isIPInRange(sIP, sIPREList)
Last updated April 14, 2005
Version: 1 | Requires: ColdFusion MX | Library: NetLib
Description:
Returns true if the passed IP address matchs any of the IP addresses or IP address ranges supplied in a Regex list. This code be to useful in blocking or granting people access based on location. I used it to block people running check/cheque scams from certain areas of the website. Must use comma delimited list.
Return Values:
Returns a boolean.
Example:
<cfif isIPInRange(CGI.REMOTE_ADDR,blockedIPrange)>
This website is not available in your location.
<cfabort>
</cfif>
Parameters:
| Name | Description | Required |
|---|---|---|
| sIP | The IP. | Yes |
| sIPREList | List of IP Regex strings. | Yes |
Full UDF Source:
<cfscript>
/**
* Is this IP within any of the IP ranges supplied.
*
* @param sIP The IP. (Required)
* @param sIPREList List of IP Regex strings. (Required)
* @return Returns a boolean.
* @author Peter Crowley (pcrowley@webzone.ie)
* @version 1, April 14, 2005
*/
function isIPInRange(sIP,sIPREList) {
var i = 1;
var nREListCount=ListLen(sIPREList);
for (i = 1; i LTE nREListCount; i = i+1) {
if (REFind(ListGetAt(sIPREList,i),sIP)) return true;
}
return false;
}
</cfscript>
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