funkwhale/api/funkwhale_api/moderation/management/commands/mrf_check.py

114 wiersze
3.6 KiB
Python

import json
import logging
import sys
import uuid
from django.core import validators
from django.core.management.base import BaseCommand, CommandError
from funkwhale_api.common import session
from funkwhale_api.federation import models
from funkwhale_api.moderation import mrf
def is_uuid(v):
try:
uuid.UUID(v)
except ValueError:
return False
return True
def is_url(v):
validator = validators.URLValidator()
try:
validator(v)
except (ValueError, validators.ValidationError):
return False
return True
class Command(BaseCommand):
help = "Check a given message against all or a specific MRF rule"
def add_arguments(self, parser):
parser.add_argument(
"type",
type=str,
choices=["inbox"],
help=("The type of MRF. Only inbox is supported at the moment"),
)
parser.add_argument(
"input",
nargs="?",
help=(
"The path to a file containing JSON data. Use - to read from stdin. "
"If no input is provided, registered MRF policies will be listed "
"instead.",
),
)
parser.add_argument(
"--policy",
"-p",
dest="policies",
nargs="+",
default=False,
help="Restrict to a list of MRF policies that will be applied, in that order",
)
def handle(self, *args, **options):
logger = logging.getLogger("funkwhale.mrf")
logger.setLevel(logging.DEBUG)
logger.addHandler(logging.StreamHandler(stream=sys.stderr))
input = options["input"]
if not input:
registry = getattr(mrf, options["type"])
self.stdout.write(
"No input given, listing registered policies for '{}' MRF:".format(
options["type"]
)
)
for name in registry.keys():
self.stdout.write(f"- {name}")
return
raw_content = None
content = None
if input == "-":
raw_content = sys.stdin.read()
elif is_uuid(input):
self.stderr.write("UUID provided, retrieving payload from db")
content = models.Activity.objects.get(uuid=input).payload
elif is_url(input):
response = session.get_session().get(
input,
headers={"Accept": "application/activity+json"},
)
response.raise_for_status()
content = response.json()
else:
with open(input, "rb") as f:
raw_content = f.read()
content = json.loads(raw_content) if content is None else content
policies = options["policies"] or []
registry = getattr(mrf, options["type"])
for policy in policies:
if policy not in registry:
raise CommandError(
"Unknown policy '{}' for MRF '{}'".format(policy, options["type"])
)
payload, updated = registry.apply(content, policies=policies)
if not payload:
self.stderr.write("Payload was discarded by MRF")
elif updated:
self.stderr.write("Payload was modified by MRF")
self.stderr.write("Initial payload:\n")
self.stdout.write(json.dumps(content, indent=2, sort_keys=True))
self.stderr.write("Modified payload:\n")
self.stdout.write(json.dumps(payload, indent=2, sort_keys=True))
else:
self.stderr.write("Payload left untouched by MRF")