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// Copyright (c) 2018-present Mattermost, Inc. All Rights Reserved.
// See License.txt for license information.
package app
import (
"bufio"
"encoding/json"
"fmt"
"io"
"github.com/mattermost/mattermost-server/model"
"github.com/pkg/errors"
)
const permissionsExportBatchSize = 100
func (a *App) ResetPermissionsSystem() *model.AppError {
// Reset all Teams to not have a scheme.
if result := <-a.Srv.Store.Team().ResetAllTeamSchemes(); result.Err != nil {
return result.Err
}
// Reset all Channels to not have a scheme.
if result := <-a.Srv.Store.Channel().ResetAllChannelSchemes(); result.Err != nil {
return result.Err
}
// Purge all schemes from the database.
if result := <-a.Srv.Store.Scheme().PermanentDeleteAll(); result.Err != nil {
return result.Err
}
// Purge all roles from the database.
if result := <-a.Srv.Store.Role().PermanentDeleteAll(); result.Err != nil {
return result.Err
}
// Remove the "System" table entry that marks the advanced permissions migration as done.
if result := <-a.Srv.Store.System().PermanentDeleteByName(ADVANCED_PERMISSIONS_MIGRATION_KEY); result.Err != nil {
return result.Err
}
// Now that the permissions system has been reset, re-run the migration to reinitialise it.
a.DoAdvancedPermissionsMigration()
a.DoEmojisPermissionsMigration()
return nil
}
func (a *App) ExportPermissions(w io.Writer) error {
next := a.SchemesIterator(permissionsExportBatchSize)
var schemeBatch []*model.Scheme
for schemeBatch = next(); len(schemeBatch) > 0; schemeBatch = next() {
for _, scheme := range schemeBatch {
roleNames := []string{
scheme.DefaultTeamAdminRole,
scheme.DefaultTeamUserRole,
scheme.DefaultChannelAdminRole,
scheme.DefaultChannelUserRole,
}
roles := []*model.Role{}
for _, roleName := range roleNames {
if len(roleName) == 0 {
continue
}
role, err := a.GetRoleByName(roleName)
if err != nil {
return err
}
roles = append(roles, role)
}
schemeExport, err := json.Marshal(&model.SchemeConveyor{
Name: scheme.Name,
DisplayName: scheme.DisplayName,
Description: scheme.Description,
Scope: scheme.Scope,
TeamAdmin: scheme.DefaultTeamAdminRole,
TeamUser: scheme.DefaultTeamUserRole,
ChannelAdmin: scheme.DefaultChannelAdminRole,
ChannelUser: scheme.DefaultChannelUserRole,
Roles: roles,
})
if err != nil {
return err
}
schemeExport = append(schemeExport, []byte("\n")...)
_, err = w.Write(schemeExport)
if err != nil {
return err
}
}
}
return nil
}
func (a *App) ImportPermissions(jsonl io.Reader) error {
createdSchemeIDs := []string{}
scanner := bufio.NewScanner(jsonl)
for scanner.Scan() {
var schemeConveyor *model.SchemeConveyor
err := json.Unmarshal(scanner.Bytes(), &schemeConveyor)
if err != nil {
return err
}
// Create the new Scheme. The new Roles are created automatically.
var appErr *model.AppError
schemeCreated, appErr := a.CreateScheme(schemeConveyor.Scheme())
if appErr != nil {
return errors.New(appErr.Message)
}
createdSchemeIDs = append(createdSchemeIDs, schemeCreated.Id)
schemeIn := schemeConveyor.Scheme()
roleNameTuples := [][]string{
{schemeCreated.DefaultTeamAdminRole, schemeIn.DefaultTeamAdminRole},
{schemeCreated.DefaultTeamUserRole, schemeIn.DefaultTeamUserRole},
{schemeCreated.DefaultChannelAdminRole, schemeIn.DefaultChannelAdminRole},
{schemeCreated.DefaultChannelUserRole, schemeIn.DefaultChannelUserRole},
}
for _, roleNameTuple := range roleNameTuples {
if len(roleNameTuple[0]) == 0 || len(roleNameTuple[1]) == 0 {
continue
}
err = updateRole(a, schemeConveyor, roleNameTuple[0], roleNameTuple[1])
if err != nil {
// Delete the new Schemes. The new Roles are deleted automatically.
for _, schemeID := range createdSchemeIDs {
a.DeleteScheme(schemeID)
}
return err
}
}
}
if err := scanner.Err(); err != nil {
return err
}
return nil
}
func updateRole(a *App, sc *model.SchemeConveyor, roleCreatedName, defaultRoleName string) error {
var err *model.AppError
roleCreated, err := a.GetRoleByName(roleCreatedName)
if err != nil {
return errors.New(err.Message)
}
var roleIn *model.Role
for _, role := range sc.Roles {
if role.Name == defaultRoleName {
roleIn = role
break
}
}
roleCreated.DisplayName = roleIn.DisplayName
roleCreated.Description = roleIn.Description
roleCreated.Permissions = roleIn.Permissions
_, err = a.UpdateRole(roleCreated)
if err != nil {
return errors.New(fmt.Sprintf("%v: %v\n", err.Message, err.DetailedError))
}
return nil
}
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