graph: expose @libre.graph.shareTypes on driveItems

go.mod

@@ -62,7 +62,7 @@ require (
 	github.com/onsi/gomega v1.42.1
 	github.com/open-policy-agent/opa v1.19.1
 	github.com/opencloud-eu/icap-client v0.0.0-20250930132611-28a2afe62d89
-	github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901070651-08a5330ce57d
+	github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901115715-6c4a98340429
 	github.com/opencloud-eu/reva/v2 v2.49.0
 	github.com/opensearch-project/opensearch-go/v4 v4.7.3
 	github.com/orcaman/concurrent-map v1.0.0

go.sum

@@ -942,6 +942,8 @@ github.com/opencloud-eu/icap-client v0.0.0-20250930132611-28a2afe62d89 h1:W1ms+l
 github.com/opencloud-eu/icap-client v0.0.0-20250930132611-28a2afe62d89/go.mod h1:vigJkNss1N2QEceCuNw/ullDehncuJNFB6mEnzfq9UI=
 github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901070651-08a5330ce57d h1:3zbb31655ZvqwLMWMIiUAhYer6YcFnv/oguujnX7aOU=
 github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901070651-08a5330ce57d/go.mod h1:lTM8JeGblNpoMySTW7Lui2+c5TTLI95mwxtdUIHHrhU=
+github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901115715-6c4a98340429 h1:i/C5/1I0eRkjOcdtqQboyPvV0bPyAOahe/wWHGupKVY=
+github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901115715-6c4a98340429/go.mod h1:lTM8JeGblNpoMySTW7Lui2+c5TTLI95mwxtdUIHHrhU=
 github.com/opencloud-eu/reva/v2 v2.49.0 h1:AwECMDDth3NUaihZRf9bI9HNpWutvaRijOCvQyQfTT4=
 github.com/opencloud-eu/reva/v2 v2.49.0/go.mod h1:Frg+UWnVcSy+412UB3l2LcD0KY8ZNu1samimwkNywbg=
 github.com/opencloud-eu/secure v0.0.0-20260312082735-b6f5cb2244e4 h1:l2oB/RctH+t8r7QBj5p8thfEHCM/jF35aAY3WQ3hADI=

services/graph/pkg/service/v0/driveitems.go

@@ -15,13 +15,16 @@ import (
 
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
 	cs3rpc "github.com/cs3org/go-cs3apis/cs3/rpc/v1beta1"
+	link "github.com/cs3org/go-cs3apis/cs3/sharing/link/v1beta1"
 	storageprovider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
 	types "github.com/cs3org/go-cs3apis/cs3/types/v1beta1"
 	"github.com/go-chi/render"
 	libregraph "github.com/opencloud-eu/libre-graph-api-go"
 	"golang.org/x/crypto/sha3"
+	"google.golang.org/protobuf/types/known/fieldmaskpb"
 
 	revactx "github.com/opencloud-eu/reva/v2/pkg/ctx"
+	"github.com/opencloud-eu/reva/v2/pkg/publicshare"
 	"github.com/opencloud-eu/reva/v2/pkg/storagespace"
 	"github.com/opencloud-eu/reva/v2/pkg/tags"
 	"github.com/opencloud-eu/reva/v2/pkg/utils"
@@ -33,7 +36,13 @@ import (
 )
 
 // opt-in driveItem instance annotations, returned only when requested via $select
-const _selectAllowedValues = "@libre.graph.permissions.actions.allowedValues"
+const (
+	_selectAllowedValues = "@libre.graph.permissions.actions.allowedValues"
+	_selectShareTypes    = "@libre.graph.shareTypes"
+)
+
+// without it the provider leaves the share-types opaque empty
+var shareTypesFieldMask = &fieldmaskpb.FieldMask{Paths: []string{"share-types"}}
 
 // opt-in driveItem relations, returned only when requested via $expand
 const _expandChildren = "children"
@@ -210,9 +219,14 @@ func (g Graph) GetRootDriveChildren(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
-	lRes, err := gatewayClient.ListContainer(ctx, &storageprovider.ListContainerRequest{
+	listRequest := &storageprovider.ListContainerRequest{
 		Ref: &storageprovider.Reference{ResourceId: space.GetRoot()},
-	})
+	}
+	if driveItemPropertySelected(r, _selectShareTypes) {
+		listRequest.FieldMask = shareTypesFieldMask
+	}
+
+	lRes, err := gatewayClient.ListContainer(ctx, listRequest)
 	switch {
 	case err != nil:
 		g.logger.Error().Err(err).Msg("error making ListContainer grpc call")
@@ -246,6 +260,10 @@ func (g Graph) GetRootDriveChildren(w http.ResponseWriter, r *http.Request) {
 		}
 	}
 
+	if driveItemPropertySelected(r, _selectShareTypes) {
+		g.addShareTypes(ctx, files, lRes.GetInfos())
+	}
+
 	render.Status(r, http.StatusOK)
 	render.JSON(w, r, &ListResponse{Value: files})
 }
@@ -323,6 +341,11 @@ func (g Graph) GetDriveItem(w http.ResponseWriter, r *http.Request) {
 		driveItem.Children = children
 	}
 
+	if driveItemPropertySelected(r, _selectShareTypes) {
+		infos := []*storageprovider.ResourceInfo{res.GetInfo()}
+		driveItem.LibreGraphShareTypes = shareTypesOf(res.GetInfo(), g.listLinkShares(ctx, infos))
+	}
+
 	render.Status(r, http.StatusOK)
 	render.JSON(w, r, &driveItem)
 }
@@ -371,9 +394,14 @@ func (g Graph) listDriveItemChildren(w http.ResponseWriter, r *http.Request, dri
 		return nil, false
 	}
 
-	res, err := gatewayClient.ListContainer(r.Context(), &storageprovider.ListContainerRequest{
+	childrenRequest := &storageprovider.ListContainerRequest{
 		Ref: &storageprovider.Reference{ResourceId: driveItemID},
-	})
+	}
+	if driveItemPropertySelected(r, _selectShareTypes) {
+		childrenRequest.FieldMask = shareTypesFieldMask
+	}
+
+	res, err := gatewayClient.ListContainer(r.Context(), childrenRequest)
 	switch {
 	case err != nil:
 		errorcode.GeneralException.Render(w, r, http.StatusInternalServerError, err.Error())
@@ -400,6 +428,10 @@ func (g Graph) listDriveItemChildren(w http.ResponseWriter, r *http.Request, dri
 		return nil, false
 	}
 
+	if driveItemPropertySelected(r, _selectShareTypes) {
+		g.addShareTypes(r.Context(), files, res.GetInfos())
+	}
+
 	return files, true
 }
 
@@ -532,6 +564,69 @@ func cs3ResourceToDriveItem(logger *log.Logger, publicBaseURL *url.URL, res *sto
 	return driveItem, nil
 }
 
+// addShareTypes reads user and group shares off the grants, links from the share
+// manager. Links are not stored as grants, so they need one filter per item,
+// which is why the whole annotation is only built when it is selected.
+func (g Graph) addShareTypes(ctx context.Context, items []libregraph.DriveItem, infos []*storageprovider.ResourceInfo) {
+	linkShares := g.listLinkShares(ctx, infos)
+
+	for i, info := range infos {
+		if i >= len(items) {
+			break
+		}
+
+		items[i].LibreGraphShareTypes = shareTypesOf(info, linkShares)
+	}
+}
+
+// shareTypesOf maps the grants on a resource, plus a hit in the link lookup, to
+// the annotation values.
+func shareTypesOf(info *storageprovider.ResourceInfo, linkShares map[string]struct{}) []string {
+	var types []string
+	for _, grant := range strings.Split(utils.ReadPlainFromOpaque(info.GetOpaque(), "share-types"), ",") {
+		switch grant {
+		case strconv.Itoa(int(storageprovider.GranteeType_GRANTEE_TYPE_USER)):
+			types = append(types, "user")
+		case strconv.Itoa(int(storageprovider.GranteeType_GRANTEE_TYPE_GROUP)):
+			types = append(types, "group")
+		}
+	}
+
+	if _, ok := linkShares[info.GetId().GetOpaqueId()]; ok {
+		types = append(types, "link")
+	}
+
+	return types
+}
+
+// listLinkShares returns the resource ids that carry a public link. A failed
+// lookup is logged and treated as "no links", same as the WebDAV PROPFIND.
+func (g Graph) listLinkShares(ctx context.Context, infos []*storageprovider.ResourceInfo) map[string]struct{} {
+	gatewayClient, err := g.gatewaySelector.Next()
+	if err != nil {
+		g.logger.Error().Err(err).Msg("could not select gateway client for public shares")
+		return nil
+	}
+
+	filters := make([]*link.ListPublicSharesRequest_Filter, 0, len(infos))
+	for _, info := range infos {
+		filters = append(filters, publicshare.ResourceIDFilter(info.GetId()))
+	}
+
+	res, err := gatewayClient.ListPublicShares(ctx, &link.ListPublicSharesRequest{Filters: filters})
+	if err != nil || res.GetStatus().GetCode() != cs3rpc.Code_CODE_OK {
+		g.logger.Error().Err(err).Msg("could not list public shares")
+		return nil
+	}
+
+	linkShares := make(map[string]struct{}, len(res.GetShare()))
+	for _, share := range res.GetShare() {
+		linkShares[share.GetResourceId().GetOpaqueId()] = struct{}{}
+	}
+
+	return linkShares
+}
+
 // metadataToFacet builds a DriveItem facet *T from CS3 arbitrary metadata under
 // the "libre.graph.<facet>." key prefix. Nil when no such keys are present.
 func metadataToFacet[T any](metadata map[string]string, facet string) *T {

services/graph/pkg/service/v0/driveitems_test.go

@@ -11,6 +11,7 @@ import (
 
 	gateway "github.com/cs3org/go-cs3apis/cs3/gateway/v1beta1"
 	userpb "github.com/cs3org/go-cs3apis/cs3/identity/user/v1beta1"
+	link "github.com/cs3org/go-cs3apis/cs3/sharing/link/v1beta1"
 	provider "github.com/cs3org/go-cs3apis/cs3/storage/provider/v1beta1"
 	"github.com/go-chi/chi/v5"
 	. "github.com/onsi/ginkgo/v2"
@@ -436,6 +437,104 @@ var _ = Describe("Driveitems", func() {
 				Expect(res.Value[0].PendingOperations).To(BeNil())
 			})
 
+			It("omits share types unless they are selected", func() {
+				gatewayClient.On("ListContainer", mock.Anything, mock.Anything).Return(&provider.ListContainerResponse{
+					Status: status.NewOK(ctx),
+					Infos: []*provider.ResourceInfo{
+						{
+							Type:   provider.ResourceType_RESOURCE_TYPE_FILE,
+							Id:     &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"},
+							Etag:   "etag",
+							Mtime:  utils.TimeToTS(mtime),
+							Opaque: utils.AppendPlainToOpaque(nil, "share-types", "1,2"),
+						},
+					},
+				}, nil)
+
+				res := assertItemsList(1)
+				Expect(res.Value[0].LibreGraphShareTypes).To(BeNil())
+				gatewayClient.AssertNotCalled(GinkgoT(), "ListPublicShares", mock.Anything, mock.Anything)
+			})
+
+			It("returns the share types of an item when selected", func() {
+				r = r.WithContext(r.Context())
+				q := r.URL.Query()
+				q.Add("$select", "@libre.graph.shareTypes")
+				r.URL.RawQuery = q.Encode()
+
+				gatewayClient.On("ListContainer", mock.Anything, mock.Anything).Return(&provider.ListContainerResponse{
+					Status: status.NewOK(ctx),
+					Infos: []*provider.ResourceInfo{
+						{
+							Type:   provider.ResourceType_RESOURCE_TYPE_FILE,
+							Id:     &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"},
+							Etag:   "etag",
+							Mtime:  utils.TimeToTS(mtime),
+							Opaque: utils.AppendPlainToOpaque(nil, "share-types", "1,2"),
+						},
+					},
+				}, nil)
+				gatewayClient.On("ListPublicShares", mock.Anything, mock.Anything).Return(&link.ListPublicSharesResponse{
+					Status: status.NewOK(ctx),
+					Share: []*link.PublicShare{
+						{ResourceId: &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"}},
+					},
+				}, nil)
+
+				res := assertItemsList(1)
+				Expect(res.Value[0].LibreGraphShareTypes).To(ConsistOf("user", "group", "link"))
+			})
+
+			It("reports only the link when the item has no grants", func() {
+				q := r.URL.Query()
+				q.Add("$select", "@libre.graph.shareTypes")
+				r.URL.RawQuery = q.Encode()
+
+				gatewayClient.On("ListContainer", mock.Anything, mock.Anything).Return(&provider.ListContainerResponse{
+					Status: status.NewOK(ctx),
+					Infos: []*provider.ResourceInfo{
+						{
+							Type:  provider.ResourceType_RESOURCE_TYPE_FILE,
+							Id:    &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"},
+							Etag:  "etag",
+							Mtime: utils.TimeToTS(mtime),
+						},
+					},
+				}, nil)
+				gatewayClient.On("ListPublicShares", mock.Anything, mock.Anything).Return(&link.ListPublicSharesResponse{
+					Status: status.NewOK(ctx),
+					Share: []*link.PublicShare{
+						{ResourceId: &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"}},
+					},
+				}, nil)
+
+				res := assertItemsList(1)
+				Expect(res.Value[0].LibreGraphShareTypes).To(ConsistOf("link"))
+			})
+
+			It("keeps the grant types when the public share lookup fails", func() {
+				q := r.URL.Query()
+				q.Add("$select", "@libre.graph.shareTypes")
+				r.URL.RawQuery = q.Encode()
+
+				gatewayClient.On("ListContainer", mock.Anything, mock.Anything).Return(&provider.ListContainerResponse{
+					Status: status.NewOK(ctx),
+					Infos: []*provider.ResourceInfo{
+						{
+							Type:   provider.ResourceType_RESOURCE_TYPE_FILE,
+							Id:     &provider.ResourceId{StorageId: "storageid", SpaceId: "spaceid", OpaqueId: "opaqueid"},
+							Etag:   "etag",
+							Mtime:  utils.TimeToTS(mtime),
+							Opaque: utils.AppendPlainToOpaque(nil, "share-types", "1"),
+						},
+					},
+				}, nil)
+				gatewayClient.On("ListPublicShares", mock.Anything, mock.Anything).Return(nil, errors.New("nope"))
+
+				res := assertItemsList(1)
+				Expect(res.Value[0].LibreGraphShareTypes).To(ConsistOf("user"))
+			})
+
 			It("reports a pending content update while the item is being processed", func() {
 				gatewayClient.On("ListContainer", mock.Anything, mock.Anything).Return(&provider.ListContainerResponse{
 					Status: status.NewOK(ctx),

vendor/modules.txt

@@ -1364,7 +1364,7 @@ github.com/open-policy-agent/opa/v1/version
 # github.com/opencloud-eu/icap-client v0.0.0-20250930132611-28a2afe62d89
 ## explicit; go 1.24.6
 github.com/opencloud-eu/icap-client
-# github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901070651-08a5330ce57d
+# github.com/opencloud-eu/libre-graph-api-go v1.0.8-0.20260901115715-6c4a98340429
 ## explicit; go 1.23
 github.com/opencloud-eu/libre-graph-api-go
 # github.com/opencloud-eu/reva/v2 v2.49.0