From 3df8617436f25581a06214f9ff12f08ea6bb2d5d Mon Sep 17 00:00:00 2001 From: Joe Kaufeld Date: Wed, 21 Aug 2024 21:07:44 -0400 Subject: [PATCH] :sparkles: add pydantic middleware --- example.py | 13 ++- example2.py | 1 - poetry.lock | 195 ++++++++++++++++++++++++++++++- pyproject.toml | 2 + spiderweb/constants.py | 2 +- spiderweb/example_validator.py | 8 ++ spiderweb/middleware/pydantic.py | 39 +++++++ spiderweb/request.py | 7 +- 8 files changed, 257 insertions(+), 10 deletions(-) create mode 100644 spiderweb/example_validator.py create mode 100644 spiderweb/middleware/pydantic.py diff --git a/example.py b/example.py index 25a4157..88052d6 100644 --- a/example.py +++ b/example.py @@ -1,6 +1,7 @@ from datetime import datetime, timedelta from spiderweb.decorators import csrf_exempt +from spiderweb.example_validator import CommentForm from spiderweb.main import SpiderwebRouter from spiderweb.exceptions import ServerError from spiderweb.response import ( @@ -17,6 +18,7 @@ app = SpiderwebRouter( "spiderweb.middleware.csrf.CSRFMiddleware", "example_middleware.TestMiddleware", "example_middleware.RedirectMiddleware", + "spiderweb.middleware.pydantic.PydanticMiddleware", "example_middleware.ExplodingMiddleware", ], staticfiles_dirs=["static_files"], @@ -63,24 +65,25 @@ def http405(request) -> HttpResponse: @csrf_exempt @app.route("/form", allowed_methods=["GET", "POST"]) -def form(request): +def form(request: CommentForm): if request.method == "POST": - return JsonResponse(data=request.POST) + return JsonResponse(data=request.validated_data.dict()) else: return TemplateResponse(request, "form.html") + @app.route("/cookies") def cookies(request): print("request.COOKIES: ", request.COOKIES) resp = HttpResponse(body="COOKIES! NOM NOM NOM") - resp.set_cookie(name='nom', value="everyonelovescookies") + resp.set_cookie(name="nom", value="everyonelovescookies") resp.set_cookie(name="nom2", value="seriouslycookies") resp.set_cookie( name="nom3", value="yumyum", partitioned=True, - expires=datetime.utcnow()+timedelta(seconds=10), - max_age=15 + expires=datetime.utcnow() + timedelta(seconds=10), + max_age=15, ) return resp diff --git a/example2.py b/example2.py index 1d0031c..fc733d1 100644 --- a/example2.py +++ b/example2.py @@ -1,4 +1,3 @@ -from spiderweb.decorators import csrf_exempt from spiderweb.main import SpiderwebRouter from spiderweb.exceptions import ServerError from spiderweb.response import ( diff --git a/poetry.lock b/poetry.lock index a8fdd73..b5ea28c 100644 --- a/poetry.lock +++ b/poetry.lock @@ -1,4 +1,15 @@ -# This file is automatically @generated by Poetry 1.8.3 and should not be changed by hand. +# This file is automatically @generated by Poetry 1.6.1 and should not be changed by hand. + +[[package]] +name = "annotated-types" +version = "0.7.0" +description = "Reusable constraint types to use with typing.Annotated" +optional = false +python-versions = ">=3.8" +files = [ + {file = "annotated_types-0.7.0-py3-none-any.whl", hash = "sha256:1f02e8b43a8fbbc3f3e0d4f0f4bfc8131bcb4eebe8849b8e5c773f3a1c582a53"}, + {file = "annotated_types-0.7.0.tar.gz", hash = "sha256:aff07c09a53a08bc8cfccb9c85b05f1aa9a2a6f23728d790723543408344ce89"}, +] [[package]] name = "black" @@ -197,6 +208,41 @@ ssh = ["bcrypt (>=3.1.5)"] test = ["certifi", "cryptography-vectors (==43.0.0)", "pretend", "pytest (>=6.2.0)", "pytest-benchmark", "pytest-cov", "pytest-xdist"] test-randomorder = ["pytest-randomly"] +[[package]] +name = "dnspython" +version = "2.6.1" +description = "DNS toolkit" +optional = false +python-versions = ">=3.8" +files = [ + {file = "dnspython-2.6.1-py3-none-any.whl", hash = "sha256:5ef3b9680161f6fa89daf8ad451b5f1a33b18ae8a1c6778cdf4b43f08c0a6e50"}, + {file = "dnspython-2.6.1.tar.gz", hash = "sha256:e8f0f9c23a7b7cb99ded64e6c3a6f3e701d78f50c55e002b839dea7225cff7cc"}, +] + +[package.extras] +dev = ["black (>=23.1.0)", "coverage (>=7.0)", "flake8 (>=7)", "mypy (>=1.8)", "pylint (>=3)", "pytest (>=7.4)", "pytest-cov (>=4.1.0)", "sphinx (>=7.2.0)", "twine (>=4.0.0)", "wheel (>=0.42.0)"] +dnssec = ["cryptography (>=41)"] +doh = ["h2 (>=4.1.0)", "httpcore (>=1.0.0)", "httpx (>=0.26.0)"] +doq = ["aioquic (>=0.9.25)"] +idna = ["idna (>=3.6)"] +trio = ["trio (>=0.23)"] +wmi = ["wmi (>=1.5.1)"] + +[[package]] +name = "email-validator" +version = "2.2.0" +description = "A robust email address syntax and deliverability validation library." +optional = false +python-versions = ">=3.8" +files = [ + {file = "email_validator-2.2.0-py3-none-any.whl", hash = "sha256:561977c2d73ce3611850a06fa56b414621e0c8faa9d66f2611407d87465da631"}, + {file = "email_validator-2.2.0.tar.gz", hash = "sha256:cb690f344c617a714f22e66ae771445a1ceb46821152df8e165c5f9a364582b7"}, +] + +[package.dependencies] 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false +python-versions = ">=3.8" +files = [ + {file = "typing_extensions-4.12.2-py3-none-any.whl", hash = "sha256:04e5ca0351e0f3f85c6853954072df659d0d13fac324d0072316b67d7794700d"}, + {file = "typing_extensions-4.12.2.tar.gz", hash = "sha256:1a7ead55c7e559dd4dee8856e3a88b41225abfe1ce8df57b7c13915fe121ffb8"}, +] + [metadata] lock-version = "2.0" python-versions = "^3.11" -content-hash = "e74f9bbb0dad671b46a8e80cbc5776de00b043b8e93ba102eab9be8b4aef2fac" +content-hash = "4fa8ab616be6891780300d4d66e9fb936aeac75bd3448e04073b2835acf9aadd" diff --git a/pyproject.toml b/pyproject.toml index 11a0fa8..2218e93 100644 --- a/pyproject.toml +++ b/pyproject.toml @@ -10,6 +10,8 @@ python = "^3.11" peewee = "^3.17.6" jinja2 = "^3.1.4" cryptography = "^43.0.0" +email-validator = "^2.2.0" +pydantic = "^2.8.2" [tool.poetry.group.dev.dependencies] ruff = "^0.5.5" diff --git a/spiderweb/constants.py b/spiderweb/constants.py index 1da1d0a..31050e3 100644 --- a/spiderweb/constants.py +++ b/spiderweb/constants.py @@ -3,4 +3,4 @@ DEFAULT_ENCODING = "ISO-8859-1" __version__ = "0.9.0" # https://developer.mozilla.org/en-US/docs/Web/HTTP/Headers/Set-Cookie -REGEX_COOKIE_NAME = r'^[a-zA-Z0-9\s\(\)<>@,;:\/\\\[\]\?=\{\}\"\t]*$' +REGEX_COOKIE_NAME = r"^[a-zA-Z0-9\s\(\)<>@,;:\/\\\[\]\?=\{\}\"\t]*$" diff --git a/spiderweb/example_validator.py b/spiderweb/example_validator.py new file mode 100644 index 0000000..c791cd7 --- /dev/null +++ b/spiderweb/example_validator.py @@ -0,0 +1,8 @@ +from pydantic import EmailStr + +from spiderweb.middleware.pydantic import SpiderwebModel + + +class CommentForm(SpiderwebModel): + email: EmailStr + comment: str diff --git a/spiderweb/middleware/pydantic.py b/spiderweb/middleware/pydantic.py new file mode 100644 index 0000000..c7be9f2 --- /dev/null +++ b/spiderweb/middleware/pydantic.py @@ -0,0 +1,39 @@ +from typing import get_type_hints + +from pydantic import BaseModel +from pydantic_core._pydantic_core import ValidationError +from spiderweb import SpiderwebMiddleware +from spiderweb.request import Request +from spiderweb.response import JsonResponse + + +class SpiderwebModel(BaseModel, Request): + # type hinting shenanigans that allow us to annotate Request objects + # with the pydantic models we want to validate them with, but doesn't + # break the Request object's ability to be used as a Request object + pass + + +class PydanticMiddleware(SpiderwebMiddleware): + def process_request(self, request): + if not request.method == "POST": + return + types = get_type_hints(request.handler) + if "request" not in types: + return + try: + data = types["request"].parse_obj(request.POST) + request.validated_data = data + except ValidationError as e: + return self.on_error(request, e) + + def on_error(self, request: Request, e: ValidationError): + # Separated out into its own method so that it can be overridden + errors = e.errors() + error_dict = {"message": "Validation error", "errors": []} + # [{'type': 'missing', 'loc': ('comment',), 'msg': 'Field required', 'input': {'email': 'a@a.com'}, 'url': 'https://errors.pydantic.dev/2.8/v/missing'}] + for error in errors: + field = error["loc"][0] + msg = error["msg"] + error_dict["errors"].append(f"{field}: {msg}") + return JsonResponse(status_code=400, data=error_dict) diff --git a/spiderweb/request.py b/spiderweb/request.py index 723d954..0ba7f95 100644 --- a/spiderweb/request.py +++ b/spiderweb/request.py @@ -27,6 +27,8 @@ class Request: self.POST = {} self.META = {} self.COOKIES = {} + # only used for the pydantic middleware and only on POST requests + self.validated_data = {} self.populate_headers() self.populate_meta() @@ -67,7 +69,10 @@ class Request: def populate_cookies(self) -> None: if cookies := self.environ.get("HTTP_COOKIE"): - self.COOKIES = {l.split("=")[0]: l.split("=")[1] for l in cookies.split("; ")} + self.COOKIES = { + option.split("=")[0]: option.split("=")[1] + for option in cookies.split("; ") + } def json(self): return json.loads(self.content)