forked from TrueCloudLab/frostfs-node
95 lines
2.9 KiB
Go
95 lines
2.9 KiB
Go
package container
|
|
|
|
import (
|
|
"crypto/sha256"
|
|
"fmt"
|
|
|
|
"git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/refs"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/morph/client"
|
|
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
|
|
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/eacl"
|
|
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/session"
|
|
)
|
|
|
|
// GetEACL reads the extended ACL table from FrostFS system
|
|
// through Container contract call.
|
|
//
|
|
// Returns apistatus.EACLNotFound if eACL table is missing in the contract.
|
|
func (c *Client) GetEACL(cnr cid.ID) (*container.EACL, error) {
|
|
binCnr := make([]byte, sha256.Size)
|
|
cnr.Encode(binCnr)
|
|
|
|
prm := client.TestInvokePrm{}
|
|
prm.SetMethod(eaclMethod)
|
|
prm.SetArgs(binCnr)
|
|
|
|
prms, err := c.client.TestInvoke(prm)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not perform test invocation (%s): %w", eaclMethod, err)
|
|
} else if ln := len(prms); ln != 1 {
|
|
return nil, fmt.Errorf("unexpected stack item count (%s): %d", eaclMethod, ln)
|
|
}
|
|
|
|
arr, err := client.ArrayFromStackItem(prms[0])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not get item array of eACL (%s): %w", eaclMethod, err)
|
|
}
|
|
|
|
if len(arr) != 4 {
|
|
return nil, fmt.Errorf("unexpected eacl stack item count (%s): %d", eaclMethod, len(arr))
|
|
}
|
|
|
|
rawEACL, err := client.BytesFromStackItem(arr[0])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not get byte array of eACL (%s): %w", eaclMethod, err)
|
|
}
|
|
|
|
sig, err := client.BytesFromStackItem(arr[1])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not get byte array of eACL signature (%s): %w", eaclMethod, err)
|
|
}
|
|
|
|
// Client may not return errors if the table is missing, so check this case additionally.
|
|
// The absence of a signature in the response can be taken as an eACL absence criterion,
|
|
// since unsigned table cannot be approved in the storage by design.
|
|
if len(sig) == 0 {
|
|
return nil, new(apistatus.EACLNotFound)
|
|
}
|
|
|
|
pub, err := client.BytesFromStackItem(arr[2])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not get byte array of eACL public key (%s): %w", eaclMethod, err)
|
|
}
|
|
|
|
binToken, err := client.BytesFromStackItem(arr[3])
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not get byte array of eACL session token (%s): %w", eaclMethod, err)
|
|
}
|
|
|
|
var res container.EACL
|
|
|
|
res.Value = eacl.NewTable()
|
|
if err = res.Value.Unmarshal(rawEACL); err != nil {
|
|
return nil, err
|
|
}
|
|
|
|
if len(binToken) > 0 {
|
|
res.Session = new(session.Container)
|
|
|
|
err = res.Session.Unmarshal(binToken)
|
|
if err != nil {
|
|
return nil, fmt.Errorf("could not unmarshal session token: %w", err)
|
|
}
|
|
}
|
|
|
|
// TODO(@cthulhu-rider): #468 implement and use another approach to avoid conversion
|
|
var sigV2 refs.Signature
|
|
sigV2.SetKey(pub)
|
|
sigV2.SetSign(sig)
|
|
sigV2.SetScheme(refs.ECDSA_RFC6979_SHA256)
|
|
|
|
err = res.Signature.ReadFromV2(sigV2)
|
|
return &res, err
|
|
}
|