// accountIsUsed checks if an account has ever been used by scanning the
// first acctSeekWidth many addresses for usage.
func (w *Wallet) accountIsUsed(ctx *discoveryContext, account uint32) (bool, error) {
for branch := uint32(0); branch < 2; branch++ {
for i := uint32(0); i < acctSeekWidth; i++ {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = ctx.deriveAddr(addrmgrNs, i, account, branch)
return err
})
// Skip erroneous keys, which happen rarely.
if e, ok := err.(waddrmgr.ManagerError); ok && e.Err == hdkeychain.ErrInvalidChild {
continue
}
if err != nil {
return false, err
}
exists, err := ctx.chainClient.ExistsAddress(addr)
if err != nil {
return false, err
}
if exists {
return true, nil
}
}
}
return false, nil
}
// RescanFromHeight is an alternative to Rescan that takes a block height
// instead of a hash. See Rescan for more details.
func (w *Wallet) RescanFromHeight(chainClient *chain.RPCClient, startHeight int32) <-chan error {
errc := make(chan error)
go func() (err error) {
defer func() {
select {
case errc <- err:
default:
if err != nil {
log.Errorf("Rescan failed: %v", err)
}
close(errc)
}
}()
var startHash chainhash.Hash
err = walletdb.View(w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
var err error
startHash, err = w.TxStore.GetMainChainBlockHashForHeight(
txmgrNs, startHeight)
return err
})
if err != nil {
return err
}
return w.rescan(chainClient, &startHash, startHeight, nil, nil)
}()
return errc
}
// Rescan starts a rescan of the wallet for all blocks on the main chain
// beginning at startHash.
//
// An error channel is returned for consumers of this API, but it is not
// required to be read. If the error can not be immediately written to the
// returned channel, the error will be logged and the channel will be closed.
func (w *Wallet) Rescan(chainClient *chain.RPCClient, startHash *chainhash.Hash) <-chan error {
errc := make(chan error)
go func() (err error) {
defer func() {
select {
case errc <- err:
default:
if err != nil {
log.Errorf("Rescan failed: %v", err)
}
close(errc)
}
}()
var startHeight int32
err = walletdb.View(w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
header, err := w.TxStore.GetSerializedBlockHeader(txmgrNs, startHash)
if err != nil {
return err
}
startHeight = wtxmgr.ExtractBlockHeaderHeight(header)
return nil
})
if err != nil {
return err
}
return w.rescan(chainClient, startHash, startHeight, nil, nil)
}()
return errc
}
// TicketHashesForVotingAddress returns the hashes of all tickets with voting
// rights delegated to votingAddr. This function does not return the hashes of
// pruned tickets.
func (w *Wallet) TicketHashesForVotingAddress(votingAddr dcrutil.Address) ([]chainhash.Hash, error) {
var ticketHashes []chainhash.Hash
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
stakemgrNs := tx.ReadBucket(wstakemgrNamespaceKey)
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
var err error
ticketHashes, err = w.StakeMgr.DumpSStxHashesForAddress(
stakemgrNs, votingAddr)
if err != nil {
return err
}
// Exclude the hash if the transaction is not saved too. No
// promises of hash order are given (and at time of writing,
// they are copies of iterators of a Go map in wstakemgr) so
// when one must be removed, replace it with the last and
// decrease the len.
for i := 0; i < len(ticketHashes); {
if w.TxStore.ExistsTx(txmgrNs, &ticketHashes[i]) {
i++
continue
}
ticketHashes[i] = ticketHashes[len(ticketHashes)-1]
ticketHashes = ticketHashes[:len(ticketHashes)-1]
}
return nil
})
return ticketHashes, err
}
// FetchP2SHMultiSigOutput fetches information regarding a wallet's P2SH
// multi-signature output.
func (w *Wallet) FetchP2SHMultiSigOutput(outPoint *wire.OutPoint) (*P2SHMultiSigOutput, error) {
var (
mso *wtxmgr.MultisigOut
redeemScript []byte
)
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
var err error
mso, err = w.TxStore.GetMultisigOutput(txmgrNs, outPoint)
if err != nil {
return err
}
redeemScript, err = w.TxStore.GetTxScript(txmgrNs, mso.ScriptHash[:])
if err != nil {
return err
}
// returns nil, nil when it successfully found no script. That error is
// only used to return early when the database is closed.
if redeemScript == nil {
return errors.New("script not found")
}
return nil
})
if err != nil {
return nil, err
}
p2shAddr, err := dcrutil.NewAddressScriptHashFromHash(
mso.ScriptHash[:], w.chainParams)
if err != nil {
return nil, err
}
multiSigOutput := P2SHMultiSigOutput{
OutPoint: *mso.OutPoint,
OutputAmount: mso.Amount,
ContainingBlock: BlockIdentity{
Hash: mso.BlockHash,
Height: int32(mso.BlockHeight),
},
P2SHAddress: p2shAddr,
RedeemScript: redeemScript,
M: mso.M,
N: mso.N,
Redeemer: nil,
}
if mso.Spent {
multiSigOutput.Redeemer = &OutputRedeemer{
TxHash: mso.SpentBy,
InputIndex: mso.SpentByIndex,
}
}
return &multiSigOutput, nil
}
// bisectLastAddrIndex is a helper function for search through addresses.
func (w *Wallet) bisectLastAddrIndex(hi, low int, account uint32, branch uint32) int {
chainClient, err := w.requireChainClient()
if err != nil {
return 0
}
// Logarithmically scan address indexes to find the last used
// address index. Each time the algorithm receives an end point,
// scans a chunk of addresses at the end point, and if no
// addresses are found, divides the address index by two and
// repeats until it finds the last used index.
offset := low
for i := hi - low - 1; i > 0; i /= 2 {
if i+offset+int(addrSeekWidth) < waddrmgr.MaxAddressesPerAccount {
start := i + offset
end := i + offset + int(addrSeekWidth)
exists, idx, err := w.scanAddressRange(account, branch, start, end,
chainClient)
// Skip erroneous keys, which happen rarely. Don't skip
// other errors.
if err == errDerivation {
continue
}
if err != nil {
log.Warnf("unexpected error encountered during bisection "+
"scan of account %v, branch %v: %s", account, branch,
err.Error())
return 0
}
if exists {
return idx
}
} else {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs,
uint32(i+offset), account, branch)
return err
})
// Skip erroneous keys, which happen rarely.
if err != nil {
continue
}
exists, err := chainClient.ExistsAddress(addr)
if err != nil {
return 0
}
if exists {
return i + offset
}
}
}
return 0
}
// AddressPoolIndex returns the next to use address index for the passed
// branch of the passed account.
func (w *Wallet) AddressPoolIndex(account uint32, branch uint32) (uint32, error) {
var index uint32
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
waddrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
index, err = w.addressPoolIndex(waddrmgrNs, account, branch)
return err
})
return index, err
}
// TxDetails calls wtxmgr.Store.TxDetails under a single database view transaction.
func (u unstableAPI) TxDetails(txHash *chainhash.Hash) (*wtxmgr.TxDetails, error) {
var details *wtxmgr.TxDetails
err := walletdb.View(u.w.db, func(dbtx walletdb.ReadTx) error {
txmgrNs := dbtx.ReadBucket(wtxmgrNamespaceKey)
var err error
details, err = u.w.TxStore.TxDetails(txmgrNs, txHash)
return err
})
return details, err
}
// FetchAllRedeemScripts returns all P2SH redeem scripts saved by the wallet.
func (w *Wallet) FetchAllRedeemScripts() ([][]byte, error) {
var redeemScripts [][]byte
err := walletdb.View(w.db, func(dbtx walletdb.ReadTx) error {
txmgrNs := dbtx.ReadBucket(wtxmgrNamespaceKey)
var err error
redeemScripts, err = w.TxStore.StoredTxScripts(txmgrNs)
return err
})
return redeemScripts, err
}
// UnspentMultisigCreditsForAddress calls
// wtxmgr.Store.UnspentMultisigCreditsForAddress under a single database view
// transaction.
func (u unstableAPI) UnspentMultisigCreditsForAddress(p2shAddr *dcrutil.AddressScriptHash) ([]*wtxmgr.MultisigCredit, error) {
var multisigCredits []*wtxmgr.MultisigCredit
err := walletdb.View(u.w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
var err error
multisigCredits, err = u.w.TxStore.UnspentMultisigCreditsForAddress(
txmgrNs, p2shAddr)
return err
})
return multisigCredits, err
}
// scanAddressRange scans backwards from end to start many addresses in the
// account branch, and return the first index that is found on the blockchain.
// If the address doesn't exist, false is returned as the first argument.
func (w *Wallet) scanAddressRange(account uint32, branch uint32, start int,
end int, chainClient *chain.RPCClient) (bool, int, error) {
var addresses []dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addresses, err = w.Manager.AddressesDerivedFromDbAcct(addrmgrNs,
uint32(start), uint32(end+1), account, branch)
if err != nil {
return errDerivation
}
return nil
})
if err != nil {
return false, 0, err
}
// Whether or not the addresses exist is encoded as a binary
// bitset.
exists, err := chainClient.ExistsAddresses(addresses)
if err != nil {
return false, 0, err
}
existsB, err := hex.DecodeString(exists)
if err != nil {
return false, 0, err
}
set := bitset.Bytes(existsB)
// Prevent a panic when an empty message is passed as a response.
if len(set) == 0 {
return false, 0, nil
}
// Scan backwards and return if we find an address exists.
idx := end
itr := len(addresses) - 1
for idx >= start {
// If the address exists in the mempool or blockchain according
// to the bit set returned, return this index.
if set.Get(itr) {
return true, idx, nil
}
itr--
idx--
}
return false, 0, nil
}
// bisectLastAddrIndex is a helper function for search through addresses.
func (w *Wallet) bisectLastAddrIndex(ctx *discoveryContext, hi, low uint32,
account uint32, branch uint32) (uint32, error) {
// Logarithmically scan address indexes to find the last used
// address index. Each time the algorithm receives an end point,
// scans a chunk of addresses at the end point, and if no
// addresses are found, divides the address index by two and
// repeats until it finds the last used index.
offset := low
for i := hi - low - 1; i > 0; i /= 2 {
if i+offset+addrSeekWidth < waddrmgr.MaxAddressesPerAccount {
start := i + offset
end := i + offset + addrSeekWidth
exists, idx, err := w.scanAddressRange(ctx, account, branch, start, end)
// Skip erroneous keys, which happen rarely. Don't skip
// other errors.
if e, ok := err.(waddrmgr.ManagerError); ok && e.Err == hdkeychain.ErrInvalidChild {
continue
}
if err != nil {
return 0, err
}
if exists {
return idx, nil
}
} else {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs,
i+offset, account, branch)
return err
})
// Skip erroneous keys, which happen rarely.
if err != nil {
continue
}
exists, err := ctx.chainClient.ExistsAddress(addr)
if err != nil {
return 0, err
}
if exists {
return i + offset, nil
}
}
}
return 0, nil
}
// VoteBitsForTicket returns the per-ticket vote bits, if any are saved, falling
// back to the wallet's default vote bits when missing.
func (w *Wallet) VoteBitsForTicket(ticketHash *chainhash.Hash) (stake.VoteBits, error) {
var voteBits stake.VoteBits
var ok bool
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
stakemgrNs := tx.ReadBucket(wstakemgrNamespaceKey)
var err error
ok, voteBits, err = w.StakeMgr.SStxVoteBits(stakemgrNs, ticketHash)
return err
})
if !ok {
voteBits = w.VoteBits
}
return voteBits, err
}
// StakePoolUserInfo returns the stake pool user information for a user
// identified by their P2SH voting address.
func (w *Wallet) StakePoolUserInfo(userAddress dcrutil.Address) (*wstakemgr.StakePoolUser, error) {
switch userAddress.(type) {
case *dcrutil.AddressPubKeyHash: // ok
case *dcrutil.AddressScriptHash: // ok
default:
return nil, errors.New("stake pool user address must be P2PKH or P2SH")
}
var user *wstakemgr.StakePoolUser
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
stakemgrNs := tx.ReadBucket(wstakemgrNamespaceKey)
var err error
user, err = w.StakeMgr.StakePoolUserInfo(stakemgrNs, userAddress)
return err
})
return user, err
}
// RescanProgressFromHeight rescans for relevant transactions in all blocks in
// the main chain starting at startHeight. Progress notifications and any
// errors are sent to the channel p. This function blocks until the rescan
// completes or ends in an error. p is closed before returning.
func (w *Wallet) RescanProgressFromHeight(chainClient *chain.RPCClient, startHeight int32, p chan<- RescanProgress, cancel <-chan struct{}) {
defer close(p)
var startHash chainhash.Hash
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
var err error
startHash, err = w.TxStore.GetMainChainBlockHashForHeight(
txmgrNs, startHeight)
return err
})
if err != nil {
p <- RescanProgress{Err: err}
return
}
err = w.rescan(chainClient, &startHash, startHeight, p, cancel)
if err != nil {
p <- RescanProgress{Err: err}
}
}
// accountIsUsed checks if an account has ever been used by scanning the
// first acctSeekWidth many addresses for usage.
func (w *Wallet) accountIsUsed(account uint32, chainClient *chain.RPCClient) bool {
// Search external branch then internal branch for a used
// address. We need to set the address function to use based
// on whether or not this is the initial sync. The function
// AddressDerivedFromCointype is able to see addresses that
// exists in accounts that have not yet been created, while
// AddressDerivedFromDbAcct can not.
addrFunc := w.Manager.AddressDerivedFromDbAcct
if w.initiallyUnlocked {
addrFunc = w.Manager.AddressDerivedFromCointype
}
for branch := uint32(0); branch < 2; branch++ {
for i := uint32(0); i < acctSeekWidth; i++ {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = addrFunc(addrmgrNs, i, account, branch)
return err
})
if err != nil {
// Skip erroneous keys, which happen rarely.
continue
}
exists, err := chainClient.ExistsAddress(addr)
if err != nil {
return false
}
if exists {
return true
}
}
}
return false
}
// RangeTransactions calls wtxmgr.Store.RangeTransactions under a single
// database view tranasction.
func (u unstableAPI) RangeTransactions(begin, end int32, f func([]wtxmgr.TxDetails) (bool, error)) error {
return walletdb.View(u.w.db, func(dbtx walletdb.ReadTx) error {
txmgrNs := dbtx.ReadBucket(wtxmgrNamespaceKey)
return u.w.TxStore.RangeTransactions(txmgrNs, begin, end, f)
})
}
// rescan synchronously scans over all blocks on the main chain starting at
// startHash and height up through the recorded main chain tip block. The
// progress channel, if non-nil, is sent non-error progress notifications with
// the heights the rescan has completed through, starting with the start height.
func (w *Wallet) rescan(chainClient *chain.RPCClient, startHash *chainhash.Hash, height int32,
p chan<- RescanProgress, cancel <-chan struct{}) error {
blockHashStorage := make([]chainhash.Hash, maxBlocksPerRescan)
rescanFrom := *startHash
inclusive := true
for {
select {
case <-cancel:
return nil
default:
}
var rescanBlocks []chainhash.Hash
err := walletdb.View(w.db, func(dbtx walletdb.ReadTx) error {
txmgrNs := dbtx.ReadBucket(wtxmgrNamespaceKey)
var err error
rescanBlocks, err = w.TxStore.GetMainChainBlockHashes(txmgrNs,
&rescanFrom, inclusive, blockHashStorage)
return err
})
if err != nil {
return err
}
if len(rescanBlocks) == 0 {
return nil
}
scanningThrough := height + int32(len(rescanBlocks)) - 1
log.Infof("Rescanning blocks %v-%v...", height,
scanningThrough)
rescanResults, err := chainClient.Rescan(rescanBlocks)
if err != nil {
return err
}
var rawBlockHeader wtxmgr.RawBlockHeader
err = walletdb.Update(w.db, func(dbtx walletdb.ReadWriteTx) error {
txmgrNs := dbtx.ReadWriteBucket(wtxmgrNamespaceKey)
for _, r := range rescanResults.DiscoveredData {
blockHash, err := chainhash.NewHashFromStr(r.Hash)
if err != nil {
return err
}
blockMeta, err := w.TxStore.GetBlockMetaForHash(txmgrNs, blockHash)
if err != nil {
return err
}
serHeader, err := w.TxStore.GetSerializedBlockHeader(txmgrNs,
blockHash)
if err != nil {
return err
}
err = copyHeaderSliceToArray(&rawBlockHeader, serHeader)
if err != nil {
return err
}
for _, hexTx := range r.Transactions {
serTx, err := hex.DecodeString(hexTx)
if err != nil {
return err
}
err = w.processTransaction(dbtx, serTx, &rawBlockHeader,
&blockMeta)
if err != nil {
return err
}
}
}
return nil
})
if err != nil {
return err
}
if p != nil {
p <- RescanProgress{ScannedThrough: scanningThrough}
}
rescanFrom = rescanBlocks[len(rescanBlocks)-1]
height += int32(len(rescanBlocks))
inclusive = false
}
}
// UnspentOutputs fetches all unspent outputs from the wallet that match rules
// described in the passed policy.
func (w *Wallet) UnspentOutputs(policy OutputSelectionPolicy) ([]*TransactionOutput, error) {
var outputResults []*TransactionOutput
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
_, tipHeight := w.TxStore.MainChainTip(txmgrNs)
// TODO: actually stream outputs from the db instead of fetching
// all of them at once.
outputs, err := w.TxStore.UnspentOutputs(txmgrNs)
if err != nil {
return err
}
for _, output := range outputs {
// Ignore outputs that haven't reached the required
// number of confirmations.
if !policy.meetsRequiredConfs(output.Height, tipHeight) {
continue
}
// Ignore outputs that are not controlled by the account.
_, addrs, _, err := txscript.ExtractPkScriptAddrs(
txscript.DefaultScriptVersion, output.PkScript,
w.chainParams)
if err != nil || len(addrs) == 0 {
// Cannot determine which account this belongs
// to without a valid address. TODO: Fix this
// by saving outputs per account, or accounts
// per output.
continue
}
outputAcct, err := w.Manager.AddrAccount(addrmgrNs, addrs[0])
if err != nil {
return err
}
if outputAcct != policy.Account {
continue
}
// Stakebase isn't exposed by wtxmgr so those will be
// OutputKindNormal for now.
outputSource := OutputKindNormal
if output.FromCoinBase {
outputSource = OutputKindCoinbase
}
result := &TransactionOutput{
OutPoint: output.OutPoint,
Output: wire.TxOut{
Value: int64(output.Amount),
// TODO: version is bogus but there is
// only version 0 at time of writing.
Version: txscript.DefaultScriptVersion,
PkScript: output.PkScript,
},
OutputKind: outputSource,
ContainingBlock: BlockIdentity(output.Block),
ReceiveTime: output.Received,
}
outputResults = append(outputResults, result)
}
return nil
})
return outputResults, err
}
// scanAddressIndex identifies the last used address in an HD keychain of public
// keys. It returns the index of the last used key, along with the address of
// this key.
func (w *Wallet) scanAddressIndex(ctx *discoveryContext, start, end uint32,
account uint32, branch uint32) (uint32, dcrutil.Address, error) {
// Find the last used address. Scan from it to the end in case there was a
// gap from that position, which is possible. Then, return the address
// in that position.
lastUsed, err := w.findAddrEnd(ctx, start, end, account, branch)
if err != nil {
return 0, nil, err
}
// If debug is on, do an exhaustive check and a graphical printout
// of what the used addresses currently look like.
if log.Level() <= btclog.DebugLvl {
dbgStr, err := debugAccountAddrGapsString(ctx.chainClient,
lastUsed+debugAddrScanLength, account, branch, w)
if err != nil {
log.Debugf("Failed to debug address gaps for account %v, "+
"branch %v: %v", account, branch, err)
} else {
log.Debugf("%v", dbgStr)
}
}
// If there was a last used index, do an exhaustive final scan that
// reexamines the last used addresses and ensures that the final index
// we have found is correct.
if lastUsed != 0 {
start := lastUsed
end := lastUsed + uint32(w.addrIdxScanLen)
exists, idx, err := w.scanAddressRange(ctx, account, branch, start, end)
if err != nil {
return 0, nil, err
}
if exists {
lastUsed = idx
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs,
lastUsed, account, branch)
return err
})
if err != nil {
return 0, nil, err
}
return lastUsed, addr, nil
}
}
// In the case that 0 was returned as the last used address,
// make sure the the 0th address was not used. If it was,
// return this address to let the caller know that this
// 0th address was used.
if lastUsed == 0 {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs, 0,
account, branch)
return err
})
// Skip erroneous keys.
if err != nil {
return 0, nil, err
}
exists, err := ctx.chainClient.ExistsAddress(addr)
if err != nil {
return 0, nil, fmt.Errorf("failed to access chain server: %v",
err)
}
if exists {
return 0, addr, nil
}
}
// We can't find any used addresses for this account's
// branch.
return 0, nil, nil
}
// debugAccountAddrGapsString is a debug function that prints a graphical outlook
// of address usage to a string, from the perspective of the daemon.
func debugAccountAddrGapsString(chainClient *chain.RPCClient, scanBackFrom uint32,
account uint32, branch uint32, w *Wallet) (string, error) {
var buf bytes.Buffer
str := fmt.Sprintf("Begin debug address scan scanning backwards from "+
"idx %v, account %v, branch %v\n", scanBackFrom, account, branch)
buf.WriteString(str)
var firstUsedIndex uint32
for i := scanBackFrom; i > 0; i-- {
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs,
i, account, branch)
return err
})
// Skip erroneous keys.
if err != nil {
continue
}
exists, err := chainClient.ExistsAddress(addr)
if err != nil {
return "", fmt.Errorf("failed to access chain server: %v",
err)
}
if exists {
firstUsedIndex = i
break
}
}
str = fmt.Sprintf("Last used index found: %v\n", firstUsedIndex)
buf.WriteString(str)
var batchSize uint32 = 50
batches := (firstUsedIndex / batchSize) + 1
var lastBatchSize uint32
if firstUsedIndex%batchSize != 0 {
lastBatchSize = firstUsedIndex - ((batches - 1) * batchSize)
}
for i := uint32(0); i < batches; i++ {
str = fmt.Sprintf("%8v", i*batchSize)
buf.WriteString(str)
start := i * batchSize
end := (i + 1) * batchSize
if i == batches-1 {
// Nothing to do because last batch empty.
if lastBatchSize == 0 {
break
}
end = (i*batchSize + lastBatchSize) + 1
}
for j := start; j < end; j++ {
if j%10 == 0 {
buf.WriteString(" ")
}
char := "_"
var addr dcrutil.Address
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
addrmgrNs := tx.ReadBucket(waddrmgrNamespaceKey)
var err error
addr, err = w.Manager.AddressDerivedFromDbAcct(addrmgrNs,
j, account, branch)
return err
})
if err != nil {
char = "X"
}
exists, err := chainClient.ExistsAddress(addr)
if err != nil {
return "", fmt.Errorf("failed to access chain server: %v",
err)
}
if exists {
char = "#"
}
buf.WriteString(char)
}
buf.WriteString("\n")
}
return buf.String(), nil
}
// LiveTicketHashes returns the hashes of live tickets that have been purchased
// by the wallet.
func (w *Wallet) LiveTicketHashes(rpcClient *chain.RPCClient, includeImmature bool) ([]chainhash.Hash, error) {
// This was mostly copied from an older version of the legacy RPC server
// implementation, hence the overall weirdness, inefficiencies, and the
// direct dependency on the consensus server RPC client.
var blk waddrmgr.BlockStamp
var ticketHashes []chainhash.Hash
var stakeMgrTickets []chainhash.Hash
err := walletdb.View(w.db, func(tx walletdb.ReadTx) error {
txmgrNs := tx.ReadBucket(wtxmgrNamespaceKey)
blk = w.Manager.SyncedTo()
// UnspentTickets collects all the tickets that pay out to a
// public key hash for a public key owned by this wallet.
var err error
ticketHashes, err = w.TxStore.UnspentTickets(txmgrNs, blk.Height,
includeImmature)
if err != nil {
return err
}
// Access the stake manager and see if there are any extra tickets
// there. Likely they were either pruned because they failed to get
// into the blockchain or they are P2SH for some script we own.
stakeMgrTickets, err = w.StakeMgr.DumpSStxHashes()
return err
})
if err != nil {
return nil, err
}
for _, h := range stakeMgrTickets {
if sliceContainsHash(ticketHashes, h) {
continue
}
// Get the raw transaction information from daemon and add
// any relevant tickets. The ticket output is always the
// zeroeth output.
spent, err := rpcClient.GetTxOut(&h, 0, true)
if err != nil {
continue
}
// This returns nil if the output is spent.
if spent == nil {
continue
}
ticketTx, err := rpcClient.GetRawTransactionVerbose(&h)
if err != nil {
continue
}
txHeight := ticketTx.BlockHeight
unconfirmed := (txHeight == 0)
immature := (blk.Height-int32(txHeight) <
int32(w.ChainParams().TicketMaturity))
if includeImmature {
ticketHashes = append(ticketHashes, h)
} else {
if !(unconfirmed || immature) {
ticketHashes = append(ticketHashes, h)
}
}
}
return ticketHashes, nil
}
// initialize initializes an address pool for the passed account and branch
// to the address index given. It will automatically load a buffer of addresses
// from the address manager to use for upcoming calls.
func (a *addressPool) initialize(account uint32, branch uint32, index uint32, w *Wallet) error {
a.mutex.Lock()
defer a.mutex.Unlock()
// Do not reinitialize an address pool that was already started.
// This can happen if the RPC client dies due to a disconnect
// from the daemon.
if a.started {
return nil
}
// 0 and 1 refer to the external and internal branches of the wallet.
// Other branches are so far unused.
if branch > waddrmgr.InternalBranch {
return fmt.Errorf("unknown branch %v given when attempting to "+
"initialize address pool for account %v", branch, account)
}
// Access the manager and get the synced to index, then insert all
// the unused addresses into the address pool.
var mgrIdx uint32
err := walletdb.View(w.db, func(dbtx walletdb.ReadTx) error {
waddrmgrNs := dbtx.ReadBucket(waddrmgrNamespaceKey)
lastAddrFunc := w.Manager.LastExternalAddress
if branch == waddrmgr.InternalBranch {
lastAddrFunc = w.Manager.LastInternalAddress
}
var err error
_, mgrIdx, err = lastAddrFunc(waddrmgrNs, account)
if err != nil {
return fmt.Errorf("failed to retrieve the last used addr index "+
"from the address manager for branch %v, acct %v: %s", branch,
account, err.Error())
}
if mgrIdx < index {
return fmt.Errorf("manager is out of sync with the passed index "+
"(index %v, mgr index %v)", index, mgrIdx)
}
if mgrIdx == index {
a.addresses = make([]string, 0)
} else {
fetchNum := mgrIdx - index + 1
a.addresses = make([]string, fetchNum)
for i := uint32(0); i < fetchNum; i++ {
addr, err := w.Manager.AddressDerivedFromDbAcct(waddrmgrNs,
index+i, account, branch)
if err != nil {
return fmt.Errorf("failed to get the address at index %v "+
"for account %v, branch %v: %s", index+i, account, branch,
err.Error())
}
a.addresses[i] = addr.EncodeAddress()
}
}
return nil
})
if err != nil {
return fmt.Errorf("failed to initialize address pool: %v", err)
}
a.wallet = w
a.account = account
a.branch = branch
a.index = index
log.Debugf("Address pool for account %v initialized to next "+
"address index %v on branch %v", account, a.index, branch)
log.Debugf("The address manager buffered address space is %v "+
"many addresses (manager index: %v) for account %v, branch %v",
len(a.addresses), mgrIdx, account, branch)
a.cursor = 0
a.started = true
return nil
}