Surnia Ulula

UNIX Ideas for SysAdmins

Asynchronous JavaScript for Social Website Buttons

Categories: JavaScript

Tags: asynchronous, button, javascript, load, share, social, speed, time, webpage

Comments: 2 Comments

Published on: Saturday, January 19th, 2013

Every social website offers some-kind of JavaScript code to insert their button on webpages. Unfortunately, there’s no standard when it comes to the JavaScript code itself — some, like Google+’s +1 button are fairly sophisticated, with different ways to load and render the button, and others like LinkedIn, offer just a simple JavaScript URL to fetch. Here are Google+ and LinkedIn’s suggested buttons for comparison.

<!-- Place this tag where you want the +1 button to render. -->
<div class="g-plusone" data-size="medium" data-annotation="none"></div>

<!-- Place this tag after the last +1 button tag. -->
<script type="text/javascript">
  (function() {
    var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;
    po.src = 'https://apis.google.com/js/plusone.js';
    var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);
  })();
</script>

(function() {

var po = document.createElement('script'); po.type = 'text/javascript'; po.async = true;

po.src = 'https://apis.google.com/js/plusone.js';

var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(po, s);

})();

</script>

<script src="http://platform.linkedin.com/in.js" type="text/javascript"></script>
<script type="IN/Share" data-counter="top"></script>

1 2	<script src="http://platform.linkedin.com/in.js" type="text/javascript"></script> <script type="IN/Share" data-counter="top"></script>

Adobe XMP with an Hierarchical Subject Array in PHP

by Jean-Sebastien Morisset

Categories: PHP

Tags: adobe, array, hierarchical, keywords, php, rdf, xml, xmp

Comments: No Comments

Published on: Monday, January 7th, 2013

This morning I had a bit of a challenge parsing Adobe XMP information for images on Underwater Focus. The Adobe XMP is too complex for SimpleXML, and anyway, I only needed a few values — one of them, the LightRoom hierarchicalSubject keywords, is the reason I’m sharing some of the code I wrote.

Using regular expressions to get at single values is quick and easy, but I wanted to create arrays for rdf:li values, and split each lr:hierarchicalSubject keyword into an additional second-dimension array.

Wesley.pl optimize script for jpeg, png, and gif

Aside by Jean-Sebastien Morisset - Saturday, December 29th, 2012 - (1)

To improve page load times (and Google ranking), you should make sure all jpeg, png, and gif files are properly optimized. Instead of writing my own script for jpegtran, pngcrush, and gifsicle, I used Mike Brittain’s Wesley.pl script on GitHub. It works great, though I did have to modify it to change the “jpegtran -copy” parameter it uses — I need to keep the EXIF on larger files, and strip it from thumbnails. I posted the diff on the GitHub Issues page.

Update 2012-12-31 : In case Mike doesn’t merge my diff, with the addition of the --copy=[all|comments|none] command-line argument (see my comment bellow for more info), you can download the patched wesley.pl script here instead.

Secure Vulnerable WordPress Files and Directories

by Jean-Sebastien Morisset

Categories: HTTP Server, WordPress

Tags: apache httpd, bulletproof security, cache, configuration, custom code, nextgen gallery, plugin, security, vulnerability, w3 total cache, wordpress

Comments: No Comments

Published on: Friday, December 28th, 2012

Recently Jason A. Donenfeld reported a simple vulnerability in W3 Total Cache on the Full Disclosure mailing list, which was picked up by the Security Ledger website, and then posted on Slashdot. The vulnerability is a simple Apache Httpd configuration oversight — plugins often create their own folders under ./wordpress/wp-content/ without considering that directory indexing might be turned on, or that files within that folder are located under a DocumentRoot, and thus available to anyone. Some configuration files are also vulnerable in this way — the wp-config.php file, for example. During the WordPress install, it is recommended that the wp-config.php be re-located one folder above ./wordpress/, to move it out of the DocumentRoot.

Coding for Xmas

I’ve been coding a lot more recently, and this Xmas period has given me the chance to catch up on a few things… NextGEN Facebook OG v2.1 should be out shortly, with support for Pinterest, and a few more options to control where the Open Graph meta tags appear.

Status update posted 5 months ago by Jean-Sebastien Morisset - (0) comments

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