Method AddToWalletIfInvolvingMe

src/wallet/wallet.cpp:1089–1147

}

bool CWallet::AddToWalletIfInvolvingMe(const CTransactionRef& ptx, const SyncTxState& state, bool fUpdate, bool rescanning_old_block)
{
    const CTransaction& tx = *ptx;
    {
        AssertLockHeld(cs_wallet);

        if (auto* conf = std::get_if<TxStateConfirmed>(&state)) {
            for (const CTxIn& txin : tx.vin) {
                std::pair<TxSpends::const_iterator, TxSpends::const_iterator> range = mapTxSpends.equal_range(txin.prevout);
                while (range.first != range.second) {
                    if (range.first->second != tx.GetHash()) {
                        WalletLogPrintf("Transaction %s (in block %s) conflicts with wallet transaction %s (both spend %s:%i)\n", tx.GetHash().ToString(), conf->confirmed_block_hash.ToString(), range.first->second.ToString(), range.first->first.hash.ToString(), range.first->first.n);
                        MarkConflicted(conf->confirmed_block_hash, conf->confirmed_block_height, range.first->second);
                    }
                    range.first++;
                }
            }
        }

        bool fExisted = mapWallet.count(tx.GetHash()) != 0;
        if (fExisted && !fUpdate) return false;
        if (fExisted || IsMine(tx) || IsFromMe(tx))
        {
            /* Check if any keys in the wallet keypool that were supposed to be unused
             * have appeared in a new transaction. If so, remove those keys from the keypool.
             * This can happen when restoring an old wallet backup that does not contain
             * the mostly recently created transactions from newer versions of the wallet.
             */

            // loop though all outputs
            for (const CTxOut& txout: tx.vout) {
                for (const auto& spk_man : GetScriptPubKeyMans(txout.scriptPubKey)) {
                    for (auto &dest : spk_man->MarkUnusedAddresses(txout.scriptPubKey)) {
                        // If internal flag is not defined try to infer it from the ScriptPubKeyMan
                        if (!dest.internal.has_value()) {
                            dest.internal = IsInternalScriptPubKeyMan(spk_man);
                        }

                        // skip if can't determine whether it's a receiving address or not
                        if (!dest.internal.has_value()) continue;

                        // If this is a receiving address and it's not in the address book yet
                        // (e.g. it wasn't generated on this node or we're restoring from backup)
                        // add it to the address book for proper transaction accounting
                        if (!*dest.internal && !FindAddressBookEntry(dest.dest, /* allow_change= */ false)) {
                            SetAddressBook(dest.dest, "", "receive");
                        }
                    }
                }
            }

            // Block disconnection override an abandoned tx as unconfirmed
            // which means user may have to call abandontransaction again
            TxState tx_state = std::visit([](auto&& s) -> TxState { return s; }, state);
            return AddToWallet(MakeTransactionRef(tx), tx_state, /*update_wtx=*/nullptr, /*fFlushOnClose=*/false, rescanning_old_block);
        }
    }
    return false;