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Diffstat (limited to 'src/script/sign.cpp')
-rw-r--r--src/script/sign.cpp259
1 files changed, 34 insertions, 225 deletions
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index d77991042..36dd68a3d 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);
@@ -63,30 +63,28 @@ 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);
return true;
}
+ // Could not make signature or signature not found, add keyid to missing
+ sigdata.missing_sigs.push_back(keyid);
return false;
}
@@ -114,23 +112,30 @@ 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)) {
+ // Pubkey could not be found, add to missing
+ sigdata.missing_pubkeys.push_back(keyID);
+ 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;
}
case TX_SCRIPTHASH:
- if (GetCScript(provider, sigdata, uint160(vSolutions[0]), scriptRet)) {
+ h160 = uint160(vSolutions[0]);
+ if (GetCScript(provider, sigdata, h160, scriptRet)) {
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
+ // Could not find redeemScript, add to missing
+ sigdata.missing_redeem_script = h160;
return false;
case TX_MULTISIG: {
@@ -138,7 +143,7 @@ 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));
}
}
@@ -158,6 +163,8 @@ static bool SignStep(const SigningProvider& provider, const BaseSignatureCreator
ret.push_back(std::vector<unsigned char>(scriptRet.begin(), scriptRet.end()));
return true;
}
+ // Could not find witnessScript, add to missing
+ sigdata.missing_witness_script = uint256(vSolutions[0]);
return false;
default:
@@ -236,59 +243,6 @@ bool ProduceSignature(const SigningProvider& provider, const BaseSignatureCreato
return sigdata.complete;
}
-bool SignPSBTInput(const SigningProvider& provider, const CMutableTransaction& tx, PSBTInput& input, int index, int sighash)
-{
- // 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 true;
- }
-
- // Fill SignatureData with input info
- SignatureData sigdata;
- input.FillSignatureData(sigdata);
-
- // Get UTXO
- bool require_witness_sig = false;
- CTxOut utxo;
- 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];
- } 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
- // the output being spent. This is safe in case a witness signature is produced (which includes this
- // information directly in the hash), but not for non-witness signatures. Remember that we require
- // a witness signature in this situation.
- require_witness_sig = true;
- } else {
- return false;
- }
-
- MutableTransactionSignatureCreator creator(&tx, index, utxo.nValue, sighash);
- sigdata.witness = false;
- bool sig_complete = ProduceSignature(provider, creator, utxo.scriptPubKey, sigdata);
- // Verify that a witness signature was produced in case one was required.
- 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();
- }
- }
-
- return sig_complete;
-}
-
class SignatureExtractorChecker final : public BaseSignatureChecker
{
private:
@@ -505,160 +459,6 @@ bool IsSolvable(const SigningProvider& provider, const CScript& script)
return false;
}
-bool PartiallySignedTransaction::IsNull() const
-{
- return !tx && inputs.empty() && outputs.empty() && unknown.empty();
-}
-
-void PartiallySignedTransaction::Merge(const PartiallySignedTransaction& psbt)
-{
- for (unsigned int i = 0; i < inputs.size(); ++i) {
- inputs[i].Merge(psbt.inputs[i]);
- }
- for (unsigned int i = 0; i < outputs.size(); ++i) {
- outputs[i].Merge(psbt.outputs[i]);
- }
- unknown.insert(psbt.unknown.begin(), psbt.unknown.end());
-}
-
-bool PartiallySignedTransaction::IsSane() const
-{
- for (PSBTInput input : inputs) {
- if (!input.IsSane()) return false;
- }
- return true;
-}
-
-bool PSBTInput::IsNull() const
-{
- return !non_witness_utxo && witness_utxo.IsNull() && partial_sigs.empty() && unknown.empty() && hd_keypaths.empty() && redeem_script.empty() && witness_script.empty();
-}
-
-void PSBTInput::FillSignatureData(SignatureData& sigdata) const
-{
- if (!final_script_sig.empty()) {
- sigdata.scriptSig = final_script_sig;
- sigdata.complete = true;
- }
- if (!final_script_witness.IsNull()) {
- sigdata.scriptWitness = final_script_witness;
- sigdata.complete = true;
- }
- if (sigdata.complete) {
- return;
- }
-
- sigdata.signatures.insert(partial_sigs.begin(), partial_sigs.end());
- if (!redeem_script.empty()) {
- sigdata.redeem_script = redeem_script;
- }
- if (!witness_script.empty()) {
- sigdata.witness_script = witness_script;
- }
- for (const auto& key_pair : hd_keypaths) {
- sigdata.misc_pubkeys.emplace(key_pair.first.GetID(), key_pair);
- }
-}
-
-void PSBTInput::FromSignatureData(const SignatureData& sigdata)
-{
- if (sigdata.complete) {
- partial_sigs.clear();
- hd_keypaths.clear();
- redeem_script.clear();
- witness_script.clear();
-
- if (!sigdata.scriptSig.empty()) {
- final_script_sig = sigdata.scriptSig;
- }
- if (!sigdata.scriptWitness.IsNull()) {
- final_script_witness = sigdata.scriptWitness;
- }
- return;
- }
-
- partial_sigs.insert(sigdata.signatures.begin(), sigdata.signatures.end());
- if (redeem_script.empty() && !sigdata.redeem_script.empty()) {
- redeem_script = sigdata.redeem_script;
- }
- if (witness_script.empty() && !sigdata.witness_script.empty()) {
- witness_script = sigdata.witness_script;
- }
- for (const auto& entry : sigdata.misc_pubkeys) {
- hd_keypaths.emplace(entry.second);
- }
-}
-
-void PSBTInput::Merge(const PSBTInput& input)
-{
- if (!non_witness_utxo && input.non_witness_utxo) non_witness_utxo = input.non_witness_utxo;
- if (witness_utxo.IsNull() && !input.witness_utxo.IsNull()) {
- witness_utxo = input.witness_utxo;
- non_witness_utxo = nullptr; // Clear out any non-witness utxo when we set a witness one.
- }
-
- partial_sigs.insert(input.partial_sigs.begin(), input.partial_sigs.end());
- hd_keypaths.insert(input.hd_keypaths.begin(), input.hd_keypaths.end());
- unknown.insert(input.unknown.begin(), input.unknown.end());
-
- if (redeem_script.empty() && !input.redeem_script.empty()) redeem_script = input.redeem_script;
- if (witness_script.empty() && !input.witness_script.empty()) witness_script = input.witness_script;
- if (final_script_sig.empty() && !input.final_script_sig.empty()) final_script_sig = input.final_script_sig;
- if (final_script_witness.IsNull() && !input.final_script_witness.IsNull()) final_script_witness = input.final_script_witness;
-}
-
-bool PSBTInput::IsSane() const
-{
- // Cannot have both witness and non-witness utxos
- if (!witness_utxo.IsNull() && non_witness_utxo) return false;
-
- // If we have a witness_script or a scriptWitness, we must also have a witness utxo
- if (!witness_script.empty() && witness_utxo.IsNull()) return false;
- if (!final_script_witness.IsNull() && witness_utxo.IsNull()) return false;
-
- return true;
-}
-
-void PSBTOutput::FillSignatureData(SignatureData& sigdata) const
-{
- if (!redeem_script.empty()) {
- sigdata.redeem_script = redeem_script;
- }
- if (!witness_script.empty()) {
- sigdata.witness_script = witness_script;
- }
- for (const auto& key_pair : hd_keypaths) {
- sigdata.misc_pubkeys.emplace(key_pair.first.GetID(), key_pair);
- }
-}
-
-void PSBTOutput::FromSignatureData(const SignatureData& sigdata)
-{
- if (redeem_script.empty() && !sigdata.redeem_script.empty()) {
- redeem_script = sigdata.redeem_script;
- }
- if (witness_script.empty() && !sigdata.witness_script.empty()) {
- witness_script = sigdata.witness_script;
- }
- for (const auto& entry : sigdata.misc_pubkeys) {
- hd_keypaths.emplace(entry.second);
- }
-}
-
-bool PSBTOutput::IsNull() const
-{
- return redeem_script.empty() && witness_script.empty() && hd_keypaths.empty() && unknown.empty();
-}
-
-void PSBTOutput::Merge(const PSBTOutput& output)
-{
- hd_keypaths.insert(output.hd_keypaths.begin(), output.hd_keypaths.end());
- unknown.insert(output.unknown.begin(), output.unknown.end());
-
- if (redeem_script.empty() && !output.redeem_script.empty()) redeem_script = output.redeem_script;
- if (witness_script.empty() && !output.witness_script.empty()) witness_script = output.witness_script;
-}
-
bool HidingSigningProvider::GetCScript(const CScriptID& scriptid, CScript& script) const
{
return m_provider->GetCScript(scriptid, script);
@@ -683,6 +483,13 @@ 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
+{
+ std::pair<CPubKey, KeyOriginInfo> out;
+ bool ret = LookupHelper(origins, keyid, out);
+ if (ret) info = std::move(out.second);
+ return ret;
+}
bool FlatSigningProvider::GetKey(const CKeyID& keyid, CKey& key) const { return LookupHelper(keys, keyid, key); }
FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvider& b)
@@ -694,5 +501,7 @@ FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvide
ret.pubkeys.insert(b.pubkeys.begin(), b.pubkeys.end());
ret.keys = a.keys;
ret.keys.insert(b.keys.begin(), b.keys.end());
+ ret.origins = a.origins;
+ ret.origins.insert(b.origins.begin(), b.origins.end());
return ret;
}