forked from TrueCloudLab/frostfs-node
112 lines
2.8 KiB
Go
112 lines
2.8 KiB
Go
package wrapper
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import (
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"fmt"
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"github.com/nspcc-dev/neofs-node/pkg/core/container"
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client "github.com/nspcc-dev/neofs-node/pkg/morph/client/container"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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"github.com/nspcc-dev/neofs-sdk-go/eacl"
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"github.com/nspcc-dev/neofs-sdk-go/session"
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"github.com/nspcc-dev/neofs-sdk-go/signature"
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)
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// GetEACL reads the extended ACL table from NeoFS system
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// through Container contract call.
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func (w *Wrapper) GetEACL(cid *cid.ID) (*eacl.Table, error) {
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if cid == nil {
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return nil, errNilArgument
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}
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args := client.EACLArgs{}
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v2 := cid.ToV2()
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if v2 == nil {
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return nil, errUnsupported // use other major version if there any
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}
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args.SetCID(v2.GetValue())
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rpcAnswer, err := w.client.EACL(args)
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if err != nil {
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return nil, err
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}
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// Client may not return errors if the table is missing, so check this case additionally.
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// The absence of a signature in the response can be taken as an eACL absence criterion,
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// since unsigned table cannot be approved in the storage by design.
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sig := rpcAnswer.Signature()
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if len(sig) == 0 {
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return nil, container.ErrEACLNotFound
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}
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table := eacl.NewTable()
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if err = table.Unmarshal(rpcAnswer.EACL()); err != nil {
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// use other major version if there any
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return nil, err
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}
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binToken := rpcAnswer.SessionToken()
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if len(binToken) > 0 {
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tok := session.NewToken()
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err = tok.Unmarshal(binToken)
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if err != nil {
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return nil, fmt.Errorf("could not unmarshal session token: %w", err)
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}
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table.SetSessionToken(tok)
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}
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tableSignature := signature.New()
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tableSignature.SetKey(rpcAnswer.PublicKey())
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tableSignature.SetSign(sig)
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table.SetSignature(tableSignature)
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return table, nil
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}
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// PutEACL marshals table, and passes it to Wrapper's PutEACLBinary method
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// along with sig.Key() and sig.Sign().
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//
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// Returns error if table is nil.
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//
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// If TryNotary is provided, calls notary contract.
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func PutEACL(w *Wrapper, table *eacl.Table) error {
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if table == nil {
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return errNilArgument
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}
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data, err := table.Marshal()
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if err != nil {
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return fmt.Errorf("can't marshal eacl table: %w", err)
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}
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binToken, err := table.SessionToken().Marshal()
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if err != nil {
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return fmt.Errorf("could not marshal session token: %w", err)
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}
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sig := table.Signature()
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return w.PutEACL(data, sig.Key(), sig.Sign(), binToken)
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}
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// PutEACL saves binary eACL table with its session token, key and signature
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// in NeoFS system through Container contract call.
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//
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// Returns any error encountered that caused the saving to interrupt.
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func (w *Wrapper) PutEACL(table, key, sig, token []byte) error {
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if len(sig) == 0 || len(key) == 0 {
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return errNilArgument
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}
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args := client.SetEACLArgs{}
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args.SetSignature(sig)
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args.SetPublicKey(key)
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args.SetEACL(table)
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args.SetSessionToken(token)
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return w.client.SetEACL(args)
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}
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