You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
841 lines
25 KiB
841 lines
25 KiB
package state
|
|
|
|
import (
|
|
"bytes"
|
|
"errors"
|
|
|
|
"github.com/tendermint/tendermint/account"
|
|
. "github.com/tendermint/tendermint/common"
|
|
"github.com/tendermint/tendermint/events"
|
|
ptypes "github.com/tendermint/tendermint/permission/types" // for GlobalPermissionAddress ...
|
|
"github.com/tendermint/tendermint/types"
|
|
"github.com/tendermint/tendermint/vm"
|
|
)
|
|
|
|
// NOTE: If an error occurs during block execution, state will be left
|
|
// at an invalid state. Copy the state before calling ExecBlock!
|
|
func ExecBlock(s *State, block *types.Block, blockPartsHeader types.PartSetHeader) error {
|
|
err := execBlock(s, block, blockPartsHeader)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
// State.Hash should match block.StateHash
|
|
stateHash := s.Hash()
|
|
if !bytes.Equal(stateHash, block.StateHash) {
|
|
return errors.New(Fmt("Invalid state hash. Expected %X, got %X",
|
|
stateHash, block.StateHash))
|
|
}
|
|
return nil
|
|
}
|
|
|
|
// executes transactions of a block, does not check block.StateHash
|
|
// NOTE: If an error occurs during block execution, state will be left
|
|
// at an invalid state. Copy the state before calling execBlock!
|
|
func execBlock(s *State, block *types.Block, blockPartsHeader types.PartSetHeader) error {
|
|
// Basic block validation.
|
|
err := block.ValidateBasic(s.ChainID, s.LastBlockHeight, s.LastBlockHash, s.LastBlockParts, s.LastBlockTime)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// Validate block LastValidation.
|
|
if block.Height == 1 {
|
|
if len(block.LastValidation.Precommits) != 0 {
|
|
return errors.New("Block at height 1 (first block) should have no LastValidation precommits")
|
|
}
|
|
} else {
|
|
if len(block.LastValidation.Precommits) != s.LastBondedValidators.Size() {
|
|
return errors.New(Fmt("Invalid block validation size. Expected %v, got %v",
|
|
s.LastBondedValidators.Size(), len(block.LastValidation.Precommits)))
|
|
}
|
|
err := s.LastBondedValidators.VerifyValidation(
|
|
s.ChainID, s.LastBlockHash, s.LastBlockParts, block.Height-1, block.LastValidation)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
}
|
|
|
|
// Update Validator.LastCommitHeight as necessary.
|
|
// If we panic in here, something has gone horribly wrong
|
|
for i, precommit := range block.LastValidation.Precommits {
|
|
if precommit == nil {
|
|
continue
|
|
}
|
|
_, val := s.LastBondedValidators.GetByIndex(i)
|
|
if val == nil {
|
|
panic(Fmt("Failed to fetch validator at index %v", i))
|
|
}
|
|
if _, val_ := s.BondedValidators.GetByAddress(val.Address); val_ != nil {
|
|
val_.LastCommitHeight = block.Height - 1
|
|
updated := s.BondedValidators.Update(val_)
|
|
if !updated {
|
|
panic("Failed to update bonded validator LastCommitHeight")
|
|
}
|
|
} else if _, val_ := s.UnbondingValidators.GetByAddress(val.Address); val_ != nil {
|
|
val_.LastCommitHeight = block.Height - 1
|
|
updated := s.UnbondingValidators.Update(val_)
|
|
if !updated {
|
|
panic("Failed to update unbonding validator LastCommitHeight")
|
|
}
|
|
} else {
|
|
panic("Could not find validator")
|
|
}
|
|
}
|
|
|
|
// Remember LastBondedValidators
|
|
s.LastBondedValidators = s.BondedValidators.Copy()
|
|
|
|
// Create BlockCache to cache changes to state.
|
|
blockCache := NewBlockCache(s)
|
|
|
|
// Execute each tx
|
|
for _, tx := range block.Data.Txs {
|
|
err := ExecTx(blockCache, tx, true, s.evc)
|
|
if err != nil {
|
|
return InvalidTxError{tx, err}
|
|
}
|
|
}
|
|
|
|
// Now sync the BlockCache to the backend.
|
|
blockCache.Sync()
|
|
|
|
// If any unbonding periods are over,
|
|
// reward account with bonded coins.
|
|
toRelease := []*Validator{}
|
|
s.UnbondingValidators.Iterate(func(index int, val *Validator) bool {
|
|
if val.UnbondHeight+unbondingPeriodBlocks < block.Height {
|
|
toRelease = append(toRelease, val)
|
|
}
|
|
return false
|
|
})
|
|
for _, val := range toRelease {
|
|
s.releaseValidator(val)
|
|
}
|
|
|
|
// If any validators haven't signed in a while,
|
|
// unbond them, they have timed out.
|
|
toTimeout := []*Validator{}
|
|
s.BondedValidators.Iterate(func(index int, val *Validator) bool {
|
|
lastActivityHeight := MaxInt(val.BondHeight, val.LastCommitHeight)
|
|
if lastActivityHeight+validatorTimeoutBlocks < block.Height {
|
|
log.Info("Validator timeout", "validator", val, "height", block.Height)
|
|
toTimeout = append(toTimeout, val)
|
|
}
|
|
return false
|
|
})
|
|
for _, val := range toTimeout {
|
|
s.unbondValidator(val)
|
|
}
|
|
|
|
// Increment validator AccumPowers
|
|
s.BondedValidators.IncrementAccum(1)
|
|
s.LastBlockHeight = block.Height
|
|
s.LastBlockHash = block.Hash()
|
|
s.LastBlockParts = blockPartsHeader
|
|
s.LastBlockTime = block.Time
|
|
return nil
|
|
}
|
|
|
|
// The accounts from the TxInputs must either already have
|
|
// account.PubKey.(type) != nil, (it must be known),
|
|
// or it must be specified in the TxInput. If redeclared,
|
|
// the TxInput is modified and input.PubKey set to nil.
|
|
func getInputs(state AccountGetter, ins []*types.TxInput) (map[string]*account.Account, error) {
|
|
accounts := map[string]*account.Account{}
|
|
for _, in := range ins {
|
|
// Account shouldn't be duplicated
|
|
if _, ok := accounts[string(in.Address)]; ok {
|
|
return nil, types.ErrTxDuplicateAddress
|
|
}
|
|
acc := state.GetAccount(in.Address)
|
|
if acc == nil {
|
|
return nil, types.ErrTxInvalidAddress
|
|
}
|
|
// PubKey should be present in either "account" or "in"
|
|
if err := checkInputPubKey(acc, in); err != nil {
|
|
return nil, err
|
|
}
|
|
accounts[string(in.Address)] = acc
|
|
}
|
|
return accounts, nil
|
|
}
|
|
|
|
func getOrMakeOutputs(state AccountGetter, accounts map[string]*account.Account, outs []*types.TxOutput) (map[string]*account.Account, error) {
|
|
if accounts == nil {
|
|
accounts = make(map[string]*account.Account)
|
|
}
|
|
|
|
for _, out := range outs {
|
|
// Account shouldn't be duplicated
|
|
if _, ok := accounts[string(out.Address)]; ok {
|
|
return nil, types.ErrTxDuplicateAddress
|
|
}
|
|
acc := state.GetAccount(out.Address)
|
|
// output account may be nil (new)
|
|
if acc == nil {
|
|
acc = &account.Account{
|
|
Address: out.Address,
|
|
PubKey: nil,
|
|
Sequence: 0,
|
|
Balance: 0,
|
|
Permissions: ptypes.NewAccountPermissions(),
|
|
}
|
|
}
|
|
accounts[string(out.Address)] = acc
|
|
}
|
|
return accounts, nil
|
|
}
|
|
|
|
func checkInputPubKey(acc *account.Account, in *types.TxInput) error {
|
|
if acc.PubKey == nil {
|
|
if in.PubKey == nil {
|
|
return types.ErrTxUnknownPubKey
|
|
}
|
|
if !bytes.Equal(in.PubKey.Address(), acc.Address) {
|
|
return types.ErrTxInvalidPubKey
|
|
}
|
|
acc.PubKey = in.PubKey
|
|
} else {
|
|
in.PubKey = nil
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func validateInputs(accounts map[string]*account.Account, signBytes []byte, ins []*types.TxInput) (total int64, err error) {
|
|
for _, in := range ins {
|
|
acc := accounts[string(in.Address)]
|
|
// SANITY CHECK
|
|
if acc == nil {
|
|
panic("validateInputs() expects account in accounts")
|
|
}
|
|
// SANITY CHECK END
|
|
err = validateInput(acc, signBytes, in)
|
|
if err != nil {
|
|
return
|
|
}
|
|
// Good. Add amount to total
|
|
total += in.Amount
|
|
}
|
|
return total, nil
|
|
}
|
|
|
|
func validateInput(acc *account.Account, signBytes []byte, in *types.TxInput) (err error) {
|
|
// Check TxInput basic
|
|
if err := in.ValidateBasic(); err != nil {
|
|
return err
|
|
}
|
|
// Check signatures
|
|
if !acc.PubKey.VerifyBytes(signBytes, in.Signature) {
|
|
return types.ErrTxInvalidSignature
|
|
}
|
|
// Check sequences
|
|
if acc.Sequence+1 != in.Sequence {
|
|
return types.ErrTxInvalidSequence{
|
|
Got: in.Sequence,
|
|
Expected: acc.Sequence + 1,
|
|
}
|
|
}
|
|
// Check amount
|
|
if acc.Balance < in.Amount {
|
|
return types.ErrTxInsufficientFunds
|
|
}
|
|
return nil
|
|
}
|
|
|
|
func validateOutputs(outs []*types.TxOutput) (total int64, err error) {
|
|
for _, out := range outs {
|
|
// Check TxOutput basic
|
|
if err := out.ValidateBasic(); err != nil {
|
|
return 0, err
|
|
}
|
|
// Good. Add amount to total
|
|
total += out.Amount
|
|
}
|
|
return total, nil
|
|
}
|
|
|
|
func adjustByInputs(accounts map[string]*account.Account, ins []*types.TxInput) {
|
|
for _, in := range ins {
|
|
acc := accounts[string(in.Address)]
|
|
// SANITY CHECK
|
|
if acc == nil {
|
|
panic("adjustByInputs() expects account in accounts")
|
|
}
|
|
if acc.Balance < in.Amount {
|
|
panic("adjustByInputs() expects sufficient funds")
|
|
}
|
|
// SANITY CHECK END
|
|
acc.Balance -= in.Amount
|
|
acc.Sequence += 1
|
|
}
|
|
}
|
|
|
|
func adjustByOutputs(accounts map[string]*account.Account, outs []*types.TxOutput) {
|
|
for _, out := range outs {
|
|
acc := accounts[string(out.Address)]
|
|
// SANITY CHECK
|
|
if acc == nil {
|
|
panic("adjustByOutputs() expects account in accounts")
|
|
}
|
|
// SANITY CHECK END
|
|
acc.Balance += out.Amount
|
|
}
|
|
}
|
|
|
|
// If the tx is invalid, an error will be returned.
|
|
// Unlike ExecBlock(), state will not be altered.
|
|
func ExecTx(blockCache *BlockCache, tx_ types.Tx, runCall bool, evc events.Fireable) error {
|
|
|
|
defer func() {
|
|
if r := recover(); r != nil {
|
|
err := errors.New(Fmt("Recovered from panic in ExecTx", "err", r, "tx", tx_))
|
|
log.Error(err.Error())
|
|
// TODO return error
|
|
}
|
|
}()
|
|
|
|
// TODO: do something with fees
|
|
fees := int64(0)
|
|
_s := blockCache.State() // hack to access validators and block height
|
|
|
|
// Exec tx
|
|
switch tx := tx_.(type) {
|
|
case *types.SendTx:
|
|
accounts, err := getInputs(blockCache, tx.Inputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
// ensure all inputs have send permissions
|
|
if !hasSendPermission(blockCache, accounts) {
|
|
return fmt.Errorf("At least one input lacks permission for SendTx")
|
|
}
|
|
|
|
// add outputs to accounts map
|
|
accounts, err = getOrMakeOutputs(blockCache, accounts, tx.Outputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
inTotal, err := validateInputs(accounts, signBytes, tx.Inputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
outTotal, err := validateOutputs(tx.Outputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if outTotal > inTotal {
|
|
return types.ErrTxInsufficientFunds
|
|
}
|
|
fee := inTotal - outTotal
|
|
fees += fee
|
|
|
|
// Good! Adjust accounts
|
|
adjustByInputs(accounts, tx.Inputs)
|
|
adjustByOutputs(accounts, tx.Outputs)
|
|
for _, acc := range accounts {
|
|
blockCache.UpdateAccount(acc)
|
|
}
|
|
|
|
// if the evc is nil, nothing will happen
|
|
if evc != nil {
|
|
for _, i := range tx.Inputs {
|
|
evc.FireEvent(types.EventStringAccInput(i.Address), tx)
|
|
}
|
|
|
|
for _, o := range tx.Outputs {
|
|
evc.FireEvent(types.EventStringAccOutput(o.Address), tx)
|
|
}
|
|
}
|
|
return nil
|
|
|
|
case *types.CallTx:
|
|
var inAcc, outAcc *account.Account
|
|
var isDoug bool // is this a call to the gendoug?
|
|
|
|
// Validate input
|
|
inAcc = blockCache.GetAccount(tx.Input.Address)
|
|
if inAcc == nil {
|
|
log.Debug(Fmt("Can't find in account %X", tx.Input.Address))
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
|
|
createAccount := len(tx.Address) == 0
|
|
if createAccount {
|
|
if !hasCreatePermission(blockCache, inAcc) {
|
|
return fmt.Errorf("Account %X does not have Create permission", tx.Input.Address)
|
|
}
|
|
} else {
|
|
if !hasCallPermission(blockCache, inAcc) {
|
|
return fmt.Errorf("Account %X does not have Call permission", tx.Input.Address)
|
|
}
|
|
}
|
|
|
|
// pubKey should be present in either "inAcc" or "tx.Input"
|
|
if err := checkInputPubKey(inAcc, tx.Input); err != nil {
|
|
log.Debug(Fmt("Can't find pubkey for %X", tx.Input.Address))
|
|
return err
|
|
}
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
err := validateInput(inAcc, signBytes, tx.Input)
|
|
if err != nil {
|
|
log.Debug(Fmt("validateInput failed on %X: %v", tx.Input.Address, err))
|
|
return err
|
|
}
|
|
if tx.Input.Amount < tx.Fee {
|
|
log.Debug(Fmt("Sender did not send enough to cover the fee %X", tx.Input.Address))
|
|
return types.ErrTxInsufficientFunds
|
|
}
|
|
|
|
if !createAccount {
|
|
// Validate output
|
|
if len(tx.Address) != 20 {
|
|
log.Debug(Fmt("Destination address is not 20 bytes %X", tx.Address))
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
// this may be nil if we are still in mempool and contract was created in same block as this tx
|
|
// but that's fine, because the account will be created properly when the create tx runs in the block
|
|
// and then this won't return nil. otherwise, we take their fee
|
|
outAcc = blockCache.GetAccount(tx.Address)
|
|
}
|
|
|
|
log.Debug(Fmt("Out account: %v", outAcc))
|
|
|
|
// Good!
|
|
value := tx.Input.Amount - tx.Fee
|
|
inAcc.Sequence += 1
|
|
|
|
if runCall {
|
|
|
|
var (
|
|
gas int64 = tx.GasLimit
|
|
err error = nil
|
|
caller *vm.Account = toVMAccount(inAcc)
|
|
callee *vm.Account = nil
|
|
code []byte = nil
|
|
txCache = NewTxCache(blockCache)
|
|
params = vm.Params{
|
|
BlockHeight: int64(_s.LastBlockHeight),
|
|
BlockHash: LeftPadWord256(_s.LastBlockHash),
|
|
BlockTime: _s.LastBlockTime.Unix(),
|
|
GasLimit: 10000000,
|
|
}
|
|
)
|
|
|
|
// Maybe create a new callee account if
|
|
// this transaction is creating a new contract.
|
|
if !createAccount {
|
|
if outAcc == nil || len(outAcc.Code) == 0 {
|
|
// if you call an account that doesn't exist
|
|
// or an account with no code then we take fees (sorry pal)
|
|
// NOTE: it's fine to create a contract and call it within one
|
|
// block (nonce will prevent re-ordering of those txs)
|
|
// but to create with one account and call with another
|
|
// you have to wait a block to avoid a re-ordering attack
|
|
// that will take your fees
|
|
inAcc.Balance -= tx.Fee
|
|
blockCache.UpdateAccount(inAcc)
|
|
if outAcc == nil {
|
|
log.Debug(Fmt("Cannot find destination address %X. Deducting fee from caller", tx.Address))
|
|
} else {
|
|
log.Debug(Fmt("Attempting to call an account (%X) with no code. Deducting fee from caller", tx.Address))
|
|
}
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
callee = toVMAccount(outAcc)
|
|
code = callee.Code
|
|
log.Debug(Fmt("Calling contract %X with code %X", callee.Address, callee.Code))
|
|
} else {
|
|
callee = txCache.CreateAccount(caller)
|
|
log.Debug(Fmt("Created new account %X", callee.Address))
|
|
code = tx.Data
|
|
}
|
|
log.Debug(Fmt("Code for this contract: %X", code))
|
|
|
|
txCache.UpdateAccount(caller) // because we adjusted by input above, and bumped nonce maybe.
|
|
txCache.UpdateAccount(callee) // because we adjusted by input above.
|
|
vmach := vm.NewVM(txCache, params, caller.Address, account.HashSignBytes(_s.ChainID, tx))
|
|
vmach.SetFireable(evc)
|
|
vmach.EnablePermissions()
|
|
// NOTE: Call() transfers the value from caller to callee iff call succeeds.
|
|
|
|
if isDoug {
|
|
// enables the snative contracts
|
|
vmach.EnableDoug() // setupDoug(vmach, txCache, _s)
|
|
}
|
|
|
|
ret, err := vmach.Call(caller, callee, code, tx.Data, value, &gas)
|
|
exception := ""
|
|
if err != nil {
|
|
exception = err.Error()
|
|
// Failure. Charge the gas fee. The 'value' was otherwise not transferred.
|
|
log.Debug(Fmt("Error on execution: %v", err))
|
|
inAcc.Balance -= tx.Fee
|
|
blockCache.UpdateAccount(inAcc)
|
|
// Throw away 'txCache' which holds incomplete updates (don't sync it).
|
|
} else {
|
|
log.Debug("Successful execution")
|
|
// Success
|
|
if createAccount {
|
|
callee.Code = ret
|
|
}
|
|
|
|
txCache.Sync()
|
|
}
|
|
// Create a receipt from the ret and whether errored.
|
|
log.Info("VM call complete", "caller", caller, "callee", callee, "return", ret, "err", err)
|
|
|
|
// Fire Events for sender and receiver
|
|
// a separate event will be fired from vm for each additional call
|
|
if evc != nil {
|
|
evc.FireEvent(types.EventStringAccInput(tx.Input.Address), types.EventMsgCallTx{tx, ret, exception})
|
|
evc.FireEvent(types.EventStringAccOutput(tx.Address), types.EventMsgCallTx{tx, ret, exception})
|
|
}
|
|
} else {
|
|
// The mempool does not call txs until
|
|
// the proposer determines the order of txs.
|
|
// So mempool will skip the actual .Call(),
|
|
// and only deduct from the caller's balance.
|
|
inAcc.Balance -= value
|
|
if createAccount {
|
|
inAcc.Sequence += 1
|
|
}
|
|
blockCache.UpdateAccount(inAcc)
|
|
}
|
|
|
|
return nil
|
|
|
|
case *types.NameTx:
|
|
var inAcc *account.Account
|
|
|
|
// Validate input
|
|
inAcc = blockCache.GetAccount(tx.Input.Address)
|
|
if inAcc == nil {
|
|
log.Debug(Fmt("Can't find in account %X", tx.Input.Address))
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
// pubKey should be present in either "inAcc" or "tx.Input"
|
|
if err := checkInputPubKey(inAcc, tx.Input); err != nil {
|
|
log.Debug(Fmt("Can't find pubkey for %X", tx.Input.Address))
|
|
return err
|
|
}
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
err := validateInput(inAcc, signBytes, tx.Input)
|
|
if err != nil {
|
|
log.Debug(Fmt("validateInput failed on %X: %v", tx.Input.Address, err))
|
|
return err
|
|
}
|
|
// fee is in addition to the amount which is used to determine the TTL
|
|
if tx.Input.Amount < tx.Fee {
|
|
log.Debug(Fmt("Sender did not send enough to cover the fee %X", tx.Input.Address))
|
|
return types.ErrTxInsufficientFunds
|
|
}
|
|
|
|
// validate the input strings
|
|
if err := tx.ValidateStrings(); err != nil {
|
|
log.Debug(err.Error())
|
|
return types.ErrTxInvalidString
|
|
}
|
|
|
|
value := tx.Input.Amount - tx.Fee
|
|
|
|
// let's say cost of a name for one block is len(data) + 32
|
|
costPerBlock := types.NameCostPerBlock * types.NameCostPerByte * tx.BaseEntryCost()
|
|
expiresIn := int(value / costPerBlock)
|
|
lastBlockHeight := _s.LastBlockHeight
|
|
|
|
log.Debug("New NameTx", "value", value, "costPerBlock", costPerBlock, "expiresIn", expiresIn, "lastBlock", lastBlockHeight)
|
|
|
|
// check if the name exists
|
|
entry := blockCache.GetNameRegEntry(tx.Name)
|
|
|
|
if entry != nil {
|
|
var expired bool
|
|
// if the entry already exists, and hasn't expired, we must be owner
|
|
if entry.Expires > lastBlockHeight {
|
|
// ensure we are owner
|
|
if bytes.Compare(entry.Owner, tx.Input.Address) != 0 {
|
|
log.Debug(Fmt("Sender %X is trying to update a name (%s) for which he is not owner", tx.Input.Address, tx.Name))
|
|
return types.ErrIncorrectOwner
|
|
}
|
|
} else {
|
|
expired = true
|
|
}
|
|
|
|
// no value and empty data means delete the entry
|
|
if value == 0 && len(tx.Data) == 0 {
|
|
// maybe we reward you for telling us we can delete this crap
|
|
// (owners if not expired, anyone if expired)
|
|
log.Debug("Removing namereg entry", "name", entry.Name)
|
|
blockCache.RemoveNameRegEntry(entry.Name)
|
|
} else {
|
|
// update the entry by bumping the expiry
|
|
// and changing the data
|
|
if expired {
|
|
if expiresIn < types.MinNameRegistrationPeriod {
|
|
return errors.New(Fmt("Names must be registered for at least %d blocks", types.MinNameRegistrationPeriod))
|
|
}
|
|
entry.Expires = lastBlockHeight + expiresIn
|
|
entry.Owner = tx.Input.Address
|
|
log.Debug("An old namereg entry has expired and been reclaimed", "name", entry.Name, "expiresIn", expiresIn, "owner", entry.Owner)
|
|
} else {
|
|
// since the size of the data may have changed
|
|
// we use the total amount of "credit"
|
|
oldCredit := int64(entry.Expires-lastBlockHeight) * types.BaseEntryCost(entry.Name, entry.Data)
|
|
credit := oldCredit + value
|
|
expiresIn = int(credit / costPerBlock)
|
|
if expiresIn < types.MinNameRegistrationPeriod {
|
|
return errors.New(Fmt("Names must be registered for at least %d blocks", types.MinNameRegistrationPeriod))
|
|
}
|
|
entry.Expires = lastBlockHeight + expiresIn
|
|
log.Debug("Updated namereg entry", "name", entry.Name, "expiresIn", expiresIn, "oldCredit", oldCredit, "value", value, "credit", credit)
|
|
}
|
|
entry.Data = tx.Data
|
|
blockCache.UpdateNameRegEntry(entry)
|
|
}
|
|
} else {
|
|
if expiresIn < types.MinNameRegistrationPeriod {
|
|
return errors.New(Fmt("Names must be registered for at least %d blocks", types.MinNameRegistrationPeriod))
|
|
}
|
|
// entry does not exist, so create it
|
|
entry = &types.NameRegEntry{
|
|
Name: tx.Name,
|
|
Owner: tx.Input.Address,
|
|
Data: tx.Data,
|
|
Expires: lastBlockHeight + expiresIn,
|
|
}
|
|
log.Debug("Creating namereg entry", "name", entry.Name, "expiresIn", expiresIn)
|
|
blockCache.UpdateNameRegEntry(entry)
|
|
}
|
|
|
|
// TODO: something with the value sent?
|
|
|
|
// Good!
|
|
inAcc.Sequence += 1
|
|
inAcc.Balance -= value
|
|
blockCache.UpdateAccount(inAcc)
|
|
|
|
// TODO: maybe we want to take funds on error and allow txs in that don't do anythingi?
|
|
|
|
return nil
|
|
|
|
case *types.BondTx:
|
|
valInfo := blockCache.State().GetValidatorInfo(tx.PubKey.Address())
|
|
if valInfo != nil {
|
|
// TODO: In the future, check that the validator wasn't destroyed,
|
|
// add funds, merge UnbondTo outputs, and unbond validator.
|
|
return errors.New("Adding coins to existing validators not yet supported")
|
|
}
|
|
|
|
accounts, err := getInputs(blockCache, tx.Inputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
|
|
bondAcc := blockCache.GetAccount(tx.PubKey.Address())
|
|
if !hasBondPermission(blockCache, bondAcc) {
|
|
return fmt.Errorf("The bonder does not have permission to bond")
|
|
}
|
|
|
|
if !hasBondOrSendPermission(blockCache, accounts) {
|
|
return fmt.Errorf("At least one input lacks permission to bond")
|
|
}
|
|
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
inTotal, err := validateInputs(accounts, signBytes, tx.Inputs)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if err := tx.PubKey.ValidateBasic(); err != nil {
|
|
return err
|
|
}
|
|
if !tx.PubKey.VerifyBytes(signBytes, tx.Signature) {
|
|
return types.ErrTxInvalidSignature
|
|
}
|
|
outTotal, err := validateOutputs(tx.UnbondTo)
|
|
if err != nil {
|
|
return err
|
|
}
|
|
if outTotal > inTotal {
|
|
return types.ErrTxInsufficientFunds
|
|
}
|
|
fee := inTotal - outTotal
|
|
fees += fee
|
|
|
|
// Good! Adjust accounts
|
|
adjustByInputs(accounts, tx.Inputs)
|
|
for _, acc := range accounts {
|
|
blockCache.UpdateAccount(acc)
|
|
}
|
|
// Add ValidatorInfo
|
|
_s.SetValidatorInfo(&ValidatorInfo{
|
|
Address: tx.PubKey.Address(),
|
|
PubKey: tx.PubKey,
|
|
UnbondTo: tx.UnbondTo,
|
|
FirstBondHeight: _s.LastBlockHeight + 1,
|
|
FirstBondAmount: outTotal,
|
|
})
|
|
// Add Validator
|
|
added := _s.BondedValidators.Add(&Validator{
|
|
Address: tx.PubKey.Address(),
|
|
PubKey: tx.PubKey,
|
|
BondHeight: _s.LastBlockHeight + 1,
|
|
VotingPower: outTotal,
|
|
Accum: 0,
|
|
})
|
|
if !added {
|
|
// SOMETHING HAS GONE HORRIBLY WRONG
|
|
panic("Failed to add validator")
|
|
}
|
|
if evc != nil {
|
|
evc.FireEvent(types.EventStringBond(), tx)
|
|
}
|
|
return nil
|
|
|
|
case *types.UnbondTx:
|
|
// The validator must be active
|
|
_, val := _s.BondedValidators.GetByAddress(tx.Address)
|
|
if val == nil {
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
|
|
// Verify the signature
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
if !val.PubKey.VerifyBytes(signBytes, tx.Signature) {
|
|
return types.ErrTxInvalidSignature
|
|
}
|
|
|
|
// tx.Height must be greater than val.LastCommitHeight
|
|
if tx.Height <= val.LastCommitHeight {
|
|
return errors.New("Invalid unbond height")
|
|
}
|
|
|
|
// Good!
|
|
_s.unbondValidator(val)
|
|
if evc != nil {
|
|
evc.FireEvent(types.EventStringUnbond(), tx)
|
|
}
|
|
return nil
|
|
|
|
case *types.RebondTx:
|
|
// The validator must be inactive
|
|
_, val := _s.UnbondingValidators.GetByAddress(tx.Address)
|
|
if val == nil {
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
|
|
// Verify the signature
|
|
signBytes := account.SignBytes(_s.ChainID, tx)
|
|
if !val.PubKey.VerifyBytes(signBytes, tx.Signature) {
|
|
return types.ErrTxInvalidSignature
|
|
}
|
|
|
|
// tx.Height must be equal to the next height
|
|
if tx.Height != _s.LastBlockHeight+1 {
|
|
return errors.New(Fmt("Invalid rebond height. Expected %v, got %v", _s.LastBlockHeight+1, tx.Height))
|
|
}
|
|
|
|
// Good!
|
|
_s.rebondValidator(val)
|
|
if evc != nil {
|
|
evc.FireEvent(types.EventStringRebond(), tx)
|
|
}
|
|
return nil
|
|
|
|
case *types.DupeoutTx:
|
|
// Verify the signatures
|
|
_, accused := _s.BondedValidators.GetByAddress(tx.Address)
|
|
if accused == nil {
|
|
_, accused = _s.UnbondingValidators.GetByAddress(tx.Address)
|
|
if accused == nil {
|
|
return types.ErrTxInvalidAddress
|
|
}
|
|
}
|
|
voteASignBytes := account.SignBytes(_s.ChainID, &tx.VoteA)
|
|
voteBSignBytes := account.SignBytes(_s.ChainID, &tx.VoteB)
|
|
if !accused.PubKey.VerifyBytes(voteASignBytes, tx.VoteA.Signature) ||
|
|
!accused.PubKey.VerifyBytes(voteBSignBytes, tx.VoteB.Signature) {
|
|
return types.ErrTxInvalidSignature
|
|
}
|
|
|
|
// Verify equivocation
|
|
// TODO: in the future, just require one vote from a previous height that
|
|
// doesn't exist on this chain.
|
|
if tx.VoteA.Height != tx.VoteB.Height {
|
|
return errors.New("DupeoutTx heights don't match")
|
|
}
|
|
if tx.VoteA.Round != tx.VoteB.Round {
|
|
return errors.New("DupeoutTx rounds don't match")
|
|
}
|
|
if tx.VoteA.Type != tx.VoteB.Type {
|
|
return errors.New("DupeoutTx types don't match")
|
|
}
|
|
if bytes.Equal(tx.VoteA.BlockHash, tx.VoteB.BlockHash) {
|
|
return errors.New("DupeoutTx blockhashes shouldn't match")
|
|
}
|
|
|
|
// Good! (Bad validator!)
|
|
_s.destroyValidator(accused)
|
|
if evc != nil {
|
|
evc.FireEvent(types.EventStringDupeout(), tx)
|
|
}
|
|
return nil
|
|
|
|
default:
|
|
// SANITY CHECK (binary decoding should catch bad tx types
|
|
// before they get here
|
|
panic("Unknown Tx type")
|
|
}
|
|
}
|
|
|
|
//---------------------------------------------------------------
|
|
|
|
// Get permission on an account or fall back to global value
|
|
func HasPermission(state AccountGetter, acc *account.Account, perm ptypes.PermFlag) bool {
|
|
if acc == nil {
|
|
// TODO
|
|
// this needs to fall back to global or do some other specific things
|
|
// eg. a bondAcc may be nil and so can only bond if global bonding is true
|
|
}
|
|
|
|
v, err := acc.Permissions.Base.Get(perm)
|
|
if _, ok := err.(ptypes.ErrValueNotSet); ok {
|
|
return HasPermission(state, state.GetAccount(ptypes.GlobalPermissionsAddress), perm)
|
|
}
|
|
return v
|
|
}
|
|
|
|
// TODO: for debug log the failed accounts
|
|
func hasSendPermission(state AccountGetter, accs map[string]*account.Account) bool {
|
|
for _, acc := range accs {
|
|
if !HasPermission(state, acc, ptypes.Send) {
|
|
return false
|
|
}
|
|
}
|
|
return true
|
|
}
|
|
|
|
func hasCallPermission(state AccountGetter, acc *account.Account) bool {
|
|
return HasPermission(state, acc, ptypes.Call)
|
|
}
|
|
|
|
func hasCreatePermission(state AccountGetter, acc *account.Account) bool {
|
|
return HasPermission(state, acc, ptypes.CreateContract)
|
|
}
|
|
|
|
func hasBondPermission(state AccountGetter, acc *account.Account) bool {
|
|
return HasPermission(state, acc, ptypes.Bond)
|
|
}
|
|
|
|
func hasBondOrSendPermission(state AccountGetter, accs map[string]*account.Account) bool {
|
|
for _, acc := range accs {
|
|
if !HasPermission(state, acc, ptypes.Bond) {
|
|
if !HasPermission(state, acc, ptypes.Send) {
|
|
return false
|
|
}
|
|
}
|
|
}
|
|
return true
|
|
}
|