Merge pull request #3 from BUCOMPAdvancedDevelopment/firebaseAuth

Firebase auth

Author: nerdferby

.gcloudignore

@@ -16,4 +16,6 @@
 # Python pycache:
 __pycache__/
 # Ignored by the build system
-/setup.cfg
+/setup.cfg
+# Secrets
+/secrets

.gitignore

@@ -31,7 +31,7 @@ media
 .idea/**/dynamic.xml
 .idea/**/uiDesigner.xml
 .idea/**/dbnavigator.xml
-secrets/*
+secrets/
 
 # Gradle
 .idea/**/gradle.xml

AdvancedDevelopment/settings.py

@@ -9,8 +9,10 @@
 For the full list of settings and their values, see
 https://docs.djangoproject.com/en/3.2/ref/settings/
 """
-
+import os
 from pathlib import Path
+import firebase_admin
+from firebase_admin import credentials
 
 # Build paths inside the project like this: BASE_DIR / 'subdir'.
 BASE_DIR = Path(__file__).resolve().parent.parent
@@ -49,6 +51,12 @@
     'django.middleware.clickjacking.XFrameOptionsMiddleware',
 ]
 
+REST_FRAMEWORK = {
+    'DEFAULT_AUTHENTICATION_CLASSES': [
+        'FirebaseAuth.authentication.FirebaseAuthentication',
+    ]
+}
+
 ROOT_URLCONF = 'AdvancedDevelopment.urls'
 
 TEMPLATES = [
@@ -124,3 +132,6 @@
 # https://docs.djangoproject.com/en/3.2/ref/settings/#default-auto-field
 
 DEFAULT_AUTO_FIELD = 'django.db.models.BigAutoField'
+
+cred = credentials.Certificate(os.path.join(BASE_DIR, "secrets/advanced-development-333919-25398fb03356.json"))
+firebase_admin.initialize_app(cred)

FirebaseAuth/__init__.py

@@ -0,0 +1,3 @@
+from django.contrib import admin
+
+# Register your models here.

FirebaseAuth/admin.py

@@ -0,0 +1,6 @@
+from django.apps import AppConfig
+
+
+class FirebaseauthConfig(AppConfig):
+    default_auto_field = 'django.db.models.BigAutoField'
+    name = 'FirebaseAuth'

FirebaseAuth/apps.py

@@ -0,0 +1,30 @@
+from django.contrib.auth.models import User
+from django.core.exceptions import ObjectDoesNotExist
+from rest_framework import authentication
+from rest_framework import exceptions
+import firebase_admin as admin
+import firebase_admin.auth as auth
+
+
+class FirebaseAuthentication(authentication.BaseAuthentication):
+    """
+    https://jrizmal.medium.com/how-to-authenticate-firebase-users-in-django-rest-framework-c2d90f5a0a11
+    """
+    def authenticate(self, request):
+
+        token = request.headers.get('Authorization')
+        if not token:
+            return None
+
+        try:
+            decoded_token = auth.verify_id_token(token)
+            uid = decoded_token["uid"]
+        except:
+            return None
+
+        try:
+            user = User.objects.get(username=uid)
+            return user, None
+
+        except ObjectDoesNotExist:
+            return None

FirebaseAuth/authentication.py

@@ -0,0 +1,3 @@
+from django.db import models
+
+# Create your models here.

FirebaseAuth/migrations/__init__.py

@@ -0,0 +1,3 @@
+from django.test import TestCase
+
+# Create your tests here.

FirebaseAuth/models.py

@@ -0,0 +1,3 @@
+from django.shortcuts import render
+
+# Create your views here.