Obrazki z wystawy w Galerii na Łączniku
w Instytucie Informatyki Uniwersytetu Wrocławskiego |
STATCACHE);
$this->STATCACHE = array();
return true;
}
function is_sane($fileName = "", $must_exist = 0, $noSymLinks = 0, $noDirs = 0)
{
$exists = false;
if(empty($fileName)) { return false; }
if($must_exist != 0)
{
if(!file_exists($fileName))
{
$this->ERROR = "is_sane: [$fileName] does not exist";
return false;
}
$exists = true;
}
if($exists)
{
if(!is_readable($fileName))
{
$this->ERROR = "is_sane: [$fileName] not readable";
return false;
}
if($noDirs != 0)
{
if(is_dir($fileName))
{
$this->ERROR = "is_sane: [$fileName] is a directory";
return false;
}
}
if($noSymLinks != 0)
{
if(is_link($fileName))
{
$this->ERROR = "is_sane: [$fileName] is a symlink";
return false;
}
}
} // end if exists
return true;
}
// **************************************************************
function read_file ($fileName = "" )
{
$contents = "";
if(empty($fileName))
{
$this->ERROR = "read_file: No file specified";
return false;
}
if(!$this->is_sane($fileName,1,0,1))
{
// Preserve the is_sane() error msg
return false;
}
$fd = @fopen($fileName,"r");
if( (!$fd) || (empty($fd)) )
{
$this->ERROR = "read_file: File error: [$php_errormsg]";
return false;
}
$contents = fread($fd, filesize($fileName) );
fclose($fd);
return $contents;
}
// **************************************************************
// Read a file via fgetss(), which strips all php/html
// from the file.
function strip_read ($fileName = "", $strip_cr = 0)
{
if(empty($fileName))
{
$this->ERROR = "strip_read: No file specified";
return false;
}
if(!$this->is_sane($fileName,1,0,1))
{
// Preserve the error
return false;
}
if($this->BUFFER > 0)
{
$buffer = $this->BUFFER;
} else {
$buffer = filesize($fileName);
}
$contents = "";
$fd = @fopen($fileName,"r");
if( (!$fd) || (empty($fd)) )
{
$this->ERROR = "strip_read: File error: [$php_errormsg]";
return false;
}
while(!feof($fd))
{
$contents .= fgetss($fd,$buffer);
}
fclose($fd);
return $contents;
}
// **************************************************************
function write_file ($fileName,$Data)
{
$tempDir = $this->TEMPDIR;
$tempfile = tempnam( $tempDir, "cdi" );
if(!$this->is_sane($fileName,0,1,1))
{
return false;
}
if (file_exists($fileName))
{
if (!copy($fileName, $tempfile))
{
$this->ERROR = "write_file: cannot create backup file [$tempfile] : [$php_errormsg]";
return false;
}
}
$fd = @fopen( $tempfile, "a" );
if( (!$fd) or (empty($fd)) )
{
$myerror = $php_errormsg;
unlink($tempfile);
$this->ERROR = "write_file: [$tempfile] access error [$myerror]";
return false;
}
fwrite($fd, $Data);
fclose($fd);
if (!copy($tempfile, $fileName))
{
$myerror = $php_errormsg; // Stash the error, see above
unlink($tempfile);
$this->ERROR = "write_file: Cannot copy file [$fileName] [$myerror]";
return false;
}
unlink($tempfile);
if(file_exists($tempfile))
{
// Not fatal but it should be noted
$this->ERROR = "write_file: Could not unlink [$tempfile] : [$php_errormsg]";
}
return true;
}
// **************************************************************
function copy_file ($oldFile = "", $newFile = "")
{
if(empty($oldFile))
{
$this->ERROR = "copy_file: oldFile not specified";
return false;
}
if(empty($newFile))
{
$this->ERROR = "copy_file: newFile not specified";
return false;
}
if(!$this->is_sane($oldFile,1,0,1))
{
// preserve the error
return false;
}
if(!$this->is_sane($newFile,0,1,1))
{
// preserve it
return false;
}
if (! (@copy($oldFile, $newFile)))
{
$this->ERROR = "copy_file: cannot copy file [$oldFile] [$php_errormsg]";
return false;
}
return true;
}
// **********************************************
function get_files ($root_dir, $fileExt = 'ALL_FILES')
{
$fileList = array();
if(!is_dir($root_dir))
{
$this->ERROR = "get_files: Sorry, [$root_dir] is not a directory";
return false;
}
if(empty($fileExt))
{
$this->ERROR = "get_files: No file extensions specified";
return false;
}
$open_dir = @opendir($root_dir);
if( (!$open_dir) or (empty($open_dir)) )
{
$this->ERROR = "get_files: Failed to open dir [$root_dir] : $php_errormsg";
return false;
}
$fileCount = 0;
while ( $file = readdir($open_dir))
{
if( (!is_dir($file)) and (!empty($file)) )
{
if($fileExt == 'ALL_FILES')
{
$fileList[$fileCount] = $file;
$fileCount++;
}
else
{
if(eregi(".\.($fileExt)$",$file))
{
$fileList[$fileCount] = $file;
$fileCount++;
}
}
}
}
closedir($open_dir);
return $fileList;
} // end get_files
function is_owner($fileName, $uid = "")
{
if(empty($uid))
{
if($this->REALUID < 0)
{
$tempDir = $this->TEMPDIR;
$tempFile = tempnam($tempDir,"cdi");
if(!touch($tempFile))
{
$this->ERROR = "is_owner: Unable to create [$tempFile]";
return false;
}
$stats = stat($tempFile);
unlink($tempFile);
$uid = $stats[4];
}
else
{
$uid = $this->REALUID;
}
}
$fileStats = stat($fileName);
if( (empty($fileStats)) or (!$fileStats) )
{
$this->ERROR = "is_owner: Unable to stat [$fileName]";
return false;
}
$this->STATCACHE = $fileStats;
$owner = $fileStats[4];
if($owner == $uid)
{
return true;
}
$this->ERROR = "is_owner: Owner [$owner] Uid [$uid] FAILED";
return false;
}
function is_inGroup($fileName, $gid = "")
{
if(empty($gid))
{
if($this->REALGID < 0)
{
$tempDir = $this->TEMPDIR;
$tempFile = tempnam($tempDir,"cdi");
if(!touch($tempFile))
{
$this->ERROR = "is_inGroup: Unable to create [$tempFile]";
return false;
}
$stats = stat($tempFile);
unlink($tempFile);
$gid = $stats[5];
}
else
{
$gid = $this->REALGID;
}
}
$fileStats = stat($fileName);
if( (empty($fileStats)) or (!$fileStats) )
{
$this->ERROR = "is_inGroup: Unable to stat [$fileName]";
return false;
}
$this->STATCACHE = $fileStats;
$group = $fileStats[5];
if($group == $gid)
{
return true;
}
$this->ERROR = "is_inGroup: Group [$group] Gid [$gid] FAILED";
return false;
}
function get_real_uid()
{
$tempDir = $this->TEMPDIR;
$tempFile = tempnam($tempDir,"cdi");
if(!touch($tempFile))
{
$this->ERROR = "is_owner: Unable to create [$tempFile]";
return false;
}
$stats = stat($tempFile);
unlink($tempFile);
$uid = $stats[4];
$gid = $stats[5];
$this->REALUID = $uid;
$this->REALGID = $gid;
return $uid;
}
function get_real_gid()
{
$uid = $this->get_real_uid();
if( (!$uid) or (empty($uid)) )
{
return false;
}
return $this->REALGID;
}
} // end class File
?> |
