如何使用这些HTTP标头提供此文件？

Question

I am using a shared hosting, so I can't edit Apache settings. I need to allow users to download a .crx file in this way:

1) The file has the content type application/x-chrome-extension
2) The file is not served with the HTTP header X-Content-Type-Options: nosniff
3) The file is served with one of the following content types:
- empty string
- "text/plain"
- "application/octet-stream"
- "unknown/unknown"
- "application/unknown"

How can I do this in PHP or in others way ?

Answer 1

Use header() function.

header('Content-Type: text/plain');

Update:

Sorry I forgot that the file is .crx :)

If your file is cool_app.crx , write a wrapper, say cool_app.php :

<?php
header('Content-Type: application/x-chrome-extension');
include 'cool_app.crx';

Then point your link to cool_app.php .

Answer 2

<?php
header("Content-Type: application/x-chrome-extension; charset=UTF-8");   // use here both proper settings for your case
//  header("Content-Length: " .filesize($your_crx_file));    // this is realy optional, I do recomend to not include this sentence
header('Content-Disposition: attachment; filename="TheNameThatYouWant.crx"');    // this set the name of the downloaded file on browser side.
readfile($your_crx_file)
?>

Answer 3

Try adding this line:

AddType application/x-chrome-extension crx

to your .htaccess file.

Answer 4

As per my comments:

header('content-type: text/plain'); // set the content-type
readfile('path-to-crx.crx');

You first set the content type using the header function.

Then, if the file exists on your server, use the readfile method to send the file, or if it's generated during execution, just echo the file contents.

Answer 5

this work fine

<?php
$file = 'extension.crx';

if (file_exists($file)) {
    header('Content-Description: File Transfer');
    header('Content-Type: application/x-chrome-extension');
    header('Content-Disposition: attachment; filename='.basename($file));
    header('Content-Transfer-Encoding: binary');
    header('Expires: 0');
    header('Cache-Control: must-revalidate');
    header('Pragma: public');
    header('Content-Length: ' . filesize($file));
    ob_clean();
    flush();
    readfile($file);
    exit;
}
?>