Question

Textbox to accept widget code

Asked by: rohgan

I want to have a textbox where user can type embed code or widget code such as that from youtube or mypspace widget or slideshare and any other widget

What security check is needed to accept or display this? How should I go about accepting widgets?

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Asked On
2007-09-19 at 01:28:33ID22838047
Tags

widget

,

code

,

i

Topics

Hypertext Markup Language (HTML)

,

PHP and Databases

,

Miscellaneous Programming

Participating Experts
3
Points
500
Comments
6

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Answers

 

by: holy007Posted on 2007-09-19 at 04:31:08ID: 19919669

What is your main goal of the textbox what do you want to do with the inserted text?
Your not very clear about that in your question about what the goal is of the whole picture.

 

by: ThGPosted on 2007-09-19 at 06:13:03ID: 19920274

I agree your question is not clear. What kind of code should be pasted in your textarea? Javascript? html iframe?

Show some samples.

 

by: rohganPosted on 2007-09-19 at 08:12:12ID: 19921327

The main goal is to accept a widget to show on users profile page - much like myspace.

Example: Goto any youtube video and look at the embed textbox below video:
http://www.youtube.com/watch?v=fWhflDA2WtU&feature=dir

Many other widgets are listed at:
http://codex.wordpress.org/Plugins/WordPress_Widgets
Some are iframe based, some are javascript based etc

I want the user to be able to enter the code for a widget and then display it on their profile - much like myspace, facebook, etc allow .
The question is what kind of checks (if any) do I need to do so security is not compromised ?

 

by: ThGPosted on 2007-09-20 at 02:43:41ID: 19927062

For html widgets you can try to parse the html markup to ensure only a subset of allowed tag exists (like comments and <iframe>). You may use http://www.php.net/strip_tags function using its second parameter.

For the JavaScript part you are out of luck. Evaluating statically a piece of code to see if it is good or bad is undecidible (see the Turing's Halting Problem). So the best you can do is build a list of regular expressions containing all the allowed javascript widgets, appropriately parametrizing it.

Paste a JavaScript widget example if you want me to show how to build the relative regexp out of it.

 

by: Computer101Posted on 2007-11-08 at 15:10:25ID: 20246303

Forced accept.

Computer101
EE Admin

20120131-EE-VQP-002

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