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// Copyright 2020 The Gitea Authors. All rights reserved.
// Use of this source code is governed by a MIT-style
// license that can be found in the LICENSE file.
package models
import (
"fmt"
"code.gitea.io/gitea/modules/timeutil"
)
// Session represents a session compatible for go-chi session
type Session struct {
Key string `xorm:"pk CHAR(16)"` // has to be Key to match with go-chi/session
Data []byte `xorm:"BLOB"`
Expiry timeutil.TimeStamp // has to be Expiry to match with go-chi/session
}
// UpdateSession updates the session with provided id
func UpdateSession(key string, data []byte) error {
_, err := x.ID(key).Update(&Session{
Data: data,
Expiry: timeutil.TimeStampNow(),
})
return err
}
// ReadSession reads the data for the provided session
func ReadSession(key string) (*Session, error) {
session := Session{
Key: key,
}
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return nil, err
}
if has, err := sess.Get(&session); err != nil {
return nil, err
} else if !has {
session.Expiry = timeutil.TimeStampNow()
_, err := sess.Insert(&session)
if err != nil {
return nil, err
}
}
return &session, sess.Commit()
}
// ExistSession checks if a session exists
func ExistSession(key string) (bool, error) {
session := Session{
Key: key,
}
return x.Get(&session)
}
// DestroySession destroys a session
func DestroySession(key string) error {
_, err := x.Delete(&Session{
Key: key,
})
return err
}
// RegenerateSession regenerates a session from the old id
func RegenerateSession(oldKey, newKey string) (*Session, error) {
sess := x.NewSession()
defer sess.Close()
if err := sess.Begin(); err != nil {
return nil, err
}
if has, err := sess.Get(&Session{
Key: newKey,
}); err != nil {
return nil, err
} else if has {
return nil, fmt.Errorf("session Key: %s already exists", newKey)
}
if has, err := sess.Get(&Session{
Key: oldKey,
}); err != nil {
return nil, err
} else if !has {
_, err := sess.Insert(&Session{
Key: oldKey,
Expiry: timeutil.TimeStampNow(),
})
if err != nil {
return nil, err
}
}
if _, err := sess.Exec("UPDATE "+sess.Engine().TableName(&Session{})+" SET `key` = ? WHERE `key`=?", newKey, oldKey); err != nil {
return nil, err
}
s := Session{
Key: newKey,
}
if _, err := sess.Get(&s); err != nil {
return nil, err
}
return &s, sess.Commit()
}
// CountSessions returns the number of sessions
func CountSessions() (int64, error) {
return x.Count(&Session{})
}
// CleanupSessions cleans up expired sessions
func CleanupSessions(maxLifetime int64) error {
_, err := x.Where("expiry <= ?", timeutil.TimeStampNow().Add(-maxLifetime)).Delete(&Session{})
return err
}
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