481 lines
11 KiB
C++
481 lines
11 KiB
C++
|
/*
|
||
|
|
* FDIDLL.C -- FDI interface using CABINET.DLL
|
||
|
|
*
|
||
|
|
* Copyright (C) Microsoft Corporation 1997
|
||
|
|
* All Rights Reserved.
|
||
|
|
*
|
||
|
|
* Overview:
|
||
|
|
* This code is a wrapper which provides access to the actual FDI code
|
||
|
|
* in CABINET.DLL. CABINET.DLL dynamically loads/unloads as needed.
|
||
|
|
*/
|
||
|
|
|
||
|
|
#include "pch.hpp"
|
||
|
|
#include <io.h>
|
||
|
|
#include <fcntl.h>
|
||
|
|
#include <sys/stat.h>
|
||
|
|
#include <appdefs.h>
|
||
|
|
|
||
|
|
#include "fdi.h"
|
||
|
|
|
||
|
|
static HINSTANCE hCabinetDll = NULL; /* DLL module handle */
|
||
|
|
|
||
|
|
/* pointers to the functions in the DLL */
|
||
|
|
typedef HFDI (FAR DIAMONDAPI *PFNFDICREATE)(
|
||
|
|
PFNALLOC pfnalloc,
|
||
|
|
PFNFREE pfnfree,
|
||
|
|
PFNOPEN pfnopen,
|
||
|
|
PFNREAD pfnread,
|
||
|
|
PFNWRITE pfnwrite,
|
||
|
|
PFNCLOSE pfnclose,
|
||
|
|
PFNSEEK pfnseek,
|
||
|
|
int cpuType,
|
||
|
|
PERF perf);
|
||
|
|
|
||
|
|
static PFNFDICREATE pfnFDICreate = NULL;
|
||
|
|
|
||
|
|
typedef BOOL (FAR DIAMONDAPI *PFNFDIIsCabinet)(
|
||
|
|
HFDI hfdi,
|
||
|
|
int hf,
|
||
|
|
PFDICABINETINFO pfdici);
|
||
|
|
|
||
|
|
static PFNFDIIsCabinet pfnFDIIsCabinet = NULL;
|
||
|
|
|
||
|
|
typedef BOOL (FAR DIAMONDAPI *PFNFDICopy)(
|
||
|
|
HFDI hfdi,
|
||
|
|
CHAR *pszCabinet,
|
||
|
|
CHAR *pszCabPath,
|
||
|
|
int flags,
|
||
|
|
PFNFDINOTIFY pfnfdin,
|
||
|
|
PFNFDIDECRYPT pfnfdid,
|
||
|
|
void *pvUser);
|
||
|
|
|
||
|
|
static PFNFDICopy pfnFDICopy = NULL;
|
||
|
|
|
||
|
|
typedef BOOL (FAR DIAMONDAPI *PFNFDIDestroy)(
|
||
|
|
HFDI hfdi);
|
||
|
|
|
||
|
|
static PFNFDIDestroy pfnFDIDestroy = NULL;
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FDICreate -- Create an FDI context
|
||
|
|
*
|
||
|
|
* See fdi.h for entry/exit conditions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
HFDI FAR DIAMONDAPI FDICreate(PFNALLOC pfnalloc,
|
||
|
|
PFNFREE pfnfree,
|
||
|
|
PFNOPEN pfnopen,
|
||
|
|
PFNREAD pfnread,
|
||
|
|
PFNWRITE pfnwrite,
|
||
|
|
PFNCLOSE pfnclose,
|
||
|
|
PFNSEEK pfnseek,
|
||
|
|
int cpuType,
|
||
|
|
PERF perf)
|
||
|
|
{
|
||
|
|
HFDI hfdi;
|
||
|
|
|
||
|
|
|
||
|
|
if ( hCabinetDll != NULL )
|
||
|
|
{
|
||
|
|
goto gotEntryPoints;
|
||
|
|
}
|
||
|
|
|
||
|
|
hCabinetDll = LoadLibraryA("CABINET");
|
||
|
|
if (hCabinetDll == NULL)
|
||
|
|
{
|
||
|
|
return(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
pfnFDICreate = (PFNFDICREATE) GetProcAddress(hCabinetDll, "FDICreate");
|
||
|
|
pfnFDICopy = (PFNFDICopy) GetProcAddress(hCabinetDll, "FDICopy");
|
||
|
|
pfnFDIIsCabinet = (PFNFDIIsCabinet) GetProcAddress(hCabinetDll, "FDIIsCabinet");
|
||
|
|
pfnFDIDestroy = (PFNFDIDestroy) GetProcAddress(hCabinetDll, "FDIDestroy");
|
||
|
|
|
||
|
|
if ((pfnFDICreate == NULL) ||
|
||
|
|
(pfnFDICopy == NULL) ||
|
||
|
|
(pfnFDIIsCabinet == NULL) ||
|
||
|
|
(pfnFDIDestroy == NULL))
|
||
|
|
{
|
||
|
|
FreeLibrary(hCabinetDll);
|
||
|
|
hCabinetDll = NULL;
|
||
|
|
return(NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
gotEntryPoints:
|
||
|
|
hfdi = pfnFDICreate(pfnalloc, pfnfree,
|
||
|
|
pfnopen, pfnread,pfnwrite,pfnclose,pfnseek,cpuType,perf);
|
||
|
|
if (hfdi == NULL)
|
||
|
|
{
|
||
|
|
FreeLibrary(hCabinetDll);
|
||
|
|
hCabinetDll = NULL;
|
||
|
|
}
|
||
|
|
|
||
|
|
return(hfdi);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FDIIsCabinet -- Determines if file is a cabinet, returns info if it is
|
||
|
|
*
|
||
|
|
* See fdi.h for entry/exit conditions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
BOOL FAR DIAMONDAPI FDIIsCabinet(HFDI hfdi,
|
||
|
|
int hf,
|
||
|
|
PFDICABINETINFO pfdici)
|
||
|
|
{
|
||
|
|
if (pfnFDIIsCabinet == NULL)
|
||
|
|
{
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return(pfnFDIIsCabinet(hfdi, hf,pfdici));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FDICopy -- extracts files from a cabinet
|
||
|
|
*
|
||
|
|
* See fdi.h for entry/exit conditions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
BOOL FAR DIAMONDAPI FDICopy(HFDI hfdi,
|
||
|
|
CHAR *pszCabinet,
|
||
|
|
CHAR *pszCabPath,
|
||
|
|
int flags,
|
||
|
|
PFNFDINOTIFY pfnfdin,
|
||
|
|
PFNFDIDECRYPT pfnfdid,
|
||
|
|
void *pvUser)
|
||
|
|
{
|
||
|
|
if (pfnFDICopy == NULL)
|
||
|
|
{
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
return(pfnFDICopy(hfdi, pszCabinet,pszCabPath,flags,pfnfdin,pfnfdid,pvUser));
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* FDIDestroy -- Destroy an FDI context
|
||
|
|
*
|
||
|
|
* See fdi.h for entry/exit conditions.
|
||
|
|
*/
|
||
|
|
|
||
|
|
BOOL FAR DIAMONDAPI FDIDestroy(HFDI hfdi)
|
||
|
|
{
|
||
|
|
BOOL rc;
|
||
|
|
|
||
|
|
if (pfnFDIDestroy == NULL)
|
||
|
|
{
|
||
|
|
return(FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
rc = pfnFDIDestroy(hfdi);
|
||
|
|
|
||
|
|
return(rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Memory allocation function
|
||
|
|
*/
|
||
|
|
FNALLOC(mem_alloc)
|
||
|
|
{
|
||
|
|
return new BYTE[cb];
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Memory free function
|
||
|
|
*/
|
||
|
|
FNFREE(mem_free)
|
||
|
|
{
|
||
|
|
delete pv;
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
FNOPEN(file_open)
|
||
|
|
{
|
||
|
|
return _open(pszFile, oflag, pmode);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
FNREAD(file_read)
|
||
|
|
{
|
||
|
|
return _read(hf, pv, cb);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
FNWRITE(file_write)
|
||
|
|
{
|
||
|
|
return _write(hf, pv, cb);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
FNCLOSE(file_close)
|
||
|
|
{
|
||
|
|
return _close(hf);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
FNSEEK(file_seek)
|
||
|
|
{
|
||
|
|
return _lseek(hf, dist, seektype);
|
||
|
|
}
|
||
|
|
|
||
|
|
FNFDINOTIFY(notification_function)
|
||
|
|
{
|
||
|
|
switch (fdint)
|
||
|
|
{
|
||
|
|
case fdintCABINET_INFO: // general information about the cabinet
|
||
|
|
#if 0
|
||
|
|
printf(
|
||
|
|
"fdintCABINET_INFO\n"
|
||
|
|
" next cabinet = %s\n"
|
||
|
|
" next disk = %s\n"
|
||
|
|
" cabinet path = %s\n"
|
||
|
|
" cabinet set ID = %d\n"
|
||
|
|
" cabinet # in set = %d (zero based)\n"
|
||
|
|
"\n",
|
||
|
|
pfdin->psz1,
|
||
|
|
pfdin->psz2,
|
||
|
|
pfdin->psz3,
|
||
|
|
pfdin->setID,
|
||
|
|
pfdin->iCabinet
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
case fdintPARTIAL_FILE: // first file in cabinet is continuation
|
||
|
|
#if 0
|
||
|
|
printf(
|
||
|
|
"fdintPARTIAL_FILE\n"
|
||
|
|
" name of continued file = %s\n"
|
||
|
|
" name of cabinet where file starts = %s\n"
|
||
|
|
" name of disk where file starts = %s\n",
|
||
|
|
pfdin->psz1,
|
||
|
|
pfdin->psz2,
|
||
|
|
pfdin->psz3
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
|
||
|
|
case fdintCOPY_FILE: // file to be copied
|
||
|
|
{
|
||
|
|
int handle;
|
||
|
|
#if 0
|
||
|
|
int response;
|
||
|
|
|
||
|
|
printf(
|
||
|
|
"fdintCOPY_FILE\n"
|
||
|
|
" file name in cabinet = %s\n"
|
||
|
|
" uncompressed file size = %d\n"
|
||
|
|
" copy this file? (y/n): ",
|
||
|
|
pfdin->psz1,
|
||
|
|
pfdin->cb
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
handle = file_open(
|
||
|
|
pfdin->psz1,
|
||
|
|
_O_BINARY | _O_CREAT | _O_WRONLY | _O_SEQUENTIAL | _O_TRUNC,
|
||
|
|
_S_IREAD | _S_IWRITE
|
||
|
|
);
|
||
|
|
|
||
|
|
return handle;
|
||
|
|
}
|
||
|
|
|
||
|
|
case fdintCLOSE_FILE_INFO: // close the file, set relevant info
|
||
|
|
{
|
||
|
|
#if 0
|
||
|
|
HANDLE handle;
|
||
|
|
DWORD attrs;
|
||
|
|
CHAR destination[256];
|
||
|
|
|
||
|
|
printf(
|
||
|
|
"fdintCLOSE_FILE_INFO\n"
|
||
|
|
" file name in cabinet = %s\n"
|
||
|
|
"\n",
|
||
|
|
pfdin->psz1
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
|
||
|
|
file_close(pfdin->hf);
|
||
|
|
|
||
|
|
return TRUE;
|
||
|
|
}
|
||
|
|
|
||
|
|
case fdintNEXT_CABINET: // file continued to next cabinet
|
||
|
|
#if 0
|
||
|
|
printf(
|
||
|
|
"fdintNEXT_CABINET\n"
|
||
|
|
" name of next cabinet where file continued = %s\n"
|
||
|
|
" name of next disk where file continued = %s\n"
|
||
|
|
" cabinet path name = %s\n"
|
||
|
|
"\n",
|
||
|
|
pfdin->psz1,
|
||
|
|
pfdin->psz2,
|
||
|
|
pfdin->psz3
|
||
|
|
);
|
||
|
|
#endif
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
return 0;
|
||
|
|
}
|
||
|
|
|
||
|
|
HRESULT HandleCab(LPSTR cabinet_fullpath)
|
||
|
|
{
|
||
|
|
ERF erf;
|
||
|
|
HFDI hfdi;
|
||
|
|
int hf;
|
||
|
|
FDICABINETINFO fdici;
|
||
|
|
CHAR *p;
|
||
|
|
CHAR cabinet_name[256];
|
||
|
|
CHAR cabinet_path[256];
|
||
|
|
CHAR szCurrentDirectory[MAX_PATH];
|
||
|
|
CHAR szdrive[_MAX_DRIVE];
|
||
|
|
CHAR szPathName[_MAX_PATH]; // This will be the dir we need to create
|
||
|
|
CHAR szdir[_MAX_DIR];
|
||
|
|
CHAR szfname[_MAX_FNAME];
|
||
|
|
CHAR szext[_MAX_EXT];
|
||
|
|
CHAR szcabinet_fullpath[MAX_PATH+1];
|
||
|
|
HRESULT err = S_OK;
|
||
|
|
|
||
|
|
lstrcpyA(szcabinet_fullpath, cabinet_fullpath);
|
||
|
|
|
||
|
|
if (GetCurrentDirectoryA(sizeof(szCurrentDirectory), szCurrentDirectory))
|
||
|
|
{
|
||
|
|
// Split the provided path to get at the drive and path portion
|
||
|
|
_splitpath( szcabinet_fullpath, szdrive, szdir, szfname, szext );
|
||
|
|
wsprintfA(szPathName, "%s%s", szdrive, szdir);
|
||
|
|
|
||
|
|
// Set the directory to where the cab is
|
||
|
|
if (!SetCurrentDirectoryA(szPathName))
|
||
|
|
{
|
||
|
|
return(GetLastError());
|
||
|
|
}
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
return(GetLastError());
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
do
|
||
|
|
{
|
||
|
|
hfdi = FDICreate(mem_alloc,
|
||
|
|
mem_free,
|
||
|
|
file_open,
|
||
|
|
file_read,
|
||
|
|
file_write,
|
||
|
|
file_close,
|
||
|
|
file_seek,
|
||
|
|
cpuUNKNOWN,
|
||
|
|
&erf);
|
||
|
|
|
||
|
|
if (hfdi == NULL)
|
||
|
|
{
|
||
|
|
err = -1;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
/*
|
||
|
|
* Is this file really a cabinet?
|
||
|
|
*/
|
||
|
|
hf = file_open(
|
||
|
|
szcabinet_fullpath,
|
||
|
|
_O_BINARY | _O_RDONLY | _O_SEQUENTIAL,
|
||
|
|
0
|
||
|
|
);
|
||
|
|
|
||
|
|
if (hf == -1)
|
||
|
|
{
|
||
|
|
(void) FDIDestroy(hfdi);
|
||
|
|
|
||
|
|
// Error Opening the file
|
||
|
|
err = -2;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
if (FALSE == FDIIsCabinet(
|
||
|
|
hfdi,
|
||
|
|
hf,
|
||
|
|
&fdici))
|
||
|
|
{
|
||
|
|
/*
|
||
|
|
* No, it's not a cabinet!
|
||
|
|
*/
|
||
|
|
_close(hf);
|
||
|
|
|
||
|
|
(void) FDIDestroy(hfdi);
|
||
|
|
err = -3;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
_close(hf);
|
||
|
|
}
|
||
|
|
|
||
|
|
p = strrchr(szcabinet_fullpath, '\\');
|
||
|
|
|
||
|
|
if (p == NULL)
|
||
|
|
{
|
||
|
|
lstrcpyA(cabinet_name, szcabinet_fullpath);
|
||
|
|
lstrcpyA(cabinet_path, "");
|
||
|
|
}
|
||
|
|
else
|
||
|
|
{
|
||
|
|
lstrcpyA(cabinet_name, ++p);
|
||
|
|
// Need to make space for the null-terminator that lstrcpyn adds
|
||
|
|
lstrcpynA(cabinet_path, szcabinet_fullpath, (int) (p-szcabinet_fullpath)+1);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (TRUE != FDICopy(
|
||
|
|
hfdi,
|
||
|
|
cabinet_name,
|
||
|
|
cabinet_path,
|
||
|
|
0,
|
||
|
|
notification_function,
|
||
|
|
NULL,
|
||
|
|
NULL))
|
||
|
|
{
|
||
|
|
// Extract Failed.
|
||
|
|
(void) FDIDestroy(hfdi);
|
||
|
|
err = -4;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (FDIDestroy(hfdi) != TRUE)
|
||
|
|
{
|
||
|
|
|
||
|
|
// why in the world would the context destroy fail ?
|
||
|
|
err = -5;
|
||
|
|
break;
|
||
|
|
|
||
|
|
}
|
||
|
|
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
while(1 );
|
||
|
|
|
||
|
|
|
||
|
|
// Set the directory back to the original place
|
||
|
|
if (!SetCurrentDirectoryA(szCurrentDirectory))
|
||
|
|
return(GetLastError());
|
||
|
|
|
||
|
|
|
||
|
|
return err;
|
||
|
|
}
|
||
|
|
|
||
|
|
void CleanupCabHandler()
|
||
|
|
{
|
||
|
|
if (hCabinetDll != NULL)
|
||
|
|
{
|
||
|
|
FreeLibrary(hCabinetDll);
|
||
|
|
}
|
||
|
|
}
|