Remove ::fRequireStandard global

src/init.cpp

@@ -1004,10 +1004,6 @@ bool AppInitParameterInteraction(const ArgsManager& args, bool use_syscall_sandb
         }
     }
 
-    fRequireStandard = !args.GetBoolArg("-acceptnonstdtxn", !chainparams.RequireStandard());
-    if (!chainparams.IsTestChain() && !fRequireStandard) {
-        return InitError(strprintf(Untranslated("acceptnonstdtxn is not currently supported for %s chain"), chainparams.NetworkIDString()));
-    }
     nBytesPerSigOp = args.GetIntArg("-bytespersigop", nBytesPerSigOp);
 
     if (!g_wallet_init_interface.ParameterInteraction()) return false;

src/kernel/mempool_options.h

@@ -33,6 +33,7 @@ struct MemPoolOptions {
     int check_ratio{0};
     int64_t max_size_bytes{DEFAULT_MAX_MEMPOOL_SIZE_MB * 1'000'000};
     std::chrono::seconds expiry{std::chrono::hours{DEFAULT_MEMPOOL_EXPIRY_HOURS}};
+    bool require_standard{true};
     bool full_rbf{DEFAULT_MEMPOOL_FULL_RBF};
     MemPoolLimits limits{};
 };

src/mempool_args.cpp

@@ -39,6 +39,11 @@ std::optional<bilingual_str> ApplyArgsManOptions(const ArgsManager& argsman, con
 
     if (auto hours = argsman.GetIntArg("-mempoolexpiry")) mempool_opts.expiry = std::chrono::hours{*hours};
 
+    mempool_opts.require_standard = !argsman.GetBoolArg("-acceptnonstdtxn", !chainparams.RequireStandard());
+    if (!chainparams.IsTestChain() && !mempool_opts.require_standard) {
+        return strprintf(Untranslated("acceptnonstdtxn is not currently supported for %s chain"), chainparams.NetworkIDString());
+    }
+
     mempool_opts.full_rbf = argsman.GetBoolArg("-mempoolfullrbf", mempool_opts.full_rbf);
 
     ApplyArgsManOptions(argsman, mempool_opts.limits);

src/test/fuzz/tx_pool.cpp

@@ -116,7 +116,7 @@ void MockTime(FuzzedDataProvider& fuzzed_data_provider, const CChainState& chain
     SetMockTime(time);
 }
 
-CTxMemPool MakeMempool(const NodeContext& node)
+CTxMemPool MakeMempool(FuzzedDataProvider& fuzzed_data_provider, const NodeContext& node)
 {
     // Take the default options for tests...
     CTxMemPool::Options mempool_opts{MemPoolOptionsForTest(node)};
@@ -124,6 +124,7 @@ CTxMemPool MakeMempool(const NodeContext& node)
     // ...override specific options for this specific fuzz suite
     mempool_opts.estimator = nullptr;
     mempool_opts.check_ratio = 1;
+    mempool_opts.require_standard = fuzzed_data_provider.ConsumeBool();
 
     // ...and construct a CTxMemPool from it
     return CTxMemPool{mempool_opts};
@@ -150,7 +151,7 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
     constexpr CAmount SUPPLY_TOTAL{COINBASE_MATURITY * 50 * COIN};
 
     SetMempoolConstraints(*node.args, fuzzed_data_provider);
-    CTxMemPool tx_pool_{MakeMempool(node)};
+    CTxMemPool tx_pool_{MakeMempool(fuzzed_data_provider, node)};
     MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(&tx_pool_);
 
     chainstate.SetMempool(&tx_pool);
@@ -237,7 +238,6 @@ FUZZ_TARGET_INIT(tx_pool_standard, initialize_tx_pool)
         auto txr = std::make_shared<TransactionsDelta>(removed, added);
         RegisterSharedValidationInterface(txr);
         const bool bypass_limits = fuzzed_data_provider.ConsumeBool();
-        ::fRequireStandard = fuzzed_data_provider.ConsumeBool();
 
         // Make sure ProcessNewPackage on one transaction works.
         // The result is not guaranteed to be the same as what is returned by ATMP.
@@ -325,7 +325,7 @@ FUZZ_TARGET_INIT(tx_pool, initialize_tx_pool)
     }
 
     SetMempoolConstraints(*node.args, fuzzed_data_provider);
-    CTxMemPool tx_pool_{MakeMempool(node)};
+    CTxMemPool tx_pool_{MakeMempool(fuzzed_data_provider, node)};
     MockedTxPool& tx_pool = *static_cast<MockedTxPool*>(&tx_pool_);
 
     LIMITED_WHILE(fuzzed_data_provider.ConsumeBool(), 300)
@@ -348,7 +348,6 @@ FUZZ_TARGET_INIT(tx_pool, initialize_tx_pool)
 
         const auto tx = MakeTransactionRef(mut_tx);
         const bool bypass_limits = fuzzed_data_provider.ConsumeBool();
-        ::fRequireStandard = fuzzed_data_provider.ConsumeBool();
         const auto res = WITH_LOCK(::cs_main, return AcceptToMemoryPool(chainstate, tx, GetTime(), bypass_limits, /*test_accept=*/false));
         const bool accepted = res.m_result_type == MempoolAcceptResult::ResultType::VALID;
         if (accepted) {

src/txmempool.cpp

@@ -458,6 +458,7 @@ CTxMemPool::CTxMemPool(const Options& opts)
       minerPolicyEstimator{opts.estimator},
       m_max_size_bytes{opts.max_size_bytes},
       m_expiry{opts.expiry},
+      m_require_standard{opts.require_standard},
       m_full_rbf{opts.full_rbf},
       m_limits{opts.limits}
 {

src/txmempool.h

@@ -568,6 +568,7 @@ public:
 
     const int64_t m_max_size_bytes;
     const std::chrono::seconds m_expiry;
+    const bool m_require_standard;
     const bool m_full_rbf;
 
     using Limits = kernel::MemPoolLimits;

src/validation.cpp

@@ -124,7 +124,6 @@ GlobalMutex g_best_block_mutex;
 std::condition_variable g_best_block_cv;
 uint256 g_best_block;
 bool g_parallel_script_checks{false};
-bool fRequireStandard = true;
 bool fCheckBlockIndex = false;
 bool fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED;
 int64_t nMaxTipAge = DEFAULT_MAX_TIP_AGE;
@@ -700,8 +699,9 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
 
     // Rather not work on nonstandard transactions (unless -testnet/-regtest)
     std::string reason;
-    if (fRequireStandard && !IsStandardTx(tx, reason))
+    if (m_pool.m_require_standard && !IsStandardTx(tx, reason)) {
         return state.Invalid(TxValidationResult::TX_NOT_STANDARD, reason);
+    }
 
     // Do not work on transactions that are too small.
     // A transaction with 1 segwit input and 1 P2WPHK output has non-witness size of 82 bytes.
@@ -807,13 +807,14 @@ bool MemPoolAccept::PreChecks(ATMPArgs& args, Workspace& ws)
         return false; // state filled in by CheckTxInputs
     }
 
-    if (fRequireStandard && !AreInputsStandard(tx, m_view)) {
+    if (m_pool.m_require_standard && !AreInputsStandard(tx, m_view)) {
         return state.Invalid(TxValidationResult::TX_INPUTS_NOT_STANDARD, "bad-txns-nonstandard-inputs");
     }
 
     // Check for non-standard witnesses.
-    if (tx.HasWitness() && fRequireStandard && !IsWitnessStandard(tx, m_view))
+    if (tx.HasWitness() && m_pool.m_require_standard && !IsWitnessStandard(tx, m_view)) {
         return state.Invalid(TxValidationResult::TX_WITNESS_MUTATED, "bad-witness-nonstandard");
+    }
 
     int64_t nSigOpsCost = GetTransactionSigOpCost(tx, m_view, STANDARD_SCRIPT_VERIFY_FLAGS);
 

src/validation.h

@@ -100,7 +100,6 @@ extern uint256 g_best_block;
  * False indicates all script checking is done on the main threadMessageHandler thread.
  */
 extern bool g_parallel_script_checks;
-extern bool fRequireStandard;
 extern bool fCheckBlockIndex;
 extern bool fCheckpointsEnabled;
 /** If the tip is older than this (in seconds), the node is considered to be in initial block download. */

test/functional/p2p_segwit.py

@@ -245,7 +245,7 @@ class SegWitTest(BitcoinTestFramework):
         self.test_node = self.nodes[0].add_p2p_connection(TestP2PConn(), services=P2P_SERVICES)
         # self.old_node sets only NODE_NETWORK
         self.old_node = self.nodes[0].add_p2p_connection(TestP2PConn(), services=NODE_NETWORK)
-        # self.std_node is for testing node1 (fRequireStandard=true)
+        # self.std_node is for testing node1 (requires standard txs)
         self.std_node = self.nodes[1].add_p2p_connection(TestP2PConn(), services=P2P_SERVICES)
         # self.std_wtx_node is for testing node1 with wtxid relay
         self.std_wtx_node = self.nodes[1].add_p2p_connection(TestP2PConn(wtxidrelay=True), services=P2P_SERVICES)
@@ -1382,7 +1382,7 @@ class SegWitTest(BitcoinTestFramework):
         tx3.vout.append(CTxOut(total_value - 1000, script_pubkey))
         tx3.rehash()
 
-        # First we test this transaction against fRequireStandard=true node
+        # First we test this transaction against std_node
         # making sure the txid is added to the reject filter
         self.std_node.announce_tx_and_wait_for_getdata(tx3)
         test_transaction_acceptance(self.nodes[1], self.std_node, tx3, with_witness=True, accepted=False, reason="bad-txns-nonstandard-inputs")
@@ -1390,7 +1390,7 @@ class SegWitTest(BitcoinTestFramework):
         self.std_node.announce_tx_and_wait_for_getdata(tx3, success=False)
 
         # Spending a higher version witness output is not allowed by policy,
-        # even with fRequireStandard=false.
+        # even with the node that accepts non-standard txs.
         test_transaction_acceptance(self.nodes[0], self.test_node, tx3, with_witness=True, accepted=False, reason="reserved for soft-fork upgrades")
 
         # Building a block with the transaction must be valid, however.