X-Git-Url: http://git.bitcoin.ninja/index.cgi?p=ldk-c-bindings;a=blobdiff_plain;f=lightning-c-bindings%2Fsrc%2Fc_types%2Fmod.rs;fp=lightning-c-bindings%2Fsrc%2Fc_types%2Fmod.rs;h=3fe5eb62eece32b501e415fa22ae8bca1846d088;hp=eb9be439a1acf06b9a7ab8fe6b0676b37ccc195d;hb=00ed41fad818748a795634e82040b04c1ea4455d;hpb=c14513fd07359c39e2e27c2e7d475ca522f03db5 diff --git a/lightning-c-bindings/src/c_types/mod.rs b/lightning-c-bindings/src/c_types/mod.rs index eb9be43..3fe5eb6 100644 --- a/lightning-c-bindings/src/c_types/mod.rs +++ b/lightning-c-bindings/src/c_types/mod.rs @@ -5,6 +5,8 @@ pub mod derived; use bitcoin::Transaction as BitcoinTransaction; use bitcoin::Witness as BitcoinWitness; +use bitcoin::address; +use bitcoin::address::WitnessProgram as BitcoinWitnessProgram; use bitcoin::hashes::Hash; use bitcoin::secp256k1::PublicKey as SecpPublicKey; use bitcoin::secp256k1::SecretKey as SecpSecretKey; @@ -15,7 +17,6 @@ use bitcoin::secp256k1::ecdsa::RecoveryId; use bitcoin::secp256k1::ecdsa::RecoverableSignature as SecpRecoverableSignature; use bitcoin::secp256k1::Scalar as SecpScalar; use bitcoin::bech32; -use bitcoin::util::address; use core::convert::TryInto; // Bindings need at least rustc 1.34 use alloc::borrow::ToOwned; @@ -96,6 +97,58 @@ impl Into for WitnessVersion { } } +/// A segregated witness version byte and script bytes +#[repr(C)] +#[derive(Clone)] +pub struct WitnessProgram { + version: WitnessVersion, + program: derived::CVec_u8Z, +} +impl WitnessProgram { + pub(crate) fn from_bitcoin(o: BitcoinWitnessProgram) -> Self { + Self { + version: o.version().into(), + program: o.program().as_bytes().to_vec().into(), + } + } + pub(crate) fn into_bitcoin(mut self) -> BitcoinWitnessProgram { + BitcoinWitnessProgram::new( + self.version.into(), + self.program.into_rust(), + ).expect("Program length was previously checked") + } +} + +#[no_mangle] +/// Constructs a new WitnessProgram given a version and program bytes. +/// +/// The program MUST be at least 2 bytes and no longer than 40 bytes long. +/// Further, if the version is 0, the program MUST be either exactly 20 or exactly 32 bytes long. +pub extern "C" fn WitnessProgram_new(version: WitnessVersion, program: derived::CVec_u8Z) -> WitnessProgram { + assert!(program.datalen >= 2, "WitnessProgram program lengths must be at least 2 bytes long"); + assert!(program.datalen <= 40, "WitnessProgram program lengths must be no longer than 40 bytes"); + if version.0 == 0 { + assert!(program.datalen == 20 || program.datalen == 32, "WitnessProgram program length must be 20 or 32 for version-0 programs"); + } + WitnessProgram { version, program } +} +#[no_mangle] +/// Gets the `WitnessVersion` of the given `WitnessProgram` +pub extern "C" fn WitnessProgram_get_version(prog: &WitnessProgram) -> WitnessVersion { + prog.version +} +#[no_mangle] +/// Gets the witness program bytes of the given `WitnessProgram` +pub extern "C" fn WitnessProgram_get_program(prog: &WitnessProgram) -> u8slice { + u8slice::from_vec(&prog.program) +} +#[no_mangle] +/// Creates a new WitnessProgram which has the same data as `orig` +pub extern "C" fn WitnessProgram_clone(orig: &WitnessProgram) -> WitnessProgram { orig.clone() } +#[no_mangle] +/// Releases any memory held by the given `WitnessProgram` (which is currently none) +pub extern "C" fn WitnessProgram_free(o: WitnessProgram) { } + #[derive(Clone)] #[repr(C)] /// Represents a valid secp256k1 public key serialized in "compressed form" as a 33 byte array. @@ -534,7 +587,7 @@ pub extern "C" fn Witness_clone(orig: &Witness) -> Witness { orig.clone() } 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()) + crate::lightning::chain::transaction::OutPoint_new(ThirtyTwoBytes { data: *outpoint.txid.as_ref() }, outpoint.vout.try_into().unwrap()) } pub(crate) fn C_to_bitcoin_outpoint(outpoint: crate::lightning::chain::transaction::OutPoint) -> ::bitcoin::blockdata::transaction::OutPoint { unsafe { @@ -570,22 +623,44 @@ impl TxIn { witness: Witness::from_bitcoin(&txin.witness), script_sig: derived::CVec_u8Z::from(txin.script_sig.clone().into_bytes()), sequence: txin.sequence.0, - previous_txid: ThirtyTwoBytes { data: txin.previous_output.txid.into_inner() }, + previous_txid: ThirtyTwoBytes { data: *txin.previous_output.txid.as_ref() }, previous_vout: txin.previous_output.vout, } } } - -#[no_mangle] -/// Frees the witness and script_sig in a TxIn -pub extern "C" fn TxIn_free(_res: TxIn) { } - #[no_mangle] /// Convenience function for constructing a new TxIn pub extern "C" fn TxIn_new(witness: Witness, script_sig: derived::CVec_u8Z, sequence: u32, previous_txid: ThirtyTwoBytes, previous_vout: u32) -> TxIn { TxIn { witness, script_sig, sequence, previous_txid, previous_vout } } - +#[no_mangle] +/// Gets the `witness` in the given `TxIn`. +pub extern "C" fn TxIn_get_witness(txin: &TxIn) -> Witness { + txin.witness.clone() +} +#[no_mangle] +/// Gets the `script_sig` in the given `TxIn`. +pub extern "C" fn TxIn_get_script_sig(txin: &TxIn) -> u8slice { + u8slice::from_vec(&txin.script_sig) +} +#[no_mangle] +/// Gets the `sequence` in the given `TxIn`. +pub extern "C" fn TxIn_get_sequence(txin: &TxIn) -> u32 { + txin.sequence +} +#[no_mangle] +/// Gets the previous outpoint txid in the given `TxIn`. +pub extern "C" fn TxIn_get_previous_txid(txin: &TxIn) -> ThirtyTwoBytes { + txin.previous_txid +} +#[no_mangle] +/// Gets the previout outpoint index in the given `TxIn`. +pub extern "C" fn TxIn_get_previous_vout(txin: &TxIn) -> u32 { + txin.previous_vout +} +#[no_mangle] +/// Frees the witness and script_sig in a TxIn +pub extern "C" fn TxIn_free(_res: TxIn) { } #[repr(C)] #[derive(Clone)] @@ -619,6 +694,16 @@ pub extern "C" fn TxOut_new(script_pubkey: derived::CVec_u8Z, value: u64) -> TxO TxOut { script_pubkey, value } } #[no_mangle] +/// Gets the `script_pubkey` in the given `TxOut`. +pub extern "C" fn TxOut_get_script_pubkey(txout: &TxOut) -> u8slice { + u8slice::from_vec(&txout.script_pubkey) +} +#[no_mangle] +/// Gets the value in the given `TxOut`. +pub extern "C" fn TxOut_get_value(txout: &TxOut) -> u64 { + txout.value +} +#[no_mangle] /// Frees the data pointed to by script_pubkey. pub extern "C" fn TxOut_free(_res: TxOut) { } #[no_mangle]