mirror/php-phpbb
1
0
Fork 0
mirror of https://github.com/phpbb/phpbb.git synced 2025-05-05 15:16:16 +02:00
Code Issues Releases Wiki Activity

Improve compatibility of zip extract method

Browse Source 
git-svn-id: file:///svn/phpbb/trunk@4353 89ea8834-ac86-4346-8a33-228a782c2dd0
This commit is contained in:
Paul S. Owen 2003-08-09 00:30:24 +00:00
parent 95767f8440
commit d85c1e052d
1 changed files with 106 additions and 54 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

160
phpBB/includes/functions_compress.php
View File

@ -23,16 +23,24 @@ class compress
{
var $fp = 0;
function add_file($src, $src_prefix = '', $skip_files = '')
function add_file($src, $src_rm_prefix = '', $src_add_prefix = '', $skip_files = '')
{
global $phpbb_root_path;
$skip_files = explode(',', $skip_files);
// Remove prefix from src path
$src_path = ($src_rm_prefix) ? preg_replace('#^(' . preg_quote($src_rm_prefix) . ')#', '', $src) : $src;
// Add prefix
if ($src_add_prefix)
{
$src_path = $src_add_prefix . ((substr($src_add_prefix, -1) != '/') ? '/' : '') . $src_path;
}
// Remove initial "/" if present
$src_path = (substr($src_path, 0, 1) == '/') ? substr($src_path, 1) : $src_path;
if (is_file($phpbb_root_path . $src))
{
$src_prefix = ($src_prefix) ? preg_replace('#^(' . preg_quote($src_prefix) . ')#', '', $src) : $src;
if (!($fp = @fopen($phpbb_root_path . $src, 'rb')))
{
return false;
@ -41,34 +49,32 @@ class compress
$data = fread($fp, filesize($phpbb_root_path . $src));
fclose($fp);
$this->data($src_prefix, $data, filemtime($phpbb_root_path . $src), false);
$this->data($src_path, $data, filemtime($phpbb_root_path . $src), false);
}
else if (is_dir($phpbb_root_path . $src))
{
// Remove prefix from src path
$src_prefix = ($src_prefix) ? preg_replace('#^(' . preg_quote($src_prefix) . ')#', '', $src) : $src;
// Clean up path, remove initial / if present, add ending / if not present
$src_prefix = (strpos($src_prefix, '/') === 0) ? substr($src_prefix, 1) : $src_prefix;
$src_prefix = (strrpos($src_prefix, '/') != strlen($src_prefix) - 1) ? (($src_prefix != '') ? $src_prefix . '/' : '') : $src_prefix;
// Clean up path, add closing / if not present
$src_path = ($src_path && substr($src_path, -1) != '/') ? $src_path . '/' : $src_path;
$filelist = array();
$filelist = filelist($phpbb_root_path . $src, '', '*');
ksort($filelist);
if ($src_prefix)
if ($src_path)
{
$this->data($src_prefix, '', filemtime($src_prefix), true);
$mtime = (file_exists($phpbb_root_path . $src_path)) ? filemtime($src_path) : time();
$this->data($src_path, '', $mtime, true);
}
foreach ($filelist as $path => $file_ary)
{
if ($path)
{
// Same as for src_prefix
$path = (strpos($path, '/') === 0) ? substr($path, 1) : $path;
$path = (strrpos($path, '/') != strlen($path) - 1) ? $path . '/' : $path;
// Same as for src_path
$path = (substr($path, 0, 1) == '/') ? substr($path, 1) : $path;
$path = ($path && substr($path, -1) != '/') ? $path . '/' : $path;
$this->data($src_prefix . $path, '', filemtime($src_prefix . $path), true);
$this->data("$src_path$path", '', filemtime($phpbb_root_path . $path), true);
}
foreach ($file_ary as $file)
@ -78,7 +84,7 @@ class compress
continue;
}
$this->data($src_prefix . $path . $file, implode('', file($phpbb_root_path . $src . $path . $file)), filemtime($phpbb_root_path . $src . $path . $file), false);
$this->data("$src_path$path$file", implode('', file($phpbb_root_path . $src . $path . $file)), filemtime($phpbb_root_path . $src . $path . $file), false);
}
}
@ -131,6 +137,8 @@ class compress_zip extends compress
function extract($dst)
{
$header = $data = '';
$seek_ary = $mkdir_ary = array();
$j = 0;
fseek($this->fp, -14, SEEK_END);
$tmp = unpack("ventries/vtotentries/Vctsize/Vctpos", fread($this->fp, 12));
@ -139,17 +147,19 @@ class compress_zip extends compress
$ctsize = (int) trim($tmp['ctsize']);
$ctpos = (int) trim($tmp['ctpos']);
fseek($this->fp, $ctpos);
// First scan entries, pull out position of data, length, etc.
// and directory structure
for ($i = 0; $i < $entries; $i++)
{
fseek($this->fp, $ctpos);
$buffer = fread($this->fp, 46);
$tmp = unpack("Vcrc/Vc_size/Vuc_size/vstrlen", substr($buffer, 16, 14));
$crc = (int) trim($tmp['crc']);
$c_size = (int) trim($tmp['c_size']);
$uc_size = (int) trim($tmp['uc_size']);
$strlen = (int) trim($tmp['strlen']);
$uc_size = (int) trim($tmp['uc_size']);
$c_size = (int) trim($tmp['c_size']);
$tmp = unpack("Vattrib/Voffset", substr($buffer, 38, 8));
$attrib = (int) trim($tmp['attrib']);
@ -157,42 +167,65 @@ class compress_zip extends compress
$filename = fread($this->fp, $strlen);
$ctpos = ftell($this->fp);
if ($attrib == 0x41FF0010)
if ($attrib == 32)
{
if (!@mkdir($dst . $filename))
{
trigger_error("Could not create directory $filename");
}
$seek_ary[$j]['crc'] = $crc;
$seek_ary[$j]['strlen'] = $strlen;
$seek_ary[$j]['uc_size'] = $uc_size;
$seek_ary[$j]['c_size'] = $c_size;
$seek_ary[$j]['offset'] = $offset;
$seek_ary[$j]['filename'] = $dst . $filename;
$j++;
}
else
{
fseek($this->fp, $offset + 30 + $strlen);
$mkdir_ary[] = $dst . $filename;
}
}
// We have to fudge here for time being
if (!($fp = fopen($dst . $filename . '.gz', 'wb')))
// Create directory structure on fs
if (is_array($mkdir_ary))
{
sort($mkdir_ary);
foreach ($mkdir_ary as $dir)
{
if (!@mkdir($dir))
{
trigger_error("Could not create directory $dir");
}
}
}
// Extract files
foreach ($seek_ary as $seek)
{
$filename = $seek['filename'];
fseek($this->fp, $seek['offset'] + 30 + $seek['strlen']);
// Was data compressed? If so we have to fudge a solution thanks
// to some "issues" with gzuncompress. Else we just write out the
// data
if ($seek['uc_size'] != $seek['c_size'])
{
// Temp gzip file -> .gz header -> data -> gz footer
if (!($fp = fopen($filename . '.gz', 'wb')))
{
trigger_error("Could not open temporary $filename.gz");
}
// .gz header
fwrite($fp, pack('va1a1Va1a1', 0x8b1f, chr(0x08), chr(0x00), time(), chr(0x00), chr(3)));
// data ... write it out in 1KB packets to conserve mem
while ($buffer = fread($this->fp, 1024))
{
fwrite($fp, $buffer);
}
// .gz footer
fwrite($fp, pack("VV", $crc, $uc_size));
fwrite($fp, fread($this->fp, $seek['c_size']));
fwrite($fp, pack("VV", $seek['crc'], $seek['uc_size']));
fclose($fp);
if (!($fp = fopen($dst . $filename, 'wb')))
if (!($fp = fopen($filename, 'wb')))
{
trigger_error("Could not create $filename");
}
if (!($gzfp = gzopen($dst . $filename . '.gz', 'rb')))
if (!($gzfp = gzopen($filename . '.gz', 'rb')))
{
die("Could not open temporary $filename.gz");
}
@ -203,7 +236,17 @@ class compress_zip extends compress
}
gzclose($gzfp);
fclose($fp);
unlink($dst . $filename . '.gz');
unlink($filename . '.gz');
}
else
{
if (!($fp = fopen($filename, 'wb')))
{
trigger_error("Could not create $filename");
}
fwrite($fp, fread($this->fp, $seek['c_size']));
fclose($fp);
}
}
}
@ -223,11 +266,19 @@ class compress_zip extends compress
$hexdtime = '\x' . $dtime[6] . $dtime[7] . '\x' . $dtime[4] . $dtime[5] . '\x' . $dtime[2] . $dtime[3] . '\x' . $dtime[0] . $dtime[1];
eval('$hexdtime = "' . $hexdtime . '";');
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
if ($is_dir)
{
$unc_len = $c_len = $crc = 0;
$zdata = '';
}
else
{
$unc_len = strlen($data);
$crc = crc32($data);
$zdata = gzcompress($data);
$zdata = substr(substr($zdata, 0, strlen($zdata) - 4), 2); // fix crc bug
$c_len = strlen($zdata);
}
unset($data);
$fr = "\x50\x4b\x03\x04"; //
@ -255,7 +306,7 @@ class compress_zip extends compress
unset($fr);
// Are we a file or a directory? Set archive for file
$attrib = ($is_dir) ? 0x41FF0010 : 32;
$attrib = ($is_dir) ? 16 : 32;
$cdrec = "\x50\x4b\x01\x02";
$cdrec .= "\x00\x00"; // version made by
@ -305,10 +356,11 @@ class compress_tar extends compress
var $isgz = false;
var $isbz = false;
function compress_tar($mode, $file)
function compress_tar($mode, $file, $type = '')
{
$this->isgz = (strpos($file, '.tar.gz') !== false || strpos($file, '.tgz') !== false) ? true : false;
$this->isbz = (strpos($file, '.tar.bz2') !== false) ? true : false;
$type = (!$type) ? $file : $type;
$this->isgz = (strpos($type, '.tar.gz') !== false || strpos($type, '.tgz') !== false) ? true : false;
$this->isbz = (strpos($type, '.tar.bz2') !== false) ? true : false;
$fzopen = ($this->isbz && function_exists('bzopen')) ? 'bzopen' : (($this->isgz && extension_loaded('zlib')) ? 'gzopen' : 'fopen');
return $this->fp = @$fzopen($phpbb_root_path . $file, $mode . 'b');
@ -318,8 +370,8 @@ class compress_tar extends compress
{
$fzread = ($this->isbz && function_exists('bzread')) ? 'bzread' : (($this->isgz && extension_loaded('zlib')) ? 'gzread' : 'fread');
$header = $data = '';
$size = 0;
$header = $data = '';
while ($buffer = $fzread($this->fp, 512))
{
$tmp = unpack("A6magic", substr($buffer, 257, 6));
@ -344,7 +396,7 @@ class compress_tar extends compress
{
$tmp = unpack("A12size", substr($buffer, 124, 12));
$filesize = octdec((int) trim($tmp['size']));
if (!($fp = fopen($dst . $filename, 'wb')))
{
trigger_error("Could create file $filename");