Regular Expressions for IP address

[Nandini DM]

Hi,

Regular expression to check below points 

1)Field validation to check IP address should not be more than 3 digits if user trying to enter IP range max 255 it should throw an error. ex(255.255.255.255)

2)field should also check, if user try to enter IP address along with slash number which should not exceed more than 32. ex( 10.111.11.111/11) (after slash, number should not be more than 32)

Kindly help!

Thanks.

[Nandini DM]

@Rupanjani - Along with the two condition , it should also check for URL like "www.google.com" ,Sample : "255.255.255.255 | 255.222.222.222/12 | www.google.com"

[Rupanjani]

@Nandini DM ,

Check the below link:

https://www.servicenow.com/community/itsm-forum/how-to-provide-validation-for-input-url-field-either...

Try to replace the script with the below and test:

function onChange(control, oldValue, newValue, isLoading) {
    if (isLoading || newValue === '') {
        return;
    }

	var ipRegex = new RegExp('^(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)\\.(25[0-5]|2[0-4][0-9]|[01]?[0-9][0-9]?)$');
	var regex = new RegExp('^(?:[0-9]|[1-2][0-9]|3[0-2])$');
        var validateURL = /https?:\/\/(www\.)?[-a-zA-Z0-9@:%._\+~#=]{2,256}\.[a-z]{2,6}\b([-a-zA-Z0-9@:%_\+.~#?&//=]*)/.test(newValue);

     
        var isValidIp = '';
	var isSubnet = '';
	isValidIp = ipRegex.test(newValue);

	var splitip = '';
        var ipCheck = '';
        var subnetCheck = '';

	if (newValue.indexOf('/') != -1) {
        splitip = newValue.split('/');
        ipCheck = splitip[0];
        subnetCheck = splitip[1];
		isValidIp = ipRegex.test(ipCheck);
		isSubnet =  regex.test(subnetCheck);
    }	

    if (!isValidIp) {
        g_form.showFieldMsg('ip_address', 'Invalid IP', 'error');
    } else if(!isSubnet && subnetCheck != ''){
		g_form.showFieldMsg('ip_address', 'Invalid Subnet', 'error');
	} else if (!validateURL) {
		g_form.showFieldMsg('ip_address', 'Enter Valid Ip or Valid URL', 'error');
	}
}

[Nandini DM]

Hi @Rupanjani 

That URL part is showing below message on everything I enter , I tried giving (222.222.222.222)-->Invalid , (222.222.222.222/12)--->enter valid ip or valid URL and (www.aa.com)-->enter valid ip or valid URL

Enter Valid Ip or Valid URL

[Nandini DM]

@Rupanjani 
Validate URL is not working as expected and how to make IP address comma separated .

[Rupanjani]

@Nandini DM 

Make the variable type 'Single Line Text' or 'Multi Line Text', depending on how many IP addresses will be mentioned in comma separated.

In order to make validations on the comma separated we need to modify the above code, by adding code for splitting the text with comma first and then applying while loop to check every IP address is a valid one or not.