frostfs-s3-gw/internal/frostfs/frostfsid/frostfsid.go

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package frostfsid
import (
"context"
"fmt"
"strings"
"git.frostfs.info/TrueCloudLab/frostfs-contract/frostfsid/client"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/middleware"
"git.frostfs.info/TrueCloudLab/frostfs-s3-gw/authmate"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/ns"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
"github.com/nspcc-dev/neo-go/pkg/rpcclient"
"github.com/nspcc-dev/neo-go/pkg/util"
"github.com/nspcc-dev/neo-go/pkg/wallet"
)
type FrostFSID struct {
cli *client.Client
}
type Config struct {
// RPCAddress is an endpoint to connect to neo rpc.
RPCAddress string
// Contract is hash of contract or its name in NNS.
Contract string
// Key is used to interact with frostfsid contract.
// If this is nil than random key will be generated.
Key *keys.PrivateKey
}
var (
_ middleware.FrostFSID = (*FrostFSID)(nil)
_ authmate.FrostFSID = (*FrostFSID)(nil)
)
// New creates new FrostfsID contract wrapper that implements auth.FrostFSID interface.
func New(ctx context.Context, cfg Config) (*FrostFSID, error) {
contractHash, err := fetchContractHash(cfg)
if err != nil {
return nil, fmt.Errorf("resolve frostfs contract hash: %w", err)
}
key := cfg.Key
if key == nil {
if key, err = keys.NewPrivateKey(); err != nil {
return nil, fmt.Errorf("generate anon private key for frostfsid: %w", err)
}
}
rpcCli, err := rpcclient.New(ctx, cfg.RPCAddress, rpcclient.Options{})
if err != nil {
return nil, fmt.Errorf("init rpc client: %w", err)
}
cli, err := client.New(rpcCli, wallet.NewAccountFromPrivateKey(key), contractHash, nil)
if err != nil {
return nil, fmt.Errorf("init frostfsid client: %w", err)
}
return &FrostFSID{
cli: cli,
}, nil
}
func (f *FrostFSID) ValidatePublicKey(key *keys.PublicKey) error {
_, err := f.cli.GetSubjectByKey(key)
return err
}
func (f *FrostFSID) RegisterPublicKey(key *keys.PublicKey) error {
_, err := f.cli.Wait(f.cli.CreateSubject(key))
if err != nil && !strings.Contains(err.Error(), "subject already exists") {
return err
}
return nil
}
func fetchContractHash(cfg Config) (util.Uint160, error) {
if hash, err := util.Uint160DecodeStringLE(cfg.Contract); err == nil {
return hash, nil
}
splitName := strings.Split(cfg.Contract, ".")
if len(splitName) != 2 {
return util.Uint160{}, fmt.Errorf("invalid contract name: '%s'", cfg.Contract)
}
var domain container.Domain
domain.SetName(splitName[0])
domain.SetZone(splitName[1])
var nns ns.NNS
if err := nns.Dial(cfg.RPCAddress); err != nil {
return util.Uint160{}, fmt.Errorf("dial nns %s: %w", cfg.RPCAddress, err)
}
return nns.ResolveContractHash(domain)
}