[Magento 2.3.2] Upload fails in image uploader

[posttechguy]

Preconditions:
Magento 2.4-develop
Php 7.3
fileinfo php extension is disabled

Steps to reproduce:

1. Go to Admin -> Content -> Pages;
2. Open "Home Page" to edit (for ex.);
3. Expand the Content tab;
4. Select the image uploader ("Insert Image" button or the one in the editor);
5. Select an image from your HD and upload it.

Actual Result: ✖️ Error: Call to undefined function mime_content_type()

✖️ An error is shown: "File validation failed." No image is uploaded.

Expected Result: ✔️ An image must be uploaded without errors

The temp uploaded file, i.e., '/tmp/sdfds5we23e', which has no extension, is trying to get the extension thus failing to verify against the validTypes array

[m2-assistant]

Hi @posttechguy. Thank you for your report.
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@posttechguy do you confirm that you were able to reproduce the issue on vanilla Magento instance following steps to reproduce?

• yes
• no

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[m2-assistant]

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[engcom-Charlie]

Hello @posttechguy thank you for your report! I'm not able to reproduce issue on clean Magento 2.3.2 .

Manual testing scenario:

1. Go to Content -> Pages -> Edit Home page
2. Add img to Content of CMS Page
   

Actual result:
Image uploaded without any errors

So i have to close this issue. If you have more info please update your issue.

[posttechguy]

Hi @engcom-Charlie I can confirm that the file upload does not work on 2.3-develop. The reason is that the mime_content_type is removed in 7.1, and while it is checked to see if it exists the getFileExtension is not retrieving the ext because when the file is uploaded to /tmp directory, it saves it without an extension. So there is now way to ascertain whether the file is valid or not.

I have tried it on PHP 7.2.16 also

Bevan

[posttechguy]

I have also found this bug, on PHP 7.2.16

Fatal error: Uncaught Error: Call to undefined function mime_content_type() in /vagrant/httpdocs/m23-dev/app/code/Magento/Cms/Model/Wysiwyg/Images/Storage.php:362 Stack trace: #0 /vagrant/httpdocs/m23-dev/app/code/Magento/Cms/Block/Adminhtml/Wysiwyg/Images/Content/Files.php(60): Magento\Cms\Model\Wysiwyg\Images\Storage->getFilesCollection('/vagrant/httpdo...', 'image') #1 /vagrant/httpdocs/m23-dev/app/code/Magento/Cms/Block/Adminhtml/Wysiwyg/Images/Content/Files.php(74): Magento\Cms\Block\Adminhtml\Wysiwyg\Images\Content\Files->getFiles() #2 /vagrant/httpdocs/m23-dev/app/code/Magento/Cms/view/adminhtml/templates/browser/content/files.phtml(13): Magento\Cms\Block\Adminhtml\Wysiwyg\Images\Content\Files->getFilesCount() #3 /vagrant/httpdocs/m23-dev/lib/internal/Magento/Framework/View/TemplateEngine/Php.php(59): include('/vagrant/httpdo...') #4 /vagrant/httpdocs/m23-dev/lib/internal/Magento/Framework/View/Element/Template.php(270): Magento\Framework\View\TemplateEngine\Php->render(Object(Magento\Cms\Block\Adminhtml\Wysiwyg\Im in /vagrant/httpdocs/m23-dev/app/code/Magento/Cms/Model/Wysiwyg/Images/Storage.php on line 362

Again calling the removed function mime_content_type

[engcom-Charlie]

@posttechguy sorry but in my Magento 2.3.2 instance all works fine:

[hostep]

This is a duplicate of #16531 (comment)

@posttechguy: installing the fileinfo php extension should solve your issue.

In my opinion the fileinfo extension needs to get added to the requirements in the composer.json file of Magento's Framework and the composer.json file of the CMS module

Interested in creating a pull request for this?

[posttechguy]

Thanks @hostep, that was my issue.

I have added a PR for the issue

Cheers

[AndyJAllen]

Adding the fileinfo extension fixed my issue too. This should be added to the requirements page:
https://devdocs.magento.com/guides/v2.3/install-gde/system-requirements-tech.html