1 | <?php
|
---|
2 |
|
---|
3 | /**
|
---|
4 | * @author bouchon
|
---|
5 | * @link http://dev.maxg.info
|
---|
6 | * @link http://forum.maxg.info
|
---|
7 | *
|
---|
8 | * Modified for Dokuwiki
|
---|
9 | * @author Christopher Smith <[email protected]>
|
---|
10 | */
|
---|
11 | class ZipLib {
|
---|
12 |
|
---|
13 | var $datasec;
|
---|
14 | var $ctrl_dir = array();
|
---|
15 | var $eof_ctrl_dir = "\x50\x4b\x05\x06\x00\x00\x00\x00";
|
---|
16 | var $old_offset = 0;
|
---|
17 | var $dirs = Array(".");
|
---|
18 |
|
---|
19 | function get_List($zip_name) {
|
---|
20 | $zip = @fopen($zip_name, 'rb');
|
---|
21 | if(!$zip) return(0);
|
---|
22 | $centd = $this->ReadCentralDir($zip,$zip_name);
|
---|
23 |
|
---|
24 | @rewind($zip);
|
---|
25 | @fseek($zip, $centd['offset']);
|
---|
26 |
|
---|
27 | for ($i=0; $i<$centd['entries']; $i++) {
|
---|
28 | $header = $this->ReadCentralFileHeaders($zip);
|
---|
29 | $header['index'] = $i;
|
---|
30 |
|
---|
31 | $info['filename'] = $header['filename'];
|
---|
32 | $info['stored_filename'] = $header['stored_filename'];
|
---|
33 | $info['size'] = $header['size'];
|
---|
34 | $info['compressed_size'] = $header['compressed_size'];
|
---|
35 | $info['crc'] = strtoupper(dechex( $header['crc'] ));
|
---|
36 | $info['mtime'] = $header['mtime'];
|
---|
37 | $info['comment'] = $header['comment'];
|
---|
38 | $info['folder'] = ($header['external']==0x41FF0010||$header['external']==16)?1:0;
|
---|
39 | $info['index'] = $header['index'];
|
---|
40 | $info['status'] = $header['status'];
|
---|
41 | $ret[]=$info;
|
---|
42 |
|
---|
43 | unset($header);
|
---|
44 | }
|
---|
45 | return $ret;
|
---|
46 | }
|
---|
47 |
|
---|
48 | function Add($files,$compact) {
|
---|
49 | if(!is_array($files[0])) $files=Array($files);
|
---|
50 |
|
---|
51 | for($i=0;$files[$i];$i++){
|
---|
52 | $fn = $files[$i];
|
---|
53 | if(!in_Array(dirname($fn[0]),$this->dirs))
|
---|
54 | $this->add_Dir(dirname($fn[0]));
|
---|
55 | if(basename($fn[0]))
|
---|
56 | $ret[basename($fn[0])]=$this->add_File($fn[1],$fn[0],$compact);
|
---|
57 | }
|
---|
58 | return $ret;
|
---|
59 | }
|
---|
60 |
|
---|
61 | /**
|
---|
62 | * Zips recursively the $folder directory, from the $basedir directory
|
---|
63 | */
|
---|
64 | function Compress($folder, $basedir=null, $parent=null) {
|
---|
65 | $full_path = $basedir."/".$parent.$folder;
|
---|
66 | $zip_path = $parent.$folder;
|
---|
67 | if ($zip_path) {
|
---|
68 | $zip_path .= "/";
|
---|
69 | $this->add_dir($zip_path);
|
---|
70 | }
|
---|
71 | $dir = new DirectoryIterator($full_path);
|
---|
72 | foreach($dir as $file) {
|
---|
73 | if(!$file->isDot()) {
|
---|
74 | $filename = $file->getFilename();
|
---|
75 | if($file->isDir()) {
|
---|
76 | $this->Compress($filename, $basedir, $zip_path);
|
---|
77 | } else {
|
---|
78 | $content = join('', file($full_path.'/'.$filename));
|
---|
79 | $this->add_File($content, $zip_path.$filename);
|
---|
80 | }
|
---|
81 | }
|
---|
82 | }
|
---|
83 | }
|
---|
84 |
|
---|
85 | /**
|
---|
86 | * Returns the Zip file
|
---|
87 | */
|
---|
88 | function get_file() {
|
---|
89 | $data = implode('', $this -> datasec);
|
---|
90 | $ctrldir = implode('', $this -> ctrl_dir);
|
---|
91 |
|
---|
92 | return $data . $ctrldir . $this -> eof_ctrl_dir .
|
---|
93 | pack('v', count($this->ctrl_dir)).pack('v', count($this->ctrl_dir)).
|
---|
94 | pack('V', strlen($ctrldir)) . pack('V', strlen($data)) . "\x00\x00";
|
---|
95 | }
|
---|
96 |
|
---|
97 | function add_dir($name) {
|
---|
98 | $name = str_replace("\\", "/", $name);
|
---|
99 | $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
|
---|
100 |
|
---|
101 | $fr .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
|
---|
102 | $fr .= pack("v", 0 ).$name.pack("V", 0).pack("V", 0).pack("V", 0);
|
---|
103 | $this -> datasec[] = $fr;
|
---|
104 |
|
---|
105 | $new_offset = strlen(implode("", $this->datasec));
|
---|
106 |
|
---|
107 | $cdrec = "\x50\x4b\x01\x02\x00\x00\x0a\x00\x00\x00\x00\x00\x00\x00\x00\x00";
|
---|
108 | $cdrec .= pack("V",0).pack("V",0).pack("V",0).pack("v", strlen($name) );
|
---|
109 | $cdrec .= pack("v", 0 ).pack("v", 0 ).pack("v", 0 ).pack("v", 0 );
|
---|
110 | $ext = "\xff\xff\xff\xff";
|
---|
111 | $cdrec .= pack("V", 16 ).pack("V", $this -> old_offset ).$name;
|
---|
112 |
|
---|
113 | $this -> ctrl_dir[] = $cdrec;
|
---|
114 | $this -> old_offset = $new_offset;
|
---|
115 | $this -> dirs[] = $name;
|
---|
116 | }
|
---|
117 |
|
---|
118 | /**
|
---|
119 | * Add a file named $name from a string $data
|
---|
120 | */
|
---|
121 | function add_File($data, $name, $compact = 1) {
|
---|
122 | $name = str_replace('\\', '/', $name);
|
---|
123 | $dtime = dechex($this->DosTime());
|
---|
124 |
|
---|
125 | $hexdtime = pack('H*',$dtime[6].$dtime[7].
|
---|
126 | $dtime[4].$dtime[5].
|
---|
127 | $dtime[2].$dtime[3].
|
---|
128 | $dtime[0].$dtime[1]);
|
---|
129 |
|
---|
130 | if($compact){
|
---|
131 | $fr = "\x50\x4b\x03\x04\x14\x00\x00\x00\x08\x00".$hexdtime;
|
---|
132 | }else{
|
---|
133 | $fr = "\x50\x4b\x03\x04\x0a\x00\x00\x00\x00\x00".$hexdtime;
|
---|
134 | }
|
---|
135 | $unc_len = strlen($data);
|
---|
136 | $crc = crc32($data);
|
---|
137 |
|
---|
138 | if($compact){
|
---|
139 | $zdata = gzcompress($data);
|
---|
140 | $c_len = strlen($zdata);
|
---|
141 | $zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2);
|
---|
142 | }else{
|
---|
143 | $zdata = $data;
|
---|
144 | }
|
---|
145 | $c_len=strlen($zdata);
|
---|
146 | $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
|
---|
147 | $fr .= pack('v', strlen($name)).pack('v', 0).$name.$zdata;
|
---|
148 |
|
---|
149 | $fr .= pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
|
---|
150 |
|
---|
151 | $this -> datasec[] = $fr;
|
---|
152 | $new_offset = strlen(implode('', $this->datasec));
|
---|
153 | if($compact) {
|
---|
154 | $cdrec = "\x50\x4b\x01\x02\x00\x00\x14\x00\x00\x00\x08\x00";
|
---|
155 | } else {
|
---|
156 | $cdrec = "\x50\x4b\x01\x02\x14\x00\x0a\x00\x00\x00\x00\x00";
|
---|
157 | }
|
---|
158 | $cdrec .= $hexdtime.pack('V', $crc).pack('V', $c_len).pack('V', $unc_len);
|
---|
159 | $cdrec .= pack('v', strlen($name) ).pack('v', 0 ).pack('v', 0 );
|
---|
160 | $cdrec .= pack('v', 0 ).pack('v', 0 ).pack('V', 32 );
|
---|
161 | $cdrec .= pack('V', $this -> old_offset );
|
---|
162 |
|
---|
163 | $this -> old_offset = $new_offset;
|
---|
164 | $cdrec .= $name;
|
---|
165 | $this -> ctrl_dir[] = $cdrec;
|
---|
166 | return true;
|
---|
167 | }
|
---|
168 |
|
---|
169 | function DosTime() {
|
---|
170 | $timearray = getdate();
|
---|
171 | if ($timearray['year'] < 1980) {
|
---|
172 | $timearray['year'] = 1980;
|
---|
173 | $timearray['mon'] = 1;
|
---|
174 | $timearray['mday'] = 1;
|
---|
175 | $timearray['hours'] = 0;
|
---|
176 | $timearray['minutes'] = 0;
|
---|
177 | $timearray['seconds'] = 0;
|
---|
178 | }
|
---|
179 | return (($timearray['year'] - 1980) << 25) |
|
---|
180 | ($timearray['mon'] << 21) |
|
---|
181 | ($timearray['mday'] << 16) |
|
---|
182 | ($timearray['hours'] << 11) |
|
---|
183 | ($timearray['minutes'] << 5) |
|
---|
184 | ($timearray['seconds'] >> 1);
|
---|
185 | }
|
---|
186 |
|
---|
187 | /**
|
---|
188 | * Extract a zip file $zn to the $to directory
|
---|
189 | */
|
---|
190 | function Extract ( $zn, $to, $index = Array(-1) ) {
|
---|
191 | if(!@is_dir($to)) $this->_mkdir($to);
|
---|
192 | $ok = 0;
|
---|
193 | $zip = @fopen($zn,'rb');
|
---|
194 | if(!$zip) return(-1);
|
---|
195 | $cdir = $this->ReadCentralDir($zip,$zn);
|
---|
196 | $pos_entry = $cdir['offset'];
|
---|
197 |
|
---|
198 | if(!is_array($index)){
|
---|
199 | $index = array($index);
|
---|
200 | }
|
---|
201 | for($i=0; isset($index[$i]);$i++){
|
---|
202 | if(intval($index[$i])!=$index[$i]||$index[$i]>$cdir['entries'])
|
---|
203 | return(-1);
|
---|
204 | }
|
---|
205 |
|
---|
206 | for ($i=0; $i<$cdir['entries']; $i++) {
|
---|
207 | @fseek($zip, $pos_entry);
|
---|
208 | $header = $this->ReadCentralFileHeaders($zip);
|
---|
209 | $header['index'] = $i;
|
---|
210 | $pos_entry = ftell($zip);
|
---|
211 | @rewind($zip);
|
---|
212 | fseek($zip, $header['offset']);
|
---|
213 | if(in_array("-1",$index)||in_array($i,$index)){
|
---|
214 | $stat[$header['filename']]=$this->ExtractFile($header, $to, $zip);
|
---|
215 | }
|
---|
216 | }
|
---|
217 | fclose($zip);
|
---|
218 | return $stat;
|
---|
219 | }
|
---|
220 |
|
---|
221 | function ReadFileHeader($zip, $header) {
|
---|
222 | $binary_data = fread($zip, 30);
|
---|
223 | $data = unpack('vchk/vid/vversion/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len', $binary_data);
|
---|
224 |
|
---|
225 | $header['filename'] = fread($zip, $data['filename_len']);
|
---|
226 | if ($data['extra_len'] != 0) {
|
---|
227 | $header['extra'] = fread($zip, $data['extra_len']);
|
---|
228 | } else {
|
---|
229 | $header['extra'] = '';
|
---|
230 | }
|
---|
231 |
|
---|
232 | $header['compression'] = $data['compression'];
|
---|
233 | foreach (array('size','compressed_size','crc') as $hd) { // On ODT files, these headers are 0. Keep the previous value.
|
---|
234 | if ($data[$hd] != 0) $header[$hd] = $data[$hd];
|
---|
235 | }
|
---|
236 | $header['flag'] = $data['flag'];
|
---|
237 | $header['mdate'] = $data['mdate'];
|
---|
238 | $header['mtime'] = $data['mtime'];
|
---|
239 |
|
---|
240 | if ($header['mdate'] && $header['mtime']){
|
---|
241 | $hour = ($header['mtime']&0xF800)>>11;
|
---|
242 | $minute = ($header['mtime']&0x07E0)>>5;
|
---|
243 | $seconde = ($header['mtime']&0x001F)*2;
|
---|
244 | $year = (($header['mdate']&0xFE00)>>9)+1980;
|
---|
245 | $month = ($header['mdate']&0x01E0)>>5;
|
---|
246 | $day = $header['mdate']&0x001F;
|
---|
247 | $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
|
---|
248 | } else {
|
---|
249 | $header['mtime'] = time();
|
---|
250 | }
|
---|
251 |
|
---|
252 | $header['stored_filename'] = $header['filename'];
|
---|
253 | $header['status'] = "ok";
|
---|
254 | return $header;
|
---|
255 | }
|
---|
256 |
|
---|
257 | function ReadCentralFileHeaders($zip){
|
---|
258 | $binary_data = fread($zip, 46);
|
---|
259 | $header = unpack('vchkid/vid/vversion/vversion_extracted/vflag/vcompression/vmtime/vmdate/Vcrc/Vcompressed_size/Vsize/vfilename_len/vextra_len/vcomment_len/vdisk/vinternal/Vexternal/Voffset', $binary_data);
|
---|
260 |
|
---|
261 | if ($header['filename_len'] != 0){
|
---|
262 | $header['filename'] = fread($zip,$header['filename_len']);
|
---|
263 | }else{
|
---|
264 | $header['filename'] = '';
|
---|
265 | }
|
---|
266 |
|
---|
267 | if ($header['extra_len'] != 0){
|
---|
268 | $header['extra'] = fread($zip, $header['extra_len']);
|
---|
269 | }else{
|
---|
270 | $header['extra'] = '';
|
---|
271 | }
|
---|
272 |
|
---|
273 | if ($header['comment_len'] != 0){
|
---|
274 | $header['comment'] = fread($zip, $header['comment_len']);
|
---|
275 | }else{
|
---|
276 | $header['comment'] = '';
|
---|
277 | }
|
---|
278 |
|
---|
279 | if ($header['mdate'] && $header['mtime']) {
|
---|
280 | $hour = ($header['mtime'] & 0xF800) >> 11;
|
---|
281 | $minute = ($header['mtime'] & 0x07E0) >> 5;
|
---|
282 | $seconde = ($header['mtime'] & 0x001F)*2;
|
---|
283 | $year = (($header['mdate'] & 0xFE00) >> 9) + 1980;
|
---|
284 | $month = ($header['mdate'] & 0x01E0) >> 5;
|
---|
285 | $day = $header['mdate'] & 0x001F;
|
---|
286 | $header['mtime'] = mktime($hour, $minute, $seconde, $month, $day, $year);
|
---|
287 | } else {
|
---|
288 | $header['mtime'] = time();
|
---|
289 | }
|
---|
290 |
|
---|
291 | $header['stored_filename'] = $header['filename'];
|
---|
292 | $header['status'] = 'ok';
|
---|
293 | if (substr($header['filename'], -1) == '/') $header['external'] = 0x41FF0010;
|
---|
294 |
|
---|
295 | return $header;
|
---|
296 | }
|
---|
297 |
|
---|
298 | function ReadCentralDir($zip,$zip_name) {
|
---|
299 | $size = filesize($zip_name);
|
---|
300 | if ($size < 277){
|
---|
301 | $maximum_size = $size;
|
---|
302 | } else {
|
---|
303 | $maximum_size=277;
|
---|
304 | }
|
---|
305 |
|
---|
306 | @fseek($zip, $size-$maximum_size);
|
---|
307 | $pos = ftell($zip);
|
---|
308 | $bytes = 0x00000000;
|
---|
309 |
|
---|
310 | while ($pos < $size) {
|
---|
311 | $byte = @fread($zip, 1);
|
---|
312 | $bytes=(($bytes << 8) & 0xFFFFFFFF) | Ord($byte);
|
---|
313 | if ($bytes == 0x504b0506){
|
---|
314 | $pos++;
|
---|
315 | break;
|
---|
316 | }
|
---|
317 | $pos++;
|
---|
318 | }
|
---|
319 |
|
---|
320 | $data=unpack('vdisk/vdisk_start/vdisk_entries/ventries/Vsize/Voffset/vcomment_size',
|
---|
321 | fread($zip, 18));
|
---|
322 |
|
---|
323 | if ($data['comment_size'] != 0){
|
---|
324 | $centd['comment'] = fread($zip, $data['comment_size']);
|
---|
325 | } else {
|
---|
326 | $centd['comment'] = '';
|
---|
327 | }
|
---|
328 | $centd['entries'] = $data['entries'];
|
---|
329 | $centd['disk_entries'] = $data['disk_entries'];
|
---|
330 | $centd['offset'] = $data['offset'];
|
---|
331 | $centd['disk_start'] = $data['disk_start'];
|
---|
332 | $centd['size'] = $data['size'];
|
---|
333 | $centd['disk'] = $data['disk'];
|
---|
334 | return $centd;
|
---|
335 | }
|
---|
336 |
|
---|
337 | function ExtractFile($header,$to,$zip) {
|
---|
338 | $header = $this->readfileheader($zip, $header);
|
---|
339 |
|
---|
340 | if(substr($to,-1)!="/") $to.="/";
|
---|
341 | if(substr($header['filename'],-1)=="/") {
|
---|
342 | $this->_mkdir($to.$header['filename']);
|
---|
343 | return +2;
|
---|
344 | }
|
---|
345 |
|
---|
346 | if (!$this->_mkdir($to.dirname($header['filename']))) return (-1);
|
---|
347 |
|
---|
348 | if (!array_key_exists("external", $header) || (!($header['external']==0x41FF0010)&&!($header['external']==16))) {
|
---|
349 | if ($header['compression']==0) {
|
---|
350 | $fp = @fopen($to.$header['filename'], 'wb');
|
---|
351 | if(!$fp) return(-1);
|
---|
352 | $size = $header['compressed_size'];
|
---|
353 |
|
---|
354 | while ($size != 0) {
|
---|
355 | $read_size = ($size < 2048 ? $size : 2048);
|
---|
356 | $buffer = fread($zip, $read_size);
|
---|
357 | $binary_data = pack('a'.$read_size, $buffer);
|
---|
358 | @fwrite($fp, $binary_data, $read_size);
|
---|
359 | $size -= $read_size;
|
---|
360 | }
|
---|
361 | fclose($fp);
|
---|
362 | touch($to.$header['filename'], $header['mtime']);
|
---|
363 |
|
---|
364 | }else{
|
---|
365 | if (!is_dir(dirname($to.$header['filename']))) $this->_mkdir(dirname($to.$header['filename']));
|
---|
366 | $fp = fopen($to.$header['filename'].'.gz','wb');
|
---|
367 | if(!$fp) return(-1);
|
---|
368 | $binary_data = pack('va1a1Va1a1', 0x8b1f, Chr($header['compression']),
|
---|
369 | Chr(0x00), time(), Chr(0x00), Chr(3));
|
---|
370 |
|
---|
371 | fwrite($fp, $binary_data, 10);
|
---|
372 | $size = $header['compressed_size'];
|
---|
373 |
|
---|
374 | while ($size != 0) {
|
---|
375 | $read_size = ($size < 1024 ? $size : 1024);
|
---|
376 | $buffer = fread($zip, $read_size);
|
---|
377 | $binary_data = pack('a'.$read_size, $buffer);
|
---|
378 | @fwrite($fp, $binary_data, $read_size);
|
---|
379 | $size -= $read_size;
|
---|
380 | }
|
---|
381 |
|
---|
382 | $binary_data = pack('VV', $header['crc'], $header['size']);
|
---|
383 | fwrite($fp, $binary_data,8);
|
---|
384 | fclose($fp);
|
---|
385 |
|
---|
386 | $gzp = @gzopen($to.$header['filename'].'.gz','rb');
|
---|
387 | if(!$gzp){
|
---|
388 | @gzclose($gzp);
|
---|
389 | @unlink($to.$header['filename']);
|
---|
390 | die("Archive is compressed whereas ZLIB is not enabled.");
|
---|
391 | }
|
---|
392 | $fp = @fopen($to.$header['filename'],'wb');
|
---|
393 | if(!$fp) return(-1);
|
---|
394 | $size = $header['size'];
|
---|
395 |
|
---|
396 | while ($size != 0) {
|
---|
397 | $read_size = ($size < 2048 ? $size : 2048);
|
---|
398 | $buffer = gzread($gzp, $read_size);
|
---|
399 | $binary_data = pack('a'.$read_size, $buffer);
|
---|
400 | @fwrite($fp, $binary_data, $read_size);
|
---|
401 | $size -= $read_size;
|
---|
402 | }
|
---|
403 | fclose($fp);
|
---|
404 | gzclose($gzp);
|
---|
405 |
|
---|
406 | touch($to.$header['filename'], $header['mtime']);
|
---|
407 | @unlink($to.$header['filename'].'.gz');
|
---|
408 | }
|
---|
409 | }
|
---|
410 | return true;
|
---|
411 | }
|
---|
412 |
|
---|
413 | /**
|
---|
414 | * centralize mkdir calls and use dokuwiki io functions
|
---|
415 | *
|
---|
416 | * @author Christopher Smith <[email protected]>
|
---|
417 | */
|
---|
418 | function _mkdir($d) {
|
---|
419 | return io_mkdir_p($d);
|
---|
420 | }
|
---|
421 |
|
---|
422 |
|
---|
423 | function ExtractStr($zn, $name) {
|
---|
424 | $ok = 0;
|
---|
425 | $zip = @fopen($zn,'rb');
|
---|
426 | if(!$zip) return(null);
|
---|
427 | $cdir = $this->ReadCentralDir($zip,$zn);
|
---|
428 | $pos_entry = $cdir['offset'];
|
---|
429 |
|
---|
430 | for ($i=0; $i<$cdir['entries']; $i++) {
|
---|
431 | @fseek($zip, $pos_entry);
|
---|
432 | $header = $this->ReadCentralFileHeaders($zip);
|
---|
433 | $header['index'] = $i;
|
---|
434 | $pos_entry = ftell($zip);
|
---|
435 | @rewind($zip);
|
---|
436 | fseek($zip, $header['offset']);
|
---|
437 | if ($name == $header['stored_filename'] || $name == $header['filename']) {
|
---|
438 | $str = $this->ExtractStrFile($header, $zip);
|
---|
439 | fclose($zip);
|
---|
440 | return $str;
|
---|
441 | }
|
---|
442 |
|
---|
443 | }
|
---|
444 | fclose($zip);
|
---|
445 | return null;
|
---|
446 | }
|
---|
447 |
|
---|
448 | function ExtractStrFile($header,$zip) {
|
---|
449 | $hdr = $this->readfileheader($zip);
|
---|
450 | $binary_data = '';
|
---|
451 | if (!($header['external']==0x41FF0010) && !($header['external']==16)) {
|
---|
452 | if ($header['compression']==0) {
|
---|
453 | while ($size != 0) {
|
---|
454 | $read_size = ($size < 2048 ? $size : 2048);
|
---|
455 | $buffer = fread($zip, $read_size);
|
---|
456 | $binary_data .= pack('a'.$read_size, $buffer);
|
---|
457 | $size -= $read_size;
|
---|
458 | }
|
---|
459 | return $binary_data;
|
---|
460 | } else {
|
---|
461 | $size = $header['compressed_size'];
|
---|
462 | if ($size == 0) {
|
---|
463 | return '';
|
---|
464 | }
|
---|
465 | //Just in case
|
---|
466 | if ($size > ($this->_ret_bytes(ini_get('memory_limit'))/2)) {
|
---|
467 | die("Compressed file is to huge to be uncompress in memory.");
|
---|
468 | }
|
---|
469 | while ($size != 0)
|
---|
470 | {
|
---|
471 | $read_size = ($size < 2048 ? $size : 2048);
|
---|
472 | $buffer = fread($zip, $read_size);
|
---|
473 | $binary_data .= pack('a'.$read_size, $buffer);
|
---|
474 | $size -= $read_size;
|
---|
475 | }
|
---|
476 | $str = gzinflate($binary_data, $header['size']);
|
---|
477 | if ($header['crc'] == crc32($str)) {
|
---|
478 | return $str;
|
---|
479 | } else {
|
---|
480 | die("Crc Error");
|
---|
481 | }
|
---|
482 | }
|
---|
483 | }
|
---|
484 | return null;
|
---|
485 | }
|
---|
486 |
|
---|
487 | function _ret_bytes($val) {
|
---|
488 | $val = trim($val);
|
---|
489 | $last = $val{strlen($val)-1};
|
---|
490 | switch($last) {
|
---|
491 | case 'k':
|
---|
492 | case 'K':
|
---|
493 | return (int) $val * 1024;
|
---|
494 | break;
|
---|
495 | case 'm':
|
---|
496 | case 'M':
|
---|
497 | return (int) $val * 1048576;
|
---|
498 | break;
|
---|
499 | default:
|
---|
500 | return $val;
|
---|
501 | }
|
---|
502 | }
|
---|
503 | }
|
---|
504 |
|
---|