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Perl Modules via HTTP Proxy installation, update and install perl CPAN modules behind a Firewall DMZ-ed networks

Friday, May 19th, 2023

If you have to maintain perl script written applications on Linux servers that are sitting behind a very paranoid set-up firewalls
and Local DMZ network, but you still need to maintain the servers and applications versions including perl CPAN (Comprehensive Perl Archive networking) module libraries, you could still do so via another Proxy machine Hub on the Local network, where you either have to manually download all the newest perl versions and CPAN module (libraries) or you can set it up that Proxy machine
to access only a specific Secured internet URLs for perl stuff.

Proxying perl downloads can be done via FTP connects, but as FTP is communicating in plain text and the protocol is known
for not behaving very well behind firewalls, it is a better idea to use for CPAN downloads HTTP or HTTPS protocol.

Normlly Perl is using FTP to download files from the internet. To enable Perl using also HTTP, please install the following RPM:

# yum install perl-libwww-perl

After figure out a CPAN-mirror from http://mirrors.cpan.org/search.cgi?country=Germany, we can start with the configuration from CPAN.

or debian package

# apt install libwww-perl

At the first run from /usr/bin/cpan the initial configuration will be started up which will be done automatically:

[username@linux-host ~]$ cpan

/home/linux-username/.cpan/CPAN/MyConfig.pm initialized.

CPAN is the world-wide archive of perl resources. It consists of about
100 sites that all replicate the same contents all around the globe.
Many countries have at least one CPAN site already. The resources
found on CPAN are easily accessible with the CPAN.pm module. If you
want to use CPAN.pm, you have to configure it properly.

If you do not want to enter a dialog now, you can answer 'no' to this
question and I'll try to autoconfigure. (Note: you can revisit this
dialog anytime later by typing 'o conf init' at the cpan prompt.)

Are you ready for manual configuration? [yes] no

— SNIP — SNAP — SNIP — SNAP — SNIP — SNAP —

commit: wrote /home/linux-username/.cpan/CPAN/MyConfig.pm
Terminal does not support AddHistory.

cpan shell — CPAN exploration and modules installation (v1.7602)
ReadLine support available (try 'install Bundle::CPAN')

cpan> q
Terminal does not support GetHistory.
Lockfile removed.
[username@linux-host ~]$

After the initial configuration you have to run /usr/bin/cpan again, to configure the HTTP-proxy and an alternative HTTP-URL for the default FTP URL:

[username@linux-host ~]$ cpan
Terminal does not support AddHistory.

cpan shell — CPAN exploration and modules installation (v1.7602)
ReadLine support available (try 'install Bundle::CPAN')

cpan> o conf http_proxy http://proxy-host-to-internet.com:8080
http_proxy http://proxy-host-to-internet.com:8080

cpan> o conf urllist push http://mirrors.zerg.biz/cpan/

cpan> o conf commit
commit: wrote /home/linux-username/.cpan/CPAN/MyConfig.pm

cpan> q
Terminal does not support GetHistory.
Lockfile removed.
[username@linux-host ~]$

From now CPAN will load it's files from the internet with the HTTP-proxy:

[username@linux-host ~]$ cpan
Terminal does not support AddHistory.

cpan shell — CPAN exploration and modules installation (v1.7602)
ReadLine support available (try 'install Bundle::CPAN')

cpan> i Example::DB::Oracle
CPAN: Storable loaded ok
CPAN: LWP::UserAgent loaded ok
Fetching with LWP:
http://mirrors.zerg.biz/cpan/authors/01mailrc.txt.gz
Going to read /home/linux-host/.cpan/sources/authors/01mailrc.txt.gz
Fetching with LWP:
http://mirrors.zerg.biz/cpan/modules/02packages.details.txt.gz
Going to read /home/linux-host/.cpan/sources/modules/02packages.details.txt.gz
Database was generated on Thu, 07 Jan 2010 10:44:22 GMT

There's a new CPAN.pm version (v1.9402) available!
[Current version is v1.7602]
You might want to try
    install Bundle::CPAN
    reload cpan
without quitting the current session. It should be a seamless upgrade
while we are running…

Fetching with LWP:
http://mirrors.zerg.biz/cpan/modules/03modlist.data.gz
Going to read /home/linux-username/.cpan/sources/modules/03modlist.data.gz
Going to write /home/linux-username/.cpan/Metadata
Strange distribution name [Example::DB::Oracle]
Module id = Example::DB::Oracle
    CPAN_USERID MSERGEANT (MSERGEANT <msergeant@cpan.org>)
    CPAN_VERSION undef
    CPAN_FILE    M/MS/MSERGEANT/DBIx-AnyDBD-2.01.tar.gz
    INST_FILE    (not installed)

cpan> q
Terminal does not support GetHistory.
Lockfile removed.

Now as the new proxy http URL http://proxy-host-to-internet.com:8080 is set on the machine, to upgrade the existing modules non interactively

# perl MCPAN -e upgrade

or do it the old fashioned way via the MCPAN perl shell:

# perl -MCPAN -e shell

Starting with version 2.29 of the cpan shell, a new download mechanism
is the default which exclusively uses cpan.org as the host to download
from. The configuration variable pushy_https can be used to (de)select
the new mechanism. Please read more about it and make your choice
between the old and the new mechanism by running

o conf init pushy_https

Once you have done that and stored the config variable this dialog
will disappear.

cpan shell — CPAN exploration and modules installation (v2.29)
Enter 'h' for help.

cpan[1]> upgrade
…

That's all folks after a while if no errors are spit during the Perl modules update you'll be at the latest versions of CPAN and modules.

Tags: configure, downloads, gz, home, installation, MCPAN, Perl Modules, read, running, terminal
Posted in Linux, System Administration | 2 Comments »

How to show country flag, web browser type and Operating System in WordPress Comments

Wednesday, February 15th, 2012

!!! IMPORTANT UPDATE COMMENT INFO DETECTOR IS NO LONGER SUPPORTED (IS OBSOLETE) AND THE COUNTRY FLAGS AND OPERATING SYSTEM WILL BE NOT SHOWING INSTEAD,

!!!! TO MAKE THE COUNTRY FLAGS AND OS WP FUNCTIONALITY WORK AGAIN YOU WILL NEED TO INSTALL WP-USERAGENT !!!

I've come across a nice WordPress plugin that displays country flag, operating system and web browser used in each of posted comments blog comments.
Its really nice plugin, since it adds some transperancy and colorfulness to each of blog comments 😉
here is a screenshot of my blog with Comments Info Detector "in action":

Comments Info Detector as of time of writting is at stable ver 1.0.5.
The plugin installation and configuration is very easy as with most other WP plugins. To install the plugin;

1. Download and unzip Comments Info Detector

linux:/var/www/blog:# cd wp-content/plugins linux:/var/www/blog/wp-content/plugins:# wget http://downloads.wordpress.org/plugin/comment-info-detector.zip ... linux:/var/www/blog/wp-content/plugins:# unzip comment-info-detector.zip ...

Just for the sake of preservation of history, I've made a mirror of comments-info-detector 1.0.5 wp plugin for download here
2. Activate Comment-Info-Detector

To enable the plugin Navigate to;
Plugins -> Inactive -> Comment Info Detector (Activate)

After having enabled the plugin as a last 3rd step it has to be configured.

3. Configure comment-info-detector wp plugin

By default the plugin is disabled. To change it to enabled (configure it) by navigating to:

Settings -> Comments Info Detector

Next a a page will appear with variout fields and web forms, where stuff can be changed. Here almost all of it should be left as it is the only change should be in the drop down menus near the end of the page:

Display Country Flags Automatically (Change No to Yes) Display Web Browsers and OS Automatically (Change No to Yes

After the two menus are set to "Yes" and pressing on Save Changes the plugin is enabled it will immediately start showing information inside each comment the GeoIP country location flag of the person who commented as well as OS type and Web Browser 🙂

Tags: action, Auto, blog, Browsers, change, Comment, Comments, configured, country flag, country location, Detector, Display, downloads, Draft, drop, drop down menus, flag web, How to, Inactive, information, installation, Linux, location, mirror, operating system, os type, page, person, plugin, plugin installation, quot, sake, Save Changes, screenshot, show, Stable, time, transperancy, type, unzip, web browser type, web browsers, web forms, wget, Wordpress, Wordpress Comments, writting, www, zip linux
Posted in Web and CMS, Wordpress | 1 Comment »

How to use wget and curl via HTTP Proxy server / How to set a HTTPS proxy server on a bash shell on Linux

Wednesday, January 27th, 2016

linux-ssl-proxy-configuration-from-command-line-with-wget-and-curl-howto

I've been working a bit on a client's automation, the task is to automate process of installations of Apaches / Tomcats / JBoss and Java servers, so me and colleagues don't waste too
much time in trivial things. To complete that I've created a small repository on a Apache with a WebDav server with major versions of each general branch of Application servers and Javas.
In order to access the remote URL where the .tar.gz binaries archives reside, I had to use a proxy serve as the client runs all his network in a DMZ and all Web Port 80 and 443 HTTPS traffic inside the client network
has to pass by the network proxy.

Thus to make the downloads possible via the shell script, writting I needed to set the script to use the HTTPS proxy server. I've been using proxy earlier and I was pretty aware of the http_proxy bash shell
variable thus I tried to use this one for the Secured HTTPS proxy, however the connection was failing and thanks to colleague Anatoliy I realized the whole problem is I'm trying to use http_proxy shell variable
which has to only be used for unencrypted Proxy servers and in this case the proxy server is over SSL encrypted HTTPS protocol so instead the right variable to use is:

https_proxy

The https_proxy var syntax, goes like this:

proxy_url='http-proxy-url.net:8080';
export https_proxy="$proxy_url"

how-to-set-https_proxy_url-on-linux-freebsd-openbsd-bsd-and-unix-from-terminal-console

Once the https_proxy variable is set UNIX's wget non interactive download tool starts using the proxy_url variable set proxy and the downloads in my script works.

Hence to make the different version application archives download work out, I've used wget like so:

wget –no-check-certificate –timeout=5 https://full-path-to-url.net/file.rar

For other BSD / HP-UX / SunOS UNIX Servers where shells are different from Bourne Again (Bash) Shell, the http_proxy and https_proxy variable might not be working.
In such cases if you have curl (command line tool) is available instead of wget to script downloads you can use something like:

curl -O -1 -k –proxy http-proxy-url.net:8080 https://full-path-to-url.net/file.rar

The http_proxy and https_proxy variables works perfect also on Mac OS X, default bash shell, so Mac users enjoy.
For some bash users in some kind of firewall hardened environments like in my case, its handy to permanently set a proxy to all shell activities via auto login Linux / *unix scripts .bashrc or .bash_profile that saves the inconvenience to always
set the proxy so lynx and links, elinks text console browsers does work also anytime you login to shell.

Well that's it, my script enjoys proxying traffic 🙂

Tags: client, command line tool, downloads, export, How to, HTTPS, Linux, net, network, proxy server, rar, shell script, use, wget
Posted in Curious Facts, Everyday Life, IBM AIX UNIX, Linux, Mac OS X, Remote System Administration, System Administration, Various | No Comments »

Resume sftp / scp cancelled (interrupted) network transfer – Continue (large) partially downloaded files on Linux / Windows

Thursday, April 23rd, 2015

resume-sftp-scp-cancelled-interrupted-file-transfer-download-upload-network-transfer-continue-large-partially-downloaded-file-howto-linux-windows
I've recentely have a task to transfer some huge Application server long time stored data (about 70GB) of data after being archived between an old Linux host server and a new one to where the new Tomcat Application (Linux) server will be installed to fit the increased sites accessibility (server hardware overload).

The two systems are into a a paranoid DMZ network and does not have access between each other via SSH / FTP / FTPs and even no Web Access on port (80 or SSL – 443) between the two hosts, so in order to move the data I had to use a third HOP station Windows (server) which have a huge SAN network attached storage of 150 TB (as a Mapped drive I:/).

On the Windows HOP station which is giving me access via Citrix Receiver to the DMZ-ed network I'm using mobaxterm so I have the basic UNIX commands such as sftp / scp already existing on the Windows system via it.
Thus to transfer the Chronos Tomcat application stored files .tar.gz archived I've sftp-ed into the Linux host and used get command to retrieve it, e.g.:

sftp UserName@Linux-server.net
Password:
Connected to Linux-server.
sftp> get Chronos_Application_23_04_2015.tar.gz
….

The Secured DMZ Network seemed to have a network shaper limiting my get / Secured SCP download to be at 2.5MBytes / sec, thus the overall file transfer seemed to require a lot of time about 08:30 hours to complete. As it was the middle of day about 13:00 and my work day ends at 18:00 (this meant I would be able to keep the file retrieval session for a maximum of 5 hrs) and thus file transfer would cancel when I logout of the HOP station (after 18:00). However I've already left the file transfer to continue for 2hrs and thus about 23% of file were retrieved, thus I wondered whether SCP / SFTP Protocol file downloads could be resumed. I've checked thoroughfully all the options within sftp (interactive SCP client) and the scp command manual itself however none of it doesn't have a way to do a resume option. Then I thought for a while what I can use to continue the interrupted download and I remembered good old rsync (versatile remote and local file copying tool) which I often use to create customer backup stragies has the ability to resume partially downloaded files I wondered whether this partially downloaded file resume could be done only if file transfer was only initiated through rsync itself and luckily rsync is able to continue interrupted file transfers no matter what kind of HTTP / HTTPS / SCP / FTP program was used to start file retrieval. rsync is able to continue cancelled / failed transfer due to network problems or user interaction activity), that turned even pretty easy to continue failed file transfer download from where it was interrupted I had to change to directory where file is located:

cd /path/to/interrupted_file/

and issue command:

rsync -av –partial username@Linux-server.net:/path/to/file .

the –partial option is the one that does the file resume trick, -a option stands for –archive and turns on the archive mode; equals -rlptgoD (no -H,-A,-X) arguments and -v option shows a file transfer percantage status line and an avarage estimated time for transfer to complete, an easier to remember rsync resume is like so:

rsync -avP username@Linux-server.net:/path/to/file .
Password:
receiving incremental file list
chronos_application_23_04_2015.tar.gz
4364009472 8% 2.41MB/s 5:37:34

To continue a failed file upload with rsync (e.g. if you used sftp put command and the upload transfer failed or have been cancalled:

rsync -avP chronos_application_23_04_2015.tar.gz username@Linux-server.net:/path/where_to/upload

Of course for the rsync resume to work remote Linux system had installed rsync (package), if rsync was not available on remote system this would have not work, so before using this method make sure remote Linux / Windows server has rsync installed. There is an rsync port also for Windows so to resume large Giga or Terabyte file archive downloads easily between two Windows hosts use cwRsync.

Tags: archive, command, Connected, day, downloads, gz, long time, network, rsync, scp, server hardware, sftp, tar, use
Posted in Everyday Life, Linux, Linux Backup tools, System Administration, Various, Web and CMS | 2 Comments »

Check your Joomla Security with OWASP Joomla Vulnerability Scanner

Wednesday, June 25th, 2014

check-joomla-security-owasp-vulnerability-scanner-tool

If you working in field of Computer Security you should have definitely heard of OWASP (Open Web Application Security Project).
OWASP is very much like MetaSploit – Penetration Testing Framework except it is focusing mostly on web security.
As of time of wrtitting this post OWASP Project is probably the largest contributor in Web Security tools. If you're somehow in the field of Web and Middleware (Security team) or writting Web Application software (with security in mind) OWASP is definitely a project you should study well and the provided tools can help you develop your web services server infrastructure or application design with top security in mind.

One of the famous OWASP tools is Joomla Security Scanner – a toll that can scan and find all potential and present vulnerability in a Joomla (Pure Joomla or Joomla Based website). OWASP Joomla Security Scanner script is written in Perl, making it possible to run on any OS Platform that can run Perl and CPAN modules. Thus Joomla Security Scanner is running on Windows, Linux and Mac OS X.

To use OWASP Joomla Security scanner on Linux (depending on Linux distribution install perl via deb or rpm package manager – most Linux distributions have it already pre-installed).
For Joomla Security scanner on Windows you will have to install one of Perl Windows ports either Active Perl or Strawberry Perl.

Once perl interpreter is up installed, e.g. test it with:

# perl --version

This is perl, v5.10.1 (*) built for x86_64-linux-gnu-thread-multi
(with 61 registered patches, see perl -V for more detail)

Copyright 1987-2009, Larry Wall

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl". If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.

C:Usersggeorgi>perl --version

This is perl 5, version 16, subversion 3 (v5.16.3) built for MSWin32-x64-multi-t
hread
(with 1 registered patch, see perl -V for more detail)

Copyright 1987-2012, Larry Wall

Binary build 1604 [298023] provided by ActiveState http://www.ActiveState.com
Built Apr 14 2014 15:29:45

Perl may be copied only under the terms of either the Artistic License or the
GNU General Public License, which may be found in the Perl 5 source kit.

Complete documentation for Perl, including FAQ lists, should be found on
this system using "man perl" or "perldoc perl". If you have access to the
Internet, point your browser at http://www.perl.org/, the Perl Home Page.

Download Latest Joolma Vulnerability Scanner (here), in case if tool disappears in future a mirrored version for download of Joomla Vulnerability Scanner is (here)
UnZIP the scanner in new created directory start it run Windows command line (I use ConEmu) – Press Windows button + R (and type ConEmu) – or if you don't have conemu cmd.exe, go to whenever the archive was dearchived:

cd UsersgeorgiDownloadsJoomla-scanner

Install all required CPAN perl modules for Joomla Scanner

cpan

This will launch perl cpan installation console, you will see a prompt:

cpan>

The console is a front end which uses Perl's Cpan modules site to download libraries, CPAN is doing quite a good job as it also downloads dependencies if installed perl module has such.

Inside CPAN console type:

install local::lib

Answer any further prompts by simply pressing Enter a lot of times.
Next install App::cpanminus:

install App::cpanminus

Then Exit CPAN, type:

exit

This should have installed cpanminus to test it run in Linux shell / win command prompt:

cpanm

Usage: cpanm [options] Module [...] Try `cpanm --help` or `man cpanm` for more options.

As a last step install Switch from cpanminus:

cpanm -f install Switch

Run Joomla Scanner

perl joomscan.pl

Tags: blogspot, command prompt, cpan, Download Latest Joolma Vulnerability Scanner, downloads, good job, inspect joomla security, Joomla Security Scanner, joomla ssecurity scanner, joomla vulnerability scanner, Linux, OWASP, owasp joomla vulnerability scanner, Perl Windows, securiring joomla, type, Web Application
Posted in Computer Security, Joomla, Various, Web and CMS, Windows | No Comments »

Install TorrentFlux Bit Torrent Web management interface on Debian / Ubuntu Linux

Tuesday, July 15th, 2014

Torrentflux is web based, feature-rich BitTorrent download manager.
Torrentflux is a must have installed server software for anyone who does regular torrent downloads and want to access the downloads from anywhere on the internet.

TorrentFlux is a PHP based BitTorrent controller that runs on a web
server. It can manage all of your BitTorrent downloads from anywhere
through a convenient and easy-to-use web interface.
.
TorrentFlux uses a MySQL database to manage the downloads.

TorrentFlux enables you to run BitTorrent downloads unattended on a monitor-less or remote server 24 hours a day, while still maintaining complete control from any web browser. Now you can control your downloading on your firewall, or keep up with downloads while on vacation. It uses the BitTornado client to download files, and also requires a web server with PHP.

Some of the Torrentflux features:

   * Upload Torrents via URL or File Upload
   * Start, Stop, and Delete Torrents with ease
   * Advanced Torrent start options (ports, speeds, etc.)
   * Multi-user interface
   * RSS Feeds, download Torrents files with a click
   * Run several torrents at once
   * View Download Progress of all torrents at a glance
   * View drive space at a glance
   * View Torrent file meta information
   * Built-in User management and Security
   * Private Messaging
   * Themes (selectable per user)
   * Upload History

Before installing Bittorrent you will need to have a running version of Debian, Ubuntu or any other debian derivative (though it can easily be run on any Linux distro). To install AMP (Apache MySQL Server, PHP) you can follow first part of my previous article Installing Usual PHP Apache MySQL for new Debian GNU / Linux installs.

So what for is TorrentFlux Useful?
Torrenflux is precious and must have if you have to access filtered torrent from outside of your homecountry and you have a running server already in your home country in that I was using TorrentFlux to access Bulgarian Zamunda.Net Torrent Tracker from Holland and was downloading first movies from the Bulgarian Torrent Tracker to my Fluxbox installed on my Dobrich home router and then used FTP to transfer movies to the Netherlands. Talking about many people choose to also install VSFTP and use it together with Torrentflux …

1. Install TorrentFlux and its dependencies (BitTornado, Bittorrent, Zip, Unzip, Bzip etc.) the "Debian Way"

On my Debian 7 Wheezy home machine I run

apt-get install –yes bzip2 php5-gd php5-cli unrar-free grep python net-tools mawk wget unzip cksfv vlc-nox uudeview python-crypto libxml-simple-perl libxml-dom-perl libdbd-mysql-perl bittorrent bittornado

a) Install TorrentFlux the Debian Way

apt-get install –yes torrentflux

You will be prompted with a coule of screens, to set a new MySQL database user and password and SQL database, as well as offered to restart Apache to make Torrentflux accessible like as on below screenshots.

configuring-torrentflux-debian-linux-screenshot-2

configuring-torrentflux-debian-linux-screenshot 3

configuring-torrentflux-debian-linux-screenshot-4

To make new installed torrentflux accessible from web you will either have to configure it via some new Apache VirtualHost or make a symbolic link to /usr/share/torrentflux/www :

cd /var/www/
ln -sf /usr/share/torrentflux/www/ torrentflux

That's all you're all done to access torrentflux either access it via your default configured webserver domain name or via localhost if you're logged in to same pc where installing.

http://www.your-domain.com/torrentflux

http://127.0.0.1/torrentflux

configuring-torrentflux-after-first-login-in-web-debian-linux

2. Install latest Torrentflux version from source

Alternatively if you want to have the latest version (because the Debian version is part of the stable distribution is a little bit outdated you will have to fetch Torrentflux-b4rt and unarchive it:

cd /tmp/
wget http://download.berlios.de/tf-b4rt/torrentflux-b4rt_1.0-beta2.tar.bz2
tar -xjf torrentflux-b4rt_1.0-beta2.tar.bz2

mv torrentflux-b4rt_1.0-beta2 /opt/torrentflux

Then to make torrentflux visible from web server I had to create a symbolic link to installation directory:

ln -sf /opt/torrentflux/html /var/www/torrentflux

For further initial configuration its necessery to make Torrentflux config writtable by www-data (the user with which Apache is running on Debian).

chown -R www-data:www-data /var/www/torrentflux/inc/config/

Next it its required to create somewhere download folder where TorrentFlux will keep downloaded Torrents

mkdir /var/lib/torrentflux

Apache HTTP server will have to have write ther:

chown -R www-data:www-data /var/lib/torrentflux

If you already haven't restarted Apache earlier in installing TorrentFlux pre-requirements, you will have to do it now:

/etc/init.d/apache2 restart

As TorrentFlux depends on its MySQL backend, we need to also create manually TorrentFlux database username and a password

export SQL_DB='torrentflux';
TFLUXSQL_USERNAME='torrentflux';
TFLUX_SQL_PWD='any-secret-password';

echo "CREATE DATABASE IF NOT EXISTS $SQL_DB DEFAULT CHARACTER SET utf8 DEFAULT COLLATE utf8_unicode_ci"
| mysql –user=root –password

echo "GRANT ALL PRIVILEGES ON $SQL_DB.*
TO $TFLUXSQL_USERNAME@localhost
IDENTIFIED BY $TFLUX_SQL_PWD;" | mysql –user=root –password

Substitute with your Database, Username and Password above shell variables – $SQL_DB, $TFLUX_USERNAME, $TFLUX_SQL_PWD

To configure TorrentFlux access it in browser:

http://your-domain.com/torrentflux

By accessing it for a first time, you will redirected to setup.php, in case something goes wrong and yuo're not redirected (probably some mod_rewrite issues add setup.php to url – e.g., acess –

http://your-domain.com/torrentflux/setup.php

I will not enter details, about Web config, because everything there is pretty clear.

Just in short – you will have to now choose:

Choose Database
Choose Database Information of database (put in the exact name of TorrentFlux databse previously created)
Uncheck the box for "Create new database"
Choose as a download location upper created directory – /var/lib/torrentflux

If you get an error on software dependencies screen for missing unrar – just install it
VLC may show an error as well, that's not a problem because VLC is probably not to be used.
Finally after completion of all, you will get an error that setup.php cannot be deleted.

To prevent, someone to re-configure it through http://your-domain/torrentflux/setup.php URL remove setup.php

rm /var/www/torrentflux/setup.php

To prevent someone rewrite anything in config file from web we have to revert back config/ folder not to be writable by Apache

chown -R root:root /var/www/torrentflux/inc/config/

Now in browser to access torrentflux type:

http://ipofyourbox/torrentflux

/torrentflux should redirect you to login.php if for some reason it doesn't type it manually in URL.

First account you will login is the super user account, you can allow multiple users to use it by adding multiple accounts.

torrentflux-install-on-debian-ubuntu-gnu-linux-web-management-torrent-interface

As you will see there is plety of configuration options to play with.

You will definitely want to look in Server Page, some very important page to look is the Transfer Page – from there you can adjust the bandwidth of your connection on 100Mbit network this would be 12500 – to use the maximum possible connection provided by your ISP set the max bandwidth to 0. You have the option to also set a default bittorrent client, by default this will be bittornado.

If you have troubles downloading from TorrentTrackers make sure your router is configured to forward port 49160 to 49300

Now if you have a lot of storage create accounts also for your friends and enjoy torrentflux 🙂

Tags: amp, completion, control, Debian Ubuntu Linux, derivative, downloads, installation, Linux, need, php, ports, setup, software, Start, Transfer Page, var, version, www
Posted in Everyday Life, Linux, Linux and FreeBSD Desktop, System Administration, Web and CMS | 4 Comments »

How to install Java Virtual Machine on Debian 7 GNU / Linux

Wednesday, July 23rd, 2014

Debian 7 stable as most stable Debian releases includes custom Open Source Oracle Java Virtual Machine version called IcedTea OpenJDK, just like with sun's proprietary java, open sourced icedtea fork is made of two components:

JRE – Java Runtime Environment

and

JDK – Java Development Kit).

1. installing OpenJDK Open Source Java Virtual Machine on Debian GNU / Linux

The default meta-package for install java-jre is default-jre meta package which by default on Debian Wheezy points to openjdk:

apt-cache depends default-jdk
default-jdk
Depends: default-jre
Depends: openjdk-6-jdk

If you want to install default Open Source Java Debian package implementation run:

apt-get –yes install default-jre
…
apt-get –yes install default-jdk
…

2. Installing Oracle Java VM 7 on Debian / Ubuntu Linux and deb derivatives
/images/oracle_java_logo-linux-install-debian
Also it is possible to install Oracle Java 7 from binary via apt-get by adding a custom Ubuntu repository containing deb Oracle proprietary java install package called oracle-java7-installer:

echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu precise main" | tee -a /etc/apt/sources.list
apt-key adv –keyserver hkp://keyserver.ubuntu.com:80 –recv-keys EEA14886
apt-get update
apt-get install –yes oracle-java7-installer

Above apt-get command can be used also to install Oracle Sun Java on Ubuntu Linux and other Debian derivatives, for example you can install it like this on Linux Mint and rest of deb based Desktop oriented Linuces …

installing-java-debian-7-linux-install-oracle-java-7-screenshot-1

installing-java-debian-7-linux-install-oracle-java-7-screenshot-2

If you already have the openjdk installed together with oracle java jdk, to make oracle jdk the default Virtual Machine install also oracle-java7-set-default:

apt-get install oracle-java7-set-default

3. Installing Oracle Java 8 the debian way on Debian and Ubuntu Linux

echo "deb http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee /etc/apt/sources.list.d/webupd8team-java.list
echo "deb-src http://ppa.launchpad.net/webupd8team/java/ubuntu trusty main" | tee -a /etc/apt/sources.list.d/webupd8team-java.list
apt-key adv –keyserver keyserver.ubuntu.com –recv-keys EEA14886
apt-get update
apt-get install oracle-java8-installer

4. Install Oracle Proprietary Java on Debian Linux using any version from Oracle website

As some written software requires custom ex-SUN Microsystems and currently owned by Oracle Java proprietary non-free binaries to install them on Debian Linux 7, there is a way to download any sun java jdk version, create .deb package and install the package with dpkg.

Here is how:

a.) Install java-package meta-package

apt-get –yes install java-package

Building dependency tree
Reading state information… Done
The following extra packages will be installed:
autopoint debhelper gettext git git-man html2text intltool-debian liberror-perl libgettextpo0 libmail-sendmail-perl libsys-hostname-long-perl po-debconf rsync
Suggested packages:
dh-make gettext-doc git-daemon-run git-daemon-sysvinit git-doc git-el git-arch git-cvs git-svn git-email git-gui gitk gitweb libmail-box-perl
The following NEW packages will be installed:
autopoint debhelper gettext git git-man html2text intltool-debian java-package liberror-perl libgettextpo0 libmail-sendmail-perl libsys-hostname-long-perl po-debconf rsync
0 upgraded, 14 newly installed, 0 to remove and 112 not upgraded.
Need to get 11.8 MB of archives.
After this operation, 24.7 MB of additional disk space will be used.

b.) Download your desiresd Oracle Java version

Then according to your Debian Linux platform install (32-bit x86 or 64-bit amd64) go in a browser to:

http://www.oracle.com/technetwork/java/javase/downloads/index.html

Accept the agreement and download latest Java release, if you need to install some specific Oracle Java version check out there Old Java download versions (archives) page

Note that in order to download, either you will need some text-browser like elinks or you will need to have a GUI environment with IceWeasel / Epiphany etc. If you're already using the Linux as a desktop environment with GNOME and you used IceWeasel to download java jdk it will be downloaded into /tmp

cd /tmp
make-jpkg <downloaded_jdk_file>

Install the binary package created:

dpkg -i oracle-j2sdk1.7_1.7.0+update44_amd64.deb

Enjoy 🙂

Tags: downloads, echo, How to, Java Development Kit, JDK, JRE, list, need, Open Source Oracle Java Virtual Machine, ppa, run
Posted in Everyday Life, Java, Linux, Linux and FreeBSD Desktop, Various | 1 Comment »

Run native Internet Explorer 6 on latest Debian / Ubuntu Linux with IEs4Linux

Thursday, July 24th, 2014

Install-internet-explorer-on-debian-linux-IEs4Linux_logo.svg
If you're a GNU / Linux Desktop user like me and you have to administrate hybrid server environments running mixture of MS Windows with Microsoft IIS webserver running active server pages (.ASP) developed application or UNIX / GNU Linux servers web applications using Mono as a server-side language, often you need to have browser which properly supports Internet Explorer Trident web (layout) renderer (also famous as MSHTML).

Having Internet Explorer on your Linux is very useful for web developers who want to test how their website works under IE.

Of course you can always install Windows in Virtualbox VM and do your testing in the Virtual Machine but this takes time to install and also puts a useless load to a PC ….

IES4 Linux is a Linux free (open source) shell script that lets you run Internet Explorer on your Linux desktop.

ies4linux scripts collection uses emulation with WINE (Wine is Not Emulator) emulator to run the native Windows Internet Explorer thus before use it you have to install Wine.

There are plenty of tutorials online about ies4Linux, problem is as it is not updated and developed most tutorials doesn't work on Debian Wheezy / Ubuntu and rest of deb based linux distros.
This is why I decided to write just another ies4linux tutorial that actually works!

On Debian / Ubuntu / Mint Linux install via apt-get:

apt-get –yes install wine

Then with a non-root user download ies4linux-latest.tar.gz. Just in case ies4linux-latest.tar.gz disappears in future I've created also a ies4linux-latest.tar.gz mirror for download here

and unarchive tar archive:

wget http://www.tatanka.com.br/ies4linux/downloads/ies4linux-latest.tar.gz
tar -zxvf ies4linux-latest.tar.gz
cd ies4linux-*
./ies4linux

You will get:

IEs4Linux 2 is developed to be used with recent Wine versions (0.9.x). It seems that you are using an old version. It's recommended that you update your wine to the latest version (Go to: winehq.com).

You need to install cabextract first!
Download it here: http://www.kyz.uklinux.net/cabextract.php

To fulfill this requirement you will need to also cabetract package which is luckily part of Debian:

apt-get install –yes cabextract

On wine version 1.0 and onwards winprefixcreate has been changed to winecfg binary.
To prevent missing wineprefixcreate, errors during ies4linux installer run its necessery to symlink as a workaround:

ln -sv /usr/bin/winecfg /usr/bin/wineprefixcreate

To continue with Internet Explorer ies4Linux installater run again:

./ies4linux

images/internet-explorer-for-linux-debian-gnu-linux-screenshot

/images/internet-explorer-4-linux-installer-debian-gnu-linu-screenshot

You will get the installer GUI window with selection option which Internet Explorer version you want. Choose between IE 5.0, IE 5.5 and IE 6. It is also possible to install IE 7 which is still considered beta version and is less tested and unstable, will probably lead to crashes. If you want to install also IE 7 check it as an option from Advanced menu.

/images/ies4linux-internet-explorer-installer-debian-gnu-linux-screenshot

If you get permission errors after running ies4Linux gui installer to solve that chown recursively directory to the user with which you will be running it:

chown -R hipo:hipo ies4linux-2.99.0.1

Internet Explorer for Linux downloader, will connect Microsoft.com website and download DCOM, MCF and various IE required .CAB files.

If you get some ies4linux GUI installer unexpected crashes you can try to download all required IE binaries, surrounding files and flash player using no-gui installer with cmd:

./ies4linux –no-gui –install-corefonts

IEs4Linux 2 is developed to be used with recent Wine versions (0.9.x). It seems that you are using an old version. It's recommended that you update your wine to the latest version (Go to: winehq.com).

IEs4Linux will:
– Install Internet Explorers: 6.0
– Using IE locale: EN-US
– Install Adobe Flash 9.0
– Install MS Core Fonts
– Install everything at: /home/hipo/.ies4linux
[ OK ]

Downloading everything we need
Downloading from microsoft.com:
   DCOM98.EXE
   mfc42.cab
   249973USA8.exe
   ADVAUTH.CAB
   CRLUPD.CAB
   HHUPD.CAB
   IEDOM.CAB
   IE_EXTRA.CAB
   IE_S1.CAB
   IE_S2.CAB
   IE_S5.CAB
   IE_S4.CAB
   IE_S3.CAB
   IE_S6.CAB
   SETUPW95.CAB
   FONTCORE.CAB
   FONTSUP.CAB
   VGX.CAB
   SCR56EN.CAB

Downloading from macromedia.com:
   100% swflash.cab

Downloading from sourceforge.net
   0%   webdin32.exe[ OK ]bdin32.exe

Installing IE 6
Initializing
Creating Wine Prefix
Your wine does not have wineprefixcreate installed. Maybe you are running an old Wine version. Try to update it to the latest version.

To fix the error:

Your wine does not have wineprefixcreate installed. Maybe you are running an old Wine version. Try to update it to the latest version.

vim lib/functiions.sh

Go to line 36 (Type :36 in vim)

Line:

wine –version 2>&1 | grep -q "0.9." || warning $MSG_WARNING_OLDWINE

Has to be changed to:

wine –version 2>&1 | egrep -q "0.9.|-1." || warning $MSG_WARNING_OLDWINE

Also you need to substitute wineprefixcreate to wineboot (if you haven't already symlinked wineprefixcreate to winecfg – as pointed earlier in article.

To do so make following substitution in lib/install.sh and in lib/functions.sh

cp -rpf lib/install.sh lib/install.sh.bak; cat lib/install.sh |sed -e 's#wineprefixcreate#wineboot#g' > lib/install_new.sh; mv lib/install_new.sh lib/install.sh

cp -rpf lib/install.sh lib/functions.sh.bak; cat lib/functions.sh |sed -e 's#wineprefixcreate#wineboot#g' > lib/functions_new.sh; mv lib/functions_new.sh lib/functions.sh

Also it is necessery to change default corefonts download url which points to sourceforge but is failing. I've made mirror of corefonts files here

cp -rpf lib/install.sh lib/install.sh.bak; cat lib/install.sh |sed -e 's#http://internap.dl.sourceforge.net/sourceforge/corefonts/#www.pc-freak.net/files/corefonts/#g' > lib/install_new.sh; mv lib/install_new.sh lib/install.sh

Re-run the ies4linux console installer:

./ies4linux –no-gui –install-corefonts

….
Es4Linux installations finished!

On installation success you should get output like this
Hopefully you will see no errors like in my case, if you get the corefonts download error again re-run the installer and it should succesully download the files.

To then run ies4linux:

~/bin/ie6

internet-explorer-ies4linx-running-on-debian-gnu-linux-screenshot
Though Ies 4 Linux is good for basic testing it is not psosible to use the browser for normal browsing because its a bit buggy and slow.

By default Internet Explorer 6 behavior is to prompt security alert on various actions, though this might be useful for debugging it is really annoying so I personally disabled those by decreasing from:

Tools -> Internet Options -> Security -> (Security Level)
I've decreased it from Medium to Medium-Low

ies4Linux was not developed since 2008 and as of time of writting ies4linux official project website seems abandoned.

Tags: administrate, application, ASP, browser, CAB, Creating Wine Prefix, Debian Ubuntu Linux, downloads, IEDOM, Internet Explorer Trident, layout, lib, mv, need, running, server, tar archive, web
Posted in Linux, Linux and FreeBSD Desktop, System Administration, Various | No Comments »

How to split / rar in parts large data archive files on Linux and Windows – Transfer big files across servers located in DMZ rescticted areas

Friday, November 28th, 2014

how-to-split-rar-in-parts-large-data-archive-files-on-Linux-and-Windows-Transfer-big-files-across-servers-in-firewalled-restricted-areas

I was working on a Application Migration Project whose goal was to Install a business application called Asset Guardian and then move current company Data from the old server to the new AppServer.
For that purpose the company vendor Asset Guardian shipped to a Public access FTP, a huge (12GB) ZIP archive file which had to be transferred into a well secured DMZ-ed corporation network with various implemented Traffic Shaping Network policies, a resctrictive firewall allowing access to Internal Network only and to Few (Restrictive configured) Proxy Server IPs on port 80 and 8080.

One of the proxy servers allowed access to the Internet and I set this one and tried downloading the Huge Archive file with the Windows 2012 server default browser Internet Explorer 10, though the download started it kept slow between ~ 300 – 500KB sec and when reached 3.4GB download failed. I tried resuming the download but as the remote Public FTP server where files resides doesn't support FTP RESUME function.
I thought it might be that Internet Explorer is badly managing the download so, I go forward and installed Portable Firefox (mirrored version 33.1.1 is here). Re-running download with firefox also failed, so the next logical step was for me to try downloading with Windows version of Wget (Wget) and with Portable Free Download Manager 3.9.14.1481 (mirrored here) using both of them was unable to complete download (probably due to firewall or Proxy screwing the proxy inspected traffic) thus I had to look for another way to copy the enormous archive into the company network.

To get around the issue I tried to download the file from FTP to another Server running Apache and tried re-downloading the big file archive (Asset-Guardian-data.zip) from Apache Webserver via HTTP protocol, this download method didn't work neither using plain HTTP protocol for download when downloaded file reached (3.4GB), thus I realized this is due to restrictive Proxy servers (dropping file downloads) bigger than 3.4GBs).

Then to be able to transfer the huge 12GB file, it seems the only left option was to to chop the big file on smaller file chunks and transfer them one by one.
In my case I had the Asset-Guardian-Files.zip transferred already to the Apache (Webserver) host which is running Linux so basicly the task was to Transfer Big archive file between the SuSE Linux Enterprise Server (SLES) 11 and Windows 2012 Server.

Quickesy way to do that is by using UNIX split command, i.e.:

split -b 1024m Asset-Guardian-Files.zip

The outputted files each 1GB are with naming (xaa, xab, xac, xad, xae, xaf, gaf etc.) in same folder where split command is run:

To later merge the files on the Windows 2012 server (copy) command is used:

copy /b file1 + file2 + file3 + file4 filetogether

In my case the command to issue on Win 2012 server was:

copy /b xaa + xab + xac + xae + xae + xaf + xaf + xag xah xai xaj xak Asset-Guardian-files.zip

This method to chop and transfer the file is most simple one and it doesn't require the two servers to have WinRAR or Console RAR / unrar installed.

If instead of Copy Huge File from Linux -> Windows host you need to copy too big file (lets say 100GB) between 2 Windows servers (Windows server host A and Windows server Host B – both situated in different firewall corporate networks) you will need to download to Win Host A and use Windows UNIX split equivalent tool called sfk (The Swiss File Knife) , sfk has port also for Mac OS so in case of need for need for migrating huge archive file from Mac OS X host it will serve as Linux's split – I've made SFK (current version) mirror here.

Another way to cut the 12GB file in parts and transfer to destination host via HTTP was to use rar (on the Linux host), then download the file on Win 2012 server and use Winrar Portable Free to extract the multiple files:

To make archive separate in parts set out to certain size out of a huge file with rar on Linux use:

cd /var/www
rar -a -v1000000k Asset_Guardian_Files.splitted.rar /var/www/Asset_Guardian_Files.zip

10000000Kbs = 10000000/1024 = 976MBs, hence rar produced parts will be sized to 976MB rar parts.

To find out archives check for *splitted*.rar in your /var/www

ls -al /var/www/*splitted*.rar
-rw-r–r– 1 root root 1048576 ное 28 18:34 Asset-Guardian-Files.splitted.part1.rar
-rw-r–r– 1 root root 1048576 ное 28 18:34 Asset-Guardian-Files.splitted.part2.rar
-rw-r–r– 1 root root 1048576 ное 28 18:34 Asset-Guardian-Files.splitted.part3.rar
-rw-r–r– 1 root root 1048576 ное 28 18:34 Asset-Guaridna-Filse.splitted.part4.rar
…

Then to download the files M$ Win 2012 server IE (http://my-linux-host.com/Asset-Guardian-Files.splitted.part1.rar, http://my-linux-host.com/Asset-Guardian-Files.splitted.part2.rar. etc.)

Thanks God, Problem Solved 🙂

Tags: application, archive files, chop, command, copy, data, DMZ, downloads, file, How to, Linux Create, Migration Project, rar, root root, transfer, Windows, Winrar Portable Free, working, zip
Posted in Business Management, Everyday Life, System Administration, Various, Web and CMS, Windows | No Comments »

How to add multi language support to wordpress with qTranslate

Monday, October 3rd, 2011

Lately, I have to deal with some wordpress based installs in big part of my working time. One of the wordpress sites needed to have added a multi language support.

My first research in Google pointed me to WPML Multilingual CMS The WordPress Multilingual Plugin
WPML Multilingual CMS looks nice and easy to use but unfortunately its paid, the company couldn’t afford to pay for the plugin so I looked forward online for a free alternative and stumbled upon QTranslate

QTranslate is free and very easy to install. Its installed the wordpress classic way and the installation went smoothly, e.g.:

1. Download and unzip QTranslate

# cd /var/www/blog/wp-content/plugins /var/www/blog/wp-content/plugins# wget http://downloads.wordpress.org/plugin/qtranslate.2.5.24.zip ... /var/www/blog/wp-content/plugins# unzip qtranslate.2.5.24.zip ...

Just for fun and in case the plugin disappears in future, a mirror of Qtranslate 2.5.24 is found here

2. Enable QTranslate from wordpress admin

Plugins -> Inactive -> qTranslate (Activate)

After activating the plugin, there is a Settings button from which qTranslate‘s various plugin parameteres can be tuned.

In my case my site had to support both English and Arabic, so from the settings I added support for Arabic translation to the wordpress install.

Adding Arabic is done in the following way:

a. From the Language Management (qTranslate Configuration) from the Languages menu and the Languages (Add Languages) I had to choose a language code (in my case a language code of ar – for Arabic). Next I had to choose the Arabic flag from the follow up flag list.

In next text box Name , again I had to fill Arabic, for Locale en_US.UTF-8
The following Date Format and Time Format text boxes are optional so I left them blank.
To complete the process of adding the Arabic as a new language wordpress should support I pressed the Add Language button and the Arabic got added as a second language.

Afterwards the Arabic was added as second language, on the bottom of the left wordpress menu pane a button allowing a switch between English, Arabic appeared (see below screenshot):

Finally to make Arabic appear as a second language of choice on the website I added it as a Widget in the Widgets menu from the AWidgets menu:

Appearance -> Widgets

In widgets I added qTranslate Language Chooser to the Sidebar without putting any kind of Title for qtranslate widget .
I found it most helpful to choose the Text and Image as an option on how to display the Language switching in the wp.

Tags: Activate, alternative, arabi, Arabic, arabic translation, Button, cms, code, company, Date, downloads, flag, flag list, format, fun, google, Inactive, installation, language button, language code, language management, language support, languages, menu, mirror, multilingual, new language, plugin, Plugins, screenshot, second language, settings button, support, text, text boxes, time, time format, time one, unzip, UTF, utf 8, wget, Wordpress, working time
Posted in Various, Web and CMS, Wordpress | 2 Comments »

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How to split / rar in parts large data archive files on Linux and Windows – Transfer big files across servers located in DMZ rescticted areas

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