Module sandboxing system

Sandboxing makes module scripts run inside an isolated lua environments,
making more easier and secure to script

Move and rework TextMessage using the new sandbox system

modules/corelib/corelib.otmod

@@ -16,6 +16,5 @@ Module
     dofile 'settings'
     dofile 'keyboard'
     dofile 'mouse'
-    dofile 'protocol'
 
     dofiles 'ui'

modules/corelib/settings.lua

@@ -51,11 +51,13 @@ function g_settings.getString(key, default)
 end
 
 function g_settings.getInteger(key, default)
-  return tonumber(g_settings.get(key, default))
+  local v = tonumber(g_settings.get(key, default)) or 1
+  return v
 end
 
 function g_settings.getNumber(key, default)
-  return tonumber(g_settings.get(key, default))
+  local v = tonumber(g_settings.get(key, default)) or 1
+  return v
 end
 
 function g_settings.getBoolean(key, default)

modules/corelib/util.lua

@@ -110,9 +110,34 @@ function extends(base)
   return derived
 end
 
+function export(what, key)
+  if key ~= nil then
+    _G[key] = what
+  else
+    for k,v in pairs(what) do
+      _G[k] = v
+    end
+  end
+end
+
+function unexport(key)
+  if type(key) == 'table' then
+    for _k,v in pairs(key) do
+      _G[v] = nil
+    end
+  else
+    _G[key] = nil
+  end
+end
+
+function sandbox(what)
+  what = what or 2
+  setfenv(what, newenv())
+end
+
 function newenv()
   local env = { }
-  setmetatable(env, { __index = _G} )
+  setmetatable(env, { __index = getfenv() } )
   return env
 end
 
@@ -157,13 +182,6 @@ function toboolean(str)
   return false
 end
 
-local oldtonumber = tonumber
-
-function tonumber(v)
-  if v == nil then return 0 end
-  return oldtonumber(v)
-end
-
 function signalcall(param, ...)
   if type(param) == 'function' then
     return param(...)

modules/game_playerdeath/playerdeath.lua

@@ -8,7 +8,7 @@ local deathWindow
 -- public functions
 function PlayerDeath.init()
   g_ui.importStyle('deathwindow.otui')
-  
+
   connect(g_game, { onDeath = PlayerDeath.display,
                     onGameEnd = PlayerDeath.reset })
 end
@@ -22,7 +22,6 @@ function PlayerDeath.terminate()
 end
 
 function PlayerDeath.reset()
-  GameInterface.getMapPanel():recursiveGetChildById('centerAdvance'):hide()
   if deathWindow then
     deathWindow:destroy()
     deathWindow = nil
@@ -37,9 +36,9 @@ end
 function PlayerDeath.displayDeadMessage()
   local advanceLabel = GameInterface.getMapPanel():recursiveGetChildById('centerAdvance')
   if advanceLabel:isVisible() then
-    return 
+    return
   end
-  
+
   TextMessage.displayEventAdvance(tr('You are dead.'))
 end
 
@@ -64,7 +63,7 @@ function PlayerDeath.openWindow()
 
   deathWindow.onEnter = okFunc
   deathWindow.onEscape = cancelFunc
-  
+
   okButton.onClick = okFunc
   cancelButton.onClick = cancelFunc
 end

modules/game_textmessage/protocol.lua

@@ -0,0 +1,60 @@
+function getMessageTypes(version)
+  if version >= 960 then
+    perror("TODO: message types for 9.6")
+    return {}
+  elseif version >= 861 then
+    return {
+      [13] = 'ConsoleOrange',
+      [14] = 'ConsoleOrange',
+      [15] = 'Warning',
+      [16] = 'EventAdvance',
+      [17] = 'EventDefault',
+      [18] = 'StatusDefault',
+      [19] = 'Info',
+      [20] = 'StatusSmall',
+      [21] = 'ConsoleBlue',
+      [22] = 'ConsoleRed'
+    }
+  elseif version >= 854 then
+    return {
+      [18] = 'ConsoleRed',
+      [19] = 'ConsoleOrange',
+      [20] = 'ConsoleOrange',
+      [21] = 'Warning',
+      [22] = 'EventAdvance',
+      [23] = 'EventDefault',
+      [24] = 'StatusDefault',
+      [25] = 'Info',
+      [26] = 'StatusSmall',
+      [27] = 'ConsoleBlue'
+    }
+  else
+    return {
+      [18] = 'Warning',
+      [19] = 'EventAdvance',
+      [20] = 'EventDefault',
+      [21] = 'StatusDefault',
+      [22] = 'Info',
+      [23] = 'StatusSmall',
+      [24] = 'ConsoleBlue',
+      [25] = 'ConsoleRed',
+      [26] = 'ConsoleOrange',
+      [27] = 'ConsoleOrange',
+    }
+   end
+end
+
+function parseTextMessage(msg)
+  local msgtype = msg:getU8()
+  local text = msg:getString()
+  msgtype = getMessageTypes(g_game.getProtocolVersion())[msgtype]
+  signalcall(g_game.onTextMessage, msgtype, text)
+end
+
+function registerProtocol()
+  ProtocolGame.registerOpcode(GameServerOpcodes.GameServerTextMessage, parseTextMessage)
+end
+
+function unregisterProtocol()
+  ProtocolGame.unregisterOpcode(GameServerOpcodes.GameServerTextMessage)
+end

modules/game_textmessage/textmessage.lua

@@ -1,65 +1,31 @@
-TextMessage = {}
-
--- require styles
-g_ui.importStyle('textmessage.otui')
-
--- private variables
-local MessageTypes = {
-  consoleRed      = { color = '#F55E5E', consoleTab = tr('Default') },
-  consoleOrange   = { color = '#FE6500', consoleTab = tr('Default') },
-  consoleBlue     = { color = '#9F9DFD', consoleTab = tr('Default') },
-  warning         = { color = '#F55E5E', consoleTab = tr('Server Log'), labelId = 'centerWarning' },
-  infoDescription = { color = '#00EB00', consoleTab = tr('Server Log'), labelId = 'centerInfo', consoleOption = 'showInfoMessagesInConsole' },
-  eventAdvance    = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'centerAdvance', consoleOption = 'showEventMessagesInConsole' },
-  eventDefault    = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'bottomStatus', consoleOption = 'showEventMessagesInConsole' },
-  statusDefault   = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'bottomStatus', consoleOption = 'showStatusMessagesInConsole' },
-  statusSmall     = { color = '#FFFFFF', labelId = 'bottomStatus' },
-  private         = { color = '#5FF7F7', labelId = 'centerPrivate' }
+MessageTypesConf = {
+  ConsoleRed      = { color = '#F55E5E', consoleTab = tr('Default') },
+  ConsoleOrange   = { color = '#FE6500', consoleTab = tr('Default') },
+  ConsoleBlue     = { color = '#9F9DFD', consoleTab = tr('Default') },
+  Warning         = { color = '#F55E5E', consoleTab = tr('Server Log'), labelId = 'warningLabel' },
+  Info            = { color = '#00EB00', consoleTab = tr('Server Log'), labelId = 'infoLabel', consoleOption = 'showInfoMessagesInConsole' },
+  EventAdvance    = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'advanceLabel', consoleOption = 'showEventMessagesInConsole' },
+  EventDefault    = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'statusLabel', consoleOption = 'showEventMessagesInConsole' },
+  StatusDefault   = { color = '#FFFFFF', consoleTab = tr('Server Log'), labelId = 'statusLabel', consoleOption = 'showStatusMessagesInConsole' },
+  StatusSmall     = { color = '#FFFFFF', labelId = 'statusLabel' },
+  Private         = { color = '#5FF7F7', labelId = 'privateLabel' }
 }
 
-local centerTextMessagePanel
-local bottomStatusLabel
-local privateLabel
-
--- private functions
-local function displayMessage(msgtype, msg, time)
-  if not g_game.isOnline() then return end
-
-  if msgtype.consoleTab ~= nil then
-    if msgtype.consoleOption == nil or Options.getOption(msgtype.consoleOption) then
-      Console.addText(msg, msgtype, msgtype.consoleTab)
-    end
-  end
-
-  if msgtype.labelId then
-    local label = GameInterface.getMapPanel():recursiveGetChildById(msgtype.labelId)
-
-    label:setText(msg)
-    label:setColor(msgtype.color)
-
-    if not time then
-      time = math.max(#msg * 100, 4000)
-    else
-      time = time * 1000
-    end
-    removeEvent(label.hideEvent)
-    addEvent(function() label:setVisible(true) end)
-    label.hideEvent = scheduleEvent(function() label:setVisible(false) end, time)
-  end
-end
-
-local function createTextMessageLabel(id, parent, class)
-  local label = g_ui.createWidget(class, parent)
-  label:setFont('verdana-11px-rounded')
-  label:setId(id)
-  return label
-end
-
--- public functions
-function TextMessage.init()
-  connect(g_game, { onTextMessage = TextMessage.display,
-                    onGameStart = TextMessage.clearMessages })
-
+centerTextMessagePanel = nil
+statusLabel = nil
+privateLabel = nil
+warningLabel = nil
+advanceLabel = nil
+infoLabel = nil
+
+function init()
+  connect(g_game, {
+    onTextMessage = displayMessage,
+    onGameStart = clearMessages
+  })
+  registerProtocol()
+
+  g_ui.importStyle('textmessage.otui')
   centerTextMessagePanel = g_ui.createWidget('Panel', GameInterface.getMapPanel())
   centerTextMessagePanel:setId('centerTextMessagePanel')
 
@@ -69,55 +35,78 @@ function TextMessage.init()
   centerTextMessagePanel:setWidth(360)
   centerTextMessagePanel:centerIn('parent')
 
-  createTextMessageLabel('centerWarning', centerTextMessagePanel, 'CenterLabel')
-  createTextMessageLabel('centerAdvance', centerTextMessagePanel, 'CenterLabel')
-  createTextMessageLabel('centerInfo', centerTextMessagePanel, 'CenterLabel')
-
-  privateLabel = createTextMessageLabel('centerPrivate', GameInterface.getMapPanel(), 'TopCenterLabel')
-  bottomStatusLabel = createTextMessageLabel('bottomStatus', GameInterface.getMapPanel(), 'BottomLabel')
+  warningLabel = createTextMessageLabel('warningLabel', centerTextMessagePanel, 'CenterLabel')
+  advanceLabel = createTextMessageLabel('advanceLabel', centerTextMessagePanel, 'CenterLabel')
+  infoLabel = createTextMessageLabel('infoLabel', centerTextMessagePanel, 'CenterLabel')
+  privateLabel = createTextMessageLabel('privateLabel', GameInterface.getMapPanel(), 'TopCenterLabel')
+  statusLabel = createTextMessageLabel('statusLabel', GameInterface.getMapPanel(), 'BottomLabel')
+
+  export({
+    clearMessages = clearMessages,
+    displayStatus = function() displayMessage(MessageTypes.StatusSmall, msg) end,
+    displayEventAdvance = function() displayMessage(MessageTypes.EventAdvance, msg, time) end,
+    displayPrivate = function() displayPrivate(msg, time) end
+  }, 'TextMessage')
 end
 
-function TextMessage.terminate()
-  disconnect(g_game, { onDeath = TextMessage.displayDeadMessage,
-                       onTextMessage = TextMessage.display,
-                       onGameStart = TextMessage.clearMessages })
-  removeEvent(GameInterface.getMapPanel():recursiveGetChildById('centerWarning').hideEvent)
-  removeEvent(GameInterface.getMapPanel():recursiveGetChildById('centerAdvance').hideEvent)
-  removeEvent(GameInterface.getMapPanel():recursiveGetChildById('centerInfo').hideEvent)
-  removeEvent(GameInterface.getMapPanel():recursiveGetChildById('centerPrivate').hideEvent)
-  removeEvent(GameInterface.getMapPanel():recursiveGetChildById('bottomStatus').hideEvent)
+function terminate()
+  disconnect(g_game, {
+    onTextMessage = display,
+    onGameStart = clearMessages
+  })
+  unregisterProtocol()
+
+  removeEvent(warningLabel.hideEvent)
+  removeEvent(advanceLabel.hideEvent)
+  removeEvent(infoLabel.hideEvent)
+  removeEvent(privateLabel.hideEvent)
+  removeEvent(statusLabel.hideEvent)
+
   centerTextMessagePanel:destroy()
-  bottomStatusLabel:destroy()
+  statusLabel:destroy()
   privateLabel:destroy()
-  centerTextMessagePanel = nil
-  bottomStatusLabel = nil
-  privateLabel = nil
-  TextMessage = nil
-end
 
-function TextMessage.clearMessages()
-  GameInterface.getMapPanel():recursiveGetChildById('centerWarning'):hide()
-  GameInterface.getMapPanel():recursiveGetChildById('centerAdvance'):hide()
-  GameInterface.getMapPanel():recursiveGetChildById('centerInfo'):hide()
-  GameInterface.getMapPanel():recursiveGetChildById('centerPrivate'):hide()
-  GameInterface.getMapPanel():recursiveGetChildById('bottomStatus'):hide()
+  unexport('TextMessage')
 end
 
-function TextMessage.displayStatus(msg, time)
-  displayMessage(MessageTypes.statusSmall, msg)
+function clearMessages()
+  warningLabel:hide()
+  advanceLabel:hide()
+  infoLabel:hide()
+  privateLabel:hide()
+  statusLabel:hide()
 end
 
-function TextMessage.displayEventAdvance(msg, time)
-  displayMessage(MessageTypes.eventAdvance, msg, time)
+function createTextMessageLabel(id, parent, class)
+  local label = g_ui.createWidget(class, parent)
+  label:setFont('verdana-11px-rounded')
+  label:setId(id)
+  return label
 end
 
-function TextMessage.displayPrivate(msg, time)
-  displayMessage(MessageTypes.private, msg, time)
-end
+function displayMessage(msgtype, msg, time)
+  if not g_game.isOnline() then return end
+  msgtypeconf = MessageTypesConf[msgtype]
 
-function TextMessage.display(msgtypedesc, msg)
-  local msgtype = MessageTypes[msgtypedesc]
-  if msgtype then
-    displayMessage(msgtype, msg)
+  if msgtypeconf.consoleTab ~= nil then
+    if msgtypeconf.consoleOption == nil or Options.getOption(msgtypeconf.consoleOption) then
+      Console.addText(msg, msgtypeconf, msgtypeconf.consoleTab)
+    end
+  end
+
+  if msgtypeconf.labelId then
+    local label = GameInterface.getMapPanel():recursiveGetChildById(msgtypeconf.labelId)
+
+    label:setText(msg)
+    label:setColor(msgtypeconf.color)
+
+    if not time then
+      time = math.max(#msg * 100, 4000)
+    else
+      time = time * 1000
+    end
+    removeEvent(label.hideEvent)
+    addEvent(function() label:setVisible(true) end)
+    label.hideEvent = scheduleEvent(function() label:setVisible(false) end, time)
   end
 end

modules/game_textmessage/textmessage.otmod

@@ -3,13 +3,14 @@ Module
   description: Manage game text messages
   author: edubart
   website: www.otclient.info
+  sandboxed: true
 
   dependencies:
     - game_interface
 
-  @onLoad: |
-    dofile 'textmessage'
-    TextMessage.init()
+  scripts:
+    - protocol.lua
+    - textmessage.lua
 
-  @onUnload: |
-    TextMessage.terminate()
+  @onLoad: init()
+  @onUnload: terminate()

modules/gamelib/gamelib.otmod

@@ -10,7 +10,7 @@ Module
 
   @onLoad: |
     dofile 'const'
-
+    dofile 'protocol'
     dofile 'protocollogin'
     dofile 'protocolgame'
     dofile 'game'

src/framework/core/module.cpp

@@ -22,6 +22,7 @@
 
 #include "module.h"
 #include "modulemanager.h"
+#include "resourcemanager.h"
 
 #include <framework/otml/otml.h>
 #include <framework/luaengine/luainterface.h>
@@ -29,6 +30,8 @@
 Module::Module(const std::string& name)
 {
     m_name = name;
+    g_lua.newEnvironment();
+    m_sandboxEnv = g_lua.ref();
 }
 
 bool Module::load()
@@ -36,24 +39,43 @@ bool Module::load()
     if(m_loaded)
         return true;
 
-    for(const std::string& depName : m_dependencies) {
-        ModulePtr dep = g_modules.getModule(depName);
-        if(!dep) {
-            g_logger.error(stdext::format("Unable to load module '%s' because dependency '%s' was not found", m_name, depName));
-            return false;
+    try {
+        for(const std::string& depName : m_dependencies) {
+            ModulePtr dep = g_modules.getModule(depName);
+            if(!dep)
+                stdext::throw_exception(stdext::format("dependency '%s' was not found", m_name, depName));
+
+            if(!dep->isLoaded() && !dep->load())
+                stdext::throw_exception(stdext::format("dependency '%s' has failed to load", m_name, depName));
         }
 
-        if(!dep->isLoaded() && !dep->load()) {
-            g_logger.error(stdext::format("Unable to load module '%s' because dependency '%s' has failed to load", m_name, depName));
-            return false;
+        for(const std::string& script : m_scripts) {
+            g_lua.loadScript(script);
+            if(m_sandboxed) {
+                g_lua.getRef(m_sandboxEnv);
+                g_lua.setEnv();
+            }
+            g_lua.safeCall(0, 0);
+        }
+
+        const std::string& onLoadBuffer = std::get<0>(m_onLoadFunc);
+        const std::string& onLoadSource = std::get<1>(m_onLoadFunc);
+        if(!onLoadBuffer.empty()) {
+            g_lua.loadBuffer(onLoadBuffer, onLoadSource);
+            if(m_sandboxed) {
+                g_lua.getRef(m_sandboxEnv);
+                g_lua.setEnv();
+            }
+            g_lua.safeCall(0, 0);
         }
-    }
 
-    if(m_loadCallback)
-        m_loadCallback();
+        g_logger.debug(stdext::format("Loaded module '%s'", m_name));
+    } catch(stdext::exception& e) {
+        g_logger.error(stdext::format("Unable to load module '%s': %s", m_name, e.what()));
+        return false;
+    }
 
     m_loaded = true;
-    g_logger.debug(stdext::format("Loaded module '%s'", m_name));
     g_modules.updateModuleLoadOrder(asModule());
 
     for(const std::string& modName : m_loadLaterModules) {
@@ -70,8 +92,21 @@ bool Module::load()
 void Module::unload()
 {
     if(m_loaded) {
-        if(m_unloadCallback)
-            m_unloadCallback();
+        try {
+            const std::string& onUnloadBuffer = std::get<0>(m_onUnloadFunc);
+            const std::string& onUnloadSource = std::get<1>(m_onUnloadFunc);
+            if(!onUnloadBuffer.empty()) {
+                g_lua.loadBuffer(onUnloadBuffer, onUnloadSource);
+                if(m_sandboxed) {
+                    g_lua.getRef(m_sandboxEnv);
+                    g_lua.setEnv();
+                }
+                g_lua.safeCall(0, 0);
+            }
+        } catch(stdext::exception& e) {
+            g_logger.error(stdext::format("Unable to unload module '%s': %s", m_name, e.what()));
+        }
+
         m_loaded = false;
         //g_logger.info(stdext::format("Unloaded module '%s'", m_name));
         g_modules.updateModuleLoadOrder(asModule());
@@ -109,6 +144,7 @@ void Module::discover(const OTMLNodePtr& moduleNode)
     m_version = moduleNode->valueAt("version", none);
     m_autoLoad = moduleNode->valueAt<bool>("autoload", false);
     m_reloadable = moduleNode->valueAt<bool>("reloadable", true);
+    m_sandboxed = moduleNode->valueAt<bool>("sandboxed", false);
     m_autoLoadPriority = moduleNode->valueAt<int>("autoload-priority", 9999);
 
     if(OTMLNodePtr node = moduleNode->get("dependencies")) {
@@ -116,22 +152,19 @@ void Module::discover(const OTMLNodePtr& moduleNode)
             m_dependencies.push_back(tmp->value());
     }
 
-    // set onLoad callback
-    if(OTMLNodePtr node = moduleNode->get("@onLoad")) {
-        g_lua.loadFunction(node->value(), "@" + node->source() + "[" + node->tag() + "]");
-        g_lua.useValue();
-        m_loadCallback = g_lua.polymorphicPop<std::function<void()>>();
-    }
-
-    // set onUnload callback
-    if(OTMLNodePtr node = moduleNode->get("@onUnload")) {
-        g_lua.loadFunction(node->value(), "@" + node->source() + "[" + node->tag() + "]");
-        g_lua.useValue();
-        m_unloadCallback = g_lua.polymorphicPop<std::function<void()>>();
+    if(OTMLNodePtr node = moduleNode->get("scripts")) {
+        for(const OTMLNodePtr& tmp : node->children())
+            m_scripts.push_back(stdext::resolve_path(tmp->value(), node->source()));
     }
 
     if(OTMLNodePtr node = moduleNode->get("load-later")) {
         for(const OTMLNodePtr& tmp : node->children())
             m_loadLaterModules.push_back(tmp->value());
     }
+
+    if(OTMLNodePtr node = moduleNode->get("@onLoad"))
+        m_onLoadFunc = std::make_tuple(node->value(), "@" + node->source() + "[" + node->tag() + "]");
+
+    if(OTMLNodePtr node = moduleNode->get("@onUnload"))
+        m_onUnloadFunc = std::make_tuple(node->value(), "@" + node->source() + "[" + node->tag() + "]");
 }

src/framework/core/module.h

@@ -64,7 +64,11 @@ private:
     Boolean<false> m_loaded;
     Boolean<false> m_autoLoad;
     Boolean<false> m_reloadable;
+    Boolean<false> m_sandboxed;
     int m_autoLoadPriority;
+    int m_sandboxEnv;
+    std::tuple<std::string, std::string> m_onLoadFunc;
+    std::tuple<std::string, std::string> m_onUnloadFunc;
     std::string m_name;
     std::string m_description;
     std::string m_author;
@@ -73,6 +77,7 @@ private:
     std::function<void()> m_loadCallback;
     std::function<void()> m_unloadCallback;
     std::list<std::string> m_dependencies;
+    std::list<std::string> m_scripts;
     std::list<std::string> m_loadLaterModules;
 };
 

src/framework/luaengine/luainterface.cpp

@@ -306,13 +306,13 @@ bool LuaInterface::safeRunScript(const std::string& fileName)
 void LuaInterface::runScript(const std::string& fileName)
 {
     loadScript(fileName);
-    safeCall();
+    safeCall(0, 0);
 }
 
 void LuaInterface::runBuffer(const std::string& buffer, const std::string& source)
 {
     loadBuffer(buffer, source);
-    safeCall();
+    safeCall(0, 0);
 }
 
 void LuaInterface::loadScript(const std::string& fileName)
@@ -425,7 +425,7 @@ std::string LuaInterface::getCurrentSourcePath(int level)
     return path;
 }
 
-int LuaInterface::safeCall(int numArgs)
+int LuaInterface::safeCall(int numArgs, int numRets)
 {
     assert(hasIndex(-numArgs-1));
 
@@ -446,22 +446,33 @@ int LuaInterface::safeCall(int numArgs)
     if(ret != 0)
         throw LuaException(popString());
 
+    int rets = (stackSize() + numArgs + 1) - previousStackSize;
+    while(numRets != -1 && rets != numRets) {
+        if(rets < numRets) {
+            pushNil();
+            rets++;
+        } else {
+            pop();
+            rets--;
+        }
+    }
+
     // returns the number of results
-    return (stackSize() + numArgs + 1) - previousStackSize;
+    return rets;
 }
 
-int LuaInterface::signalCall(int numArgs, int requestedResults)
+int LuaInterface::signalCall(int numArgs, int numRets)
 {
-    int numRets = 0;
+    int rets = 0;
     int funcIndex = -numArgs-1;
 
     try {
         // must be a function
         if(isFunction(funcIndex)) {
-            numRets = safeCall(numArgs);
+            rets = safeCall(numArgs);
 
-            if(requestedResults != -1) {
-                if(numRets != requestedResults)
+            if(numRets != -1) {
+                if(rets != numRets)
                     throw LuaException("function call didn't return the expected number of results", 0);
             }
         }
@@ -491,8 +502,8 @@ int LuaInterface::signalCall(int numArgs, int requestedResults)
             }
             pop(numArgs + 1); // pops the table of function and arguments
 
-            if(requestedResults == 1) {
-                numRets = 1;
+            if(numRets == 1) {
+                rets = 1;
                 pushBoolean(done);
             }
         }
@@ -509,13 +520,13 @@ int LuaInterface::signalCall(int numArgs, int requestedResults)
     }
 
     // pushes nil values if needed
-    while(requestedResults != -1 && numRets < requestedResults) {
+    while(numRets != -1 && rets < numRets) {
         pushNil();
-        numRets++;
+        rets++;
     }
 
     // returns the number of results on the stack
-    return numRets;
+    return rets;
 }
 
 void LuaInterface::newEnvironment()

src/framework/luaengine/luainterface.h

@@ -174,13 +174,13 @@ public:
     /// results are pushed onto the stack.
     /// @exception LuaException is thrown on any lua error
     /// @return number of results
-    int safeCall(int numArgs = 0);
+    int safeCall(int numArgs = 0, int numRets = -1);
 
     /// Same as safeCall but catches exceptions and can also calls a table of functions,
     /// if any error occurs it will be reported to stdout and returns 0 results
     /// @param requestedResults is the number of results requested to pushes onto the stack,
     /// if supplied, the call will always pushes that number of results, even if it fails
-    int signalCall(int numArgs = 0, int requestedResults = -1);
+    int signalCall(int numArgs = 0, int numRets = -1);
 
     /// @brief Creates a new environment table
     /// The new environment table is redirected to the global environment (aka _G),

src/otclient/game.h

@@ -60,7 +60,7 @@ protected:
     void processWalkCancel(Otc::Direction direction);
 
     // message related
-    void processTextMessage(const std::string& type, const std::string& message);
+    void processTextMessage(const std::string& type, const std::string& message); // deprecated
     void processCreatureSpeak(const std::string& name, int level, Otc::SpeakType type, const std::string& message, int channelId, const Position& creaturePos);
 
     // container related

src/otclient/map.cpp

@@ -556,7 +556,6 @@ void Map::clean()
     m_towns.clear();
     m_houses.clear();
     m_creatures.clear();
-    m_monsters.clear();
     m_tilesRect = Rect(65534, 65534, 0, 0);
 }
 

src/otclient/protocolcodes.h

@@ -329,77 +329,6 @@ namespace Proto {
 #endif
     };
 
-    enum MessageTypes {
-#if PROTOCOL>=910
-        // 1-3
-        MessageConsoleBlue = 4,         // old
-        // 5-11
-        MessageConsoleRed = 12,         // old
-        // 13-15
-        MessageStatusDefault = 16,      // old
-        MessageWarning,                 // old
-        MessageEventAdvance,            // old
-        MessageStatusSmall,             // old
-        MessageInfoDescription,         // old
-        MessageDamageDealt,             // new
-        MessageDamageReceived,          // new
-        MessageHealed,                  // new
-        MessageExperience,              // new
-        MessageDamageOthers,            // new
-        MessageHealedOthers,            // new
-        MessageExperienceOthers,        // new
-        MessageEventDefault,            // old
-        MessageLoot,                    // new
-        MessageTradeNpc,                // unused
-        MessageChannelGuild,            // new
-        MessagePartyManagment,          // unused
-        MessageParty,                   // unused
-        MessageEventOrange,             // old
-        MessageConsoleOrange,           // old
-        MessageReport,                  // unused
-        MessageHotkeyUse,               // unused
-        MessageTutorialHint,            // unused
-
-        // unsupported
-        MessageConsoleOrange2 = 255
-#elif PROTOCOL>=861
-        MessageConsoleOrange = 13,
-        MessageConsoleOrange2,
-        MessageWarning,
-        MessageEventAdvance,
-        MessageEventDefault,
-        MessageStatusDefault,
-        MessageInfoDescription,
-        MessageStatusSmall,
-        MessageConsoleBlue,
-        MessageConsoleRed
-#elif PROTOCOL>=854
-        MessageConsoleRed = 18,
-        MessageConsoleOrange,
-        MessageConsoleOrange2,
-        MessageWarning,
-        MessageEventAdvance,
-        MessageEventDefault,
-        MessageStatusDefault,
-        MessageInfoDescription,
-        MessageStatusSmall,
-        MessageConsoleBlue
-#elif PROTOCOL>=810
-        MessageWarning = 18,
-        MessageEventAdvance,
-        MessageEventDefault,
-        MessageStatusDefault,
-        MessageInfoDescription,
-        MessageStatusSmall,
-        MessageConsoleBlue,
-        MessageConsoleRed,
-
-        // unsupported
-        MessageConsoleOrange = 255,
-        MessageConsoleOrange2,
-#endif
-    };
-
     enum CreatureType {
         CreatureTypePlayer = 0,
         CreatureTypeMonster,
@@ -459,24 +388,6 @@ namespace Proto {
                 return Proto::ServerSpeakSay;
         }
     }
-
-    inline std::string translateTextMessageType(int type) {
-        switch(type) {
-            case Proto::MessageConsoleOrange: return "consoleOrange";
-            case Proto::MessageConsoleOrange2: return "consoleOrange";
-            case Proto::MessageWarning: return "warning";
-            case Proto::MessageEventAdvance: return "eventAdvance";
-            case Proto::MessageEventDefault: return "eventDefault";
-            case Proto::MessageStatusDefault: return "statusDefault";
-            case Proto::MessageInfoDescription: return "infoDescription";
-            case Proto::MessageStatusSmall: return "statusSmall";
-            case Proto::MessageConsoleBlue: return "consoleBlue";
-            case Proto::MessageConsoleRed: return "consoleRed";
-            default:
-                g_logger.error(stdext::format("unknown protocol text message type %d", type));
-                return "unknown";
-        }
-    }
 }
 
 #endif

src/otclient/protocolgameparse.cpp

@@ -1067,12 +1067,9 @@ void ProtocolGame::parseRuleViolationLock(const InputMessagePtr& msg)
 
 void ProtocolGame::parseTextMessage(const InputMessagePtr& msg)
 {
-    int type = msg->getU8();
-
-    std::string typeDesc = Proto::translateTextMessageType(type);
-    std::string message = msg->getString();
-
-    g_game.processTextMessage(typeDesc, message);
+    msg->getU8(); // type
+    msg->getString(); // message
+    // this is now handled by game_textmessage module
 }
 
 void ProtocolGame::parseCancelWalk(const InputMessagePtr& msg)