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// Copyright (c) 2018-2021 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 <interfaces/wallet.h>
#include <consensus/amount.h>
#include <interfaces/chain.h>
#include <interfaces/handler.h>
#include <policy/fees.h>
#include <primitives/transaction.h>
#include <rpc/server.h>
#include <script/standard.h>
#include <support/allocators/secure.h>
#include <sync.h>
#include <uint256.h>
#include <util/check.h>
#include <util/system.h>
#include <util/translation.h>
#include <util/ui_change_type.h>
#include <wallet/context.h>
#include <wallet/feebumper.h>
#include <wallet/fees.h>
#include <wallet/ismine.h>
#include <wallet/load.h>
#include <wallet/receive.h>
#include <wallet/rpc/wallet.h>
#include <wallet/spend.h>
#include <wallet/wallet.h>
#include <memory>
#include <string>
#include <utility>
#include <vector>
using interfaces::Chain;
using interfaces::FoundBlock;
using interfaces::Handler;
using interfaces::MakeHandler;
using interfaces::Wallet;
using interfaces::WalletAddress;
using interfaces::WalletBalances;
using interfaces::WalletLoader;
using interfaces::WalletOrderForm;
using interfaces::WalletTx;
using interfaces::WalletTxOut;
using interfaces::WalletTxStatus;
using interfaces::WalletValueMap;
namespace wallet {
namespace {
//! Construct wallet tx struct.
WalletTx MakeWalletTx(CWallet& wallet, const CWalletTx& wtx)
{
LOCK(wallet.cs_wallet);
WalletTx result;
result.tx = wtx.tx;
result.txin_is_mine.reserve(wtx.tx->vin.size());
for (const auto& txin : wtx.tx->vin) {
result.txin_is_mine.emplace_back(InputIsMine(wallet, txin));
}
result.txout_is_mine.reserve(wtx.tx->vout.size());
result.txout_address.reserve(wtx.tx->vout.size());
result.txout_address_is_mine.reserve(wtx.tx->vout.size());
for (const auto& txout : wtx.tx->vout) {
result.txout_is_mine.emplace_back(wallet.IsMine(txout));
result.txout_address.emplace_back();
result.txout_address_is_mine.emplace_back(ExtractDestination(txout.scriptPubKey, result.txout_address.back()) ?
wallet.IsMine(result.txout_address.back()) :
ISMINE_NO);
}
result.credit = CachedTxGetCredit(wallet, wtx, ISMINE_ALL);
result.debit = CachedTxGetDebit(wallet, wtx, ISMINE_ALL);
result.change = CachedTxGetChange(wallet, wtx);
result.time = wtx.GetTxTime();
result.value_map = wtx.mapValue;
result.is_coinbase = wtx.IsCoinBase();
return result;
}
//! Construct wallet tx status struct.
WalletTxStatus MakeWalletTxStatus(const CWallet& wallet, const CWalletTx& wtx)
EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
{
AssertLockHeld(wallet.cs_wallet);
WalletTxStatus result;
result.block_height =
wtx.state<TxStateConfirmed>() ? wtx.state<TxStateConfirmed>()->confirmed_block_height :
wtx.state<TxStateConflicted>() ? wtx.state<TxStateConflicted>()->conflicting_block_height :
std::numeric_limits<int>::max();
result.blocks_to_maturity = wallet.GetTxBlocksToMaturity(wtx);
result.depth_in_main_chain = wallet.GetTxDepthInMainChain(wtx);
result.time_received = wtx.nTimeReceived;
result.lock_time = wtx.tx->nLockTime;
result.is_trusted = CachedTxIsTrusted(wallet, wtx);
result.is_abandoned = wtx.isAbandoned();
result.is_coinbase = wtx.IsCoinBase();
result.is_in_main_chain = wallet.IsTxInMainChain(wtx);
return result;
}
//! Construct wallet TxOut struct.
WalletTxOut MakeWalletTxOut(const CWallet& wallet,
const CWalletTx& wtx,
int n,
int depth) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
{
WalletTxOut result;
result.txout = wtx.tx->vout[n];
result.time = wtx.GetTxTime();
result.depth_in_main_chain = depth;
result.is_spent = wallet.IsSpent(COutPoint(wtx.GetHash(), n));
return result;
}
WalletTxOut MakeWalletTxOut(const CWallet& wallet,
const COutput& output) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
{
WalletTxOut result;
result.txout = output.txout;
result.time = output.time;
result.depth_in_main_chain = output.depth;
result.is_spent = wallet.IsSpent(output.outpoint);
return result;
}
class WalletImpl : public Wallet
{
public:
explicit WalletImpl(WalletContext& context, const std::shared_ptr<CWallet>& wallet) : m_context(context), m_wallet(wallet) {}
bool encryptWallet(const SecureString& wallet_passphrase) override
{
return m_wallet->EncryptWallet(wallet_passphrase);
}
bool isCrypted() override { return m_wallet->IsCrypted(); }
bool lock() override { return m_wallet->Lock(); }
bool unlock(const SecureString& wallet_passphrase) override { return m_wallet->Unlock(wallet_passphrase); }
bool isLocked() override { return m_wallet->IsLocked(); }
bool changeWalletPassphrase(const SecureString& old_wallet_passphrase,
const SecureString& new_wallet_passphrase) override
{
return m_wallet->ChangeWalletPassphrase(old_wallet_passphrase, new_wallet_passphrase);
}
void abortRescan() override { m_wallet->AbortRescan(); }
bool backupWallet(const std::string& filename) override { return m_wallet->BackupWallet(filename); }
std::string getWalletName() override { return m_wallet->GetName(); }
BResult<CTxDestination> getNewDestination(const OutputType type, const std::string label) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->GetNewDestination(type, label);
}
bool getPubKey(const CScript& script, const CKeyID& address, CPubKey& pub_key) override
{
std::unique_ptr<SigningProvider> provider = m_wallet->GetSolvingProvider(script);
if (provider) {
return provider->GetPubKey(address, pub_key);
}
return false;
}
SigningResult signMessage(const std::string& message, const PKHash& pkhash, std::string& str_sig) override
{
return m_wallet->SignMessage(message, pkhash, str_sig);
}
bool isSpendable(const CTxDestination& dest) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->IsMine(dest) & ISMINE_SPENDABLE;
}
bool haveWatchOnly() override
{
auto spk_man = m_wallet->GetLegacyScriptPubKeyMan();
if (spk_man) {
return spk_man->HaveWatchOnly();
}
return false;
};
bool setAddressBook(const CTxDestination& dest, const std::string& name, const std::string& purpose) override
{
return m_wallet->SetAddressBook(dest, name, purpose);
}
bool delAddressBook(const CTxDestination& dest) override
{
return m_wallet->DelAddressBook(dest);
}
bool getAddress(const CTxDestination& dest,
std::string* name,
isminetype* is_mine,
std::string* purpose) override
{
LOCK(m_wallet->cs_wallet);
const auto& entry = m_wallet->FindAddressBookEntry(dest, /*allow_change=*/false);
if (!entry) return false; // addr not found
if (name) {
*name = entry->GetLabel();
}
if (is_mine) {
*is_mine = m_wallet->IsMine(dest);
}
if (purpose) {
*purpose = entry->purpose;
}
return true;
}
std::vector<WalletAddress> getAddresses() const override
{
LOCK(m_wallet->cs_wallet);
std::vector<WalletAddress> result;
m_wallet->ForEachAddrBookEntry([&](const CTxDestination& dest, const std::string& label, const std::string& purpose, bool is_change) EXCLUSIVE_LOCKS_REQUIRED(m_wallet->cs_wallet) {
if (is_change) return;
result.emplace_back(dest, m_wallet->IsMine(dest), label, purpose);
});
return result;
}
std::vector<std::string> getAddressReceiveRequests() override {
LOCK(m_wallet->cs_wallet);
return m_wallet->GetAddressReceiveRequests();
}
bool setAddressReceiveRequest(const CTxDestination& dest, const std::string& id, const std::string& value) override {
LOCK(m_wallet->cs_wallet);
WalletBatch batch{m_wallet->GetDatabase()};
return m_wallet->SetAddressReceiveRequest(batch, dest, id, value);
}
bool displayAddress(const CTxDestination& dest) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->DisplayAddress(dest);
}
bool lockCoin(const COutPoint& output, const bool write_to_db) override
{
LOCK(m_wallet->cs_wallet);
std::unique_ptr<WalletBatch> batch = write_to_db ? std::make_unique<WalletBatch>(m_wallet->GetDatabase()) : nullptr;
return m_wallet->LockCoin(output, batch.get());
}
bool unlockCoin(const COutPoint& output) override
{
LOCK(m_wallet->cs_wallet);
std::unique_ptr<WalletBatch> batch = std::make_unique<WalletBatch>(m_wallet->GetDatabase());
return m_wallet->UnlockCoin(output, batch.get());
}
bool isLockedCoin(const COutPoint& output) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->IsLockedCoin(output);
}
void listLockedCoins(std::vector<COutPoint>& outputs) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->ListLockedCoins(outputs);
}
BResult<CTransactionRef> createTransaction(const std::vector<CRecipient>& recipients,
const CCoinControl& coin_control,
bool sign,
int& change_pos,
CAmount& fee) override
{
LOCK(m_wallet->cs_wallet);
const auto& res = CreateTransaction(*m_wallet, recipients, change_pos,
coin_control, sign);
if (!res) return res.GetError();
const auto& txr = res.GetObj();
fee = txr.fee;
change_pos = txr.change_pos;
return txr.tx;
}
void commitTransaction(CTransactionRef tx,
WalletValueMap value_map,
WalletOrderForm order_form) override
{
LOCK(m_wallet->cs_wallet);
m_wallet->CommitTransaction(std::move(tx), std::move(value_map), std::move(order_form));
}
bool transactionCanBeAbandoned(const uint256& txid) override { return m_wallet->TransactionCanBeAbandoned(txid); }
bool abandonTransaction(const uint256& txid) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->AbandonTransaction(txid);
}
bool transactionCanBeBumped(const uint256& txid) override
{
return feebumper::TransactionCanBeBumped(*m_wallet.get(), txid);
}
bool createBumpTransaction(const uint256& txid,
const CCoinControl& coin_control,
std::vector<bilingual_str>& errors,
CAmount& old_fee,
CAmount& new_fee,
CMutableTransaction& mtx) override
{
return feebumper::CreateRateBumpTransaction(*m_wallet.get(), txid, coin_control, errors, old_fee, new_fee, mtx) == feebumper::Result::OK;
}
bool signBumpTransaction(CMutableTransaction& mtx) override { return feebumper::SignTransaction(*m_wallet.get(), mtx); }
bool commitBumpTransaction(const uint256& txid,
CMutableTransaction&& mtx,
std::vector<bilingual_str>& errors,
uint256& bumped_txid) override
{
return feebumper::CommitTransaction(*m_wallet.get(), txid, std::move(mtx), errors, bumped_txid) ==
feebumper::Result::OK;
}
CTransactionRef getTx(const uint256& txid) override
{
LOCK(m_wallet->cs_wallet);
auto mi = m_wallet->mapWallet.find(txid);
if (mi != m_wallet->mapWallet.end()) {
return mi->second.tx;
}
return {};
}
WalletTx getWalletTx(const uint256& txid) override
{
LOCK(m_wallet->cs_wallet);
auto mi = m_wallet->mapWallet.find(txid);
if (mi != m_wallet->mapWallet.end()) {
return MakeWalletTx(*m_wallet, mi->second);
}
return {};
}
std::vector<WalletTx> getWalletTxs() override
{
LOCK(m_wallet->cs_wallet);
std::vector<WalletTx> result;
result.reserve(m_wallet->mapWallet.size());
for (const auto& entry : m_wallet->mapWallet) {
result.emplace_back(MakeWalletTx(*m_wallet, entry.second));
}
return result;
}
bool tryGetTxStatus(const uint256& txid,
interfaces::WalletTxStatus& tx_status,
int& num_blocks,
int64_t& block_time) override
{
TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
if (!locked_wallet) {
return false;
}
auto mi = m_wallet->mapWallet.find(txid);
if (mi == m_wallet->mapWallet.end()) {
return false;
}
num_blocks = m_wallet->GetLastBlockHeight();
block_time = -1;
CHECK_NONFATAL(m_wallet->chain().findBlock(m_wallet->GetLastBlockHash(), FoundBlock().time(block_time)));
tx_status = MakeWalletTxStatus(*m_wallet, mi->second);
return true;
}
WalletTx getWalletTxDetails(const uint256& txid,
WalletTxStatus& tx_status,
WalletOrderForm& order_form,
bool& in_mempool,
int& num_blocks) override
{
LOCK(m_wallet->cs_wallet);
auto mi = m_wallet->mapWallet.find(txid);
if (mi != m_wallet->mapWallet.end()) {
num_blocks = m_wallet->GetLastBlockHeight();
in_mempool = mi->second.InMempool();
order_form = mi->second.vOrderForm;
tx_status = MakeWalletTxStatus(*m_wallet, mi->second);
return MakeWalletTx(*m_wallet, mi->second);
}
return {};
}
TransactionError fillPSBT(int sighash_type,
bool sign,
bool bip32derivs,
size_t* n_signed,
PartiallySignedTransaction& psbtx,
bool& complete) override
{
return m_wallet->FillPSBT(psbtx, complete, sighash_type, sign, bip32derivs, n_signed);
}
WalletBalances getBalances() override
{
const auto bal = GetBalance(*m_wallet);
WalletBalances result;
result.balance = bal.m_mine_trusted;
result.unconfirmed_balance = bal.m_mine_untrusted_pending;
result.immature_balance = bal.m_mine_immature;
result.have_watch_only = haveWatchOnly();
if (result.have_watch_only) {
result.watch_only_balance = bal.m_watchonly_trusted;
result.unconfirmed_watch_only_balance = bal.m_watchonly_untrusted_pending;
result.immature_watch_only_balance = bal.m_watchonly_immature;
}
return result;
}
bool tryGetBalances(WalletBalances& balances, uint256& block_hash) override
{
TRY_LOCK(m_wallet->cs_wallet, locked_wallet);
if (!locked_wallet) {
return false;
}
block_hash = m_wallet->GetLastBlockHash();
balances = getBalances();
return true;
}
CAmount getBalance() override { return GetBalance(*m_wallet).m_mine_trusted; }
CAmount getAvailableBalance(const CCoinControl& coin_control) override
{
return GetAvailableBalance(*m_wallet, &coin_control);
}
isminetype txinIsMine(const CTxIn& txin) override
{
LOCK(m_wallet->cs_wallet);
return InputIsMine(*m_wallet, txin);
}
isminetype txoutIsMine(const CTxOut& txout) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->IsMine(txout);
}
CAmount getDebit(const CTxIn& txin, isminefilter filter) override
{
LOCK(m_wallet->cs_wallet);
return m_wallet->GetDebit(txin, filter);
}
CAmount getCredit(const CTxOut& txout, isminefilter filter) override
{
LOCK(m_wallet->cs_wallet);
return OutputGetCredit(*m_wallet, txout, filter);
}
CoinsList listCoins() override
{
LOCK(m_wallet->cs_wallet);
CoinsList result;
for (const auto& entry : ListCoins(*m_wallet)) {
auto& group = result[entry.first];
for (const auto& coin : entry.second) {
group.emplace_back(coin.outpoint,
MakeWalletTxOut(*m_wallet, coin));
}
}
return result;
}
std::vector<WalletTxOut> getCoins(const std::vector<COutPoint>& outputs) override
{
LOCK(m_wallet->cs_wallet);
std::vector<WalletTxOut> result;
result.reserve(outputs.size());
for (const auto& output : outputs) {
result.emplace_back();
auto it = m_wallet->mapWallet.find(output.hash);
if (it != m_wallet->mapWallet.end()) {
int depth = m_wallet->GetTxDepthInMainChain(it->second);
if (depth >= 0) {
result.back() = MakeWalletTxOut(*m_wallet, it->second, output.n, depth);
}
}
}
return result;
}
CAmount getRequiredFee(unsigned int tx_bytes) override { return GetRequiredFee(*m_wallet, tx_bytes); }
CAmount getMinimumFee(unsigned int tx_bytes,
const CCoinControl& coin_control,
int* returned_target,
FeeReason* reason) override
{
FeeCalculation fee_calc;
CAmount result;
result = GetMinimumFee(*m_wallet, tx_bytes, coin_control, &fee_calc);
if (returned_target) *returned_target = fee_calc.returnedTarget;
if (reason) *reason = fee_calc.reason;
return result;
}
unsigned int getConfirmTarget() override { return m_wallet->m_confirm_target; }
bool hdEnabled() override { return m_wallet->IsHDEnabled(); }
bool canGetAddresses() override { return m_wallet->CanGetAddresses(); }
bool hasExternalSigner() override { return m_wallet->IsWalletFlagSet(WALLET_FLAG_EXTERNAL_SIGNER); }
bool privateKeysDisabled() override { return m_wallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS); }
bool taprootEnabled() override {
if (m_wallet->IsLegacy()) return false;
auto spk_man = m_wallet->GetScriptPubKeyMan(OutputType::BECH32M, /*internal=*/false);
return spk_man != nullptr;
}
OutputType getDefaultAddressType() override { return m_wallet->m_default_address_type; }
CAmount getDefaultMaxTxFee() override { return m_wallet->m_default_max_tx_fee; }
void remove() override
{
RemoveWallet(m_context, m_wallet, false /* load_on_start */);
}
bool isLegacy() override { return m_wallet->IsLegacy(); }
std::unique_ptr<Handler> handleUnload(UnloadFn fn) override
{
return MakeHandler(m_wallet->NotifyUnload.connect(fn));
}
std::unique_ptr<Handler> handleShowProgress(ShowProgressFn fn) override
{
return MakeHandler(m_wallet->ShowProgress.connect(fn));
}
std::unique_ptr<Handler> handleStatusChanged(StatusChangedFn fn) override
{
return MakeHandler(m_wallet->NotifyStatusChanged.connect([fn](CWallet*) { fn(); }));
}
std::unique_ptr<Handler> handleAddressBookChanged(AddressBookChangedFn fn) override
{
return MakeHandler(m_wallet->NotifyAddressBookChanged.connect(
[fn](const CTxDestination& address, const std::string& label, bool is_mine,
const std::string& purpose, ChangeType status) { fn(address, label, is_mine, purpose, status); }));
}
std::unique_ptr<Handler> handleTransactionChanged(TransactionChangedFn fn) override
{
return MakeHandler(m_wallet->NotifyTransactionChanged.connect(
[fn](const uint256& txid, ChangeType status) { fn(txid, status); }));
}
std::unique_ptr<Handler> handleWatchOnlyChanged(WatchOnlyChangedFn fn) override
{
return MakeHandler(m_wallet->NotifyWatchonlyChanged.connect(fn));
}
std::unique_ptr<Handler> handleCanGetAddressesChanged(CanGetAddressesChangedFn fn) override
{
return MakeHandler(m_wallet->NotifyCanGetAddressesChanged.connect(fn));
}
CWallet* wallet() override { return m_wallet.get(); }
WalletContext& m_context;
std::shared_ptr<CWallet> m_wallet;
};
class WalletLoaderImpl : public WalletLoader
{
public:
WalletLoaderImpl(Chain& chain, ArgsManager& args)
{
m_context.chain = &chain;
m_context.args = &args;
}
~WalletLoaderImpl() override { UnloadWallets(m_context); }
//! ChainClient methods
void registerRpcs() override
{
for (const CRPCCommand& command : GetWalletRPCCommands()) {
m_rpc_commands.emplace_back(command.category, command.name, [this, &command](const JSONRPCRequest& request, UniValue& result, bool last_handler) {
JSONRPCRequest wallet_request = request;
wallet_request.context = &m_context;
return command.actor(wallet_request, result, last_handler);
}, command.argNames, command.unique_id);
m_rpc_handlers.emplace_back(m_context.chain->handleRpc(m_rpc_commands.back()));
}
}
bool verify() override { return VerifyWallets(m_context); }
bool load() override { return LoadWallets(m_context); }
void start(CScheduler& scheduler) override { return StartWallets(m_context, scheduler); }
void flush() override { return FlushWallets(m_context); }
void stop() override { return StopWallets(m_context); }
void setMockTime(int64_t time) override { return SetMockTime(time); }
//! WalletLoader methods
std::unique_ptr<Wallet> createWallet(const std::string& name, const SecureString& passphrase, uint64_t wallet_creation_flags, bilingual_str& error, std::vector<bilingual_str>& warnings) override
{
std::shared_ptr<CWallet> wallet;
DatabaseOptions options;
DatabaseStatus status;
ReadDatabaseArgs(*m_context.args, options);
options.require_create = true;
options.create_flags = wallet_creation_flags;
options.create_passphrase = passphrase;
return MakeWallet(m_context, CreateWallet(m_context, name, true /* load_on_start */, options, status, error, warnings));
}
std::unique_ptr<Wallet> loadWallet(const std::string& name, bilingual_str& error, std::vector<bilingual_str>& warnings) override
{
DatabaseOptions options;
DatabaseStatus status;
ReadDatabaseArgs(*m_context.args, options);
options.require_existing = true;
return MakeWallet(m_context, LoadWallet(m_context, name, true /* load_on_start */, options, status, error, warnings));
}
std::unique_ptr<Wallet> restoreWallet(const fs::path& backup_file, const std::string& wallet_name, bilingual_str& error, std::vector<bilingual_str>& warnings) override
{
DatabaseStatus status;
return MakeWallet(m_context, RestoreWallet(m_context, backup_file, wallet_name, /*load_on_start=*/true, status, error, warnings));
}
std::string getWalletDir() override
{
return fs::PathToString(GetWalletDir());
}
std::vector<std::string> listWalletDir() override
{
std::vector<std::string> paths;
for (auto& path : ListDatabases(GetWalletDir())) {
paths.push_back(fs::PathToString(path));
}
return paths;
}
std::vector<std::unique_ptr<Wallet>> getWallets() override
{
std::vector<std::unique_ptr<Wallet>> wallets;
for (const auto& wallet : GetWallets(m_context)) {
wallets.emplace_back(MakeWallet(m_context, wallet));
}
return wallets;
}
std::unique_ptr<Handler> handleLoadWallet(LoadWalletFn fn) override
{
return HandleLoadWallet(m_context, std::move(fn));
}
WalletContext* context() override { return &m_context; }
WalletContext m_context;
const std::vector<std::string> m_wallet_filenames;
std::vector<std::unique_ptr<Handler>> m_rpc_handlers;
std::list<CRPCCommand> m_rpc_commands;
};
} // namespace
} // namespace wallet
namespace interfaces {
std::unique_ptr<Wallet> MakeWallet(wallet::WalletContext& context, const std::shared_ptr<wallet::CWallet>& wallet) { return wallet ? std::make_unique<wallet::WalletImpl>(context, wallet) : nullptr; }
std::unique_ptr<WalletLoader> MakeWalletLoader(Chain& chain, ArgsManager& args)
{
return std::make_unique<wallet::WalletLoaderImpl>(chain, args);
}
} // namespace interfaces
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