Bug 400409

Created attachment 115940 [details]
Terminal output of the run of `marble`.

Thank you for reporting this issue in KDE software. As it has been a while since this issue was reported, can we please ask you to see if you can reproduce the issue with a recent software version?

If you can reproduce the issue, please change the status to "REPORTED" when replying. Thank you!

Dear Bug Submitter,

This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

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If you have already provided the requested information, please
mark the bug as REPORTED so that the KDE team knows that the bug is
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Thank you for helping us make KDE software even better for everyone!

> This bug has been in NEEDSINFO status with no change for at least
15 days. Please provide the requested information as soon as
possible and set the bug status as REPORTED. Due to regular bug
tracker maintenance, if the bug is still in NEEDSINFO status with
no change in 30 days the bug will be closed as RESOLVED > WORKSFORME
due to lack of needed information.

Dear KDE team,

I find it not fair that I am now pressed to react within 30 days, while there was no reaction from you for more than 4 years(!!).

Please, give more time, and accept slow response, if you also take a very long time to react.

(In reply to Justin Zobel from comment #2)
> Thank you for reporting this issue in KDE software. As it has been a while
> since this issue was reported, can we please ask you to see if you can
> reproduce the issue with a recent software version?
> 
> If you can reproduce the issue, please change the status to "REPORTED" when
> replying. Thank you!

I just tried with marble release 22.12.0 (accoring to the "About Marble Virtual Globe"-entry in the "Help" menu it is version 2.2.20(!)) (both the qt-only (non-KDE) as well as  the KDE variant), and it still crashes with a segmentation fault when I do the following steps:

> 1. Start marble
> 2. Select in the menu: 'File' -> 'Create a New Map' -> 'Web Map Service (WMS)'
> 3. In the dialog box, choose 'WMS Server:' 'Custom', and in the field 'URL' enter 'https://geoportal.sachsen.de/portal/arcgis_wmts_capabilities/wmts_geosn_dop-rgb.xml'
> 4. Click 'Next'.
> 5. A dialog window with an empty selection list appears. Click 'Next'.
> 6. marble crashes with a segmentation fault.

I use Artix Linux (Arch Linux without systemd), which is rolling release.

I will attach the output of `marble-qt --debug-info` (only modifications: I have censored my username.0

Created attachment 154798 [details]
terminal output of `marble-qt --debug-info` for the sequence "Steps to Reproduce".

Hello, 

thanks for your report. I have just fixed the crash. However Marble still shows an empty panel.
It looks to me like you are testing with a WMTS server instead of a WMS server. 
At the moment Marble doesn't have support for WMTS however I'm about to add support for it.

Best regards
Torsten

I have added initial support to WMTS. With this support added Marble doesn't crash anymore and allows for the selection of the WMTS layers provided. However there are a few things that I still need to add to Marble in order to have this particular WMTS server supported. If you're interested in the details have a look at:

https://mail.kde.org/pipermail/marble-devel/2023-March/009671.html

Thank you for adding WMTS support.

I now tried again to import the WMTS noted in my initial report as a WMS map, and marble crashes still with a segmentation fault.

Although a WMTS map is not a WMS map and of course using a WMTS map as a WMS map will not work, giving wrong user input in a dialogue window should _not_ make marble crash with a segmentation fault.

I tried a true WMS map (https://geoportal.sachsen.de/cps/metadaten_seite.html?id=d6d24c6d-94ea-447d-8a0c-40afdedeb5c6 -> https://geodienste.sachsen.de/wms_geosn_dtk-pg-color/guest?), that works.

I tried WMTS map https://geoportal.sachsen.de/cps/metadaten_seite.html?id=f5904fe4-7177-465b-bdfc-c706729fc713 -> https://geodienste.sachsen.de/wmts_geosn_webatlas-sn/guest?, that succeeds in adding the map, but selecting it results in empty display.

`marble-qt --debug-info` prints

```
load tile from disk: "Marble::TileId(0, 12, 2207, 1370)"
Marble::StackedTile* Marble::MergedLayerDecorator::loadTile(const Marble::TileId&) "earth/SN_WebAtlas_SN_WMTS" "Marble::TileId(2692082896, 12, 2207, 1370)" QSize(256, 256) ""
static QImage Marble::TileLoader::scaledLowerLevelTile(const Marble::GeoSceneTextureTileDataset*, const Marble::TileId&) "Marble::TileId(2692082896, 12, 2207, 1370)"
TileLoader::scaledLowerLevelTile trying ""
TileLoader::scaledLowerLevelTile trying ""
[...]
TileLoader::scaledLowerLevelTile trying "/home/<username>/.local/share/marble/maps/earth/SN_WebAtlas_SN_WMTS/0/0/0."
No level zero tile installed in map theme dir. Falling back to a transparent image for now.
QImage::copy: 2207 1370 1 1
QImage::scaled: QSize(256, 256)
adding job  QUrl("")
addJob: new job queue size: 1
Marble::StackedTile* Marble::MergedLayerDecorator::Private::createTile(const QVector<QSharedPointer<Marble::TextureTile> >&) const no blending defined => copying top over bottom image
load tile from disk: "Marble::TileId(0, 12, 2208, 1370)"
Marble::StackedTile* Marble::MergedLayerDecorator::loadTile(const Marble::TileId&) "earth/SN_WebAtlas_SN_WMTS" "Marble::TileId(2692082896, 12, 2208, 1370)" QSize(256, 256) ""
static QImage Marble::TileLoader::scaledLowerLevelTile(const Marble::GeoSceneTextureTileDataset*, const Marble::TileId&) "Marble::TileId(2692082896, 12, 2208, 1370)"
TileLoader::scaledLowerLevelTile trying ""
TileLoader::scaledLowerLevelTile trying ""
[...]

TileLoader::scaledLowerLevelTile trying "/home/<username>/.local/share/marble/maps/earth/SN_WebAtlas_SN_WMTS/0/0/0."
No level zero tile installed in map theme dir. Falling back to a transparent image for now.
QImage::copy: 2211 1374 1 1
QImage::scaled: QSize(256, 256)
adding job  QUrl("")
addJob: new job queue size: 5
Marble::StackedTile* Marble::MergedLayerDecorator::Private::createTile(const QVector<QSharedPointer<Marble::TextureTile> >&) const no blending defined => copying top over bottom image
error "maps/earth/SN_WebAtlas_SN_WMTS/12/2207/1370." QNetworkReply::ProtocolUnknownError
"Download of  to maps/earth/SN_WebAtlas_SN_WMTS/12/2207/1370. failed, but trying again soon"
error "maps/earth/SN_WebAtlas_SN_WMTS/12/2208/1370." QNetworkReply::ProtocolUnknownError
"Download of  to maps/earth/SN_WebAtlas_SN_WMTS/12/2208/1370. failed, but trying again soon"
[...]
```

Marble version: 23.8.1.

Created attachment 161803 [details]
.dgml file created from https://geodienste.sachsen.de/wmts_geosn_webatlas-sn/guest?

> I tried WMTS map https://geoportal.sachsen.de/cps/metadaten_seite.html?id=f5904fe4-7177-465b-bdfc-c706729fc713 -> https://geodienste.sachsen.de/wmts_geosn_webatlas-sn/guest?, that succeeds in adding the map, but selecting it results in empty display.

I now have attached the `.dgml` file which marble created for this WMTS map. It shows empty download URL:

```
<downloadUrl protocol="" host="" path="" query=""/>
```