sourcemod/loader/loader.cpp
2017-12-20 01:56:23 -06:00

401 lines
9.7 KiB
C++

/**
* vim: set ts=4 sw=4 tw=99 noet :
* =============================================================================
* SourceMod
* Copyright (C) 2004-2010 AlliedModders LLC. All rights reserved.
* =============================================================================
*
* This program is free software; you can redistribute it and/or modify it under
* the terms of the GNU General Public License, version 3.0, as published by the
* Free Software Foundation.
*
* This program is distributed in the hope that it will be useful, but WITHOUT
* ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
* FOR A PARTICULAR PURPOSE. See the GNU General Public License for more
* details.
*
* You should have received a copy of the GNU General Public License along with
* this program. If not, see <http://www.gnu.org/licenses/>.
*
* As a special exception, AlliedModders LLC gives you permission to link the
* code of this program (as well as its derivative works) to "Half-Life 2," the
* "Source Engine," the "SourcePawn JIT," and any Game MODs that run on software
* by the Valve Corporation. You must obey the GNU General Public License in
* all respects for all other code used. Additionally, AlliedModders LLC grants
* this exception to all derivative works. AlliedModders LLC defines further
* exceptions, found in LICENSE.txt (as of this writing, version JULY-31-2007),
* or <http://www.sourcemod.net/license.php>.
*/
#include <ISmmPluginExt.h>
#include <stdarg.h>
#include <string.h>
#include <stdio.h>
#include <stdlib.h>
#if defined _MSC_VER
#define DLL_EXPORT extern "C" __declspec(dllexport)
#define openlib(lib) LoadLibrary(lib)
#define closelib(lib) FreeLibrary(lib)
#define findsym(lib, sym) GetProcAddress(lib, sym)
#define PLATFORM_EXT ".dll"
#define vsnprintf _vsnprintf
#define PATH_SEP_CHAR "\\"
#include <Windows.h>
#else
#define DLL_EXPORT extern "C" __attribute__((visibility("default")))
#define openlib(lib) dlopen(lib, RTLD_NOW)
#define closelib(lib) dlclose(lib)
#define findsym(lib, sym) dlsym(lib, sym)
#if defined __linux__
#define PLATFORM_EXT ".so"
#elif defined __APPLE__
#define PLATFORM_EXT ".dylib"
#endif
typedef void * HINSTANCE;
#define PATH_SEP_CHAR "/"
#include <dlfcn.h>
#endif
#if defined(_WIN64) || defined(__x86_64__)
#define PLATFORM_ARCH_FOLDER "x64" PATH_SEP_CHAR
#else
#define PLATFORM_ARCH_FOLDER ""
#endif
#define METAMOD_API_MAJOR 2
#define FILENAME_1_6_EP2 PLATFORM_ARCH_FOLDER "sourcemod.2.ep2" PLATFORM_EXT
#define FILENAME_1_6_EP1 PLATFORM_ARCH_FOLDER "sourcemod.2.ep1" PLATFORM_EXT
#define FILENAME_1_6_L4D PLATFORM_ARCH_FOLDER "sourcemod.2.l4d" PLATFORM_EXT
#define FILENAME_1_6_DARKM PLATFORM_ARCH_FOLDER "sourcemod.2.darkm" PLATFORM_EXT
#define FILENAME_1_6_L4D2 PLATFORM_ARCH_FOLDER "sourcemod.2.l4d2" PLATFORM_EXT
#define FILENAME_1_6_SWARM PLATFORM_ARCH_FOLDER "sourcemod.2.swarm" PLATFORM_EXT
#define FILENAME_1_6_BGT PLATFORM_ARCH_FOLDER "sourcemod.2.bgt" PLATFORM_EXT
#define FILENAME_1_6_EYE PLATFORM_ARCH_FOLDER "sourcemod.2.eye" PLATFORM_EXT
#define FILENAME_1_6_PORTAL2 PLATFORM_ARCH_FOLDER "sourcemod.2.portal2" PLATFORM_EXT
#define FILENAME_1_6_CSGO PLATFORM_ARCH_FOLDER "sourcemod.2.csgo" PLATFORM_EXT
#define FILENAME_1_6_CSS PLATFORM_ARCH_FOLDER "sourcemod.2.css" PLATFORM_EXT
#define FILENAME_1_6_HL2DM PLATFORM_ARCH_FOLDER "sourcemod.2.hl2dm" PLATFORM_EXT
#define FILENAME_1_6_DODS PLATFORM_ARCH_FOLDER "sourcemod.2.dods" PLATFORM_EXT
#define FILENAME_1_6_SDK2013 PLATFORM_ARCH_FOLDER "sourcemod.2.sdk2013" PLATFORM_EXT
#define FILENAME_1_6_TF2 PLATFORM_ARCH_FOLDER "sourcemod.2.tf2" PLATFORM_EXT
#define FILENAME_1_6_ND PLATFORM_ARCH_FOLDER "sourcemod.2.nd" PLATFORM_EXT
#define FILENAME_1_6_BLADE PLATFORM_ARCH_FOLDER "sourcemod.2.blade" PLATFORM_EXT
#define FILENAME_1_6_INSURGENCY PLATFORM_ARCH_FOLDER "sourcemod.2.insurgency" PLATFORM_EXT
#define FILENAME_1_6_DOI PLATFORM_ARCH_FOLDER "sourcemod.2.doi" PLATFORM_EXT
#define FILENAME_1_6_CONTAGION PLATFORM_ARCH_FOLDER "sourcemod.2.contagion" PLATFORM_EXT
#define FILENAME_1_6_BMS PLATFORM_ARCH_FOLDER "sourcemod.2.bms" PLATFORM_EXT
HINSTANCE g_hCore = NULL;
bool load_attempted = false;
size_t UTIL_Format(char *buffer, size_t maxlength, const char *fmt, ...);
class FailPlugin : public SourceMM::ISmmFailPlugin
{
public:
int GetApiVersion()
{
return fail_version;
}
bool Load(SourceMM::PluginId id, SourceMM::ISmmAPI *ismm, char *error, size_t maxlength, bool late)
{
if (error != NULL && maxlength != 0)
{
UTIL_Format(error, maxlength, "%s", error_buffer);
}
return false;
}
int fail_version;
char error_buffer[512];
} s_FailPlugin;
size_t UTIL_Format(char *buffer, size_t maxlength, const char *fmt, ...)
{
va_list ap;
va_start(ap, fmt);
size_t len = vsnprintf(buffer, maxlength, fmt, ap);
va_end(ap);
if (len >= maxlength)
{
len = maxlength - 1;
buffer[len] = '\0';
}
return len;
}
METAMOD_PLUGIN *_GetPluginPtr(const char *path, int fail_api)
{
METAMOD_FN_ORIG_LOAD fn;
METAMOD_PLUGIN *pl;
int ret;
if (!(g_hCore=openlib(path)))
{
#if defined __linux__ || defined __APPLE__
UTIL_Format(s_FailPlugin.error_buffer,
sizeof(s_FailPlugin.error_buffer),
"%s",
dlerror());
#else
DWORD err = GetLastError();
if (FormatMessageA(
FORMAT_MESSAGE_FROM_SYSTEM|FORMAT_MESSAGE_IGNORE_INSERTS,
NULL,
err,
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT),
s_FailPlugin.error_buffer,
sizeof(s_FailPlugin.error_buffer),
NULL)
== 0)
{
UTIL_Format(s_FailPlugin.error_buffer,
sizeof(s_FailPlugin.error_buffer),
"unknown error %x",
err);
}
#endif
s_FailPlugin.fail_version = fail_api;
return (METAMOD_PLUGIN *)&s_FailPlugin;
}
if (!(fn=(METAMOD_FN_ORIG_LOAD)findsym(g_hCore, "CreateInterface")))
{
goto error;
}
pl = (METAMOD_PLUGIN *)fn(METAMOD_PLAPI_NAME, &ret);
if (!pl)
{
goto error;
}
return pl;
error:
closelib(g_hCore);
g_hCore = NULL;
return NULL;
}
DLL_EXPORT METAMOD_PLUGIN *CreateInterface_MMS(const MetamodVersionInfo *mvi, const MetamodLoaderInfo *mli)
{
const char *filename;
load_attempted = true;
if (mvi->api_major > METAMOD_API_MAJOR)
{
return NULL;
}
switch (mvi->source_engine)
{
case SOURCE_ENGINE_ORIGINAL:
case SOURCE_ENGINE_EPISODEONE:
{
filename = FILENAME_1_6_EP1;
break;
}
case SOURCE_ENGINE_ORANGEBOX:
{
filename = FILENAME_1_6_EP2;
break;
}
case SOURCE_ENGINE_LEFT4DEAD:
{
filename = FILENAME_1_6_L4D;
break;
}
case SOURCE_ENGINE_DARKMESSIAH:
{
filename = FILENAME_1_6_DARKM;
break;
}
case SOURCE_ENGINE_LEFT4DEAD2:
{
const char *gamedir = mvi->GetGameDir();
if (strcmp(gamedir, "nucleardawn") == 0)
{
filename = FILENAME_1_6_ND;
}
else
{
filename = FILENAME_1_6_L4D2;
}
break;
}
case SOURCE_ENGINE_NUCLEARDAWN:
{
filename = FILENAME_1_6_ND;
break;
}
case SOURCE_ENGINE_CONTAGION:
{
filename = FILENAME_1_6_CONTAGION;
break;
}
case SOURCE_ENGINE_ALIENSWARM:
{
filename = FILENAME_1_6_SWARM;
break;
}
case SOURCE_ENGINE_BLOODYGOODTIME:
{
filename = FILENAME_1_6_BGT;
break;
}
case SOURCE_ENGINE_EYE:
{
filename = FILENAME_1_6_EYE;
break;
}
case SOURCE_ENGINE_PORTAL2:
{
filename = FILENAME_1_6_PORTAL2;
break;
}
case SOURCE_ENGINE_CSGO:
{
filename = FILENAME_1_6_CSGO;
break;
}
case SOURCE_ENGINE_CSS:
{
filename = FILENAME_1_6_CSS;
break;
}
case SOURCE_ENGINE_HL2DM:
{
filename = FILENAME_1_6_HL2DM;
break;
}
case SOURCE_ENGINE_DODS:
{
filename = FILENAME_1_6_DODS;
break;
}
case SOURCE_ENGINE_SDK2013:
{
filename = FILENAME_1_6_SDK2013;
break;
}
case SOURCE_ENGINE_BMS:
{
filename = FILENAME_1_6_BMS;
break;
}
case SOURCE_ENGINE_TF2:
{
filename = FILENAME_1_6_TF2;
break;
}
case SOURCE_ENGINE_ORANGEBOXVALVE_DEPRECATED:
{
const char *gamedir = mvi->GetGameDir();
if (strcmp(gamedir, "tf") == 0)
{
filename = FILENAME_1_6_TF2;
}
else if (strcmp(gamedir, "dod") == 0)
{
filename = FILENAME_1_6_DODS;
}
else if (strcmp(gamedir, "hl2mp") == 0)
{
filename = FILENAME_1_6_HL2DM;
}
else
{
return NULL;
}
break;
}
case SOURCE_ENGINE_BLADE:
{
filename = FILENAME_1_6_BLADE;
break;
}
case SOURCE_ENGINE_INSURGENCY:
{
filename = FILENAME_1_6_INSURGENCY;
break;
}
case SOURCE_ENGINE_DOI:
{
filename = FILENAME_1_6_DOI;
break;
}
default:
{
return NULL;
}
}
char abspath[256];
UTIL_Format(abspath, sizeof(abspath), "%s" PATH_SEP_CHAR "%s", mli->pl_path, filename);
return _GetPluginPtr(abspath, METAMOD_FAIL_API_V2);
}
DLL_EXPORT void UnloadInterface_MMS()
{
if (g_hCore)
{
closelib(g_hCore);
g_hCore = NULL;
}
}
#if defined _MSC_VER
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fdwReason, LPVOID lpReserved)
{
if (fdwReason == DLL_PROCESS_DETACH)
{
UnloadInterface_MMS();
}
return TRUE;
}
#else
__attribute__((destructor)) static void gcc_fini()
{
UnloadInterface_MMS();
}
#endif
/* Overload a few things to prevent libstdc++ linking */
#if defined __linux__ || defined __APPLE__
extern "C" void __cxa_pure_virtual(void)
{
}
void *operator new(size_t size)
{
return malloc(size);
}
void *operator new[](size_t size)
{
return malloc(size);
}
void operator delete(void *ptr)
{
free(ptr);
}
void operator delete[](void * ptr)
{
free(ptr);
}
#endif