X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=ldk-c-bindings;a=blobdiff_plain;f=lightning-c-bindings%2Fsrc%2Flightning%2Foffers%2Fmerkle.rs;fp=lightning-c-bindings%2Fsrc%2Flightning%2Foffers%2Fmerkle.rs;h=106169c2d2988ec398c2ef170baae9b04f854adb;hp=0000000000000000000000000000000000000000;hb=3e46e1794f14640e35f09cc6da4169c152de34ce;hpb=53e91fd10d98313d2175470416f635d080e67e65

diff --git a/lightning-c-bindings/src/lightning/offers/merkle.rs b/lightning-c-bindings/src/lightning/offers/merkle.rs
new file mode 100644
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+++ b/lightning-c-bindings/src/lightning/offers/merkle.rs
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+// 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.
+
+//! Tagged hashes for use in signature calculation and verification.
+
+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::offers::merkle::TaggedHash as nativeTaggedHashImport;
+pub(crate) type nativeTaggedHash = nativeTaggedHashImport;
+
+/// A hash for use in a specific context by tweaking with a context-dependent tag as per [BIP 340]
+/// and computed over the merkle root of a TLV stream to sign as defined in [BOLT 12].
+///
+/// [BIP 340]: https://github.com/bitcoin/bips/blob/master/bip-0340.mediawiki
+/// [BOLT 12]: https://github.com/rustyrussell/lightning-rfc/blob/guilt/offers/12-offer-encoding.md#signature-calculation
+#[must_use]
+#[repr(C)]
+pub struct TaggedHash {
+	/// 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 nativeTaggedHash,
+	/// 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 TaggedHash {
+	fn drop(&mut self) {
+		if self.is_owned && !<*mut nativeTaggedHash>::is_null(self.inner) {
+			let _ = unsafe { Box::from_raw(ObjOps::untweak_ptr(self.inner)) };
+		}
+	}
+}
+/// Frees any resources used by the TaggedHash, if is_owned is set and inner is non-NULL.
+#[no_mangle]
+pub extern "C" fn TaggedHash_free(this_obj: TaggedHash) { }
+#[allow(unused)]
+/// Used only if an object of this type is returned as a trait impl by a method
+pub(crate) extern "C" fn TaggedHash_free_void(this_ptr: *mut c_void) {
+	let _ = unsafe { Box::from_raw(this_ptr as *mut nativeTaggedHash) };
+}
+#[allow(unused)]
+impl TaggedHash {
+	pub(crate) fn get_native_ref(&self) -> &'static nativeTaggedHash {
+		unsafe { &*ObjOps::untweak_ptr(self.inner) }
+	}
+	pub(crate) fn get_native_mut_ref(&self) -> &'static mut nativeTaggedHash {
+		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 nativeTaggedHash {
+		assert!(self.is_owned);
+		let ret = ObjOps::untweak_ptr(self.inner);
+		self.inner = core::ptr::null_mut();
+		ret
+	}
+}