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/*****************************************************************************\
FILE: dllload.cpp
DESCRIPTION: Delay load functions that we want to use when they are available.
BryanSt (Bryan Starbuck) - Created Copyright (c) 1998-2000 Microsoft Corporation\*****************************************************************************/
#include "priv.h"
#include <pstore.h>
#include <wininet.h>
#pragma warning(disable:4229) // No warnings when modifiers used on data
// Delay loading mechanism. This allows you to write code as if you are
// calling implicitly linked APIs, and yet have these APIs really be
// explicitly linked. You can reduce the initial number of DLLs that
// are loaded (load on demand) using this technique.
//
// Use the following macros to indicate which APIs/DLLs are delay-linked
// and -loaded.
//
// DELAY_LOAD
// DELAY_LOAD_HRESULT
// DELAY_LOAD_SAFEARRAY
// DELAY_LOAD_UINT
// DELAY_LOAD_INT
// DELAY_LOAD_VOID
//
// Use these macros for APIs that are exported by ordinal only.
//
// DELAY_LOAD_ORD
// DELAY_LOAD_ORD_VOID
//
// Use these macros for APIs that only exist on the integrated-shell
// installations (i.e., a new shell32 is on the system).
//
// DELAY_LOAD_SHELL
// DELAY_LOAD_SHELL_HRESULT
// DELAY_LOAD_SHELL_VOID
//
//
/**********************************************************************/
void _GetProcFromDLL(HINSTANCE* phinst, LPCSTR pszDLL, FARPROC* ppfn, LPCSTR pszProc){#ifdef DEBUG
CHAR szProcD[MAX_PATH]; if (HIWORD(pszProc)) { lstrcpynA(szProcD, pszProc, ARRAYSIZE(szProcD)); } else { wnsprintfA(szProcD, ARRAYSIZE(szProcD), "(ordinal %d)", LOWORD(pszProc)); }#endif // DEBUG
// If it's already loaded, return.
if (*ppfn) { return; }
if (*phinst == NULL) {#ifdef DEBUG
TraceMsg(TF_FTP_DLLLOADING, "DLLLOAD: Loading %hs for the first time for %hs", pszDLL, szProcD); /*
if (g_dwBreakFlags & TF_FTP_DLLLOAD_BREAK) { DebugBreak(); }*/#endif // DEBUG
*phinst = LoadLibraryA(pszDLL); if (*phinst == NULL) { return; } }
#ifdef DEBUG
TraceMsg(TF_FTP_DLLLOADING, "DLLLOAD: GetProc'ing %hs from %hs for the first time", pszDLL, szProcD);#endif // DEBUG
*ppfn = GetProcAddress(*phinst, pszProc);}
/*----------------------------------------------------------
Purpose: Performs a loadlibrary on the DLL only if the machine has the integrated shell installation.
*/void _SHGetProcFromDLL(HINSTANCE* phinst, LPCSTR pszDLL, FARPROC* ppfn, LPCSTR pszProc){ _GetProcFromDLL(phinst, pszDLL, ppfn, pszProc);}
#define DELAY_LOAD_MAP(_hinst, _dll, _ret, _fnpriv, _fn, _args, _nargs, _err) \
_ret __stdcall _fnpriv _args \{ \ static _ret (* __stdcall _pfn##_fn) _args = NULL; \ _GetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, #_fn); \ if (_pfn##_fn) \ return _pfn##_fn _nargs; \ return (_ret)_err; \}
#define DELAY_MAP_HRESULT(_hinst, _dll, _fnpriv, _fn, _args, _nargs) DELAY_LOAD_MAP(_hinst, _dll, HRESULT, _fnpriv, _fn, _args, _nargs, E_FAIL)
#define DELAY_MAP_DWORD(_hinst, _dll, _fnpriv, _fn, _args, _nargs) DELAY_LOAD_MAP(_hinst, _dll, DWORD, _fnpriv, _fn, _args, _nargs, 0)
#define DELAY_MAP_BOOL(_hinst, _dll, _fnpriv, _fn, _args, _nargs) DELAY_LOAD_MAP(_hinst, _dll, BOOL, _fnpriv, _fn, _args, _nargs, 0)
#define DELAY_LOAD_ERR(_hinst, _dll, _ret, _fn, _args, _nargs, _err) DELAY_LOAD_MAP(_hinst, _dll, _ret, _fn, _fn, _args, _nargs, _err)
#define DELAY_LOAD(_hinst, _dll, _ret, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, _ret, _fn, _args, _nargs, 0)
#define DELAY_LOAD_HRESULT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, HRESULT, _fn, _args, _nargs, E_FAIL)
#define DELAY_LOAD_SAFEARRAY(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, SAFEARRAY *, _fn, _args, _nargs, NULL)
#define DELAY_LOAD_DWORD(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, DWORD, _fn, _args, _nargs, 0)
#define DELAY_LOAD_BOOL(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, BOOL, _fn, _args, _nargs, 0)
#define DELAY_LOAD_UINT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, UINT, _fn, _args, _nargs, 0)
#define DELAY_LOAD_INT(_hinst, _dll, _fn, _args, _nargs) DELAY_LOAD_ERR(_hinst, _dll, INT, _fn, _args, _nargs, 0)
#define DELAY_LOAD_VOID(_hinst, _dll, _fn, _args, _nargs) \
void __stdcall _fn _args \{ \ static void (* __stdcall _pfn##_fn) _args = NULL; \ _GetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, #_fn); \ if (_pfn##_fn) \ _pfn##_fn _nargs; \ return; \}
//
// For private entrypoints exported by ordinal.
//
#define DELAY_LOAD_ORD_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, _err) \
_ret __stdcall _fn _args \{ \ static _ret (* __stdcall _pfn##_fn) _args = NULL; \ _GetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, (LPCSTR)_ord); \ if (_pfn##_fn) \ return _pfn##_fn _nargs; \ return (_ret)_err; \} #define DELAY_LOAD_ORD(_hinst, _dll, _ret, _fn, _ord, _args, _nargs) DELAY_LOAD_ORD_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, 0)
#define DELAY_LOAD_ORD_HRESULT(_hinst, _dll, _fn, _ord, _args, _nargs) DELAY_LOAD_ORD(_hinst, _dll, HRESULT, _fn, _ord, _args, _nargs)
#define DELAY_LOAD_ORD_VOID(_hinst, _dll, _fn, _ord, _args, _nargs) \
void __stdcall _fn _args \{ \ static void (* __stdcall _pfn##_fn) _args = NULL; \ _GetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, (LPCSTR)_ord); \ if (_pfn##_fn) \ _pfn##_fn _nargs; \ return; \}
//
// Private exports by ordinal for integrated-shell installs
//
#define DELAY_LOAD_SHELL_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, _err) \
_ret __stdcall _fn _args \{ \ static _ret (* __stdcall _pfn##_fn) _args = NULL; \ _SHGetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, (LPCSTR)_ord); \ if (_pfn##_fn) \ return _pfn##_fn _nargs; \ return (_ret)_err; \} #define DELAY_LOAD_SHELL(_hinst, _dll, _ret, _fn, _ord, _args, _nargs) DELAY_LOAD_SHELL_ERR(_hinst, _dll, _ret, _fn, _ord, _args, _nargs, 0)
#define DELAY_LOAD_SHELL_HRESULT(_hinst, _dll, _fn, _ord, _args, _nargs) DELAY_LOAD_SHELL_ERR(_hinst, _dll, HRESULT, _fn, _ord, _args, _nargs, E_FAIL)
#define DELAY_LOAD_SHELL_VOID(_hinst, _dll, _fn, _ord, _args, _nargs) \
void __stdcall _fn _args \{ \ static void (* __stdcall _pfn##_fn) _args = NULL; \ _SHGetProcFromDLL(&_hinst, #_dll, (FARPROC*)&_pfn##_fn, (LPCSTR)_ord); \ if (_pfn##_fn) \ _pfn##_fn _nargs; \ return; \}
/**********************************************************************//**********************************************************************/
// --------- MLANG.DLL ---------------
HINSTANCE g_hinstMLANG = NULL;
DELAY_LOAD_HRESULT(g_hinstMLANG, MLANG.DLL, ConvertINetMultiByteToUnicode, (LPDWORD lpdwMode, DWORD dwEncoding, LPCSTR lpSrcStr, LPINT lpnMultiCharCount, LPWSTR lpDstStr, LPINT lpnWideCharCount), (lpdwMode, dwEncoding, lpSrcStr, lpnMultiCharCount, lpDstStr, lpnWideCharCount));
DELAY_LOAD_HRESULT(g_hinstMLANG, MLANG.DLL, ConvertINetUnicodeToMultiByte, (LPDWORD lpdwMode, DWORD dwEncoding, LPCWSTR lpSrcStr, LPINT lpnWideCharCount, LPSTR lpDstStr, LPINT lpnMultiCharCount), (lpdwMode, dwEncoding, lpSrcStr, lpnWideCharCount, lpDstStr, lpnMultiCharCount));
DELAY_LOAD_HRESULT(g_hinstMLANG, MLANG.DLL, LcidToRfc1766W, (LCID Locale, LPWSTR pszRfc1766, int nChar), (Locale, pszRfc1766, nChar));
// --------- MSHTML.DLL ---------------
HINSTANCE g_hinstMSHTML = NULL;
DELAY_LOAD_HRESULT(g_hinstMSHTML, MSHTML.DLL, ShowHTMLDialog, (HWND hwnd, IMoniker * pmk, VARIANT * pvarArgIn, LPWSTR pchOptions, VARIANT * pvarArgOut), (hwnd, pmk, pvarArgIn, pchOptions, pvarArgOut));
// --------- CRYPT32.DLL ---------------
HINSTANCE g_hinstCRYPT32 = NULL;
DELAY_MAP_BOOL(g_hinstCRYPT32, CRYPT32.DLL, _CryptProtectData, CryptProtectData, (DATA_BLOB *pDataIn, LPCWSTR pszDataDescr, DATA_BLOB * pOptionalEntropy, PVOID pvReserved, CRYPTPROTECT_PROMPTSTRUCT *pPromptStruct, DWORD dwFlags, DATA_BLOB *pDataOut), (pDataIn, pszDataDescr, pOptionalEntropy, pvReserved, pPromptStruct, dwFlags, pDataOut));
DELAY_MAP_BOOL(g_hinstCRYPT32, CRYPT32.DLL, _CryptUnprotectData, CryptUnprotectData, (DATA_BLOB *pDataIn, LPWSTR *ppszDataDescr, DATA_BLOB * pOptionalEntropy, PVOID pvReserved, CRYPTPROTECT_PROMPTSTRUCT *pPromptStruct, DWORD dwFlags, DATA_BLOB *pDataOut), (pDataIn, ppszDataDescr, pOptionalEntropy, pvReserved, pPromptStruct, dwFlags, pDataOut));
// --------- SHELL32.DLL ---------------
HINSTANCE g_hinstSHELL32 = NULL;
DELAY_LOAD_ORD_HRESULT(g_hinstSHELL32, SHELL32.DLL, _SHCreateShellFolderView, SHCreateShellFolderViewORD, (const SFV_CREATE* pcsfv, LPSHELLVIEW FAR* ppsv), (pcsfv, ppsv));
DELAY_MAP_HRESULT(g_hinstSHELL32, SHELL32.DLL, _SHPathPrepareForWriteW, SHPathPrepareForWriteW, (HWND hwnd, IUnknown *punkEnableModless, LPCWSTR pwzPath, DWORD dwFlags), (hwnd, punkEnableModless, pwzPath, dwFlags));
#pragma warning(default:4229)
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