Attachment upload fails (unallowed MIME type application/octet-stream)

[Kaemmelot]

Support guidelines

• I've read the support guidelines

I've found a bug and checked that ...

• ... the documentation does not mention anything about my problem
• ... there are no open or closed issues that are related to my problem
• ... it's definitely me, not you

Description

When uploading a certain PDF file to an existing transaction (the file extension and name don't matter) I get a success message, but the attachment is not visible in the transaction itself. When accessing /attachments the file is shown as 0 KB and not present. I found a hidden error on the /debug page but I don't know where this error originates from.

Expected behaviour

I would at least expect a visible message about this error. At best the file upload should just work.

Debug information

Debug information generated at 2022-08-08 19:29:56 Europe/Berlin for Firefly III version 5.7.10.

Scope	Version
Firefly III	5.7.10
Firefly III API	1.5.6
Build	(unknown), (unknown)
DB version	18 (exp. 18)
PHP	8.1.4
Host	Linux

System info	Value
System TZ	Europe/Berlin
Browser TZ	Europe/Berlin
App environment	local
App debug mode	false
App cache driver	file
App logging	notice, stack
Display errors	Off
Error reporting	ALL errors
Interface	fpm-fcgi
Default language	de_DE
Default locale	equal
BCscale	24
DB drivers	mysql
Current driver	mysql
Trusted proxies (.env)	``

User info	Value
Login provider	eloquent
User guard	web
Headers	N/A, N/A
Stateful domains
Session start	2022-08-01 00:00:00
Session end	2022-08-31 23:59:59
Session first	2022-02-01 00:00:00
User ID	1
User language	de_DE
User locale	de_DE
Attempt at "de_DE.utf8"	'de_DE.utf8'
Attempt at "de_DE.UTF-8"	'de_DE.UTF-8'
User agent	Mozilla/5.0 (Windows NT 10.0; Win64; x64) AppleWebKit/537.36 (KHTML, like Gecko) Chrome/104.0.0.0 Safari/537.36

Truncated from this point <----|[2022-08-08 19:13:23] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:13:43] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:15:25] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:16:05] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:22:04] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:22:38] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:29:13] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  
[2022-08-08 19:29:52] local.ERROR: Mime type application/octet-stream is not allowed for API file upload.  

Steps to reproduce

No response

Additional info

I cannot upload the PDF file in this issue because it contains private data. If I can debug something for you tell me. In case you really need it, I could send you the PDF in private.

[JC5]

I have no troubles uploading PDF files myself. What's your setup like?

[Kaemmelot]

This is the first file I have trouble with, all others worked just fine (including multiple PDFs).

I'm running Debian 11.4, apache2 (2.4.54) with php8.1-fpm (8.1.4). I configured a new pool for firefly in php-fpm.
File size is 129 KB, php.ini defines:

file_uploads = On
post_max_size = 8M
upload_max_filesize = 2M

and even way bigger files than this strange PDF can be uploaded. I didn't change much besides the new pool.

I just checked the PDF file version: 1.4 (Acrobat 5.x)

[Kaemmelot]

Some of the apache site configuration:

Protocols h2 http/1.1
RewriteEngine On
SSLEngine on
# SSLCertificate configured

Alias /firefly/ /var/www/firefly/public/
<Directory /var/www/firefly>
        Require all granted
        Options SymLinksIfOwnerMatch
        AllowOverride FileInfo AuthConfig Limit Options=All,MultiViews
        FileETag All

        <IfModule proxy_fcgi_module>
                # Enable http authorization headers
                <IfModule setenvif_module>
                        SetEnvIfNoCase ^Authorization$ "(.+)" HTTP_AUTHORIZATION=$1
                </IfModule>
                <FilesMatch ".+\.ph(ar|p|tml)$">
                        SetHandler "proxy:unix:/run/php/php8.1-fpm-firefly.sock|fcgi://localhost"
                </FilesMatch>
        </IfModule>
</Directory>

[Kaemmelot]

I found the difference for this PDF. I opened it in Notepad++ and found this:

-------------------------------28947758029299
Content-Disposition: form-data; name="censored.pdf"; filename="censored.pdf"
Content-Type: application/x-gzip

%PDF-1.4

I have never seen a gziped PDF.

[JC5]

Neither did I lol. I did discover another issue with uploads. I'll mark it as such and pick it up!

[Kaemmelot]

In case someone else stumbles upon this later on and searches for a solution:
I fixed my problem by converting the PDF. I used the Adobe compress tool with minimal compression.

[github-actions]

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