[claudiuhks]

I want to make this for Linux, if possible in this mode. Otherwise, other type of building would be greatly appreciated.

PHP Code:

// Big thanks to jim_yang and Meta Mod 1.19 author(s)
// https://forums.alliedmods.net/member.php?u=19661

#define WIN !defined( __linux__ )

#if WIN
    #include < extdll.h >
#else
    #include "extdll.h"
#endif

#if WIN
    #define DLL_EXP extern "C" __declspec ( dllexport )
#else
    #define DLL_EXP /* */
#endif

#if WIN
    #define LINK_ENT( EntityClassName ) DLL_EXP void EntityClassName( entvars_t * pVars ) { ENTITY_FN Entity = ( ENTITY_FN ) GetProcAddress( hGameDll, #EntityClassName ); ( * Entity ) ( pVars ); }
#else
    /* ????????????? */
#endif

#if WIN
    HMODULE hGameDll;
#else
    /* ????????????? */
#endif

enginefuncs_t g_engfuncs;
globalvars_t * gpGlobals;
DLL_FUNCTIONS g_dllfuncs;

#if WIN
    typedef void ( WINAPI * ENGINE_API_FN ) ( enginefuncs_t *, globalvars_t * );
#else
    typedef void ( * ENGINE_API_FN ) ( enginefuncs_t *, globalvars_t * );
#endif

typedef int ( * ENTITY_API_FN ) ( DLL_FUNCTIONS *, int );
typedef void ( * ENTITY_FN ) ( entvars_t * );

#if WIN
    DLL_EXP void WINAPI GiveFnptrsToDll( enginefuncs_t * pFuncs, globalvars_t * pGlobals ) {
#else
    DLL_EXP void GiveFnptrsToDll( enginefuncs_t * pFuncs, globalvars_t * pGlobals ) {
#endif
    memcpy( &g_engfuncs, pFuncs, sizeof( g_engfuncs ) );
    gpGlobals = pGlobals;
#if WIN
    hGameDll = LoadLibrary( L"cstrike\\dlls\\mp.dll" );
    ENGINE_API_FN Call = ( ENGINE_API_FN ) GetProcAddress( hGameDll, "GiveFnptrsToDll" );
    Call( pFuncs, pGlobals );
#else
    /* ????????????? */
#endif
    printf( "Loading \"Hattrick Main Admin Plugin\" by Hattrick\n" );
}

DLL_EXP int GetEntityAPI( DLL_FUNCTIONS * pFuncs, int Vers ) {
#if WIN
    ENTITY_API_FN Call = ( ENTITY_API_FN ) GetProcAddress( hGameDll, "GetEntityAPI" );
    Call( &g_dllfuncs, Vers );
    Call( pFuncs, Vers );
#else
    /* ????????????? */
#endif
    return 1;
}

LINK_ENT( AngleIMatrix );
LINK_ENT( AngleMatrix );
LINK_ENT( BALLS_airball );
// and so on... 


[Arkshine]

For LoadLibrary, see dlopen.
For GetProcAddress, see, dlsym.

[claudiuhks]

I prepared the next code for Linux but it doesn't load on Linux due to the next error:

Couldn't get GiveFnptrsToDll from ../dlls/hmap_i386.so Couldn't get GetEntityAPI from ../dlls/hmap_i386.so

Part of my code is:

PHP Code:

#include "extdll.h"

#if WINDOWS
#pragma comment ( linker, "/EXPORT:GiveFnptrsToDll=_GiveFnptrsToDll@8,@1" )
#pragma comment ( linker, "/SECTION:.data,RW" )
#endif

typedef int ( * ENTITY_API_FN ) ( DLL_FUNCTIONS *, int );

#if WINDOWS
HMODULE g_Module;

typedef void ( WINAPI * ENGINE_API_FN ) ( enginefuncs_t *, globalvars_t * );
#else
void * g_pModule = NULL;

typedef void ( * ENGINE_API_FN ) ( enginefuncs_t *, globalvars_t * );
#endif

#if WINDOWS
extern "C" __declspec ( dllexport ) void WINAPI GiveFnptrsToDll( enginefuncs_t * pEngine_Functions, globalvars_t * pGlobal_Variables ) {
#else
void GiveFnptrsToDll( enginefuncs_t * pEngine_Functions, globalvars_t * pGlobal_Variables ) {
#endif

#if WINDOWS
    g_Module = LoadLibrary( L"cstrike\\dlls\\mp.dll" );

    ENGINE_API_FN Address = ( ENGINE_API_FN ) GetProcAddress( g_Module, "GiveFnptrsToDll" );
#else
    g_pModule = dlopen( "cstrike/dlls/cs_i386.so", RTLD_NOW );

    ENGINE_API_FN Address = ( ENGINE_API_FN ) dlsym( g_pModule, "GiveFnptrsToDll" );
#endif

    Address( pEngine_Functions, pGlobal_Variables );
}

#if WINDOWS
extern "C" __declspec ( dllexport ) int GetEntityAPI( DLL_FUNCTIONS * pDll_Functions, int ) {
    ENTITY_API_FN Address = ( ENTITY_API_FN ) GetProcAddress( g_Module, "GetEntityAPI" );
#else
int GetEntityAPI( DLL_FUNCTIONS * pDll_Functions, int ) {
    ENTITY_API_FN Address = ( ENTITY_API_FN ) dlsym( g_pModule, "GetEntityAPI" );
#endif

    Address( pDll_Functions, INTERFACE_VERSION );

    return 1;
} 


Notes:

It doesn't work on Linux but for Windows it works properly.
I think I have to evidence GiveFnptrsToDll for Linux as the first function that should be loaded, but I don't know how.
For Windows, jim_yang and Meta Mod source code helped.

Any help could be greatly appreciated.

[Arkshine]

I don't know much and it may an useless comment, but should not you add extern "C" for linux too ? It would make sense to add it.

[claudiuhks]

Originally Posted by Arkshine I don't know much and it may an useless comment, but should not you add extern "C" for linux too ? It would make sense to add it.

Impressive.

Thanks for your quickly answer, it works perfectly now!

[Arkshine]

:. It's mainly because on the project I'm working I had to export something, and when I've read "Couldn't get", it would mean only the symbol has not been found in your lib ; something you see right away in the code.

Will you post your the whole code once finished or you just need that above ? Never tried and it kind of interesting.

[claudiuhks]

Originally Posted by Arkshine Will you post your the whole code once finished or you just need that above ? Never tried and it kind of interesting.

Of course I will.
Once I'll finish I'll attach the code here.

By the way, I'm not afraid to publish free coded things that others can't use on servers that run plugins that hack the game to allow users without Steam.

[claudiuhks]

You may download it from the link listed below.

Click here.

It doesn't work with de_airstrip, as I tested. As I think, an entity required couldn't be found in Edict.cpp.

As a note, Dlfcn.H is included in Extdll.H.

Any help would be greatly appreciated.

Does anyone know how to retrieve Message Index on RegUserMsg_Post?

For hooking an Engine function, you may check this example.

PHP Code:

enginefuncs_t g_engfuncs;

void MessageBegin( int Destination, int Type, const float * pOrigin, edict_t * pEdict ) {
  // Pre execution state.
  // If you want to block the function, the call, you have to not call the function listed below.
  g_engfuncs.pfnMessageBegin( Destination, Type, pOrigin, pEdict );
  // Post execution state.
}

#if WINDOWS
extern "C" __declspec ( dllexport ) void WINAPI GiveFnptrsToDll( enginefuncs_t * pEngine_Functions, globalvars_t * ) {
#else
extern "C" void GiveFnptrsToDll( enginefuncs_t * pEngine_Functions, globalvars_t * ) {
#endif
  memcpy( &g_engfuncs, pEngine_Functions, sizeof( enginefuncs_t ) );
  pEngine_Functions -> pfnMessageBegin = MessageBegin;
} 


[Arkshine]

Does anyone know how to retrieve Message Index on RegUserMsg_Post?

Call the original function and get it's returned value ?

[claudiuhks]

Originally Posted by Arkshine Call the original function and get it's returned value ?

It works like a charm! As I tested with printf.

Now only the problem with de_airstrip should be solved so the like "Meta Mod" plugin type will be completely done.