func (cs *ConsensusState) SetProposal(proposal *types.Proposal) error {
cs.mtx.Lock()
defer cs.mtx.Unlock()
// Already have one
if cs.Proposal != nil {
return nil
}
// Does not apply
if proposal.Height != cs.Height || proposal.Round != cs.Round {
return nil
}
// We don't care about the proposal if we're already in RoundStepCommit.
if RoundStepCommit <= cs.Step {
return nil
}
// Verify POLRound, which must be -1 or between 0 and proposal.Round exclusive.
if proposal.POLRound != -1 &&
(proposal.POLRound < 0 || proposal.Round <= proposal.POLRound) {
return ErrInvalidProposalPOLRound
}
// Verify signature
if !cs.Validators.Proposer().PubKey.VerifyBytes(acm.SignBytes(cs.state.ChainID, proposal), proposal.Signature) {
return ErrInvalidProposalSignature
}
cs.Proposal = proposal
cs.ProposalBlockParts = types.NewPartSetFromHeader(proposal.BlockPartsHeader)
return nil
}
func (privVal *PrivValidator) SignVote(chainID string, vote *Vote) error {
privVal.mtx.Lock()
defer privVal.mtx.Unlock()
// If height regression, panic
if privVal.LastHeight > vote.Height {
return errors.New("Height regression in SignVote")
}
// More cases for when the height matches
if privVal.LastHeight == vote.Height {
// If round regression, panic
if privVal.LastRound > vote.Round {
return errors.New("Round regression in SignVote")
}
// If step regression, panic
if privVal.LastRound == vote.Round && privVal.LastStep > voteToStep(vote) {
return errors.New("Step regression in SignVote")
}
}
// Persist height/round/step
privVal.LastHeight = vote.Height
privVal.LastRound = vote.Round
privVal.LastStep = voteToStep(vote)
privVal.save()
// Sign
vote.Signature = privVal.signer.Sign(acm.SignBytes(chainID, vote))
return nil
}
func TestSendTxSignable(t *testing.T) {
sendTx := &SendTx{
Inputs: []*TxInput{
&TxInput{
Address: []byte("input1"),
Amount: 12345,
Sequence: 67890,
},
&TxInput{
Address: []byte("input2"),
Amount: 111,
Sequence: 222,
},
},
Outputs: []*TxOutput{
&TxOutput{
Address: []byte("output1"),
Amount: 333,
},
&TxOutput{
Address: []byte("output2"),
Amount: 444,
},
},
}
signBytes := acm.SignBytes(chainID, sendTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[1,{"inputs":[{"address":"696E70757431","amount":12345,"sequence":67890},{"address":"696E70757432","amount":111,"sequence":222}],"outputs":[{"address":"6F757470757431","amount":333},{"address":"6F757470757432","amount":444}]}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for SendTx. Expected:\n%v\nGot:\n%v", expected, signStr)
}
}
func TestDupeoutTxSignable(t *testing.T) {
privAcc := acm.GenPrivAccount()
partSetHeader := PartSetHeader{Total: 10, Hash: []byte("partsethash")}
voteA := &Vote{
Height: 10,
Round: 2,
Type: VoteTypePrevote,
BlockHash: []byte("myblockhash"),
BlockPartsHeader: partSetHeader,
}
sig := privAcc.Sign(chainID, voteA)
voteA.Signature = sig.(acm.SignatureEd25519)
voteB := voteA.Copy()
voteB.BlockHash = []byte("myotherblockhash")
sig = privAcc.Sign(chainID, voteB)
voteB.Signature = sig.(acm.SignatureEd25519)
dupeoutTx := &DupeoutTx{
Address: []byte("address1"),
VoteA: *voteA,
VoteB: *voteB,
}
signBytes := acm.SignBytes(chainID, dupeoutTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[20,{"address":"6164647265737331","vote_a":%v,"vote_b":%v}]}`,
config.GetString("chain_id"), *voteA, *voteB)
if signStr != expected {
t.Errorf("Got unexpected sign string for DupeoutTx")
}
}
func (data *Data) Hash() []byte {
if data.hash == nil {
bs := make([]interface{}, len(data.Txs))
for i, tx := range data.Txs {
bs[i] = acm.SignBytes(config.GetString("chain_id"), tx)
}
data.hash = merkle.SimpleHashFromBinaries(bs) // NOTE: leaves are TxIDs.
}
return data.hash
}
func TestRebondTxSignable(t *testing.T) {
rebondTx := &RebondTx{
Address: []byte("address1"),
Height: 111,
}
signBytes := acm.SignBytes(chainID, rebondTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[19,{"address":"6164647265737331","height":111}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for RebondTx")
}
}
// Verify that +2/3 of the set had signed the given signBytes
func (valSet *ValidatorSet) VerifyValidation(chainID string,
hash []byte, parts types.PartSetHeader, height int, v *types.Validation) error {
if valSet.Size() != len(v.Precommits) {
return fmt.Errorf("Invalid validation -- wrong set size: %v vs %v", valSet.Size(), len(v.Precommits))
}
if height != v.Height() {
return fmt.Errorf("Invalid validation -- wrong height: %v vs %v", height, v.Height())
}
talliedVotingPower := int64(0)
round := v.Round()
for idx, precommit := range v.Precommits {
// may be nil if validator skipped.
if precommit == nil {
continue
}
if precommit.Height != height {
return fmt.Errorf("Invalid validation -- wrong height: %v vs %v", height, precommit.Height)
}
if precommit.Round != round {
return fmt.Errorf("Invalid validation -- wrong round: %v vs %v", round, precommit.Round)
}
if precommit.Type != types.VoteTypePrecommit {
return fmt.Errorf("Invalid validation -- not precommit @ index %v", idx)
}
_, val := valSet.GetByIndex(idx)
// Validate signature
precommitSignBytes := account.SignBytes(chainID, precommit)
if !val.PubKey.VerifyBytes(precommitSignBytes, precommit.Signature) {
return fmt.Errorf("Invalid validation -- invalid signature: %v", precommit)
}
if !bytes.Equal(precommit.BlockHash, hash) {
continue // Not an error, but doesn't count
}
if !parts.Equals(precommit.BlockParts) {
continue // Not an error, but doesn't count
}
// Good precommit!
talliedVotingPower += val.VotingPower
}
if talliedVotingPower > valSet.TotalVotingPower()*2/3 {
return nil
} else {
return fmt.Errorf("Invalid validation -- insufficient voting power: got %v, needed %v",
talliedVotingPower, (valSet.TotalVotingPower()*2/3 + 1))
}
}
func TestProposalSignable(t *testing.T) {
proposal := &Proposal{
Height: 12345,
Round: 23456,
BlockPartsHeader: PartSetHeader{111, []byte("blockparts")},
POLRound: -1,
}
signBytes := acm.SignBytes(config.GetString("chain_id"), proposal)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","proposal":{"block_parts_header":{"hash":"626C6F636B7061727473","total":111},"height":12345,"pol_round":-1,"round":23456}}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for SendTx. Expected:\n%v\nGot:\n%v", expected, signStr)
}
}
func (voteSet *VoteSet) addVote(val *sm.Validator, valIndex int, vote *types.Vote) (bool, int, error) {
// Make sure the step matches. (or that vote is commit && round < voteSet.round)
if (vote.Height != voteSet.height) ||
(vote.Round != voteSet.round) ||
(vote.Type != voteSet.type_) {
return false, 0, types.ErrVoteUnexpectedStep
}
// Check signature.
if !val.PubKey.VerifyBytes(acm.SignBytes(config.GetString("chain_id"), vote), vote.Signature) {
// Bad signature.
return false, 0, types.ErrVoteInvalidSignature
}
// If vote already exists, return false.
if existingVote := voteSet.votes[valIndex]; existingVote != nil {
if bytes.Equal(existingVote.BlockHash, vote.BlockHash) {
return false, valIndex, nil
} else {
return false, valIndex, &types.ErrVoteConflictingSignature{
VoteA: existingVote,
VoteB: vote,
}
}
}
// Add vote.
voteSet.votes[valIndex] = vote
voteSet.votesBitArray.SetIndex(valIndex, true)
blockKey := string(vote.BlockHash) + string(wire.BinaryBytes(vote.BlockParts))
totalBlockHashVotes := voteSet.votesByBlock[blockKey] + val.VotingPower
voteSet.votesByBlock[blockKey] = totalBlockHashVotes
voteSet.totalVotes += val.VotingPower
// If we just nudged it up to two thirds majority, add it.
if totalBlockHashVotes > voteSet.valSet.TotalVotingPower()*2/3 &&
(totalBlockHashVotes-val.VotingPower) <= voteSet.valSet.TotalVotingPower()*2/3 {
voteSet.maj23Hash = vote.BlockHash
voteSet.maj23Parts = vote.BlockParts
voteSet.maj23Exists = true
}
return true, valIndex, nil
}
func checkTx(t *testing.T, fromAddr []byte, priv *acm.PrivAccount, tx *types.SendTx) {
if bytes.Compare(tx.Inputs[0].Address, fromAddr) != 0 {
t.Fatal("Tx input addresses don't match!")
}
signBytes := acm.SignBytes(chainID, tx)
in := tx.Inputs[0] //(*types.SendTx).Inputs[0]
if err := in.ValidateBasic(); err != nil {
t.Fatal(err)
}
// Check signatures
// acc := getAccount(t, byteAddr)
// NOTE: using the acc here instead of the in fails; it is nil.
if !in.PubKey.VerifyBytes(signBytes, in.Signature) {
t.Fatal(types.ErrTxInvalidSignature)
}
}
func TestNameTxSignable(t *testing.T) {
nameTx := &NameTx{
Input: &TxInput{
Address: []byte("input1"),
Amount: 12345,
Sequence: 250,
},
Name: "google.com",
Data: "secretly.not.google.com",
Fee: 1000,
}
signBytes := acm.SignBytes(chainID, nameTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[3,{"data":"secretly.not.google.com","fee":1000,"input":{"address":"696E70757431","amount":12345,"sequence":250},"name":"google.com"}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for CallTx. Expected:\n%v\nGot:\n%v", expected, signStr)
}
}
func (privVal *PrivValidator) SignRebondTx(chainID string, rebondTx *types.RebondTx) error {
privVal.mtx.Lock()
defer privVal.mtx.Unlock()
if privVal.LastHeight < rebondTx.Height {
// Persist height/round/step
// Prevent doing anything else for this rebondTx.Height.
privVal.LastHeight = rebondTx.Height
privVal.LastRound = math.MaxInt32 // MaxInt64 overflows on 32bit architectures.
privVal.LastStep = math.MaxInt8
privVal.save()
// Sign
rebondTx.Signature = privVal.PrivKey.Sign(account.SignBytes(chainID, rebondTx)).(account.SignatureEd25519)
return nil
} else {
return errors.New(fmt.Sprintf("Attempt of duplicate signing of rebondTx: Height %v", rebondTx.Height))
}
}
func TestCallTxSignable(t *testing.T) {
callTx := &CallTx{
Input: &TxInput{
Address: []byte("input1"),
Amount: 12345,
Sequence: 67890,
},
Address: []byte("contract1"),
GasLimit: 111,
Fee: 222,
Data: []byte("data1"),
}
signBytes := acm.SignBytes(chainID, callTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[2,{"address":"636F6E747261637431","data":"6461746131","fee":222,"gas_limit":111,"input":{"address":"696E70757431","amount":12345,"sequence":67890}}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for CallTx. Expected:\n%v\nGot:\n%v", expected, signStr)
}
}
func (privVal *PrivValidator) SignProposal(chainID string, proposal *Proposal) error {
privVal.mtx.Lock()
defer privVal.mtx.Unlock()
if privVal.LastHeight < proposal.Height ||
privVal.LastHeight == proposal.Height && privVal.LastRound < proposal.Round ||
privVal.LastHeight == 0 && privVal.LastRound == 0 && privVal.LastStep == stepNone {
// Persist height/round/step
privVal.LastHeight = proposal.Height
privVal.LastRound = proposal.Round
privVal.LastStep = stepPropose
privVal.save()
// Sign
proposal.Signature = privVal.PrivKey.Sign(account.SignBytes(chainID, proposal)).(account.SignatureEd25519)
return nil
} else {
return errors.New(fmt.Sprintf("Attempt of duplicate signing of proposal: Height %v, Round %v", proposal.Height, proposal.Round))
}
}
func TestPermissionsTxSignable(t *testing.T) {
permsTx := &PermissionsTx{
Input: &TxInput{
Address: []byte("input1"),
Amount: 12345,
Sequence: 250,
},
PermArgs: &ptypes.SetBaseArgs{
Address: []byte("address1"),
Permission: 1,
Value: true,
},
}
signBytes := acm.SignBytes(chainID, permsTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[32,{"args":"[2,{"address":"6164647265737331","permission":1,"value":true}]","input":{"address":"696E70757431","amount":12345,"sequence":250}}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Got unexpected sign string for CallTx. Expected:\n%v\nGot:\n%v", expected, signStr)
}
}
// tx has either one input or we default to the first one (ie for send/bond)
// TODO: better support for multisig and bonding
func signTx(signAddr, chainID string, tx_ types.Tx) ([]byte, types.Tx, error) {
signBytes := fmt.Sprintf("%X", account.SignBytes(chainID, tx_))
var inputAddr []byte
var sigED account.SignatureEd25519
switch tx := tx_.(type) {
case *types.SendTx:
inputAddr = tx.Inputs[0].Address
defer func(s *account.SignatureEd25519) { tx.Inputs[0].Signature = *s }(&sigED)
case *types.NameTx:
inputAddr = tx.Input.Address
defer func(s *account.SignatureEd25519) { tx.Input.Signature = *s }(&sigED)
case *types.CallTx:
inputAddr = tx.Input.Address
defer func(s *account.SignatureEd25519) { tx.Input.Signature = *s }(&sigED)
case *types.PermissionsTx:
inputAddr = tx.Input.Address
defer func(s *account.SignatureEd25519) { tx.Input.Signature = *s }(&sigED)
case *types.BondTx:
inputAddr = tx.Inputs[0].Address
defer func(s *account.SignatureEd25519) {
tx.Signature = *s
tx.Inputs[0].Signature = *s
}(&sigED)
case *types.UnbondTx:
inputAddr = tx.Address
defer func(s *account.SignatureEd25519) { tx.Signature = *s }(&sigED)
case *types.RebondTx:
inputAddr = tx.Address
defer func(s *account.SignatureEd25519) { tx.Signature = *s }(&sigED)
}
addrHex := fmt.Sprintf("%X", inputAddr)
sig, err := Sign(signBytes, addrHex, signAddr)
if err != nil {
return nil, nil, err
}
sigED = account.SignatureEd25519(sig)
logger.Debugf("SIG: %X\n", sig)
return inputAddr, tx_, nil
}
func TestBondTxSignable(t *testing.T) {
privKeyBytes := make([]byte, 64)
var privKeyArray [64]byte
copy(privKeyArray[:], privKeyBytes)
privAccount := acm.GenPrivAccountFromPrivKeyBytes(&privKeyArray)
bondTx := &BondTx{
PubKey: privAccount.PubKey.(acm.PubKeyEd25519),
Inputs: []*TxInput{
&TxInput{
Address: []byte("input1"),
Amount: 12345,
Sequence: 67890,
},
&TxInput{
Address: []byte("input2"),
Amount: 111,
Sequence: 222,
},
},
UnbondTo: []*TxOutput{
&TxOutput{
Address: []byte("output1"),
Amount: 333,
},
&TxOutput{
Address: []byte("output2"),
Amount: 444,
},
},
}
signBytes := acm.SignBytes(chainID, bondTx)
signStr := string(signBytes)
expected := Fmt(`{"chain_id":"%s","tx":[17,{"inputs":[{"address":"696E70757431","amount":12345,"sequence":67890},{"address":"696E70757432","amount":111,"sequence":222}],"pub_key":[1,"3B6A27BCCEB6A42D62A3A8D02A6F0D73653215771DE243A63AC048A18B59DA29"],"unbond_to":[{"address":"6F757470757431","amount":333},{"address":"6F757470757432","amount":444}]}]}`,
config.GetString("chain_id"))
if signStr != expected {
t.Errorf("Unexpected sign string for BondTx. \nGot %s\nExpected %s", signStr, expected)
}
}
func (privVal *PrivValidator) SignVoteUnsafe(chainID string, vote *types.Vote) {
vote.Signature = privVal.PrivKey.Sign(account.SignBytes(chainID, vote)).(account.SignatureEd25519)
}
// This should match the leaf hashes of Block.Data.Hash()'s SimpleMerkleTree.
func TxID(chainID string, tx Tx) []byte {
signBytes := account.SignBytes(chainID, tx)
return binary.BinaryRipemd160(signBytes)
}
func signAddVote(privVal *PrivValidator, vote *Vote, voteSet *VoteSet) (bool, error) {
vote.Signature = privVal.signer.Sign(acm.SignBytes(config.GetString("chain_id"), vote))
added, _, err := voteSet.AddByAddress(privVal.Address, vote)
return added, err
}
// This should match the leaf hashes of Block.Data.Hash()'s SimpleMerkleTree.
func TxID(chainID string, tx Tx) []byte {
signBytes := acm.SignBytes(chainID, tx)
return wire.BinaryRipemd160(signBytes)
}
// 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) (err 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
// if any outputs don't exist, all inputs must have CreateAccount perm
accounts, err = getOrMakeOutputs(blockCache, accounts, tx.Outputs)
if err != nil {
return err
}
signBytes := acm.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), types.EventDataTx{tx, nil, ""})
}
for _, o := range tx.Outputs {
evc.FireEvent(types.EventStringAccOutput(o.Address), types.EventDataTx{tx, nil, ""})
}
}
return nil
case *types.CallTx:
var inAcc, outAcc *acm.Account
// Validate input
inAcc = blockCache.GetAccount(tx.Input.Address)
if inAcc == nil {
log.Info(Fmt("Can't find in account %X", tx.Input.Address))
return types.ErrTxInvalidAddress
}
createContract := len(tx.Address) == 0
if createContract {
if !hasCreateContractPermission(blockCache, inAcc) {
return fmt.Errorf("Account %X does not have CreateContract 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.Info(Fmt("Can't find pubkey for %X", tx.Input.Address))
return err
}
signBytes := acm.SignBytes(_s.ChainID, tx)
err := validateInput(inAcc, signBytes, tx.Input)
if err != nil {
log.Info(Fmt("validateInput failed on %X: %v", tx.Input.Address, err))
return err
}
if tx.Input.Amount < tx.Fee {
log.Info(Fmt("Sender did not send enough to cover the fee %X", tx.Input.Address))
return types.ErrTxInsufficientFunds
}
if !createContract {
// Validate output
if len(tx.Address) != 20 {
log.Info(Fmt("Destination address is not 20 bytes %X", tx.Address))
return types.ErrTxInvalidAddress
}
// check if its a native contract
if vm.RegisteredNativeContract(LeftPadWord256(tx.Address)) {
return fmt.Errorf("NativeContracts can not be called using CallTx. Use a contract or the appropriate tx type (eg. PermissionsTx, NameTx)")
}
// Output account 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.Info(Fmt("Out account: %v", outAcc))
// Good!
value := tx.Input.Amount - tx.Fee
inAcc.Sequence += 1
inAcc.Balance -= tx.Fee
blockCache.UpdateAccount(inAcc)
// The logic in runCall MUST NOT return.
if runCall {
// VM call variables
var (
gas int64 = tx.GasLimit
err error = nil
caller *vm.Account = toVMAccount(inAcc)
callee *vm.Account = nil // initialized below
code []byte = nil
ret []byte = nil
txCache = NewTxCache(blockCache)
params = vm.Params{
BlockHeight: int64(_s.LastBlockHeight),
BlockHash: LeftPadWord256(_s.LastBlockHash),
BlockTime: _s.LastBlockTime.Unix(),
GasLimit: _s.GetGasLimit(),
}
)
if !createContract && (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 contract and call with another
// you have to wait a block to avoid a re-ordering attack
// that will take your fees
if outAcc == nil {
log.Info(Fmt("%X tries to call %X but it does not exist.",
inAcc.Address, tx.Address))
} else {
log.Info(Fmt("%X tries to call %X but code is blank.",
inAcc.Address, tx.Address))
}
err = types.ErrTxInvalidAddress
goto CALL_COMPLETE
}
// get or create callee
if createContract {
// We already checked for permission
callee = txCache.CreateAccount(caller)
log.Info(Fmt("Created new contract %X", callee.Address))
code = tx.Data
} else {
callee = toVMAccount(outAcc)
log.Info(Fmt("Calling contract %X with code %X", callee.Address, callee.Code))
code = callee.Code
}
log.Info(Fmt("Code for this contract: %X", code))
// Run VM call and sync txCache to blockCache.
{ // Capture scope for goto.
// Write caller/callee to txCache.
txCache.UpdateAccount(caller)
txCache.UpdateAccount(callee)
vmach := vm.NewVM(txCache, params, caller.Address, types.TxID(_s.ChainID, tx))
vmach.SetFireable(evc)
// NOTE: Call() transfers the value from caller to callee iff call succeeds.
ret, err = vmach.Call(caller, callee, code, tx.Data, value, &gas)
if err != nil {
// Failure. Charge the gas fee. The 'value' was otherwise not transferred.
log.Info(Fmt("Error on execution: %v", err))
goto CALL_COMPLETE
}
log.Info("Successful execution")
if createContract {
callee.Code = ret
}
txCache.Sync()
}
CALL_COMPLETE: // err may or may not be nil.
// Create a receipt from the ret and whether errored.
log.Notice("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 {
exception := ""
if err != nil {
exception = err.Error()
}
evc.FireEvent(types.EventStringAccInput(tx.Input.Address), types.EventDataTx{tx, ret, exception})
evc.FireEvent(types.EventStringAccOutput(tx.Address), types.EventDataTx{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 createContract {
inAcc.Sequence += 1
}
blockCache.UpdateAccount(inAcc)
}
return nil
case *types.NameTx:
var inAcc *acm.Account
// Validate input
inAcc = blockCache.GetAccount(tx.Input.Address)
if inAcc == nil {
log.Info(Fmt("Can't find in account %X", tx.Input.Address))
return types.ErrTxInvalidAddress
}
// check permission
if !hasNamePermission(blockCache, inAcc) {
return fmt.Errorf("Account %X does not have Name permission", tx.Input.Address)
}
// pubKey should be present in either "inAcc" or "tx.Input"
if err := checkInputPubKey(inAcc, tx.Input); err != nil {
log.Info(Fmt("Can't find pubkey for %X", tx.Input.Address))
return err
}
signBytes := acm.SignBytes(_s.ChainID, tx)
err := validateInput(inAcc, signBytes, tx.Input)
if err != nil {
log.Info(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.Info(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 {
return err
}
value := tx.Input.Amount - tx.Fee
// let's say cost of a name for one block is len(data) + 32
costPerBlock := types.NameCostPerBlock(types.NameBaseCost(tx.Name, tx.Data))
expiresIn := int(value / costPerBlock)
lastBlockHeight := _s.LastBlockHeight
log.Info("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.Info(Fmt("Sender %X is trying to update a name (%s) for which he is not owner", tx.Input.Address, tx.Name))
return types.ErrTxPermissionDenied
}
} 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.Info("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.Info("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.NameBaseCost(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.Info("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.Info("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?
if evc != nil {
evc.FireEvent(types.EventStringAccInput(tx.Input.Address), types.EventDataTx{tx, nil, ""})
evc.FireEvent(types.EventStringNameReg(tx.Name), types.EventDataTx{tx, nil, ""})
}
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
}
// add outputs to accounts map
// if any outputs don't exist, all inputs must have CreateAccount perm
// though outputs aren't created until unbonding/release time
canCreate := hasCreateAccountPermission(blockCache, accounts)
for _, out := range tx.UnbondTo {
acc := blockCache.GetAccount(out.Address)
if acc == nil && !canCreate {
return fmt.Errorf("At least one input does not have permission to create accounts")
}
}
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 := acm.SignBytes(_s.ChainID, tx)
inTotal, err := validateInputs(accounts, signBytes, tx.Inputs)
if 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(&types.ValidatorInfo{
Address: tx.PubKey.Address(),
PubKey: tx.PubKey,
UnbondTo: tx.UnbondTo,
FirstBondHeight: _s.LastBlockHeight + 1,
FirstBondAmount: outTotal,
})
// Add Validator
added := _s.BondedValidators.Add(&types.Validator{
Address: tx.PubKey.Address(),
PubKey: tx.PubKey,
BondHeight: _s.LastBlockHeight + 1,
VotingPower: outTotal,
Accum: 0,
})
if !added {
PanicCrisis("Failed to add validator")
}
if evc != nil {
// TODO: fire for all inputs
evc.FireEvent(types.EventStringBond(), types.EventDataTx{tx, nil, ""})
}
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 := acm.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(), types.EventDataTx{tx, nil, ""})
}
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 := acm.SignBytes(_s.ChainID, tx)
if !val.PubKey.VerifyBytes(signBytes, tx.Signature) {
return types.ErrTxInvalidSignature
}
// tx.Height must be in a suitable range
minRebondHeight := _s.LastBlockHeight - (validatorTimeoutBlocks / 2)
maxRebondHeight := _s.LastBlockHeight + 2
if !((minRebondHeight <= tx.Height) && (tx.Height <= maxRebondHeight)) {
return errors.New(Fmt("Rebond height not in range. Expected %v <= %v <= %v",
minRebondHeight, tx.Height, maxRebondHeight))
}
// Good!
_s.rebondValidator(val)
if evc != nil {
evc.FireEvent(types.EventStringRebond(), types.EventDataTx{tx, nil, ""})
}
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 := acm.SignBytes(_s.ChainID, &tx.VoteA)
voteBSignBytes := acm.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(), types.EventDataTx{tx, nil, ""})
}
return nil
case *types.PermissionsTx:
var inAcc *acm.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
}
permFlag := tx.PermArgs.PermFlag()
// check permission
if !HasPermission(blockCache, inAcc, permFlag) {
return fmt.Errorf("Account %X does not have moderator permission %s (%b)", tx.Input.Address, ptypes.PermFlagToString(permFlag), permFlag)
}
// 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 := acm.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
}
value := tx.Input.Amount
log.Debug("New PermissionsTx", "function", ptypes.PermFlagToString(permFlag), "args", tx.PermArgs)
var permAcc *acm.Account
switch args := tx.PermArgs.(type) {
case *ptypes.HasBaseArgs:
// this one doesn't make sense from txs
return fmt.Errorf("HasBase is for contracts, not humans. Just look at the blockchain")
case *ptypes.SetBaseArgs:
if permAcc = blockCache.GetAccount(args.Address); permAcc == nil {
return fmt.Errorf("Trying to update permissions for unknown account %X", args.Address)
}
err = permAcc.Permissions.Base.Set(args.Permission, args.Value)
case *ptypes.UnsetBaseArgs:
if permAcc = blockCache.GetAccount(args.Address); permAcc == nil {
return fmt.Errorf("Trying to update permissions for unknown account %X", args.Address)
}
err = permAcc.Permissions.Base.Unset(args.Permission)
case *ptypes.SetGlobalArgs:
if permAcc = blockCache.GetAccount(ptypes.GlobalPermissionsAddress); permAcc == nil {
PanicSanity("can't find global permissions account")
}
err = permAcc.Permissions.Base.Set(args.Permission, args.Value)
case *ptypes.HasRoleArgs:
return fmt.Errorf("HasRole is for contracts, not humans. Just look at the blockchain")
case *ptypes.AddRoleArgs:
if permAcc = blockCache.GetAccount(args.Address); permAcc == nil {
return fmt.Errorf("Trying to update roles for unknown account %X", args.Address)
}
if !permAcc.Permissions.AddRole(args.Role) {
return fmt.Errorf("Role (%s) already exists for account %X", args.Role, args.Address)
}
case *ptypes.RmRoleArgs:
if permAcc = blockCache.GetAccount(args.Address); permAcc == nil {
return fmt.Errorf("Trying to update roles for unknown account %X", args.Address)
}
if !permAcc.Permissions.RmRole(args.Role) {
return fmt.Errorf("Role (%s) does not exist for account %X", args.Role, args.Address)
}
default:
PanicSanity(Fmt("invalid permission function: %s", ptypes.PermFlagToString(permFlag)))
}
// TODO: maybe we want to take funds on error and allow txs in that don't do anythingi?
if err != nil {
return err
}
// Good!
inAcc.Sequence += 1
inAcc.Balance -= value
blockCache.UpdateAccount(inAcc)
if permAcc != nil {
blockCache.UpdateAccount(permAcc)
}
if evc != nil {
evc.FireEvent(types.EventStringAccInput(tx.Input.Address), types.EventDataTx{tx, nil, ""})
evc.FireEvent(types.EventStringPermissions(ptypes.PermFlagToString(permFlag)), types.EventDataTx{tx, nil, ""})
}
return nil
default:
// binary decoding should not let this happen
PanicSanity("Unknown Tx type")
return nil
}
}