Invalid MIME type in org.kde.kdeconnect_open.desktop

[Horst Schirmeier]

Every time update-desktop-database runs (e.g. in a package's postinst script), it complains about a broken MIME entry in /usr/share/applications/org.kde.kdeconnect_open.desktop:

  Error in file "/usr/share/applications/org.kde.kdeconnect_open.desktop": "*/*" is an invalid MIME type ("*" is an unregistered media type)

Steps to reproduce:
- sudo apt install kdeconnect
- sudo update-desktop-database

Expected behavior:
- No error message.

Actual behavior:
- Aforementioned error message, printed by update-desktop-database.

This is how Void Linux fixed this issue:
https://github.com/void-linux/void-packages/issues/21311
https://github.com/void-linux/void-packages/commit/17060bfa012b12896d3d7ec502caa154af6135b4

ProblemType: Bug
DistroRelease: Ubuntu 20.04
Package: kdeconnect 1.4-0ubuntu5
ProcVersionSignature: Ubuntu 5.4.0-29.33-generic 5.4.30
Uname: Linux 5.4.0-29-generic x86_64
NonfreeKernelModules: nvidia_modeset nvidia
ApportVersion: 2.20.11-0ubuntu27
Architecture: amd64
CasperMD5CheckResult: skip
CurrentDesktop: KDE
Date: Wed May 13 12:21:15 2020
InstallationDate: Installed on 2016-11-26 (1263 days ago)
InstallationMedia: Kubuntu 16.10 "Yakkety Yak" - Release amd64 (20161012.1)
SourcePackage: kdeconnect
UpgradeStatus: Upgraded to focal on 2020-03-06 (68 days ago)

[Orctarorga (orctarorga)]

In the desktop file `org.kde.kdeconnect_open.desktop`, the `MimeType` is
`*/*`.

`update-desktop-database` is a tool provided in `desktop-file-utils` that

> updates the database containing a cache of MIME types handled by desktop files

When running `update-desktop-database`, it throws an error saying that

> "*/*" is an invalid MIME type ("*" is an unregistered media type)

This is reported in [Clear Linux](https://github.com/clearlinux/distribution/issues/1906) and [Arch Linux](https://bugs.archlinux.org/task/65865)

STEPS TO REPRODUCE
1. Run `update-desktop-database`

OBSERVED RESULT
> "*/*" is an invalid MIME type ("*" is an unregistered media type)

[8p-k26-gj (8p-k26-gj)]

Is that probably what the "all/allfiles" type is for?

[Saikat Patra (saikat0511)]

I can reproduce this in v1.4, might be present in later versions too.

*/* is not a valid mime type. If I assume this mime type is supposed to include all files, the valid mime type for that is application/octet-stream.

Modifying /usr/share/applications/org.kde.kdeconnect_open.desktop to reflect the same fixes the issue.

[Rex Dieter (rdieter)]

there's multiple validation errors with this .desktop file, MimeType is one:

$ desktop-file-validate kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop | grep error:
kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop: error: (will be fatal in the future): value "*/*;" for key "MimeType" in group "Desktop Entry" contains value "*/*" which is an invalid MIME type: "*" is an unregistered media type
kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop: error: key "MimeType" is present in group "Desktop Entry", but the type is "Service" while this key is only valid for type "Application"
kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop: error: key "Exec" is present in group "Desktop Entry", but the type is "Service" while this key is only valid for type "Application"
kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop: error: key "Terminal" is present in group "Desktop Entry", but the type is "Service" while this key is only valid for type "Application"
kdeconnect-kde-20.04.0/data/org.kde.kdeconnect_open.desktop: error: key "Categories" is present in group "Desktop Entry", but the type is "Service" while this key is only valid for type "Application"

[Philipp Reichmuth (phrxmd)]

You can fix this by changing */* to application/octet-stream as suggested by Saikat Patra.

There are patches to this end for a number of distributions all over the internet, like here: https://github.com/void-linux/void-packages/commit/17060bfa012b12896d3d7ec502caa154af6135b4, but it's an upstream issue.

[Launchpad Janitor (janitor)]

Status changed to 'Confirmed' because the bug affects multiple users.

[Rex Dieter (rdieter)]

Fixed per this merge request
https://invent.kde.org/network/kdeconnect-kde/-/merge_requests/327

and commit:
https://invent.kde.org/network/kdeconnect-kde/-/commit/f1ce22124ce7dd630b8e909b4c50f90f035166d5

[®γσ, ξηg Lιαη Ημ (englianhu)]

Thanks lot !!!