feat(cli): add validate notice command

CHANGELOG.md

@@ -19,6 +19,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 - Added inspect command to `cartesi-rollups-cli`
 - Added increase-time command to `cartesi-rollups-cli`
 - Added instructions on how to run the node with Docker.
+- Added validate command to `cartesi-rollups-cli`
 
 ### Changed
 

cmd/cartesi-rollups-cli/root/root.go

@@ -9,6 +9,7 @@ import (
 	"github.com/cartesi/rollups-node/cmd/cartesi-rollups-cli/root/read"
 	"github.com/cartesi/rollups-node/cmd/cartesi-rollups-cli/root/savesnapshot"
 	"github.com/cartesi/rollups-node/cmd/cartesi-rollups-cli/root/send"
+	"github.com/cartesi/rollups-node/cmd/cartesi-rollups-cli/root/validate"
 	"github.com/spf13/cobra"
 )
 
@@ -25,5 +26,6 @@ func init() {
 	Cmd.AddCommand(savesnapshot.Cmd)
 	Cmd.AddCommand(inspect.Cmd)
 	Cmd.AddCommand(increasetime.Cmd)
+	Cmd.AddCommand(validate.Cmd)
 	Cmd.DisableAutoGenTag = true
 }

cmd/cartesi-rollups-cli/root/validate/validate.go

@@ -0,0 +1,92 @@
+// (c) Cartesi and individual authors (see AUTHORS)
+// SPDX-License-Identifier: Apache-2.0 (see LICENSE)
+
+package validate
+
+import (
+	"os"
+
+	"github.com/Khan/genqlient/graphql"
+	"github.com/cartesi/rollups-node/internal/config"
+	"github.com/cartesi/rollups-node/pkg/addresses"
+	"github.com/cartesi/rollups-node/pkg/ethutil"
+	"github.com/cartesi/rollups-node/pkg/readerclient"
+	"github.com/ethereum/go-ethereum/ethclient"
+	"github.com/spf13/cobra"
+)
+
+var Cmd = &cobra.Command{
+	Use:     "validate",
+	Short:   "Validates a notice",
+	Example: examples,
+	Run:     run,
+}
+
+const examples = `# Validates notice 5 from input 6:
+cartesi-rollups-cli validate --notice-index 5 --input-index 6`
+
+var (
+	noticeIndex     int
+	inputIndex      int
+	graphqlEndpoint string
+	ethEndpoint     string
+	addressBookFile string
+)
+
+func init() {
+	Cmd.Flags().IntVar(&noticeIndex, "notice-index", 0,
+		"index of the notice")
+
+	cobra.CheckErr(Cmd.MarkFlagRequired("notice-index"))
+
+	Cmd.Flags().IntVar(&inputIndex, "input-index", 0,
+		"index of the input")
+
+	cobra.CheckErr(Cmd.MarkFlagRequired("input-index"))
+
+	Cmd.Flags().StringVar(&graphqlEndpoint, "graphql-endpoint", "http://0.0.0.0:10004/graphql",
+		"address used to connect to graphql")
+
+	Cmd.Flags().StringVar(&ethEndpoint, "eth-endpoint", "http://localhost:8545",
+		"ethereum node JSON-RPC endpoint")
+
+	Cmd.Flags().StringVar(&addressBookFile, "address-book", "",
+		"if set, load the address book from the given file; else, use test addresses")
+}
+
+func run(cmd *cobra.Command, args []string) {
+	ctx := cmd.Context()
+	graphqlClient := graphql.NewClient(graphqlEndpoint, nil)
+
+	resp, err := readerclient.GetNotice(ctx, graphqlClient, noticeIndex, inputIndex)
+	cobra.CheckErr(err)
+
+	if resp.Proof == nil {
+		config.InfoLogger.Printf("The notice has no associated proof yet.\n")
+		os.Exit(0)
+	}
+
+	client, err := ethclient.DialContext(ctx, ethEndpoint)
+	cobra.CheckErr(err)
+	config.InfoLogger.Printf("connected to %v\n", ethEndpoint)
+
+	var book *addresses.Book
+	if addressBookFile != "" {
+		book, err = addresses.GetBookFromFile(addressBookFile)
+		cobra.CheckErr(err)
+	} else {
+		book = addresses.GetTestBook()
+	}
+
+	proof := readerclient.ConvertToContractProof(resp.Proof)
+
+	config.InfoLogger.Printf("validating notice %d from input %d with address %x\n",
+		noticeIndex,
+		inputIndex,
+		book.CartesiDApp,
+	)
+	err = ethutil.ValidateNotice(ctx, client, book, resp.Payload, proof)
+	cobra.CheckErr(err)
+
+	config.InfoLogger.Printf("The notice is valid!\n")
+}

docs/cartesi-rollups-cli.md

@@ -20,4 +20,5 @@ Cartesi Rollups node.
 * [cartesi-rollups-cli read](cartesi-rollups-cli_read.md)	 - Read the node state from the GraphQL API
 * [cartesi-rollups-cli save-snapshot](cartesi-rollups-cli_save-snapshot.md)	 - Saves the testing Cartesi machine snapshot to the designated folder
 * [cartesi-rollups-cli send](cartesi-rollups-cli_send.md)	 - Send a rollups input to the Ethereum node
+* [cartesi-rollups-cli validate](cartesi-rollups-cli_validate.md)	 - Validates a notice
 

docs/cartesi-rollups-cli_validate.md

@@ -0,0 +1,30 @@
+## cartesi-rollups-cli validate
+
+Validates a notice
+
+```
+cartesi-rollups-cli validate [flags]
+```
+
+### Examples
+
+```
+# Validates notice 5 from input 6:
+cartesi-rollups-cli validate --notice-index 5 --input-index 6
+```
+
+### Options
+
+```
+      --address-book string       if set, load the address book from the given file; else, use test addresses
+      --eth-endpoint string       ethereum node JSON-RPC endpoint (default "http://localhost:8545")
+      --graphql-endpoint string   address used to connect to graphql (default "http://0.0.0.0:10004/graphql")
+  -h, --help                      help for validate
+      --input-index int           index of the input
+      --notice-index int          index of the notice
+```
+
+### SEE ALSO
+
+* [cartesi-rollups-cli](cartesi-rollups-cli.md)	 - Command line interface for Cartesi Rollups
+

pkg/ethutil/ethutil.go

@@ -107,3 +107,27 @@ func GetInputFromInputBox(
 	}
 	return it.Event, nil
 }
+
+// ValidateNotice validates the given notice for the specified Dapp.
+// It returns nil if the notice is valid and an execution-reverted error otherwise.
+func ValidateNotice(
+	ctx context.Context,
+	client *ethclient.Client,
+	book *addresses.Book,
+	notice []byte,
+	proof *contracts.Proof,
+) error {
+
+	dapp, err := contracts.NewCartesiDApp(book.CartesiDApp, client)
+	if err != nil {
+		return fmt.Errorf("failed to connect to CartesiDapp contract: %v", err)
+	}
+
+	response, err := dapp.ValidateNotice(&bind.CallOpts{Context: ctx}, notice, *proof)
+	_ = response
+	if err != nil {
+		return err
+	}
+
+	return nil
+}

pkg/readerclient/proof.go

@@ -6,6 +6,7 @@ package readerclient
 import (
 	"fmt"
 
+	"github.com/cartesi/rollups-node/pkg/contracts"
 	"github.com/ethereum/go-ethereum/common/hexutil"
 )
 
@@ -124,3 +125,36 @@ func newProof(
 
 	return &proof, err
 }
+
+func ConvertToContractProof(proof *Proof) *contracts.Proof {
+	var (
+		outputHashOutputSiblings [][32]byte
+		outputHashEpochSiblings  [][32]byte
+	)
+
+	for _, hash := range proof.OutputHashInOutputHashesSiblings {
+		outputHashOutputSiblings = append(outputHashOutputSiblings, [32]byte(hash))
+	}
+
+	for _, hash := range proof.OutputHashesInEpochSiblings {
+		outputHashEpochSiblings = append(outputHashEpochSiblings, [32]byte(hash))
+	}
+
+	outputValidityProof := contracts.OutputValidityProof{
+		InputIndexWithinEpoch:            uint64(proof.InputIndexWithinEpoch),
+		OutputIndexWithinInput:           uint64(proof.OutputIndexWithinInput),
+		OutputHashesRootHash:             [32]byte(proof.OutputHashesRootHash),
+		VouchersEpochRootHash:            [32]byte(proof.VouchersEpochRootHash),
+		NoticesEpochRootHash:             [32]byte(proof.NoticesEpochRootHash),
+		MachineStateHash:                 [32]byte(proof.MachineStateHash),
+		OutputHashInOutputHashesSiblings: outputHashOutputSiblings,
+		OutputHashesInEpochSiblings:      outputHashEpochSiblings,
+	}
+
+	contractProof := contracts.Proof{
+		Validity: outputValidityProof,
+		Context:  proof.Context,
+	}
+
+	return &contractProof
+}