651 lines
24 KiB
Python
651 lines
24 KiB
Python
|
from __future__ import annotations
|
||
|
|
|
||
|
|
import collections.abc as cabc
|
||
|
|
import functools
|
||
|
|
import json
|
||
|
|
import typing as t
|
||
|
|
from io import BytesIO
|
||
|
|
|
||
|
|
from .._internal import _wsgi_decoding_dance
|
||
|
|
from ..datastructures import CombinedMultiDict
|
||
|
|
from ..datastructures import EnvironHeaders
|
||
|
|
from ..datastructures import FileStorage
|
||
|
|
from ..datastructures import ImmutableMultiDict
|
||
|
|
from ..datastructures import iter_multi_items
|
||
|
|
from ..datastructures import MultiDict
|
||
|
|
from ..exceptions import BadRequest
|
||
|
|
from ..exceptions import UnsupportedMediaType
|
||
|
|
from ..formparser import default_stream_factory
|
||
|
|
from ..formparser import FormDataParser
|
||
|
|
from ..sansio.request import Request as _SansIORequest
|
||
|
|
from ..utils import cached_property
|
||
|
|
from ..utils import environ_property
|
||
|
|
from ..wsgi import _get_server
|
||
|
|
from ..wsgi import get_input_stream
|
||
|
|
|
||
|
|
if t.TYPE_CHECKING:
|
||
|
|
from _typeshed.wsgi import WSGIApplication
|
||
|
|
from _typeshed.wsgi import WSGIEnvironment
|
||
|
|
|
||
|
|
|
||
|
|
class Request(_SansIORequest):
|
||
|
|
"""Represents an incoming WSGI HTTP request, with headers and body
|
||
|
|
taken from the WSGI environment. Has properties and methods for
|
||
|
|
using the functionality defined by various HTTP specs. The data in
|
||
|
|
requests object is read-only.
|
||
|
|
|
||
|
|
Text data is assumed to use UTF-8 encoding, which should be true for
|
||
|
|
the vast majority of modern clients. Using an encoding set by the
|
||
|
|
client is unsafe in Python due to extra encodings it provides, such
|
||
|
|
as ``zip``. To change the assumed encoding, subclass and replace
|
||
|
|
:attr:`charset`.
|
||
|
|
|
||
|
|
:param environ: The WSGI environ is generated by the WSGI server and
|
||
|
|
contains information about the server configuration and client
|
||
|
|
request.
|
||
|
|
:param populate_request: Add this request object to the WSGI environ
|
||
|
|
as ``environ['werkzeug.request']``. Can be useful when
|
||
|
|
debugging.
|
||
|
|
:param shallow: Makes reading from :attr:`stream` (and any method
|
||
|
|
that would read from it) raise a :exc:`RuntimeError`. Useful to
|
||
|
|
prevent consuming the form data in middleware, which would make
|
||
|
|
it unavailable to the final application.
|
||
|
|
|
||
|
|
.. versionchanged:: 3.0
|
||
|
|
The ``charset``, ``url_charset``, and ``encoding_errors`` parameters
|
||
|
|
were removed.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.1
|
||
|
|
Old ``BaseRequest`` and mixin classes were removed.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.1
|
||
|
|
Remove the ``disable_data_descriptor`` attribute.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.0
|
||
|
|
Combine ``BaseRequest`` and mixins into a single ``Request``
|
||
|
|
class.
|
||
|
|
|
||
|
|
.. versionchanged:: 0.5
|
||
|
|
Read-only mode is enforced with immutable classes for all data.
|
||
|
|
"""
|
||
|
|
|
||
|
|
#: the maximum content length. This is forwarded to the form data
|
||
|
|
#: parsing function (:func:`parse_form_data`). When set and the
|
||
|
|
#: :attr:`form` or :attr:`files` attribute is accessed and the
|
||
|
|
#: parsing fails because more than the specified value is transmitted
|
||
|
|
#: a :exc:`~werkzeug.exceptions.RequestEntityTooLarge` exception is raised.
|
||
|
|
#:
|
||
|
|
#: .. versionadded:: 0.5
|
||
|
|
max_content_length: int | None = None
|
||
|
|
|
||
|
|
#: the maximum form field size. This is forwarded to the form data
|
||
|
|
#: parsing function (:func:`parse_form_data`). When set and the
|
||
|
|
#: :attr:`form` or :attr:`files` attribute is accessed and the
|
||
|
|
#: data in memory for post data is longer than the specified value a
|
||
|
|
#: :exc:`~werkzeug.exceptions.RequestEntityTooLarge` exception is raised.
|
||
|
|
#:
|
||
|
|
#: .. versionchanged:: 3.1
|
||
|
|
#: Defaults to 500kB instead of unlimited.
|
||
|
|
#:
|
||
|
|
#: .. versionadded:: 0.5
|
||
|
|
max_form_memory_size: int | None = 500_000
|
||
|
|
|
||
|
|
#: The maximum number of multipart parts to parse, passed to
|
||
|
|
#: :attr:`form_data_parser_class`. Parsing form data with more than this
|
||
|
|
#: many parts will raise :exc:`~.RequestEntityTooLarge`.
|
||
|
|
#:
|
||
|
|
#: .. versionadded:: 2.2.3
|
||
|
|
max_form_parts = 1000
|
||
|
|
|
||
|
|
#: The form data parser that should be used. Can be replaced to customize
|
||
|
|
#: the form date parsing.
|
||
|
|
form_data_parser_class: type[FormDataParser] = FormDataParser
|
||
|
|
|
||
|
|
#: The WSGI environment containing HTTP headers and information from
|
||
|
|
#: the WSGI server.
|
||
|
|
environ: WSGIEnvironment
|
||
|
|
|
||
|
|
#: Set when creating the request object. If ``True``, reading from
|
||
|
|
#: the request body will cause a ``RuntimeException``. Useful to
|
||
|
|
#: prevent modifying the stream from middleware.
|
||
|
|
shallow: bool
|
||
|
|
|
||
|
|
def __init__(
|
||
|
|
self,
|
||
|
|
environ: WSGIEnvironment,
|
||
|
|
populate_request: bool = True,
|
||
|
|
shallow: bool = False,
|
||
|
|
) -> None:
|
||
|
|
super().__init__(
|
||
|
|
method=environ.get("REQUEST_METHOD", "GET"),
|
||
|
|
scheme=environ.get("wsgi.url_scheme", "http"),
|
||
|
|
server=_get_server(environ),
|
||
|
|
root_path=_wsgi_decoding_dance(environ.get("SCRIPT_NAME") or ""),
|
||
|
|
path=_wsgi_decoding_dance(environ.get("PATH_INFO") or ""),
|
||
|
|
query_string=environ.get("QUERY_STRING", "").encode("latin1"),
|
||
|
|
headers=EnvironHeaders(environ),
|
||
|
|
remote_addr=environ.get("REMOTE_ADDR"),
|
||
|
|
)
|
||
|
|
self.environ = environ
|
||
|
|
self.shallow = shallow
|
||
|
|
|
||
|
|
if populate_request and not shallow:
|
||
|
|
self.environ["werkzeug.request"] = self
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def from_values(cls, *args: t.Any, **kwargs: t.Any) -> Request:
|
||
|
|
"""Create a new request object based on the values provided. If
|
||
|
|
environ is given missing values are filled from there. This method is
|
||
|
|
useful for small scripts when you need to simulate a request from an URL.
|
||
|
|
Do not use this method for unittesting, there is a full featured client
|
||
|
|
object (:class:`Client`) that allows to create multipart requests,
|
||
|
|
support for cookies etc.
|
||
|
|
|
||
|
|
This accepts the same options as the
|
||
|
|
:class:`~werkzeug.test.EnvironBuilder`.
|
||
|
|
|
||
|
|
.. versionchanged:: 0.5
|
||
|
|
This method now accepts the same arguments as
|
||
|
|
:class:`~werkzeug.test.EnvironBuilder`. Because of this the
|
||
|
|
`environ` parameter is now called `environ_overrides`.
|
||
|
|
|
||
|
|
:return: request object
|
||
|
|
"""
|
||
|
|
from ..test import EnvironBuilder
|
||
|
|
|
||
|
|
builder = EnvironBuilder(*args, **kwargs)
|
||
|
|
try:
|
||
|
|
return builder.get_request(cls)
|
||
|
|
finally:
|
||
|
|
builder.close()
|
||
|
|
|
||
|
|
@classmethod
|
||
|
|
def application(cls, f: t.Callable[[Request], WSGIApplication]) -> WSGIApplication:
|
||
|
|
"""Decorate a function as responder that accepts the request as
|
||
|
|
the last argument. This works like the :func:`responder`
|
||
|
|
decorator but the function is passed the request object as the
|
||
|
|
last argument and the request object will be closed
|
||
|
|
automatically::
|
||
|
|
|
||
|
|
@Request.application
|
||
|
|
def my_wsgi_app(request):
|
||
|
|
return Response('Hello World!')
|
||
|
|
|
||
|
|
As of Werkzeug 0.14 HTTP exceptions are automatically caught and
|
||
|
|
converted to responses instead of failing.
|
||
|
|
|
||
|
|
:param f: the WSGI callable to decorate
|
||
|
|
:return: a new WSGI callable
|
||
|
|
"""
|
||
|
|
#: return a callable that wraps the -2nd argument with the request
|
||
|
|
#: and calls the function with all the arguments up to that one and
|
||
|
|
#: the request. The return value is then called with the latest
|
||
|
|
#: two arguments. This makes it possible to use this decorator for
|
||
|
|
#: both standalone WSGI functions as well as bound methods and
|
||
|
|
#: partially applied functions.
|
||
|
|
from ..exceptions import HTTPException
|
||
|
|
|
||
|
|
@functools.wraps(f)
|
||
|
|
def application(*args: t.Any) -> cabc.Iterable[bytes]:
|
||
|
|
request = cls(args[-2])
|
||
|
|
with request:
|
||
|
|
try:
|
||
|
|
resp = f(*args[:-2] + (request,))
|
||
|
|
except HTTPException as e:
|
||
|
|
resp = t.cast("WSGIApplication", e.get_response(args[-2]))
|
||
|
|
return resp(*args[-2:])
|
||
|
|
|
||
|
|
return t.cast("WSGIApplication", application)
|
||
|
|
|
||
|
|
def _get_file_stream(
|
||
|
|
self,
|
||
|
|
total_content_length: int | None,
|
||
|
|
content_type: str | None,
|
||
|
|
filename: str | None = None,
|
||
|
|
content_length: int | None = None,
|
||
|
|
) -> t.IO[bytes]:
|
||
|
|
"""Called to get a stream for the file upload.
|
||
|
|
|
||
|
|
This must provide a file-like class with `read()`, `readline()`
|
||
|
|
and `seek()` methods that is both writeable and readable.
|
||
|
|
|
||
|
|
The default implementation returns a temporary file if the total
|
||
|
|
content length is higher than 500KB. Because many browsers do not
|
||
|
|
provide a content length for the files only the total content
|
||
|
|
length matters.
|
||
|
|
|
||
|
|
:param total_content_length: the total content length of all the
|
||
|
|
data in the request combined. This value
|
||
|
|
is guaranteed to be there.
|
||
|
|
:param content_type: the mimetype of the uploaded file.
|
||
|
|
:param filename: the filename of the uploaded file. May be `None`.
|
||
|
|
:param content_length: the length of this file. This value is usually
|
||
|
|
not provided because webbrowsers do not provide
|
||
|
|
this value.
|
||
|
|
"""
|
||
|
|
return default_stream_factory(
|
||
|
|
total_content_length=total_content_length,
|
||
|
|
filename=filename,
|
||
|
|
content_type=content_type,
|
||
|
|
content_length=content_length,
|
||
|
|
)
|
||
|
|
|
||
|
|
@property
|
||
|
|
def want_form_data_parsed(self) -> bool:
|
||
|
|
"""``True`` if the request method carries content. By default
|
||
|
|
this is true if a ``Content-Type`` is sent.
|
||
|
|
|
||
|
|
.. versionadded:: 0.8
|
||
|
|
"""
|
||
|
|
return bool(self.environ.get("CONTENT_TYPE"))
|
||
|
|
|
||
|
|
def make_form_data_parser(self) -> FormDataParser:
|
||
|
|
"""Creates the form data parser. Instantiates the
|
||
|
|
:attr:`form_data_parser_class` with some parameters.
|
||
|
|
|
||
|
|
.. versionadded:: 0.8
|
||
|
|
"""
|
||
|
|
return self.form_data_parser_class(
|
||
|
|
stream_factory=self._get_file_stream,
|
||
|
|
max_form_memory_size=self.max_form_memory_size,
|
||
|
|
max_content_length=self.max_content_length,
|
||
|
|
max_form_parts=self.max_form_parts,
|
||
|
|
cls=self.parameter_storage_class,
|
||
|
|
)
|
||
|
|
|
||
|
|
def _load_form_data(self) -> None:
|
||
|
|
"""Method used internally to retrieve submitted data. After calling
|
||
|
|
this sets `form` and `files` on the request object to multi dicts
|
||
|
|
filled with the incoming form data. As a matter of fact the input
|
||
|
|
stream will be empty afterwards. You can also call this method to
|
||
|
|
force the parsing of the form data.
|
||
|
|
|
||
|
|
.. versionadded:: 0.8
|
||
|
|
"""
|
||
|
|
# abort early if we have already consumed the stream
|
||
|
|
if "form" in self.__dict__:
|
||
|
|
return
|
||
|
|
|
||
|
|
if self.want_form_data_parsed:
|
||
|
|
parser = self.make_form_data_parser()
|
||
|
|
data = parser.parse(
|
||
|
|
self._get_stream_for_parsing(),
|
||
|
|
self.mimetype,
|
||
|
|
self.content_length,
|
||
|
|
self.mimetype_params,
|
||
|
|
)
|
||
|
|
else:
|
||
|
|
data = (
|
||
|
|
self.stream,
|
||
|
|
self.parameter_storage_class(),
|
||
|
|
self.parameter_storage_class(),
|
||
|
|
)
|
||
|
|
|
||
|
|
# inject the values into the instance dict so that we bypass
|
||
|
|
# our cached_property non-data descriptor.
|
||
|
|
d = self.__dict__
|
||
|
|
d["stream"], d["form"], d["files"] = data
|
||
|
|
|
||
|
|
def _get_stream_for_parsing(self) -> t.IO[bytes]:
|
||
|
|
"""This is the same as accessing :attr:`stream` with the difference
|
||
|
|
that if it finds cached data from calling :meth:`get_data` first it
|
||
|
|
will create a new stream out of the cached data.
|
||
|
|
|
||
|
|
.. versionadded:: 0.9.3
|
||
|
|
"""
|
||
|
|
cached_data = getattr(self, "_cached_data", None)
|
||
|
|
if cached_data is not None:
|
||
|
|
return BytesIO(cached_data)
|
||
|
|
return self.stream
|
||
|
|
|
||
|
|
def close(self) -> None:
|
||
|
|
"""Closes associated resources of this request object. This
|
||
|
|
closes all file handles explicitly. You can also use the request
|
||
|
|
object in a with statement which will automatically close it.
|
||
|
|
|
||
|
|
.. versionadded:: 0.9
|
||
|
|
"""
|
||
|
|
files = self.__dict__.get("files")
|
||
|
|
for _key, value in iter_multi_items(files or ()):
|
||
|
|
value.close()
|
||
|
|
|
||
|
|
def __enter__(self) -> Request:
|
||
|
|
return self
|
||
|
|
|
||
|
|
def __exit__(self, exc_type, exc_value, tb) -> None: # type: ignore
|
||
|
|
self.close()
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def stream(self) -> t.IO[bytes]:
|
||
|
|
"""The WSGI input stream, with safety checks. This stream can only be consumed
|
||
|
|
once.
|
||
|
|
|
||
|
|
Use :meth:`get_data` to get the full data as bytes or text. The :attr:`data`
|
||
|
|
attribute will contain the full bytes only if they do not represent form data.
|
||
|
|
The :attr:`form` attribute will contain the parsed form data in that case.
|
||
|
|
|
||
|
|
Unlike :attr:`input_stream`, this stream guards against infinite streams or
|
||
|
|
reading past :attr:`content_length` or :attr:`max_content_length`.
|
||
|
|
|
||
|
|
If ``max_content_length`` is set, it can be enforced on streams if
|
||
|
|
``wsgi.input_terminated`` is set. Otherwise, an empty stream is returned.
|
||
|
|
|
||
|
|
If the limit is reached before the underlying stream is exhausted (such as a
|
||
|
|
file that is too large, or an infinite stream), the remaining contents of the
|
||
|
|
stream cannot be read safely. Depending on how the server handles this, clients
|
||
|
|
may show a "connection reset" failure instead of seeing the 413 response.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.3
|
||
|
|
Check ``max_content_length`` preemptively and while reading.
|
||
|
|
|
||
|
|
.. versionchanged:: 0.9
|
||
|
|
The stream is always set (but may be consumed) even if form parsing was
|
||
|
|
accessed first.
|
||
|
|
"""
|
||
|
|
if self.shallow:
|
||
|
|
raise RuntimeError(
|
||
|
|
"This request was created with 'shallow=True', reading"
|
||
|
|
" from the input stream is disabled."
|
||
|
|
)
|
||
|
|
|
||
|
|
return get_input_stream(
|
||
|
|
self.environ, max_content_length=self.max_content_length
|
||
|
|
)
|
||
|
|
|
||
|
|
input_stream = environ_property[t.IO[bytes]](
|
||
|
|
"wsgi.input",
|
||
|
|
doc="""The raw WSGI input stream, without any safety checks.
|
||
|
|
|
||
|
|
This is dangerous to use. It does not guard against infinite streams or reading
|
||
|
|
past :attr:`content_length` or :attr:`max_content_length`.
|
||
|
|
|
||
|
|
Use :attr:`stream` instead.
|
||
|
|
""",
|
||
|
|
)
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def data(self) -> bytes:
|
||
|
|
"""The raw data read from :attr:`stream`. Will be empty if the request
|
||
|
|
represents form data.
|
||
|
|
|
||
|
|
To get the raw data even if it represents form data, use :meth:`get_data`.
|
||
|
|
"""
|
||
|
|
return self.get_data(parse_form_data=True)
|
||
|
|
|
||
|
|
@t.overload
|
||
|
|
def get_data(
|
||
|
|
self,
|
||
|
|
cache: bool = True,
|
||
|
|
as_text: t.Literal[False] = False,
|
||
|
|
parse_form_data: bool = False,
|
||
|
|
) -> bytes: ...
|
||
|
|
|
||
|
|
@t.overload
|
||
|
|
def get_data(
|
||
|
|
self,
|
||
|
|
cache: bool = True,
|
||
|
|
as_text: t.Literal[True] = ...,
|
||
|
|
parse_form_data: bool = False,
|
||
|
|
) -> str: ...
|
||
|
|
|
||
|
|
def get_data(
|
||
|
|
self, cache: bool = True, as_text: bool = False, parse_form_data: bool = False
|
||
|
|
) -> bytes | str:
|
||
|
|
"""This reads the buffered incoming data from the client into one
|
||
|
|
bytes object. By default this is cached but that behavior can be
|
||
|
|
changed by setting `cache` to `False`.
|
||
|
|
|
||
|
|
Usually it's a bad idea to call this method without checking the
|
||
|
|
content length first as a client could send dozens of megabytes or more
|
||
|
|
to cause memory problems on the server.
|
||
|
|
|
||
|
|
Note that if the form data was already parsed this method will not
|
||
|
|
return anything as form data parsing does not cache the data like
|
||
|
|
this method does. To implicitly invoke form data parsing function
|
||
|
|
set `parse_form_data` to `True`. When this is done the return value
|
||
|
|
of this method will be an empty string if the form parser handles
|
||
|
|
the data. This generally is not necessary as if the whole data is
|
||
|
|
cached (which is the default) the form parser will used the cached
|
||
|
|
data to parse the form data. Please be generally aware of checking
|
||
|
|
the content length first in any case before calling this method
|
||
|
|
to avoid exhausting server memory.
|
||
|
|
|
||
|
|
If `as_text` is set to `True` the return value will be a decoded
|
||
|
|
string.
|
||
|
|
|
||
|
|
.. versionadded:: 0.9
|
||
|
|
"""
|
||
|
|
rv = getattr(self, "_cached_data", None)
|
||
|
|
if rv is None:
|
||
|
|
if parse_form_data:
|
||
|
|
self._load_form_data()
|
||
|
|
rv = self.stream.read()
|
||
|
|
if cache:
|
||
|
|
self._cached_data = rv
|
||
|
|
if as_text:
|
||
|
|
rv = rv.decode(errors="replace")
|
||
|
|
return rv
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def form(self) -> ImmutableMultiDict[str, str]:
|
||
|
|
"""The form parameters. By default an
|
||
|
|
:class:`~werkzeug.datastructures.ImmutableMultiDict`
|
||
|
|
is returned from this function. This can be changed by setting
|
||
|
|
:attr:`parameter_storage_class` to a different type. This might
|
||
|
|
be necessary if the order of the form data is important.
|
||
|
|
|
||
|
|
Please keep in mind that file uploads will not end up here, but instead
|
||
|
|
in the :attr:`files` attribute.
|
||
|
|
|
||
|
|
.. versionchanged:: 0.9
|
||
|
|
|
||
|
|
Previous to Werkzeug 0.9 this would only contain form data for POST
|
||
|
|
and PUT requests.
|
||
|
|
"""
|
||
|
|
self._load_form_data()
|
||
|
|
return self.form
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def values(self) -> CombinedMultiDict[str, str]:
|
||
|
|
"""A :class:`werkzeug.datastructures.CombinedMultiDict` that
|
||
|
|
combines :attr:`args` and :attr:`form`.
|
||
|
|
|
||
|
|
For GET requests, only ``args`` are present, not ``form``.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.0
|
||
|
|
For GET requests, only ``args`` are present, not ``form``.
|
||
|
|
"""
|
||
|
|
sources = [self.args]
|
||
|
|
|
||
|
|
if self.method != "GET":
|
||
|
|
# GET requests can have a body, and some caching proxies
|
||
|
|
# might not treat that differently than a normal GET
|
||
|
|
# request, allowing form data to "invisibly" affect the
|
||
|
|
# cache without indication in the query string / URL.
|
||
|
|
sources.append(self.form)
|
||
|
|
|
||
|
|
args = []
|
||
|
|
|
||
|
|
for d in sources:
|
||
|
|
if not isinstance(d, MultiDict):
|
||
|
|
d = MultiDict(d)
|
||
|
|
|
||
|
|
args.append(d)
|
||
|
|
|
||
|
|
return CombinedMultiDict(args)
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def files(self) -> ImmutableMultiDict[str, FileStorage]:
|
||
|
|
""":class:`~werkzeug.datastructures.MultiDict` object containing
|
||
|
|
all uploaded files. Each key in :attr:`files` is the name from the
|
||
|
|
``<input type="file" name="">``. Each value in :attr:`files` is a
|
||
|
|
Werkzeug :class:`~werkzeug.datastructures.FileStorage` object.
|
||
|
|
|
||
|
|
It basically behaves like a standard file object you know from Python,
|
||
|
|
with the difference that it also has a
|
||
|
|
:meth:`~werkzeug.datastructures.FileStorage.save` function that can
|
||
|
|
store the file on the filesystem.
|
||
|
|
|
||
|
|
Note that :attr:`files` will only contain data if the request method was
|
||
|
|
POST, PUT or PATCH and the ``<form>`` that posted to the request had
|
||
|
|
``enctype="multipart/form-data"``. It will be empty otherwise.
|
||
|
|
|
||
|
|
See the :class:`~werkzeug.datastructures.MultiDict` /
|
||
|
|
:class:`~werkzeug.datastructures.FileStorage` documentation for
|
||
|
|
more details about the used data structure.
|
||
|
|
"""
|
||
|
|
self._load_form_data()
|
||
|
|
return self.files
|
||
|
|
|
||
|
|
@property
|
||
|
|
def script_root(self) -> str:
|
||
|
|
"""Alias for :attr:`self.root_path`. ``environ["SCRIPT_ROOT"]``
|
||
|
|
without a trailing slash.
|
||
|
|
"""
|
||
|
|
return self.root_path
|
||
|
|
|
||
|
|
@cached_property
|
||
|
|
def url_root(self) -> str:
|
||
|
|
"""Alias for :attr:`root_url`. The URL with scheme, host, and
|
||
|
|
root path. For example, ``https://example.com/app/``.
|
||
|
|
"""
|
||
|
|
return self.root_url
|
||
|
|
|
||
|
|
remote_user = environ_property[str](
|
||
|
|
"REMOTE_USER",
|
||
|
|
doc="""If the server supports user authentication, and the
|
||
|
|
script is protected, this attribute contains the username the
|
||
|
|
user has authenticated as.""",
|
||
|
|
)
|
||
|
|
is_multithread = environ_property[bool](
|
||
|
|
"wsgi.multithread",
|
||
|
|
doc="""boolean that is `True` if the application is served by a
|
||
|
|
multithreaded WSGI server.""",
|
||
|
|
)
|
||
|
|
is_multiprocess = environ_property[bool](
|
||
|
|
"wsgi.multiprocess",
|
||
|
|
doc="""boolean that is `True` if the application is served by a
|
||
|
|
WSGI server that spawns multiple processes.""",
|
||
|
|
)
|
||
|
|
is_run_once = environ_property[bool](
|
||
|
|
"wsgi.run_once",
|
||
|
|
doc="""boolean that is `True` if the application will be
|
||
|
|
executed only once in a process lifetime. This is the case for
|
||
|
|
CGI for example, but it's not guaranteed that the execution only
|
||
|
|
happens one time.""",
|
||
|
|
)
|
||
|
|
|
||
|
|
# JSON
|
||
|
|
|
||
|
|
#: A module or other object that has ``dumps`` and ``loads``
|
||
|
|
#: functions that match the API of the built-in :mod:`json` module.
|
||
|
|
json_module = json
|
||
|
|
|
||
|
|
@property
|
||
|
|
def json(self) -> t.Any | None:
|
||
|
|
"""The parsed JSON data if :attr:`mimetype` indicates JSON
|
||
|
|
(:mimetype:`application/json`, see :attr:`is_json`).
|
||
|
|
|
||
|
|
Calls :meth:`get_json` with default arguments.
|
||
|
|
|
||
|
|
If the request content type is not ``application/json``, this
|
||
|
|
will raise a 415 Unsupported Media Type error.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.3
|
||
|
|
Raise a 415 error instead of 400.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.1
|
||
|
|
Raise a 400 error if the content type is incorrect.
|
||
|
|
"""
|
||
|
|
return self.get_json()
|
||
|
|
|
||
|
|
# Cached values for ``(silent=False, silent=True)``. Initialized
|
||
|
|
# with sentinel values.
|
||
|
|
_cached_json: tuple[t.Any, t.Any] = (Ellipsis, Ellipsis)
|
||
|
|
|
||
|
|
@t.overload
|
||
|
|
def get_json(
|
||
|
|
self, force: bool = ..., silent: t.Literal[False] = ..., cache: bool = ...
|
||
|
|
) -> t.Any: ...
|
||
|
|
|
||
|
|
@t.overload
|
||
|
|
def get_json(
|
||
|
|
self, force: bool = ..., silent: bool = ..., cache: bool = ...
|
||
|
|
) -> t.Any | None: ...
|
||
|
|
|
||
|
|
def get_json(
|
||
|
|
self, force: bool = False, silent: bool = False, cache: bool = True
|
||
|
|
) -> t.Any | None:
|
||
|
|
"""Parse :attr:`data` as JSON.
|
||
|
|
|
||
|
|
If the mimetype does not indicate JSON
|
||
|
|
(:mimetype:`application/json`, see :attr:`is_json`), or parsing
|
||
|
|
fails, :meth:`on_json_loading_failed` is called and
|
||
|
|
its return value is used as the return value. By default this
|
||
|
|
raises a 415 Unsupported Media Type resp.
|
||
|
|
|
||
|
|
:param force: Ignore the mimetype and always try to parse JSON.
|
||
|
|
:param silent: Silence mimetype and parsing errors, and
|
||
|
|
return ``None`` instead.
|
||
|
|
:param cache: Store the parsed JSON to return for subsequent
|
||
|
|
calls.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.3
|
||
|
|
Raise a 415 error instead of 400.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.1
|
||
|
|
Raise a 400 error if the content type is incorrect.
|
||
|
|
"""
|
||
|
|
if cache and self._cached_json[silent] is not Ellipsis:
|
||
|
|
return self._cached_json[silent]
|
||
|
|
|
||
|
|
if not (force or self.is_json):
|
||
|
|
if not silent:
|
||
|
|
return self.on_json_loading_failed(None)
|
||
|
|
else:
|
||
|
|
return None
|
||
|
|
|
||
|
|
data = self.get_data(cache=cache)
|
||
|
|
|
||
|
|
try:
|
||
|
|
rv = self.json_module.loads(data)
|
||
|
|
except ValueError as e:
|
||
|
|
if silent:
|
||
|
|
rv = None
|
||
|
|
|
||
|
|
if cache:
|
||
|
|
normal_rv, _ = self._cached_json
|
||
|
|
self._cached_json = (normal_rv, rv)
|
||
|
|
else:
|
||
|
|
rv = self.on_json_loading_failed(e)
|
||
|
|
|
||
|
|
if cache:
|
||
|
|
_, silent_rv = self._cached_json
|
||
|
|
self._cached_json = (rv, silent_rv)
|
||
|
|
else:
|
||
|
|
if cache:
|
||
|
|
self._cached_json = (rv, rv)
|
||
|
|
|
||
|
|
return rv
|
||
|
|
|
||
|
|
def on_json_loading_failed(self, e: ValueError | None) -> t.Any:
|
||
|
|
"""Called if :meth:`get_json` fails and isn't silenced.
|
||
|
|
|
||
|
|
If this method returns a value, it is used as the return value
|
||
|
|
for :meth:`get_json`. The default implementation raises
|
||
|
|
:exc:`~werkzeug.exceptions.BadRequest`.
|
||
|
|
|
||
|
|
:param e: If parsing failed, this is the exception. It will be
|
||
|
|
``None`` if the content type wasn't ``application/json``.
|
||
|
|
|
||
|
|
.. versionchanged:: 2.3
|
||
|
|
Raise a 415 error instead of 400.
|
||
|
|
"""
|
||
|
|
if e is not None:
|
||
|
|
raise BadRequest(f"Failed to decode JSON object: {e}")
|
||
|
|
|
||
|
|
raise UnsupportedMediaType(
|
||
|
|
"Did not attempt to load JSON data because the request"
|
||
|
|
" Content-Type was not 'application/json'."
|
||
|
|
)
|