Dear list, I have filed DS-4566 for this issue.
After a bit of digging I realized that the issue here is that DSpace
incorrectly escapes search filter parameters in the query string using a
backslash (\). Tomcat 7.0.107 (at least) returns an HTTP 400 due to invalid
characters in the URL. For example, if I try to search for author
containing "Alan Orth", the resulting "export search metadata" link causes
this error in Tomcat:
Jan 26, 2021 10:47:23 AM org.apache.coyote.http11.AbstractHttp11Processor
process
INFO: Error parsing HTTP request header
Note: further occurrences of HTTP request parsing errors will be logged at
DEBUG level.
java.lang.IllegalArgumentException: Invalid character found in the request
target
[/discover/search/csv?query=*&scope=~&filters=author:(Alan\%20Orth)]. The
valid characters are defined in RFC 7230 and RFC 3986
at
org.apache.coyote.http11.InternalInputBuffer.parseRequestLine(InternalInputBuffer.java:213)
at
org.apache.coyote.http11.AbstractHttp11Processor.process(AbstractHttp11Processor.java:1108)
at
org.apache.coyote.AbstractProtocol$AbstractConnectionHandler.process(AbstractProtocol.java:654)
at
org.apache.tomcat.util.net.JIoEndpoint$SocketProcessor.run(JIoEndpoint.java:317)
at
java.util.concurrent.ThreadPoolExecutor.runWorker(ThreadPoolExecutor.java:1149)
at
java.util.concurrent.ThreadPoolExecutor$Worker.run(ThreadPoolExecutor.java:624)
at
org.apache.tomcat.util.threads.TaskThread$WrappingRunnable.run(TaskThread.java:61)
at java.lang.Thread.run(Thread.java:748)
The string is already URL encoded so there is no need to add a backslash.
For some reason the query works on demo.dspace.org, though it should not. I
suspect that Tomcat has been configured to allow "\" in query parameters
using the relaxedQueryChars option.
Regards,
See: https://jira.lyrasis.org/browse/DS-4566. Note that I accidentally hit
Enter before I was done with the report and there is no edit function. :\
On Sun, Oct 18, 2020 at 3:11 PM Alan Orth <[email protected]> wrote:
> Dear DSpace community,
>
> I'm trying to test the "Export Search Metadata" feature of DSpace 6. I
> search my repository for authors containing a name like "Orth, Alan" where
> there are 22 results. When I try to export the results from the Context →
> Export Search Metadata link I see a blank page with an HTTP 400 in the
> browser's network console. The resulting URL is:
>
>
> http://localhost:8080/discover/search/csv?query=*&scope=~&filters=author:(Orth,\
> Alan)
>
> If I search for "Orth" instead then I do get a CSV. For what it's worth I
> see the same issue on demo.dspace.org when I search for "Lewis, Stuart":
>
>
> http://demo.dspace.org/xmlui/discover?filtertype_1=author&filter_relational_operator_1=contains&filter_1=Lewis%2C+Stuart&submit_apply_filter=&query=&scope=%2F
>
> The export works if I search for "Lewis" instead (note that you have to be
> logged in as a site admin to see the export link).
>
> Is this a known issue? Should I file one?
> --
> Alan Orth
> [email protected]
> https://picturingjordan.com
> https://englishbulgaria.net
> https://mjanja.ch
>
--
Alan Orth
[email protected]
https://picturingjordan.com
https://englishbulgaria.net
https://mjanja.ch
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