forked from vikunja/vikunja
118 lines
3.7 KiB
Go
118 lines
3.7 KiB
Go
// Vikunja is a todo-list application to facilitate your life.
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// Copyright 2018 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 General Public License 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 General Public License for more details.
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//
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// You should have received a copy of the GNU General Public License
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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/log"
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"code.vikunja.io/web"
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"github.com/go-xorm/builder"
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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(a web.Auth) bool {
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u := getUserForRights(a)
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return n.isOwner(u) || n.checkRight(u, RightWrite, RightAdmin)
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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(a web.Auth) bool {
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u := getUserForRights(a)
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return n.isOwner(u) || n.checkRight(u, 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(a web.Auth) bool {
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return n.IsAdmin(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(a web.Auth) bool {
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return n.IsAdmin(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(a web.Auth) bool {
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// This is currently a dummy function, later on we could imagine global limits etc.
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return true
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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(a web.Auth) bool {
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u := getUserForRights(a)
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return n.isOwner(u) || n.checkRight(u, RightAdmin)
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}
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// Small helper function to check if a user owns the namespace
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func (n *Namespace) isOwner(user *User) bool {
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return n.OwnerID == user.ID
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}
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func (n *Namespace) checkRight(user *User, rights ...Right) bool {
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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": user.ID})
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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": user.ID},
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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": user.ID},
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builder.Eq{"team_namespaces.right": r},
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))
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}
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exists, err := x.Select("namespaces.*").
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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(&List{})
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if err != nil {
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log.Log.Error("Error occurred during checkRight for namespace: %s", err)
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return false
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}
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return exists
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}
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