flask-soc-site/host_lookup.py

# TODO: make this module only have wrapper functions, no direct lookups or imports. Move all the direct lookup functions (emailsec) into (a) separate module(s).

import re
from ipaddress import ip_address
from checkdmarc.dmarc import check_dmarc
from checkdmarc.spf import check_spf
import validators
from ipwhois import IPWhois
from whois import whois

# from constants import DOMAIN, EMAIL, IPV4, IPV6, URL
import abuseipdb_api
import virustotal_api
import socket
from urllib.parse import urlparse
import host_data
import tldextract


class Lookedup(object):
    def __init__(self, host):
        self.host = host
        self.host_type = determine(self.host)
        self = self.specific()

    def url_lookup(self):
        self.domain = urlparse(self.host).netloc
        self.ip_address = socket.gethostbyname(self.domain)
        self.email_security = spf_dmarc(self.domain)
        return self

    def ip_lookup(self):
        pass

    def domain_lookup(self):
        self.ip_address = socket.gethostbyname(self.host)
        self.metadata = domain(self.host)
        self.domain = self.metadata["domain_name"]
        self.email_security = spf_dmarc(self.domain)
        self.vt, self.vt_dict = virustotal_api.analyse(self.host, self.host_type)
        self.abuseipdb = abuseipdb_api.analyse(self.ip_address)
        return self

    def email_lookup(self):
        pass

    def no_host(self):
        return None

    def specific(self):
        if self.host_type == "url":
            return self.url_lookup()
        elif self.host_type == "domain":
            return self.domain_lookup()


def sanitize(user_input):
    sanitized = []
    if user_input.strip() != "":
        sanitized = re.split("; |, | |\n", user_input)
    return sanitized


def determine(host):
    host_type = ""
    if validators.url(host):
        host_type = "url"
    elif validators.domain(host):
        host_type = "domain"
    elif validators.ip_address.ipv4(host):
        host_type = "ip"
    elif validators.ip_address.ipv6(host):
        host_type = "ip"
    elif validators.email(host):
        host_type = "email address"
    else:
        host_type = "no host"
    return host_type


# def extract(user_input):
#     hosts = []
#     errors = []
#     for item in user_input:
#         if validators.url(item):
#             hosts.append(item)
#         elif validators.domain(item):
#             hosts.append(item)
#         elif validators.ip_address.ipv4(item):
#             hosts.append(item)
#         elif validators.ip_address.ipv6(item):
#             hosts.append(item)
#         elif validators.email(item):
#             hosts.append(item)
#         else:
#             errors.append(item)
#     return hosts, errors


def domain(host):
    result = dict(whois(host))
    if type(result["creation_date"]) is list:
        result["creation_date"] = result["creation_date"][0].strftime("%d-%m-%Y")
    else:
        result["creation_date"] = result["creation_date"].strftime("%d-%m-%Y")
    if type(result["domain_name"]) is list:
        result["domain_name"] = result["domain_name"][0]
    return result


def spf_dmarc(domain):
    spf = ""
    dmarc = ""
    result_spf = check_spf(domain)
    if result_spf["valid"]:
        spf = result_spf["record"]
    result_dmarc = check_dmarc(domain)
    if result_dmarc["valid"]:
        dmarc = result_dmarc["record"]
    return spf, dmarc


def process_input(user):
    results = []
    sanitized = sanitize(user)
    hosts, errors = extract(sanitized)
    # for host in hosts:
    #     host_analyzed = Host(host).lookup()
    #     results.append(host_analyzed)
    # return results
    return hosts, errors


def process_file(file_content):
    hosts = []
    for host in file_content:
        result = Host(host)
        hosts.append(result)
    return hosts