[dolphin] [Bug 477081] New: No access to remote FTP folders

[Rafael Linux User]

https://bugs.kde.org/show_bug.cgi?id=477081

            Bug ID: 477081
           Summary: No access to remote FTP folders
    Classification: Applications
           Product: dolphin
           Version: 23.04.2
          Platform: Other
                OS: Linux
            Status: REPORTED
          Severity: major
          Priority: NOR
         Component: general
          Assignee: dolphin-bugs-null at kde.org
          Reporter: rafael.linux.user at gmail.com
                CC: kfm-devel at kde.org
  Target Milestone: ---

SUMMARY
Scenario: Intranet with Internet access via HTTP proxy.
For years I have been using Plasma on a corporate intranet where HTTP
authentication is required to access the Internet and Windows domain
authentication is required to access shared folders on domain computers, using
the SMB protocol. An important detail here is that FTP access is to local
servers INSIDE the intranet, not to computers outside, i.e. Internet access is
not required for FTP.

For years, it has always worked as follows:
- Configure the system proxy
- Set up the KDE proxy (as you know, they are independent).
The problem with this configuration was that KDE applications, such as Dolphin,
when making an FTP connection, would try to use the proxy, so it would
eventually fail. The solution I had to find years ago, is to create a PAC file,
which only in the KDE proxy. In that file, I put that if the path does NOT
contain HTTP://, DO NOT use the proxy. It has always worked without further
problems (and I don't know if there is an easier way to do it, which would be
wonderful).

However, for a few months now, every time I update the system, Dolphin crashes
and is unable to access the local FTP paths (the same happens with Krusader)
and I have to recover the previous snapshot to be able to continue working,
without being able to update the system. In this regard, I have verified that
it happens even with the latest LIVE versions including the latest versions of
KDE.


STEPS TO REPRODUCE
1. Update KDE/Plasma
2. Access to internal FTP server thru Dolphin


OBSERVED RESULT
Dolphin shows an unexpected error, can't access to the FTP path. Console shows
these messages:
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_uri_get_scheme: assertion
'uri != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_uri_get_scheme: assertion
'uri != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_str_has_prefix: assertion
'str != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_uri_get_scheme: assertion
'uri != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_str_has_prefix: assertion
'str != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_uri_get_scheme: assertion
'uri != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_str_has_prefix: assertion
'str != NULL' failed
(process:13253): GLib-CRITICAL **: 15:12:52.440: g_uri_to_string: assertion
'uri != NULL' failed

EXPECTED RESULT
To access FTP server.

SOFTWARE/OS VERSIONS
Operating System: openSUSE Tumbleweed 20230613
KDE Plasma Version: 5.27.5
KDE Frameworks Version: 5.107.0
Qt Version: 5.15.9
Kernel Version: 6.3.7-1-default (64-bit)
Graphics Platform: X11
Processors: 8 × Intel® Core™ i7-9700K CPU @ 3.60GHz


ADDITIONAL INFORMATION
Usually, "caja" file admin continue working after update

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