Module jumpscale.tools.dnstool

Helper to get nameservers information and resolving domains.

"""
Helper to get nameservers information and resolving domains.

"""

import dns
import dns.message
import dns.rdataclass
import dns.rdatatype
import dns.query
import dns.resolver


class DNSClient:
    def __init__(self, nameservers=None, port=53):
        self.nameservers = nameservers or ["8.8.8.8", "8.8.4.4"]
        if "localhost" in self.nameservers:
            nameservers.pop(nameservers.index("localhost"))
            nameservers.append("127.0.0.1")
        self.resolver = dns.resolver.Resolver(configure=False)
        self.resolver.nameservers = self.nameservers
        self.resolver.port = port

    def get_nameservers(self, domain="threefoldtoken.org"):
        answer = self.resolver.query(domain, "NS")

        res = []
        for rr in answer:
            res.append(rr.target.to_text())
        return res

    def get_namerecords(self, url="www.threefoldtoken.org"):
        """
        return ip addr for a full name
        """
        answer = self.resolver.query(url, "A")

        res = []
        for rr in answer:
            res.append(rr.address)
        return res

    def is_free(self, domain, domain_type="A"):
        try:
            self.query(domain, domain_type)
        except:
            return True
        return False

    def query(self, *args, **kwargs):
        return self.resolver.query(*args, **kwargs)


def export_module_as():
    return DNSClient()

Functions

def export_module_as()

Expand source code

def export_module_as():
    return DNSClient()

Classes

class DNSClient (nameservers=None, port=53)

Expand source code

class DNSClient:
    def __init__(self, nameservers=None, port=53):
        self.nameservers = nameservers or ["8.8.8.8", "8.8.4.4"]
        if "localhost" in self.nameservers:
            nameservers.pop(nameservers.index("localhost"))
            nameservers.append("127.0.0.1")
        self.resolver = dns.resolver.Resolver(configure=False)
        self.resolver.nameservers = self.nameservers
        self.resolver.port = port

    def get_nameservers(self, domain="threefoldtoken.org"):
        answer = self.resolver.query(domain, "NS")

        res = []
        for rr in answer:
            res.append(rr.target.to_text())
        return res

    def get_namerecords(self, url="www.threefoldtoken.org"):
        """
        return ip addr for a full name
        """
        answer = self.resolver.query(url, "A")

        res = []
        for rr in answer:
            res.append(rr.address)
        return res

    def is_free(self, domain, domain_type="A"):
        try:
            self.query(domain, domain_type)
        except:
            return True
        return False

    def query(self, *args, **kwargs):
        return self.resolver.query(*args, **kwargs)

Methods

def get_namerecords(self, url='www.threefoldtoken.org')

return ip addr for a full name

Expand source code

def get_namerecords(self, url="www.threefoldtoken.org"):
    """
    return ip addr for a full name
    """
    answer = self.resolver.query(url, "A")

    res = []
    for rr in answer:
        res.append(rr.address)
    return res

def get_nameservers(self, domain='threefoldtoken.org')

Expand source code

def get_nameservers(self, domain="threefoldtoken.org"):
    answer = self.resolver.query(domain, "NS")

    res = []
    for rr in answer:
        res.append(rr.target.to_text())
    return res

def is_free(self, domain, domain_type='A')

Expand source code

def is_free(self, domain, domain_type="A"):
    try:
        self.query(domain, domain_type)
    except:
        return True
    return False

def query(self, *args, **kwargs)

Expand source code

def query(self, *args, **kwargs):
    return self.resolver.query(*args, **kwargs)