Firewall on Demand

# Create your views here.

import urllib2

import socket

import json

from django import forms

from django.views.decorators.csrf import csrf_exempt

from django.core import urlresolvers

from django.core import serializers

from django.contrib.auth.decorators import login_required

from django.http import HttpResponseRedirect, HttpResponseForbidden, HttpResponse

from django.shortcuts import get_object_or_404, render_to_response

from django.core.context_processors import request

from django.template.context import RequestContext

from django.template.loader import get_template, render_to_string

from django.utils import simplejson

from django.core.urlresolvers import reverse

from django.contrib import messages

from flowspy.accounts.models import *

from django.contrib.auth import authenticate, login

from django.forms.models import model_to_dict

from flowspy.flowspec.forms import * 

from flowspy.flowspec.models import *

from copy import deepcopy

from flowspy.utils.decorators import shib_required

import datetime

from django.views.decorators.cache import never_cache

from django.conf import settings

from django.core.mail import mail_admins, mail_managers, send_mail

def days_offset(): return datetime.date.today() + datetime.timedelta(days = settings.EXPIRATION_DAYS_OFFSET)

@login_required

def user_routes(request):

    user_routes = Route.objects.filter(applier=request.user)

    return render_to_response('user_routes.html', {'routes': user_routes},

                              context_instance=RequestContext(request))

def welcome(request):

    return render_to_response('welcome.html', context_instance=RequestContext(request))

@login_required

@never_cache

def group_routes(request):

    group_routes = []

    peer = request.user.get_profile().peer

    if peer:

       peer_members = UserProfile.objects.filter(peer=peer)

       users = [prof.user for prof in peer_members]

       group_routes = Route.objects.filter(applier__in=users)

    return render_to_response('user_routes.html', {'routes': group_routes},

                              context_instance=RequestContext(request))

@login_required

@never_cache

def add_route(request):

    applier = request.user.pk

    applier_peer_networks = request.user.get_profile().peer.networks.all()

    if not applier_peer_networks:

         messages.add_message(request, messages.WARNING,

                             "Insufficient rights on administrative networks. Cannot add rule. Contact your administrator")

         return HttpResponseRedirect(reverse("group-routes"))

    if request.method == "GET":

        form = RouteForm()

        return render_to_response('apply.html', {'form': form, 'applier': applier},

                                  context_instance=RequestContext(request))

    else:

        form = RouteForm(request.POST)

        if form.is_valid():

            route=form.save(commit=False)

            route.applier = request.user

            route.expires = days_offset()

            route.status = "PENDING"

            route.save()

            form.save_m2m()

            route.commit_add()

            mail_body = render_to_string("rule_add_mail.txt",

                                             {"route": route})

            mail_admins("Rule %s creation request submitted by %s" %(route.name, route.applier.username),

                          mail_body, fail_silently=True)

            return HttpResponseRedirect(reverse("group-routes"))

        else:

            return render_to_response('apply.html', {'form': form, 'applier':applier},

                                      context_instance=RequestContext(request))

@login_required

@never_cache

def edit_route(request, route_slug):

    applier = request.user.pk

    applier_peer = request.user.get_profile().peer

    route_edit = get_object_or_404(Route, name=route_slug)

    route_edit_applier_peer = route_edit.applier.get_profile().peer

    if applier_peer != route_edit_applier_peer:

        messages.add_message(request, messages.WARNING,

                             "Insufficient rights to edit rule %s" %(route_slug))

        return HttpResponseRedirect(reverse("group-routes"))

    if route_edit.status == "ADMININACTIVE" :

        messages.add_message(request, messages.WARNING,

                             "Administrator has disabled editing of rule %s" %(route_slug))

        return HttpResponseRedirect(reverse("group-routes"))

    if route_edit.status == "EXPIRED" :

        messages.add_message(request, messages.WARNING,

                             "Cannot edit the expired rule %s. Contact helpdesk to enable it" %(route_slug))

        return HttpResponseRedirect(reverse("group-routes"))

    if route_edit.status == "PENDING" :

        messages.add_message(request, messages.WARNING,

                             "Cannot edit a pending rule: %s." %(route_slug))

        return HttpResponseRedirect(reverse("group-routes"))

    route_original = deepcopy(route_edit)

    if request.POST:

        form = RouteForm(request.POST, instance = route_edit)

        if form.is_valid():

            route=form.save(commit=False)

            route.name = route_original.name

            route.applier = request.user

            route.expires = route_original.expires

            route.status = "PENDING"

            route.save()

            form.save_m2m()

            route.commit_edit()

            mail_body = render_to_string("rule_edit_mail.txt",

                                             {"route": route})

            mail_admins("Rule %s edit request submitted by %s" %(route.name, route.applier.username),

                          mail_body, fail_silently=True)

            return HttpResponseRedirect(reverse("group-routes"))

        else:

            return render_to_response('apply.html', {'form': form, 'edit':True, 'applier': applier},

                                      context_instance=RequestContext(request))

    else:

        dictionary = model_to_dict(route_edit, fields=[], exclude=[])

        #form = RouteForm(instance=route_edit)

        form = RouteForm(dictionary)

        return render_to_response('apply.html', {'form': form, 'edit':True, 'applier': applier},

                                  context_instance=RequestContext(request))

@login_required

@never_cache

def delete_route(request, route_slug):

    if request.is_ajax():

        route = get_object_or_404(Route, name=route_slug)

        applier_peer = route.applier.get_profile().peer

        requester_peer = request.user.get_profile().peer

        if applier_peer == requester_peer:

            route.status = "PENDING"

            route.commit_delete()

            mail_body = render_to_string("rule_delete_mail.txt",

                                             {"route": route})

            mail_admins("Rule %s removal request submitted by %s" %(route.name, route.applier.username),

                          mail_body, fail_silently=True)

        html = "<html><body>Done</body></html>"

        return HttpResponse(html)

    else:

        return HttpResponseRedirect(reverse("group-routes"))

@login_required

@never_cache

def user_profile(request):

    user = request.user

    peer = request.user.get_profile().peer

    return render_to_response('profile.html', {'user': user, 'peer':peer},

                                  context_instance=RequestContext(request))

@never_cache

def user_login(request):

    try:

        error_username = None

        error_orgname = None

        error_affiliation = None

        error = ''

        username = request.META['HTTP_EPPN']

        if not username:

            error_username = True

        firstname = request.META['HTTP_SHIB_INETORGPERSON_GIVENNAME']

        lastname = request.META['HTTP_SHIB_PERSON_SURNAME']

        mail = request.META['HTTP_SHIB_INETORGPERSON_MAIL']

        organization = request.META['HTTP_SHIB_HOMEORGANIZATION']

        affiliation = request.META['HTTP_SHIB_EP_ENTITLEMENT']

        if settings.SHIB_AUTH_AFFILIATION in affiliation.split(";"):

            has_affiliation = True

        if not has_affiliation:

            error_affiliation = True

        if not organization:

            error_orgname = True

        if error_username:

            error = "Your idP should release the HTTP_EPPN attribute towards this service\n"

        if error_orgname:

            error = error + "Your idP should release the HTTP_SHIB_HOMEORGANIZATION attribute towards this service\n"

        if error_affiliation:

            error = error + "Your idP should release an appropriate HTTP_SHIB_EP_ENTITLEMENT attribute towards this service"

        if error_username or error_orgname or error_affiliation:

            return render_to_response('error.html', {'error': error,},

                                  context_instance=RequestContext(request))

        user = authenticate(username=username, firstname=firstname, lastname=lastname, mail=mail, organization=organization, affiliation=affiliation)

        if user is not None:

            login(request, user)

            update_user_attributes(user, firstname=firstname, lastname=lastname, mail=mail)

            return HttpResponseRedirect(reverse("group-routes"))

                # Redirect to a success page.

                # Return a 'disabled account' error message

        else:

            error = "Something went wrong during user authentication. Contact your administrator"

            return render_to_response('error.html', {'error': error,},

                                  context_instance=RequestContext(request))

    except Exception as e:

        error = "Invalid login procedure"

        return render_to_response('error.html', {'error': error,},

                                  context_instance=RequestContext(request))

        # Return an 'invalid login' error message.

#    return HttpResponseRedirect(reverse("user-routes"))

@login_required

@never_cache

def add_rate_limit(request):

    if request.method == "GET":

        form = ThenPlainForm()

        return render_to_response('add_rate_limit.html', {'form': form,},

                                  context_instance=RequestContext(request))

    else:

        form = ThenPlainForm(request.POST)

        if form.is_valid():

            then=form.save(commit=False)

            then.action_value = "%sk"%then.action_value

            then.save()

            response_data = {}

            response_data['pk'] = "%s" %then.pk

            response_data['value'] = "%s:%s" %(then.action, then.action_value)

            return HttpResponse(simplejson.dumps(response_data), mimetype='application/json')

        else:

            return render_to_response('add_rate_limit.html', {'form': form,},

                                      context_instance=RequestContext(request))

def update_user_attributes(user, firstname, lastname, mail):

    user.first_name = firstname

    user.last_name = lastname

    user.email = mail

    user.save()

@login_required

@never_cache

def add_port(request):

    if request.method == "GET":

        form = PortPlainForm()

        return render_to_response('add_port.html', {'form': form,},

                                  context_instance=RequestContext(request))

    else:

        form = PortPlainForm(request.POST)

        if form.is_valid():

            port=form.save()

            response_data = {}

            response_data['value'] = "%s" %port.pk

            response_data['text'] = "%s" %port.port

            return HttpResponse(simplejson.dumps(response_data), mimetype='application/json')

        else:

            return render_to_response('add_port.html', {'form': form,},

                                      context_instance=RequestContext(request))

@login_required

@never_cache

def user_logout(request):

    return HttpResponseRedirect(settings.SHIB_LOGOUT_URL)

@never_cache

def load_jscript(request, file):

    return render_to_response('%s.js' % file, context_instance=RequestContext(request), mimetype="text/javascript")