[FX.php List] Capturing IP for a choice calc

[Kevin Futter]

Hi Peter,

Firstly, just a quick word about using the $_SERVER['REMOTE_ADDR'] - don¹t!
Why? I notice you¹re using an OS X Tiger server (as do we for our testing
box). 10.4 Server does NOT capture the remote address in this variable.
Instead it uses $_SERVER['HTTP_PC_REMOTE_ADDR']. I learned this the hard way
after much head scratching! To make my code portable, I use this:

if (isset($_SERVER['HTTP_PC_REMOTE_ADDR'])) {
    // OS X Server uses HTTP_PC_REMOTE_ADDR to store user IP
    $_SERVER['REMOTE_ADDR'] = $_SERVER['HTTP_PC_REMOTE_ADDR'];
}
$ip = $_SERVER['REMOTE_ADDR'];

Now, the easiest way to filter IP addresses for internal/external access is
to use your gateway¹s IP address. For instance, if it¹s internal NIC happens
to be 192.168.0.1, then simply filter on that. All external requests to your
internal webserver (assuming your webserver *is* internal) will be seen as
coming from this address, so just disallow these requests in your code. If
it¹s any other address, it will be by definition internal, and OK. It¹s how
we do it for several of our resources, and it works beautifully.

Kevin

On 2/3/06 2:11 AM, "Peter Bates" <p.bates at sjcpl.org> wrote:

> I'm building a solution that contains some copyrighted material on our
> website. We have permission to share the copyrighted material with our patrons
> while they are in one of our building, but not if they are accessing the site
> from outside the building. I'm assuming that I need to capture the requesting
> IP address before the data is displayed that basically does the following:
> 
> If IP = Our in-house IP range         <!-- We have our own in-house network,
> inside and outside DNS servers, web server, etc. -->
>    Show data from field "x"             <!-- This would be actually a link
> that is stored in a FMP field. -->
> Else
>    Show "We're sorry, but due to copyright restrictions, this material is only
> available in one of our library branches"   <!-- This would be displayed in
> place of the data from  field "x" -->
> End If
> 
> As I am still floundering around using FileMaker Pro with FX.php, I would
> deeply appreciate any help that could point me into the right direction to
> code this.
> 
> Mac OS X Server 10.4x, FileMaker Server Advanced 8x, PHP 4.x
> 
> Thanks,
> Peter
> 
> Peter Bates
> Microcomputer Network Specialist
> Automated Services
> St. Joseph County Public Library
> 304 S. Main St.
> South Bend, IN  46601
> voice: (574) 282-4610
> fax: (574) 282-4662
> e-mail: p.bates at sjcpl.org <mailto:p.bates at sjcpl.org>
> www:  http:/www.libraryforlife.org <http:/www.libraryforlife.org>
> library catalog:
> http://www.libraryforlife.org/onlinecatalog/onlinecatalog.html
> <http://www.libraryforlife.org/onlinecatalog/onlinecatalog.html>
> 
>  
> 
> 
> 
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-- 
Kevin Futter
Webmaster, St. Bernard's College
http://www.sbc.melb.catholic.edu.au/

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