Semantic Meta Tags no longer works on private wikis

[kghbln]

Setup

• MediaWiki 1.39.11 (eb03031) 07:05, 30. Dez. 2024
• PHP 8.2.28 (apache2handler)
• MariaDB 10.11.11-MariaDB-0+deb12u1
• Semantic MediaWiki 5.0.0
• Semantic Meta Tags 4.0.0-beta

Issue

EasyRdf is Unauthorized to request wiki pages on private wikis, causing a 401 for all wiki pages.

Original exception: [fd7657b0299e004b839cea84] /whn/35465 EasyRdf\Http\Exception: HTTP request for https://meta.wikihoster.net/w/index.php?title=Spezial:RDF_exportieren&page=35465&recursive=1&backlinks=0 failed: Unauthorized

Backtrace:

from /../w/vendor/easyrdf/easyrdf/lib/Graph.php(354)
#0 /../w/extensions/SemanticMetaTags/src/JsonLDSerializer.php(59): EasyRdf\Graph->load()
#1 /../w/extensions/SemanticMetaTags/src/JsonLDSerializer.php(22): SMT\JsonLDSerializer::setJsonLD()
#2 /../w/extensions/SemanticMetaTags/src/HookRegistry.php(66): SMT\JsonLDSerializer->__construct()
#3 /../w/includes/HookContainer/HookContainer.php(338): SMT\HookRegistry::SMT\{closure}()
#4 /../w/includes/HookContainer/HookContainer.php(137): MediaWiki\HookContainer\HookContainer->callLegacyHook()
#5 /../w/includes/HookContainer/HookRunner.php(943): MediaWiki\HookContainer\HookContainer->run()
#6 /../w/includes/OutputPage.php(2871): MediaWiki\HookContainer\HookRunner->onBeforePageDisplay()
#7 /../w/includes/MediaWiki.php(922): OutputPage->output()
#8 /../w/includes/MediaWiki.php(562): MediaWiki->main()
#9 /../w/index.php(50): MediaWiki->run()
#10 /../w/index.php(46): wfIndexMain()
#11 {main}

Exception caught inside exception handler: [fd7657b0299e004b839cea84] /whn/35465 EasyRdf\Http\Exception: HTTP request for https://meta.wikihoster.net/w/index.php?title=Spezial:RDF_exportieren&page=35465&recursive=1&backlinks=0 failed: Unauthorized

Backtrace:

from /../w/vendor/easyrdf/easyrdf/lib/Graph.php(354)
#0 /../w/extensions/SemanticMetaTags/src/JsonLDSerializer.php(59): EasyRdf\Graph->load()
#1 /../w/extensions/SemanticMetaTags/src/JsonLDSerializer.php(22): SMT\JsonLDSerializer::setJsonLD()
#2 /../w/extensions/SemanticMetaTags/src/HookRegistry.php(66): SMT\JsonLDSeri

[kghbln]

This is not an issue since the extension does not make sense on a private wiki. The respective wiki was public once, and I forgot to remove it. Still, it is worth documenting it.

[kghbln]

Thinking about this a minute longer. Why does this extension try to assess "Special:RDF_export" in the first place? @thomas-topway-it

[thomas-topway-it]

I think because the class/library do not produce json-ld themselves, they just convert the SMW's RDF

[thomas-topway-it]

but you are right that the condition is redundant, it is a residue from PageProperties, which didn't assume SMW was installed

[kghbln]

This means that this can be fixed in the code of the extension itself?

[thomas-topway-it]

hello Karsten, the problem is related to the easyrdf library, I've created a pull request to resolve the error easyrdf/easyrdf#409 -- we have to wait that they will accept, in case, it

[kghbln]

Cool.

[kghbln]

@thomas-topway-it Fixed, given your recent commits? Not a big deal, but still, private prototypes might like to use it until they enter the public? If yes, this issue is obsolete.

[D-Groenewegen]

A valid use case I think is running a private wiki to upgrade or test for production, which is what I'm currently doing.

Unfortunately, because the private wiki is unable to establish a connection, the page just fails to load :Fatal exception of type "EasyRdf\Exception"

Warning: fsockopen(): Unable to connect to ssl://<privatewiki> (Connection refused) in /var/www/html/mywiki/vendor/sweetrdf/easyrdf/lib/Http/Client.php on line 434
MediaWiki internal error.

Backtrace:
from /var/www/html/mywiki/vendor/sweetrdf/easyrdf/lib/Http/Client.php(436)
#0 /var/www/html/mywiki/vendor/sweetrdf/easyrdf/lib/Graph.php(351): EasyRdf\Http\Client->request()
#1 /var/www/html/mywiki/extensions/SemanticMetaTags/src/JsonLDSerializer.php(59): EasyRdf\Graph->load()
#2 /var/www/html/mywiki/extensions/SemanticMetaTags/src/JsonLDSerializer.php(22): SMT\JsonLDSerializer::setJsonLD(MediaWiki\Title\Title, MediaWiki\Output\OutputPage)
#3 /var/www/html/mywiki/extensions/SemanticMetaTags/src/HookRegistry.php(66): SMT\JsonLDSerializer->__construct(MediaWiki\Title\Title, MediaWiki\Output\OutputPage)

(There's more but you get the picture)

It would be great if JsonLDSerializer could somehow intercept the error before it 'cripples' the site.