2007-10-04 22:15:25 +02:00
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/**
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* vim: set ts=4 :
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* ======================================================
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* Metamod:Source
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* Copyright (C) 2004-2007 AlliedModders LLC and authors.
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* All rights reserved.
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* ======================================================
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*
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* This software is provided 'as-is', without any express or implied warranty.
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* In no event will the authors be held liable for any damages arising from
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* the use of this software.
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*
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* Permission is granted to anyone to use this software for any purpose,
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* including commercial applications, and to alter it and redistribute it
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* freely, subject to the following restrictions:
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*
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* 1. The origin of this software must not be misrepresented; you must not
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* claim that you wrote the original software. If you use this software in a
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* product, an acknowledgment in the product documentation would be
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* appreciated but is not required.
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* 2. Altered source versions must be plainly marked as such, and must not be
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* misrepresented as being the original software.
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* 3. This notice may not be removed or altered from any source distribution.
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*
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* Version: $Id$
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*/
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#if defined _DEBUG
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#define DEBUG2
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#undef _DEBUG
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#endif
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#include <sourcehook.h>
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#include <convar.h>
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#include <eiface.h>
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#include <tier0/icommandline.h>
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#include <tier1/utldict.h>
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#include <sh_vector.h>
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#include <sh_string.h>
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#include "../metamod_util.h"
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#include "provider_ep2.h"
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#include "console.h"
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#include "metamod_console.h"
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#include "vsp_listener.h"
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#if defined DEBUG2
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#undef DEBUG2
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#define _DEBUG
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#endif
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/* Types */
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typedef void (*CONPRINTF_FUNC)(const char *, ...);
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struct UsrMsgInfo
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{
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int size;
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String name;
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};
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/* Imports */
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#undef CommandLine
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DLL_IMPORT ICommandLine *CommandLine();
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/* Functions */
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bool CacheUserMessages();
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void ClientCommand(edict_t *pEdict, const CCommand &args);
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void LocalCommand_Meta(const CCommand &args);
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void _ServerCommand();
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/* Variables */
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bool usermsgs_extracted = false;
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CVector<UsrMsgInfo> usermsgs_list;
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ICvar *icvar = NULL;
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ISmmAPI *metamod_api = NULL;
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IVEngineServer *engine = NULL;
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IServerGameClients *gameclients = NULL;
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VSPListener g_VspListener;
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BaseProvider g_Ep1Provider;
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IMetamodSourceProvider *provider = &g_Ep1Provider;
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List<ConCommandBase *> conbases_unreg;
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ConCommand meta_local_cmd("meta", LocalCommand_Meta, "Metamod:Source control options");
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SH_DECL_HOOK2_void(IServerGameClients, ClientCommand, SH_NOATTRIB, 0, edict_t *, const CCommand &);
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void BaseProvider::ConsolePrint(const char *str)
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{
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ConMsg("%s", str);
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}
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void BaseProvider::Notify_DLLInit_Pre(void *gamedll,
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CreateInterfaceFn engineFactory,
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CreateInterfaceFn serverFactory)
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{
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server = (IServerGameDLL *)gamedll;
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engine = (IVEngineServer *)((engineFactory)(INTERFACEVERSION_VENGINESERVER, NULL));
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if (!engine)
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{
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DisplayError("Could not find IVEngineServer! Metamod cannot load.");
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return;
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}
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icvar = (ICvar *)((engineFactory)(CVAR_INTERFACE_VERSION, NULL));
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if (!icvar)
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{
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DisplayError("Could not find ICvar! Metamod cannot load.");
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return;
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}
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if ((gameclients = (IServerGameClients *)(serverFactory("ServerGameClients003", NULL)))
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== NULL)
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{
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gameclients = (IServerGameClients *)(serverFactory("ServerGameClients004", NULL));
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}
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RegisterConCommandBase(&meta_local_cmd);
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conbases_unreg.push_back(&meta_local_cmd);
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usermsgs_extracted = CacheUserMessages();
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if (gameclients)
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{
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SH_ADD_HOOK_STATICFUNC(IServerGameClients, ClientCommand, gameclients, ClientCommand, false);
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}
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}
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void BaseProvider::Notify_DLLShutdown_Pre()
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{
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List<ConCommandBase *>::iterator iter;
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for (iter = conbases_unreg.begin();
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iter != conbases_unreg.end();
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iter++)
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{
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UnregisterConCommandBase((*iter));
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}
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}
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bool BaseProvider::IsRemotePrintingAvailable()
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{
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return true;
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}
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void BaseProvider::ClientConsolePrint(edict_t *client, const char *message)
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{
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engine->ClientPrintf(client, message);
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}
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void BaseProvider::ServerCommand(const char *cmd)
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{
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engine->ServerCommand(cmd);
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}
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const char *BaseProvider::GetConVarString(ConVar *convar)
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{
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if (convar == NULL)
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{
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return NULL;
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}
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return convar->GetString();
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}
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bool BaseProvider::IsConCommandBaseACommand(ConCommandBase *pCommand)
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{
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return pCommand->IsCommand();
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}
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bool BaseProvider::IsSourceEngineBuildCompatible(int build)
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{
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return (build == SOURCE_ENGINE_ORIGINAL
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|| build == SOURCE_ENGINE_EPISODEONE);
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}
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const char *BaseProvider::GetCommandLineValue(const char *key, const char *defval)
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{
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if (key[0] == '-' || key[0] == '+')
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{
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return CommandLine_Tier0()->ParmValue(key, defval);
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}
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else if (icvar)
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{
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const char *val;
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if ((val = icvar->GetCommandLineValue(key)) == NULL)
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{
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return defval;
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}
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return val;
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}
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return NULL;
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}
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int BaseProvider::TryServerGameDLL(const char *iface)
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{
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if (strncmp(iface, "ServerGameDLL", 13) != 0)
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{
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return 0;
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}
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return atoi(&iface[13]);
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}
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bool BaseProvider::LogMessage(const char *buffer)
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{
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if (!engine)
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{
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return false;
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}
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engine->LogPrint(buffer);
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return true;
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}
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bool BaseProvider::GetHookInfo(ProvidedHooks hook, SourceHook::MemFuncInfo *pInfo)
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{
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SourceHook::MemFuncInfo mfi = {true, -1, 0, 0};
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if (hook == ProvidedHook_LevelInit)
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{
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SourceHook::GetFuncInfo(&IServerGameDLL::LevelInit, mfi);
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}
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else if (hook == ProvidedHook_LevelShutdown)
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{
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SourceHook::GetFuncInfo(&IServerGameDLL::LevelShutdown, mfi);
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}
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else if (hook == ProvidedHook_GameInit)
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{
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SourceHook::GetFuncInfo(&IServerGameDLL::GameInit, mfi);
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}
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else if (hook == ProvidedHook_DLLShutdown)
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{
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SourceHook::GetFuncInfo(&IServerGameDLL::DLLShutdown, mfi);
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}
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else if (hook == ProvidedHook_DLLInit)
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{
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SourceHook::GetFuncInfo(&IServerGameDLL::DLLInit, mfi);
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}
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*pInfo = mfi;
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return (mfi.thisptroffs >= 0);
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}
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void BaseProvider::DisplayError(const char *fmt, ...)
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{
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va_list ap;
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char buffer[2048];
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va_start(ap, fmt);
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UTIL_FormatArgs(buffer, sizeof(buffer), fmt, ap);
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va_end(ap);
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Error(buffer);
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}
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void BaseProvider::DisplayWarning(const char *fmt, ...)
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{
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va_list ap;
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char buffer[2048];
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va_start(ap, fmt);
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UTIL_FormatArgs(buffer, sizeof(buffer), fmt, ap);
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va_end(ap);
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Warning(buffer);
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}
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IConCommandBaseAccessor *BaseProvider::GetConCommandBaseAccessor()
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{
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return &g_SMConVarAccessor;
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}
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bool BaseProvider::RegisterConCommandBase(ConCommandBase *pCommand)
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{
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return g_SMConVarAccessor.Register(pCommand);
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}
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void BaseProvider::UnregisterConCommandBase(ConCommandBase *pCommand)
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{
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return g_SMConVarAccessor.Unregister(pCommand);
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}
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int BaseProvider::GetUserMessageCount()
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{
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if (!usermsgs_extracted)
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{
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return -1;
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}
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return (int)usermsgs_list.size();
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}
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int BaseProvider::FindUserMessage(const char *name, int *size)
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{
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for (size_t i = 0; i < usermsgs_list.size(); i++)
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{
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if (usermsgs_list[i].name.compare(name) == 0)
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{
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if (size)
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{
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*size = usermsgs_list[i].size;
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}
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return (int)i;
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}
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}
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return -1;
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}
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const char *BaseProvider::GetUserMessage(int index, int *size)
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{
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if (!usermsgs_extracted || index < 0 || index >= (int)usermsgs_list.size())
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{
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return NULL;
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}
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if (size)
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{
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*size = usermsgs_list[index].size;
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}
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return usermsgs_list[index].name.c_str();
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}
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const char *BaseProvider::GetGameDescription()
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{
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return server->GetGameDescription();
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}
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ConVar *BaseProvider::CreateConVar(const char *name,
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const char *defval,
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const char *help,
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int flags)
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{
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int newflags = 0;
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if (flags & ConVarFlag_Notify)
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{
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newflags |= FCVAR_NOTIFY;
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}
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if (flags & ConVarFlag_Replicated)
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{
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newflags |= FCVAR_REPLICATED;
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}
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if (flags & ConVarFlag_SpOnly)
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{
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newflags |= FCVAR_SPONLY;
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}
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ConVar *pVar = new ConVar(name, defval, newflags, help);
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RegisterConCommandBase(pVar);
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conbases_unreg.push_back(pVar);
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return pVar;
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}
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IServerPluginCallbacks *BaseProvider::GetVSPCallbacks(const char *iface)
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{
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g_VspListener.SetLoadable(true);
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return &g_VspListener;
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}
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class GlobCommand : public IMetamodSourceCommandInfo
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{
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public:
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GlobCommand(const CCommand *cmd) : m_cmd(cmd)
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{
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}
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public:
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unsigned int GetArgCount()
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{
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return m_cmd->ArgC();
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}
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const char *GetArg(unsigned int num)
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{
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return m_cmd->Arg(num);
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}
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const char *GetArgString()
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{
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return m_cmd->ArgS();
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}
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private:
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const CCommand *m_cmd;
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};
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void LocalCommand_Meta(const CCommand &args)
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{
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GlobCommand cmd(&args);
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Command_Meta(&cmd);
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}
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void ClientCommand(edict_t *pEdict, const CCommand &_cmd)
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{
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GlobCommand cmd(&_cmd);
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if (strcmp(cmd.GetArg(0), "meta") == 0)
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{
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Command_ClientMeta(pEdict, &cmd);
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}
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}
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bool vcmp(const void *_addr1, const void *_addr2, size_t len)
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{
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unsigned char *addr1 = (unsigned char *)_addr1;
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unsigned char *addr2 = (unsigned char *)_addr2;
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for (size_t i=0; i<len; i++)
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{
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if (addr2[i] == '*')
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{
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continue;
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}
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if (addr1[i] != addr2[i])
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{
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|
|
|
return false;
|
|
|
|
}
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
//////////////////////////////////////////////////////////////////////
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// EVEN MORE HACKS HERE! YOU HAVE BEEN WARNED! //
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// Signatures necessary in finding the pointer to the CUtlDict that //
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// stores user message information. //
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// IServerGameDLL::GetUserMessageInfo() normally crashes with bad //
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// message indices. This is our answer to it. Yuck! <:-( //
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//////////////////////////////////////////////////////////////////////
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#ifdef OS_WIN32
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/* General Windows sig */
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#define MSGCLASS_SIGLEN 7
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#define MSGCLASS_SIG "\x8B\x0D\x2A\x2A\x2A\x2A\x56"
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#define MSGCLASS_OFFS 2
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/* Dystopia Wimdows hack */
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|
#define MSGCLASS2_SIGLEN 16
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|
#define MSGCLASS2_SIG "\x56\x8B\x74\x24\x2A\x85\xF6\x7C\x2A\x3B\x35\x2A\x2A\x2A\x2A\x7D"
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|
#define MSGCLASS2_OFFS 11
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|
/* Windows frame pointer sig */
|
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|
#define MSGCLASS3_SIGLEN 18
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|
#define MSGCLASS3_SIG "\x55\x8B\xEC\x51\x89\x2A\x2A\x8B\x2A\x2A\x50\x8B\x0D\x2A\x2A\x2A\x2A\xE8"
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|
#define MSGCLASS3_OFFS 13
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|
#elif defined OS_LINUX
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|
|
/* No frame pointer sig */
|
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|
|
#define MSGCLASS_SIGLEN 14
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|
#define MSGCLASS_SIG "\x53\x83\xEC\x2A\x8B\x2A\x2A\x2A\xA1\x2A\x2A\x2A\x2A\x89"
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|
|
#define MSGCLASS_OFFS 9
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|
|
|
/* Frame pointer sig */
|
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|
|
#define MSGCLASS2_SIGLEN 16
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|
|
#define MSGCLASS2_SIG "\x55\x89\xE5\x53\x83\xEC\x2A\x8B\x2A\x2A\xA1\x2A\x2A\x2A\x2A\x89"
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|
|
#define MSGCLASS2_OFFS 11
|
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|
|
#endif
|
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|
|
struct UserMessage
|
|
|
|
{
|
|
|
|
int size;
|
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|
|
const char *name;
|
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|
|
};
|
|
|
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|
|
|
typedef CUtlDict<UserMessage *, int> UserMsgDict;
|
|
|
|
|
|
|
|
/* This is the ugliest function in all of SourceMM */
|
|
|
|
bool CacheUserMessages()
|
|
|
|
{
|
|
|
|
/* Get address of original GetUserMessageInfo() */
|
|
|
|
char *vfunc = (char *)SH_GET_ORIG_VFNPTR_ENTRY(server, &IServerGameDLL::GetUserMessageInfo);
|
|
|
|
|
|
|
|
/* Oh dear, we have a relative jump on our hands
|
|
|
|
* PVK II on Windows made me do this, but I suppose it doesn't hurt to check this on Linux too...
|
|
|
|
*/
|
|
|
|
if (*vfunc == '\xE9')
|
|
|
|
{
|
|
|
|
/* Get address from displacement...
|
|
|
|
*
|
|
|
|
* Add 5 because it's relative to next instruction:
|
|
|
|
* Opcode <1 byte> + 32-bit displacement <4 bytes>
|
|
|
|
*/
|
|
|
|
vfunc += *reinterpret_cast<int *>(vfunc + 1) + 5;
|
|
|
|
}
|
|
|
|
|
|
|
|
CUtlDict<UserMessage *, int> *dict = NULL;
|
|
|
|
|
|
|
|
if (vcmp(vfunc, MSGCLASS_SIG, MSGCLASS_SIGLEN))
|
|
|
|
{
|
|
|
|
/* Get address of CUserMessages instance */
|
|
|
|
char **userMsgClass = *reinterpret_cast<char ***>(vfunc + MSGCLASS_OFFS);
|
|
|
|
|
|
|
|
/* Get address of CUserMessages::m_UserMessages */
|
|
|
|
dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
|
|
|
|
}
|
|
|
|
else if (vcmp(vfunc, MSGCLASS2_SIG, MSGCLASS2_SIGLEN))
|
|
|
|
{
|
|
|
|
#ifdef OS_WIN32
|
|
|
|
/* If we get here, the code is possibly inlined like in Dystopia */
|
|
|
|
|
|
|
|
/* Get the address of the CUtlRBTree */
|
|
|
|
char *rbtree = *reinterpret_cast<char **>(vfunc + MSGCLASS2_OFFS);
|
|
|
|
|
|
|
|
/* CUtlDict should be 8 bytes before the CUtlRBTree (hacktacular!) */
|
|
|
|
dict = reinterpret_cast<UserMsgDict *>(rbtree - 8);
|
|
|
|
#elif defined OS_LINUX
|
|
|
|
/* Get address of CUserMessages instance */
|
|
|
|
char **userMsgClass = *reinterpret_cast<char ***>(vfunc + MSGCLASS2_OFFS);
|
|
|
|
|
|
|
|
/* Get address of CUserMessages::m_UserMessages */
|
|
|
|
dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
|
|
|
|
#endif
|
|
|
|
#ifdef OS_WIN32
|
|
|
|
}
|
|
|
|
else if (vcmp(vfunc, MSGCLASS3_SIG, MSGCLASS3_SIGLEN))
|
|
|
|
{
|
|
|
|
/* Get address of CUserMessages instance */
|
|
|
|
char **userMsgClass = *reinterpret_cast<char ***>(vfunc + MSGCLASS3_OFFS);
|
|
|
|
|
|
|
|
/* Get address of CUserMessages::m_UserMessages */
|
|
|
|
dict = reinterpret_cast<UserMsgDict *>(*userMsgClass);
|
|
|
|
#endif
|
|
|
|
}
|
|
|
|
|
2007-10-08 22:42:32 +02:00
|
|
|
#if !defined OS_WIN32
|
|
|
|
if (dict == NULL)
|
|
|
|
{
|
|
|
|
char path[255];
|
|
|
|
if (GetFileOfAddress(vfunc, path, sizeof(path)))
|
|
|
|
{
|
|
|
|
void *handle = dlopen(path, RTLD_NOW);
|
|
|
|
if (handle != NULL)
|
|
|
|
{
|
|
|
|
void *addr = dlsym(handle, "usermessages");
|
|
|
|
dict = (UserMsgDict *)*(void **)addr;
|
|
|
|
dlclose(handle);
|
|
|
|
}
|
|
|
|
}
|
|
|
|
}
|
|
|
|
#endif
|
|
|
|
|
|
|
|
if (dict != NULL)
|
2007-10-04 22:15:25 +02:00
|
|
|
{
|
|
|
|
int msg_count = dict->Count();
|
|
|
|
|
|
|
|
/* Ensure that count is within bounds of an unsigned byte, because that's what engine supports */
|
|
|
|
if (msg_count < 0 || msg_count > 255)
|
|
|
|
{
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|
|
|
|
UserMessage *msg;
|
|
|
|
UsrMsgInfo u_msg;
|
|
|
|
|
|
|
|
/* Cache messages in our CUtlDict */
|
|
|
|
for (int i = 0; i < msg_count; i++)
|
|
|
|
{
|
|
|
|
msg = dict->Element(i);
|
|
|
|
u_msg.name = msg->name;
|
|
|
|
u_msg.size = msg->size;
|
|
|
|
usermsgs_list.push_back(u_msg);
|
|
|
|
}
|
|
|
|
|
|
|
|
return true;
|
|
|
|
}
|
|
|
|
|
|
|
|
return false;
|
|
|
|
}
|
|
|
|
|