1 //! keysinterface provides keys into rust-lightning and defines some useful enums which describe
2 //! spendable on-chain outputs which the user owns and is responsible for using just as any other
3 //! on-chain output which is theirs.
6 use bitcoin::hashes::Hash;
9 /// When on-chain outputs are created by rust-lightning (which our counterparty is not able to
10 /// claim at any point in the future) an event is generated which you must track and be able to
11 /// spend on-chain. The information needed to do this is provided in this enum, including the
12 /// outpoint describing which txid and output index is available, the full output which exists at
13 /// that txid/index, and any keys or other information required to sign.
17 pub enum SpendableOutputDescriptor {
18 /// An output to a script which was provided via KeysInterface, thus you should already know
19 /// how to spend it. No keys are provided as rust-lightning was never given any keys - only the
20 /// script_pubkey as it appears in the output.
21 /// These may include outputs from a transaction punishing our counterparty or claiming an HTLC
22 /// on-chain using the payment preimage or after it has timed out.
24 outpoint: crate::chain::transaction::OutPoint,
25 output: crate::c_types::TxOut,
27 /// An output to a P2WSH script which can be spent with a single signature after a CSV delay.
29 /// The witness in the spending input should be:
30 /// <BIP 143 signature> <empty vector> (MINIMALIF standard rule) <provided witnessScript>
32 /// Note that the nSequence field in the spending input must be set to to_self_delay
33 /// (which means the transaction is not broadcastable until at least to_self_delay
34 /// blocks after the outpoint confirms).
36 /// These are generally the result of a \"revocable\" output to us, spendable only by us unless
37 /// it is an output from an old state which we broadcast (which should never happen).
39 /// To derive the delayed_payment key which is used to sign for this input, you must pass the
40 /// holder delayed_payment_base_key (ie the private key which corresponds to the pubkey in
41 /// ChannelKeys::pubkeys().delayed_payment_basepoint) and the provided per_commitment_point to
42 /// chan_utils::derive_private_key. The public key can be generated without the secret key
43 /// using chan_utils::derive_public_key and only the delayed_payment_basepoint which appears in
44 /// ChannelKeys::pubkeys().
46 /// To derive the revocation_pubkey provided here (which is used in the witness
47 /// script generation), you must pass the counterparty revocation_basepoint (which appears in the
48 /// call to ChannelKeys::on_accept) and the provided per_commitment point
49 /// to chan_utils::derive_public_revocation_key.
51 /// The witness script which is hashed and included in the output script_pubkey may be
52 /// regenerated by passing the revocation_pubkey (derived as above), our delayed_payment pubkey
53 /// (derived as above), and the to_self_delay contained here to
54 /// chan_utils::get_revokeable_redeemscript.
56 outpoint: crate::chain::transaction::OutPoint,
57 per_commitment_point: crate::c_types::PublicKey,
59 output: crate::c_types::TxOut,
60 key_derivation_params: crate::c_types::derived::C2Tuple_u64u64Z,
61 revocation_pubkey: crate::c_types::PublicKey,
63 /// An output to a P2WPKH, spendable exclusively by our payment key (ie the private key which
64 /// corresponds to the public key in ChannelKeys::pubkeys().payment_point).
65 /// The witness in the spending input, is, thus, simply:
66 /// <BIP 143 signature> <payment key>
68 /// These are generally the result of our counterparty having broadcast the current state,
69 /// allowing us to claim the non-HTLC-encumbered outputs immediately.
70 StaticOutputCounterpartyPayment {
71 outpoint: crate::chain::transaction::OutPoint,
72 output: crate::c_types::TxOut,
73 key_derivation_params: crate::c_types::derived::C2Tuple_u64u64Z,
76 use lightning::chain::keysinterface::SpendableOutputDescriptor as nativeSpendableOutputDescriptor;
77 impl SpendableOutputDescriptor {
79 pub(crate) fn to_native(&self) -> nativeSpendableOutputDescriptor {
81 SpendableOutputDescriptor::StaticOutput {ref outpoint, ref output, } => {
82 let mut outpoint_nonref = (*outpoint).clone();
83 let mut output_nonref = (*output).clone();
84 nativeSpendableOutputDescriptor::StaticOutput {
85 outpoint: *unsafe { Box::from_raw(outpoint_nonref.take_ptr()) },
86 output: output_nonref.into_rust(),
89 SpendableOutputDescriptor::DynamicOutputP2WSH {ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref revocation_pubkey, } => {
90 let mut outpoint_nonref = (*outpoint).clone();
91 let mut per_commitment_point_nonref = (*per_commitment_point).clone();
92 let mut to_self_delay_nonref = (*to_self_delay).clone();
93 let mut output_nonref = (*output).clone();
94 let mut key_derivation_params_nonref = (*key_derivation_params).clone();
95 let (mut orig_key_derivation_params_nonref_0, mut orig_key_derivation_params_nonref_1) = key_derivation_params_nonref.to_rust(); let mut local_key_derivation_params_nonref = (orig_key_derivation_params_nonref_0, orig_key_derivation_params_nonref_1);
96 let mut revocation_pubkey_nonref = (*revocation_pubkey).clone();
97 nativeSpendableOutputDescriptor::DynamicOutputP2WSH {
98 outpoint: *unsafe { Box::from_raw(outpoint_nonref.take_ptr()) },
99 per_commitment_point: per_commitment_point_nonref.into_rust(),
100 to_self_delay: to_self_delay_nonref,
101 output: output_nonref.into_rust(),
102 key_derivation_params: local_key_derivation_params_nonref,
103 revocation_pubkey: revocation_pubkey_nonref.into_rust(),
106 SpendableOutputDescriptor::StaticOutputCounterpartyPayment {ref outpoint, ref output, ref key_derivation_params, } => {
107 let mut outpoint_nonref = (*outpoint).clone();
108 let mut output_nonref = (*output).clone();
109 let mut key_derivation_params_nonref = (*key_derivation_params).clone();
110 let (mut orig_key_derivation_params_nonref_0, mut orig_key_derivation_params_nonref_1) = key_derivation_params_nonref.to_rust(); let mut local_key_derivation_params_nonref = (orig_key_derivation_params_nonref_0, orig_key_derivation_params_nonref_1);
111 nativeSpendableOutputDescriptor::StaticOutputCounterpartyPayment {
112 outpoint: *unsafe { Box::from_raw(outpoint_nonref.take_ptr()) },
113 output: output_nonref.into_rust(),
114 key_derivation_params: local_key_derivation_params_nonref,
120 pub(crate) fn into_native(self) -> nativeSpendableOutputDescriptor {
122 SpendableOutputDescriptor::StaticOutput {mut outpoint, mut output, } => {
123 nativeSpendableOutputDescriptor::StaticOutput {
124 outpoint: *unsafe { Box::from_raw(outpoint.take_ptr()) },
125 output: output.into_rust(),
128 SpendableOutputDescriptor::DynamicOutputP2WSH {mut outpoint, mut per_commitment_point, mut to_self_delay, mut output, mut key_derivation_params, mut revocation_pubkey, } => {
129 let (mut orig_key_derivation_params_0, mut orig_key_derivation_params_1) = key_derivation_params.to_rust(); let mut local_key_derivation_params = (orig_key_derivation_params_0, orig_key_derivation_params_1);
130 nativeSpendableOutputDescriptor::DynamicOutputP2WSH {
131 outpoint: *unsafe { Box::from_raw(outpoint.take_ptr()) },
132 per_commitment_point: per_commitment_point.into_rust(),
133 to_self_delay: to_self_delay,
134 output: output.into_rust(),
135 key_derivation_params: local_key_derivation_params,
136 revocation_pubkey: revocation_pubkey.into_rust(),
139 SpendableOutputDescriptor::StaticOutputCounterpartyPayment {mut outpoint, mut output, mut key_derivation_params, } => {
140 let (mut orig_key_derivation_params_0, mut orig_key_derivation_params_1) = key_derivation_params.to_rust(); let mut local_key_derivation_params = (orig_key_derivation_params_0, orig_key_derivation_params_1);
141 nativeSpendableOutputDescriptor::StaticOutputCounterpartyPayment {
142 outpoint: *unsafe { Box::from_raw(outpoint.take_ptr()) },
143 output: output.into_rust(),
144 key_derivation_params: local_key_derivation_params,
150 pub(crate) fn from_native(native: &nativeSpendableOutputDescriptor) -> Self {
152 nativeSpendableOutputDescriptor::StaticOutput {ref outpoint, ref output, } => {
153 let mut outpoint_nonref = (*outpoint).clone();
154 let mut output_nonref = (*output).clone();
155 SpendableOutputDescriptor::StaticOutput {
156 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint_nonref)), is_owned: true },
157 output: crate::c_types::TxOut::from_rust(output_nonref),
160 nativeSpendableOutputDescriptor::DynamicOutputP2WSH {ref outpoint, ref per_commitment_point, ref to_self_delay, ref output, ref key_derivation_params, ref revocation_pubkey, } => {
161 let mut outpoint_nonref = (*outpoint).clone();
162 let mut per_commitment_point_nonref = (*per_commitment_point).clone();
163 let mut to_self_delay_nonref = (*to_self_delay).clone();
164 let mut output_nonref = (*output).clone();
165 let mut key_derivation_params_nonref = (*key_derivation_params).clone();
166 let (mut orig_key_derivation_params_nonref_0, mut orig_key_derivation_params_nonref_1) = key_derivation_params_nonref; let mut local_key_derivation_params_nonref = (orig_key_derivation_params_nonref_0, orig_key_derivation_params_nonref_1).into();
167 let mut revocation_pubkey_nonref = (*revocation_pubkey).clone();
168 SpendableOutputDescriptor::DynamicOutputP2WSH {
169 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint_nonref)), is_owned: true },
170 per_commitment_point: crate::c_types::PublicKey::from_rust(&per_commitment_point_nonref),
171 to_self_delay: to_self_delay_nonref,
172 output: crate::c_types::TxOut::from_rust(output_nonref),
173 key_derivation_params: local_key_derivation_params_nonref,
174 revocation_pubkey: crate::c_types::PublicKey::from_rust(&revocation_pubkey_nonref),
177 nativeSpendableOutputDescriptor::StaticOutputCounterpartyPayment {ref outpoint, ref output, ref key_derivation_params, } => {
178 let mut outpoint_nonref = (*outpoint).clone();
179 let mut output_nonref = (*output).clone();
180 let mut key_derivation_params_nonref = (*key_derivation_params).clone();
181 let (mut orig_key_derivation_params_nonref_0, mut orig_key_derivation_params_nonref_1) = key_derivation_params_nonref; let mut local_key_derivation_params_nonref = (orig_key_derivation_params_nonref_0, orig_key_derivation_params_nonref_1).into();
182 SpendableOutputDescriptor::StaticOutputCounterpartyPayment {
183 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint_nonref)), is_owned: true },
184 output: crate::c_types::TxOut::from_rust(output_nonref),
185 key_derivation_params: local_key_derivation_params_nonref,
191 pub(crate) fn native_into(native: nativeSpendableOutputDescriptor) -> Self {
193 nativeSpendableOutputDescriptor::StaticOutput {mut outpoint, mut output, } => {
194 SpendableOutputDescriptor::StaticOutput {
195 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint)), is_owned: true },
196 output: crate::c_types::TxOut::from_rust(output),
199 nativeSpendableOutputDescriptor::DynamicOutputP2WSH {mut outpoint, mut per_commitment_point, mut to_self_delay, mut output, mut key_derivation_params, mut revocation_pubkey, } => {
200 let (mut orig_key_derivation_params_0, mut orig_key_derivation_params_1) = key_derivation_params; let mut local_key_derivation_params = (orig_key_derivation_params_0, orig_key_derivation_params_1).into();
201 SpendableOutputDescriptor::DynamicOutputP2WSH {
202 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint)), is_owned: true },
203 per_commitment_point: crate::c_types::PublicKey::from_rust(&per_commitment_point),
204 to_self_delay: to_self_delay,
205 output: crate::c_types::TxOut::from_rust(output),
206 key_derivation_params: local_key_derivation_params,
207 revocation_pubkey: crate::c_types::PublicKey::from_rust(&revocation_pubkey),
210 nativeSpendableOutputDescriptor::StaticOutputCounterpartyPayment {mut outpoint, mut output, mut key_derivation_params, } => {
211 let (mut orig_key_derivation_params_0, mut orig_key_derivation_params_1) = key_derivation_params; let mut local_key_derivation_params = (orig_key_derivation_params_0, orig_key_derivation_params_1).into();
212 SpendableOutputDescriptor::StaticOutputCounterpartyPayment {
213 outpoint: crate::chain::transaction::OutPoint { inner: Box::into_raw(Box::new(outpoint)), is_owned: true },
214 output: crate::c_types::TxOut::from_rust(output),
215 key_derivation_params: local_key_derivation_params,
222 pub extern "C" fn SpendableOutputDescriptor_free(this_ptr: SpendableOutputDescriptor) { }
224 pub extern "C" fn SpendableOutputDescriptor_clone(orig: &SpendableOutputDescriptor) -> SpendableOutputDescriptor {
227 /// Set of lightning keys needed to operate a channel as described in BOLT 3.
229 /// Signing services could be implemented on a hardware wallet. In this case,
230 /// the current ChannelKeys would be a front-end on top of a communication
231 /// channel connected to your secure device and lightning key material wouldn't
232 /// reside on a hot server. Nevertheless, a this deployment would still need
233 /// to trust the ChannelManager to avoid loss of funds as this latest component
234 /// could ask to sign commitment transaction with HTLCs paying to attacker pubkeys.
236 /// A more secure iteration would be to use hashlock (or payment points) to pair
237 /// invoice/incoming HTLCs with outgoing HTLCs to implement a no-trust-ChannelManager
238 /// at the price of more state and computation on the hardware wallet side. In the future,
239 /// we are looking forward to design such interface.
241 /// In any case, ChannelMonitor or fallback watchtowers are always going to be trusted
242 /// to act, as liveness and breach reply correctness are always going to be hard requirements
243 /// of LN security model, orthogonal of key management issues.
245 /// If you're implementing a custom signer, you almost certainly want to implement
246 /// Readable/Writable to serialize out a unique reference to this set of keys so
247 /// that you can serialize the full ChannelManager object.
250 pub struct ChannelKeys {
251 pub this_arg: *mut c_void,
252 /// Gets the per-commitment point for a specific commitment number
254 /// Note that the commitment number starts at (1 << 48) - 1 and counts backwards.
256 pub get_per_commitment_point: extern "C" fn (this_arg: *const c_void, idx: u64) -> crate::c_types::PublicKey,
257 /// Gets the commitment secret for a specific commitment number as part of the revocation process
259 /// An external signer implementation should error here if the commitment was already signed
260 /// and should refuse to sign it in the future.
262 /// May be called more than once for the same index.
264 /// Note that the commitment number starts at (1 << 48) - 1 and counts backwards.
265 /// TODO: return a Result so we can signal a validation error
267 pub release_commitment_secret: extern "C" fn (this_arg: *const c_void, idx: u64) -> crate::c_types::ThirtyTwoBytes,
268 /// Gets the holder's channel public keys and basepoints
269 pub pubkeys: crate::ln::chan_utils::ChannelPublicKeys,
270 /// Fill in the pubkeys field as a reference to it will be given to Rust after this returns
271 /// Note that this takes a pointer to this object, not the this_ptr like other methods do
272 /// This function pointer may be NULL if pubkeys is filled in when this object is created and never needs updating.
273 pub set_pubkeys: Option<extern "C" fn(&ChannelKeys)>,
274 /// Gets arbitrary identifiers describing the set of keys which are provided back to you in
275 /// some SpendableOutputDescriptor types. These should be sufficient to identify this
276 /// ChannelKeys object uniquely and lookup or re-derive its keys.
278 pub key_derivation_params: extern "C" fn (this_arg: *const c_void) -> crate::c_types::derived::C2Tuple_u64u64Z,
279 /// Create a signature for a counterparty's commitment transaction and associated HTLC transactions.
281 /// Note that if signing fails or is rejected, the channel will be force-closed.
283 pub sign_counterparty_commitment: extern "C" fn (this_arg: *const c_void, feerate_per_kw: u32, commitment_tx: crate::c_types::Transaction, keys: &crate::ln::chan_utils::PreCalculatedTxCreationKeys, htlcs: crate::c_types::derived::CVec_HTLCOutputInCommitmentZ) -> crate::c_types::derived::CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ,
284 /// Create a signature for a holder's commitment transaction. This will only ever be called with
285 /// the same holder_commitment_tx (or a copy thereof), though there are currently no guarantees
286 /// that it will not be called multiple times.
287 /// An external signer implementation should check that the commitment has not been revoked.
289 pub sign_holder_commitment: extern "C" fn (this_arg: *const c_void, holder_commitment_tx: &crate::ln::chan_utils::HolderCommitmentTransaction) -> crate::c_types::derived::CResult_SignatureNoneZ,
290 /// Create a signature for each HTLC transaction spending a holder's commitment transaction.
292 /// Unlike sign_holder_commitment, this may be called multiple times with *different*
293 /// holder_commitment_tx values. While this will never be called with a revoked
294 /// holder_commitment_tx, it is possible that it is called with the second-latest
295 /// holder_commitment_tx (only if we haven't yet revoked it) if some watchtower/secondary
296 /// ChannelMonitor decided to broadcast before it had been updated to the latest.
298 /// Either an Err should be returned, or a Vec with one entry for each HTLC which exists in
299 /// holder_commitment_tx. For those HTLCs which have transaction_output_index set to None
300 /// (implying they were considered dust at the time the commitment transaction was negotiated),
301 /// a corresponding None should be included in the return value. All other positions in the
302 /// return value must contain a signature.
304 pub sign_holder_commitment_htlc_transactions: extern "C" fn (this_arg: *const c_void, holder_commitment_tx: &crate::ln::chan_utils::HolderCommitmentTransaction) -> crate::c_types::derived::CResult_CVec_SignatureZNoneZ,
305 /// Create a signature for the given input in a transaction spending an HTLC or commitment
306 /// transaction output when our counterparty broadcasts an old state.
308 /// A justice transaction may claim multiples outputs at the same time if timelocks are
309 /// similar, but only a signature for the input at index `input` should be signed for here.
310 /// It may be called multiples time for same output(s) if a fee-bump is needed with regards
311 /// to an upcoming timelock expiration.
313 /// Amount is value of the output spent by this input, committed to in the BIP 143 signature.
315 /// per_commitment_key is revocation secret which was provided by our counterparty when they
316 /// revoked the state which they eventually broadcast. It's not a _holder_ secret key and does
317 /// not allow the spending of any funds by itself (you need our holder revocation_secret to do
320 /// htlc holds HTLC elements (hash, timelock) if the output being spent is a HTLC output, thus
321 /// changing the format of the witness script (which is committed to in the BIP 143
324 pub sign_justice_transaction: extern "C" fn (this_arg: *const c_void, justice_tx: crate::c_types::Transaction, input: usize, amount: u64, per_commitment_key: *const [u8; 32], htlc: &crate::ln::chan_utils::HTLCOutputInCommitment) -> crate::c_types::derived::CResult_SignatureNoneZ,
325 /// Create a signature for a claiming transaction for a HTLC output on a counterparty's commitment
326 /// transaction, either offered or received.
328 /// Such a transaction may claim multiples offered outputs at same time if we know the
329 /// preimage for each when we create it, but only the input at index `input` should be
330 /// signed for here. It may be called multiple times for same output(s) if a fee-bump is
331 /// needed with regards to an upcoming timelock expiration.
333 /// Witness_script is either a offered or received script as defined in BOLT3 for HTLC
336 /// Amount is value of the output spent by this input, committed to in the BIP 143 signature.
338 /// Per_commitment_point is the dynamic point corresponding to the channel state
339 /// detected onchain. It has been generated by our counterparty and is used to derive
340 /// channel state keys, which are then included in the witness script and committed to in the
341 /// BIP 143 signature.
343 pub sign_counterparty_htlc_transaction: extern "C" fn (this_arg: *const c_void, htlc_tx: crate::c_types::Transaction, input: usize, amount: u64, per_commitment_point: crate::c_types::PublicKey, htlc: &crate::ln::chan_utils::HTLCOutputInCommitment) -> crate::c_types::derived::CResult_SignatureNoneZ,
344 /// Create a signature for a (proposed) closing transaction.
346 /// Note that, due to rounding, there may be one \"missing\" satoshi, and either party may have
347 /// chosen to forgo their output as dust.
349 pub sign_closing_transaction: extern "C" fn (this_arg: *const c_void, closing_tx: crate::c_types::Transaction) -> crate::c_types::derived::CResult_SignatureNoneZ,
350 /// Signs a channel announcement message with our funding key, proving it comes from one
351 /// of the channel participants.
353 /// Note that if this fails or is rejected, the channel will not be publicly announced and
354 /// our counterparty may (though likely will not) close the channel on us for violating the
357 pub sign_channel_announcement: extern "C" fn (this_arg: *const c_void, msg: &crate::ln::msgs::UnsignedChannelAnnouncement) -> crate::c_types::derived::CResult_SignatureNoneZ,
358 /// Set the counterparty channel basepoints and counterparty_selected/holder_selected_contest_delay.
359 /// This is done immediately on incoming channels and as soon as the channel is accepted on outgoing channels.
361 /// We bind holder_selected_contest_delay late here for API convenience.
363 /// Will be called before any signatures are applied.
364 pub on_accept: extern "C" fn (this_arg: *mut c_void, channel_points: &crate::ln::chan_utils::ChannelPublicKeys, counterparty_selected_contest_delay: u16, holder_selected_contest_delay: u16),
365 pub clone: Option<extern "C" fn (this_arg: *const c_void) -> *mut c_void>,
366 pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
368 unsafe impl Send for ChannelKeys {}
370 pub extern "C" fn ChannelKeys_clone(orig: &ChannelKeys) -> ChannelKeys {
372 this_arg: if let Some(f) = orig.clone { (f)(orig.this_arg) } else { orig.this_arg },
373 get_per_commitment_point: orig.get_per_commitment_point.clone(),
374 release_commitment_secret: orig.release_commitment_secret.clone(),
375 pubkeys: orig.pubkeys.clone(),
376 set_pubkeys: orig.set_pubkeys.clone(),
377 key_derivation_params: orig.key_derivation_params.clone(),
378 sign_counterparty_commitment: orig.sign_counterparty_commitment.clone(),
379 sign_holder_commitment: orig.sign_holder_commitment.clone(),
380 sign_holder_commitment_htlc_transactions: orig.sign_holder_commitment_htlc_transactions.clone(),
381 sign_justice_transaction: orig.sign_justice_transaction.clone(),
382 sign_counterparty_htlc_transaction: orig.sign_counterparty_htlc_transaction.clone(),
383 sign_closing_transaction: orig.sign_closing_transaction.clone(),
384 sign_channel_announcement: orig.sign_channel_announcement.clone(),
385 on_accept: orig.on_accept.clone(),
386 clone: orig.clone.clone(),
387 free: orig.free.clone(),
390 impl Clone for ChannelKeys {
391 fn clone(&self) -> Self {
392 ChannelKeys_clone(self)
396 use lightning::chain::keysinterface::ChannelKeys as rustChannelKeys;
397 impl rustChannelKeys for ChannelKeys {
398 fn get_per_commitment_point<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, idx: u64, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> bitcoin::secp256k1::key::PublicKey {
399 let mut ret = (self.get_per_commitment_point)(self.this_arg, idx);
402 fn release_commitment_secret(&self, idx: u64) -> [u8; 32] {
403 let mut ret = (self.release_commitment_secret)(self.this_arg, idx);
406 fn pubkeys(&self) -> &lightning::ln::chan_utils::ChannelPublicKeys {
407 if let Some(f) = self.set_pubkeys {
410 unsafe { &*self.pubkeys.inner }
412 fn key_derivation_params(&self) -> (u64, u64) {
413 let mut ret = (self.key_derivation_params)(self.this_arg);
414 let (mut orig_ret_0, mut orig_ret_1) = ret.to_rust(); let mut local_ret = (orig_ret_0, orig_ret_1);
417 fn sign_counterparty_commitment<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, feerate_per_kw: u32, commitment_tx: &bitcoin::blockdata::transaction::Transaction, keys: &lightning::ln::chan_utils::PreCalculatedTxCreationKeys, htlcs: &[&lightning::ln::chan_utils::HTLCOutputInCommitment], _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<(bitcoin::secp256k1::Signature, Vec<bitcoin::secp256k1::Signature>), ()> {
418 let mut local_commitment_tx = ::bitcoin::consensus::encode::serialize(commitment_tx);
419 let mut local_htlcs = Vec::new(); for item in htlcs.iter() { local_htlcs.push( { crate::ln::chan_utils::HTLCOutputInCommitment { inner: unsafe { ( (&(**item) as *const _) as *mut _) }, is_owned: false } }); };
420 let mut ret = (self.sign_counterparty_commitment)(self.this_arg, feerate_per_kw, crate::c_types::Transaction::from_vec(local_commitment_tx), &crate::ln::chan_utils::PreCalculatedTxCreationKeys { inner: unsafe { (keys as *const _) as *mut _ }, is_owned: false }, local_htlcs.into());
421 let mut local_ret = match ret.result_ok { true => Ok( { let (mut orig_ret_0_0, mut orig_ret_0_1) = (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).to_rust(); let mut local_orig_ret_0_1 = Vec::new(); for mut item in orig_ret_0_1.into_rust().drain(..) { local_orig_ret_0_1.push( { item.into_rust() }); }; let mut local_ret_0 = (orig_ret_0_0.into_rust(), local_orig_ret_0_1); local_ret_0 }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
424 fn sign_holder_commitment<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, holder_commitment_tx: &lightning::ln::chan_utils::HolderCommitmentTransaction, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<bitcoin::secp256k1::Signature, ()> {
425 let mut ret = (self.sign_holder_commitment)(self.this_arg, &crate::ln::chan_utils::HolderCommitmentTransaction { inner: unsafe { (holder_commitment_tx as *const _) as *mut _ }, is_owned: false });
426 let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust() }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
429 fn sign_holder_commitment_htlc_transactions<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, holder_commitment_tx: &lightning::ln::chan_utils::HolderCommitmentTransaction, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<Vec<Option<bitcoin::secp256k1::Signature>>, ()> {
430 let mut ret = (self.sign_holder_commitment_htlc_transactions)(self.this_arg, &crate::ln::chan_utils::HolderCommitmentTransaction { inner: unsafe { (holder_commitment_tx as *const _) as *mut _ }, is_owned: false });
431 let mut local_ret = match ret.result_ok { true => Ok( { let mut local_ret_0 = Vec::new(); for mut item in (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust().drain(..) { local_ret_0.push( { let mut local_ret_0_0 = if item.is_null() { None } else { Some( { item.into_rust() }) }; local_ret_0_0 }); }; local_ret_0 }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
434 fn sign_justice_transaction<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, justice_tx: &bitcoin::blockdata::transaction::Transaction, input: usize, amount: u64, per_commitment_key: &bitcoin::secp256k1::key::SecretKey, htlc: &Option<lightning::ln::chan_utils::HTLCOutputInCommitment>, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<bitcoin::secp256k1::Signature, ()> {
435 let mut local_justice_tx = ::bitcoin::consensus::encode::serialize(justice_tx);
436 let mut local_htlc = &crate::ln::chan_utils::HTLCOutputInCommitment { inner: unsafe { (if htlc.is_none() { std::ptr::null() } else { { (htlc.as_ref().unwrap()) } } as *const _) as *mut _ }, is_owned: false };
437 let mut ret = (self.sign_justice_transaction)(self.this_arg, crate::c_types::Transaction::from_vec(local_justice_tx), input, amount, per_commitment_key.as_ref(), local_htlc);
438 let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust() }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
441 fn sign_counterparty_htlc_transaction<T:bitcoin::secp256k1::Signing + bitcoin::secp256k1::Verification>(&self, htlc_tx: &bitcoin::blockdata::transaction::Transaction, input: usize, amount: u64, per_commitment_point: &bitcoin::secp256k1::key::PublicKey, htlc: &lightning::ln::chan_utils::HTLCOutputInCommitment, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<bitcoin::secp256k1::Signature, ()> {
442 let mut local_htlc_tx = ::bitcoin::consensus::encode::serialize(htlc_tx);
443 let mut ret = (self.sign_counterparty_htlc_transaction)(self.this_arg, crate::c_types::Transaction::from_vec(local_htlc_tx), input, amount, crate::c_types::PublicKey::from_rust(&per_commitment_point), &crate::ln::chan_utils::HTLCOutputInCommitment { inner: unsafe { (htlc as *const _) as *mut _ }, is_owned: false });
444 let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust() }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
447 fn sign_closing_transaction<T:bitcoin::secp256k1::Signing>(&self, closing_tx: &bitcoin::blockdata::transaction::Transaction, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<bitcoin::secp256k1::Signature, ()> {
448 let mut local_closing_tx = ::bitcoin::consensus::encode::serialize(closing_tx);
449 let mut ret = (self.sign_closing_transaction)(self.this_arg, crate::c_types::Transaction::from_vec(local_closing_tx));
450 let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust() }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
453 fn sign_channel_announcement<T:bitcoin::secp256k1::Signing>(&self, msg: &lightning::ln::msgs::UnsignedChannelAnnouncement, _secp_ctx: &bitcoin::secp256k1::Secp256k1<T>) -> Result<bitcoin::secp256k1::Signature, ()> {
454 let mut ret = (self.sign_channel_announcement)(self.this_arg, &crate::ln::msgs::UnsignedChannelAnnouncement { inner: unsafe { (msg as *const _) as *mut _ }, is_owned: false });
455 let mut local_ret = match ret.result_ok { true => Ok( { (*unsafe { Box::from_raw(ret.contents.result.take_ptr()) }).into_rust() }), false => Err( { () /*(*unsafe { Box::from_raw(ret.contents.err.take_ptr()) })*/ })};
458 fn on_accept(&mut self, channel_points: &lightning::ln::chan_utils::ChannelPublicKeys, counterparty_selected_contest_delay: u16, holder_selected_contest_delay: u16) {
459 (self.on_accept)(self.this_arg, &crate::ln::chan_utils::ChannelPublicKeys { inner: unsafe { (channel_points as *const _) as *mut _ }, is_owned: false }, counterparty_selected_contest_delay, holder_selected_contest_delay)
463 // We're essentially a pointer already, or at least a set of pointers, so allow us to be used
464 // directly as a Deref trait in higher-level structs:
465 impl std::ops::Deref for ChannelKeys {
467 fn deref(&self) -> &Self {
471 /// Calls the free function if one is set
473 pub extern "C" fn ChannelKeys_free(this_ptr: ChannelKeys) { }
474 impl Drop for ChannelKeys {
476 if let Some(f) = self.free {
481 /// A trait to describe an object which can get user secrets and key material.
483 pub struct KeysInterface {
484 pub this_arg: *mut c_void,
485 /// Get node secret key (aka node_id or network_key)
487 pub get_node_secret: extern "C" fn (this_arg: *const c_void) -> crate::c_types::SecretKey,
488 /// Get destination redeemScript to encumber static protocol exit points.
490 pub get_destination_script: extern "C" fn (this_arg: *const c_void) -> crate::c_types::derived::CVec_u8Z,
491 /// Get shutdown_pubkey to use as PublicKey at channel closure
493 pub get_shutdown_pubkey: extern "C" fn (this_arg: *const c_void) -> crate::c_types::PublicKey,
494 /// Get a new set of ChannelKeys for per-channel secrets. These MUST be unique even if you
495 /// restarted with some stale data!
497 pub get_channel_keys: extern "C" fn (this_arg: *const c_void, inbound: bool, channel_value_satoshis: u64) -> crate::chain::keysinterface::ChannelKeys,
498 /// Gets a unique, cryptographically-secure, random 32 byte value. This is used for encrypting
499 /// onion packets and for temporary channel IDs. There is no requirement that these be
500 /// persisted anywhere, though they must be unique across restarts.
502 pub get_secure_random_bytes: extern "C" fn (this_arg: *const c_void) -> crate::c_types::ThirtyTwoBytes,
503 pub free: Option<extern "C" fn(this_arg: *mut c_void)>,
505 unsafe impl Send for KeysInterface {}
506 unsafe impl Sync for KeysInterface {}
508 use lightning::chain::keysinterface::KeysInterface as rustKeysInterface;
509 impl rustKeysInterface for KeysInterface {
510 type ChanKeySigner = crate::chain::keysinterface::ChannelKeys;
511 fn get_node_secret(&self) -> bitcoin::secp256k1::key::SecretKey {
512 let mut ret = (self.get_node_secret)(self.this_arg);
515 fn get_destination_script(&self) -> bitcoin::blockdata::script::Script {
516 let mut ret = (self.get_destination_script)(self.this_arg);
517 ::bitcoin::blockdata::script::Script::from(ret.into_rust())
519 fn get_shutdown_pubkey(&self) -> bitcoin::secp256k1::key::PublicKey {
520 let mut ret = (self.get_shutdown_pubkey)(self.this_arg);
523 fn get_channel_keys(&self, inbound: bool, channel_value_satoshis: u64) -> Self::ChanKeySigner {
524 let mut ret = (self.get_channel_keys)(self.this_arg, inbound, channel_value_satoshis);
527 fn get_secure_random_bytes(&self) -> [u8; 32] {
528 let mut ret = (self.get_secure_random_bytes)(self.this_arg);
533 // We're essentially a pointer already, or at least a set of pointers, so allow us to be used
534 // directly as a Deref trait in higher-level structs:
535 impl std::ops::Deref for KeysInterface {
537 fn deref(&self) -> &Self {
541 /// Calls the free function if one is set
543 pub extern "C" fn KeysInterface_free(this_ptr: KeysInterface) { }
544 impl Drop for KeysInterface {
546 if let Some(f) = self.free {
552 use lightning::chain::keysinterface::InMemoryChannelKeys as nativeInMemoryChannelKeysImport;
553 type nativeInMemoryChannelKeys = nativeInMemoryChannelKeysImport;
555 /// A simple implementation of ChannelKeys that just keeps the private keys in memory.
558 pub struct InMemoryChannelKeys {
559 /// Nearly everywhere, inner must be non-null, however in places where
560 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
561 pub inner: *mut nativeInMemoryChannelKeys,
565 impl Drop for InMemoryChannelKeys {
567 if self.is_owned && !self.inner.is_null() {
568 let _ = unsafe { Box::from_raw(self.inner) };
573 pub extern "C" fn InMemoryChannelKeys_free(this_ptr: InMemoryChannelKeys) { }
575 /// Used only if an object of this type is returned as a trait impl by a method
576 extern "C" fn InMemoryChannelKeys_free_void(this_ptr: *mut c_void) {
577 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeInMemoryChannelKeys); }
580 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
581 impl InMemoryChannelKeys {
582 pub(crate) fn take_ptr(mut self) -> *mut nativeInMemoryChannelKeys {
583 assert!(self.is_owned);
584 let ret = self.inner;
585 self.inner = std::ptr::null_mut();
589 impl Clone for InMemoryChannelKeys {
590 fn clone(&self) -> Self {
592 inner: Box::into_raw(Box::new(unsafe { &*self.inner }.clone())),
598 /// Used only if an object of this type is returned as a trait impl by a method
599 pub(crate) extern "C" fn InMemoryChannelKeys_clone_void(this_ptr: *const c_void) -> *mut c_void {
600 Box::into_raw(Box::new(unsafe { (*(this_ptr as *mut nativeInMemoryChannelKeys)).clone() })) as *mut c_void
603 pub extern "C" fn InMemoryChannelKeys_clone(orig: &InMemoryChannelKeys) -> InMemoryChannelKeys {
604 InMemoryChannelKeys { inner: Box::into_raw(Box::new(unsafe { &*orig.inner }.clone())), is_owned: true }
606 /// Private key of anchor tx
608 pub extern "C" fn InMemoryChannelKeys_get_funding_key(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
609 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.funding_key;
610 (*inner_val).as_ref()
612 /// Private key of anchor tx
614 pub extern "C" fn InMemoryChannelKeys_set_funding_key(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::SecretKey) {
615 unsafe { &mut *this_ptr.inner }.funding_key = val.into_rust();
617 /// Holder secret key for blinded revocation pubkey
619 pub extern "C" fn InMemoryChannelKeys_get_revocation_base_key(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
620 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.revocation_base_key;
621 (*inner_val).as_ref()
623 /// Holder secret key for blinded revocation pubkey
625 pub extern "C" fn InMemoryChannelKeys_set_revocation_base_key(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::SecretKey) {
626 unsafe { &mut *this_ptr.inner }.revocation_base_key = val.into_rust();
628 /// Holder secret key used for our balance in counterparty-broadcasted commitment transactions
630 pub extern "C" fn InMemoryChannelKeys_get_payment_key(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
631 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.payment_key;
632 (*inner_val).as_ref()
634 /// Holder secret key used for our balance in counterparty-broadcasted commitment transactions
636 pub extern "C" fn InMemoryChannelKeys_set_payment_key(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::SecretKey) {
637 unsafe { &mut *this_ptr.inner }.payment_key = val.into_rust();
639 /// Holder secret key used in HTLC tx
641 pub extern "C" fn InMemoryChannelKeys_get_delayed_payment_base_key(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
642 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.delayed_payment_base_key;
643 (*inner_val).as_ref()
645 /// Holder secret key used in HTLC tx
647 pub extern "C" fn InMemoryChannelKeys_set_delayed_payment_base_key(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::SecretKey) {
648 unsafe { &mut *this_ptr.inner }.delayed_payment_base_key = val.into_rust();
650 /// Holder htlc secret key used in commitment tx htlc outputs
652 pub extern "C" fn InMemoryChannelKeys_get_htlc_base_key(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
653 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.htlc_base_key;
654 (*inner_val).as_ref()
656 /// Holder htlc secret key used in commitment tx htlc outputs
658 pub extern "C" fn InMemoryChannelKeys_set_htlc_base_key(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::SecretKey) {
659 unsafe { &mut *this_ptr.inner }.htlc_base_key = val.into_rust();
663 pub extern "C" fn InMemoryChannelKeys_get_commitment_seed(this_ptr: &InMemoryChannelKeys) -> *const [u8; 32] {
664 let mut inner_val = &mut unsafe { &mut *this_ptr.inner }.commitment_seed;
669 pub extern "C" fn InMemoryChannelKeys_set_commitment_seed(this_ptr: &mut InMemoryChannelKeys, mut val: crate::c_types::ThirtyTwoBytes) {
670 unsafe { &mut *this_ptr.inner }.commitment_seed = val.data;
672 /// Create a new InMemoryChannelKeys
675 pub extern "C" fn InMemoryChannelKeys_new(mut funding_key: crate::c_types::SecretKey, mut revocation_base_key: crate::c_types::SecretKey, mut payment_key: crate::c_types::SecretKey, mut delayed_payment_base_key: crate::c_types::SecretKey, mut htlc_base_key: crate::c_types::SecretKey, mut commitment_seed: crate::c_types::ThirtyTwoBytes, mut channel_value_satoshis: u64, mut key_derivation_params: crate::c_types::derived::C2Tuple_u64u64Z) -> crate::chain::keysinterface::InMemoryChannelKeys {
676 let (mut orig_key_derivation_params_0, mut orig_key_derivation_params_1) = key_derivation_params.to_rust(); let mut local_key_derivation_params = (orig_key_derivation_params_0, orig_key_derivation_params_1);
677 let mut ret = lightning::chain::keysinterface::InMemoryChannelKeys::new(&bitcoin::secp256k1::Secp256k1::new(), funding_key.into_rust(), revocation_base_key.into_rust(), payment_key.into_rust(), delayed_payment_base_key.into_rust(), htlc_base_key.into_rust(), commitment_seed.data, channel_value_satoshis, local_key_derivation_params);
678 crate::chain::keysinterface::InMemoryChannelKeys { inner: Box::into_raw(Box::new(ret)), is_owned: true }
681 /// Counterparty pubkeys.
682 /// Will panic if on_accept wasn't called.
685 pub extern "C" fn InMemoryChannelKeys_counterparty_pubkeys(this_arg: &InMemoryChannelKeys) -> crate::ln::chan_utils::ChannelPublicKeys {
686 let mut ret = unsafe { &*this_arg.inner }.counterparty_pubkeys();
687 crate::ln::chan_utils::ChannelPublicKeys { inner: unsafe { ( (&(*ret) as *const _) as *mut _) }, is_owned: false }
690 /// The contest_delay value specified by our counterparty and applied on holder-broadcastable
691 /// transactions, ie the amount of time that we have to wait to recover our funds if we
692 /// broadcast a transaction. You'll likely want to pass this to the
693 /// ln::chan_utils::build*_transaction functions when signing holder's transactions.
694 /// Will panic if on_accept wasn't called.
697 pub extern "C" fn InMemoryChannelKeys_counterparty_selected_contest_delay(this_arg: &InMemoryChannelKeys) -> u16 {
698 let mut ret = unsafe { &*this_arg.inner }.counterparty_selected_contest_delay();
702 /// The contest_delay value specified by us and applied on transactions broadcastable
703 /// by our counterparty, ie the amount of time that they have to wait to recover their funds
704 /// if they broadcast a transaction.
705 /// Will panic if on_accept wasn't called.
708 pub extern "C" fn InMemoryChannelKeys_holder_selected_contest_delay(this_arg: &InMemoryChannelKeys) -> u16 {
709 let mut ret = unsafe { &*this_arg.inner }.holder_selected_contest_delay();
714 pub extern "C" fn InMemoryChannelKeys_as_ChannelKeys(this_arg: *const InMemoryChannelKeys) -> crate::chain::keysinterface::ChannelKeys {
715 crate::chain::keysinterface::ChannelKeys {
716 this_arg: unsafe { (*this_arg).inner as *mut c_void },
718 get_per_commitment_point: InMemoryChannelKeys_ChannelKeys_get_per_commitment_point,
719 release_commitment_secret: InMemoryChannelKeys_ChannelKeys_release_commitment_secret,
721 pubkeys: crate::ln::chan_utils::ChannelPublicKeys { inner: std::ptr::null_mut(), is_owned: true },
722 set_pubkeys: Some(InMemoryChannelKeys_ChannelKeys_set_pubkeys),
723 key_derivation_params: InMemoryChannelKeys_ChannelKeys_key_derivation_params,
724 sign_counterparty_commitment: InMemoryChannelKeys_ChannelKeys_sign_counterparty_commitment,
725 sign_holder_commitment: InMemoryChannelKeys_ChannelKeys_sign_holder_commitment,
726 sign_holder_commitment_htlc_transactions: InMemoryChannelKeys_ChannelKeys_sign_holder_commitment_htlc_transactions,
727 sign_justice_transaction: InMemoryChannelKeys_ChannelKeys_sign_justice_transaction,
728 sign_counterparty_htlc_transaction: InMemoryChannelKeys_ChannelKeys_sign_counterparty_htlc_transaction,
729 sign_closing_transaction: InMemoryChannelKeys_ChannelKeys_sign_closing_transaction,
730 sign_channel_announcement: InMemoryChannelKeys_ChannelKeys_sign_channel_announcement,
731 on_accept: InMemoryChannelKeys_ChannelKeys_on_accept,
732 clone: Some(InMemoryChannelKeys_clone_void),
735 use lightning::chain::keysinterface::ChannelKeys as ChannelKeysTraitImport;
737 extern "C" fn InMemoryChannelKeys_ChannelKeys_get_per_commitment_point(this_arg: *const c_void, mut idx: u64) -> crate::c_types::PublicKey {
738 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.get_per_commitment_point(idx, &bitcoin::secp256k1::Secp256k1::new());
739 crate::c_types::PublicKey::from_rust(&ret)
742 extern "C" fn InMemoryChannelKeys_ChannelKeys_release_commitment_secret(this_arg: *const c_void, mut idx: u64) -> crate::c_types::ThirtyTwoBytes {
743 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.release_commitment_secret(idx);
744 crate::c_types::ThirtyTwoBytes { data: ret }
747 extern "C" fn InMemoryChannelKeys_ChannelKeys_pubkeys(this_arg: *const c_void) -> crate::ln::chan_utils::ChannelPublicKeys {
748 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.pubkeys();
749 crate::ln::chan_utils::ChannelPublicKeys { inner: unsafe { ( (&(*ret) as *const _) as *mut _) }, is_owned: false }
751 extern "C" fn InMemoryChannelKeys_ChannelKeys_set_pubkeys(trait_self_arg: &ChannelKeys) {
752 // This is a bit race-y in the general case, but for our specific use-cases today, we're safe
753 // Specifically, we must ensure that the first time we're called it can never be in parallel
754 if trait_self_arg.pubkeys.inner.is_null() {
755 unsafe { &mut *(trait_self_arg as *const ChannelKeys as *mut ChannelKeys) }.pubkeys = InMemoryChannelKeys_ChannelKeys_pubkeys(trait_self_arg.this_arg);
759 extern "C" fn InMemoryChannelKeys_ChannelKeys_key_derivation_params(this_arg: *const c_void) -> crate::c_types::derived::C2Tuple_u64u64Z {
760 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.key_derivation_params();
761 let (mut orig_ret_0, mut orig_ret_1) = ret; let mut local_ret = (orig_ret_0, orig_ret_1).into();
765 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_counterparty_commitment(this_arg: *const c_void, mut feerate_per_kw: u32, mut commitment_tx: crate::c_types::Transaction, pre_keys: &crate::ln::chan_utils::PreCalculatedTxCreationKeys, mut htlcs: crate::c_types::derived::CVec_HTLCOutputInCommitmentZ) -> crate::c_types::derived::CResult_C2Tuple_SignatureCVec_SignatureZZNoneZ {
766 let mut local_htlcs = Vec::new(); for mut item in htlcs.as_slice().iter() { local_htlcs.push( { unsafe { &*item.inner } }); };
767 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_counterparty_commitment(feerate_per_kw, &commitment_tx.into_bitcoin(), unsafe { &*pre_keys.inner }, &local_htlcs[..], &bitcoin::secp256k1::Secp256k1::new());
768 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { let (mut orig_ret_0_0, mut orig_ret_0_1) = o; let mut local_orig_ret_0_1 = Vec::new(); for item in orig_ret_0_1.drain(..) { local_orig_ret_0_1.push( { crate::c_types::Signature::from_rust(&item) }); }; let mut local_ret_0 = (crate::c_types::Signature::from_rust(&orig_ret_0_0), local_orig_ret_0_1.into()).into(); local_ret_0 }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
772 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_holder_commitment(this_arg: *const c_void, holder_commitment_tx: &crate::ln::chan_utils::HolderCommitmentTransaction) -> crate::c_types::derived::CResult_SignatureNoneZ {
773 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_holder_commitment(unsafe { &*holder_commitment_tx.inner }, &bitcoin::secp256k1::Secp256k1::new());
774 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::Signature::from_rust(&o) }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
778 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_holder_commitment_htlc_transactions(this_arg: *const c_void, holder_commitment_tx: &crate::ln::chan_utils::HolderCommitmentTransaction) -> crate::c_types::derived::CResult_CVec_SignatureZNoneZ {
779 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_holder_commitment_htlc_transactions(unsafe { &*holder_commitment_tx.inner }, &bitcoin::secp256k1::Secp256k1::new());
780 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { let mut local_ret_0 = Vec::new(); for item in o.drain(..) { local_ret_0.push( { let mut local_ret_0_0 = if item.is_none() { crate::c_types::Signature::null() } else { { crate::c_types::Signature::from_rust(&(item.unwrap())) } }; local_ret_0_0 }); }; local_ret_0.into() }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
784 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_justice_transaction(this_arg: *const c_void, mut justice_tx: crate::c_types::Transaction, mut input: usize, mut amount: u64, per_commitment_key: *const [u8; 32], htlc: &crate::ln::chan_utils::HTLCOutputInCommitment) -> crate::c_types::derived::CResult_SignatureNoneZ {
785 let mut local_htlc = if htlc.inner.is_null() { None } else { Some((* { unsafe { &*htlc.inner } }).clone()) };
786 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_justice_transaction(&justice_tx.into_bitcoin(), input, amount, &::bitcoin::secp256k1::key::SecretKey::from_slice(&unsafe { *per_commitment_key}[..]).unwrap(), &local_htlc, &bitcoin::secp256k1::Secp256k1::new());
787 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::Signature::from_rust(&o) }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
791 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_counterparty_htlc_transaction(this_arg: *const c_void, mut htlc_tx: crate::c_types::Transaction, mut input: usize, mut amount: u64, mut per_commitment_point: crate::c_types::PublicKey, htlc: &crate::ln::chan_utils::HTLCOutputInCommitment) -> crate::c_types::derived::CResult_SignatureNoneZ {
792 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_counterparty_htlc_transaction(&htlc_tx.into_bitcoin(), input, amount, &per_commitment_point.into_rust(), unsafe { &*htlc.inner }, &bitcoin::secp256k1::Secp256k1::new());
793 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::Signature::from_rust(&o) }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
797 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_closing_transaction(this_arg: *const c_void, mut closing_tx: crate::c_types::Transaction) -> crate::c_types::derived::CResult_SignatureNoneZ {
798 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_closing_transaction(&closing_tx.into_bitcoin(), &bitcoin::secp256k1::Secp256k1::new());
799 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::Signature::from_rust(&o) }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
803 extern "C" fn InMemoryChannelKeys_ChannelKeys_sign_channel_announcement(this_arg: *const c_void, msg: &crate::ln::msgs::UnsignedChannelAnnouncement) -> crate::c_types::derived::CResult_SignatureNoneZ {
804 let mut ret = unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.sign_channel_announcement(unsafe { &*msg.inner }, &bitcoin::secp256k1::Secp256k1::new());
805 let mut local_ret = match ret { Ok(mut o) => crate::c_types::CResultTempl::ok( { crate::c_types::Signature::from_rust(&o) }), Err(mut e) => crate::c_types::CResultTempl::err( { 0u8 /*e*/ }) };
808 extern "C" fn InMemoryChannelKeys_ChannelKeys_on_accept(this_arg: *mut c_void, channel_pubkeys: &crate::ln::chan_utils::ChannelPublicKeys, mut counterparty_selected_contest_delay: u16, mut holder_selected_contest_delay: u16) {
809 unsafe { &mut *(this_arg as *mut nativeInMemoryChannelKeys) }.on_accept(unsafe { &*channel_pubkeys.inner }, counterparty_selected_contest_delay, holder_selected_contest_delay)
813 pub extern "C" fn InMemoryChannelKeys_write(obj: *const InMemoryChannelKeys) -> crate::c_types::derived::CVec_u8Z {
814 crate::c_types::serialize_obj(unsafe { &(*(*obj).inner) })
817 pub extern "C" fn InMemoryChannelKeys_read(ser: crate::c_types::u8slice) -> InMemoryChannelKeys {
818 if let Ok(res) = crate::c_types::deserialize_obj(ser) {
819 InMemoryChannelKeys { inner: Box::into_raw(Box::new(res)), is_owned: true }
821 InMemoryChannelKeys { inner: std::ptr::null_mut(), is_owned: true }
825 use lightning::chain::keysinterface::KeysManager as nativeKeysManagerImport;
826 type nativeKeysManager = nativeKeysManagerImport;
828 /// Simple KeysInterface implementor that takes a 32-byte seed for use as a BIP 32 extended key
829 /// and derives keys from that.
831 /// Your node_id is seed/0'
832 /// ChannelMonitor closes may use seed/1'
833 /// Cooperative closes may use seed/2'
834 /// The two close keys may be needed to claim on-chain funds!
837 pub struct KeysManager {
838 /// Nearly everywhere, inner must be non-null, however in places where
839 /// the Rust equivalent takes an Option, it may be set to null to indicate None.
840 pub inner: *mut nativeKeysManager,
844 impl Drop for KeysManager {
846 if self.is_owned && !self.inner.is_null() {
847 let _ = unsafe { Box::from_raw(self.inner) };
852 pub extern "C" fn KeysManager_free(this_ptr: KeysManager) { }
854 /// Used only if an object of this type is returned as a trait impl by a method
855 extern "C" fn KeysManager_free_void(this_ptr: *mut c_void) {
856 unsafe { let _ = Box::from_raw(this_ptr as *mut nativeKeysManager); }
859 /// When moving out of the pointer, we have to ensure we aren't a reference, this makes that easy
861 pub(crate) fn take_ptr(mut self) -> *mut nativeKeysManager {
862 assert!(self.is_owned);
863 let ret = self.inner;
864 self.inner = std::ptr::null_mut();
868 /// Constructs a KeysManager from a 32-byte seed. If the seed is in some way biased (eg your
869 /// CSRNG is busted) this may panic (but more importantly, you will possibly lose funds).
870 /// starting_time isn't strictly required to actually be a time, but it must absolutely,
871 /// without a doubt, be unique to this instance. ie if you start multiple times with the same
872 /// seed, starting_time must be unique to each run. Thus, the easiest way to achieve this is to
873 /// simply use the current time (with very high precision).
875 /// The seed MUST be backed up safely prior to use so that the keys can be re-created, however,
876 /// obviously, starting_time should be unique every time you reload the library - it is only
877 /// used to generate new ephemeral key data (which will be stored by the individual channel if
880 /// Note that the seed is required to recover certain on-chain funds independent of
881 /// ChannelMonitor data, though a current copy of ChannelMonitor data is also required for any
882 /// channel, and some on-chain during-closing funds.
884 /// Note that until the 0.1 release there is no guarantee of backward compatibility between
885 /// versions. Once the library is more fully supported, the docs will be updated to include a
886 /// detailed description of the guarantee.
889 pub extern "C" fn KeysManager_new(seed: *const [u8; 32], mut network: crate::bitcoin::network::Network, mut starting_time_secs: u64, mut starting_time_nanos: u32) -> KeysManager {
890 let mut ret = lightning::chain::keysinterface::KeysManager::new(unsafe { &*seed}, network.into_bitcoin(), starting_time_secs, starting_time_nanos);
891 KeysManager { inner: Box::into_raw(Box::new(ret)), is_owned: true }
894 /// Derive an old set of ChannelKeys for per-channel secrets based on a key derivation
896 /// Key derivation parameters are accessible through a per-channel secrets
897 /// ChannelKeys::key_derivation_params and is provided inside DynamicOuputP2WSH in case of
898 /// onchain output detection for which a corresponding delayed_payment_key must be derived.
901 pub extern "C" fn KeysManager_derive_channel_keys(this_arg: &KeysManager, mut channel_value_satoshis: u64, mut params_1: u64, mut params_2: u64) -> crate::chain::keysinterface::InMemoryChannelKeys {
902 let mut ret = unsafe { &*this_arg.inner }.derive_channel_keys(channel_value_satoshis, params_1, params_2);
903 crate::chain::keysinterface::InMemoryChannelKeys { inner: Box::into_raw(Box::new(ret)), is_owned: true }
907 pub extern "C" fn KeysManager_as_KeysInterface(this_arg: *const KeysManager) -> crate::chain::keysinterface::KeysInterface {
908 crate::chain::keysinterface::KeysInterface {
909 this_arg: unsafe { (*this_arg).inner as *mut c_void },
911 get_node_secret: KeysManager_KeysInterface_get_node_secret,
912 get_destination_script: KeysManager_KeysInterface_get_destination_script,
913 get_shutdown_pubkey: KeysManager_KeysInterface_get_shutdown_pubkey,
914 get_channel_keys: KeysManager_KeysInterface_get_channel_keys,
915 get_secure_random_bytes: KeysManager_KeysInterface_get_secure_random_bytes,
918 use lightning::chain::keysinterface::KeysInterface as KeysInterfaceTraitImport;
920 extern "C" fn KeysManager_KeysInterface_get_node_secret(this_arg: *const c_void) -> crate::c_types::SecretKey {
921 let mut ret = unsafe { &mut *(this_arg as *mut nativeKeysManager) }.get_node_secret();
922 crate::c_types::SecretKey::from_rust(ret)
925 extern "C" fn KeysManager_KeysInterface_get_destination_script(this_arg: *const c_void) -> crate::c_types::derived::CVec_u8Z {
926 let mut ret = unsafe { &mut *(this_arg as *mut nativeKeysManager) }.get_destination_script();
927 ret.into_bytes().into()
930 extern "C" fn KeysManager_KeysInterface_get_shutdown_pubkey(this_arg: *const c_void) -> crate::c_types::PublicKey {
931 let mut ret = unsafe { &mut *(this_arg as *mut nativeKeysManager) }.get_shutdown_pubkey();
932 crate::c_types::PublicKey::from_rust(&ret)
935 extern "C" fn KeysManager_KeysInterface_get_channel_keys(this_arg: *const c_void, mut _inbound: bool, mut channel_value_satoshis: u64) -> crate::chain::keysinterface::ChannelKeys {
936 let mut ret = unsafe { &mut *(this_arg as *mut nativeKeysManager) }.get_channel_keys(_inbound, channel_value_satoshis);
937 let mut rust_obj = InMemoryChannelKeys { inner: Box::into_raw(Box::new(ret)), is_owned: true };
938 let mut ret = InMemoryChannelKeys_as_ChannelKeys(&rust_obj);
939 // We want to free rust_obj when ret gets drop()'d, not rust_obj, so wipe rust_obj's pointer and set ret's free() fn
940 rust_obj.inner = std::ptr::null_mut();
941 ret.free = Some(InMemoryChannelKeys_free_void);
946 extern "C" fn KeysManager_KeysInterface_get_secure_random_bytes(this_arg: *const c_void) -> crate::c_types::ThirtyTwoBytes {
947 let mut ret = unsafe { &mut *(this_arg as *mut nativeKeysManager) }.get_secure_random_bytes();
948 crate::c_types::ThirtyTwoBytes { data: ret }