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// Copyright 2017 Frédéric Guillot. All rights reserved.
// Use of this source code is governed by the Apache 2.0
// license that can be found in the LICENSE file.
package storage // import "miniflux.app/storage"
import (
"database/sql"
"fmt"
"miniflux.app/crypto"
"miniflux.app/model"
)
// CreateAppSessionWithUserPrefs creates a new application session with the given user preferences.
func (s *Storage) CreateAppSessionWithUserPrefs(userID int64) (*model.Session, error) {
user, err := s.UserByID(userID)
if err != nil {
return nil, err
}
session := model.Session{
ID: crypto.GenerateRandomString(32),
Data: &model.SessionData{
CSRF: crypto.GenerateRandomString(64),
Theme: user.Theme,
Language: user.Language,
},
}
return s.createAppSession(&session)
}
// CreateAppSession creates a new application session.
func (s *Storage) CreateAppSession() (*model.Session, error) {
session := model.Session{
ID: crypto.GenerateRandomString(32),
Data: &model.SessionData{
CSRF: crypto.GenerateRandomString(64),
},
}
return s.createAppSession(&session)
}
func (s *Storage) createAppSession(session *model.Session) (*model.Session, error) {
query := `INSERT INTO sessions (id, data) VALUES ($1, $2)`
_, err := s.db.Exec(query, session.ID, session.Data)
if err != nil {
return nil, fmt.Errorf(`store: unable to create app session: %v`, err)
}
return session, nil
}
// UpdateAppSessionField updates only one session field.
func (s *Storage) UpdateAppSessionField(sessionID, field string, value interface{}) error {
query := `
UPDATE
sessions
SET
data = jsonb_set(data, '{%s}', to_jsonb($1::text), true)
WHERE
id=$2
`
_, err := s.db.Exec(fmt.Sprintf(query, field), value, sessionID)
if err != nil {
return fmt.Errorf(`store: unable to update session field: %v`, err)
}
return nil
}
// AppSession returns the given session.
func (s *Storage) AppSession(id string) (*model.Session, error) {
var session model.Session
query := "SELECT id, data FROM sessions WHERE id=$1"
err := s.db.QueryRow(query, id).Scan(
&session.ID,
&session.Data,
)
switch {
case err == sql.ErrNoRows:
return nil, fmt.Errorf(`store: session not found: %s`, id)
case err != nil:
return nil, fmt.Errorf(`store: unable to fetch session: %v`, err)
default:
return &session, nil
}
}
// FlushAllSessions removes all sessions from the database.
func (s *Storage) FlushAllSessions() (err error) {
_, err = s.db.Exec(`DELETE FROM user_sessions`)
if err != nil {
return err
}
_, err = s.db.Exec(`DELETE FROM sessions`)
if err != nil {
return err
}
return nil
}
// CleanOldSessions removes sessions older than specified days.
func (s *Storage) CleanOldSessions(days int) int64 {
query := `
DELETE FROM
sessions
WHERE
id IN (SELECT id FROM sessions WHERE created_at < now() - interval '%d days')
`
result, err := s.db.Exec(fmt.Sprintf(query, days))
if err != nil {
return 0
}
n, _ := result.RowsAffected()
return n
}
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