wallet: implement IsDestinationActive() and add to rpc getaddressinfo

This connects SPKM.IsKeyActive() up to the wallet level.

Github-Pull: bitcoin#27216
Rebased-From: d33f3bd

Author: pinheadmz

src/wallet/rpc/addresses.cpp

@@ -531,6 +531,7 @@ RPCHelpMan getaddressinfo()
                         {RPCResult::Type::STR, "address", "The bitcoin address validated."},
                         {RPCResult::Type::STR_HEX, "scriptPubKey", "The hex-encoded output script generated by the address."},
                         {RPCResult::Type::BOOL, "ismine", "If the address is yours."},
+                        {RPCResult::Type::BOOL, "isactive", "If the key is in the active keypool (always equal to \"ismine\" in descriptor wallets)."},
                         {RPCResult::Type::BOOL, "iswatchonly", "If the address is watchonly."},
                         {RPCResult::Type::BOOL, "solvable", "If we know how to spend coins sent to this address, ignoring the possible lack of private keys."},
                         {RPCResult::Type::STR, "desc", /*optional=*/true, "A descriptor for spending coins sent to this address (only when solvable)."},
@@ -601,6 +602,7 @@ RPCHelpMan getaddressinfo()
 
     isminetype mine = pwallet->IsMine(dest);
     ret.pushKV("ismine", bool(mine & ISMINE_SPENDABLE));
+    ret.pushKV("isactive", pwallet->IsDestinationActive(dest));
 
     if (provider) {
         auto inferred = InferDescriptor(scriptPubKey, *provider);

src/wallet/wallet.cpp

@@ -2616,6 +2616,13 @@ void CWallet::ForEachAddrBookEntry(const ListAddrBookFunc& func) const
     }
 }
 
+bool CWallet::IsDestinationActive(const CTxDestination& dest) const
+{
+    const CScript& script{GetScriptForDestination(dest)};
+    const std::set<ScriptPubKeyMan*>& spkms{GetActiveScriptPubKeyMans()};
+    return std::any_of(spkms.cbegin(), spkms.cend(), [&script](const auto& spkm) { return spkm->IsKeyActive(script); });
+}
+
 std::vector<CTxDestination> CWallet::ListAddrBookAddresses(const std::optional<AddrBookFilter>& _filter) const
 {
     AssertLockHeld(cs_wallet);

src/wallet/wallet.h

@@ -763,6 +763,11 @@ class CWallet final : public WalletStorage, public interfaces::Chain::Notificati
     using ListAddrBookFunc = std::function<void(const CTxDestination& dest, const std::string& label, bool is_change, const std::optional<AddressPurpose> purpose)>;
     void ForEachAddrBookEntry(const ListAddrBookFunc& func) const EXCLUSIVE_LOCKS_REQUIRED(cs_wallet);
 
+    /**
+     * Determines if a destination is in the active spkm (not imported and not dumped for a new keypool)
+     */
+    [[nodiscard]] bool IsDestinationActive(const CTxDestination& dest) const;
+
     /**
      * Marks all outputs in each one of the destinations dirty, so their cache is
      * reset and does not return outdated information.