addons.h

/* $Id: addons.h 1 2006-01-13 22:47:50Z MagicalTux $
 *
 * Copied from UnrealIRCD and modified (a lot) because UnrealIRCd has
 * a really nice modules support :p
 * TODO: use APR DSO instead of dlopen/LoadLibrary
 */
#ifndef OA_MODULES_H
#define OA_MODULES_H

#ifdef _WIN32
#include <windows.h>
#else
#include <dlfcn.h>
#endif

#define MOD_VERSION     "1.0"

#ifdef _WIN32
 #define DLLFUNC        _declspec(dllexport)
 #define mod_dlopen(x,y) LoadLibrary(x)
 #define mod_dlclose FreeLibrary
 #define mod_dlsym(x,y,z) z = (void *)GetProcAddress(x,y)
 #define mod_dlerror our_dlerror
#else
 #define mod_dlopen dlopen
 #define mod_dlclose dlclose
 #define mod_dlsym(x,y,z) z = dlsym(x,y)
 #define mod_dlerror dlerror
 #define DLLFUNC
#endif

#ifndef RTLD_NOW
#define RTLD_NOW 0
#endif

/* used for various temporary usages */
void *addon_tmp_pointer;
/* used to contain the common calls table */
void *call_table;
/* used to contain the local calls table */
void *local_table;

typedef struct _Module Module;

/*
 * Module header that every module must include, with the name of
 * mod_header
*/

typedef struct _ModuleHeader {
        char *name;
        char *version;
        char *description;
        char *modversion;
        char addon_target;
} ModuleHeader;

typedef struct {
        int size;
        int module_load;
        Module *handle;
} ModuleInfo;


struct _Module {
        struct _Module *prev, *next;
        ModuleHeader *header; /* The module's header */
        char *filename; /* filename of the module file */
#ifdef _WIN32
        HMODULE dll;    /* Return value of LoadLibrary */
#else
        void *dll;      /* Return value of dlopen */
#endif
        int state; /* state of the addon (loaded or not, etc...) */
};

/* Module function return values */
#define MOD_SUCCESS 0
#define MOD_FAILED -1

/* Addons states */
#define MOD_STATE_EMPTY 0 /* No addon here, empty space */
#define MOD_STATE_DISABLED 1 /* addon currently disabled */
#define MOD_STATE_ENABLED 2 /* addon currently enabled */

#define ADDONS_ALL 0
#define ADDONS_LOGIN 1
#define ADDONS_CHAR 2
#define ADDONS_MAP 3

#ifdef DYNAMIC_LINKING
 #define MOD_HEADER(name) Mod_Header
 #define MOD_TEST(name) Mod_Test
 #define MOD_INIT(name) Mod_Init
 #define MOD_LOAD(name) Mod_Load
 #define MOD_UNLOAD(name) Mod_Unload
#else
 #define MOD_HEADER(name) name##_Header
 #define MOD_TEST(name) name##_Test
 #define MOD_INIT(name) name##_Init
 #define MOD_LOAD(name) name##_Load
 #define MOD_UNLOAD(name) name##_Unload
#endif

int addons_enable_all(void);
int addons_load(char *, char);
int addons_unload(struct _Module *, int);
void addons_unload_all(void);

#endif // MODULES_H

---