X-Git-Url: https://git.quassel-irc.org/?p=quassel.git;a=blobdiff_plain;f=src%2Fcore%2Fsqlitestorage.cpp;h=3c61f985d4f134c79b5cd4d9ed90deaede96d945;hp=52846cdac6b4b761539875d234f072c2be06dc53;hb=f6e0e4c958187792081b397795eb2ee7de294c23;hpb=d367ab103f7c201efc9f82e9e32da43ab71da2ac

diff --git a/src/core/sqlitestorage.cpp b/src/core/sqlitestorage.cpp
index 52846cda..3c61f985 100644
--- a/src/core/sqlitestorage.cpp
+++ b/src/core/sqlitestorage.cpp
@@ -22,389 +22,570 @@
 
 #include <QtSql>
 
-SqliteStorage::SqliteStorage() {
-  logMessageQuery = NULL;
-  addSenderQuery = NULL;
-  getLastMessageIdQuery = NULL;
-  requestMsgsQuery = NULL;
-  requestMsgsOffsetQuery = NULL;
-  requestMsgsSinceQuery = NULL;
-  requestMsgsSinceOffsetQuery = NULL;
-  requestMsgRangeQuery = NULL;
-  createNetworkQuery = NULL;
-  createBufferQuery = NULL;
-  getBufferInfoQuery = NULL;
+#include "network.h"
+
+SqliteStorage::SqliteStorage(QObject *parent)
+  : AbstractSqlStorage(parent)
+{
 }
 
 SqliteStorage::~SqliteStorage() {
-  if (logMessageQuery) delete logMessageQuery;
-  if (addSenderQuery) delete addSenderQuery;
-  if (getLastMessageIdQuery) delete getLastMessageIdQuery;
-  if (requestMsgsQuery) delete requestMsgsQuery;
-  if (requestMsgsOffsetQuery) delete requestMsgsOffsetQuery;
-  if (requestMsgsSinceQuery) delete requestMsgsSinceQuery;
-  if (requestMsgsSinceOffsetQuery) delete requestMsgsSinceOffsetQuery;
-  if (requestMsgRangeQuery) delete requestMsgRangeQuery;
-  if (createNetworkQuery) delete createNetworkQuery;
-  if (createBufferQuery) delete createBufferQuery;
-  if (getBufferInfoQuery) delete getBufferInfoQuery;
-  
-  logDb.close();
 }
 
-bool SqliteStorage::isAvailable() {
+bool SqliteStorage::isAvailable() const {
   if(!QSqlDatabase::isDriverAvailable("QSQLITE")) return false;
   return true;
 }
 
-QString SqliteStorage::displayName() {
-  return QString("SQlite");
+QString SqliteStorage::displayName() const {
+  return QString("SQLite");
 }
 
-bool SqliteStorage::setup(const QVariantMap &settings) {
-  bool ok;
-  // this extra scope is needed to be able to remove the database connection later
-  {
-    logDb = QSqlDatabase::addDatabase("QSQLITE", "quassel_setup");
-    logDb.setDatabaseName(SqliteStorage::backlogFile(true));
-    ok = logDb.open();
-    
-    if (!ok) {
-      qWarning(tr("Could not open backlog database: %1").arg(logDb.lastError().text()).toAscii());
-    } else {
-      logDb.exec("CREATE TABLE quasseluser ("
-	             "userid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "username TEXT UNIQUE NOT NULL,"
-	             "password BLOB NOT NULL)");
-	  
-      logDb.exec("CREATE TABLE sender ("
-	             "senderid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "sender TEXT UNIQUE NOT NULL)");
-	  
-      logDb.exec("CREATE TABLE network ("
-	             "networkid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "userid INTEGER NOT NULL,"
-	             "networkname TEXT NOT NULL,"
-	             "UNIQUE (userid, networkname))");
-	  
-      logDb.exec("CREATE TABLE buffergroup ("
-	             "groupid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "userid INTEGER NOT NULL,"
-	             "displayname TEXT)");
-	  
-      logDb.exec("CREATE TABLE buffer ("
-	             "bufferid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "userid INTEGER NOT NULL,"
-	             "groupid INTEGER,"
-	             "networkid INTEGER NOT NULL,"
-	             "buffername TEXT NOT NULL)");
-	  
-      logDb.exec("CREATE UNIQUE INDEX buffer_idx "
-	             "ON buffer(userid, networkid, buffername)");
-	    
-      logDb.exec("CREATE TABLE backlog ("
-	             "messageid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "time INTEGER NOT NULL,"
-	             "bufferid INTEGER NOT NULL,"
-	             "type INTEGER NOT NULL,"
-	             "flags INTEGER NOT NULL,"
-	             "senderid INTEGER NOT NULL,"
-	             "message TEXT)");
-	  
-      logDb.exec("CREATE TABLE coreinfo ("
-	             "updateid INTEGER NOT NULL PRIMARY KEY AUTOINCREMENT,"
-	             "version INTEGER NOT NULL)");
-	  
-      logDb.exec("INSERT INTO coreinfo (version) VALUES (0)");
-      
-      // something fucked up -> no logging possible
-      // FIXME logDb.lastError is reset whenever exec is called
-      if(logDb.lastError().isValid()) { 
-        qWarning(tr("Could not create backlog table: %1").arg(logDb.lastError().text()).toAscii());
-        qWarning(tr("Disabling logging...").toAscii());
-        Q_ASSERT(false); // quassel does require logging
-        ok = false;
-      }
-    
-      logDb.close();
-    }
-  } 
-  
-  QSqlDatabase::removeDatabase("quassel_setup");
-  return ok;
+QString SqliteStorage::description() const {
+  return tr("SQLite is a file-based database engine that does not require any setup. It is suitable for small and medium-sized "
+            "databases that do not require access via network. Use SQLite if your Quassel Core should store its data on the same machine "
+            "it is running on, and if you only expect a few users to use your core.");
 }
 
-bool SqliteStorage::init(const QVariantMap &settings) {
-  bool ok;
-  // i need the extra scope to be able to remove the database connection
-  {
-    logDb = QSqlDatabase::database("quassel_connection", false);
-    if (!logDb.isValid()) {
-      logDb = QSqlDatabase::addDatabase("QSQLITE", "quassel_connection");
-    }
-    logDb.setDatabaseName(SqliteStorage::backlogFile());
-    ok = logDb.open();
-    if (!ok) {
-      qWarning(tr("Could not open backlog database: %1").arg(logDb.lastError().text()).toAscii());
-    }
-  }
-
-  if (!ok) {
-    //QSqlDatabase::removeDatabase("quassel_connection");
-    return false;
-  }
+int SqliteStorage::installedSchemaVersion() {
+  QSqlQuery query = logDb().exec("SELECT value FROM coreinfo WHERE key = 'schemaversion'");
+  if(query.first())
+    return query.value(0).toInt();
 
-  // check if the db schema is up to date
-  QSqlQuery query = logDb.exec("SELECT MAX(version) FROM coreinfo");
-  if(query.first()) {
-    // TODO VersionCheck
-    //checkVersion(query.value(0));
-    qDebug() << "Sqlite is ready. Quassel Schema Version:" << query.value(0).toUInt();
-  } else {
-    qWarning("Sqlite is not ready!");
-    return false;
-  }
+  // maybe it's really old... (schema version 0)
+  query = logDb().exec("SELECT MAX(version) FROM coreinfo");
+  if(query.first())
+    return query.value(0).toInt();
 
-  // we will need those pretty often... so let's speed things up:
-  createBufferQuery = new QSqlQuery(logDb);
-  createBufferQuery->prepare("INSERT INTO buffer (userid, networkid, buffername) VALUES (:userid, (SELECT networkid FROM network WHERE networkname = :networkname AND userid = :userid2), :buffername)");
-
-  createNetworkQuery = new QSqlQuery(logDb);
-  createNetworkQuery->prepare("INSERT INTO network (userid, networkname) VALUES (:userid, :networkname)");
-
-  getBufferInfoQuery = new QSqlQuery(logDb);
-  getBufferInfoQuery->prepare("SELECT bufferid FROM buffer "
-                            "JOIN network ON buffer.networkid = network.networkid "
-                            "WHERE network.networkname = :networkname AND network.userid = :userid AND buffer.userid = :userid2 AND lower(buffer.buffername) = lower(:buffername)");
-
-  logMessageQuery = new QSqlQuery(logDb);
-  logMessageQuery->prepare("INSERT INTO backlog (time, bufferid, type, flags, senderid, message) "
-                           "VALUES (:time, :bufferid, :type, :flags, (SELECT senderid FROM sender WHERE sender = :sender), :message)");
-
-  addSenderQuery = new QSqlQuery(logDb);
-  addSenderQuery->prepare("INSERT INTO sender (sender) VALUES (:sender)");
-
-  getLastMessageIdQuery = new QSqlQuery(logDb);
-  getLastMessageIdQuery->prepare("SELECT messageid FROM backlog "
-                                 "WHERE time = :time AND bufferid = :bufferid AND type = :type AND senderid = (SELECT senderid FROM sender WHERE sender = :sender)");
-
-  requestMsgsOffsetQuery = new QSqlQuery(logDb);
-  requestMsgsOffsetQuery->prepare("SELECT count(*) FROM backlog WHERE bufferid = :bufferid AND messageid < :messageid");
-
-  requestMsgsQuery = new QSqlQuery(logDb);
-  requestMsgsQuery->prepare("SELECT messageid, time,  type, flags, sender, message, displayname "
-                            "FROM backlog "
-                            "JOIN buffer ON backlog.bufferid = buffer.bufferid "
-                            "JOIN sender ON backlog.senderid = sender.senderid "
-                            "LEFT JOIN buffergroup ON buffer.groupid = buffergroup.groupid "
-                            "WHERE buffer.bufferid = :bufferid OR buffer.groupid = (SELECT groupid FROM buffer WHERE bufferid = :bufferid2) "
-                            "ORDER BY messageid DESC "
-                            "LIMIT :limit OFFSET :offset");
-
-  requestMsgsSinceOffsetQuery = new QSqlQuery(logDb);
-  requestMsgsSinceOffsetQuery->prepare("SELECT count(*) FROM backlog WHERE bufferid = :bufferid AND time >= :since");
-
-  requestMsgsSinceQuery = new QSqlQuery(logDb);
-  requestMsgsSinceQuery->prepare("SELECT messageid, time,  type, flags, sender, message, displayname "
-                                 "FROM backlog "
-                                 "JOIN buffer ON backlog.bufferid = buffer.bufferid "
-                                 "JOIN sender ON backlog.senderid = sender.senderid "
-                                 "LEFT JOIN buffergroup ON buffer.groupid = buffergroup.groupid "
-                                 "WHERE (buffer.bufferid = :bufferid OR buffer.groupid = (SELECT groupid FROM buffer WHERE bufferid = :bufferid2)) AND "
-                                 "backlog.time >= :since "
-                                 "ORDER BY messageid DESC "
-                                 "LIMIT -1 OFFSET :offset");
-
-  requestMsgRangeQuery = new QSqlQuery(logDb);
-  requestMsgRangeQuery->prepare("SELECT messageid, time,  type, flags, sender, message, displayname "
-                                "FROM backlog "
-                                "JOIN buffer ON backlog.bufferid = buffer.bufferid "
-                                "JOIN sender ON backlog.senderid = sender.senderid "
-                                "LEFT JOIN buffergroup ON buffer.groupid = buffergroup.groupid "
-                                "WHERE (buffer.bufferid = :bufferid OR buffer.groupid = (SELECT groupid FROM buffer WHERE bufferid = :bufferid2)) AND "
-                                "backlog.messageid >= :firstmsg AND backlog.messageid <= :lastmsg "
-                                "ORDER BY messageid DESC ");
-  
-  return true;
+  return AbstractSqlStorage::installedSchemaVersion();
 }
 
 UserId SqliteStorage::addUser(const QString &user, const QString &password) {
-  QByteArray cryptopass = QCryptographicHash::hash(password.toUtf8(), QCryptographicHash::Sha1);
-  cryptopass = cryptopass.toHex();
-
-  QSqlQuery query(logDb);
-  query.prepare("INSERT INTO quasseluser (username, password) VALUES (:username, :password)");
+  QSqlQuery query(logDb());
+  query.prepare(queryString("insert_quasseluser"));
   query.bindValue(":username", user);
-  query.bindValue(":password", cryptopass);
+  query.bindValue(":password", cryptedPassword(password));
   query.exec();
   if(query.lastError().isValid() && query.lastError().number() == 19) { // user already exists - sadly 19 seems to be the general constraint violation error...
     return 0;
   }
 
-  query.prepare("SELECT userid FROM quasseluser WHERE username = :username");
+  query.prepare(queryString("select_userid"));
   query.bindValue(":username", user);
   query.exec();
   query.first();
-  UserId uid = query.value(0).toUInt();
+  UserId uid = query.value(0).toInt();
   emit userAdded(uid, user);
   return uid;
 }
 
 void SqliteStorage::updateUser(UserId user, const QString &password) {
-  QByteArray cryptopass = QCryptographicHash::hash(password.toUtf8(), QCryptographicHash::Sha1);
-  cryptopass = cryptopass.toHex();
-
-  QSqlQuery query(logDb);
-  query.prepare("UPDATE quasseluser SET password = :password WHERE userid = :userid");
-  query.bindValue(":userid", user);
-  query.bindValue(":password", cryptopass);
+  QSqlQuery query(logDb());
+  query.prepare(queryString("update_userpassword"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":password", cryptedPassword(password));
   query.exec();
 }
 
 void SqliteStorage::renameUser(UserId user, const QString &newName) {
-  QSqlQuery query(logDb);
-  query.prepare("UPDATE quasseluser SET username = :username WHERE userid = :userid");
-  query.bindValue(":userid", user);
+  QSqlQuery query(logDb());
+  query.prepare(queryString("update_username"));
+  query.bindValue(":userid", user.toInt());
   query.bindValue(":username", newName);
   query.exec();
   emit userRenamed(user, newName);
 }
 
 UserId SqliteStorage::validateUser(const QString &user, const QString &password) {
-  QByteArray cryptopass = QCryptographicHash::hash(password.toUtf8(), QCryptographicHash::Sha1);
-  cryptopass = cryptopass.toHex();
-
-  QSqlQuery query(logDb);
-  query.prepare("SELECT userid FROM quasseluser WHERE username = :username AND password = :password");
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_authuser"));
   query.bindValue(":username", user);
-  query.bindValue(":password", cryptopass);
+  query.bindValue(":password", cryptedPassword(password));
   query.exec();
 
   if(query.first()) {
-    return query.value(0).toUInt();
+    return query.value(0).toInt();
   } else {
-    throw AuthError();
-    //return 0;
+    return 0;
   }
 }
 
 void SqliteStorage::delUser(UserId user) {
-  QSqlQuery query(logDb);
-  query.prepare("DELETE FROM backlog WHERE bufferid IN (SELECT DISTINCT bufferid FROM buffer WHERE userid = :userid");
-  query.bindValue(":userid", user);
-  query.exec();
-  query.prepare("DELETE FROM buffer WHERE userid = :userid");
-  query.bindValue(":userid", user);
+  QSqlQuery query(logDb());
+  query.prepare(queryString("delete_backlog_by_uid"));
+  query.bindValue(":userid", user.toInt());
   query.exec();
-  query.prepare("DELETE FROM buffergroup WHERE userid = :userid");
-  query.bindValue(":userid", user);
+  
+  query.prepare(queryString("delete_buffers_by_uid"));
+  query.bindValue(":userid", user.toInt());
   query.exec();
-  query.prepare("DELETE FROM network WHERE userid = :userid");
-  query.bindValue(":userid", user);
+  
+  query.prepare(queryString("delete_networks_by_uid"));
+  query.bindValue(":userid", user.toInt());
   query.exec();
-  query.prepare("DELETE FROM quasseluser WHERE userid = :userid");
-  query.bindValue(":userid", user);
+  
+  query.prepare(queryString("delete_quasseluser"));
+  query.bindValue(":userid", user.toInt());
   query.exec();
   // I hate the lack of foreign keys and on delete cascade... :(
   emit userRemoved(user);
 }
 
-void SqliteStorage::createBuffer(UserId user, const QString &network, const QString &buffer) {
-  createBufferQuery->bindValue(":userid", user);
-  createBufferQuery->bindValue(":userid2", user);  // Qt can't handle same placeholder twice (maybe sqlites fault)
-  createBufferQuery->bindValue(":networkname", network);
-  createBufferQuery->bindValue(":buffername", buffer);
-  createBufferQuery->exec();
-
-  if(createBufferQuery->lastError().isValid()) {
-    if(createBufferQuery->lastError().number() == 19) { // Null Constraint violation 
-      createNetworkQuery->bindValue(":userid", user);
-      createNetworkQuery->bindValue(":networkname", network);
-      createNetworkQuery->exec();
-      createBufferQuery->exec();
-      Q_ASSERT(!createNetworkQuery->lastError().isValid());
-      Q_ASSERT(!createBufferQuery->lastError().isValid());
-    } else {
-      // do panic!
-      qDebug() << "failed to create Buffer: ErrNo:" << createBufferQuery->lastError().number() << "ErrMsg:" << createBufferQuery->lastError().text();
-      Q_ASSERT(false);
+NetworkId SqliteStorage::createNetwork(UserId user, const NetworkInfo &info) {
+  NetworkId networkId;
+  QSqlQuery query(logDb());
+  query.prepare(queryString("insert_network"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkname", info.networkName);
+  query.exec();
+  
+  networkId = getNetworkId(user, info.networkName);
+  if(!networkId.isValid()) {
+    watchQuery(&query);
+  } else {
+    updateNetwork(user, info);
+  }
+  return networkId;
+}
+
+bool SqliteStorage::updateNetwork(UserId user, const NetworkInfo &info) {
+  if(!isValidNetwork(user, info.networkId))
+     return false;
+  
+  QSqlQuery updateQuery(logDb());
+  updateQuery.prepare(queryString("update_network"));
+  updateQuery.bindValue(":networkname", info.networkName);
+  updateQuery.bindValue(":identityid", info.identity.toInt());
+  updateQuery.bindValue(":usecustomencoding", info.useCustomEncodings ? 1 : 0);
+  updateQuery.bindValue(":encodingcodec", QString(info.codecForEncoding));
+  updateQuery.bindValue(":decodingcodec", QString(info.codecForDecoding));
+  updateQuery.bindValue(":servercodec", QString(info.codecForServer));
+  updateQuery.bindValue(":userandomserver", info.useRandomServer ? 1 : 0);
+  updateQuery.bindValue(":perform", info.perform.join("\n"));
+  updateQuery.bindValue(":useautoidentify", info.useAutoIdentify ? 1 : 0);
+  updateQuery.bindValue(":autoidentifyservice", info.autoIdentifyService);
+  updateQuery.bindValue(":autoidentifypassword", info.autoIdentifyPassword);
+  updateQuery.bindValue(":useautoreconnect", info.useAutoReconnect ? 1 : 0);
+  updateQuery.bindValue(":autoreconnectinterval", info.autoReconnectInterval);
+  updateQuery.bindValue(":autoreconnectretries", info.autoReconnectRetries);
+  updateQuery.bindValue(":unlimitedconnectretries", info.unlimitedReconnectRetries ? 1 : 0);
+  updateQuery.bindValue(":rejoinchannels", info.rejoinChannels ? 1 : 0);
+  updateQuery.bindValue(":networkid", info.networkId.toInt());
+  updateQuery.exec();
+  if(!watchQuery(&updateQuery))
+    return false;
+
+  QSqlQuery dropServersQuery(logDb());
+  dropServersQuery.prepare("DELETE FROM ircserver WHERE networkid = :networkid");
+  dropServersQuery.bindValue(":networkid", info.networkId.toInt());
+  dropServersQuery.exec();
+  if(!watchQuery(&dropServersQuery))
+    return false;
+
+  QSqlQuery insertServersQuery(logDb());
+  insertServersQuery.prepare(queryString("insert_server"));
+  foreach(QVariant server_, info.serverList) {
+    QVariantMap server = server_.toMap();
+    insertServersQuery.bindValue(":hostname", server["Host"]);
+    insertServersQuery.bindValue(":port", server["Port"].toInt());
+    insertServersQuery.bindValue(":password", server["Password"]);
+    insertServersQuery.bindValue(":ssl", server["UseSSL"].toBool() ? 1 : 0);
+    insertServersQuery.bindValue(":userid", user.toInt());
+    insertServersQuery.bindValue(":networkid", info.networkId.toInt());
+
+    insertServersQuery.exec();
+    if(!watchQuery(&insertServersQuery))
+      return false;
+  }
+  
+  return true;
+}
+
+bool SqliteStorage::removeNetwork(UserId user, const NetworkId &networkId) {
+  if(!isValidNetwork(user, networkId))
+     return false;
+
+  bool withTransaction = logDb().driver()->hasFeature(QSqlDriver::Transactions);
+  if(withTransaction) {
+    sync();
+    if(!logDb().transaction()) {
+      qWarning() << "SqliteStorage::removeNetwork(): cannot start transaction. continuing with out rollback support!";
+      withTransaction = false;
+    }
+  }
+  
+  QSqlQuery deleteBacklogQuery(logDb());
+  deleteBacklogQuery.prepare(queryString("delete_backlog_for_network"));
+  deleteBacklogQuery.bindValue(":networkid", networkId.toInt());
+  deleteBacklogQuery.exec();
+  if(!watchQuery(&deleteBacklogQuery)) {
+    if(withTransaction)
+      logDb().rollback();
+    return false;
+  }
+  
+  QSqlQuery deleteBuffersQuery(logDb());
+  deleteBuffersQuery.prepare(queryString("delete_buffers_for_network"));
+  deleteBuffersQuery.bindValue(":networkid", networkId.toInt());
+  deleteBuffersQuery.exec();
+  if(!watchQuery(&deleteBuffersQuery)) {
+    if(withTransaction)
+      logDb().rollback();
+    return false;
+  }
+  
+  QSqlQuery deleteServersQuery(logDb());
+  deleteServersQuery.prepare(queryString("delete_ircservers_for_network"));
+  deleteServersQuery.bindValue(":networkid", networkId.toInt());
+  deleteServersQuery.exec();
+  if(!watchQuery(&deleteServersQuery)) {
+    if(withTransaction)
+      logDb().rollback();
+    return false;
+  }
+  
+  QSqlQuery deleteNetworkQuery(logDb());
+  deleteNetworkQuery.prepare(queryString("delete_network"));
+  deleteNetworkQuery.bindValue(":networkid", networkId.toInt());
+  deleteNetworkQuery.exec();
+  if(!watchQuery(&deleteNetworkQuery)) {
+    if(withTransaction)
+      logDb().rollback();
+    return false;
+  }
+
+  logDb().commit();
+  return true;
+}
+
+QList<NetworkInfo> SqliteStorage::networks(UserId user) {
+  QList<NetworkInfo> nets;
+
+  QSqlQuery networksQuery(logDb());
+  networksQuery.prepare(queryString("select_networks_for_user"));
+  networksQuery.bindValue(":userid", user.toInt());
+  
+  QSqlQuery serversQuery(logDb());
+  serversQuery.prepare(queryString("select_servers_for_network"));
+
+  networksQuery.exec();
+  if(!watchQuery(&networksQuery))
+    return nets;
+
+  while(networksQuery.next()) {
+    NetworkInfo net;
+    net.networkId = networksQuery.value(0).toInt();
+    net.networkName = networksQuery.value(1).toString();
+    net.identity = networksQuery.value(2).toInt();
+    net.codecForServer = networksQuery.value(3).toString().toAscii();
+    net.codecForEncoding = networksQuery.value(4).toString().toAscii();
+    net.codecForDecoding = networksQuery.value(5).toString().toAscii();
+    net.useRandomServer = networksQuery.value(6).toInt() == 1 ? true : false;
+    net.perform = networksQuery.value(7).toString().split("\n");
+    net.useAutoIdentify = networksQuery.value(8).toInt() == 1 ? true : false;
+    net.autoIdentifyService = networksQuery.value(9).toString();
+    net.autoIdentifyPassword = networksQuery.value(10).toString();
+    net.useAutoReconnect = networksQuery.value(11).toInt() == 1 ? true : false;
+    net.autoReconnectInterval = networksQuery.value(12).toUInt();
+    net.autoReconnectRetries = networksQuery.value(13).toInt();
+    net.unlimitedReconnectRetries = networksQuery.value(14).toInt() == 1 ? true : false;
+    net.rejoinChannels = networksQuery.value(15).toInt() == 1 ? true : false;
+
+    serversQuery.bindValue(":networkid", net.networkId.toInt());
+    serversQuery.exec();
+    if(!watchQuery(&serversQuery))
+      return nets;
+
+    QVariantList servers;
+    while(serversQuery.next()) {
+      QVariantMap server;
+      server["Host"] = serversQuery.value(0).toString();
+      server["Port"] = serversQuery.value(1).toInt();
+      server["Password"] = serversQuery.value(2).toString();
+      server["UseSSL"] = serversQuery.value(3).toInt() == 1 ? true : false;
+      servers << server;
     }
+    net.serverList = servers;
+    nets << net;
   }
+  return nets;
+}
+
+bool SqliteStorage::isValidNetwork(UserId user, const NetworkId &networkId) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_networkExists"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkid", networkId.toInt());
+  query.exec();
+
+  watchQuery(&query); // there should not occur any errors
+  if(!query.first())
+    return false;
+  
+  Q_ASSERT(!query.next());
+  return true;
+}
+
+bool SqliteStorage::isValidBuffer(const UserId &user, const BufferId &bufferId) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_bufferExists"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":bufferid", bufferId.toInt());
+  query.exec();
+
+  watchQuery(&query);
+  if(!query.first())
+    return false;
+
+  Q_ASSERT(!query.next());
+  return true;
 }
 
-uint SqliteStorage::getNetworkId(UserId user, const QString &network) {
-  QSqlQuery query(logDb);
+NetworkId SqliteStorage::getNetworkId(UserId user, const QString &network) {
+  QSqlQuery query(logDb());
   query.prepare("SELECT networkid FROM network "
 		"WHERE userid = :userid AND networkname = :networkname");
-  query.bindValue(":userid", user);
+  query.bindValue(":userid", user.toInt());
   query.bindValue(":networkname", network);
   query.exec();
   
   if(query.first())
-    return query.value(0).toUInt();
-  else {
-    createBuffer(user, network, "");
-    query.exec();
-    if(query.first())
-      return query.value(0).toUInt();
-    else {
-      qWarning() << "NETWORK NOT FOUND:" << network << "for User:" << user;
-      return 0;
-    }
+    return query.value(0).toInt();
+  else
+    return NetworkId();
+}
+
+QList<NetworkId> SqliteStorage::connectedNetworks(UserId user) {
+  QList<NetworkId> connectedNets;
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_connected_networks"));
+  query.bindValue(":userid", user.toInt());
+  query.exec();
+  watchQuery(&query);
+
+  while(query.next()) {
+    connectedNets << query.value(0).toInt();
   }
+  
+  return connectedNets;
 }
 
-BufferInfo SqliteStorage::getBufferInfo(UserId user, const QString &network, const QString &buffer) {
-  BufferInfo bufferid;
-  // TODO: get rid of this hackaround
-  uint networkId = getNetworkId(user, network);
-  getBufferInfoQuery->bindValue(":networkname", network);
-  getBufferInfoQuery->bindValue(":userid", user);
-  getBufferInfoQuery->bindValue(":userid2", user); // Qt can't handle same placeholder twice... though I guess it's sqlites fault
-  getBufferInfoQuery->bindValue(":buffername", buffer);
-  getBufferInfoQuery->exec();
-
-  if(!getBufferInfoQuery->first()) {
-    createBuffer(user, network, buffer);
-    getBufferInfoQuery->exec();
-    if(getBufferInfoQuery->first()) {
-      bufferid = BufferInfo(getBufferInfoQuery->value(0).toUInt(), networkId, 0, network, buffer);
-      emit bufferInfoUpdated(bufferid);
+void SqliteStorage::setNetworkConnected(UserId user, const NetworkId &networkId, bool isConnected) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("update_network_connected"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkid", networkId.toInt());
+  query.bindValue(":connected", isConnected ? 1 : 0);
+  query.exec();
+  watchQuery(&query);
+}
+
+QHash<QString, QString> SqliteStorage::persistentChannels(UserId user, const NetworkId &networkId) {
+  QHash<QString, QString> persistentChans;
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_persistent_channels"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkid", networkId.toInt());
+  query.exec();
+  watchQuery(&query);
+
+  while(query.next()) {
+    persistentChans[query.value(0).toString()] = query.value(1).toString();
+  }
+  
+  return persistentChans;
+}
+
+void SqliteStorage::setChannelPersistent(UserId user, const NetworkId &networkId, const QString &channel, bool isJoined) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("update_buffer_persistent_channel"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkId", networkId.toInt());
+  query.bindValue(":buffercname", channel.toLower());
+  query.bindValue(":joined", isJoined ? 1 : 0);
+  query.exec();
+  watchQuery(&query);
+}
+
+void SqliteStorage::setPersistentChannelKey(UserId user, const NetworkId &networkId, const QString &channel, const QString &key) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("update_buffer_set_channel_key"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":networkId", networkId.toInt());
+  query.bindValue(":buffercname", channel.toLower());
+  query.bindValue(":key", key);
+  query.exec();
+  watchQuery(&query);
+}
+
+
+void SqliteStorage::createBuffer(UserId user, const NetworkId &networkId, BufferInfo::Type type, const QString &buffer) {
+  QSqlQuery *query = cachedQuery("insert_buffer");
+  query->bindValue(":userid", user.toInt());
+  query->bindValue(":networkid", networkId.toInt());
+  query->bindValue(":buffertype", (int)type);
+  query->bindValue(":buffername", buffer);
+  query->bindValue(":buffercname", buffer.toLower());
+  query->exec();
+
+  watchQuery(query);
+}
+
+BufferInfo SqliteStorage::getBufferInfo(UserId user, const NetworkId &networkId, BufferInfo::Type type, const QString &buffer) {
+  QSqlQuery *query = cachedQuery("select_bufferByName");
+  query->bindValue(":networkid", networkId.toInt());
+  query->bindValue(":userid", user.toInt());
+  query->bindValue(":buffercname", buffer.toLower());
+  query->exec();
+
+  if(!query->first()) {
+    createBuffer(user, networkId, type, buffer);
+    query->exec();
+    if(!query->first()) {
+      watchQuery(query);
+      qWarning() << "unable to create BufferInfo for:" << user << networkId << buffer;
+      return BufferInfo();
     }
-  } else {
-    bufferid = BufferInfo(getBufferInfoQuery->value(0).toUInt(), networkId, 0, network, buffer);
   }
 
-  Q_ASSERT(!getBufferInfoQuery->next());
+  BufferInfo bufferInfo = BufferInfo(query->value(0).toInt(), networkId, (BufferInfo::Type)query->value(1).toInt(), 0, buffer);
+  if(query->next()) {
+    qWarning() << "SqliteStorage::getBufferInfo(): received more then one Buffer!";
+    qWarning() << "         Query:" << query->lastQuery();
+    qWarning() << "  bound Values:" << query->boundValues();
+    Q_ASSERT(false);
+  }
+
+  return bufferInfo;
+}
+
+BufferInfo SqliteStorage::getBufferInfo(UserId user, const BufferId &bufferId) {
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_buffer_by_id"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":bufferid", bufferId.toInt());
+  query.exec();
+  if(!watchQuery(&query))
+    return BufferInfo();
 
-  return bufferid;
+  if(!query.first())
+    return BufferInfo();
+
+  BufferInfo bufferInfo(query.value(0).toInt(), query.value(1).toInt(), (BufferInfo::Type)query.value(2).toInt(), 0, query.value(4).toString());
+  Q_ASSERT(!query.next());
+
+  return bufferInfo;
 }
 
 QList<BufferInfo> SqliteStorage::requestBuffers(UserId user, QDateTime since) {
+  uint time = 0;
+  if(since.isValid())
+    time = since.toTime_t();
+  
   QList<BufferInfo> bufferlist;
-  QSqlQuery query(logDb);
-  query.prepare("SELECT DISTINCT buffer.bufferid, networkname, buffername FROM buffer "
-                "JOIN network ON buffer.networkid = network.networkid "
-                "JOIN backlog ON buffer.bufferid = backlog.bufferid "
-                "WHERE buffer.userid = :userid AND time >= :time");
-  query.bindValue(":userid", user);
-  if (since.isValid()) {
-    query.bindValue(":time", since.toTime_t());
-  } else {
-    query.bindValue(":time", 0);
-  }
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_buffers"));
+  query.bindValue(":userid", user.toInt());
+  query.bindValue(":time", time);
   
   query.exec();
-
+  watchQuery(&query);
   while(query.next()) {
-    bufferlist << BufferInfo(query.value(0).toUInt(), getNetworkId(user, query.value(1).toString()), 0, query.value(1).toString(), query.value(2).toString());
+    bufferlist << BufferInfo(query.value(0).toInt(), query.value(1).toInt(), (BufferInfo::Type)query.value(2).toInt(), query.value(3).toInt(), query.value(4).toString());
   }
   return bufferlist;
 }
 
+bool SqliteStorage::removeBuffer(const UserId &user, const BufferId &bufferId) {
+  if(!isValidBuffer(user, bufferId))
+    return false;
+
+  QSqlQuery delBacklogQuery(logDb());
+  delBacklogQuery.prepare(queryString("delete_backlog_for_buffer"));
+  delBacklogQuery.bindValue(":bufferid", bufferId.toInt());
+  delBacklogQuery.exec();
+  if(!watchQuery(&delBacklogQuery))
+    return false;
+
+  QSqlQuery delBufferQuery(logDb());
+  delBufferQuery.prepare(queryString("delete_buffer_for_bufferid"));
+  delBufferQuery.bindValue(":bufferid", bufferId.toInt());
+  delBufferQuery.exec();
+  if(!watchQuery(&delBufferQuery))
+    return false;
+
+  return true;
+}
+
+BufferId SqliteStorage::renameBuffer(const UserId &user, const NetworkId &networkId, const QString &newName, const QString &oldName) {
+  // check if such a buffer exists...
+  QSqlQuery existsQuery(logDb());
+  existsQuery.prepare(queryString("select_bufferByName"));
+  existsQuery.bindValue(":networkid", networkId.toInt());
+  existsQuery.bindValue(":userid", user.toInt());
+  existsQuery.bindValue(":buffercname", oldName.toLower());
+  existsQuery.exec();
+  if(!watchQuery(&existsQuery))
+    return false;
+
+  if(!existsQuery.first())
+    return false;
+
+  const int bufferid = existsQuery.value(0).toInt();
+
+  Q_ASSERT(!existsQuery.next());
+
+  // ... and if the new name is still free.
+  existsQuery.bindValue(":networkid", networkId.toInt());
+  existsQuery.bindValue(":userid", user.toInt());
+  existsQuery.bindValue(":buffercname", newName.toLower());
+  existsQuery.exec();
+  if(!watchQuery(&existsQuery))
+    return false;
+
+  if(existsQuery.first())
+    return false;
+
+  QSqlQuery renameBufferQuery(logDb());
+  renameBufferQuery.prepare(queryString("update_buffer_name"));
+  renameBufferQuery.bindValue(":buffername", newName);
+  renameBufferQuery.bindValue(":buffercname", newName.toLower());
+  renameBufferQuery.bindValue(":bufferid", bufferid);
+  renameBufferQuery.exec();
+  if(watchQuery(&existsQuery))
+    return BufferId(bufferid);
+  else
+    return BufferId();
+}
+
+void SqliteStorage::setBufferLastSeen(UserId user, const BufferId &bufferId, const QDateTime &seenDate) {
+  QSqlQuery *query = cachedQuery("update_buffer_lastseen");
+  query->bindValue(":userid", user.toInt());
+  query->bindValue(":bufferid", bufferId.toInt());
+  query->bindValue(":lastseen", seenDate.toTime_t());
+  query->exec();
+  watchQuery(query);
+}
+
+QHash<BufferId, QDateTime> SqliteStorage::bufferLastSeenDates(UserId user) {
+  QHash<BufferId, QDateTime> lastSeenHash;
+  QSqlQuery query(logDb());
+  query.prepare(queryString("select_buffer_lastseen_dates"));
+  query.bindValue(":userid", user.toInt());
+  query.exec();
+  if(!watchQuery(&query))
+    return lastSeenHash;
+
+  while(query.next()) {
+    lastSeenHash[query.value(0).toInt()] = QDateTime::fromTime_t(query.value(1).toUInt());
+  }
+  return lastSeenHash;
+}
+
 MsgId SqliteStorage::logMessage(Message msg) {
+  QSqlQuery *logMessageQuery = cachedQuery("insert_message");
   logMessageQuery->bindValue(":time", msg.timestamp().toTime_t());
-  logMessageQuery->bindValue(":bufferid", msg.buffer().uid());
+  logMessageQuery->bindValue(":bufferid", msg.bufferInfo().bufferId().toInt());
   logMessageQuery->bindValue(":type", msg.type());
   logMessageQuery->bindValue(":flags", msg.flags());
   logMessageQuery->bindValue(":sender", msg.sender());
@@ -413,7 +594,8 @@ MsgId SqliteStorage::logMessage(Message msg) {
   
   if(logMessageQuery->lastError().isValid()) {
     // constraint violation - must be NOT NULL constraint - probably the sender is missing...
-    if(logMessageQuery->lastError().number() == 19) { 
+    if(logMessageQuery->lastError().number() == 19) {
+      QSqlQuery *addSenderQuery = cachedQuery("insert_sender");
       addSenderQuery->bindValue(":sender", msg.sender());
       addSenderQuery->exec();
       watchQuery(addSenderQuery);
@@ -425,44 +607,38 @@ MsgId SqliteStorage::logMessage(Message msg) {
     }
   }
 
-  getLastMessageIdQuery->bindValue(":time", msg.timestamp().toTime_t());
-  getLastMessageIdQuery->bindValue(":bufferid", msg.buffer().uid());
-  getLastMessageIdQuery->bindValue(":type", msg.type());
-  getLastMessageIdQuery->bindValue(":sender", msg.sender());
-  getLastMessageIdQuery->exec();
-
-  if(getLastMessageIdQuery->first()) {
-    return getLastMessageIdQuery->value(0).toUInt();
-  } else { // somethin went wrong... :(
-    qDebug() << getLastMessageIdQuery->lastQuery() << "time/bufferid/type/sender:" << msg.timestamp().toTime_t() << msg.buffer().uid() << msg.type() << msg.sender();
-    Q_ASSERT(false);
-    return 0;
-  }
+  MsgId msgId = logMessageQuery->lastInsertId().toInt();
+  Q_ASSERT(msgId.isValid());
+  return msgId;
 }
 
 QList<Message> SqliteStorage::requestMsgs(BufferInfo buffer, int lastmsgs, int offset) {
   QList<Message> messagelist;
   // we have to determine the real offset first
-  requestMsgsOffsetQuery->bindValue(":bufferid", buffer.uid());
-  requestMsgsOffsetQuery->bindValue(":messageid", offset);
-  requestMsgsOffsetQuery->exec();
-  requestMsgsOffsetQuery->first();
-  offset = requestMsgsOffsetQuery->value(0).toUInt();
+  QSqlQuery *offsetQuery = cachedQuery("select_messagesOffset");
+  offsetQuery->bindValue(":bufferid", buffer.bufferId().toInt());
+  offsetQuery->bindValue(":messageid", offset);
+  offsetQuery->exec();
+  offsetQuery->first();
+  offset = offsetQuery->value(0).toInt();
 
   // now let's select the messages
-  requestMsgsQuery->bindValue(":bufferid", buffer.uid());
-  requestMsgsQuery->bindValue(":bufferid2", buffer.uid());  // Qt can't handle the same placeholder used twice
-  requestMsgsQuery->bindValue(":limit", lastmsgs);
-  requestMsgsQuery->bindValue(":offset", offset);
-  requestMsgsQuery->exec();
-  while(requestMsgsQuery->next()) {
-    Message msg(QDateTime::fromTime_t(requestMsgsQuery->value(1).toInt()),
+  QSqlQuery *msgQuery = cachedQuery("select_messages");
+  msgQuery->bindValue(":bufferid", buffer.bufferId().toInt());
+  msgQuery->bindValue(":limit", lastmsgs);
+  msgQuery->bindValue(":offset", offset);
+  msgQuery->exec();
+  
+  watchQuery(msgQuery);
+  
+  while(msgQuery->next()) {
+    Message msg(QDateTime::fromTime_t(msgQuery->value(1).toInt()),
                 buffer,
-                (Message::Type)requestMsgsQuery->value(2).toUInt(),
-                requestMsgsQuery->value(5).toString(),
-                requestMsgsQuery->value(4).toString(),
-                requestMsgsQuery->value(3).toUInt());
-    msg.setMsgId(requestMsgsQuery->value(0).toUInt());
+                (Message::Type)msgQuery->value(2).toUInt(),
+                msgQuery->value(5).toString(),
+                msgQuery->value(4).toString(),
+                msgQuery->value(3).toUInt());
+    msg.setMsgId(msgQuery->value(0).toInt());
     messagelist << msg;
   }
   return messagelist;
@@ -472,27 +648,30 @@ QList<Message> SqliteStorage::requestMsgs(BufferInfo buffer, int lastmsgs, int o
 QList<Message> SqliteStorage::requestMsgs(BufferInfo buffer, QDateTime since, int offset) {
   QList<Message> messagelist;
   // we have to determine the real offset first
-  requestMsgsSinceOffsetQuery->bindValue(":bufferid", buffer.uid());
-  requestMsgsSinceOffsetQuery->bindValue(":since", since.toTime_t());
-  requestMsgsSinceOffsetQuery->exec();
-  requestMsgsSinceOffsetQuery->first();
-  offset = requestMsgsSinceOffsetQuery->value(0).toUInt();  
+  QSqlQuery *offsetQuery = cachedQuery("select_messagesSinceOffset");
+  offsetQuery->bindValue(":bufferid", buffer.bufferId().toInt());
+  offsetQuery->bindValue(":since", since.toTime_t());
+  offsetQuery->exec();
+  offsetQuery->first();
+  offset = offsetQuery->value(0).toInt();
 
   // now let's select the messages
-  requestMsgsSinceQuery->bindValue(":bufferid", buffer.uid());
-  requestMsgsSinceQuery->bindValue(":bufferid2", buffer.uid());
-  requestMsgsSinceQuery->bindValue(":since", since.toTime_t());
-  requestMsgsSinceQuery->bindValue(":offset", offset);
-  requestMsgsSinceQuery->exec();
-
-  while(requestMsgsSinceQuery->next()) {
-    Message msg(QDateTime::fromTime_t(requestMsgsSinceQuery->value(1).toInt()),
+  QSqlQuery *msgQuery = cachedQuery("select_messagesSince");
+  msgQuery->bindValue(":bufferid", buffer.bufferId().toInt());
+  msgQuery->bindValue(":since", since.toTime_t());
+  msgQuery->bindValue(":offset", offset);
+  msgQuery->exec();
+
+  watchQuery(msgQuery);
+  
+  while(msgQuery->next()) {
+    Message msg(QDateTime::fromTime_t(msgQuery->value(1).toInt()),
                 buffer,
-                (Message::Type)requestMsgsSinceQuery->value(2).toUInt(),
-                requestMsgsSinceQuery->value(5).toString(),
-                requestMsgsSinceQuery->value(4).toString(),
-                requestMsgsSinceQuery->value(3).toUInt());
-    msg.setMsgId(requestMsgsSinceQuery->value(0).toUInt());
+                (Message::Type)msgQuery->value(2).toUInt(),
+                msgQuery->value(5).toString(),
+                msgQuery->value(4).toString(),
+                msgQuery->value(3).toUInt());
+    msg.setMsgId(msgQuery->value(0).toInt());
     messagelist << msg;
   }
 
@@ -502,56 +681,87 @@ QList<Message> SqliteStorage::requestMsgs(BufferInfo buffer, QDateTime since, in
 
 QList<Message> SqliteStorage::requestMsgRange(BufferInfo buffer, int first, int last) {
   QList<Message> messagelist;
-  requestMsgRangeQuery->bindValue(":bufferid", buffer.uid());
-  requestMsgRangeQuery->bindValue(":bufferid2", buffer.uid());
-  requestMsgRangeQuery->bindValue(":firstmsg", first);
-  requestMsgRangeQuery->bindValue(":lastmsg", last);
+  QSqlQuery *rangeQuery = cachedQuery("select_messageRange");
+  rangeQuery->bindValue(":bufferid", buffer.bufferId().toInt());
+  rangeQuery->bindValue(":firstmsg", first);
+  rangeQuery->bindValue(":lastmsg", last);
+  rangeQuery->exec();
 
-  while(requestMsgRangeQuery->next()) {
-    Message msg(QDateTime::fromTime_t(requestMsgRangeQuery->value(1).toInt()),
+  watchQuery(rangeQuery);
+  
+  while(rangeQuery->next()) {
+    Message msg(QDateTime::fromTime_t(rangeQuery->value(1).toInt()),
                 buffer,
-                (Message::Type)requestMsgRangeQuery->value(2).toUInt(),
-                requestMsgRangeQuery->value(5).toString(),
-                requestMsgRangeQuery->value(4).toString(),
-                requestMsgRangeQuery->value(3).toUInt());
-    msg.setMsgId(requestMsgRangeQuery->value(0).toUInt());
+                (Message::Type)rangeQuery->value(2).toUInt(),
+                rangeQuery->value(5).toString(),
+                rangeQuery->value(4).toString(),
+                rangeQuery->value(3).toUInt());
+    msg.setMsgId(rangeQuery->value(0).toInt());
     messagelist << msg;
   }
 
   return messagelist;
 }
 
-QString SqliteStorage::backlogFile(bool createPath) {
+QString SqliteStorage::backlogFile() {
   // kinda ugly, but I currently see no other way to do that
 #ifdef Q_OS_WIN32
   QString quasselDir = QDir::homePath() + qgetenv("APPDATA") + "\\quassel\\";
 #else
   QString quasselDir = QDir::homePath() + "/.quassel/";
 #endif
-  
-  if (createPath) {
-    QDir *qDir = new QDir(quasselDir);
-    if (!qDir->exists(quasselDir)) {
-      qDir->mkpath(quasselDir);
-    }
-    delete qDir;
-  }
 
-  return quasselDir + "quassel-storage.sqlite";
+  QDir qDir(quasselDir);
+  if(!qDir.exists(quasselDir))
+    qDir.mkpath(quasselDir);
+  
+  return quasselDir + "quassel-storage.sqlite";  
 }
 
-bool SqliteStorage::watchQuery(QSqlQuery *query) {
-  if(query->lastError().isValid()) {
-    qWarning() << "unhandled Error in QSqlQuery!";
-    qWarning() << "                  last Query:" << query->lastQuery();
-    qWarning() << "              executed Query:" << query->executedQuery();
-    qWarning() << "                bound Values:" << query->boundValues();
-    qWarning() << "                Error Number:" << query->lastError().number();
-    qWarning() << "               Error Message:" << query->lastError().text();
-    qWarning() << "              Driver Message:" << query->lastError().driverText();
-    qWarning() << "                  DB Message:" << query->lastError().databaseText();
-    
+
+// ONLY NEEDED FOR MIGRATION
+bool SqliteStorage::init(const QVariantMap &settings) {
+  if(!AbstractSqlStorage::init(settings))
+    return false;
+
+  QSqlQuery checkMigratedQuery(logDb());
+  checkMigratedQuery.prepare("SELECT DISTINCT typeOf(password) FROM quasseluser");
+  checkMigratedQuery.exec();
+  if(!watchQuery(&checkMigratedQuery))
+    return false;
+
+  if(!checkMigratedQuery.first())
+    return true;		// table is empty -> no work to be done
+
+  QString passType = checkMigratedQuery.value(0).toString().toLower();
+  if(passType == "text")
+    return true; // allready migrated
+
+  Q_ASSERT(passType == "blob");
+  
+  QSqlQuery getPasswordsQuery(logDb());
+  getPasswordsQuery.prepare("SELECT userid, password FROM quasseluser");
+  getPasswordsQuery.exec();
+
+  if(!watchQuery(&getPasswordsQuery)) {
+    qWarning() << "unable to migrate to new password format!";
     return false;
   }
+
+  QHash<int, QByteArray> passHash;
+  while(getPasswordsQuery.next()) {
+    passHash[getPasswordsQuery.value(0).toInt()] = getPasswordsQuery.value(1).toByteArray();
+  }
+
+  QSqlQuery setPasswordsQuery(logDb());
+  setPasswordsQuery.prepare("UPDATE quasseluser SET password = :password WHERE userid = :userid");
+  foreach(int userId, passHash.keys()) {
+    setPasswordsQuery.bindValue(":password", QString(passHash[userId]));
+    setPasswordsQuery.bindValue(":userid", userId);
+    setPasswordsQuery.exec();
+    watchQuery(&setPasswordsQuery);
+  }
+
+  qDebug() << "successfully migrated passwords!";
   return true;
 }