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Support for broken downloads resuming via parsing 'Range' header value. This addition will ONLY work if PHP is run as Apache module and PHP >= 4.3.0. This condition is checked automatically I added some comments, so you, devs, please, review this. ^^

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git-svn-id: http://xe-core.googlecode.com/svn/sandbox@3361 201d5d3c-b55e-5fd7-737f-ddc643e51545
This commit is contained in:
mayoojin 2007-12-14 16:44:50 +00:00
parent 9bd9925fd0
commit 8814b1f7a3
1 changed files with 80 additions and 10 deletions
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90
modules/file/file.controller.php
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@ -90,17 +90,89 @@
$fp = fopen($uploaded_filename, 'rb');
if(!$fp) return $this->stop('msg_not_permitted_download');
// Support for broken downloads resuming via parsing 'Range' header value. Made by X-[Vr]bL1s5.
// This addition will ONLY work if PHP is run as Apache module and PHP >= 4.3.0
if (function_exists('apache_request_headers')) { // check if we run as Apache module.
$fr_buffer_size = 8192;
$fr_headers = apache_request_headers();
if (isset($fr_headers['Range'])) {
$fr_range_header = trim($fr_headers['Range']);
$fr_range_header = str_replace('bytes=', '', $fr_range_header);
$fr_range = explode ('-', $fr_range_header);
if (isset($fr_range[0]) && ($fr_range[0] != NULL)) {
if (!is_numeric($fr_range[0])) return $this->stop('msg_not_permitted_download'); // invalid header values
$fr_range_begin = $fr_range[0];
if ((int) ($fr_range_begin) < 0) $fr_range_begin = 0;
} else {
$fr_range_begin = 0;
}
if (isset($fr_range[1]) && ($fr_range[1] != NULL)) {
if (!is_numeric($fr_range[1])) return $this->stop('msg_not_permitted_download'); // invalid header values
$fr_range_end = $fr_range[1];
if ((int) ($fr_range_end) > ($file_obj->file_size - 1)) $fr_range_end = $file_obj->file_size - 1;
} else {
$fr_range_end = $file_obj->file_size - 1;
}
$fr_content_length = $fr_range_end - $fr_range_begin + 1;
header("HTTP/1.1 206 Partial Content"); // oh... maybe HTTP proto version will change... ^^;
header("Cache-Control: no-cache");
header("Pragma: no-cache");
header("Accept-Ranges: bytes");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Content-Type: application/octet-stream");
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Length: $fr_content_length");
header("Content-Range: bytes $fr_range_begin-$fr_range_end/" .(string)($file_obj->file_size));
header("Content-Transfer-Encoding: binary");
$fr_bytes_read = 0;
header("Cache-Control: ");
header("Pragma: ");
header("Content-Type: application/octet-stream");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
if (fseek($fp, $fr_range_begin) != 0) return $this->stop('msg_not_permitted_download'); // unable to seek file.
header("Content-Length: " .(string)($file_obj->file_size));
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary\n");
while (!feof($fp)) {
$fr_buffer = fread($fp, $fr_buffer_size);
$fr_bytes_read += strlen($fr_buffer);
if ($fr_content_length > $fr_bytes_read) {
echo $fr_buffer;
} else {
$fr_buffer = substr($fr_buffer, 0, strlen($fr_buffer) - ($fr_bytes_read - $fr_content_length));
echo $fr_buffer;
break;
}
}
} else {
header("HTTP/1.1 200 OK"); // oh... maybe HTTP proto version will change... ^^;
header("Cache-Control: no-cache");
header("Pragma: no-cache");
header("Accept-Ranges: bytes"); // we should claim that we accept ranges!
header("Content-Type: application/octet-stream");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
fpassthru($fp);
header("Content-Length: " .(string)($file_obj->file_size));
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary");
fpassthru($fp);
}
} else { // end of the support...
header("Cache-Control: no-cache"); // originally here it these lines were empty headers like "Cache-Control: ". I don't know why... but it might break the standards. // X-[Vr]bL1s5
header("Pragma: no-cache"); // here too
header("Content-Type: application/octet-stream");
header("Last-Modified: " . gmdate("D, d M Y H:i:s") . " GMT");
header("Content-Length: " .(string)($file_obj->file_size));
header('Content-Disposition: attachment; filename="'.$filename.'"');
header("Content-Transfer-Encoding: binary");
fpassthru($fp);
}
// 이상이 없으면 download_count 증가
$args->file_srl = $file_srl;
@ -310,8 +382,6 @@
$output->add('file_size', $args->file_size);
$output->add('source_filename', $args->source_filename);
$output->add('upload_target_srl', $upload_target_srl);
$output->add('sid', $args->sid);
$output->add('direct_download', $args->direct_download);
return $output;
}