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/*
* connect-better-sqlite3
*
* Copyright (c) 2010-2020 TJ Holowaychuk <tj@vision-media.ca>
* Copyright (c) 2011 tnantoka <bornneet@livedoor.com>
* Copyright (c) 2012 David Feinberg
* Copyright (c) 2021 Tor Andersson <tor@ccxvii.net>
*
* MIT Licensed
*/
"use strict";
module.exports = function (session) {
const SQLite = require('better-sqlite3');
function noop() {}
function now() { return Math.ceil(Date.now() / 1000); }
function seconds(date) { return Math.ceil(new Date(date).getTime() / 1000); }
class SQLiteStore extends session.Store {
constructor(options = {}) {
super(options);
let table = options.table || 'sessions';
let db_path = options.db || table;
if (db_path !== ':memory:')
db_path = (options.dir || '.') + '/' + db_path;
let db = new SQLite(db_path, options.mode);
db.pragma("journal_mode = WAL");
db.pragma("synchronous = OFF");
db.exec("CREATE TABLE IF NOT EXISTS "+table+" (sid PRIMARY KEY, expires INTEGER, sess TEXT) WITHOUT ROWID");
db.exec("DELETE FROM "+table+" WHERE "+now()+" > expires");
db.exec("VACUUM");
db.exec("PRAGMA wal_checkpoint(TRUNCATE)");
this.sql_destroy = db.prepare("DELETE FROM "+table+" WHERE sid = ?");
this.sql_get = db.prepare("SELECT sess FROM "+table+" WHERE sid = ? AND ? <= expires");
this.sql_set = db.prepare("INSERT OR REPLACE INTO "+table+" VALUES (?,?,?)");
this.sql_touch = db.prepare("UPDATE "+table+" SET expires = ? WHERE sid = ? AND expires < ?");
}
destroy(sid, cb = noop) {
try {
this.sql_destroy.run(sid);
cb(null);
} catch (err) {
cb(err);
}
}
get(sid, cb = noop) {
try {
let sess = this.sql_get.get(sid, now());
if (sess)
return cb(null, JSON.parse(sess.sess));
return cb(null, null);
} catch (err) {
return cb(err, null);
}
}
set(sid, sess, cb = noop) {
try {
let expires;
if (sess && sess.cookie && sess.cookie.expires)
expires = seconds(sess.cookie.expires);
else
expires = now() + 86400;
this.sql_set.run(sid, expires, JSON.stringify(sess));
cb(null);
} catch (err) {
cb(err);
}
}
touch(sid, sess, cb = noop) {
try {
if (sess && sess.cookie && sess.cookie.expires) {
let expires = seconds(sess.cookie.expires);
let limit = expires - 3600;
this.sql_touch.run(expires, sid, limit);
cb(null);
} else {
cb(null);
}
} catch (err) {
cb(err);
}
}
}
return SQLiteStore;
}
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