[#932] adm: Rename util to helper

To avoid conflicts with `util` packages in other imports.

Signed-off-by: Anton Nikiforov <an.nikiforov@yadro.com>

cmd/frostfs-adm/internal/modules/morph/helper/util.go

@@ -0,0 +1,177 @@
+package helper
+
+import (
+	"archive/tar"
+	"compress/gzip"
+	"errors"
+	"fmt"
+	"io"
+	"os"
+	"path/filepath"
+	"strconv"
+	"strings"
+
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/config"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/cmd/frostfs-adm/internal/modules/morph/constants"
+	"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/innerring"
+	"github.com/nspcc-dev/neo-go/pkg/core/transaction"
+	"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
+	"github.com/nspcc-dev/neo-go/pkg/encoding/fixedn"
+	"github.com/nspcc-dev/neo-go/pkg/rpcclient/actor"
+	"github.com/nspcc-dev/neo-go/pkg/wallet"
+	"github.com/spf13/viper"
+)
+
+func GetAlphabetWallets(v *viper.Viper, walletDir string) ([]*wallet.Wallet, error) {
+	wallets, err := openAlphabetWallets(v, walletDir)
+	if err != nil {
+		return nil, err
+	}
+
+	if len(wallets) > constants.MaxAlphabetNodes {
+		return nil, ErrTooManyAlphabetNodes
+	}
+	return wallets, nil
+}
+
+func openAlphabetWallets(v *viper.Viper, walletDir string) ([]*wallet.Wallet, error) {
+	walletFiles, err := os.ReadDir(walletDir)
+	if err != nil {
+		return nil, fmt.Errorf("can't read alphabet wallets dir: %w", err)
+	}
+
+	var size int
+loop:
+	for i := 0; i < len(walletFiles); i++ {
+		name := innerring.GlagoliticLetter(i).String() + ".json"
+		for j := range walletFiles {
+			if walletFiles[j].Name() == name {
+				size++
+				continue loop
+			}
+		}
+		break
+	}
+	if size == 0 {
+		return nil, errors.New("alphabet wallets dir is empty (run `generate-alphabet` command first)")
+	}
+
+	wallets := make([]*wallet.Wallet, size)
+	for i := 0; i < size; i++ {
+		letter := innerring.GlagoliticLetter(i).String()
+		p := filepath.Join(walletDir, letter+".json")
+		w, err := wallet.NewWalletFromFile(p)
+		if err != nil {
+			return nil, fmt.Errorf("can't open wallet: %w", err)
+		}
+
+		password, err := config.GetPassword(v, letter)
+		if err != nil {
+			return nil, fmt.Errorf("can't fetch password: %w", err)
+		}
+
+		for i := range w.Accounts {
+			if err := w.Accounts[i].Decrypt(password, keys.NEP2ScryptParams()); err != nil {
+				return nil, fmt.Errorf("can't unlock wallet: %w", err)
+			}
+		}
+
+		wallets[i] = w
+	}
+
+	return wallets, nil
+}
+
+func NewActor(c actor.RPCActor, committeeAcc *wallet.Account) (*actor.Actor, error) {
+	return actor.New(c, []actor.SignerAccount{{
+		Signer: transaction.Signer{
+			Account: committeeAcc.Contract.ScriptHash(),
+			Scopes:  transaction.Global,
+		},
+		Account: committeeAcc,
+	}})
+}
+
+func ReadContract(ctrPath, ctrName string) (*ContractState, error) {
+	rawNef, err := os.ReadFile(filepath.Join(ctrPath, ctrName+"_contract.nef"))
+	if err != nil {
+		return nil, fmt.Errorf("can't read NEF file for %s contract: %w", ctrName, err)
+	}
+	rawManif, err := os.ReadFile(filepath.Join(ctrPath, "config.json"))
+	if err != nil {
+		return nil, fmt.Errorf("can't read manifest file for %s contract: %w", ctrName, err)
+	}
+
+	cs := &ContractState{
+		RawNEF:      rawNef,
+		RawManifest: rawManif,
+	}
+
+	return cs, cs.Parse()
+}
+
+func readContractsFromArchive(file io.Reader, names []string) (map[string]*ContractState, error) {
+	m := make(map[string]*ContractState, len(names))
+	for i := range names {
+		m[names[i]] = new(ContractState)
+	}
+
+	gr, err := gzip.NewReader(file)
+	if err != nil {
+		return nil, fmt.Errorf("contracts file must be tar.gz archive: %w", err)
+	}
+
+	r := tar.NewReader(gr)
+	for h, err := r.Next(); ; h, err = r.Next() {
+		if err != nil {
+			break
+		}
+
+		dir, _ := filepath.Split(h.Name)
+		ctrName := filepath.Base(dir)
+
+		cs, ok := m[ctrName]
+		if !ok {
+			continue
+		}
+
+		switch {
+		case strings.HasSuffix(h.Name, filepath.Join(ctrName, ctrName+"_contract.nef")):
+			cs.RawNEF, err = io.ReadAll(r)
+			if err != nil {
+				return nil, fmt.Errorf("can't read NEF file for %s contract: %w", ctrName, err)
+			}
+		case strings.HasSuffix(h.Name, "config.json"):
+			cs.RawManifest, err = io.ReadAll(r)
+			if err != nil {
+				return nil, fmt.Errorf("can't read manifest file for %s contract: %w", ctrName, err)
+			}
+		}
+		m[ctrName] = cs
+	}
+
+	for ctrName, cs := range m {
+		if cs.RawNEF == nil {
+			return nil, fmt.Errorf("NEF for %s contract wasn't found", ctrName)
+		}
+		if cs.RawManifest == nil {
+			return nil, fmt.Errorf("manifest for %s contract wasn't found", ctrName)
+		}
+	}
+	return m, nil
+}
+
+func GetAlphabetNNSDomain(i int) string {
+	return constants.AlphabetContract + strconv.FormatUint(uint64(i), 10) + ".frostfs"
+}
+
+func ParseGASAmount(s string) (fixedn.Fixed8, error) {
+	gasAmount, err := fixedn.Fixed8FromString(s)
+	if err != nil {
+		return 0, fmt.Errorf("invalid GAS amount %s: %w", s, err)
+	}
+	if gasAmount <= 0 {
+		return 0, fmt.Errorf("GAS amount must be positive (got %d)", gasAmount)
+	}
+	return gasAmount, nil
+}