X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=ldk-c-bindings;a=blobdiff_plain;f=lightning-c-bindings%2Fsrc%2Flightning%2Fln%2Fonion_payment.rs;fp=lightning-c-bindings%2Fsrc%2Flightning%2Fln%2Fonion_payment.rs;h=ddfd5612213e3dbec7d0bed3576cddaf10949bb2;hp=0000000000000000000000000000000000000000;hb=0ac4dbdb8352c898100b34f0ef8ed9cebfea7786;hpb=c16401631dddadcefa37b05074ca7def51b85af4

diff --git a/lightning-c-bindings/src/lightning/ln/onion_payment.rs b/lightning-c-bindings/src/lightning/ln/onion_payment.rs
new file mode 100644
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+++ b/lightning-c-bindings/src/lightning/ln/onion_payment.rs
@@ -0,0 +1,140 @@
+// This file is Copyright its original authors, visible in version control
+// history and in the source files from which this was generated.
+//
+// This file is licensed under the license available in the LICENSE or LICENSE.md
+// file in the root of this repository or, if no such file exists, the same
+// license as that which applies to the original source files from which this
+// source was automatically generated.
+
+//! Utilities to decode payment onions and do contextless validation of incoming payments.
+//!
+//! Primarily features [`peel_payment_onion`], which allows the decoding of an onion statelessly
+//! and can be used to predict whether we'd accept a payment.
+
+use alloc::str::FromStr;
+use alloc::string::String;
+use core::ffi::c_void;
+use core::convert::Infallible;
+use bitcoin::hashes::Hash;
+use crate::c_types::*;
+#[cfg(feature="no-std")]
+use alloc::{vec::Vec, boxed::Box};
+
+
+use lightning::ln::onion_payment::InboundHTLCErr as nativeInboundHTLCErrImport;
+pub(crate) type nativeInboundHTLCErr = nativeInboundHTLCErrImport;
+
+/// Invalid inbound onion payment.
+#[must_use]
+#[repr(C)]
+pub struct InboundHTLCErr {
+	/// A pointer to the opaque Rust object.
+
+	/// Nearly everywhere, inner must be non-null, however in places where
+	/// the Rust equivalent takes an Option, it may be set to null to indicate None.
+	pub inner: *mut nativeInboundHTLCErr,
+	/// Indicates that this is the only struct which contains the same pointer.
+
+	/// Rust functions which take ownership of an object provided via an argument require
+	/// this to be true and invalidate the object pointed to by inner.
+	pub is_owned: bool,
+}
+
+impl Drop for InboundHTLCErr {
+	fn drop(&mut self) {
+		if self.is_owned && !<*mut nativeInboundHTLCErr>::is_null(self.inner) {
+			let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
+		}
+	}
+}
+/// Frees any resources used by the InboundHTLCErr, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_free(this_obj: InboundHTLCErr) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn InboundHTLCErr_free_void(this_ptr: *mut c_void) {
+	let _ = unsafe { Box::from_raw(this_ptr as *mut nativeInboundHTLCErr) };
+}
+#[allow(unused)]
+impl InboundHTLCErr {
+	pub(crate) fn get_native_ref(&self) -> &'static nativeInboundHTLCErr {
+		unsafe { &*ObjOps::untweak_ptr(self.inner) }
+	}
+	pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeInboundHTLCErr {
+		unsafe { &mut *ObjOps::untweak_ptr(self.inner) }
+	}
+	/// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
+	pub(crate) fn take_inner(mut self) -> *mut nativeInboundHTLCErr {
+		assert!(self.is_owned);
+		let ret = ObjOps::untweak_ptr(self.inner);
+		self.inner = core::ptr::null_mut();
+		ret
+	}
+}
+/// BOLT 4 error code.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_get_err_code(this_ptr: &InboundHTLCErr) -> u16 {
+	let mut inner_val = &mut this_ptr.get_native_mut_ref().err_code;
+	*inner_val
+}
+/// BOLT 4 error code.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_set_err_code(this_ptr: &mut InboundHTLCErr, mut val: u16) {
+	unsafe { &mut *ObjOps::untweak_ptr(this_ptr.inner) }.err_code = val;
+}
+/// Data attached to this error.
+///
+/// Returns a copy of the field.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_get_err_data(this_ptr: &InboundHTLCErr) -> crate::c_types::derived::CVec_u8Z {
+	let mut inner_val = this_ptr.get_native_mut_ref().err_data.clone();
+	let mut local_inner_val = Vec::new(); for mut item in inner_val.drain(..) { local_inner_val.push( { item }); };
+	local_inner_val.into()
+}
+/// Data attached to this error.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_set_err_data(this_ptr: &mut InboundHTLCErr, mut val: crate::c_types::derived::CVec_u8Z) {
+	let mut local_val = Vec::new(); for mut item in val.into_rust().drain(..) { local_val.push( { item }); };
+	unsafe { &mut *ObjOps::untweak_ptr(this_ptr.inner) }.err_data = local_val;
+}
+/// Error message text.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_get_msg(this_ptr: &InboundHTLCErr) -> crate::c_types::Str {
+	let mut inner_val = &mut this_ptr.get_native_mut_ref().msg;
+	inner_val.into()
+}
+/// Error message text.
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_set_msg(this_ptr: &mut InboundHTLCErr, mut val: crate::c_types::Str) {
+	unsafe { &mut *ObjOps::untweak_ptr(this_ptr.inner) }.msg = val.into_str();
+}
+/// Constructs a new InboundHTLCErr given each field
+#[must_use]
+#[no_mangle]
+pub extern "C" fn InboundHTLCErr_new(mut err_code_arg: u16, mut err_data_arg: crate::c_types::derived::CVec_u8Z, mut msg_arg: crate::c_types::Str) -> InboundHTLCErr {
+	let mut local_err_data_arg = Vec::new(); for mut item in err_data_arg.into_rust().drain(..) { local_err_data_arg.push( { item }); };
+	InboundHTLCErr { inner: ObjOps::heap_alloc(nativeInboundHTLCErr {
+		err_code: err_code_arg,
+		err_data: local_err_data_arg,
+		msg: msg_arg.into_str(),
+	}), is_owned: true }
+}
+/// Get a string which allows debug introspection of a InboundHTLCErr object
+pub extern "C" fn InboundHTLCErr_debug_str_void(o: *const c_void) -> Str {
+	alloc::format!("{:?}", unsafe { o as *const crate::lightning::ln::onion_payment::InboundHTLCErr }).into()}
+/// Peel one layer off an incoming onion, returning a [`PendingHTLCInfo`] that contains information
+/// about the intended next-hop for the HTLC.
+///
+/// This does all the relevant context-free checks that LDK requires for payment relay or
+/// acceptance. If the payment is to be received, and the amount matches the expected amount for
+/// a given invoice, this indicates the [`msgs::UpdateAddHTLC`], once fully committed in the
+/// channel, will generate an [`Event::PaymentClaimable`].
+///
+/// [`Event::PaymentClaimable`]: crate::events::Event::PaymentClaimable
+#[no_mangle]
+pub extern "C" fn peel_payment_onion(msg: &crate::lightning::ln::msgs::UpdateAddHTLC, node_signer: &crate::lightning::sign::NodeSigner, logger: &crate::lightning::util::logger::Logger, mut cur_height: u32, mut accept_mpp_keysend: bool, mut allow_skimmed_fees: bool) -> crate::c_types::derived::CResult_PendingHTLCInfoInboundHTLCErrZ {
+	let mut ret = lightning::ln::onion_payment::peel_payment_onion(msg.get_native_ref(), node_signer, logger, secp256k1::global::SECP256K1, cur_height, accept_mpp_keysend, allow_skimmed_fees);
+	let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::lightning::ln::channelmanager::PendingHTLCInfo { inner: ObjOps::heap_alloc(o), is_owned: true } }).into(), Err(mut e) => crate::c_types::CResultTempl::err( { crate::lightning::ln::onion_payment::InboundHTLCErr { inner: ObjOps::heap_alloc(e), is_owned: true } }).into() };
+	local_ret
+}
+