diff options
Diffstat (limited to 'src/wallet')
| -rw-r--r-- | src/wallet/psbtwallet.cpp | 77 | ||||
| -rw-r--r-- | src/wallet/psbtwallet.h | 32 | ||||
| -rw-r--r-- | src/wallet/rpcwallet.cpp | 57 | ||||
| -rw-r--r-- | src/wallet/scriptpubkeyman.cpp | 64 | ||||
| -rw-r--r-- | src/wallet/scriptpubkeyman.h | 28 | ||||
| -rw-r--r-- | src/wallet/test/psbt_wallet_tests.cpp | 7 | ||||
| -rw-r--r-- | src/wallet/wallet.cpp | 211 | ||||
| -rw-r--r-- | src/wallet/wallet.h | 34 |
8 files changed, 308 insertions, 202 deletions
diff --git a/src/wallet/psbtwallet.cpp b/src/wallet/psbtwallet.cpp deleted file mode 100644 index d995fb06d4..0000000000 --- a/src/wallet/psbtwallet.cpp +++ /dev/null @@ -1,77 +0,0 @@ -// Copyright (c) 2009-2019 The Bitcoin Core developers -// Distributed under the MIT software license, see the accompanying -// file COPYING or http://www.opensource.org/licenses/mit-license.php. - -#include <wallet/psbtwallet.h> - -TransactionError FillPSBT(const CWallet* pwallet, PartiallySignedTransaction& psbtx, bool& complete, int sighash_type, bool sign, bool bip32derivs) -{ - LOCK(pwallet->cs_wallet); - // Get all of the previous transactions - complete = true; - for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) { - const CTxIn& txin = psbtx.tx->vin[i]; - PSBTInput& input = psbtx.inputs.at(i); - - if (PSBTInputSigned(input)) { - continue; - } - - // Verify input looks sane. This will check that we have at most one uxto, witness or non-witness. - if (!input.IsSane()) { - return TransactionError::INVALID_PSBT; - } - - // If we have no utxo, grab it from the wallet. - if (!input.non_witness_utxo && input.witness_utxo.IsNull()) { - const uint256& txhash = txin.prevout.hash; - const auto it = pwallet->mapWallet.find(txhash); - if (it != pwallet->mapWallet.end()) { - const CWalletTx& wtx = it->second; - // We only need the non_witness_utxo, which is a superset of the witness_utxo. - // The signing code will switch to the smaller witness_utxo if this is ok. - input.non_witness_utxo = wtx.tx; - } - } - - // Get the Sighash type - if (sign && input.sighash_type > 0 && input.sighash_type != sighash_type) { - return TransactionError::SIGHASH_MISMATCH; - } - - // Get the scriptPubKey to know which SigningProvider to use - CScript script; - if (!input.witness_utxo.IsNull()) { - script = input.witness_utxo.scriptPubKey; - } else if (input.non_witness_utxo) { - if (txin.prevout.n >= input.non_witness_utxo->vout.size()) { - return TransactionError::MISSING_INPUTS; - } - script = input.non_witness_utxo->vout[txin.prevout.n].scriptPubKey; - } else { - // There's no UTXO so we can just skip this now - complete = false; - continue; - } - SignatureData sigdata; - input.FillSignatureData(sigdata); - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(script, sigdata); - if (!provider) { - complete = false; - continue; - } - - complete &= SignPSBTInput(HidingSigningProvider(provider.get(), !sign, !bip32derivs), psbtx, i, sighash_type); - } - - // 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); - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(out.scriptPubKey); - if (provider) { - UpdatePSBTOutput(HidingSigningProvider(provider.get(), true, !bip32derivs), psbtx, i); - } - } - - return TransactionError::OK; -} diff --git a/src/wallet/psbtwallet.h b/src/wallet/psbtwallet.h deleted file mode 100644 index 8285bb901c..0000000000 --- a/src/wallet/psbtwallet.h +++ /dev/null @@ -1,32 +0,0 @@ -// Copyright (c) 2009-2019 The Bitcoin Core developers -// Distributed under the MIT software license, see the accompanying -// file COPYING or http://www.opensource.org/licenses/mit-license.php. - -#ifndef BITCOIN_WALLET_PSBTWALLET_H -#define BITCOIN_WALLET_PSBTWALLET_H - -#include <psbt.h> -#include <wallet/wallet.h> - -/** - * Fills out a PSBT with information from the wallet. Fills in UTXOs if we have - * them. Tries to sign if sign=true. Sets `complete` if the PSBT is now complete - * (i.e. has all required signatures or signature-parts, and is ready to - * finalize.) Sets `error` and returns false if something goes wrong. - * - * @param[in] pwallet pointer to a wallet - * @param[in] psbtx PartiallySignedTransaction to fill in - * @param[out] complete indicates whether the PSBT is now complete - * @param[in] sighash_type the sighash type to use when signing (if PSBT does not specify) - * @param[in] sign whether to sign or not - * @param[in] bip32derivs whether to fill in bip32 derivation information if available - * return error - */ -NODISCARD TransactionError FillPSBT(const CWallet* pwallet, - PartiallySignedTransaction& psbtx, - bool& complete, - int sighash_type = 1 /* SIGHASH_ALL */, - bool sign = true, - bool bip32derivs = true); - -#endif // BITCOIN_WALLET_PSBTWALLET_H diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp index bbbaea88d1..44e580a52a 100644 --- a/src/wallet/rpcwallet.cpp +++ b/src/wallet/rpcwallet.cpp @@ -27,7 +27,6 @@ #include <util/vector.h> #include <wallet/coincontrol.h> #include <wallet/feebumper.h> -#include <wallet/psbtwallet.h> #include <wallet/rpcwallet.h> #include <wallet/wallet.h> #include <wallet/walletdb.h> @@ -566,22 +565,12 @@ static UniValue signmessage(const JSONRPCRequest& request) throw JSONRPCError(RPC_TYPE_ERROR, "Address does not refer to key"); } - CScript script_pub_key = GetScriptForDestination(*pkhash); - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(script_pub_key); - if (!provider) { - throw JSONRPCError(RPC_WALLET_ERROR, "Private key not available"); - } - - CKey key; - CKeyID keyID(*pkhash); - if (!provider->GetKey(keyID, key)) { - throw JSONRPCError(RPC_WALLET_ERROR, "Private key not available"); - } - std::string signature; - - if (!MessageSign(key, strMessage, signature)) { - throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, "Sign failed"); + SigningResult err = pwallet->SignMessage(strMessage, *pkhash, signature); + if (err == SigningResult::SIGNING_FAILED) { + throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, SigningResultString(err)); + } else if (err != SigningResult::OK){ + throw JSONRPCError(RPC_WALLET_ERROR, SigningResultString(err)); } return signature; @@ -2973,7 +2962,7 @@ static UniValue listunspent(const JSONRPCRequest& request) entry.pushKV("label", i->second.name); } - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(scriptPubKey); + std::unique_ptr<SigningProvider> provider = pwallet->GetSolvingProvider(scriptPubKey); if (provider) { if (scriptPubKey.IsPayToScriptHash()) { const CScriptID& hash = CScriptID(boost::get<ScriptHash>(address)); @@ -3013,7 +3002,7 @@ static UniValue listunspent(const JSONRPCRequest& request) entry.pushKV("spendable", out.fSpendable); entry.pushKV("solvable", out.fSolvable); if (out.fSolvable) { - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(scriptPubKey); + std::unique_ptr<SigningProvider> provider = pwallet->GetSolvingProvider(scriptPubKey); if (provider) { auto descriptor = InferDescriptor(scriptPubKey, *provider); entry.pushKV("desc", descriptor->ToString()); @@ -3329,23 +3318,15 @@ UniValue signrawtransactionwithwallet(const JSONRPCRequest& request) // Parse the prevtxs array ParsePrevouts(request.params[1], nullptr, coins); - std::set<std::shared_ptr<SigningProvider>> providers; - for (const std::pair<COutPoint, Coin> coin_pair : coins) { - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(coin_pair.second.out.scriptPubKey); - if (provider) { - providers.insert(std::move(provider)); - } - } - if (providers.size() == 0) { - // When there are no available providers, use a dummy SigningProvider so we can check if the tx is complete - providers.insert(std::make_shared<SigningProvider>()); - } + int nHashType = ParseSighashString(request.params[2]); + // Script verification errors + std::map<int, std::string> input_errors; + + bool complete = pwallet->SignTransaction(mtx, coins, nHashType, input_errors); UniValue result(UniValue::VOBJ); - for (std::shared_ptr<SigningProvider> provider : providers) { - SignTransaction(mtx, provider.get(), coins, request.params[2], result); - } - return result; + SignTransactionResultToJSON(mtx, complete, coins, input_errors, result); + return result; } static UniValue bumpfee(const JSONRPCRequest& request) @@ -3524,7 +3505,7 @@ static UniValue bumpfee(const JSONRPCRequest& request) } else { PartiallySignedTransaction psbtx(mtx); bool complete = false; - const TransactionError err = FillPSBT(pwallet, psbtx, complete, SIGHASH_ALL, false /* sign */, true /* bip32derivs */); + const TransactionError err = pwallet->FillPSBT(psbtx, complete, SIGHASH_ALL, false /* sign */, true /* bip32derivs */); CHECK_NONFATAL(err == TransactionError::OK); CHECK_NONFATAL(!complete); CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); @@ -3735,7 +3716,7 @@ static UniValue DescribeWalletAddress(const CWallet* const pwallet, const CTxDes CScript script = GetScriptForDestination(dest); std::unique_ptr<SigningProvider> provider = nullptr; if (pwallet) { - provider = pwallet->GetSigningProvider(script); + provider = pwallet->GetSolvingProvider(script); } ret.pushKVs(detail); ret.pushKVs(boost::apply_visitor(DescribeWalletAddressVisitor(provider.get()), dest)); @@ -3837,7 +3818,7 @@ UniValue getaddressinfo(const JSONRPCRequest& request) CScript scriptPubKey = GetScriptForDestination(dest); ret.pushKV("scriptPubKey", HexStr(scriptPubKey.begin(), scriptPubKey.end())); - std::unique_ptr<SigningProvider> provider = pwallet->GetSigningProvider(scriptPubKey); + std::unique_ptr<SigningProvider> provider = pwallet->GetSolvingProvider(scriptPubKey); isminetype mine = pwallet->IsMine(dest); ret.pushKV("ismine", bool(mine & ISMINE_SPENDABLE)); @@ -4141,7 +4122,7 @@ UniValue walletprocesspsbt(const JSONRPCRequest& request) bool sign = request.params[1].isNull() ? true : request.params[1].get_bool(); bool bip32derivs = request.params[3].isNull() ? true : request.params[3].get_bool(); bool complete = true; - const TransactionError err = FillPSBT(pwallet, psbtx, complete, nHashType, sign, bip32derivs); + const TransactionError err = pwallet->FillPSBT(psbtx, complete, nHashType, sign, bip32derivs); if (err != TransactionError::OK) { throw JSONRPCTransactionError(err); } @@ -4264,7 +4245,7 @@ UniValue walletcreatefundedpsbt(const JSONRPCRequest& request) // Fill transaction with out data but don't sign bool bip32derivs = request.params[4].isNull() ? true : request.params[4].get_bool(); bool complete = true; - const TransactionError err = FillPSBT(pwallet, psbtx, complete, 1, false, bip32derivs); + const TransactionError err = pwallet->FillPSBT(psbtx, complete, 1, false, bip32derivs); if (err != TransactionError::OK) { throw JSONRPCTransactionError(err); } diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp index 8851d0af31..6fe1d84d64 100644 --- a/src/wallet/scriptpubkeyman.cpp +++ b/src/wallet/scriptpubkeyman.cpp @@ -5,6 +5,7 @@ #include <key_io.h> #include <outputtype.h> #include <script/descriptor.h> +#include <script/sign.h> #include <util/bip32.h> #include <util/strencodings.h> #include <util/translation.h> @@ -477,7 +478,7 @@ int64_t LegacyScriptPubKeyMan::GetTimeFirstKey() const return nTimeFirstKey; } -std::unique_ptr<SigningProvider> LegacyScriptPubKeyMan::GetSigningProvider(const CScript& script) const +std::unique_ptr<SigningProvider> LegacyScriptPubKeyMan::GetSolvingProvider(const CScript& script) const { return MakeUnique<LegacySigningProvider>(*this); } @@ -505,6 +506,67 @@ bool LegacyScriptPubKeyMan::CanProvide(const CScript& script, SignatureData& sig } } +bool LegacyScriptPubKeyMan::SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const +{ + return ::SignTransaction(tx, this, coins, sighash, input_errors); +} + +SigningResult LegacyScriptPubKeyMan::SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const +{ + CKeyID key_id(pkhash); + CKey key; + if (!GetKey(key_id, key)) { + return SigningResult::PRIVATE_KEY_NOT_AVAILABLE; + } + + if (MessageSign(key, message, str_sig)) { + return SigningResult::OK; + } + return SigningResult::SIGNING_FAILED; +} + +TransactionError LegacyScriptPubKeyMan::FillPSBT(PartiallySignedTransaction& psbtx, int sighash_type, bool sign, bool bip32derivs) const +{ + for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) { + const CTxIn& txin = psbtx.tx->vin[i]; + PSBTInput& input = psbtx.inputs.at(i); + + if (PSBTInputSigned(input)) { + continue; + } + + // Verify input looks sane. This will check that we have at most one uxto, witness or non-witness. + if (!input.IsSane()) { + return TransactionError::INVALID_PSBT; + } + + // Get the Sighash type + if (sign && input.sighash_type > 0 && input.sighash_type != sighash_type) { + return TransactionError::SIGHASH_MISMATCH; + } + + // Check non_witness_utxo has specified prevout + if (input.non_witness_utxo) { + if (txin.prevout.n >= input.non_witness_utxo->vout.size()) { + return TransactionError::MISSING_INPUTS; + } + } else if (input.witness_utxo.IsNull()) { + // There's no UTXO so we can just skip this now + continue; + } + SignatureData sigdata; + input.FillSignatureData(sigdata); + SignPSBTInput(HidingSigningProvider(this, !sign, !bip32derivs), psbtx, i, sighash_type); + } + + // 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) { + UpdatePSBTOutput(HidingSigningProvider(this, true, !bip32derivs), psbtx, i); + } + + return TransactionError::OK; +} + const CKeyMetadata* LegacyScriptPubKeyMan::GetMetadata(const CTxDestination& dest) const { LOCK(cs_KeyStore); diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h index 1a0d34a445..8512eadf31 100644 --- a/src/wallet/scriptpubkeyman.h +++ b/src/wallet/scriptpubkeyman.h @@ -5,8 +5,11 @@ #ifndef BITCOIN_WALLET_SCRIPTPUBKEYMAN_H #define BITCOIN_WALLET_SCRIPTPUBKEYMAN_H +#include <psbt.h> #include <script/signingprovider.h> #include <script/standard.h> +#include <util/error.h> +#include <util/message.h> #include <wallet/crypter.h> #include <wallet/ismine.h> #include <wallet/walletdb.h> @@ -203,13 +206,20 @@ public: virtual const CKeyMetadata* GetMetadata(const CTxDestination& dest) const { return nullptr; } - virtual std::unique_ptr<SigningProvider> GetSigningProvider(const CScript& script) const { return nullptr; } + virtual std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script) const { return nullptr; } - /** Whether this ScriptPubKeyMan can provide a SigningProvider (via GetSigningProvider) that, combined with - * sigdata, can produce a valid signature. + /** Whether this ScriptPubKeyMan can provide a SigningProvider (via GetSolvingProvider) that, combined with + * sigdata, can produce solving data. */ virtual bool CanProvide(const CScript& script, SignatureData& sigdata) { return false; } + /** Creates new signatures and adds them to the transaction. Returns whether all inputs were signed */ + virtual bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const { return false; } + /** Sign a message with the given script */ + virtual SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const { return SigningResult::SIGNING_FAILED; }; + /** Adds script and derivation path information to a PSBT, and optionally signs it. */ + virtual TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false) const { return TransactionError::INVALID_PSBT; } + virtual uint256 GetID() const { return uint256(); } /** Prepends the wallet name in logging output to ease debugging in multi-wallet use cases */ @@ -346,10 +356,14 @@ public: bool CanGetAddresses(bool internal = false) const override; - std::unique_ptr<SigningProvider> GetSigningProvider(const CScript& script) const override; + std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script) const override; bool CanProvide(const CScript& script, SignatureData& sigdata) override; + bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const override; + SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const override; + TransactionError FillPSBT(PartiallySignedTransaction& psbt, int sighash_type = 1 /* SIGHASH_ALL */, bool sign = true, bool bip32derivs = false) const override; + uint256 GetID() const override; // Map from Key ID to key metadata. @@ -447,7 +461,7 @@ public: std::set<CKeyID> GetKeys() const override; }; -/** Wraps a LegacyScriptPubKeyMan so that it can be returned in a new unique_ptr */ +/** Wraps a LegacyScriptPubKeyMan so that it can be returned in a new unique_ptr. Does not provide privkeys */ class LegacySigningProvider : public SigningProvider { private: @@ -458,8 +472,8 @@ public: bool GetCScript(const CScriptID &scriptid, CScript& script) const override { return m_spk_man.GetCScript(scriptid, script); } bool HaveCScript(const CScriptID &scriptid) const override { return m_spk_man.HaveCScript(scriptid); } bool GetPubKey(const CKeyID &address, CPubKey& pubkey) const override { return m_spk_man.GetPubKey(address, pubkey); } - bool GetKey(const CKeyID &address, CKey& key) const override { return m_spk_man.GetKey(address, key); } - bool HaveKey(const CKeyID &address) const override { return m_spk_man.HaveKey(address); } + bool GetKey(const CKeyID &address, CKey& key) const override { return false; } + bool HaveKey(const CKeyID &address) const override { return false; } bool GetKeyOrigin(const CKeyID& keyid, KeyOriginInfo& info) const override { return m_spk_man.GetKeyOrigin(keyid, info); } }; diff --git a/src/wallet/test/psbt_wallet_tests.cpp b/src/wallet/test/psbt_wallet_tests.cpp index f923de6178..8b7b7af21d 100644 --- a/src/wallet/test/psbt_wallet_tests.cpp +++ b/src/wallet/test/psbt_wallet_tests.cpp @@ -5,7 +5,6 @@ #include <key_io.h> #include <util/bip32.h> #include <util/strencodings.h> -#include <wallet/psbtwallet.h> #include <wallet/wallet.h> #include <boost/test/unit_test.hpp> @@ -61,7 +60,7 @@ BOOST_AUTO_TEST_CASE(psbt_updater_test) // Fill transaction with our data bool complete = true; - BOOST_REQUIRE_EQUAL(TransactionError::OK, FillPSBT(&m_wallet, psbtx, complete, SIGHASH_ALL, false, true)); + BOOST_REQUIRE_EQUAL(TransactionError::OK, m_wallet.FillPSBT(psbtx, complete, SIGHASH_ALL, false, true)); // Get the final tx CDataStream ssTx(SER_NETWORK, PROTOCOL_VERSION); @@ -74,9 +73,7 @@ BOOST_AUTO_TEST_CASE(psbt_updater_test) // Try to sign the mutated input SignatureData sigdata; - psbtx.inputs[0].FillSignatureData(sigdata); - const std::unique_ptr<SigningProvider> provider = m_wallet.GetSigningProvider(ws1, sigdata); - BOOST_CHECK(!SignPSBTInput(*provider, psbtx, 0, SIGHASH_ALL)); + BOOST_CHECK(spk_man->FillPSBT(psbtx, SIGHASH_ALL, true, true) != TransactionError::OK); } BOOST_AUTO_TEST_CASE(parse_hd_keypath) diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp index 9d2e5598e8..79e29d050f 100644 --- a/src/wallet/wallet.cpp +++ b/src/wallet/wallet.cpp @@ -1407,7 +1407,7 @@ bool CWallet::DummySignInput(CTxIn &tx_in, const CTxOut &txout, bool use_max_sig const CScript& scriptPubKey = txout.scriptPubKey; SignatureData sigdata; - std::unique_ptr<SigningProvider> provider = GetSigningProvider(scriptPubKey); + std::unique_ptr<SigningProvider> provider = GetSolvingProvider(scriptPubKey); if (!provider) { // We don't know about this scriptpbuKey; return false; @@ -2171,7 +2171,7 @@ void CWallet::AvailableCoins(interfaces::Chain::Lock& locked_chain, std::vector< continue; } - std::unique_ptr<SigningProvider> provider = GetSigningProvider(wtx.tx->vout[i].scriptPubKey); + std::unique_ptr<SigningProvider> provider = GetSolvingProvider(wtx.tx->vout[i].scriptPubKey); bool solvable = provider ? IsSolvable(*provider, wtx.tx->vout[i].scriptPubKey) : false; bool spendable = ((mine & ISMINE_SPENDABLE) != ISMINE_NO) || (((mine & ISMINE_WATCH_ONLY) != ISMINE_NO) && (coinControl && coinControl->fAllowWatchOnly && solvable)); @@ -2410,34 +2410,172 @@ bool CWallet::SelectCoins(const std::vector<COutput>& vAvailableCoins, const CAm return res; } -bool CWallet::SignTransaction(CMutableTransaction& tx) +bool CWallet::SignTransaction(CMutableTransaction& tx) const { AssertLockHeld(cs_wallet); - // sign the new tx - int nIn = 0; + // Build coins map + std::map<COutPoint, Coin> coins; for (auto& input : tx.vin) { std::map<uint256, CWalletTx>::const_iterator mi = mapWallet.find(input.prevout.hash); if(mi == mapWallet.end() || input.prevout.n >= mi->second.tx->vout.size()) { return false; } - const CScript& scriptPubKey = mi->second.tx->vout[input.prevout.n].scriptPubKey; - const CAmount& amount = mi->second.tx->vout[input.prevout.n].nValue; + const CWalletTx& wtx = mi->second; + coins[input.prevout] = Coin(wtx.tx->vout[input.prevout.n], wtx.m_confirm.block_height, wtx.IsCoinBase()); + } + std::map<int, std::string> input_errors; + return SignTransaction(tx, coins, SIGHASH_ALL, input_errors); +} + +bool CWallet::SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const +{ + // Sign the tx with ScriptPubKeyMans + // Because each ScriptPubKeyMan can sign more than one input, we need to keep track of each ScriptPubKeyMan that has signed this transaction. + // Each iteration, we may sign more txins than the txin that is specified in that iteration. + // We assume that each input is signed by only one ScriptPubKeyMan. + std::set<uint256> visited_spk_mans; + for (unsigned int i = 0; i < tx.vin.size(); i++) { + // Get the prevout + CTxIn& txin = tx.vin[i]; + auto coin = coins.find(txin.prevout); + if (coin == coins.end() || coin->second.IsSpent()) { + input_errors[i] = "Input not found or already spent"; + continue; + } + + // Check if this input is complete + SignatureData sigdata = DataFromTransaction(tx, i, coin->second.out); + if (sigdata.complete) { + continue; + } + + // Input needs to be signed, find the right ScriptPubKeyMan + std::set<ScriptPubKeyMan*> spk_mans = GetScriptPubKeyMans(coin->second.out.scriptPubKey, sigdata); + if (spk_mans.size() == 0) { + input_errors[i] = "Unable to sign input, missing keys"; + continue; + } + + for (auto& spk_man : spk_mans) { + // If we've already been signed by this spk_man, skip it + if (visited_spk_mans.count(spk_man->GetID()) > 0) { + continue; + } + + // Sign the tx. + // spk_man->SignTransaction will return true if the transaction is complete, + // so we can exit early and return true if that happens. + if (spk_man->SignTransaction(tx, coins, sighash, input_errors)) { + return true; + } + + // Add this spk_man to visited_spk_mans so we can skip it later + visited_spk_mans.insert(spk_man->GetID()); + } + } + return false; +} + +TransactionError CWallet::FillPSBT(PartiallySignedTransaction& psbtx, bool& complete, int sighash_type, bool sign, bool bip32derivs) const +{ + LOCK(cs_wallet); + // Get all of the previous transactions + for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) { + const CTxIn& txin = psbtx.tx->vin[i]; + PSBTInput& input = psbtx.inputs.at(i); + + if (PSBTInputSigned(input)) { + continue; + } + + // Verify input looks sane. This will check that we have at most one uxto, witness or non-witness. + if (!input.IsSane()) { + return TransactionError::INVALID_PSBT; + } + + // If we have no utxo, grab it from the wallet. + if (!input.non_witness_utxo && input.witness_utxo.IsNull()) { + const uint256& txhash = txin.prevout.hash; + const auto it = mapWallet.find(txhash); + if (it != mapWallet.end()) { + const CWalletTx& wtx = it->second; + // We only need the non_witness_utxo, which is a superset of the witness_utxo. + // The signing code will switch to the smaller witness_utxo if this is ok. + input.non_witness_utxo = wtx.tx; + } + } + } + + // Fill in information from ScriptPubKeyMans + // Because each ScriptPubKeyMan may be able to fill more than one input, we need to keep track of each ScriptPubKeyMan that has filled this psbt. + // Each iteration, we may fill more inputs than the input that is specified in that iteration. + // We assume that each input is filled by only one ScriptPubKeyMan + std::set<uint256> visited_spk_mans; + for (unsigned int i = 0; i < psbtx.tx->vin.size(); ++i) { + const CTxIn& txin = psbtx.tx->vin[i]; + PSBTInput& input = psbtx.inputs.at(i); + + if (PSBTInputSigned(input)) { + continue; + } + + // Get the scriptPubKey to know which ScriptPubKeyMan to use + CScript script; + if (!input.witness_utxo.IsNull()) { + script = input.witness_utxo.scriptPubKey; + } else if (input.non_witness_utxo) { + if (txin.prevout.n >= input.non_witness_utxo->vout.size()) { + return TransactionError::MISSING_INPUTS; + } + script = input.non_witness_utxo->vout[txin.prevout.n].scriptPubKey; + } else { + // There's no UTXO so we can just skip this now + continue; + } SignatureData sigdata; + input.FillSignatureData(sigdata); + std::set<ScriptPubKeyMan*> spk_mans = GetScriptPubKeyMans(script, sigdata); + if (spk_mans.size() == 0) { + continue; + } - std::unique_ptr<SigningProvider> provider = GetSigningProvider(scriptPubKey); - if (!provider) { - // We don't know about this scriptpbuKey; - return false; + for (auto& spk_man : spk_mans) { + // If we've already been signed by this spk_man, skip it + if (visited_spk_mans.count(spk_man->GetID()) > 0) { + continue; + } + + // Fill in the information from the spk_man + TransactionError res = spk_man->FillPSBT(psbtx, sighash_type, sign, bip32derivs); + if (res != TransactionError::OK) { + return res; + } + + // Add this spk_man to visited_spk_mans so we can skip it later + visited_spk_mans.insert(spk_man->GetID()); } + } - if (!ProduceSignature(*provider, MutableTransactionSignatureCreator(&tx, nIn, amount, SIGHASH_ALL), scriptPubKey, sigdata)) { - return false; + // Complete if every input is now signed + complete = true; + for (const auto& input : psbtx.inputs) { + complete &= PSBTInputSigned(input); + } + + return TransactionError::OK; +} + +SigningResult CWallet::SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const +{ + SignatureData sigdata; + CScript script_pub_key = GetScriptForDestination(pkhash); + for (const auto& spk_man_pair : m_spk_managers) { + if (spk_man_pair.second->CanProvide(script_pub_key, sigdata)) { + return spk_man_pair.second->SignMessage(message, pkhash, str_sig); } - UpdateInput(input, sigdata); - nIn++; } - return true; + return SigningResult::PRIVATE_KEY_NOT_AVAILABLE; } bool CWallet::FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl coinControl) @@ -2886,25 +3024,9 @@ bool CWallet::CreateTransaction(interfaces::Chain::Lock& locked_chain, const std txNew.vin.push_back(CTxIn(coin.outpoint, CScript(), nSequence)); } - if (sign) - { - int nIn = 0; - for (const auto& coin : selected_coins) - { - const CScript& scriptPubKey = coin.txout.scriptPubKey; - SignatureData sigdata; - - std::unique_ptr<SigningProvider> provider = GetSigningProvider(scriptPubKey); - if (!provider || !ProduceSignature(*provider, MutableTransactionSignatureCreator(&txNew, nIn, coin.txout.nValue, SIGHASH_ALL), scriptPubKey, sigdata)) - { - strFailReason = _("Signing transaction failed").translated; - return false; - } else { - UpdateInput(txNew.vin.at(nIn), sigdata); - } - - nIn++; - } + if (sign && !SignTransaction(txNew)) { + strFailReason = _("Signing transaction failed").translated; + return false; } // Return the constructed transaction data. @@ -4155,6 +4277,17 @@ ScriptPubKeyMan* CWallet::GetScriptPubKeyMan(const OutputType& type, bool intern return it->second; } +std::set<ScriptPubKeyMan*> CWallet::GetScriptPubKeyMans(const CScript& script, SignatureData& sigdata) const +{ + std::set<ScriptPubKeyMan*> spk_mans; + for (const auto& spk_man_pair : m_spk_managers) { + if (spk_man_pair.second->CanProvide(script, sigdata)) { + spk_mans.insert(spk_man_pair.second.get()); + } + } + return spk_mans; +} + ScriptPubKeyMan* CWallet::GetScriptPubKeyMan(const CScript& script) const { SignatureData sigdata; @@ -4174,17 +4307,17 @@ ScriptPubKeyMan* CWallet::GetScriptPubKeyMan(const uint256& id) const return nullptr; } -std::unique_ptr<SigningProvider> CWallet::GetSigningProvider(const CScript& script) const +std::unique_ptr<SigningProvider> CWallet::GetSolvingProvider(const CScript& script) const { SignatureData sigdata; - return GetSigningProvider(script, sigdata); + return GetSolvingProvider(script, sigdata); } -std::unique_ptr<SigningProvider> CWallet::GetSigningProvider(const CScript& script, SignatureData& sigdata) const +std::unique_ptr<SigningProvider> CWallet::GetSolvingProvider(const CScript& script, SignatureData& sigdata) const { for (const auto& spk_man_pair : m_spk_managers) { if (spk_man_pair.second->CanProvide(script, sigdata)) { - return spk_man_pair.second->GetSigningProvider(script); + return spk_man_pair.second->GetSolvingProvider(script); } } return nullptr; diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h index 3664a6787c..0c86a0c1e8 100644 --- a/src/wallet/wallet.h +++ b/src/wallet/wallet.h @@ -11,8 +11,10 @@ #include <interfaces/handler.h> #include <outputtype.h> #include <policy/feerate.h> +#include <psbt.h> #include <tinyformat.h> #include <ui_interface.h> +#include <util/message.h> #include <util/strencodings.h> #include <util/system.h> #include <validationinterface.h> @@ -916,7 +918,30 @@ public: * calling CreateTransaction(); */ bool FundTransaction(CMutableTransaction& tx, CAmount& nFeeRet, int& nChangePosInOut, std::string& strFailReason, bool lockUnspents, const std::set<int>& setSubtractFeeFromOutputs, CCoinControl); - bool SignTransaction(CMutableTransaction& tx) EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); + // Fetch the inputs and sign with SIGHASH_ALL. + bool SignTransaction(CMutableTransaction& tx) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet); + // Sign the tx given the input coins and sighash. + bool SignTransaction(CMutableTransaction& tx, const std::map<COutPoint, Coin>& coins, int sighash, std::map<int, std::string>& input_errors) const; + SigningResult SignMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) const; + + /** + * Fills out a PSBT with information from the wallet. Fills in UTXOs if we have + * them. Tries to sign if sign=true. Sets `complete` if the PSBT is now complete + * (i.e. has all required signatures or signature-parts, and is ready to + * finalize.) Sets `error` and returns false if something goes wrong. + * + * @param[in] psbtx PartiallySignedTransaction to fill in + * @param[out] complete indicates whether the PSBT is now complete + * @param[in] sighash_type the sighash type to use when signing (if PSBT does not specify) + * @param[in] sign whether to sign or not + * @param[in] bip32derivs whether to fill in bip32 derivation information if available + * return error + */ + TransactionError FillPSBT(PartiallySignedTransaction& psbtx, + bool& complete, + int sighash_type = 1 /* SIGHASH_ALL */, + bool sign = true, + bool bip32derivs = true) const; /** * Create a new transaction paying the recipients with a set of coins @@ -1153,9 +1178,12 @@ public: //! Get the ScriptPubKeyMan by id ScriptPubKeyMan* GetScriptPubKeyMan(const uint256& id) const; + //! Get all of the ScriptPubKeyMans for a script given additional information in sigdata (populated by e.g. a psbt) + std::set<ScriptPubKeyMan*> GetScriptPubKeyMans(const CScript& script, SignatureData& sigdata) const; + //! Get the SigningProvider for a script - std::unique_ptr<SigningProvider> GetSigningProvider(const CScript& script) const; - std::unique_ptr<SigningProvider> GetSigningProvider(const CScript& script, SignatureData& sigdata) const; + std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script) const; + std::unique_ptr<SigningProvider> GetSolvingProvider(const CScript& script, SignatureData& sigdata) const; //! Get the LegacyScriptPubKeyMan which is used for all types, internal, and external. LegacyScriptPubKeyMan* GetLegacyScriptPubKeyMan() const; |