145 lines
4.4 KiB
Go
145 lines
4.4 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/web"
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"xorm.io/builder"
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"xorm.io/xorm"
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)
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// CanWrite checks if a user has write access to a namespace
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func (n *Namespace) CanWrite(s *xorm.Session, a web.Auth) (bool, error) {
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can, _, err := n.checkRight(s, a, RightWrite, RightAdmin)
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return can, err
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}
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// IsAdmin returns true or false if the user is admin on that namespace or not
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func (n *Namespace) IsAdmin(s *xorm.Session, a web.Auth) (bool, error) {
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is, _, err := n.checkRight(s, a, RightAdmin)
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return is, err
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}
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// CanRead checks if a user has read access to that namespace
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func (n *Namespace) CanRead(s *xorm.Session, a web.Auth) (bool, int, error) {
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return n.checkRight(s, a, RightRead, RightWrite, RightAdmin)
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}
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// CanUpdate checks if the user can update the namespace
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func (n *Namespace) CanUpdate(s *xorm.Session, a web.Auth) (bool, error) {
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return n.IsAdmin(s, a)
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}
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// CanDelete checks if the user can delete a namespace
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func (n *Namespace) CanDelete(s *xorm.Session, a web.Auth) (bool, error) {
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return n.IsAdmin(s, a)
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}
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// CanCreate checks if the user can create a new namespace
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func (n *Namespace) 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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// This is currently a dummy function, later on we could imagine global limits etc.
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return true, nil
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}
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func (n *Namespace) checkRight(s *xorm.Session, a web.Auth, rights ...Right) (bool, int, error) {
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// If the auth is a link share, don't do anything
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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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// Get the namespace and check the right
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nn, err := getNamespaceSimpleByID(s, n.ID)
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if err != nil {
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return false, 0, err
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}
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if a.GetID() == nn.OwnerID ||
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nn.ID == SharedListsPseudoNamespace.ID ||
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nn.ID == FavoritesPseudoNamespace.ID ||
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nn.ID == SavedFiltersPseudoNamespace.ID {
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return true, int(RightAdmin), nil
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}
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/*
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The following loop creates an sql condition like this one:
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namespaces.owner_id = 1 OR
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(users_namespace.user_id = 1 AND users_namespace.right = 1) OR
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(team_members.user_id = 1 AND team_namespaces.right = 1) OR
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for each passed right. That way, we can check with a single sql query (instead if 8)
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if the user has the right to see the list or not.
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*/
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var conds []builder.Cond
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conds = append(conds, builder.Eq{"namespaces.owner_id": a.GetID()})
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for _, r := range rights {
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// User conditions
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// If the namespace was shared directly with the user and the user has the right
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conds = append(conds, builder.And(
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builder.Eq{"users_namespace.user_id": a.GetID()},
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builder.Eq{"users_namespace.right": r},
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))
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// Team rights
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// If the namespace was shared directly with the team and the team has the right
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conds = append(conds, builder.And(
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builder.Eq{"team_members.user_id": a.GetID()},
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builder.Eq{"team_namespaces.right": r},
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))
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}
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type allRights struct {
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UserNamespace NamespaceUser `xorm:"extends"`
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TeamNamespace TeamNamespace `xorm:"extends"`
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}
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var maxRights = 0
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r := &allRights{}
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exists, err := s.
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Select("*").
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Table("namespaces").
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// User stuff
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Join("LEFT", "users_namespace", "users_namespace.namespace_id = namespaces.id").
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// Teams stuff
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Join("LEFT", "team_namespaces", "namespaces.id = team_namespaces.namespace_id").
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Join("LEFT", "team_members", "team_members.team_id = team_namespaces.team_id").
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// The actual condition
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Where(builder.And(
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builder.Or(
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conds...,
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),
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builder.Eq{"namespaces.id": n.ID},
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)).
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Exist(r)
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// Figure out the max right and return it
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if int(r.UserNamespace.Right) > maxRights {
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maxRights = int(r.UserNamespace.Right)
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}
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if int(r.TeamNamespace.Right) > maxRights {
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maxRights = int(r.TeamNamespace.Right)
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}
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return exists, maxRights, err
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}
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