https://bugs.kde.org/show_bug.cgi?id=507653
Bug ID: 507653
Summary: kactivitymanagerd Activities DBus introspection
metadata lists incorrect result types for some methods
Classification: Plasma
Product: plasmashell
Version First 6.4.3
Reported In:
Platform: Fedora RPMs
OS: Linux
Status: REPORTED
Severity: normal
Priority: NOR
Component: Activities in general
Assignee: [email protected]
Reporter: [email protected]
CC: [email protected]
Target Milestone: 1.0
SUMMARY
The DBus interface for ActivityInformation and ListActivitiesWithInformation
(and possibly others) advertises results consisting of 3 strings and a double:
https://invent.kde.org/plasma/kactivitymanagerd/-/blob/master/src/common/dbus/org.kde.ActivityManager.Activities.xml?ref_type=heads#L51
The actual C++ structure consists of 4 strings and an integer:
https://invent.kde.org/plasma/kactivitymanagerd/-/blob/master/src/common/dbus/org.kde.ActivityManager.Activities.h?ref_type=heads#L13
This causes DBus bindings that depend on introspection (e.g. pydbus) to fail to
decode method call results.
STEPS TO REPRODUCE
The following python script demonstrates the problem:
#!/usr/bin/env python3
import pydbus
bus = pydbus.SessionBus()
activities = bus.get("org.kde.ActivityManager", "/ActivityManager/Activities")
print(activities.ListActivitiesWithInformation())
1.
2.
3.
OBSERVED RESULT
Traceback (most recent call last):
File "/var/home/bkoropoff/tablet-activity-switcher", line 5, in <module>
print(activities.ListActivitiesWithInformation())
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~^^
File "/usr/lib/python3.13/site-packages/pydbus/proxy_method.py", line 102, in
__call__
raise error
File "/usr/lib/python3.13/site-packages/pydbus/proxy_method.py", line 97, in
__call__
result = instance._bus.con.call_sync(*call_args)
gi.repository.GLib.GError: g-io-error-quark: Method
“ListActivitiesWithInformation” returned type “(a(ssssi))”, but expected
“(a(sssd))” (13)
EXPECTED RESULT
It works.
SOFTWARE/OS VERSIONS
Linux/KDE Plasma: Fedora Kinoite 42
KDE Plasma Version: 6.4.3
KDE Frameworks Version: 6.16.0
Qt Version: 6.9.1
ADDITIONAL INFORMATION
These methods appear to have had incorrect introspection information since they
were introduced (d was used instead of i in the signature):
https://invent.kde.org/plasma/kactivitymanagerd/-/commit/4c6e1d3936e528a715df19d63b1e3a6fa1f2b808
An additional field was added later without updating the XML:
https://invent.kde.org/plasma/kactivitymanagerd/-/commit/901638dbf870cb6e7eeac529c1d30c724c2faf39
--
You are receiving this mail because:
You are watching all bug changes.
