root / branches / phpBB-3_0_0 / phpBB / includes / functions_compress.php
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| 1 | <?php
|
|---|---|
| 2 | /**
|
| 3 | * |
| 4 | * @package phpBB3 |
| 5 | * @version $Id: functions_compress.php 10758 2010-08-28 21:30:15Z git-gate $ |
| 6 | * @copyright (c) 2005 phpBB Group |
| 7 | * @license http://opensource.org/licenses/gpl-license.php GNU Public License |
| 8 | * |
| 9 | */ |
| 10 | |
| 11 | /**
|
| 12 | * @ignore |
| 13 | */ |
| 14 | if (!defined('IN_PHPBB')) |
| 15 | {
|
| 16 | exit;
|
| 17 | } |
| 18 | |
| 19 | /**
|
| 20 | * Class for handling archives (compression/decompression) |
| 21 | * @package phpBB3 |
| 22 | */ |
| 23 | class compress |
| 24 | {
|
| 25 | var $fp = 0; |
| 26 | |
| 27 | /**
|
| 28 | * Add file to archive |
| 29 | */ |
| 30 | function add_file($src, $src_rm_prefix = '', $src_add_prefix = '', $skip_files = '') |
| 31 | {
|
| 32 | global $phpbb_root_path; |
| 33 | |
| 34 | $skip_files = explode(',', $skip_files); |
| 35 | |
| 36 | // Remove rm prefix from src path
|
| 37 | $src_path = ($src_rm_prefix) ? preg_replace('#^(' . preg_quote($src_rm_prefix, '#') . ')#', '', $src) : $src; |
| 38 | // Add src prefix
|
| 39 | $src_path = ($src_add_prefix) ? ($src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path) : $src_path; |
| 40 | // Remove initial "/" if present
|
| 41 | $src_path = (substr($src_path, 0, 1) == '/') ? substr($src_path, 1) : $src_path; |
| 42 | |
| 43 | if (is_file($phpbb_root_path . $src)) |
| 44 | {
|
| 45 | $this->data($src_path, file_get_contents("$phpbb_root_path$src"), false, stat("$phpbb_root_path$src")); |
| 46 | } |
| 47 | else if (is_dir($phpbb_root_path . $src)) |
| 48 | {
|
| 49 | // Clean up path, add closing / if not present
|
| 50 | $src_path = ($src_path && substr($src_path, -1) != '/') ? $src_path . '/' : $src_path; |
| 51 | |
| 52 | $filelist = array(); |
| 53 | $filelist = filelist("$phpbb_root_path$src", '', '*'); |
| 54 | krsort($filelist); |
| 55 | |
| 56 | /**
|
| 57 | * Commented out, as adding the folders produces corrupted archives |
| 58 | if ($src_path) |
| 59 | {
|
| 60 | $this->data($src_path, '', true, stat("$phpbb_root_path$src"));
|
| 61 | } |
| 62 | */ |
| 63 | |
| 64 | foreach ($filelist as $path => $file_ary) |
| 65 | {
|
| 66 | /**
|
| 67 | * Commented out, as adding the folders produces corrupted archives |
| 68 | if ($path) |
| 69 | {
|
| 70 | // Same as for src_path |
| 71 | $path = (substr($path, 0, 1) == '/') ? substr($path, 1) : $path; |
| 72 | $path = ($path && substr($path, -1) != '/') ? $path . '/' : $path; |
| 73 | |
| 74 | $this->data("$src_path$path", '', true, stat("$phpbb_root_path$src$path"));
|
| 75 | } |
| 76 | */ |
| 77 | |
| 78 | foreach ($file_ary as $file) |
| 79 | {
|
| 80 | if (in_array($path . $file, $skip_files)) |
| 81 | {
|
| 82 | continue;
|
| 83 | } |
| 84 | |
| 85 | $this->data("$src_path$path$file", file_get_contents("$phpbb_root_path$src$path$file"), false, stat("$phpbb_root_path$src$path$file")); |
| 86 | } |
| 87 | } |
| 88 | } |
| 89 | else
|
| 90 | {
|
| 91 | // $src does not exist
|
| 92 | return false; |
| 93 | } |
| 94 | |
| 95 | return true; |
| 96 | } |
| 97 | |
| 98 | /**
|
| 99 | * Add custom file (the filepath will not be adjusted) |
| 100 | */ |
| 101 | function add_custom_file($src, $filename) |
| 102 | {
|
| 103 | if (!file_exists($src)) |
| 104 | {
|
| 105 | return false; |
| 106 | } |
| 107 | |
| 108 | $this->data($filename, file_get_contents($src), false, stat($src)); |
| 109 | return true; |
| 110 | } |
| 111 | |
| 112 | /**
|
| 113 | * Add file data |
| 114 | */ |
| 115 | function add_data($src, $name) |
| 116 | {
|
| 117 | $stat = array(); |
| 118 | $stat[2] = 436; //384 |
| 119 | $stat[4] = $stat[5] = 0; |
| 120 | $stat[7] = strlen($src); |
| 121 | $stat[9] = time(); |
| 122 | $this->data($name, $src, false, $stat); |
| 123 | return true; |
| 124 | } |
| 125 | |
| 126 | /**
|
| 127 | * Return available methods |
| 128 | */ |
| 129 | function methods() |
| 130 | {
|
| 131 | $methods = array('.tar'); |
| 132 | $available_methods = array('.tar.gz' => 'zlib', '.tar.bz2' => 'bz2', '.zip' => 'zlib'); |
| 133 | |
| 134 | foreach ($available_methods as $type => $module) |
| 135 | {
|
| 136 | if (!@extension_loaded($module)) |
| 137 | {
|
| 138 | continue;
|
| 139 | } |
| 140 | $methods[] = $type; |
| 141 | } |
| 142 | |
| 143 | return $methods; |
| 144 | } |
| 145 | } |
| 146 | |
| 147 | /**
|
| 148 | * Zip creation class from phpMyAdmin 2.3.0 (c) Tobias Ratschiller, Olivier Müller, Loïc Chapeaux, |
| 149 | * Marc Delisle, http://www.phpmyadmin.net/ |
| 150 | * |
| 151 | * Zip extraction function by Alexandre Tedeschi, alexandrebr at gmail dot com |
| 152 | * |
| 153 | * Modified extensively by psoTFX and DavidMJ, (c) phpBB Group, 2003 |
| 154 | * |
| 155 | * Based on work by Eric Mueller and Denis125 |
| 156 | * Official ZIP file format: http://www.pkware.com/appnote.txt |
| 157 | * |
| 158 | * @package phpBB3 |
| 159 | */ |
| 160 | class compress_zip extends compress |
| 161 | {
|
| 162 | var $datasec = array(); |
| 163 | var $ctrl_dir = array(); |
| 164 | var $eof_cdh = "\x50\x4b\x05\x06\x00\x00\x00\x00"; |
| 165 | |
| 166 | var $old_offset = 0; |
| 167 | var $datasec_len = 0; |
| 168 | |
| 169 | /**
|
| 170 | * Constructor |
| 171 | */ |
| 172 | function compress_zip($mode, $file) |
| 173 | {
|
| 174 | $this->fp = @fopen($file, $mode . 'b'); |
| 175 | |
| 176 | if (!$this->fp) |
| 177 | {
|
| 178 | trigger_error('Unable to open file ' . $file . ' [' . $mode . 'b]'); |
| 179 | } |
| 180 | } |
| 181 | |
| 182 | /**
|
| 183 | * Convert unix to dos time |
| 184 | */ |
| 185 | function unix_to_dos_time($time) |
| 186 | {
|
| 187 | $timearray = (!$time) ? getdate() : getdate($time); |
| 188 | |
| 189 | if ($timearray['year'] < 1980) |
| 190 | {
|
| 191 | $timearray['year'] = 1980; |
| 192 | $timearray['mon'] = $timearray['mday'] = 1; |
| 193 | $timearray['hours'] = $timearray['minutes'] = $timearray['seconds'] = 0; |
| 194 | } |
| 195 | |
| 196 | return (($timearray['year'] - 1980) << 25) | ($timearray['mon'] << 21) | ($timearray['mday'] << 16) | ($timearray['hours'] << 11) | ($timearray['minutes'] << 5) | ($timearray['seconds'] >> 1); |
| 197 | } |
| 198 | |
| 199 | /**
|
| 200 | * Extract archive |
| 201 | */ |
| 202 | function extract($dst) |
| 203 | {
|
| 204 | // Loop the file, looking for files and folders
|
| 205 | $dd_try = false; |
| 206 | rewind($this->fp); |
| 207 | |
| 208 | while (!feof($this->fp)) |
| 209 | {
|
| 210 | // Check if the signature is valid...
|
| 211 | $signature = fread($this->fp, 4); |
| 212 | |
| 213 | switch ($signature) |
| 214 | {
|
| 215 | // 'Local File Header'
|
| 216 | case "\x50\x4b\x03\x04": |
| 217 | // Lets get everything we need.
|
| 218 | // We don't store the version needed to extract, the general purpose bit flag or the date and time fields
|
| 219 | $data = unpack("@4/vc_method/@10/Vcrc/Vc_size/Vuc_size/vname_len/vextra_field", fread($this->fp, 26)); |
| 220 | $file_name = fread($this->fp, $data['name_len']); // filename |
| 221 | |
| 222 | if ($data['extra_field']) |
| 223 | {
|
| 224 | fread($this->fp, $data['extra_field']); // extra field |
| 225 | } |
| 226 | |
| 227 | $target_filename = "$dst$file_name"; |
| 228 | |
| 229 | if (!$data['uc_size'] && !$data['crc'] && substr($file_name, -1, 1) == '/') |
| 230 | {
|
| 231 | if (!is_dir($target_filename)) |
| 232 | {
|
| 233 | $str = ''; |
| 234 | $folders = explode('/', $target_filename); |
| 235 | |
| 236 | // Create and folders and subfolders if they do not exist
|
| 237 | foreach ($folders as $folder) |
| 238 | {
|
| 239 | $folder = trim($folder); |
| 240 | if (!$folder) |
| 241 | {
|
| 242 | continue;
|
| 243 | } |
| 244 | |
| 245 | $str = (!empty($str)) ? $str . '/' . $folder : $folder; |
| 246 | if (!is_dir($str)) |
| 247 | {
|
| 248 | if (!@mkdir($str, 0777)) |
| 249 | {
|
| 250 | trigger_error("Could not create directory $folder"); |
| 251 | } |
| 252 | phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE); |
| 253 | } |
| 254 | } |
| 255 | } |
| 256 | // This is a directory, we are not writting files
|
| 257 | continue;
|
| 258 | } |
| 259 | else
|
| 260 | {
|
| 261 | // Some archivers are punks, they don't include folders in their archives!
|
| 262 | $str = ''; |
| 263 | $folders = explode('/', pathinfo($target_filename, PATHINFO_DIRNAME)); |
| 264 | |
| 265 | // Create and folders and subfolders if they do not exist
|
| 266 | foreach ($folders as $folder) |
| 267 | {
|
| 268 | $folder = trim($folder); |
| 269 | if (!$folder) |
| 270 | {
|
| 271 | continue;
|
| 272 | } |
| 273 | |
| 274 | $str = (!empty($str)) ? $str . '/' . $folder : $folder; |
| 275 | if (!is_dir($str)) |
| 276 | {
|
| 277 | if (!@mkdir($str, 0777)) |
| 278 | {
|
| 279 | trigger_error("Could not create directory $folder"); |
| 280 | } |
| 281 | phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE); |
| 282 | } |
| 283 | } |
| 284 | } |
| 285 | |
| 286 | if (!$data['uc_size']) |
| 287 | {
|
| 288 | $content = ''; |
| 289 | } |
| 290 | else
|
| 291 | {
|
| 292 | $content = fread($this->fp, $data['c_size']); |
| 293 | } |
| 294 | |
| 295 | $fp = fopen($target_filename, "w"); |
| 296 | |
| 297 | switch ($data['c_method']) |
| 298 | {
|
| 299 | case 0: |
| 300 | // Not compressed
|
| 301 | fwrite($fp, $content); |
| 302 | break;
|
| 303 | |
| 304 | case 8: |
| 305 | // Deflate
|
| 306 | fwrite($fp, gzinflate($content, $data['uc_size'])); |
| 307 | break;
|
| 308 | |
| 309 | case 12: |
| 310 | // Bzip2
|
| 311 | fwrite($fp, bzdecompress($content)); |
| 312 | break;
|
| 313 | } |
| 314 | |
| 315 | fclose($fp); |
| 316 | break;
|
| 317 | |
| 318 | // We hit the 'Central Directory Header', we can stop because nothing else in here requires our attention
|
| 319 | // or we hit the end of the central directory record, we can safely end the loop as we are totally finished with looking for files and folders
|
| 320 | case "\x50\x4b\x01\x02": |
| 321 | // This case should simply never happen.. but it does exist..
|
| 322 | case "\x50\x4b\x05\x06": |
| 323 | break 2; |
| 324 | |
| 325 | // 'Packed to Removable Disk', ignore it and look for the next signature...
|
| 326 | case 'PK00': |
| 327 | continue 2; |
| 328 | |
| 329 | // We have encountered a header that is weird. Lets look for better data...
|
| 330 | default:
|
| 331 | if (!$dd_try) |
| 332 | {
|
| 333 | // Unexpected header. Trying to detect wrong placed 'Data Descriptor';
|
| 334 | $dd_try = true; |
| 335 | fseek($this->fp, 8, SEEK_CUR); // Jump over 'crc-32'(4) 'compressed-size'(4), 'uncompressed-size'(4) |
| 336 | continue 2; |
| 337 | } |
| 338 | trigger_error("Unexpected header, ending loop"); |
| 339 | break 2; |
| 340 | } |
| 341 | |
| 342 | $dd_try = false; |
| 343 | } |
| 344 | } |
| 345 | |
| 346 | /**
|
| 347 | * Close archive |
| 348 | */ |
| 349 | function close() |
| 350 | {
|
| 351 | // Write out central file directory and footer ... if it exists
|
| 352 | if (sizeof($this->ctrl_dir)) |
| 353 | {
|
| 354 | fwrite($this->fp, $this->file()); |
| 355 | } |
| 356 | fclose($this->fp); |
| 357 | } |
| 358 | |
| 359 | /**
|
| 360 | * Create the structures ... note we assume version made by is MSDOS |
| 361 | */ |
| 362 | function data($name, $data, $is_dir = false, $stat) |
| 363 | {
|
| 364 | $name = str_replace('\\', '/', $name); |
| 365 | |
| 366 | $hexdtime = pack('V', $this->unix_to_dos_time($stat[9])); |
| 367 | |
| 368 | if ($is_dir) |
| 369 | {
|
| 370 | $unc_len = $c_len = $crc = 0; |
| 371 | $zdata = ''; |
| 372 | $var_ext = 10; |
| 373 | } |
| 374 | else
|
| 375 | {
|
| 376 | $unc_len = strlen($data); |
| 377 | $crc = crc32($data); |
| 378 | $zdata = gzdeflate($data); |
| 379 | $c_len = strlen($zdata); |
| 380 | $var_ext = 20; |
| 381 | |
| 382 | // Did we compress? No, then use data as is
|
| 383 | if ($c_len >= $unc_len) |
| 384 | {
|
| 385 | $zdata = $data; |
| 386 | $c_len = $unc_len; |
| 387 | $var_ext = 10; |
| 388 | } |
| 389 | } |
| 390 | unset($data); |
| 391 | |
| 392 | // If we didn't compress set method to store, else deflate
|
| 393 | $c_method = ($c_len == $unc_len) ? "\x00\x00" : "\x08\x00"; |
| 394 | |
| 395 | // Are we a file or a directory? Set archive for file
|
| 396 | $attrib = ($is_dir) ? 16 : 32; |
| 397 | |
| 398 | // File Record Header
|
| 399 | $fr = "\x50\x4b\x03\x04"; // Local file header 4bytes |
| 400 | $fr .= pack('v', $var_ext); // ver needed to extract 2bytes |
| 401 | $fr .= "\x00\x00"; // gen purpose bit flag 2bytes |
| 402 | $fr .= $c_method; // compression method 2bytes |
| 403 | $fr .= $hexdtime; // last mod time and date 2+2bytes |
| 404 | $fr .= pack('V', $crc); // crc32 4bytes |
| 405 | $fr .= pack('V', $c_len); // compressed filesize 4bytes |
| 406 | $fr .= pack('V', $unc_len); // uncompressed filesize 4bytes |
| 407 | $fr .= pack('v', strlen($name));// length of filename 2bytes |
| 408 | |
| 409 | $fr .= pack('v', 0); // extra field length 2bytes |
| 410 | $fr .= $name; |
| 411 | $fr .= $zdata; |
| 412 | unset($zdata); |
| 413 | |
| 414 | $this->datasec_len += strlen($fr); |
| 415 | |
| 416 | // Add data to file ... by writing data out incrementally we save some memory
|
| 417 | fwrite($this->fp, $fr); |
| 418 | unset($fr); |
| 419 | |
| 420 | // Central Directory Header
|
| 421 | $cdrec = "\x50\x4b\x01\x02"; // header 4bytes |
| 422 | $cdrec .= "\x00\x00"; // version made by |
| 423 | $cdrec .= pack('v', $var_ext); // version needed to extract |
| 424 | $cdrec .= "\x00\x00"; // gen purpose bit flag |
| 425 | $cdrec .= $c_method; // compression method |
| 426 | $cdrec .= $hexdtime; // last mod time & date |
| 427 | $cdrec .= pack('V', $crc); // crc32 |
| 428 | $cdrec .= pack('V', $c_len); // compressed filesize |
| 429 | $cdrec .= pack('V', $unc_len); // uncompressed filesize |
| 430 | $cdrec .= pack('v', strlen($name)); // length of filename |
| 431 | $cdrec .= pack('v', 0); // extra field length |
| 432 | $cdrec .= pack('v', 0); // file comment length |
| 433 | $cdrec .= pack('v', 0); // disk number start |
| 434 | $cdrec .= pack('v', 0); // internal file attributes |
| 435 | $cdrec .= pack('V', $attrib); // external file attributes |
| 436 | $cdrec .= pack('V', $this->old_offset); // relative offset of local header |
| 437 | $cdrec .= $name; |
| 438 | |
| 439 | // Save to central directory
|
| 440 | $this->ctrl_dir[] = $cdrec; |
| 441 | |
| 442 | $this->old_offset = $this->datasec_len; |
| 443 | } |
| 444 | |
| 445 | /**
|
| 446 | * file |
| 447 | */ |
| 448 | function file() |
| 449 | {
|
| 450 | $ctrldir = implode('', $this->ctrl_dir); |
| 451 | |
| 452 | return $ctrldir . $this->eof_cdh . |
| 453 | pack('v', sizeof($this->ctrl_dir)) . // total # of entries "on this disk" |
| 454 | pack('v', sizeof($this->ctrl_dir)) . // total # of entries overall |
| 455 | pack('V', strlen($ctrldir)) . // size of central dir |
| 456 | pack('V', $this->datasec_len) . // offset to start of central dir |
| 457 | "\x00\x00"; // .zip file comment length |
| 458 | } |
| 459 | |
| 460 | /**
|
| 461 | * Download archive |
| 462 | */ |
| 463 | function download($filename, $download_name = false) |
| 464 | {
|
| 465 | global $phpbb_root_path; |
| 466 | |
| 467 | if ($download_name === false) |
| 468 | {
|
| 469 | $download_name = $filename; |
| 470 | } |
| 471 | |
| 472 | $mimetype = 'application/zip'; |
| 473 | |
| 474 | header('Pragma: no-cache'); |
| 475 | header("Content-Type: $mimetype; name=\"$download_name.zip\""); |
| 476 | header("Content-disposition: attachment; filename=$download_name.zip"); |
| 477 | |
| 478 | $fp = @fopen("{$phpbb_root_path}store/$filename.zip", 'rb'); |
| 479 | if ($fp) |
| 480 | {
|
| 481 | while ($buffer = fread($fp, 1024)) |
| 482 | {
|
| 483 | echo $buffer; |
| 484 | } |
| 485 | fclose($fp); |
| 486 | } |
| 487 | } |
| 488 | } |
| 489 | |
| 490 | /**
|
| 491 | * Tar/tar.gz compression routine |
| 492 | * Header/checksum creation derived from tarfile.pl, (c) Tom Horsley, 1994 |
| 493 | * |
| 494 | * @package phpBB3 |
| 495 | */ |
| 496 | class compress_tar extends compress |
| 497 | {
|
| 498 | var $isgz = false; |
| 499 | var $isbz = false; |
| 500 | var $filename = ''; |
| 501 | var $mode = ''; |
| 502 | var $type = ''; |
| 503 | var $wrote = false; |
| 504 | |
| 505 | /**
|
| 506 | * Constructor |
| 507 | */ |
| 508 | function compress_tar($mode, $file, $type = '') |
| 509 | {
|
| 510 | $type = (!$type) ? $file : $type; |
| 511 | $this->isgz = preg_match('#(\.tar\.gz|\.tgz)$#', $type); |
| 512 | $this->isbz = preg_match('#\.tar\.bz2$#', $type); |
| 513 | |
| 514 | $this->mode = &$mode; |
| 515 | $this->file = &$file; |
| 516 | $this->type = &$type; |
| 517 | $this->open();
|
| 518 | } |
| 519 | |
| 520 | /**
|
| 521 | * Extract archive |
| 522 | */ |
| 523 | function extract($dst) |
| 524 | {
|
| 525 | $fzread = ($this->isbz && function_exists('bzread')) ? 'bzread' : (($this->isgz && @extension_loaded('zlib')) ? 'gzread' : 'fread'); |
| 526 | |
| 527 | // Run through the file and grab directory entries
|
| 528 | while ($buffer = $fzread($this->fp, 512)) |
| 529 | {
|
| 530 | $tmp = unpack('A6magic', substr($buffer, 257, 6)); |
| 531 | |
| 532 | if (trim($tmp['magic']) == 'ustar') |
| 533 | {
|
| 534 | $tmp = unpack('A100name', $buffer); |
| 535 | $filename = trim($tmp['name']); |
| 536 | |
| 537 | $tmp = unpack('Atype', substr($buffer, 156, 1)); |
| 538 | $filetype = (int) trim($tmp['type']); |
| 539 | |
| 540 | $tmp = unpack('A12size', substr($buffer, 124, 12)); |
| 541 | $filesize = octdec((int) trim($tmp['size'])); |
| 542 | |
| 543 | $target_filename = "$dst$filename"; |
| 544 | |
| 545 | if ($filetype == 5) |
| 546 | {
|
| 547 | if (!is_dir($target_filename)) |
| 548 | {
|
| 549 | $str = ''; |
| 550 | $folders = explode('/', $target_filename); |
| 551 | |
| 552 | // Create and folders and subfolders if they do not exist
|
| 553 | foreach ($folders as $folder) |
| 554 | {
|
| 555 | $folder = trim($folder); |
| 556 | if (!$folder) |
| 557 | {
|
| 558 | continue;
|
| 559 | } |
| 560 | |
| 561 | $str = (!empty($str)) ? $str . '/' . $folder : $folder; |
| 562 | if (!is_dir($str)) |
| 563 | {
|
| 564 | if (!@mkdir($str, 0777)) |
| 565 | {
|
| 566 | trigger_error("Could not create directory $folder"); |
| 567 | } |
| 568 | phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE); |
| 569 | } |
| 570 | } |
| 571 | } |
| 572 | } |
| 573 | else if ($filesize >= 0 && ($filetype == 0 || $filetype == "\0")) |
| 574 | {
|
| 575 | // Some archivers are punks, they don't properly order the folders in their archives!
|
| 576 | $str = ''; |
| 577 | $folders = explode('/', pathinfo($target_filename, PATHINFO_DIRNAME)); |
| 578 | |
| 579 | // Create and folders and subfolders if they do not exist
|
| 580 | foreach ($folders as $folder) |
| 581 | {
|
| 582 | $folder = trim($folder); |
| 583 | if (!$folder) |
| 584 | {
|
| 585 | continue;
|
| 586 | } |
| 587 | |
| 588 | $str = (!empty($str)) ? $str . '/' . $folder : $folder; |
| 589 | if (!is_dir($str)) |
| 590 | {
|
| 591 | if (!@mkdir($str, 0777)) |
| 592 | {
|
| 593 | trigger_error("Could not create directory $folder"); |
| 594 | } |
| 595 | phpbb_chmod($str, CHMOD_READ | CHMOD_WRITE); |
| 596 | } |
| 597 | } |
| 598 | |
| 599 | // Write out the files
|
| 600 | if (!($fp = fopen($target_filename, 'wb'))) |
| 601 | {
|
| 602 | trigger_error("Couldn't create file $filename"); |
| 603 | } |
| 604 | phpbb_chmod($target_filename, CHMOD_READ); |
| 605 | |
| 606 | // Grab the file contents
|
| 607 | fwrite($fp, ($filesize) ? $fzread($this->fp, ($filesize + 511) &~ 511) : '', $filesize); |
| 608 | fclose($fp); |
| 609 | } |
| 610 | } |
| 611 | } |
| 612 | } |
| 613 | |
| 614 | /**
|
| 615 | * Close archive |
| 616 | */ |
| 617 | function close() |
| 618 | {
|
| 619 | $fzclose = ($this->isbz && function_exists('bzclose')) ? 'bzclose' : (($this->isgz && @extension_loaded('zlib')) ? 'gzclose' : 'fclose'); |
| 620 | |
| 621 | if ($this->wrote) |
| 622 | {
|
| 623 | $fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && @extension_loaded('zlib')) ? 'gzwrite' : 'fwrite'); |
| 624 | |
| 625 | // The end of a tar archive ends in two records of all NULLs (1024 bytes of \0)
|
| 626 | $fzwrite($this->fp, str_repeat("\0", 1024)); |
| 627 | } |
| 628 | |
| 629 | $fzclose($this->fp); |
| 630 | } |
| 631 | |
| 632 | /**
|
| 633 | * Create the structures |
| 634 | */ |
| 635 | function data($name, $data, $is_dir = false, $stat) |
| 636 | {
|
| 637 | $this->wrote = true; |
| 638 | $fzwrite = ($this->isbz && function_exists('bzwrite')) ? 'bzwrite' : (($this->isgz && @extension_loaded('zlib')) ? 'gzwrite' : 'fwrite'); |
| 639 | |
| 640 | $typeflag = ($is_dir) ? '5' : ''; |
| 641 | |
| 642 | // This is the header data, it contains all the info we know about the file or folder that we are about to archive
|
| 643 | $header = ''; |
| 644 | $header .= pack('a100', $name); // file name |
| 645 | $header .= pack('a8', sprintf("%07o", $stat[2])); // file mode |
| 646 | $header .= pack('a8', sprintf("%07o", $stat[4])); // owner id |
| 647 | $header .= pack('a8', sprintf("%07o", $stat[5])); // group id |
| 648 | $header .= pack('a12', sprintf("%011o", $stat[7])); // file size |
| 649 | $header .= pack('a12', sprintf("%011o", $stat[9])); // last mod time |
| 650 | |
| 651 | // Checksum
|
| 652 | $checksum = 0; |
| 653 | for ($i = 0; $i < 148; $i++) |
| 654 | {
|
| 655 | $checksum += ord($header[$i]); |
| 656 | } |
| 657 | |
| 658 | // We precompute the rest of the hash, this saves us time in the loop and allows us to insert our hash without resorting to string functions
|
| 659 | $checksum += 2415 + (($is_dir) ? 53 : 0); |
| 660 | |
| 661 | $header .= pack('a8', sprintf("%07o", $checksum)); // checksum |
| 662 | $header .= pack('a1', $typeflag); // link indicator |
| 663 | $header .= pack('a100', ''); // name of linked file |
| 664 | $header .= pack('a6', 'ustar'); // ustar indicator |
| 665 | $header .= pack('a2', '00'); // ustar version |
| 666 | $header .= pack('a32', 'Unknown'); // owner name |
| 667 | $header .= pack('a32', 'Unknown'); // group name |
| 668 | $header .= pack('a8', ''); // device major number |
| 669 | $header .= pack('a8', ''); // device minor number |
| 670 | $header .= pack('a155', ''); // filename prefix |
| 671 | $header .= pack('a12', ''); // end |
| 672 | |
| 673 | // This writes the entire file in one shot. Header, followed by data and then null padded to a multiple of 512
|
| 674 | $fzwrite($this->fp, $header . (($stat[7] !== 0 && !$is_dir) ? $data . str_repeat("\0", (($stat[7] + 511) &~ 511) - $stat[7]) : '')); |
| 675 | unset($data); |
| 676 | } |
| 677 | |
| 678 | /**
|
| 679 | * Open archive |
| 680 | */ |
| 681 | function open() |
| 682 | {
|
| 683 | $fzopen = ($this->isbz && function_exists('bzopen')) ? 'bzopen' : (($this->isgz && @extension_loaded('zlib')) ? 'gzopen' : 'fopen'); |
| 684 | $this->fp = @$fzopen($this->file, $this->mode . (($fzopen == 'bzopen') ? '' : 'b') . (($fzopen == 'gzopen') ? '9' : '')); |
| 685 | |
| 686 | if (!$this->fp) |
| 687 | {
|
| 688 | trigger_error('Unable to open file ' . $this->file . ' [' . $fzopen . ' - ' . $this->mode . 'b]'); |
| 689 | } |
| 690 | } |
| 691 | |
| 692 | /**
|
| 693 | * Download archive |
| 694 | */ |
| 695 | function download($filename, $download_name = false) |
| 696 | {
|
| 697 | global $phpbb_root_path; |
| 698 | |
| 699 | if ($download_name === false) |
| 700 | {
|
| 701 | $download_name = $filename; |
| 702 | } |
| 703 | |
| 704 | switch ($this->type) |
| 705 | {
|
| 706 | case '.tar': |
| 707 | $mimetype = 'application/x-tar'; |
| 708 | break;
|
| 709 | |
| 710 | case '.tar.gz': |
| 711 | $mimetype = 'application/x-gzip'; |
| 712 | break;
|
| 713 | |
| 714 | case '.tar.bz2': |
| 715 | $mimetype = 'application/x-bzip2'; |
| 716 | break;
|
| 717 | |
| 718 | default:
|
| 719 | $mimetype = 'application/octet-stream'; |
| 720 | break;
|
| 721 | } |
| 722 | |
| 723 | header('Pragma: no-cache'); |
| 724 | header("Content-Type: $mimetype; name=\"$download_name$this->type\""); |
| 725 | header("Content-disposition: attachment; filename=$download_name$this->type"); |
| 726 | |
| 727 | $fp = @fopen("{$phpbb_root_path}store/$filename$this->type", 'rb'); |
| 728 | if ($fp) |
| 729 | {
|
| 730 | while ($buffer = fread($fp, 1024)) |
| 731 | {
|
| 732 | echo $buffer; |
| 733 | } |
| 734 | fclose($fp); |
| 735 | } |
| 736 | } |
| 737 | } |
| 738 | |
| 739 | ?> |