder;
let offer = OfferBuilder
::deriving_signing_pubkey(desc, node_id, &expanded_key, &entropy, &secp_ctx)
.amount_msats(1000)
assert_eq!(tlv_stream.amount, Some(1000));
assert_eq!(tlv_stream.currency, None);
+ #[cfg(not(c_bindings))]
let builder = OfferBuilder::new("foo".into(), pubkey(42))
.amount(currency_amount.clone());
+ #[cfg(c_bindings)]
+ let mut builder = OfferBuilder::new("foo".into(), pubkey(42));
+ #[cfg(c_bindings)]
+ builder.amount(currency_amount.clone());
let tlv_stream = builder.offer.as_tlv_stream();
assert_eq!(builder.offer.amount, Some(currency_amount.clone()));
assert_eq!(tlv_stream.amount, Some(10));
projects / rust-lightning / blobdiff