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Free Nodelet Hack: Fake A Nodelet

by jdporter (Canon)
on May 31, 2007 at 15:43 UTC ( #618521=note: print w/replies, xml ) Need Help??


in reply to Free Nodelet Hack: Mini Super Search
in thread Super Search discouraged?

Scenario: You want to make your own nodelet which behaves exactly like a real nodelet, to contain certain custom content. (We'll call this content B, for Body.)

Solution: Edit your Free Nodelet and duplicate the same form of "separator" html which occurs between actual nodelets.

Implementation: View the html source and see what stuff goes between each nodelet. (We'll call this stuff H, for Header.) Put B at the bottom of your Free Nodelet, and put H just above it. Be sure to customize the content of H for titles, IDs, etc.

For example, if you wanted to make a "real" nodelet out of your Mini Super Search form, you could put the following H above the form code:

</td> </tr> </tbody> <!-- Nodelet Break --> <tbody class="nodelet" id="Mini_Super_Search"> <tr class="nodelet_head_row" id="nodelet_head_row_Mini_Super_Sea +rch"> <th class="nodehead"> Mini Super Search </th> </tr> <tr class="nodelet_body_row" id="nodelet_body_row_Mini_Super_Sea +rch"> <td class="nodebody">

PS — If you set "display nodelets as div" in your Display Settings, you will have to adjust the above to reflect the use of div rather than table/tr/td.

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[tye]: I just daemonized and getlogin() still knew who I had been.
[tye]: perhaps loginuid ? Not that I concede that something not being in /proc means it is not useful.
[Corion]: tye: That's really interesting, but maybe it is because getlogin() returns the name, or the uid, so if that user has been replaced by another user with the same uid in the meantime, that's no problem to the system...
[davido]: or on ubuntu /var/run/utmp
[Corion]: Otherwise, I would imagine that a user with a process still alive would lock that information in memory.
[davido]: so last -f /var/run/utmp on ubuntu provides similar (though more verbose) info
[oiskuu]: glibc getlogin just does ttyname() and falls back on getutline(); it's not security related at all. (reminds me of sendmail and remote finger services of the naive early spam era)
[Corion]: But yes, "who started this process" is interesting information :)
[tye]: no, I really believe that "login user" was added as a fundamental bit of info about each process in order to enhance the usefulness of auditing
[Corion]: Ah - if that information is saved in a file, then you could theoretically spam that file and confuse getlogin(). So, don't use it for authentication :)

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