# vim: set fileencoding=utf-8 :

# ***********************IMPORTANT NMAP LICENSE TERMS************************
# *                                                                         *
# * The Nmap Security Scanner is (C) 1996-2018 Insecure.Com LLC ("The Nmap  *
# * Project"). Nmap is also a registered trademark of the Nmap Project.     *
# * This program is free software; you may redistribute and/or modify it    *
# * under the terms of the GNU General Public License as published by the   *
# * Free Software Foundation; Version 2 ("GPL"), BUT ONLY WITH ALL OF THE   *
# * CLARIFICATIONS AND EXCEPTIONS DESCRIBED HEREIN.  This guarantees your   *
# * right to use, modify, and redistribute this software under certain      *
# * conditions.  If you wish to embed Nmap technology into proprietary      *
# * software, we sell alternative licenses (contact sales@nmap.com).        *
# * Dozens of software vendors already license Nmap technology such as      *
# * host discovery, port scanning, OS detection, version detection, and     *
# * the Nmap Scripting Engine.                                              *
# *                                                                         *
# * Note that the GPL places important restrictions on "derivative works",  *
# * yet it does not provide a detailed definition of that term.  To avoid   *
# * misunderstandings, we interpret that term as broadly as copyright law   *
# * allows.  For example, we consider an application to constitute a        *
# * derivative work for the purpose of this license if it does any of the   *
# * following with any software or content covered by this license          *
# * ("Covered Software"):                                                   *
# *                                                                         *
# * o Integrates source code from Covered Software.                         *
# *                                                                         *
# * o Reads or includes copyrighted data files, such as Nmap's nmap-os-db   *
# * or nmap-service-probes.                                                 *
# *                                                                         *
# * o Is designed specifically to execute Covered Software and parse the    *
# * results (as opposed to typical shell or execution-menu apps, which will *
# * execute anything you tell them to).                                     *
# *                                                                         *
# * o Includes Covered Software in a proprietary executable installer.  The *
# * installers produced by InstallShield are an example of this.  Including *
# * Nmap with other software in compressed or archival form does not        *
# * trigger this provision, provided appropriate open source decompression  *
# * or de-archiving software is widely available for no charge.  For the    *
# * purposes of this license, an installer is considered to include Covered *
# * Software even if it actually retrieves a copy of Covered Software from  *
# * another source during runtime (such as by downloading it from the       *
# * Internet).                                                              *
# *                                                                         *
# * o Links (statically or dynamically) to a library which does any of the  *
# * above.                                                                  *
# *                                                                         *
# * o Executes a helper program, module, or script to do any of the above.  *
# *                                                                         *
# * This list is not exclusive, but is meant to clarify our interpretation  *
# * of derived works with some common examples.  Other people may interpret *
# * the plain GPL differently, so we consider this a special exception to   *
# * the GPL that we apply to Covered Software.  Works which meet any of     *
# * these conditions must conform to all of the terms of this license,      *
# * particularly including the GPL Section 3 requirements of providing      *
# * source code and allowing free redistribution of the work as a whole.    *
# *                                                                         *
# * As another special exception to the GPL terms, the Nmap Project grants  *
# * permission to link the code of this program with any version of the     *
# * OpenSSL library which is distributed under a license identical to that  *
# * listed in the included docs/licenses/OpenSSL.txt file, and distribute   *
# * linked combinations including the two.                                  *
# *                                                                         *
# * The Nmap Project has permission to redistribute Npcap, a packet         *
# * capturing driver and library for the Microsoft Windows platform.        *
# * Npcap is a separate work with it's own license rather than this Nmap    *
# * license.  Since the Npcap license does not permit redistribution        *
# * without special permission, our Nmap Windows binary packages which      *
# * contain Npcap may not be redistributed without special permission.      *
# *                                                                         *
# * Any redistribution of Covered Software, including any derived works,    *
# * must obey and carry forward all of the terms of this license, including *
# * obeying all GPL rules and restrictions.  For example, source code of    *
# * the whole work must be provided and free redistribution must be         *
# * allowed.  All GPL references to "this License", are to be treated as    *
# * including the terms and conditions of this license text as well.        *
# *                                                                         *
# * Because this license imposes special exceptions to the GPL, Covered     *
# * Work may not be combined (even as part of a larger work) with plain GPL *
# * software.  The terms, conditions, and exceptions of this license must   *
# * be included as well.  This license is incompatible with some other open *
# * source licenses as well.  In some cases we can relicense portions of    *
# * Nmap or grant special permissions to use it in other open source        *
# * software.  Please contact fyodor@nmap.org with any such requests.       *
# * Similarly, we don't incorporate incompatible open source software into  *
# * Covered Software without special permission from the copyright holders. *
# *                                                                         *
# * If you have any questions about the licensing restrictions on using     *
# * Nmap in other works, we are happy to help.  As mentioned above, we also *
# * offer an alternative license to integrate Nmap into proprietary         *
# * applications and appliances.  These contracts have been sold to dozens  *
# * of software vendors, and generally include a perpetual license as well  *
# * as providing support and updates.  They also fund the continued         *
# * development of Nmap.  Please email sales@nmap.com for further           *
# * information.                                                            *
# *                                                                         *
# * If you have received a written license agreement or contract for        *
# * Covered Software stating terms other than these, you may choose to use  *
# * and redistribute Covered Software under those terms instead of these.   *
# *                                                                         *
# * Source is provided to this software because we believe users have a     *
# * right to know exactly what a program is going to do before they run it. *
# * This also allows you to audit the software for security holes.          *
# *                                                                         *
# * Source code also allows you to port Nmap to new platforms, fix bugs,    *
# * and add new features.  You are highly encouraged to send your changes   *
# * to the dev@nmap.org mailing list for possible incorporation into the    *
# * main distribution.  By sending these changes to Fyodor or one of the    *
# * Insecure.Org development mailing lists, or checking them into the Nmap  *
# * source code repository, it is understood (unless you specify            *
# * otherwise) that you are offering the Nmap Project the unlimited,        *
# * non-exclusive right to reuse, modify, and relicense the code.  Nmap     *
# * will always be available Open Source, but this is important because     *
# * the inability to relicense code has caused devastating problems for     *
# * other Free Software projects (such as KDE and NASM).  We also           *
# * occasionally relicense the code to third parties as discussed above.    *
# * If you wish to specify special license conditions of your               *
# * contributions, just say so when you send them.                          *
# *                                                                         *
# * This program is distributed in the hope that it will be useful, but     *
# * WITHOUT ANY WARRANTY; without even the implied warranty of              *
# * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the Nmap      *
# * license file for more details (it's in a COPYING file included with     *
# * Nmap, and also available from https://svn.nmap.org/nmap/COPYING)        *
# *                                                                         *
# ***************************************************************************/

import re
import gtk
import gobject

from radialnet.bestwidgets.windows import *

from radialnet.gui.NodeNotebook import NodeNotebook
from radialnet.util.misc import ipv4_compare


HOSTS_COLORS = ['#d5ffd5', '#ffffd5', '#ffd5d5']

HOSTS_HEADER = ['ID', '#', 'Hosts']

DIMENSION = (700, 400)

IP_RE = re.compile('^[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}$')


class HostsViewer(BWMainWindow):
    """
    """
    def __init__(self, nodes):
        """
        """
        BWMainWindow.__init__(self)
        self.set_title(_('Hosts Viewer'))
        self.set_default_size(DIMENSION[0], DIMENSION[1])

        self.__nodes = nodes
        self.__default_view = gtk.Label(_("No node selected"))
        self.__view = self.__default_view

        self.__create_widgets()

    def __create_widgets(self):
        """
        """
        self.__panel = gtk.HPaned()
        self.__panel.set_border_width(6)

        self.__list = HostsList(self, self.__nodes)

        self.__panel.add1(self.__list)
        self.__panel.add2(self.__view)
        self.__panel.set_position(int(DIMENSION[0] / 5))

        self.add(self.__panel)

    def change_notebook(self, node):
        """
        """
        if self.__view is not None:
            self.__view.destroy()

        if node is not None:
            self.__view = NodeNotebook(node)
        else:
            self.__view = self.__default_view
        self.__view.show_all()

        self.__panel.add2(self.__view)


class HostsList(gtk.ScrolledWindow):
    """
    """
    def __init__(self, parent, nodes):
        """
        """
        super(HostsList, self).__init__()
        self.set_policy(gtk.POLICY_AUTOMATIC, gtk.POLICY_AUTOMATIC)
        self.set_shadow_type(gtk.SHADOW_NONE)

        self.__parent = parent
        self.__nodes = nodes

        self.__create_widgets()

    def __create_widgets(self):
        """
        """
        self.__cell = gtk.CellRendererText()

        self.__hosts_store = gtk.ListStore(gobject.TYPE_INT,
                                           gobject.TYPE_INT,
                                           gobject.TYPE_STRING,
                                           gobject.TYPE_STRING,
                                           gobject.TYPE_BOOLEAN)

        self.__hosts_treeview = gtk.TreeView(self.__hosts_store)
        self.__hosts_treeview.connect('cursor-changed', self.__cursor_callback)

        for i in range(len(self.__nodes)):

            node = self.__nodes[i]

            ports = node.get_info('number_of_open_ports')
            color = HOSTS_COLORS[node.get_info('vulnerability_score')]

            host = node.get_info('hostname') or node.get_info('ip') or ""

            self.__hosts_store.append([i,
                                       ports,
                                       host,
                                       color,
                                       True])

        self.__hosts_column = list()

        for i in range(0, len(HOSTS_HEADER)):

            column = gtk.TreeViewColumn(HOSTS_HEADER[i],
                                        self.__cell,
                                        text=i)

            self.__hosts_column.append(column)

            self.__hosts_column[i].set_reorderable(True)
            self.__hosts_column[i].set_resizable(True)
            self.__hosts_column[i].set_attributes(self.__cell,
                                                  text=i,
                                                  background=3,
                                                  editable=4)

        self.__hosts_treeview.append_column(self.__hosts_column[2])

        self.__hosts_store.set_sort_func(2, self.__host_sort)

        self.__hosts_column[2].set_sort_column_id(2)

        self.add_with_viewport(self.__hosts_treeview)

        if len(self.__hosts_treeview.get_model()) > 0:
            self.__hosts_treeview.set_cursor((0,))
        self.__cursor_callback(self.__hosts_treeview)

    def __cursor_callback(self, widget):
        """
        """
        path = widget.get_cursor()[0]
        if path is None:
            return

        iter = self.__hosts_store.get_iter(path)

        node = self.__nodes[self.__hosts_store.get_value(iter, 0)]

        self.__parent.change_notebook(node)

    def __host_sort(self, treemodel, iter1, iter2):
        """
        """
        value1 = treemodel.get_value(iter1, 2)
        value2 = treemodel.get_value(iter2, 2)

        value1_is_ip = IP_RE.match(value1)
        value2_is_ip = IP_RE.match(value2)

        if value1_is_ip and value2_is_ip:
            return ipv4_compare(value1, value2)

        if value1_is_ip:
            return -1

        if value2_is_ip:
            return 1

        if value1 < value2:
            return -1

        if value1 > value2:
            return 1

        return 0
