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Viewing / Editing File: _wsgi_common.py

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import json

from sentry_sdk.hub import Hub, _should_send_default_pii
from sentry_sdk.utils import AnnotatedValue
from sentry_sdk._compat import text_type, iteritems

from sentry_sdk._types import MYPY

if MYPY:
    import sentry_sdk

    from typing import Any
    from typing import Dict
    from typing import Optional
    from typing import Union


SENSITIVE_ENV_KEYS = (
    "REMOTE_ADDR",
    "HTTP_X_FORWARDED_FOR",
    "HTTP_SET_COOKIE",
    "HTTP_COOKIE",
    "HTTP_AUTHORIZATION",
    "HTTP_X_FORWARDED_FOR",
    "HTTP_X_REAL_IP",
)

SENSITIVE_HEADERS = tuple(
    x[len("HTTP_") :] for x in SENSITIVE_ENV_KEYS if x.startswith("HTTP_")
)


def request_body_within_bounds(client, content_length):
    # type: (Optional[sentry_sdk.Client], int) -> bool
    if client is None:
        return False

    bodies = client.options["request_bodies"]
    return not (
        bodies == "never"
        or (bodies == "small" and content_length > 10 ** 3)
        or (bodies == "medium" and content_length > 10 ** 4)
    )


class RequestExtractor(object):
    def __init__(self, request):
        # type: (Any) -> None
        self.request = request

    def extract_into_event(self, event):
        # type: (Dict[str, Any]) -> None
        client = Hub.current.client
        if client is None:
            return

        data = None  # type: Optional[Union[AnnotatedValue, Dict[str, Any]]]

        content_length = self.content_length()
        request_info = event.get("request", {})

        if _should_send_default_pii():
            request_info["cookies"] = dict(self.cookies())

        if not request_body_within_bounds(client, content_length):
            data = AnnotatedValue(
                "",
                {"rem": [["!config", "x", 0, content_length]], "len": content_length},
            )
        else:
            parsed_body = self.parsed_body()
            if parsed_body is not None:
                data = parsed_body
            elif self.raw_data():
                data = AnnotatedValue(
                    "",
                    {"rem": [["!raw", "x", 0, content_length]], "len": content_length},
                )
            else:
                data = None

        if data is not None:
            request_info["data"] = data

        event["request"] = request_info

    def content_length(self):
        # type: () -> int
        try:
            return int(self.env().get("CONTENT_LENGTH", 0))
        except ValueError:
            return 0

    def cookies(self):
        # type: () -> Dict[str, Any]
        raise NotImplementedError()

    def raw_data(self):
        # type: () -> Optional[Union[str, bytes]]
        raise NotImplementedError()

    def form(self):
        # type: () -> Optional[Dict[str, Any]]
        raise NotImplementedError()

    def parsed_body(self):
        # type: () -> Optional[Dict[str, Any]]
        form = self.form()
        files = self.files()
        if form or files:
            data = dict(iteritems(form))
            for k, v in iteritems(files):
                size = self.size_of_file(v)
                data[k] = AnnotatedValue(
                    "", {"len": size, "rem": [["!raw", "x", 0, size]]}
                )

            return data

        return self.json()

    def is_json(self):
        # type: () -> bool
        return _is_json_content_type(self.env().get("CONTENT_TYPE"))

    def json(self):
        # type: () -> Optional[Any]
        try:
            if not self.is_json():
                return None

            raw_data = self.raw_data()
            if raw_data is None:
                return None

            if isinstance(raw_data, text_type):
                return json.loads(raw_data)
            else:
                return json.loads(raw_data.decode("utf-8"))
        except ValueError:
            pass

        return None

    def files(self):
        # type: () -> Optional[Dict[str, Any]]
        raise NotImplementedError()

    def size_of_file(self, file):
        # type: (Any) -> int
        raise NotImplementedError()

    def env(self):
        # type: () -> Dict[str, Any]
        raise NotImplementedError()


def _is_json_content_type(ct):
    # type: (Optional[str]) -> bool
    mt = (ct or "").split(";", 1)[0]
    return (
        mt == "application/json"
        or (mt.startswith("application/"))
        and mt.endswith("+json")
    )


def _filter_headers(headers):
    # type: (Dict[str, str]) -> Dict[str, str]
    if _should_send_default_pii():
        return headers

    return {
        k: (
            v
            if k.upper().replace("-", "_") not in SENSITIVE_HEADERS
            else AnnotatedValue("", {"rem": [["!config", "x", 0, len(v)]]})
        )
        for k, v in iteritems(headers)
    }
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