[Tickets #14774] 404 for OpenDocument embedded pictures in preview

[noreply at bugs.horde.org]

BITTE NICHT AUF DIESE NACHRICHT ANTWORTEN. NACHRICHTEN AN DIESE  
E-MAIL-ADRESSE WERDEN NICHT GELESEN.

Ticket-URL: https://bugs.horde.org/ticket/14774
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  Ticket           | 14774
  Erstellt Von     | admin at layertec.de
  Zusammenfassung  | 404 for OpenDocument embedded pictures in preview
  Warteschlange    | Horde Framework Packages
  Typ              | Bug
  Status           | Unconfirmed
  Priorität        | 2. Medium
  Milestone        |
  Patch            |
  Zuständige       |
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admin at layertec.de (2018-02-01 10:23) hat geschrieben:

When opening an email attached OpenDocument containing a picture, the  
generated HTML preview contains an image-tag with an imp-relative  
image resource path, which can not be resolved: HTTP status 404.

The preview base URL reads (hostname obfuscated):  
https://webmail.acme.com/imp/view.php?actionID=view_attach&id=2&muid=...

The HTML-source-code of the generated preview reads:
<!--This file was converted to xhtml by OpenOffice.org - see  
http://xml.openoffice.org/odf2xhtml for more info.-->
<!-- ... -->
<img style="height:15.004cm;width:10.029cm;" alt=""  
src="./Pictures/100002010000017B000002371EF2A25AAD87F86D.png"/>
<!-- ... -->

I could not find an image file. Neither in
* /var/www/horde/imp/**
nor
* /tmp/.horde/**
nor
* /tmp/

Shouldn't the image be converted to a base64 data-source? Or is there  
a special rewrite rule required?