251cced1f8
Various minor things done to project files Updated sample extension project file and updated makefile to the new unified version (more changes likely on the way) Updated regex project file and makefile --HG-- extra : convert_revision : svn%3A39bc706e-5318-0410-9160-8a85361fbb7c/trunk%401971
506 lines
13 KiB
C++
506 lines
13 KiB
C++
/**
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* vim: set ts=4 :
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* =============================================================================
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* SourceMod
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* Copyright (C) 2004-2008 AlliedModders LLC. All rights reserved.
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* =============================================================================
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*
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* This program is free software; you can redistribute it and/or modify it under
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* the terms of the GNU General Public License, version 3.0, as published by the
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* Free Software Foundation.
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*
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* This program is distributed in the hope that it will be useful, but WITHOUT
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* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
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* details.
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*
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* You should have received a copy of the GNU General Public License along with
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* this program. If not, see <http://www.gnu.org/licenses/>.
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*
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* As a special exception, AlliedModders LLC gives you permission to link the
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* code of this program (as well as its derivative works) to "Half-Life 2," the
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* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
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* by the Valve Corporation. You must obey the GNU General Public License in
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* all respects for all other code used. Additionally, AlliedModders LLC grants
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* this exception to all derivative works. AlliedModders LLC defines further
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* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
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* or <http://www.sourcemod.net/license.php>.
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*
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* Version: $Id$
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*/
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#include "HandleSys.h"
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#include "PluginSys.h"
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#include "UserMessages.h"
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#include "smn_usermsgs.h"
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HandleType_t g_WrBitBufType;
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HandleType_t g_RdBitBufType;
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Handle_t g_CurMsgHandle;
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Handle_t g_ReadBufHandle;
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bf_read g_ReadBitBuf;
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int g_MsgPlayers[256];
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bool g_IsMsgInExec = false;
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typedef List<MsgListenerWrapper *> MsgWrapperList;
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typedef List<MsgListenerWrapper *>::iterator MsgWrapperIter;
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class UsrMessageNatives :
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public SMGlobalClass,
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public IHandleTypeDispatch,
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public IPluginsListener
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{
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public:
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~UsrMessageNatives();
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public: //SMGlobalClass, IHandleTypeDispatch, IPluginListener
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void OnSourceModAllInitialized();
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void OnSourceModShutdown();
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void OnHandleDestroy(HandleType_t type, void *object);
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bool GetHandleApproxSize(HandleType_t type, void *object, unsigned int *pSize);
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void OnPluginUnloaded(IPlugin *plugin);
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public:
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MsgListenerWrapper *CreateListener(IPluginContext *pCtx);
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bool FindListener(int msgid, IPluginContext *pCtx, IPluginFunction *pHook, bool intercept, MsgWrapperIter *iter);
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bool DeleteListener(IPluginContext *pCtx, MsgWrapperIter iter);
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private:
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CStack<MsgListenerWrapper *> m_FreeListeners;
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};
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UsrMessageNatives::~UsrMessageNatives()
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{
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CStack<MsgListenerWrapper *>::iterator iter;
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for (iter=m_FreeListeners.begin(); iter!=m_FreeListeners.end(); iter++)
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{
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delete (*iter);
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}
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m_FreeListeners.popall();
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}
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void UsrMessageNatives::OnSourceModAllInitialized()
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{
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HandleAccess sec;
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g_HandleSys.InitAccessDefaults(NULL, &sec);
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sec.access[HandleAccess_Delete] = HANDLE_RESTRICT_IDENTITY;
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g_WrBitBufType = g_HandleSys.CreateType("BitBufWriter", this, 0, NULL, NULL, g_pCoreIdent, NULL);
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g_RdBitBufType = g_HandleSys.CreateType("BitBufReader", this, 0, NULL, &sec, g_pCoreIdent, NULL);
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g_ReadBufHandle = g_HandleSys.CreateHandle(g_RdBitBufType, &g_ReadBitBuf, NULL, g_pCoreIdent, NULL);
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g_PluginSys.AddPluginsListener(this);
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}
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void UsrMessageNatives::OnSourceModShutdown()
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{
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HandleSecurity sec;
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sec.pIdentity = g_pCoreIdent;
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g_HandleSys.FreeHandle(g_ReadBufHandle, &sec);
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g_HandleSys.RemoveType(g_WrBitBufType, g_pCoreIdent);
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g_HandleSys.RemoveType(g_RdBitBufType, g_pCoreIdent);
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g_WrBitBufType = 0;
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g_RdBitBufType = 0;
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}
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void UsrMessageNatives::OnHandleDestroy(HandleType_t type, void *object)
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{
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}
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bool UsrMessageNatives::GetHandleApproxSize(HandleType_t type, void *object, unsigned int *pSize)
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{
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*pSize = sizeof(bf_read);
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return true;
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}
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void UsrMessageNatives::OnPluginUnloaded(IPlugin *plugin)
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{
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MsgWrapperList *pList;
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if (plugin->GetProperty("MsgListeners", reinterpret_cast<void **>(&pList), true))
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{
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MsgWrapperIter iter;
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MsgListenerWrapper *pListener;
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for (iter=pList->begin(); iter!=pList->end(); iter++)
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{
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pListener = (*iter);
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if (g_UserMsgs.UnhookUserMessage(pListener->GetMessageId(), pListener, pListener->IsInterceptHook()))
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{
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m_FreeListeners.push(pListener);
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}
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}
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delete pList;
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}
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}
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MsgListenerWrapper *UsrMessageNatives::CreateListener(IPluginContext *pCtx)
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{
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MsgWrapperList *pList;
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MsgListenerWrapper *pListener;
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IPlugin *pl = g_PluginSys.FindPluginByContext(pCtx->GetContext());
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if (m_FreeListeners.empty())
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{
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pListener = new MsgListenerWrapper;
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} else {
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pListener = m_FreeListeners.front();
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m_FreeListeners.pop();
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}
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if (!pl->GetProperty("MsgListeners", reinterpret_cast<void **>(&pList)))
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{
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pList = new List<MsgListenerWrapper *>;
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pl->SetProperty("MsgListeners", pList);
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}
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pList->push_back(pListener);
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return pListener;
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}
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bool UsrMessageNatives::FindListener(int msgid, IPluginContext *pCtx, IPluginFunction *pHook, bool intercept, MsgWrapperIter *iter)
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{
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MsgWrapperList *pList;
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MsgWrapperIter _iter;
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MsgListenerWrapper *pListener;
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IPlugin *pl = g_PluginSys.FindPluginByContext(pCtx->GetContext());
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if (!pl->GetProperty("MsgListeners", reinterpret_cast<void **>(&pList)))
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{
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return false;
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}
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for (_iter=pList->begin(); _iter!=pList->end(); _iter++)
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{
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pListener = (*_iter);
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if ((msgid == pListener->GetMessageId())
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&& (intercept == pListener->IsInterceptHook())
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&& (pHook == pListener->GetHookedFunction()))
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{
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*iter = _iter;
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return true;
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}
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}
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return false;
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}
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bool UsrMessageNatives::DeleteListener(IPluginContext *pCtx, MsgWrapperIter iter)
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{
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MsgWrapperList *pList;
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MsgListenerWrapper *pListener;
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IPlugin *pl = g_PluginSys.FindPluginByContext(pCtx->GetContext());
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if (!pl->GetProperty("MsgListeners", reinterpret_cast<void **>(&pList)))
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{
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return false;
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}
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pListener = (*iter);
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pList->erase(iter);
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m_FreeListeners.push(pListener);
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return true;
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}
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/***************************************
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* *
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* USER MESSAGE WRAPPER IMPLEMENTATION *
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* *
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***************************************/
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void MsgListenerWrapper::Initialize(int msgid, IPluginFunction *hook, IPluginFunction *notify, bool intercept)
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{
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if (intercept)
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{
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m_Intercept = hook;
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m_Hook = NULL;
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} else {
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m_Hook = hook;
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m_Intercept = NULL;
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}
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if (notify)
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{
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m_Notify = notify;
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} else {
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m_Notify = NULL;
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}
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m_MsgId = msgid;
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m_IsInterceptHook = intercept;
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}
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size_t MsgListenerWrapper::_FillInPlayers(int *pl_array, IRecipientFilter *pFilter)
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{
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size_t size = static_cast<size_t>(pFilter->GetRecipientCount());
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for (size_t i=0; i<size; i++)
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{
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pl_array[i] = pFilter->GetRecipientIndex(i);
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}
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return size;
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}
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bool MsgListenerWrapper::IsInterceptHook() const
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{
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return m_IsInterceptHook;
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}
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int MsgListenerWrapper::GetMessageId() const
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{
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return m_MsgId;
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}
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IPluginFunction *MsgListenerWrapper::GetHookedFunction() const
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{
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if (m_Hook)
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{
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return m_Hook;
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} else {
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return m_Intercept;
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}
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}
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IPluginFunction *MsgListenerWrapper::GetNotifyFunction() const
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{
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return m_Notify;
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}
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void MsgListenerWrapper::OnUserMessage(int msg_id, bf_write *bf, IRecipientFilter *pFilter)
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{
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cell_t res;
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size_t size = _FillInPlayers(g_MsgPlayers, pFilter);
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g_ReadBitBuf.StartReading(bf->GetBasePointer(), bf->GetNumBytesWritten());
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m_Hook->PushCell(msg_id);
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m_Hook->PushCell(g_ReadBufHandle);
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m_Hook->PushArray(g_MsgPlayers, size);
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m_Hook->PushCell(size);
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m_Hook->PushCell(pFilter->IsReliable());
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m_Hook->PushCell(pFilter->IsInitMessage());
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m_Hook->Execute(&res);
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}
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ResultType MsgListenerWrapper::InterceptUserMessage(int msg_id, bf_write *bf, IRecipientFilter *pFilter)
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{
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cell_t res = static_cast<cell_t>(Pl_Continue);
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size_t size = _FillInPlayers(g_MsgPlayers, pFilter);
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g_ReadBitBuf.StartReading(bf->GetBasePointer(), bf->GetNumBytesWritten());
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m_Intercept->PushCell(msg_id);
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m_Intercept->PushCell(g_ReadBufHandle);
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m_Intercept->PushArray(g_MsgPlayers, size);
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m_Intercept->PushCell(size);
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m_Intercept->PushCell(pFilter->IsReliable());
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m_Intercept->PushCell(pFilter->IsInitMessage());
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m_Intercept->Execute(&res);
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return static_cast<ResultType>(res);
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}
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void MsgListenerWrapper::OnUserMessageSent(int msg_id)
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{
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if (!m_Notify)
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{
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return;
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}
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cell_t res;
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m_Notify->PushCell(msg_id);
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m_Notify->Execute(&res);
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}
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/***************************************
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* *
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* USER MESSAGE NATIVE IMPLEMENTATIONS *
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* *
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***************************************/
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static UsrMessageNatives s_UsrMessageNatives;
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static cell_t smn_GetUserMessageId(IPluginContext *pCtx, const cell_t *params)
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{
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char *msgname;
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pCtx->LocalToString(params[1], &msgname);
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return g_UserMsgs.GetMessageIndex(msgname);
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}
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static cell_t smn_GetUserMessageName(IPluginContext *pCtx, const cell_t *params)
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{
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char *msgname;
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pCtx->LocalToPhysAddr(params[2], (cell_t **)&msgname);
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return g_UserMsgs.GetMessageName(params[1], msgname, params[3]);
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}
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static cell_t smn_StartMessage(IPluginContext *pCtx, const cell_t *params)
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{
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char *msgname;
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cell_t *cl_array;
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int msgid;
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bf_write *pBitBuf;
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if (g_IsMsgInExec)
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{
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return pCtx->ThrowNativeError("Unable to execute a new message, there is already one in progress");
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}
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pCtx->LocalToString(params[1], &msgname);
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if ((msgid=g_UserMsgs.GetMessageIndex(msgname)) == INVALID_MESSAGE_ID)
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{
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return pCtx->ThrowNativeError("Invalid message name: \"%s\"", msgname);
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}
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pCtx->LocalToPhysAddr(params[2], &cl_array);
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pBitBuf = g_UserMsgs.StartMessage(msgid, cl_array, params[3], params[4]);
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if (!pBitBuf)
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{
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return pCtx->ThrowNativeError("Unable to execute a new message while in hook");
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}
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g_CurMsgHandle = g_HandleSys.CreateHandle(g_WrBitBufType, pBitBuf, pCtx->GetIdentity(), g_pCoreIdent, NULL);
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g_IsMsgInExec = true;
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return g_CurMsgHandle;
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}
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static cell_t smn_StartMessageEx(IPluginContext *pCtx, const cell_t *params)
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{
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cell_t *cl_array;
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bf_write *pBitBuf;
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int msgid = params[1];
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if (g_IsMsgInExec)
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{
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return pCtx->ThrowNativeError("Unable to execute a new message, there is already one in progress");
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}
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if (msgid < 0 || msgid >= 255)
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{
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return pCtx->ThrowNativeError("Invalid message id supplied (%d)", msgid);
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}
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pCtx->LocalToPhysAddr(params[2], &cl_array);
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pBitBuf = g_UserMsgs.StartMessage(msgid, cl_array, params[3], params[4]);
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if (!pBitBuf)
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{
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return pCtx->ThrowNativeError("Unable to execute a new message while in hook");
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}
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g_CurMsgHandle = g_HandleSys.CreateHandle(g_WrBitBufType, pBitBuf, pCtx->GetIdentity(), g_pCoreIdent, NULL);
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g_IsMsgInExec = true;
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return g_CurMsgHandle;
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}
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static cell_t smn_EndMessage(IPluginContext *pCtx, const cell_t *params)
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{
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HandleSecurity sec;
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if (!g_IsMsgInExec)
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{
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return pCtx->ThrowNativeError("Unable to end message, no message is in progress");
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}
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g_UserMsgs.EndMessage();
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sec.pOwner = pCtx->GetIdentity();
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sec.pIdentity = g_pCoreIdent;
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g_HandleSys.FreeHandle(g_CurMsgHandle, &sec);
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g_IsMsgInExec = false;
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return 1;
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}
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static cell_t smn_HookUserMessage(IPluginContext *pCtx, const cell_t *params)
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{
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IPluginFunction *pHook, *pNotify;
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MsgListenerWrapper *pListener;
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bool intercept;
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int msgid = params[1];
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if (msgid < 0 || msgid >= 255)
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{
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return pCtx->ThrowNativeError("Invalid message id supplied (%d)", msgid);
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}
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pHook = pCtx->GetFunctionById(params[2]);
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if (!pHook)
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{
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return pCtx->ThrowNativeError("Invalid function id (%X)", params[2]);
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}
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pNotify = pCtx->GetFunctionById(params[4]);
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intercept = (params[3]) ? true : false;
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pListener = s_UsrMessageNatives.CreateListener(pCtx);
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pListener->Initialize(msgid, pHook, pNotify, intercept);
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g_UserMsgs.HookUserMessage(msgid, pListener, intercept);
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return 1;
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}
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static cell_t smn_UnhookUserMessage(IPluginContext *pCtx, const cell_t *params)
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{
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IPluginFunction *pFunc;
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MsgListenerWrapper *pListener;
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MsgWrapperIter iter;
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bool intercept;
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int msgid = params[1];
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if (msgid < 0 || msgid >= 255)
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{
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return pCtx->ThrowNativeError("Invalid message id supplied (%d)", msgid);
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}
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pFunc = pCtx->GetFunctionById(params[2]);
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if (!pFunc)
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{
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return pCtx->ThrowNativeError("Invalid function id (%X)", params[2]);
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}
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intercept = (params[3]) ? true : false;
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if (!s_UsrMessageNatives.FindListener(msgid, pCtx, pFunc, intercept, &iter))
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{
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return pCtx->ThrowNativeError("Unable to unhook the current user message");
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}
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pListener = (*iter);
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if (!g_UserMsgs.UnhookUserMessage(msgid, pListener, intercept))
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{
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return pCtx->ThrowNativeError("Unable to unhook the current user message");
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}
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s_UsrMessageNatives.DeleteListener(pCtx, iter);
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return 1;
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}
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REGISTER_NATIVES(usrmsgnatives)
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{
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{"GetUserMessageId", smn_GetUserMessageId},
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{"GetUserMessageName", smn_GetUserMessageName},
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{"StartMessage", smn_StartMessage},
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{"StartMessageEx", smn_StartMessageEx},
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{"EndMessage", smn_EndMessage},
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{"HookUserMessage", smn_HookUserMessage},
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{"UnhookUserMessage", smn_UnhookUserMessage},
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{NULL, NULL}
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};
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