Bitcoin Core  27.99.0
P2P Digital Currency
fees.cpp
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1 // Copyright (c) 2022 The Bitcoin Core developers
2 // Distributed under the MIT software license, see the accompanying
3 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
4 
6 #include <test/fuzz/fuzz.h>
7 #include <test/fuzz/util.h>
9 #include <wallet/coincontrol.h>
10 #include <wallet/fees.h>
11 #include <wallet/wallet.h>
12 #include <wallet/test/util.h>
13 #include <validation.h>
14 
15 namespace wallet {
16 namespace {
17 const TestingSetup* g_setup;
18 static std::unique_ptr<CWallet> g_wallet_ptr;
19 
20 void initialize_setup()
21 {
22  static const auto testing_setup = MakeNoLogFileContext<const TestingSetup>();
23  g_setup = testing_setup.get();
24  const auto& node{g_setup->m_node};
25  g_wallet_ptr = std::make_unique<CWallet>(node.chain.get(), "", CreateMockableWalletDatabase());
26 }
27 
28 FUZZ_TARGET(wallet_fees, .init = initialize_setup)
29 {
30  FuzzedDataProvider fuzzed_data_provider{buffer.data(), buffer.size()};
31  const auto& node{g_setup->m_node};
32  Chainstate* chainstate = &node.chainman->ActiveChainstate();
33  CWallet& wallet = *g_wallet_ptr;
34  {
35  LOCK(wallet.cs_wallet);
36  wallet.SetLastBlockProcessed(chainstate->m_chain.Height(), chainstate->m_chain.Tip()->GetBlockHash());
37  }
38 
39  if (fuzzed_data_provider.ConsumeBool()) {
40  wallet.m_fallback_fee = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
41  }
42 
43  if (fuzzed_data_provider.ConsumeBool()) {
44  wallet.m_discard_rate = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
45  }
46  (void)GetDiscardRate(wallet);
47 
48  const auto tx_bytes{fuzzed_data_provider.ConsumeIntegral<unsigned int>()};
49 
50  if (fuzzed_data_provider.ConsumeBool()) {
51  wallet.m_pay_tx_fee = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
52  wallet.m_min_fee = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
53  }
54 
55  (void)GetRequiredFee(wallet, tx_bytes);
57 
58  CCoinControl coin_control;
59  if (fuzzed_data_provider.ConsumeBool()) {
60  coin_control.m_feerate = CFeeRate{ConsumeMoney(fuzzed_data_provider, /*max=*/COIN)};
61  }
62  if (fuzzed_data_provider.ConsumeBool()) {
63  coin_control.m_confirm_target = fuzzed_data_provider.ConsumeIntegralInRange<unsigned int>(0, 999'000);
64  }
65  if (fuzzed_data_provider.ConsumeBool()) {
66  coin_control.m_fee_mode = fuzzed_data_provider.ConsumeBool() ? FeeEstimateMode::CONSERVATIVE : FeeEstimateMode::ECONOMICAL;
67  }
68 
69  FeeCalculation fee_calculation;
70  FeeCalculation* maybe_fee_calculation{fuzzed_data_provider.ConsumeBool() ? nullptr : &fee_calculation};
71  (void)GetMinimumFeeRate(wallet, coin_control, maybe_fee_calculation);
72  (void)GetMinimumFee(wallet, tx_bytes, coin_control, maybe_fee_calculation);
73 }
74 } // namespace
75 } // namespace wallet
static constexpr CAmount COIN
The amount of satoshis in one BTC.
Definition: amount.h:15
uint256 GetBlockHash() const
Definition: chain.h:244
CBlockIndex * Tip() const
Returns the index entry for the tip of this chain, or nullptr if none.
Definition: chain.h:434
int Height() const
Return the maximal height in the chain.
Definition: chain.h:463
Fee rate in satoshis per kilovirtualbyte: CAmount / kvB.
Definition: feerate.h:33
Chainstate stores and provides an API to update our local knowledge of the current best chain.
Definition: validation.h:513
CChain m_chain
The current chain of blockheaders we consult and build on.
Definition: validation.h:593
@ CONSERVATIVE
Force estimateSmartFee to use conservative estimates.
@ ECONOMICAL
Force estimateSmartFee to use non-conservative estimates.
Definition: messages.h:20
CFeeRate GetRequiredFeeRate(const CWallet &wallet)
Return the minimum required feerate taking into account the minimum relay feerate and user set minimu...
Definition: fees.cpp:24
CAmount GetMinimumFee(const CWallet &wallet, unsigned int nTxBytes, const CCoinControl &coin_control, FeeCalculation *feeCalc)
Estimate the minimum fee considering user set parameters and the required fee.
Definition: fees.cpp:19
CFeeRate GetMinimumFeeRate(const CWallet &wallet, const CCoinControl &coin_control, FeeCalculation *feeCalc)
Estimate the minimum fee rate considering user set parameters and the required fee.
Definition: fees.cpp:29
FUZZ_TARGET(coin_grinder)
std::unique_ptr< WalletDatabase > CreateMockableWalletDatabase(MockableData records)
Definition: util.cpp:185
CFeeRate GetDiscardRate(const CWallet &wallet)
Return the maximum feerate for discarding change.
Definition: fees.cpp:84
CAmount GetRequiredFee(const CWallet &wallet, unsigned int nTxBytes)
Return the minimum required absolute fee for this size based on the required fee rate.
Definition: fees.cpp:13
node::NodeContext m_node
Definition: setup_common.h:62
Testing setup that configures a complete environment.
Definition: setup_common.h:91
#define LOCK(cs)
Definition: sync.h:257
CAmount ConsumeMoney(FuzzedDataProvider &fuzzed_data_provider, const std::optional< CAmount > &max) noexcept
Definition: util.cpp:29