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qTox/src/historykeeper.cpp
2014-12-04 10:55:14 -06:00

418 lines
12 KiB
C++

/*
Copyright (C) 2014 by Project Tox <https://tox.im>
This file is part of qTox, a Qt-based graphical interface for Tox.
This program is libre software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
See the COPYING file for more details.
*/
#include "historykeeper.h"
#include "misc/settings.h"
#include "core.h"
#include <QSqlError>
#include <QFile>
#include <QDir>
#include <QSqlQuery>
#include <QVariant>
#include <QDebug>
#include <QTemporaryFile>
#include "misc/db/plaindb.h"
#include "misc/db/encrypteddb.h"
static HistoryKeeper *historyInstance = nullptr;
HistoryKeeper *HistoryKeeper::getInstance()
{
if (historyInstance == nullptr)
{
QList<QString> initLst;
initLst.push_back(QString("CREATE TABLE IF NOT EXISTS history (id INTEGER PRIMARY KEY AUTOINCREMENT, timestamp INTEGER NOT NULL, ") +
QString("chat_id INTEGER NOT NULL, sender INTEGER NOT NULL, message TEXT NOT NULL);"));
initLst.push_back(QString("CREATE TABLE IF NOT EXISTS aliases (id INTEGER PRIMARY KEY AUTOINCREMENT, user_id TEXT UNIQUE NOT NULL);"));
initLst.push_back(QString("CREATE TABLE IF NOT EXISTS chats (id INTEGER PRIMARY KEY AUTOINCREMENT, name TEXT UNIQUE NOT NULL, ctype INTEGER NOT NULL);"));
initLst.push_back(QString("CREATE TABLE IF NOT EXISTS sent_status (id INTEGER PRIMARY KEY AUTOINCREMENT, status INTEGER NOT NULL DEFAULT 0);"));
QString path(":memory:");
GenericDdInterface *dbIntf;
if (Settings::getInstance().getEnableLogging())
{
bool encrypted = Settings::getInstance().getEncryptLogs();
if (encrypted)
{
path = getHistoryPath();
dbIntf = new EncryptedDb(path, initLst);
historyInstance = new HistoryKeeper(dbIntf);
return historyInstance;
} else {
path = getHistoryPath();
}
}
dbIntf = new PlainDb(path, initLst);
historyInstance = new HistoryKeeper(dbIntf);
}
return historyInstance;
}
bool HistoryKeeper::checkPassword(int encrypted)
{
if (!Settings::getInstance().getEnableLogging() && (encrypted == -1))
return true;
if ((encrypted == 1) || (encrypted == -1 && Settings::getInstance().getEncryptLogs()))
return EncryptedDb::check(getHistoryPath(Settings::getInstance().getCurrentProfile(), encrypted));
return true;
}
HistoryKeeper::HistoryKeeper(GenericDdInterface *db_) :
db(db_)
{
/*
DB format
chats:
* name -> id map
id -- auto-incrementing number
name -- chat's name (for user to user conversation it is opposite user public key)
ctype -- chat type, reserved for group chats
alisases:
* user_id -> id map
id -- auto-incrementing number
name -- user's public key
history:
id -- auto-incrementing number
timestamp
chat_id -- current chat ID (resolves from chats table)
sender -- sender's ID (resolves from aliases table)
message
*/
// for old tables:
QSqlQuery ans = db->exec("select seq from sqlite_sequence where name=\"history\";");
if (ans.first())
{
int idMax = ans.value(0).toInt();
QSqlQuery ret = db->exec("select seq from sqlite_sequence where name=\"sent_status\";");
int idCur = 0;
if (ret.first())
{
idCur = ret.value(0).toInt();
}
if (idCur != idMax)
{
QString cmd = QString("INSERT INTO sent_status (id, status) VALUES (%1, 1);").arg(idMax);
db->exec(cmd);
}
}
updateChatsID();
updateAliases();
setSyncType(Settings::getInstance().getDbSyncType());
messageID = 0;
QSqlQuery sqlAnswer = db->exec("select seq from sqlite_sequence where name=\"history\";");
if (sqlAnswer.first())
messageID = sqlAnswer.value(0).toLongLong();
}
HistoryKeeper::~HistoryKeeper()
{
delete db;
}
qint64 HistoryKeeper::addChatEntry(const QString& chat, const QString& message, const QString& sender, const QDateTime &dt, bool isSent)
{
QList<QString> cmds = generateAddChatEntryCmd(chat, message, sender, dt, isSent);
db->exec("BEGIN TRANSACTION;");
for (auto &it : cmds)
db->exec(it);
db->exec("COMMIT TRANSACTION;");
messageID++;
return messageID;
}
QList<HistoryKeeper::HistMessage> HistoryKeeper::getChatHistory(HistoryKeeper::ChatType ct, const QString &chat,
const QDateTime &time_from, const QDateTime &time_to)
{
QList<HistMessage> res;
qint64 time64_from = time_from.toMSecsSinceEpoch();
qint64 time64_to = time_to.toMSecsSinceEpoch();
int chat_id = getChatID(chat, ct).first;
QSqlQuery dbAnswer;
if (ct == ctSingle)
{
dbAnswer = db->exec(QString("SELECT history.id, timestamp, user_id, message, status FROM history LEFT JOIN sent_status ON history.id = sent_status.id ") +
QString("INNER JOIN aliases ON history.sender = aliases.id AND timestamp BETWEEN %1 AND %2 AND chat_id = %3;")
.arg(time64_from).arg(time64_to).arg(chat_id));
} else {
// no groupchats yet
}
while (dbAnswer.next())
{
qint64 id = dbAnswer.value(0).toLongLong();
qint64 timeInt = dbAnswer.value(1).toLongLong();
QString sender = dbAnswer.value(2).toString();
QString message = unWrapMessage(dbAnswer.value(3).toString());
bool isSent = true;
if (!dbAnswer.value(4).isNull())
isSent = dbAnswer.value(4).toBool();
QDateTime time = QDateTime::fromMSecsSinceEpoch(timeInt);
res.push_back(HistMessage(id, "", sender, message, time, isSent));
}
return res;
}
QList<HistoryKeeper::HistMessage> HistoryKeeper::exportMessages()
{
QSqlQuery dbAnswer;
dbAnswer = db->exec(QString("SELECT history.id, timestamp, user_id, message, status, name FROM history LEFT JOIN sent_status ON history.id = sent_status.id ") +
QString("INNER JOIN aliases ON history.sender = aliases.id INNER JOIN chats ON history.chat_id = chats.id;"));
QList<HistMessage> res;
while (dbAnswer.next())
{
qint64 id = dbAnswer.value(0).toLongLong();
qint64 timeInt = dbAnswer.value(1).toLongLong();
QString sender = dbAnswer.value(2).toString();
QString message = unWrapMessage(dbAnswer.value(3).toString());
bool isSent = true;
if (!dbAnswer.value(4).isNull())
isSent = dbAnswer.value(4).toBool();
QString chat = dbAnswer.value(5).toString();
QDateTime time = QDateTime::fromMSecsSinceEpoch(timeInt);
res.push_back(HistMessage(id, chat, sender, message, time, isSent));
}
return res;
}
void HistoryKeeper::importMessages(const QList<HistoryKeeper::HistMessage> &lst)
{
db->exec("BEGIN TRANSACTION;");
for (const HistMessage &msg : lst)
{
QList<QString> cmds = generateAddChatEntryCmd(msg.chat, msg.message, msg.sender, msg.timestamp, msg.isSent);
for (auto &it : cmds)
db->exec(it);
messageID++;
}
db->exec("COMMIT TRANSACTION;");
}
QList<QString> HistoryKeeper::generateAddChatEntryCmd(const QString& chat, const QString& message, const QString& sender, const QDateTime &dt, bool isSent)
{
QList<QString> cmds;
int chat_id = getChatID(chat, ctSingle).first;
int sender_id = getAliasID(sender);
cmds.push_back(QString("INSERT INTO history (timestamp, chat_id, sender, message) VALUES (%1, %2, %3, '%4');")
.arg(dt.toMSecsSinceEpoch()).arg(chat_id).arg(sender_id).arg(wrapMessage(message)));
cmds.push_back(QString("INSERT INTO sent_status (status) VALUES (%1);").arg(isSent));
return cmds;
}
QString HistoryKeeper::wrapMessage(const QString &str)
{
QString wrappedMessage(str);
wrappedMessage.replace("'", "''");
return wrappedMessage;
}
QString HistoryKeeper::unWrapMessage(const QString &str)
{
QString unWrappedMessage(str);
unWrappedMessage.replace("''", "'");
return unWrappedMessage;
}
void HistoryKeeper::updateChatsID()
{
auto dbAnswer = db->exec(QString("SELECT * FROM chats;"));
chats.clear();
while (dbAnswer.next())
{
QString name = dbAnswer.value(1).toString();
int id = dbAnswer.value(0).toInt();
ChatType ctype = convertToChatType(dbAnswer.value(2).toInt());
chats[name] = {id, ctype};
}
}
void HistoryKeeper::updateAliases()
{
auto dbAnswer = db->exec(QString("SELECT * FROM aliases;"));
aliases.clear();
while (dbAnswer.next())
{
QString user_id = dbAnswer.value(1).toString();
int id = dbAnswer.value(0).toInt();
aliases[user_id] = id;
}
}
QPair<int, HistoryKeeper::ChatType> HistoryKeeper::getChatID(const QString &id_str, ChatType ct)
{
auto it = chats.find(id_str);
if (it != chats.end())
return it.value();
db->exec(QString("INSERT INTO chats (name, ctype) VALUES ('%1', '%2');").arg(id_str).arg(ct));
updateChatsID();
return getChatID(id_str, ct);
}
int HistoryKeeper::getAliasID(const QString &id_str)
{
auto it = aliases.find(id_str);
if (it != aliases.end())
return it.value();
db->exec(QString("INSERT INTO aliases (user_id) VALUES ('%1');").arg(id_str));
updateAliases();
return getAliasID(id_str);
}
void HistoryKeeper::resetInstance()
{
if (historyInstance == nullptr)
return;
delete historyInstance;
historyInstance = nullptr;
}
qint64 HistoryKeeper::addGroupChatEntry(const QString &chat, const QString &message, const QString &sender, const QDateTime &dt)
{
Q_UNUSED(chat)
Q_UNUSED(message)
Q_UNUSED(sender)
Q_UNUSED(dt)
// no groupchats yet
return -1;
}
HistoryKeeper::ChatType HistoryKeeper::convertToChatType(int ct)
{
if (ct < 0 || ct > 1)
return ctSingle;
return static_cast<ChatType>(ct);
}
QString HistoryKeeper::getHistoryPath(QString currentProfile, int encrypted)
{
QDir baseDir(Settings::getSettingsDirPath());
if (currentProfile.isEmpty())
currentProfile = Settings::getInstance().getCurrentProfile();
if (encrypted == 1 || (encrypted == -1 && Settings::getInstance().getEncryptLogs()))
return baseDir.filePath(currentProfile + ".qtox_history.encrypted");
else
return baseDir.filePath(currentProfile + ".qtox_history");
}
void HistoryKeeper::renameHistory(QString from, QString to)
{
resetInstance();
QFile fileEnc(QDir(Settings::getInstance().getSettingsDirPath()).filePath(from + ".qtox_history.encrypted"));
if (fileEnc.exists())
fileEnc.rename(QDir(Settings::getInstance().getSettingsDirPath()).filePath(to + ".qtox_history.encrypted"));
QFile filePlain(QDir(Settings::getInstance().getSettingsDirPath()).filePath(from + ".qtox_history"));
if (filePlain.exists())
filePlain.rename(QDir(Settings::getInstance().getSettingsDirPath()).filePath(to + ".qtox_history"));
}
void HistoryKeeper::markAsSent(int m_id)
{
db->exec(QString("UPDATE sent_status SET status = 1 WHERE id = %1;").arg(m_id));
}
void HistoryKeeper::setSyncType(Db::syncType sType)
{
QString syncCmd;
switch (sType) {
case Db::syncType::stFull:
syncCmd = "FULL";
break;
case Db::syncType::stNormal:
syncCmd = "NORMAL";
break;
case Db::syncType::stOff:
syncCmd = "OFF";
break;
default:
syncCmd = "FULL";
break;
}
db->exec(QString("PRAGMA synchronous=%1;").arg(syncCmd));
}
bool HistoryKeeper::isFileExist()
{
QString path = getHistoryPath();
QFile file(path);
return file.exists();
}
bool HistoryKeeper::removeHistory(int encrypted)
{
resetInstance();
QString path = getHistoryPath(QString(), encrypted);
QFile DbFile(path);
return DbFile.remove();
}
QList<HistoryKeeper::HistMessage> HistoryKeeper::exportMessagesDeleteFile(int encrypted)
{
auto msgs = getInstance()->exportMessages();
qDebug() << "HistoryKeeper: count" << msgs.size() << "messages exported";
if (!removeHistory(encrypted))
qWarning() << "HistoryKeeper: couldn't delete old log file!";
return msgs;
}