762 lines
17 KiB
C
762 lines
17 KiB
C
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#include <windows.h>
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#include <lzexpand.h>
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#include <fcntl.h>
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/************************************************************************\
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*
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* NOTE!!!!
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*
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* While the 'Diamond' interfaced functions defined in this file are
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* multi thread safe, EACH THREAD MUST ONLY HAVE ONE DIAMOND FILE
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* OPEN AT A TIME! (ie. You can not nest InitDiamond()/TermDiamond()
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* pairs in one thread of execution.)
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*
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\************************************************************************/
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//
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// diamond headers
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//
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#include <diamondd.h>
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#include "mydiam.h"
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HINSTANCE hCabinet;
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DWORD cCabinetLoad;
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typedef HFDI (DIAMONDAPI * tFDICreate) (PFNALLOC pfnalloc,
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PFNFREE pfnfree,
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PFNOPEN pfnopen,
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PFNREAD pfnread,
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PFNWRITE pfnwrite,
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PFNCLOSE pfnclose,
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PFNSEEK pfnseek,
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int cpuType,
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PERF perf);
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typedef BOOL (DIAMONDAPI * tFDIIsCabinet)(HFDI hfdi,
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INT_PTR hf,
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PFDICABINETINFO pfdici);
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typedef BOOL (DIAMONDAPI * tFDICopy)(HFDI hfdi,
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char FAR *pszCabinet,
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char FAR *pszCabPath,
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int flags,
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PFNFDINOTIFY pfnfdin,
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PFNFDIDECRYPT pfnfdid,
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void FAR *pvUser);
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typedef BOOL (DIAMONDAPI * tFDIDestroy)(HFDI hfdi);
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tFDICreate pFDICreate;
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tFDIIsCabinet pFDIIsCabinet;
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tFDICopy pFDICopy;
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tFDIDestroy pFDIDestroy;
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// this function is the same as CharNextA, available locally
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extern LPSTR WINAPI VerCharNextA(LPCSTR lpCurrentChar);
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INT CopyDateTimeStamp(INT_PTR doshFrom, INT_PTR doshTo)
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{
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FILETIME lpCreationTime, lpLastAccessTime, lpLastWriteTime;
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if (!GetFileTime((HANDLE) doshFrom, &lpCreationTime, &lpLastAccessTime,
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&lpLastWriteTime)) {
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return ((INT)LZERROR_BADINHANDLE);
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}
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if (!SetFileTime((HANDLE) doshTo, &lpCreationTime, &lpLastAccessTime,
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&lpLastWriteTime)) {
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return ((INT)LZERROR_BADINHANDLE);
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}
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return (TRUE);
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}
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INT_PTR
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DIAMONDAPI
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SpdFdiOpen(
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IN PSTR FileName,
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IN int oflag,
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IN int pmode
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);
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int
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DIAMONDAPI
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SpdFdiClose(
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IN INT_PTR Handle
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);
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typedef struct _DIAMOND_INFO {
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//
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// A read handle to the source file.
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//
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INT_PTR SourceFileHandle;
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//
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// File names.
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//
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PSTR SourceFileName;
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PSTR TargetFileName;
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//
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// Flag indicating whether to rename the target file.
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//
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BOOL RenameTargetFile;
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//
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// Pointer to LZ information structure.
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// We'll fill in some of the fields to fool expand.
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//
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PLZINFO pLZI;
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} DIAMOND_INFO, *PDIAMOND_INFO;
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PSTR
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StringRevChar(
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IN PSTR String,
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IN CHAR Char
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)
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{
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//
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// Although not the most efficient possible algoeithm in each case,
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// this algorithm is correct for unicode, sbcs, or dbcs.
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//
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PCHAR Occurrence,Next;
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//
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// Check each character in the string and remember
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// the most recently encountered occurrence of the desired char.
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//
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for (Occurrence=NULL,Next=VerCharNextA(String); *String; ) {
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if (!memcmp(String,&Char,(int)((PUCHAR)Next-(PUCHAR)String))) {
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Occurrence = String;
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}
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String = Next;
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Next = VerCharNextA(Next);
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}
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//
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// Return address of final occurrence of the character
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// (will be NULL if not found at all).
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//
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return (Occurrence);
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}
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INT_PTR
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DIAMONDAPI
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DiamondNotifyFunction(
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IN FDINOTIFICATIONTYPE Operation,
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IN PFDINOTIFICATION Parameters
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)
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{
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switch (Operation) {
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case fdintCABINET_INFO:
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case fdintNEXT_CABINET:
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case fdintPARTIAL_FILE:
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case fdintENUMERATE:
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//
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// Cabinet management functions which we don't use.
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// Return success.
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//
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return (0);
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case fdintCOPY_FILE:
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//
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// Diamond is asking us whether we want to copy the file.
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//
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{
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PDIAMOND_INFO Info = (PDIAMOND_INFO)Parameters->pv;
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HFILE h;
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//
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// If we need to rename the target file, do that here.
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// The name stored in the cabinet file will be used as
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// the uncompressed name.
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//
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if (Info->RenameTargetFile) {
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PSTR p,q;
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//
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// Find the start of the filename part of the target.
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//
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if (p = StringRevChar(Info->TargetFileName,'\\')) {
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p++;
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} else {
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p = Info->TargetFileName;
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}
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//
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// Find the start of the filename part of the name in the cabinet.
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//
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if (q = StringRevChar(Parameters->psz1,'\\')) {
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q++;
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} else {
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q = Parameters->psz1;
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}
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//
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// Copy the filename part of the name in the cabinet over
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// the filename part of the name in the target spec.
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//
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lstrcpyA(p,q);
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}
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{
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// Check they're not the same file
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CHAR Source[MAX_PATH];
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CHAR Target[MAX_PATH];
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PSTR FileName;
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DWORD PathLenSource;
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DWORD PathLenTarget;
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PathLenSource = GetFullPathNameA(Info->SourceFileName,
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MAX_PATH,
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Source,
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&FileName);
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PathLenTarget = GetFullPathNameA(Info->TargetFileName,
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MAX_PATH,
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Target,
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&FileName);
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if (PathLenSource == 0 || PathLenSource >= MAX_PATH ||
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PathLenTarget == 0 || PathLenTarget >= MAX_PATH ||
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lstrcmpiA(Source, Target) == 0) {
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return 0;
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}
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}
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//
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// Remember the uncompressed size and open the file.
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// Returns -1 if an error occurs opening the file.
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//
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Info->pLZI->cblOutSize = Parameters->cb;
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h = _lcreat(Info->TargetFileName,0);
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if (h == HFILE_ERROR) {
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DiamondLastIoError = LZERROR_BADOUTHANDLE;
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return (-1);
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}
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return (h);
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}
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case fdintCLOSE_FILE_INFO:
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//
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// Diamond is done with the target file and wants us to close it.
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// (ie, this is the counterpart to fdint_COPY_FILE).
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//
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{
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PDIAMOND_INFO Info = (PDIAMOND_INFO)Parameters->pv;
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CopyDateTimeStamp(Info->SourceFileHandle,Parameters->hf);
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_lclose((HFILE)Parameters->hf);
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}
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return (TRUE);
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default:
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//
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// invalid operation
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//
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return(-1);
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}
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}
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PVOID
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DIAMONDAPI
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SpdFdiAlloc(
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IN ULONG NumberOfBytes
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)
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/*++
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Routine Description:
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Callback used by FDICopy to allocate memory.
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Arguments:
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NumberOfBytes - supplies desired size of block.
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Return Value:
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Returns pointer to a block of memory or NULL
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if memory cannot be allocated.
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--*/
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{
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return ((PVOID)LocalAlloc(LMEM_FIXED,NumberOfBytes));
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}
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VOID
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DIAMONDAPI
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SpdFdiFree(
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IN PVOID Block
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)
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/*++
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Routine Description:
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Callback used by FDICopy to free a memory block.
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The block must have been allocated with SpdFdiAlloc().
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Arguments:
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Block - supplies pointer to block of memory to be freed.
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Return Value:
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None.
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--*/
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{
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LocalFree((HLOCAL)Block);
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}
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INT_PTR
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DIAMONDAPI
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SpdFdiOpen(
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IN PSTR FileName,
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IN int oflag,
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IN int pmode
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)
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/*++
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Routine Description:
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Callback used by FDICopy to open files.
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Arguments:
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FileName - supplies name of file to be opened.
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oflag - supplies flags for open.
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pmode - supplies additional flags for open.
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Return Value:
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Handle to open file or -1 if error occurs.
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--*/
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{
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HFILE h;
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int OpenMode;
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if (oflag & _O_WRONLY) {
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OpenMode = OF_WRITE;
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} else {
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if (oflag & _O_RDWR) {
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OpenMode = OF_READWRITE;
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} else {
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OpenMode = OF_READ;
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}
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}
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h = _lopen(FileName,OpenMode | OF_SHARE_DENY_WRITE);
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if (h == HFILE_ERROR) {
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DiamondLastIoError = LZERROR_BADINHANDLE;
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return (-1);
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}
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return ((INT_PTR)h);
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}
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UINT
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DIAMONDAPI
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SpdFdiRead(
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IN INT_PTR Handle,
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OUT PVOID pv,
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IN UINT ByteCount
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)
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/*++
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Routine Description:
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Callback used by FDICopy to read from a file.
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Arguments:
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Handle - supplies handle to open file to be read from.
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pv - supplies pointer to buffer to receive bytes we read.
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ByteCount - supplies number of bytes to read.
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Return Value:
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Number of bytes read (ByteCount) or -1 if an error occurs.
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--*/
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{
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UINT rc;
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rc = _lread((HFILE)Handle,pv,ByteCount);
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if (rc == HFILE_ERROR) {
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rc = (UINT)(-1);
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DiamondLastIoError = LZERROR_READ;
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}
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return (rc);
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}
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UINT
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DIAMONDAPI
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SpdFdiWrite(
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IN INT_PTR Handle,
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IN PVOID pv,
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IN UINT ByteCount
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)
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/*++
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Routine Description:
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Callback used by FDICopy to write to a file.
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Arguments:
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Handle - supplies handle to open file to be written to.
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pv - supplies pointer to buffer containing bytes to write.
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ByteCount - supplies number of bytes to write.
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Return Value:
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|
|
||
|
|
Number of bytes written (ByteCount) or -1 if an error occurs.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
UINT rc;
|
||
|
|
|
||
|
|
rc = _lwrite((HFILE)Handle,pv,ByteCount);
|
||
|
|
|
||
|
|
if (rc == HFILE_ERROR) {
|
||
|
|
|
||
|
|
DiamondLastIoError = (GetLastError() == ERROR_DISK_FULL) ? LZERROR_WRITE : LZERROR_BADOUTHANDLE;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
if (rc != ByteCount) {
|
||
|
|
//
|
||
|
|
// let caller interpret return value but record last error just in case
|
||
|
|
//
|
||
|
|
DiamondLastIoError = LZERROR_WRITE;
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
return (rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
int
|
||
|
|
DIAMONDAPI
|
||
|
|
SpdFdiClose(
|
||
|
|
IN INT_PTR Handle
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Callback used by FDICopy to close files.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Handle - handle of file to close.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
0 (success).
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
_lclose((HFILE)Handle);
|
||
|
|
return (0);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
LONG
|
||
|
|
DIAMONDAPI
|
||
|
|
SpdFdiSeek(
|
||
|
|
IN INT_PTR Handle,
|
||
|
|
IN long Distance,
|
||
|
|
IN int SeekType
|
||
|
|
)
|
||
|
|
|
||
|
|
/*++
|
||
|
|
|
||
|
|
Routine Description:
|
||
|
|
|
||
|
|
Callback used by FDICopy to seek files.
|
||
|
|
|
||
|
|
Arguments:
|
||
|
|
|
||
|
|
Handle - handle of file to close.
|
||
|
|
|
||
|
|
Distance - supplies distance to seek. Interpretation of this
|
||
|
|
parameter depends on the value of SeekType.
|
||
|
|
|
||
|
|
SeekType - supplies a value indicating how Distance is to be
|
||
|
|
interpreted; one of SEEK_SET, SEEK_CUR, SEEK_END.
|
||
|
|
|
||
|
|
Return Value:
|
||
|
|
|
||
|
|
New file offset or -1 if an error occurs.
|
||
|
|
|
||
|
|
--*/
|
||
|
|
|
||
|
|
{
|
||
|
|
LONG rc;
|
||
|
|
|
||
|
|
rc = _llseek((HFILE)Handle,Distance,SeekType);
|
||
|
|
|
||
|
|
if (rc == HFILE_ERROR) {
|
||
|
|
DiamondLastIoError = LZERROR_BADINHANDLE;
|
||
|
|
rc = -1L;
|
||
|
|
}
|
||
|
|
|
||
|
|
return (rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// this function is linked in from ntdll
|
||
|
|
//
|
||
|
|
extern int sprintf(LPSTR, LPCSTR, ...);
|
||
|
|
|
||
|
|
INT
|
||
|
|
ExpandDiamondFile(
|
||
|
|
IN PSTR SourceFileName, // Note ASCII
|
||
|
|
IN PTSTR TargetFileNameT,
|
||
|
|
IN BOOL RenameTarget,
|
||
|
|
OUT PLZINFO pLZI
|
||
|
|
)
|
||
|
|
{
|
||
|
|
BOOL b;
|
||
|
|
INT rc;
|
||
|
|
INT_PTR h;
|
||
|
|
DIAMOND_INFO DiamondInfo;
|
||
|
|
CHAR TargetFileName[MAX_PATH];
|
||
|
|
|
||
|
|
sprintf(TargetFileName, "%ls", TargetFileNameT);
|
||
|
|
|
||
|
|
if (!FdiContext) {
|
||
|
|
return (LZERROR_BADVALUE);
|
||
|
|
}
|
||
|
|
|
||
|
|
DiamondLastIoError = TRUE;
|
||
|
|
|
||
|
|
//
|
||
|
|
// Get a handle to the source to use to
|
||
|
|
// copy the date and time stamp.
|
||
|
|
//
|
||
|
|
h = SpdFdiOpen(SourceFileName,_O_RDONLY,0);
|
||
|
|
if (h == -1) {
|
||
|
|
return (LZERROR_BADINHANDLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
pLZI->cblInSize = GetFileSize((HANDLE)h,NULL);
|
||
|
|
if (pLZI->cblInSize == -1) {
|
||
|
|
SpdFdiClose(h);
|
||
|
|
return (LZERROR_BADINHANDLE);
|
||
|
|
}
|
||
|
|
|
||
|
|
DiamondInfo.SourceFileHandle = h;
|
||
|
|
DiamondInfo.SourceFileName = SourceFileName;
|
||
|
|
DiamondInfo.TargetFileName = TargetFileName;
|
||
|
|
DiamondInfo.RenameTargetFile = RenameTarget;
|
||
|
|
DiamondInfo.pLZI = pLZI;
|
||
|
|
|
||
|
|
b = pFDICopy(
|
||
|
|
FdiContext,
|
||
|
|
SourceFileName, // pass the whole path as the name
|
||
|
|
"", // don't bother with the path part
|
||
|
|
0, // flags
|
||
|
|
DiamondNotifyFunction,
|
||
|
|
NULL, // no decryption
|
||
|
|
&DiamondInfo
|
||
|
|
);
|
||
|
|
|
||
|
|
if (b) {
|
||
|
|
|
||
|
|
rc = TRUE;
|
||
|
|
|
||
|
|
} else {
|
||
|
|
|
||
|
|
switch (FdiError.erfOper) {
|
||
|
|
|
||
|
|
case FDIERROR_CORRUPT_CABINET:
|
||
|
|
case FDIERROR_UNKNOWN_CABINET_VERSION:
|
||
|
|
case FDIERROR_BAD_COMPR_TYPE:
|
||
|
|
rc = LZERROR_READ; // causes SID_FORMAT_ERROR message
|
||
|
|
break;
|
||
|
|
|
||
|
|
case FDIERROR_ALLOC_FAIL:
|
||
|
|
rc = LZERROR_GLOBALLOC;
|
||
|
|
break;
|
||
|
|
|
||
|
|
case FDIERROR_TARGET_FILE:
|
||
|
|
case FDIERROR_USER_ABORT:
|
||
|
|
rc = DiamondLastIoError;
|
||
|
|
break;
|
||
|
|
|
||
|
|
default:
|
||
|
|
//
|
||
|
|
// The rest of the errors are not handled specially.
|
||
|
|
//
|
||
|
|
rc = LZERROR_BADVALUE;
|
||
|
|
break;
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Remove the partial target file.
|
||
|
|
//
|
||
|
|
DeleteFileA(TargetFileName);
|
||
|
|
}
|
||
|
|
|
||
|
|
SpdFdiClose(h);
|
||
|
|
|
||
|
|
return (rc);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
BOOL
|
||
|
|
IsDiamondFile(
|
||
|
|
IN PSTR FileName
|
||
|
|
)
|
||
|
|
{
|
||
|
|
FDICABINETINFO CabinetInfo;
|
||
|
|
BOOL b;
|
||
|
|
INT_PTR h;
|
||
|
|
|
||
|
|
if (!FdiContext) {
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
//
|
||
|
|
// Open the file such that the handle is valid for use
|
||
|
|
// in the diamond context (ie, seek, read routines above).
|
||
|
|
//
|
||
|
|
h = SpdFdiOpen(FileName,_O_RDONLY,0);
|
||
|
|
if (h == -1) {
|
||
|
|
return (FALSE);
|
||
|
|
}
|
||
|
|
|
||
|
|
b = pFDIIsCabinet(FdiContext,h,&CabinetInfo);
|
||
|
|
|
||
|
|
SpdFdiClose(h);
|
||
|
|
|
||
|
|
return (b);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
DWORD
|
||
|
|
InitDiamond(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
PDIAMOND_CONTEXT pdcx;
|
||
|
|
|
||
|
|
if (!GotDmdTlsSlot())
|
||
|
|
return VIF_OUTOFMEMORY;
|
||
|
|
|
||
|
|
if (GotDmdContext())
|
||
|
|
return VIF_OUTOFMEMORY;
|
||
|
|
|
||
|
|
pdcx = LocalAlloc(LPTR, sizeof(DIAMOND_CONTEXT));
|
||
|
|
|
||
|
|
if (pdcx == NULL || !TlsSetValue(itlsDiamondContext, pdcx)) {
|
||
|
|
/*
|
||
|
|
* For some unknown reason, we can't associate
|
||
|
|
* our thread storage with the slot, so free
|
||
|
|
* it and say we never got one.
|
||
|
|
*/
|
||
|
|
|
||
|
|
if (pdcx) {
|
||
|
|
LocalFree(pdcx);
|
||
|
|
}
|
||
|
|
return VIF_OUTOFMEMORY;
|
||
|
|
}
|
||
|
|
|
||
|
|
if (!cCabinetLoad) {
|
||
|
|
hCabinet = LoadLibraryW(L"CABINET.DLL");
|
||
|
|
if (!hCabinet) {
|
||
|
|
return (VIF_CANNOTLOADCABINET);
|
||
|
|
}
|
||
|
|
pFDICreate = (tFDICreate) GetProcAddress(hCabinet, "FDICreate");
|
||
|
|
pFDIDestroy = (tFDIDestroy) GetProcAddress(hCabinet, "FDIDestroy");
|
||
|
|
pFDIIsCabinet = (tFDIIsCabinet) GetProcAddress(hCabinet, "FDIIsCabinet");
|
||
|
|
pFDICopy = (tFDICopy) GetProcAddress(hCabinet, "FDICopy");
|
||
|
|
|
||
|
|
if (!(pFDICreate && pFDIDestroy && pFDIIsCabinet && pFDICopy)) {
|
||
|
|
FreeLibrary(hCabinet);
|
||
|
|
return (VIF_CANNOTLOADCABINET);
|
||
|
|
}
|
||
|
|
|
||
|
|
if (InterlockedExchangeAdd(&cCabinetLoad, 1) != 0) {
|
||
|
|
// Multiple threads are attempting to LoadLib
|
||
|
|
// Free one here.
|
||
|
|
FreeLibrary(hCabinet);
|
||
|
|
}
|
||
|
|
}
|
||
|
|
|
||
|
|
SetFdiContext( pFDICreate(
|
||
|
|
SpdFdiAlloc,
|
||
|
|
SpdFdiFree,
|
||
|
|
SpdFdiOpen,
|
||
|
|
SpdFdiRead,
|
||
|
|
SpdFdiWrite,
|
||
|
|
SpdFdiClose,
|
||
|
|
SpdFdiSeek,
|
||
|
|
cpuUNKNOWN,
|
||
|
|
&FdiError
|
||
|
|
));
|
||
|
|
|
||
|
|
return ((FdiContext == NULL) ? VIF_CANNOTLOADCABINET : 0);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
VOID
|
||
|
|
TermDiamond(
|
||
|
|
VOID
|
||
|
|
)
|
||
|
|
{
|
||
|
|
if (!GotDmdTlsSlot() || !GotDmdContext())
|
||
|
|
return;
|
||
|
|
|
||
|
|
if (FdiContext) {
|
||
|
|
pFDIDestroy(FdiContext);
|
||
|
|
SetFdiContext( NULL );
|
||
|
|
}
|
||
|
|
|
||
|
|
LocalFree( TlsGetValue(itlsDiamondContext) );
|
||
|
|
TlsSetValue(itlsDiamondContext, NULL);
|
||
|
|
}
|
||
|
|
|
||
|
|
|
||
|
|
|