Merge #21331: rpc: replace wallet raw pointers with references (#18592 rebased)

7c90c67b7e6f598f9ffdc136ded2b533b78ed044 rpc: refactor rpc wallet functions to take references instead of pointers (fanquake)
48669340080feaff86b8fc0403ef22c820477697 rpc: remove calls to CWallet.get() (fanquake)

Pull request description:

  This is a rebased #18592.

  > This PR replaces raw pointers in `rpcwallet.cpp` and `rpcdump.cpp` with **shared_ptr**. The motivation for this PR is described here https://github.com/bitcoin/bitcoin/issues/18590

  > It seems that this PR is indirectly related to this issue: https://github.com/bitcoin/bitcoin/pull/13063#discussion_r186740049

  > Notice: I have deliberately **not** changed the class `WalletRescanReserver ` whose constructor expects a raw pointer, because it's external and affects other areas, which I didn't touch to avoid making this PR "viral".

  > Fixes https://github.com/bitcoin/bitcoin/issues/18590

ACKs for top commit:
  MarcoFalke:
    ACK 7c90c67b7e6f598f9ffdc136ded2b533b78ed044 🐧
  ryanofsky:
    Code review ACK 7c90c67b7e6f598f9ffdc136ded2b533b78ed044. Changes easy to review with `--word-diff-regex=. -U0`

Tree-SHA512: 32d69c813026b02260e8a89de9d6a5ab9e87826ba230687246583ac7a80c8c3fd00318da4658f1450e04c23d2c77ae765862de0d2a110b1312b3b69a1161e7ba

3 files changed, 190 insertions, 241 deletions

diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index a2872f10ae..60f76465a6 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -56,13 +56,13 @@ static std::string DecodeDumpString(const std::string &str) {
     return ret.str();
 }
 
-static bool GetWalletAddressesForKey(LegacyScriptPubKeyMan* spk_man, const CWallet* const pwallet, const CKeyID& keyid, std::string& strAddr, std::string& strLabel) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static bool GetWalletAddressesForKey(LegacyScriptPubKeyMan* spk_man, const CWallet& wallet, const CKeyID& keyid, std::string& strAddr, std::string& strLabel) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     bool fLabelFound = false;
     CKey key;
     spk_man->GetKey(keyid, key);
     for (const auto& dest : GetAllDestinationsForKey(key.GetPubKey())) {
-        const auto* address_book_entry = pwallet->FindAddressBookEntry(dest);
+        const auto* address_book_entry = wallet.FindAddressBookEntry(dest);
         if (address_book_entry) {
             if (!strAddr.empty()) {
                 strAddr += ",";
@@ -73,7 +73,7 @@ static bool GetWalletAddressesForKey(LegacyScriptPubKeyMan* spk_man, const CWall
         }
     }
     if (!fLabelFound) {
-        strAddr = EncodeDestination(GetDestinationForKey(key.GetPubKey(), pwallet->m_default_address_type));
+        strAddr = EncodeDestination(GetDestinationForKey(key.GetPubKey(), wallet.m_default_address_type));
     }
     return fLabelFound;
 }
@@ -118,22 +118,21 @@ RPCHelpMan importprivkey()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import private keys to a wallet with private keys disabled");
     }
 
-    EnsureLegacyScriptPubKeyMan(*wallet, true);
+    EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     WalletRescanReserver reserver(*pwallet);
     bool fRescan = true;
     {
         LOCK(pwallet->cs_wallet);
 
-        EnsureWalletIsUnlocked(pwallet);
+        EnsureWalletIsUnlocked(*pwallet);
 
         std::string strSecret = request.params[0].get_str();
         std::string strLabel = "";
@@ -210,9 +209,8 @@ RPCHelpMan abortrescan()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     if (!pwallet->IsScanning() || pwallet->IsAbortingRescan()) return false;
     pwallet->AbortRescan();
@@ -249,9 +247,8 @@ RPCHelpMan importaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
@@ -335,9 +332,8 @@ RPCHelpMan importprunedfunds()
                 RPCExamples{""},
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     CMutableTransaction tx;
     if (!DecodeHexTx(tx, request.params[0].get_str())) {
@@ -397,9 +393,8 @@ RPCHelpMan removeprunedfunds()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -445,11 +440,10 @@ RPCHelpMan importpubkey()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
-    EnsureLegacyScriptPubKeyMan(*wallet, true);
+    EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     std::string strLabel;
     if (!request.params[1].isNull())
@@ -527,11 +521,10 @@ RPCHelpMan importwallet()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
-    EnsureLegacyScriptPubKeyMan(*wallet, true);
+    EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     if (pwallet->chain().havePruned()) {
         // Exit early and print an error.
@@ -550,7 +543,7 @@ RPCHelpMan importwallet()
     {
         LOCK(pwallet->cs_wallet);
 
-        EnsureWalletIsUnlocked(pwallet);
+        EnsureWalletIsUnlocked(*pwallet);
 
         fsbridge::ifstream file;
         file.open(request.params[0].get_str(), std::ios::in | std::ios::ate);
@@ -684,15 +677,14 @@ RPCHelpMan dumpprivkey()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
-    LegacyScriptPubKeyMan& spk_man = EnsureLegacyScriptPubKeyMan(*wallet);
+    LegacyScriptPubKeyMan& spk_man = EnsureLegacyScriptPubKeyMan(*pwallet);
 
     LOCK2(pwallet->cs_wallet, spk_man.cs_KeyStore);
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     std::string strAddress = request.params[0].get_str();
     CTxDestination dest = DecodeDestination(strAddress);
@@ -747,7 +739,7 @@ RPCHelpMan dumpwallet()
 
     LOCK2(wallet.cs_wallet, spk_man.cs_KeyStore);
 
-    EnsureWalletIsUnlocked(&wallet);
+    EnsureWalletIsUnlocked(wallet);
 
     fs::path filepath = request.params[0].get_str();
     filepath = fs::absolute(filepath);
@@ -809,7 +801,7 @@ RPCHelpMan dumpwallet()
         CKey key;
         if (spk_man.GetKey(keyid, key)) {
             file << strprintf("%s %s ", EncodeSecret(key), strTime);
-            if (GetWalletAddressesForKey(&spk_man, &wallet, keyid, strAddr, strLabel)) {
+            if (GetWalletAddressesForKey(&spk_man, wallet, keyid, strAddr, strLabel)) {
                 file << strprintf("label=%s", strLabel);
             } else if (keyid == seed_id) {
                 file << "hdseed=1";
@@ -1169,7 +1161,7 @@ static UniValue ProcessImportDescriptor(ImportData& import_data, std::map<CKeyID
     return warnings;
 }
 
-static UniValue ProcessImport(CWallet * const pwallet, const UniValue& data, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static UniValue ProcessImport(CWallet& wallet, const UniValue& data, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     UniValue warnings(UniValue::VARR);
     UniValue result(UniValue::VOBJ);
@@ -1184,7 +1176,7 @@ static UniValue ProcessImport(CWallet * const pwallet, const UniValue& data, con
         const bool add_keypool = data.exists("keypool") ? data["keypool"].get_bool() : false;
 
         // Add to keypool only works with privkeys disabled
-        if (add_keypool && !pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+        if (add_keypool && !wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
             throw JSONRPCError(RPC_INVALID_PARAMETER, "Keys can only be imported to the keypool when private keys are disabled");
         }
 
@@ -1206,29 +1198,29 @@ static UniValue ProcessImport(CWallet * const pwallet, const UniValue& data, con
         }
 
         // If private keys are disabled, abort if private keys are being imported
-        if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !privkey_map.empty()) {
+        if (wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !privkey_map.empty()) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import private keys to a wallet with private keys disabled");
         }
 
         // Check whether we have any work to do
         for (const CScript& script : script_pub_keys) {
-            if (pwallet->IsMine(script) & ISMINE_SPENDABLE) {
+            if (wallet.IsMine(script) & ISMINE_SPENDABLE) {
                 throw JSONRPCError(RPC_WALLET_ERROR, "The wallet already contains the private key for this address or script (\"" + HexStr(script) + "\")");
             }
         }
 
         // All good, time to import
-        pwallet->MarkDirty();
-        if (!pwallet->ImportScripts(import_data.import_scripts, timestamp)) {
+        wallet.MarkDirty();
+        if (!wallet.ImportScripts(import_data.import_scripts, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding script to wallet");
         }
-        if (!pwallet->ImportPrivKeys(privkey_map, timestamp)) {
+        if (!wallet.ImportPrivKeys(privkey_map, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding key to wallet");
         }
-        if (!pwallet->ImportPubKeys(ordered_pubkeys, pubkey_map, import_data.key_origins, add_keypool, internal, timestamp)) {
+        if (!wallet.ImportPubKeys(ordered_pubkeys, pubkey_map, import_data.key_origins, add_keypool, internal, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding address to wallet");
         }
-        if (!pwallet->ImportScriptPubKeys(label, script_pub_keys, have_solving_data, !internal, timestamp)) {
+        if (!wallet.ImportScriptPubKeys(label, script_pub_keys, have_solving_data, !internal, timestamp)) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Error adding address to wallet");
         }
 
@@ -1336,13 +1328,12 @@ RPCHelpMan importmulti()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& mainRequest) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(mainRequest);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(mainRequest);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(mainRequest.params, {UniValue::VARR, UniValue::VOBJ});
 
-    EnsureLegacyScriptPubKeyMan(*wallet, true);
+    EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
     const UniValue& requests = mainRequest.params[0];
 
@@ -1368,7 +1359,7 @@ RPCHelpMan importmulti()
     UniValue response(UniValue::VARR);
     {
         LOCK(pwallet->cs_wallet);
-        EnsureWalletIsUnlocked(pwallet);
+        EnsureWalletIsUnlocked(*pwallet);
 
         // Verify all timestamps are present before importing any keys.
         CHECK_NONFATAL(pwallet->chain().findBlock(pwallet->GetLastBlockHash(), FoundBlock().time(nLowestTimestamp).mtpTime(now)));
@@ -1380,7 +1371,7 @@ RPCHelpMan importmulti()
 
         for (const UniValue& data : requests.getValues()) {
             const int64_t timestamp = std::max(GetImportTimestamp(data, now), minimumTimestamp);
-            const UniValue result = ProcessImport(pwallet, data, timestamp);
+            const UniValue result = ProcessImport(*pwallet, data, timestamp);
             response.push_back(result);
 
             if (!fRescan) {
@@ -1447,7 +1438,7 @@ RPCHelpMan importmulti()
     };
 }
 
-static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue& data, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static UniValue ProcessDescriptorImport(CWallet& wallet, const UniValue& data, const int64_t timestamp) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     UniValue warnings(UniValue::VARR);
     UniValue result(UniValue::VOBJ);
@@ -1516,7 +1507,7 @@ static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue&
         }
 
         // If the wallet disabled private keys, abort if private keys exist
-        if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !keys.keys.empty()) {
+        if (wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !keys.keys.empty()) {
             throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import private keys to a wallet with private keys disabled");
         }
 
@@ -1540,7 +1531,7 @@ static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue&
         }
 
         // If private keys are enabled, check some things.
-        if (!pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+        if (!wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
            if (keys.keys.empty()) {
                 throw JSONRPCError(RPC_WALLET_ERROR, "Cannot import descriptor without private keys to a wallet with private keys enabled");
            }
@@ -1552,7 +1543,7 @@ static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue&
         WalletDescriptor w_desc(std::move(parsed_desc), timestamp, range_start, range_end, next_index);
 
         // Check if the wallet already contains the descriptor
-        auto existing_spk_manager = pwallet->GetDescriptorScriptPubKeyMan(w_desc);
+        auto existing_spk_manager = wallet.GetDescriptorScriptPubKeyMan(w_desc);
         if (existing_spk_manager) {
             LOCK(existing_spk_manager->cs_desc_man);
             if (range_start > existing_spk_manager->GetWalletDescriptor().range_start) {
@@ -1561,7 +1552,7 @@ static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue&
         }
 
         // Add descriptor to the wallet
-        auto spk_manager = pwallet->AddWalletDescriptor(w_desc, keys, label, internal);
+        auto spk_manager = wallet.AddWalletDescriptor(w_desc, keys, label, internal);
         if (spk_manager == nullptr) {
             throw JSONRPCError(RPC_WALLET_ERROR, strprintf("Could not add descriptor '%s'", descriptor));
         }
@@ -1571,7 +1562,7 @@ static UniValue ProcessDescriptorImport(CWallet * const pwallet, const UniValue&
             if (!w_desc.descriptor->GetOutputType()) {
                 warnings.push_back("Unknown output type, cannot set descriptor to active.");
             } else {
-                pwallet->AddActiveScriptPubKeyMan(spk_manager->GetID(), *w_desc.descriptor->GetOutputType(), internal);
+                wallet.AddActiveScriptPubKeyMan(spk_manager->GetID(), *w_desc.descriptor->GetOutputType(), internal);
             }
         }
 
@@ -1641,9 +1632,8 @@ RPCHelpMan importdescriptors()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& main_request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(main_request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(main_request);
+    if (!pwallet) return NullUniValue;
 
     //  Make sure wallet is a descriptor wallet
     if (!pwallet->IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS)) {
@@ -1665,7 +1655,7 @@ RPCHelpMan importdescriptors()
     UniValue response(UniValue::VARR);
     {
         LOCK(pwallet->cs_wallet);
-        EnsureWalletIsUnlocked(pwallet);
+        EnsureWalletIsUnlocked(*pwallet);
 
         CHECK_NONFATAL(pwallet->chain().findBlock(pwallet->GetLastBlockHash(), FoundBlock().time(lowest_timestamp).mtpTime(now)));
 
@@ -1673,7 +1663,7 @@ RPCHelpMan importdescriptors()
         for (const UniValue& request : requests.getValues()) {
             // This throws an error if "timestamp" doesn't exist
             const int64_t timestamp = std::max(GetImportTimestamp(request, now), minimum_timestamp);
-            const UniValue result = ProcessDescriptorImport(pwallet, request, timestamp);
+            const UniValue result = ProcessDescriptorImport(*pwallet, request, timestamp);
             response.push_back(result);
 
             if (lowest_timestamp > timestamp ) {
@@ -1775,7 +1765,7 @@ RPCHelpMan listdescriptors()
         throw JSONRPCError(RPC_WALLET_ERROR, "listdescriptors is not available for non-descriptor wallets");
     }
 
-    EnsureWalletIsUnlocked(wallet.get());
+    EnsureWalletIsUnlocked(*wallet);
 
     LOCK(wallet->cs_wallet);
 
diff --git a/src/wallet/rpcwallet.cpp b/src/wallet/rpcwallet.cpp
index 6d6cdedb2b..8b0962f9ee 100644
--- a/src/wallet/rpcwallet.cpp
+++ b/src/wallet/rpcwallet.cpp
@@ -48,8 +48,8 @@ using interfaces::FoundBlock;
 static const std::string WALLET_ENDPOINT_BASE = "/wallet/";
 static const std::string HELP_REQUIRING_PASSPHRASE{"\nRequires wallet passphrase to be set with walletpassphrase call if wallet is encrypted.\n"};
 
-static inline bool GetAvoidReuseFlag(const CWallet* const pwallet, const UniValue& param) {
-    bool can_avoid_reuse = pwallet->IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE);
+static inline bool GetAvoidReuseFlag(const CWallet& wallet, const UniValue& param) {
+    bool can_avoid_reuse = wallet.IsWalletFlagSet(WALLET_FLAG_AVOID_REUSE);
     bool avoid_reuse = param.isNull() ? can_avoid_reuse : param.get_bool();
 
     if (avoid_reuse && !can_avoid_reuse) {
@@ -64,11 +64,11 @@ static inline bool GetAvoidReuseFlag(const CWallet* const pwallet, const UniValu
  *  We default to true for watchonly wallets if include_watchonly isn't
  *  explicitly set.
  */
-static bool ParseIncludeWatchonly(const UniValue& include_watchonly, const CWallet& pwallet)
+static bool ParseIncludeWatchonly(const UniValue& include_watchonly, const CWallet& wallet)
 {
     if (include_watchonly.isNull()) {
         // if include_watchonly isn't explicitly set, then check if we have a watchonly wallet
-        return pwallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
+        return wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS);
     }
 
     // otherwise return whatever include_watchonly was set to
@@ -117,9 +117,9 @@ std::shared_ptr<CWallet> GetWalletForJSONRPCRequest(const JSONRPCRequest& reques
         "Wallet file not specified (must request wallet RPC through /wallet/<filename> uri-path).");
 }
 
-void EnsureWalletIsUnlocked(const CWallet* pwallet)
+void EnsureWalletIsUnlocked(const CWallet& wallet)
 {
-    if (pwallet->IsLocked()) {
+    if (wallet.IsLocked()) {
         throw JSONRPCError(RPC_WALLET_UNLOCK_NEEDED, "Error: Please enter the wallet passphrase with walletpassphrase first.");
     }
 }
@@ -249,9 +249,8 @@ static RPCHelpMan getnewaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -299,9 +298,8 @@ static RPCHelpMan getrawchangeaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -342,9 +340,8 @@ static RPCHelpMan setlabel()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -396,13 +393,13 @@ void ParseRecipients(const UniValue& address_amounts, const UniValue& subtract_f
     }
 }
 
-UniValue SendMoney(CWallet* const pwallet, const CCoinControl &coin_control, std::vector<CRecipient> &recipients, mapValue_t map_value, bool verbose)
+UniValue SendMoney(CWallet& wallet, const CCoinControl &coin_control, std::vector<CRecipient> &recipients, mapValue_t map_value, bool verbose)
 {
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(wallet);
 
     // This function is only used by sendtoaddress and sendmany.
     // This should always try to sign, if we don't have private keys, don't try to do anything here.
-    if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
+    if (wallet.IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet");
     }
 
@@ -415,11 +412,11 @@ UniValue SendMoney(CWallet* const pwallet, const CCoinControl &coin_control, std
     bilingual_str error;
     CTransactionRef tx;
     FeeCalculation fee_calc_out;
-    const bool fCreated = pwallet->CreateTransaction(recipients, tx, nFeeRequired, nChangePosRet, error, coin_control, fee_calc_out, true);
+    const bool fCreated = wallet.CreateTransaction(recipients, tx, nFeeRequired, nChangePosRet, error, coin_control, fee_calc_out, true);
     if (!fCreated) {
         throw JSONRPCError(RPC_WALLET_INSUFFICIENT_FUNDS, error.original);
     }
-    pwallet->CommitTransaction(tx, std::move(map_value), {} /* orderForm */);
+    wallet.CommitTransaction(tx, std::move(map_value), {} /* orderForm */);
     if (verbose) {
         UniValue entry(UniValue::VOBJ);
         entry.pushKV("txid", tx->GetHash().GetHex());
@@ -480,9 +477,8 @@ static RPCHelpMan sendtoaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -507,13 +503,13 @@ static RPCHelpMan sendtoaddress()
         coin_control.m_signal_bip125_rbf = request.params[5].get_bool();
     }
 
-    coin_control.m_avoid_address_reuse = GetAvoidReuseFlag(pwallet, request.params[8]);
+    coin_control.m_avoid_address_reuse = GetAvoidReuseFlag(*pwallet, request.params[8]);
     // We also enable partial spend avoidance if reuse avoidance is set.
     coin_control.m_avoid_partial_spends |= coin_control.m_avoid_address_reuse;
 
     SetFeeEstimateMode(*pwallet, coin_control, /* conf_target */ request.params[6], /* estimate_mode */ request.params[7], /* fee_rate */ request.params[9], /* override_min_fee */ false);
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     UniValue address_amounts(UniValue::VOBJ);
     const std::string address = request.params[0].get_str();
@@ -527,7 +523,7 @@ static RPCHelpMan sendtoaddress()
     ParseRecipients(address_amounts, subtractFeeFromAmount, recipients);
     const bool verbose{request.params[10].isNull() ? false : request.params[10].get_bool()};
 
-    return SendMoney(pwallet, coin_control, recipients, mapValue, verbose);
+    return SendMoney(*pwallet, coin_control, recipients, mapValue, verbose);
 },
     };
 }
@@ -559,9 +555,8 @@ static RPCHelpMan listaddressgroupings()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -617,13 +612,12 @@ static RPCHelpMan signmessage()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     std::string strAddress = request.params[0].get_str();
     std::string strMessage = request.params[1].get_str();
@@ -720,9 +714,8 @@ static RPCHelpMan getreceivedbyaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -759,9 +752,8 @@ static RPCHelpMan getreceivedbylabel()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -800,9 +792,8 @@ static RPCHelpMan getbalance()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -822,7 +813,7 @@ static RPCHelpMan getbalance()
 
     bool include_watchonly = ParseIncludeWatchonly(request.params[2], *pwallet);
 
-    bool avoid_reuse = GetAvoidReuseFlag(pwallet, request.params[3]);
+    bool avoid_reuse = GetAvoidReuseFlag(*pwallet, request.params[3]);
 
     const auto bal = pwallet->GetBalance(min_depth, avoid_reuse);
 
@@ -840,9 +831,8 @@ static RPCHelpMan getunconfirmedbalance()
                 RPCExamples{""},
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -911,9 +901,8 @@ static RPCHelpMan sendmany()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -945,7 +934,7 @@ static RPCHelpMan sendmany()
     ParseRecipients(sendTo, subtractFeeFromAmount, recipients);
     const bool verbose{request.params[9].isNull() ? false : request.params[9].get_bool()};
 
-    return SendMoney(pwallet, coin_control, recipients, std::move(mapValue), verbose);
+    return SendMoney(*pwallet, coin_control, recipients, std::move(mapValue), verbose);
 },
     };
 }
@@ -985,9 +974,8 @@ static RPCHelpMan addmultisigaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LegacyScriptPubKeyMan& spk_man = EnsureLegacyScriptPubKeyMan(*pwallet);
 
@@ -1045,7 +1033,7 @@ struct tallyitem
     }
 };
 
-static UniValue ListReceived(const CWallet* const pwallet, const UniValue& params, bool by_label) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static UniValue ListReceived(const CWallet& wallet, const UniValue& params, bool by_label) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     // Minimum confirmations
     int nMinDepth = 1;
@@ -1059,7 +1047,7 @@ static UniValue ListReceived(const CWallet* const pwallet, const UniValue& param
 
     isminefilter filter = ISMINE_SPENDABLE;
 
-    if (ParseIncludeWatchonly(params[2], *pwallet)) {
+    if (ParseIncludeWatchonly(params[2], wallet)) {
         filter |= ISMINE_WATCH_ONLY;
     }
 
@@ -1075,10 +1063,10 @@ static UniValue ListReceived(const CWallet* const pwallet, const UniValue& param
 
     // Tally
     std::map<CTxDestination, tallyitem> mapTally;
-    for (const std::pair<const uint256, CWalletTx>& pairWtx : pwallet->mapWallet) {
+    for (const std::pair<const uint256, CWalletTx>& pairWtx : wallet.mapWallet) {
         const CWalletTx& wtx = pairWtx.second;
 
-        if (wtx.IsCoinBase() || !pwallet->chain().checkFinalTx(*wtx.tx)) {
+        if (wtx.IsCoinBase() || !wallet.chain().checkFinalTx(*wtx.tx)) {
             continue;
         }
 
@@ -1096,7 +1084,7 @@ static UniValue ListReceived(const CWallet* const pwallet, const UniValue& param
                 continue;
             }
 
-            isminefilter mine = pwallet->IsMine(address);
+            isminefilter mine = wallet.IsMine(address);
             if(!(mine & filter))
                 continue;
 
@@ -1115,11 +1103,11 @@ static UniValue ListReceived(const CWallet* const pwallet, const UniValue& param
 
     // Create m_address_book iterator
     // If we aren't filtering, go from begin() to end()
-    auto start = pwallet->m_address_book.begin();
-    auto end = pwallet->m_address_book.end();
+    auto start = wallet.m_address_book.begin();
+    auto end = wallet.m_address_book.end();
     // If we are filtering, find() the applicable entry
     if (has_filtered_address) {
-        start = pwallet->m_address_book.find(filtered_address);
+        start = wallet.m_address_book.find(filtered_address);
         if (start != end) {
             end = std::next(start);
         }
@@ -1227,9 +1215,8 @@ static RPCHelpMan listreceivedbyaddress()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1237,7 +1224,7 @@ static RPCHelpMan listreceivedbyaddress()
 
     LOCK(pwallet->cs_wallet);
 
-    return ListReceived(pwallet, request.params, false);
+    return ListReceived(*pwallet, request.params, false);
 },
     };
 }
@@ -1270,9 +1257,8 @@ static RPCHelpMan listreceivedbylabel()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1280,7 +1266,7 @@ static RPCHelpMan listreceivedbylabel()
 
     LOCK(pwallet->cs_wallet);
 
-    return ListReceived(pwallet, request.params, true);
+    return ListReceived(*pwallet, request.params, true);
 },
     };
 }
@@ -1303,7 +1289,7 @@ static void MaybePushAddress(UniValue & entry, const CTxDestination &dest)
  * @param  filter_ismine  The "is mine" filter flags.
  * @param  filter_label   Optional label string to filter incoming transactions.
  */
-static void ListTransactions(const CWallet* const pwallet, const CWalletTx& wtx, int nMinDepth, bool fLong, UniValue& ret, const isminefilter& filter_ismine, const std::string* filter_label) EXCLUSIVE_LOCKS_REQUIRED(pwallet->cs_wallet)
+static void ListTransactions(const CWallet& wallet, const CWalletTx& wtx, int nMinDepth, bool fLong, UniValue& ret, const isminefilter& filter_ismine, const std::string* filter_label) EXCLUSIVE_LOCKS_REQUIRED(wallet.cs_wallet)
 {
     CAmount nFee;
     std::list<COutputEntry> listReceived;
@@ -1319,20 +1305,20 @@ static void ListTransactions(const CWallet* const pwallet, const CWalletTx& wtx,
         for (const COutputEntry& s : listSent)
         {
             UniValue entry(UniValue::VOBJ);
-            if (involvesWatchonly || (pwallet->IsMine(s.destination) & ISMINE_WATCH_ONLY)) {
+            if (involvesWatchonly || (wallet.IsMine(s.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, s.destination);
             entry.pushKV("category", "send");
             entry.pushKV("amount", ValueFromAmount(-s.amount));
-            const auto* address_book_entry = pwallet->FindAddressBookEntry(s.destination);
+            const auto* address_book_entry = wallet.FindAddressBookEntry(s.destination);
             if (address_book_entry) {
                 entry.pushKV("label", address_book_entry->GetLabel());
             }
             entry.pushKV("vout", s.vout);
             entry.pushKV("fee", ValueFromAmount(-nFee));
             if (fLong)
-                WalletTxToJSON(pwallet->chain(), wtx, entry);
+                WalletTxToJSON(wallet.chain(), wtx, entry);
             entry.pushKV("abandoned", wtx.isAbandoned());
             ret.push_back(entry);
         }
@@ -1343,7 +1329,7 @@ static void ListTransactions(const CWallet* const pwallet, const CWalletTx& wtx,
         for (const COutputEntry& r : listReceived)
         {
             std::string label;
-            const auto* address_book_entry = pwallet->FindAddressBookEntry(r.destination);
+            const auto* address_book_entry = wallet.FindAddressBookEntry(r.destination);
             if (address_book_entry) {
                 label = address_book_entry->GetLabel();
             }
@@ -1351,7 +1337,7 @@ static void ListTransactions(const CWallet* const pwallet, const CWalletTx& wtx,
                 continue;
             }
             UniValue entry(UniValue::VOBJ);
-            if (involvesWatchonly || (pwallet->IsMine(r.destination) & ISMINE_WATCH_ONLY)) {
+            if (involvesWatchonly || (wallet.IsMine(r.destination) & ISMINE_WATCH_ONLY)) {
                 entry.pushKV("involvesWatchonly", true);
             }
             MaybePushAddress(entry, r.destination);
@@ -1374,7 +1360,7 @@ static void ListTransactions(const CWallet* const pwallet, const CWalletTx& wtx,
             }
             entry.pushKV("vout", r.vout);
             if (fLong)
-                WalletTxToJSON(pwallet->chain(), wtx, entry);
+                WalletTxToJSON(wallet.chain(), wtx, entry);
             ret.push_back(entry);
         }
     }
@@ -1451,9 +1437,8 @@ static RPCHelpMan listtransactions()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1494,7 +1479,7 @@ static RPCHelpMan listtransactions()
         for (CWallet::TxItems::const_reverse_iterator it = txOrdered.rbegin(); it != txOrdered.rend(); ++it)
         {
             CWalletTx *const pwtx = (*it).second;
-            ListTransactions(pwallet, *pwtx, 0, true, ret, filter, filter_label);
+            ListTransactions(*pwallet, *pwtx, 0, true, ret, filter, filter_label);
             if ((int)ret.size() >= (nCount+nFrom)) break;
         }
     }
@@ -1616,7 +1601,7 @@ static RPCHelpMan listsinceblock()
         const CWalletTx& tx = pairWtx.second;
 
         if (depth == -1 || abs(tx.GetDepthInMainChain()) < depth) {
-            ListTransactions(&wallet, tx, 0, true, transactions, filter, nullptr /* filter_label */);
+            ListTransactions(wallet, tx, 0, true, transactions, filter, nullptr /* filter_label */);
         }
     }
 
@@ -1633,7 +1618,7 @@ static RPCHelpMan listsinceblock()
             if (it != wallet.mapWallet.end()) {
                 // We want all transactions regardless of confirmation count to appear here,
                 // even negative confirmation ones, hence the big negative.
-                ListTransactions(&wallet, it->second, -100000000, true, removed, filter, nullptr /* filter_label */);
+                ListTransactions(wallet, it->second, -100000000, true, removed, filter, nullptr /* filter_label */);
             }
         }
         blockId = block.hashPrevBlock;
@@ -1710,9 +1695,8 @@ static RPCHelpMan gettransaction()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1749,7 +1733,7 @@ static RPCHelpMan gettransaction()
     WalletTxToJSON(pwallet->chain(), wtx, entry);
 
     UniValue details(UniValue::VARR);
-    ListTransactions(pwallet, wtx, 0, false, details, filter, nullptr /* filter_label */);
+    ListTransactions(*pwallet, wtx, 0, false, details, filter, nullptr /* filter_label */);
     entry.pushKV("details", details);
 
     std::string strHex = EncodeHexTx(*wtx.tx, pwallet->chain().rpcSerializationFlags());
@@ -1784,9 +1768,8 @@ static RPCHelpMan abandontransaction()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1823,9 +1806,8 @@ static RPCHelpMan backupwallet()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -1859,9 +1841,8 @@ static RPCHelpMan keypoolrefill()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     if (pwallet->IsLegacy() && pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS)) {
         throw JSONRPCError(RPC_WALLET_ERROR, "Error: Private keys are disabled for this wallet");
@@ -1877,7 +1858,7 @@ static RPCHelpMan keypoolrefill()
         kpSize = (unsigned int)request.params[0].get_int();
     }
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
     pwallet->TopUpKeyPool(kpSize);
 
     if (pwallet->GetKeyPoolSize() < kpSize) {
@@ -2001,9 +1982,8 @@ static RPCHelpMan walletpassphrasechange()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -2055,9 +2035,8 @@ static RPCHelpMan walletlock()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -2100,9 +2079,8 @@ static RPCHelpMan encryptwallet()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -2174,9 +2152,8 @@ static RPCHelpMan lockunspent()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -2289,9 +2266,8 @@ static RPCHelpMan listlockunspent()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -2330,9 +2306,8 @@ static RPCHelpMan settxfee()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -2460,9 +2435,8 @@ static RPCHelpMan getwalletinfo()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
@@ -2672,9 +2646,8 @@ static RPCHelpMan setwalletflag()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     std::string flag_str = request.params[0].get_str();
     bool value = request.params[1].isNull() || request.params[1].get_bool();
@@ -2916,9 +2889,8 @@ static RPCHelpMan listunspent()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     int nMinDepth = 1;
     if (!request.params[0].isNull()) {
@@ -3080,11 +3052,11 @@ static RPCHelpMan listunspent()
     };
 }
 
-void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& fee_out, int& change_position, const UniValue& options, CCoinControl& coinControl, bool override_min_fee)
+void FundTransaction(CWallet& wallet, CMutableTransaction& tx, CAmount& fee_out, int& change_position, const UniValue& options, CCoinControl& coinControl, bool override_min_fee)
 {
     // Make sure the results are valid at least up to the most recent block
     // the user could have gotten from another RPC command prior to now
-    pwallet->BlockUntilSyncedToCurrentChain();
+    wallet.BlockUntilSyncedToCurrentChain();
 
     change_position = -1;
     bool lockUnspents = false;
@@ -3155,7 +3127,7 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f
         }
 
         const UniValue include_watching_option = options.exists("include_watching") ? options["include_watching"] : options["includeWatching"];
-        coinControl.fAllowWatchOnly = ParseIncludeWatchonly(include_watching_option, *pwallet);
+        coinControl.fAllowWatchOnly = ParseIncludeWatchonly(include_watching_option, wallet);
 
         if (options.exists("lockUnspents") || options.exists("lock_unspents")) {
             lockUnspents = (options.exists("lock_unspents") ? options["lock_unspents"] : options["lockUnspents"]).get_bool();
@@ -3181,11 +3153,11 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f
         if (options.exists("replaceable")) {
             coinControl.m_signal_bip125_rbf = options["replaceable"].get_bool();
         }
-        SetFeeEstimateMode(*pwallet, coinControl, options["conf_target"], options["estimate_mode"], options["fee_rate"], override_min_fee);
+        SetFeeEstimateMode(wallet, coinControl, options["conf_target"], options["estimate_mode"], options["fee_rate"], override_min_fee);
       }
     } else {
         // if options is null and not a bool
-        coinControl.fAllowWatchOnly = ParseIncludeWatchonly(NullUniValue, *pwallet);
+        coinControl.fAllowWatchOnly = ParseIncludeWatchonly(NullUniValue, wallet);
     }
 
     if (tx.vout.size() == 0)
@@ -3207,7 +3179,7 @@ void FundTransaction(CWallet* const pwallet, CMutableTransaction& tx, CAmount& f
 
     bilingual_str error;
 
-    if (!pwallet->FundTransaction(tx, fee_out, change_position, error, lockUnspents, setSubtractFeeFromOutputs, coinControl)) {
+    if (!wallet.FundTransaction(tx, fee_out, change_position, error, lockUnspents, setSubtractFeeFromOutputs, coinControl)) {
         throw JSONRPCError(RPC_WALLET_ERROR, error.original);
     }
 }
@@ -3283,9 +3255,8 @@ static RPCHelpMan fundrawtransaction()
                                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(request.params, {UniValue::VSTR, UniValueType(), UniValue::VBOOL});
 
@@ -3302,7 +3273,7 @@ static RPCHelpMan fundrawtransaction()
     CCoinControl coin_control;
     // Automatically select (additional) coins. Can be overridden by options.add_inputs.
     coin_control.m_add_inputs = true;
-    FundTransaction(pwallet, tx, fee, change_position, request.params[1], coin_control, /* override_min_fee */ true);
+    FundTransaction(*pwallet, tx, fee, change_position, request.params[1], coin_control, /* override_min_fee */ true);
 
     UniValue result(UniValue::VOBJ);
     result.pushKV("hex", EncodeHexTx(CTransaction(tx)));
@@ -3369,9 +3340,8 @@ RPCHelpMan signrawtransactionwithwallet()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VARR, UniValue::VSTR}, true);
 
@@ -3382,7 +3352,7 @@ RPCHelpMan signrawtransactionwithwallet()
 
     // Sign the transaction
     LOCK(pwallet->cs_wallet);
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     // Fetch previous transactions (inputs):
     std::map<COutPoint, Coin> coins;
@@ -3469,9 +3439,8 @@ static RPCHelpMan bumpfee_helper(std::string method_name)
         },
         [want_psbt](const RPCHelpMan& self, const JSONRPCRequest& request) mutable -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     if (pwallet->IsWalletFlagSet(WALLET_FLAG_DISABLE_PRIVATE_KEYS) && !want_psbt) {
         throw JSONRPCError(RPC_WALLET_ERROR, "bumpfee is not available with wallets that have private keys disabled. Use psbtbumpfee instead.");
@@ -3514,7 +3483,8 @@ static RPCHelpMan bumpfee_helper(std::string method_name)
     pwallet->BlockUntilSyncedToCurrentChain();
 
     LOCK(pwallet->cs_wallet);
-    EnsureWalletIsUnlocked(pwallet);
+
+    EnsureWalletIsUnlocked(*pwallet);
 
 
     std::vector<bilingual_str> errors;
@@ -3608,9 +3578,8 @@ static RPCHelpMan rescanblockchain()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     WalletRescanReserver reserver(*pwallet);
     if (!reserver.reserve()) {
@@ -3759,15 +3728,13 @@ public:
     UniValue operator()(const WitnessUnknown& id) const { return UniValue(UniValue::VOBJ); }
 };
 
-static UniValue DescribeWalletAddress(const CWallet* const pwallet, const CTxDestination& dest)
+static UniValue DescribeWalletAddress(const CWallet& wallet, const CTxDestination& dest)
 {
     UniValue ret(UniValue::VOBJ);
     UniValue detail = DescribeAddress(dest);
     CScript script = GetScriptForDestination(dest);
     std::unique_ptr<SigningProvider> provider = nullptr;
-    if (pwallet) {
-        provider = pwallet->GetSolvingProvider(script);
-    }
+    provider = wallet.GetSolvingProvider(script);
     ret.pushKVs(detail);
     ret.pushKVs(std::visit(DescribeWalletAddressVisitor(provider.get()), dest));
     return ret;
@@ -3840,9 +3807,8 @@ RPCHelpMan getaddressinfo()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -3887,7 +3853,7 @@ RPCHelpMan getaddressinfo()
 
     ret.pushKV("iswatchonly", bool(mine & ISMINE_WATCH_ONLY));
 
-    UniValue detail = DescribeWalletAddress(pwallet, dest);
+    UniValue detail = DescribeWalletAddress(*pwallet, dest);
     ret.pushKVs(detail);
 
     ret.pushKV("ischange", pwallet->IsChange(scriptPubKey));
@@ -3943,9 +3909,8 @@ static RPCHelpMan getaddressesbylabel()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -4005,9 +3970,8 @@ static RPCHelpMan listlabels()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LOCK(pwallet->cs_wallet);
 
@@ -4130,9 +4094,8 @@ static RPCHelpMan send()
                 }, true
             );
 
-            std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-            if (!wallet) return NullUniValue;
-            CWallet* const pwallet = wallet.get();
+            std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+            if (!pwallet) return NullUniValue;
 
             UniValue options{request.params[4].isNull() ? UniValue::VOBJ : request.params[4]};
             if (options.exists("conf_target") || options.exists("estimate_mode")) {
@@ -4185,7 +4148,7 @@ static RPCHelpMan send()
             // Automatically select coins, unless at least one is manually selected. Can
             // be overridden by options.add_inputs.
             coin_control.m_add_inputs = rawTx.vin.size() == 0;
-            FundTransaction(pwallet, rawTx, fee, change_position, options, coin_control, /* override_min_fee */ false);
+            FundTransaction(*pwallet, rawTx, fee, change_position, options, coin_control, /* override_min_fee */ false);
 
             bool add_to_wallet = true;
             if (options.exists("add_to_wallet")) {
@@ -4258,9 +4221,8 @@ static RPCHelpMan sethdseed()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     LegacyScriptPubKeyMan& spk_man = EnsureLegacyScriptPubKeyMan(*pwallet, true);
 
@@ -4275,7 +4237,7 @@ static RPCHelpMan sethdseed()
         throw JSONRPCError(RPC_WALLET_ERROR, "Cannot set an HD seed on a non-HD wallet. Use the upgradewallet RPC in order to upgrade a non-HD wallet to HD");
     }
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     bool flush_key_pool = true;
     if (!request.params[0].isNull()) {
@@ -4336,9 +4298,8 @@ static RPCHelpMan walletprocesspsbt()
                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    const CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(request.params, {UniValue::VSTR, UniValue::VBOOL, UniValue::VSTR});
 
@@ -4448,9 +4409,8 @@ static RPCHelpMan walletcreatefundedpsbt()
                                 },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(request.params, {
         UniValue::VARR,
@@ -4474,7 +4434,7 @@ static RPCHelpMan walletcreatefundedpsbt()
     // Automatically select coins, unless at least one is manually selected. Can
     // be overridden by options.add_inputs.
     coin_control.m_add_inputs = rawTx.vin.size() == 0;
-    FundTransaction(pwallet, rawTx, fee, change_position, request.params[3], coin_control, /* override_min_fee */ true);
+    FundTransaction(*pwallet, rawTx, fee, change_position, request.params[3], coin_control, /* override_min_fee */ true);
 
     // Make a blank psbt
     PartiallySignedTransaction psbtx(rawTx);
@@ -4524,13 +4484,12 @@ static RPCHelpMan upgradewallet()
         },
         [&](const RPCHelpMan& self, const JSONRPCRequest& request) -> UniValue
 {
-    std::shared_ptr<CWallet> const wallet = GetWalletForJSONRPCRequest(request);
-    if (!wallet) return NullUniValue;
-    CWallet* const pwallet = wallet.get();
+    std::shared_ptr<CWallet> const pwallet = GetWalletForJSONRPCRequest(request);
+    if (!pwallet) return NullUniValue;
 
     RPCTypeCheck(request.params, {UniValue::VNUM}, true);
 
-    EnsureWalletIsUnlocked(pwallet);
+    EnsureWalletIsUnlocked(*pwallet);
 
     int version = 0;
     if (!request.params[0].isNull()) {
diff --git a/src/wallet/rpcwallet.h b/src/wallet/rpcwallet.h
index 184a16e91d..b82fe1ec76 100644
--- a/src/wallet/rpcwallet.h
+++ b/src/wallet/rpcwallet.h
@@ -30,7 +30,7 @@ Span<const CRPCCommand> GetWalletRPCCommands();
  */
 std::shared_ptr<CWallet> GetWalletForJSONRPCRequest(const JSONRPCRequest& request);
 
-void EnsureWalletIsUnlocked(const CWallet*);
+void EnsureWalletIsUnlocked(const CWallet&);
 WalletContext& EnsureWalletContext(const util::Ref& context);
 LegacyScriptPubKeyMan& EnsureLegacyScriptPubKeyMan(CWallet& wallet, bool also_create = false);