Marius van Witzenburg We fight for our survival, we fight!

26Sep/110

How to easy CVS update your SRC and Ports tree with a simple Bash script (v2)

Posted by mariusvw

This is an update to this post: How to easy CVS update your SRC and Ports tree with a simple Bash script

I adjusted the script to use the local csup version of the FreeBSD World system and moved the cvsup files to /etc.

First install a simple tool to get the fastest cvs server

pkg_add -r fastest_cvsup

Or from Ports (if you have the collection already):

cd /usr/ports/sysutils/fastest_cvsup/
make install clean

Setup config and binary to easy update the repository for SRC and PORTS.

mkdir /etc/cvsup
cd /usr/share/examples/cvsup
cp stable-supfile /etc/cvsup
cp ports-supfile /etc/cvsup
cp doc-supfile /etc/cvsup
cd /etc/cvsup

Edit stable-supfile and change:

*default release=cvs tag=RELENG_8_2

Set this to your release version.

Edit /usr/local/sbin/runcvsup and add:

#!/bin/sh
arg=$@
sType="tld,nl" # Can be: all / tld / tld,nl,de,fr,us
if SERVER=`/usr/local/bin/fastest_cvsup -q -c $sType`; then
    echo "Using server: ${SERVER}"
    case "$arg" in
    "stable")
        echo "Updating: stable"
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/stable-supfile
    ;;
    "ports")
        echo "Updating: ports"
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/ports-supfile
    ;;
    "doc")  
        echo "Updating: doc"
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/doc-supfile
    ;;
    *)
        echo "Updating: all"
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/stable-supfile
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/ports-supfile
        /usr/bin/csup -L 2 -g -z -h ${SERVER} /etc/cvsup/doc-supfile
    ;;
    esac    
fi

Set the right permissions:

chmod 700 /usr/local/sbin/runcvsup

Update everything:

runcvsup
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27Aug/110

How to “disable” the VLAN1 on a Cisco SLM 2048 switch

Posted by mariusvw

I have been busy with this but with a wrong way of thinking...

How you can disable it? Simple, leave it on VLAN1 and move all ports except one to another VLAN.

You can do this in the port configuration, set the ports to your own VLAN by changing the PVID (VLAN ID).

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17Jul/113

How to download sexdumpert.nl photo’s or video’s with a simple Bash script

Posted by mariusvw

Here is the simple script which downloads all photos from sexdumpert.nl

Just save the file as run.sh in a directory and run it. It will save all photos found.

#!/bin/bash
 
if [ ! -d 'files' ]
then
    mkdir files
fi
 
for ((a = 0; a <= 999; a++))
do
    ca=`printf "%03d" $a`
    for ((b = 0; b <= 999; b++))
    do
        cb=`printf "%03d" $b`
        for ((c = 0; c <= 999; c++))
        do      
            cc=`printf "%03d" $c`
            for ((d = 0; d <= 999; d++))
            do      
                cd=`printf "%03d" $d`
 
                url="http://mediadata.sexdumpert.nl/$ca/$cb/$cc/$cd.jpg"
                echo $url
                /usr/bin/curl $url -o "files/$ca-$cb-$cc-$cd.flv"
 
            done    
        done    
    done    
done

Here is the simple script which downloads all video's from sexdumpert.nl

Just save the file as run.sh in a directory and run it. It will save all video's found.

#!/bin/bash
 
if [ ! -d 'files' ]
then
    mkdir files
fi
 
for ((a = 0; a <= 999; a++))
do
    ca=`printf "%03d" $a`
    for ((b = 0; b <= 999; b++))
    do
        cb=`printf "%03d" $b`
        for ((c = 0; c <= 999; c++))
        do      
            cc=`printf "%03d" $c`
            for ((d = 0; d <= 999; d++))
            do      
                cd=`printf "%03d" $d`
 
                url="http://mediadata.sexdumpert.nl/$ca/$cb/$cc/$cd.flv"
                echo $url
                /usr/bin/curl $url -o "files/$ca-$cb-$cc-$cd.flv"
 
            done    
        done    
    done    
done

Hope this for fills some people their needs ;-)

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17Jul/110

How to check if a key exists in an array with in_array for Bash

Posted by mariusvw

When working with Bash it might become handy to have a way to check if a record exists in an array. In PHP you have in_array for this... The below code adds a function similar to the PHP variant.

function in_array() {
  local x
  ENTRY=$1
  shift 1
  ARRAY=( "$@" )
  [ -z "${ARRAY}" ] && return 1
  [ -z "${ENTRY}" ] && return 1
  for x in ${ARRAY[@]}; do
    [ "${x}" == "${ENTRY}" ] && return 0
  done
  return 1
}
 
MASTER=()
CURRENT=()
FIRST=1
for SERVER in ${SERVERS}; do
  # collect all builds from server and populate CURRENT list
  COMMAND="${LS} -1fd ${WEBROOT}/${SITE}.*"
  BUILDS=`${SSH} ${SSHOPTS} root@${SERVER} "${COMMAND}"`
  for BUILD in ${BUILDS}; do
    CURRENT=( ${CURRENT[@]-} ${BUILD} )
  done
 
  # if this is our first time around, copy CURRENT to MASTER
  if [ ${FIRST} -eq 1 ]; then
    MASTER=( ${CURRENT[@]} )
    FIRST=0
  fi
 
  # now we do a compare between MASTER and CURRENT to see what builds
  # are common
  INTERSECT=()
  for ENTRY in ${CURRENT[@]}; do
    in_array "${ENTRY}" "${MASTER[@]}"
    RET=$?
    if [ "${RET}" -eq 0 ]; then
      INTERSECT=( ${INTERSECT[@]-} ${ENTRY} )
    fi
  done
  MASTER=( ${INTERSECT[@]} )
 
  # clear the CURRENT array
  CURRENT=()
done

Source: http://mykospark.net/tag/in_array/

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17Jul/110

How to add Base64 encoding and decoding in C

Posted by mariusvw

I found this page on the web while searching for something else but I thought this might be useful to others :-)

Overview
libb64 is a library of ANSI C routines for fast encoding/decoding data into and from a base64-encoded format. C++ wrappers are included, as well as the source code for standalone encoding and decoding executables.

Base64 uses a subset of displayable ASCII characters, and is therefore a useful encoding for storing binary data in a text file, such as XML, or sending binary data over text-only email.

Usage

#include <b64/encode.h>
#include <iostream>
int main() {
	base64::encoder E;
	E.encode(std::cin, std::cout);
	return 0;
}

You can read more info and download the package on the url below:

http://libb64.sourceforge.net/

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14Jul/110

How to grab the mouse position in a browser with jQuery and HTML5

Posted by mariusvw

Depending on what your plans are it might become handy to know the mouse position.
The script below gives you the position relative to the page, relative to the browser window and relative to the DIV with the green color.

HTML (index.html)

<!DOCTYPE html>
<html>
<head>
    <script src="http://code.jquery.com/jquery-latest.js"></script>
    <script src="javascript.js"></script>
    <link href="style.css" type="text/css">
</head>
<body>
    <div id="object"></div>
    <div id="page" class="info">Page: <span></span></div>
    <div id="client" class="info">Client: <span></span></div>
    <div id="container" class="info">Container: <span></span></div>
</body>
</html>

CSS (style.css)

* {
    margin: 0px;
    border: 0px;
    padding: 0px;
}
#object {
    width: 595px;
    height: 842px;
    margin: 10px;
    background: #cfc;
    border: 1px solid #666;
    float: left;
}
.info {
    padding-top: 100px;
}

JavaScript (javascript.js)

$(function() {
    $("#object").mousemove(function(e) {
        var pageCoords = "( " + e.pageX + ", " + e.pageY + " )";
        var clientCoords = "( " + e.clientX + ", " + e.clientY + " )";
        var cLeft = e.pageX - $(this).offset().left;
        var cTop = e.pageX - $(this).offset().top;
        var containerCoords = "( " + cLeft + ", " + cTop + " )";
        $("#page span").text("( e.pageX, e.pageY ) - " + pageCoords);
        $("#client span").text("( e.clientX, e.clientY ) - " + clientCoords);
        $("#container span").text("( e.clientX, e.clientY ) - " + containerCoords);
    }).click(function(e) {
        var x = e.pageX - this.offsetLeft;
        var y = e.pageY - this.offsetTop;
        var containerCoords = "( " + x + ", " + y + " )";
        alert("You clicked: ( e.clientX, e.clientY ) - " + containerCoords);
    });
});

Related links:
http://docs.jquery.com/Tutorials:Mouse_Position

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13Jul/110

How to modify HTTP headers with PHP header() function

Posted by mariusvw

Many examples that show how to use the header() function of PHP.

Hint:
If you want to check your headers, you can use web based tools like: web-sniffer.net, web-browser extensions (e.g. LiveHTTPHeaders, ieHTTPHeaders) or another third-party software tool.

// See related links for more status codes
 
// Use this header instruction to fix 404 headers
// produced by url rewriting...
header('HTTP/1.1 200 OK');
 
// Page was not found:
header('HTTP/1.1 404 Not Found');
 
// Access forbidden:
header('HTTP/1.1 403 Forbidden');
 
// The page moved permanently should be used for
// all redrictions, because search engines know
// what's going on and can easily update their urls.
header('HTTP/1.1 301 Moved Permanently');
header('Location: ' . $url);
exit();
 
// Server error
header('HTTP/1.1 500 Internal Server Error');
 
// Redirect to a new location:
header('Location: http://www.example.org/');
 
// Redriect with a delay:
header('Refresh: 10; url=http://www.example.org/');
print 'You will be redirected in 10 seconds';
 
// you can also use the HTML syntax:
// <meta http-equiv="refresh" content="10;http://www.example.org/ />
 
// override X-Powered-By value
header('X-Powered-By: PHP/4.4.0');
header('X-Powered-By: Brain/0.6b');
 
// content language (en = English)
header('Content-language: en');
 
// last modified (good for caching)
$time = time() - 60; // or filemtime($fn), etc
header('Last-Modified: '.gmdate('D, d M Y H:i:s', $time).' GMT');
 
// header for telling the browser that the content
// did not get changed
header('HTTP/1.1 304 Not Modified');
 
// set content length (good for caching):
header('Content-Length: 1234');
 
// Headers for an download:
header('Content-Type: application/octet-stream');
header('Content-Disposition: attachment; filename="example.zip"'); 
header('Content-Transfer-Encoding: binary');
// load the file to send:
readfile('example.zip');
 
// Disable caching of the current document:
header('Cache-Control: no-cache, no-store, max-age=0, must-revalidate');
header('Expires: Mon, 26 Jul 1997 05:00:00 GMT'); // Date in the past
header('Pragma: no-cache');
 
// set content type:
header('Content-Type: text/html; charset=iso-8859-1');
header('Content-Type: text/html; charset=utf-8');
header('Content-Type: text/plain'); // plain text file
header('Content-Type: image/jpeg'); // JPG picture
header('Content-Type: application/zip'); // ZIP file
header('Content-Type: application/pdf'); // PDF file
header('Content-Type: audio/mpeg'); // Audio MPEG (MP3,...) file
header('Content-Type: application/x-shockwave-flash'); // Flash animation
 
// show sign in box
header('HTTP/1.1 401 Unauthorized');
header('WWW-Authenticate: Basic realm="Top Secret"');
print 'Text that will be displayed if the user hits cancel or ';
print 'enters wrong login data';

Source: http://www.jonasjohn.de/snippets/php/headers.htm

Related links:
http://en.wikipedia.org/wiki/List_of_HTTP_status_codes
http://www.web-caching.com/mnot_tutorial/
http://reeg.junetz.de/DSP/node16.html

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10Jul/110

How to update your FreeBSD kernel and World system

Posted by mariusvw

Auto install using freebsd-update

See: How to use freebsd-update to update your FreeBSD kernel and world system

Manual Update World / Kernel

Its advised to run this in Screen, you can install it from /usr/ports/sysutils/screen.

First you have to update the SRC and Ports tree, follow the manual on this page to complete this step.

Next is to configure the make.conf so it won't install things we don't want.
Be sure you check out man make.conf for some make optimalisation settings.

Here is an example that I use:

WITHOUT_X11=yes
NO_GAMES=yes
NO_X=yes
 
# make optimalization (-j4, 4 = optimal for 1 cpu)
MAKEOPTS="-j4 -B"

In case you have edited (which is a 100% chance you did) files of the world installation you might need to edit the mergemaster.rc file and add some settings before running mergemaster.

Check this page to view an example: How to configure mergemaster to merge configurations on FreeBSD.

These are the steps to install a fresh kernel and world system. The TMPDIR that I use is because I disabled the ability to execute files on the standard /tmp mount.

mkdir /tmp_world
setenv TMPDIR /tmp_world
cd /usr/src
make clean
make buildworld
make buildkernel
make installkernel
make installworld

Merge the world system:

mergemaster

Be sure you check out man mergemaster. For example people use the -p argument. This can be handy in some situations.

Remove temp dir:

unsetenv TMPDIR
rm -r /tmp_world

Short versions (might be unsafe):

# Kernel & World
mkdir /tmp_world ; setenv TMPDIR /tmp_world; cd /usr/src; make clean
make buildworld && make buildkernel && make installkernel && make installworld
mergemaster
unsetenv TMPDIR; rm -r /tmp_world
 
# Kernel-only
mkdir /tmp_world ; setenv TMPDIR /tmp_world; cd /usr/src; make clean
make buildkernel; make installkernel
unsetenv TMPDIR; rm -r /tmp_world

Remove builded objects, only after a release upgrade:

cd /usr/obj
chflags -R noschg *
rm -rf *

Custom KERNEL

cd /usr/src/sys/i386/conf/
cp GENERIC YOURKERNEL
echo "# Kernel configuration" >> /etc/make.conf
echo "KERNCONF=YOURKERNEL" >> /etc/make.conf

Compile the same as above, only leave out the buildworld and installworld.

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10Jul/110

How to configure mergemaster to merge configurations on FreeBSD

Posted by mariusvw

Ignore files for upgrade, for example you could add /etc/motd here.

Simply edit the file /etc/mergemaster.rc and add the following line:

IGNORE_FILES='/etc/motd'

Another example:

# Automatically install files that do not exist on the system already
AUTO_INSTALL=yes
 
# Automatically upgrade files that have not been user modified
AUTO_UPGRADE=yes
 
# Preserve files that you replace
PRESERVE_FILES=yes
PRESERVE_FILES_DIR=/var/tmp/mergemaster/preserved-files-`date +%y%m%d-%H%M%S`
 
# Files to always avoid comparing (space separated)
IGNORE_FILES='/etc/motd /etc/rc.conf'

For more information check out the manual page.

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10Jul/110

How to easy CVS update your SRC and Ports tree with a simple Bash script

Posted by mariusvw

Check this updated post: How to easy CVS update your SRC and Ports tree with a simple Bash script (v2)

Its advised to run this in Screen, you can install it from /usr/ports/sysutils/screen.

First install a simple tool to get the fastest cvs server

pkg_add -r fastest_cvsup

Or from Ports (if you have the collection already):

cd /usr/ports/sysutils/fastest_cvsup/
make install clean

Install CVSUP

pkg_add -r cvsup-without-gui

Or from Ports (if you have the collection already):

cd /usr/ports/net/cvsup-without-gui
make install clean

Setup config and binary to easy update the repository for SRC and PORTS.

mkdir /usr/local/etc/cvsup
cd /usr/share/examples/cvsup
cp stable-supfile /usr/local/etc/cvsup
cp ports-supfile /usr/local/etc/cvsup
cp doc-supfile /usr/local/etc/cvsup
cd /usr/local/etc/cvsup

Edit stable-supfile and change:

*default release=cvs tag=RELENG_7_1

Set this to your release version.

Edit /usr/local/etc/cvsup/runcvsup and add:

#!/bin/sh
arg=$@
sType="tld,nl" # Can be: all / tld / tld,nl,de,fr,us
if SERVER=`/usr/local/bin/fastest_cvsup -q -c $sType`
then
        echo "Using server: ${SERVER}"
        case "$arg" in
        "stable")
                echo "Updating: stable"
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/stable-supfile
        ;;
        "ports")
                echo "Updating: ports"
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/ports-supfile
        ;;
        "doc")
                echo "Updating: doc"
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/doc-supfile
        ;;
        *)
                echo "Updating: all"
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/stable-supfile
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/ports-supfile
                /usr/local/bin/cvsup -L 2 -g -z -h ${SERVER} /usr/local/etc/cvsup/doc-supfile
        ;;
        esac
fi

Set the right permissions:

chmod 700 runcvsup

Link the script so it can be reached.

ln -s /usr/local/etc/cvsup/runcvsup /usr/local/bin/runcvsup
rehash

Update everything:

runcvsup
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