Can We read client side files using javascript

[parveen]

Can We read client side files using javascript? not only text files

[Thomas 'PointedEars' Lahn]

Re: Can We read client side files using javascript

parveen wrote:

Can We read client side files using javascript? not only text files

Yes, with XHR, but only from a file: URI to a file: URI, or with a
privileged script. In MSIE 7+ you are required to use the ActiveXObject
object instead of XMLHttpRequest for that.


PointedEars
--
realism: HTML 4.01 Strict
evangelism: XHTML 1.0 Strict
madness: XHTML 1.1 as application/xhtml+xml
-- Bjoern Hoehrmann

[Joost Diepenmaat]

Re: Can We read client side files using javascript

parveen <k.parveen@gmai l.comwrites:

Can We read client side files using javascript? not only text files

Yes. No. Some. Depending on what you mean.

--
Joost Diepenmaat | blog: http://joost.zeekat.nl/ | work: http://zeekat.nl/

[Thomas 'PointedEars' Lahn]

Re: Can We read client side files using javascript

Thomas 'PointedEars' Lahn wrote:

parveen wrote:

>Can We read client side files using javascript? not only text files

>
Yes, with XHR, but only from a file: URI to a file: URI, or with a
privileged script. In MSIE 7+ you are required to use the ActiveXObject
object instead of XMLHttpRequest for that.

Just in case anyone is interested, the following works from a `http:' URI in
Fx 2.0.0.13 if the supporting feature is enabled[1]:

try
{
netscape.securi ty.PrivilegeMan ager.enablePriv ilege("Universa lBrowserRead");
netscape.securi ty.PrivilegeMan ager.enablePriv ilege("Universa lFileRead");
var x = new XMLHttpRequest( );
x.open("GET", "file:///C:/AUTOEXEC.BAT", true);
x.onreadystatec hange = function() {
if (x.readyState == 4) window.alert(x. responseText);
};
x.send(null);
}
catch (e)
{
e
}

It is important that both privileges are requested and granted. Firebug
then still displays

| Security Error: Content at http://... may not load or link to
| file:///C:/AUTOEXEC.BAT.

but the content of the file is displayed anyway. Code running out of the
sandbox does not have to request the privileges though, so be careful with
what extensions you install :)


PointedEars
___________
[1]

http://developer.mozilla.org/en/docs/Bypassing_Security_Restrictions_and_Signing_Code

--
var bugRiddenCrashP ronePieceOfJunk = (
navigator.userA gent.indexOf('M SIE 5') != -1
&& navigator.userA gent.indexOf('M ac') != -1
) // Plone, register_functi on.js:16

[Thomas 'PointedEars' Lahn]

Re: Can We read client side files using javascript

The Magpie wrote:

Thomas 'PointedEars' Lahn wrote:

>parveen wrote:

>>Can We read client side files using javascript? not only text files

>Yes, with XHR, but only from a file: URI to a file: URI, or with a
>privileged script. In MSIE 7+ you are required to use the ActiveXObject
>object instead of XMLHttpRequest for that.
>>

You can with XMLHttpRequest, Pointed. It doesn't really care what type
the files are as long as they are text-content (not binary).

It would appear you are replying to something I have not written.


PointedEars