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rights.go
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rights.go
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// Copyright © 2019 The Things Network Foundation, The Things Industries B.V.
//
// Licensed under the Apache License, Version 2.0 (the "License");
// you may not use this file except in compliance with the License.
// You may obtain a copy of the License at
//
// http://www.apache.org/licenses/LICENSE-2.0
//
// Unless required by applicable law or agreed to in writing, software
// distributed under the License is distributed on an "AS IS" BASIS,
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
// See the License for the specific language governing permissions and
// limitations under the License.
package identityserver
import (
"context"
"github.com/gogo/protobuf/types"
"github.com/jinzhu/gorm"
"go.thethings.network/lorawan-stack/v3/pkg/errors"
"go.thethings.network/lorawan-stack/v3/pkg/identityserver/store"
"go.thethings.network/lorawan-stack/v3/pkg/ttnpb"
)
func allPotentialRights(entityID ttnpb.Identifiers, rights *ttnpb.Rights) *ttnpb.Rights {
switch entityID.EntityType() {
case "application":
return ttnpb.AllApplicationRights.Intersect(rights)
case "client":
return ttnpb.AllClientRights.Intersect(rights)
case "gateway":
return ttnpb.AllGatewayRights.Intersect(rights)
case "organization":
return ttnpb.AllEntityRights.Union(ttnpb.AllOrganizationRights).Intersect(rights)
case "user":
return ttnpb.AllEntityRights.Union(ttnpb.AllOrganizationRights, ttnpb.AllUserRights).Intersect(rights)
}
return nil
}
func (is *IdentityServer) getRights(ctx context.Context, entityID ttnpb.Identifiers) (entityRights, universalRights *ttnpb.Rights, err error) {
authInfo, err := is.authInfo(ctx)
if err != nil {
return nil, nil, err
}
authInfoRights := ttnpb.RightsFrom(authInfo.GetRights()...)
universalRights = allPotentialRights(entityID, authInfo.GetUniversalRights())
if len(universalRights.GetRights()) == 0 {
universalRights = nil
}
allPotentialRights := allPotentialRights(entityID, authInfoRights)
// If the rights of the auth do not contain any rights for the entity type,
// there's nothing more to do.
if len(allPotentialRights.GetRights()) == 0 {
return nil, universalRights, nil
}
// If the caller is the requested entity,
// we can directly return the rights of the auth.
authenticatedAs := authInfo.GetEntityIdentifiers()
if entityID.EntityType() == authenticatedAs.EntityType() &&
entityID.IDString() == authenticatedAs.IDString() {
return authInfoRights, universalRights, nil
}
// If the caller is not an organization or user, there's nothing more to do.
ouID := authInfo.GetOrganizationOrUserIdentifiers()
if ouID == nil {
return nil, universalRights, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
membershipStore := is.getMembershipStore(ctx, db)
// Find direct membership rights of the organization or user.
directMemberRights, err := membershipStore.GetMember(ctx, ouID, entityID)
if err != nil && !errors.IsNotFound(err) {
return err
}
// Expand the pseudo-rights.
entityRights = directMemberRights.Implied()
// If entityRights already includes all potential rights,
// there's nothing more to do.
if len(allPotentialRights.Sub(entityRights).GetRights()) == 0 {
return nil
}
// If the caller is not a user, there's nothing more to do.
usrID := ouID.GetUserIDs()
if usrID == nil {
return nil
}
// Find indirect memberships (through organizations).
// TODO: Cache this (https://github.com/TheThingsNetwork/lorawan-stack/issues/443).
commonOrganizations, err := membershipStore.FindIndirectMemberships(ctx, usrID, entityID)
if err != nil {
return err
}
for _, commonOrganization := range commonOrganizations {
rightsOnOrganization := commonOrganization.RightsOnOrganization.Implied()
organizationRights := commonOrganization.OrganizationRights.Implied()
entityRights = entityRights.Union(rightsOnOrganization.Intersect(organizationRights))
}
return nil
})
if err != nil {
return nil, nil, err
}
entityRights = entityRights.Intersect(authInfoRights)
return entityRights, universalRights, err
}
// ApplicationRights returns the rights the caller has on the given application.
func (is *IdentityServer) ApplicationRights(ctx context.Context, appIDs ttnpb.ApplicationIdentifiers) (*ttnpb.Rights, error) {
entity, universal, err := is.getRights(ctx, appIDs)
if err != nil {
return nil, err
}
if entity != nil {
return entity.Union(universal), nil
}
if !is.IsAdmin(ctx) && universal == nil {
return &ttnpb.Rights{}, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
_, err := store.GetApplicationStore(db).GetApplication(ctx, &appIDs, &types.FieldMask{Paths: []string{"ids"}})
return err
})
if err != nil {
return nil, err
}
return universal, nil
}
// ClientRights returns the rights the caller has on the given client.
func (is *IdentityServer) ClientRights(ctx context.Context, cliIDs ttnpb.ClientIdentifiers) (*ttnpb.Rights, error) {
entity, universal, err := is.getRights(ctx, cliIDs)
if err != nil {
return nil, err
}
if entity != nil {
return entity.Union(universal), nil
}
if !is.IsAdmin(ctx) && universal == nil {
return &ttnpb.Rights{}, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
_, err := store.GetClientStore(db).GetClient(ctx, &cliIDs, &types.FieldMask{Paths: []string{"ids"}})
return err
})
if err != nil {
return nil, err
}
return universal, nil
}
// GatewayRights returns the rights the caller has on the given gateway.
func (is *IdentityServer) GatewayRights(ctx context.Context, gtwIDs ttnpb.GatewayIdentifiers) (*ttnpb.Rights, error) {
entity, universal, err := is.getRights(ctx, gtwIDs)
if err != nil {
return nil, err
}
if err != nil {
return nil, err
}
if entity != nil {
return entity.Union(universal), nil
}
if !is.IsAdmin(ctx) && universal == nil {
return &ttnpb.Rights{}, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
_, err := store.GetGatewayStore(db).GetGateway(ctx, >wIDs, &types.FieldMask{Paths: []string{"ids"}})
return err
})
if err != nil {
return nil, err
}
return universal, nil
}
// OrganizationRights returns the rights the caller has on the given organization.
func (is *IdentityServer) OrganizationRights(ctx context.Context, orgIDs ttnpb.OrganizationIdentifiers) (*ttnpb.Rights, error) {
entity, universal, err := is.getRights(ctx, orgIDs)
if err != nil {
return nil, err
}
if err != nil {
return nil, err
}
if entity != nil {
return entity.Union(universal), nil
}
if !is.IsAdmin(ctx) && universal == nil {
return &ttnpb.Rights{}, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
_, err := store.GetOrganizationStore(db).GetOrganization(ctx, &orgIDs, &types.FieldMask{Paths: []string{"ids"}})
return err
})
if err != nil {
return nil, err
}
return universal, nil
}
// UserRights returns the rights the caller has on the given user.
func (is *IdentityServer) UserRights(ctx context.Context, userIDs ttnpb.UserIdentifiers) (*ttnpb.Rights, error) {
entity, universal, err := is.getRights(ctx, userIDs)
if err != nil {
return nil, err
}
if err != nil {
return nil, err
}
if entity != nil {
return entity.Union(universal), nil
}
if !is.IsAdmin(ctx) && universal == nil {
return &ttnpb.Rights{}, nil
}
err = is.withDatabase(ctx, func(db *gorm.DB) error {
_, err := store.GetUserStore(db).GetUser(ctx, &userIDs, &types.FieldMask{Paths: []string{"ids"}})
return err
})
if err != nil {
return nil, err
}
return universal, nil
}