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[EP-tech] Bot net Attacks



Dear List

during the last 2 weeks we observe some really tricky bot net attacks.
Thousands of requests seem to ask for author information and as a result,
we ran into disk space problems during the massive pagecreation
for /view/authorsnew into the cache.

We did some interesting experiments with apaches mod_evasive. But
unfortunately bot nets change their behaviour to maximum allowed acces per
timeframe we configured. Looks like they know what to do to drive eprints
into trouble...

What do you recommend?

Jens

--
Jens Vieler
Zentrale Informatik
Universit?t Z?rich
Stampfenbachstrasse 73
CH-8006 Z?rich

mail:  jens.vieler at id.uzh.ch
phone: +41 44 63 56777
http://www.id.uzh.ch



Von:	Andrew Collington <a.p.collington at sussex.ac.uk>
An:	"eprints-tech at ecs.soton.ac.uk" <eprints-tech at ecs.soton.ac.uk>
Datum:	07.03.2017 12:44
Betreff:	Re: [EP-tech] Easier way to do this in a citation?
Gesendet von:	eprints-tech-bounces at ecs.soton.ac.uk



Hi John,

That helps a huge amount, thanks you so much!  This gives me a great base
on which to maybe add some functionality of our own and the citation
reworking using the choose/when does make it a bit clearer until I do
(hopefully) get something written.  So many thanks for a very helpful
response!

Andy


From: eprints-tech-bounces at ecs.soton.ac.uk [
mailto:eprints-tech-bounces at ecs.soton.ac.uk] On Behalf Of John Salter
Sent: 03 March 2017 15:58
To: eprints-tech at ecs.soton.ac.uk
Subject: Re: [EP-tech] Easier way to do this in a citation?

Hi Andrew,
I don't think there is a easy way to do what you require in the existing
epscript functions (but there is a way to add it - more on that below!).

You could alter your existing code to make the tests clearer:
<choose>
  <when test="event_title and event_location and event_dates">
    <print expr="event_title" />, <print expr="event_location"/>, <print
expr="event_dates"/>.
</when>
<when test="event_title and event_location">
   <print expr="event_title" />, <print expr="event_location"/>.
</when>
<when test="event_title ">
   <print expr="event_title" />.
</when>
</choose>

But this does feel a bit noisy too.

To add (inject) a custom method to EPrints::Script::Compiled, see the
example here:
https://wiki.eprints.org/w/ORCID#Rendering_the_ORCID_in_a_citation
This keeps the added code in the repository config - and should work over
upgrades (unless there's a major rewrite of EPrints::Script).
In my opinion, any files in <eprints_root>/archives/<archiveid>/cfg/cfg.d/
should be checked as part of an upgrade.

For a similar example, in White Rose Research Online, we wanted to render
event dates in a more 'friendly' human way.
They are stored in the database as 'yyyy-mm-dd - yyyy-mm-dd' (or just
yyyy-mm-dd if it was a one-day event), and we wanted e.g. '1-3 Mar 2017'
'28 Feb - 1 Mar 2017' or '31 Dec 2016 - 2 Jan 2017'.
This https://gist.github.com/jesusbagpuss/491086533294f864de63115c66719def
adds a method to EPrints::Script::Compiled that does this conversion. The
citation uses:
<if test="event_dates"><print expr="wrro_human_event_dates(event_dates)"/>
</if>

Hope that helps!
Cheers,
John



From: eprints-tech-bounces at ecs.soton.ac.uk [
mailto:eprints-tech-bounces at ecs.soton.ac.uk] On Behalf Of Andrew Collington
Sent: 03 March 2017 13:49
To: eprints-tech at ecs.soton.ac.uk
Subject: [EP-tech] Easier way to do this in a citation?

Hi all,

I?ve recently had to add a few new rules in a citation for a conference
proceeding.  At the moment I have a number of checks that look something
like this:

<if test="is_set(event_title)">
<print expr="event_title"/>
</if>
<if test="event_location">
<if test="is_set(event_title)">, </if>
<print expr="event_location"/>
</if>
<if test="is_set(event_dates)">, <print expr="event_dates"/></if>
<if test="is_set(event_title) or is_set(event_location) or is_set
(event_dates)">.</if>

So it?ll only add a comma before the location if the title is supplied,
etc. and the full-stop at the end if any event details are shown.  But,
well, as you can see it?s a pretty messy way to do things and wondered if
there were something a little more streamlined available that would allow
you to supply a list of fields and it?ll then automatically put commas
between values if the values are there and a full-stop at the end if needs
be?  I?m only trying to do this with cite tags in
citations/eprints/default.xml.

I did see a ?pretty_list? function in Compiled.pm that looks like it may do
something like what I want, but despite trying I didn?t see how I could
pull this into a citation nor could I find any documentation on the
subject.  Is that possible?

If this kind of functionality doesn?t already exist, then what?s the best
course of action to adding new types of actions to cite tags?  Is it
possible to create my own class do add extra actions, or should I update
existing modules? (which seems like a bad idea if ever wanting to upgrade).
Is there any documentation about doing this kind of thing?

Many thanks for any advice,

Andy


--
Andrew Collington
Web Programmer, ITS Client Services
ITS-CS Shawcross, University of Sussex, Falmer, Brighton, BN1 9QT

T: (01273) 872591 (ext. 2591)
E: a.p.collington at sussex.ac.uk
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