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82 lines
2.4 KiB
82 lines
2.4 KiB
import json
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import uuid
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from functools import wraps
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from django.contrib.auth.models import User
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from django.http import HttpResponseBadRequest, JsonResponse
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from six import string_types
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def uuid_or_400(f):
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@wraps(f)
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def wrapper(request, *args, **kwds):
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try:
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uuid.UUID(args[0])
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except ValueError:
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return HttpResponseBadRequest()
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return f(request, *args, **kwds)
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return wrapper
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def make_error(msg):
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return JsonResponse({"error": msg}, status=400)
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def check_api_key(f):
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@wraps(f)
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def wrapper(request, *args, **kwds):
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request.json = {}
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if request.body:
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try:
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request.json = json.loads(request.body.decode("utf-8"))
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except ValueError:
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return make_error("could not parse request body")
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if "HTTP_X_API_KEY" in request.META:
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api_key = request.META["HTTP_X_API_KEY"]
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else:
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api_key = request.json.get("api_key", "")
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if api_key == "":
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return make_error("wrong api_key")
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try:
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request.user = User.objects.get(profile__api_key=api_key)
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except User.DoesNotExist:
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return make_error("wrong api_key")
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return f(request, *args, **kwds)
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return wrapper
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def validate_json(schema):
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""" Validate request.json contents against `schema`.
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Supports a tiny subset of JSON schema spec.
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"""
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def decorator(f):
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@wraps(f)
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def wrapper(request, *args, **kwds):
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for key, spec in schema["properties"].items():
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if key not in request.json:
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continue
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value = request.json[key]
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if spec["type"] == "string":
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if not isinstance(value, string_types):
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return make_error("%s is not a string" % key)
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elif spec["type"] == "number":
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if not isinstance(value, int):
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return make_error("%s is not a number" % key)
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if "minimum" in spec and value < spec["minimum"]:
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return make_error("%s is too small" % key)
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if "maximum" in spec and value > spec["maximum"]:
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return make_error("%s is too large" % key)
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return f(request, *args, **kwds)
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return wrapper
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return decorator
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