89132 - Setting user agent to Mozilla/4.0 causes Java plugin to fail to start

Status: VERIFIED DUPLICATE of bug 83376

(Core Graveyard :: Java: OJI, defect)

Description

[Warren E. Downs]

From Bugzilla Helper:
User-Agent: Mozilla/5.0 (compatible; MSIE 5.5; Windows 95
BuildID:    2001062823

When prefs.js has a line like the following:

user_pref("general.useragent.override", "Mozilla/4.0 (compatible; MSIE 5.5;
Linux)");

the Java plugin exits (taking the browser down as well) with the message:

Expected a version > 5! Version = 4

The Java plugin should not depend on the user agent string to know what version
of browser it is running in, since that may need to be faked to work with sites
which expect a Mozilla/4.0 browser.


Reproducible: Always
Steps to Reproduce:
1. Change prefs.js to have a Mozilla/4.0 version
2. Install Java plugin
3. Try to load browser from a shell window.  Watch for the error message

Actual Results:  After installing Java plugin, browser fails to start.  Plugin
produces above error message.  Changing the version back to Mozilla/5.0 works,
but then certain sites will block your client (expecting Mozilla/4.0 instead).

Expected Results:  The Java plugin for Mozilla shouldn't care what the user
agent string says.  It should use other means to determine the browser version
it is running in.

Comment 1

[Gilles Durys]

This is not Mozilla's fault I think, but sun's java plugin

Comment 2

[Igor Kushnirskiy]

moving to oji

Comment 3

[edburns]

*** This bug has been marked as a duplicate of 83376 ***