re2o/machines/views.py

# -*- mode: python; coding: utf-8 -*-
# Re2o est un logiciel d'administration développé initiallement au rezometz. Il
# se veut agnostique au réseau considéré, de manière à être installable en
# quelques clics.
#
# Copyright © 2016-2018  Gabriel Détraz
# Copyright © 2017  Goulven Kermarec
# Copyright © 2017  Augustin Lemesle
# Copyright © 2017-2018  Maël Kervella
# Copyright © 2018  Charlie Jacomme
#
# This program is free software; you can redistribute it and/or modify
# it under the terms of the GNU General Public License as published by
# the Free Software Foundation; either version 2 of the License, or
# (at your option) any later version.
#
# 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
# GNU General Public License for more details.
#
# You should have received a copy of the GNU General Public License along
# with this program; if not, write to the Free Software Foundation, Inc.,
# 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.

# App de gestion des machines pour re2o
# Gabriel Détraz, Augustin Lemesle
# Gplv2
"""machines.views
The views for the Machines app
"""

from __future__ import unicode_literals

from django.urls import reverse
from django.http import HttpResponse
from django.shortcuts import render, redirect
from django.contrib import messages
from django.contrib.auth.decorators import login_required, permission_required
from django.db.models import ProtectedError, F
from django.forms import modelformset_factory
from django.views.decorators.csrf import csrf_exempt

from rest_framework.renderers import JSONRenderer

from users.models import User
from preferences.models import GeneralOption
from re2o.utils import (
    all_active_assigned_interfaces,
    filter_active_interfaces,
    SortTable,
    re2o_paginator,
)
from re2o.acl import (
    can_create,
    can_edit,
    can_delete,
    can_view_all,
    can_delete_set,
)
from re2o.views import form

from .serializers import (
    FullInterfaceSerializer,
    InterfaceSerializer,
    TypeSerializer,
    DomainSerializer,
    TxtSerializer,
    SrvSerializer,
    MxSerializer,
    ExtensionSerializer,
    ServiceServersSerializer,
    NsSerializer,
)

from .forms import (
    NewMachineForm,
    EditMachineForm,
    EditInterfaceForm,
    AddInterfaceForm,
    MachineTypeForm,
    DelMachineTypeForm,
    ExtensionForm,
    DelExtensionForm,
    EditIpTypeForm,
    IpTypeForm,
    DelIpTypeForm,
    DomainForm,
    AliasForm,
    DelAliasForm,
    SOAForm,
    DelSOAForm,
    NsForm,
    DelNsForm,
    TxtForm,
    DelTxtForm,
    DNameForm,
    DelDNameForm,
    MxForm,
    DelMxForm,
    VlanForm,
    DelVlanForm,
    ServiceForm,
    DelServiceForm,
    NasForm,
    DelNasForm,
    SrvForm,
    DelSrvForm,
    Ipv6ListForm,
    EditOuverturePortListForm,
    EditOuverturePortConfigForm
)
from .models import (
    IpType,
    Machine,
    Interface,
    MachineType,
    Extension,
    SOA,
    Mx,
    Ns,
    Domain,
    Service,
    Service_link,
    Vlan,
    Nas,
    Txt,
    DName,
    Srv,
    OuverturePortList,
    OuverturePort,
    Ipv6List,
)


def f_type_id(is_type_tt):
    """ The id that will be used in HTML to store the value of the field
    type. Depends on the fact that type is generate using typeahead or not
    """
    return 'id_Interface-type_hidden' if is_type_tt else 'id_Interface-type'


def generate_ipv4_choices(form_obj):
    """ Generate the parameter choices for the massive_bootstrap_form tag
    """
    f_ipv4 = form_obj.fields['ipv4']
    used_mtype_id = []
    choices = '{"":[{key:"",value:"Choisissez d\'abord un type de machine"},'
    mtype_id = -1

    for ip in (f_ipv4.queryset
               .annotate(mtype_id=F('ip_type__machinetype__id'))
               .order_by('mtype_id', 'id')):
        if mtype_id != ip.mtype_id:
            mtype_id = ip.mtype_id
            used_mtype_id.append(mtype_id)
            choices += '],"{t}":[{{key:"",value:"{v}"}},'.format(
                t=mtype_id,
                v=f_ipv4.empty_label or '""'
            )
        choices += '{{key:{k},value:"{v}"}},'.format(
            k=ip.id,
            v=ip.ipv4
        )

    for t in form_obj.fields['type'].queryset.exclude(id__in=used_mtype_id):
        choices += '], "'+str(t.id)+'": ['
        choices += '{key: "", value: "' + str(f_ipv4.empty_label) + '"},'
    choices += ']}'
    return choices


def generate_ipv4_engine(is_type_tt):
    """ Generate the parameter engine for the massive_bootstrap_form tag
    """
    return (
        'new Bloodhound( {{'
            'datumTokenizer: Bloodhound.tokenizers.obj.whitespace( "value" ),'
            'queryTokenizer: Bloodhound.tokenizers.whitespace,'
            'local: choices_ipv4[ $( "#{type_id}" ).val() ],'
            'identify: function( obj ) {{ return obj.key; }}'
        '}} )'
        ).format(
            type_id=f_type_id(is_type_tt)
        )


def generate_ipv4_match_func(is_type_tt):
    """ Generate the parameter match_func for the massive_bootstrap_form tag
    """
    return (
        'function(q, sync) {{'
            'if (q === "") {{'
                'var first = choices_ipv4[$("#{type_id}").val()].slice(0, 5);'
                'first = first.map( function (obj) {{ return obj.key; }} );'
                'sync(engine_ipv4.get(first));'
            '}} else {{'
                'engine_ipv4.search(q, sync);'
            '}}'
        '}}'
        ).format(
            type_id=f_type_id(is_type_tt)
        )


def generate_ipv4_mbf_param(form_obj, is_type_tt):
    """ Generate all the parameters to use with the massive_bootstrap_form
    tag """
    i_choices = {'ipv4': generate_ipv4_choices(form_obj)}
    i_engine = {'ipv4': generate_ipv4_engine(is_type_tt)}
    i_match_func = {'ipv4': generate_ipv4_match_func(is_type_tt)}
    i_update_on = {'ipv4': [f_type_id(is_type_tt)]}
    i_gen_select = {'ipv4': False}
    i_mbf_param = {
        'choices': i_choices,
        'engine': i_engine,
        'match_func': i_match_func,
        'update_on': i_update_on,
        'gen_select': i_gen_select
    }
    return i_mbf_param


@login_required
@can_create(Machine)
@can_edit(User)
def new_machine(request, user, **_kwargs):
    """ Fonction de creation d'une machine. Cree l'objet machine,
    le sous objet interface et l'objet domain à partir de model forms.
    Trop complexe, devrait être simplifié"""

    machine = NewMachineForm(request.POST or None, user=request.user)
    interface = AddInterfaceForm(
        request.POST or None,
        user=request.user
    )
    domain = DomainForm(request.POST or None, user=user)
    if machine.is_valid() and interface.is_valid():
        new_machine_obj = machine.save(commit=False)
        new_machine_obj.user = user
        new_interface_obj = interface.save(commit=False)
        domain.instance.interface_parent = new_interface_obj
        if domain.is_valid():
            new_domain = domain.save(commit=False)
            new_machine_obj.save()
            new_interface_obj.machine = new_machine_obj
            new_interface_obj.save()
            new_domain.interface_parent = new_interface_obj
            new_domain.save()
            messages.success(request, "La machine a été créée")
            return redirect(reverse(
                'users:profil',
                kwargs={'userid': str(user.id)}
            ))
    i_mbf_param = generate_ipv4_mbf_param(interface, False)
    return form(
        {
            'machineform': machine,
            'interfaceform': interface,
            'domainform': domain,
            'i_mbf_param': i_mbf_param,
            'action_name': 'Créer une machine'
        },
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Interface)
def edit_interface(request, interface_instance, **_kwargs):
    """ Edition d'une interface. Distingue suivant les droits les valeurs
    de interfaces et machines que l'user peut modifier infra permet de
    modifier le propriétaire"""

    machine_form = EditMachineForm(
        request.POST or None,
        instance=interface_instance.machine,
        user=request.user
    )
    interface_form = EditInterfaceForm(
        request.POST or None,
        instance=interface_instance,
        user=request.user
    )
    domain_form = DomainForm(
        request.POST or None,
        instance=interface_instance.domain
    )
    if (machine_form.is_valid() and
            interface_form.is_valid() and
            domain_form.is_valid()):
        new_machine_obj = machine_form.save(commit=False)
        new_interface_obj = interface_form.save(commit=False)
        new_domain_obj = domain_form.save(commit=False)
        if machine_form.changed_data:
            new_machine_obj.save()
        if interface_form.changed_data:
            new_interface_obj.save()
        if domain_form.changed_data:
            new_domain_obj.save()
        messages.success(request, "La machine a été modifiée")
        return redirect(reverse(
            'users:profil',
            kwargs={'userid': str(interface_instance.machine.user.id)}
        ))
    i_mbf_param = generate_ipv4_mbf_param(interface_form, False)
    return form(
        {
            'machineform': machine_form,
            'interfaceform': interface_form,
            'domainform': domain_form,
            'i_mbf_param': i_mbf_param,
            'action_name': 'Editer une interface'
        },
        'machines/machine.html',
        request
    )


@login_required
@can_delete(Machine)
def del_machine(request, machine, **_kwargs):
    """ Supprime une machine, interfaces en mode cascade"""
    if request.method == "POST":
        machine.delete()
        messages.success(request, "La machine a été détruite")
        return redirect(reverse(
            'users:profil',
            kwargs={'userid': str(machine.user.id)}
        ))
    return form(
        {'objet': machine, 'objet_name': 'machine'},
        'machines/delete.html',
        request
    )


@login_required
@can_create(Interface)
@can_edit(Machine)
def new_interface(request, machine, **_kwargs):
    """ Ajoute une interface et son domain associé à une machine existante"""

    interface_form = AddInterfaceForm(request.POST or None, user=request.user)
    domain_form = DomainForm(request.POST or None)
    if interface_form.is_valid():
        new_interface_obj = interface_form.save(commit=False)
        domain_form.instance.interface_parent = new_interface_obj
        new_interface_obj.machine = machine
        if domain_form.is_valid():
            new_domain_obj = domain_form.save(commit=False)
            new_interface_obj.save()
            new_domain_obj.interface_parent = new_interface_obj
            new_domain_obj.save()
            messages.success(request, "L'interface a été ajoutée")
            return redirect(reverse(
                'users:profil',
                kwargs={'userid': str(machine.user.id)}
            ))
    i_mbf_param = generate_ipv4_mbf_param(interface_form, False)
    return form(
        {
            'interfaceform': interface_form,
            'domainform': domain_form,
            'i_mbf_param': i_mbf_param,
            'action_name': 'Créer une interface'
        },
        'machines/machine.html',
        request
    )


@login_required
@can_delete(Interface)
def del_interface(request, interface, **_kwargs):
    """ Supprime une interface. Domain objet en mode cascade"""
    if request.method == "POST":
        machine = interface.machine
        interface.delete()
        if not machine.interface_set.all():
            machine.delete()
        messages.success(request, "L'interface a été détruite")
        return redirect(reverse(
            'users:profil',
            kwargs={'userid': str(request.user.id)}
        ))
    return form(
        {'objet': interface, 'objet_name': 'interface'},
        'machines/delete.html',
        request
    )


@login_required
@can_create(Ipv6List)
@can_edit(Interface)
def new_ipv6list(request, interface, **_kwargs):
    """Nouvelle ipv6"""
    ipv6list_instance = Ipv6List(interface=interface)
    ipv6 = Ipv6ListForm(
        request.POST or None,
        instance=ipv6list_instance,
        user=request.user
    )
    if ipv6.is_valid():
        ipv6.save()
        messages.success(request, "Ipv6 ajoutée")
        return redirect(reverse(
            'machines:index-ipv6',
            kwargs={'interfaceid': str(interface.id)}
        ))
    return form(
        {'ipv6form': ipv6, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Ipv6List)
def edit_ipv6list(request, ipv6list_instance, **_kwargs):
    """Edition d'une ipv6"""
    ipv6 = Ipv6ListForm(
        request.POST or None,
        instance=ipv6list_instance,
        user=request.user
    )
    if ipv6.is_valid():
        if ipv6.changed_data:
            ipv6.save()
            messages.success(request, "Ipv6 modifiée")
        return redirect(reverse(
            'machines:index-ipv6',
            kwargs={'interfaceid': str(ipv6list_instance.interface.id)}
        ))
    return form(
        {'ipv6form': ipv6, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete(Ipv6List)
def del_ipv6list(request, ipv6list, **_kwargs):
    """ Supprime une ipv6"""
    if request.method == "POST":
        interfaceid = ipv6list.interface.id
        ipv6list.delete()
        messages.success(request, "L'ipv6 a été détruite")
        return redirect(reverse(
            'machines:index-ipv6',
            kwargs={'interfaceid': str(interfaceid)}
        ))
    return form(
        {'objet': ipv6list, 'objet_name': 'ipv6'},
        'machines/delete.html',
        request
    )


@login_required
@can_create(IpType)
def add_iptype(request):
    """ Ajoute un range d'ip. Intelligence dans le models, fonction views
    minimaliste"""

    iptype = IpTypeForm(request.POST or None)
    if iptype.is_valid():
        iptype.save()
        messages.success(request, "Ce type d'ip a été ajouté")
        return redirect(reverse('machines:index-iptype'))
    return form(
        {'iptypeform': iptype, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(IpType)
def edit_iptype(request, iptype_instance, **_kwargs):
    """ Edition d'un range. Ne permet pas de le redimensionner pour éviter
    l'incohérence"""

    iptype = EditIpTypeForm(request.POST or None, instance=iptype_instance)
    if iptype.is_valid():
        if iptype.changed_data:
            iptype.save()
            messages.success(request, "Type d'ip modifié")
        return redirect(reverse('machines:index-iptype'))
    return form(
        {'iptypeform': iptype, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(IpType)
def del_iptype(request, instances):
    """ Suppression d'un range ip. Supprime les objets ip associés"""
    iptype = DelIpTypeForm(request.POST or None, instances=instances)
    if iptype.is_valid():
        iptype_dels = iptype.cleaned_data['iptypes']
        for iptype_del in iptype_dels:
            try:
                iptype_del.delete()
                messages.success(request, "Le type d'ip a été supprimé")
            except ProtectedError:
                messages.error(
                    request,
                    ("Le type d'ip %s est affectée à au moins une machine, "
                     "vous ne pouvez pas le supprimer" % iptype_del)
                )
        return redirect(reverse('machines:index-iptype'))
    return form(
        {'iptypeform': iptype, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(MachineType)
def add_machinetype(request):
    """ View used to add a Machinetype object """
    machinetype = MachineTypeForm(request.POST or None)
    if machinetype.is_valid():
        machinetype.save()
        messages.success(request, "Ce type de machine a été ajouté")
        return redirect(reverse('machines:index-machinetype'))
    return form(
        {'machinetypeform': machinetype, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(MachineType)
def edit_machinetype(request, machinetype_instance, **_kwargs):
    """ View used to edit a MachineType object """
    machinetype = MachineTypeForm(
        request.POST or None,
        instance=machinetype_instance
    )
    if machinetype.is_valid():
        if machinetype.changed_data:
            machinetype.save()
            messages.success(request, "Type de machine modifié")
        return redirect(reverse('machines:index-machinetype'))
    return form(
        {'machinetypeform': machinetype, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(MachineType)
def del_machinetype(request, instances):
    """ View used to delete a MachineType object """
    machinetype = DelMachineTypeForm(request.POST or None, instances=instances)
    if machinetype.is_valid():
        machinetype_dels = machinetype.cleaned_data['machinetypes']
        for machinetype_del in machinetype_dels:
            try:
                machinetype_del.delete()
                messages.success(request, "Le type de machine a été supprimé")
            except ProtectedError:
                messages.error(
                    request,
                    ("Le type de machine %s est affectée à au moins une "
                     "machine, vous ne pouvez pas le supprimer"
                     % machinetype_del)
                )
        return redirect(reverse('machines:index-machinetype'))
    return form(
        {'machinetypeform': machinetype, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Extension)
def add_extension(request):
    """ View used to add an Extension object """
    extension = ExtensionForm(request.POST or None)
    if extension.is_valid():
        extension.save()
        messages.success(request, "Cette extension a été ajoutée")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'extensionform': extension, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Extension)
def edit_extension(request, extension_instance, **_kwargs):
    """ View used to edit an Extension object """
    extension = ExtensionForm(
        request.POST or None,
        instance=extension_instance
    )
    if extension.is_valid():
        if extension.changed_data:
            extension.save()
            messages.success(request, "Extension modifiée")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'extensionform': extension, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Extension)
def del_extension(request, instances):
    """ View used to delete an Extension object """
    extension = DelExtensionForm(request.POST or None, instances=instances)
    if extension.is_valid():
        extension_dels = extension.cleaned_data['extensions']
        for extension_del in extension_dels:
            try:
                extension_del.delete()
                messages.success(request, "L'extension a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("L'extension %s est affectée à au moins un type de "
                     "machine, vous ne pouvez pas la supprimer"
                     % extension_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'extensionform': extension, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(SOA)
def add_soa(request):
    """ View used to add a SOA object """
    soa = SOAForm(request.POST or None)
    if soa.is_valid():
        soa.save()
        messages.success(request, "Cet enregistrement SOA a été ajouté")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'soaform': soa, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(SOA)
def edit_soa(request, soa_instance, **_kwargs):
    """ View used to edit a SOA object """
    soa = SOAForm(request.POST or None, instance=soa_instance)
    if soa.is_valid():
        if soa.changed_data:
            soa.save()
            messages.success(request, "SOA modifié")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'soaform': soa, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(SOA)
def del_soa(request, instances):
    """ View used to delete a SOA object """
    soa = DelSOAForm(request.POST or None, instances=instances)
    if soa.is_valid():
        soa_dels = soa.cleaned_data['soa']
        for soa_del in soa_dels:
            try:
                soa_del.delete()
                messages.success(request, "Le SOA a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le SOA suivant %s ne peut être supprimé"
                     % soa_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'soaform': soa, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Mx)
def add_mx(request):
    """ View used to add a MX object """
    mx = MxForm(request.POST or None)
    if mx.is_valid():
        mx.save()
        messages.success(request, "Cet enregistrement mx a été ajouté")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'mxform': mx, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Mx)
def edit_mx(request, mx_instance, **_kwargs):
    """ View used to edit a MX object """
    mx = MxForm(request.POST or None, instance=mx_instance)
    if mx.is_valid():
        if mx.changed_data:
            mx.save()
            messages.success(request, "Mx modifié")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'mxform': mx, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Mx)
def del_mx(request, instances):
    """ View used to delete a MX object """
    mx = DelMxForm(request.POST or None, instances=instances)
    if mx.is_valid():
        mx_dels = mx.cleaned_data['mx']
        for mx_del in mx_dels:
            try:
                mx_del.delete()
                messages.success(request, "L'mx a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Mx suivant %s ne peut être supprimé"
                     % mx_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'mxform': mx, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Ns)
def add_ns(request):
    """ View used to add a NS object """
    ns = NsForm(request.POST or None)
    if ns.is_valid():
        ns.save()
        messages.success(request, "Cet enregistrement ns a été ajouté")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'nsform': ns, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Ns)
def edit_ns(request, ns_instance, **_kwargs):
    """ View used to edit a NS object """
    ns = NsForm(request.POST or None, instance=ns_instance)
    if ns.is_valid():
        if ns.changed_data:
            ns.save()
            messages.success(request, "Ns modifié")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'nsform': ns, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Ns)
def del_ns(request, instances):
    """ View used to delete a NS object """
    ns = DelNsForm(request.POST or None, instances=instances)
    if ns.is_valid():
        ns_dels = ns.cleaned_data['ns']
        for ns_del in ns_dels:
            try:
                ns_del.delete()
                messages.success(request, "Le ns a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Ns suivant %s ne peut être supprimé"
                     % ns_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'nsform': ns, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )

@login_required
@can_create(DName)
def add_dname(request):
    """ View used to add a DName object """
    dname = DNameForm(request.POST or None)
    if dname.is_valid():
        dname.save()
        messages.success(request, "This DNAME record has been added")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'dnameform': dname, 'action_name': "Create"},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(DName)
def edit_dname(request, dname_instance, **_kwargs):
    """ View used to edit a DName object """
    dname = DNameForm(request.POST or None, instance=dname_instance)
    if dname.is_valid():
        if dname.changed_data:
            dname.save()
            messages.success(request, "DName successfully edited")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'dnameform': dname, 'action_name': "Edit"},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(DName)
def del_dname(request, instances):
    """ View used to delete a DName object """
    dname = DelDNameForm(request.POST or None, instances=instances)
    if dname.is_valid():
        dname_dels = dname.cleaned_data['dname']
        for dname_del in dname_dels:
            try:
                dname_del.delete()
                messages.success(request,
                                 "The DNAME %s has been deleted" % dname_del)
            except ProtectedError:
                messages.error(
                    request,
                    "The DNAME %s can not be deleted" % dname_del
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'dnameform': dname, 'action_name': 'Delete'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Txt)
def add_txt(request):
    """ View used to add a TXT object """
    txt = TxtForm(request.POST or None)
    if txt.is_valid():
        txt.save()
        messages.success(request, "Cet enregistrement text a été ajouté")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'txtform': txt, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Txt)
def edit_txt(request, txt_instance, **_kwargs):
    """ View used to edit a TXT object """
    txt = TxtForm(request.POST or None, instance=txt_instance)
    if txt.is_valid():
        if txt.changed_data:
            txt.save()
            messages.success(request, "Txt modifié")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'txtform': txt, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Txt)
def del_txt(request, instances):
    """ View used to delete a TXT object """
    txt = DelTxtForm(request.POST or None, instances=instances)
    if txt.is_valid():
        txt_dels = txt.cleaned_data['txt']
        for txt_del in txt_dels:
            try:
                txt_del.delete()
                messages.success(request, "Le txt a été supprimé")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Txt suivant %s ne peut être supprimé"
                     % txt_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'txtform': txt, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Srv)
def add_srv(request):
    """ View used to add a SRV object """
    srv = SrvForm(request.POST or None)
    if srv.is_valid():
        srv.save()
        messages.success(request, "Cet enregistrement srv a été ajouté")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'srvform': srv, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Srv)
def edit_srv(request, srv_instance, **_kwargs):
    """ View used to edit a SRV object """
    srv = SrvForm(request.POST or None, instance=srv_instance)
    if srv.is_valid():
        if srv.changed_data:
            srv.save()
            messages.success(request, "Srv modifié")
        return redirect(reverse('machines:index-extension'))
    return form(
        {'srvform': srv, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Srv)
def del_srv(request, instances):
    """ View used to delete a SRV object """
    srv = DelSrvForm(request.POST or None, instances=instances)
    if srv.is_valid():
        srv_dels = srv.cleaned_data['srv']
        for srv_del in srv_dels:
            try:
                srv_del.delete()
                messages.success(request, "L'srv a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Srv suivant %s ne peut être supprimé"
                     % srv_del)
                )
        return redirect(reverse('machines:index-extension'))
    return form(
        {'srvform': srv, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Domain)
@can_edit(Interface)
def add_alias(request, interface, interfaceid):
    """ View used to add an Alias object """
    alias = AliasForm(request.POST or None, user=request.user)
    if alias.is_valid():
        alias = alias.save(commit=False)
        alias.cname = interface.domain
        alias.save()
        messages.success(request, "Cet alias a été ajouté")
        return redirect(reverse(
            'machines:index-alias',
            kwargs={'interfaceid': str(interfaceid)}
        ))
    return form(
        {'aliasform': alias, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Domain)
def edit_alias(request, domain_instance, **_kwargs):
    """ View used to edit an Alias object """
    alias = AliasForm(
        request.POST or None,
        instance=domain_instance,
        user=request.user
    )
    if alias.is_valid():
        if alias.changed_data:
            domain_instance = alias.save()
            messages.success(request, "Alias modifié")
        return redirect(reverse(
            'machines:index-alias',
            kwargs={
                'interfaceid': str(domain_instance.cname.interface_parent.id)
            }
        ))
    return form(
        {'aliasform': alias, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Interface)
def del_alias(request, interface, interfaceid):
    """ View used to delete an Alias object """
    alias = DelAliasForm(request.POST or None, interface=interface)
    if alias.is_valid():
        alias_dels = alias.cleaned_data['alias']
        for alias_del in alias_dels:
            try:
                alias_del.delete()
                messages.success(
                    request,
                    "L'alias %s a été supprimé" % alias_del
                )
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur l'alias suivant %s ne peut être supprimé"
                     % alias_del)
                )
        return redirect(reverse(
            'machines:index-alias',
            kwargs={'interfaceid': str(interfaceid)}
        ))
    return form(
        {'aliasform': alias, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Service)
def add_service(request):
    """ View used to add a Service object """
    service = ServiceForm(request.POST or None)
    if service.is_valid():
        service.save()
        messages.success(request, "Cet enregistrement service a été ajouté")
        return redirect(reverse('machines:index-service'))
    return form(
        {'serviceform': service, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Service)
def edit_service(request, service_instance, **_kwargs):
    """ View used to edit a Service object """
    service = ServiceForm(request.POST or None, instance=service_instance)
    if service.is_valid():
        if service.changed_data:
            service.save()
            messages.success(request, "Service modifié")
        return redirect(reverse('machines:index-service'))
    return form(
        {'serviceform': service, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Service)
def del_service(request, instances):
    """ View used to delete a Service object """
    service = DelServiceForm(request.POST or None, instances=instances)
    if service.is_valid():
        service_dels = service.cleaned_data['service']
        for service_del in service_dels:
            try:
                service_del.delete()
                messages.success(request, "Le service a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le service suivant %s ne peut être supprimé"
                     % service_del)
                )
        return redirect(reverse('machines:index-service'))
    return form(
        {'serviceform': service, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Vlan)
def add_vlan(request):
    """ View used to add a VLAN object """
    vlan = VlanForm(request.POST or None)
    if vlan.is_valid():
        vlan.save()
        messages.success(request, "Cet enregistrement vlan a été ajouté")
        return redirect(reverse('machines:index-vlan'))
    return form(
        {'vlanform': vlan, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Vlan)
def edit_vlan(request, vlan_instance, **_kwargs):
    """ View used to edit a VLAN object """
    vlan = VlanForm(request.POST or None, instance=vlan_instance)
    if vlan.is_valid():
        if vlan.changed_data:
            vlan.save()
            messages.success(request, "Vlan modifié")
        return redirect(reverse('machines:index-vlan'))
    return form(
        {'vlanform': vlan, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Vlan)
def del_vlan(request, instances):
    """ View used to delete a VLAN object """
    vlan = DelVlanForm(request.POST or None, instances=instances)
    if vlan.is_valid():
        vlan_dels = vlan.cleaned_data['vlan']
        for vlan_del in vlan_dels:
            try:
                vlan_del.delete()
                messages.success(request, "Le vlan a été supprimée")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Vlan suivant %s ne peut être supprimé"
                     % vlan_del)
                )
        return redirect(reverse('machines:index-vlan'))
    return form(
        {'vlanform': vlan, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_create(Nas)
def add_nas(request):
    """ View used to add a NAS object """
    nas = NasForm(request.POST or None)
    if nas.is_valid():
        nas.save()
        messages.success(request, "Cet enregistrement nas a été ajouté")
        return redirect(reverse('machines:index-nas'))
    return form(
        {'nasform': nas, 'action_name': 'Créer'},
        'machines/machine.html',
        request
    )


@login_required
@can_edit(Nas)
def edit_nas(request, nas_instance, **_kwargs):
    """ View used to edit a NAS object """
    nas = NasForm(request.POST or None, instance=nas_instance)
    if nas.is_valid():
        if nas.changed_data:
            nas.save()
            messages.success(request, "Nas modifié")
        return redirect(reverse('machines:index-nas'))
    return form(
        {'nasform': nas, 'action_name': 'Editer'},
        'machines/machine.html',
        request
    )


@login_required
@can_delete_set(Nas)
def del_nas(request, instances):
    """ View used to delete a NAS object """
    nas = DelNasForm(request.POST or None, instances=instances)
    if nas.is_valid():
        nas_dels = nas.cleaned_data['nas']
        for nas_del in nas_dels:
            try:
                nas_del.delete()
                messages.success(request, "Le nas a été supprimé")
            except ProtectedError:
                messages.error(
                    request,
                    ("Erreur le Nas suivant %s ne peut être supprimé"
                     % nas_del)
                )
        return redirect(reverse('machines:index-nas'))
    return form(
        {'nasform': nas, 'action_name': 'Supprimer'},
        'machines/machine.html',
        request
    )


@login_required
@can_view_all(Machine)
def index(request):
    """ The home view for this app. Displays the list of registered
    machines in Re2o """
    pagination_large_number = (GeneralOption
                               .get_cached_value('pagination_large_number'))
    machines_list = (Machine.objects
                     .select_related('user')
                     .prefetch_related('interface_set__domain__extension')
                     .prefetch_related('interface_set__ipv4__ip_type')
                     .prefetch_related(
                         'interface_set__type__ip_type__extension'
                     ).prefetch_related(
                         'interface_set__domain__related_domain__extension'
                     ).prefetch_related('interface_set__ipv6list'))
    machines_list = SortTable.sort(
        machines_list,
        request.GET.get('col'),
        request.GET.get('order'),
        SortTable.MACHINES_INDEX
    )
    machines_list = re2o_paginator(
        request,
        machines_list,
        pagination_large_number
    )
    return render(
        request,
        'machines/index.html',
        {'machines_list': machines_list}
    )


@login_required
@can_view_all(IpType)
def index_iptype(request):
    """ View displaying the list of existing types of IP """
    iptype_list = (IpType.objects
                   .select_related('extension')
                   .select_related('vlan')
                   .order_by('type'))
    return render(
        request,
        'machines/index_iptype.html',
        {'iptype_list': iptype_list}
    )


@login_required
@can_view_all(Vlan)
def index_vlan(request):
    """ View displaying the list of existing VLANs """
    vlan_list = Vlan.objects.prefetch_related('iptype_set').order_by('vlan_id')
    return render(
        request,
        'machines/index_vlan.html',
        {'vlan_list': vlan_list}
    )


@login_required
@can_view_all(MachineType)
def index_machinetype(request):
    """ View displaying the list of existing types of machines """
    machinetype_list = (MachineType.objects
                        .select_related('ip_type')
                        .order_by('type'))
    return render(
        request,
        'machines/index_machinetype.html',
        {'machinetype_list': machinetype_list}
    )


@login_required
@can_view_all(Nas)
def index_nas(request):
    """ View displaying the list of existing NAS """
    nas_list = (Nas.objects
                .select_related('machine_type')
                .select_related('nas_type')
                .order_by('name'))
    return render(request, 'machines/index_nas.html', {'nas_list': nas_list})


@login_required
@can_view_all(SOA, Mx, Ns, Txt, DName, Srv, Extension)
def index_extension(request):
    """ View displaying the list of existing extensions, the list of
    existing SOA records, the list of existing MX records , the list of
    existing NS records, the list of existing TXT records and the list of
    existing SRV records """
    extension_list = (Extension.objects
                      .select_related('origin')
                      .select_related('soa')
                      .order_by('name'))
    soa_list = SOA.objects.order_by('name')
    mx_list = (Mx.objects
               .order_by('zone')
               .select_related('zone')
               .select_related('name__extension'))
    ns_list = (Ns.objects
               .order_by('zone')
               .select_related('zone')
               .select_related('ns__extension'))
    txt_list = Txt.objects.all().select_related('zone')
    dname_list = DName.objects.all().select_related('zone')
    srv_list = (Srv.objects
                .all()
                .select_related('extension')
                .select_related('target__extension'))
    return render(
        request,
        'machines/index_extension.html',
        {
            'extension_list': extension_list,
            'soa_list': soa_list,
            'mx_list': mx_list,
            'ns_list': ns_list,
            'txt_list': txt_list,
            'dname_list': dname_list,
            'srv_list': srv_list
        }
    )


@login_required
@can_edit(Interface)
def index_alias(request, interface, interfaceid):
    """ View used to display the list of existing alias of an interface """
    alias_list = Domain.objects.filter(
        cname=Domain.objects.filter(interface_parent=interface)
    ).order_by('name')
    return render(
        request,
        'machines/index_alias.html',
        {'alias_list': alias_list, 'interface_id': interfaceid}
    )


@login_required
@can_edit(Interface)
def index_ipv6(request, interface, interfaceid):
    """ View used to display the list of existing IPv6 of an interface """
    ipv6_list = Ipv6List.objects.filter(interface=interface)
    return render(
        request,
        'machines/index_ipv6.html',
        {'ipv6_list': ipv6_list, 'interface_id': interfaceid}
    )


@login_required
@can_view_all(Service)
def index_service(request):
    """ View used to display the list of existing services """
    service_list = (Service.objects
                    .prefetch_related(
                        'service_link_set__server__domain__extension'
                    ).all())
    servers_list = (Service_link.objects
                    .select_related('server__domain__extension')
                    .select_related('service')
                    .all())
    return render(
        request,
        'machines/index_service.html',
        {'service_list': service_list, 'servers_list': servers_list}
    )


@login_required
@can_view_all(OuverturePortList)
def index_portlist(request):
    """ View used to display the list of existing port policies """
    port_list = (OuverturePortList.objects
                 .prefetch_related('ouvertureport_set')
                 .prefetch_related('interface_set__domain__extension')
                 .prefetch_related('interface_set__machine__user')
                 .order_by('name'))
    return render(
        request,
        "machines/index_portlist.html",
        {'port_list': port_list}
    )


@login_required
@can_edit(OuverturePortList)
def edit_portlist(request, ouvertureportlist_instance, **_kwargs):
    """ View used to edit a port policy """
    port_list = EditOuverturePortListForm(
        request.POST or None,
        instance=ouvertureportlist_instance
    )
    port_formset = modelformset_factory(
        OuverturePort,
        fields=('begin', 'end', 'protocole', 'io'),
        extra=0,
        can_delete=True,
        min_num=1,
        validate_min=True,
    )(
        request.POST or None,
        queryset=ouvertureportlist_instance.ouvertureport_set.all()
    )
    if port_list.is_valid() and port_formset.is_valid():
        if port_list.changed_data:
            pl = port_list.save()
        else:
            pl = ouvertureportlist_instance
        instances = port_formset.save(commit=False)
        for to_delete in port_formset.deleted_objects:
            to_delete.delete()
        for port in instances:
            port.port_list = pl
            port.save()
        messages.success(request, "Liste de ports modifiée")
        return redirect(reverse('machines:index-portlist'))
    return form(
        {'port_list': port_list, 'ports': port_formset},
        'machines/edit_portlist.html',
        request
    )


@login_required
@can_delete(OuverturePortList)
def del_portlist(request, port_list_instance, **_kwargs):
    """ View used to delete a port policy """
    port_list_instance.delete()
    messages.success(request, "La liste de ports a été supprimée")
    return redirect(reverse('machines:index-portlist'))


@login_required
@can_create(OuverturePortList)
def add_portlist(request):
    """ View used to add a port policy """
    port_list = EditOuverturePortListForm(request.POST or None)
    port_formset = modelformset_factory(
            OuverturePort,
            fields=('begin', 'end', 'protocole', 'io'),
            extra=0,
            can_delete=True,
            min_num=1,
            validate_min=True,
    )(request.POST or None, queryset=OuverturePort.objects.none())
    if port_list.is_valid() and port_formset.is_valid():
        pl = port_list.save()
        instances = port_formset.save(commit=False)
        for to_delete in port_formset.deleted_objects:
            to_delete.delete()
        for port in instances:
            port.port_list = pl
            port.save()
        messages.success(request, "Liste de ports créée")
        return redirect(reverse('machines:index-portlist'))
    return form(
        {'port_list': port_list, 'ports': port_formset},
        'machines/edit_portlist.html',
        request
    )


@login_required
@can_create(OuverturePort)
@can_edit(Interface)
def configure_ports(request, interface_instance, **_kwargs):
    """ View to display the list of configured port policy for an
    interface """
    if not interface_instance.may_have_port_open():
        messages.error(
            request,
            ("Attention, l'ipv4 n'est pas publique, l'ouverture n'aura pas "
             "d'effet en v4")
        )
    interface = EditOuverturePortConfigForm(
        request.POST or None,
        instance=interface_instance
    )
    if interface.is_valid():
        if interface.changed_data:
            interface.save()
            messages.success(request, "Configuration des ports mise à jour.")
        return redirect(reverse('machines:index'))
    return form(
        {'interfaceform': interface, 'action_name': 'Editer la configuration'},
        'machines/machine.html',
        request
    )


## Framework Rest


class JSONResponse(HttpResponse):
    """ Class to build a JSON response. Used for API """
    def __init__(self, data, **kwargs):
        content = JSONRenderer().render(data)
        kwargs['content_type'] = 'application/json'
        super(JSONResponse, self).__init__(content, **kwargs)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def mac_ip_list(_request):
    """ API view to list the active and assigned interfaces """
    interfaces = all_active_assigned_interfaces()
    seria = InterfaceSerializer(interfaces, many=True)
    return seria.data


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def full_mac_ip_list(_request):
    """ API view to list the active and assigned interfaces. More
    detailed than mac_ip_list(request) """
    interfaces = all_active_assigned_interfaces(full=True)
    seria = FullInterfaceSerializer(interfaces, many=True)
    return seria.data


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def alias(_request):
    """ API view to list the alias (CNAME) for all assigned interfaces """
    alias = (Domain.objects
             .filter(interface_parent=None)
             .filter(
                 cname__in=Domain.objects.filter(
                     interface_parent__in=Interface.objects.exclude(ipv4=None)
                 )
             ).select_related('extension')
             .select_related('cname__extension'))
    seria = DomainSerializer(alias, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def corresp(_request):
    """ API view to list the types of IP and infos about it """
    type = IpType.objects.all().select_related('extension')
    seria = TypeSerializer(type, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def mx(_request):
    """ API view to list the MX records """
    mx = (Mx.objects.all()
          .select_related('zone')
          .select_related('name__extension'))
    seria = MxSerializer(mx, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def txt(_request):
    """ API view to list the TXT records """
    txt = Txt.objects.all().select_related('zone')
    seria = TxtSerializer(txt, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def srv(_request):
    """ API view to list the SRV records """
    srv = (Srv.objects
           .all()
           .select_related('extension')
           .select_related('target__extension'))
    seria = SrvSerializer(srv, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def ns(_request):
    """ API view to list the NS records """
    ns = (Ns.objects
          .exclude(
              ns__in=Domain.objects.filter(
                  interface_parent__in=Interface.objects.filter(ipv4=None)
              )
          ).select_related('zone')
          .select_related('ns__extension'))
    seria = NsSerializer(ns, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def zones(_request):
    """ API view to list the DNS zones """
    zones = Extension.objects.all().select_related('origin')
    seria = ExtensionSerializer(zones, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def mac_ip(request):
    """ API view to list the active and assigned interfaces """
    seria = mac_ip_list(request)
    return JSONResponse(seria)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def mac_ip_dns(request):
    """ API view to list the active and assigned interfaces. More
    detailed than mac_ip_list(request) """
    seria = full_mac_ip_list(request)
    return JSONResponse(seria)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def service_servers(_request):
    """ API view to list the service links """
    service_link = (Service_link.objects
                    .all()
                    .select_related('server__domain')
                    .select_related('service'))
    seria = ServiceServersSerializer(service_link, many=True)
    return JSONResponse(seria.data)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def ouverture_ports(_request):
    """ API view to list the port policies for each IP """
    r = {'ipv4': {}, 'ipv6': {}}
    for o in (OuverturePortList.objects
              .all()
              .prefetch_related('ouvertureport_set')
              .prefetch_related('interface_set', 'interface_set__ipv4')):
        pl = {
            "tcp_in": set(map(
                str,
                o.ouvertureport_set.filter(
                    protocole=OuverturePort.TCP,
                    io=OuverturePort.IN
                )
            )),
            "tcp_out": set(map(
                str,
                o.ouvertureport_set.filter(
                    protocole=OuverturePort.TCP,
                    io=OuverturePort.OUT
                )
            )),
            "udp_in": set(map(
                str,
                o.ouvertureport_set.filter(
                    protocole=OuverturePort.UDP,
                    io=OuverturePort.IN
                )
            )),
            "udp_out": set(map(
                str,
                o.ouvertureport_set.filter(
                    protocole=OuverturePort.UDP,
                    io=OuverturePort.OUT
                )
            )),
        }
        for i in filter_active_interfaces(o.interface_set):
            if i.may_have_port_open():
                d = r['ipv4'].get(i.ipv4.ipv4, {})
                d["tcp_in"] = (d.get("tcp_in", set())
                               .union(pl["tcp_in"]))
                d["tcp_out"] = (d.get("tcp_out", set())
                                .union(pl["tcp_out"]))
                d["udp_in"] = (d.get("udp_in", set())
                               .union(pl["udp_in"]))
                d["udp_out"] = (d.get("udp_out", set())
                                .union(pl["udp_out"]))
                r['ipv4'][i.ipv4.ipv4] = d
            if i.ipv6():
                for ipv6 in i.ipv6():
                    d = r['ipv6'].get(ipv6.ipv6, {})
                    d["tcp_in"] = (d.get("tcp_in", set())
                                   .union(pl["tcp_in"]))
                    d["tcp_out"] = (d.get("tcp_out", set())
                                    .union(pl["tcp_out"]))
                    d["udp_in"] = (d.get("udp_in", set())
                                   .union(pl["udp_in"]))
                    d["udp_out"] = (d.get("udp_out", set())
                                    .union(pl["udp_out"]))
                    r['ipv6'][ipv6.ipv6] = d
    return JSONResponse(r)


@csrf_exempt
@login_required
@permission_required('machines.serveur')
def regen_achieved(request):
    """ API view to list the regen status for each (Service link, Server)
    couple """
    obj = (Service_link.objects
           .filter(
               service__in=Service.objects.filter(
                   service_type=request.POST['service']
               ),
               server__in=Interface.objects.filter(
                   domain__in=Domain.objects.filter(
                       name=request.POST['server']
                   )
               )
           ))
    if obj:
        obj.first().done_regen()
    return HttpResponse("Ok")