happy programming
Posted in programming on Dec 14th, 2009
I’ve implemented a port-knocking client implementation in PHP inspired by the knockd C implementation made by Judd Vinet.
You can can download it at this page.
If you don’t know what port knocking is, it can briefly described as a way of surreptitiously offering services on a server without advertising the fact. By delivering a special sequence [...]
Posted in programming on Oct 20th, 2009
Venerdi’ 20 Novembre 2009 si terrà a Bologna il sesto Italian Agile Day. Si tratta di una conferenza gratuita di un giorno dedicata alle metodologie Agili per lo sviluppo e la gestione dei progetti software rivolta agli sviluppatori, project leaders, IT managers, tester, architetti e coach che hanno esperienze da condividere o che iniziano solo [...]
Posted in english, programming on Aug 9th, 2009
This article is to make a simple example on how you can manage SOAP Messages with Attachements in PHP and, in particular, I’ll describe how to use the PEAR::SOAP package to transmit files associated to a SOAP message as attachments in their native format in a multipart MIME structure for transport (SOAP Messages with Attachments [...]
Posted in english, programming on Apr 10th, 2009
Very often I found on the web ContentProvider examples based on a SQLite table that describes, as a constraint, to have a column named _id to be used as primary key. Also the official Android Dev Guide introducing in Creating a Content Provider tells to
Be sure to include an integer column named “_id” (with [...]
Posted in english, programming on Jan 17th, 2009
Yesterday I was googling to find the algorithm to covert a netmask (in the dotted decimal format like 255.255.255.0) in corresponding cidr to manage a database migration, but I can't find it. So I wrote it in PHP.
The following function takes a valid netmask in the dotted decimal format as a string in input and [...]
Posted in english, programming on Dec 27th, 2008
If you need to copy an XML document to another filtering it from a specific element node, a good solution could be the use of XSL. The starting point is the so called "identity" template as introduced with an example in the XSLT Recommendation itself:
PLAIN TEXT
XML:
<xsl:template match="@*|node()">
<xsl:copy>
<xsl:apply-templates select="@*|node()"/>
[...]
Posted in english, programming on Nov 29th, 2008
I recently solved a problem common to many heavy used web application following an idea of a friend of mine.
The problem is how to efficently manage the sessions of a web application when the number of them is high (500,000 for example) and the use of them his quite frequent (˜50,000 pages/day in my case).
A [...]
Posted in english, programming on Sep 10th, 2008
If you want to delete, for example, only .bak files throughout a directory tree you can try with the following command:
$ find . -name *.bak -exec rm {} \;
Using the same approach you can solve more complex problems. For example you can delete recursively all directories older than one week:
$ find . -mtime +7 -type [...]
Posted in english, programming on May 23rd, 2008
The version 10.5 (Leopard) of Mac OS hides under the skin some very useful tools for developers. In particular for Java developers, you can find:
Java 5 SDK (as default)
Java 1.4 SDK
Maven 2.0.6
Ant 1.7.0
These tools are sufficient to develop and build complex Java applications but in some cases, the choices made by Apple to install them [...]
Posted in programming on Jan 29th, 2008
Dando per scontato che tutti sappiano che cos'è il PRBM, finalmente mi sono deciso a correggere i bachi segnalati sulla versione 0.6.9, alcuni dei quali probabilmente prensenti da molto tempo. Ecco quindi che rilascio la versione 0.6.10 (codename ''cinquina'') che va a fissare i seguenti problemi:
Le schede dei fiori importate dal raccoglitore inseriscono un errore [...]
