[jira] [Assigned] (CXF-8572) Incorrectly parsed ETag when contains 'W/' as part of the content

["Andriy Redko (Jira)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/CXF-8572?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andriy Redko reassigned CXF-8572:
---------------------------------

    Assignee: Andriy Redko

> Incorrectly parsed ETag when contains 'W/' as part of the content
> -----------------------------------------------------------------
>
>                 Key: CXF-8572
>                 URL: https://issues.apache.org/jira/browse/CXF-8572
>             Project: CXF
>          Issue Type: Bug
>          Components: JAX-RS
>         Environment: Servlet filter in Websphere Liberty 20.0.0.3 with JAX-RS.
>            Reporter: Ben Cox
>            Assignee: Andriy Redko
>            Priority: Minor
>
> We have the following ETag being generated:
> {noformat}
> wyoBLW/ye71RgN/0LNyj4eA5rfE1ovtlM03aakuGr2Y=
> {noformat}
> You'll note in characters 6-7, the combination {{W/}} is found.
> When we run {{EntityTag.valueOf(etag)}} using this Etag, this results in the following error:
> {noformat}
> java.lang.IllegalArgumentException: Misformatted ETag : "wyoBLW/ye71RgN/0LNyj4eA5rfE1ovtlM03aakuGr2Y="
> 	at org.apache.cxf.jaxrs.impl.EntityTagHeaderProvider.fromString(EntityTagHeaderProvider.java:57)
> {noformat}
> The problem [in the code|https://github.com/apache/cxf/blob/097e6bf31f3341ec3fc0a08cfd1f6b65a5e97b1e/rt/frontend/jaxrs/src/main/java/org/apache/cxf/jaxrs/impl/EntityTagHeaderProvider.java#L42] seems to be that it accepts {{W/}} as a special combination regardless of position, which doesn't match with the spec as I read it.
> Setting this minor because in our case I can change a little bit of documentation and alter the ETag; however, it could be a larger problem for anyone who is dealing with purely computer-generated tags and can't get away from a tag with {{W/}} in it.



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