From 9a1a89d98c1b4bb08806b79483da05fce7e6eb8c Mon Sep 17 00:00:00 2001
From: Aayush <arajasek94@gmail.com>
Date: Sat, 12 Mar 2022 18:11:10 -0500
Subject: [PATCH] Shed: Add a tool to check UTF-8 validity of labels

---
 cmd/lotus-shed/deal-label.go | 118 +++++++++++++++++++++++++++++++++++
 cmd/lotus-shed/main.go       |   1 +
 2 files changed, 119 insertions(+)
 create mode 100644 cmd/lotus-shed/deal-label.go

diff --git a/cmd/lotus-shed/deal-label.go b/cmd/lotus-shed/deal-label.go
new file mode 100644
index 000000000..483415987
--- /dev/null
+++ b/cmd/lotus-shed/deal-label.go
@@ -0,0 +1,118 @@
+package main
+
+import (
+	"context"
+	"fmt"
+	"io"
+	"unicode/utf8"
+
+	"github.com/filecoin-project/lotus/chain/actors/builtin/market"
+
+	"github.com/filecoin-project/lotus/chain/consensus/filcns"
+
+	"github.com/filecoin-project/go-state-types/abi"
+	"github.com/filecoin-project/lotus/chain/state"
+	"github.com/filecoin-project/lotus/chain/store"
+	"github.com/filecoin-project/lotus/node/repo"
+	"github.com/filecoin-project/specs-actors/v4/actors/util/adt"
+	"github.com/ipfs/go-cid"
+	cbor "github.com/ipfs/go-ipld-cbor"
+	"github.com/urfave/cli/v2"
+)
+
+var dealLabelCmd = &cli.Command{
+	Name:  "deal-label",
+	Usage: "Scrape state to report on how many deals have non UTF-8 labels",
+	Flags: []cli.Flag{
+		&cli.StringFlag{
+			Name:  "repo",
+			Value: "~/.lotus",
+		},
+	},
+	Action: func(cctx *cli.Context) error {
+		ctx := context.TODO()
+
+		if !cctx.Args().Present() {
+			return fmt.Errorf("must pass state root")
+		}
+
+		sroot, err := cid.Decode(cctx.Args().First())
+		if err != nil {
+			return fmt.Errorf("failed to parse input: %w", err)
+		}
+
+		fsrepo, err := repo.NewFS(cctx.String("repo"))
+		if err != nil {
+			return err
+		}
+
+		lkrepo, err := fsrepo.Lock(repo.FullNode)
+		if err != nil {
+			return err
+		}
+
+		defer lkrepo.Close() //nolint:errcheck
+
+		bs, err := lkrepo.Blockstore(ctx, repo.UniversalBlockstore)
+		if err != nil {
+			return fmt.Errorf("failed to open blockstore: %w", err)
+		}
+
+		defer func() {
+			if c, ok := bs.(io.Closer); ok {
+				if err := c.Close(); err != nil {
+					log.Warnf("failed to close blockstore: %s", err)
+				}
+			}
+		}()
+
+		mds, err := lkrepo.Datastore(context.Background(), "/metadata")
+		if err != nil {
+			return err
+		}
+
+		cs := store.NewChainStore(bs, bs, mds, filcns.Weight, nil)
+		defer cs.Close() //nolint:errcheck
+
+		cst := cbor.NewCborStore(bs)
+		store := adt.WrapStore(ctx, cst)
+
+		tree, err := state.LoadStateTree(cst, sroot)
+		if err != nil {
+			return err
+		}
+
+		ma, err := tree.GetActor(market.Address)
+		if err != nil {
+			return err
+		}
+
+		ms, err := market.Load(store, ma)
+		if err != nil {
+			return err
+		}
+
+		ps, err := ms.Proposals()
+		if err != nil {
+			return err
+		}
+
+		var deals []abi.DealID
+		if err = ps.ForEach(func(id abi.DealID, dp market.DealProposal) error {
+			if !utf8.Valid([]byte(dp.Label)) {
+				deals = append(deals, id)
+			}
+
+			return nil
+		}); err != nil {
+			return err
+		}
+
+		fmt.Println("there are ", len(deals), " bad labels")
+		for _, d := range deals {
+			fmt.Print(d, " ")
+		}
+
+		return nil
+	},
+}
diff --git a/cmd/lotus-shed/main.go b/cmd/lotus-shed/main.go
index c1facfe7b..cfbc73a14 100644
--- a/cmd/lotus-shed/main.go
+++ b/cmd/lotus-shed/main.go
@@ -22,6 +22,7 @@ func main() {
 		bitFieldCmd,
 		cronWcCmd,
 		frozenMinersCmd,
+		dealLabelCmd,
 		keyinfoCmd,
 		jwtCmd,
 		noncefix,