Problem: don't support blocking addresses in mempool

CHANGELOG.md

@@ -78,6 +78,7 @@
 - [#1151](https://github.com/crypto-org-chain/cronos/pull/1151) memiavl `CacheMultiStoreWithVersion` supports `io.Closer`.
 - [#1154](https://github.com/crypto-org-chain/cronos/pull/1154) Remove dependency on cosmos-sdk.
 - [#1171](https://github.com/crypto-org-chain/cronos/pull/1171) Add memiavl background snapshot writing concurrency limit.
+- [#1179](https://github.com/crypto-org-chain/cronos/pull/1179) Support blocking addresses in mempool.
 
 *April 13, 2023*
 

app/app.go

@@ -169,6 +169,8 @@ const (
 	//
 	// NOTE: In the SDK, the default value is 255.
 	AddrLen = 20
+
+	FlagBlockedAddresses = "blocked-addresses"
 )
 
 // this line is used by starport scaffolding # stargate/wasm/app/enabledProposals
@@ -862,7 +864,12 @@ func New(
 	app.SetPreBlocker(app.PreBlocker)
 	app.SetBeginBlocker(app.BeginBlocker)
 	app.SetEndBlocker(app.EndBlocker)
-	app.setAnteHandler(encodingConfig.TxConfig, cast.ToUint64(appOpts.Get(srvflags.EVMMaxTxGasWanted)))
+	if err := app.setAnteHandler(encodingConfig.TxConfig,
+		cast.ToUint64(appOpts.Get(srvflags.EVMMaxTxGasWanted)),
+		cast.ToStringSlice(appOpts.Get(FlagBlockedAddresses)),
+	); err != nil {
+		panic(err)
+	}
 	// In v0.46, the SDK introduces _postHandlers_. PostHandlers are like
 	// antehandlers, but are run _after_ the `runMsgs` execution. They are also
 	// defined as a chain, and have the same signature as antehandlers.
@@ -902,7 +909,17 @@ func New(
 }
 
 // use Ethermint's custom AnteHandler
-func (app *App) setAnteHandler(txConfig client.TxConfig, maxGasWanted uint64) {
+func (app *App) setAnteHandler(txConfig client.TxConfig, maxGasWanted uint64, blacklist []string) error {
+	blockedMap := make(map[string]struct{}, len(blacklist))
+	for _, str := range blacklist {
+		addr, err := sdk.AccAddressFromBech32(str)
+		if err != nil {
+			return fmt.Errorf("invalid bech32 address: %s, err: %w", str, err)
+		}
+
+		blockedMap[string(addr)] = struct{}{}
+	}
+	blockAddressDecorator := NewBlockAddressesDecorator(blockedMap)
 	evmOptions := evmante.HandlerOptions{
 		AccountKeeper:          app.AccountKeeper,
 		BankKeeper:             app.BankKeeper,
@@ -919,6 +936,7 @@ func (app *App) setAnteHandler(txConfig client.TxConfig, maxGasWanted uint64) {
 			sdk.MsgTypeURL(&evmtypes.MsgEthereumTx{}),
 			sdk.MsgTypeURL(&vestingtypes.MsgCreateVestingAccount{}),
 		},
+		ExtraDecorators: []sdk.AnteDecorator{blockAddressDecorator},
 	}
 	options := ante.HandlerOptions{
 		EvmOptions:   evmOptions,
@@ -927,10 +945,11 @@ func (app *App) setAnteHandler(txConfig client.TxConfig, maxGasWanted uint64) {
 
 	anteHandler, err := ante.NewAnteHandler(options)
 	if err != nil {
-		panic(err)
+		return err
 	}
 
 	app.SetAnteHandler(anteHandler)
+	return nil
 }
 
 func (app *App) setPostHandler() {

app/block_address.go

@@ -0,0 +1,31 @@
+package app
+
+import (
+	"fmt"
+
+	sdk "github.com/cosmos/cosmos-sdk/types"
+)
+
+// BlockAddressesDecorator block addresses from sending transactions
+type BlockAddressesDecorator struct {
+	blockedMap map[string]struct{}
+}
+
+func NewBlockAddressesDecorator(blacklist map[string]struct{}) BlockAddressesDecorator {
+	return BlockAddressesDecorator{
+		blockedMap: blacklist,
+	}
+}
+
+func (bad BlockAddressesDecorator) AnteHandle(ctx sdk.Context, tx sdk.Tx, simulate bool, next sdk.AnteHandler) (newCtx sdk.Context, err error) {
+	if ctx.IsCheckTx() {
+		for _, msg := range tx.GetMsgs() {
+			for _, signer := range msg.GetSigners() {
+				if _, ok := bad.blockedMap[string(signer)]; ok {
+					return ctx, fmt.Errorf("signer is blocked: %s", signer.String())
+				}
+			}
+		}
+	}
+	return next(ctx, tx, simulate)
+}

go.mod

@@ -31,7 +31,7 @@ require (
 	github.com/stretchr/testify v1.8.4
 	golang.org/x/exp v0.0.0-20230711153332-06a737ee72cb
 	google.golang.org/genproto/googleapis/api v0.0.0-20230629202037-9506855d4529
-	google.golang.org/grpc v1.56.2
+	google.golang.org/grpc v1.57.0
 	google.golang.org/protobuf v1.31.0
 	gopkg.in/yaml.v2 v2.4.0
 )
@@ -50,7 +50,6 @@ require (
 	github.com/99designs/keyring v1.2.1 // indirect
 	github.com/ChainSafe/go-schnorrkel v1.0.0 // indirect
 	github.com/DataDog/zstd v1.4.5 // indirect
-	github.com/HdrHistogram/hdrhistogram-go v1.1.2 // indirect
 	github.com/StackExchange/wmi v0.0.0-20180116203802-5d049714c4a6 // indirect
 	github.com/VictoriaMetrics/fastcache v1.6.0 // indirect
 	github.com/alitto/pond v1.8.3 // indirect
@@ -69,7 +68,7 @@ require (
 	github.com/cockroachdb/apd/v2 v2.0.2 // indirect
 	github.com/cockroachdb/errors v1.10.0 // indirect
 	github.com/cockroachdb/logtags v0.0.0-20230118201751-21c54148d20b // indirect
-	github.com/cockroachdb/pebble v0.0.0-20230315005856-dcb60b9212f9 // indirect
+	github.com/cockroachdb/pebble v0.0.0-20230807182518-7bcdd55ef1e3 // indirect
 	github.com/cockroachdb/redact v1.1.5 // indirect
 	github.com/coinbase/rosetta-sdk-go/types v1.0.0 // indirect
 	github.com/confio/ics23/go v0.9.0 // indirect
@@ -225,11 +224,7 @@ require (
 replace (
 	// Use cosmos keyring
 	github.com/99designs/keyring => github.com/cosmos/keyring v1.2.0
-	// the version used by cockroach v22.2.7 release
-	github.com/cockroachdb/pebble => github.com/cockroachdb/pebble v0.0.0-20230206180212-744ea7cc8f90
-	// use cometbft
-	github.com/cometbft/cometbft => github.com/cometbft/cometbft v0.37.2-0.20230905115601-790d57e1748f
-	github.com/cometbft/cometbft-db => github.com/crypto-org-chain/cometbft-db v0.0.0-20230412133340-ac70df4b45f6
+	github.com/cometbft/cometbft-db => github.com/crypto-org-chain/cometbft-db v0.0.0-20230921030527-0d47d7537e32
 	github.com/cosmos/cosmos-sdk => github.com/crypto-org-chain/cosmos-sdk v0.46.0-beta2.0.20230905040840-b3af5590283b
 	github.com/crypto-org-chain/cronos/memiavl => ./memiavl
 	github.com/crypto-org-chain/cronos/store => ./store
@@ -238,7 +233,7 @@ replace (
 	// TODO: remove it: https://github.com/cosmos/cosmos-sdk/issues/13134
 	github.com/dgrijalva/jwt-go => github.com/golang-jwt/jwt/v4 v4.4.2
 	github.com/ethereum/go-ethereum => github.com/evmos/go-ethereum v1.10.26-evmos-rc1
-	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.6.1-0.20230914072023-bdeaf36d31ea
+	github.com/evmos/ethermint => github.com/crypto-org-chain/ethermint v0.6.1-0.20230921025237-ae144329ecaf
 	// Fix upstream GHSA-h395-qcrw-5vmq and GHSA-3vp4-m3rf-835h vulnerabilities.
 	// TODO Remove it: https://github.com/cosmos/cosmos-sdk/issues/10409
 	github.com/gin-gonic/gin => github.com/gin-gonic/gin v1.9.0