From 635b0717931df907ee8015a42ad0ed1fcdf967c4 Mon Sep 17 00:00:00 2001
From: Pierre Schmitz <pierre@archlinux.de>
Date: Mon, 23 Sep 2013 07:47:40 +0200
Subject: Implement rangeDownload() as driver and provide sendfile
 implementations for Nginx and Lighttpd

* The rangeDownload() function has been moved to libraries/Ddownload/drivers/Ddownload_php.php
* The nginx and lighttpd drivers can be set via $config['download_driver']

Signed-off-by: Pierre Schmitz <pierre@archlinux.de>
---
 application/helpers/filebin_helper.php | 99 ----------------------------------
 1 file changed, 99 deletions(-)

(limited to 'application/helpers/filebin_helper.php')

diff --git a/application/helpers/filebin_helper.php b/application/helpers/filebin_helper.php
index 6e4c84e43..71ce7e6ca 100644
--- a/application/helpers/filebin_helper.php
+++ b/application/helpers/filebin_helper.php
@@ -20,105 +20,6 @@ function format_bytes($size)
 	}
 }
 
-// Original source: http://www.phpfreaks.com/forums/index.php?topic=198274.msg895468#msg895468
-function rangeDownload($file, $filename, $type)
-{
-	$fp = @fopen($file, 'r');
-
-	$size	= filesize($file); // File size
-	$length = $size;	   // Content length
-	$start	= 0;		   // Start byte
-	$end	= $size - 1;	   // End byte
-	// Now that we've gotten so far without errors we send the accept range header
-	/* At the moment we only support single ranges.
-	 * Multiple ranges requires some more work to ensure it works correctly
-	 * and comply with the spesifications: http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.2
-	 *
-	 * Multirange support annouces itself with:
-	 * header('Accept-Ranges: bytes');
-	 *
-	 * Multirange content must be sent with multipart/byteranges mediatype,
-	 * (mediatype = mimetype)
-	 * as well as a boundry header to indicate the various chunks of data.
-	 */
-	header("Accept-Ranges: 0-$length");
-	// header('Accept-Ranges: bytes');
-	// multipart/byteranges
-	// http://www.w3.org/Protocols/rfc2616/rfc2616-sec19.html#sec19.2
-	if (isset($_SERVER['HTTP_RANGE']))
-	{
-		$c_start = $start;
-		$c_end	 = $end;
-		// Extract the range string
-		list(, $range) = explode('=', $_SERVER['HTTP_RANGE'], 2);
-		// Make sure the client hasn't sent us a multibyte range
-		if (strpos($range, ',') !== false)
-		{
-			// (?) Shoud this be issued here, or should the first
-			// range be used? Or should the header be ignored and
-			// we output the whole content?
-			header('HTTP/1.1 416 Requested Range Not Satisfiable');
-			header("Content-Range: bytes $start-$end/$size");
-			// (?) Echo some info to the client?
-			exit;
-		}
-		// If the range starts with an '-' we start from the beginning
-		// If not, we forward the file pointer
-		// And make sure to get the end byte if spesified
-		if ($range{0} == '-')
-		{
-			// The n-number of the last bytes is requested
-			$c_start = $size - substr($range, 1);
-		}
-		else
-		{
-			$range	= explode('-', $range);
-			$c_start = $range[0];
-			$c_end	 = (isset($range[1]) && is_numeric($range[1])) ? $range[1] : $size;
-		}
-		/* Check the range and make sure it's treated according to the specs.
-		 * http://www.w3.org/Protocols/rfc2616/rfc2616-sec14.html
-		 */
-		// End bytes can not be larger than $end.
-		$c_end = ($c_end > $end) ? $end : $c_end;
-		// Validate the requested range and return an error if it's not correct.
-		if ($c_start > $c_end || $c_start > $size - 1 || $c_end >= $size)
-		{
-			header('HTTP/1.1 416 Requested Range Not Satisfiable');
-			header("Content-Range: bytes $start-$end/$size");
-			// (?) Echo some info to the client?
-			exit;
-		}
-		$start	= $c_start;
-		$end	= $c_end;
-		$length = $end - $start + 1; // Calculate new content length
-		fseek($fp, $start);
-		header('HTTP/1.1 206 Partial Content');
-		// Notify the client the byte range we'll be outputting
-		header("Content-Range: bytes $start-$end/$size");
-	}
-	header("Content-Length: $length");
-	header("Content-disposition: inline; filename=\"".$filename."\"\n");
-	header("Content-Type: ".$type."\n");
-
-	// Start buffered download
-	$buffer = 1024 * 8;
-	while(!feof($fp) && ($p = ftell($fp)) <= $end)
-	{
-		if ($p + $buffer > $end)
-		{
-			// In case we're only outputtin a chunk, make sure we don't
-			// read past the length
-			$buffer = $end - $p + 1;
-		}
-		set_time_limit(0); // Reset time limit for big files
-		echo fread($fp, $buffer);
-		flush(); // Free up memory. Otherwise large files will trigger PHP's memory limit.
-	}
-
-	fclose($fp);
-}
-
 function even_odd($reset = false)
 {
 	static $counter = 1;
-- 
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