Is DSpace 8.x preventing Anonymous download of PDFs ?

[Eric Montague]

I am running DSpace 8.1 on Windows.

How can I completely disable COAR Notify - LDN Services and Quality Assurance functions?
I think they are causing PDF downloads to fail for Anonymous users.

Starting with 8.0, as an Anonymous user, I've been getting
@ Authentication is required (status:401 exception: Access Denied errors for the following methods, on the Item page,

2025-02-17 12:39:27,804 INFO  8ec30f7c-5b3b-4d32-b22e-82d47975844d 625ab1d4-063e-49a7-95a5-7f946f25fa5b org.dspace.app.rest.utils.DSpaceAPIRequestLoggingFilter
@ Before request [GET /server/api/config/correctiontypes/search/findByItem] originated from /

2025-02-17 12:39:28,235 INFO  8ec30f7c-5b3b-4d32-b22e-82d47975844d b5a8759c-690b-4081-beeb-921503e6cd42 org.dspace.app.rest.utils.DSpaceAPIRequestLoggingFilter
@ Before request [GET /server/api/integration/qualityassurancesources/search/byTarget] originated from /items/37528244-ddaf-474a-b820-ddd5727d251c

2025-02-17 12:39:28,240 INFO  8ec30f7c-5b3b-4d32-b22e-82d47975844d 5724b8d9-0424-4bda-9a1f-110a2c516dbb org.dspace.app.rest.utils.DSpaceAPIRequestLoggingFilter
@ Before request [GET /server/api/ldn/notifyrequests/37528244-ddaf-474a-b820-ddd5727d251c] originated from /items/37528244-ddaf-474a-b820-ddd5727d251c

which causes the PDF download to fail with the following error in the browser console.

13:00:46.955 Navigated to http://localhost:8080/server/api/core/bitstreams/eb6d0ba4-baa9-45f4-8ca8-4ca8c052fe9f/content

13:00:47.027 [webpack-dev-server] Disconnected! polyfills.js:1061:28

13:00:47.028 [webpack-dev-server] Trying to reconnect... polyfills.js:1061:28

13:00:47.221 Partitioned cookie or storage access was provided to “http://localhost:8080/server/api/core/bitstreams/eb6d0ba4-baa9-45f4-8ca8-4ca8c052fe9f/content”

because it is loaded in the third-party context and dynamic state partitioning is enabled.

13:00:47.428 Warning: Indexing all PDF objects pdf.worker.mjs:345:13

13:00:47.453 Invalid or corrupted PDF file.

PDF.js v4.10.22 (build: 4547f230b)

Message: Invalid PDF structure. viewer.mjs:12365:13

13:00:49.992 Uncaught (in promise)

Object { message: "Invalid PDF structure.", name: "InvalidPDFException", stack: "BaseExceptionClosure@resource://pdf.js/build/pdf.mjs:451:29\n@resource://pdf.js/build/pdf.mjs:454:2\n" }

When logged in as an Administrative user, no errors occur, and the PDF is downloaded successfully.

My guess is that somehow COAR Notify - LDN Services and Quality Assurance features have been enabled by default,
and that is causing these errors. I also note that 2 new Solr cores are included in DSpace 8.x, qaevent and suggestions.

I'm pretty sure I don't need any of this LDN / Quality Assurance stuff. And I'm hoping if I disable them, Anonymous users
will once again be able to download PDFs.

Thanks.

Eric Montague, Developer

[DSpace Technical Support]

Hi Eric,

As noted in the DSpace Documentation, both COAR Notify and Quality Assurance are disabled by default.  You have to manually enable both via a configuration setting.  See the configuration docs for each at:

https://wiki.lyrasis.org/display/DSDOC8x/COAR+Notify

https://wiki.lyrasis.org/display/DSDOC8x/Quality+Assurance

Based on the snippet of the error you've shared, it almost sounds like you have a custom PDF viewer or something in place? The error says:

Message: Invalid PDF structure. viewer.mjs:12365:13

I'm not sure what "viewer.mjs" is?  I don't believe that is included in DSpace by default.

So, this all seems odd to me, as I'm not sure what is attempting to open your PDF files.  By default, DSpace will just stream the PDF to your browser (which should trigger a download unless your browser can open up PDF files).

As a sidenote, I also can verify we don't see this same behavior on our demo site (running 8.1) at https://demo.dspace.org

Tim

[Eric Montague]

Thanks Tim,

Your remarks about the browser got me thinking.
I cleared my browser cache (Firefox), and the PDF error disappeared,
and I was/am able to download PDFs as an anonymous user.

Thanks for your help.

- eric

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