CIDRBlockList

CIDRBlockList is a ColdFusion library to filter IPs based on CIDR block data.

• Read+parse a flat text file with CIDR IP address data
• Identify whether IP is within CIDR ranges (true/false)
• Write your own rules

Version

1.1

CIDR Data

Create your own CIDR file. IP ranges can be identified by going to:

• http://www.find-ip-address.org/ip-country/
• http://www.wizcrafts.net/exploited-servers-blocklist.html
• http://www.wizcrafts.net/lacnic-blocklist.html
• http://software77.net/geo-ip/

Initialization

Initialize the library and read/parse the CIDR data file. (Currently named "CIDRBlocklist.txt in the same sub-directory as library.)

<CFIF NOT StructKeyExists(application, "CIDRBlockList") OR StructKeyExists(URL, "refreshCIDR")>
    <CFSET application.CIDRBlockList = createObject("component", "CIDRBlockList").init()>
    <!--- Or pass specific CIDR data file 
    <CFSET application.CIDRBlockList = createObject("component", "CIDRBlockList").init("#ThisProjectDir#CIDRBlocklist.txt")>
    --->
</CFIF>

Sample Use

<cfif application.CIDRBlockList.CheckIP(CGI.Remote_Addr)>
    <!--- IP is found within CIDR ranges. Switch to a simple message --->
    <p>To make a donation, please contact us offline at 555-555-5555.</p>
<cfelse>
    <!--- Non-Blocked IP.  Show form or information --->
    <cfinclude template="./donationform.cfm">
</cfif>

View Stats

<CFDUMP VAR="#Application.CIDRBlockList.GetStats()#">