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[Simon Fels <simon.busch@xxxxxxxxxxxxx>]

Public bug reported:

With our package for wpa-supplicant a call

$ sudo gdbus call -y -d fi.w1.wpa_supplicant1 -o
/fi/w1/wpa_supplicant1/Interfaces/1 -m
org.freedesktop.DBus.Properties.GetAll 'fi.w1.wpa_supplicant1.Interface'

fails always with

Error: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No readable
properties in this interface

The reason for this is that the internal properties getter routine will
never return any result when one internal getter fails.

The responsible property here is the "Stations" one which was added by a
patch in Ubuntu and is not available upstream. Take a look at
https://bazaar.launchpad.net/~ubuntu-
branches/ubuntu/wily/wpa/wily/view/head:/debian/patches/dbus-available-
sta.patch

The getter method wpas_dbus_getter_stas expects the ap_iface element to
be see which isn't always the case and if that isn't true it will return
false and causes the whole Properties.GetAll call to fail.

The expected result is that the getter just returns an empty list if it
can't determine the actual value.

** Affects: wpa (Ubuntu)
     Importance: Undecided
         Status: New

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https://bugs.launchpad.net/bugs/1528173

Title:
  org.freedesktop.DBus.Properties.GetAll fails always for
  fi.w1.wpa_supplicant1.Interface interface

Status in wpa package in Ubuntu:
  New

Bug description:
  With our package for wpa-supplicant a call

  $ sudo gdbus call -y -d fi.w1.wpa_supplicant1 -o
  /fi/w1/wpa_supplicant1/Interfaces/1 -m
  org.freedesktop.DBus.Properties.GetAll
  'fi.w1.wpa_supplicant1.Interface'

  fails always with

  Error: GDBus.Error:org.freedesktop.DBus.Error.InvalidArgs: No readable
  properties in this interface

  The reason for this is that the internal properties getter routine
  will never return any result when one internal getter fails.

  The responsible property here is the "Stations" one which was added by
  a patch in Ubuntu and is not available upstream. Take a look at
  https://bazaar.launchpad.net/~ubuntu-
  branches/ubuntu/wily/wpa/wily/view/head:/debian/patches/dbus-
  available-sta.patch

  The getter method wpas_dbus_getter_stas expects the ap_iface element
  to be see which isn't always the case and if that isn't true it will
  return false and causes the whole Properties.GetAll call to fail.

  The expected result is that the getter just returns an empty list if
  it can't determine the actual value.

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