Tag: upload

How to wordpress secure file upload using apache rules

WordPress tutorial, How to wordpress secure file upload using apache rules, Here we given apache rule for secure your wordpress file upload functionality.

How to wordpress secure file upload using apache rules

Website security is most important point of any website. In wordpress we need to give 777 permission to wp-content/uploads folder. Some time we don’t want to give the 777 (read, write and execute) permission to folder due to security reason but wordpress do not allow you to upload images or media files to uploads folder.

Tip: Do not give 777 permission to wp-content/uploads folder. In stead change user ownership to apache folder.

Security

What you can do is. You can restrict other file types to upload in uploads folder using simple apache rule. following code you can use in .htaccess file.


	Order Allow,Deny
	Deny from all

<FilesMatch ".(jpg|jpeg|jpe|gif|png|tif|tiff)$">
	Order Deny,Allow
	Allow from all

Using above code you can secure your uploads folder and only selected files can be pushed into uploads folder.

How to wordpress secure file upload using apache rules
How to wordpress secure file upload using apache rules

how to convert video to flv using php

Tutorial for how to convert video to flv using php. Most of video upload sites are using the ffmpeg and php for uploading and converting the video files.  For converting you need to install the ffmpeg on your server. you can download and install ffmpeg from following location.

how to convert video to flv using php

how to convert video to flv using php
how to convert video to flv using php

http://www.ffmpeg.org/download.html

For installting the ffmpeg on linux box I found following article very helpful

http://mysql-apache-php.com/ffmpeg-install.htm

After installing the ffmpeg on your system you can use following commands for converting the video files to flv format.

avi to flv convert through ffmpeg

ffmpeg -i 00138.avi  -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv final.flv

For creating the thumbnail the from video file you can use the folowing command.

create thubnail from movie file
ffmpeg -y -i moviefile.avi -vframes 1 -ss 00:01:60 -an -vcodec png -f rawvideo -s 110×90 new.png

In PHP you can use the following code easily.


$video_file = '/pathtovideo/test.avi';

$flvfile ='/pathtoflv/test.flv';

$png_path ='/pathtopng/test.png';

exec("ffmpeg -i ".$video_file."  -ab 56 -ar 44100 -b 200 -r 15 -s 320x240 -f flv ".$flvfile.");

//for thumbnail

exec("ffmpeg -y -i ".$video_file." -vframes 1 -ss 00:01:60 -an -vcodec png -f rawvideo -s 110x90 ".$png_path.");

Above code with convert the video file to flv format but my suggestion is convertion of video files will take so much bandwidth on server so use cronjob for converting the video files in night time.

Paperclip with Rails for image manipulation

I used the spree e-Commerce CMS for checking or R&D of Spree code. Spree is the really nice and basic tool for e-Commerce CMS.

When i was going through Spree i got to know about paperclip plugin which is used for image manipulation. Earlier i used “attachment_fu” for image manipulation and file uploading in rails projects.

How to use “Paperclip‘

First install perperclip plugin to your project.

Windows and Linux user can use my code. (I used this in WindowsXP and Fedora 9)

#ruby script /plugin install https://svn.thoughtbot.com/plugins/paperclip/trunk/

through this command perperclip get installed in your project folder.

Many time you need photo upload functionality for customer

Here i used Customer contoller and Customer model for this lession

First run following command

#ruby script/generate paperclip ModelName FieldName

In my case command is:

#ruby script/generate paperclip Customer customer_pic

One migration file will be created through this command. Run that migration.

In Customer model file paste this code:

class Customer < ActiveRecord::Base
# Paperclip
has_attached_file :customer_pic,
:styles => {
:thumb=> "100x100#",
:small => "150x150>" }
end

Using this command you will save three pic(photo) in your system folder.

Default upload url of peperclip is (RAILS_ROOT/public/system/…)

You can use following lines in your model file. (copy & paste this code under styles code)

:url => “/uploads/:class/:attachment/:id/:style_:basename.:extension”,
:path => “:rails_root/public/uploads/:class/:attachment/:id/:style_:basename.:extension”

I added uploads folder front on :class. That is optional you can remove also.

If you are already having forms for customer and if you want to add that to form. Just use this code in your form tag.

:html => { :multipart => true

and in from <%= f.file_field :customer_pic%>

That sit. you need to add or use following code in View

<%= image_tag @user.customer_pic.url %>

<%= image_tag @user.customer_pic.url(:thumb) %>

Paperclip Validations

Here i giving some validation for Paperclip. You need to just copy & paste in to your model where you want to use image upload.

validates_attachment_content_type :avatar, :content_type => 'image/jpeg'

validates_attachment_presence :avatar

I found this plugin is very usefull for Me. It really saves lots of time.