frostfs-node/pkg/services/object/acl/v2/service.go

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