[#738] neofs-adm: Add command to dump NeoFS network config

Signed-off-by: Alex Vanin <alexey@nspcc.ru>

cmd/neofs-adm/internal/modules/morph/dump.go

@@ -2,14 +2,21 @@ package morph
 
 import (
 	"bytes"
+	"encoding/binary"
+	"encoding/hex"
 	"errors"
 	"fmt"
 	"text/tabwriter"
 
 	nns "github.com/nspcc-dev/neo-go/examples/nft-nd-nns"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
 	"github.com/nspcc-dev/neo-go/pkg/io"
+	"github.com/nspcc-dev/neo-go/pkg/smartcontract"
 	"github.com/nspcc-dev/neo-go/pkg/smartcontract/callflag"
+	"github.com/nspcc-dev/neo-go/pkg/util"
+	"github.com/nspcc-dev/neo-go/pkg/vm"
 	"github.com/nspcc-dev/neo-go/pkg/vm/emit"
+	"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
 	"github.com/spf13/cobra"
 	"github.com/spf13/viper"
 )
@@ -94,3 +101,86 @@ func dumpContractHashes(cmd *cobra.Command, _ []string) error {
 
 	return nil
 }
+
+func dumpNetworkConfig(cmd *cobra.Command, _ []string) error {
+	wCtx, err := newInitializeContext(cmd, viper.GetViper())
+	if err != nil {
+		return fmt.Errorf("can't to initialize context: %w", err)
+	}
+
+	cs, err := wCtx.Client.GetContractStateByID(1)
+	if err != nil {
+		return fmt.Errorf("can't get NNS contract info: %w", err)
+	}
+
+	res, err := wCtx.Client.InvokeFunction(cs.Hash, "resolve", []smartcontract.Parameter{
+		{Type: smartcontract.StringType, Value: netmapContract + ".neofs"},
+		{Type: smartcontract.IntegerType, Value: int64(nns.TXT)},
+	}, nil)
+	if err != nil {
+		return fmt.Errorf("can't get netmap contract hash: %w", err)
+	}
+	if len(res.Stack) == 0 {
+		return errors.New("empty response from NNS")
+	}
+
+	var nmHash util.Uint160
+	bs, err := res.Stack[0].TryBytes()
+	if err == nil {
+		nmHash, err = util.Uint160DecodeStringLE(string(bs))
+	}
+	if err != nil {
+		return fmt.Errorf("invalid response from NNS contract: %w", err)
+	}
+
+	res, err = wCtx.Client.InvokeFunction(nmHash, "listConfig", []smartcontract.Parameter{}, []transaction.Signer{{
+		Account: wCtx.CommitteeAcc.Contract.ScriptHash(),
+		Scopes:  transaction.Global,
+	}})
+	if err != nil || res.State != vm.HaltState.String() || len(res.Stack) == 0 {
+		return errors.New("can't fetch list of network config keys from the netmap contract")
+	}
+
+	arr, ok := res.Stack[0].Value().([]stackitem.Item)
+	if !ok {
+		return errors.New("invalid ListConfig response from netmap contract")
+	}
+
+	buf := bytes.NewBuffer(nil)
+	tw := tabwriter.NewWriter(buf, 0, 2, 2, ' ', 0)
+
+	for _, param := range arr {
+		tuple, ok := param.Value().([]stackitem.Item)
+		if !ok || len(tuple) != 2 {
+			return errors.New("invalid ListConfig response from netmap contract")
+		}
+
+		k, err := tuple[0].TryBytes()
+		if err != nil {
+			return errors.New("invalid config key from netmap contract")
+		}
+
+		v, err := tuple[1].TryBytes()
+		if err != nil {
+			return errors.New("invalid config value from netmap contract")
+		}
+
+		switch string(k) {
+		case "AuditFee", "BasicIncomeRate", "ContainerFee", "EigenTrustIterations",
+			"EpochDuration", "InnerRingCandidateFee", "MaxObjectSize", "WithdrawFee":
+			nbuf := make([]byte, 8)
+			copy(nbuf[:], v)
+			n := binary.LittleEndian.Uint64(nbuf)
+			_, _ = tw.Write([]byte(fmt.Sprintf("%s:\t%d (int)\n", k, n)))
+		case "EigenTrustAlpha":
+			_, _ = tw.Write([]byte(fmt.Sprintf("%s:\t%s (str)\n", k, v)))
+		default:
+			_, _ = tw.Write([]byte(fmt.Sprintf("%s:\t%s (hex)\n", k, hex.EncodeToString(v))))
+		}
+	}
+
+	_ = tw.Flush()
+	cmd.Print(buf.String())
+
+	return nil
+}