Yii2 Restful API UploadedFile Hack

ok, here a little hack that i did because i couldn't get the tutorial one working on the following link

http://www.yiiframework.com/doc-2.0/guide-input-file-upload.html

with the following code

namespace app\controllers;

use Yii;
use yii\web\Controller;
use app\models\UploadForm;
use yii\web\UploadedFile;

class SiteController extends Controller
{
    public function actionUpload()
    {
        $model = new UploadForm();

        if (Yii::$app->request->isPost) {
            $model->imageFile = UploadedFile::getInstance($model, 'imageFile');
            if ($model->upload()) {
                // file is uploaded successfully
                return;
            }
        }

        return $this->render('upload', ['model' => $model]);
    }
}

Sadly, no matter how hard you try, $model->imageFile will always equal to null. If you are working on an Upload API, and you are trying to get your image or whatever upload. You might soon figure that this is an impossible task. But if you try to return $_FILES['imageFile'], it does show you some hot stuff which you have uploaded but the given code just doesn't work! Hence, I have a little hack to FORCE it to work for me at least.

By digging the code and logic within yii\web\UploadedFile i came down with the solution below,

namespace app\controllers;

use Yii;
use yii\web\Controller;
use app\models\UploadForm;
use yii\web\UploadedFile;

class SiteController extends Controller
{
    public function actionUpload()
    {
        $model = new UploadForm();

        if (Yii::$app->request->isPost) {
                        $file = $_FILES['imageFile'];
                        $model->imageFile = new UploadedFile( [
                                'name' => $file['name'],
                                'tempName' => $file['tmp_name'],
                                'type' => $file['type'],
                                'size' => $file['size'],
                                'error' => $file['error'],
                                ]);
            if ($model->upload()) {
                // file is uploaded successfully
                return;
            }
        }

        return $this->render('upload', ['model' => $model]);
    }
}

Its exactly the same as what is given just that i manually created the instances instead of using the method getInstance since getInstanceByName also doesn't work. Well, hopefully this help some poor folk out there. Good Luck!

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ping: icmp open socket: Operation not permitted Centos 6 LXC

If you are facing an issue with Centos 6.8 template in LXC. Showing you the error

[[email protected] ~]# ping google.com
ping: icmp open socket: Operation not permitted
[[email protected] ~]# ls -l $( which ping );
-rwsr-xr-x 1 100000 100000 38264 May 10  2016 /bin/ping

everything looks ok but you still can't ping. btw, I'm on unprivileged container. Firing the below works for me.

[[email protected] ~]# setcap cap_net_raw+ep /bin/ping

and you should be able to ping after that.

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Manual Restore Bacula Without Database

OK, another problem i have. I though my data was gone for good although i do remember my Bacula was doing all the backup! And i finally found a way to get those 1TB files back! Well, as much as you don't know anything about Bacula, you do know where those files are stored right? These files are called 'Volume'. And we will be using these volumes to restore our backup! We will be using bacula volume utility tools to assist us in extracting these precious data!

What's in the Bacula Volume?

Before you can do anything at all, the first thing you need to do is to scan your volume to see whether your stuff is located in the volume!

bls -j -V volume-0177 devicenamehere

and the above will show you something like the one below,


Begin Job Session Record: File:blk=0:8814 SessId=161 SessTime=1480534092 JobId=481
   Job=job.name.com.2017-01-20_01.00.00_33 Date=25-Jan-2017 21:26:12 Level=I Type=B
End Job Session Record: File:blk=0:8814 SessId=161 SessTime=1480534092 JobId=481
   Date=25-Jan-2017 22:53:20 Level=I Type=B Files=2 Bytes=942 Errors=0 Status=T

And what's important on the above are SessId and SessTime. So that we can create a Bootstrap file! Create a file call bootstrap.bsr as show below,

Volume = volume-0177
VolSessionId = 161
VolSessionTime = 1480534092

Now, with this information, we will be able to extract the information out of Bacula Volume!

Extracting Bacula Volume?

In order to extract from Bacula volume, there are a few ways to do it. You can either use your bootstrap file as created above and fire the below command

bextract -p -b ./bootstrap.bsr devicename /home

or you can specific which volume you want to extract without using a bootstrap file as show below,

bextract -p -V volume-0177 devicename/home

and file will starts extracting to /home directory where volume-0177 is the file name and devicename is the actual device name you found on /etc/bacula/bacula-sd file that you wish to restore.

The following shows you some options you can add to your command,

Usage: bextract [-d debug_level] <device-name> <directory-to-store-files>
       -b <file>       specify a bootstrap file
       -dnn            set debug level to nn
       -e <file>       exclude list
       -i <file>       include list
       -p              proceed inspite of I/O errors
       -V              specify Volume names (separated by |)
       -?              print this message
  • -p is useful if your backup is like 1TB and it throws off an i/o error after 50 hours of extracting. -p basically prevent that.
  • -i takes in a file path to include only these files or folder to your restoration plan
  • -e takes in a file path to exclude these files or folder out of your restoration plan
  • -V specific a volume as shown on my example
  • -b takes in a file path which is a bootstrap file to tell bextract what you want to do

Now, go save your own ass from getting whoop! Peace out!

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Schedule Rsync Backup From Windows to Linux Server

Windows, WHY ARE YOU ALWAYS SO DIFFICULT! Gosh. Damn you are. This time. i wanted to do schedule a backup from my windows server 2012r2 to my linux backup drive. Its as simple as that (while i though it was at least). Google doesn't help with so many rubbish online. Hence, here is a guide that will help us out (me included)

Environment

Enterprise server (Windows 2012 R2)

This is a windows environment server 2012 R2 where our data is

Backup server (Debian Linux)

This is my backup server where i would like to rsync over.

 

Installation

On Windows server 2012 r2

  • Download cwRsync
  • Unzup cwRsync and copy to "C:\cwRsync".
  • Add "C:\cwRsync\bin" to PATH.
  • Create the directory "C:\cwRsync\home" and "C:\cwRsync\home\USER" (USER should be the name of the user who will run the Rsync in my case its "admin").
  • Create public/private keys with the following command:
  • ssh-keygen -t rsa
    • Paths with "/home/USER/" correspond to the directories that we created in "C:\cwRsync\".
    • Leave the password blank.

On Linux

  • Install openssh-server and rsync.
  • Provide data to a partition (eg.: /backup/).
  • Place the public key in /home/USER/.ssh/ and rename the file to authorized_keys. (assuming its root)

On Windows

  • Test the connection without a password with the following command:
ssh [email protected]
  • Test Rsync:
rsync -v -rlt -z --delete "/myfiles/" "[email protected]:/backups/"
  • where cygdrive is the directory on C:\cygdrive so the above  C:\cygdrive\myfiles
  • To Test Other port
rsync  -e "ssh -p 14000" -arv "--exclude=.svn/" /myfiles [email protected]:/backups/
  • Create a bat file with the rsync command and place it in C:\cwRsync\bin.
  • Schedule execution every day at 0:30 (half past midnight).

Helpful Resources

  • http://stackoverflow.com/questions/34147565/rsync-uid-gid-impossible-to-set-cases-cause-future-hard-link-failure-how-to
  • http://www.smellems.com/tiki-read_article.php?articleId=14
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PID:4 using Port 80 In Windows Server 2012 R2

i will cut the chase, if you are suspecting something is using Port 80 and is trying to find out what is it, here are some suggestion. Try stopping the following services

  • IIS
  • World Wide Web Publishing service
  • IIS Admin Service
  • SQL Server Reporting services
  • Web Deployment Agent Service

And if the  NT Kernel was still listening on port 80, you just hit the jackpot with me. Its BranchCode. Try removing it under "Remove Roles" in "Server Management" as show below,

Once you remove that, restart your server and port 80 should be all yours. Verify using the following command,


netstat -nao | find ":80"

and it should show you this.

Good LUCK!

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