# vim: set fileencoding=utf-8 :

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from radialnet.core.Graph import *
from radialnet.gui.RadialNet import NetNode
import zenmapCore.NmapParser

import math
import re


COLORS = [(0.0, 1.0, 0.0),
          (1.0, 1.0, 0.0),
          (1.0, 0.0, 0.0)]

BASE_RADIUS = 5.5
NONE_RADIUS = 4.5



def set_node_info(node, host):
    """
    """
    node.set_host(host)

    radius = BASE_RADIUS + 2 * math.log(node.get_info("number_of_open_ports") + 1)

    node.set_draw_info({"color":COLORS[node.get_info("vulnerability_score")],
                        "radius":radius})

class TracerouteHostInfo(object):
    """This is a minimal implementation of HostInfo, sufficient to
    represent the information in an intermediate traceroute hop."""
    def __init__(self):
        self.ip = None
        self.ipv6 = None
        self.mac = None
        self.hostname = None
        self.ports = []
        self.extraports = []
        self.osmatches = []

    def get_hostname(self):
        return self.hostname

    def get_best_osmatch(self):
        if not self.osmatches:
            return None
        def osmatch_key(osmatch):
            try:
                return -float(osmatch["accuracy"])
            except ValueError:
                return 0
        return sorted(self.osmatches, key = osmatch_key)[0]

    hostnames = property(lambda self: self.hostname and [self.hostname] or [])

def make_graph_from_hosts(hosts):
    #hosts = parser.get_root().search_children('host', deep=True)
    graph = Graph()
    nodes = list()
    node_cache = {}

    # Setting initial reference host
    main_node = NetNode()
    nodes.append(main_node)

    localhost = TracerouteHostInfo()
    localhost.ip = {"addr": "127.0.0.1/8", "type": "ipv4"}
    localhost.hostname = "localhost"
    main_node.set_host(localhost)
    main_node.set_draw_info({"valid": True, "color":(0,0,0), "radius":NONE_RADIUS})

    #Save endpoints for attaching scanned hosts to
    endpoints = {}
    # For each host in hosts just mount the graph
    for host in hosts:
        trace = host.trace
        endpoints[host] = nodes[0]
        hops = trace.get("hops")

        # If host has traceroute information mount graph
        if hops is not None and len(hops) > 0:
            prev_node = nodes[0]
            hops = trace.get("hops", [])
            ttls = [int(hop["ttl"]) for hop in hops]

            # Getting nodes of host by ttl
            for ttl in range(1, max(ttls) + 1):
                if ttl in ttls:
                    # Find a hop by ttl
                    hop = None
                    for h in hops:
                        if ttl == int(h["ttl"]):
                            hop = h
                            break

                    node = node_cache.get(hop["ipaddr"])
                    if node is None:
                        node = NetNode()
                        nodes.append(node)

                        hop_host = TracerouteHostInfo()
                        hop_host.ip = {"addr": hop["ipaddr"], "type": "", "vendor": ""}
                        node.set_draw_info({"valid":True})
                        node.set_draw_info({"color":(1,1,1),
                                            "radius":NONE_RADIUS})

                        if hop["host"] != "":
                            hop_host.hostname = hop["host"]

                        node.set_host(hop_host)

                        node_cache[node.get_info("ip")] = node

                    rtt = hop["rtt"]
                    if rtt != "--":
                        graph.set_connection(node, prev_node, float(rtt))
                    else:
                        graph.set_connection(node, prev_node)
                else:
                    node = NetNode()
                    nodes.append(node)

                    node.set_draw_info({"valid":False})
                    node.set_draw_info({"color":(1,1,1), "radius":NONE_RADIUS})

                    graph.set_connection(node, prev_node)

                prev_node = node
                endpoints[host] = node

    # For each fully scanned host
    for host in hosts:
        ip = host.ip
        if ip is None:
            ip = host.ipv6

        node = node_cache.get(ip["addr"])
        if node is None:
            node = NetNode()
            nodes.append(node)

            node.set_draw_info({"no_route":True})

            graph.set_connection(node, endpoints[host])

        node.set_draw_info({"valid":True})
        node.set_draw_info({"scanned":True})
        set_node_info(node, host)
        node_cache[node.get_info("ip")] = node

    graph.set_nodes(nodes)
    graph.set_main_node(main_node)

    return graph