/*
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;
}
extern MINIZIP_EXPORT int zipOpenNewFileInZip3 (zipFile file,const char* filename,const zip_fileinfo* zipfi,
const void* extrafield_local,uInt size_extrafield_local,
const void* extrafield_global,uInt size_extrafield_global,
const char* comment,int method,int level,int raw,
int windowBits,int memLevel,int strategy,
const char* password,uLong crcForCrypting)
{
zip_internal* zi;
uInt size_filename;
uInt size_comment;
uInt i;
int err = ZIP_OK;
# ifdef NOCRYPT
if (password != 0)
return ZIP_PARAMERROR;
# endif
if (file == 0)
return ZIP_PARAMERROR;
if ((method!=0) && (method!=Z_DEFLATED))
return ZIP_PARAMERROR;
zi = (zip_internal*)file;
if (zi->in_opened_file_inzip == 1)
{
err = zipCloseFileInZip (file);
if (err != ZIP_OK)
return err;
}
if (filename==0)
filename="-";
if (comment==0)
size_comment = 0;
else
size_comment = (uInt)strlen(comment);
size_filename = (uInt)strlen(filename);
if (zipfi == 0)
zi->ci.dosDate = 0;
else
{
if (zipfi->dosDate != 0)
zi->ci.dosDate = zipfi->dosDate;
else zi->ci.dosDate = ziplocal_TmzDateToDosDate(&zipfi->tmz_date,zipfi->dosDate);
}
zi->ci.flag = 0;
if ((level==8) || (level==9))
zi->ci.flag |= 2;
if ((level==2))
zi->ci.flag |= 4;
if ((level==1))
zi->ci.flag |= 6;
if (password != 0)
zi->ci.flag |= 1;
zi->ci.crc32 = 0;
zi->ci.method = method;
zi->ci.encrypt = 0;
zi->ci.stream_initialised = 0;
zi->ci.pos_in_buffered_data = 0;
zi->ci.raw = raw;
zi->ci.pos_local_header = ZTELL(zi->z_filefunc,zi->filestream) ;
zi->ci.size_centralheader = SIZECENTRALHEADER + size_filename +
size_extrafield_global + size_comment;
zi->ci.central_header = (char*)ALLOC((uInt)zi->ci.size_centralheader);
ziplocal_putValue_inmemory(zi->ci.central_header,(uLong)CENTRALHEADERMAGIC,4);
/* version info */
ziplocal_putValue_inmemory(zi->ci.central_header+4,(uLong)VERSIONMADEBY,2);
ziplocal_putValue_inmemory(zi->ci.central_header+6,(uLong)20,2);
ziplocal_putValue_inmemory(zi->ci.central_header+8,(uLong)zi->ci.flag,2);
ziplocal_putValue_inmemory(zi->ci.central_header+10,(uLong)zi->ci.method,2);
ziplocal_putValue_inmemory(zi->ci.central_header+12,(uLong)zi->ci.dosDate,4);
ziplocal_putValue_inmemory(zi->ci.central_header+16,(uLong)0,4); /*crc*/
ziplocal_putValue_inmemory(zi->ci.central_header+20,(uLong)0,4); /*compr size*/
ziplocal_putValue_inmemory(zi->ci.central_header+24,(uLong)0,4); /*uncompr size*/
ziplocal_putValue_inmemory(zi->ci.central_header+28,(uLong)size_filename,2);
ziplocal_putValue_inmemory(zi->ci.central_header+30,(uLong)size_extrafield_global,2);
ziplocal_putValue_inmemory(zi->ci.central_header+32,(uLong)size_comment,2);
ziplocal_putValue_inmemory(zi->ci.central_header+34,(uLong)0,2); /*disk nm start*/
if (zipfi==0)
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)0,2);
else
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)zipfi->internal_fa,2);
if (zipfi==0)
ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)0,4);
else
ziplocal_putValue_inmemory(zi->ci.central_header+38,(uLong)zipfi->external_fa,4);
ziplocal_putValue_inmemory(zi->ci.central_header+42,(uLong)zi->ci.pos_local_header- zi->add_position_when_writting_offset,4);
for (i=0;i<size_filename;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+i) = *(filename+i);
for (i=0;i<size_extrafield_global;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+size_filename+i) =
*(((const char*)extrafield_global)+i);
for (i=0;i<size_comment;i++)
*(zi->ci.central_header+SIZECENTRALHEADER+size_filename+
size_extrafield_global+i) = *(comment+i);
if (zi->ci.central_header == 0)
return ZIP_INTERNALERROR;
/* write the local header */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)LOCALHEADERMAGIC,4);
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)20,2);/* version needed to extract */
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.flag,2);
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.method,2);
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)zi->ci.dosDate,4);
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* crc 32, unknown */
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* compressed size, unknown */
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)0,4); /* uncompressed size, unknown */
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_filename,2);
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,(uLong)size_extrafield_local,2);
if ((err==ZIP_OK) && (size_filename>0))
if (ZWRITE(zi->z_filefunc,zi->filestream,filename,size_filename)!=size_filename)
err = ZIP_ERRNO;
if ((err==ZIP_OK) && (size_extrafield_local>0))
if (ZWRITE(zi->z_filefunc,zi->filestream,extrafield_local,size_extrafield_local)
!=size_extrafield_local)
err = ZIP_ERRNO;
zi->ci.stream.avail_in = (uInt)0;
zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.stream.next_out = zi->ci.buffered_data;
zi->ci.stream.total_in = 0;
zi->ci.stream.total_out = 0;
if ((err==ZIP_OK) && (zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
{
zi->ci.stream.zalloc = (alloc_func)0;
zi->ci.stream.zfree = (free_func)0;
zi->ci.stream.opaque = (voidpf)0;
if (windowBits>0)
windowBits = -windowBits;
err = deflateInit2(&zi->ci.stream, level,
Z_DEFLATED, windowBits, memLevel, strategy);
if (err==Z_OK)
zi->ci.stream_initialised = 1;
}
# ifndef NOCRYPT
zi->ci.crypt_header_size = 0;
if ((err==Z_OK) && (password != 0))
{
unsigned char bufHead[RAND_HEAD_LEN];
unsigned int sizeHead;
zi->ci.encrypt = 1;
zi->ci.pcrc_32_tab = get_crc_table();
/*init_keys(password,zi->ci.keys,zi->ci.pcrc_32_tab);*/
sizeHead=crypthead(password,bufHead,RAND_HEAD_LEN,zi->ci.keys,zi->ci.pcrc_32_tab,crcForCrypting);
zi->ci.crypt_header_size = sizeHead;
if (ZWRITE(zi->z_filefunc,zi->filestream,bufHead,sizeHead) != sizeHead)
err = ZIP_ERRNO;
}
# endif
if (err==Z_OK)
zi->in_opened_file_inzip = 1;
return err;
}
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 int ZEXPORT zipCloseFileInZipRaw (
zipFile file,
uLong uncompressed_size,
uLong crc32)
{
zip_internal* zi;
uLong compressed_size;
int err=ZIP_OK;
if (file == NULL)
return ZIP_PARAMERROR;
zi = (zip_internal*)file;
if (zi->in_opened_file_inzip == 0)
return ZIP_PARAMERROR;
zi->ci.stream.avail_in = 0;
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
while (err==ZIP_OK)
{
uLong uTotalOutBefore;
if (zi->ci.stream.avail_out == 0)
{
if (zipFlushWriteBuffer(zi) == ZIP_ERRNO)
err = ZIP_ERRNO;
zi->ci.stream.avail_out = (uInt)Z_BUFSIZE;
zi->ci.stream.next_out = zi->ci.buffered_data;
}
uTotalOutBefore = zi->ci.stream.total_out;
err=deflate(&zi->ci.stream, Z_FINISH);
zi->ci.pos_in_buffered_data += (uInt)(zi->ci.stream.total_out - uTotalOutBefore) ;
}
if (err==Z_STREAM_END)
err=ZIP_OK; /* this is normal */
if ((zi->ci.pos_in_buffered_data>0) && (err==ZIP_OK))
if (zipFlushWriteBuffer(zi)==ZIP_ERRNO)
err = ZIP_ERRNO;
if ((zi->ci.method == Z_DEFLATED) && (!zi->ci.raw))
{
err=deflateEnd(&zi->ci.stream);
zi->ci.stream_initialised = 0;
}
if (!zi->ci.raw)
{
crc32 = (uLong)zi->ci.crc32;
uncompressed_size = (uLong)zi->ci.stream.total_in;
}
compressed_size = (uLong)zi->ci.stream.total_out;
# ifndef NOCRYPT
compressed_size += zi->ci.crypt_header_size;
# endif
ziplocal_putValue_inmemory(zi->ci.central_header+16,crc32,4); /*crc*/
ziplocal_putValue_inmemory(zi->ci.central_header+20,
compressed_size,4); /*compr size*/
if (zi->ci.stream.data_type == Z_ASCII)
ziplocal_putValue_inmemory(zi->ci.central_header+36,(uLong)Z_ASCII,2);
ziplocal_putValue_inmemory(zi->ci.central_header+24,
uncompressed_size,4); /*uncompr size*/
if (err==ZIP_OK)
err = add_data_in_datablock(&zi->central_dir,zi->ci.central_header,
(uLong)zi->ci.size_centralheader);
free(zi->ci.central_header);
if (err==ZIP_OK)
{
long cur_pos_inzip = ZTELL(zi->z_filefunc,zi->filestream);
if (ZSEEK(zi->z_filefunc,zi->filestream,
zi->ci.pos_local_header + 14,ZLIB_FILEFUNC_SEEK_SET)!=0)
err = ZIP_ERRNO;
if (err==ZIP_OK)
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,crc32,4); /* crc 32, unknown */
if (err==ZIP_OK) /* compressed size, unknown */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,compressed_size,4);
if (err==ZIP_OK) /* uncompressed size, unknown */
err = ziplocal_putValue(&zi->z_filefunc,zi->filestream,uncompressed_size,4);
if (ZSEEK(zi->z_filefunc,zi->filestream,
cur_pos_inzip,ZLIB_FILEFUNC_SEEK_SET)!=0)
err = ZIP_ERRNO;
}
zi->number_entry ++;
zi->in_opened_file_inzip = 0;
return err;
}
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;
}
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;
}
