shadow

Posted on June 10, 2019June 10, 2019 by bot net

It's failing because passwd manipulates a temporary file, 
and then attempts to rename it to /etc/shadow. 
This fails because /etc/shadow is a mountpoint 

-- which cannot be replaced 
-- which results in this error (captured using strace)


   rename("/etc/nshadow", "/etc/shadow") = -1 

   EBUSY (Device or resource busy)
   You can reproduce this trivially from the command line:

# cd /etc
# touch foo
# mv foo shadow
mv: cannot move 'foo' to 'shadow': Device or resource busy
You could work around this by mounting a directory 
  containing my_shadow and my_passwd somewhere else, 
  and then symlinking /etc/passwd and /etc/shadow in the container appropriately:

$ docker run -it --rm -v $PWD/my_etc:/my_etc centos
[root@kutayzorlu.com /]# ln -sf /my_etc/my_passwd /etc/passwd
[root@kutayzorlu.com /]# ln -sf /my_etc/my_shadow /etc/shadow
[root@kutayzorlu.com /]# ls -l /etc/{shadow,passwd}
lrwxrwxrwx. 1 root root 17 Oct  8 17:48 /etc/passwd -> /my_etc/my_passwd
lrwxrwxrwx. 1 root root 17 Oct  8 17:48 /etc/shadow -> /my_etc/my_shadow
[root@kutayzorlu.com /]# passwd root
Changing password for user root.
New password: 
Retype new password: 
passwd: all authentication tokens updated successfully.
[root@kutayzorlu.com /]#

It's failing because passwd manipulates a temporary file,

and then attempts to rename it to /etc/shadow.

This fails because /etc/shadow is a mountpoint

-- which cannot be replaced

-- which results in this error (captured using strace)

rename("/etc/nshadow", "/etc/shadow") = -1

EBUSY (Device or resource busy)

You can reproduce this trivially from the command line:

# cd /etc

# touch foo

# mv foo shadow

mv: cannot move 'foo' to 'shadow': Device or resource busy

You could work around this by mounting a directory

containing my_shadow and my_passwd somewhere else,

and then symlinking /etc/passwd and /etc/shadow in the container appropriately:

$ docker run -it --rm -v $PWD/my_etc:/my_etc centos

[root@kutayzorlu.com /]# ln -sf /my_etc/my_passwd /etc/passwd

[root@kutayzorlu.com /]# ln -sf /my_etc/my_shadow /etc/shadow

[root@kutayzorlu.com /]# ls -l /etc/{shadow,passwd}

lrwxrwxrwx. 1 root root 17 Oct 8 17:48 /etc/passwd -> /my_etc/my_passwd

lrwxrwxrwx. 1 root root 17 Oct 8 17:48 /etc/shadow -> /my_etc/my_shadow

[root@kutayzorlu.com /]# passwd root

Changing password for user root.

New password:

Retype new password:

passwd: all authentication tokens updated successfully.

[root@kutayzorlu.com /]#

PHP – FPDF – Examples

Posted on June 10, 2019June 10, 2019 by bot net

<?php
ini_set("session.auto_start", 0);
require('fpdf.php');
$pdf = new FPDF();
$pdf->AddPage()
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
?>

<?php
ob_start();
require('fpdf.php');
$pdf = new FPDF();
$pdf->AddPage()
$pdf->SetFont('Arial','B',16);
$pdf->Cell(40,10,'Hello World!');
$pdf->Output();
ob_end_flush(); 
?>

<?php

ini_set("session.auto_start", 0);

require('fpdf.php');

$pdf = new FPDF();

$pdf->AddPage()

$pdf->SetFont('Arial','B',16);

$pdf->Cell(40,10,'Hello World!');

$pdf->Output();

<?php

ob_start();

require('fpdf.php');

$pdf = new FPDF();

$pdf->AddPage()

$pdf->SetFont('Arial','B',16);

$pdf->Cell(40,10,'Hello World!');

$pdf->Output();

ob_end_flush();

Smarty Quick Installation

Posted on June 10, 2019June 10, 2019 by bot net

Install Library Files
   * Extrac the  downloaded zip archive 
   * Copy the Smarty library files to your system. 
     - cp -r libs  /usr/local/lib/php/Smarty 

$> cd YOUR_DOWNLOAD_DIR
$> gtar -zxvf Smarty-3.0.tar.gz
$> mkdir /usr/local/lib/php/Smarty
$> cp -r Smarty-3.0/libs/* /usr/local/lib/php/Smarty

/usr/local/lib/php/Smarty/
    debug.tpl
    plugins/
    Smarty.class.php
    sysplugins/


 * You will need four directories setup for Smarty to work.
   These files are for templates, compiled templates, 
   cached templates and config files. 
   You may or may not use caching or config files, 
   but it is a good idea to set them up anyways. 
   It is also recommended to place them outside of the web server document root. 
   The web server PHP user will need write access to the cache and compile 
   directories as well.


In our example, the document root is /web/www.kutayzorlu.com/docs
 and the web server username is "nobody". 
We will keep our Smarty 
files under /web/www.kutayzorlu.com/smarty/. 
If you are using FTP/sFTP, 
your FTP software should help you 
with setting the file permissions. 
775 means user/group = read/write, other = read.


$> cd /web/www.kutayzorlu.com
$> mkdir smarty
$> mkdir smarty/templates
$> mkdir smarty/templates_c
$> mkdir smarty/cache
$> mkdir smarty/configs
$> chown nobody:nobody smarty/templates_c
$> chown nobody:nobody smarty/cache
$> chmod 775 smarty/templates_c
$> chmod 775 smarty/cache

# ---------------------------------------------------------
$> cd /web/www.example.com/docs
$> mkdir myapp
$> cd myapp
$> vi index.php


$ vi     index.php 


<?php

// put full path to Smarty.class.php
require('/usr/local/lib/php/Smarty/Smarty.class.php');
$smarty = new Smarty();

$smarty->setTemplateDir('/web/www.kutayzorlu.com/smarty/templates');
$smarty->setCompileDir('/web/www.kutayzorlu.com/smarty/templates_c');
$smarty->setCacheDir('/web/www.kutayzorlu.com/smarty/cache');
$smarty->setConfigDir('/web/www.kutayzorlu.com/smarty/configs');

$smarty->assign('name', 'Ned');
$smarty->display('index.tpl');

?>

Create Template
command line
$> nano /web/www.kutayzorlu.com/smarty/templates/index.tpl
Edit the index.tpl file with the following:

index.tpl
<html>
  <head>
    <title>Smarty</title>
  </head>
  <body>
    Hello, {$name}!
  </body>
</html>

http://www.kutayzorlu.com/myapp/index.php in our example. 
You should see the text "Hello Ned!" in your browser.


PHP
$smarty->testInstall();

Install Library Files

* Extrac the downloaded zip archive

* Copy the Smarty library files to your system.

- cp -r libs /usr/local/lib/php/Smarty

$> cd YOUR_DOWNLOAD_DIR

$> gtar -zxvf Smarty-3.0.tar.gz

$> mkdir /usr/local/lib/php/Smarty

$> cp -r Smarty-3.0/libs/* /usr/local/lib/php/Smarty

/usr/local/lib/php/Smarty/

debug.tpl

plugins/

Smarty.class.php

sysplugins/

* You will need four directories setup for Smarty to work.

These files are for templates, compiled templates,

cached templates and config files.

You may or may not use caching or config files,

but it is a good idea to set them up anyways.

It is also recommended to place them outside of the web server document root.

The web server PHP user will need write access to the cache and compile

directories as well.

In our example, the document root is /web/www.kutayzorlu.com/docs

and the web server username is "nobody".

We will keep our Smarty

files under /web/www.kutayzorlu.com/smarty/.

If you are using FTP/sFTP,

your FTP software should help you

with setting the file permissions.

775 means user/group = read/write, other = read.

$> cd /web/www.kutayzorlu.com

$> mkdir smarty

$> mkdir smarty/templates

$> mkdir smarty/templates_c

$> mkdir smarty/cache

$> mkdir smarty/configs

$> chown nobody:nobody smarty/templates_c

$> chown nobody:nobody smarty/cache

$> chmod 775 smarty/templates_c

$> chmod 775 smarty/cache

# ---------------------------------------------------------

$> cd /web/www.example.com/docs

$> mkdir myapp

$> cd myapp

$> vi index.php

$ vi index.php

<?php

// put full path to Smarty.class.php

require('/usr/local/lib/php/Smarty/Smarty.class.php');

$smarty = new Smarty();

$smarty->setTemplateDir('/web/www.kutayzorlu.com/smarty/templates');

$smarty->setCompileDir('/web/www.kutayzorlu.com/smarty/templates_c');

$smarty->setCacheDir('/web/www.kutayzorlu.com/smarty/cache');

$smarty->setConfigDir('/web/www.kutayzorlu.com/smarty/configs');

$smarty->assign('name', 'Ned');

$smarty->display('index.tpl');

Create Template

command line

$> nano /web/www.kutayzorlu.com/smarty/templates/index.tpl

Edit the index.tpl file with the following:

index.tpl

<html>

<head>

<title>Smarty</title>

</head>

<body>

Hello, {$name}!

</body>

</html>

http://www.kutayzorlu.com/myapp/index.php in our example.

You should see the text "Hello Ned!" in your browser.

PHP

$smarty->testInstall();

Reference : Smarty Web Site

Changing directory of the overlay and Docker installation images

Posted on January 1, 2018June 10, 2019 by bot net

1) /etc/sysconfig/docker
2) /etc/docker/daemon.json

1) Updating ‘/etc/sysconfig/docker’ file:
   cat /etc/sysconfig/docker

OPTIONS='--selinux-enabled --log-driver=journald
 --signature-verification=false -D -g /home/thiru/docker'
g -> 
specify docker’s root directory

2) Updating /etc/docker/daemon.json


[root@docker-host-1 ~]# cat /etc/docker/daemon.json
{
   "graph": "/home/thiru/docker"
}

1) /etc/sysconfig/docker

2) /etc/docker/daemon.json

1) Updating ‘/etc/sysconfig/docker’ file:

cat /etc/sysconfig/docker

OPTIONS='--selinux-enabled --log-driver=journald

--signature-verification=false -D -g /home/thiru/docker'

g ->

specify docker’s root directory

2) Updating /etc/docker/daemon.json

[root@docker-host-1 ~]# cat /etc/docker/daemon.json

{

"graph": "/home/thiru/docker"

}

Mysql Dump restore Variable Set

Posted on June 10, 2017June 10, 2019 by bot net

Mysql Dump restore Variable Set

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;
/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;
/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;
/*!40101 SET NAMES utf8 */;
/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;
/*!40103 SET TIME_ZONE='+00:00' */;
/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;
/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;
/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;
/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

/*!40101 SET @OLD_CHARACTER_SET_CLIENT=@@CHARACTER_SET_CLIENT */;

/*!40101 SET @OLD_CHARACTER_SET_RESULTS=@@CHARACTER_SET_RESULTS */;

/*!40101 SET @OLD_COLLATION_CONNECTION=@@COLLATION_CONNECTION */;

/*!40101 SET NAMES utf8 */;

/*!40103 SET @OLD_TIME_ZONE=@@TIME_ZONE */;

/*!40103 SET TIME_ZONE='+00:00' */;

/*!40014 SET @OLD_UNIQUE_CHECKS=@@UNIQUE_CHECKS, UNIQUE_CHECKS=0 */;

/*!40014 SET @OLD_FOREIGN_KEY_CHECKS=@@FOREIGN_KEY_CHECKS, FOREIGN_KEY_CHECKS=0 */;

/*!40101 SET @OLD_SQL_MODE=@@SQL_MODE, SQL_MODE='NO_AUTO_VALUE_ON_ZERO' */;

/*!40111 SET @OLD_SQL_NOTES=@@SQL_NOTES, SQL_NOTES=0 */;

Php – SecLib – Encryption

Posted on June 10, 2017June 10, 2019 by bot net

<?php
include('Crypt/RSA.php');

$rsa = new Crypt_RSA();
 
//$rsa->setPrivateKeyFormat(CRYPT_RSA_PRIVATE_FORMAT_PKCS1);
//$rsa->setPublicKeyFormat(CRYPT_RSA_PUBLIC_FORMAT_PKCS1);

//define('CRYPT_RSA_EXPONENT', 65537);
//define('CRYPT_RSA_SMALLEST_PRIME', 64); // makes it so multi-prime RSA is used
extract($rsa->createKey()); // == $rsa->createKey(1024) where 1024 is the key size
?>

<?php

include('Crypt/RSA.php');

$rsa = new Crypt_RSA();

//$rsa->setPrivateKeyFormat(CRYPT_RSA_PRIVATE_FORMAT_PKCS1);

//$rsa->setPublicKeyFormat(CRYPT_RSA_PUBLIC_FORMAT_PKCS1);

//define('CRYPT_RSA_EXPONENT', 65537);

//define('CRYPT_RSA_SMALLEST_PRIME', 64); // makes it so multi-prime RSA is used

extract($rsa->createKey()); // == $rsa->createKey(1024) where 1024 is the key size

$privatekey:
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----
$publickey:
-----BEGIN PUBLIC KEY-----
MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCqGKukO1De7zhZj6+H0qtjTkVxwTCpvKe4eCZ0
FPqri0cb2JZfXJ/DgYSF6vUpwmJG8wVQZKjeGcjDOL5UlsuusFncCzWBQ7RKNUSesmQRMSGkVb1/
3j+skZ6UtW+5u09lHNsj6tQ51s1SPrCBkedbNf0Tp0GbMJDyR4e9T04ZZwIDAQAB
-----END PUBLIC KEY-----

$privatekey:

-----BEGIN RSA PRIVATE KEY-----

MIICXAIBAAKBgQCqGKukO1De7zhZj6+H0qtjTkVxwTCpvKe4eCZ0FPqri0cb2JZfXJ/DgYSF6vUp

wmJG8wVQZKjeGcjDOL5UlsuusFncCzWBQ7RKNUSesmQRMSGkVb1/3j+skZ6UtW+5u09lHNsj6tQ5

1s1SPrCBkedbNf0Tp0GbMJDyR4e9T04ZZwIDAQABAoGAFijko56+qGyN8M0RVyaRAXz++xTqHBLh

3tx4VgMtrQ+WEgCjhoTwo23KMBAuJGSYnRmoBZM3lMfTKevIkAidPExvYCdm5dYq3XToLkkLv5L2

pIIVOFMDG+KESnAFV7l2c+cnzRMW0+b6f8mR1CJzZuxVLL6Q02fvLi55/mbSYxECQQDeAw6fiIQX

GukBI4eMZZt4nscy2o12KyYner3VpoeE+Np2q+Z3pvAMd/aNzQ/W9WaI+NRfcxUJrmfPwIGm63il

AkEAxCL5HQb2bQr4ByorcMWm/hEP2MZzROV73yF41hPsRC9m66KrheO9HPTJuo3/9s5p+sqGxOlF

L0NDt4SkosjgGwJAFklyR1uZ/wPJjj611cdBcztlPdqoxssQGnh85BzCj/u3WqBpE2vjvyyvyI5k

X6zk7S0ljKtt2jny2+00VsBerQJBAJGC1Mg5Oydo5NwD6BiROrPxGo2bpTbu/fhrT8ebHkTz2epl

U9VQQSQzY1oZMVX8i1m5WUTLPz2yLJIBQVdXqhMCQBGoiuSoSjafUhV7i1cEGpb88h5NBYZzWXGZ

37sJ5QsW+sJyoNde3xH8vdXhzU7eT82D6X/scw9RZz+/6rCJ4p0=

-----END RSA PRIVATE KEY-----

$publickey:

-----BEGIN PUBLIC KEY-----

MIGfMA0GCSqGSIb3DQEBAQUAA4GNADCBiQKBgQCqGKukO1De7zhZj6+H0qtjTkVxwTCpvKe4eCZ0

FPqri0cb2JZfXJ/DgYSF6vUpwmJG8wVQZKjeGcjDOL5UlsuusFncCzWBQ7RKNUSesmQRMSGkVb1/

3j+skZ6UtW+5u09lHNsj6tQ51s1SPrCBkedbNf0Tp0GbMJDyR4e9T04ZZwIDAQAB

-----END PUBLIC KEY-----

Reference : http://phpseclib.sourceforge.net/

Encoding Codes

Posted on June 8, 2017June 8, 2019 by bot net

cp1250 (Central Europe)
cp1251 (Cyrillic)
cp1252 (Western Europe)
cp1253 (Greek)
cp1254 (Turkish)
cp1255 (Hebrew)
cp1257 (Baltic)
cp1258 (Vietnamese)
cp874 (Thai)
ISO-8859-1 (Western Europe)
ISO-8859-2 (Central Europe)
ISO-8859-4 (Baltic)
ISO-8859-5 (Cyrillic)
ISO-8859-7 (Greek)
ISO-8859-9 (Turkish)
ISO-8859-11 (Thai)
ISO-8859-15 (Western Europe)
ISO-8859-16 (Central Europe)
KOI8-R (Russian)
KOI8-U (Ukrainian)

Example PHP usage

<?php
require('makefont/makefont.php');

MakeFont('C:\\Windows\\Fonts\\comic.ttf','cp1252');
?>

<?php

require('makefont/makefont.php');

MakeFont('C:\\Windows\\Fonts\\comic.ttf','cp1252');

Page 2 of 3

« 1 2 3 »