Files
WerkoutAPI/workout/views.py
Trey t c80c66c2e5 Codebase hardening: 102 fixes across 35+ files
Deep audit identified 106 findings; 102 fixed, 4 deferred. Covers 8 areas:

- Settings & deploy: env-gated DEBUG/SECRET_KEY, HTTPS headers, gunicorn, celery worker
- Auth (registered_user): password write_only, request.data fixes, transaction safety, proper HTTP status codes
- Workout app: IDOR protection, get_object_or_404, prefetch_related N+1 fixes, transaction.atomic
- Video/scripts: path traversal sanitization, HLS trigger guard, auth on cache wipe
- Models (exercise/equipment/muscle/superset): null-safe __str__, stable IDs, prefetch support
- Generator views: helper for registered_user lookup, logger.exception, bulk_update, transaction wrapping
- Generator core (rules/selector/generator): push-pull ratio, type affinity normalization, modality checks, side-pair exact match, word-boundary regex, equipment cache clearing
- Generator services (plan_builder/analyzer/normalizer): transaction.atomic, muscle cache, bulk_update, glutes classification fix

Co-Authored-By: Claude Opus 4.6 <noreply@anthropic.com>
2026-02-27 22:29:14 -06:00

216 lines
9.0 KiB
Python

from .models import *
from .serializers import *
from django.shortcuts import render
from rest_framework.decorators import api_view
from rest_framework.response import Response
from rest_framework import status
from django.contrib.auth.models import User
from django.contrib.auth import authenticate
from rest_framework.authentication import TokenAuthentication
from rest_framework.permissions import IsAuthenticated, IsAdminUser
from rest_framework.decorators import authentication_classes
from rest_framework.decorators import permission_classes
from django.shortcuts import get_object_or_404
from django.utils import timezone
from datetime import timedelta
from django.db import transaction
from django.core.cache import cache
from .tasks import add_from_files_tasks
@api_view(['GET'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def all_workouts(request):
# Fix #13: IDOR - filter workouts by the authenticated user
registered_user = get_object_or_404(RegisteredUser, user=request.user)
cache_name = 'all_workouts_user_' + str(registered_user.pk)
if cache_name in cache:
data = cache.get(cache_name)
return Response(data=data, status=status.HTTP_200_OK)
# Fix #16: N+1 - add prefetch_related for exercises, muscles, and equipment
workouts = Workout.objects.filter(
registered_user=registered_user
).prefetch_related(
'superset_set__supersetexercise_set__exercise',
'superset_set__supersetexercise_set__exercise__muscles',
'superset_set__supersetexercise_set__exercise__equipment_required_list',
)
serializer = WorkoutSerializer(workouts, many=True)
data = serializer.data
cache.set(cache_name, data, timeout=None)
return Response(data=data, status=status.HTTP_200_OK)
@api_view(['GET'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def workout_details(request, workout_id):
# Fix #14: IDOR - verify the workout belongs to the requesting user
registered_user = get_object_or_404(RegisteredUser, user=request.user)
# Include user in cache key to prevent IDOR via cached data
cache_name = "wk" + str(workout_id) + "_user_" + str(registered_user.pk)
if cache_name in cache:
data = cache.get(cache_name)
return Response(data=data, status=status.HTTP_200_OK)
# Fix #1: get_object_or_404 instead of Workout.objects.get
# Fix #14: also filter by registered_user for ownership check
# Fix #16: N+1 - add prefetch_related for exercises, muscles, and equipment
workout = get_object_or_404(
Workout.objects.prefetch_related(
'superset_set__supersetexercise_set__exercise',
'superset_set__supersetexercise_set__exercise__muscles',
'superset_set__supersetexercise_set__exercise__equipment_required_list',
),
pk=workout_id,
registered_user=registered_user
)
serializer = WorkoutDetailSerializer(workout, many=False)
data = serializer.data
cache.set(cache_name, data, timeout=300)
return Response(data = data, status=status.HTTP_200_OK)
@api_view(['POST'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def complete_workout(request):
# Fix #1: get_object_or_404
registered_user = get_object_or_404(RegisteredUser, user=request.user)
serializer = CompleteWorkoutSerializer(data=request.data, context = {"registered_user":registered_user.pk})
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
# Fix #2: validation errors return 400 not 500
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
@api_view(['GET'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def workouts_completed_by_logged_in_user(request):
# Fix #1: get_object_or_404
registered_user = get_object_or_404(RegisteredUser, user=request.user)
workouts = CompletedWorkout.objects.filter(registered_user=registered_user)
serializer = GetCompleteWorkoutSerializer(workouts, many=True)
# Fix #3: GET returns 200 not 201
return Response(serializer.data, status=status.HTTP_200_OK)
@api_view(['POST'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def add_workout(request):
# Fix #1: get_object_or_404
registered_user = get_object_or_404(RegisteredUser, user=request.user)
# exercise_data = dict(request.POST)["exercise_data"]
exercise_data = request.data["supersets"]
if exercise_data is None:
return Response({"supersets": [ "missing" ] }, status=status.HTTP_400_BAD_REQUEST)
if len(exercise_data) < 1:
return Response({"supersets": [ "empty" ] }, status=status.HTTP_400_BAD_REQUEST)
serializer = POSTCompleteWorkoutSerializer(data=request.data)
if serializer.is_valid():
# Fix #10: wrap creation logic in transaction.atomic()
with transaction.atomic():
workout = serializer.save(registered_user=registered_user)
# Fix #18: removed redundant save() right after create()
workout_total_time = 0
for superset in exercise_data:
name = superset["name"]
rounds = superset["rounds"]
exercises = superset["exercises"]
superset_order = superset["order"]
superset = Superset.objects.create(
workout=workout,
name=name,
rounds=rounds,
order=superset_order
)
# Fix #18: removed redundant save() right after create()
superset_total_time = 0
for exercise in exercises:
exercise_id = exercise["id"]
# Fix #1: get_object_or_404
exercise_obj = get_object_or_404(Exercise, pk=exercise_id)
order = exercise["order"]
supersetExercise = SupersetExercise.objects.create(
superset=superset,
exercise=exercise_obj,
order=order
)
if "weight" in exercise:
supersetExercise.weight = exercise["weight"]
if "reps" in exercise:
supersetExercise.reps = exercise["reps"]
# Fix #4: None multiplication risk
superset_total_time += exercise["reps"] * (exercise_obj.estimated_rep_duration or 3.0)
if "duration" in exercise:
supersetExercise.duration = exercise["duration"]
superset_total_time += exercise["duration"]
supersetExercise.save()
superset.estimated_time = superset_total_time
superset.save()
workout_total_time += (superset_total_time * rounds)
superset_order += 1
workout.estimated_time = workout_total_time
workout.save()
# Fix #19: invalidate per-user cache key (matches all_workouts view)
cache.delete('all_workouts_user_' + str(registered_user.pk))
return Response(serializer.data, status=status.HTTP_201_CREATED)
# Fix #2: validation errors return 400 not 500
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
@api_view(['GET'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def workouts_planned_by_logged_in_user(request):
# Fix #1: get_object_or_404
registered_user = get_object_or_404(RegisteredUser, user=request.user)
# Fix #12: timezone.now() instead of datetime.now()
workouts = PlannedWorkout.objects.filter(registered_user=registered_user, on_date__gte=timezone.now()- timedelta(days=1))
serializer = PlannedWorkoutSerializer(workouts, many=True)
return Response(serializer.data, status=status.HTTP_200_OK)
@api_view(['POST'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAuthenticated])
def plan_workout(request):
# Fix #1: get_object_or_404
registered_user = get_object_or_404(RegisteredUser, user=request.user)
serializer = POSTPlannedWorkoutSerializer(data=request.data,
context = {"registered_user":registered_user.pk})
if serializer.is_valid():
serializer.save()
return Response(serializer.data, status=status.HTTP_201_CREATED)
# Fix #2: validation errors return 400 not 500
return Response(serializer.errors, status=status.HTTP_400_BAD_REQUEST)
# Fix #15: This GET endpoint triggers data mutation (importing from files).
# Changed to POST. This should be admin-only.
@api_view(['POST'])
@authentication_classes([TokenAuthentication])
@permission_classes([IsAdminUser])
def add_from_files(request):
add_from_files_tasks.delay()
# Cache invalidation is handled in the task after import completes
return Response(status=status.HTTP_200_OK)