package tokens import ( "context" "errors" "fmt" "strconv" "time" "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/api/cache" "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/creds/accessbox" "git.frostfs.info/TrueCloudLab/frostfs-s3-gw/internal/logs" "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client" cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id" "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object" oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id" "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user" "github.com/nspcc-dev/neo-go/pkg/crypto/keys" "go.uber.org/zap" ) type ( // Credentials is a bearer token get/put interface. Credentials interface { GetBox(context.Context, oid.Address) (*accessbox.Box, []object.Attribute, error) Put(context.Context, cid.ID, CredentialsParam) (oid.Address, error) Update(context.Context, oid.Address, CredentialsParam) (oid.Address, error) } CredentialsParam struct { OwnerID user.ID AccessBox *accessbox.AccessBox Expiration uint64 Keys keys.PublicKeys CustomAttributes []object.Attribute } cred struct { key *keys.PrivateKey frostFS FrostFS cache *cache.AccessBoxCache removingCheckDuration time.Duration log *zap.Logger } Config struct { FrostFS FrostFS Key *keys.PrivateKey CacheConfig *cache.Config RemovingCheckAfterDurations time.Duration } ) // PrmObjectCreate groups parameters of objects created by credential tool. type PrmObjectCreate struct { // FrostFS identifier of the object creator. Creator user.ID // FrostFS container to store the object. Container cid.ID // File path. Filepath string // Optional. // If provided cred object will be created using crdt approach. NewVersionFor *oid.ID // Last FrostFS epoch of the object lifetime. ExpirationEpoch uint64 // Object payload. Payload []byte // CustomAttributes are additional user provided attributes for box object. CustomAttributes []object.Attribute } // FrostFS represents virtual connection to FrostFS network. type FrostFS interface { // CreateObject creates and saves a parameterized object in the specified // FrostFS container from a specific user. It sets 'Timestamp' attribute to the current time. // It returns the ID of the saved object. // // It returns exactly one non-nil value. It returns any error encountered which // prevented the object from being created. CreateObject(context.Context, PrmObjectCreate) (oid.ID, error) // GetCredsObject gets the credential object from FrostFS network. // It uses search by system name and select using CRDT 2PSet. In case of absence CRDT header // it heads object by address. // // It returns exactly one non-nil value. It returns any error encountered which // prevented the object payload from being read. // Object must contain full payload. GetCredsObject(context.Context, oid.Address) (*object.Object, error) } var ( // ErrEmptyPublicKeys is returned when no HCS keys are provided. ErrEmptyPublicKeys = errors.New("HCS public keys could not be empty") // ErrEmptyBearerToken is returned when no bearer token is provided. ErrEmptyBearerToken = errors.New("Bearer token could not be empty") ) var _ Credentials = (*cred)(nil) // New creates a new Credentials instance using the given cli and key. func New(cfg Config) Credentials { return &cred{ frostFS: cfg.FrostFS, key: cfg.Key, cache: cache.NewAccessBoxCache(cfg.CacheConfig), removingCheckDuration: cfg.RemovingCheckAfterDurations, log: cfg.CacheConfig.Logger, } } func (c *cred) GetBox(ctx context.Context, addr oid.Address) (*accessbox.Box, []object.Attribute, error) { cachedBoxValue := c.cache.Get(addr) if cachedBoxValue != nil { return c.checkIfCredentialsAreRemoved(ctx, addr, cachedBoxValue) } box, attrs, err := c.getAccessBox(ctx, addr) if err != nil { return nil, nil, fmt.Errorf("get access box: %w", err) } cachedBox, err := box.GetBox(c.key) if err != nil { return nil, nil, fmt.Errorf("get gate box: %w", err) } c.putBoxToCache(addr, cachedBox, attrs) return cachedBox, attrs, nil } func (c *cred) checkIfCredentialsAreRemoved(ctx context.Context, addr oid.Address, cachedBoxValue *cache.AccessBoxCacheValue) (*accessbox.Box, []object.Attribute, error) { if time.Since(cachedBoxValue.PutTime) < c.removingCheckDuration { return cachedBoxValue.Box, cachedBoxValue.Attributes, nil } box, attrs, err := c.getAccessBox(ctx, addr) if err != nil { if client.IsErrObjectAlreadyRemoved(err) { c.cache.Delete(addr) return nil, nil, fmt.Errorf("get access box: %w", err) } return cachedBoxValue.Box, cachedBoxValue.Attributes, nil } cachedBox, err := box.GetBox(c.key) if err != nil { c.cache.Delete(addr) return nil, nil, fmt.Errorf("get gate box: %w", err) } // we need this to reset PutTime // to don't check for removing each time after removingCheckDuration interval c.putBoxToCache(addr, cachedBox, attrs) return cachedBoxValue.Box, attrs, nil } func (c *cred) putBoxToCache(addr oid.Address, box *accessbox.Box, attrs []object.Attribute) { if err := c.cache.Put(addr, box, attrs); err != nil { c.log.Warn(logs.CouldntPutAccessBoxIntoCache, zap.String("address", addr.EncodeToString())) } } func (c *cred) getAccessBox(ctx context.Context, addr oid.Address) (*accessbox.AccessBox, []object.Attribute, error) { obj, err := c.frostFS.GetCredsObject(ctx, addr) if err != nil { return nil, nil, fmt.Errorf("read payload and attributes: %w", err) } // decode access box var box accessbox.AccessBox if err = box.Unmarshal(obj.Payload()); err != nil { return nil, nil, fmt.Errorf("unmarhal access box: %w", err) } return &box, obj.Attributes(), nil } func (c *cred) Put(ctx context.Context, idCnr cid.ID, prm CredentialsParam) (oid.Address, error) { return c.createObject(ctx, idCnr, nil, prm) } func (c *cred) Update(ctx context.Context, addr oid.Address, prm CredentialsParam) (oid.Address, error) { objID := addr.Object() return c.createObject(ctx, addr.Container(), &objID, prm) } func (c *cred) createObject(ctx context.Context, cnrID cid.ID, newVersionFor *oid.ID, prm CredentialsParam) (oid.Address, error) { if len(prm.Keys) == 0 { return oid.Address{}, ErrEmptyPublicKeys } else if prm.AccessBox == nil { return oid.Address{}, ErrEmptyBearerToken } data, err := prm.AccessBox.Marshal() if err != nil { return oid.Address{}, fmt.Errorf("marshall box: %w", err) } idObj, err := c.frostFS.CreateObject(ctx, PrmObjectCreate{ Creator: prm.OwnerID, Container: cnrID, Filepath: strconv.FormatInt(time.Now().Unix(), 10) + "_access.box", ExpirationEpoch: prm.Expiration, NewVersionFor: newVersionFor, Payload: data, CustomAttributes: prm.CustomAttributes, }) if err != nil { return oid.Address{}, fmt.Errorf("create object: %w", err) } var addr oid.Address addr.SetObject(idObj) addr.SetContainer(cnrID) return addr, nil }