Content-Length header match is case sensitive

[andrewladlow]

The value of the Content-Length: header is checked in a preg_match in https://github.com/sonassi/magento-download-archive/blob/master/src/Download.php#L158 to verify a given file's size, but the header returned from curl is content-length: instead, so the value of $contentLength is undefined.

If we add an echo $data; below https://github.com/sonassi/magento-download-archive/blob/master/src/Download.php#L155 to test, the output when running the phar with these options:

[0]: Other
[0]: magento-sample-data-1.9.1.0.zip

is:

Downloading magento-sample-data-1.9.1.0.zip
--
HTTP/2 200
date: Fri, 04 Dec 2020 15:48:01 GMT
content-type: application/zip
content-length: 440832557
server: nginx
last-modified: Wed, 18 Dec 2019 16:58:04 GMT
set-cookie: PHPSESSID=e6446bca395b5ae940ca4e71c1aff82a; expires=Fri, 04-Dec-2020 16:03:01 GMT; Max-Age=900; path=/; domain=www.magentocommerce.com; secure; HttpOnly
cache-control: must-revalidate, post-check=0, pre-check=0
expires: Thu, 01 Jan 1970 00:00:00 GMT
content-disposition: attachment; filename=magento-sample-data-1.9.1.0-2015-02-11-07-23-24.zip
etag: "5dfa5a9c-1a46922d"
strict-transport-security: max-age=15984000
x-frame-options: SAMEORIGIN
accept-ranges: bytes
PHP Notice:  Undefined variable: contentLength in phar:///usr/src/magento/magento-download-archive/bin/mda.phar/Download.php on line 165
Downloading from https://MAG003125809:[email protected]/products/downloads/file/magento-sample-data-1.9.1.0.zip
Does the remote file exist? File size is 0, cannot download

I think we should therefore make the preg_match check in https://github.com/sonassi/magento-download-archive/blob/master/src/Download.php#L158 case insensitive, by adding i:

if (preg_match('/Content-Length: (\d+)/i', $data, $matches))