merge bitcoin#15638: Pull wallet code out of libbitcoin_server (#4560)

* merge 15638: Move CheckTransaction from lib_server to lib_consensus

* merge 15638: Move policy settings to new src/policy/settings unit

* merge 15638: Move rpc utility methods to rpc/util

* merge 15638: Move rpc rawtransaction util functions to rpc/rawtransaction_util.cpp

* merge 15638: Move several units into common libraries

* merge 15638: Move wallet load functions to wallet/load unit

* merge 15638: Document src subdirectories and different libraries

* [build] Add several util units (cleanup)

* build: resolve missing declarations by re-specifying headers

src/Makefile.am

@@ -158,6 +158,7 @@ BITCOIN_CORE_H = \
   compat/sanity.h \
   compressor.h \
   consensus/consensus.h \
+  consensus/tx_check.h \
   consensus/tx_verify.h \
   core_io.h \
   core_memusage.h \
@@ -241,6 +242,7 @@ BITCOIN_CORE_H = \
   policy/feerate.h \
   policy/fees.h \
   policy/policy.h \
+  policy/settings.h \
   pow.h \
   protocol.h \
   psbt.h \
@@ -251,7 +253,7 @@ BITCOIN_CORE_H = \
   rpc/mining.h \
   rpc/protocol.h \
   rpc/server.h \
-  rpc/rawtransaction.h \
+  rpc/rawtransaction_util.h \
   rpc/register.h \
   rpc/util.h \
   saltedhasher.h \
@@ -309,6 +311,7 @@ BITCOIN_CORE_H = \
   wallet/crypter.h \
   wallet/db.h \
   wallet/fees.h \
+  wallet/load.h \
   wallet/psbtwallet.h \
   wallet/rpcwallet.h \
   wallet/wallet.h \
@@ -331,6 +334,9 @@ obj/build.h: FORCE
 libdash_util_a-clientversion.$(OBJEXT): obj/build.h
 
 # server: shared between dashd and dash-qt
+# Contains code accessing mempool and chain state that is meant to be separated
+# from wallet and gui code (see node/README.md). Shared code should go in
+# libdash_common or libdash_util libraries, instead.
 libdash_server_a_CPPFLAGS = $(AM_CPPFLAGS) $(BITCOIN_INCLUDES) $(MINIUPNPC_CPPFLAGS) $(EVENT_CFLAGS) $(EVENT_PTHREADS_CFLAGS)
 libdash_server_a_CXXFLAGS = $(AM_CXXFLAGS) $(PIE_FLAGS)
 libdash_server_a_SOURCES = \
@@ -338,7 +344,6 @@ libdash_server_a_SOURCES = \
   addrman.cpp \
   banman.cpp \
   batchedlogger.cpp \
-  bloom.cpp \
   blockencodings.cpp \
   blockfilter.cpp \
   chain.cpp \
@@ -361,7 +366,6 @@ libdash_server_a_SOURCES = \
   index/blockfilterindex.cpp \
   index/txindex.cpp \
   interfaces/chain.cpp \
-  interfaces/handler.cpp \
   interfaces/node.cpp \
   init.cpp \
   dbwrapper.cpp \
@@ -389,7 +393,6 @@ libdash_server_a_SOURCES = \
   masternode/payments.cpp \
   masternode/sync.cpp \
   masternode/utils.cpp \
-  merkleblock.cpp \
   messagesigner.cpp \
   miner.cpp \
   net.cpp \
@@ -401,6 +404,7 @@ libdash_server_a_SOURCES = \
   noui.cpp \
   policy/fees.cpp \
   policy/policy.cpp \
+  policy/settings.cpp \
   pow.cpp \
   rest.cpp \
   rpc/blockchain.cpp \
@@ -414,7 +418,6 @@ libdash_server_a_SOURCES = \
   rpc/rpcquorums.cpp \
   rpc/server.cpp \
   rpc/coinjoin.cpp \
-  rpc/util.cpp \
   script/sigcache.cpp \
   shutdown.cpp \
   spork.cpp \
@@ -462,7 +465,7 @@ libdash_wallet_a_SOURCES = \
   wallet/crypter.cpp \
   wallet/db.cpp \
   wallet/fees.cpp \
-  wallet/init.cpp \
+  wallet/load.cpp \
   wallet/psbtwallet.cpp \
   wallet/rpcdump.cpp \
   wallet/rpcwallet.cpp \
@@ -571,6 +574,7 @@ libdash_consensus_a_SOURCES = \
   consensus/merkle.cpp \
   consensus/merkle.h \
   consensus/params.h \
+  consensus/tx_check.cpp \
   consensus/validation.h \
   hash.cpp \
   hash.h \
@@ -605,6 +609,7 @@ libdash_common_a_SOURCES = \
   base58.cpp \
   bech32.cpp \
   bip39.cpp \
+  bloom.cpp \
   chainparams.cpp \
   coins.cpp \
   compressor.cpp \
@@ -614,12 +619,16 @@ libdash_common_a_SOURCES = \
   key.cpp \
   key_io.cpp \
   keystore.cpp \
+  merkleblock.cpp \
   netaddress.cpp \
   netbase.cpp \
   net_permissions.cpp \
   policy/feerate.cpp \
+  policy/policy.cpp \
   psbt.cpp \
   protocol.cpp \
+  rpc/rawtransaction_util.cpp \
+  rpc/util.cpp \
   saltedhasher.cpp \
   scheduler.cpp \
   script/descriptor.cpp \
@@ -648,6 +657,7 @@ libdash_util_a_SOURCES = \
   compat/glibcxx_sanity.cpp \
   compat/strnlen.cpp \
   fs.cpp \
+  interfaces/handler.cpp \
   logging.cpp \
   random.cpp \
   rpc/protocol.cpp \

src/consensus/tx_check.cpp

@@ -0,0 +1,65 @@
+// Copyright (c) 2017-2018 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 <version.h>
+
+#include <consensus/consensus.h>
+#include <consensus/tx_check.h>
+
+#include <primitives/transaction.h>
+#include <consensus/validation.h>
+
+bool CheckTransaction(const CTransaction& tx, CValidationState& state)
+{
+    bool allowEmptyTxInOut = false;
+    if (tx.nType == TRANSACTION_QUORUM_COMMITMENT) {
+        allowEmptyTxInOut = true;
+    }
+
+    // Basic checks that don't depend on any context
+    if (!allowEmptyTxInOut && tx.vin.empty())
+        return state.DoS(10, false, REJECT_INVALID, "bad-txns-vin-empty");
+    if (!allowEmptyTxInOut && tx.vout.empty())
+        return state.DoS(10, false, REJECT_INVALID, "bad-txns-vout-empty");
+    // Size limits
+    if (::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION) > MAX_LEGACY_BLOCK_SIZE)
+        return state.DoS(100, false, REJECT_INVALID, "bad-txns-oversize");
+    if (tx.vExtraPayload.size() > MAX_TX_EXTRA_PAYLOAD)
+        return state.DoS(100, false, REJECT_INVALID, "bad-txns-payload-oversize");
+
+    // Check for negative or overflow output values
+    CAmount nValueOut = 0;
+    for (const auto& txout : tx.vout) {
+        if (txout.nValue < 0)
+            return state.DoS(100, false, REJECT_INVALID, "bad-txns-vout-negative");
+        if (txout.nValue > MAX_MONEY)
+            return state.DoS(100, false, REJECT_INVALID, "bad-txns-vout-toolarge");
+        nValueOut += txout.nValue;
+        if (!MoneyRange(nValueOut))
+            return state.DoS(100, false, REJECT_INVALID, "bad-txns-txouttotal-toolarge");
+    }
+
+    // Check for duplicate inputs
+    std::set<COutPoint> vInOutPoints;
+    for (const auto& txin : tx.vin) {
+        if (!vInOutPoints.insert(txin.prevout).second)
+            return state.DoS(100, false, REJECT_INVALID, "bad-txns-inputs-duplicate");
+    }
+
+    if (tx.IsCoinBase()) {
+        size_t minCbSize = 2;
+        if (tx.nType == TRANSACTION_COINBASE) {
+            // With the introduction of CbTx, coinbase scripts are not required anymore to hold a valid block height
+            minCbSize = 1;
+        }
+        if (tx.vin[0].scriptSig.size() < minCbSize || tx.vin[0].scriptSig.size() > 100)
+            return state.DoS(100, false, REJECT_INVALID, "bad-cb-length");
+    } else {
+        for (const auto& txin : tx.vin)
+            if (txin.prevout.IsNull())
+                return state.DoS(10, false, REJECT_INVALID, "bad-txns-prevout-null");
+    }
+
+    return true;
+}

src/consensus/tx_check.h

@@ -0,0 +1,21 @@
+// Copyright (c) 2017-2018 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_CONSENSUS_TX_CHECK_H
+#define BITCOIN_CONSENSUS_TX_CHECK_H
+
+/**
+ * Context-independent transaction checking code that can be called outside the
+ * bitcoin server and doesn't depend on chain or mempool state. Transaction
+ * verification code that does call server functions or depend on server state
+ * belongs in tx_verify.h/cpp instead.
+ */
+
+class CTransaction;
+class CValidationState;
+
+/** Context-independent validity checks */
+bool CheckTransaction(const CTransaction& tx, CValidationState& state);
+
+#endif // BITCOIN_CONSENSUS_TX_CHECK_H

src/consensus/tx_verify.cpp

@@ -159,65 +159,6 @@ unsigned int GetTransactionSigOpCount(const CTransaction& tx, const CCoinsViewCa
     return nSigOps;
 }
 
-bool CheckTransaction(const CTransaction& tx, CValidationState &state)
-{
-    bool allowEmptyTxInOut = false;
-    if (tx.nType == TRANSACTION_QUORUM_COMMITMENT) {
-        allowEmptyTxInOut = true;
-    }
-
-    // Basic checks that don't depend on any context
-    if (!allowEmptyTxInOut && tx.vin.empty())
-        return state.DoS(10, false, REJECT_INVALID, "bad-txns-vin-empty");
-    if (!allowEmptyTxInOut && tx.vout.empty())
-        return state.DoS(10, false, REJECT_INVALID, "bad-txns-vout-empty");
-    // Size limits
-    if (::GetSerializeSize(tx, SER_NETWORK, PROTOCOL_VERSION) > MAX_LEGACY_BLOCK_SIZE)
-        return state.DoS(100, false, REJECT_INVALID, "bad-txns-oversize");
-    if (tx.vExtraPayload.size() > MAX_TX_EXTRA_PAYLOAD)
-        return state.DoS(100, false, REJECT_INVALID, "bad-txns-payload-oversize");
-
-    // Check for negative or overflow output values
-    CAmount nValueOut = 0;
-    for (const auto& txout : tx.vout)
-    {
-        if (txout.nValue < 0)
-            return state.DoS(100, false, REJECT_INVALID, "bad-txns-vout-negative");
-        if (txout.nValue > MAX_MONEY)
-            return state.DoS(100, false, REJECT_INVALID, "bad-txns-vout-toolarge");
-        nValueOut += txout.nValue;
-        if (!MoneyRange(nValueOut))
-            return state.DoS(100, false, REJECT_INVALID, "bad-txns-txouttotal-toolarge");
-    }
-
-    // Check for duplicate inputs
-    std::set<COutPoint> vInOutPoints;
-    for (const auto& txin : tx.vin)
-    {
-        if (!vInOutPoints.insert(txin.prevout).second)
-            return state.DoS(100, false, REJECT_INVALID, "bad-txns-inputs-duplicate");
-    }
-
-    if (tx.IsCoinBase())
-    {
-        size_t minCbSize = 2;
-        if (tx.nType == TRANSACTION_COINBASE) {
-            // With the introduction of CbTx, coinbase scripts are not required anymore to hold a valid block height
-            minCbSize = 1;
-        }
-        if (tx.vin[0].scriptSig.size() < minCbSize || tx.vin[0].scriptSig.size() > 100)
-            return state.DoS(100, false, REJECT_INVALID, "bad-cb-length");
-    }
-    else
-    {
-        for (const auto& txin : tx.vin)
-            if (txin.prevout.IsNull())
-                return state.DoS(10, false, REJECT_INVALID, "bad-txns-prevout-null");
-    }
-
-    return true;
-}
-
 bool Consensus::CheckTxInputs(const CTransaction& tx, CValidationState& state, const CCoinsViewCache& inputs, int nSpendHeight, CAmount& txfee)
 {
     // are the actual inputs available?

src/consensus/tx_verify.h

@@ -17,9 +17,6 @@ class CValidationState;
 
 /** Transaction validation functions */
 
-/** Context-independent validity checks */
-bool CheckTransaction(const CTransaction& tx, CValidationState& state);
-
 namespace Consensus {
 /**
  * Check whether all inputs of this transaction are valid (no double spends and amounts)

src/init.cpp

@@ -37,6 +37,7 @@
 #include <policy/feerate.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <rpc/server.h>
 #include <rpc/register.h>
 #include <rpc/blockchain.h>

src/interfaces/chain.cpp

@@ -19,6 +19,7 @@
 #include <rpc/protocol.h>
 #include <rpc/server.h>
 #include <shutdown.h>
+#include <policy/settings.h>
 #include <sync.h>
 #include <threadsafety.h>
 #include <timedata.h>

src/interfaces/node.cpp

@@ -25,6 +25,7 @@
 #include <policy/feerate.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <primitives/block.h>
 #include <rpc/server.h>
 #include <scheduler.h>

src/interfaces/wallet.cpp

@@ -30,6 +30,7 @@
 #include <validation.h>
 #include <wallet/fees.h>
 #include <wallet/rpcwallet.h>
+#include <wallet/load.h>
 #include <wallet/wallet.h>
 #include <wallet/walletutil.h>
 

src/messagesigner.cpp

@@ -4,7 +4,7 @@
 
 #include <key_io.h>
 #include <hash.h>
-#include <validation.h> // For strMessageMagic
+#include <util/validation.h> // For strMessageMagic
 #include <messagesigner.h>
 #include <tinyformat.h>
 #include <util/strencodings.h>

src/node/README.md

@@ -0,0 +1,22 @@
+# src/node/
+
+The [`src/node/`](./) directory contains code that needs to access node state
+(state in `CChain`, `CBlockIndex`, `CCoinsView`, `CTxMemPool`, and similar
+classes).
+
+Code in [`src/node/`](./) is meant to be segregated from code in
+[`src/wallet/`](../wallet/) and [`src/qt/`](../qt/), to ensure wallet and GUI
+code changes don't interfere with node operation, to allow wallet and GUI code
+to run in separate processes, and to perhaps eventually allow wallet and GUI
+code to be maintained in separate source repositories.
+
+As a rule of thumb, code in one of the [`src/node/`](./),
+[`src/wallet/`](../wallet/), or [`src/qt/`](../qt/) directories should avoid
+calling code in the other directories directly, and only invoke it indirectly
+through the more limited [`src/interfaces/`](../interfaces/) classes.
+
+The [`src/node/`](./) directory is a new directory introduced in
+[#14978](https://github.com/bitcoin/bitcoin/pull/14978) and at the moment is
+sparsely populated. Eventually more substantial files like
+[`src/validation.cpp`](../validation.cpp) and
+[`src/txmempool.cpp`](../txmempool.cpp) might be moved there.

src/node/transaction.cpp

@@ -13,32 +13,6 @@
 
 #include <future>
 
-std::string TransactionErrorString(const TransactionError err)
-{
-    switch (err) {
-        case TransactionError::OK:
-            return "No error";
-        case TransactionError::MISSING_INPUTS:
-            return "Missing inputs";
-        case TransactionError::ALREADY_IN_CHAIN:
-            return "Transaction already in block chain";
-        case TransactionError::P2P_DISABLED:
-            return "Peer-to-peer functionality missing or disabled";
-        case TransactionError::MEMPOOL_REJECTED:
-            return "Transaction rejected by AcceptToMemoryPool";
-        case TransactionError::MEMPOOL_ERROR:
-            return "AcceptToMemoryPool failed";
-        case TransactionError::INVALID_PSBT:
-            return "PSBT is not sane";
-        case TransactionError::PSBT_MISMATCH:
-            return "PSBTs not compatible (different transactions)";
-        case TransactionError::SIGHASH_MISMATCH:
-            return "Specified sighash value does not match existing value";
-        // no default case, so the compiler can warn about missing cases
-    }
-    assert(false);
-}
-
 TransactionError BroadcastTransaction(const CTransactionRef tx, uint256& hashTx, std::string& err_string, const CAmount& highfee, const bool bypass_limits)
 {
     std::promise<void> promise;

src/node/transaction.h

@@ -8,20 +8,7 @@
 #include <attributes.h>
 #include <primitives/transaction.h>
 #include <uint256.h>
-
+#include <util/error.h>
-enum class TransactionError {
-    OK, //!< No error
-    MISSING_INPUTS,
-    ALREADY_IN_CHAIN,
-    P2P_DISABLED,
-    MEMPOOL_REJECTED,
-    MEMPOOL_ERROR,
-    INVALID_PSBT,
-    PSBT_MISMATCH,
-    SIGHASH_MISMATCH,
-};
-
-std::string TransactionErrorString(const TransactionError error);
 
 /**
  * Broadcast a transaction

src/policy/fees.cpp

@@ -26,41 +26,6 @@ std::string StringForFeeEstimateHorizon(FeeEstimateHorizon horizon) {
 
     return horizon_string->second;
 }
-
-std::string StringForFeeReason(FeeReason reason) {
-    static const std::map<FeeReason, std::string> fee_reason_strings = {
-        {FeeReason::NONE, "None"},
-        {FeeReason::HALF_ESTIMATE, "Half Target 60% Threshold"},
-        {FeeReason::FULL_ESTIMATE, "Target 85% Threshold"},
-        {FeeReason::DOUBLE_ESTIMATE, "Double Target 95% Threshold"},
-        {FeeReason::CONSERVATIVE, "Conservative Double Target longer horizon"},
-        {FeeReason::MEMPOOL_MIN, "Mempool Min Fee"},
-        {FeeReason::PAYTXFEE, "PayTxFee set"},
-        {FeeReason::FALLBACK, "Fallback fee"},
-        {FeeReason::REQUIRED, "Minimum Required Fee"},
-        {FeeReason::MAXTXFEE, "MaxTxFee limit"}
-    };
-    auto reason_string = fee_reason_strings.find(reason);
-
-    if (reason_string == fee_reason_strings.end()) return "Unknown";
-
-    return reason_string->second;
-}
-
-bool FeeModeFromString(const std::string& mode_string, FeeEstimateMode& fee_estimate_mode) {
-    static const std::map<std::string, FeeEstimateMode> fee_modes = {
-        {"UNSET", FeeEstimateMode::UNSET},
-        {"ECONOMICAL", FeeEstimateMode::ECONOMICAL},
-        {"CONSERVATIVE", FeeEstimateMode::CONSERVATIVE},
-    };
-    auto mode = fee_modes.find(mode_string);
-
-    if (mode == fee_modes.end()) return false;
-
-    fee_estimate_mode = mode->second;
-    return true;
-}
-
 /**
  * We will instantiate an instance of this class to track transactions that were
  * included in a block. We will lump transactions into a bucket according to their

src/policy/fees.h

@@ -46,8 +46,6 @@ enum class FeeReason {
     MAXTXFEE,
 };
 
-std::string StringForFeeReason(FeeReason reason);
-
 /* Used to determine type of fee estimation requested */
 enum class FeeEstimateMode {
     UNSET,        //!< Use default settings based on other criteria
@@ -55,8 +53,6 @@ enum class FeeEstimateMode {
     CONSERVATIVE, //!< Force estimateSmartFee to use conservative estimates
 };
 
-bool FeeModeFromString(const std::string& mode_string, FeeEstimateMode& fee_estimate_mode);
-
 /* Used to return detailed information about a feerate bucket */
 struct EstimatorBucket
 {

src/policy/policy.cpp

@@ -9,6 +9,7 @@
 
 #include <validation.h>
 #include <coins.h>
+#include <policy/settings.h>
 #include <tinyformat.h>
 #include <util/system.h>
 #include <util/strencodings.h>
@@ -170,10 +171,6 @@ bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs)
     return true;
 }
 
-unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP;
-CFeeRate incrementalRelayFee = CFeeRate(DEFAULT_INCREMENTAL_RELAY_FEE);
-CFeeRate dustRelayFee = CFeeRate(DUST_RELAY_TX_FEE);
-
 int64_t GetVirtualTransactionSize(int64_t nSize, int64_t nSigOp)
 {
     return std::max(nSize, nSigOp * nBytesPerSigOp);

src/policy/policy.h

@@ -34,6 +34,8 @@ static const unsigned int DEFAULT_MAX_MEMPOOL_SIZE = 300;
 static const unsigned int DEFAULT_INCREMENTAL_RELAY_FEE = 1000;
 /** Default for -bytespersigop */
 static const unsigned int DEFAULT_BYTES_PER_SIGOP = 20;
+/** Default for -permitbaremultisig */
+static const bool DEFAULT_PERMIT_BAREMULTISIG = true;
 /** Min feerate for defining dust. Historically this has been based on the
  * minRelayTxFee, however changing the dust limit changes which transactions are
  * standard and should be done with care and ideally rarely. It makes sense to
@@ -83,12 +85,8 @@ bool IsStandardTx(const CTransaction& tx, std::string& reason);
      */
 bool AreInputsStandard(const CTransaction& tx, const CCoinsViewCache& mapInputs);
 
-extern unsigned int nBytesPerSigOp;
-
 /** Compute the virtual transaction size (taking sigops into account). */
 int64_t GetVirtualTransactionSize(int64_t nSize, int64_t nSigOp);
 int64_t GetVirtualTransactionSize(const CTransaction& tx, int64_t nSigOp = 0);
 
-extern CFeeRate incrementalRelayFee;
-extern CFeeRate dustRelayFee;
 #endif // BITCOIN_POLICY_POLICY_H

src/policy/settings.cpp

@@ -0,0 +1,14 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2018 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 <policy/settings.h>
+
+#include <policy/feerate.h>
+#include <policy/policy.h>
+
+bool fIsBareMultisigStd = DEFAULT_PERMIT_BAREMULTISIG;
+CFeeRate incrementalRelayFee = CFeeRate(DEFAULT_INCREMENTAL_RELAY_FEE);
+CFeeRate dustRelayFee = CFeeRate(DUST_RELAY_TX_FEE);
+unsigned int nBytesPerSigOp = DEFAULT_BYTES_PER_SIGOP;

src/policy/settings.h

@@ -0,0 +1,17 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2018 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_POLICY_SETTINGS_H
+#define BITCOIN_POLICY_SETTINGS_H
+
+class CFeeRate;
+
+// Policy settings which are configurable at runtime.
+extern CFeeRate incrementalRelayFee;
+extern CFeeRate dustRelayFee;
+extern unsigned int nBytesPerSigOp;
+extern bool fIsBareMultisigStd;
+
+#endif // BITCOIN_POLICY_SETTINGS_H

src/rpc/net.cpp

@@ -14,6 +14,7 @@
 #include <net_permissions.h>
 #include <netbase.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <rpc/protocol.h>
 #include <rpc/util.h>
 #include <sync.h>

src/rpc/rawtransaction.cpp

@@ -21,7 +21,7 @@
 #include <policy/policy.h>
 #include <primitives/transaction.h>
 #include <psbt.h>
-#include <rpc/rawtransaction.h>
+#include <rpc/rawtransaction_util.h>
 #include <rpc/server.h>
 #include <rpc/util.h>
 #include <script/script.h>
@@ -397,96 +397,6 @@ static UniValue verifytxoutproof(const JSONRPCRequest& request)
     return res;
 }
 
-CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime)
-{
-    if (inputs_in.isNull() || outputs_in.isNull())
-        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, arguments 1 and 2 must be non-null");
-
-    UniValue inputs = inputs_in.get_array();
-    const bool outputs_is_obj = outputs_in.isObject();
-    UniValue outputs = outputs_is_obj ? outputs_in.get_obj() : outputs_in.get_array();
-
-    CMutableTransaction rawTx;
-    if (!locktime.isNull()) {
-        int64_t nLockTime = locktime.get_int64();
-        if (nLockTime < 0 || nLockTime > LOCKTIME_MAX)
-            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range");
-        rawTx.nLockTime = nLockTime;
-    }
-
-    for (unsigned int idx = 0; idx < inputs.size(); idx++) {
-        const UniValue& input = inputs[idx];
-        const UniValue& o = input.get_obj();
-
-        uint256 txid = ParseHashO(o, "txid");
-
-        const UniValue& vout_v = find_value(o, "vout");
-        if (!vout_v.isNum())
-            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, missing vout key");
-        int nOutput = vout_v.get_int();
-        if (nOutput < 0)
-            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, vout must be positive");
-
-        uint32_t nSequence = (rawTx.nLockTime ? CTxIn::SEQUENCE_FINAL - 1 : CTxIn::SEQUENCE_FINAL);
-
-        // set the sequence number if passed in the parameters object
-        const UniValue& sequenceObj = find_value(o, "sequence");
-        if (sequenceObj.isNum()) {
-            int64_t seqNr64 = sequenceObj.get_int64();
-            if (seqNr64 < 0 || seqNr64 > CTxIn::SEQUENCE_FINAL)
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sequence number is out of range");
-            else
-                nSequence = (uint32_t)seqNr64;
-        }
-
-        CTxIn in(COutPoint(txid, nOutput), CScript(), nSequence);
-
-        rawTx.vin.push_back(in);
-    }
-
-    std::set<CTxDestination> destinations;
-    if (!outputs_is_obj) {
-        // Translate array of key-value pairs into dict
-        UniValue outputs_dict = UniValue(UniValue::VOBJ);
-        for (size_t i = 0; i < outputs.size(); ++i) {
-            const UniValue& output = outputs[i];
-            if (!output.isObject()) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair not an object as expected");
-            }
-            if (output.size() != 1) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair must contain exactly one key");
-            }
-            outputs_dict.pushKVs(output);
-        }
-        outputs = std::move(outputs_dict);
-    }
-    for (const std::string& name_ : outputs.getKeys()) {
-        if (name_ == "data") {
-            std::vector<unsigned char> data = ParseHexV(outputs[name_].getValStr(), "Data");
-
-            CTxOut out(0, CScript() << OP_RETURN << data);
-            rawTx.vout.push_back(out);
-        } else {
-            CTxDestination destination = DecodeDestination(name_);
-            if (!IsValidDestination(destination)) {
-                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Dash address: ") + name_);
-            }
-
-            if (!destinations.insert(destination).second) {
-                throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + name_);
-            }
-
-            CScript scriptPubKey = GetScriptForDestination(destination);
-            CAmount nAmount = AmountFromValue(outputs[name_]);
-
-            CTxOut out(nAmount, scriptPubKey);
-            rawTx.vout.push_back(out);
-        }
-    }
-
-    return rawTx;
-}
-
 static UniValue createrawtransaction(const JSONRPCRequest& request)
 {
     if (request.fHelp || request.params.size() < 2 || request.params.size() > 4) {
@@ -673,18 +583,6 @@ static UniValue decodescript(const JSONRPCRequest& request)
     return r;
 }
 
-/** Pushes a JSON object for script verification or signing errors to vErrorsRet. */
-static void TxInErrorToJSON(const CTxIn& txin, UniValue& vErrorsRet, const std::string& strMessage)
-{
-    UniValue entry(UniValue::VOBJ);
-    entry.pushKV("txid", txin.prevout.hash.ToString());
-    entry.pushKV("vout", (uint64_t)txin.prevout.n);
-    entry.pushKV("scriptSig", HexStr(txin.scriptSig));
-    entry.pushKV("sequence", (uint64_t)txin.nSequence);
-    entry.pushKV("error", strMessage);
-    vErrorsRet.push_back(entry);
-}
-
 static UniValue combinerawtransaction(const JSONRPCRequest& request)
 {
     if (request.fHelp || request.params.size() != 1)
@@ -769,135 +667,6 @@ static UniValue combinerawtransaction(const JSONRPCRequest& request)
     return EncodeHexTx(CTransaction(mergedTx));
 }
 
-// TODO(https://github.com/bitcoin/bitcoin/pull/10973#discussion_r267084237):
-// This function is called from both wallet and node rpcs
-// (signrawtransactionwithwallet and signrawtransactionwithkey). It should be
-// moved to a util file so wallet code doesn't need to link against node code.
-// Also the dependency on interfaces::Chain should be removed, so
-// signrawtransactionwithkey doesn't need access to a Chain instance.
-UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, const UniValue& prevTxsUnival, CBasicKeyStore *keystore, bool is_temp_keystore, const UniValue& hashType)
-{
-    // Fetch previous transactions (inputs):
-    std::map<COutPoint, Coin> coins;
-    for (const CTxIn& txin : mtx.vin) {
-        coins[txin.prevout]; // Create empty map entry keyed by prevout.
-    }
-    chain.findCoins(coins);
-
-    // Add previous txouts given in the RPC call:
-    if (!prevTxsUnival.isNull()) {
-        UniValue prevTxs = prevTxsUnival.get_array();
-        for (unsigned int idx = 0; idx < prevTxs.size(); ++idx) {
-            const UniValue& p = prevTxs[idx];
-            if (!p.isObject()) {
-                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "expected object with {\"txid'\",\"vout\",\"scriptPubKey\"}");
-            }
-
-            UniValue prevOut = p.get_obj();
-
-            RPCTypeCheckObj(prevOut,
-                {
-                    {"txid", UniValueType(UniValue::VSTR)},
-                    {"vout", UniValueType(UniValue::VNUM)},
-                    {"scriptPubKey", UniValueType(UniValue::VSTR)},
-                });
-
-            uint256 txid = ParseHashO(prevOut, "txid");
-
-            int nOut = find_value(prevOut, "vout").get_int();
-            if (nOut < 0) {
-                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "vout must be positive");
-            }
-
-            COutPoint out(txid, nOut);
-            std::vector<unsigned char> pkData(ParseHexO(prevOut, "scriptPubKey"));
-            CScript scriptPubKey(pkData.begin(), pkData.end());
-
-            {
-                auto coin = coins.find(out);
-                if (coin != coins.end() && !coin->second.IsSpent() && coin->second.out.scriptPubKey != scriptPubKey) {
-                    std::string err("Previous output scriptPubKey mismatch:\n");
-                    err = err + ScriptToAsmStr(coin->second.out.scriptPubKey) + "\nvs:\n"+
-                        ScriptToAsmStr(scriptPubKey);
-                    throw JSONRPCError(RPC_DESERIALIZATION_ERROR, err);
-                }
-                Coin newcoin;
-                newcoin.out.scriptPubKey = scriptPubKey;
-                newcoin.out.nValue = 0;
-                if (prevOut.exists("amount")) {
-                    newcoin.out.nValue = AmountFromValue(find_value(prevOut, "amount"));
-                }
-                newcoin.nHeight = 1;
-                coins[out] = std::move(newcoin);
-            }
-
-            // if redeemScript and private keys were given, add redeemScript to the keystore so it can be signed
-            if (is_temp_keystore && scriptPubKey.IsPayToScriptHash()) {
-                RPCTypeCheckObj(prevOut,
-                    {
-                        {"redeemScript", UniValueType(UniValue::VSTR)},
-                    });
-                UniValue v = find_value(prevOut, "redeemScript");
-                if (!v.isNull()) {
-                    std::vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));
-                    CScript redeemScript(rsData.begin(), rsData.end());
-                    keystore->AddCScript(redeemScript);
-                }
-            }
-        }
-    }
-
-    int nHashType = ParseSighashString(hashType);
-
-    bool fHashSingle = ((nHashType & ~SIGHASH_ANYONECANPAY) == SIGHASH_SINGLE);
-
-    // Script verification errors
-    UniValue vErrors(UniValue::VARR);
-
-    // Use CTransaction for the constant parts of the
-    // transaction to avoid rehashing.
-    const CTransaction txConst(mtx);
-    // Sign what we can:
-    for (unsigned int i = 0; i < mtx.vin.size(); i++) {
-        CTxIn& txin = mtx.vin[i];
-        auto coin = coins.find(txin.prevout);
-        if (coin == coins.end() || coin->second.IsSpent()) {
-            TxInErrorToJSON(txin, vErrors, "Input not found or already spent");
-            continue;
-        }
-        const CScript& prevPubKey = coin->second.out.scriptPubKey;
-        const CAmount& amount = coin->second.out.nValue;
-
-        SignatureData sigdata = DataFromTransaction(mtx, i, coin->second.out);
-        // Only sign SIGHASH_SINGLE if there's a corresponding output:
-        if (!fHashSingle || (i < mtx.vout.size())) {
-            ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
-        }
-
-        UpdateInput(txin, sigdata);
-
-        ScriptError serror = SCRIPT_ERR_OK;
-        if (!VerifyScript(txin.scriptSig, prevPubKey, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount), &serror)) {
-            if (serror == SCRIPT_ERR_INVALID_STACK_OPERATION) {
-                // Unable to sign input and verification failed (possible attempt to partially sign).
-                TxInErrorToJSON(txin, vErrors, "Unable to sign input, invalid stack size (possibly missing key)");
-            } else {
-                TxInErrorToJSON(txin, vErrors, ScriptErrorString(serror));
-            }
-        }
-    }
-    bool fComplete = vErrors.empty();
-
-    UniValue result(UniValue::VOBJ);
-    result.pushKV("hex", EncodeHexTx(CTransaction(mtx)));
-    result.pushKV("complete", fComplete);
-    if (!vErrors.empty()) {
-        result.pushKV("errors", vErrors);
-    }
-
-    return result;
-}
-
 static UniValue signrawtransactionwithkey(const JSONRPCRequest& request)
 {
     if (request.fHelp || request.params.size() < 2 || request.params.size() > 4)

src/rpc/rawtransaction_util.cpp

@@ -0,0 +1,250 @@
+// Copyright (c) 2010 Satoshi Nakamoto
+// 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 <rpc/rawtransaction_util.h>
+
+#include <coins.h>
+#include <core_io.h>
+#include <interfaces/chain.h>
+#include <key_io.h>
+#include <keystore.h>
+#include <policy/policy.h>
+#include <policy/settings.h>
+#include <primitives/transaction.h>
+#include <rpc/protocol.h>
+#include <rpc/util.h>
+#include <tinyformat.h>
+#include <univalue.h>
+#include <util/strencodings.h>
+#include <validation.h>
+#include <txmempool.h>
+
+CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime)
+{
+    if (inputs_in.isNull() || outputs_in.isNull())
+        throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, arguments 1 and 2 must be non-null");
+
+    UniValue inputs = inputs_in.get_array();
+    const bool outputs_is_obj = outputs_in.isObject();
+    UniValue outputs = outputs_is_obj ? outputs_in.get_obj() : outputs_in.get_array();
+
+    CMutableTransaction rawTx;
+    if (!locktime.isNull()) {
+        int64_t nLockTime = locktime.get_int64();
+        if (nLockTime < 0 || nLockTime > LOCKTIME_MAX)
+            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, locktime out of range");
+        rawTx.nLockTime = nLockTime;
+    }
+
+    for (unsigned int idx = 0; idx < inputs.size(); idx++) {
+        const UniValue& input = inputs[idx];
+        const UniValue& o = input.get_obj();
+
+        uint256 txid = ParseHashO(o, "txid");
+
+        const UniValue& vout_v = find_value(o, "vout");
+        if (!vout_v.isNum())
+            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, missing vout key");
+        int nOutput = vout_v.get_int();
+        if (nOutput < 0)
+            throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, vout must be positive");
+
+        uint32_t nSequence = (rawTx.nLockTime ? CTxIn::SEQUENCE_FINAL - 1 : CTxIn::SEQUENCE_FINAL);
+
+        // set the sequence number if passed in the parameters object
+        const UniValue& sequenceObj = find_value(o, "sequence");
+        if (sequenceObj.isNum()) {
+            int64_t seqNr64 = sequenceObj.get_int64();
+            if (seqNr64 < 0 || seqNr64 > CTxIn::SEQUENCE_FINAL)
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, sequence number is out of range");
+            else
+                nSequence = (uint32_t)seqNr64;
+        }
+
+        CTxIn in(COutPoint(txid, nOutput), CScript(), nSequence);
+
+        rawTx.vin.push_back(in);
+    }
+
+    std::set<CTxDestination> destinations;
+    if (!outputs_is_obj) {
+        // Translate array of key-value pairs into dict
+        UniValue outputs_dict = UniValue(UniValue::VOBJ);
+        for (size_t i = 0; i < outputs.size(); ++i) {
+            const UniValue& output = outputs[i];
+            if (!output.isObject()) {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair not an object as expected");
+            }
+            if (output.size() != 1) {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, "Invalid parameter, key-value pair must contain exactly one key");
+            }
+            outputs_dict.pushKVs(output);
+        }
+        outputs = std::move(outputs_dict);
+    }
+    for (const std::string& name_ : outputs.getKeys()) {
+        if (name_ == "data") {
+            std::vector<unsigned char> data = ParseHexV(outputs[name_].getValStr(), "Data");
+
+            CTxOut out(0, CScript() << OP_RETURN << data);
+            rawTx.vout.push_back(out);
+        } else {
+            CTxDestination destination = DecodeDestination(name_);
+            if (!IsValidDestination(destination)) {
+                throw JSONRPCError(RPC_INVALID_ADDRESS_OR_KEY, std::string("Invalid Dash address: ") + name_);
+            }
+
+            if (!destinations.insert(destination).second) {
+                throw JSONRPCError(RPC_INVALID_PARAMETER, std::string("Invalid parameter, duplicated address: ") + name_);
+            }
+
+            CScript scriptPubKey = GetScriptForDestination(destination);
+            CAmount nAmount = AmountFromValue(outputs[name_]);
+
+            CTxOut out(nAmount, scriptPubKey);
+            rawTx.vout.push_back(out);
+        }
+    }
+
+    return rawTx;
+}
+
+/** Pushes a JSON object for script verification or signing errors to vErrorsRet. */
+static void TxInErrorToJSON(const CTxIn& txin, UniValue& vErrorsRet, const std::string& strMessage)
+{
+    UniValue entry(UniValue::VOBJ);
+    entry.pushKV("txid", txin.prevout.hash.ToString());
+    entry.pushKV("vout", (uint64_t)txin.prevout.n);
+    entry.pushKV("scriptSig", HexStr(txin.scriptSig));
+    entry.pushKV("sequence", (uint64_t)txin.nSequence);
+    entry.pushKV("error", strMessage);
+    vErrorsRet.push_back(entry);
+}
+
+// TODO(https://github.com/bitcoin/bitcoin/pull/10973#discussion_r267084237):
+// The dependency on interfaces::Chain should be removed, so
+// signrawtransactionwithkey doesn't need access to a Chain instance.
+UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, const UniValue& prevTxsUnival, CBasicKeyStore *keystore, bool is_temp_keystore, const UniValue& hashType)
+{
+    // Fetch previous transactions (inputs):
+    std::map<COutPoint, Coin> coins;
+    for (const CTxIn& txin : mtx.vin) {
+        coins[txin.prevout]; // Create empty map entry keyed by prevout.
+    }
+    chain.findCoins(coins);
+
+    // Add previous txouts given in the RPC call:
+    if (!prevTxsUnival.isNull()) {
+        UniValue prevTxs = prevTxsUnival.get_array();
+        for (unsigned int idx = 0; idx < prevTxs.size(); ++idx) {
+            const UniValue& p = prevTxs[idx];
+            if (!p.isObject()) {
+                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "expected object with {\"txid'\",\"vout\",\"scriptPubKey\"}");
+            }
+
+            UniValue prevOut = p.get_obj();
+
+            RPCTypeCheckObj(prevOut,
+                {
+                    {"txid", UniValueType(UniValue::VSTR)},
+                    {"vout", UniValueType(UniValue::VNUM)},
+                    {"scriptPubKey", UniValueType(UniValue::VSTR)},
+                });
+
+            uint256 txid = ParseHashO(prevOut, "txid");
+
+            int nOut = find_value(prevOut, "vout").get_int();
+            if (nOut < 0) {
+                throw JSONRPCError(RPC_DESERIALIZATION_ERROR, "vout must be positive");
+            }
+
+            COutPoint out(txid, nOut);
+            std::vector<unsigned char> pkData(ParseHexO(prevOut, "scriptPubKey"));
+            CScript scriptPubKey(pkData.begin(), pkData.end());
+
+            {
+                auto coin = coins.find(out);
+                if (coin != coins.end() && !coin->second.IsSpent() && coin->second.out.scriptPubKey != scriptPubKey) {
+                    std::string err("Previous output scriptPubKey mismatch:\n");
+                    err = err + ScriptToAsmStr(coin->second.out.scriptPubKey) + "\nvs:\n"+
+                        ScriptToAsmStr(scriptPubKey);
+                    throw JSONRPCError(RPC_DESERIALIZATION_ERROR, err);
+                }
+                Coin newcoin;
+                newcoin.out.scriptPubKey = scriptPubKey;
+                newcoin.out.nValue = 0;
+                if (prevOut.exists("amount")) {
+                    newcoin.out.nValue = AmountFromValue(find_value(prevOut, "amount"));
+                }
+                newcoin.nHeight = 1;
+                coins[out] = std::move(newcoin);
+            }
+
+            // if redeemScript and private keys were given, add redeemScript to the keystore so it can be signed
+            if (is_temp_keystore && scriptPubKey.IsPayToScriptHash()) {
+                RPCTypeCheckObj(prevOut,
+                {
+                    {"redeemScript", UniValueType(UniValue::VSTR)},
+                });
+                UniValue v = find_value(prevOut, "redeemScript");
+                if (!v.isNull()) {
+                    std::vector<unsigned char> rsData(ParseHexV(v, "redeemScript"));
+                    CScript redeemScript(rsData.begin(), rsData.end());
+                    keystore->AddCScript(redeemScript);
+                }
+            }
+        }
+    }
+
+    int nHashType = ParseSighashString(hashType);
+
+    bool fHashSingle = ((nHashType & ~SIGHASH_ANYONECANPAY) == SIGHASH_SINGLE);
+
+    // Script verification errors
+    UniValue vErrors(UniValue::VARR);
+
+    // Use CTransaction for the constant parts of the
+    // transaction to avoid rehashing.
+    const CTransaction txConst(mtx);
+    // Sign what we can:
+    for (unsigned int i = 0; i < mtx.vin.size(); i++) {
+        CTxIn& txin = mtx.vin[i];
+        auto coin = coins.find(txin.prevout);
+        if (coin == coins.end() || coin->second.IsSpent()) {
+            TxInErrorToJSON(txin, vErrors, "Input not found or already spent");
+            continue;
+        }
+        const CScript& prevPubKey = coin->second.out.scriptPubKey;
+        const CAmount& amount = coin->second.out.nValue;
+
+        SignatureData sigdata = DataFromTransaction(mtx, i, coin->second.out);
+        // Only sign SIGHASH_SINGLE if there's a corresponding output:
+        if (!fHashSingle || (i < mtx.vout.size())) {
+            ProduceSignature(*keystore, MutableTransactionSignatureCreator(&mtx, i, amount, nHashType), prevPubKey, sigdata);
+        }
+
+        UpdateInput(txin, sigdata);
+
+        ScriptError serror = SCRIPT_ERR_OK;
+        if (!VerifyScript(txin.scriptSig, prevPubKey, STANDARD_SCRIPT_VERIFY_FLAGS, TransactionSignatureChecker(&txConst, i, amount), &serror)) {
+            if (serror == SCRIPT_ERR_INVALID_STACK_OPERATION) {
+                // Unable to sign input and verification failed (possible attempt to partially sign).
+                TxInErrorToJSON(txin, vErrors, "Unable to sign input, invalid stack size (possibly missing key)");
+            } else {
+                TxInErrorToJSON(txin, vErrors, ScriptErrorString(serror));
+            }
+        }
+    }
+    bool fComplete = vErrors.empty();
+
+    UniValue result(UniValue::VOBJ);
+    result.pushKV("hex", EncodeHexTx(CTransaction(mtx)));
+    result.pushKV("complete", fComplete);
+    if (!vErrors.empty()) {
+        result.pushKV("errors", vErrors);
+    }
+
+    return result;
+}

src/rpc/rawtransaction_util.h

@@ -2,12 +2,12 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#ifndef BITCOIN_RPC_RAWTRANSACTION_H
+#ifndef BITCOIN_RPC_RAWTRANSACTION_UTIL_H
-#define BITCOIN_RPC_RAWTRANSACTION_H
+#define BITCOIN_RPC_RAWTRANSACTION_UTIL_H
 
 class CBasicKeyStore;
-struct CMutableTransaction;
 class UniValue;
+struct CMutableTransaction;
 
 namespace interfaces {
 class Chain;
@@ -19,4 +19,4 @@ UniValue SignTransaction(interfaces::Chain& chain, CMutableTransaction& mtx, con
 /** Create a transaction from univalue parameters */
 CMutableTransaction ConstructTransaction(const UniValue& inputs_in, const UniValue& outputs_in, const UniValue& locktime);
 
-#endif // BITCOIN_RPC_RAWTRANSACTION_H
+#endif // BITCOIN_RPC_RAWTRANSACTION_UTIL_H

src/rpc/server.cpp

@@ -54,150 +54,6 @@ void RPCServer::OnStopped(std::function<void ()> slot)
     g_rpcSignals.Stopped.connect(slot);
 }
 
-void RPCTypeCheck(const UniValue& params,
-                  const std::list<UniValueType>& typesExpected,
-                  bool fAllowNull)
-{
-    unsigned int i = 0;
-    for (const UniValueType& t : typesExpected) {
-        if (params.size() <= i)
-            break;
-
-        const UniValue& v = params[i];
-        if (!(fAllowNull && v.isNull())) {
-            RPCTypeCheckArgument(v, t);
-        }
-        i++;
-    }
-}
-
-void RPCTypeCheckArgument(const UniValue& value, const UniValueType& typeExpected)
-{
-    if (!typeExpected.typeAny && value.type() != typeExpected.type) {
-        throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Expected type %s, got %s", uvTypeName(typeExpected.type), uvTypeName(value.type())));
-    }
-}
-
-void RPCTypeCheckObj(const UniValue& o,
-    const std::map<std::string, UniValueType>& typesExpected,
-    bool fAllowNull,
-    bool fStrict)
-{
-    for (const auto& t : typesExpected) {
-        const UniValue& v = find_value(o, t.first);
-        if (!fAllowNull && v.isNull())
-            throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
-
-        if (!(t.second.typeAny || v.type() == t.second.type || (fAllowNull && v.isNull()))) {
-            std::string err = strprintf("Expected type %s for %s, got %s",
-                uvTypeName(t.second.type), t.first, uvTypeName(v.type()));
-            throw JSONRPCError(RPC_TYPE_ERROR, err);
-        }
-    }
-
-    if (fStrict)
-    {
-        for (const std::string& k : o.getKeys())
-        {
-            if (typesExpected.count(k) == 0)
-            {
-                std::string err = strprintf("Unexpected key %s", k);
-                throw JSONRPCError(RPC_TYPE_ERROR, err);
-            }
-        }
-    }
-}
-
-CAmount AmountFromValue(const UniValue& value)
-{
-    if (!value.isNum() && !value.isStr())
-        throw JSONRPCError(RPC_TYPE_ERROR, "Amount is not a number or string");
-    CAmount amount;
-    if (!ParseFixedPoint(value.getValStr(), 8, &amount))
-        throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
-    if (!MoneyRange(amount))
-        throw JSONRPCError(RPC_TYPE_ERROR, "Amount out of range");
-    return amount;
-}
-
-uint256 ParseHashV(const UniValue& v, std::string strName)
-{
-    std::string strHex;
-    if (v.isStr())
-        strHex = v.get_str();
-    if (!IsHex(strHex)) // Note: IsHex("") is false
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
-    if (64 != strHex.length())
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("%s must be of length %d (not %d)", strName, 64, strHex.length()));
-    uint256 result;
-    result.SetHex(strHex);
-    return result;
-}
-uint256 ParseHashO(const UniValue& o, std::string strKey)
-{
-    return ParseHashV(find_value(o, strKey), strKey);
-}
-std::vector<unsigned char> ParseHexV(const UniValue& v, std::string strName)
-{
-    std::string strHex;
-    if (v.isStr())
-        strHex = v.get_str();
-    if (!IsHex(strHex))
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
-    return ParseHex(strHex);
-}
-std::vector<unsigned char> ParseHexO(const UniValue& o, std::string strKey)
-{
-    return ParseHexV(find_value(o, strKey), strKey);
-}
-
-int32_t ParseInt32V(const UniValue& v, const std::string &strName)
-{
-    std::string strNum = v.getValStr();
-    int32_t num;
-    if (!ParseInt32(strNum, &num))
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a 32bit integer (not '"+strNum+"')");
-    return num;
-}
-
-int64_t ParseInt64V(const UniValue& v, const std::string &strName)
-{
-    std::string strNum = v.getValStr();
-    int64_t num;
-    if (!ParseInt64(strNum, &num))
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a 64bit integer (not '"+strNum+"')");
-    return num;
-}
-
-double ParseDoubleV(const UniValue& v, const std::string &strName)
-{
-    std::string strNum = v.getValStr();
-    double num;
-    if (!ParseDouble(strNum, &num))
-        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a be number (not '"+strNum+"')");
-    return num;
-}
-
-bool ParseBoolV(const UniValue& v, const std::string &strName)
-{
-    std::string strBool;
-    if (v.isBool())
-        return v.get_bool();
-    else if (v.isNum())
-        strBool = itostr(v.get_int());
-    else if (v.isStr())
-        strBool = v.get_str();
-
-    strBool = ToLower(strBool);
-
-    if (strBool == "true" || strBool == "yes" || strBool == "1") {
-        return true;
-    } else if (strBool == "false" || strBool == "no" || strBool == "0") {
-        return false;
-    }
-    throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be true, false, yes, no, 1 or 0 (not '"+strBool+"')");
-}
-
 std::string CRPCTable::help(const std::string& strCommand, const std::string& strSubCommand, const JSONRPCRequest& helpreq) const
 {
     std::string strRet;
@@ -662,18 +518,6 @@ std::vector<std::string> CRPCTable::listCommands() const
     return commandList;
 }
 
-std::string HelpExampleCli(const std::string& methodname, const std::string& args)
-{
-    return "> dash-cli " + methodname + " " + args + "\n";
-}
-
-std::string HelpExampleRpc(const std::string& methodname, const std::string& args)
-{
-    return "> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", "
-        "\"method\": \"" + methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;'"
-        " http://127.0.0.1:" + strprintf("%d", gArgs.GetArg("-rpcport", BaseParams().RPCPort())) + "/\n";
-}
-
 void RPCSetTimerInterfaceIfUnset(RPCTimerInterface *iface)
 {
     if (!timerInterface)

src/rpc/server.h

@@ -25,15 +25,6 @@ namespace RPCServer
     void OnStopped(std::function<void ()> slot);
 }
 
-/** Wrapper for UniValue::VType, which includes typeAny:
- * Used to denote don't care type. */
-struct UniValueType {
-    UniValueType(UniValue::VType _type) : typeAny(false), type(_type) {}
-    UniValueType() : typeAny(true) {}
-    bool typeAny;
-    UniValue::VType type;
-};
-
 class JSONRPCRequest
 {
 public:
@@ -63,26 +54,6 @@ void SetRPCWarmupFinished();
 /* returns the current warmup state.  */
 bool RPCIsInWarmup(std::string *outStatus);
 
-/**
- * Type-check arguments; throws JSONRPCError if wrong type given. Does not check that
- * the right number of arguments are passed, just that any passed are the correct type.
- */
-void RPCTypeCheck(const UniValue& params,
-                  const std::list<UniValueType>& typesExpected, bool fAllowNull=false);
-
-/**
- * Type-check one argument; throws JSONRPCError if wrong type given.
- */
-void RPCTypeCheckArgument(const UniValue& value, const UniValueType& typeExpected);
-
-/*
-  Check for expected keys/value types in an Object.
-*/
-void RPCTypeCheckObj(const UniValue& o,
-    const std::map<std::string, UniValueType>& typesExpected,
-    bool fAllowNull = false,
-    bool fStrict = false);
-
 /** Opaque base class for timers returned by NewTimerFunc.
  * This provides no methods at the moment, but makes sure that delete
  * cleans up the whole state.
@@ -204,24 +175,6 @@ bool IsDeprecatedRPCEnabled(const std::string& method);
 
 extern CRPCTable tableRPC;
 
-/**
- * Utilities: convert hex-encoded Values
- * (throws error if not hex).
- */
-extern uint256 ParseHashV(const UniValue& v, std::string strName);
-extern uint256 ParseHashO(const UniValue& o, std::string strKey);
-extern std::vector<unsigned char> ParseHexV(const UniValue& v, std::string strName);
-extern std::vector<unsigned char> ParseHexO(const UniValue& o, std::string strKey);
-
-extern int32_t ParseInt32V(const UniValue& v, const std::string &strName);
-extern int64_t ParseInt64V(const UniValue& v, const std::string &strName);
-extern double ParseDoubleV(const UniValue& v, const std::string &strName);
-extern bool ParseBoolV(const UniValue& v, const std::string &strName);
-
-extern CAmount AmountFromValue(const UniValue& value);
-extern std::string HelpExampleCli(const std::string& methodname, const std::string& args);
-extern std::string HelpExampleRpc(const std::string& methodname, const std::string& args);
-
 void StartRPC();
 void InterruptRPC();
 void StopRPC();

src/rpc/util.cpp

@@ -2,15 +2,173 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
+#include <chainparamsbase.h>
 #include <key_io.h>
 #include <keystore.h>
 #include <pubkey.h>
 #include <rpc/util.h>
 #include <tinyformat.h>
+#include <util/system.h>
 #include <util/strencodings.h>
 
 InitInterfaces* g_rpc_interfaces = nullptr;
 
+void RPCTypeCheck(const UniValue& params,
+                  const std::list<UniValueType>& typesExpected,
+                  bool fAllowNull)
+{
+    unsigned int i = 0;
+    for (const UniValueType& t : typesExpected) {
+        if (params.size() <= i)
+            break;
+
+        const UniValue& v = params[i];
+        if (!(fAllowNull && v.isNull())) {
+            RPCTypeCheckArgument(v, t);
+        }
+        i++;
+    }
+}
+
+void RPCTypeCheckArgument(const UniValue& value, const UniValueType& typeExpected)
+{
+    if (!typeExpected.typeAny && value.type() != typeExpected.type) {
+        throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Expected type %s, got %s", uvTypeName(typeExpected.type), uvTypeName(value.type())));
+    }
+}
+
+void RPCTypeCheckObj(const UniValue& o,
+    const std::map<std::string, UniValueType>& typesExpected,
+    bool fAllowNull,
+    bool fStrict)
+{
+    for (const auto& t : typesExpected) {
+        const UniValue& v = find_value(o, t.first);
+        if (!fAllowNull && v.isNull())
+            throw JSONRPCError(RPC_TYPE_ERROR, strprintf("Missing %s", t.first));
+
+        if (!(t.second.typeAny || v.type() == t.second.type || (fAllowNull && v.isNull()))) {
+            std::string err = strprintf("Expected type %s for %s, got %s",
+                uvTypeName(t.second.type), t.first, uvTypeName(v.type()));
+            throw JSONRPCError(RPC_TYPE_ERROR, err);
+        }
+    }
+
+    if (fStrict)
+    {
+        for (const std::string& k : o.getKeys())
+        {
+            if (typesExpected.count(k) == 0)
+            {
+                std::string err = strprintf("Unexpected key %s", k);
+                throw JSONRPCError(RPC_TYPE_ERROR, err);
+            }
+        }
+    }
+}
+
+CAmount AmountFromValue(const UniValue& value)
+{
+    if (!value.isNum() && !value.isStr())
+        throw JSONRPCError(RPC_TYPE_ERROR, "Amount is not a number or string");
+    CAmount amount;
+    if (!ParseFixedPoint(value.getValStr(), 8, &amount))
+        throw JSONRPCError(RPC_TYPE_ERROR, "Invalid amount");
+    if (!MoneyRange(amount))
+        throw JSONRPCError(RPC_TYPE_ERROR, "Amount out of range");
+    return amount;
+}
+
+uint256 ParseHashV(const UniValue& v, std::string strName)
+{
+    std::string strHex;
+    if (v.isStr())
+        strHex = v.get_str();
+    if (!IsHex(strHex)) // Note: IsHex("") is false
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
+    if (64 != strHex.length())
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strprintf("%s must be of length %d (not %d)", strName, 64, strHex.length()));
+    uint256 result;
+    result.SetHex(strHex);
+    return result;
+}
+uint256 ParseHashO(const UniValue& o, std::string strKey)
+{
+    return ParseHashV(find_value(o, strKey), strKey);
+}
+std::vector<unsigned char> ParseHexV(const UniValue& v, std::string strName)
+{
+    std::string strHex;
+    if (v.isStr())
+        strHex = v.get_str();
+    if (!IsHex(strHex))
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be hexadecimal string (not '"+strHex+"')");
+    return ParseHex(strHex);
+}
+std::vector<unsigned char> ParseHexO(const UniValue& o, std::string strKey)
+{
+    return ParseHexV(find_value(o, strKey), strKey);
+}
+
+int32_t ParseInt32V(const UniValue& v, const std::string &strName)
+{
+    std::string strNum = v.getValStr();
+    int32_t num;
+    if (!ParseInt32(strNum, &num))
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a 32bit integer (not '"+strNum+"')");
+    return num;
+}
+
+int64_t ParseInt64V(const UniValue& v, const std::string &strName)
+{
+    std::string strNum = v.getValStr();
+    int64_t num;
+    if (!ParseInt64(strNum, &num))
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a 64bit integer (not '"+strNum+"')");
+    return num;
+}
+
+double ParseDoubleV(const UniValue& v, const std::string &strName)
+{
+    std::string strNum = v.getValStr();
+    double num;
+    if (!ParseDouble(strNum, &num))
+        throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be a be number (not '"+strNum+"')");
+    return num;
+}
+
+bool ParseBoolV(const UniValue& v, const std::string &strName)
+{
+    std::string strBool;
+    if (v.isBool())
+        return v.get_bool();
+    else if (v.isNum())
+        strBool = itostr(v.get_int());
+    else if (v.isStr())
+        strBool = v.get_str();
+
+    strBool = ToLower(strBool);
+
+    if (strBool == "true" || strBool == "yes" || strBool == "1") {
+        return true;
+    } else if (strBool == "false" || strBool == "no" || strBool == "0") {
+        return false;
+    }
+    throw JSONRPCError(RPC_INVALID_PARAMETER, strName+" must be true, false, yes, no, 1 or 0 (not '"+strBool+"')");
+}
+
+std::string HelpExampleCli(const std::string& methodname, const std::string& args)
+{
+    return "> dash-cli " + methodname + " " + args + "\n";
+}
+
+std::string HelpExampleRpc(const std::string& methodname, const std::string& args)
+{
+    return "> curl --user myusername --data-binary '{\"jsonrpc\": \"1.0\", \"id\":\"curltest\", "
+        "\"method\": \"" + methodname + "\", \"params\": [" + args + "] }' -H 'content-type: text/plain;'"
+        " http://127.0.0.1:" + strprintf("%d", gArgs.GetArg("-rpcport", BaseParams().RPCPort())) + "/\n";
+}
+
 // Converts a hex string to a public key if possible
 CPubKey HexToPubKey(const std::string& hex_in)
 {

src/rpc/util.h

@@ -28,6 +28,53 @@ struct InitInterfaces;
 //! state to RPC method implementations.
 extern InitInterfaces* g_rpc_interfaces;
 
+/** Wrapper for UniValue::VType, which includes typeAny:
+ * Used to denote don't care type. */
+struct UniValueType {
+    UniValueType(UniValue::VType _type) : typeAny(false), type(_type) {}
+    UniValueType() : typeAny(true) {}
+    bool typeAny;
+    UniValue::VType type;
+};
+
+/**
+ * Type-check arguments; throws JSONRPCError if wrong type given. Does not check that
+ * the right number of arguments are passed, just that any passed are the correct type.
+ */
+void RPCTypeCheck(const UniValue& params,
+                  const std::list<UniValueType>& typesExpected, bool fAllowNull=false);
+
+/**
+ * Type-check one argument; throws JSONRPCError if wrong type given.
+ */
+void RPCTypeCheckArgument(const UniValue& value, const UniValueType& typeExpected);
+
+/*
+  Check for expected keys/value types in an Object.
+*/
+void RPCTypeCheckObj(const UniValue& o,
+    const std::map<std::string, UniValueType>& typesExpected,
+    bool fAllowNull = false,
+    bool fStrict = false);
+
+/**
+ * Utilities: convert hex-encoded Values
+ * (throws error if not hex).
+ */
+extern uint256 ParseHashV(const UniValue& v, std::string strName);
+extern uint256 ParseHashO(const UniValue& o, std::string strKey);
+extern std::vector<unsigned char> ParseHexV(const UniValue& v, std::string strName);
+extern std::vector<unsigned char> ParseHexO(const UniValue& o, std::string strKey);
+
+extern int32_t ParseInt32V(const UniValue& v, const std::string &strName);
+extern int64_t ParseInt64V(const UniValue& v, const std::string &strName);
+extern double ParseDoubleV(const UniValue& v, const std::string &strName);
+extern bool ParseBoolV(const UniValue& v, const std::string &strName);
+
+extern CAmount AmountFromValue(const UniValue& value);
+extern std::string HelpExampleCli(const std::string& methodname, const std::string& args);
+extern std::string HelpExampleRpc(const std::string& methodname, const std::string& args);
+
 CPubKey HexToPubKey(const std::string& hex_in);
 CPubKey AddrToPubKey(CKeyStore* const keystore, const std::string& addr_in);
 CScript CreateMultisigRedeemscript(const int required, const std::vector<CPubKey>& pubkeys);

src/spork.cpp

@@ -16,7 +16,7 @@
 #include <protocol.h>
 #include <script/standard.h>
 #include <timedata.h>
-#include <validation.h>
+#include <util/validation.h> // for strMessageMagic
 
 #include <string>
 

src/test/script_p2sh_tests.cpp

@@ -10,6 +10,7 @@
 #include <policy/policy.h>
 #include <script/script.h>
 #include <script/script_error.h>
+#include <policy/settings.h>
 #include <script/sign.h>
 #include <script/ismine.h>
 #include <test/setup_common.h>

src/test/script_tests.cpp

@@ -12,6 +12,7 @@
 #include <script/sign.h>
 #include <util/system.h>
 #include <util/strencodings.h>
+#include <rpc/util.h>
 #include <test/setup_common.h>
 
 #if defined(HAVE_CONSENSUS_LIB)

src/test/sighash_tests.cpp

@@ -2,7 +2,7 @@
 // Distributed under the MIT software license, see the accompanying
 // file COPYING or http://www.opensource.org/licenses/mit-license.php.
 
-#include <consensus/tx_verify.h>
+#include <consensus/tx_check.h>
 #include <consensus/validation.h>
 #include <test/data/sighash.json.h>
 #include <hash.h>

src/test/transaction_tests.cpp

@@ -8,13 +8,14 @@
 
 #include <clientversion.h>
 #include <checkqueue.h>
-#include <consensus/tx_verify.h>
+#include <consensus/tx_check.h>
 #include <consensus/validation.h>
 #include <core_io.h>
 #include <key.h>
 #include <keystore.h>
 #include <validation.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <script/script.h>
 #include <script/script_error.h>
 #include <util/strencodings.h>

src/txmempool.cpp

@@ -11,6 +11,7 @@
 #include <validation.h>
 #include <policy/policy.h>
 #include <policy/fees.h>
+#include <policy/settings.h>
 #include <reverse_iterator.h>
 #include <streams.h>
 #include <timedata.h>

src/util/error.cpp

@@ -6,6 +6,32 @@
 
 #include <util/system.h>
 
+std::string TransactionErrorString(const TransactionError err)
+{
+    switch (err) {
+        case TransactionError::OK:
+            return "No error";
+        case TransactionError::MISSING_INPUTS:
+            return "Missing inputs";
+        case TransactionError::ALREADY_IN_CHAIN:
+            return "Transaction already in block chain";
+        case TransactionError::P2P_DISABLED:
+            return "Peer-to-peer functionality missing or disabled";
+        case TransactionError::MEMPOOL_REJECTED:
+            return "Transaction rejected by AcceptToMemoryPool";
+        case TransactionError::MEMPOOL_ERROR:
+            return "AcceptToMemoryPool failed";
+        case TransactionError::INVALID_PSBT:
+            return "PSBT is not sane";
+        case TransactionError::PSBT_MISMATCH:
+            return "PSBTs not compatible (different transactions)";
+        case TransactionError::SIGHASH_MISMATCH:
+            return "Specified sighash value does not match existing value";
+        // no default case, so the compiler can warn about missing cases
+    }
+    assert(false);
+}
+
 std::string AmountHighWarn(const std::string& optname)
 {
     return strprintf(_("%s is set very high!"), optname);

src/util/error.h

@@ -17,6 +17,20 @@
 
 #include <string>
 
+enum class TransactionError {
+    OK, //!< No error
+    MISSING_INPUTS,
+    ALREADY_IN_CHAIN,
+    P2P_DISABLED,
+    MEMPOOL_REJECTED,
+    MEMPOOL_ERROR,
+    INVALID_PSBT,
+    PSBT_MISMATCH,
+    SIGHASH_MISMATCH,
+};
+
+std::string TransactionErrorString(const TransactionError error);
+
 std::string AmountHighWarn(const std::string& optname);
 std::string AmountErrMsg(const char* const optname, const std::string& strValue);
 

src/validation.cpp

@@ -12,6 +12,7 @@
 #include <checkqueue.h>
 #include <consensus/consensus.h>
 #include <consensus/merkle.h>
+#include <consensus/tx_check.h>
 #include <consensus/tx_verify.h>
 #include <consensus/validation.h>
 #include <cuckoocache.h>
@@ -22,6 +23,7 @@
 #include <logging/timer.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <pow.h>
 #include <primitives/block.h>
 #include <primitives/transaction.h>
@@ -141,7 +143,6 @@ bool fTimestampIndex = false;
 bool fSpentIndex = false;
 bool fHavePruned = false;
 bool fPruneMode = false;
-bool fIsBareMultisigStd = DEFAULT_PERMIT_BAREMULTISIG;
 bool fRequireStandard = true;
 bool fCheckBlockIndex = false;
 bool fCheckpointsEnabled = DEFAULT_CHECKPOINTS_ENABLED;

src/validation.h

@@ -83,8 +83,6 @@ static const unsigned int MAX_REJECT_MESSAGE_LENGTH = 111;
 
 static const int64_t DEFAULT_MAX_TIP_AGE = 6 * 60 * 60; // ~144 blocks behind -> 2 x fork detection time, was 24 * 60 * 60 in bitcoin
 
-/** Default for -permitbaremultisig */
-static const bool DEFAULT_PERMIT_BAREMULTISIG = true;
 static const bool DEFAULT_CHECKPOINTS_ENABLED = true;
 static const bool DEFAULT_TXINDEX = true;
 static const bool DEFAULT_ADDRESSINDEX = false;
@@ -130,7 +128,6 @@ typedef std::unordered_map<uint256, CBlockIndex*, BlockHasher> BlockMap;
 typedef std::unordered_multimap<uint256, CBlockIndex*, BlockHasher> PrevBlockMap;
 extern uint64_t nLastBlockTx;
 extern uint64_t nLastBlockSize;
-extern const std::string strMessageMagic;
 extern Mutex g_best_block_mutex;
 extern std::condition_variable g_best_block_cv;
 extern uint256 g_best_block;
@@ -139,7 +136,6 @@ extern std::atomic_bool fReindex;
 extern bool fAddressIndex;
 extern bool fTimestampIndex;
 extern bool fSpentIndex;
-extern bool fIsBareMultisigStd;
 /** Whether there are dedicated script-checking threads running.
  * False indicates all script checking is done on the main threadMessageHandler thread.
  */

src/wallet/fees.cpp

@@ -6,6 +6,7 @@
 #include <wallet/fees.h>
 
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <util/system.h>
 #include <validation.h>
 #include <wallet/coincontrol.h>

src/wallet/init.cpp

@@ -256,58 +256,6 @@ bool WalletInit::ParameterInteraction() const
     return true;
 }
 
-bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files)
-{
-    if (gArgs.IsArgSet("-walletdir")) {
-        fs::path wallet_dir = gArgs.GetArg("-walletdir", "");
-        boost::system::error_code error;
-        // The canonical path cleans the path, preventing >1 Berkeley environment instances for the same directory
-        fs::path canonical_wallet_dir = fs::canonical(wallet_dir, error);
-        if (error || !fs::exists(wallet_dir)) {
-            chain.initError(strprintf(_("Specified -walletdir \"%s\" does not exist"), wallet_dir.string()));
-            return false;
-        } else if (!fs::is_directory(wallet_dir)) {
-            chain.initError(strprintf(_("Specified -walletdir \"%s\" is not a directory"), wallet_dir.string()));
-            return false;
-        // The canonical path transforms relative paths into absolute ones, so we check the non-canonical version
-        } else if (!wallet_dir.is_absolute()) {
-            chain.initError(strprintf(_("Specified -walletdir \"%s\" is a relative path"), wallet_dir.string()));
-            return false;
-        }
-        gArgs.ForceSetArg("-walletdir", canonical_wallet_dir.string());
-    }
-
-    LogPrintf("Using wallet directory %s\n", GetWalletDir().string());
-
-    chain.initMessage(_("Verifying wallet(s)..."));
-
-    // Parameter interaction code should have thrown an error if -salvagewallet
-    // was enabled with more than wallet file, so the wallet_files size check
-    // here should have no effect.
-    bool salvage_wallet = gArgs.GetBoolArg("-salvagewallet", false) && wallet_files.size() <= 1;
-
-    // Keep track of each wallet absolute path to detect duplicates.
-    std::set<fs::path> wallet_paths;
-
-    for (const auto& wallet_file : wallet_files) {
-        WalletLocation location(wallet_file);
-
-        if (!wallet_paths.insert(location.GetPath()).second) {
-            chain.initError(strprintf(_("Error loading wallet %s. Duplicate -wallet filename specified."), wallet_file));
-            return false;
-        }
-
-        std::string error_string;
-        std::string warning_string;
-        bool verify_success = CWallet::Verify(chain, location, salvage_wallet, error_string, warning_string);
-        if (!error_string.empty()) chain.initError(error_string);
-        if (!warning_string.empty()) chain.initWarning(warning_string);
-        if (!verify_success) return false;
-    }
-
-    return true;
-}
-
 void WalletInit::Construct(InitInterfaces& interfaces) const
 {
     if (gArgs.GetBoolArg("-disablewallet", DEFAULT_DISABLE_WALLET)) {
@@ -318,62 +266,6 @@ void WalletInit::Construct(InitInterfaces& interfaces) const
     interfaces.chain_clients.emplace_back(interfaces::MakeWalletClient(*interfaces.chain, gArgs.GetArgs("-wallet")));
 }
 
-bool LoadWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files)
-{
-    for (const std::string& walletFile : wallet_files) {
-        std::shared_ptr<CWallet> pwallet = CWallet::CreateWalletFromFile(chain, WalletLocation(walletFile));
-        if (!pwallet) {
-            return false;
-        }
-    }
-
-    return true;
-}
-
-void StartWallets(CScheduler& scheduler)
-{
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
-        pwallet->postInitProcess();
-    }
-
-    // Run a thread to flush wallet periodically
-    scheduler.scheduleEvery(MaybeCompactWalletDB, 500);
-
-    if (!fMasternodeMode && CCoinJoinClientOptions::IsEnabled()) {
-        scheduler.scheduleEvery(std::bind(&DoCoinJoinMaintenance, std::ref(*g_connman)), 1 * 1000);
-    }
-}
-
-void FlushWallets()
-{
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
-        if (CCoinJoinClientOptions::IsEnabled()) {
-            // Stop CoinJoin, release keys
-            auto it = coinJoinClientManagers.find(pwallet->GetName());
-            it->second->ResetPool();
-            it->second->StopMixing();
-        }
-        pwallet->Flush(false);
-    }
-}
-
-void StopWallets()
-{
-    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
-        pwallet->Flush(true);
-    }
-}
-
-void UnloadWallets()
-{
-    auto wallets = GetWallets();
-    while (!wallets.empty()) {
-        auto wallet = wallets.back();
-        wallets.pop_back();
-        RemoveWallet(wallet);
-        UnloadWallet(std::move(wallet));
-    }
-}
 
 void WalletInit::AutoLockMasternodeCollaterals() const
 {

src/wallet/load.cpp

@@ -0,0 +1,123 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2018 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/load.h>
+
+#include <net.h>
+#include <coinjoin/client.h>
+#include <coinjoin/options.h>
+#include <interfaces/chain.h>
+#include <scheduler.h>
+#include <util/system.h>
+#include <wallet/wallet.h>
+
+bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files)
+{
+    if (gArgs.IsArgSet("-walletdir")) {
+        fs::path wallet_dir = gArgs.GetArg("-walletdir", "");
+        boost::system::error_code error;
+        // The canonical path cleans the path, preventing >1 Berkeley environment instances for the same directory
+        fs::path canonical_wallet_dir = fs::canonical(wallet_dir, error);
+        if (error || !fs::exists(wallet_dir)) {
+            chain.initError(strprintf(_("Specified -walletdir \"%s\" does not exist"), wallet_dir.string()));
+            return false;
+        } else if (!fs::is_directory(wallet_dir)) {
+            chain.initError(strprintf(_("Specified -walletdir \"%s\" is not a directory"), wallet_dir.string()));
+            return false;
+        // The canonical path transforms relative paths into absolute ones, so we check the non-canonical version
+        } else if (!wallet_dir.is_absolute()) {
+            chain.initError(strprintf(_("Specified -walletdir \"%s\" is a relative path"), wallet_dir.string()));
+            return false;
+        }
+        gArgs.ForceSetArg("-walletdir", canonical_wallet_dir.string());
+    }
+
+    LogPrintf("Using wallet directory %s\n", GetWalletDir().string());
+
+    chain.initMessage(_("Verifying wallet(s)..."));
+
+    // Parameter interaction code should have thrown an error if -salvagewallet
+    // was enabled with more than wallet file, so the wallet_files size check
+    // here should have no effect.
+    bool salvage_wallet = gArgs.GetBoolArg("-salvagewallet", false) && wallet_files.size() <= 1;
+
+    // Keep track of each wallet absolute path to detect duplicates.
+    std::set<fs::path> wallet_paths;
+
+    for (const auto& wallet_file : wallet_files) {
+        WalletLocation location(wallet_file);
+
+        if (!wallet_paths.insert(location.GetPath()).second) {
+            chain.initError(strprintf(_("Error loading wallet %s. Duplicate -wallet filename specified."), wallet_file));
+            return false;
+        }
+
+        std::string error_string;
+        std::string warning_string;
+        bool verify_success = CWallet::Verify(chain, location, salvage_wallet, error_string, warning_string);
+        if (!error_string.empty()) chain.initError(error_string);
+        if (!warning_string.empty()) chain.initWarning(warning_string);
+        if (!verify_success) return false;
+    }
+
+    return true;
+}
+
+bool LoadWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files)
+{
+    for (const std::string& walletFile : wallet_files) {
+        std::shared_ptr<CWallet> pwallet = CWallet::CreateWalletFromFile(chain, WalletLocation(walletFile));
+        if (!pwallet) {
+            return false;
+        }
+    }
+
+    return true;
+}
+
+void StartWallets(CScheduler& scheduler)
+{
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+        pwallet->postInitProcess();
+    }
+
+    // Run a thread to flush wallet periodically
+    scheduler.scheduleEvery(MaybeCompactWalletDB, 500);
+
+    if (!fMasternodeMode && CCoinJoinClientOptions::IsEnabled()) {
+        scheduler.scheduleEvery(std::bind(&DoCoinJoinMaintenance, std::ref(*g_connman)), 1 * 1000);
+    }
+}
+
+void FlushWallets()
+{
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+        if (CCoinJoinClientOptions::IsEnabled()) {
+            // Stop CoinJoin, release keys
+            auto it = coinJoinClientManagers.find(pwallet->GetName());
+            it->second->ResetPool();
+            it->second->StopMixing();
+        }
+        pwallet->Flush(false);
+    }
+}
+
+void StopWallets()
+{
+    for (const std::shared_ptr<CWallet>& pwallet : GetWallets()) {
+        pwallet->Flush(true);
+    }
+}
+
+void UnloadWallets()
+{
+    auto wallets = GetWallets();
+    while (!wallets.empty()) {
+        auto wallet = wallets.back();
+        wallets.pop_back();
+        RemoveWallet(wallet);
+        UnloadWallet(std::move(wallet));
+    }
+}

src/wallet/load.h

@@ -0,0 +1,38 @@
+// Copyright (c) 2009-2010 Satoshi Nakamoto
+// Copyright (c) 2009-2018 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_LOAD_H
+#define BITCOIN_WALLET_LOAD_H
+
+#include <string>
+#include <vector>
+
+class CScheduler;
+
+namespace interfaces {
+class Chain;
+} // namespace interfaces
+
+//! Responsible for reading and validating the -wallet arguments and verifying the wallet database.
+//! This function will perform salvage on the wallet if requested, as long as only one wallet is
+//! being loaded (WalletParameterInteraction forbids -salvagewallet, -zapwallettxes or -upgradewallet with multiwallet).
+bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files);
+
+//! Load wallet databases.
+bool LoadWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files);
+
+//! Complete startup of wallets.
+void StartWallets(CScheduler& scheduler);
+
+//! Flush all wallets in preparation for shutdown.
+void FlushWallets();
+
+//! Stop all wallets. Wallets will be flushed first.
+void StopWallets();
+
+//! Close all wallets.
+void UnloadWallets();
+
+#endif // BITCOIN_WALLET_LOAD_H

src/wallet/rpcwallet.cpp

@@ -18,7 +18,7 @@
 #include <policy/feerate.h>
 #include <policy/fees.h>
 #include <rpc/mining.h>
-#include <rpc/rawtransaction.h>
+#include <rpc/rawtransaction_util.h>
 #include <rpc/server.h>
 #include <rpc/util.h>
 #include <script/descriptor.h>

src/wallet/wallet.cpp

@@ -20,6 +20,7 @@
 #include <net.h>
 #include <policy/fees.h>
 #include <policy/policy.h>
+#include <policy/settings.h>
 #include <primitives/block.h>
 #include <primitives/transaction.h>
 #include <script/script.h>

src/wallet/wallet.h

@@ -39,26 +39,6 @@
 #include <utility>
 #include <vector>
 
-//! Responsible for reading and validating the -wallet arguments and verifying the wallet database.
-//  This function will perform salvage on the wallet if requested, as long as only one wallet is
-//  being loaded (WalletParameterInteraction forbids -salvagewallet, -zapwallettxes or -upgradewallet with multiwallet).
-bool VerifyWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files);
-
-//! Load wallet databases.
-bool LoadWallets(interfaces::Chain& chain, const std::vector<std::string>& wallet_files);
-
-//! Complete startup of wallets.
-void StartWallets(CScheduler& scheduler);
-
-//! Flush all wallets in preparation for shutdown.
-void FlushWallets();
-
-//! Stop all wallets. Wallets will be flushed first.
-void StopWallets();
-
-//! Close all wallets.
-void UnloadWallets();
-
 //! Explicitly unload and delete the wallet.
 //  Blocks the current thread after signaling the unload intent so that all
 //  wallet clients release the wallet.

src/wallet/walletdb.cpp

@@ -6,7 +6,7 @@
 
 #include <wallet/walletdb.h>
 
-#include <consensus/tx_verify.h>
+#include <consensus/tx_check.h>
 #include <consensus/validation.h>
 #include <key_io.h>
 #include <fs.h>

test/lint/lint-circular-dependencies.sh

@@ -12,7 +12,7 @@ EXPECTED_CIRCULAR_DEPENDENCIES=(
     "chainparamsbase -> util/system -> chainparamsbase"
     "index/txindex -> validation -> index/txindex"
     "policy/fees -> txmempool -> policy/fees"
-    "policy/policy -> validation -> policy/policy"
+    "policy/policy -> policy/settings -> policy/policy"
     "qt/addresstablemodel -> qt/walletmodel -> qt/addresstablemodel"
     "qt/bantablemodel -> qt/clientmodel -> qt/bantablemodel"
     "qt/bitcoingui -> qt/utilitydialog -> qt/bitcoingui"
@@ -29,6 +29,7 @@ EXPECTED_CIRCULAR_DEPENDENCIES=(
     "wallet/wallet -> wallet/walletdb -> wallet/wallet"
     "wallet/coincontrol -> wallet/wallet -> wallet/coincontrol"
     "policy/fees -> policy/policy -> validation -> policy/fees"
+    "policy/policy -> validation -> policy/policy"
     "qt/addressbookpage -> qt/bitcoingui -> qt/walletview -> qt/addressbookpage"
     "txmempool -> validation -> validationinterface -> txmempool"
     "qt/addressbookpage -> qt/bitcoingui -> qt/walletview -> qt/receivecoinsdialog -> qt/addressbookpage"