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#include "user.h"
#include <QCryptographicHash>
#include <QDebug>
#include <QRandomGenerator>
#include <QSqlError>
#include <QSqlQuery>
#include "constants.h"
#include "rsshit_db.h"
namespace rsshit {
QByteArray generateSalt()
{
constexpr qsizetype hashSizeBytes{32};
QByteArray saltArray{hashSizeBytes, char{0}};
auto generator = QRandomGenerator::global();
generator->fillRange((uint32_t *) saltArray.data(), hashSizeBytes);
return saltArray;
}
} // namespace rsshit
// FIXME: use better password hashing algo
User::User(const QString &login, const QString &password)
: m_login{login}
, m_salt{rsshit::generateSalt()}
, m_passwordHash{hashPassword(password)}
{
qDebug() << __func__ << "login:" << login;
qDebug() << __func__ << "salt size:" << m_salt.size();
qDebug() << __func__ << "passwordHash size:" << m_passwordHash.size();
}
User::User(const QString &login)
: m_login{login}
{
fetchFromDb();
}
// TODO: rename to `fetchFromDb` and fill all data?
int User::getDbId()
{
if (m_id != rsshit::db::IdNotFound)
return m_id;
const auto db = rsshit::db::open();
if (!db)
return rsshit::db::IdNotFound;
QSqlQuery selectQ{"select id from users where login=?"};
selectQ.addBindValue(m_login);
if (!selectQ.exec()) {
qWarning() << "cannot exec query" << selectQ.lastQuery() << ":"
<< selectQ.lastError().text();
return rsshit::db::IdNotFound;
}
if (!selectQ.next())
return rsshit::db::IdNotFound;
const auto idVariant = selectQ.value(rsshit::db::idTag);
if (!idVariant.isValid() || !idVariant.canConvert<int>())
return rsshit::db::IdNotFound;
bool ok{false};
const auto result = idVariant.toInt(&ok);
if (!ok) {
qWarning() << "got invalid id from db:" << idVariant;
return rsshit::db::IdNotFound;
}
if (m_id != result)
m_id = result;
return result;
}
int User::fetchFromDb()
{
const auto db = rsshit::db::open();
if (!db)
return rsshit::db::IdNotFound;
// ignore local `id` if exists, fetch all fields
QSqlQuery selectQ{"select id, login, salt, password_hash from users where login=?"};
selectQ.addBindValue(m_login);
if (!selectQ.exec()) {
qWarning() << "cannot exec query" << selectQ.lastQuery() << ":"
<< selectQ.lastError().text();
return rsshit::db::IdNotFound;
}
if (!selectQ.next())
return rsshit::db::IdNotFound;
const auto idVariant = selectQ.value(rsshit::db::idTag);
if (!idVariant.isValid() || !idVariant.canConvert<int>())
return rsshit::db::IdNotFound;
bool ok{false};
m_id = idVariant.toInt(&ok);
if (!ok) {
qWarning() << "got invalid id from db:" << idVariant;
return rsshit::db::IdNotFound;
}
if (m_id == rsshit::db::IdNotFound)
return m_id;
m_salt = selectQ.value(rsshit::db::saltTag).toByteArray();
m_passwordHash = selectQ.value(rsshit::db::passwordHashTag).toByteArray();
return m_id;
}
bool User::existsInDb()
{
return getDbId() != rsshit::db::IdNotFound;
}
int User::createInDb()
{
if (m_id != rsshit::db::IdNotFound)
return m_id;
const auto db = rsshit::db::open();
if (!db)
return rsshit::db::IdNotFound;
if (m_login.isEmpty() || m_salt.isEmpty() || m_passwordHash.isEmpty())
return rsshit::db::IdNotFound;
QSqlQuery insertQ{"insert into users(login, salt, password_hash) values(?, ?, ?)"};
insertQ.addBindValue(m_login);
insertQ.addBindValue(m_salt);
insertQ.addBindValue(m_passwordHash);
if (!insertQ.exec()) {
qWarning() << "cannot exec query" << insertQ.lastQuery() << ":"
<< insertQ.lastError().text();
return rsshit::db::IdNotFound;
}
m_id = insertQ.lastInsertId().toInt();
return m_id;
}
int User::getOrInsertDbId()
{
const auto id = getDbId();
if (id != rsshit::db::IdNotFound)
return id;
return createInDb();
}
bool User::verifyPassword(const QString &password)
{
return (!m_passwordHash.isEmpty()) && (hashPassword(password) == m_passwordHash);
}
QByteArray User::hashPassword(const QString &password)
{
return QCryptographicHash::hash(m_salt + password.toUtf8(), QCryptographicHash::Sha256);
}
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