Reject clients that attempt to login before the core is configured

[quassel.git] / src / core / coreauthhandler.cpp

diff --git a/src/core/coreauthhandler.cpp b/src/core/coreauthhandler.cpp
index e380924..26cdfcf 100644 (file)
--- a/src/core/coreauthhandler.cpp
+++ b/src/core/coreauthhandler.cpp
@@ -1,5 +1,5 @@
 /***************************************************************************
- *   Copyright (C) 2005-2015 by the Quassel Project                        *
+ *   Copyright (C) 2005-2018 by the Quassel Project                        *
  *   devel@quassel-irc.org                                                 *
  *                                                                         *
  *   This program is free software; you can redistribute it and/or modify  *
@@ -81,7 +81,7 @@ void CoreAuthHandler::onReadyRead()
     }
 
     // read the list of protocols supported by the client
-    while (socket()->bytesAvailable() >= 4) {
+    while (socket()->bytesAvailable() >= 4 && _supportedProtos.size() < 16) { // sanity check
         quint32 data;
         socket()->read((char*)&data, 4);
         data = qFromBigEndian<quint32>(data);
@@ -98,6 +98,12 @@ void CoreAuthHandler::onReadyRead()
                 level = Compressor::NoCompression;
 
             RemotePeer *peer = PeerFactory::createPeer(_supportedProtos, this, socket(), level, this);
+            if (!peer) {
+                qWarning() << "Received invalid handshake data from client" << socket()->peerAddress().toString();
+                close();
+                return;
+            }
+
             if (peer->protocol() == Protocol::LegacyProtocol) {
                 _legacy = true;
                 connect(peer, SIGNAL(protocolVersionMismatch(int,int)), SLOT(onProtocolVersionMismatch(int,int)));
@@ -170,18 +176,8 @@ void CoreAuthHandler::handle(const RegisterClient &msg)
     if (!configured)
         backends = Core::backendInfo();
 
-    int uptime = Core::instance()->startTime().secsTo(QDateTime::currentDateTime().toUTC());
-    int updays = uptime / 86400; uptime %= 86400;
-    int uphours = uptime / 3600; uptime %= 3600;
-    int upmins = uptime / 60;
-    QString coreInfo = tr("<b>Quassel Core Version %1</b><br>"
-                          "Built: %2<br>"
-                          "Up %3d%4h%5m (since %6)").arg(Quassel::buildInfo().fancyVersionString)
-                          .arg(Quassel::buildInfo().buildDate)
-                          .arg(updays).arg(uphours, 2, 10, QChar('0')).arg(upmins, 2, 10, QChar('0')).arg(Core::instance()->startTime().toString(Qt::TextDate));
-
-    // useSsl and coreInfo are only used for the legacy protocol
-    _peer->dispatch(ClientRegistered(Quassel::features(), configured, backends, useSsl, coreInfo));
+    // useSsl is only used for the legacy protocol
+    _peer->dispatch(ClientRegistered(Quassel::features(), configured, backends, useSsl));
 
     if (_legacy && useSsl)
         startSsl();
@@ -208,6 +204,12 @@ void CoreAuthHandler::handle(const Login &msg)
     if (!checkClientRegistered())
         return;
 
+    if (!Core::isConfigured()) {
+        qWarning() << qPrintable(tr("Client")) << qPrintable(socket()->peerAddress().toString()) << qPrintable(tr("attempted to login before the core was configured, rejecting."));
+        _peer->dispatch(ClientDenied(tr("<b>Attempted to login before core was configured!</b><br>The core must be configured before attempting to login.")));
+        return;
+    }
+
     UserId uid = Core::validateUser(msg.user, msg.password);
     if (uid == 0) {
         quInfo() << qPrintable(tr("Invalid login attempt from %1 as \"%2\"").arg(socket()->peerAddress().toString(), msg.user));