HowTo Config

Defining an Abstract Class with Restrictive Constructors in PHP 5

Dev Shed - RSS Feeds — Tue, 09 Mar 2010 14:00:09 +0000

In this second part of a four-part series, I rebuild the example application developed in the previous tutorial. As you'll recall, it used a protected constructor to prevent the instantiation of the base array iterator class. In this case, a better result will be achieved by declaring the iterator abstract; still, the example demonstrates a simple utilization of a restrictive constructor in a concrete situation.
- Unquestionably, the introduction of a more robust object model in PHP 5 has provided developers with additional features that allow them to build efficient and thorough object-oriented applications without the need to appeal to the ugly programming hacks used frequently in the bad old days of PHP ...

Willy Sudiarto Raharjo: Running Rsync Via Proxy

admin — Tue, 09 Mar 2010 07:02:00 +0000

One way to get the latest Slackware updates is by running rsync to syncronize your local repository and the main repository that hold the Slackware packages. Eric Hameleers has provided a great script called rsync_current.sh and how i modified this tool has been discussed on my previous post. In general, it works, except for one problem, when your computer is connecting to the Internet through a proxy.

My workstation at my office is connected to the Internet through a proxy, so i can't use normal rsync to work normally. I browsed the web and i found this site which tells us about how we should modify our squid configuration to allow rsync connection from any computer from our local networks. I asked my sysadmin to try this script. He agreed and he updated the squid configuration on the proxy.

Next, i need to update my environment variable RSYNC_PROXY to the host of the proxy and also the port. Let's say you are running a proxy on 192.168.1.1 and port 8080, then you need to run export RSYNC_PROXY="192.168.1.1:8080 and then you can start running your rsync command (or script in my case).

Remember that this change is not permanent. It will last until you close your terminal, so the solution is to add this line into your ~/.bash_profile or /etc/profile if you want it to be globaly available to all of your users.

If you want to run the script periodically, you can use cronjobs to do it for you. I set to download the update from Slackware mirrors at around 11 PM at night when the bandwidth is not utilized.

Hope this small article helps you out to work with rsync when you are behind a proxy

Dua kampus di solo berlomba-lomba membuat Linux

admin — Tue, 09 Mar 2010 02:14:08 +0000

Linux Sinau, itulah linux yang di promotori ficos UNS Linux Tajdid, Itulah linux yang di promotori POSS UMS, Website resminya ada di http://tajdidlinux.org

Willy Sudiarto Raharjo: Security Update: HTTPD

admin — Tue, 09 Mar 2010 00:05:00 +0000

Apache has just released a security update for httpd package and Slackware-Current has included the fix on the latest batch. It fixed three problems described on the Changelog.

Other news is that cupsddk is now being part of the main CUPS package, so we don't need separate package, thus cupsddk package is now removed. OpenSSH is also upgraded to the latest version, which is a major upgrade.

Here's the latest -Current changelog:

Mon Mar 8 20:49:02 UTC 2010
ap/cupsddk-1.2.3-i486-2.txz: Removed.
The CUPS Driver Development Kit (DDK) is part of the main CUPS package now.

ap/hplip-3.10.2-i486-1.txz: Upgraded.

n/httpd-2.2.15-i486-1.txz: Upgraded.
This update addresses a few security issues.
mod_ssl: A partial fix for the TLS renegotiation prefix injection attack by rejecting any client-initiated renegotiations.
mod_proxy_ajp: Respond with HTTP_BAD_REQUEST when the body is not sent when request headers indicate a request body is incoming; not a case of HTTP_INTERNAL_SERVER_ERROR.
mod_isapi: Do not unload an isapi .dll module until the request processing is completed, avoiding orphaned callback pointers.
[This is the most serious flaw, but does not affect Linux systems]
For more information, see:
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2009-3555
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0408
http://cve.mitre.org/cgi-bin/cvename.cgi?name=CVE-2010-0425
(* Security fix *)

n/openssh-5.4p1-i486-1.txz: Upgraded.

Keluarga Besar UBUNTU

admin — Mon, 08 Mar 2010 20:19:52 +0000

repost : http://mashendri.com/ubuntu-dan-keluarganya.html/ Hari gini siapa sich yang nggak kenal ubuntu…? Distro linux terlaris versi distrowatch.com ini ternyata memiliki banyak turunan dalam keluarganya. Tentunya Ubuntu tidak sembarangan membuat banyak sekali produknya tersebut, karena dari masing-masing produk tersebut memiliki keunggulan dan fungsinya masing-masing. Berikut perbedaan dan fungsi masing-masing produk ubuntu tersebut. UBUNTU Distro linux turunan dari [...]

The Reflection API: Working with Reflected Methods

Dev Shed - RSS Feeds — Mon, 08 Mar 2010 14:00:12 +0000

This third part of a seven-part series explores the methods of the PHP Reflection API. You will learn how to take advantage of their functionality to retrieve useful information about the methods defined by a reflected class.
- One of today's most powerful approaches for retrieving information about the internal structure of classes and interfaces in PHP 5 is via the language's native reflection API. What's more, not only does this API comes packaged with a huge variety of methods that let developers perform all sorts of ...

Willy Sudiarto Raharjo: Latest CUPS and Canon Problem Fixed

admin — Mon, 08 Mar 2010 02:34:00 +0000

Today, i wanted to print something, but i noticed the printer is not responding to my request. It seems the latest CUPS in -Current has made some changes so that it didn't detect my printer anymore (it's a major upgrade after all). I have tried to remove my printer and re-adding it again, but i'm stuck with this error message: Bad device-uri "cnij_usb:/dev/usb/lp0"!

When i read this thread in LQ, i realized that i didn't have the same problem (the problem in LQ did happened on my workstation at my office where i got a blank paper instead of a text). So, i searched for solution on the Internet and i got to Gentoo BugZilla which said about cnijfilter-common 3.00 package. Mine is 2.7.0 which i got from official repository of Canon.

I searched the Internet and got this package (3.00) from Canon Asia Support and i converted it to tgz using rpm2tgz application provided in Slackware and i removed the old cnijfilter-common package and install this new package. Next, i restarted my CUPS service and i'm able to get my printer working again after re-adding it again.

The correct device URI is supposed to be cnijusb:/dev/usb/lp0 which is fixed with the latest cnijfilter-common package.

I hope this helps when you encounter a problem with Canon printers and you are using CUPS 1.4.x.

Willy Sudiarto Raharjo: Minor Kernel Tweak

admin — Mon, 08 Mar 2010 01:39:00 +0000

Pat has just updated two kernel packages in -Current to improve it's compatibility and also upgraded libarchive to 2.8.0. It's a small updates, but this should fix some problems with the huge kernel after the introduction of XOrg and 2.6.33 few days ago.

Multimedia pada openSUSE 11.2

admin — Sun, 07 Mar 2010 07:18:38 +0000

Sebagian besar kebutuhan pokok seorang pengguna komputer adalah multimedia, misalnya musik atau film. Tanpa hal tersebut, hidup ini terasa hampa . Akan tetapi seperti kebanyakan linux, misalnya openSUSE dan distro-distro lain, dukungan untuk beberapa format multimedia tidak dapat disertakan karena proprietary mereka dipatenkan, atau biasa disebut sebagai Restricted Formats. Beberapa format itu di antaranya adalah MP3, MPEG-4, DVD, dll. Dengan demikian kita perlu sedikit melakukan konfigurasi agar format-format tersebut dapat kita nikmati.

Caranya tidak terlalu susah, cukup tambahkan repository packman lalu install:
- Menambahkan repository packman :

# zypper ar http://packman.jacobs-university.de/suse/11.2/ packman-Germany

packman-Germany : nama paket repository, ini bisa diubah sesuai keinginan kita.

- Mencari paket codec

# zypper se codec
New repository or package signing key received:
Key ID: 45A1D0671ABD1AFB
Key Name: PackMan Project (signing key) 
Key Fingerprint: F8875B880D518B6B8C530D1345A1D0671ABD1AFB
Repository: packman-Germany

Do you want to reject the key, trust temporarily, or trust always? [r/t/a/?] (r):

Ketikkan huruf “t” (tanpa tanda petik), bahwa kita percaya (trust) dengan sign key tersebut.

Building repository 'packman-Germany' cache [done]
Loading repository data...
Reading installed packages...

S | Name                      | Summary                                                      | Type
--+---------------------------+--------------------------------------------------------------+-----------
| jakarta-commons-codec     | Implementations of common encoders and decoders              | package
| k3b-codecs                | A Universal CD and DVD Burning Application Build Environemnt | package
| k3b-codecs-debuginfo      | Debug information for package k3b-codecs                     | package
| kde3-k3b-codecs           | MP3 Encoding and Video Decoding/Encoding Plugins             | package
| kde3-k3b-codecs-debuginfo | Debug information for package kde3-k3b-codecs                | package
| libAtlasCodecs-0_6-1      | Shared library for Atlas protocol                            | package
| libavcodec52              | Ffmpeg libavcodec                                            | package
| libxine1-codecs           | Xine plugins for watching DVDs, DivX and more                | package
| opensuse-codecs-installer | Cross platform codec installation for openSUSE               | package
| w32codec-all              | Win32 and other binary Codecs                                | package
| w32codec-all              | Win32 and other binary Codecs                                | srcpackage

- Install paket-paket format multimedia.

# zypper in kde3-k3b-codecs libxine1-codecs libavcodec52 w32codec-all

Problem: nothing provides libvcdinfo.so.0 needed by libxine1-codecs-1.1.18.1-1.pm.36.1.i586
Solution 1: do not ask to install a solvable providing libxine1-codecs
Solution 2: break libxine1-codecs by ignoring some of its dependencies

Choose from above solutions by number or skip, retry or cancel [1/2/s/r/c] (c):

Ketikkan pilihan 2 agar dependensi yang dibutuhkan terpenuhi sehingga paket-paket bisa diinstall dengan sempurna.

Tunggulah sampai instalasi selesai, selanjutnya kita bisa menikmati format restricted multimedia yang awalnya tidak bisa kita jalankan.

Pelatihan Linux

admin — Sun, 07 Mar 2010 04:06:25 +0000

LUGU akan melakukan pelatihan linux, yang rencananya diselenggarakan di PTIK Unhas, tanggal 13 maret jam 10.

Materi pelatihan linux meliputi :
- instalasi
- konfigurasi
- multimedia
- aplikasi tambahan
- troubleshooting

Fasilitas ;
- sertifikat
- modul
- lunch

Biaya kontribusi : Rp. 50.000,-