I created my first series of iOS Home Screen backgrounds and you can see and download them from this page.

I found the bug that blocked YourHead's Collage 2 from working in Internet Explorer 9. You can read about it at, and download the corrected plug-in from, the YourHead Support Forum. I attached it there to my last response. If you can't download it from there, contact me and I'll mail you the 2MB zipped file.

Do not 'install' the unzipped file. Rather copy it to /Users/YOURNAME/Library/Application Support/RapidWeaver/

You can open your 'Library' folder, if you do not see it, like described here: https://www.macworld.com/article/1161156/view_library_folder_in_lion.html

 

I wrote a small script that cleans up Lasso 8's internal SQLite database from dynamically created tables in MySQL. It also deletes the dynamic tables from MySQL when older then 2 days, so you do not need a separate script for that.

In my case, the script has been written to clean my dynamically created temp tables, which names all begin with 'REP'. But you can copy the script and of course modify it to your needs.

Happy coding!

Stadswal in Zutphen vanuit Badhuisweg

Gorinchem - Oude Watertoren / Old Water Tower

I sometimes like to design a poster - this time the Watertower image had a nice angle to it to play with. Convert it to a sort-of black&white (PostWorkshop) and than finding a nice frame (ImageFamer)

Cannon Fire in Gorinchem

Just right - the sun as a blast of the old cannon.

Still Life of an Evening@Home

iPhone-apps experiments (tilt-shift, borders, coloring filters, vignettes).

Een paar weken geleden vond ik in de supermarkt in Hummelo een setje lokaal gebrouwen bieren: Bronckhorster, gebrouwen door Brouwerij Rodenburg in Rha. Wel prijzig, dus een aanrader voor af en toe en speciale gelegenheden zoals Ome Joop's speciale gelegenheden: als het regent en als het niet regent!

Suppose you have a nice setup where a page interacts with the server via AJAX-calls and executes a Lasso file on the server to get some data. You don't want this file to be called directly via the URL-bar in a web browser, or via other self-made web pages by others who try to access it via a copy of your page. Anybody can see which AJAX-files your page is calling, so for some it is always a challenge to execute them outside the normal webpage to see what data will come up. Might be of interest! So you want to prevent that, somehow.

There is a Lasso-tag called referrer_url, which returns a string containing the URL that requested your AJAX-page. If you look into this string for a domain name or a path that only you have, you can block execution if the requestor is not coming from your server. When a page is called directly in the browser, the referrer_url is always an empty string. Which is logical, since the page was not referred to by another page.

Suppose I have a page mypage.html with a jQuery auto-complete implementation in it. This auto-complete can of course be used by more than one page and you do not want people to try it out in other ways.

...
...
<input type="text" id="inp1" size="25"><span id="desc1"></span>
...
...
<script>
$(document).ready(function() {
   $("#inp1").autocomplete({minLength:2, source: "ajax.lasso?p1=a&p2=b", select: function(e,u) { $("#inp1").val(u.item.value); $("#desc1").html((u.item.label).replace("(" + u.item.value + ")", "")); return false; } });
});
</script>

Simple protection:
[
if (referrer_url >> '/mypage.html' || referrer_url >> '/myotherpage.html');
...
...
/if;
]

Better protection:
[
if (string(referrer_url)->beginswith('http://my.domain.com/') &&
   (referrer_url >> '/mypage.html' || referrer_url >> '/myotherpage.html'));
...
...
/if;
]

So this gives you some protection from just try something-users. Add a login-system, which restricts the number of users that might want to hack your pages - you can trace their actions on your site. In that case, add a check if the user is logged in. You must execute your complete login-sequence in your AJAX-pages too, as with 'normal' pages, since the xhttprequest is a normal HTTP request and thus the browser sends the same HTTP-headers and cookies, etc.. to your AJAX-page.

More protection:
[
if (referrer_url >> '/mypage.html' || referrer_url >> '/myotherpage.html');
   var('loggedIn = false');

   include('checkuser.lasso');

   if($loggedIn);
      ...
      ...
   /if;
/if;
]

Even better protection:
[
if (string(referrer_url)->beginswith('http://my.domain.com/') &&
   (referrer_url >> '/mypage.html' || referrer_url >> '/myotherpage.html'));
   var('loggedIn = false');

   include('checkuser.lasso');

   if($loggedIn);
      ...
      ...
   /if;
/if;
]

But, as with everything web-related, nothing can be trusted.
 

Night Train Impression

While waiting for my train to come, I suddenly felt like taking this picture - it was all about the combination of people, the (or no) interaction, etc..
After that I used some apps on the iPhone to get the desired effect to abstract the situation and leave more to the imagination.