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OS History   (Content)

specifically to temper or modify these idealistic philosophies of the Free Software movement. See http://www.gnu.org/philosophy/free-software-for-freedom.html for more explanation of the difference between the two movements.

The basic philosophy behind open source is very simple: When programmers can read, redistribute, and modify the source code for a piece of software, the software evolves. People improve it, people adapt it, and people fix the bugs. And this can happen at a speed that, if one is used to the slow pace of conventional software development, seems astonishing.

There are many active Open Source Software projects but some may be thinking you get what you pay for, so if it's free there must be something wrong with it. Sometimes this is true but there are open source software projects providing stable, scalable applications. The key is to know where to look and what to look for when evaluating the stability and scalability.

Here are a few interesting facts and examples of Open Source projects:

Apache is the number one web server at nearly 62% of all installations. Second place was help by Microsoft at just under 27%. (Source: Netcraft)
GNU/Linux is the number two operating system at nearly 30% of all servers behind Microsoft operating system at nearly 50%. (Source: Netcraft)

Sendmail (a mail transport agent) sendmail has become one of the standards of the Internet's infrastructure (TCP/IP, Apache, sendmail).

BIND the Berkley Internet Naming Daemon responsible for mapping domain names to IP addresses ran on 95% of all public reverse DNS servers. (Source: Information Sciences Institute of the University of Southern California).
MySQL founded in 1995 by two open source veterans, Michael "Monty" Widenius and David Axmark, with the help of Allan Larsson and claims 4 million installations worldwide and 30,000 downloads of the software per day making MySQL by far the planet's most widely distributed open-source database. (Source: mySQL)

PHP is a widely used general-purpose scripting language that is especially suited for Web development and can be embedded into HTML and as of May 2003 it was being used on 12,487,030 domains and 1,321,203 IP addresses. (Source: PHP)

Linux Operating System is over three years old and has grabbed 13.7 percent of the $50.9 billion market for server computers, and that figure is expected to jump to 25.2 percent in 2006, putting Linux in the No. 2 position. (Source: IDC)

SourceForge a site providing support tools and resources for the OSS/Free Software movement recently announced a major two year

Generated on February 27, 2009.

Pricing   (Content)

PostNuke is free to download and use for both commercial and non-commercial use. It is licensed under the GNU/GPL version 2 license. The GPL allows you to modify the code without restrictions ensuring you can customize it to fit your project requirements. You can also redistribute your work, with the understanding credit must be given to the original authors and that you must also license the new modified code as GPL. At no time are you permitted to change the license terms.

The GPL license ensures you have full access to the source code. This gives peace of mind about security since nothing is hidden

Generated on February 1, 2009.

History   (Content)

2001 and grew out of the frustration of four guys not being able to contribute to the development of another open source project.
PostNuke was the first open source project to provide a sourceforge type free hosting service to third party developers we nicknamed the NOC (Network Operations Center).

Generated on February 1, 2009.

Open Source   (Content)

according to the Open Software Initiative is "Software where the source code (the language in which the program is written) is freely distributed with the right to modify the code, and on the condition redistribution is not restricted, and indeed is obtainable for no more than the reasonable cost of reproduction." As opposed to proprietary software that provides you with executable binary code only, not the human readable source code it is derived from.
Another variation of the definition by The Free Software Foundation (FSF) refers to "free software" rather than Open Source Software. The FSF's definition stresses "free software is a matter of liberty, not price.' In this context, "free" means "freedom" as in free speech, not free as in "free beer'. Some might be asking, "What's the catch"? And you remember what your mom told you, if it's too good to be true, it must not be true. But in this case, it's true, if you find a software product that meets your needs, there isn't a catch, it really is FREE. The only possibly issue is misunderstanding the term "free." The GPL includes this text: "When we speak of free software, we are referring to freedom, not price." which means the software is not necessarily cost-free and considering the alternatives of proprietary software, it's still a bargain

Generated on January 31, 2009.

Security Announcement: PostSchedule 1.0.5 SQL injection vulnerability   (News)

For .764 PGCalender or PostCalendar might be a solution, when using .8 crpcalendar, Eventliner or TimeIt may be worth to look at.

We do not support PostSchedule with this fix, you use it on you own risk. It may (or may not) fix the recent exploit, but there might be others in the code. If someone wants to have closer look at it, feel free.

Generated on April 29, 2008.

GSoC Interview: Carlos Mauro   (News)

2. What attracted you to the Google Summer of Code as a programme, and PostNuke as a project?

I looked at Google Summer Code as a great challenge. But I do not dare. Until this year, if I did. I applied to several projects related to the topic of usability. And because apply to PostNuke some years ago I work as freelance. Develop some portals for small businesses in my country using postnuke and other CMS. PostNuke is attractive because this was installed in a single attempt. I was surprised. So I think support.

3. Tell us about your project, and how you hope it can benefit PostNuke?
I'm copying what we present in my proposal:

The criteria for the evaluation usability are:
Comparison of controls on Good Practices or patterns Usability on the Web.
Include improvements within the Framework.
Create a guide to improve and documenting findings to the community PostNuke.

a. Usability
To improve the usability of Postnuke i will work graphical interfaces suggested some of the modules and the framwork which are used in the forms. Attempts to put in these modules some good practices and standards for Web usability.
I will Work with what is necessary XHTML, CSS, Ajax whether it is possible to implement and methodically.

b. Accessibility and conformance
For the accessibility i take the the Guidelines and techniques(6). After the programing process. I will make a list for test usability. I will Choose 6 to 7 cms users to test usability with the corrections. The proceeds will help create iterations for each test.

c. Maintainability
Maintenance may accelerate taking intoaccount that at the end of the draft the conclusions will be made in the form of best practices for Web usability postnuke. I will help in the incorporation and supporting of usability guide line in other modules PostNuke.

In the forums I will clarify the tasks of the project and also its scope.


4. What do you personally hope to gain from participating in the Summer of Code with PostNuke?
Many, many experience in knowing more about how a community of developers interested in do make a good product. Learning from good programming practices and especially knowing more about web usability. Of course Social Recognition.
I want postnuke as a milestone in the renewed Internet.

5. Can you see yourself contributing your talents to Open Source projects following the SoC? Will you continue to work with PostNuke in some capacity after the programme has ended?
The GSOC ends after a month of my graduation from college. I hope to finish that time almost all my tasks in the project. I would like to leave a module to test usability. I feel a duty to contribute to the community. I am confident that the project can achieve more significant improvements in its next release and then create or generate support the development of future lines. It should not be discouraged postnuke which has short market ... we see the top, be with them and then jump to heaven.

6. Is there anything else you’d like to say now, as the programme begins?
I would like to see other issues as the framework and its implementation in business or insert google app into the framework. I would like to make a strategic planning for IT postnuke. Devising strategies to make the best CMS, simply: Easy.

Not only is needed to schedule some things to achieve a well-accepted product.Need to know that is what the user wants in the next 5 years and venture into that vision. So I count on your support to work with postnuke .... And of course do my project as realistic as possible in these 3 months in the hope that is of benefit to all.

Lastly, thanks for your time – we in the PostNuke team are excited about the Summer of Code, so thank you for taking part and choosing PostNuke!

We are going ... postnuke to make the Best CMS, the easiest. GEN a social network that seems to make FaceBook a grain of sand in our seas.
I will continue reviewing more documentation and adjusting the project to postnuke with the help of my mentor Steffen Voß and

Generated on April 27, 2008.

GSOC Interview: John Pritchard   (News)

2. What attracted you to the Google Summer of Code as a programme, and PostNuke as a project?

I was attracted to GSoC because I enjoy coding and I thought that I could do with some experience before I actually get a job and I can also help out the community while I'm at it :). I chose PostNuke in particular because php is the language I have the most experience with, I made countless websites through my teenage years and I also spent a lot of time modifying PHP-Nuke to suit my needs (although the code I used is probably buried somewhere now), so I thought it'd be the project that would benefit the most from me and it'd be the one I'd be most comfortable doing.

3. Tell us about your project, and how you hope it can benefit PostNuke?
I'm going to be doing an overhaul of the categories system in PostNuke. I hope it will benefit PostNuke by increasing the usability and efficiency of the categories system.

4. What do you personally hope to gain from participating in the Summer of Code with PostNuke?
Experience and something to put on my CV :)
The satisfaction of doing something productive in the community.
Money - I'm a broke student, so it has to be said :P.

5. Can you see yourself contributing your talents to Open Source projects following the SoC? Will you continue to work with PostNuke in some capacity after the programme has ended?
Depends on time constraints really, I'd definately consider it if I had quite a bit of free time but at the moment I'm pretty swamped with work, I have a few projects of my own that I've had to put on the backburner =\.

7. Is there anything else you’d like to say now, as the programme begins?
I wish everyone good luck with their respective projects and I hope to speak to you all soon :)...Oh and "hey mum, I'm on the internet!" :P.

Lastly, thanks for your time – we in the PostNuke team are excited about the Summer of Code, so thank you for taking part and choosing PostNuke!

I'm excited too, thanks for choosing me!

Generated on April 25, 2008.

OpenID for PostNuke   (News)

If you haven't read that yet and is interested in OpenID then please read it here - it will explain the whole OpenID background.

For those of you that haven't heard about OpenID yet, here is the very short explanation: OpenID is a relatively new web-technology for managing your online identity. It's primary purpose is to facilitate Single Sign On across independent websites. This means you can create yourself an OpenID identity and use that for login in to different websites without having to retype your password over and over again.

When I wrote the last article I promissed to deliver an OpenID implementation for PostNuke, and, well, here it is! You can now download OpenID from the NOC OpenID project page.

By installing this module you enable your users to:


Register an OpenID with their PostNuke account and login with this OpenID. The OpenID manager page can be found in the user account panel (Profile).

Create an account on your website using OpenID's registration process.


The OpenID module requires PostNuke version .8 from SVN (april 15th) - and probably also PHP 5.x since a required extension "domxml" is not delivered with PHP 4.x.

So don't hesitate - get your website OpenID enabled today and save yourself (and your customers) the hazzle of managing multiple user accounts.

Intra-web usage
You can use OpenID for Single Sign On between closed "intra-webs". For this
you must have a trusted OpenID Identity Provider (IP) - either your own or an
external one. Then you add a filter on the OpenID admin pages - this filter
should allow access from your trusted IP and deny access from any other
provider. In this way only users from your trusted IP will be allowed to access
your website.

Read more

You can find lots of information about OpenID around the web. The most obvious place to start is of course openid.net. But at openidbook.com you can get a free copy of the 200+ pages OpenID book from Rafeeq Ur Rehman. This should satisfy even the most curious people

Enjoy, Jørn Wildt

Generated on April 16, 2008.

Going OpenID   (News)

(if you already know OpenID then jump directly to the last section about
OpenID in PostNuke)
OpenID - a Free, Decentralized Online Identity
OpenID is a relatively new web-technology for managing your online identity. It's primary purpose is to facilitate Single Sign On across independent websites. This means you can create yourself an OpenID identity and use that for login in to different websites without having to retype your password over and over again.
Your OpenID consists of a URL, e.g., http://jornwildt.myopenid.com, and the OpenID technology makes it possible for you to prove that you own this URL. So, when you want to log in to a website supporting OpenID, you type this URL and then the website takes care of the rest (almost). EnThinnai Blog compares OpenIDs to credit cards: credit cards are issued by someone, it proves your identity at the issuer, you can have as many cards as you want, and in OpenID's case you can even use them to get access to places.
You can also use your OpenID to sign a weblog comment without the need to register as a user on that website. No one else can do that with your URL so your comments cannot be spoofed by anyone.
Take a look at these demos of how it works in some applications: OpenID for WordPress.
OpenID on blogger.com.
OpenID at
plaxo.com.
On Simon Willison's website you can also see some good examples of what OpenID can be used for.
One very interesting thing is that OpenID has just been adopted by Yahoo! So now each and every one of the 250 million Yahoo! users have their own OpenID identity. Even Google, IBM, Microsoft, and VeriSign have signed up to support the new technology. With that kind of backing OpenID is no more a kids toy.
OpenID is of course not the perfect solution for everything
(see for instance idcorner.org) but I would say it is close to perfect for Single Sign On and signing comments in the web/PostNuke world I live in.
If you want to start using your own OpenID then get one at
myopenid.com - it's free and it's all you need.
OpenID in a PostNuke world
PostNuke should of course also have such a thing as OpenID for Single Sign On, user registration, signing comments and so on. So a new OpenID module for Single Sign On and user registration is on it's way (expected release in March or April). Have fun with it.
An OpenID implementation with PostNuke should also enable you to use your PostNuke installation as an Identity Provider, meaning that your OpenID could be YourName.YourSite.com. Hopefully the OpenID module will support this.
Other uses for OpenID in PostNuke could be to sign comments using the ezComments module or pre-allow access to certain Mediashare photo albums through your friends OpenIDs. Only the sky is the limit and OpenID is free for you to use and invent with.
Regards, Jørn Wildt

Generated on February 29, 2008.

Url rewriting on Postnuke 0.8   (News)

Main principles of the mod rewrite


For information, the URL rewriting is a module that you can activated in your apache to rewrite the links of a site in order to simplify their reading.

The idea is that the Pn Team also thought that the mod rewrite was not necessarily available / activated on all types of servers (particularly on Windows servers). Indeed, the Postnuke team offers rewritings based on tips already heavily used in management systems like blogs.

Before you begin, here is the format of a link without rewriting.


without rewriting
index.php?module=Users&func=logout Index.php? Users & module = func = logout


URL rewriting without mod rewrite

This rewriting reproduced a "virtual" Folders system on your site, links look like this


URL rewriting without mod rewrite
index.php/Users/logout



In terms of mechanism, it is very simple, when your Web server receives a request for a link, it loads instinctively page "index.html". In this index.php, the parameters of the request are recovered via the header (you can look in "phpInfo" there is a field $ _SERVER [ 'REQUEST_URI'] which corresponds to this information).Then these parameters are interpreted , between the first two "/" is the name of the module, between the two others, the function name. Now Postnuke know the name of the module and function to launch.

You can pass parameters too, for instance, if you want to load a forum with id=2, the links will look like this

URL rewriting without mod rewrite
index.php/Forum/viewforum/forum:2




Note that the url rewriting uses ":" to represent the parameters in a url. So you can't pass variables like this "index.php?variable=filter:3". (be carefull if you are using Pagesetter and his filters system).



URL rewriting with mod rewrite

Optimizing the previous version

In the previous example, all links contained index.php ... but it's ugly, and functionally this file contains no
information useful to load the asked module.This trick is useful when you have no mod rewrite, but if one has an "mod rewrite enabled" server,you can use a "lighter" version of the previous rewriting without an "index.html"



Here is an example



URL rewriting with mod rewrite :Optimizing the previous version
/Users/logout




Be careful, if one of your pictures is written this way and you load the page /MyModule/main/. "/MyModule/main/test.png" which will be searched. Note that you can make a rewriting that redirect all links of the form "/*/*/*.(jpg | png | gif)" to "$ 3. (Jpg | png | gif)." (but it's ugly).


Mode file


This url rewriting is the classical version already used in previous versions of the cms, The rewrited links are lists of words (module name, the name of function) separated by dashes. Note that this version uses a large number of regular expressions rules to do the rewriting compared to the other one, which may increase the load of your server Web.



One example here ...
URL rewriting with mod rewrite : Mode file
module-Forum-viewtopic-topic-2903-start-0.html





Note that the "module" which one would have thought there's no point in it, is made for the support of the "old style" loading of modules.



URL rewriting customized


So here is the coolest feature, which allows you to customize the URL rewriting depending on the module you want to load. Just create a "encodeurl" function in your API module (pnuserapi) that takes as parameters, the information needed to create for output a fully customized rewrited link.

After, the loading of each page of the CMS, a "decodeurl" function in the API part of the module takes care to reformat the encoded url in a form understandable by the CMS.



You can find an example of the use of this method in the module "Pages" of values addons


Format of a encode and decode url
function pages_userapi_encodeurl($args)
function pages_userapi_decodeurl($args)



This feature is interesting because it allows us to have the hands on your url, not only before loading the page, but after loading this page, allowing you post-processing actions rather interessant.




This method allow you to

- put keywords in the url: (see Pages module)
- have a single version of your rewrited url : Indeed, through the post treatment you can recalculate the url and it does not conform to your requirements, you can redirect to the good link via a redirect 301 "Moved Permanently headers.






Use case of a url rewriting "no duplicate"



Notes: A small problem nevertheless for the use of this rewriting, which is limited to the type url "user". (more details here)

This article is a translation from this "how to" released on Postnuke-France

Generated on February 25, 2008.

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