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-rw-r--r--src/script/sign.cpp79
1 files changed, 45 insertions, 34 deletions
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index d779910425..e5651710f1 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -48,7 +48,7 @@ static bool GetCScript(const SigningProvider& provider, const SignatureData& sig
return false;
}
-static bool GetPubKey(const SigningProvider& provider, SignatureData& sigdata, const CKeyID& address, CPubKey& pubkey)
+static bool GetPubKey(const SigningProvider& provider, const SignatureData& sigdata, const CKeyID& address, CPubKey& pubkey)
{
// Look for pubkey in all partial sigs
const auto it = sigdata.signatures.find(address);
@@ -63,25 +63,21 @@ static bool GetPubKey(const SigningProvider& provider, SignatureData& sigdata, c
return true;
}
// Query the underlying provider
- if (provider.GetPubKey(address, pubkey)) {
- KeyOriginInfo info;
- if (provider.GetKeyOrigin(address, info)) {
- sigdata.misc_pubkeys.emplace(address, std::make_pair(pubkey, std::move(info)));
- }
- return true;
- }
- return false;
+ return provider.GetPubKey(address, pubkey);
}
-static bool CreateSig(const BaseSignatureCreator& creator, SignatureData& sigdata, const SigningProvider& provider, std::vector<unsigned char>& sig_out, const CKeyID& keyid, const CScript& scriptcode, SigVersion sigversion)
+static bool CreateSig(const BaseSignatureCreator& creator, SignatureData& sigdata, const SigningProvider& provider, std::vector<unsigned char>& sig_out, const CPubKey& pubkey, const CScript& scriptcode, SigVersion sigversion)
{
+ CKeyID keyid = pubkey.GetID();
const auto it = sigdata.signatures.find(keyid);
if (it != sigdata.signatures.end()) {
sig_out = it->second.second;
return true;
}
- CPubKey pubkey;
- GetPubKey(provider, sigdata, keyid, pubkey);
+ KeyOriginInfo info;
+ if (provider.GetKeyOrigin(keyid, info)) {
+ sigdata.misc_pubkeys.emplace(keyid, std::make_pair(pubkey, std::move(info)));
+ }
if (creator.CreateSig(provider, sig_out, keyid, scriptcode, sigversion)) {
auto i = sigdata.signatures.emplace(keyid, SigPair(pubkey, sig_out));
assert(i.second);
@@ -114,15 +110,15 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
case TX_WITNESS_UNKNOWN:
return false;
case TX_PUBKEY:
- if (!CreateSig(creator, sigdata, provider, sig, CPubKey(vSolutions[0]).GetID(), scriptPubKey, sigversion)) return false;
+ if (!CreateSig(creator, sigdata, provider, sig, CPubKey(vSolutions[0]), scriptPubKey, sigversion)) return false;
ret.push_back(std::move(sig));
return true;
case TX_PUBKEYHASH: {
CKeyID keyID = CKeyID(uint160(vSolutions[0]));
- if (!CreateSig(creator, sigdata, provider, sig, keyID, scriptPubKey, sigversion)) return false;
- ret.push_back(std::move(sig));
CPubKey pubkey;
- GetPubKey(provider, sigdata, keyID, pubkey);
+ if (!GetPubKey(provider, sigdata, keyID, pubkey)) return false;
+ if (!CreateSig(creator, sigdata, provider, sig, pubkey, scriptPubKey, sigversion)) return false;
+ ret.push_back(std::move(sig));
ret.push_back(ToByteVector(pubkey));
return true;
}
@@ -138,7 +134,7 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
ret.push_back(valtype()); // workaround CHECKMULTISIG bug
for (size_t i = 1; i < vSolutions.size() - 1; ++i) {
CPubKey pubkey = CPubKey(vSolutions[i]);
- if (ret.size() < required + 1 && CreateSig(creator, sigdata, provider, sig, pubkey.GetID(), scriptPubKey, sigversion)) {
+ if (ret.size() < required + 1 && CreateSig(creator, sigdata, provider, sig, pubkey, scriptPubKey, sigversion)) {
ret.push_back(std::move(sig));
}
}
@@ -236,10 +232,17 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
return sigdata.complete;
}
-bool SignPSBTInput(const SigningProvider& provider, const CMutableTransaction& tx, PSBTInput& input, int index, int sighash)
+bool PSBTInputSigned(PSBTInput& input)
{
- // if this input has a final scriptsig or scriptwitness, don't do anything with it
- if (!input.final_script_sig.empty() || !input.final_script_witness.IsNull()) {
+ return !input.final_script_sig.empty() || !input.final_script_witness.IsNull();
+}
+
+bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash)
+{
+ PSBTInput& input = psbt.inputs.at(index);
+ const CMutableTransaction& tx = *psbt.tx;
+
+ if (PSBTInputSigned(input)) {
return true;
}
@@ -250,15 +253,19 @@ bool SignPSBTInput(const SigningProvider& provider, const CMutableTransaction& t
// Get UTXO
bool require_witness_sig = false;
CTxOut utxo;
+
+ // Verify input sanity, which checks that at most one of witness or non-witness utxos is provided.
+ if (!input.IsSane()) {
+ return false;
+ }
+
if (input.non_witness_utxo) {
// If we're taking our information from a non-witness UTXO, verify that it matches the prevout.
- if (input.non_witness_utxo->GetHash() != tx.vin[index].prevout.hash) return false;
- // If both witness and non-witness UTXO are provided, verify that they match. This check shouldn't
- // matter, as the PSBT deserializer enforces only one of both is provided, and the only way both
- // can be present is when they're added simultaneously by FillPSBT (in which case they always match).
- // Still, check in order to not rely on callers to enforce this.
- if (!input.witness_utxo.IsNull() && input.non_witness_utxo->vout[tx.vin[index].prevout.n] != input.witness_utxo) return false;
- utxo = input.non_witness_utxo->vout[tx.vin[index].prevout.n];
+ COutPoint prevout = tx.vin[index].prevout;
+ if (input.non_witness_utxo->GetHash() != prevout.hash) {
+ return false;
+ }
+ utxo = input.non_witness_utxo->vout[prevout.n];
} else if (!input.witness_utxo.IsNull()) {
utxo = input.witness_utxo;
// When we're taking our information from a witness UTXO, we can't verify it is actually data from
@@ -277,13 +284,10 @@ bool SignPSBTInput(const SigningProvider& provider, const CMutableTransaction& t
if (require_witness_sig && !sigdata.witness) return false;
input.FromSignatureData(sigdata);
- // If both UTXO types are present, drop the unnecessary one.
- if (input.non_witness_utxo && !input.witness_utxo.IsNull()) {
- if (sigdata.witness) {
- input.non_witness_utxo = nullptr;
- } else {
- input.witness_utxo.SetNull();
- }
+ // If we have a witness signature, use the smaller witness UTXO.
+ if (sigdata.witness) {
+ input.witness_utxo = utxo;
+ input.non_witness_utxo = nullptr;
}
return sig_complete;
@@ -505,6 +509,12 @@ bool IsSolvable(const SigningProvider& provider, const CScript& script)
return false;
}
+PartiallySignedTransaction::PartiallySignedTransaction(const CTransaction& tx) : tx(tx)
+{
+ inputs.resize(tx.vin.size());
+ outputs.resize(tx.vout.size());
+}
+
bool PartiallySignedTransaction::IsNull() const
{
return !tx && inputs.empty() && outputs.empty() && unknown.empty();
@@ -683,6 +693,7 @@ bool HidingSigningProvider::GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& inf
bool FlatSigningProvider::GetCScript(const CScriptID& scriptid, CScript& script) const { return LookupHelper(scripts, scriptid, script); }
bool FlatSigningProvider::GetPubKey(const CKeyID& keyid, CPubKey& pubkey) const { return LookupHelper(pubkeys, keyid, pubkey); }
+bool FlatSigningProvider::GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const { return LookupHelper(origins, keyid, info); }
bool FlatSigningProvider::GetKey(const CKeyID& keyid, CKey& key) const { return LookupHelper(keys, keyid, key); }
FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b)
generated by cgit v1.2.3 (git 2.26.2) at 2024-09-05 17:40:43 +0000