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sentry_sdk
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scrubber.py
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from sentry_sdk.utils import ( capture_internal_exceptions, AnnotatedValue, iter_event_frames, ) from typing import TYPE_CHECKING if TYPE_CHECKING: from sentry_sdk._types import Event from typing import List from typing import Optional DEFAULT_DENYLIST = [ # stolen from relay "password", "passwd", "secret", "api_key", "apikey", "auth", "credentials", "mysql_pwd", "privatekey", "private_key", "token", "session", # django "csrftoken", "sessionid", # wsgi "x_csrftoken", "x_forwarded_for", "set_cookie", "cookie", "authorization", "x_api_key", # other common names used in the wild "aiohttp_session", # aiohttp "connect.sid", # Express "csrf_token", # Pyramid "csrf", # (this is a cookie name used in accepted answers on stack overflow) "_csrf", # Express "_csrf_token", # Bottle "PHPSESSID", # PHP "_session", # Sanic "symfony", # Symfony "user_session", # Vue "_xsrf", # Tornado "XSRF-TOKEN", # Angular, Laravel ] DEFAULT_PII_DENYLIST = [ "x_forwarded_for", "x_real_ip", "ip_address", "remote_addr", ] class EventScrubber: def __init__( self, denylist=None, recursive=False, send_default_pii=False, pii_denylist=None ): # type: (Optional[List[str]], bool, bool, Optional[List[str]]) -> None """ A scrubber that goes through the event payload and removes sensitive data configured through denylists. :param denylist: A security denylist that is always scrubbed, defaults to DEFAULT_DENYLIST. :param recursive: Whether to scrub the event payload recursively, default False. :param send_default_pii: Whether pii is sending is on, pii fields are not scrubbed. :param pii_denylist: The denylist to use for scrubbing when pii is not sent, defaults to DEFAULT_PII_DENYLIST. """ self.denylist = DEFAULT_DENYLIST.copy() if denylist is None else denylist if not send_default_pii: pii_denylist = ( DEFAULT_PII_DENYLIST.copy() if pii_denylist is None else pii_denylist ) self.denylist += pii_denylist self.denylist = [x.lower() for x in self.denylist] self.recursive = recursive def scrub_list(self, lst): # type: (object) -> None """ If a list is passed to this method, the method recursively searches the list and any nested lists for any dictionaries. The method calls scrub_dict on all dictionaries it finds. If the parameter passed to this method is not a list, the method does nothing. """ if not isinstance(lst, list): return for v in lst: self.scrub_dict(v) # no-op unless v is a dict self.scrub_list(v) # no-op unless v is a list def scrub_dict(self, d): # type: (object) -> None """ If a dictionary is passed to this method, the method scrubs the dictionary of any sensitive data. The method calls itself recursively on any nested dictionaries ( including dictionaries nested in lists) if self.recursive is True. This method does nothing if the parameter passed to it is not a dictionary. """ if not isinstance(d, dict): return for k, v in d.items(): # The cast is needed because mypy is not smart enough to figure out that k must be a # string after the isinstance check. if isinstance(k, str) and k.lower() in self.denylist: d[k] = AnnotatedValue.substituted_because_contains_sensitive_data() elif self.recursive: self.scrub_dict(v) # no-op unless v is a dict self.scrub_list(v) # no-op unless v is a list def scrub_request(self, event): # type: (Event) -> None with capture_internal_exceptions(): if "request" in event: if "headers" in event["request"]: self.scrub_dict(event["request"]["headers"]) if "cookies" in event["request"]: self.scrub_dict(event["request"]["cookies"]) if "data" in event["request"]: self.scrub_dict(event["request"]["data"]) def scrub_extra(self, event): # type: (Event) -> None with capture_internal_exceptions(): if "extra" in event: self.scrub_dict(event["extra"]) def scrub_user(self, event): # type: (Event) -> None with capture_internal_exceptions(): if "user" in event: self.scrub_dict(event["user"]) def scrub_breadcrumbs(self, event): # type: (Event) -> None with capture_internal_exceptions(): if "breadcrumbs" in event: if "values" in event["breadcrumbs"]: for value in event["breadcrumbs"]["values"]: if "data" in value: self.scrub_dict(value["data"]) def scrub_frames(self, event): # type: (Event) -> None with capture_internal_exceptions(): for frame in iter_event_frames(event): if "vars" in frame: self.scrub_dict(frame["vars"]) def scrub_spans(self, event): # type: (Event) -> None with capture_internal_exceptions(): if "spans" in event: for span in event["spans"]: if "data" in span: self.scrub_dict(span["data"]) def scrub_event(self, event): # type: (Event) -> None self.scrub_request(event) self.scrub_extra(event) self.scrub_user(event) self.scrub_breadcrumbs(event) self.scrub_frames(event) self.scrub_spans(event)