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views.py
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views.py
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from django.http import HttpResponse
from django.http import JsonResponse
from django.contrib.auth.decorators import login_required
from django.views.decorators.csrf import csrf_exempt
from django.shortcuts import render, redirect
from django.contrib.auth.models import User
from .models import Item
import json
msg = "Hello authenticated user who's definitely logged in!"
@login_required
def indexPageView(request):
todos = Item.objects.filter(owner=request.user)
return render(request, 'pages/index.html', {'items': todos})
# Should be accessible only by logged in users, remove comment from line 20 to enable correct behavior
# @login_required
def userGreetingView(request):
owner=request.user
return render(request, 'pages/greeting.html', {'msg': msg, 'visitor': owner})
@csrf_exempt
def addTodo(request):
if request.method == 'POST':
note = request.POST.get('note')
currentUser = request.user
newNoteEntry = Item.objects.create(owner=currentUser, note=note)
newNoteEntry.save()
return redirect('/')
@login_required
def delete(request):
# The following codeblock is an simplified validity check, by uncommenting it
# you can make sure that only the "jvs" user can delete items even if they see the button
#if request.user.username != 'jvs':
# return redirect('/')
f = Item.objects.get(pk=request.POST.get('id'))
if request.user.id != f.owner.id:
return redirect('/')
f.delete()
return redirect('/')
# Showcase a SQL injection vulnerability
@login_required
def getItemsVulnerable(request):
owner_id = request.GET.get('owner', '')
query = "SELECT * FROM todo_item WHERE owner_id = '%s'" % owner_id
items = Item.objects.raw(query)
# You can fix the injection by using the safe way to process queries below,
# and commenting out the previous two lines
#items = Item.objects.filter(owner=owner_id)
itemsList = []
for item in items:
itemsList.append(item.note)
return JsonResponse(itemsList, safe=False)