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# -*- coding: utf-8 -*- 

# Copyright (C) 2018-2019 by the Free Software Foundation, Inc. 

# 

# This file is part of Postorius. 

# 

# Postorius 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 3 of the License, or (at your option) 

# any later version. 

# 

# Postorius 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 

# Postorius. If not, see <http://www.gnu.org/licenses/>. 

# 

 

from django.core.exceptions import MultipleObjectsReturned 

from django.db import IntegrityError 

from django.conf import settings 

from django.http import Http404, HttpResponseBadRequest, HttpResponse 

from django.shortcuts import redirect 

from django.urls import reverse_lazy 

from django.views.decorators.http import require_safe 

from django.views.generic import ( 

CreateView, UpdateView, ListView, DeleteView) 

 

from postorius.models import Domain, EmailTemplate, List 

from postorius.auth.mixins import DomainOwnerMixin, ListOwnerMixin 

 

 

class ListContextMixin: 

 

def get_context_data(self, *args, **kwargs): 

context = super().get_context_data(*args, **kwargs) 

context['list'] = List.objects.get_or_404( 

fqdn_listname=self.kwargs['list_id']) 

return context 

 

 

class ListTemplateIndexView(ListOwnerMixin, ListContextMixin, ListView): 

 

model = EmailTemplate 

template_name = 'postorius/lists/template_list.html' 

 

def get_queryset(self): 

return EmailTemplate.objects.filter( 

identifier=self.kwargs['list_id']) 

 

 

class ListTemplateCreateView(ListOwnerMixin, ListContextMixin, CreateView): 

 

template_name = 'postorius/lists/template_add.html' 

model = EmailTemplate 

fields = ['name', 'data'] 

 

def get_success_url(self): 

return reverse_lazy( 

'list_template_list', args=(self.kwargs['list_id'],)) 

 

def form_valid(self, form): 

formdata = form.cleaned_data 

formdata['identifier'] = self.kwargs['list_id'] 

formdata['context'] = 'list' 

email_template = EmailTemplate(**formdata) 

# Try to save the model. Some of the unique constraints that we have 

# depend on the mailing_list attribute added above. So, even though 

# we check for form validity, the save can fail. 

try: 

email_template.save() 

except IntegrityError as e: 

form.add_error('name', str(e)) 

form.add_error('name', 

'You already have this template set. ' 

'Use edit instead of creating a new one.') 

return self.form_invalid(form) 

return redirect(self.get_success_url()) 

 

 

class ListTemplateUpdateView(ListOwnerMixin, ListContextMixin, UpdateView): 

 

template_name = 'postorius/lists/template_update.html' 

model = EmailTemplate 

fields = ['data'] 

 

def get_success_url(self): 

return reverse_lazy( 

'list_template_list', args=(self.kwargs['list_id'],)) 

 

 

class ListTemplateDeleteView(ListOwnerMixin, ListContextMixin, DeleteView): 

 

template_name = 'postorius/lists/template_delete.html' 

model = EmailTemplate 

 

def get_success_url(self): 

return reverse_lazy( 

'list_template_list', args=(self.kwargs['list_id'],)) 

 

 

class DomainContextMixin: 

 

def get_context_data(self, *args, **kwargs): 

context = super().get_context_data(*args, **kwargs) 

context['domain'] = Domain.objects.get_or_404( 

mail_host=self.kwargs['domain']) 

return context 

 

 

class DomainTemplateIndexView(DomainOwnerMixin, DomainContextMixin, ListView): 

 

model = EmailTemplate 

template_name = 'postorius/domain/template_index.html' 

header = 'Index' 

 

def get_queryset(self): 

return EmailTemplate.objects.filter(identifier=self.kwargs['domain']) 

 

 

class DomainTemplateCreateView( 

DomainOwnerMixin, DomainContextMixin, CreateView): 

 

model = EmailTemplate 

template_name = 'postorius/domain/template_add.html' 

fields = ['name', 'data'] 

header = 'New Template' 

 

def get_success_url(self): 

return reverse_lazy('domain_template_list', 

args=(self.kwargs['domain'],)) 

 

def form_valid(self, form): 

formdata = form.cleaned_data 

formdata['identifier'] = self.kwargs['domain'] 

formdata['context'] = 'domain' 

template = EmailTemplate(**formdata) 

# Try to save the model. Some of the unique constraints that we have 

# depend on the mailing_list attribute added above. So, even though we 

# check for form validity, the save can fail. 

try: 

template.save() 

except IntegrityError as e: 

form.add_error('name', str(e)) 

form.add_error('name', 

'You already have this template set.' 

'Use edit instead of creating a new one.') 

return self.form_invalid(form) 

return redirect(self.get_success_url()) 

 

 

class DomainTemplateUpdateView( 

DomainOwnerMixin, DomainContextMixin, UpdateView): 

 

model = EmailTemplate 

template_name = 'postorius/domain/template_add.html' 

fields = ['data'] 

header = 'Edit Template' 

 

def get_success_url(self): 

return reverse_lazy('domain_template_list', 

args=(self.kwargs['domain'],)) 

 

 

class DomainTemplateDeleteView( 

DomainOwnerMixin, DomainContextMixin, DeleteView): 

 

template_name = 'postorius/domain/template_delete.html' 

model = EmailTemplate 

 

def get_success_url(self): 

return reverse_lazy('domain_template_list', 

args=(self.kwargs['domain'],)) 

 

 

@require_safe 

def get_template_data(request, context, identifier, name): 

# At this point, the request should be authenticated and it's method should 

# be GET. We just need to find the correct template and return it's 

# content, if it exists, return a 404 otherwise. 

if context not in ('list', 'domain'): 

return HttpResponseBadRequest( 

'context should be either "list" or "domain"') 

data = dict(name=name, identifier=identifier, context=context) 

# Depending on the context, populate the right identifier. 

try: 

template = EmailTemplate.objects.get(**data) 

except EmailTemplate.DoesNotExist: 

raise Http404('Template is not defined.') 

except MultipleObjectsReturned: 

raise HttpResponseBadRequest('Multiple Templates exist') 

 

content_type = 'text/plain' 

if settings.DEFAULT_CHARSET: 

content_type += '; charset=' + settings.DEFAULT_CHARSET 

return HttpResponse(template.data, 

content_type=content_type)