root/src/common/plugins.h

// Copyright (c) Athena Dev Teams - Licensed under GNU GPL
// For more information, see LICENCE in the main folder

#ifndef _PLUGINS_H_
#define _PLUGINS_H_

#ifndef _CBASETYPES_H_
#include "../common/cbasetypes.h"
#endif

#include "../common/plugin.h"

////// Dynamic Link Library functions ///////////////

#ifdef WIN32

        #define WIN32_LEAN_AND_MEAN
        #include <windows.h>
        #define DLL_OPEN(x)             LoadLibrary(x)
        #define DLL_SYM(x,y)    GetProcAddress(x,y)
        #define DLL_CLOSE(x)    FreeLibrary(x)
        char *DLL_ERROR(void);

        #define DLL_EXT                 ".dll"
        #define DLL                             HINSTANCE

#else

        #include <dlfcn.h>
        #define DLL_OPEN(x)             dlopen(x,RTLD_NOW)
        #define DLL_SYM(x,y)    dlsym(x,y)
        #define DLL_CLOSE(x)    dlclose(x)
        #define DLL_ERROR               dlerror

        #ifdef CYGWIN
                #define DLL_EXT         ".dll"
        #else
                #define DLL_EXT         ".so"
        #endif
        #define DLL                             void *

        #include <string.h> // size_t

#endif

////// Plugin Definitions ///////////////////

typedef struct _Plugin {
        DLL dll;
        char state;
        char* filename;
        struct _Plugin_Info* info;
        struct _Plugin* next;   
} Plugin;

/////////////////////////////////////////////

int register_plugin_func(char* name);
int register_plugin_event(Plugin_Event_Func* func, char* name);
int plugin_event_trigger(char* name);

int export_symbol(void* var, size_t offset);
#define EXPORT_SYMBOL(s,o) export_symbol((void*)(s),(o));
#define EXPORT_SYMBOL2(s) EXPORT_SYMBOL((s), -1);

Plugin* plugin_open(const char* filename);
void plugin_load(const char* filename);
void plugin_unload(Plugin* plugin);
void plugins_init(void);
void plugins_final(void);

#endif /* _PLUGINS_H_ */