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

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package ape
import (
"context"
"errors"
"fmt"
objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
frostfsidcore "git.frostfs.info/TrueCloudLab/frostfs-node/pkg/core/frostfsid"
cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
"git.frostfs.info/TrueCloudLab/frostfs-sdk-go/user"
apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
nativeschema "git.frostfs.info/TrueCloudLab/policy-engine/schema/native"
"github.com/nspcc-dev/neo-go/pkg/crypto/keys"
)
type checkerImpl struct {
chainRouter policyengine.ChainRouter
headerProvider HeaderProvider
frostFSIDClient frostfsidcore.SubjectProvider
}
func NewChecker(chainRouter policyengine.ChainRouter, headerProvider HeaderProvider, frostFSIDClient frostfsidcore.SubjectProvider) Checker {
return &checkerImpl{
chainRouter: chainRouter,
headerProvider: headerProvider,
frostFSIDClient: frostFSIDClient,
}
}
type Prm struct {
Namespace string
Container cid.ID
// Object ID is omitted for some methods.
Object *oid.ID
// If Header is set, then object attributes and properties will be parsed from
// a request/response's header.
Header *objectV2.Header
// Method must be represented only as a constant represented in native schema.
Method string
// Role must be representedonly as a constant represented in native schema.
Role string
// An encoded sender's public key string.
SenderKey string
// An encoded container's owner user ID.
ContainerOwner user.ID
// If SoftAPECheck is set to true, then NoRuleFound is interpreted as allow.
SoftAPECheck bool
// If true, object headers will not retrieved from storage engine.
WithoutHeaderRequest bool
}
var errMissingOID = errors.New("object ID is not set")
// CheckAPE checks if a request or a response is permitted creating an ape request and passing
// it to chain router.
func (c *checkerImpl) CheckAPE(ctx context.Context, prm Prm) error {
// APE check is ignored for some inter-node requests.
if prm.Role == nativeschema.PropertyValueContainerRoleContainer {
return nil
} else if prm.Role == nativeschema.PropertyValueContainerRoleIR {
switch prm.Method {
case nativeschema.MethodGetObject,
nativeschema.MethodHeadObject,
nativeschema.MethodSearchObject,
nativeschema.MethodRangeObject,
nativeschema.MethodHashObject:
return nil
default:
}
}
r, err := c.newAPERequest(ctx, prm)
if err != nil {
return fmt.Errorf("failed to create ape request: %w", err)
}
pub, err := keys.NewPublicKeyFromString(prm.SenderKey)
if err != nil {
return err
}
rt := policyengine.NewRequestTargetExtended(prm.Namespace, prm.Container.EncodeToString(), fmt.Sprintf("%s:%s", prm.Namespace, pub.Address()), nil)
status, ruleFound, err := c.chainRouter.IsAllowed(apechain.Ingress, rt, r)
if err != nil {
return err
}
if !ruleFound && prm.SoftAPECheck || status == apechain.Allow {
return nil
}
return fmt.Errorf("method %s: %s", prm.Method, status)
}