609 lines
13 KiB
Go
609 lines
13 KiB
Go
package v2
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import (
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"context"
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"errors"
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"fmt"
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objectV2 "github.com/nspcc-dev/neofs-api-go/v2/object"
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"github.com/nspcc-dev/neofs-node/pkg/core/container"
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"github.com/nspcc-dev/neofs-node/pkg/core/netmap"
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"github.com/nspcc-dev/neofs-node/pkg/services/object"
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"github.com/nspcc-dev/neofs-node/pkg/util/logger"
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"github.com/nspcc-dev/neofs-sdk-go/container/acl"
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cid "github.com/nspcc-dev/neofs-sdk-go/container/id"
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oid "github.com/nspcc-dev/neofs-sdk-go/object/id"
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sessionSDK "github.com/nspcc-dev/neofs-sdk-go/session"
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"github.com/nspcc-dev/neofs-sdk-go/user"
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"go.uber.org/zap"
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)
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// Service checks basic ACL rules.
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type Service struct {
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*cfg
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c senderClassifier
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}
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type putStreamBasicChecker struct {
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source *Service
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next object.PutObjectStream
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}
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type getStreamBasicChecker struct {
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checker ACLChecker
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object.GetObjectStream
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info RequestInfo
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}
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type rangeStreamBasicChecker struct {
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checker ACLChecker
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object.GetObjectRangeStream
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info RequestInfo
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}
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type searchStreamBasicChecker struct {
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checker ACLChecker
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object.SearchStream
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info RequestInfo
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}
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// Option represents Service constructor option.
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type Option func(*cfg)
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type cfg struct {
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log *logger.Logger
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containers container.Source
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checker ACLChecker
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irFetcher InnerRingFetcher
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nm netmap.Source
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next object.ServiceServer
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}
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func defaultCfg() *cfg {
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return &cfg{
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log: &logger.Logger{Logger: zap.L()},
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}
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}
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// New is a constructor for object ACL checking service.
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func New(opts ...Option) Service {
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cfg := defaultCfg()
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for i := range opts {
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opts[i](cfg)
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}
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panicOnNil := func(v interface{}, name string) {
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if v == nil {
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panic(fmt.Sprintf("ACL service: %s is nil", name))
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}
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}
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panicOnNil(cfg.next, "next Service")
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panicOnNil(cfg.nm, "netmap client")
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panicOnNil(cfg.irFetcher, "inner Ring fetcher")
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panicOnNil(cfg.checker, "acl checker")
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panicOnNil(cfg.containers, "container source")
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return Service{
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cfg: cfg,
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c: senderClassifier{
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log: cfg.log,
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innerRing: cfg.irFetcher,
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netmap: cfg.nm,
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},
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}
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}
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// Get implements ServiceServer interface, makes ACL checks and calls
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// next Get method in the ServiceServer pipeline.
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func (b Service) Get(request *objectV2.GetRequest, stream object.GetObjectStream) error {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return err
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}
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obj, err := getObjectIDFromRequestBody(request.GetBody())
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if err != nil {
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return err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, cnr, obj)
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if err != nil {
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return err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, cnr, acl.OpObjectGet)
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if err != nil {
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return err
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}
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reqInfo.obj = obj
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if !b.checker.CheckBasicACL(reqInfo) {
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return basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return eACLErr(reqInfo, err)
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}
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return b.next.Get(request, &getStreamBasicChecker{
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GetObjectStream: stream,
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info: reqInfo,
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checker: b.checker,
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})
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}
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func (b Service) Put(ctx context.Context) (object.PutObjectStream, error) {
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streamer, err := b.next.Put(ctx)
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return putStreamBasicChecker{
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source: &b,
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next: streamer,
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}, err
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}
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func (b Service) Head(
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ctx context.Context,
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request *objectV2.HeadRequest) (*objectV2.HeadResponse, error) {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return nil, err
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}
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obj, err := getObjectIDFromRequestBody(request.GetBody())
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if err != nil {
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return nil, err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, cnr, obj)
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if err != nil {
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return nil, err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, cnr, acl.OpObjectHead)
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if err != nil {
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return nil, err
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}
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reqInfo.obj = obj
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if !b.checker.CheckBasicACL(reqInfo) {
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return nil, basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return nil, eACLErr(reqInfo, err)
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}
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resp, err := b.next.Head(ctx, request)
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if err == nil {
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if err = b.checker.CheckEACL(resp, reqInfo); err != nil {
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err = eACLErr(reqInfo, err)
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}
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}
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return resp, err
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}
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func (b Service) Search(request *objectV2.SearchRequest, stream object.SearchStream) error {
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id, err := getContainerIDFromRequest(request)
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if err != nil {
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return err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, id, nil)
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if err != nil {
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return err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, id, acl.OpObjectSearch)
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if err != nil {
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return err
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}
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if !b.checker.CheckBasicACL(reqInfo) {
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return basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return eACLErr(reqInfo, err)
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}
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return b.next.Search(request, &searchStreamBasicChecker{
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checker: b.checker,
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SearchStream: stream,
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info: reqInfo,
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})
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}
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func (b Service) Delete(
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ctx context.Context,
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request *objectV2.DeleteRequest) (*objectV2.DeleteResponse, error) {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return nil, err
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}
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obj, err := getObjectIDFromRequestBody(request.GetBody())
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if err != nil {
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return nil, err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, cnr, obj)
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if err != nil {
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return nil, err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, cnr, acl.OpObjectDelete)
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if err != nil {
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return nil, err
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}
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reqInfo.obj = obj
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if !b.checker.CheckBasicACL(reqInfo) {
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return nil, basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return nil, eACLErr(reqInfo, err)
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}
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return b.next.Delete(ctx, request)
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}
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func (b Service) GetRange(request *objectV2.GetRangeRequest, stream object.GetObjectRangeStream) error {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return err
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}
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obj, err := getObjectIDFromRequestBody(request.GetBody())
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if err != nil {
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return err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, cnr, obj)
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if err != nil {
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return err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, cnr, acl.OpObjectRange)
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if err != nil {
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return err
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}
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reqInfo.obj = obj
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if !b.checker.CheckBasicACL(reqInfo) {
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return basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return eACLErr(reqInfo, err)
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}
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return b.next.GetRange(request, &rangeStreamBasicChecker{
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checker: b.checker,
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GetObjectRangeStream: stream,
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info: reqInfo,
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})
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}
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func (b Service) GetRangeHash(
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ctx context.Context,
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request *objectV2.GetRangeHashRequest) (*objectV2.GetRangeHashResponse, error) {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return nil, err
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}
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obj, err := getObjectIDFromRequestBody(request.GetBody())
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if err != nil {
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return nil, err
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}
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sTok, err := originalSessionToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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if sTok != nil {
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err = assertSessionRelation(*sTok, cnr, obj)
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if err != nil {
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return nil, err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return nil, err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := b.findRequestInfo(req, cnr, acl.OpObjectHash)
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if err != nil {
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return nil, err
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}
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reqInfo.obj = obj
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if !b.checker.CheckBasicACL(reqInfo) {
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return nil, basicACLErr(reqInfo)
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} else if err := b.checker.CheckEACL(request, reqInfo); err != nil {
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return nil, eACLErr(reqInfo, err)
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}
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return b.next.GetRangeHash(ctx, request)
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}
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func (p putStreamBasicChecker) Send(request *objectV2.PutRequest) error {
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body := request.GetBody()
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if body == nil {
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return ErrMalformedRequest
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}
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part := body.GetObjectPart()
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if part, ok := part.(*objectV2.PutObjectPartInit); ok {
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cnr, err := getContainerIDFromRequest(request)
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if err != nil {
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return err
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}
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idV2 := part.GetHeader().GetOwnerID()
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if idV2 == nil {
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return errors.New("missing object owner")
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}
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var idOwner user.ID
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err = idOwner.ReadFromV2(*idV2)
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if err != nil {
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return fmt.Errorf("invalid object owner: %w", err)
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}
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objV2 := part.GetObjectID()
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var obj *oid.ID
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if objV2 != nil {
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obj = new(oid.ID)
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err = obj.ReadFromV2(*objV2)
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if err != nil {
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return err
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}
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}
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var sTok *sessionSDK.Object
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if tokV2 := request.GetMetaHeader().GetSessionToken(); tokV2 != nil {
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sTok = new(sessionSDK.Object)
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err = sTok.ReadFromV2(*tokV2)
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if err != nil {
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return fmt.Errorf("invalid session token: %w", err)
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}
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if sTok.AssertVerb(sessionSDK.VerbObjectDelete) {
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// if session relates to object's removal, we don't check
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// relation of the tombstone to the session here since user
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// can't predict tomb's ID.
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err = assertSessionRelation(*sTok, cnr, nil)
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} else {
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err = assertSessionRelation(*sTok, cnr, obj)
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}
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if err != nil {
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return err
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}
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}
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bTok, err := originalBearerToken(request.GetMetaHeader())
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if err != nil {
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return err
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}
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req := MetaWithToken{
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vheader: request.GetVerificationHeader(),
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token: sTok,
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bearer: bTok,
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src: request,
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}
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reqInfo, err := p.source.findRequestInfo(req, cnr, acl.OpObjectPut)
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if err != nil {
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return err
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}
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reqInfo.obj = obj
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if !p.source.checker.CheckBasicACL(reqInfo) || !p.source.checker.StickyBitCheck(reqInfo, idOwner) {
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return basicACLErr(reqInfo)
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} else if err := p.source.checker.CheckEACL(request, reqInfo); err != nil {
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return eACLErr(reqInfo, err)
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}
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}
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return p.next.Send(request)
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}
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func (p putStreamBasicChecker) CloseAndRecv() (*objectV2.PutResponse, error) {
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return p.next.CloseAndRecv()
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}
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func (g *getStreamBasicChecker) Send(resp *objectV2.GetResponse) error {
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if _, ok := resp.GetBody().GetObjectPart().(*objectV2.GetObjectPartInit); ok {
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if err := g.checker.CheckEACL(resp, g.info); err != nil {
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return eACLErr(g.info, err)
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}
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}
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return g.GetObjectStream.Send(resp)
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}
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func (g *rangeStreamBasicChecker) Send(resp *objectV2.GetRangeResponse) error {
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if err := g.checker.CheckEACL(resp, g.info); err != nil {
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return eACLErr(g.info, err)
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}
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return g.GetObjectRangeStream.Send(resp)
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}
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func (g *searchStreamBasicChecker) Send(resp *objectV2.SearchResponse) error {
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if err := g.checker.CheckEACL(resp, g.info); err != nil {
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return eACLErr(g.info, err)
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}
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return g.SearchStream.Send(resp)
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}
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func (b Service) findRequestInfo(req MetaWithToken, idCnr cid.ID, op acl.Op) (info RequestInfo, err error) {
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cnr, err := b.containers.Get(idCnr) // fetch actual container
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if err != nil {
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return info, err
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}
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if req.token != nil {
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currentEpoch, err := b.nm.Epoch()
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if err != nil {
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return info, errors.New("can't fetch current epoch")
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}
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if req.token.ExpiredAt(currentEpoch) {
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return info, fmt.Errorf("%w: token has expired (current epoch: %d)",
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ErrMalformedRequest, currentEpoch)
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}
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if !assertVerb(*req.token, op) {
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return info, ErrInvalidVerb
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}
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}
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// find request role and key
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res, err := b.c.classify(req, idCnr, cnr.Value)
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if err != nil {
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return info, err
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}
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info.basicACL = cnr.Value.BasicACL()
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info.requestRole = res.role
|
|
info.operation = op
|
|
info.cnrOwner = cnr.Value.Owner()
|
|
info.idCnr = idCnr
|
|
|
|
// it is assumed that at the moment the key will be valid,
|
|
// otherwise the request would not pass validation
|
|
info.senderKey = res.key
|
|
|
|
// add bearer token if it is present in request
|
|
info.bearer = req.bearer
|
|
|
|
info.srcRequest = req.src
|
|
|
|
return info, nil
|
|
}
|