Esempio n. 1
0
// ImportP2SHRedeemScript adds a P2SH redeem script to the wallet.
func (w *Wallet) ImportP2SHRedeemScript(script []byte) (*dcrutil.AddressScriptHash, error) {
	var p2shAddr *dcrutil.AddressScriptHash
	err := walletdb.Update(w.db, func(tx walletdb.ReadWriteTx) error {
		addrmgrNs := tx.ReadWriteBucket(waddrmgrNamespaceKey)
		txmgrNs := tx.ReadWriteBucket(wtxmgrNamespaceKey)

		err := w.TxStore.InsertTxScript(txmgrNs, script)
		if err != nil {
			return err
		}

		addrInfo, err := w.Manager.ImportScript(addrmgrNs, script)
		if err != nil {
			// Don't care if it's already there, but still have to
			// set the p2shAddr since the address manager didn't
			// return anything useful.
			if waddrmgr.IsError(err, waddrmgr.ErrDuplicateAddress) {
				// This function will never error as it always
				// hashes the script to the correct length.
				p2shAddr, _ = dcrutil.NewAddressScriptHash(script,
					w.chainParams)
				return nil
			}
			return err
		}

		p2shAddr = addrInfo.Address().(*dcrutil.AddressScriptHash)
		return nil
	})
	return p2shAddr, err
}
Esempio n. 2
0
// TestIsError tests the IsError func.
func TestIsError(t *testing.T) {
	tests := []struct {
		err  error
		code waddrmgr.ErrorCode
		exp  bool
	}{
		{
			err: waddrmgr.ManagerError{
				ErrorCode: waddrmgr.ErrDatabase,
			},
			code: waddrmgr.ErrDatabase,
			exp:  true,
		},
		{
			// package should never return *ManagerError
			err: &waddrmgr.ManagerError{
				ErrorCode: waddrmgr.ErrDatabase,
			},
			code: waddrmgr.ErrDatabase,
			exp:  false,
		},
		{
			err: waddrmgr.ManagerError{
				ErrorCode: waddrmgr.ErrCrypto,
			},
			code: waddrmgr.ErrDatabase,
			exp:  false,
		},
		{
			err:  errors.New("not a ManagerError"),
			code: waddrmgr.ErrDatabase,
			exp:  false,
		},
	}

	for i, test := range tests {
		got := waddrmgr.IsError(test.err, test.code)
		if got != test.exp {
			t.Errorf("Test %d: got %v expected %v", i, got, test.exp)
		}
	}
}
Esempio n. 3
0
func (w *Wallet) addRelevantTx(dbtx walletdb.ReadWriteTx, rec *wtxmgr.TxRecord,
	block *wtxmgr.BlockMeta) error {

	addrmgrNs := dbtx.ReadWriteBucket(waddrmgrNamespaceKey)
	stakemgrNs := dbtx.ReadWriteBucket(wstakemgrNamespaceKey)
	txmgrNs := dbtx.ReadWriteBucket(wtxmgrNamespaceKey)

	// At the moment all notified transactions are assumed to actually be
	// relevant.  This assumption will not hold true when SPV support is
	// added, but until then, simply insert the transaction because there
	// should either be one or more relevant inputs or outputs.
	//
	// TODO This function is pretty bad corruption wise, it's very easy
	// to corrupt the wallet if you ctrl+c while in this function. This
	// needs desperate refactoring.

	tx := dcrutil.NewTx(&rec.MsgTx)
	txHash := rec.Hash

	// Handle incoming SStx; store them in the stake manager if we own
	// the OP_SSTX tagged out, except if we're operating as a stake pool
	// server. In that case, additionally consider the first commitment
	// output as well.
	if is, _ := stake.IsSStx(&rec.MsgTx); is {
		// Errors don't matter here.  If addrs is nil, the range below
		// does nothing.
		txOut := tx.MsgTx().TxOut[0]

		_, addrs, _, _ := txscript.ExtractPkScriptAddrs(txOut.Version,
			txOut.PkScript, w.chainParams)
		insert := false
		for _, addr := range addrs {
			_, err := w.Manager.Address(addrmgrNs, addr)
			if err == nil {
				// We own the voting output pubkey or script and we're
				// not operating as a stake pool, so simply insert this
				// ticket now.
				if !w.stakePoolEnabled {
					insert = true
					break
				} else {
					// We are operating as a stake pool. The below
					// function will ONLY add the ticket into the
					// stake pool if it has been found within a
					// block.
					if block == nil {
						break
					}

					valid, errEval := w.evaluateStakePoolTicket(rec, block,
						addr)
					if valid {
						// Be sure to insert this into the user's stake
						// pool entry into the stake manager.
						poolTicket := &wstakemgr.PoolTicket{
							Ticket:       txHash,
							HeightTicket: uint32(block.Height),
							Status:       wstakemgr.TSImmatureOrLive,
						}
						errUpdate := w.StakeMgr.UpdateStakePoolUserTickets(
							stakemgrNs, addrmgrNs, addr, poolTicket)
						if errUpdate != nil {
							log.Warnf("Failed to insert stake pool "+
								"user ticket: %s", err.Error())
						}
						log.Debugf("Inserted stake pool ticket %v for user %v "+
							"into the stake store database", txHash, addr)

						insert = true
						break
					}

					// Log errors if there were any. At this point the ticket
					// must be invalid, so insert it into the list of invalid
					// user tickets.
					if errEval != nil {
						log.Warnf("Ticket %v failed ticket evaluation for "+
							"the stake pool: %s", rec.Hash, err.Error())
					}
					errUpdate := w.StakeMgr.UpdateStakePoolUserInvalTickets(
						stakemgrNs, addr, &rec.Hash)
					if errUpdate != nil {
						log.Warnf("Failed to update pool user %v with "+
							"invalid ticket %v", addr.EncodeAddress(),
							rec.Hash)
					}
				}
			}
		}

		if insert {
			err := w.StakeMgr.InsertSStx(stakemgrNs, tx, w.VoteBits)
			if err != nil {
				log.Errorf("Failed to insert SStx %v"+
					"into the stake store.", tx.Sha())
			}
		}
	}

	// Handle incoming SSGen; store them if we own
	// the ticket used to purchase them.
	if is, _ := stake.IsSSGen(&rec.MsgTx); is {
		if block != nil {
			txInHash := tx.MsgTx().TxIn[1].PreviousOutPoint.Hash
			if w.StakeMgr.CheckHashInStore(&txInHash) {
				w.StakeMgr.InsertSSGen(stakemgrNs, &block.Hash,
					int64(block.Height),
					&txHash,
					w.VoteBits.Bits,
					&txInHash)
			}

			// If we're running as a stake pool, insert
			// the stake pool user ticket update too.
			if w.stakePoolEnabled {
				txInHeight := tx.MsgTx().TxIn[1].BlockHeight
				poolTicket := &wstakemgr.PoolTicket{
					Ticket:       txInHash,
					HeightTicket: txInHeight,
					Status:       wstakemgr.TSVoted,
					SpentBy:      txHash,
					HeightSpent:  uint32(block.Height),
				}

				poolUser, err := w.StakeMgr.SStxAddress(stakemgrNs, &txInHash)
				if err != nil {
					log.Warnf("Failed to fetch stake pool user for "+
						"ticket %v (voted ticket)", txInHash)
				} else {
					err = w.StakeMgr.UpdateStakePoolUserTickets(
						stakemgrNs, addrmgrNs, poolUser, poolTicket)
					if err != nil {
						log.Warnf("Failed to update stake pool ticket for "+
							"stake pool user %s after voting",
							poolUser.EncodeAddress())
					} else {
						log.Debugf("Updated voted stake pool ticket %v "+
							"for user %v into the stake store database ("+
							"vote hash: %v)", txInHash, poolUser, txHash)
					}
				}
			}
		} else {
			// If there's no associated block, it's potentially a
			// doublespent SSGen. Just ignore it and wait for it
			// to later get into a block.
			return nil
		}
	}

	// Handle incoming SSRtx; store them if we own
	// the ticket used to purchase them.
	if is, _ := stake.IsSSRtx(&rec.MsgTx); is {
		if block != nil {
			txInHash := tx.MsgTx().TxIn[0].PreviousOutPoint.Hash

			if w.StakeMgr.CheckHashInStore(&txInHash) {
				w.StakeMgr.InsertSSRtx(stakemgrNs, &block.Hash,
					int64(block.Height),
					&txHash,
					&txInHash)
			}

			// If we're running as a stake pool, insert
			// the stake pool user ticket update too.
			if w.stakePoolEnabled {
				txInHeight := tx.MsgTx().TxIn[0].BlockHeight
				poolTicket := &wstakemgr.PoolTicket{
					Ticket:       txInHash,
					HeightTicket: txInHeight,
					Status:       wstakemgr.TSMissed,
					SpentBy:      txHash,
					HeightSpent:  uint32(block.Height),
				}

				poolUser, err := w.StakeMgr.SStxAddress(stakemgrNs, &txInHash)
				if err != nil {
					log.Warnf("failed to fetch stake pool user for "+
						"ticket %v (missed ticket)", txInHash)
				} else {
					err = w.StakeMgr.UpdateStakePoolUserTickets(
						stakemgrNs, addrmgrNs, poolUser, poolTicket)
					if err != nil {
						log.Warnf("failed to update stake pool ticket for "+
							"stake pool user %s after revoking",
							poolUser.EncodeAddress())
					} else {
						log.Debugf("Updated missed stake pool ticket %v "+
							"for user %v into the stake store database ("+
							"revocation hash: %v)", txInHash, poolUser, txHash)
					}
				}
			}
		}
	}

	err := w.TxStore.InsertTx(txmgrNs, addrmgrNs, rec, block)
	if err != nil {
		return err
	}

	// Handle input scripts that contain P2PKs that we care about.
	for i, input := range rec.MsgTx.TxIn {
		if txscript.IsMultisigSigScript(input.SignatureScript) {
			rs, err :=
				txscript.MultisigRedeemScriptFromScriptSig(
					input.SignatureScript)
			if err != nil {
				return err
			}

			class, addrs, _, err := txscript.ExtractPkScriptAddrs(
				txscript.DefaultScriptVersion, rs, w.chainParams)
			if err != nil {
				// Non-standard outputs are skipped.
				continue
			}
			if class != txscript.MultiSigTy {
				// This should never happen, but be paranoid.
				continue
			}

			isRelevant := false
			for _, addr := range addrs {
				_, err := w.Manager.Address(addrmgrNs, addr)
				if err == nil {
					isRelevant = true
					err = w.Manager.MarkUsed(addrmgrNs, addr)
					if err != nil {
						return err
					}
					log.Debugf("Marked address %v used", addr)
				} else {
					// Missing addresses are skipped.  Other errors should
					// be propagated.
					if !waddrmgr.IsError(err, waddrmgr.ErrAddressNotFound) {
						return err
					}
				}
			}

			// Add the script to the script databases.
			// TODO Markused script address? cj
			if isRelevant {
				err = w.TxStore.InsertTxScript(txmgrNs, rs)
				if err != nil {
					return err
				}
				var blockToUse *waddrmgr.BlockStamp
				if block != nil {
					blockToUse = &waddrmgr.BlockStamp{
						Height: block.Height,
						Hash:   block.Hash,
					}
				}
				mscriptaddr, err := w.Manager.ImportScript(addrmgrNs, rs, blockToUse)
				if err != nil {
					switch {
					// Don't care if it's already there.
					case waddrmgr.IsError(err, waddrmgr.ErrDuplicateAddress):
						break
					case waddrmgr.IsError(err, waddrmgr.ErrLocked):
						log.Warnf("failed to attempt script importation "+
							"of incoming tx script %x because addrmgr "+
							"was locked", rs)
						break
					default:
						return err
					}
				} else {
					// This is the first time seeing this script address
					// belongs to us, so do a rescan and see if there are
					// any other outputs to this address.
					job := &RescanJob{
						Addrs:     []dcrutil.Address{mscriptaddr.Address()},
						OutPoints: nil,
						BlockStamp: waddrmgr.BlockStamp{
							Height: 0,
							Hash:   *w.chainParams.GenesisHash,
						},
					}

					// Submit rescan job and log when the import has completed.
					// Do not block on finishing the rescan.  The rescan success
					// or failure is logged elsewhere, and the channel is not
					// required to be read, so discard the return value.
					_ = w.SubmitRescan(job)
				}
			}

			// If we're spending a multisig outpoint we know about,
			// update the outpoint. Inefficient because you deserialize
			// the entire multisig output info. Consider a specific
			// exists function in wtxmgr. The error here is skipped
			// because the absence of an multisignature output for
			// some script can not always be considered an error. For
			// example, the wallet might be rescanning as called from
			// the above function and so does not have the output
			// included yet.
			mso, err := w.TxStore.GetMultisigOutput(txmgrNs, &input.PreviousOutPoint)
			if mso != nil && err == nil {
				w.TxStore.SpendMultisigOut(txmgrNs, &input.PreviousOutPoint,
					rec.Hash,
					uint32(i))
			}
		}
	}

	// Check every output to determine whether it is controlled by a wallet
	// key.  If so, mark the output as a credit.
	for i, output := range rec.MsgTx.TxOut {
		// Ignore unspendable outputs.
		if output.Value == 0 {
			continue
		}

		class, addrs, _, err := txscript.ExtractPkScriptAddrs(output.Version,
			output.PkScript, w.chainParams)
		if err != nil {
			// Non-standard outputs are skipped.
			continue
		}
		isStakeType := class == txscript.StakeSubmissionTy ||
			class == txscript.StakeSubChangeTy ||
			class == txscript.StakeGenTy ||
			class == txscript.StakeRevocationTy
		if isStakeType {
			class, err = txscript.GetStakeOutSubclass(output.PkScript)
			if err != nil {
				log.Errorf("Unknown stake output subclass parse error "+
					"encountered: %v", err)
				continue
			}
		}

		for _, addr := range addrs {
			ma, err := w.Manager.Address(addrmgrNs, addr)
			if err == nil {
				// TODO: Credits should be added with the
				// account they belong to, so wtxmgr is able to
				// track per-account balances.
				err = w.TxStore.AddCredit(txmgrNs, rec, block,
					uint32(i), ma.Internal(), ma.Account())
				if err != nil {
					return err
				}
				err = w.Manager.MarkUsed(addrmgrNs, addr)
				if err != nil {
					return err
				}
				log.Debugf("Marked address %v used", addr)
				continue
			}

			// Missing addresses are skipped.  Other errors should
			// be propagated.
			if !waddrmgr.IsError(err, waddrmgr.ErrAddressNotFound) {
				return err
			}
		}

		// Handle P2SH addresses that are multisignature scripts
		// with keys that we own.
		if class == txscript.ScriptHashTy {
			var expandedScript []byte
			for _, addr := range addrs {
				// Search both the script store in the tx store
				// and the address manager for the redeem script.
				var err error
				expandedScript, err =
					w.TxStore.GetTxScript(txmgrNs,
						addr.ScriptAddress())
				if err != nil {
					return err
				}

				if expandedScript == nil {
					scrAddr, err := w.Manager.Address(addrmgrNs, addr)
					if err == nil {
						sa, ok := scrAddr.(waddrmgr.ManagedScriptAddress)
						if !ok {
							log.Warnf("address %v is not a script"+
								" address (type %T)",
								scrAddr.Address().EncodeAddress(),
								scrAddr.Address())
							continue
						}
						retrievedScript, err := sa.Script()
						if err != nil {
							log.Errorf("failed to decode redeemscript for "+
								"address %v: %v", addr.EncodeAddress(),
								err.Error())
							continue
						}
						expandedScript = retrievedScript

					} else {
						// We can't find this redeem script anywhere.
						// Skip this output.
						log.Debugf("failed to find redeemscript for "+
							"address %v in address manager: %v",
							addr.EncodeAddress(), err.Error())
						continue
					}
				}
			}

			// Otherwise, extract the actual addresses and
			// see if any belong to us.
			expClass, multisigAddrs, _, err := txscript.ExtractPkScriptAddrs(
				txscript.DefaultScriptVersion,
				expandedScript,
				w.chainParams)
			if err != nil {
				return err
			}

			// Skip non-multisig scripts.
			if expClass != txscript.MultiSigTy {
				continue
			}

			for _, maddr := range multisigAddrs {
				_, err := w.Manager.Address(addrmgrNs, maddr)
				// An address we own; handle accordingly.
				if err == nil {
					errStore := w.TxStore.AddMultisigOut(
						txmgrNs, rec, block, uint32(i))
					if errStore != nil {
						// This will throw if there are multiple private keys
						// for this multisignature output owned by the wallet,
						// so it's routed to debug.
						log.Debugf("unable to add multisignature output: %v",
							errStore.Error())
					}
				}
			}
		}
	}

	// Send notification of mined or unmined transaction to any interested
	// clients.
	//
	// TODO: Avoid the extra db hits.
	if block == nil {
		details, err := w.TxStore.UniqueTxDetails(txmgrNs, &rec.Hash, nil)
		if err != nil {
			log.Errorf("Cannot query transaction details for notifiation: %v",
				err)
		} else {
			w.NtfnServer.notifyUnminedTransaction(dbtx, details)
		}
	} else {
		details, err := w.TxStore.UniqueTxDetails(txmgrNs, &rec.Hash, &block.Block)
		if err != nil {
			log.Errorf("Cannot query transaction details for notifiation: %v",
				err)
		} else {
			w.NtfnServer.notifyMinedTransaction(dbtx, details, block)
		}
	}

	return nil
}
Esempio n. 4
0
// handleTicketPurchases autopurchases stake tickets for the wallet
// if stake mining is enabled.
func (w *Wallet) handleTicketPurchases() {
	purchased := 0
	attempts := 0
	maxTickets := int(w.chainParams.MaxFreshStakePerBlock)
	maxAttempts := 20 // Sane-ish?

	sdiff := dcrutil.Amount(w.GetStakeDifficulty().StakeDifficulty)
	maxToPay := w.GetTicketMaxPrice()
	if sdiff > maxToPay {
		return
	}

ticketPurchaseLoop:
	for {
		if purchased >= maxTickets {
			break
		}

		if attempts >= maxAttempts {
			break
		}

		// eligible may also be the tx hash as a string; however, for the
		// too many inputs error, the list of eligible Credits from
		// wtxmgr is instead returned. We can use this to compress the
		// amount to the ticket price, thus avoiding more costly db
		// lookups.
		eligible, err := w.CreatePurchaseTicket(w.BalanceToMaintain, -1,
			0, nil)
		if err != nil {
			switch {
			case err == ErrSStxNotEnoughFunds:
				break ticketPurchaseLoop
			case err == ErrSStxInputOverflow:
				switch v := eligible.(type) {
				case string:
					log.Errorf("Was given a string instead of eligible credits!")
					continue
				case []wtxmgr.Credit:
					err := w.compressEligible(v)
					if err != nil {
						log.Errorf("Failed to compress outputs: %v", err.Error())
					}
					attempts++
					continue
				}
			case waddrmgr.IsError(err, waddrmgr.ErrLocked):
				log.Warnf("Ticket purchase for stake mining is enabled, " +
					"but tickets could not be purchased because the " +
					"wallet is currently locked!")
				break ticketPurchaseLoop
			case err == ErrTicketPriceNotSet:
				// TODO make this trigger a request to the daemon
				// through chainsvr to get the latest ticket price.
				// The current behaviour simply waits for a block
				// to be connected to get the stake difficulty.
				// Probably need a retrigger for the ntfn like
				// "rebroadcaststakediff"
				log.Warnf("Ticket prices not yet established because the " +
					"client was recently connected; aborting ticket purchase " +
					"attempts")
				break ticketPurchaseLoop
			case err == ErrClientPurchaseTicket:
				log.Warnf("A chainSvr error was returned attempting to " +
					"purchase a ticket; ticket purchases aborted.")
				break ticketPurchaseLoop
			default:
				log.Errorf("PurchaseTicket error returned: %v", err)
			}
		} else {
			purchased++
		}

		attempts++
	}
}
Esempio n. 5
0
func (w *Wallet) addRelevantTx(rec *wtxmgr.TxRecord,
	block *wtxmgr.BlockMeta) error {
	// TODO: The transaction store and address manager need to be updated
	// together, but each operate under different namespaces and are changed
	// under new transactions.  This is not error safe as we lose
	// transaction semantics.
	//
	// I'm unsure of the best way to solve this.  Some possible solutions
	// and drawbacks:
	//
	//   1. Open write transactions here and pass the handle to every
	//      waddrmr and wtxmgr method.  This complicates the caller code
	//      everywhere, however.
	//
	//   2. Move the wtxmgr namespace into the waddrmgr namespace, likely
	//      under its own bucket.  This entire function can then be moved
	//      into the waddrmgr package, which updates the nested wtxmgr.
	//      This removes some of separation between the components.
	//
	//   3. Use multiple wtxmgrs, one for each account, nested in the
	//      waddrmgr namespace.  This still provides some sort of logical
	//      separation (transaction handling remains in another package, and
	//      is simply used by waddrmgr), but may result in duplicate
	//      transactions being saved if they are relevant to multiple
	//      accounts.
	//
	//   4. Store wtxmgr-related details under the waddrmgr namespace, but
	//      solve the drawback of #3 by splitting wtxmgr to save entire
	//      transaction records globally for all accounts, with
	//      credit/debit/balance tracking per account.  Each account would
	//      also save the relevant transaction hashes and block incidence so
	//      the full transaction can be loaded from the waddrmgr
	//      transactions bucket.  This currently seems like the best
	//      solution.

	// At the moment all notified transactions are assumed to actually be
	// relevant.  This assumption will not hold true when SPV support is
	// added, but until then, simply insert the transaction because there
	// should either be one or more relevant inputs or outputs.
	//
	// TODO This function is pretty bad corruption wise, it's very easy
	// to corrupt the wallet if you ctrl+c while in this function. This
	// needs desperate refactoring.

	tx := dcrutil.NewTx(&rec.MsgTx)

	// Handle incoming SStx; store them in the stake manager if we own
	// the OP_SSTX tagged out.
	if is, _ := stake.IsSStx(tx); is {
		// Errors don't matter here.  If addrs is nil, the range below
		// does nothing.
		txOut := tx.MsgTx().TxOut[0]

		_, addrs, _, _ := txscript.ExtractPkScriptAddrs(txOut.Version,
			txOut.PkScript, w.chainParams)
		insert := false
		for _, addr := range addrs {
			_, err := w.Manager.Address(addr)
			if err == nil {
				insert = true
				break
			}
		}

		if insert {
			err := w.StakeMgr.InsertSStx(tx)
			if err != nil {
				log.Errorf("Failed to insert SStx %v"+
					"into the stake store.", tx.Sha())
			}
		}
	}

	// Handle incoming SSGen; store them if we own
	// the ticket used to purchase them.
	if is, _ := stake.IsSSGen(tx); is {
		if block != nil {
			txInHash := tx.MsgTx().TxIn[1].PreviousOutPoint.Hash
			if w.StakeMgr.CheckHashInStore(&txInHash) {
				w.StakeMgr.InsertSSGen(&block.Hash,
					int64(block.Height),
					tx.Sha(),
					w.VoteBits,
					&txInHash)
			}
		} else {
			// If there's no associated block, it's potentially a
			// doublespent SSGen. Just ignore it and wait for it
			// to later get into a block.
			return nil
		}
	}

	// Handle incoming SSRtx; store them if we own
	// the ticket used to purchase them.
	if is, _ := stake.IsSSRtx(tx); is {
		if block != nil {
			txInHash := tx.MsgTx().TxIn[0].PreviousOutPoint.Hash

			if w.StakeMgr.CheckHashInStore(&txInHash) {
				w.StakeMgr.InsertSSRtx(&block.Hash,
					int64(block.Height),
					tx.Sha(),
					&txInHash)
			}
		}
	}

	err := w.TxStore.InsertTx(rec, block)
	if err != nil {
		return err
	}

	// Handle input scripts that contain P2PKs that we care about.
	for i, input := range rec.MsgTx.TxIn {
		if txscript.IsMultisigSigScript(input.SignatureScript) {
			rs, err :=
				txscript.MultisigRedeemScriptFromScriptSig(
					input.SignatureScript)
			if err != nil {
				return err
			}

			class, addrs, _, err := txscript.ExtractPkScriptAddrs(
				txscript.DefaultScriptVersion, rs, w.chainParams)
			if err != nil {
				// Non-standard outputs are skipped.
				continue
			}
			if class != txscript.MultiSigTy {
				// This should never happen, but be paranoid.
				continue
			}

			isRelevant := false
			for _, addr := range addrs {
				_, err := w.Manager.Address(addr)
				if err == nil {
					isRelevant = true
					err = w.Manager.MarkUsed(addr)
					if err != nil {
						return err
					}
					log.Debugf("Marked address %v used", addr)
				} else {
					// Missing addresses are skipped.  Other errors should
					// be propagated.
					if !waddrmgr.IsError(err, waddrmgr.ErrAddressNotFound) {
						return err
					}
				}
			}

			// Add the script to the script databases.
			// TODO Markused script address? cj
			if isRelevant {
				err = w.TxStore.InsertTxScript(rs)
				if err != nil {
					return err
				}
				var blockToUse *waddrmgr.BlockStamp
				if block != nil {
					blockToUse = &waddrmgr.BlockStamp{block.Height, block.Hash}
				}
				mscriptaddr, err := w.Manager.ImportScript(rs, blockToUse)
				if err != nil {
					switch {
					// Don't care if it's already there.
					case waddrmgr.IsError(err, waddrmgr.ErrDuplicateAddress):
						break
					case waddrmgr.IsError(err, waddrmgr.ErrLocked):
						log.Debugf("failed to attempt script importation " +
							"of incoming tx because addrmgr was locked")
						break
					default:
						return err
					}
				} else {
					// This is the first time seeing this script address
					// belongs to us, so do a rescan and see if there are
					// any other outputs to this address.
					job := &RescanJob{
						Addrs:     []dcrutil.Address{mscriptaddr.Address()},
						OutPoints: nil,
						BlockStamp: waddrmgr.BlockStamp{
							0,
							*w.chainParams.GenesisHash,
						},
					}

					// Submit rescan job and log when the import has completed.
					// Do not block on finishing the rescan.  The rescan success
					// or failure is logged elsewhere, and the channel is not
					// required to be read, so discard the return value.
					_ = w.SubmitRescan(job)
				}
			}

			// If we're spending a multisig outpoint we
			// know about, update the outpoint.
			// Inefficient because you deserialize the
			// entire multisig output info, consider
			// a specific exists function in wtxmgr. cj
			mso, err := w.TxStore.GetMultisigOutput(&input.PreviousOutPoint)
			if err != nil {
				return err
			}
			if mso != nil {
				w.TxStore.SpendMultisigOut(&input.PreviousOutPoint,
					rec.Hash,
					uint32(i))
			}
		}
	}

	// Check every output to determine whether it is controlled by a wallet
	// key.  If so, mark the output as a credit.
	for i, output := range rec.MsgTx.TxOut {
		class, addrs, _, err := txscript.ExtractPkScriptAddrs(output.Version,
			output.PkScript, w.chainParams)
		if err != nil {
			// Non-standard outputs are skipped.
			continue
		}
		isStakeType := class == txscript.StakeSubmissionTy ||
			class == txscript.StakeSubChangeTy ||
			class == txscript.StakeGenTy ||
			class == txscript.StakeRevocationTy
		if isStakeType {
			class, err = txscript.GetStakeOutSubclass(output.PkScript)
			if err != nil {
				log.Errorf("Unknown stake output subclass encountered")
				continue
			}
		}
		switch {
		case class == txscript.PubKeyHashTy:
			for _, addr := range addrs {
				ma, err := w.Manager.Address(addr)
				if err == nil {
					// TODO: Credits should be added with the
					// account they belong to, so wtxmgr is able to
					// track per-account balances.
					err = w.TxStore.AddCredit(rec, block, uint32(i),
						ma.Internal())
					if err != nil {
						return err
					}
					err = w.Manager.MarkUsed(addr)
					if err != nil {
						return err
					}
					log.Debugf("Marked address %v used", addr)
					continue
				}

				// Missing addresses are skipped.  Other errors should
				// be propagated.
				if !waddrmgr.IsError(err, waddrmgr.ErrAddressNotFound) {
					return err
				}
			}
		// Handle P2SH addresses that are multisignature scripts
		// with keys that we own.
		case class == txscript.ScriptHashTy:
			var expandedScript []byte
			for _, addr := range addrs {
				var err error
				expandedScript, err =
					w.TxStore.GetTxScript(addr.ScriptAddress())
				if err != nil {
					return err
				}

				// TODO make this work, the type conversion is broken cj
				//scrAddr, err := w.Manager.Address(addr)
				//if err == nil {
				//	addrTyped := scrAddr.(*waddrmgr.ManagedScriptAddress)
				//	retrievedScript, err := addrTyped.Script()
				//	if err == nil {
				//		expandedScript = retrievedScript
				//	}
				//}
			}

			// We don't have the script for this hash, skip.
			if expandedScript == nil {
				continue
			}

			// Otherwise, extract the actual addresses and
			// see if any belong to us.
			expClass, multisigAddrs, _, err := txscript.ExtractPkScriptAddrs(
				txscript.DefaultScriptVersion,
				expandedScript,
				w.chainParams)
			if err != nil {
				return err
			}

			// Skip non-multisig scripts.
			if expClass != txscript.MultiSigTy {
				continue
			}

			for _, maddr := range multisigAddrs {
				_, err := w.Manager.Address(maddr)
				// An address we own; handle accordingly.
				if err == nil {
					errStore := w.TxStore.AddMultisigOut(rec, block, uint32(i))
					if errStore != nil {
						// This will throw if there are multiple private keys
						// for this multisignature output owned by the wallet,
						// so it's routed to debug.
						log.Debugf("unable to add multisignature output: %v",
							errStore.Error())
					}
				}
			}
		}
	}

	// TODO: Notify connected clients of the added transaction.

	bs, err := w.chainSvr.BlockStamp()
	if err == nil {
		w.notifyBalances(bs.Height, wtxmgr.BFBalanceSpendable)
	}

	return nil
}