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From "Konrad Windszus (JIRA)" <j...@apache.org>
Subject [jira] [Commented] (FELIX-5309) SslFilter: sendRedirect does not support deliberate protocol changes on the current host
Date Tue, 23 Aug 2016 07:35:20 GMT

    [ https://issues.apache.org/jira/browse/FELIX-5309?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=15432304#comment-15432304

Konrad Windszus commented on FELIX-5309:

The patch looks good to me. Maybe we should extend the javadoc of {{sendRedirect}} and {{setHeader}}
as well telling under which circumstances somethings gets rewritten (although probably not
too many people will look at the javadoc of the response being set by the filter). I agree
that introducing a property to configure the behavior of absolute URLs is probably the safest
way. What do you think about a label like "Do not rewrite absolute redirect URLs" with a value
of {{false}} as the default?

> SslFilter: sendRedirect does not support deliberate protocol changes on the current host
> ----------------------------------------------------------------------------------------
>                 Key: FELIX-5309
>                 URL: https://issues.apache.org/jira/browse/FELIX-5309
>             Project: Felix
>          Issue Type: Bug
>          Components: HTTP Service
>    Affects Versions: http.sslfilter-1.0.6
>            Reporter: Konrad Windszus
>         Attachments: patch.txt
> Consider the case where application A and B are running under the same domain example.com.
A is served by an Apache Felix (below https://example.com/A) and only supports HTTPS (being
terminated e.g. by a LoadBalancer in front). B is served by some other application server
(below https://example.com/B) and only supports HTTP.
> Now I create a link from A towards B with {{HttpServletResponse.sendRedirect("http://example.com/B/somepath")}}.
> This URL is automatically converted by the SslFilter to {{https://example.com/B/somepath}}
which is clearly not intended.
> I think the sendRedirect(...) implementation of the SSLFilter from FELIX-4420 is way
too aggressive, because it will also rewrite absolute URIs already containing a scheme.
> Actually absolute URIs should never been rewritten by that filter, only relative ones
(starting with a "/").

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