Merge #19046: Replace CWallet::Set* functions that use memonly with Add/Load variants

3a9aba21a49a6d80bd187940d5e26893937b6832 Split SetWalletFlags into Add/LoadWalletFlags (Andrew Chow)
d9cd095b5965fc20c09f401370e7ba99446663e3 Split SetActiveScriptPubKeyMan into Add/LoadActiveScriptPubKeyMan (Andrew Chow)
0122fbab4c340b23ae56173de6c5ab866ba25ab8 Split SetHDChain into AddHDChain and LoadHDChain (Andrew Chow)

Pull request description:

  `SetHDChaiin`, `SetActiveScriptPubKeyMan`, and `SetWalletFlags` have a `memonly` argument which is kind of confusing, as noted in https://github.com/bitcoin/bitcoin/pull/17681#discussion_r427633081. This PR replaces those functions with `Add*` and `Load*` variants so that they follow the pattern used elsewhere in the wallet.

  `AddHDChain`, `AddActiveScriptPubKeyMan`, and `AddWalletFlags` both set their respective variables in `CWallet` and writes them to disk. These functions are used by the actions which modify the wallet such as `sethdseed`, `importdescriptors`, and creating a new wallet.

  `LoadHDChain`, `LoadActiveScriptPubKeyMan`, and `LoadWalletFlags` just set the `CWallet` variables. These functions are used by `LoadWallet` when loading the wallet from disk.

ACKs for top commit:
  jnewbery:
    Code review ACK 3a9aba21a49a6d80bd187940d5e26893937b6832
  ryanofsky:
    Code review ACK 3a9aba21a49a6d80bd187940d5e26893937b6832. Only changes since last review tweaks making m_wallet_flags updates more safe
  meshcollider:
    utACK 3a9aba21a49a6d80bd187940d5e26893937b6832

Tree-SHA512: 365aeaafc5ba42879c0eb797ec3beb29ab70e27f917dc880763f743420b3be6ddf797240996beed8a9ad70fb212c2590253c6b44c9dc244529c3939d9538983f

6 files changed, 61 insertions, 38 deletions

diff --git a/src/wallet/rpcdump.cpp b/src/wallet/rpcdump.cpp
index c9ea6c2ad9..3b752ca936 100644
--- a/src/wallet/rpcdump.cpp
+++ b/src/wallet/rpcdump.cpp
@@ -1547,7 +1547,7 @@ 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->SetActiveScriptPubKeyMan(spk_manager->GetID(), *w_desc.descriptor->GetOutputType(), internal);
+                pwallet->AddActiveScriptPubKeyMan(spk_manager->GetID(), *w_desc.descriptor->GetOutputType(), internal);
             }
         }
 
diff --git a/src/wallet/scriptpubkeyman.cpp b/src/wallet/scriptpubkeyman.cpp
index 38d94335a3..51715462c5 100644
--- a/src/wallet/scriptpubkeyman.cpp
+++ b/src/wallet/scriptpubkeyman.cpp
@@ -905,20 +905,22 @@ bool LegacyScriptPubKeyMan::AddWatchOnly(const CScript& dest, int64_t nCreateTim
     return AddWatchOnly(dest);
 }
 
-void LegacyScriptPubKeyMan::SetHDChain(const CHDChain& chain, bool memonly)
+void LegacyScriptPubKeyMan::LoadHDChain(const CHDChain& chain)
 {
     LOCK(cs_KeyStore);
-    // memonly == true means we are loading the wallet file
-    // memonly == false means that the chain is actually being changed
-    if (!memonly) {
-        // Store the new chain
-        if (!WalletBatch(m_storage.GetDatabase()).WriteHDChain(chain)) {
-            throw std::runtime_error(std::string(__func__) + ": writing chain failed");
-        }
-        // When there's an old chain, add it as an inactive chain as we are now rotating hd chains
-        if (!m_hd_chain.seed_id.IsNull()) {
-            AddInactiveHDChain(m_hd_chain);
-        }
+    m_hd_chain = chain;
+}
+
+void LegacyScriptPubKeyMan::AddHDChain(const CHDChain& chain)
+{
+    LOCK(cs_KeyStore);
+    // Store the new chain
+    if (!WalletBatch(m_storage.GetDatabase()).WriteHDChain(chain)) {
+        throw std::runtime_error(std::string(__func__) + ": writing chain failed");
+    }
+    // When there's an old chain, add it as an inactive chain as we are now rotating hd chains
+    if (!m_hd_chain.seed_id.IsNull()) {
+        AddInactiveHDChain(m_hd_chain);
     }
 
     m_hd_chain = chain;
@@ -1172,7 +1174,7 @@ void LegacyScriptPubKeyMan::SetHDSeed(const CPubKey& seed)
     CHDChain newHdChain;
     newHdChain.nVersion = m_storage.CanSupportFeature(FEATURE_HD_SPLIT) ? CHDChain::VERSION_HD_CHAIN_SPLIT : CHDChain::VERSION_HD_BASE;
     newHdChain.seed_id = seed.GetID();
-    SetHDChain(newHdChain, false);
+    AddHDChain(newHdChain);
     NotifyCanGetAddressesChanged();
     WalletBatch batch(m_storage.GetDatabase());
     m_storage.UnsetBlankWalletFlag(batch);
diff --git a/src/wallet/scriptpubkeyman.h b/src/wallet/scriptpubkeyman.h
index 9fa2a68284..a96d971734 100644
--- a/src/wallet/scriptpubkeyman.h
+++ b/src/wallet/scriptpubkeyman.h
@@ -422,8 +422,10 @@ public:
     //! Generate a new key
     CPubKey GenerateNewKey(WalletBatch& batch, CHDChain& hd_chain, bool internal = false) EXCLUSIVE_LOCKS_REQUIRED(cs_KeyStore);
 
-    /* Set the HD chain model (chain child index counters) */
-    void SetHDChain(const CHDChain& chain, bool memonly);
+    /* Set the HD chain model (chain child index counters) and writes it to the database */
+    void AddHDChain(const CHDChain& chain);
+    //! Load a HD chain model (used by LoadWallet)
+    void LoadHDChain(const CHDChain& chain);
     const CHDChain& GetHDChain() const { return m_hd_chain; }
     void AddInactiveHDChain(const CHDChain& chain);
 
diff --git a/src/wallet/wallet.cpp b/src/wallet/wallet.cpp
index 9e46558f15..256fd753db 100644
--- a/src/wallet/wallet.cpp
+++ b/src/wallet/wallet.cpp
@@ -1422,19 +1422,28 @@ bool CWallet::IsWalletFlagSet(uint64_t flag) const
     return (m_wallet_flags & flag);
 }
 
-bool CWallet::SetWalletFlags(uint64_t overwriteFlags, bool memonly)
+bool CWallet::LoadWalletFlags(uint64_t flags)
 {
     LOCK(cs_wallet);
-    m_wallet_flags = overwriteFlags;
-    if (((overwriteFlags & KNOWN_WALLET_FLAGS) >> 32) ^ (overwriteFlags >> 32)) {
+    if (((flags & KNOWN_WALLET_FLAGS) >> 32) ^ (flags >> 32)) {
         // contains unknown non-tolerable wallet flags
         return false;
     }
-    if (!memonly && !WalletBatch(*database).WriteWalletFlags(m_wallet_flags)) {
+    m_wallet_flags = flags;
+
+    return true;
+}
+
+bool CWallet::AddWalletFlags(uint64_t flags)
+{
+    LOCK(cs_wallet);
+    // We should never be writing unknown onon-tolerable wallet flags
+    assert(!(((flags & KNOWN_WALLET_FLAGS) >> 32) ^ (flags >> 32)));
+    if (!WalletBatch(*database).WriteWalletFlags(flags)) {
         throw std::runtime_error(std::string(__func__) + ": writing wallet flags failed");
     }
 
-    return true;
+    return LoadWalletFlags(flags);
 }
 
 int64_t CWalletTx::GetTxTime() const
@@ -3798,7 +3807,7 @@ std::shared_ptr<CWallet> CWallet::CreateWalletFromFile(interfaces::Chain& chain,
         // ensure this wallet.dat can only be opened by clients supporting HD with chain split and expects no default key
         walletInstance->SetMinVersion(FEATURE_LATEST);
 
-        walletInstance->SetWalletFlags(wallet_creation_flags, false);
+        walletInstance->AddWalletFlags(wallet_creation_flags);
 
         // Only create LegacyScriptPubKeyMan when not descriptor wallet
         if (!walletInstance->IsWalletFlagSet(WALLET_FLAG_DESCRIPTORS)) {
@@ -4419,12 +4428,21 @@ void CWallet::SetupDescriptorScriptPubKeyMans()
             spk_manager->SetupDescriptorGeneration(master_key, t);
             uint256 id = spk_manager->GetID();
             m_spk_managers[id] = std::move(spk_manager);
-            SetActiveScriptPubKeyMan(id, t, internal);
+            AddActiveScriptPubKeyMan(id, t, internal);
         }
     }
 }
 
-void CWallet::SetActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal, bool memonly)
+void CWallet::AddActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal)
+{
+    WalletBatch batch(*database);
+    if (!batch.WriteActiveScriptPubKeyMan(static_cast<uint8_t>(type), id, internal)) {
+        throw std::runtime_error(std::string(__func__) + ": writing active ScriptPubKeyMan id failed");
+    }
+    LoadActiveScriptPubKeyMan(id, type, internal);
+}
+
+void CWallet::LoadActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal)
 {
     WalletLogPrintf("Setting spkMan to active: id = %s, type = %d, internal = %d\n", id.ToString(), static_cast<int>(type), static_cast<int>(internal));
     auto& spk_mans = internal ? m_internal_spk_managers : m_external_spk_managers;
@@ -4432,12 +4450,6 @@ void CWallet::SetActiveScriptPubKeyMan(uint256 id, OutputType type, bool interna
     spk_man->SetInternal(internal);
     spk_mans[type] = spk_man;
 
-    if (!memonly) {
-        WalletBatch batch(*database);
-        if (!batch.WriteActiveScriptPubKeyMan(static_cast<uint8_t>(type), id, internal)) {
-            throw std::runtime_error(std::string(__func__) + ": writing active ScriptPubKeyMan id failed");
-        }
-    }
     NotifyCanGetAddressesChanged();
 }
 
diff --git a/src/wallet/wallet.h b/src/wallet/wallet.h
index 32d8481cd8..8cb2a64484 100644
--- a/src/wallet/wallet.h
+++ b/src/wallet/wallet.h
@@ -1176,7 +1176,9 @@ public:
 
     /** overwrite all flags by the given uint64_t
        returns false if unknown, non-tolerable flags are present */
-    bool SetWalletFlags(uint64_t overwriteFlags, bool memOnly);
+    bool AddWalletFlags(uint64_t flags);
+    /** Loads the flags into the wallet. (used by LoadWallet) */
+    bool LoadWalletFlags(uint64_t flags);
 
     /** Determine if we are a legacy wallet */
     bool IsLegacy() const;
@@ -1254,12 +1256,17 @@ public:
     //! Instantiate a descriptor ScriptPubKeyMan from the WalletDescriptor and load it
     void LoadDescriptorScriptPubKeyMan(uint256 id, WalletDescriptor& desc);
 
-    //! Sets the active ScriptPubKeyMan for the specified type and internal
+    //! Adds the active ScriptPubKeyMan for the specified type and internal. Writes it to the wallet file
     //! @param[in] id The unique id for the ScriptPubKeyMan
     //! @param[in] type The OutputType this ScriptPubKeyMan provides addresses for
     //! @param[in] internal Whether this ScriptPubKeyMan provides change addresses
-    //! @param[in] memonly Whether to record this update to the database. Set to true for wallet loading, normally false when actually updating the wallet.
-    void SetActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal, bool memonly = false);
+    void AddActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal);
+
+    //! Loads an active ScriptPubKeyMan for the specified type and internal. (used by LoadWallet)
+    //! @param[in] id The unique id for the ScriptPubKeyMan
+    //! @param[in] type The OutputType this ScriptPubKeyMan provides addresses for
+    //! @param[in] internal Whether this ScriptPubKeyMan provides change addresses
+    void LoadActiveScriptPubKeyMan(uint256 id, OutputType type, bool internal);
 
     //! Create new DescriptorScriptPubKeyMans and add them to the wallet
     void SetupDescriptorScriptPubKeyMans();
diff --git a/src/wallet/walletdb.cpp b/src/wallet/walletdb.cpp
index 7da477d5b7..5297c43718 100644
--- a/src/wallet/walletdb.cpp
+++ b/src/wallet/walletdb.cpp
@@ -539,11 +539,11 @@ ReadKeyValue(CWallet* pwallet, CDataStream& ssKey, CDataStream& ssValue,
         } else if (strType == DBKeys::HDCHAIN) {
             CHDChain chain;
             ssValue >> chain;
-            pwallet->GetOrCreateLegacyScriptPubKeyMan()->SetHDChain(chain, true);
+            pwallet->GetOrCreateLegacyScriptPubKeyMan()->LoadHDChain(chain);
         } else if (strType == DBKeys::FLAGS) {
             uint64_t flags;
             ssValue >> flags;
-            if (!pwallet->SetWalletFlags(flags, true)) {
+            if (!pwallet->LoadWalletFlags(flags)) {
                 strErr = "Error reading wallet database: Unknown non-tolerable wallet flags found";
                 return false;
             }
@@ -752,10 +752,10 @@ DBErrors WalletBatch::LoadWallet(CWallet* pwallet)
 
     // Set the active ScriptPubKeyMans
     for (auto spk_man_pair : wss.m_active_external_spks) {
-        pwallet->SetActiveScriptPubKeyMan(spk_man_pair.second, spk_man_pair.first, /* internal */ false, /* memonly */ true);
+        pwallet->LoadActiveScriptPubKeyMan(spk_man_pair.second, spk_man_pair.first, /* internal */ false);
     }
     for (auto spk_man_pair : wss.m_active_internal_spks) {
-        pwallet->SetActiveScriptPubKeyMan(spk_man_pair.second, spk_man_pair.first, /* internal */ true, /* memonly */ true);
+        pwallet->LoadActiveScriptPubKeyMan(spk_man_pair.second, spk_man_pair.first, /* internal */ true);
     }
 
     // Set the descriptor caches