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-rw-r--r--src/psbt.cpp19
-rw-r--r--src/psbt.h6
-rw-r--r--src/rpc/blockchain.cpp39
-rw-r--r--src/rpc/rawtransaction.cpp40
-rw-r--r--src/rpc/util.cpp38
-rw-r--r--src/rpc/util.h5
-rw-r--r--src/script/sign.cpp16
-rw-r--r--src/script/sign.h3
-rw-r--r--src/wallet/psbtwallet.cpp11
9 files changed, 126 insertions, 51 deletions
diff --git a/src/psbt.cpp b/src/psbt.cpp
index d765133190..fe74002e82 100644
--- a/src/psbt.cpp
+++ b/src/psbt.cpp
@@ -212,6 +212,25 @@ bool PSBTInputSigned(const PSBTInput& input)
return !input.final_script_sig.empty() || !input.final_script_witness.IsNull();
}
+void UpdatePSBTOutput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index)
+{
+ const CTxOut& out = psbt.tx->vout.at(index);
+ PSBTOutput& psbt_out = psbt.outputs.at(index);
+
+ // Fill a SignatureData with output info
+ SignatureData sigdata;
+ psbt_out.FillSignatureData(sigdata);
+
+ // Construct a would-be spend of this output, to update sigdata with.
+ // Note that ProduceSignature is used to fill in metadata (not actual signatures),
+ // so provider does not need to provide any private keys (it can be a HidingSigningProvider).
+ MutableTransactionSignatureCreator creator(psbt.tx.get_ptr(), /* index */ 0, out.nValue, SIGHASH_ALL);
+ ProduceSignature(provider, creator, out.scriptPubKey, sigdata);
+
+ // Put redeem_script, witness_script, key paths, into PSBTOutput.
+ psbt_out.FromSignatureData(sigdata);
+}
+
bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash, SignatureData* out_sigdata, bool use_dummy)
{
PSBTInput& input = psbt.inputs.at(index);
diff --git a/src/psbt.h b/src/psbt.h
index 1bc1e91a84..f3840b9ed3 100644
--- a/src/psbt.h
+++ b/src/psbt.h
@@ -565,6 +565,12 @@ bool PSBTInputSigned(const PSBTInput& input);
/** Signs a PSBTInput, verifying that all provided data matches what is being signed. */
bool SignPSBTInput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index, int sighash = SIGHASH_ALL, SignatureData* out_sigdata = nullptr, bool use_dummy = false);
+/** Updates a PSBTOutput with information from provider.
+ *
+ * This fills in the redeem_script, witness_script, and hd_keypaths where possible.
+ */
+void UpdatePSBTOutput(const SigningProvider& provider, PartiallySignedTransaction& psbt, int index);
+
/**
* Finalizes a PSBT if possible, combining partial signatures.
*
diff --git a/src/rpc/blockchain.cpp b/src/rpc/blockchain.cpp
index 50c4589d9f..9f3748cb65 100644
--- a/src/rpc/blockchain.cpp
+++ b/src/rpc/blockchain.cpp
@@ -2247,41 +2247,12 @@ UniValue scantxoutset(const JSONRPCRequest& request)
// loop through the scan objects
for (const UniValue& scanobject : request.params[1].get_array().getValues()) {
- std::string desc_str;
- std::pair<int64_t, int64_t> range = {0, 1000};
- if (scanobject.isStr()) {
- desc_str = scanobject.get_str();
- } else if (scanobject.isObject()) {
- UniValue desc_uni = find_value(scanobject, "desc");
- if (desc_uni.isNull()) throw JSONRPCError(RPC_INVALID_PARAMETER, "Descriptor needs to be provided in scan object");
- desc_str = desc_uni.get_str();
- UniValue range_uni = find_value(scanobject, "range");
- if (!range_uni.isNull()) {
- range = ParseDescriptorRange(range_uni);
- }
- } else {
- throw JSONRPCError(RPC_INVALID_PARAMETER, "Scan object needs to be either a string or an object");
- }
-
FlatSigningProvider provider;
- auto desc = Parse(desc_str, provider);
- if (!desc) {
- throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid descriptor '%s'", desc_str));
- }
- if (!desc->IsRange()) {
- range.first = 0;
- range.second = 0;
- }
- for (int i = range.first; i <= range.second; ++i) {
- std::vector<CScript> scripts;
- if (!desc->Expand(i, provider, scripts, provider)) {
- throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Cannot derive script without private keys: '%s'", desc_str));
- }
- for (const auto& script : scripts) {
- std::string inferred = InferDescriptor(script, provider)->ToString();
- needles.emplace(script);
- descriptors.emplace(std::move(script), std::move(inferred));
- }
+ auto scripts = EvalDescriptorStringOrObject(scanobject, provider);
+ for (const auto& script : scripts) {
+ std::string inferred = InferDescriptor(script, provider)->ToString();
+ needles.emplace(script);
+ descriptors.emplace(std::move(script), std::move(inferred));
}
}
diff --git a/src/rpc/rawtransaction.cpp b/src/rpc/rawtransaction.cpp
index 9da24afe79..966ff3fedc 100644
--- a/src/rpc/rawtransaction.cpp
+++ b/src/rpc/rawtransaction.cpp
@@ -1495,12 +1495,19 @@ UniValue converttopsbt(const JSONRPCRequest& request)
UniValue utxoupdatepsbt(const JSONRPCRequest& request)
{
- if (request.fHelp || request.params.size() != 1) {
+ if (request.fHelp || request.params.size() < 1 || request.params.size() > 2) {
throw std::runtime_error(
RPCHelpMan{"utxoupdatepsbt",
- "\nUpdates a PSBT with witness UTXOs retrieved from the UTXO set or the mempool.\n",
+ "\nUpdates all segwit inputs and outputs in a PSBT with data from output descriptors, the UTXO set or the mempool.\n",
{
- {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"}
+ {"psbt", RPCArg::Type::STR, RPCArg::Optional::NO, "A base64 string of a PSBT"},
+ {"descriptors", RPCArg::Type::ARR, RPCArg::Optional::OMITTED_NAMED_ARG, "An array of either strings or objects", {
+ {"", RPCArg::Type::STR, RPCArg::Optional::OMITTED, "An output descriptor"},
+ {"", RPCArg::Type::OBJ, RPCArg::Optional::OMITTED, "An object with an output descriptor and extra information", {
+ {"desc", RPCArg::Type::STR, RPCArg::Optional::NO, "An output descriptor"},
+ {"range", RPCArg::Type::RANGE, "1000", "Up to what index HD chains should be explored (either end or [begin,end])"},
+ }},
+ }},
},
RPCResult {
" \"psbt\" (string) The base64-encoded partially signed transaction with inputs updated\n"
@@ -1510,7 +1517,7 @@ UniValue utxoupdatepsbt(const JSONRPCRequest& request)
}}.ToString());
}
- RPCTypeCheck(request.params, {UniValue::VSTR}, true);
+ RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR}, true);
// Unserialize the transactions
PartiallySignedTransaction psbtx;
@@ -1519,6 +1526,17 @@ UniValue utxoupdatepsbt(const JSONRPCRequest& request)
throw JSONRPCError(RPC_DESERIALIZATION_ERROR, strprintf("TX decode failed %s", error));
}
+ // Parse descriptors, if any.
+ FlatSigningProvider provider;
+ if (!request.params[1].isNull()) {
+ auto descs = request.params[1].get_array();
+ for (size_t i = 0; i < descs.size(); ++i) {
+ EvalDescriptorStringOrObject(descs[i], provider);
+ }
+ }
+ // We don't actually need private keys further on; hide them as a precaution.
+ HidingSigningProvider public_provider(&provider, /* nosign */ true, /* nobip32derivs */ false);
+
// Fetch previous transactions (inputs):
CCoinsView viewDummy;
CCoinsViewCache view(&viewDummy);
@@ -1545,11 +1563,19 @@ UniValue utxoupdatepsbt(const JSONRPCRequest& request)
const Coin& coin = view.AccessCoin(psbtx.tx->vin[i].prevout);
- std::vector<std::vector<unsigned char>> solutions_data;
- txnouttype which_type = Solver(coin.out.scriptPubKey, solutions_data);
- if (which_type == TX_WITNESS_V0_SCRIPTHASH || which_type == TX_WITNESS_V0_KEYHASH || which_type == TX_WITNESS_UNKNOWN) {
+ if (IsSegWitOutput(provider, coin.out.scriptPubKey)) {
input.witness_utxo = coin.out;
}
+
+ // Update script/keypath information using descriptor data.
+ // Note that SignPSBTInput does a lot more than just constructing ECDSA signatures
+ // we don't actually care about those here, in fact.
+ SignPSBTInput(public_provider, psbtx, i, /* sighash_type */ 1);
+ }
+
+ // Update script/keypath information using descriptor data.
+ for (unsigned int i = 0; i < psbtx.tx->vout.size(); ++i) {
+ UpdatePSBTOutput(public_provider, psbtx, i);
}
CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION);
diff --git a/src/rpc/util.cpp b/src/rpc/util.cpp
index 4642cf16b1..67ccb225b5 100644
--- a/src/rpc/util.cpp
+++ b/src/rpc/util.cpp
@@ -6,6 +6,7 @@
#include <keystore.h>
#include <outputtype.h>
#include <rpc/util.h>
+#include <script/descriptor.h>
#include <tinyformat.h>
#include <util/strencodings.h>
@@ -697,3 +698,40 @@ std::pair<int64_t, int64_t> ParseDescriptorRange(const UniValue& value)
}
return {low, high};
}
+
+std::vector<CScript> EvalDescriptorStringOrObject(const UniValue& scanobject, FlatSigningProvider& provider)
+{
+ std::string desc_str;
+ std::pair<int64_t, int64_t> range = {0, 1000};
+ if (scanobject.isStr()) {
+ desc_str = scanobject.get_str();
+ } else if (scanobject.isObject()) {
+ UniValue desc_uni = find_value(scanobject, "desc");
+ if (desc_uni.isNull()) throw JSONRPCError(RPC_INVALID_PARAMETER, "Descriptor needs to be provided in scan object");
+ desc_str = desc_uni.get_str();
+ UniValue range_uni = find_value(scanobject, "range");
+ if (!range_uni.isNull()) {
+ range = ParseDescriptorRange(range_uni);
+ }
+ } else {
+ throw JSONRPCError(RPC_INVALID_PARAMETER, "Scan object needs to be either a string or an object");
+ }
+
+ auto desc = Parse(desc_str, provider);
+ if (!desc) {
+ throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Invalid descriptor '%s'", desc_str));
+ }
+ if (!desc->IsRange()) {
+ range.first = 0;
+ range.second = 0;
+ }
+ std::vector<CScript> ret;
+ for (int i = range.first; i <= range.second; ++i) {
+ std::vector<CScript> scripts;
+ if (!desc->Expand(i, provider, scripts, provider)) {
+ throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, strprintf("Cannot derive script without private keys: '%s'", desc_str));
+ }
+ std::move(scripts.begin(), scripts.end(), std::back_inserter(ret));
+ }
+ return ret;
+}
diff --git a/src/rpc/util.h b/src/rpc/util.h
index 0eb2fef5c3..8762281d73 100644
--- a/src/rpc/util.h
+++ b/src/rpc/util.h
@@ -9,6 +9,8 @@
#include <outputtype.h>
#include <pubkey.h>
#include <rpc/protocol.h>
+#include <script/script.h>
+#include <script/sign.h>
#include <script/standard.h>
#include <univalue.h>
@@ -84,6 +86,9 @@ UniValue JSONRPCTransactionError(TransactionError terr, const std::string& err_s
//! Parse a JSON range specified as int64, or [int64, int64]
std::pair<int64_t, int64_t> ParseDescriptorRange(const UniValue& value);
+/** Evaluate a descriptor given as a string, or as a {"desc":...,"range":...} object, with default range of 1000. */
+std::vector<CScript> EvalDescriptorStringOrObject(const UniValue& scanobject, FlatSigningProvider& provider);
+
struct RPCArg {
enum class Type {
OBJ,
diff --git a/src/script/sign.cpp b/src/script/sign.cpp
index 36dd68a3d8..5320dc0876 100644
--- a/src/script/sign.cpp
+++ b/src/script/sign.cpp
@@ -505,3 +505,19 @@ FlatSigningProvider Merge(const FlatSigningProvider& a, const FlatSigningProvide
ret.origins.insert(b.origins.begin(), b.origins.end());
return ret;
}
+
+bool IsSegWitOutput(const SigningProvider& provider, const CScript& script)
+{
+ std::vector<valtype> solutions;
+ auto whichtype = Solver(script, solutions);
+ if (whichtype == TX_WITNESS_V0_SCRIPTHASH || whichtype == TX_WITNESS_V0_KEYHASH || whichtype == TX_WITNESS_UNKNOWN) return true;
+ if (whichtype == TX_SCRIPTHASH) {
+ auto h160 = uint160(solutions[0]);
+ CScript subscript;
+ if (provider.GetCScript(h160, subscript)) {
+ whichtype = Solver(subscript, solutions);
+ if (whichtype == TX_WITNESS_V0_SCRIPTHASH || whichtype == TX_WITNESS_V0_KEYHASH || whichtype == TX_WITNESS_UNKNOWN) return true;
+ }
+ }
+ return false;
+}
diff --git a/src/script/sign.h b/src/script/sign.h
index f746325b90..e5c0329a61 100644
--- a/src/script/sign.h
+++ b/src/script/sign.h
@@ -232,4 +232,7 @@ void UpdateInput(CTxIn& input, const SignatureData& data);
* Solvability is unrelated to whether we consider this output to be ours. */
bool IsSolvable(const SigningProvider& provider, const CScript& script);
+/** Check whether a scriptPubKey is known to be segwit. */
+bool IsSegWitOutput(const SigningProvider& provider, const CScript& script);
+
#endif // BITCOIN_SCRIPT_SIGN_H
diff --git a/src/wallet/psbtwallet.cpp b/src/wallet/psbtwallet.cpp
index ce4788dee1..721a244afb 100644
--- a/src/wallet/psbtwallet.cpp
+++ b/src/wallet/psbtwallet.cpp
@@ -44,16 +44,7 @@ TransactionError FillPSBT(const CWallet* pwallet, PartiallySignedTransaction& ps
// Fill in the bip32 keypaths and redeemscripts for the outputs so that hardware wallets can identify change
for (unsigned int i = 0; i < psbtx.tx->vout.size(); ++i) {
- const CTxOut& out = psbtx.tx->vout.at(i);
- PSBTOutput& psbt_out = psbtx.outputs.at(i);
-
- // Fill a SignatureData with output info
- SignatureData sigdata;
- psbt_out.FillSignatureData(sigdata);
-
- MutableTransactionSignatureCreator creator(psbtx.tx.get_ptr(), 0, out.nValue, 1);
- ProduceSignature(HidingSigningProvider(pwallet, true, !bip32derivs), creator, out.scriptPubKey, sigdata);
- psbt_out.FromSignatureData(sigdata);
+ UpdatePSBTOutput(HidingSigningProvider(pwallet, true, !bip32derivs), psbtx, i);
}
return TransactionError::OK;
generated by cgit v1.2.3 (git 2.26.2) at 2024-11-07 11:32:02 +0000