X-Git-Url: http://git.bitcoin.ninja/index.cgi?a=blobdiff_plain;f=lightning-c-bindings%2Fsrc%2Fc_types%2Fmod.rs;h=f23f002d05c7ccfe8607ffd5b30eae0c79d0017b;hb=bcf07b1fad32d14e92c9c30976aa66b72a3860b0;hp=3f8c900be02fd4d767d37eabddb21bcb859fa016;hpb=ecd28c5438784a2f6e0a561386d037af99a00f92;p=ldk-c-bindings diff --git a/lightning-c-bindings/src/c_types/mod.rs b/lightning-c-bindings/src/c_types/mod.rs index 3f8c900..f23f002 100644 --- a/lightning-c-bindings/src/c_types/mod.rs +++ b/lightning-c-bindings/src/c_types/mod.rs @@ -4,6 +4,7 @@ pub mod derived; use bitcoin::Transaction as BitcoinTransaction; +use bitcoin::Witness as BitcoinWitness; use bitcoin::hashes::Hash; use bitcoin::secp256k1::PublicKey as SecpPublicKey; use bitcoin::secp256k1::SecretKey as SecpSecretKey; @@ -41,15 +42,44 @@ impl From for NotConstructable { #[derive(PartialEq, Eq, Copy, Clone)] #[allow(non_camel_case_types)] #[repr(C)] -pub struct u5(u8); +pub struct U5(u8); -impl From for u5 { +impl From for U5 { fn from(o: bech32::u5) -> Self { Self(o.to_u8()) } } -impl Into for u5 { +impl Into for U5 { fn into(self) -> bech32::u5 { bech32::u5::try_from_u8(self.0).expect("u5 objects must be in the range 0..32") } } +/// Unsigned, 128-bit integer. +/// +/// Because LLVM implements an incorrect ABI for 128-bit integers, a wrapper type is defined here. +/// See https://github.com/rust-lang/rust/issues/54341 for more details. +#[derive(PartialEq, Eq, Copy, Clone)] +#[allow(non_camel_case_types)] +#[repr(C)] +pub struct U128 { + /// The 128-bit integer, as 16 little-endian bytes + pub le_bytes: [u8; 16], +} + +#[no_mangle] +/// Gets the 128-bit integer, as 16 little-endian bytes +pub extern "C" fn U128_le_bytes(val: U128) -> SixteenBytes { SixteenBytes { data: val.le_bytes } } +#[no_mangle] +/// Constructs a new U128 from 16 little-endian bytes +pub extern "C" fn U128_new(le_bytes: SixteenBytes) -> U128 { U128 { le_bytes: le_bytes.data } } + +impl From for U128 { + fn from(o: u128) -> Self { Self { le_bytes: o.to_le_bytes() } } +} +impl From<&mut u128> for U128 { + fn from(o: &mut u128) -> U128 { Self::from(*o) } +} +impl Into for U128 { + fn into(self) -> u128 { u128::from_le_bytes(self.le_bytes) } +} + /// Integer in the range `0..=16` #[derive(PartialEq, Eq, Copy, Clone)] #[repr(C)] @@ -316,8 +346,8 @@ pub enum IOError { UnexpectedEof, } impl IOError { - pub(crate) fn from_rust(err: io::Error) -> Self { - match err.kind() { + pub(crate) fn from_rust_kind(err: io::ErrorKind) -> Self { + match err { io::ErrorKind::NotFound => IOError::NotFound, io::ErrorKind::PermissionDenied => IOError::PermissionDenied, io::ErrorKind::ConnectionRefused => IOError::ConnectionRefused, @@ -339,8 +369,11 @@ impl IOError { _ => IOError::Other, } } - pub(crate) fn to_rust(&self) -> io::Error { - io::Error::new(match self { + pub(crate) fn from_rust(err: io::Error) -> Self { + Self::from_rust_kind(err.kind()) + } + pub(crate) fn to_rust_kind(&self) -> io::ErrorKind { + match self { IOError::NotFound => io::ErrorKind::NotFound, IOError::PermissionDenied => io::ErrorKind::PermissionDenied, IOError::ConnectionRefused => io::ErrorKind::ConnectionRefused, @@ -359,7 +392,10 @@ impl IOError { IOError::Interrupted => io::ErrorKind::Interrupted, IOError::Other => io::ErrorKind::Other, IOError::UnexpectedEof => io::ErrorKind::UnexpectedEof, - }, "") + } + } + pub(crate) fn to_rust(&self) -> io::Error { + io::Error::new(self.to_rust_kind(), "") } } @@ -425,6 +461,57 @@ impl Clone for Transaction { /// Frees the data buffer, if data_is_owned is set and datalen > 0. pub extern "C" fn Transaction_free(_res: Transaction) { } +#[repr(C)] +/// A serialized witness. +pub struct Witness { + /// The serialized transaction data. + /// + /// This is non-const for your convenience, an object passed to Rust is never written to. + pub data: *mut u8, + /// The length of the serialized transaction + pub datalen: usize, + /// Whether the data pointed to by `data` should be freed or not. + pub data_is_owned: bool, +} +impl Witness { + fn from_vec(vec: Vec) -> Self { + let datalen = vec.len(); + let data = Box::into_raw(vec.into_boxed_slice()); + Self { + data: unsafe { (*data).as_mut_ptr() }, + datalen, + data_is_owned: true, + } + } + pub(crate) fn into_bitcoin(&self) -> BitcoinWitness { + ::bitcoin::consensus::encode::deserialize(unsafe { core::slice::from_raw_parts(self.data, self.datalen) }).unwrap() + } + pub(crate) fn from_bitcoin(btc: &BitcoinWitness) -> Self { + let vec = ::bitcoin::consensus::encode::serialize(btc); + Self::from_vec(vec) + } +} + +impl Drop for Witness { + fn drop(&mut self) { + if self.data_is_owned && self.datalen != 0 { + let _ = derived::CVec_u8Z { data: self.data as *mut u8, datalen: self.datalen }; + } + } +} +impl Clone for Witness { + fn clone(&self) -> Self { + let sl = unsafe { core::slice::from_raw_parts(self.data, self.datalen) }; + let mut v = Vec::new(); + v.extend_from_slice(&sl); + Self::from_vec(v) + } +} + +#[no_mangle] +/// Frees the data pointed to by data +pub extern "C" fn Witness_free(_res: Witness) { } + pub(crate) fn bitcoin_to_C_outpoint(outpoint: ::bitcoin::blockdata::transaction::OutPoint) -> crate::lightning::chain::transaction::OutPoint { crate::lightning::chain::transaction::OutPoint_new(ThirtyTwoBytes { data: outpoint.txid.into_inner() }, outpoint.vout.try_into().unwrap()) } @@ -670,10 +757,10 @@ impl Drop for CResultTempl { fn drop(&mut self) { if self.result_ok { if unsafe { !self.contents.result.is_null() } { - unsafe { Box::from_raw(self.contents.result) }; + let _ = unsafe { Box::from_raw(self.contents.result) }; } } else if unsafe { !self.contents.err.is_null() } { - unsafe { Box::from_raw(self.contents.err) }; + let _ = unsafe { Box::from_raw(self.contents.err) }; } } } @@ -774,7 +861,7 @@ impl SmartPtr { impl Drop for SmartPtr { fn drop(&mut self) { if self.ptr != core::ptr::null_mut() { - unsafe { Box::from_raw(self.ptr); } + let _ = unsafe { Box::from_raw(self.ptr) }; } } }