vikunja-api/pkg/models/label_task_rights.go

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// Vikunja is a to-do list application to facilitate your life.
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// Copyright 2018-2020 Vikunja and contributors. All rights reserved.
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//
// This program is free software: you can redistribute it and/or modify
// it under the terms of the GNU General Public License as published by
// the Free Software Foundation, either version 3 of the License, or
// (at your option) any later version.
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//
// This program is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
// GNU General Public License for more details.
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//
// You should have received a copy of the GNU General Public License
// along with this program. If not, see <https://www.gnu.org/licenses/>.
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package models
import (
"code.vikunja.io/web"
)
// CanCreate checks if a user can add a label to a task
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func (lt *LabelTask) CanCreate(a web.Auth) (bool, error) {
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label, err := getLabelByIDSimple(lt.LabelID)
if err != nil {
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return false, err
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}
hasAccessTolabel, _, err := label.hasAccessToLabel(a)
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if err != nil || !hasAccessTolabel { // If the user doesn't have access to the label, we can error out here
return false, err
}
canDoLabelTask, err := canDoLabelTask(lt.TaskID, a)
if err != nil {
return false, err
}
return hasAccessTolabel && canDoLabelTask, nil
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}
// CanDelete checks if a user can delete a label from a task
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func (lt *LabelTask) CanDelete(a web.Auth) (bool, error) {
canDoLabelTask, err := canDoLabelTask(lt.TaskID, a)
if err != nil {
return false, err
}
if !canDoLabelTask {
return false, nil
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}
// We don't care here if the label exists or not. The only relevant thing here is if the relation already exists,
// throw an error.
exists, err := x.Exist(&LabelTask{LabelID: lt.LabelID, TaskID: lt.TaskID})
if err != nil {
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return false, err
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}
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return exists, err
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}
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// CanCreate determines if a user can update a labeltask
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func (ltb *LabelTaskBulk) CanCreate(a web.Auth) (bool, error) {
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return canDoLabelTask(ltb.TaskID, a)
}
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// Helper function to check if a user can write to a task
// + is able to see the label
// always the same check for either deleting or adding a label to a task
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func canDoLabelTask(taskID int64, a web.Auth) (bool, error) {
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// A user can add a label to a task if he can write to the task
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task, err := GetTaskByIDSimple(taskID)
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if err != nil {
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return false, err
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}
return task.CanUpdate(a)
}