MACROMEDIA FLASH MEDIA SERVER 2-SERVER MANAGEMENT ACTIONSCRIPT LANGUAGE Manuel d'utilisateur télécharger pdf (Page 6)

ADOBE FLASH MEDIA INTERACTIVE SERVER

Server-Side ActionScript Language Reference

Parameters

filename A string indicating the relative path to a script file from the main.asc file.

Example

The following example loads the myLoadedFile.asc file:

load("myLoadedFile.asc");

protectObject()

protectObject(object)

Protects the methods of an object from application code. Application code cannot access or inspect the methods

directly. You can use this function only in the secure.asc file.

Availability

Flash Media Server 2

Parameters

object An object to protect.

Returns

An Object.

Details

After an object is protected, don’t reference it in global variables or make it a member of an accessible object. The

object returned by

protectObject() dispatches all method invocations to the underlying object but blocks access

to member data. As a result, you can’t enumerate or modify members directly. The protected object keeps an

outstanding reference to the underlying object, which ensures that the object is valid. The protected object follows

normal reference rules and exists while it is referred to.

Flash Media Interactive Server has two script execution modes: secure and normal. In secure mode, only the

secure.asc file (if it exists) is loaded and evaluated—no other application scripts are loaded. The

getGlobal() and

protectObject() functions are available only in secure mode. These functions are very powerful because they

provide complete access to the script execution environment and let you create system objects. Once the secure.asc

file is loaded, the server switches to normal script execution mode until the application is unloaded.

For more information, see Adobe Flash Media Server Developer Guide.

Example

After secure.asc is executed, calls to

load() are directed through the user-defined system call, as shown in the

following example:

var sysobj = {};

sysobj._load = load; // Hide the load function

load = null; // Make it unavailable unpriviliged code.

sysobj.load = function(fname){

// User-defined code to validate/modify fname

return this._load(fname);

}

// Grab the global object.

var global = getGlobal();

// Now protect sysobj and make it available as

// “system” globally. Also, set its attributes

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