how-to obtain attachment data via OSLC

Scott Russell (46●8●8) | asked Sep 07 '11, 3:14 p.m.

I'm trying to write a utility to fix-up work items after a export->import migration from one RTC system to another. But when I process attachments I am unable to obtain the actual attachment data (re: <rtc_cm> ) via the obtained rdf:resource reference.

When I do a get on the rdf:resource URI instead of the content data, I get HTML with the text:
"You have followed a direct link to content hosted in a Jazz server. This page has been presented to ensure that a malicious website cannot use cleverly crafted content to circumvent security. If you would like to access the content, please use the link below."

Anyone know what I maybe doing wrong or a way around the injected HTML?


public String getAttachmentDataByReference&#40; TeamConcertRepository repo, WorkItemAttachment wia &#41;

    &#123;

        StringBuffer data = new StringBuffer&#40; &quot;&gt;&gt;&gt;no data retreived&lt;&lt;&lt;&quot; &#41;;

        String dataReference = wia.getContentReference&#40;&#41;;

        GetMethod method = new GetMethod&#40; dataReference &#41;;

        method.addRequestHeader&#40; &quot;Accept&quot;, wia.getFormat&#40;&#41; &#41;;

        method.addRequestHeader&#40; &quot;Content-type&quot;, wia.getFormat&#40;&#41; &#41;;

        method.setFollowRedirects&#40; true &#41;;

        int statusCode;

        try

        &#123;

            statusCode = repo.getClient&#40;&#41;.executeMethod&#40; method &#41;;

            System.err.println&#40; &quot;status from get is&#91;&quot; + statusCode + &quot;&#93;&quot; &#41;;

            InputStream stream = method.getResponseBodyAsStream&#40;&#41;;

            .

            .

            .

Thanks in advance!

Comments

Mike Shkolnik commented Nov 07 '13, 6:55 p.m.

Scott, did you ever get this problem resolved? I am getting the same error.

Scott Russell commented Nov 11 '13, 10:39 a.m.

I personally never found a way but right after we did our migration I was in contact with someone who said they were able to do it. They added:

addHeader("X-Jazz-CSRF-Prevent", holyGrail);

where holyGrail = the session id in your JSESSIONID.

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Ralph Schoon (57.7k●2●36●42) | answered Nov 08 '13, 8:08 a.m.
FORUM ADMINISTRATOR / FORUM MODERATOR / JAZZ DEVELOPER
edited Nov 08 '13, 8:08 a.m.

As far as I am aware, there is no officially supported and documented way to download attachments with OSLC/REST. We had the situation several times in the past and the developers suggested to use the API instead as described here: https://rsjazz.wordpress.com/2012/09/21/downloading-attachments-from-work-items/

Having said that, I am aware some users have traced the communication during a download and were able to rebuild the mechanism.

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