Class: Secure Media (apache, browser detection, secure, mod_rewrite)

Name:	Secure Media Support forum
Base name:	`securemedia`
Description:	Protect Flash files from hotlinking by other sites
Search tags:	apache, browser detection, secure, mod_rewrite
Version:	`-`
Required PHP version:	`-`
License:	GNU General Public License (GPL)
All time users:	1527 users
All time rank:	1462
Week users:	4 users
Week rank:	1613

	Supplied by		Groups		Detailed description

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Supplied by:

Name:	Florian Metzger `<e-mail contact>`
Published packages:	1
Country:	Germany - PHP jobs in Germany
Home page:	`http://www.neodelight.com/`
Age:	29
All time rank:	1009
Week rank:	1088

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Innovation Award:

October 2004
Number 4

The unauthorized use of content of one site in another site is an activity that concerns many site owners.

Hotlinking is one type of unauthorized content use that consists in making pages, images and animations appear in one site despite they are being served by the site that really is publishing that type of content.

Hotlinking is problematic not only because it lets unauthorized sites obtain illicit merit for showing unauthorized content, but also because it may cause financial losses by making the owner site pay for the bandwidth to serve content for other sites.

There are solutions to prevent simple hotlinking by rejecting accesses made from unauthorized referring sites. However, these solutions do not work well for blocking hotlinking of Flash animation objects.

This class provides an alternative solution that works well enough for Flash animations embedded in Web pages dynamically generated with PHP.

Manuel Lemos

Groups:

Files and Folders	Listing, accessing and manipulating files and folders	View top rated classes
User Management	User records, authentication and session handling	View top rated classes
Security	Security protection and attack detection	View top rated classes
Flash	Generate and interact with Flash animations	View top rated classes

Detailed description:

The Apache mod_rewrite is often used to protect images and other types of media files from hotlinking from other sites, that make them appear in their pages although they are served from the original sites.

However, mod_rewrite can be used to protect the service of Flash files against hotlinking because these are embedded in pages using the <object> tag and in this case the browsers do not send a referer when requesting the Flash file from the origin server.

This class provides an alternative solution that works by generating a access key that is used to compose the URL used in the object tag but it is only valid only during a limited period of time.

The class takes as options the location of server directory where is the file to be protected, a password and the limit of time during which the access key is valid.

When the class validates the access key, it serves the real Flash file if the key is valid, or serves an error Flash file otherwise.

User ratings:

Ratings	Utility	Consistency	Documentation	Examples	Tests	Videos	Overall	Rank
All time:	`Sufficient (75.0%)`	`Sufficient (75.0%)`	`Sufficient (75.0%)`	`Sufficient (75.0%)`	`-`	`-`	`Sufficient (60.0%)`	605
Month:	Not yet rated by the users

Applications that use this class:

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Files:

File Role Description

CSecureMedia.php Class the main class

README Doc. documentation

securemedia.php Example sample script

Download all files: securemedia.tar.gz securemedia.zip

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Class: Secure Media

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