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"maxVersion" of install.rdf not taken into account with Firefox 18.

Posted

Hello,

I got something really strange with my extension (which install a NPAPI plugin). I was used to update maxVersion property of the install.rdf every time a new major version of Firefox was released.

Today, I wanted to give a try of installing the extension with a too lower maxVersion value. I was extremely surprised to see that Firefox accepted it. I was able to drop the maxVersion value down to "4.*" (lesser it says that Firefox is not compatible).

I got it under Fedora and Windows.

Here is my install.rdf:

<RDF xmlns="http://www.w3.org/1999/02/22-rdf-syntax-ns#"

    xmlns:em="http://www.mozilla.org/2004/em-rdf#">
 <Description about="urn:mozilla:install-manifest">
   1.2.0.11
   ctviewer@camtrace.com
   2
   CamTrace Viewer
   Displays CamTrace video streams.
   
     <Description>
   <em:locale>fr-fr
   CamTrace Viewer  
   Affiche les flux video CamTrace.
     </Description>
   </em:localized>
   Camtrace S.A.S.
   http://www.camtrace.com/
   chrome://ctviewer/content/camtrace.png
   true
   
   
   <Description>
       <em:id>{ec8030f7-c20a-464f-9b0e-13a3a9e97384}
       1.5
       4.*
   </Description>
   </em:targetApplication>
 </Description>

</RDF>

Additional System Details

Installed Plug-ins

  • Shockwave Flash 11.2 r202
  • Google Talk Plugin Video Accelerator version:0.1.44.23
  • Version: 3.9.1.0
  • The next generation Java plug-in for Mozilla browsers.
  • This plugin provides integration with Gnome Shell for live extension enabling and disabling. It can be used only by extensions.gnome.org
  • The Totem 3.4.3 plugin handles video and audio streams.
  • DivX Web Player version 1.4.0.233
  • This plug-in detects the presence of iTunes when opening iTunes Store URLs in a web page with Firefox.
  • CamTrace Viewer Version 1.2.0.11

Application

  • User Agent: Mozilla/5.0 (X11; Linux i686; rv:18.0) Gecko/20100101 Firefox/18.0

More Information

philipp
  • Top 10 Contributor
  • Moderator
2042 solutions 8887 answers

Chosen Solution

hello, this change was done ~a year ago: https://wiki.mozilla.org/Features/Add-ons/Add-ons_Default_to_Compatible

http://blog.fligtar.com/2011/09/26/add-on-compatibility-progress-plans/

Modified by philipp