DocumentManager::smartReadFile()

Complexity

Conditions	11
Paths	34

Size

Total Lines	52
Code Lines	35

Duplication

Lines	0
Ratio	0 %

Importance

Changes	3
Bugs	0	Features	0

<?php
	public static function smartReadFile($fullFilename, $filename, $contentType = 'application/octet-stream')
	{
        if (!file_exists($fullFilename)) {
            header ("HTTP/1.1 404 Not Found");
            return false;
        }

        $size = filesize($fullFilename);
        $time = date('r', filemtime($fullFilename));
        
        $fm = @fopen($fullFilename, 'rb');
        if (!$fm) {

$fm is of type false|resource, thus it always evaluated to false.

            header ("HTTP/1.1 505 Internal server error");
            return false;
        }
        
        $begin = 0;
        $end = $size - 1;
        
        if (isset($_SERVER['HTTP_RANGE'])) {
            if (preg_match('/bytes=\h*(\d+)-(\d*)[\D.*]?/i', $_SERVER['HTTP_RANGE'], $matches)) {
                $begin = intval($matches[1]);
                if (!empty($matches[2])) {
                    $end = intval($matches[2]);
                }
            }
        }
    
        if (isset($_SERVER['HTTP_RANGE'])) {
            header('HTTP/1.1 206 Partial Content');
        } else {
            header('HTTP/1.1 200 OK');
        }
        
        header("Content-Type: $contentType"); 
        header('Cache-Control: public, must-revalidate, max-age=0');
        header('Pragma: no-cache');  
        header('Accept-Ranges: bytes');
        header('Content-Length:' . (($end - $begin) + 1));
        if (isset($_SERVER['HTTP_RANGE'])) {
            header("Content-Range: bytes $begin-$end/$size");
        }
        header("Content-Disposition: inline; filename=$filename");
        header("Content-Transfer-Encoding: binary");
        header("Last-Modified: $time");
        
        $cur = $begin;
        fseek($fm, $begin, 0);
        
        while(!feof($fm) && $cur <= $end && (connection_status() == 0)) {
            print fread($fm, min(1024 * 16, ($end - $cur) + 1));
            $cur += 1024 * 16;
        }