/* ===========================================================================
* Cleanup then free the given gz_stream. Return a zlib error code.
Try freeing in the reverse order of allocations.
*/
static int destroy (gz_stream *s)
{
int err = Z_OK;
if (!s)
return Z_STREAM_ERROR;
TRYFREE(s->msg);
if (s->stream.state != NULL) {
if (s->mode == 'w') {
#ifdef NO_DEFLATE
err = Z_STREAM_ERROR;
#else
err = deflateEnd(&(s->stream));
#endif
} else if (s->mode == 'r') {
err = inflateEnd(&(s->stream));
}
}
if (s->file != (SYS_FILEHANDLE )NULL)
{
FIO_std.fclose(s->file);
}
if (s->z_err < 0)
err = s->z_err;
TRYFREE(s->inbuf);
TRYFREE(s->outbuf);
TRYFREE(s);
return err;
}
int UnCompressZip::unzCloseCurrentFile (unzFile file)
{
int err=UNZ_OK;
unz64_s* s;
file_in_zip64_read_info_s* pfile_in_zip_read_info;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz64_s*)file;
pfile_in_zip_read_info=s->pfile_in_zip_read;
if (pfile_in_zip_read_info==NULL)
return UNZ_PARAMERROR;
if ((pfile_in_zip_read_info->rest_read_uncompressed == 0) &&
(!pfile_in_zip_read_info->raw))
{
if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
err=UNZ_CRCERROR;
}
TRYFREE(pfile_in_zip_read_info->read_buffer);
pfile_in_zip_read_info->read_buffer = NULL;
if (pfile_in_zip_read_info->stream_initialised == Z_DEFLATED)
inflateEnd(&pfile_in_zip_read_info->stream);
pfile_in_zip_read_info->stream_initialised = 0;
TRYFREE(pfile_in_zip_read_info);
s->pfile_in_zip_read=NULL;
return err;
}
/*
Close the file in zip opened with unzipOpenCurrentFile
Return UNZ_CRCERROR if all the file was read but the CRC is not good
*/
extern int ZEXPORT unzCloseCurrentFile (unzFile file)
{
int err=UNZ_OK;
unz_s* s;
file_in_zip_read_info_s* pfile_in_zip_read_info;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
pfile_in_zip_read_info=s->pfile_in_zip_read;
if (pfile_in_zip_read_info==NULL)
return UNZ_PARAMERROR;
if (pfile_in_zip_read_info->rest_read_uncompressed == 0)
{
if (pfile_in_zip_read_info->crc32 != pfile_in_zip_read_info->crc32_wait)
err=UNZ_CRCERROR;
}
TRYFREE(pfile_in_zip_read_info->read_buffer);
pfile_in_zip_read_info->read_buffer = NULL;
if (pfile_in_zip_read_info->stream_initialised)
inflateEnd(&pfile_in_zip_read_info->stream);
pfile_in_zip_read_info->stream_initialised = 0;
TRYFREE(pfile_in_zip_read_info);
s->pfile_in_zip_read=NULL;
return err;
}
//extern
int ZEXPORT unzLocateFile (unzFile file, const char *szFileName, int iCaseSensitivity)
{
unz_s* s;
int err;
/* We remember the 'current' position in the file so that we can jump
* back there if we fail.
*/
unz_file_info cur_file_infoSaved;
unz_file_info_internal cur_file_info_internalSaved;
uLong num_fileSaved;
uLong pos_in_central_dirSaved;
char *szCurrentFileName = NULL;
if (file==NULL)
return UNZ_PARAMERROR;
if (strlen(szFileName)>=UNZ_MAXFILENAMEINZIP)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (!s->current_file_ok) {
return UNZ_END_OF_LIST_OF_FILE;
}
/* Save the current state */
num_fileSaved = s->num_file;
pos_in_central_dirSaved = s->pos_in_central_dir;
cur_file_infoSaved = s->cur_file_info;
cur_file_info_internalSaved = s->cur_file_info_internal;
err = unzGoToFirstFile(file);
szCurrentFileName = (char*) ALLOC(UNZ_MAXFILENAMEINZIP+1); // heap_alloc - 256
while (err == UNZ_OK)
{
err = unzlocal_GetCurrentFileInfoInternal(file,NULL, NULL,
szCurrentFileName,sizeof(szCurrentFileName)-1,
NULL,0,NULL,0);
if (err == UNZ_OK)
{
if (unzStringFileNameCompare(szCurrentFileName,
szFileName,iCaseSensitivity)==0) {
TRYFREE(szCurrentFileName);
return UNZ_OK;
}
err = unzGoToNextFile(file);
}
}
TRYFREE(szCurrentFileName);
/* We failed, so restore the state of the 'current file' to where we
* were.
*/
s->num_file = num_fileSaved ;
s->pos_in_central_dir = pos_in_central_dirSaved ;
s->cur_file_info = cur_file_infoSaved;
s->cur_file_info_internal = cur_file_info_internalSaved;
return err;
}
static void _zcfree (
voidpf opaque,
voidpf ptr)
{
TRYFREE(ptr);
if (opaque) return; /* make compiler happy */
}
local void free_datablock( linkedlist_datablock_internal* ldi)
{
while (ldi!=0)
{
linkedlist_datablock_internal* ldinext = ldi->next_datablock;
TRYFREE(ldi);
ldi = ldinext;
}
}
/*
Locate the Central directory of a zipfile (at the end, just before
the global comment)
*/
local uLong ziplocal_SearchCentralDir(
const zlib_filefunc_def* pzlib_filefunc_def,
voidpf filestream)
{
unsigned char* buf;
uLong uSizeFile;
uLong uBackRead;
uLong uMaxBack=0xffff; /* maximum size of global comment */
uLong uPosFound=0;
if (ZSEEK(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
return 0;
uSizeFile = ZTELL(*pzlib_filefunc_def,filestream);
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize,uReadPos ;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
if (ZSEEK(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
break;
if (ZREAD(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
break;
for (i=(int)uReadSize-3; (i--)>0;)
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
{
uPosFound = uReadPos+i;
break;
}
if (uPosFound!=0)
break;
}
TRYFREE(buf);
return uPosFound;
}
/*
Locate the Central directory of a zipfile (at the end, just before
the global comment)
*/
local uLong unzlocal_SearchCentralDir(FILE *fin)
{
unsigned char* buf;
uLong uSizeFile;
uLong uBackRead;
uLong uMaxBack=0xffff; /* maximum size of global comment */
uLong uPosFound=0;
if (fseek(fin,0,SEEK_END) != 0)
return 0;
uSizeFile = ftell( fin );
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize,uReadPos ;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
if (fseek(fin,uReadPos,SEEK_SET)!=0)
break;
if (fread(buf,(uInt)uReadSize,1,fin)!=1)
break;
for (i=(int)uReadSize-3; (i--)>0;)
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
{
uPosFound = uReadPos+i;
break;
}
if (uPosFound!=0)
break;
}
TRYFREE(buf);
return uPosFound;
}
/*
Close a ZipFile opened with unzOpen.
If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
return UNZ_OK if there is no problem. */
ZEXTERN int ZEXPORT unzClose(HUNZFILE file)
{
LPUNZ_INTERNAL s;
if(!file) return UNZ_PARAMERROR;
s = (LPUNZ_INTERNAL)file;
if(s->pfile_in_zip_read) unzCloseCurrentFile(file);
fclose(s->file);
TRYFREE(s);
return UNZ_OK;
}
/*
Close a ZipFile opened with unzipOpen.
If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
return UNZ_OK if there is no problem. */
extern int ZEXPORT unzClose (unzFile file) {
unz_s* s;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (s->pfile_in_zip_read!=NULL)
unzCloseCurrentFile(file);
fclose(s->file);
TRYFREE(s);
return UNZ_OK;
}
int UnCompressZip::unzClose (unzFile file)
{
unz64_s* s;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz64_s*)file;
if (s->pfile_in_zip_read!=NULL)
unzCloseCurrentFile(file);
ZCLOSE64(s->z_filefunc, s->filestream);
TRYFREE(s);
return UNZ_OK;
}
//extern
int ZEXPORT unzClose (unzFile file)
{
unz_s* s;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (s->pfile_in_zip_read!=NULL)
unzCloseCurrentFile(file);
ZCLOSE(s->z_filefunc, s->filestream);
TRYFREE(s);
return UNZ_OK;
}
/*
Close a ZipFile opened with unzipOpen.
If there is files inside the .Zip opened with unzipOpenCurrentFile (see later),
these files MUST be closed with unzipCloseCurrentFile before call unzipClose.
return UNZ_OK if there is no problem. */
int unzClose (unzFile file)
{
unz_s* s;
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (s->pfile_in_zip_read!=NULL)
unzCloseCurrentFile(file);
fclose((FILE*)s->filestream);
TRYFREE(s);
return UNZ_OK;
}
/* Open a Zip file. path contain the full pathname (by example, on
a Windows NT computer "c:\\test\\zlib109.zip" or on an Unix computer
"zlib/zlib109.zip".
If the zipfile cannot be opened (file don't exist or in not valid),
the return value is NULL.
Else, the return value is a HUNZFILE Handle, usable with other
function of this unzip package. */
ZEXTERN HUNZFILE ZEXPORT unzOpen(LPCSTR pszFileName)
{
LPUNZ_INTERNAL s;
int err = UNZ_OK;
int iPathSize;
BOOL fPath;
char buf[4];
LPSTR pszName;
// getting the full path to the file
iPathSize = GetFullPathName(pszFileName, 0, buf, &pszName);
if(!iPathSize)
{ iPathSize = lstrlen(pszFileName);
fPath = FALSE; }
else fPath = TRUE;
// alloc memory for the internal structure
s = (LPUNZ_INTERNAL)ALLOCZ(sizeof(UNZ_INTERNAL) + iPathSize + 2);
if(!s) return NULL;
// copying the file path to the memory
if(fPath)
{
iPathSize = GetFullPathName(pszFileName, iPathSize + 1,
s->pszFilePath, &pszName);
if(!iPathSize) err = UNZ_ERRNO;
}
else
{ zmemcpy(s->pszFilePath, pszFileName, iPathSize);
s->pszFilePath[iPathSize] = 0; }
// opening the file
if(err == UNZ_OK) err = unzLocal_OpenInternal(s);
if(err != UNZ_OK)
{ TRYFREE(s); s = NULL; }
return (HUNZFILE)s;
}
static DWORD unzlocal_SearchCentralDir(const zlib_filefunc_def *pzlib_filefunc_def, void *filestream)
{
BYTE *buf;
DWORD uSizeFile;
DWORD uBackRead;
DWORD uMaxBack = 0xffff; /* maximum size of global comment */
DWORD uPosFound = 0;
if (ZSEEK(*pzlib_filefunc_def, filestream, 0, SEEK_END) != 0)
{
return 0;
}
uSizeFile = ZTELL(*pzlib_filefunc_def, filestream);
if (uMaxBack > uSizeFile)
{
uMaxBack = uSizeFile;
}
buf = (BYTE*)ALLOC(BUFREADCOMMENT + 4);
if (buf == NULL)
{
return 0;
}
uBackRead = 4;
while (uBackRead < uMaxBack)
{
DWORD uReadSize, uReadPos;
int i;
if (uBackRead + BUFREADCOMMENT > uMaxBack)
{
uBackRead = uMaxBack;
}
else
{
uBackRead += BUFREADCOMMENT;
}
uReadPos = uSizeFile - uBackRead;
uReadSize = ((BUFREADCOMMENT + 4) < (uSizeFile - uReadPos)) ? (BUFREADCOMMENT + 4): (uSizeFile - uReadPos);
if (ZSEEK(*pzlib_filefunc_def, filestream, uReadPos, SEEK_SET) != 0)
{
break;
}
if (ZREAD(*pzlib_filefunc_def, filestream, buf, uReadSize) != uReadSize)
{
break;
}
for (i = (int)uReadSize - 3; (i--) > 0;)
if (((*(buf + i)) == 0x50) && ((*(buf + i + 1)) == 0x4b) && ((*(buf + i + 2)) == 0x05) && ((*(buf + i + 3)) == 0x06))
{
uPosFound = uReadPos + i;
break;
}
if (uPosFound != 0)
{
break;
}
}
TRYFREE(buf);
return uPosFound;
}
/*
Locate the Central directory of a zipfile (at the end, just before
the global comment)
*/
local uLong unzlocal_SearchCentralDir(
//FILE *fin)
mpo_io *fin) // MPO
{
unsigned char* buf;
uLong uSizeFile;
uLong uBackRead;
uLong uMaxBack=0xffff; /* maximum size of global comment */
uLong uPosFound=0;
// start MPO
// if (fseek(fin,0,SEEK_END) != 0)
// return 0;
// uSizeFile = ftell( fin );
mpo_seek(0, MPO_SEEK_END, fin); // probably not necessary, but just in case
uSizeFile = (uLong) fin->size; // WARNING : we assume that we won't handle any huge .zip files
// stop MPO
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize,uReadPos ;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uSizeFile-uReadPos);
//if (fseek(fin,uReadPos,SEEK_SET)!=0)
if (!mpo_seek(uReadPos, MPO_SEEK_SET, fin)) // MPO
break;
// if (fread(buf,(uInt)uReadSize,1,fin)!=1)
if (!mpo_read(buf, uReadSize, NULL, fin) || fin->eof) // MPO
break;
for (i=(int)uReadSize-3; (i--)>0;)
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
((*(buf+i+2))==0x05) && ((*(buf+i+3))==0x06))
{
uPosFound = uReadPos+i;
break;
}
if (uPosFound!=0)
break;
}
TRYFREE(buf);
return uPosFound;
}
int UnCompressZip::unzOpenCurrentFile3 (unzFile file, int* method, int* level, int raw, const char* password)
{
int err=UNZ_OK;
uInt iSizeVar;
unz64_s* s;
file_in_zip64_read_info_s* pfile_in_zip_read_info;
ZPOS64_T offset_local_extrafield; /* offset of the local extra field */
uInt size_local_extrafield; /* size of the local extra field */
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz64_s*)file;
if (!s->current_file_ok)
return UNZ_PARAMERROR;
if (s->pfile_in_zip_read != NULL)
unzCloseCurrentFile(file);
if (unz64local_CheckCurrentFileCoherencyHeader(s,&iSizeVar, &offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
return UNZ_BADZIPFILE;
pfile_in_zip_read_info = (file_in_zip64_read_info_s*)ALLOC(sizeof(file_in_zip64_read_info_s));
if (pfile_in_zip_read_info==NULL)
return UNZ_INTERNALERROR;
pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
pfile_in_zip_read_info->pos_local_extrafield=0;
pfile_in_zip_read_info->raw=raw;
if (pfile_in_zip_read_info->read_buffer==NULL)
{
TRYFREE(pfile_in_zip_read_info);
return UNZ_INTERNALERROR;
}
pfile_in_zip_read_info->stream_initialised=0;
if (method!=NULL)
*method = (int)s->cur_file_info.compression_method;
if (level!=NULL)
{
*level = 6;
switch (s->cur_file_info.flag & 0x06)
{
case 6 : *level = 1; break;
case 4 : *level = 2; break;
case 2 : *level = 9; break;
}
}
if ((s->cur_file_info.compression_method!=0) &&
(s->cur_file_info.compression_method!=Z_BZIP2ED) &&
(s->cur_file_info.compression_method!=Z_DEFLATED))
err=UNZ_BADZIPFILE;
pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
pfile_in_zip_read_info->crc32=0;
pfile_in_zip_read_info->total_out_64=0;
pfile_in_zip_read_info->compression_method = s->cur_file_info.compression_method;
pfile_in_zip_read_info->filestream=s->filestream;
pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
pfile_in_zip_read_info->stream.total_out = 0;
if ((s->cur_file_info.compression_method==Z_BZIP2ED) && (!raw))
pfile_in_zip_read_info->raw=1;
else if ((s->cur_file_info.compression_method==Z_DEFLATED) && (!raw))
{
pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
pfile_in_zip_read_info->stream.zfree = (free_func)0;
pfile_in_zip_read_info->stream.opaque = (voidpf)0;
pfile_in_zip_read_info->stream.next_in = 0;
pfile_in_zip_read_info->stream.avail_in = 0;
err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
if (err == Z_OK)
pfile_in_zip_read_info->stream_initialised=Z_DEFLATED;
else
{
TRYFREE(pfile_in_zip_read_info);
return err;
}
}
pfile_in_zip_read_info->rest_read_compressed = s->cur_file_info.compressed_size ;
pfile_in_zip_read_info->rest_read_uncompressed = s->cur_file_info.uncompressed_size ;
pfile_in_zip_read_info->pos_in_zipfile = s->cur_file_info_internal.offset_curfile +
SIZEZIPLOCALHEADER + iSizeVar;
pfile_in_zip_read_info->stream.avail_in = (uInt)0;
s->pfile_in_zip_read = pfile_in_zip_read_info;
s->encrypted = 0;
return UNZ_OK;
}
ZPOS64_T UnCompressZip::unz64local_SearchCentralDir64(const zlib_filefunc64_32_def* pzlib_filefunc_def,
voidpf filestream)
{
unsigned char* buf;
ZPOS64_T uSizeFile;
ZPOS64_T uBackRead;
ZPOS64_T uMaxBack=0xffff; /* maximum size of global comment */
ZPOS64_T uPosFound=0;
uLong uL;
ZPOS64_T relativeOffset;
if (ZSEEK64(*pzlib_filefunc_def,filestream,0,ZLIB_FILEFUNC_SEEK_END) != 0)
return 0;
uSizeFile = ZTELL64(*pzlib_filefunc_def,filestream);
if (uMaxBack>uSizeFile)
uMaxBack = uSizeFile;
buf = (unsigned char*)ALLOC(BUFREADCOMMENT+4);
if (buf==NULL)
return 0;
uBackRead = 4;
while (uBackRead<uMaxBack)
{
uLong uReadSize;
ZPOS64_T uReadPos;
int i;
if (uBackRead+BUFREADCOMMENT>uMaxBack)
uBackRead = uMaxBack;
else
uBackRead+=BUFREADCOMMENT;
uReadPos = uSizeFile-uBackRead ;
uReadSize = ((BUFREADCOMMENT+4) < (uSizeFile-uReadPos)) ?
(BUFREADCOMMENT+4) : (uLong)(uSizeFile-uReadPos);
if (ZSEEK64(*pzlib_filefunc_def,filestream,uReadPos,ZLIB_FILEFUNC_SEEK_SET)!=0)
break;
if (ZREAD64(*pzlib_filefunc_def,filestream,buf,uReadSize)!=uReadSize)
break;
for (i=(int)uReadSize-3; (i--)>0;)
if (((*(buf+i))==0x50) && ((*(buf+i+1))==0x4b) &&
((*(buf+i+2))==0x06) && ((*(buf+i+3))==0x07))
{
uPosFound = uReadPos+i;
break;
}
if (uPosFound!=0)
break;
}
TRYFREE(buf);
if (uPosFound == 0)
return 0;
if (ZSEEK64(*pzlib_filefunc_def,filestream, uPosFound,ZLIB_FILEFUNC_SEEK_SET)!=0)
return 0;
if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
return 0;
if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
return 0;
if (uL != 0)
return 0;
if (unz64local_getLong64(pzlib_filefunc_def,filestream,&relativeOffset)!=UNZ_OK)
return 0;
if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
return 0;
if (uL != 1)
return 0;
if (ZSEEK64(*pzlib_filefunc_def,filestream, relativeOffset,ZLIB_FILEFUNC_SEEK_SET)!=0)
return 0;
if (unz64local_getLong(pzlib_filefunc_def,filestream,&uL)!=UNZ_OK)
return 0;
if (uL != 0x06064b50)
return 0;
return relativeOffset;
return 0;
}
extern MINIZIP_EXPORT zipFile zipOpen2 (const char *pathname,int append,zipcharpc* globalcomment,zlib_filefunc_def* pzlib_filefunc_def)
{
zip_internal ziinit;
zip_internal* zi;
int err=ZIP_OK;
if (pzlib_filefunc_def==0)
fill_fopen_filefunc(&ziinit.z_filefunc);
else
ziinit.z_filefunc = *pzlib_filefunc_def;
ziinit.filestream = (*(ziinit.z_filefunc.zopen_file))
(ziinit.z_filefunc.opaque,
pathname,
(append == APPEND_STATUS_CREATE) ?
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_CREATE) :
(ZLIB_FILEFUNC_MODE_READ | ZLIB_FILEFUNC_MODE_WRITE | ZLIB_FILEFUNC_MODE_EXISTING));
if (ziinit.filestream == 0)
return 0;
ziinit.begin_pos = ZTELL(ziinit.z_filefunc,ziinit.filestream);
ziinit.in_opened_file_inzip = 0;
ziinit.ci.stream_initialised = 0;
ziinit.number_entry = 0;
ziinit.add_position_when_writting_offset = 0;
init_linkedlist(&(ziinit.central_dir));
zi = (zip_internal*)ALLOC(sizeof(zip_internal));
if (zi==0)
{
ZCLOSE(ziinit.z_filefunc,ziinit.filestream);
return 0;
}
/* now we add file in a zipfile */
# ifndef NO_ADDFILEINEXISTINGZIP
ziinit.globalcomment = 0;
if (append == APPEND_STATUS_ADDINZIP)
{
uLong byte_before_the_zipfile;/* byte before the zipfile, (>0 for sfx)*/
uLong size_central_dir; /* size of the central directory */
uLong offset_central_dir; /* offset of start of central directory */
uLong central_pos,uL;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry;
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
uLong size_comment;
central_pos = ziplocal_SearchCentralDir(&ziinit.z_filefunc,ziinit.filestream);
if (central_pos==0)
err=ZIP_ERRNO;
if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
err=ZIP_ERRNO;
/* the signature, already checked */
if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&uL)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of this disk */
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk)!=ZIP_OK)
err=ZIP_ERRNO;
/* number of the disk with the start of the central directory */
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_disk_with_CD)!=ZIP_OK)
err=ZIP_ERRNO;
/* total number of entries in the central dir on this disk */
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry)!=ZIP_OK)
err=ZIP_ERRNO;
/* total number of entries in the central dir */
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&number_entry_CD)!=ZIP_OK)
err=ZIP_ERRNO;
if ((number_entry_CD!=number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=ZIP_BADZIPFILE;
/* size of the central directory */
if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&size_central_dir)!=ZIP_OK)
err=ZIP_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (ziplocal_getLong(&ziinit.z_filefunc, ziinit.filestream,&offset_central_dir)!=ZIP_OK)
err=ZIP_ERRNO;
/* zipfile global comment length */
if (ziplocal_getShort(&ziinit.z_filefunc, ziinit.filestream,&size_comment)!=ZIP_OK)
err=ZIP_ERRNO;
if ((central_pos<offset_central_dir+size_central_dir) &&
(err==ZIP_OK))
err=ZIP_BADZIPFILE;
if (err!=ZIP_OK)
{
ZCLOSE(ziinit.z_filefunc, ziinit.filestream);
return 0;
}
if (size_comment>0)
{
ziinit.globalcomment = ALLOC(size_comment+1);
if (ziinit.globalcomment)
{
size_comment = ZREAD(ziinit.z_filefunc,
ziinit.filestream,
ziinit.globalcomment,
size_comment);
ziinit.globalcomment[size_comment]=0;
}
}
byte_before_the_zipfile = central_pos -
(offset_central_dir+size_central_dir);
ziinit.add_position_when_writting_offset = byte_before_the_zipfile;
{
uLong size_central_dir_to_read = size_central_dir;
size_t buf_size = SIZEDATA_INDATABLOCK;
void* buf_read = (void*)ALLOC(buf_size);
if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
offset_central_dir + byte_before_the_zipfile,
ZLIB_FILEFUNC_SEEK_SET) != 0)
err=ZIP_ERRNO;
while ((size_central_dir_to_read>0) && (err==ZIP_OK))
{
uLong read_this = SIZEDATA_INDATABLOCK;
if (read_this > size_central_dir_to_read)
read_this = size_central_dir_to_read;
if (ZREAD(ziinit.z_filefunc,
ziinit.filestream,
buf_read,
read_this) != read_this)
err=ZIP_ERRNO;
if (err==ZIP_OK)
err = add_data_in_datablock(&ziinit.central_dir,buf_read,
(uLong)read_this);
size_central_dir_to_read-=read_this;
}
TRYFREE(buf_read);
}
ziinit.begin_pos = byte_before_the_zipfile;
ziinit.number_entry = number_entry_CD;
if (ZSEEK(ziinit.z_filefunc, ziinit.filestream,
offset_central_dir+byte_before_the_zipfile,ZLIB_FILEFUNC_SEEK_SET)!=0)
err=ZIP_ERRNO;
}
if (globalcomment)
{
*globalcomment = ziinit.globalcomment;
}
# endif /* !NO_ADDFILEINEXISTINGZIP*/
if (err != ZIP_OK)
{
# ifndef NO_ADDFILEINEXISTINGZIP
TRYFREE(ziinit.globalcomment);
# endif /* !NO_ADDFILEINEXISTINGZIP*/
TRYFREE(zi);
return 0;
}
else
{
*zi = ziinit;
return (zipFile)zi;
}
}
//extern
unzFile ZEXPORT unzOpen2 (const char *path, zlib_filefunc_def* pzlib_filefunc_def)
{
unz_s *us = NULL; //heap_alloc - size is 180
unz_s *s = NULL;
uLong central_pos,uL;
uLong number_disk; /* number of the current dist, used for
spaning ZIP, unsupported, always 0*/
uLong number_disk_with_CD; /* number the the disk with central dir, used
for spaning ZIP, unsupported, always 0*/
uLong number_entry_CD; /* total number of entries in
the central dir
(same than number_entry on nospan) */
int err=UNZ_OK;
//printf("size of unz_s is %d\n", sizeof(unz_s));
if (unz_copyright[0]!=' ')
return NULL;
us = (unz_s*)ALLOC(sizeof(unz_s));
if (!us) {
return NULL;
}
if (pzlib_filefunc_def==NULL)
fill_fopen_filefunc(&us->z_filefunc);
else
us->z_filefunc = *pzlib_filefunc_def;
us->filestream= (*(us->z_filefunc.zopen_file))(us->z_filefunc.opaque,
path,
ZLIB_FILEFUNC_MODE_READ |
ZLIB_FILEFUNC_MODE_EXISTING);
if (us->filestream==NULL) {
TRYFREE(us);
return NULL;
}
central_pos = unzlocal_SearchCentralDir(&us->z_filefunc,us->filestream);
if (central_pos==0)
err=UNZ_ERRNO;
if (ZSEEK(us->z_filefunc, us->filestream,
central_pos,ZLIB_FILEFUNC_SEEK_SET)!=0)
err=UNZ_ERRNO;
/* the signature, already checked */
if (unzlocal_getLong(&us->z_filefunc, us->filestream,&uL)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of this disk */
if (unzlocal_getShort(&us->z_filefunc, us->filestream,&number_disk)!=UNZ_OK)
err=UNZ_ERRNO;
/* number of the disk with the start of the central directory */
if (unzlocal_getShort(&us->z_filefunc, us->filestream,&number_disk_with_CD)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir on this disk */
if (unzlocal_getShort(&us->z_filefunc, us->filestream,&us->gi.number_entry)!=UNZ_OK)
err=UNZ_ERRNO;
/* total number of entries in the central dir */
if (unzlocal_getShort(&us->z_filefunc, us->filestream,&number_entry_CD)!=UNZ_OK)
err=UNZ_ERRNO;
if ((number_entry_CD!=us->gi.number_entry) ||
(number_disk_with_CD!=0) ||
(number_disk!=0))
err=UNZ_BADZIPFILE;
/* size of the central directory */
if (unzlocal_getLong(&us->z_filefunc, us->filestream,&us->size_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* offset of start of central directory with respect to the
starting disk number */
if (unzlocal_getLong(&us->z_filefunc, us->filestream,&us->offset_central_dir)!=UNZ_OK)
err=UNZ_ERRNO;
/* zipfile comment length */
if (unzlocal_getShort(&us->z_filefunc, us->filestream,&us->gi.size_comment)!=UNZ_OK)
err=UNZ_ERRNO;
if ((central_pos<us->offset_central_dir+us->size_central_dir) &&
(err==UNZ_OK))
err=UNZ_BADZIPFILE;
if (err!=UNZ_OK)
{
ZCLOSE(us->z_filefunc, us->filestream);
TRYFREE(us);
return NULL;
}
us->byte_before_the_zipfile = central_pos -
(us->offset_central_dir+us->size_central_dir);
us->central_pos = central_pos;
us->pfile_in_zip_read = NULL;
us->encrypted = 0;
// Don't free "us". Return the memory allocated
//s=(unz_s*)ALLOC(sizeof(unz_s));
//*s=us;
s=us;
unzGoToFirstFile((unzFile)s);
return (unzFile)s;
}
extern int ZEXPORT zipClose (
zipFile file,
const char* global_comment)
{
zip_internal* zi;
int err = 0;
uLong size_centraldir = 0;
uLong centraldir_pos_inzip ;
uInt size_global_comment;
if (file == NULL)
return ZIP_PARAMERROR;
zi = (zip_internal*)file;
if (zi->in_opened_file_inzip == 1)
{
err = zipCloseFileInZip (file);
}
if (global_comment==NULL)
size_global_comment = 0;
else
size_global_comment = strlen(global_comment);
centraldir_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
if (err==ZIP_OK)
{
linkedlist_datablock_internal* ldi = zi->central_dir.first_block ;
while (ldi!=NULL)
{
if ((err==ZIP_OK) && (ldi->filled_in_this_block>0))
if (ZWRITE(zi->z_filefunc,zi->filestream,
ldi->data,ldi->filled_in_this_block)
!=ldi->filled_in_this_block )
err = ZIP_ERRNO;
size_centraldir += ldi->filled_in_this_block;
ldi = ldi->next_datablock;
}
}
free_datablock(zi->central_dir.first_block);
if (err==ZIP_OK) /* Magic End */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)ENDHEADERMAGIC,4);
if (err==ZIP_OK) /* number of this disk */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
if (err==ZIP_OK) /* number of the disk with the start of the central directory */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,2);
if (err==ZIP_OK) /* total number of entries in the central dir on this disk */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
if (err==ZIP_OK) /* total number of entries in the central dir */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->number_entry,2);
if (err==ZIP_OK) /* size of the central directory */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_centraldir,4);
if (err==ZIP_OK) /* offset of start of central directory with respect to the
starting disk number */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,
(uLong)(centraldir_pos_inzip - zi->add_position_when_writting_offset),4);
if (err==ZIP_OK) /* zipfile comment length */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_global_comment,2);
if ((err==ZIP_OK) && (size_global_comment>0))
if (ZWRITE(zi->z_filefunc,zi->filestream,
global_comment,size_global_comment) != size_global_comment)
err = ZIP_ERRNO;
if (ZCLOSE(zi->z_filefunc,zi->filestream) != 0)
if (err == ZIP_OK)
err = ZIP_ERRNO;
TRYFREE(zi);
return err;
}
/*
Open for reading data the current file in the zipfile.
If there is no error and the file is opened, the return value is UNZ_OK.
*/
extern int ZEXPORT unzOpenCurrentFile (unzFile file)
{
int err=UNZ_OK;
int Store;
uInt iSizeVar;
unz_s* s;
file_in_zip_read_info_s* pfile_in_zip_read_info;
uLong offset_local_extrafield; /* offset of the local extra field */
uInt size_local_extrafield; /* size of the local extra field */
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (!s->current_file_ok)
return UNZ_PARAMERROR;
if (s->pfile_in_zip_read != NULL)
unzCloseCurrentFile(file);
if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
&offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
return UNZ_BADZIPFILE;
pfile_in_zip_read_info = (file_in_zip_read_info_s*)
ALLOC(sizeof(file_in_zip_read_info_s));
if (pfile_in_zip_read_info==NULL)
return UNZ_INTERNALERROR;
pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
pfile_in_zip_read_info->pos_local_extrafield=0;
if (pfile_in_zip_read_info->read_buffer==NULL)
{
TRYFREE(pfile_in_zip_read_info);
return UNZ_INTERNALERROR;
}
pfile_in_zip_read_info->stream_initialised=0;
if ((s->cur_file_info.compression_method!=0) &&
(s->cur_file_info.compression_method!=Z_DEFLATED))
err=UNZ_BADZIPFILE;
Store = s->cur_file_info.compression_method==0;
pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
pfile_in_zip_read_info->crc32=0;
pfile_in_zip_read_info->compression_method =
s->cur_file_info.compression_method;
pfile_in_zip_read_info->file=s->file;
pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
pfile_in_zip_read_info->stream.total_out = 0;
if (!Store)
{
pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
pfile_in_zip_read_info->stream.zfree = (free_func)0;
pfile_in_zip_read_info->stream.opaque = (voidpf)0;
err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
if (err == Z_OK)
pfile_in_zip_read_info->stream_initialised=1;
/* windowBits is passed < 0 to tell that there is no zlib header.
* Note that in this case inflate *requires* an extra "dummy" byte
* after the compressed stream in order to complete decompression and
* return Z_STREAM_END.
* In unzip, i don't wait absolutely Z_STREAM_END because I known the
* size of both compressed and uncompressed data
*/
}
pfile_in_zip_read_info->rest_read_compressed =
s->cur_file_info.compressed_size ;
pfile_in_zip_read_info->rest_read_uncompressed =
s->cur_file_info.uncompressed_size ;
pfile_in_zip_read_info->pos_in_zipfile =
s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
iSizeVar;
pfile_in_zip_read_info->stream.avail_in = (uInt)0;
s->pfile_in_zip_read = pfile_in_zip_read_info;
return UNZ_OK;
}
/*
Open for reading data the current file in the zipfile.
If there is no error and the file is opened, the return value is UNZ_OK.
*/
int ZEXPORT unzOpenCurrentFile3 (
unzFile file,
int* method,
int* level,
int raw,
const char* password)
{
int err=UNZ_OK;
uInt iSizeVar;
unz_s* s;
file_in_zip_read_info_s* pfile_in_zip_read_info;
uLong offset_local_extrafield; /* offset of the local extra field */
uInt size_local_extrafield; /* size of the local extra field */
# ifndef NOUNCRYPT
char source[12];
# else
if (password != NULL)
return UNZ_PARAMERROR;
# endif
if (file==NULL)
return UNZ_PARAMERROR;
s=(unz_s*)file;
if (!s->current_file_ok)
return UNZ_PARAMERROR;
if (s->pfile_in_zip_read != NULL)
unzCloseCurrentFile(file);
if (unzlocal_CheckCurrentFileCoherencyHeader(s,&iSizeVar,
&offset_local_extrafield,&size_local_extrafield)!=UNZ_OK)
return UNZ_BADZIPFILE;
pfile_in_zip_read_info = (file_in_zip_read_info_s*)
ALLOC(sizeof(file_in_zip_read_info_s));
if (pfile_in_zip_read_info==NULL)
return UNZ_INTERNALERROR;
pfile_in_zip_read_info->read_buffer=(char*)ALLOC(UNZ_BUFSIZE);
pfile_in_zip_read_info->offset_local_extrafield = offset_local_extrafield;
pfile_in_zip_read_info->size_local_extrafield = size_local_extrafield;
pfile_in_zip_read_info->pos_local_extrafield=0;
pfile_in_zip_read_info->raw=raw;
if (pfile_in_zip_read_info->read_buffer==NULL)
{
TRYFREE(pfile_in_zip_read_info);
return UNZ_INTERNALERROR;
}
pfile_in_zip_read_info->stream_initialised=0;
if (method!=NULL)
*method = (int)s->cur_file_info.compression_method;
if (level!=NULL)
{
*level = 6;
switch (s->cur_file_info.flag & 0x06)
{
case 6 : *level = 1; break;
case 4 : *level = 2; break;
case 2 : *level = 9; break;
}
}
if ((s->cur_file_info.compression_method!=0) &&
(s->cur_file_info.compression_method!=Z_DEFLATED))
err=UNZ_BADZIPFILE;
pfile_in_zip_read_info->crc32_wait=s->cur_file_info.crc;
pfile_in_zip_read_info->crc32=0;
pfile_in_zip_read_info->compression_method =
s->cur_file_info.compression_method;
pfile_in_zip_read_info->filestream=s->filestream;
pfile_in_zip_read_info->z_filefunc=s->z_filefunc;
pfile_in_zip_read_info->byte_before_the_zipfile=s->byte_before_the_zipfile;
pfile_in_zip_read_info->stream.total_out = 0;
if ((s->cur_file_info.compression_method==Z_DEFLATED) &&
(!raw))
{
pfile_in_zip_read_info->stream.zalloc = (alloc_func)0;
pfile_in_zip_read_info->stream.zfree = (free_func)0;
pfile_in_zip_read_info->stream.opaque = (voidpf)0;
pfile_in_zip_read_info->stream.next_in = (Bytef*)0;
pfile_in_zip_read_info->stream.avail_in = 0;
err=inflateInit2(&pfile_in_zip_read_info->stream, -MAX_WBITS);
if (err == Z_OK)
pfile_in_zip_read_info->stream_initialised=1;
else
{
TRYFREE(pfile_in_zip_read_info);
return err;
}
/* windowBits is passed < 0 to tell that there is no zlib header.
* Note that in this case inflate *requires* an extra "dummy" byte
* after the compressed stream in order to complete decompression and
* return Z_STREAM_END.
* In unzip, i don't wait absolutely Z_STREAM_END because I known the
* size of both compressed and uncompressed data
*/
}
pfile_in_zip_read_info->rest_read_compressed =
s->cur_file_info.compressed_size ;
pfile_in_zip_read_info->rest_read_uncompressed =
s->cur_file_info.uncompressed_size ;
pfile_in_zip_read_info->pos_in_zipfile =
s->cur_file_info_internal.offset_curfile + SIZEZIPLOCALHEADER +
iSizeVar;
pfile_in_zip_read_info->stream.avail_in = (uInt)0;
s->pfile_in_zip_read = pfile_in_zip_read_info;
# ifndef NOUNCRYPT
if (password != NULL)
{
int i;
s->pcrc_32_tab = get_crc_table();
init_keys(password,s->keys,s->pcrc_32_tab);
if (ZSEEK(s->z_filefunc, s->filestream,
s->pfile_in_zip_read->pos_in_zipfile +
s->pfile_in_zip_read->byte_before_the_zipfile,
SEEK_SET)!=0)
return UNZ_INTERNALERROR;
if(ZREAD(s->z_filefunc, s->filestream,source, 12)<12)
return UNZ_INTERNALERROR;
for (i = 0; i<12; i++)
zdecode(s->keys,s->pcrc_32_tab,source[i]);
s->pfile_in_zip_read->pos_in_zipfile+=12;
s->encrypted=1;
}
# endif
return UNZ_OK;
}
