7 Components: the Function Pages - Developers

Confirmation of
the logout
216
��
��
��
template of the confirmation text (see below), yet to be generated.
Finally, we transfer the name of the user that has logged out.
Tip: You can achieve direct redirecting to a TWiki page with the
command TWiki::getViewUrl("Web", "Topic") instead
of TWiki::getOopsUrl.
Why is this confirmation so important? We can only delete the
server from the server's records. The HTTP authentication, however,
works via the browser. It remembers the login data and sends it upon
request (that is, in the presence of a protected script) back to the
server, which once again enters the data in the remote user file. After
our logout, it is possible that the browser could log the user back in
unintentionally. That is why it is necessary, on one hand, to display a
message explaining this situation and, on the other, to redirect the
user to a non-locked page.
Tip: For the Firefox browser, there is the Web Developer, a very
good plugin that enables the HTTP authentication to be reset (Miscellaneous
-> Clear HTTP Authentication).
One possible display via the template system is printed below. For
details on the templates, see Chapter 16.1.3. Save the following file
under the name oopslogoff.tmpl in the templates directory:
%TMPL:INCLUDE{"TWiki"}%
%TMPL:DEF{"titleaction"}%(oops) %TMPL:END%
%TMPL:DEF{"webaction"}%
*Attention*
%TMPL:END%
%TMPL:DEF{"heading"}%Logout%TMPL:END%
%TMPL:DEF{"message"}%
User %PARAM1% is now logged out.
Be careful! You have to shut down your
browser in order to complete the logout. If
you don't, the browser will log you on again
once you hit an authenticated page.
%TMPL:END%
%TMPL:DEF{"topicaction"}%
[[%WEB%.%TOPIC%][OK]]
%TMPL:END%
%TMPL:P{"oops"}%
14 User Permissions in TWiki