105 lines
2.9 KiB
Go
105 lines
2.9 KiB
Go
// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-2021 Vikunja and contributors. All rights reserved.
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//
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// This program is free software: you can redistribute it and/or modify
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// it under the terms of the GNU Affero General Public Licensee as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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//
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// This program is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU Affero General Public Licensee for more details.
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//
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// You should have received a copy of the GNU Affero General Public Licensee
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// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package models
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import (
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"code.vikunja.io/api/pkg/user"
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"code.vikunja.io/web"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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// CanUpdate checks if a user can update a label
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func (l *Label) CanUpdate(s *xorm.Session, a web.Auth) (bool, error) {
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return l.isLabelOwner(s, a) // Only owners should be allowed to update a label
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}
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// CanDelete checks if a user can delete a label
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func (l *Label) CanDelete(s *xorm.Session, a web.Auth) (bool, error) {
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return l.isLabelOwner(s, a) // Only owners should be allowed to delete a label
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}
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// CanRead checks if a user can read a label
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func (l *Label) CanRead(s *xorm.Session, a web.Auth) (bool, int, error) {
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return l.hasAccessToLabel(s, a)
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}
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// CanCreate checks if the user can create a label
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// Currently a dummy.
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func (l *Label) CanCreate(s *xorm.Session, a web.Auth) (bool, error) {
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if _, is := a.(*LinkSharing); is {
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return false, nil
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}
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return true, nil
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}
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func (l *Label) isLabelOwner(s *xorm.Session, a web.Auth) (bool, error) {
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if _, is := a.(*LinkSharing); is {
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return false, nil
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}
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lorig, err := getLabelByIDSimple(s, l.ID)
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if err != nil {
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return false, err
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}
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return lorig.CreatedByID == a.GetID(), nil
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}
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// Helper method to check if a user can see a specific label
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func (l *Label) hasAccessToLabel(s *xorm.Session, a web.Auth) (has bool, maxRight int, err error) {
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if _, is := a.(*LinkSharing); is {
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return false, 0, nil
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}
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u, err := user.GetUserByID(s, a.GetID())
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if err != nil {
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return false, 0, err
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}
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cond := builder.In("label_tasks.task_id",
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builder.
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Select("id").
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From("tasks").
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Where(builder.In("list_id", getUserListsStatement(u.ID).Select("l.id"))),
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)
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ll := &LabelTask{}
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has, err = s.Table("labels").
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Select("label_tasks.*").
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Join("LEFT", "label_tasks", "label_tasks.label_id = labels.id").
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Where("label_tasks.label_id is not null OR labels.created_by_id = ?", u.ID).
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Or(cond).
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And("labels.id = ?", l.ID).
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Exist(ll)
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if err != nil {
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return
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}
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// Since the right depends on the task the label is associated with, we need to check that too.
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if ll.TaskID > 0 {
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t := &Task{ID: ll.TaskID}
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_, maxRight, err = t.CanRead(s, a)
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if err != nil {
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return
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}
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}
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return
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}
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