# whois
![test](https://github.com/TwiN/whois/workflows/test/badge.svg?branch=master)

Lightweight library for retrieving WHOIS information on a domain.

It automatically retrieves the appropriate WHOIS server based on the domain's TLD by first querying IANA.


## Usage
### As an executable
To install it:
```console
go install github.com/TwiN/whois/cmd/whois@latest
```
To run it:
```console 
whois example.com
```

### As a library
```console
go get github.com/TwiN/whois
```

#### Query
If all you want is the text a WHOIS server would return you, you can use the `Query` method of the `whois.Client` type:
```go
package main

import "github.com/TwiN/whois"

func main() {
    client := whois.NewClient()
    output, err := client.Query("example.com")
    if err != nil {
    	panic(err)
    }
    println(output)
}
```

#### QueryAndParse
If you want specific pieces of information, you can use the `QueryAndParse` method of the `whois.Client` type:
```go
package main

import "github.com/TwiN/whois"

func main() {
    client := whois.NewClient()
    response, err := client.QueryAndParse("example.com")
    if err != nil {
    	panic(err)
    }
    println(response.ExpirationDate.String()) 
}
```
Note that because there is no standardized format for WHOIS responses, this parsing may not be successful for every single TLD.

Currently, the only fields parsed are:
- `ExpirationDate`: The time.Time at which the domain will expire
- `DomainStatuses`: The statuses that the domain currently has (e.g. `clientTransferProhibited`)
- `NameServers`: The nameservers currently tied to the domain

If you'd like one or more other fields to be parsed, please don't be shy and create an issue or a pull request.