Need to check srv pregmatch

Question

I am trying to validate srv record with jquery preg_match

What i need: 'PriorNumber WeightNumber PortNumber Address/server'. This needs to be limited to max 5 parts in total.

For now i got a part working but only the last part is not working when i use a domain or ip address.

/^((\d+ \d+ \d+\w+.(?:\s+\w+)\1{0,1}$))/

Works = 100 1 4234 sipdsdfghj

Not working: 100 1 4234 sipdsdfghj.sadas

https://www.regextester.com/?fam=103214

Please help me on this

Full code validate

value = 100 1 4234 sipdsdfghj.asd

// Functie voor het valideren van srv record 'prioriteit gewicht poort doeladres'
jQuery.validator.addMethod("srvRecord", function(value, element) {
    if (value.indexOf(' ') >= 0) {

        console.log(value);

        if(value.match( /^(?<prior>\d+)\h+(?<weight>\d+)\h+(?<port>\d+)\h+(?:(?<ip>\d{1,3}(?:\.\d{1,3}){3})|(?<domain>\S+\.\S+))$/gm) !== null){
            return true;
        }

        return false
    } 
}, "* Amount must be greater than zero");

Maybe [`^(\d+)\h+(\d+)\h+(\d+)\h+(\S+)$`](https://regex101.com/r/o1HUBn/1) will suffice? — Wiktor Stribiżew, Apr 22 '18 at 19:46
What last part? Note you provided no pattern requirements, it is not clear what you are trying to do. — Wiktor Stribiżew, Apr 22 '18 at 19:56
its like this, last part of the string that got check is an ip / domain and my expression is not seeing the . in the domain or ip as 1 input part. Need to validate this input "100 1 4234 sipdsdfghj.sadas" or "100 1 4234 8.8.8.8" — Mitch Daniels, Apr 22 '18 at 19:59
Seems to work on that page, but when using jquery is not. if(value.match( /^(?\d+)\h+(?\d+)\h+(?\d+)\h+(?:(?\d{1,3}(?:\.\d{1,3}){3})|(?\S+\.\S+))$/gm) !== null){ return true; } — Mitch Daniels, Apr 22 '18 at 20:14
Then why at all use `java` and `preg_match` (PHP) tags? Show the whole code, provide a sample string(s) and state expected output. And only keep tags that are relevant. — Wiktor Stribiżew, Apr 22 '18 at 20:16
It is still not helpful since the code cannot be run as is. The only hint I can give now is that you need to replace `\h` with `\s` and remove capturing groups as you are not extracting anything, just "validating": `/^\d+\s+\d+\s+\d+\s+(?:\d{1,3}(?:\.\d{1,3}){3}|\S+\.\S+)$/`. Note you do not need `g` nor `m`. — Wiktor Stribiżew, Apr 22 '18 at 20:21
How can i do this for "number ip/domain" Using: /^\d+ +.+/ but can add more after the second part so its not correct. — Mitch Daniels, Apr 22 '18 at 20:29
Do you mean `/^\d+\s+(?:\d{1,3}(?:\.\d{1,3}){3}|\S+\.\S+)$/`? — Wiktor Stribiżew, Apr 22 '18 at 20:30
can you do one more for this validation: "number ip/domain" ? — Mitch Daniels, Apr 22 '18 at 20:39
Can you help me on 1 more, need to check if input is between quote: "asdasasddsfsdfsdfsdfd" — Mitch Daniels, Apr 23 '18 at 10:44
I doubt that is related to the current issue. Moreover, what do you mean? `"[^"]+"` will match that string. — Wiktor Stribiżew, Apr 23 '18 at 10:55
True, but still same category. That one works in browser but when i use it in the code i can put anyting behind the second " and its still validated. — Mitch Daniels, Apr 23 '18 at 11:05
If you need to match a *whole string*, add *anchors*. Read my answer, it can help you understand more about regex. Probably you need `/^"[^"]+"$/`. You can learn to write these patterns if you do the lessons at http://regexone.com. It is very short and helpful to learn the basics like you are asking for. — Wiktor Stribiżew, Apr 23 '18 at 11:09

score 1 · Accepted Answer · answered Apr 22 '18 at 20:32

You may try this regex solution:

/^\d+(?:\s+\d+){2}\s+(?:\d{1,3}(?:\.\d{1,3}){3}|\S+\.\S+)$/

Note it does not really validate an IP or domain name, it only matches IP-like and domain-like substrings. See Regular expression to match DNS hostname or IP Address for details on a more precise IP regex.

Details

^ - start of string
\d+ - 1+ digits
(?:\s+\d+){2} - 2 sequences of 1+ whitespaces and 1+ digits
\s+ - 1+ whitespaces
(?:\d{1,3}(?:\.\d{1,3}){3}|\S+\.\S+) - either of:
- \d{1,3}(?:\.\d{1,3}){3} - 1 to 3 digits, and then 3 sequences of . and 1 to 3 digits
- \S+\.\S+ - 1+ non-whitespace chars, . and again 1+ non-whitespace chars
$ - end of string.

Need to check srv pregmatch

1 Answers1