frostfs-node/cmd/neofs-adm/internal/modules/morph/subnet.go

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package morph
import (
"encoding/hex"
"errors"
"fmt"
"github.com/nspcc-dev/neo-go/cli/flags"
"github.com/nspcc-dev/neo-go/cli/input"
"github.com/nspcc-dev/neo-go/pkg/core/native/nativenames"
"github.com/nspcc-dev/neo-go/pkg/core/state"
"github.com/nspcc-dev/neo-go/pkg/core/transaction"
"github.com/nspcc-dev/neo-go/pkg/crypto/hash"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
neogocli "github.com/nspcc-dev/neo-go/pkg/rpc/client"
"github.com/nspcc-dev/neo-go/pkg/rpc/response/result"
"github.com/nspcc-dev/neo-go/pkg/smartcontract"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/vm/opcode"
"github.com/nspcc-dev/neo-go/pkg/vm/stackitem"
"github.com/nspcc-dev/neo-go/pkg/wallet"
"github.com/nspcc-dev/neofs-node/cmd/neofs-adm/internal/modules/morph/internal"
"github.com/nspcc-dev/neofs-node/pkg/morph/client"
"github.com/nspcc-dev/neofs-node/pkg/util/rand"
"github.com/nspcc-dev/neofs-sdk-go/subnet"
subnetid "github.com/nspcc-dev/neofs-sdk-go/subnet/id"
"github.com/nspcc-dev/neofs-sdk-go/user"
"github.com/spf13/cobra"
"github.com/spf13/viper"
)
func viperBindFlags(cmd *cobra.Command, flags ...string) {
for i := range flags {
_ = viper.BindPFlag(flags[i], cmd.Flags().Lookup(flags[i]))
}
}
// subnet command section.
var cmdSubnet = &cobra.Command{
Use: "subnet",
Short: "NeoFS subnet management.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
endpointFlag,
)
},
}
// shared flags of cmdSubnet sub-commands.
const (
// subnet identifier
flagSubnet = "subnet"
// subnet client group ID
flagSubnetGroup = "group"
// filepath to wallet
flagSubnetWallet = "wallet"
// address in the wallet, optional
flagSubnetAddress = "address"
)
// reads wallet from the filepath configured in flagSubnetWallet flag,
// looks for address specified in flagSubnetAddress flag (uses default
// address if flag is empty) and decrypts private key.
func readSubnetKey(key *keys.PrivateKey) error {
// read wallet from file
walletPath := viper.GetString(flagSubnetWallet)
if walletPath == "" {
return errors.New("missing path to wallet")
}
w, err := wallet.NewWalletFromFile(walletPath)
if err != nil {
return fmt.Errorf("read wallet from file: %w", err)
}
// read account from the wallet
var (
addr util.Uint160
addrStr = viper.GetString(flagSubnetAddress)
)
if addrStr == "" {
addr = w.GetChangeAddress()
} else {
addr, err = flags.ParseAddress(addrStr)
if err != nil {
return fmt.Errorf("read wallet address: %w", err)
}
}
acc := w.GetAccount(addr)
if acc == nil {
return fmt.Errorf("address %s not found in %s", addrStr, walletPath)
}
// read password
pass, err := input.ReadPassword("Enter password > ")
if err != nil {
return fmt.Errorf("read password: %w", err)
}
// decrypt with just read password
err = acc.Decrypt(pass, keys.NEP2ScryptParams())
if err != nil {
return fmt.Errorf("decrypt wallet: %w", err)
}
*key = *acc.PrivateKey()
return nil
}
const (
// enable notary
flagSubnetNotary = "notary"
)
// create subnet command.
var cmdSubnetCreate = &cobra.Command{
Use: "create",
Short: "Create NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetWallet,
flagSubnetAddress,
flagSubnetNotary,
)
},
RunE: func(cmd *cobra.Command, _ []string) error {
// read private key
var key keys.PrivateKey
err := readSubnetKey(&key)
if err != nil {
return fmt.Errorf("read private key: %w", err)
}
// generate subnet ID and marshal it
var (
id subnetid.ID
num uint32
)
for {
num = rand.Uint32()
id.SetNumber(num)
if !subnetid.IsZero(id) {
break
}
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
// declare creator ID and encode it
var creator user.ID
user.IDFromKey(&creator, key.PrivateKey.PublicKey)
// fill subnet info and encode it
var info subnet.Info
info.SetID(id)
info.SetOwner(creator)
binInfo, err := info.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet info: %w", err)
}
err = invokeMethod(key, true, "put", binID, key.PublicKey().Bytes(), binInfo)
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
cmd.Printf("Create subnet request sent successfully. ID: %s.\n", &id)
return nil
},
}
// cmdSubnetRemove flags.
const (
// subnet ID to be removed
flagSubnetRemoveID = flagSubnet
)
// errZeroSubnet is returned on attempts to work with zero subnet which is virtual.
var errZeroSubnet = errors.New("zero subnet")
// remove subnet command.
var cmdSubnetRemove = &cobra.Command{
Use: "remove",
Short: "Remove NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetWallet,
flagSubnetAddress,
flagSubnetRemoveID,
)
},
RunE: func(cmd *cobra.Command, _ []string) error {
// read private key
var key keys.PrivateKey
err := readSubnetKey(&key)
if err != nil {
return fmt.Errorf("read private key: %w", err)
}
// read ID and encode it
var id subnetid.ID
err = id.UnmarshalText([]byte(viper.GetString(flagSubnetRemoveID)))
if err != nil {
return fmt.Errorf("decode ID text: %w", err)
}
if subnetid.IsZero(id) {
return errZeroSubnet
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
err = invokeMethod(key, false, "delete", binID)
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
cmd.Println("Remove subnet request sent successfully.")
return nil
},
}
// cmdSubnetGet flags.
const (
// subnet ID to be read
flagSubnetGetID = flagSubnet
)
// get subnet command.
var cmdSubnetGet = &cobra.Command{
Use: "get",
Short: "Read information about the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetGetID,
)
},
RunE: func(cmd *cobra.Command, _ []string) error {
// read ID and encode it
var id subnetid.ID
err := id.UnmarshalText([]byte(viper.GetString(flagSubnetGetID)))
if err != nil {
return fmt.Errorf("decode ID text: %w", err)
}
if subnetid.IsZero(id) {
return errZeroSubnet
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
// use random key to fetch the data
// we could use raw neo-go client to perform testInvoke
// without keys, as it is done in other commands
key, err := keys.NewPrivateKey()
if err != nil {
return fmt.Errorf("init subnet client: %w", err)
}
res, err := testInvokeMethod(*key, "get", binID)
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
if len(res) == 0 {
return errors.New("subnet does not exist")
}
data, err := client.BytesFromStackItem(res[0])
if err != nil {
return fmt.Errorf("decoding contract response: %w", err)
}
// decode info
var info subnet.Info
if err = info.Unmarshal(data); err != nil {
return fmt.Errorf("decode subnet info: %w", err)
}
// print information
var ownerID user.ID
info.ReadOwner(&ownerID)
cmd.Printf("Owner: %s\n", &ownerID)
return nil
},
}
// cmdSubnetAdmin subnet flags.
const (
// subnet ID to be managed
flagSubnetAdminSubnet = flagSubnet
// admin public key
flagSubnetAdminID = "admin"
// manage client admins instead of node ones
flagSubnetAdminClient = "client"
)
// command to manage subnet admins.
var cmdSubnetAdmin = &cobra.Command{
Use: "admin",
Short: "Manage administrators of the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, args []string) {
viperBindFlags(cmd,
flagSubnetWallet,
flagSubnetAddress,
flagSubnetAdminSubnet,
flagSubnetAdminID,
)
},
}
// cmdSubnetAdminAdd flags.
const (
// client group ID
flagSubnetAdminAddGroup = flagSubnetGroup
)
// common executor cmdSubnetAdminAdd and cmdSubnetAdminRemove commands.
func manageSubnetAdmins(cmd *cobra.Command, rm bool) error {
// read private key
var key keys.PrivateKey
err := readSubnetKey(&key)
if err != nil {
return fmt.Errorf("read private key: %w", err)
}
// read ID and encode it
var id subnetid.ID
err = id.UnmarshalText([]byte(viper.GetString(flagSubnetAdminSubnet)))
if err != nil {
return fmt.Errorf("decode ID text: %w", err)
}
if subnetid.IsZero(id) {
return errZeroSubnet
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
// read admin key and decode it
binAdminKey, err := hex.DecodeString(viper.GetString(flagSubnetAdminID))
if err != nil {
return fmt.Errorf("decode admin key text: %w", err)
}
var pubkey keys.PublicKey
if err = pubkey.DecodeBytes(binAdminKey); err != nil {
return fmt.Errorf("admin key format: %w", err)
}
// prepare call parameters
prm := make([]interface{}, 0, 3)
prm = append(prm, binID)
var method string
if viper.GetBool(flagSubnetAdminClient) {
// read group ID and encode it
var groupID internal.SubnetClientGroupID
err = groupID.UnmarshalText([]byte(viper.GetString(flagSubnetAdminAddGroup)))
if err != nil {
return fmt.Errorf("decode group ID text: %w", err)
}
binGroupID, err := groupID.Marshal()
if err != nil {
return fmt.Errorf("marshal group ID: %w", err)
}
if rm {
method = "removeClientAdmin"
} else {
method = "addClientAdmin"
}
prm = append(prm, binGroupID)
} else {
if rm {
method = "removeNodeAdmin"
} else {
method = "addNodeAdmin"
}
}
prm = append(prm, binAdminKey)
err = invokeMethod(key, false, method, prm...)
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
var op string
if rm {
op = "Remove"
} else {
op = "Add"
}
cmd.Printf("%s admin request sent successfully.\n", op)
return nil
}
// command to add subnet admin.
var cmdSubnetAdminAdd = &cobra.Command{
Use: "add",
Short: "Add admin to the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetAdminAddGroup,
flagSubnetAdminClient,
)
},
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetAdmins(cmd, false)
},
}
// command to remove subnet admin.
var cmdSubnetAdminRemove = &cobra.Command{
Use: "remove",
Short: "Remove admin of the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetAdminClient,
)
},
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetAdmins(cmd, true)
},
}
// cmdSubnetClient flags.
const (
// ID of the subnet to be managed
flagSubnetClientSubnet = flagSubnet
// client's NeoFS ID
flagSubnetClientID = flagSubnetAdminClient
// ID of the subnet client group
flagSubnetClientGroup = flagSubnetGroup
)
// command to manage subnet clients.
var cmdSubnetClient = &cobra.Command{
Use: "client",
Short: "Manage clients of the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetWallet,
flagSubnetAddress,
flagSubnetClientSubnet,
flagSubnetClientID,
flagSubnetClientGroup,
)
},
}
// common executor cmdSubnetClientAdd and cmdSubnetClientRemove commands.
func manageSubnetClients(cmd *cobra.Command, rm bool) error {
// read private key
var key keys.PrivateKey
err := readSubnetKey(&key)
if err != nil {
return fmt.Errorf("read private key: %w", err)
}
// read ID and encode it
var id subnetid.ID
err = id.UnmarshalText([]byte(viper.GetString(flagSubnetClientSubnet)))
if err != nil {
return fmt.Errorf("decode ID text: %w", err)
}
if subnetid.IsZero(id) {
return errZeroSubnet
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
// read client ID and encode it
var clientID user.ID
err = clientID.DecodeString(viper.GetString(flagSubnetClientID))
if err != nil {
return fmt.Errorf("decode client ID text: %w", err)
}
// read group ID and encode it
var groupID internal.SubnetClientGroupID
err = groupID.UnmarshalText([]byte(viper.GetString(flagSubnetAdminAddGroup)))
if err != nil {
return fmt.Errorf("decode group ID text: %w", err)
}
binGroupID, err := groupID.Marshal()
if err != nil {
return fmt.Errorf("marshal group ID: %w", err)
}
var method string
if rm {
method = "removeUser"
} else {
method = "addUser"
}
err = invokeMethod(key, false, method, binID, binGroupID, clientID.WalletBytes())
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
var op string
if rm {
op = "Remove"
} else {
op = "Add"
}
cmd.Printf("%s client request sent successfully.\n", op)
return nil
}
// command to add subnet client.
var cmdSubnetClientAdd = &cobra.Command{
Use: "add",
Short: "Add client to the NeoFS subnet.",
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetClients(cmd, false)
},
}
// command to remove subnet client.
var cmdSubnetClientRemove = &cobra.Command{
Use: "remove",
Short: "Remove client of the NeoFS subnet.",
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetClients(cmd, true)
},
}
// cmdSubnetNode flags.
const (
// node ID
flagSubnetNode = "node"
// ID of the subnet to be managed
flagSubnetNodeSubnet = flagSubnet
)
// common executor cmdSubnetNodeAdd and cmdSubnetNodeRemove commands.
func manageSubnetNodes(cmd *cobra.Command, rm bool) error {
// read private key
var key keys.PrivateKey
err := readSubnetKey(&key)
if err != nil {
return fmt.Errorf("read private key: %w", err)
}
// read ID and encode it
var id subnetid.ID
err = id.UnmarshalText([]byte(viper.GetString(flagSubnetNodeSubnet)))
if err != nil {
return fmt.Errorf("decode ID text: %w", err)
}
if subnetid.IsZero(id) {
return errZeroSubnet
}
binID, err := id.Marshal()
if err != nil {
return fmt.Errorf("marshal subnet ID: %w", err)
}
// read node ID and encode it
binNodeID, err := hex.DecodeString(viper.GetString(flagSubnetNode))
if err != nil {
return fmt.Errorf("decode node ID text: %w", err)
}
var pubkey keys.PublicKey
if err = pubkey.DecodeBytes(binNodeID); err != nil {
return fmt.Errorf("node ID format: %w", err)
}
var method string
if rm {
method = "removeNode"
} else {
method = "addNode"
}
err = invokeMethod(key, false, method, binID, binNodeID)
if err != nil {
return fmt.Errorf("morph invocation: %w", err)
}
var op string
if rm {
op = "Remove"
} else {
op = "Add"
}
cmd.Printf("%s node request sent successfully.\n", op)
return nil
}
// command to manage subnet nodes.
var cmdSubnetNode = &cobra.Command{
Use: "node",
Short: "Manage nodes of the NeoFS subnet.",
PreRun: func(cmd *cobra.Command, _ []string) {
viperBindFlags(cmd,
flagSubnetWallet,
flagSubnetNode,
flagSubnetNodeSubnet,
)
},
}
// command to add subnet node.
var cmdSubnetNodeAdd = &cobra.Command{
Use: "add",
Short: "Add node to the NeoFS subnet.",
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetNodes(cmd, false)
},
}
// command to remove subnet node.
var cmdSubnetNodeRemove = &cobra.Command{
Use: "remove",
Short: "Remove node from the NeoFS subnet.",
RunE: func(cmd *cobra.Command, _ []string) error {
return manageSubnetNodes(cmd, true)
},
}
// returns function which calls PreRun on parent if it exists.
func inheritPreRun(preRun func(*cobra.Command, []string)) func(*cobra.Command, []string) {
return func(cmd *cobra.Command, args []string) {
par := cmd.Parent()
if par != nil && par.PreRun != nil {
par.PreRun(par, args)
}
if preRun != nil {
preRun(cmd, args)
}
}
}
// inherits PreRun function of parent command in all sub-commands and
// adds them to the parent.
func addCommandInheritPreRun(par *cobra.Command, subs ...*cobra.Command) {
for _, sub := range subs {
sub.PreRun = inheritPreRun(sub.PreRun)
}
par.AddCommand(subs...)
}
// registers flags and binds sub-commands for subnet commands.
func init() {
cmdSubnetCreate.Flags().Bool(flagSubnetNotary, false, "Flag to create subnet in notary environment")
cmdSubnetCreate.Flags().StringP(flagSubnetWallet, "w", "", "Path to file with wallet")
_ = cmdSubnetCreate.MarkFlagRequired(flagSubnetWallet)
cmdSubnetCreate.Flags().StringP(flagSubnetAddress, "a", "", "Address in the wallet, optional")
// get subnet flags
cmdSubnetGet.Flags().String(flagSubnetGetID, "", "ID of the subnet to read")
_ = cmdSubnetAdminAdd.MarkFlagRequired(flagSubnetGetID)
// remove subnet flags
cmdSubnetRemove.Flags().String(flagSubnetRemoveID, "", "ID of the subnet to remove")
_ = cmdSubnetRemove.MarkFlagRequired(flagSubnetRemoveID)
cmdSubnetRemove.Flags().StringP(flagSubnetWallet, "w", "", "Path to file with wallet")
_ = cmdSubnetRemove.MarkFlagRequired(flagSubnetWallet)
cmdSubnetRemove.Flags().StringP(flagSubnetAddress, "a", "", "Address in the wallet, optional")
// subnet administer flags
adminFlags := cmdSubnetAdmin.PersistentFlags()
adminFlags.String(flagSubnetAdminSubnet, "", "ID of the subnet to manage administrators")
_ = cmdSubnetAdmin.MarkFlagRequired(flagSubnetAdminSubnet)
adminFlags.String(flagSubnetAdminID, "", "Hex-encoded public key of the admin")
_ = cmdSubnetAdmin.MarkFlagRequired(flagSubnetAdminID)
adminFlags.StringP(flagSubnetWallet, "w", "", "Path to file with wallet")
_ = cmdSubnetAdmin.MarkFlagRequired(flagSubnetWallet)
adminFlags.StringP(flagSubnetAddress, "a", "", "Address in the wallet, optional")
// add admin flags
cmdSubnetAdminAddFlags := cmdSubnetAdminAdd.Flags()
cmdSubnetAdminAddFlags.String(flagSubnetAdminAddGroup, "", fmt.Sprintf(
"Client group ID in text format (needed with --%s only)", flagSubnetAdminClient))
cmdSubnetAdminAddFlags.Bool(flagSubnetAdminClient, false, "Add client admin instead of node one")
// remove admin flags
cmdSubnetAdminRemoveFlags := cmdSubnetAdminRemove.Flags()
cmdSubnetAdminRemoveFlags.Bool(flagSubnetAdminClient, false, "Remove client admin instead of node one")
// client managements flags
clientFlags := cmdSubnetClient.PersistentFlags()
clientFlags.String(flagSubnetClientSubnet, "", "ID of the subnet to be managed")
_ = cmdSubnetClient.MarkFlagRequired(flagSubnetClientSubnet)
clientFlags.String(flagSubnetClientGroup, "", "ID of the client group to work with")
_ = cmdSubnetClient.MarkFlagRequired(flagSubnetClientGroup)
clientFlags.String(flagSubnetClientID, "", "Client's user ID in NeoFS system in text format")
_ = cmdSubnetClient.MarkFlagRequired(flagSubnetClientID)
clientFlags.StringP(flagSubnetWallet, "w", "", "Path to file with wallet")
_ = cmdSubnetClient.MarkFlagRequired(flagSubnetWallet)
clientFlags.StringP(flagSubnetAddress, "a", "", "Address in the wallet, optional")
// add all admin managing commands to corresponding command section
addCommandInheritPreRun(cmdSubnetAdmin,
cmdSubnetAdminAdd,
cmdSubnetAdminRemove,
)
// add all client managing commands to corresponding command section
addCommandInheritPreRun(cmdSubnetClient,
cmdSubnetClientAdd,
cmdSubnetClientRemove,
)
// subnet node flags
nodeFlags := cmdSubnetNode.PersistentFlags()
nodeFlags.StringP(flagSubnetWallet, "w", "", "Path to file with wallet")
_ = cmdSubnetNode.MarkFlagRequired(flagSubnetWallet)
nodeFlags.String(flagSubnetNode, "", "Hex-encoded public key of the node")
_ = cmdSubnetNode.MarkFlagRequired(flagSubnetNode)
nodeFlags.String(flagSubnetNodeSubnet, "", "ID of the subnet to manage nodes")
_ = cmdSubnetNode.MarkFlagRequired(flagSubnetNodeSubnet)
// add all node managing commands to corresponding command section
addCommandInheritPreRun(cmdSubnetNode,
cmdSubnetNodeAdd,
cmdSubnetNodeRemove,
)
// subnet global flags
cmdSubnetFlags := cmdSubnet.PersistentFlags()
cmdSubnetFlags.StringP(endpointFlag, "r", "", "N3 RPC node endpoint")
_ = cmdSubnet.MarkFlagRequired(endpointFlag)
// add all subnet commands to corresponding command section
addCommandInheritPreRun(cmdSubnet,
cmdSubnetCreate,
cmdSubnetRemove,
cmdSubnetGet,
cmdSubnetAdmin,
cmdSubnetClient,
cmdSubnetNode,
)
}
func testInvokeMethod(key keys.PrivateKey, method string, args ...interface{}) ([]stackitem.Item, error) {
c, err := getN3Client(viper.GetViper())
if err != nil {
return nil, fmt.Errorf("morph client creation: %w", err)
}
nnsCs, err := c.GetContractStateByID(1)
if err != nil {
return nil, fmt.Errorf("NNS contract resolving: %w", err)
}
subnetHash, err := nnsResolveHash(c, nnsCs.Hash, subnetContract+".neofs")
if err != nil {
return nil, fmt.Errorf("subnet hash resolving: %w", err)
}
cosigner := []transaction.Signer{
{
Account: key.PublicKey().GetScriptHash(),
Scopes: transaction.Global,
},
}
res, err := invokeFunction(c, subnetHash, method, args, cosigner)
if err != nil {
return nil, fmt.Errorf("invocation parameters prepararion: %w", err)
}
err = checkInvocationResults(res)
if err != nil {
return nil, err
}
return res.Stack, nil
}
func invokeMethod(key keys.PrivateKey, tryNotary bool, method string, args ...interface{}) error {
c, err := getN3Client(viper.GetViper())
if err != nil {
return fmt.Errorf("morph client creation: %w", err)
}
if tryNotary {
cc, err := c.GetNativeContracts()
if err != nil {
return fmt.Errorf("native hashes: %w", err)
}
var notary bool
var notaryHash util.Uint160
for _, c := range cc {
if c.Manifest.Name == nativenames.Notary {
notary = len(c.UpdateHistory) > 0
notaryHash = c.Hash
break
}
}
if notary {
err = invokeNotary(c, key, method, notaryHash, args...)
if err != nil {
return fmt.Errorf("notary invocation: %w", err)
}
return nil
}
}
err = invokeNonNotary(c, key, method, args...)
if err != nil {
return fmt.Errorf("non-notary invocation: %w", err)
}
return nil
}
func invokeNonNotary(c Client, key keys.PrivateKey, method string, args ...interface{}) error {
nnsCs, err := c.GetContractStateByID(1)
if err != nil {
return fmt.Errorf("NNS contract resolving: %w", err)
}
subnetHash, err := nnsResolveHash(c, nnsCs.Hash, subnetContract+".neofs")
if err != nil {
return fmt.Errorf("subnet hash resolving: %w", err)
}
acc := wallet.NewAccountFromPrivateKey(&key)
cosigner := []transaction.Signer{
{
Account: key.PublicKey().GetScriptHash(),
Scopes: transaction.Global,
},
}
cosignerAcc := []neogocli.SignerAccount{
{
Signer: cosigner[0],
Account: acc,
},
}
test, err := invokeFunction(c, subnetHash, method, args, cosigner)
if err != nil {
return fmt.Errorf("test invocation: %w", err)
}
err = checkInvocationResults(test)
if err != nil {
return err
}
_, err = c.SignAndPushInvocationTx(test.Script, acc, test.GasConsumed, 0, cosignerAcc)
if err != nil {
return fmt.Errorf("sending transaction: %w", err)
}
return nil
}
func invokeNotary(c Client, key keys.PrivateKey, method string, notaryHash util.Uint160, args ...interface{}) error {
nnsCs, err := c.GetContractStateByID(1)
if err != nil {
return fmt.Errorf("NNS contract resolving: %w", err)
}
subnetHash, err := nnsResolveHash(c, nnsCs.Hash, subnetContract+".neofs")
if err != nil {
return fmt.Errorf("subnet hash resolving: %w", err)
}
alphabet, err := c.GetCommittee()
if err != nil {
return fmt.Errorf("alphabet list: %w", err)
}
multisigScript, err := smartcontract.CreateDefaultMultiSigRedeemScript(alphabet)
if err != nil {
return fmt.Errorf("alphabet multi-signature script: %w", err)
}
cosigners, err := notaryCosigners(c, notaryHash, nnsCs, key, hash.Hash160(multisigScript))
if err != nil {
return fmt.Errorf("cosigners collecting: %w", err)
}
// make test invocation of the method
test, err := invokeFunction(c, subnetHash, method, args, cosigners)
if err != nil {
return fmt.Errorf("test invocation: %w", err)
}
err = checkInvocationResults(test)
if err != nil {
return err
}
multisigAccount := &wallet.Account{
Contract: &wallet.Contract{
Script: multisigScript,
},
}
bc, err := c.GetBlockCount()
if err != nil {
return fmt.Errorf("blockchain height: %w", err)
}
signersNumber := uint8(smartcontract.GetDefaultHonestNodeCount(len(alphabet)) + 1) // alphabet multisig + key signature
// notaryRequestValidity is number of blocks during
// witch notary request is considered valid
const notaryRequestValidity = 100
mainTx := &transaction.Transaction{
Nonce: rand.Uint32(),
SystemFee: test.GasConsumed,
ValidUntilBlock: bc + notaryRequestValidity,
Script: test.Script,
Attributes: []transaction.Attribute{
{
Type: transaction.NotaryAssistedT,
Value: &transaction.NotaryAssisted{NKeys: signersNumber},
},
},
Signers: cosigners,
}
notaryFee, err := c.CalculateNotaryFee(signersNumber)
if err != nil {
return err
}
acc := wallet.NewAccountFromPrivateKey(&key)
aa := notaryAccounts(multisigAccount, acc)
err = c.AddNetworkFee(mainTx, notaryFee, aa...)
if err != nil {
return fmt.Errorf("notary network fee adding: %w", err)
}
mainTx.Scripts = notaryWitnesses(c, multisigAccount, acc, mainTx)
_, err = c.SignAndPushP2PNotaryRequest(mainTx,
[]byte{byte(opcode.RET)},
-1,
0,
40,
acc)
if err != nil {
return fmt.Errorf("sending notary request: %w", err)
}
return nil
}
func notaryCosigners(c Client, notaryHash util.Uint160, nnsCs *state.Contract,
key keys.PrivateKey, alphabetAccount util.Uint160) ([]transaction.Signer, error) {
proxyHash, err := nnsResolveHash(c, nnsCs.Hash, proxyContract+".neofs")
if err != nil {
return nil, fmt.Errorf("proxy hash resolving: %w", err)
}
return []transaction.Signer{
{
Account: proxyHash,
Scopes: transaction.None,
},
{
Account: alphabetAccount,
Scopes: transaction.Global,
},
{
Account: hash.Hash160(key.PublicKey().GetVerificationScript()),
Scopes: transaction.Global,
},
{
Account: notaryHash,
Scopes: transaction.None,
},
}, nil
}
func notaryAccounts(alphabet, acc *wallet.Account) []*wallet.Account {
return []*wallet.Account{
// proxy
{
Contract: &wallet.Contract{
Deployed: true,
},
},
alphabet,
// caller's account
acc,
// last one is a placeholder for notary contract account
{
Contract: &wallet.Contract{},
},
}
}
func notaryWitnesses(c Client, alphabet, acc *wallet.Account, tx *transaction.Transaction) []transaction.Witness {
ww := make([]transaction.Witness, 0, 4)
// empty proxy contract witness
ww = append(ww, transaction.Witness{
InvocationScript: []byte{},
VerificationScript: []byte{},
})
// alphabet multi-address witness
ww = append(ww, transaction.Witness{
InvocationScript: append(
[]byte{byte(opcode.PUSHDATA1), 64},
make([]byte, 64)...,
),
VerificationScript: alphabet.GetVerificationScript(),
})
magicNumber, _ := c.GetNetwork()
// caller's witness
ww = append(ww, transaction.Witness{
InvocationScript: append(
[]byte{byte(opcode.PUSHDATA1), 64},
acc.PrivateKey().SignHashable(uint32(magicNumber), tx)...),
VerificationScript: acc.GetVerificationScript(),
})
// notary contract witness
ww = append(ww, transaction.Witness{
InvocationScript: append(
[]byte{byte(opcode.PUSHDATA1), 64},
make([]byte, 64)...,
),
VerificationScript: []byte{},
})
return ww
}
func checkInvocationResults(res *result.Invoke) error {
if res.State != "HALT" {
return fmt.Errorf("test invocation state: %s, exception %s: ", res.State, res.FaultException)
}
if len(res.Script) == 0 {
return errors.New("empty invocation script")
}
return nil
}