Définitions des structures et constantes
La routine d'assistance par défaut fait appel à plusieurs structures pour communiquer avec les fonctions de raccordement, ainsi que pendant toute exception. Les valeurs de notification et de défaillance, les structures d'informations et le type de fonction pointeur vers raccordement passés aux raccordements sont fournis ci-dessous :
//
// Delay load import hook notifications
//
enum {
dliStartProcessing, // used to bypass or note helper only
dliNotePreLoadLibrary, // called just before LoadLibrary, can
// override w/ new HMODULE return val
dliNotePreGetProcAddress, // called just before GetProcAddress, can
// override w/ new FARPROC return value
dliFailLoadLib, // failed to load library, fix it by
// returning a valid HMODULE
dliFailGetProc, // failed to get proc address, fix it by
// returning a valid FARPROC
dliNoteEndProcessing, // called after all processing is done, no
// bypass possible at this point except
// by longjmp()/throw()/RaiseException.
};
typedef struct DelayLoadProc {
BOOL fImportByName;
union {
LPCSTR szProcName;
DWORD dwOrdinal;
};
} DelayLoadProc;
typedef struct DelayLoadInfo {
DWORD cb; // size of structure
PCImgDelayDescr pidd; // raw form of data (everything is there)
FARPROC * ppfn; // points to address of function to load
LPCSTR szDll; // name of dll
DelayLoadProc dlp; // name or ordinal of procedure
HMODULE hmodCur; // the hInstance of the library we have loaded
FARPROC pfnCur; // the actual function that will be called
DWORD dwLastError;// error received (if an error notification)
} DelayLoadInfo, * PDelayLoadInfo;
typedef FARPROC (WINAPI *PfnDliHook)(
unsigned dliNotify,
PDelayLoadInfo pdli
);
typedef struct ImgDelayDescr {
DWORD grAttrs; // attributes
RVA rvaDLLName; // RVA to dll name
RVA rvaHmod; // RVA of module handle
RVA rvaIAT; // RVA of the IAT
RVA rvaINT; // RVA of the INT
RVA rvaBoundIAT; // RVA of the optional bound IAT
RVA rvaUnloadIAT; // RVA of optional copy of original IAT
DWORD dwTimeStamp; // 0 if not bound,
// O.W. date/time stamp of DLL bound to (Old BIND)
} ImgDelayDescr, * PImgDelayDescr;