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authorPierre Schmitz <pierre@archlinux.de>2013-09-23 07:47:40 +0200
committerFlorian Pritz <bluewind@xinu.at>2013-09-23 18:07:47 +0200
commit635b0717931df907ee8015a42ad0ed1fcdf967c4 (patch)
treed301376b6dfc5326a7c2190c99194475ff7bc016 /application/libraries/Ddownload/drivers
parent551c359d8e50608093ba0f7179bd311d89e90da2 (diff)
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 $config['download_driver'] Signed-off-by: Pierre Schmitz <pierre@archlinux.de>
Diffstat (limited to 'application/libraries/Ddownload/drivers')
-rw-r--r--application/libraries/Ddownload/drivers/Ddownload_lighttpd.php27
-rw-r--r--application/libraries/Ddownload/drivers/Ddownload_nginx.php30
-rw-r--r--application/libraries/Ddownload/drivers/Ddownload_php.php111
3 files changed, 168 insertions, 0 deletions
diff --git a/application/libraries/Ddownload/drivers/Ddownload_lighttpd.php b/application/libraries/Ddownload/drivers/Ddownload_lighttpd.php
new file mode 100644
index 000000000..31db4d340
--- /dev/null
+++ b/application/libraries/Ddownload/drivers/Ddownload_lighttpd.php
@@ -0,0 +1,27 @@
+<?php
+/*
+ * Copyright 2013 Pierre Schmitz <pierre@archlinux.de>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Ddownload_lighttpd extends Ddownload_Driver {
+
+ public function serveFile($file, $filename, $type)
+ {
+ $CI =& get_instance();
+ $upload_path = $CI->config->item('upload_path');
+
+ if (strpos($file, $upload_path) !== 0) {
+ show_error('Invalid file path');
+ return;
+ }
+
+ header('Content-disposition: inline; filename="'.$filename."\"\n");
+ header('Content-Type: '.$type."\n");
+ header('X-Sendfile: '.$file."\n");
+ }
+
+}
diff --git a/application/libraries/Ddownload/drivers/Ddownload_nginx.php b/application/libraries/Ddownload/drivers/Ddownload_nginx.php
new file mode 100644
index 000000000..5fb6ffa87
--- /dev/null
+++ b/application/libraries/Ddownload/drivers/Ddownload_nginx.php
@@ -0,0 +1,30 @@
+<?php
+/*
+ * Copyright 2013 Pierre Schmitz <pierre@archlinux.de>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Ddownload_nginx extends Ddownload_Driver {
+
+ public function serveFile($file, $filename, $type)
+ {
+ $CI =& get_instance();
+ $upload_path = $CI->config->item('upload_path');
+ $download_location = $CI->config->item('download_nginx_location');
+
+ if (strpos($file, $upload_path) === 0) {
+ $file_path = substr($file, strlen($upload_path));
+ } else {
+ show_error('Invalid file path');
+ return;
+ }
+
+ header('Content-disposition: inline; filename="'.$filename."\"\n");
+ header('Content-Type: '.$type."\n");
+ header('X-Accel-Redirect: '.$download_location.$file_path."\n");
+ }
+
+}
diff --git a/application/libraries/Ddownload/drivers/Ddownload_php.php b/application/libraries/Ddownload/drivers/Ddownload_php.php
new file mode 100644
index 000000000..344db53f0
--- /dev/null
+++ b/application/libraries/Ddownload/drivers/Ddownload_php.php
@@ -0,0 +1,111 @@
+<?php
+/*
+ * Copyright 2013 Florian "Bluewind" Pritz <bluewind@server-speed.net>
+ *
+ * Licensed under AGPLv3
+ * (see COPYING for full license text)
+ *
+ */
+
+class Ddownload_php extends Ddownload_Driver {
+
+ // Original source: http://www.phpfreaks.com/forums/index.php?topic=198274.msg895468#msg895468
+ public function serveFile($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);
+ }
+
+}