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process_proposal.go
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/
process_proposal.go
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package app
import (
"bytes"
"fmt"
"sort"
"github.com/celestiaorg/celestia-app/pkg/appconsts"
"github.com/celestiaorg/celestia-app/pkg/da"
"github.com/celestiaorg/celestia-app/pkg/inclusion"
appns "github.com/celestiaorg/celestia-app/pkg/namespace"
"github.com/celestiaorg/celestia-app/pkg/shares"
blobtypes "github.com/celestiaorg/celestia-app/x/blob/types"
"github.com/celestiaorg/rsmt2d"
sdk "github.com/cosmos/cosmos-sdk/types"
abci "github.com/tendermint/tendermint/abci/types"
"github.com/tendermint/tendermint/libs/log"
tmproto "github.com/tendermint/tendermint/proto/tendermint/types"
coretypes "github.com/tendermint/tendermint/types"
)
const (
rejectedPropBlockLog = "Rejected proposal block:"
)
func (app *App) ProcessProposal(req abci.RequestProcessProposal) abci.ResponseProcessProposal {
// Check for blob inclusion:
// - each MsgPayForBlobs included in a block should have a corresponding blob data in the block body
// - the commitment in each PFB should match the commitment for the shares that contain that blob data
// - there should be no unpaid-for data
data, err := coretypes.DataFromProto(req.BlockData)
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "failure to unmarshal block data:", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
if !sort.IsSorted(coretypes.BlobsByNamespace(data.Blobs)) {
logInvalidPropBlock(app.Logger(), req.Header, "blobs are unsorted")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
for _, blob := range data.Blobs {
namespace, err := appns.New(blob.NamespaceVersion, blob.NamespaceID)
if err != nil {
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
err = namespace.ValidateBlobNamespace()
if err != nil {
logInvalidPropBlock(app.Logger(), req.Header, fmt.Sprintf("invalid blob namespace %v", namespace.Bytes()))
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
}
if !arePFBsOrderedAfterTxs(req.BlockData.Txs) {
logInvalidPropBlock(app.Logger(), req.Header, "PFBs are not all ordered at the end of the list of transactions")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
dataSquare, err := shares.Split(data, true)
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "failure to compute shares from block data:", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
cacher := inclusion.NewSubtreeCacher(data.SquareSize)
eds, err := rsmt2d.ComputeExtendedDataSquare(shares.ToBytes(dataSquare), appconsts.DefaultCodec(), cacher.Constructor)
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "failure to erasure the data square", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
dah := da.NewDataAvailabilityHeader(eds)
if !bytes.Equal(dah.Hash(), req.Header.DataHash) {
logInvalidPropBlock(app.Logger(), req.Header, "proposed data root differs from calculated data root")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
// create the anteHanders that are used to check the validity of
// transactions. We verify the signatures of PFB containing txs using the
// sigVerifyAnterHandler, and simply increase the nonce of all other
// transactions.
svHander := sigVerifyAnteHandler(&app.AccountKeeper, app.txConfig)
seqHandler := incrementSequenceAnteHandler(&app.AccountKeeper)
sdkCtx, err := app.NewProcessProposalQueryContext()
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "failure to load query context", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
// iterate over all of the MsgPayForBlob transactions and ensure that their
// commitments are subtree roots of the data root.
for _, rawTx := range req.BlockData.Txs {
tx := rawTx
wrappedTx, isWrapped := coretypes.UnmarshalIndexWrapper(rawTx)
if isWrapped {
tx = wrappedTx.Tx
}
sdkTx, err := app.txConfig.TxDecoder()(tx)
if err != nil {
// we don't reject the block here because it is not a block validity
// rule that all transactions included in the block data are
// decodable
continue
}
pfb, has := hasPFB(sdkTx.GetMsgs())
if !has {
// we need to increment the sequence for every transaction so that
// the signature check below is accurate. this error only gets hit
// if the account in question doens't exist.
sdkCtx, err = seqHandler(sdkCtx, sdkTx, false)
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "failure to incrememnt sequence", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
// we do not need to perform further checks on this transaction,
// since it has no PFB
continue
}
// ensure there is only a single sdk.Msg included in the transaction
if len(sdkTx.GetMsgs()) > 1 {
logInvalidPropBlock(app.Logger(), req.Header, "invalid PFB found: combined with one or more other sdk.Msg")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
// all PFBs must have a share index, so that we can find their
// respective blob.
if !isWrapped {
logInvalidPropBlock(app.Logger(), req.Header, "Found a MsgPayForBlobs without a share index")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
if err = pfb.ValidateBasic(); err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "invalid MsgPayForBlobs", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
for i, shareIndex := range wrappedTx.ShareIndexes {
commitment, err := inclusion.GetCommitment(cacher, dah, int(shareIndex), shares.SparseSharesNeeded(pfb.BlobSizes[i]))
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "commitment not found", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
if !bytes.Equal(pfb.ShareCommitments[i], commitment) {
logInvalidPropBlock(app.Logger(), req.Header, "found commitment does not match user's")
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
}
sdkCtx, err = svHander(sdkCtx, sdkTx, true)
if err != nil {
logInvalidPropBlockError(app.Logger(), req.Header, "invalid PFB signature", err)
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_REJECT,
}
}
}
return abci.ResponseProcessProposal{
Result: abci.ResponseProcessProposal_ACCEPT,
}
}
func hasPFB(msgs []sdk.Msg) (*blobtypes.MsgPayForBlobs, bool) {
for _, msg := range msgs {
if pfb, ok := msg.(*blobtypes.MsgPayForBlobs); ok {
return pfb, true
}
}
return nil, false
}
func arePFBsOrderedAfterTxs(txs [][]byte) bool {
seenFirstPFB := false
for _, tx := range txs {
_, isWrapped := coretypes.UnmarshalIndexWrapper(tx)
if isWrapped {
seenFirstPFB = true
} else if seenFirstPFB {
return false
}
}
return true
}
func logInvalidPropBlock(l log.Logger, h tmproto.Header, reason string) {
l.Error(
rejectedPropBlockLog,
"reason",
reason,
"proposer",
h.ProposerAddress,
)
}
func logInvalidPropBlockError(l log.Logger, h tmproto.Header, reason string, err error) {
l.Error(
rejectedPropBlockLog,
"reason",
reason,
"proposer",
h.ProposerAddress,
"err",
err.Error(),
)
}