frostfs-node/pkg/services/object/acl/ape.go

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package acl
import (
"errors"
"fmt"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/container"
v2 "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/services/object/acl/v2"
"git.frostfs.info/TrueCloudLab/frostfs-node/pkg/util/logger"
apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
)
var errAPEChainNoSource = errors.New("could not get ape chain source for the container")
type apeCheckerImpl struct {
log *logger.Logger
apeSrc container.AccessPolicyEngineChainSource
}
func NewAPEChecker(log *logger.Logger, apeSrc container.AccessPolicyEngineChainSource) v2.APEChainChecker {
return &apeCheckerImpl{
log: log,
apeSrc: apeSrc,
}
}
func (c *apeCheckerImpl) CheckIfRequestPermitted(reqInfo v2.RequestInfo) error {
cnr := reqInfo.ContainerID()
chainCache, err := c.apeSrc.GetChainSource(cnr)
if err != nil {
return errAPEChainNoSource
}
request := new(Request)
request.FromRequestInfo(reqInfo)
status, ruleFound, err := chainCache.IsAllowed(apechain.Ingress, "", request)
if err != nil {
return err
}
if !ruleFound || status == apechain.Allow {
return nil
}
return apeErr(reqInfo, status)
}
const accessDeniedAPEReasonFmt = "access to operation %s is denied by access policy engine: %s"
func apeErr(req v2.RequestInfo, status apechain.Status) error {
errAccessDenied := &apistatus.ObjectAccessDenied{}
errAccessDenied.WriteReason(fmt.Sprintf(accessDeniedAPEReasonFmt, req.Operation(), status.String()))
return errAccessDenied
}