83 lines
2.2 KiB
Go
83 lines
2.2 KiB
Go
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package ape
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import (
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"context"
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"fmt"
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objectV2 "git.frostfs.info/TrueCloudLab/frostfs-api-go/v2/object"
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apistatus "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/client/status"
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cid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/container/id"
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oid "git.frostfs.info/TrueCloudLab/frostfs-sdk-go/object/id"
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apechain "git.frostfs.info/TrueCloudLab/policy-engine/pkg/chain"
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policyengine "git.frostfs.info/TrueCloudLab/policy-engine/pkg/engine"
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)
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type checkerImpl struct {
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chainRouter policyengine.ChainRouter
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headerProvider HeaderProvider
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}
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func NewChecker(chainRouter policyengine.ChainRouter, headerProvider HeaderProvider) Checker {
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return &checkerImpl{
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chainRouter: chainRouter,
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headerProvider: headerProvider,
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}
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}
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type Prm struct {
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Namespace string
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Container cid.ID
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// Object ID is omitted for some methods.
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Object *oid.ID
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// If Header is set, then object attributes and properties will be parsed from
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// a request/response's header.
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Header *objectV2.Header
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// Method must be represented only as a constant represented in native schema.
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Method string
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// Role must be representedonly as a constant represented in native schema.
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Role string
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// An encoded sender's public key string.
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SenderKey string
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}
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var (
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errMissingOID = fmt.Errorf("object ID is not set")
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)
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// CheckAPE checks if a request or a response is permitted creating an ape request and passing
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// it to chain router.
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func (c *checkerImpl) CheckAPE(ctx context.Context, prm Prm) error {
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r, err := c.newAPERequest(ctx, prm)
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if err != nil {
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return fmt.Errorf("failed to create ape request: %w", err)
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}
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status, ruleFound, err := c.chainRouter.IsAllowed(apechain.Ingress,
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policyengine.NewRequestTarget(prm.Namespace, prm.Container.EncodeToString()), r)
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if err != nil {
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return err
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}
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if !ruleFound || status == apechain.Allow {
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return nil
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}
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return apeErr(prm.Method, status)
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}
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const accessDeniedAPEReasonFmt = "access to operation %s is denied by access policy engine: %s"
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func apeErr(op string, status apechain.Status) error {
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errAccessDenied := &apistatus.ObjectAccessDenied{}
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errAccessDenied.WriteReason(fmt.Sprintf(accessDeniedAPEReasonFmt, op, status.String()))
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return errAccessDenied
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}
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