<cfdump
var="#getUnusedIPs('192.29.22.2,192.29.22.6','192.29.22.0','192.29.22.10')#">
<cffunction name="getUnusedIPs" returntype="array">
<cfargument name="ipList" type="string" required="true"/>
<cfargument name="rangeStart" type="string" required="true"/>
<cfargument name="rangeEnd" type="string" required="true"/>
<cfscript>
var startDec = ipToDecimalValue(rangeStart);
var endDec = ipToDecimalValue(rangeEnd);
var ipStruct = StructNew();
var ipSectionSize = 2^8;
var ipVal = "";
var i = 0;
var j = 0;
var unusedIPs = ArrayNew(1);
var ipAddr = "";
var tmpVal = "";
var tmpHex = "";
// Find All used IP Addresses
for( i = 1; i lte #ListLen(ipList)#; i = i + 1 ) {
ipVal = ipToDecimalValue(ListGetAt(ipList,i));
ipStruct[ipVal] = true;
}
for( i = startDec; i lte endDec; i = i + 1 ) {
if( not StructKeyExists(ipStruct,i) ) {
ipAddr = "";
tmpVal = i;
for( j = 3; j gte 0; j = j -1 ) {
tmpHex = int(tmpVal/ipSectionSize^j);
tmpVal = tmpVal -
tmpHex*ipSectionSize^j;
ipAddr = ListAppend(ipAddr, tmpHex,
".");
}
ArrayAppend(unusedIPs,ipAddr);
}
}
return unusedIPs;
</cfscript>
</cffunction>
<cffunction name="ipToDecimalValue" returntype="numeric">
<cfargument name="ipAddr" type="string" required="true"/>
<cfscript>
var ipDecVal = 0;
var ipSectionSize = 2^8;
var tmpIPVal = 0;
var i = 0;
for( i = 1; i lte 4; i = i + 1 ) {
tmpIPVal = ListGetAt(ipAddr,i,".");
ipDecVal = ipDecVal + tmpIPVal*ipSectionSize^(4-i);
}
return ipDecVal;
</cfscript>
</cffunction>
<cffunction name="isWithinRange" returntype="boolean">
<cfargument name="ipAddr" type="string" required="true"/>
<cfargument name="rangeStart" type="string" required="true"/>
<cfargument name="rangeEnd" type="string" required="true"/>
<cfset var ipDec = ipToDecimalValue(ipAddr)/>
<cfreturn ipDec gte ipToDecimalValue(rangeStart) and ipDec lte
ipToDecimalValue(rangeEnd)/>
</cffunction>
On 11/6/07, Todd <[EMAIL PROTECTED]> wrote:
> 192.29.22 <http://192.29.22.0/> is constant. 0 to 225 is not.
>
> Make an array? append 0->225 on the end of 192.29.22 and then do your
> checks/show the list of what's available?
>
> ~Todd
>
> On Nov 5, 2007 9:44 AM, Ben Nadel <[EMAIL PROTECTED]> wrote:
>
> > Robert,
> >
> > I don't know how to do this offhand, but you can convert IP addresses to
> > a single big integer number. What you could do is figure out the start
> > IP and end IP numbers, then do a simple FOR loop. For each loop
> > iteration, you could take that number and convert it back to an IP
> > address and check it. Not 100% how that would work, but maybe this can
> > point you in a good direction.
> >
> > ......................
> > Ben Nadel
> > Certified Advanced ColdFusion MX7 Developer
> > www.bennadel.com
> >
> > Need ColdFusion Help?
> > www.bennadel.com/ask-ben/
> >
> > -----Original Message-----
> > From: Orlini, Robert [mailto:[EMAIL PROTECTED]
> > Sent: Monday, November 05, 2007 9:14 AM
> > To: CF-Talk
> > Subject: list help
> >
> > I would like to create a list of IP addresses, let's say, 192.29.22.0 to
> > 192.29.22.255 and then with the list of IPs I already have of valid
> > users in the same range, search through and find ones that don't match
> > the range.
> >
> > For example, I would like the code to search through 192.29.22.0 to
> > 192.29.22.255 and match IPs I have within this range and then list out
> > IPs that are not there. If I have IP 192.29.22.122 in my list it should
> > find a match within the range and do nothing, but if my list does not
> > have IP 192.29.22.100 then it should flag this IP as available.
> >
> > Is there an easy way to do this without typing in the whole 192.29.22.0
> > to 192.29.22.255 range? Do I use a list function?
> >
> > Thanks.
> >
> > Robert O.
> > HWW
> >
>
>
>
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~|
Download the latest ColdFusion 8 utilities including Report Builder,
plug-ins for Eclipse and Dreamweaver updates.
http;//www.adobe.com/cfusion/entitlement/index.cfm?e=labs%5adobecf8%5Fbeta
Archive:
http://www.houseoffusion.com/groups/CF-Talk/message.cfm/messageid:292657
Subscription: http://www.houseoffusion.com/groups/CF-Talk/subscribe.cfm
Unsubscribe:
http://www.houseoffusion.com/cf_lists/unsubscribe.cfm?user=11502.10531.4
