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// Copyright (c) Hercules Dev Team, licensed under GNU GPL.
// See the LICENSE file
#ifndef COMMON_HPM_H
#define COMMON_HPM_H
#ifndef HERCULES_CORE
#error You should never include HPM.h from a plugin.
#endif
#include "common/hercules.h"
#include "common/db.h"
#include "common/HPMi.h"
#ifdef WIN32
#ifndef WIN32_LEAN_AND_MEAN
#define WIN32_LEAN_AND_MEAN
#endif
#include <windows.h>
#define plugin_open(x) LoadLibraryA(x)
#define plugin_import(x,y,z) (z)GetProcAddress((x),(y))
#define plugin_close(x) FreeLibrary(x)
#define plugin_geterror(buf) (FormatMessage(FORMAT_MESSAGE_FROM_SYSTEM, NULL, GetLastError(), 0, buf, sizeof(buf), NULL) ? buf : "Unknown error")
#define DLL_EXT ".dll"
#define DLL HINSTANCE
#else // ! WIN32
#include <dlfcn.h>
#ifdef RTLD_DEEPBIND // Certain linux distributions require this, but it's not available everywhere
#define plugin_open(x) dlopen((x),RTLD_NOW|RTLD_DEEPBIND)
#else // ! RTLD_DEEPBIND
#define plugin_open(x) dlopen((x),RTLD_NOW)
#endif // RTLD_DEEPBIND
#define plugin_import(x,y,z) (z)dlsym((x),(y))
#define plugin_close(x) dlclose(x)
#define plugin_geterror(buf) ((void)buf, dlerror())
#if defined CYGWIN
#define DLL_EXT ".dll"
#elif defined __DARWIN__
#define DLL_EXT ".dylib"
#else
#define DLL_EXT ".so"
#endif
#define DLL void *
#include <string.h> // size_t
#endif // WIN32
struct hplugin {
DLL dll;
unsigned int idx;
char *filename;
struct hplugin_info *info;
struct HPMi_interface *hpi;
};
/**
* Symbols shared between core and plugins.
*/
struct hpm_symbol {
const char *name; ///< The symbol name
void *ptr; ///< The symbol value
};
struct HPluginData {
unsigned int pluginID;
unsigned int type;
struct {
unsigned int free : 1;
} flag;
void *data;
};
struct HPluginPacket {
unsigned int pluginID;
unsigned short cmd;
short len;
void (*receive) (int fd);
};
struct HPMFileNameCache {
const char *addr;
char *name;
};
struct HPDataOperationStorage {
void **HPDataSRCPtr;
unsigned int *hdatac;
};
/* */
struct HPConfListenStorage {
unsigned int pluginID;
char key[HPM_ADDCONF_LENGTH];
void (*func) (const char *val);
};
/* Hercules Plugin Manager Interface */
struct HPM_interface {
/* vars */
unsigned int version[2];
bool off;
bool hooking;
/* hooking */
bool force_return;
/* data */
VECTOR_DECL(struct hplugin *) plugins;
VECTOR_DECL(struct hpm_symbol *) symbols;
/* packet hooking points */
VECTOR_DECL(struct HPluginPacket) packets[hpPHP_MAX];
/* plugin file ptr caching */
struct {
// This doesn't use a VECTOR because it needs to exist after the memory manager goes down.
int count;
struct HPMFileNameCache *data;
} filenames;
/* config listen */
VECTOR_DECL(struct HPConfListenStorage) config_listeners[HPCT_MAX];
/** Plugins requested through the command line */
VECTOR_DECL(char *) cmdline_load_plugins;
/* funcs */
void (*init) (void);
void (*final) (void);
struct hplugin * (*create) (void);
struct hplugin * (*load) (const char* filename);
void (*unload) (struct hplugin* plugin);
bool (*exists) (const char *filename);
bool (*iscompatible) (char* version);
void (*event) (enum hp_event_types type);
void *(*import_symbol) (char *name, unsigned int pID);
void (*share) (void *value, const char *name);
void (*config_read) (void);
char *(*pid2name) (unsigned int pid);
unsigned char (*parse_packets) (int fd, enum HPluginPacketHookingPoints point);
void (*load_sub) (struct hplugin *plugin);
bool (*addhook_sub) (enum HPluginHookType type, const char *target, void *hook, unsigned int pID);
void (*grabHPData) (struct HPDataOperationStorage *ret, enum HPluginDataTypes type, void *ptr);
/* for server-specific HPData e.g. map_session_data */
bool (*grabHPDataSub) (struct HPDataOperationStorage *ret, enum HPluginDataTypes type, void *ptr);
/* for custom config parsing */
bool (*parseConf) (const char *w1, const char *w2, enum HPluginConfType point);
/* validates plugin data */
bool (*DataCheck) (struct s_HPMDataCheck *src, unsigned int size, int version, char *name);
void (*datacheck_init) (const struct s_HPMDataCheck *src, unsigned int length, int version);
void (*datacheck_final) (void);
};
CMDLINEARG(loadplugin);
extern struct HPM_interface *HPM;
void hpm_defaults(void);
#endif /* COMMON_HPM_H */
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