Matrix login

conference/api.py

@@ -15,8 +15,10 @@
 from enum import Enum
 import json
 from functools import wraps
+from hashlib import md5
 from django.conf.urls import url as re_path
-from django.contrib.auth.hashers import check_password
+from django.contrib.auth.hashers import check_password as django_check_password
+from django.contrib.auth.hashers import is_password_usable
 from django.db.models import Q
 from django.http import JsonResponse
 from django.views.decorators.csrf import csrf_exempt
@@ -29,6 +31,7 @@
 )
 from pycon.settings import MATRIX_AUTH_API_DEBUG as DEBUG
 from pycon.settings import MATRIX_AUTH_API_ALLOWED_IPS as ALLOWED_IPS
+from pycon.settings import SECRET_KEY
 
 
 # Error Codes
@@ -113,6 +116,57 @@ def wrapper(request, *args, **kwargs):
     return wrapper
 
 
+def check_user_password(user, password):
+    # Two options: either our User has a valid password, in which case we do
+    # check it, or not, in which case we check it against the generated passwd.
+    if not is_password_usable(user.password):
+        return password == generate_matrix_password(user)
+    return django_check_password(password, user.password)
+
+
+def get_assigned_tickets(user, conference):
+    return Ticket.objects.filter(
+        Q(fare__conference=conference.code)
+        & Q(frozen=False)                   # i.e. the ticket was not cancelled
+        & Q(orderitem__order___complete=True)       # i.e. they paid
+        & Q(user=user)                              # i.e. assigned to user
+    )
+
+
+def is_speaker(user, conference):
+    # A speaker is a user with at least one accepted talk in the current
+    # conference.
+    try:
+        speaker = user.speaker
+    except Speaker.DoesNotExist:
+        return False
+    return TalkSpeaker.objects.filter(
+        speaker=speaker,
+        talk__conference=conference.code,
+        talk__status='accepted'
+    ).count() > 0
+
+
+def generate_matrix_password(user):
+    """
+    Create a temporary password for `user` to that they can login into our
+    matrix chat server using their email address and that password. This is
+    only needed for social auth users since they do not have a valid password
+    in our database.
+
+    The generated passowrd is not stored anywhere.
+    """
+    def n_base_b(n, b, nums='0123456789abcdefghijklmnopqrstuvwxyz'):
+        """Return `n` in base `b`."""
+
+        return ((n == 0) and nums[0]) or \
+            (n_base_b(n // b, b, nums).lstrip(nums[0]) + nums[n % b])
+
+    encoded = md5(str(user.email + SECRET_KEY).encode()).hexdigest()
+    n = int(encoded, 16)
+    return n_base_b(n, 36)
+
+
 @csrf_exempt
 @ensure_post
 @ensure_https_in_ops
@@ -171,44 +225,22 @@ def isauth(request):
         return _error(ApiError.AUTH_ERROR, 'unknown user')
 
     # Is the password OK?
-    if not check_password(data['password'], profile.user.password):
+    if not check_user_password(profile.user, data['password']):
         return _error(ApiError.AUTH_ERROR, 'authentication error')
 
-    # Get the tickets **assigned** to the user
     conference = Conference.objects.current()
-
-    tickets = Ticket.objects.filter(
-        Q(fare__conference=conference.code)
-        & Q(frozen=False)                   # i.e. the ticket was not cancelled
-        & Q(orderitem__order___complete=True)       # i.e. they paid
-        & Q(user=profile.user)                      # i.e. assigned to user
-    )
-
-    # A speaker is a user with at least one accepted talk in the current
-    # conference.
-    try:
-        speaker = profile.user.speaker
-    except Speaker.DoesNotExist:
-        is_speaker = False
-    else:
-        is_speaker = TalkSpeaker.objects.filter(
-            speaker=speaker,
-            talk__conference=conference.code,
-            talk__status='accepted'
-        ).count() > 0
-
     payload = {
         "username": profile.user.username,
         "first_name": profile.user.first_name,
         "last_name": profile.user.last_name,
         "email": profile.user.email,
         "is_staff": profile.user.is_staff,
-        "is_speaker": is_speaker,
+        "is_speaker": is_speaker(profile.user, conference),
         "is_active": profile.user.is_active,
         "is_minor": profile.is_minor,
         "tickets": [
             {"fare_name": t.fare.name, "fare_code": t.fare.code}
-            for t in tickets
+            for t in get_assigned_tickets(profile.user, conference)
         ]
     }
 

conference/user_panel.py

@@ -10,6 +10,7 @@
 from django.conf import settings
 from django.conf.urls import url as re_path
 from django.contrib import messages
+from  django.contrib.auth.hashers import is_password_usable
 from django.contrib.auth import views as auth_views
 from django.contrib.auth.decorators import login_required
 from django.contrib.auth.models import User
@@ -27,6 +28,7 @@
 from p3.utils import assign_ticket_to_user
 
 from .accounts import get_or_create_attendee_profile_for_new_user
+from .api import generate_matrix_password
 from .cfp import AddSpeakerToTalkForm
 from .models import (
     AttendeeProfile,
@@ -43,6 +45,18 @@
 from .decorators import full_profile_required
 
 
+def fare_valid_for_matrix_login(user, ticket):
+    """
+    Return whether or not `ticket` allows `user` to access our Matrix chat
+    server.
+
+    The conditions are:
+      1. `ticket` is *assigned* to `user` AND
+      2. `ticket.fare.code` is in (TRCC, TRCP, TRSC, TRSP, TRPC, TRPP)
+    """
+    return ticket.user == user and ticket.fare.code[2] in 'CSP'
+
+
 @login_required
 @full_profile_required
 def user_dashboard(request):
@@ -51,6 +65,14 @@ def user_dashboard(request):
     invoices = get_invoices_for_current_conference(request.user)
     tickets = get_tickets_for_current_conference(request.user)
 
+    matrix_username = None
+    matrix_password = None
+    if any(fare_valid_for_matrix_login(request.user, t) for t in tickets):
+        matrix_username = request.user.email
+        matrix_password = request.user.password \
+            if is_password_usable(request.user.password) \
+            else generate_matrix_password(request.user)
+
     return TemplateResponse(
         request,
         "conference/user_panel/dashboard.html",
@@ -63,6 +85,8 @@ def user_dashboard(request):
             "orders": orders,
             "invoices": invoices,
             "tickets": tickets,
+            "matrix_username": matrix_username,
+            "matrix_password": matrix_password,
         },
     )
 

templates/conference/schedule/schedule.html

@@ -228,11 +228,6 @@
 </div>
 {% endcomment %}
 
-<div class="alert alert-danger text-center">
-    For links to the sessions, please click on the track headers in Discord.
-    Those will then take you to the Zoom rooms and webinars.
-</div>
-
 <div class="alert alert-primary text-center">
     The scheduled times are displayed in your local timezone as configured
     in your browser (<span class="schedule-timezone-display">UTC</span>).

templates/conference/user_panel/dashboard.html

@@ -35,6 +35,36 @@ <h2 style='margin-top: 2em'>Proposals</h2>
             <a href="{% page_url 'submit-proposal' %}">If you'd like to do this, here's more information</a>
             {% endif %}
 
+        <h2 style='margin-top: 2em'>EuroPython Conference System</h2>
+            {% if not matrix_username and not matrix_password %}
+            Sorry, you need Sprint Only, a Conference a Combined ticket to access the 
+            EuroPython Matrix Chat server.
+            {% else %}
+            You can access the 
+            <a href="https://matrix.europython.eu/" target="matrix">EuroPython Conference System</a>
+            using these credentials:<br /><br />
+
+            <table class="table">
+              <tr>
+                <th>Email</th><th>Password</th>
+              </tr>
+              <tr>
+                <td>{{ matrix_username }}</td>
+                <td>
+                {% if matrix_password == user.password %}
+                The same password you use to login into this site
+                {% else %}
+                {{ matrix_password }}
+                {% endif %}
+                </td>
+              </tr>
+            </table>
+            <a class='btn btn-primary' href="https://matrix.europython.eu/" target="matrix">
+                Go to the EuroPython Conference System Now
+            </a>
+
+            {% endif %}
+
         <h2 style='margin-top: 2em'>Tickets</h2>
             {% if tickets %}
             {% include "conference/user_panel/_tickets.html" %}
@@ -43,7 +73,6 @@ <h2 style='margin-top: 2em'>Tickets</h2>
             <a href="{% page_url 'tickets' %}">Click here to see what tickets we have available right now.</a>
             {% endif %}
 
-
         <h2 style='margin-top: 2em'>Invoices</h2>
             {% if invoices %}
             {% include "conference/user_panel/_invoices.html" %}
@@ -56,4 +85,4 @@ <h2 style='margin-top: 2em'>Invoices</h2>
     <div class="col-md-4">
     </div>
 </div>
-{% endblock %}
+{% endblock %}