// AddUnconfirmedTx adds all addresses related to the transaction to the
// unconfirmed (memory-only) address index.
//
// NOTE: This transaction MUST have already been validated by the memory pool
// before calling this function with it and have all of the inputs available in
// the provided utxo view. Failure to do so could result in some or all
// addresses not being indexed.
//
// This function is safe for concurrent access.
func (idx *AddrIndex) AddUnconfirmedTx(tx *dcrutil.Tx, utxoView *blockchain.UtxoViewpoint) {
// Index addresses of all referenced previous transaction outputs.
//
// The existence checks are elided since this is only called after the
// transaction has already been validated and thus all inputs are
// already known to exist.
msgTx := tx.MsgTx()
isSSGen, _ := stake.IsSSGen(msgTx)
for i, txIn := range msgTx.TxIn {
// Skip stakebase.
if i == 0 && isSSGen {
continue
}
entry := utxoView.LookupEntry(&txIn.PreviousOutPoint.Hash)
if entry == nil {
// Ignore missing entries. This should never happen
// in practice since the function comments specifically
// call out all inputs must be available.
continue
}
version := entry.ScriptVersionByIndex(txIn.PreviousOutPoint.Index)
pkScript := entry.PkScriptByIndex(txIn.PreviousOutPoint.Index)
txType := entry.TransactionType()
idx.indexUnconfirmedAddresses(version, pkScript, tx,
txType == stake.TxTypeSStx)
}
// Index addresses of all created outputs.
isSStx, _ := stake.IsSStx(msgTx)
for _, txOut := range msgTx.TxOut {
idx.indexUnconfirmedAddresses(txOut.Version, txOut.PkScript, tx,
isSStx)
}
}
// fetchNewTicketsForNode fetches the list of newly maturing tickets for a
// given node by traversing backwards through its parents until it finds the
// block that contains the original tickets to mature.
//
// This function is NOT safe for concurrent access and must be called with
// the chainLock held for writes.
func (b *BlockChain) fetchNewTicketsForNode(node *blockNode) ([]chainhash.Hash, error) {
// If we're before the stake enabled height, there can be no
// tickets in the live ticket pool.
if node.height < b.chainParams.StakeEnabledHeight {
return []chainhash.Hash{}, nil
}
// If we already cached the tickets, simply return the cached list.
// It's important to make the distinction here that nil means the
// value was never looked up, while an empty slice of pointers means
// that there were no new tickets at this height.
if node.newTickets != nil {
return node.newTickets, nil
}
// Calculate block number for where new tickets matured from and retrieve
// this block from DB or in memory if it's a sidechain.
matureNode, err := b.nodeAtHeightFromTopNode(node,
int64(b.chainParams.TicketMaturity))
if err != nil {
return nil, err
}
matureBlock, errBlock := b.fetchBlockFromHash(&matureNode.hash)
if errBlock != nil {
return nil, errBlock
}
tickets := []chainhash.Hash{}
for _, stx := range matureBlock.MsgBlock().STransactions {
if is, _ := stake.IsSStx(stx); is {
h := stx.TxSha()
tickets = append(tickets, h)
}
}
// Set the new tickets in memory so that they exist for future
// reference in the node.
node.newTickets = tickets
return tickets, nil
}
// DebugMsgTxString dumps a verbose message containing information about the
// contents of a transaction.
func DebugMsgTxString(msgTx *wire.MsgTx) string {
tx := dcrutil.NewTx(msgTx)
isSStx, _ := stake.IsSStx(tx)
isSSGen, _ := stake.IsSSGen(tx)
var sstxType []bool
var sstxPkhs [][]byte
var sstxAmts []int64
var sstxRules [][]bool
var sstxLimits [][]uint16
if isSStx {
sstxType, sstxPkhs, sstxAmts, _, sstxRules, sstxLimits =
stake.GetSStxStakeOutputInfo(tx)
}
var buffer bytes.Buffer
hash := msgTx.TxSha()
str := fmt.Sprintf("Transaction hash: %v, Version %v, Locktime: %v, "+
"Expiry %v\n\n", hash, msgTx.Version, msgTx.LockTime, msgTx.Expiry)
buffer.WriteString(str)
str = fmt.Sprintf("==INPUTS==\nNumber of inputs: %v\n\n",
len(msgTx.TxIn))
buffer.WriteString(str)
for i, input := range msgTx.TxIn {
str = fmt.Sprintf("Input number: %v\n", i)
buffer.WriteString(str)
str = fmt.Sprintf("Previous outpoint hash: %v, ",
input.PreviousOutPoint.Hash)
buffer.WriteString(str)
str = fmt.Sprintf("Previous outpoint index: %v, ",
input.PreviousOutPoint.Index)
buffer.WriteString(str)
str = fmt.Sprintf("Previous outpoint tree: %v \n",
input.PreviousOutPoint.Tree)
buffer.WriteString(str)
str = fmt.Sprintf("Sequence: %v \n",
input.Sequence)
buffer.WriteString(str)
str = fmt.Sprintf("ValueIn: %v \n",
input.ValueIn)
buffer.WriteString(str)
str = fmt.Sprintf("BlockHeight: %v \n",
input.BlockHeight)
buffer.WriteString(str)
str = fmt.Sprintf("BlockIndex: %v \n",
input.BlockIndex)
buffer.WriteString(str)
str = fmt.Sprintf("Raw signature script: %x \n", input.SignatureScript)
buffer.WriteString(str)
sigScr, _ := txscript.DisasmString(input.SignatureScript)
str = fmt.Sprintf("Disasmed signature script: %v \n\n",
sigScr)
buffer.WriteString(str)
}
str = fmt.Sprintf("==OUTPUTS==\nNumber of outputs: %v\n\n",
len(msgTx.TxOut))
buffer.WriteString(str)
for i, output := range msgTx.TxOut {
str = fmt.Sprintf("Output number: %v\n", i)
buffer.WriteString(str)
coins := float64(output.Value) / 1e8
str = fmt.Sprintf("Output amount: %v atoms or %v coins\n", output.Value,
coins)
buffer.WriteString(str)
// SStx OP_RETURNs, dump pkhs and amts committed
if isSStx && i != 0 && i%2 == 1 {
coins := float64(sstxAmts[i/2]) / 1e8
str = fmt.Sprintf("SStx commit amount: %v atoms or %v coins\n",
sstxAmts[i/2], coins)
buffer.WriteString(str)
str = fmt.Sprintf("SStx commit address: %x\n",
sstxPkhs[i/2])
buffer.WriteString(str)
str = fmt.Sprintf("SStx address type is P2SH: %v\n",
sstxType[i/2])
buffer.WriteString(str)
str = fmt.Sprintf("SStx all address types is P2SH: %v\n",
sstxType)
buffer.WriteString(str)
str = fmt.Sprintf("Voting is fee limited: %v\n",
sstxLimits[i/2][0])
buffer.WriteString(str)
if sstxRules[i/2][0] {
str = fmt.Sprintf("Voting limit imposed: %v\n",
sstxLimits[i/2][0])
buffer.WriteString(str)
}
str = fmt.Sprintf("Revoking is fee limited: %v\n",
sstxRules[i/2][1])
buffer.WriteString(str)
if sstxRules[i/2][1] {
str = fmt.Sprintf("Voting limit imposed: %v\n",
sstxLimits[i/2][1])
buffer.WriteString(str)
}
}
// SSGen block/block height OP_RETURN.
if isSSGen && i == 0 {
blkHash, blkHeight, _ := stake.GetSSGenBlockVotedOn(tx)
str = fmt.Sprintf("SSGen block hash voted on: %v, height: %v\n",
blkHash, blkHeight)
buffer.WriteString(str)
}
if isSSGen && i == 1 {
vb := stake.GetSSGenVoteBits(tx)
str = fmt.Sprintf("SSGen vote bits: %v\n", vb)
buffer.WriteString(str)
}
str = fmt.Sprintf("Raw script: %x \n", output.PkScript)
buffer.WriteString(str)
scr, _ := txscript.DisasmString(output.PkScript)
str = fmt.Sprintf("Disasmed script: %v \n\n", scr)
buffer.WriteString(str)
}
return buffer.String()
}
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
}
// addUnconfirmedTx adds all addresses related to the transaction to the
// unconfirmed (memory-only) exists address index.
func (idx *ExistsAddrIndex) addUnconfirmedTx(tx *wire.MsgTx) {
isSStx, _ := stake.IsSStx(tx)
for _, txIn := range tx.TxIn {
if txscript.IsMultisigSigScript(txIn.SignatureScript) {
rs, err :=
txscript.MultisigRedeemScriptFromScriptSig(
txIn.SignatureScript)
if err != nil {
continue
}
class, addrs, _, err := txscript.ExtractPkScriptAddrs(
txscript.DefaultScriptVersion, rs, idx.chainParams)
if err != nil {
// Non-standard outputs are skipped.
continue
}
if class != txscript.MultiSigTy {
// This should never happen, but be paranoid.
continue
}
for _, addr := range addrs {
k, err := addrToKey(addr, idx.chainParams)
if err != nil {
continue
}
if _, exists := idx.mpExistsAddr[k]; !exists {
idx.mpExistsAddr[k] = struct{}{}
}
}
}
}
for _, txOut := range tx.TxOut {
class, addrs, _, err := txscript.ExtractPkScriptAddrs(txOut.Version,
txOut.PkScript, idx.chainParams)
if err != nil {
// Non-standard outputs are skipped.
continue
}
if isSStx && class == txscript.NullDataTy {
addr, err := stake.AddrFromSStxPkScrCommitment(txOut.PkScript,
idx.chainParams)
if err != nil {
// Ignore unsupported address types.
continue
}
addrs = append(addrs, addr)
}
for _, addr := range addrs {
k, err := addrToKey(addr, idx.chainParams)
if err != nil {
// Ignore unsupported address types.
continue
}
if _, exists := idx.mpExistsAddr[k]; !exists {
idx.mpExistsAddr[k] = struct{}{}
}
}
}
}
// ConnectBlock is invoked by the index manager when a new block has been
// connected to the main chain. This indexer adds a key for each address
// the transactions in the block involve.
//
// This is part of the Indexer interface.
func (idx *ExistsAddrIndex) ConnectBlock(dbTx database.Tx, block, parent *dcrutil.Block, view *blockchain.UtxoViewpoint) error {
regularTxTreeValid := dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits,
dcrutil.BlockValid)
var parentTxs []*dcrutil.Tx
if regularTxTreeValid && block.Height() > 1 {
parentTxs = parent.Transactions()
}
blockTxns := block.STransactions()
allTxns := append(parentTxs, blockTxns...)
usedAddrs := make(map[[addrKeySize]byte]struct{})
for _, tx := range allTxns {
msgTx := tx.MsgTx()
isSStx, _ := stake.IsSStx(msgTx)
for _, txIn := range msgTx.TxIn {
if txscript.IsMultisigSigScript(txIn.SignatureScript) {
rs, err :=
txscript.MultisigRedeemScriptFromScriptSig(
txIn.SignatureScript)
if err != nil {
continue
}
class, addrs, _, err := txscript.ExtractPkScriptAddrs(
txscript.DefaultScriptVersion, rs, idx.chainParams)
if err != nil {
// Non-standard outputs are skipped.
continue
}
if class != txscript.MultiSigTy {
// This should never happen, but be paranoid.
continue
}
for _, addr := range addrs {
k, err := addrToKey(addr, idx.chainParams)
if err != nil {
continue
}
usedAddrs[k] = struct{}{}
}
}
}
for _, txOut := range tx.MsgTx().TxOut {
class, addrs, _, err := txscript.ExtractPkScriptAddrs(
txOut.Version, txOut.PkScript, idx.chainParams)
if err != nil {
// Non-standard outputs are skipped.
continue
}
if isSStx && class == txscript.NullDataTy {
addr, err := stake.AddrFromSStxPkScrCommitment(txOut.PkScript,
idx.chainParams)
if err != nil {
// Ignore unsupported address types.
continue
}
addrs = append(addrs, addr)
}
for _, addr := range addrs {
k, err := addrToKey(addr, idx.chainParams)
if err != nil {
// Ignore unsupported address types.
continue
}
usedAddrs[k] = struct{}{}
}
}
}
// Write all the newly used addresses to the database,
// skipping any keys that already exist. Write any
// addresses we see in mempool at this time, too,
// then remove them from the unconfirmed map drop
// dropping the old map and reassigning a new map.
idx.unconfirmedLock.Lock()
for k := range idx.mpExistsAddr {
usedAddrs[k] = struct{}{}
}
idx.mpExistsAddr = make(map[[addrKeySize]byte]struct{})
idx.unconfirmedLock.Unlock()
meta := dbTx.Metadata()
existsAddrIndex := meta.Bucket(existsAddrIndexKey)
newUsedAddrs := make(map[[addrKeySize]byte]struct{})
for k := range usedAddrs {
if !idx.existsAddress(existsAddrIndex, k) {
newUsedAddrs[k] = struct{}{}
}
}
for k := range newUsedAddrs {
err := dbPutExistsAddr(existsAddrIndex, k)
if err != nil {
return err
}
}
return nil
}
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
}
// disconnectTransactions updates the passed map by undoing transaction and
// spend information for all transactions in the passed block. Only
// transactions in the passed map are updated.
// This function should only ever have to disconnect transactions from the main
// chain, so most of the calls are directly the the tmdb which contains all this
// data in an organized bucket.
func (b *BlockChain) disconnectTickets(tixStore TicketStore,
node *blockNode,
block *dcrutil.Block) error {
tM := int64(b.chainParams.TicketMaturity)
height := node.height
// Nothing to do if tickets haven't yet possibly matured.
if height < b.chainParams.StakeEnabledHeight {
return nil
}
// PART 1: Remove newly maturing tickets
// Calculate block number for where new tickets matured from and retrieve
// this block from db.
matureNode, err := b.getNodeAtHeightFromTopNode(node, tM)
if err != nil {
return err
}
matureBlock, errBlock := b.getBlockFromHash(matureNode.hash)
if errBlock != nil {
return errBlock
}
// Store pointers to empty ticket data in the ticket store and mark them as
// non-existing.
for _, stx := range matureBlock.STransactions() {
if is, _ := stake.IsSStx(stx); is {
// Leave this pointing to nothing, as the ticket technically does not
// exist. It may exist when we add blocks later, but we can fill it
// out then.
td := &stake.TicketData{}
tpd := NewTicketPatchData(td,
TiNonexisting,
nil)
tixStore[*stx.Sha()] = tpd
}
}
// PART 2: Unrevoke any SSRtx in this block and restore them as
// missed tickets.
for _, stx := range block.STransactions() {
if is, _ := stake.IsSSRtx(stx); is {
// Move the revoked ticket to missed tickets. Obtain the
// revoked ticket data from the ticket database.
msgTx := stx.MsgTx()
sstxIn := msgTx.TxIn[0] // sstx input
sstxHash := sstxIn.PreviousOutPoint.Hash
td := b.tmdb.GetRevokedTicket(sstxHash)
if td == nil {
return fmt.Errorf("Failed to find revoked ticket %v in tmdb",
sstxHash)
}
tpd := NewTicketPatchData(td,
TiMissed,
nil)
tixStore[sstxHash] = tpd
}
}
// PART 3: Unspend or unmiss all tickets spent/missed/expired at this block.
// Query the stake db for used tickets (spentTicketDb), which includes all of
// the spent and missed tickets.
spentTickets, errDump := b.tmdb.DumpSpentTickets(height)
if errDump != nil {
return errDump
}
// Move all of these tickets into the ticket store as available tickets.
for hash, td := range spentTickets {
tpd := NewTicketPatchData(td,
TiAvailable,
nil)
tixStore[hash] = tpd
}
return nil
}
// connectTickets updates the passed map by removing removing any tickets
// from the ticket pool that have been considered spent or missed in this block
// according to the block header. Then, it connects all the newly mature tickets
// to the passed map.
func (b *BlockChain) connectTickets(tixStore TicketStore,
node *blockNode,
block *dcrutil.Block) error {
if tixStore == nil {
return fmt.Errorf("nil ticket store!")
}
// Nothing to do if tickets haven't yet possibly matured.
height := node.height
if height < b.chainParams.StakeEnabledHeight {
return nil
}
parentBlock, err := b.GetBlockFromHash(node.parentHash)
if err != nil {
return err
}
revocations := node.header.Revocations
tM := int64(b.chainParams.TicketMaturity)
// Skip a number of validation steps before we requiring chain
// voting.
if node.height >= b.chainParams.StakeValidationHeight {
regularTxTreeValid := dcrutil.IsFlagSet16(node.header.VoteBits,
dcrutil.BlockValid)
thisNodeStakeViewpoint := ViewpointPrevInvalidStake
if regularTxTreeValid {
thisNodeStakeViewpoint = ViewpointPrevValidStake
}
// We need the missed tickets bucket from the original perspective of
// the node.
missedTickets, err := b.GenerateMissedTickets(tixStore)
if err != nil {
return err
}
// TxStore at blockchain HEAD + TxTreeRegular of prevBlock (if
// validated) for this node.
txInputStoreStake, err := b.fetchInputTransactions(node, block,
thisNodeStakeViewpoint)
if err != nil {
errStr := fmt.Sprintf("fetchInputTransactions failed for incoming "+
"node %v; error given: %v", node.hash, err)
return errors.New(errStr)
}
// PART 1: Spend/miss winner tickets
// Iterate through all the SSGen (vote) tx in the block and add them to
// a map of tickets that were actually used.
spentTicketsFromBlock := make(map[chainhash.Hash]bool)
numberOfSSgen := 0
for _, staketx := range block.STransactions() {
if is, _ := stake.IsSSGen(staketx); is {
msgTx := staketx.MsgTx()
sstxIn := msgTx.TxIn[1] // sstx input
sstxHash := sstxIn.PreviousOutPoint.Hash
originTx, exists := txInputStoreStake[sstxHash]
if !exists {
str := fmt.Sprintf("unable to find input transaction "+
"%v for transaction %v", sstxHash, staketx.Sha())
return ruleError(ErrMissingTx, str)
}
sstxHeight := originTx.BlockHeight
// Check maturity of ticket; we can only spend the ticket after it
// hits maturity at height + tM + 1.
if (height - sstxHeight) < (tM + 1) {
blockSha := block.Sha()
errStr := fmt.Sprintf("Error: A ticket spend as an SSGen in "+
"block height %v was immature! Block sha %v",
height,
blockSha)
return errors.New(errStr)
}
// Fill out the ticket data.
spentTicketsFromBlock[sstxHash] = true
numberOfSSgen++
}
}
// Obtain the TicketsPerBlock many tickets that were selected this round,
// then check these against the tickets that were actually used to make
// sure that any SSGen actually match the selected tickets. Commit the
// spent or missed tickets to the ticket store after.
spentAndMissedTickets := make(TicketStore)
tixSpent := 0
tixMissed := 0
// Sort the entire list of tickets lexicographically by sorting
// each bucket and then appending it to the list. Start by generating
// a prefix matched map of tickets to speed up the lookup.
tpdBucketMap := make(map[uint8][]*TicketPatchData)
for _, tpd := range tixStore {
// Bucket does not exist.
if _, ok := tpdBucketMap[tpd.td.Prefix]; !ok {
tpdBucketMap[tpd.td.Prefix] = make([]*TicketPatchData, 1)
tpdBucketMap[tpd.td.Prefix][0] = tpd
} else {
// Bucket exists.
data := tpdBucketMap[tpd.td.Prefix]
tpdBucketMap[tpd.td.Prefix] = append(data, tpd)
}
}
totalTickets := 0
sortedSlice := make([]*stake.TicketData, 0)
for i := 0; i < stake.BucketsSize; i++ {
ltb, err := b.GenerateLiveTicketBucket(tixStore, tpdBucketMap,
uint8(i))
if err != nil {
h := node.hash
str := fmt.Sprintf("Failed to generate live ticket bucket "+
"%v for node %v, height %v! Error: %v",
i,
h,
node.height,
err.Error())
return fmt.Errorf(str)
}
mapLen := len(ltb)
tempTdSlice := stake.NewTicketDataSlice(mapLen)
itr := 0 // Iterator
for _, td := range ltb {
tempTdSlice[itr] = td
itr++
totalTickets++
}
sort.Sort(tempTdSlice)
sortedSlice = append(sortedSlice, tempTdSlice...)
}
// Use the parent block's header to seed a PRNG that picks the
// lottery winners.
ticketsPerBlock := int(b.chainParams.TicketsPerBlock)
pbhB, err := parentBlock.MsgBlock().Header.Bytes()
if err != nil {
return err
}
prng := stake.NewHash256PRNG(pbhB)
ts, err := stake.FindTicketIdxs(int64(totalTickets), ticketsPerBlock, prng)
if err != nil {
return err
}
ticketsToSpendOrMiss := make([]*stake.TicketData, ticketsPerBlock,
ticketsPerBlock)
for i, idx := range ts {
ticketsToSpendOrMiss[i] = sortedSlice[idx]
}
// Spend or miss these tickets by checking for their existence in the
// passed spentTicketsFromBlock map.
for _, ticket := range ticketsToSpendOrMiss {
// Move the ticket from active tickets map into the used tickets
// map if the ticket was spent.
wasSpent, _ := spentTicketsFromBlock[ticket.SStxHash]
if wasSpent {
tpd := NewTicketPatchData(ticket, TiSpent, nil)
spentAndMissedTickets[ticket.SStxHash] = tpd
tixSpent++
} else { // Ticket missed being spent and --> false or nil
tpd := NewTicketPatchData(ticket, TiMissed, nil)
spentAndMissedTickets[ticket.SStxHash] = tpd
tixMissed++
}
}
// This error is thrown if for some reason there exists an SSGen in
// the block that doesn't spend a ticket from the eligible list of
// tickets, thus making it invalid.
if tixSpent != numberOfSSgen {
errStr := fmt.Sprintf("an invalid number %v "+
"tickets was spent, but %v many tickets should "+
"have been spent!", tixSpent, numberOfSSgen)
return errors.New(errStr)
}
if tixMissed != (ticketsPerBlock - numberOfSSgen) {
errStr := fmt.Sprintf("an invalid number %v "+
"tickets was missed, but %v many tickets should "+
"have been missed!", tixMissed,
ticketsPerBlock-numberOfSSgen)
return errors.New(errStr)
}
if (tixSpent + tixMissed) != int(b.chainParams.TicketsPerBlock) {
errStr := fmt.Sprintf("an invalid number %v "+
"tickets was spent and missed, but TicketsPerBlock %v many "+
"tickets should have been spent!", tixSpent,
ticketsPerBlock)
return errors.New(errStr)
}
// Calculate all the tickets expiring this block and mark them as missed.
tpdBucketMap = make(map[uint8][]*TicketPatchData)
for _, tpd := range tixStore {
// Bucket does not exist.
if _, ok := tpdBucketMap[tpd.td.Prefix]; !ok {
tpdBucketMap[tpd.td.Prefix] = make([]*TicketPatchData, 1)
tpdBucketMap[tpd.td.Prefix][0] = tpd
} else {
// Bucket exists.
data := tpdBucketMap[tpd.td.Prefix]
tpdBucketMap[tpd.td.Prefix] = append(data, tpd)
}
}
toExpireHeight := node.height - int64(b.chainParams.TicketExpiry)
if !(toExpireHeight < int64(b.chainParams.StakeEnabledHeight)) {
for i := 0; i < stake.BucketsSize; i++ {
// Generate the live ticket bucket.
ltb, err := b.GenerateLiveTicketBucket(tixStore,
tpdBucketMap, uint8(i))
if err != nil {
return err
}
for _, ticket := range ltb {
if ticket.BlockHeight == toExpireHeight {
tpd := NewTicketPatchData(ticket, TiMissed, nil)
spentAndMissedTickets[ticket.SStxHash] = tpd
}
}
}
}
// Merge the ticket store patch containing the spent and missed tickets
// with the ticket store.
for hash, tpd := range spentAndMissedTickets {
tixStore[hash] = tpd
}
// At this point our tixStore now contains all the spent and missed tx
// as per this block.
// PART 2: Remove tickets that were missed and are now revoked.
// Iterate through all the SSGen (vote) tx in the block and add them to
// a map of tickets that were actually used.
revocationsFromBlock := make(map[chainhash.Hash]struct{})
numberOfSSRtx := 0
for _, staketx := range block.STransactions() {
if is, _ := stake.IsSSRtx(staketx); is {
msgTx := staketx.MsgTx()
sstxIn := msgTx.TxIn[0] // sstx input
sstxHash := sstxIn.PreviousOutPoint.Hash
// Fill out the ticket data.
revocationsFromBlock[sstxHash] = struct{}{}
numberOfSSRtx++
}
}
if numberOfSSRtx != int(revocations) {
errStr := fmt.Sprintf("an invalid revocations %v was calculated "+
"the block header indicates %v instead", numberOfSSRtx,
revocations)
return errors.New(errStr)
}
// Lookup the missed ticket. If we find it in the patch data,
// modify the patch data so that it doesn't exist.
// Otherwise, just modify load the missed ticket data from
// the ticket db and create patch data based on that.
for hash, _ := range revocationsFromBlock {
ticketWasMissed := false
if td, is := missedTickets[hash]; is {
maturedHeight := td.BlockHeight
// Check maturity of ticket; we can only spend the ticket after it
// hits maturity at height + tM + 2.
if height < maturedHeight+2 {
blockSha := block.Sha()
errStr := fmt.Sprintf("Error: A ticket spend as an "+
"SSRtx in block height %v was immature! Block sha %v",
height,
blockSha)
return errors.New(errStr)
}
ticketWasMissed = true
}
if !ticketWasMissed {
errStr := fmt.Sprintf("SSRtx spent missed sstx %v, "+
"but that missed sstx could not be found!",
hash)
return errors.New(errStr)
}
}
}
// PART 3: Add newly maturing tickets
// This is the only chunk we need to do for blocks appearing before
// stake validation height.
// Calculate block number for where new tickets are maturing from and retrieve
// this block from db.
// Get the block that is maturing.
matureNode, err := b.getNodeAtHeightFromTopNode(node, tM)
if err != nil {
return err
}
matureBlock, errBlock := b.getBlockFromHash(matureNode.hash)
if errBlock != nil {
return errBlock
}
// Maturing tickets are from the maturingBlock; fill out the ticket patch data
// and then push them to the tixStore.
for _, stx := range matureBlock.STransactions() {
if is, _ := stake.IsSStx(stx); is {
// Calculate the prefix for pre-sort.
sstxHash := *stx.Sha()
prefix := uint8(sstxHash[0])
// Fill out the ticket data.
td := stake.NewTicketData(sstxHash,
prefix,
chainhash.Hash{},
height,
false, // not missed
false) // not expired
tpd := NewTicketPatchData(td,
TiAvailable,
nil)
tixStore[*stx.Sha()] = tpd
}
}
return nil
}
// upgradeToVersion2 upgrades a version 1 blockchain to version 2, allowing
// use of the new on-disk ticket database.
func (b *BlockChain) upgradeToVersion2() error {
log.Infof("Initializing upgrade to database version 2")
best := b.BestSnapshot()
progressLogger := progresslog.NewBlockProgressLogger("Upgraded", log)
// The upgrade is atomic, so there is no need to set the flag that
// the database is undergoing an upgrade here. Get the stake node
// for the genesis block, and then begin connecting stake nodes
// incrementally.
err := b.db.Update(func(dbTx database.Tx) error {
bestStakeNode, errLocal := stake.InitDatabaseState(dbTx, b.chainParams)
if errLocal != nil {
return errLocal
}
parent, errLocal := dbFetchBlockByHeight(dbTx, 0)
if errLocal != nil {
return errLocal
}
for i := int64(1); i <= best.Height; i++ {
block, errLocal := dbFetchBlockByHeight(dbTx, i)
if errLocal != nil {
return errLocal
}
// If we need the tickets, fetch them too.
var newTickets []chainhash.Hash
if i >= b.chainParams.StakeEnabledHeight {
matureHeight := i - int64(b.chainParams.TicketMaturity)
matureBlock, errLocal := dbFetchBlockByHeight(dbTx, matureHeight)
if errLocal != nil {
return errLocal
}
for _, stx := range matureBlock.MsgBlock().STransactions {
if is, _ := stake.IsSStx(stx); is {
h := stx.TxSha()
newTickets = append(newTickets, h)
}
}
}
// Iteratively connect the stake nodes in memory.
header := block.MsgBlock().Header
bestStakeNode, errLocal = bestStakeNode.ConnectNode(header,
ticketsSpentInBlock(block), ticketsRevokedInBlock(block),
newTickets)
if errLocal != nil {
return errLocal
}
// Write the top block stake node to the database.
errLocal = stake.WriteConnectedBestNode(dbTx, bestStakeNode,
*best.Hash)
if errLocal != nil {
return errLocal
}
// Write the best block node when we reach it.
if i == best.Height {
b.bestNode.stakeNode = bestStakeNode
b.bestNode.stakeUndoData = bestStakeNode.UndoData()
b.bestNode.newTickets = newTickets
b.bestNode.ticketsSpent = ticketsSpentInBlock(block)
b.bestNode.ticketsRevoked = ticketsRevokedInBlock(block)
}
progressLogger.LogBlockHeight(block, parent)
parent = block
}
// Write the new database version.
b.dbInfo.version = 2
errLocal = dbPutDatabaseInfo(dbTx, b.dbInfo)
if errLocal != nil {
return errLocal
}
return nil
})
if err != nil {
return err
}
log.Infof("Upgrade to new stake database was successful!")
return nil
}
// indexBlock extract all of the standard addresses from all of the transactions
// in the passed block and maps each of them to the assocaited transaction using
// the passed map.
func (idx *AddrIndex) indexBlock(data writeIndexData, block, parent *dcrutil.Block, view *blockchain.UtxoViewpoint) {
regularTxTreeValid := dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits,
dcrutil.BlockValid)
var stakeStartIdx int
if regularTxTreeValid {
for txIdx, tx := range parent.Transactions() {
// Coinbases do not reference any inputs. Since the block is
// required to have already gone through full validation, it has
// already been proven on the first transaction in the block is
// a coinbase.
if txIdx != 0 {
for _, txIn := range tx.MsgTx().TxIn {
// The view should always have the input since
// the index contract requires it, however, be
// safe and simply ignore any missing entries.
origin := &txIn.PreviousOutPoint
entry := view.LookupEntry(&origin.Hash)
if entry == nil {
log.Warnf("Missing input %v for tx %v while "+
"indexing block %v (height %v)\n", origin.Hash,
tx.Sha(), block.Sha(), block.Height())
continue
}
version := entry.ScriptVersionByIndex(origin.Index)
pkScript := entry.PkScriptByIndex(origin.Index)
txType := entry.TransactionType()
idx.indexPkScript(data, version, pkScript, txIdx,
txType == stake.TxTypeSStx)
}
}
for _, txOut := range tx.MsgTx().TxOut {
idx.indexPkScript(data, txOut.Version, txOut.PkScript, txIdx,
false)
}
}
stakeStartIdx = len(parent.Transactions())
}
for txIdx, tx := range block.STransactions() {
msgTx := tx.MsgTx()
thisTxOffset := txIdx + stakeStartIdx
isSSGen, _ := stake.IsSSGen(msgTx)
for i, txIn := range msgTx.TxIn {
// Skip stakebases.
if isSSGen && i == 0 {
continue
}
// The view should always have the input since
// the index contract requires it, however, be
// safe and simply ignore any missing entries.
origin := &txIn.PreviousOutPoint
entry := view.LookupEntry(&origin.Hash)
if entry == nil {
log.Warnf("Missing input %v for tx %v while "+
"indexing block %v (height %v)\n", origin.Hash,
tx.Sha(), block.Sha(), block.Height())
continue
}
version := entry.ScriptVersionByIndex(origin.Index)
pkScript := entry.PkScriptByIndex(origin.Index)
txType := entry.TransactionType()
idx.indexPkScript(data, version, pkScript, thisTxOffset,
txType == stake.TxTypeSStx)
}
isSStx, _ := stake.IsSStx(msgTx)
for _, txOut := range msgTx.TxOut {
idx.indexPkScript(data, txOut.Version, txOut.PkScript,
thisTxOffset, isSStx)
}
}
}
