// ticketsRevokedInBlock fetches a list of tickets that were revoked in the
// block.
func ticketsRevokedInBlock(bl *dcrutil.Block) []chainhash.Hash {
var tickets []chainhash.Hash
for _, stx := range bl.MsgBlock().STransactions {
if stake.DetermineTxType(stx) == stake.TxTypeSSRtx {
tickets = append(tickets, stx.TxIn[0].PreviousOutPoint.Hash)
}
}
return tickets
}
// DebugBlockString dumps a verbose message containing information about
// the transactions of a block.
func DebugBlockString(block *dcrutil.Block) string {
if block == nil {
return "block pointer nil"
}
var buffer bytes.Buffer
hash := block.Sha()
str := fmt.Sprintf("Block Header: %v Height: %v \n",
hash, block.Height())
buffer.WriteString(str)
str = fmt.Sprintf("Block contains %v regular transactions "+
"and %v stake transactions \n",
len(block.Transactions()),
len(block.STransactions()))
buffer.WriteString(str)
str = fmt.Sprintf("List of regular transactions \n")
buffer.WriteString(str)
for i, tx := range block.Transactions() {
str = fmt.Sprintf("Index: %v, Hash: %v \n", i, tx.Sha())
buffer.WriteString(str)
}
if len(block.STransactions()) == 0 {
return buffer.String()
}
str = fmt.Sprintf("List of stake transactions \n")
buffer.WriteString(str)
for i, stx := range block.STransactions() {
txTypeStr := ""
txType := stake.DetermineTxType(stx)
switch txType {
case stake.TxTypeSStx:
txTypeStr = "SStx"
case stake.TxTypeSSGen:
txTypeStr = "SSGen"
case stake.TxTypeSSRtx:
txTypeStr = "SSRtx"
default:
txTypeStr = "Error"
}
str = fmt.Sprintf("Index: %v, Type: %v, Hash: %v \n",
i, txTypeStr, stx.Sha())
buffer.WriteString(str)
}
return buffer.String()
}
// AddTxOuts adds all outputs in the passed transaction which are not provably
// unspendable to the view. When the view already has entries for any of the
// outputs, they are simply marked unspent. All fields will be updated for
// existing entries since it's possible it has changed during a reorg.
func (view *UtxoViewpoint) AddTxOuts(tx *dcrutil.Tx, blockHeight int64,
blockIndex uint32) {
msgTx := tx.MsgTx()
// When there are not already any utxos associated with the transaction,
// add a new entry for it to the view.
entry := view.LookupEntry(tx.Sha())
if entry == nil {
txType := stake.DetermineTxType(msgTx)
entry = newUtxoEntry(msgTx.Version, uint32(blockHeight),
blockIndex, IsCoinBaseTx(msgTx), msgTx.Expiry != 0, txType)
if txType == stake.TxTypeSStx {
stakeExtra := make([]byte, serializeSizeForMinimalOutputs(tx))
putTxToMinimalOutputs(stakeExtra, tx)
entry.stakeExtra = stakeExtra
}
view.entries[*tx.Sha()] = entry
} else {
entry.height = uint32(blockHeight)
entry.index = uint32(blockIndex)
}
entry.modified = true
// Loop all of the transaction outputs and add those which are not
// provably unspendable.
for txOutIdx, txOut := range tx.MsgTx().TxOut {
// TODO allow pruning of stake utxs after all other outputs are spent
if txscript.IsUnspendable(txOut.Value, txOut.PkScript) {
continue
}
// Update existing entries. All fields are updated because it's
// possible (although extremely unlikely) that the existing
// entry is being replaced by a different transaction with the
// same hash. This is allowed so long as the previous
// transaction is fully spent.
if output, ok := entry.sparseOutputs[uint32(txOutIdx)]; ok {
output.spent = false
output.amount = txOut.Value
output.scriptVersion = txOut.Version
output.pkScript = txOut.PkScript
output.compressed = false
continue
}
// Add the unspent transaction output.
entry.sparseOutputs[uint32(txOutIdx)] = &utxoOutput{
spent: false,
amount: txOut.Value,
scriptVersion: txOut.Version,
pkScript: txOut.PkScript,
compressed: false,
}
}
return
}
// TestCheckTransactionStandard tests the checkTransactionStandard API.
func TestCheckTransactionStandard(t *testing.T) {
// Create some dummy, but otherwise standard, data for transactions.
prevOutHash, err := chainhash.NewHashFromStr("01")
if err != nil {
t.Fatalf("NewShaHashFromStr: unexpected error: %v", err)
}
dummyPrevOut := wire.OutPoint{Hash: *prevOutHash, Index: 1, Tree: 0}
dummySigScript := bytes.Repeat([]byte{0x00}, 65)
dummyTxIn := wire.TxIn{
PreviousOutPoint: dummyPrevOut,
Sequence: wire.MaxTxInSequenceNum,
ValueIn: 0,
BlockHeight: 0,
BlockIndex: 0,
SignatureScript: dummySigScript,
}
addrHash := [20]byte{0x01}
addr, err := dcrutil.NewAddressPubKeyHash(addrHash[:],
&chaincfg.TestNetParams, chainec.ECTypeSecp256k1)
if err != nil {
t.Fatalf("NewAddressPubKeyHash: unexpected error: %v", err)
}
dummyPkScript, err := txscript.PayToAddrScript(addr)
if err != nil {
t.Fatalf("PayToAddrScript: unexpected error: %v", err)
}
dummyTxOut := wire.TxOut{
Value: 100000000, // 1 BTC
Version: 0,
PkScript: dummyPkScript,
}
tests := []struct {
name string
tx wire.MsgTx
height int64
isStandard bool
code wire.RejectCode
}{
{
name: "Typical pay-to-pubkey-hash transaction",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{&dummyTxOut},
LockTime: 0,
},
height: 300000,
isStandard: true,
},
{
name: "Transaction version too high",
tx: wire.MsgTx{
Version: int32(wire.TxVersion + 1),
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{&dummyTxOut},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Transaction is not finalized",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{{
PreviousOutPoint: dummyPrevOut,
SignatureScript: dummySigScript,
Sequence: 0,
}},
TxOut: []*wire.TxOut{&dummyTxOut},
LockTime: 300001,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Transaction size is too large",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{{
Value: 0,
PkScript: bytes.Repeat([]byte{0x00},
maxStandardTxSize+1),
}},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Signature script size is too large",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{{
PreviousOutPoint: dummyPrevOut,
SignatureScript: bytes.Repeat([]byte{0x00},
maxStandardSigScriptSize+1),
Sequence: wire.MaxTxInSequenceNum,
}},
TxOut: []*wire.TxOut{&dummyTxOut},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Signature script that does more than push data",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{{
PreviousOutPoint: dummyPrevOut,
SignatureScript: []byte{
txscript.OP_CHECKSIGVERIFY},
Sequence: wire.MaxTxInSequenceNum,
}},
TxOut: []*wire.TxOut{&dummyTxOut},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Valid but non standard public key script",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{{
Value: 100000000,
PkScript: []byte{txscript.OP_TRUE},
}},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "More than four nulldata outputs",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{{
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}, {
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}, {
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}, {
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}, {
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectNonstandard,
},
{
name: "Dust output",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{{
Value: 0,
PkScript: dummyPkScript,
}},
LockTime: 0,
},
height: 300000,
isStandard: false,
code: wire.RejectDust,
},
{
name: "One nulldata output with 0 amount (standard)",
tx: wire.MsgTx{
Version: 1,
TxIn: []*wire.TxIn{&dummyTxIn},
TxOut: []*wire.TxOut{{
Value: 0,
PkScript: []byte{txscript.OP_RETURN},
}},
LockTime: 0,
},
height: 300000,
isStandard: true,
},
}
timeSource := blockchain.NewMedianTime()
for _, test := range tests {
// Ensure standardness is as expected.
tx := dcrutil.NewTx(&test.tx)
err := checkTransactionStandard(tx, stake.DetermineTxType(tx),
test.height, timeSource, defaultMinRelayTxFee)
if err == nil && test.isStandard {
// Test passes since function returned standard for a
// transaction which is intended to be standard.
continue
}
if err == nil && !test.isStandard {
t.Errorf("checkTransactionStandard (%s): standard when "+
"it should not be", test.name)
continue
}
if err != nil && test.isStandard {
t.Errorf("checkTransactionStandard (%s): nonstandard "+
"when it should not be: %v", test.name, err)
continue
}
// Ensure error type is a TxRuleError inside of a RuleError.
rerr, ok := err.(RuleError)
if !ok {
t.Errorf("checkTransactionStandard (%s): unexpected "+
"error type - got %T", test.name, err)
continue
}
txrerr, ok := rerr.Err.(TxRuleError)
if !ok {
t.Errorf("checkTransactionStandard (%s): unexpected "+
"error type - got %T", test.name, rerr.Err)
continue
}
// Ensure the reject code is the expected one.
if txrerr.RejectCode != test.code {
t.Errorf("checkTransactionStandard (%s): unexpected "+
"error code - got %v, want %v", test.name,
txrerr.RejectCode, test.code)
continue
}
}
}
// disconnectTransactionSlice updates the view by removing all of the transactions
// created by the passed slice of transactions, restoring all utxos the
// transactions spent by using the provided spent txo information, and setting
// the best hash for the view to the block before the passed block.
func (view *UtxoViewpoint) disconnectTransactionSlice(transactions []*dcrutil.Tx,
height int64, stxosPtr *[]spentTxOut) (int, error) {
if stxosPtr == nil {
return 0, AssertError("passed pointer to non-existing stxos slice")
}
stxos := *stxosPtr
stxoIdx := len(stxos) - 1
if stxoIdx == -1 {
return 0, nil
}
for txIdx := len(transactions) - 1; txIdx > -1; txIdx-- {
tx := transactions[txIdx]
msgTx := tx.MsgTx()
txType := stake.DetermineTxType(msgTx)
// Clear this transaction from the view if it already exists or
// create a new empty entry for when it does not. This is done
// because the code relies on its existence in the view in order
// to signal modifications have happened.
isCoinbase := txIdx == 0
entry := view.entries[*tx.Sha()]
if entry == nil {
entry = newUtxoEntry(msgTx.Version, uint32(height),
uint32(txIdx), IsCoinBaseTx(msgTx), msgTx.Expiry != 0, txType)
if txType == stake.TxTypeSStx {
stakeExtra := make([]byte, serializeSizeForMinimalOutputs(tx))
putTxToMinimalOutputs(stakeExtra, tx)
entry.stakeExtra = stakeExtra
}
view.entries[*tx.Sha()] = entry
}
entry.modified = true
entry.sparseOutputs = make(map[uint32]*utxoOutput)
// Loop backwards through all of the transaction inputs (except
// for the coinbase which has no inputs) and unspend the
// referenced txos. This is necessary to match the order of the
// spent txout entries.
if isCoinbase {
continue
}
for txInIdx := len(msgTx.TxIn) - 1; txInIdx > -1; txInIdx-- {
// Ensure the spent txout index is decremented to stay
// in sync with the transaction input.
stxo := &stxos[stxoIdx]
stxoIdx--
// When there is not already an entry for the referenced
// transaction in the view, it means it was fully spent,
// so create a new utxo entry in order to resurrect it.
txIn := msgTx.TxIn[txInIdx]
originHash := &txIn.PreviousOutPoint.Hash
originInIndex := txIn.PreviousOutPoint.Index
//originHeight := txIn.BlockHeight
// originIndex := txIn.BlockIndex
entry := view.entries[*originHash]
if entry == nil {
entry = newUtxoEntry(stxo.txVersion, stxo.height,
stxo.index, stxo.isCoinBase, stxo.hasExpiry,
stxo.txType)
if txType == stake.TxTypeSStx {
//stakeExtra := make([]byte,
// serializeSizeForMinimalOutputs(tx))
// putTxToMinimalOutputs(stakeExtra, tx)
// entry.stakeExtra = stakeExtra
entry.stakeExtra = stxo.stakeExtra
}
view.entries[*originHash] = entry
}
// Mark the entry as modified since it is either new
// or will be changed below.
entry.modified = true
// Restore the specific utxo using the stxo data from
// the spend journal if it doesn't already exist in the
// view.
output, ok := entry.sparseOutputs[originInIndex]
if !ok {
// Add the unspent transaction output.
entry.sparseOutputs[originInIndex] = &utxoOutput{
compressed: stxo.compressed,
spent: false,
amount: txIn.ValueIn,
scriptVersion: stxo.scriptVersion,
pkScript: stxo.pkScript,
}
continue
}
// Mark the existing referenced transaction output as
// unspent.
output.spent = false
}
}
return stxoIdx + 1, nil
}
// disconnectTransactions updates the view by removing all of the transactions
// created by the passed block, restoring all utxos the transactions spent by
// using the provided spent txo information, and setting the best hash for the
// view to the block before the passed block.
//
// This function will ONLY work correctly for a single transaction tree at a
// time because of index tracking.
func (b *BlockChain) disconnectTransactions(view *UtxoViewpoint,
block *dcrutil.Block, parent *dcrutil.Block, stxos []spentTxOut) error {
// Sanity check the correct number of stxos are provided.
if len(stxos) != countSpentOutputs(block, parent) {
return AssertError(fmt.Sprintf("disconnectTransactions "+
"called with bad spent transaction out information "+
"(len stxos %v, count is %v)", len(stxos),
countSpentOutputs(block, parent)))
}
// Loop backwards through all transactions so everything is unspent in
// reverse order. This is necessary since transactions later in a block
// can spend from previous ones.
regularTxTreeValid := dcrutil.IsFlagSet16(block.MsgBlock().Header.VoteBits,
dcrutil.BlockValid)
thisNodeStakeViewpoint := ViewpointPrevInvalidStake
if regularTxTreeValid {
thisNodeStakeViewpoint = ViewpointPrevValidStake
}
view.SetStakeViewpoint(thisNodeStakeViewpoint)
err := view.fetchInputUtxos(b.db, block, parent)
if err != nil {
return err
}
stxoIdx := len(stxos) - 1
transactions := block.STransactions()
for txIdx := len(transactions) - 1; txIdx > -1; txIdx-- {
tx := transactions[txIdx]
msgTx := tx.MsgTx()
tt := stake.DetermineTxType(msgTx)
// Clear this transaction from the view if it already exists or
// create a new empty entry for when it does not. This is done
// because the code relies on its existence in the view in order
// to signal modifications have happened.
entry := view.entries[*tx.Sha()]
if entry == nil {
entry = newUtxoEntry(msgTx.Version, uint32(block.Height()),
uint32(txIdx), IsCoinBaseTx(msgTx), msgTx.Expiry != 0, tt)
if tt == stake.TxTypeSStx {
stakeExtra := make([]byte, serializeSizeForMinimalOutputs(tx))
putTxToMinimalOutputs(stakeExtra, tx)
entry.stakeExtra = stakeExtra
}
view.entries[*tx.Sha()] = entry
}
entry.modified = true
entry.sparseOutputs = make(map[uint32]*utxoOutput)
// Loop backwards through all of the transaction inputs (except
// for the coinbase which has no inputs) and unspend the
// referenced txos. This is necessary to match the order of the
// spent txout entries.
for txInIdx := len(tx.MsgTx().TxIn) - 1; txInIdx > -1; txInIdx-- {
// Skip empty vote stakebases.
if txInIdx == 0 && (tt == stake.TxTypeSSGen) {
continue
}
// Ensure the spent txout index is decremented to stay
// in sync with the transaction input.
stxo := &stxos[stxoIdx]
stxoIdx--
// When there is not already an entry for the referenced
// transaction in the view, it means it was fully spent,
// so create a new utxo entry in order to resurrect it.
txIn := tx.MsgTx().TxIn[txInIdx]
originHash := &txIn.PreviousOutPoint.Hash
originIndex := txIn.PreviousOutPoint.Index
entry := view.LookupEntry(originHash)
if entry == nil {
if !stxo.txFullySpent {
return AssertError(fmt.Sprintf("tried to revive utx %v from "+
"non-fully spent stx entry", originHash))
}
entry = newUtxoEntry(tx.MsgTx().Version, stxo.height,
stxo.index, stxo.isCoinBase, stxo.hasExpiry,
stxo.txType)
if stxo.txType == stake.TxTypeSStx {
entry.stakeExtra = stxo.stakeExtra
}
view.entries[*originHash] = entry
}
// Mark the entry as modified since it is either new
// or will be changed below.
entry.modified = true
// Restore the specific utxo using the stxo data from
// the spend journal if it doesn't already exist in the
// view.
output, ok := entry.sparseOutputs[originIndex]
if !ok {
// Add the unspent transaction output.
entry.sparseOutputs[originIndex] = &utxoOutput{
compressed: stxo.compressed,
spent: false,
amount: txIn.ValueIn,
scriptVersion: stxo.scriptVersion,
pkScript: stxo.pkScript,
}
continue
}
// Mark the existing referenced transaction output as
// unspent.
output.spent = false
}
}
// There is no regular tx from before the genesis block, so ignore the genesis
// block for the next step.
if parent != nil && block.Height() != 0 {
// Only bother to unspend transactions if the parent's tx tree was
// validated. Otherwise, these transactions were never in the blockchain's
// history in the first place.
if regularTxTreeValid {
view.SetStakeViewpoint(ViewpointPrevValidInitial)
err = view.fetchInputUtxos(b.db, block, parent)
if err != nil {
return err
}
transactions := parent.Transactions()
for txIdx := len(transactions) - 1; txIdx > -1; txIdx-- {
tx := transactions[txIdx]
// Clear this transaction from the view if it already exists or
// create a new empty entry for when it does not. This is done
// because the code relies on its existence in the view in order
// to signal modifications have happened.
isCoinbase := txIdx == 0
entry := view.entries[*tx.Sha()]
if entry == nil {
entry = newUtxoEntry(tx.MsgTx().Version,
uint32(parent.Height()), uint32(txIdx), isCoinbase,
tx.MsgTx().Expiry != 0, stake.TxTypeRegular)
view.entries[*tx.Sha()] = entry
}
entry.modified = true
entry.sparseOutputs = make(map[uint32]*utxoOutput)
// Loop backwards through all of the transaction inputs (except
// for the coinbase which has no inputs) and unspend the
// referenced txos. This is necessary to match the order of the
// spent txout entries.
if isCoinbase {
continue
}
for txInIdx := len(tx.MsgTx().TxIn) - 1; txInIdx > -1; txInIdx-- {
// Ensure the spent txout index is decremented to stay
// in sync with the transaction input.
stxo := &stxos[stxoIdx]
stxoIdx--
// When there is not already an entry for the referenced
// transaction in the view, it means it was fully spent,
// so create a new utxo entry in order to resurrect it.
txIn := tx.MsgTx().TxIn[txInIdx]
originHash := &txIn.PreviousOutPoint.Hash
originIndex := txIn.PreviousOutPoint.Index
entry := view.entries[*originHash]
if entry == nil {
if !stxo.txFullySpent {
return AssertError(fmt.Sprintf("tried to "+
"revive utx %v from non-fully spent stx entry",
originHash))
}
entry = newUtxoEntry(tx.MsgTx().Version,
stxo.height, stxo.index, stxo.isCoinBase,
stxo.hasExpiry, stxo.txType)
if stxo.txType == stake.TxTypeSStx {
entry.stakeExtra = stxo.stakeExtra
}
view.entries[*originHash] = entry
}
// Mark the entry as modified since it is either new
// or will be changed below.
entry.modified = true
// Restore the specific utxo using the stxo data from
// the spend journal if it doesn't already exist in the
// view.
output, ok := entry.sparseOutputs[originIndex]
if !ok {
// Add the unspent transaction output.
entry.sparseOutputs[originIndex] = &utxoOutput{
compressed: stxo.compressed,
spent: false,
amount: txIn.ValueIn,
scriptVersion: stxo.scriptVersion,
pkScript: stxo.pkScript,
}
continue
}
// Mark the existing referenced transaction output as
// unspent.
output.spent = false
}
}
}
}
// Update the best hash for view to the previous block since all of the
// transactions for the current block have been disconnected.
view.SetBestHash(parent.Sha())
return nil
}
// connectTransaction updates the view by adding all new utxos created by the
// passed transaction and marking all utxos that the transactions spend as
// spent. In addition, when the 'stxos' argument is not nil, it will be updated
// to append an entry for each spent txout. An error will be returned if the
// view does not contain the required utxos.
func (view *UtxoViewpoint) connectTransaction(tx *dcrutil.Tx, blockHeight int64,
blockIndex uint32, stxos *[]spentTxOut) error {
msgTx := tx.MsgTx()
// Coinbase transactions don't have any inputs to spend.
if IsCoinBaseTx(msgTx) {
// Add the transaction's outputs as available utxos.
view.AddTxOuts(tx, blockHeight, blockIndex)
return nil
}
// Spend the referenced utxos by marking them spent in the view and,
// if a slice was provided for the spent txout details, append an entry
// to it.
txType := stake.DetermineTxType(msgTx)
for i, txIn := range msgTx.TxIn {
if i == 0 && (txType == stake.TxTypeSSGen) {
continue
}
originIndex := txIn.PreviousOutPoint.Index
entry := view.entries[txIn.PreviousOutPoint.Hash]
// Ensure the referenced utxo exists in the view. This should
// never happen unless there is a bug is introduced in the code.
if entry == nil {
return AssertError(fmt.Sprintf("view missing input %v",
txIn.PreviousOutPoint))
}
entry.SpendOutput(originIndex)
// Don't create the stxo details if not requested.
if stxos == nil {
continue
}
// Populate the stxo details using the utxo entry. When the
// transaction is fully spent, set the additional stxo fields
// accordingly since those details will no longer be available
// in the utxo set.
var stxo = spentTxOut{
compressed: false,
amount: txIn.ValueIn,
scriptVersion: entry.ScriptVersionByIndex(originIndex),
pkScript: entry.PkScriptByIndex(originIndex),
}
if entry.IsFullySpent() {
stxo.txVersion = entry.TxVersion()
stxo.height = uint32(entry.BlockHeight())
stxo.index = entry.BlockIndex()
stxo.isCoinBase = entry.IsCoinBase()
stxo.hasExpiry = entry.HasExpiry()
stxo.txType = entry.txType
stxo.txFullySpent = true
if entry.txType == stake.TxTypeSStx {
stxo.stakeExtra = entry.stakeExtra
}
}
// Append the entry to the provided spent txouts slice.
*stxos = append(*stxos, stxo)
}
// Add the transaction's outputs as available utxos.
view.AddTxOuts(tx, blockHeight, blockIndex)
return nil
}
// indexBlockAddrs returns a populated index of the all the transactions in the
// passed block based on the addresses involved in each transaction.
func (a *addrIndexer) indexBlockAddrs(blk *dcrutil.Block,
parent *dcrutil.Block) (database.BlockAddrIndex, error) {
var addrIndex database.BlockAddrIndex
_, stxLocs, err := blk.TxLoc()
if err != nil {
return nil, err
}
txTreeRegularValid := dcrutil.IsFlagSet16(blk.MsgBlock().Header.VoteBits,
dcrutil.BlockValid)
// Add regular transactions iff the block was validated.
if txTreeRegularValid {
txLocs, _, err := parent.TxLoc()
if err != nil {
return nil, err
}
for txIdx, tx := range parent.Transactions() {
// Tx's offset and length in the block.
locInBlock := &txLocs[txIdx]
// Coinbases don't have any inputs.
if !blockchain.IsCoinBase(tx) {
// Index the SPK's of each input's previous outpoint
// transaction.
for _, txIn := range tx.MsgTx().TxIn {
prevOutTx, err := a.lookupTransaction(
txIn.PreviousOutPoint.Hash,
blk,
parent)
inputOutPoint := prevOutTx.TxOut[txIn.PreviousOutPoint.Index]
toAppend, err := convertToAddrIndex(inputOutPoint.Version,
inputOutPoint.PkScript, parent.Height(), locInBlock,
stake.TxTypeRegular)
if err != nil {
adxrLog.Tracef("Error converting tx txin %v: %v",
txIn.PreviousOutPoint.Hash, err)
continue
}
addrIndex = append(addrIndex, toAppend...)
}
}
for _, txOut := range tx.MsgTx().TxOut {
toAppend, err := convertToAddrIndex(txOut.Version, txOut.PkScript,
parent.Height(), locInBlock, stake.TxTypeRegular)
if err != nil {
adxrLog.Tracef("Error converting tx txout %v: %v",
tx.MsgTx().TxSha(), err)
continue
}
addrIndex = append(addrIndex, toAppend...)
}
}
}
// Add stake transactions.
for stxIdx, stx := range blk.STransactions() {
// Tx's offset and length in the block.
locInBlock := &stxLocs[stxIdx]
txType := stake.DetermineTxType(stx)
// Index the SPK's of each input's previous outpoint
// transaction.
for i, txIn := range stx.MsgTx().TxIn {
// Stakebases don't have any inputs.
if txType == stake.TxTypeSSGen && i == 0 {
continue
}
// Lookup and fetch the referenced output's tx.
prevOutTx, err := a.lookupTransaction(
txIn.PreviousOutPoint.Hash,
blk,
parent)
inputOutPoint := prevOutTx.TxOut[txIn.PreviousOutPoint.Index]
toAppend, err := convertToAddrIndex(inputOutPoint.Version,
inputOutPoint.PkScript, blk.Height(), locInBlock,
txType)
if err != nil {
adxrLog.Tracef("Error converting stx txin %v: %v",
txIn.PreviousOutPoint.Hash, err)
continue
}
addrIndex = append(addrIndex, toAppend...)
}
for _, txOut := range stx.MsgTx().TxOut {
toAppend, err := convertToAddrIndex(txOut.Version, txOut.PkScript,
blk.Height(), locInBlock, txType)
if err != nil {
adxrLog.Tracef("Error converting stx txout %v: %v",
stx.MsgTx().TxSha(), err)
continue
}
addrIndex = append(addrIndex, toAppend...)
}
}
return addrIndex, nil
}
