222 lines
9.6 KiB
Python
222 lines
9.6 KiB
Python
from django.shortcuts import render
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from django.views.generic import View
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from django.contrib.auth import authenticate, login
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from django.contrib.auth.models import User
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from django.http import HttpResponse, HttpResponseRedirect
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from django.core.validators import email_re
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from django.urls import reverse_lazy
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# Check to see if the username is already taken
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# Helper function, not to be set up as a view
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def check_user_exists(username):
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if User.objects.filter(username=username).exists():
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return True
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# TODO: Needs to look up the LDAP
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else return False
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# The index page
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# If there's a session open, it will give the user the options he/she/it can do, if not,
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# it will show a landing page explaining what this is and prompt them to login
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class Index(View):
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# Basic binary choice, if it is an authenticated user, go straight to the options page,
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# if not, then show the landing page
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def get(self, request):
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if request.user:
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return render(request, 'useroptions.html')
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return render(request, 'landing.html')
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# Basically does the same as the GET request, just with trying to login the user beforehand
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# Shows an errorpage if authentication fails, since just looping to the landing page
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# would be frustrating
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def post(self, request):
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username = request.POST.get('username')
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password = request.POST.get('password')
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user = authenticate(request, username=username, password=password)
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if user is not None:
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login(request, user)
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return render(request, 'useroptions.html')
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return render(request, 'loginfailed.html')
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# Registering a user
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class Register(View):
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# Someone wants to register, throw up the page for that
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def get(self, request):
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return render(request, 'registeruser.html')
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# Someone filled out the register page, do some basic checks and throw it at nameko
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def post(self, request):
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# message for the error template
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service = 'Registering an user'
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# urlname for 'go back' on the errorpage
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urlname = 'register'
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# some basic check against DoS, since a hidden reference=ungleich will be given on the registeruser page
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# real defense against DoS will not be on django, but this protects a bit against filling up our ldap with a
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# basic curl script
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# TODO: Think about some better protection
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reference = request.POST.get('reference')
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if reference != 'ungleich':
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return HttpResponseRedirect(reverse_lazy('index'))
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username = request.POST.get('username')
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# Check to see if username is already taken
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if self.check_user_exists(username):
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return render(request, 'registererror.html', { 'urlname': urlname, 'service': service, 'error': 'User already exists.' } )
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# isalnum() may be a bit harsh, but is the most logical choice to make sure it's a username we
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# can use
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elif not username.isalnum():
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return render(request, 'registererror.html', { 'urlname': urlname, 'service': service, 'error': 'Username has to be alphanumeric.' } )
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password1 = request.POST.get('password1')
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password2 = request.POST.get('password2')
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# check if the supplied passwords match
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if password1 != password2:
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return render(request, 'registererror.html', { 'urlname': urlname, 'service': service,
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'error': 'Your passwords didn\'t match. Please supply the same password twice.' } )
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email = request.POST.get('email')
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# Is the emailaddress valid?
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if not email_re.match(email):
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return render(request, 'registererror.html', { 'urlname': urlname, 'service': service, 'error': 'The supplied email address is invalid.' } )
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firstname = request.POST.get('firstname')
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lastname = request.POST.get('lastname')
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if firstname == "" or not firstname or lastname == "" or not lastname
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return render(request, 'registererror.html', { 'urlname': urlname, 'service': service, 'error': 'Please enter your firstname and lastname.' } )
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# TODO: throw it to nameko to create the user
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return render(request, 'usercreated.html', { 'user': username } )
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# Change user data for logged in users
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class ChangeData(View):
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# provide the form for the change request
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def get(self, request):
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if not request.user.is_authenticated:
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return render(request, 'mustbeloggedin.html')
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user = request.user
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#TODO: nameko get basic data (firstname, lastname, email)
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(firstname, lastname, email) = self.get_data(user)
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# The template puts the old data as standard in the fields
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return render(request, 'changeuserdata.html', { 'user': user, 'firstname': firstname, 'lastname': lastname, 'email': email } )
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# get the change request
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def post(self, request):
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# variables for the error page
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service = 'changing user data'
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urlname = 'change_data'
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if not request.user.is_authenticated:
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return render(request, 'mustbeloggedin.html')
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user = request.user
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firstname = request.POST.get('firstname')
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lastname = request.POST.get('lastname')
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email = request.POST.get('email')
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# Some sanity checks for the supplied data
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if firstname == "":
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'Please enter a firstname.' } )
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elif lastname == "":
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'Please enter a lastname.' } )
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elif email == "":
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'Please enter an email.' } )
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elif not email_re.match(email):
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'The supplied email address is invalid.' } )
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#TODO: nameko change data (firstname, lastname, email)
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if self.change_data(firstname, lastname, email):
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return render(request, 'changeddata.html', { 'user': user, 'firstname': firstname, 'lastname': lastname, 'email': email } )
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'An unknown error occurred.' } )
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# TODO: call nameko to get basic data from user
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def get_data(self, user):
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return ("a", "b", "c")
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# TODO: call nameko to change user data and think about return value
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def change_data(self, firstname, lastname, email):
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return True
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# Resets the password for a user
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# Will need to send a confirmation email to the user and we will need a backend
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# to confirm the request came from someone who has access to the email
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# Out of scope except for creating the workflow
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class ResetPassword(View):
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# Presents the form with some information
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def get(self, request):
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return render(request, 'resetpassword.html')
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# gets the data from confirming the reset request and checks if it was not a misclick
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# (by having the user type in his username
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def post(self, request):
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user = request.POST.get('user')
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if check_user_exists(user):
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#TODO: call nameko for sending a reset request
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self.send_resetrequest(user)
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return render(request, 'send_resetrequest.html', { 'user': user } )
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return render(request, 'must_confirm_reset.html')
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def send_resetrequest(self, user):
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#TODO: call nameko to get the associated email and send a confirmation mail
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return True
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# The logged in user can change the password here
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class ChangePassword(View):
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# Presents the page for a logged in user
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def get(self, request):
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if not request.user.is_authenticated:
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return render(request, 'mustbeloggedin.html')
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return render(request, 'changepassword.html', { 'user': request.user } )
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# Does some checks on the supplied data and changes the password
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def post(self, request):
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# Variables for the error page
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urlname = 'change_password'
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service = 'change the password'
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if not request.user.is_authenticated:
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return render(request, 'mustbeloggedin.html')
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user = request.user
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oldpassword = request.POST.get('oldpassword')
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check = authenticate(request, username=user, password=oldpassword)
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# Is the right password for the user supplied?
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if check is None:
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'Wrong password for the user.' } )
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password1 = request.POST.get('password1')
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password2 = request.POST.get('password2')
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# Are both passwords from the form the same?
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if password1 != password2:
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return render(request, 'error.html', { 'urlname': urlname, 'service': service,
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'error': 'Please check if you typed the same password both times for the new password' } )
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# TODO: nameko change password
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if self.change_password(user, oldpassword, password1):
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return render(request, 'changedpassword.html', { 'user': user } )
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else:
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return render(request, 'error.html', { 'urlname': urlname, 'service': service, 'error': 'Unknown error while changing the password!' } )
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# Changes the password for the supplied user
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def change_password(self, user, oldpassword, password):
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#TODO: write nameko function to change a password
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return True
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class DeleteAccount(View):
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def get(self, request):
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return HttpResponse("Work in progress")
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