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I can't figure out how to do this - if there is no extension, I cannot add it to acceptable filetypes. Forum search didn't help.

Hi artsapiens,
​
Don't accept them, it's a major security risk to your site that you should not take.
​
Bob

The problem is that some smartphones (some older models I suppose) when trying to upload photos, slice out image extension.
​
Maybe there is possibility just to voluntarily ADD some extension (.jpg for example) during upload if uploading file doesn't have one?
​
Thanks in advance, Bob!

Hi artsapiens,
​
You can use Custom PHP to check the files before the Upload Files action and add jpg if there is no extension set. Check the Joomla JFiles class for the code to use.
​
Bob

Maybe you want to use:

getExt(string $file) : string

in your custom code to get the extension of a file name. See more at Joomla API Index

I'm trying to use jfile, but it doesn't seem to solve the problem.
​
The code I try:[pre]jimport('joomla.filesystem.file');

$jinput = JFactory::getApplication()->input;
$file = $jinput->files->get('file_up'); /* this is file field name */

$info = pathinfo($this->data[file_up]);

if (!$info["extension"]) {
$this->data[file_up] .= "_added_EXT.jpg";
$this->data[file_data_before_change] = $file;
$file['name'] .= "_added_EXT.jpg";
$file['type'] = "image/jpeg"; [br]$this->data[file_data_after_change] = $file;[br]}[/pre]
(the code isinside Custom Php BEFORE Validate Fields part)
and debugger output is:

...
    [file_up] => testfile_added_EXT.jpg
...
    [file_data_before_change] => Array
        (
            [name] => testfile
            [type] => application/octet-stream
            [tmp_name] => /data02/***/tmp/phpqdevMO
            [error] => 0
            [size] => 594182[br]        )[br][br]    [file_data_after_change] => Array[br]        ([br]            [name] => testfile_added_EXT.jpg[br]            [type] => image/jpeg[br]            [tmp_name] => /data02/***/tmp/phpqdevMO[br]            [error] => 0[br]            [size] => 594182[br]        )[br]...

as you can see, tmp file name (including extension) is changed, and even filetype changed as well, but I still getting "File extension is not permitted" error, and file is not uploaded.
​
Any suggestions?

You're not getting the problem. I'm trying to deal with files WITHOUT any extension.

Hi artsapiens,
​
I think that you need to rename the files in the PHP temporary upload folder before the CF Files Upload action
​
Bob

Hi Bob, this is exactly what I'm doing, I'm operating over php temp files (see file path / tmp_name in Debugger on previous post), and it happens BEFORE CF validation and upload (see screenshot attached)

Hi artsapiens,
​
I think that your code is changing the name in the form data - but that will be overwritten by the Upload Files action - it needs to be renamed in the temporary folder so that CF loads the already renamed file.
​
Bob

Hi Bob,
I experimented on localhost to be able to check what's going on in /tmp directory.
So, what I see, is the file, which is mentioned as [tmp_name] in debugger output:
​

[tmp_name] => /data02/***/tmp/phpqdevMO

​
never has any extension, whatever I upload - is it any file with extension or without - this temporary file has no extension, see below:
​
1 - file without extension:[pre] [file_data_before_change] => Array
(
[name] => [mark]tmp-img-no-ext[/mark][br] [type] => application/octet-stream[br] [tmp_name] => /Applications/MAMP/tmp/php/[strong][mark]phpbUO4CT[/mark][/strong][br] [error] => 0[br] [size] => 34357[br] )[/pre]
​
2 - file WITH extension:

    [file_data_before_change] => Array
        (
            [name] => tmp-img.jpg
            [type] => image/jpeg
            [tmp_name] => /Applications/MAMP/tmp/php/phpD9qFqz
            [error] => 0
            [size] => 34357[br]        )

I opened that folder in Finder and I see these files blinking, appearing for a split second and then disappear immediately.
​
I don't think that adding extension to this temporary file is the solution. It's not intended to have any.

Hi artsapiens,
​
Please see this FAQ which has some code written for a related problem. I think you should be able to adapt it to set an extension if there isn't one.
​
Bob

Hi Bob,
​
key things there happens:
​

      $name = "{$name}_{$i}.{$ext}";
      $_FILES[$k]['name'] = $name;

​
which is pretty much the same what is my code doing.
​
Thanks though!