use bitcoin::blockdata::opcodes::all::OP_PUSHBYTES_0 as SEGWIT_V0;
use bitcoin::blockdata::script::{Builder, Script};
use bitcoin::hashes::Hash;
-use bitcoin::hash_types::{PubkeyHash, ScriptHash, WPubkeyHash, WScriptHash};
+use bitcoin::hash_types::{WPubkeyHash, WScriptHash};
use bitcoin::secp256k1::key::PublicKey;
use ln::features::InitFeatures;
Self(ShutdownScriptImpl::Legacy(pubkey))
}
- /// Generates a P2PKH script pubkey from the given [`PubkeyHash`].
- pub fn new_p2pkh(pubkey_hash: &PubkeyHash) -> Self {
- Self(ShutdownScriptImpl::Bolt2(Script::new_p2pkh(pubkey_hash)))
- }
-
- /// Generates a P2SH script pubkey from the given [`ScriptHash`].
- pub fn new_p2sh(script_hash: &ScriptHash) -> Self {
- Self(ShutdownScriptImpl::Bolt2(Script::new_p2sh(script_hash)))
- }
-
/// Generates a P2WPKH script pubkey from the given [`WPubkeyHash`].
pub fn new_p2wpkh(pubkey_hash: &WPubkeyHash) -> Self {
Self(ShutdownScriptImpl::Bolt2(Script::new_v0_wpkh(pubkey_hash)))
}
}
-fn is_bolt2_compliant(script: &Script, features: &InitFeatures) -> bool {
+/// Check if a given script is compliant with BOLT 2's shutdown script requirements for the given
+/// counterparty features.
+pub(crate) fn is_bolt2_compliant(script: &Script, features: &InitFeatures) -> bool {
if script.is_p2pkh() || script.is_p2sh() || script.is_v0_p2wpkh() || script.is_v0_p2wsh() {
true
} else if features.supports_shutdown_anysegwit() {
}
}
+// Note that this is only for our own shutdown scripts. Counterparties are still allowed to send us
+// non-witness shutdown scripts which this rejects.
impl TryFrom<Script> for ShutdownScript {
type Error = InvalidShutdownScript;
}
}
+// Note that this is only for our own shutdown scripts. Counterparties are still allowed to send us
+// non-witness shutdown scripts which this rejects.
impl TryFrom<(Script, &InitFeatures)> for ShutdownScript {
type Error = InvalidShutdownScript;
fn try_from((script, features): (Script, &InitFeatures)) -> Result<Self, Self::Error> {
- if is_bolt2_compliant(&script, features) {
+ if is_bolt2_compliant(&script, features) && script.is_witness_program() {
Ok(Self(ShutdownScriptImpl::Bolt2(script)))
} else {
Err(InvalidShutdownScript { script })
assert_eq!(shutdown_script.into_inner(), p2wpkh_script);
}
- #[test]
- fn generates_p2pkh_from_pubkey_hash() {
- let pubkey_hash = pubkey().pubkey_hash();
- let p2pkh_script = Script::new_p2pkh(&pubkey_hash);
-
- let shutdown_script = ShutdownScript::new_p2pkh(&pubkey_hash);
- assert!(shutdown_script.is_compatible(&InitFeatures::known()));
- assert!(shutdown_script.is_compatible(&InitFeatures::known().clear_shutdown_anysegwit()));
- assert_eq!(shutdown_script.into_inner(), p2pkh_script);
- assert!(ShutdownScript::try_from(p2pkh_script).is_ok());
- }
-
- #[test]
- fn generates_p2sh_from_script_hash() {
- let script_hash = redeem_script().script_hash();
- let p2sh_script = Script::new_p2sh(&script_hash);
-
- let shutdown_script = ShutdownScript::new_p2sh(&script_hash);
- assert!(shutdown_script.is_compatible(&InitFeatures::known()));
- assert!(shutdown_script.is_compatible(&InitFeatures::known().clear_shutdown_anysegwit()));
- assert_eq!(shutdown_script.into_inner(), p2sh_script);
- assert!(ShutdownScript::try_from(p2sh_script).is_ok());
- }
-
#[test]
fn generates_p2wpkh_from_pubkey_hash() {
let pubkey_hash = pubkey().wpubkey_hash().unwrap();