mirror of
https://github.com/netbox-community/netbox.git
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261 lines
9.0 KiB
Python
261 lines
9.0 KiB
Python
import base64
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from django.contrib import messages
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from django.contrib.auth.decorators import permission_required, login_required
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from django.contrib.auth.mixins import PermissionRequiredMixin
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from django.db.models import Count
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from django.shortcuts import get_object_or_404, redirect, render
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from django.urls import reverse
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from django.utils.decorators import method_decorator
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from django.views.generic import View
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from dcim.models import Device
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from utilities.views import (
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BulkDeleteView, BulkEditView, BulkImportView, ObjectDeleteView, ObjectEditView, ObjectListView,
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)
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from . import filters, forms, tables
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from .decorators import userkey_required
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from .models import SecretRole, Secret, SessionKey
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def get_session_key(request):
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"""
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Extract and decode the session key sent with a request. Returns None if no session key was provided.
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"""
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session_key = request.COOKIES.get('session_key', None)
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if session_key is not None:
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return base64.b64decode(session_key)
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return session_key
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#
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# Secret roles
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#
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class SecretRoleListView(ObjectListView):
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queryset = SecretRole.objects.annotate(secret_count=Count('secrets'))
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table = tables.SecretRoleTable
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template_name = 'secrets/secretrole_list.html'
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class SecretRoleCreateView(PermissionRequiredMixin, ObjectEditView):
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permission_required = 'secrets.add_secretrole'
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model = SecretRole
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model_form = forms.SecretRoleForm
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default_return_url = 'secrets:secretrole_list'
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class SecretRoleEditView(SecretRoleCreateView):
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permission_required = 'secrets.change_secretrole'
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class SecretRoleBulkImportView(PermissionRequiredMixin, BulkImportView):
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permission_required = 'secrets.add_secretrole'
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model_form = forms.SecretRoleCSVForm
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table = tables.SecretRoleTable
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default_return_url = 'secrets:secretrole_list'
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class SecretRoleBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
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permission_required = 'secrets.delete_secretrole'
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queryset = SecretRole.objects.annotate(secret_count=Count('secrets'))
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table = tables.SecretRoleTable
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default_return_url = 'secrets:secretrole_list'
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#
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# Secrets
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#
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@method_decorator(login_required, name='dispatch')
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class SecretListView(ObjectListView):
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queryset = Secret.objects.select_related('role', 'device')
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filter = filters.SecretFilter
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filter_form = forms.SecretFilterForm
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table = tables.SecretTable
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template_name = 'secrets/secret_list.html'
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@method_decorator(login_required, name='dispatch')
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class SecretView(View):
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def get(self, request, pk):
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secret = get_object_or_404(Secret, pk=pk)
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return render(request, 'secrets/secret.html', {
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'secret': secret,
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})
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@permission_required('secrets.add_secret')
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@userkey_required()
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def secret_add(request, pk):
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# Retrieve device
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device = get_object_or_404(Device, pk=pk)
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secret = Secret(device=device)
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session_key = get_session_key(request)
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if request.method == 'POST':
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form = forms.SecretForm(request.POST, instance=secret)
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if form.is_valid():
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# We need a valid session key in order to create a Secret
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if session_key is None:
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form.add_error(None, "No session key was provided with the request. Unable to encrypt secret data.")
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# Create and encrypt the new Secret
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else:
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master_key = None
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try:
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sk = SessionKey.objects.get(userkey__user=request.user)
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master_key = sk.get_master_key(session_key)
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except SessionKey.DoesNotExist:
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form.add_error(None, "No session key found for this user.")
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if master_key is not None:
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secret = form.save(commit=False)
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secret.plaintext = str(form.cleaned_data['plaintext'])
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secret.encrypt(master_key)
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secret.save()
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messages.success(request, "Added new secret: {}.".format(secret))
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if '_addanother' in request.POST:
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return redirect('dcim:device_addsecret', pk=device.pk)
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else:
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return redirect('secrets:secret', pk=secret.pk)
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else:
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form = forms.SecretForm(instance=secret)
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return render(request, 'secrets/secret_edit.html', {
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'secret': secret,
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'form': form,
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'return_url': device.get_absolute_url(),
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})
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@permission_required('secrets.change_secret')
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@userkey_required()
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def secret_edit(request, pk):
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secret = get_object_or_404(Secret, pk=pk)
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session_key = get_session_key(request)
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if request.method == 'POST':
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form = forms.SecretForm(request.POST, instance=secret)
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if form.is_valid():
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# Re-encrypt the Secret if a plaintext and session key have been provided.
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if form.cleaned_data['plaintext'] and session_key is not None:
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# Retrieve the master key using the provided session key
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master_key = None
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try:
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sk = SessionKey.objects.get(userkey__user=request.user)
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master_key = sk.get_master_key(session_key)
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except SessionKey.DoesNotExist:
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form.add_error(None, "No session key found for this user.")
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# Create and encrypt the new Secret
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if master_key is not None:
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secret = form.save(commit=False)
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secret.plaintext = form.cleaned_data['plaintext']
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secret.encrypt(master_key)
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secret.save()
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messages.success(request, "Modified secret {}.".format(secret))
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return redirect('secrets:secret', pk=secret.pk)
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else:
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form.add_error(None, "Invalid session key. Unable to encrypt secret data.")
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# We can't save the plaintext without a session key.
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elif form.cleaned_data['plaintext']:
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form.add_error(None, "No session key was provided with the request. Unable to encrypt secret data.")
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# If no new plaintext was specified, a session key is not needed.
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else:
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secret = form.save()
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messages.success(request, "Modified secret {}.".format(secret))
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return redirect('secrets:secret', pk=secret.pk)
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else:
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form = forms.SecretForm(instance=secret)
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return render(request, 'secrets/secret_edit.html', {
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'secret': secret,
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'form': form,
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'return_url': reverse('secrets:secret', kwargs={'pk': secret.pk}),
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})
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class SecretDeleteView(PermissionRequiredMixin, ObjectDeleteView):
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permission_required = 'secrets.delete_secret'
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model = Secret
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default_return_url = 'secrets:secret_list'
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class SecretBulkImportView(BulkImportView):
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permission_required = 'ipam.add_vlan'
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model_form = forms.SecretCSVForm
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table = tables.SecretTable
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template_name = 'secrets/secret_import.html'
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default_return_url = 'secrets:secret_list'
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widget_attrs = {'class': 'requires-session-key'}
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master_key = None
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def _save_obj(self, obj_form):
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"""
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Encrypt each object before saving it to the database.
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"""
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obj = obj_form.save(commit=False)
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obj.encrypt(self.master_key)
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obj.save()
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return obj
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def post(self, request):
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# Grab the session key from cookies.
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session_key = request.COOKIES.get('session_key')
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if session_key:
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# Attempt to derive the master key using the provided session key.
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try:
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sk = SessionKey.objects.get(userkey__user=request.user)
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self.master_key = sk.get_master_key(base64.b64decode(session_key))
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except SessionKey.DoesNotExist:
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messages.error(request, "No session key found for this user.")
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if self.master_key is not None:
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return super().post(request)
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else:
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messages.error(request, "Invalid private key! Unable to encrypt secret data.")
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else:
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messages.error(request, "No session key was provided with the request. Unable to encrypt secret data.")
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return render(request, self.template_name, {
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'form': self._import_form(request.POST),
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'fields': self.model_form().fields,
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'obj_type': self.model_form._meta.model._meta.verbose_name,
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'return_url': self.get_return_url(request),
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})
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class SecretBulkEditView(PermissionRequiredMixin, BulkEditView):
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permission_required = 'secrets.change_secret'
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queryset = Secret.objects.select_related('role', 'device')
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filter = filters.SecretFilter
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table = tables.SecretTable
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form = forms.SecretBulkEditForm
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default_return_url = 'secrets:secret_list'
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class SecretBulkDeleteView(PermissionRequiredMixin, BulkDeleteView):
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permission_required = 'secrets.delete_secret'
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queryset = Secret.objects.select_related('role', 'device')
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filter = filters.SecretFilter
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table = tables.SecretTable
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default_return_url = 'secrets:secret_list'
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