"""Actions related to the AP inbox/outbox."""
import uuid
from collections import defaultdict
from dataclasses import dataclass
from datetime import timedelta
from urllib.parse import urlparse
import fastapi
import httpx
from loguru import logger
from sqlalchemy import delete
from sqlalchemy import func
from sqlalchemy import select
from sqlalchemy import update
from sqlalchemy.exc import IntegrityError
from sqlalchemy.orm import joinedload
from app import activitypub as ap
from app import config
from app import ldsig
from app import models
from app.actor import LOCAL_ACTOR
from app.actor import Actor
from app.actor import RemoteActor
from app.actor import fetch_actor
from app.actor import save_actor
from app.ap_object import RemoteObject
from app.config import BASE_URL
from app.config import BLOCKED_SERVERS
from app.config import ID
from app.config import MANUALLY_APPROVES_FOLLOWERS
from app.database import AsyncSession
from app.outgoing_activities import new_outgoing_activity
from app.source import markdownify
from app.uploads import upload_to_attachment
from app.utils import opengraph
from app.utils import webmentions
from app.utils.datetime import as_utc
from app.utils.datetime import now
from app.utils.datetime import parse_isoformat
AnyboxObject = models.InboxObject | models.OutboxObject
def allocate_outbox_id() -> str:
return uuid.uuid4().hex
def outbox_object_id(outbox_id) -> str:
return f"{BASE_URL}/o/{outbox_id}"
async def save_outbox_object(
db_session: AsyncSession,
public_id: str,
raw_object: ap.RawObject,
relates_to_inbox_object_id: int | None = None,
relates_to_outbox_object_id: int | None = None,
relates_to_actor_id: int | None = None,
source: str | None = None,
is_transient: bool = False,
conversation: str | None = None,
) -> models.OutboxObject:
ro = await RemoteObject.from_raw_object(raw_object)
outbox_object = models.OutboxObject(
public_id=public_id,
ap_type=ro.ap_type,
ap_id=ro.ap_id,
ap_context=ro.ap_context,
ap_object=ro.ap_object,
visibility=ro.visibility,
og_meta=await opengraph.og_meta_from_note(db_session, ro),
relates_to_inbox_object_id=relates_to_inbox_object_id,
relates_to_outbox_object_id=relates_to_outbox_object_id,
relates_to_actor_id=relates_to_actor_id,
activity_object_ap_id=ro.activity_object_ap_id,
is_hidden_from_homepage=True if ro.in_reply_to else False,
source=source,
is_transient=is_transient,
conversation=conversation,
)
db_session.add(outbox_object)
await db_session.flush()
await db_session.refresh(outbox_object)
return outbox_object
async def send_delete(db_session: AsyncSession, ap_object_id: str) -> None:
outbox_object_to_delete = await get_outbox_object_by_ap_id(db_session, ap_object_id)
if not outbox_object_to_delete:
raise ValueError(f"{ap_object_id} not found in the outbox")
delete_id = allocate_outbox_id()
delete = {
"@context": ap.AS_EXTENDED_CTX,
"id": outbox_object_id(delete_id),
"type": "Delete",
"actor": ID,
"object": {
"type": "Tombstone",
"id": ap_object_id,
},
}
outbox_object = await save_outbox_object(
db_session,
delete_id,
delete,
relates_to_outbox_object_id=outbox_object_to_delete.id,
)
if not outbox_object.id:
raise ValueError("Should never happen")
outbox_object_to_delete.is_deleted = True
await db_session.commit()
# Compute the original recipients
recipients = await _compute_recipients(
db_session, outbox_object_to_delete.ap_object
)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
await db_session.commit()
async def send_like(db_session: AsyncSession, ap_object_id: str) -> None:
inbox_object = await get_inbox_object_by_ap_id(db_session, ap_object_id)
if not inbox_object:
logger.info(f"Saving unknwown object {ap_object_id}")
raw_object = await ap.fetch(ap.get_id(ap_object_id))
await save_object_to_inbox(db_session, raw_object)
await db_session.commit()
# XXX: we need to reload it as lazy-loading the actor will fail
# (asyncio SQLAlchemy issue)
inbox_object = await get_inbox_object_by_ap_id(db_session, ap_object_id)
if not inbox_object:
raise ValueError("Should never happen")
like_id = allocate_outbox_id()
like = {
"@context": ap.AS_CTX,
"id": outbox_object_id(like_id),
"type": "Like",
"actor": ID,
"object": ap_object_id,
}
outbox_object = await save_outbox_object(
db_session, like_id, like, relates_to_inbox_object_id=inbox_object.id
)
if not outbox_object.id:
raise ValueError("Should never happen")
inbox_object.liked_via_outbox_object_ap_id = outbox_object.ap_id
await new_outgoing_activity(
db_session, inbox_object.actor.inbox_url, outbox_object.id
)
await db_session.commit()
async def send_announce(db_session: AsyncSession, ap_object_id: str) -> None:
inbox_object = await get_inbox_object_by_ap_id(db_session, ap_object_id)
if not inbox_object:
logger.info(f"Saving unknwown object {ap_object_id}")
raw_object = await ap.fetch(ap.get_id(ap_object_id))
await save_object_to_inbox(db_session, raw_object)
await db_session.commit()
# XXX: we need to reload it as lazy-loading the actor will fail
# (asyncio SQLAlchemy issue)
inbox_object = await get_inbox_object_by_ap_id(db_session, ap_object_id)
if not inbox_object:
raise ValueError("Should never happen")
if inbox_object.visibility not in [
ap.VisibilityEnum.PUBLIC,
ap.VisibilityEnum.UNLISTED,
]:
raise ValueError("Cannot announce non-public object")
announce_id = allocate_outbox_id()
announce = {
"@context": ap.AS_CTX,
"id": outbox_object_id(announce_id),
"type": "Announce",
"actor": ID,
"object": ap_object_id,
"to": [ap.AS_PUBLIC],
"cc": [
f"{BASE_URL}/followers",
inbox_object.ap_actor_id,
],
}
outbox_object = await save_outbox_object(
db_session, announce_id, announce, relates_to_inbox_object_id=inbox_object.id
)
if not outbox_object.id:
raise ValueError("Should never happen")
inbox_object.announced_via_outbox_object_ap_id = outbox_object.ap_id
recipients = await _compute_recipients(db_session, announce)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
await db_session.commit()
async def send_follow(db_session: AsyncSession, ap_actor_id: str) -> None:
await _send_follow(db_session, ap_actor_id)
await db_session.commit()
async def _send_follow(db_session: AsyncSession, ap_actor_id: str) -> None:
actor = await fetch_actor(db_session, ap_actor_id)
follow_id = allocate_outbox_id()
follow = {
"@context": ap.AS_CTX,
"id": outbox_object_id(follow_id),
"type": "Follow",
"actor": ID,
"object": ap_actor_id,
}
outbox_object = await save_outbox_object(
db_session, follow_id, follow, relates_to_actor_id=actor.id
)
if not outbox_object.id:
raise ValueError("Should never happen")
await new_outgoing_activity(db_session, actor.inbox_url, outbox_object.id)
# Caller should commit
async def send_undo(db_session: AsyncSession, ap_object_id: str) -> None:
await _send_undo(db_session, ap_object_id)
await db_session.commit()
async def _send_undo(db_session: AsyncSession, ap_object_id: str) -> None:
outbox_object_to_undo = await get_outbox_object_by_ap_id(db_session, ap_object_id)
if not outbox_object_to_undo:
raise ValueError(f"{ap_object_id} not found in the outbox")
if outbox_object_to_undo.ap_type not in ["Follow", "Like", "Announce"]:
raise ValueError(
f"Cannot build Undo for {outbox_object_to_undo.ap_type} activity"
)
undo_id = allocate_outbox_id()
undo = {
"@context": ap.AS_CTX,
"id": outbox_object_id(undo_id),
"type": "Undo",
"actor": ID,
"object": ap.remove_context(outbox_object_to_undo.ap_object),
}
outbox_object = await save_outbox_object(
db_session,
undo_id,
undo,
relates_to_outbox_object_id=outbox_object_to_undo.id,
)
if not outbox_object.id:
raise ValueError("Should never happen")
outbox_object_to_undo.undone_by_outbox_object_id = outbox_object.id
if outbox_object_to_undo.ap_type == "Follow":
if not outbox_object_to_undo.activity_object_ap_id:
raise ValueError("Should never happen")
followed_actor = await fetch_actor(
db_session, outbox_object_to_undo.activity_object_ap_id
)
await new_outgoing_activity(
db_session,
followed_actor.inbox_url,
outbox_object.id,
)
# Also remove the follow from the following collection
await db_session.execute(
delete(models.Following).where(
models.Following.ap_actor_id == followed_actor.ap_id
)
)
elif outbox_object_to_undo.ap_type == "Like":
liked_object_ap_id = outbox_object_to_undo.activity_object_ap_id
if not liked_object_ap_id:
raise ValueError("Should never happen")
liked_object = await get_inbox_object_by_ap_id(db_session, liked_object_ap_id)
if not liked_object:
raise ValueError(f"Cannot find liked object {liked_object_ap_id}")
liked_object.liked_via_outbox_object_ap_id = None
# Send the Undo to the liked object's actor
await new_outgoing_activity(
db_session,
liked_object.actor.inbox_url, # type: ignore
outbox_object.id,
)
elif outbox_object_to_undo.ap_type == "Announce":
announced_object_ap_id = outbox_object_to_undo.activity_object_ap_id
if not announced_object_ap_id:
raise ValueError("Should never happen")
announced_object = await get_inbox_object_by_ap_id(
db_session, announced_object_ap_id
)
if not announced_object:
raise ValueError(f"Cannot find announced object {announced_object_ap_id}")
announced_object.announced_via_outbox_object_ap_id = None
# Send the Undo to the original recipients
recipients = await _compute_recipients(db_session, outbox_object.ap_object)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
else:
raise ValueError("Should never happen")
# called should commit
async def fetch_conversation_root(
db_session: AsyncSession,
obj: AnyboxObject | RemoteObject,
is_root: bool = False,
) -> str:
"""Some softwares do not set the context/conversation field (like Misskey).
This means we have to track conversation ourselves. To do set, we fetch
the root of the conversation and either:
- use the context field if set
- or build a custom conversation ID
"""
if not obj.in_reply_to or is_root:
if obj.ap_context:
return obj.ap_context
else:
# Use the root AP ID if there'no context
return f"microblogpub:root:{obj.ap_id}"
else:
in_reply_to_object: AnyboxObject | RemoteObject | None = (
await get_anybox_object_by_ap_id(db_session, obj.in_reply_to)
)
if not in_reply_to_object:
try:
raw_reply = await ap.fetch(ap.get_id(obj.in_reply_to))
raw_reply_actor = await fetch_actor(
db_session, ap.get_actor_id(raw_reply)
)
in_reply_to_object = RemoteObject(raw_reply, actor=raw_reply_actor)
except (ap.ObjectNotFoundError, ap.ObjectIsGoneError):
return await fetch_conversation_root(db_session, obj, is_root=True)
except httpx.HTTPStatusError as http_status_error:
if 400 <= http_status_error.response.status_code < 500:
# We may not have access, in this case consider if root
return await fetch_conversation_root(db_session, obj, is_root=True)
else:
raise
return await fetch_conversation_root(db_session, in_reply_to_object)
async def send_create(
db_session: AsyncSession,
ap_type: str,
source: str,
uploads: list[tuple[models.Upload, str, str | None]],
in_reply_to: str | None,
visibility: ap.VisibilityEnum,
content_warning: str | None = None,
is_sensitive: bool = False,
poll_type: str | None = None,
poll_answers: list[str] | None = None,
poll_duration_in_minutes: int | None = None,
name: str | None = None,
) -> str:
note_id = allocate_outbox_id()
published = now().replace(microsecond=0).isoformat().replace("+00:00", "Z")
context = f"{ID}/contexts/" + uuid.uuid4().hex
conversation = context
content, tags, mentioned_actors = await markdownify(db_session, source)
attachments = []
if in_reply_to:
in_reply_to_object = await get_anybox_object_by_ap_id(db_session, in_reply_to)
if not in_reply_to_object:
raise ValueError(f"Invalid in reply to {in_reply_to=}")
if not in_reply_to_object.ap_context:
logger.warning(f"Replied object {in_reply_to} has no context")
try:
conversation = await fetch_conversation_root(
db_session,
in_reply_to_object,
)
except Exception:
logger.exception(f"Failed to fetch convo root {in_reply_to}")
else:
context = in_reply_to_object.ap_context
conversation = in_reply_to_object.ap_context
if in_reply_to_object.is_from_outbox:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.ap_id == in_reply_to,
)
.values(replies_count=models.OutboxObject.replies_count + 1)
)
elif in_reply_to_object.is_from_inbox:
await db_session.execute(
update(models.InboxObject)
.where(
models.InboxObject.ap_id == in_reply_to,
)
.values(replies_count=models.InboxObject.replies_count + 1)
)
for (upload, filename, alt_text) in uploads:
attachments.append(upload_to_attachment(upload, filename, alt_text))
to = []
cc = []
mentioned_actor_ap_ids = [actor.ap_id for actor in mentioned_actors]
if visibility == ap.VisibilityEnum.PUBLIC:
to = [ap.AS_PUBLIC]
cc = [f"{BASE_URL}/followers"] + mentioned_actor_ap_ids
elif visibility == ap.VisibilityEnum.UNLISTED:
to = [f"{BASE_URL}/followers"]
cc = [ap.AS_PUBLIC] + mentioned_actor_ap_ids
elif visibility == ap.VisibilityEnum.FOLLOWERS_ONLY:
to = [f"{BASE_URL}/followers"]
cc = mentioned_actor_ap_ids
elif visibility == ap.VisibilityEnum.DIRECT:
to = mentioned_actor_ap_ids
cc = []
else:
raise ValueError(f"Unhandled visibility {visibility}")
extra_obj_attrs = {}
if ap_type == "Question":
if not poll_answers or len(poll_answers) < 2:
raise ValueError("Question must have at least 2 possible answers")
if not poll_type:
raise ValueError("Mising poll_type")
if not poll_duration_in_minutes:
raise ValueError("Missing poll_duration_in_minutes")
extra_obj_attrs = {
"votersCount": 0,
"endTime": (now() + timedelta(minutes=poll_duration_in_minutes))
.isoformat()
.replace("+00:00", "Z"),
poll_type: [
{
"type": "Note",
"name": answer,
"replies": {"type": "Collection", "totalItems": 0},
}
for answer in poll_answers
],
}
elif ap_type == "Article":
if not name:
raise ValueError("Article must have a name")
extra_obj_attrs = {"name": name}
obj = {
"@context": ap.AS_EXTENDED_CTX,
"type": ap_type,
"id": outbox_object_id(note_id),
"attributedTo": ID,
"content": content,
"to": to,
"cc": cc,
"published": published,
"context": context,
"conversation": context,
"url": outbox_object_id(note_id),
"tag": tags,
"summary": content_warning,
"inReplyTo": in_reply_to,
"sensitive": is_sensitive,
"attachment": attachments,
**extra_obj_attrs, # type: ignore
}
outbox_object = await save_outbox_object(
db_session,
note_id,
obj,
source=source,
conversation=conversation,
)
if not outbox_object.id:
raise ValueError("Should never happen")
for tag in tags:
if tag["type"] == "Hashtag":
tagged_object = models.TaggedOutboxObject(
tag=tag["name"][1:],
outbox_object_id=outbox_object.id,
)
db_session.add(tagged_object)
for (upload, filename, alt) in uploads:
outbox_object_attachment = models.OutboxObjectAttachment(
filename=filename,
alt=alt,
outbox_object_id=outbox_object.id,
upload_id=upload.id,
)
db_session.add(outbox_object_attachment)
recipients = await _compute_recipients(db_session, obj)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
# If the note is public, check if we need to send any webmentions
if visibility == ap.VisibilityEnum.PUBLIC:
possible_targets = await opengraph.external_urls(db_session, outbox_object)
logger.info(f"webmentions possible targert {possible_targets}")
for target in possible_targets:
webmention_endpoint = await webmentions.discover_webmention_endpoint(target)
logger.info(f"{target=} {webmention_endpoint=}")
if webmention_endpoint:
await new_outgoing_activity(
db_session,
webmention_endpoint,
outbox_object_id=outbox_object.id,
webmention_target=target,
)
await db_session.commit()
return note_id
async def send_vote(
db_session: AsyncSession,
in_reply_to: str,
names: list[str],
) -> str:
logger.info(f"Send vote {names}")
published = now().replace(microsecond=0).isoformat().replace("+00:00", "Z")
in_reply_to_object = await get_inbox_object_by_ap_id(db_session, in_reply_to)
if not in_reply_to_object:
raise ValueError(f"Invalid in reply to {in_reply_to=}")
if not in_reply_to_object.ap_context:
raise ValueError("Object has no context")
context = in_reply_to_object.ap_context
# TODO: ensure the name are valid?
# Save the answers
in_reply_to_object.voted_for_answers = names
to = [in_reply_to_object.actor.ap_id]
for name in names:
vote_id = allocate_outbox_id()
note = {
"@context": ap.AS_EXTENDED_CTX,
"type": "Note",
"id": outbox_object_id(vote_id),
"attributedTo": ID,
"name": name,
"to": to,
"cc": [],
"published": published,
"context": context,
"conversation": context,
"url": outbox_object_id(vote_id),
"inReplyTo": in_reply_to,
}
outbox_object = await save_outbox_object(
db_session, vote_id, note, is_transient=True
)
if not outbox_object.id:
raise ValueError("Should never happen")
recipients = await _compute_recipients(db_session, note)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
await db_session.commit()
return vote_id
async def send_update(
db_session: AsyncSession,
ap_id: str,
source: str,
) -> str:
outbox_object = await get_outbox_object_by_ap_id(db_session, ap_id)
if not outbox_object:
raise ValueError(f"{ap_id} not found")
revisions = outbox_object.revisions or []
revisions.append(
{
"ap_object": outbox_object.ap_object,
"source": outbox_object.source,
"updated": (
outbox_object.ap_object.get("updated")
or outbox_object.ap_object.get("published")
),
}
)
updated = now().replace(microsecond=0).isoformat().replace("+00:00", "Z")
content, tags, mentioned_actors = await markdownify(db_session, source)
note = {
"@context": ap.AS_EXTENDED_CTX,
"type": outbox_object.ap_type,
"id": outbox_object.ap_id,
"attributedTo": ID,
"content": content,
"to": outbox_object.ap_object["to"],
"cc": outbox_object.ap_object["cc"],
"published": outbox_object.ap_object["published"],
"context": outbox_object.ap_context,
"conversation": outbox_object.ap_context,
"url": outbox_object.url,
"tag": tags,
"summary": outbox_object.summary,
"inReplyTo": outbox_object.in_reply_to,
"sensitive": outbox_object.sensitive,
"attachment": outbox_object.ap_object["attachment"],
"updated": updated,
}
outbox_object.ap_object = note
outbox_object.source = source
outbox_object.revisions = revisions
recipients = await _compute_recipients(db_session, note)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, outbox_object.id)
# If the note is public, check if we need to send any webmentions
if outbox_object.visibility == ap.VisibilityEnum.PUBLIC:
possible_targets = await opengraph.external_urls(db_session, outbox_object)
logger.info(f"webmentions possible targert {possible_targets}")
for target in possible_targets:
webmention_endpoint = await webmentions.discover_webmention_endpoint(target)
logger.info(f"{target=} {webmention_endpoint=}")
if webmention_endpoint:
await new_outgoing_activity(
db_session,
webmention_endpoint,
outbox_object_id=outbox_object.id,
webmention_target=target,
)
await db_session.commit()
return outbox_object.public_id # type: ignore
async def _compute_recipients(
db_session: AsyncSession, ap_object: ap.RawObject
) -> set[str]:
_recipients = []
for field in ["to", "cc", "bto", "bcc"]:
if field in ap_object:
_recipients.extend(ap.as_list(ap_object[field]))
recipients = set()
logger.info(f"{_recipients}")
for r in _recipients:
if r in [ap.AS_PUBLIC, ID]:
continue
# If we got a local collection, assume it's a collection of actors
if r.startswith(BASE_URL):
for actor in await fetch_actor_collection(db_session, r):
recipients.add(actor.shared_inbox_url)
continue
# Is it a known actor?
known_actor = (
await db_session.execute(
select(models.Actor).where(models.Actor.ap_id == r)
)
).scalar_one_or_none() # type: ignore
if known_actor:
recipients.add(known_actor.shared_inbox_url)
continue
# Fetch the object
raw_object = await ap.fetch(r)
if raw_object.get("type") in ap.ACTOR_TYPES:
saved_actor = await save_actor(db_session, raw_object)
recipients.add(saved_actor.shared_inbox_url)
else:
# Assume it's a collection of actors
for raw_actor in await ap.parse_collection(payload=raw_object):
actor = RemoteActor(raw_actor)
recipients.add(actor.shared_inbox_url)
return recipients
async def _get_following(db_session: AsyncSession) -> list[models.Follower]:
return (
(
await db_session.scalars(
select(models.Following).options(joinedload(models.Following.actor))
)
)
.unique()
.all()
)
async def _get_followers(db_session: AsyncSession) -> list[models.Follower]:
return (
(
await db_session.scalars(
select(models.Follower).options(joinedload(models.Follower.actor))
)
)
.unique()
.all()
)
async def _get_followers_recipients(
db_session: AsyncSession,
skip_actors: list[models.Actor] | None = None,
) -> set[str]:
"""Returns all the recipients from the local follower collection."""
actor_ap_ids_to_skip = []
if skip_actors:
actor_ap_ids_to_skip = [actor.ap_id for actor in skip_actors]
followers = await _get_followers(db_session)
return {
follower.actor.shared_inbox_url # type: ignore
for follower in followers
if follower.actor.ap_id not in actor_ap_ids_to_skip
}
async def get_notification_by_id(
db_session: AsyncSession, notification_id: int
) -> models.Notification | None:
return (
await db_session.execute(
select(models.Notification)
.where(models.Notification.id == notification_id)
.options(
joinedload(models.Notification.inbox_object).options(
joinedload(models.InboxObject.actor)
),
)
)
).scalar_one_or_none() # type: ignore
async def get_inbox_object_by_ap_id(
db_session: AsyncSession, ap_id: str
) -> models.InboxObject | None:
return (
await db_session.execute(
select(models.InboxObject)
.where(models.InboxObject.ap_id == ap_id)
.options(
joinedload(models.InboxObject.actor),
joinedload(models.InboxObject.relates_to_inbox_object),
joinedload(models.InboxObject.relates_to_outbox_object),
)
)
).scalar_one_or_none() # type: ignore
async def get_inbox_delete_for_activity_object_ap_id(
db_session: AsyncSession, activity_object_ap_id: str
) -> models.InboxObject | None:
return (
await db_session.execute(
select(models.InboxObject)
.where(
models.InboxObject.ap_type == "Delete",
models.InboxObject.activity_object_ap_id == activity_object_ap_id,
)
.options(
joinedload(models.InboxObject.actor),
joinedload(models.InboxObject.relates_to_inbox_object),
joinedload(models.InboxObject.relates_to_outbox_object),
)
)
).scalar_one_or_none() # type: ignore
async def get_outbox_object_by_ap_id(
db_session: AsyncSession, ap_id: str
) -> models.OutboxObject | None:
return (
(
await db_session.execute(
select(models.OutboxObject)
.where(models.OutboxObject.ap_id == ap_id)
.options(
joinedload(models.OutboxObject.outbox_object_attachments).options(
joinedload(models.OutboxObjectAttachment.upload)
),
joinedload(models.OutboxObject.relates_to_inbox_object).options(
joinedload(models.InboxObject.actor),
),
joinedload(models.OutboxObject.relates_to_outbox_object).options(
joinedload(
models.OutboxObject.outbox_object_attachments
).options(joinedload(models.OutboxObjectAttachment.upload)),
),
)
)
)
.unique()
.scalar_one_or_none()
) # type: ignore
async def get_anybox_object_by_ap_id(
db_session: AsyncSession, ap_id: str
) -> AnyboxObject | None:
if ap_id.startswith(BASE_URL):
return await get_outbox_object_by_ap_id(db_session, ap_id)
else:
return await get_inbox_object_by_ap_id(db_session, ap_id)
async def _handle_delete_activity(
db_session: AsyncSession,
from_actor: models.Actor,
delete_activity: models.InboxObject,
relates_to_inbox_object: models.InboxObject | None,
forwarded_by_actor: models.Actor | None,
) -> None:
ap_object_to_delete: models.InboxObject | models.Actor | None = None
if relates_to_inbox_object:
ap_object_to_delete = relates_to_inbox_object
elif delete_activity.activity_object_ap_id:
# If it's not a Delete for an inbox object, it may be related to
# an actor
try:
ap_object_to_delete = await fetch_actor(
db_session,
delete_activity.activity_object_ap_id,
save_if_not_found=False,
)
except ap.ObjectNotFoundError:
pass
if ap_object_to_delete is None:
logger.info(
"Received Delete for an unknown object "
f"{delete_activity.activity_object_ap_id}"
)
return
if isinstance(ap_object_to_delete, models.InboxObject):
if from_actor.ap_id != ap_object_to_delete.actor.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_object_to_delete.actor.ap_id}"
)
return
logger.info(
f"Deleting {ap_object_to_delete.ap_type}/{ap_object_to_delete.ap_id}"
)
await _revert_side_effect_for_deleted_object(
db_session,
delete_activity,
ap_object_to_delete,
forwarded_by_actor,
)
ap_object_to_delete.is_deleted = True
elif isinstance(ap_object_to_delete, models.Actor):
if from_actor.ap_id != ap_object_to_delete.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_object_to_delete.ap_id}"
)
return
logger.info(f"Deleting actor {ap_object_to_delete.ap_id}")
follower = (
await db_session.scalars(
select(models.Follower).where(
models.Follower.ap_actor_id == ap_object_to_delete.ap_id,
)
)
).one_or_none()
if follower:
logger.info("Removing actor from follower")
await db_session.delete(follower)
following = (
await db_session.scalars(
select(models.Following).where(
models.Following.ap_actor_id == ap_object_to_delete.ap_id,
)
)
).one_or_none()
if following:
logger.info("Removing actor from following")
await db_session.delete(following)
# Mark the actor as deleted
ap_object_to_delete.is_deleted = True
inbox_objects = (
await db_session.scalars(
select(models.InboxObject).where(
models.InboxObject.actor_id == ap_object_to_delete.id,
models.InboxObject.is_deleted.is_(False),
)
)
).all()
logger.info(f"Deleting {len(inbox_objects)} objects")
for inbox_object in inbox_objects:
await _revert_side_effect_for_deleted_object(
db_session,
delete_activity,
inbox_object,
forwarded_by_actor=None,
)
inbox_object.is_deleted = True
else:
raise ValueError("Should never happen")
await db_session.flush()
async def _revert_side_effect_for_deleted_object(
db_session: AsyncSession,
delete_activity: models.InboxObject,
deleted_ap_object: models.InboxObject,
forwarded_by_actor: models.Actor | None,
) -> None:
is_delete_needs_to_be_forwarded = False
# Decrement the replies counter if needed
if deleted_ap_object.in_reply_to:
replied_object = await get_anybox_object_by_ap_id(
db_session,
deleted_ap_object.in_reply_to,
)
if replied_object:
if replied_object.is_from_outbox:
# It's a local reply that was likely forwarded, the Delete
# also needs to be forwarded
is_delete_needs_to_be_forwarded = True
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == replied_object.id,
)
.values(replies_count=models.OutboxObject.replies_count - 1)
)
else:
await db_session.execute(
update(models.InboxObject)
.where(
models.InboxObject.id == replied_object.id,
)
.values(replies_count=models.InboxObject.replies_count - 1)
)
if deleted_ap_object.ap_type == "Like" and deleted_ap_object.activity_object_ap_id:
related_object = await get_outbox_object_by_ap_id(
db_session,
deleted_ap_object.activity_object_ap_id,
)
if related_object:
if related_object.is_from_outbox:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == related_object.id,
)
.values(likes_count=models.OutboxObject.likes_count - 1)
)
elif (
deleted_ap_object.ap_type == "Annouce"
and deleted_ap_object.activity_object_ap_id
):
related_object = await get_outbox_object_by_ap_id(
db_session,
deleted_ap_object.activity_object_ap_id,
)
if related_object:
if related_object.is_from_outbox:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == related_object.id,
)
.values(announces_count=models.OutboxObject.announces_count - 1)
)
# Delete any Like/Announce
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.activity_object_ap_id == deleted_ap_object.ap_id,
)
.values(is_deleted=True)
)
# If it's a local replies, it was forwarded, so we also need to forward
# the Delete activity if possible
if (
delete_activity.activity_object_ap_id == deleted_ap_object.ap_id
and delete_activity.has_ld_signature
and is_delete_needs_to_be_forwarded
):
logger.info("Forwarding Delete activity as it's a local reply")
# Don't forward to the forwarding actor and the original Delete actor
skip_actors = [delete_activity.actor]
if forwarded_by_actor:
skip_actors.append(forwarded_by_actor)
recipients = await _get_followers_recipients(
db_session,
skip_actors=skip_actors,
)
for rcp in recipients:
await new_outgoing_activity(
db_session,
rcp,
outbox_object_id=None,
inbox_object_id=delete_activity.id,
)
async def _handle_follow_follow_activity(
db_session: AsyncSession,
from_actor: models.Actor,
follow_activity: models.InboxObject,
) -> None:
if follow_activity.activity_object_ap_id != LOCAL_ACTOR.ap_id:
logger.warning(
f"Dropping Follow activity for {follow_activity.activity_object_ap_id}"
)
await db_session.delete(follow_activity)
return
if MANUALLY_APPROVES_FOLLOWERS:
notif = models.Notification(
notification_type=models.NotificationType.PENDING_INCOMING_FOLLOWER,
actor_id=from_actor.id,
inbox_object_id=follow_activity.id,
)
db_session.add(notif)
return None
await _send_accept(db_session, from_actor, follow_activity)
async def _get_incoming_follow_from_notification_id(
db_session: AsyncSession,
notification_id: int,
) -> tuple[models.Notification, models.InboxObject]:
notif = await get_notification_by_id(db_session, notification_id)
if notif is None:
raise ValueError(f"Notification {notification_id=} not found")
if notif.inbox_object is None:
raise ValueError("Should never happen")
if ap_type := notif.inbox_object.ap_type != "Follow":
raise ValueError(f"Unexpected {ap_type=}")
return notif, notif.inbox_object
async def send_accept(
db_session: AsyncSession,
notification_id: int,
) -> None:
notif, incoming_follow_request = await _get_incoming_follow_from_notification_id(
db_session, notification_id
)
await _send_accept(
db_session, incoming_follow_request.actor, incoming_follow_request
)
notif.is_accepted = True
await db_session.commit()
async def _send_accept(
db_session: AsyncSession,
from_actor: models.Actor,
inbox_object: models.InboxObject,
) -> None:
follower = models.Follower(
actor_id=from_actor.id,
inbox_object_id=inbox_object.id,
ap_actor_id=from_actor.ap_id,
)
try:
db_session.add(follower)
await db_session.flush()
except IntegrityError:
pass # TODO update the existing followe
# Reply with an Accept
reply_id = allocate_outbox_id()
reply = {
"@context": ap.AS_CTX,
"id": outbox_object_id(reply_id),
"type": "Accept",
"actor": ID,
"object": inbox_object.ap_id,
}
outbox_activity = await save_outbox_object(
db_session, reply_id, reply, relates_to_inbox_object_id=inbox_object.id
)
if not outbox_activity.id:
raise ValueError("Should never happen")
await new_outgoing_activity(db_session, from_actor.inbox_url, outbox_activity.id)
notif = models.Notification(
notification_type=models.NotificationType.NEW_FOLLOWER,
actor_id=from_actor.id,
)
db_session.add(notif)
async def send_reject(
db_session: AsyncSession,
notification_id: int,
) -> None:
notif, incoming_follow_request = await _get_incoming_follow_from_notification_id(
db_session, notification_id
)
await _send_reject(
db_session, incoming_follow_request.actor, incoming_follow_request
)
notif.is_rejected = True
await db_session.commit()
async def _send_reject(
db_session: AsyncSession,
from_actor: models.Actor,
inbox_object: models.InboxObject,
) -> None:
# Reply with an Accept
reply_id = allocate_outbox_id()
reply = {
"@context": ap.AS_CTX,
"id": outbox_object_id(reply_id),
"type": "Reject",
"actor": ID,
"object": inbox_object.ap_id,
}
outbox_activity = await save_outbox_object(
db_session, reply_id, reply, relates_to_inbox_object_id=inbox_object.id
)
if not outbox_activity.id:
raise ValueError("Should never happen")
await new_outgoing_activity(db_session, from_actor.inbox_url, outbox_activity.id)
notif = models.Notification(
notification_type=models.NotificationType.REJECTED_FOLLOWER,
actor_id=from_actor.id,
)
db_session.add(notif)
async def _handle_undo_activity(
db_session: AsyncSession,
from_actor: models.Actor,
undo_activity: models.InboxObject,
ap_activity_to_undo: models.InboxObject,
) -> None:
if from_actor.ap_id != ap_activity_to_undo.actor.ap_id:
logger.warning(
"Actor mismatch between the activity and the object: "
f"{from_actor.ap_id}/{ap_activity_to_undo.actor.ap_id}"
)
return
ap_activity_to_undo.undone_by_inbox_object_id = undo_activity.id
ap_activity_to_undo.is_deleted = True
if ap_activity_to_undo.ap_type == "Follow":
logger.info(f"Undo follow from {from_actor.ap_id}")
await db_session.execute(
delete(models.Follower).where(
models.Follower.inbox_object_id == ap_activity_to_undo.id
)
)
notif = models.Notification(
notification_type=models.NotificationType.UNFOLLOW,
actor_id=from_actor.id,
)
db_session.add(notif)
elif ap_activity_to_undo.ap_type == "Like":
if not ap_activity_to_undo.activity_object_ap_id:
raise ValueError("Like without object")
liked_obj = await get_outbox_object_by_ap_id(
db_session,
ap_activity_to_undo.activity_object_ap_id,
)
if not liked_obj:
logger.warning(
"Cannot find liked object: "
f"{ap_activity_to_undo.activity_object_ap_id}"
)
return
liked_obj.likes_count = models.OutboxObject.likes_count - 1
notif = models.Notification(
notification_type=models.NotificationType.UNDO_LIKE,
actor_id=from_actor.id,
outbox_object_id=liked_obj.id,
inbox_object_id=ap_activity_to_undo.id,
)
db_session.add(notif)
elif ap_activity_to_undo.ap_type == "Announce":
if not ap_activity_to_undo.activity_object_ap_id:
raise ValueError("Announce witout object")
announced_obj_ap_id = ap_activity_to_undo.activity_object_ap_id
logger.info(
f"Undo for announce {ap_activity_to_undo.ap_id}/{announced_obj_ap_id}"
)
if announced_obj_ap_id.startswith(BASE_URL):
announced_obj_from_outbox = await get_outbox_object_by_ap_id(
db_session, announced_obj_ap_id
)
if announced_obj_from_outbox:
logger.info("Found in the oubox")
announced_obj_from_outbox.announces_count = (
models.OutboxObject.announces_count - 1
)
notif = models.Notification(
notification_type=models.NotificationType.UNDO_ANNOUNCE,
actor_id=from_actor.id,
outbox_object_id=announced_obj_from_outbox.id,
inbox_object_id=ap_activity_to_undo.id,
)
db_session.add(notif)
else:
logger.warning(f"Don't know how to undo {ap_activity_to_undo.ap_type} activity")
# commit will be perfomed in save_to_inbox
async def _handle_move_activity(
db_session: AsyncSession,
from_actor: models.Actor,
move_activity: models.InboxObject,
) -> None:
logger.info("Processing Move activity")
# Ensure the object matches the actor
old_actor_id = ap.get_object_id(move_activity.ap_object)
if old_actor_id != from_actor.ap_id:
logger.warning(
f"Object does not match the actor: {old_actor_id}/{from_actor.ap_id}"
)
return None
# Fetch the target account
new_actor_id = move_activity.ap_object.get("target")
if not new_actor_id:
logger.warning("Missing target")
return None
new_actor = await fetch_actor(db_session, new_actor_id)
# Ensure the target account references the old account
if old_actor_id not in (aks := new_actor.ap_actor.get("alsoKnownAs", [])):
logger.warning(
f"New account does not have have an alias for the old account: {aks}"
)
return None
# Unfollow the old account
following = (
await db_session.execute(
select(models.Following)
.where(models.Following.ap_actor_id == old_actor_id)
.options(joinedload(models.Following.outbox_object))
)
).scalar_one_or_none()
if not following:
logger.warning("Not following the Move actor")
return
await _send_undo(db_session, following.outbox_object.ap_id)
# Follow the new one
await _send_follow(db_session, new_actor_id)
async def _handle_update_activity(
db_session: AsyncSession,
from_actor: models.Actor,
update_activity: models.InboxObject,
) -> None:
logger.info("Processing Update activity")
wrapped_object = await ap.get_object(update_activity.ap_object)
if wrapped_object["type"] in ap.ACTOR_TYPES:
logger.info("Updating actor")
updated_actor = RemoteActor(wrapped_object)
if (
from_actor.ap_id != updated_actor.ap_id
or from_actor.ap_type != updated_actor.ap_type
or from_actor.handle != updated_actor.handle
):
raise ValueError(
f"Invalid Update activity {from_actor.ap_actor}/"
f"{updated_actor.ap_actor}"
)
# Update the actor
from_actor.ap_actor = updated_actor.ap_actor
elif (ap_type := wrapped_object["type"]) in [
"Question",
"Note",
"Article",
"Page",
"Video",
]:
logger.info(f"Updating {ap_type}")
existing_object = await get_inbox_object_by_ap_id(
db_session, wrapped_object["id"]
)
if not existing_object:
logger.info(f"{ap_type} not found in the inbox")
elif existing_object.actor.ap_id != from_actor.ap_id:
logger.warning(
f"Update actor does not match the {ap_type} actor {from_actor.ap_id}"
f"/{existing_object.actor.ap_id}"
)
else:
# Everything looks correct, update the object in the inbox
logger.info(f"Updating {existing_object.ap_id}")
existing_object.ap_object = wrapped_object
else:
# TODO(ts): support updating objects
logger.info(f'Cannot update {wrapped_object["type"]}')
async def _handle_create_activity(
db_session: AsyncSession,
from_actor: models.Actor,
create_activity: models.InboxObject,
forwarded_by_actor: models.Actor | None = None,
) -> None:
logger.info("Processing Create activity")
wrapped_object = ap.unwrap_activity(create_activity.ap_object)
if create_activity.actor.ap_id != ap.get_actor_id(wrapped_object):
raise ValueError("Object actor does not match activity")
ro = RemoteObject(wrapped_object, actor=from_actor)
# Check if we already received a delete for this object (happens often
# with forwarded replies)
delete_object = await get_inbox_delete_for_activity_object_ap_id(
db_session,
ro.ap_id,
)
if delete_object:
if delete_object.actor.ap_id != from_actor.ap_id:
logger.warning(
f"Got a Delete for {ro.ap_id} from {delete_object.actor.ap_id}??"
)
else:
logger.info("Got a Delete for this object, deleting activity")
create_activity.is_deleted = True
await db_session.flush()
return None
await _process_note_object(
db_session,
create_activity,
from_actor,
ro,
forwarded_by_actor=forwarded_by_actor,
)
async def _handle_read_activity(
db_session: AsyncSession,
from_actor: models.Actor,
read_activity: models.InboxObject,
) -> None:
logger.info("Processing Read activity")
# Honk uses Read activity to propagate replies, fetch the read object
# from the remote server
wrapped_object = await ap.fetch(ap.get_id(read_activity.ap_object["object"]))
wrapped_object_actor = await fetch_actor(
db_session, ap.get_actor_id(wrapped_object)
)
if not wrapped_object_actor.is_blocked:
ro = RemoteObject(wrapped_object, actor=wrapped_object_actor)
# Then process it likes it's coming from a forwarded activity
await _process_note_object(db_session, read_activity, wrapped_object_actor, ro)
async def _process_note_object(
db_session: AsyncSession,
parent_activity: models.InboxObject,
from_actor: models.Actor,
ro: RemoteObject,
forwarded_by_actor: models.Actor | None = None,
) -> None:
if parent_activity.ap_type not in ["Create", "Read"]:
raise ValueError(f"Unexpected parent activity {parent_activity.ap_id}")
ap_published_at = now()
if "published" in ro.ap_object:
ap_published_at = parse_isoformat(ro.ap_object["published"])
following = await _get_following(db_session)
is_from_following = ro.actor.ap_id in {f.ap_actor_id for f in following}
is_reply = bool(ro.in_reply_to)
is_local_reply = (
ro.in_reply_to
and ro.in_reply_to.startswith(BASE_URL)
and ro.content # Hide votes from Question
)
is_mention = False
tags = ro.ap_object.get("tag", [])
for tag in ap.as_list(tags):
if tag.get("name") == LOCAL_ACTOR.handle or tag.get("href") == LOCAL_ACTOR.url:
is_mention = True
inbox_object = models.InboxObject(
server=urlparse(ro.ap_id).hostname,
actor_id=from_actor.id,
ap_actor_id=from_actor.ap_id,
ap_type=ro.ap_type,
ap_id=ro.ap_id,
ap_context=ro.ap_context,
conversation=await fetch_conversation_root(db_session, ro),
ap_published_at=ap_published_at,
ap_object=ro.ap_object,
visibility=ro.visibility,
relates_to_inbox_object_id=parent_activity.id,
relates_to_outbox_object_id=None,
activity_object_ap_id=ro.activity_object_ap_id,
og_meta=await opengraph.og_meta_from_note(db_session, ro),
# Hide replies from the stream
is_hidden_from_stream=not (
(not is_reply and is_from_following) or is_mention or is_local_reply
),
)
db_session.add(inbox_object)
await db_session.flush()
await db_session.refresh(inbox_object)
parent_activity.relates_to_inbox_object_id = inbox_object.id
if inbox_object.in_reply_to:
replied_object = await get_anybox_object_by_ap_id(
db_session, inbox_object.in_reply_to
)
if replied_object:
if replied_object.is_from_outbox:
if replied_object.ap_type == "Question" and inbox_object.ap_object.get(
"name"
):
await _handle_vote_answer(
db_session,
inbox_object,
replied_object, # type: ignore # outbox check below
)
else:
await db_session.execute(
update(models.OutboxObject)
.where(
models.OutboxObject.id == replied_object.id,
)
.values(replies_count=models.OutboxObject.replies_count + 1)
)
else:
await db_session.execute(
update(models.InboxObject)
.where(
models.InboxObject.id == replied_object.id,
)
.values(replies_count=models.InboxObject.replies_count + 1)
)
# This object is a reply of a local object, we may need to forward it
# to our followers (we can only forward JSON-LD signed activities)
if (
parent_activity.ap_type == "Create"
and replied_object
and replied_object.is_from_outbox
and replied_object.ap_type != "Question"
and parent_activity.has_ld_signature
):
logger.info("Forwarding Create activity as it's a local reply")
skip_actors = [parent_activity.actor]
if forwarded_by_actor:
skip_actors.append(forwarded_by_actor)
recipients = await _get_followers_recipients(
db_session,
skip_actors=skip_actors,
)
for rcp in recipients:
await new_outgoing_activity(
db_session,
rcp,
outbox_object_id=None,
inbox_object_id=parent_activity.id,
)
if is_mention:
notif = models.Notification(
notification_type=models.NotificationType.MENTION,
actor_id=from_actor.id,
inbox_object_id=inbox_object.id,
)
db_session.add(notif)
async def _handle_vote_answer(
db_session: AsyncSession,
answer: models.InboxObject,
question: models.OutboxObject,
) -> None:
logger.info(f"Processing poll answer for {question.ap_id}: {answer.ap_id}")
if question.is_poll_ended:
logger.warning("Poll is ended, discarding answer")
return
if not question.poll_items:
raise ValueError("Should never happen")
answer_name = answer.ap_object["name"]
if answer_name not in {pi["name"] for pi in question.poll_items}:
logger.warning(f"Invalid answer {answer_name=}")
return
answer.is_transient = True
poll_answer = models.PollAnswer(
outbox_object_id=question.id,
poll_type="oneOf" if question.is_one_of_poll else "anyOf",
inbox_object_id=answer.id,
actor_id=answer.actor.id,
name=answer_name,
)
db_session.add(poll_answer)
await db_session.flush()
voters_count = await db_session.scalar(
select(func.count(func.distinct(models.PollAnswer.actor_id))).where(
models.PollAnswer.outbox_object_id == question.id
)
)
all_answers = await db_session.execute(
select(
func.count(models.PollAnswer.name).label("answer_count"),
models.PollAnswer.name,
)
.where(models.PollAnswer.outbox_object_id == question.id)
.group_by(models.PollAnswer.name)
)
all_answers_count = {a["name"]: a["answer_count"] for a in all_answers}
logger.info(f"{voters_count=}")
logger.info(f"{all_answers_count=}")
question_ap_object = dict(question.ap_object)
question_ap_object["votersCount"] = voters_count
items_key = "oneOf" if question.is_one_of_poll else "anyOf"
question_ap_object[items_key] = [
{
"type": "Note",
"name": item["name"],
"replies": {
"type": "Collection",
"totalItems": all_answers_count.get(item["name"], 0),
},
}
for item in question.poll_items
]
updated = now().replace(microsecond=0).isoformat().replace("+00:00", "Z")
question_ap_object["updated"] = updated
question.ap_object = question_ap_object
logger.info(f"Updated question: {question.ap_object}")
await db_session.flush()
# Finally send an update
recipients = await _compute_recipients(db_session, question.ap_object)
for rcp in recipients:
await new_outgoing_activity(db_session, rcp, question.id)
async def _handle_announce_activity(
db_session: AsyncSession,
actor: models.Actor,
announce_activity: models.InboxObject,
relates_to_outbox_object: models.OutboxObject | None,
relates_to_inbox_object: models.InboxObject | None,
):
if relates_to_outbox_object:
# This is an announce for a local object
relates_to_outbox_object.announces_count = (
models.OutboxObject.announces_count + 1
)
notif = models.Notification(
notification_type=models.NotificationType.ANNOUNCE,
actor_id=actor.id,
outbox_object_id=relates_to_outbox_object.id,
inbox_object_id=announce_activity.id,
)
db_session.add(notif)
else:
# Only show the announce in the stream if it comes from an actor
# in the following collection
followings = await _get_following(db_session)
is_from_following = announce_activity.actor.ap_id in {
f.ap_actor_id for f in followings
}
# This is announce for a maybe unknown object
if relates_to_inbox_object:
# We already know about this object, show the announce in the
# stream if it's not already there, from an followed actor
# and if we haven't seen it recently
if (
now() - as_utc(relates_to_inbox_object.ap_published_at) # type: ignore
) > timedelta(hours=1):
announce_activity.is_hidden_from_stream = not is_from_following
else:
# Save it as an inbox object
if not announce_activity.activity_object_ap_id:
raise ValueError("Should never happen")
announced_raw_object = await ap.fetch(
announce_activity.activity_object_ap_id
)
announced_actor = await fetch_actor(
db_session, ap.get_actor_id(announced_raw_object)
)
if not announced_actor.is_blocked:
announced_object = RemoteObject(announced_raw_object, announced_actor)
announced_inbox_object = models.InboxObject(
server=urlparse(announced_object.ap_id).hostname,
actor_id=announced_actor.id,
ap_actor_id=announced_actor.ap_id,
ap_type=announced_object.ap_type,
ap_id=announced_object.ap_id,
ap_context=announced_object.ap_context,
ap_published_at=announced_object.ap_published_at,
ap_object=announced_object.ap_object,
visibility=announced_object.visibility,
og_meta=await opengraph.og_meta_from_note(
db_session, announced_object
),
is_hidden_from_stream=True,
)
db_session.add(announced_inbox_object)
await db_session.flush()
announce_activity.relates_to_inbox_object_id = announced_inbox_object.id
announce_activity.is_hidden_from_stream = not is_from_following
async def _handle_like_activity(
db_session: AsyncSession,
actor: models.Actor,
like_activity: models.InboxObject,
relates_to_outbox_object: models.OutboxObject | None,
relates_to_inbox_object: models.InboxObject | None,
):
if not relates_to_outbox_object:
logger.info(
"Received a like for an unknown activity: "
f"{like_activity.activity_object_ap_id}, deleting the activity"
)
await db_session.delete(like_activity)
else:
relates_to_outbox_object.likes_count = models.OutboxObject.likes_count + 1
notif = models.Notification(
notification_type=models.NotificationType.LIKE,
actor_id=actor.id,
outbox_object_id=relates_to_outbox_object.id,
inbox_object_id=like_activity.id,
)
db_session.add(notif)
async def _process_transient_object(
db_session: AsyncSession,
raw_object: ap.RawObject,
from_actor: models.Actor,
) -> None:
ap_type = raw_object["type"]
if ap_type in ["Add", "Remove"]:
logger.info(f"Dropping unsupported {ap_type} object")
else:
logger.warning(f"Received unknown {ap_type} object")
return None
async def save_to_inbox(
db_session: AsyncSession,
raw_object: ap.RawObject,
sent_by_ap_actor_id: str,
) -> None:
try:
actor = await fetch_actor(db_session, ap.get_id(raw_object["actor"]))
except ap.ObjectNotFoundError:
logger.warning("Actor not found")
return
except httpx.HTTPStatusError:
logger.exception("Failed to fetch actor")
return
if actor.server in BLOCKED_SERVERS:
logger.warning(f"Server {actor.server} is blocked")
return
if "id" not in raw_object:
await _process_transient_object(db_session, raw_object, actor)
return None
if actor.is_blocked:
logger.warning("Actor {actor.ap_id} is blocked, ignoring object")
return None
raw_object_id = ap.get_id(raw_object)
forwarded_by_actor = None
# Ensure forwarded activities have a valid LD sig
if sent_by_ap_actor_id != actor.ap_id:
logger.info(
f"Processing a forwarded activity {sent_by_ap_actor_id=}/{actor.ap_id}"
)
forwarded_by_actor = await fetch_actor(db_session, sent_by_ap_actor_id)
if not (await ldsig.verify_signature(db_session, raw_object)):
logger.warning(
f"Failed to verify LD sig, fetching remote object {raw_object_id}"
)
# Try to fetch the remote object since we failed to verify the LD sig
try:
raw_object = await ap.fetch(raw_object_id)
except Exception:
raise fastapi.HTTPException(status_code=401, detail="Invalid LD sig")
# Transient activities from Mastodon like Like are not fetchable and
# will return the actor instead
if raw_object["id"] != raw_object_id:
logger.info(f"Unable to fetch {raw_object_id}")
return None
if (
await db_session.scalar(
select(func.count(models.InboxObject.id)).where(
models.InboxObject.ap_id == raw_object_id
)
)
> 0
):
logger.info(
f'Received duplicate {raw_object["type"]} activity: {raw_object_id}'
)
return
ap_published_at = now()
if "published" in raw_object:
ap_published_at = parse_isoformat(raw_object["published"])
activity_ro = RemoteObject(raw_object, actor=actor)
relates_to_inbox_object: models.InboxObject | None = None
relates_to_outbox_object: models.OutboxObject | None = None
if activity_ro.activity_object_ap_id:
if activity_ro.activity_object_ap_id.startswith(BASE_URL):
relates_to_outbox_object = await get_outbox_object_by_ap_id(
db_session,
activity_ro.activity_object_ap_id,
)
else:
relates_to_inbox_object = await get_inbox_object_by_ap_id(
db_session,
activity_ro.activity_object_ap_id,
)
inbox_object = models.InboxObject(
server=urlparse(activity_ro.ap_id).hostname,
actor_id=actor.id,
ap_actor_id=actor.ap_id,
ap_type=activity_ro.ap_type,
ap_id=activity_ro.ap_id,
ap_context=activity_ro.ap_context,
ap_published_at=ap_published_at,
ap_object=activity_ro.ap_object,
visibility=activity_ro.visibility,
relates_to_inbox_object_id=relates_to_inbox_object.id
if relates_to_inbox_object
else None,
relates_to_outbox_object_id=relates_to_outbox_object.id
if relates_to_outbox_object
else None,
activity_object_ap_id=activity_ro.activity_object_ap_id,
is_hidden_from_stream=True,
)
db_session.add(inbox_object)
await db_session.flush()
await db_session.refresh(inbox_object)
if activity_ro.ap_type == "Create":
await _handle_create_activity(
db_session, actor, inbox_object, forwarded_by_actor=forwarded_by_actor
)
elif activity_ro.ap_type == "Read":
await _handle_read_activity(db_session, actor, inbox_object)
elif activity_ro.ap_type == "Update":
await _handle_update_activity(db_session, actor, inbox_object)
elif activity_ro.ap_type == "Move":
await _handle_move_activity(db_session, actor, inbox_object)
elif activity_ro.ap_type == "Delete":
await _handle_delete_activity(
db_session,
actor,
inbox_object,
relates_to_inbox_object,
forwarded_by_actor=forwarded_by_actor,
)
elif activity_ro.ap_type == "Follow":
await _handle_follow_follow_activity(db_session, actor, inbox_object)
elif activity_ro.ap_type == "Undo":
if relates_to_inbox_object:
await _handle_undo_activity(
db_session, actor, inbox_object, relates_to_inbox_object
)
else:
logger.info("Received Undo for an unknown activity")
elif activity_ro.ap_type in ["Accept", "Reject"]:
if not relates_to_outbox_object:
logger.info(
f"Received {raw_object['type']} for an unknown activity: "
f"{activity_ro.activity_object_ap_id}"
)
else:
if relates_to_outbox_object.ap_type == "Follow":
notif_type = (
models.NotificationType.FOLLOW_REQUEST_ACCEPTED
if activity_ro.ap_type == "Accept"
else models.NotificationType.FOLLOW_REQUEST_REJECTED
)
notif = models.Notification(
notification_type=notif_type,
actor_id=actor.id,
inbox_object_id=inbox_object.id,
)
db_session.add(notif)
if activity_ro.ap_type == "Accept":
following = models.Following(
actor_id=actor.id,
outbox_object_id=relates_to_outbox_object.id,
ap_actor_id=actor.ap_id,
)
db_session.add(following)
# Pre-fetch the latest activities
try:
await _prefetch_actor_outbox(db_session, actor)
except Exception:
logger.exception(f"Failed to prefetch outbox for {actor.ap_id}")
elif activity_ro.ap_type == "Reject":
maybe_following = (
await db_session.scalars(
select(models.Following).where(
models.Following.ap_actor_id == actor.ap_id,
)
)
).one_or_none()
if maybe_following:
logger.info("Removing actor from following")
await db_session.delete(maybe_following)
else:
logger.info(
"Received an Accept for an unsupported activity: "
f"{relates_to_outbox_object.ap_type}"
)
elif activity_ro.ap_type == "EmojiReact":
if not relates_to_outbox_object:
logger.info(
"Received a reaction for an unknown activity: "
f"{activity_ro.activity_object_ap_id}"
)
await db_session.delete(inbox_object)
else:
# TODO(ts): support reactions
pass
elif activity_ro.ap_type == "Like":
await _handle_like_activity(
db_session,
actor,
inbox_object,
relates_to_outbox_object,
relates_to_inbox_object,
)
elif activity_ro.ap_type == "Announce":
await _handle_announce_activity(
db_session,
actor,
inbox_object,
relates_to_outbox_object,
relates_to_inbox_object,
)
else:
logger.warning(f"Received an unknown {inbox_object.ap_type} object")
await db_session.commit()
async def _prefetch_actor_outbox(
db_session: AsyncSession,
actor: models.Actor,
) -> None:
"""Try to fetch some notes to fill the stream"""
saved = 0
outbox = await ap.parse_collection(actor.outbox_url, limit=20)
for activity in outbox:
activity_id = ap.get_id(activity)
raw_activity = await ap.fetch(activity_id)
if ap.as_list(raw_activity["type"])[0] == "Create":
obj = await ap.get_object(raw_activity)
saved_inbox_object = await get_inbox_object_by_ap_id(
db_session, ap.get_id(obj)
)
if not saved_inbox_object:
saved_inbox_object = await save_object_to_inbox(db_session, obj)
if not saved_inbox_object.in_reply_to:
saved_inbox_object.is_hidden_from_stream = False
saved += 1
if saved >= 5:
break
# commit is performed by the called
async def save_object_to_inbox(
db_session: AsyncSession,
raw_object: ap.RawObject,
) -> models.InboxObject:
"""Used to save unknown object before intetacting with them, i.e. to like
an object that was looked up, or prefill the inbox when an actor accepted
a follow request."""
obj_actor = await fetch_actor(db_session, ap.get_actor_id(raw_object))
ro = RemoteObject(raw_object, actor=obj_actor)
ap_published_at = now()
if "published" in ro.ap_object:
ap_published_at = parse_isoformat(ro.ap_object["published"])
inbox_object = models.InboxObject(
server=urlparse(ro.ap_id).hostname,
actor_id=obj_actor.id,
ap_actor_id=obj_actor.ap_id,
ap_type=ro.ap_type,
ap_id=ro.ap_id,
ap_context=ro.ap_context,
conversation=await fetch_conversation_root(db_session, ro),
ap_published_at=ap_published_at,
ap_object=ro.ap_object,
visibility=ro.visibility,
relates_to_inbox_object_id=None,
relates_to_outbox_object_id=None,
activity_object_ap_id=ro.activity_object_ap_id,
og_meta=await opengraph.og_meta_from_note(db_session, ro),
is_hidden_from_stream=True,
)
db_session.add(inbox_object)
await db_session.flush()
await db_session.refresh(inbox_object)
return inbox_object
async def public_outbox_objects_count(db_session: AsyncSession) -> int:
return await db_session.scalar(
select(func.count(models.OutboxObject.id)).where(
models.OutboxObject.visibility == ap.VisibilityEnum.PUBLIC,
models.OutboxObject.is_deleted.is_(False),
)
)
async def fetch_actor_collection(db_session: AsyncSession, url: str) -> list[Actor]:
if url.startswith(config.BASE_URL):
if url == config.BASE_URL + "/followers":
followers = (
(
await db_session.scalars(
select(models.Follower).options(
joinedload(models.Follower.actor)
)
)
)
.unique()
.all()
)
return [follower.actor for follower in followers]
else:
raise ValueError(f"internal collection for {url}) not supported")
return [RemoteActor(actor) for actor in await ap.parse_collection(url)]
@dataclass
class ReplyTreeNode:
ap_object: AnyboxObject
children: list["ReplyTreeNode"]
is_requested: bool = False
is_root: bool = False
async def get_replies_tree(
db_session: AsyncSession,
requested_object: AnyboxObject,
is_current_user_admin: bool,
) -> ReplyTreeNode:
# XXX: PeerTube video don't use context
tree_nodes: list[AnyboxObject] = []
if requested_object.conversation is None:
tree_nodes = [requested_object]
else:
allowed_visibility = [ap.VisibilityEnum.PUBLIC, ap.VisibilityEnum.UNLISTED]
if is_current_user_admin:
allowed_visibility = list(ap.VisibilityEnum)
tree_nodes.extend(
(
await db_session.scalars(
select(models.InboxObject)
.where(
models.InboxObject.conversation
== requested_object.conversation,
models.InboxObject.ap_type.in_(["Note", "Page", "Article"]),
models.InboxObject.is_deleted.is_(False),
models.InboxObject.visibility.in_(allowed_visibility),
)
.options(joinedload(models.InboxObject.actor))
)
)
.unique()
.all()
)
tree_nodes.extend(
(
await db_session.scalars(
select(models.OutboxObject)
.where(
models.OutboxObject.conversation
== requested_object.conversation,
models.OutboxObject.is_deleted.is_(False),
models.OutboxObject.ap_type.in_(["Note", "Page", "Article"]),
models.OutboxObject.visibility.in_(allowed_visibility),
)
.options(
joinedload(
models.OutboxObject.outbox_object_attachments
).options(joinedload(models.OutboxObjectAttachment.upload))
)
)
)
.unique()
.all()
)
nodes_by_in_reply_to = defaultdict(list)
for node in tree_nodes:
nodes_by_in_reply_to[node.in_reply_to].append(node)
logger.info(nodes_by_in_reply_to)
if len(nodes_by_in_reply_to.get(None, [])) > 1:
raise ValueError(f"Invalid replies tree: {[n.ap_object for n in tree_nodes]}")
def _get_reply_node_children(
node: ReplyTreeNode,
index: defaultdict[str | None, list[AnyboxObject]],
) -> list[ReplyTreeNode]:
children = []
for child in index.get(node.ap_object.ap_id, []): # type: ignore
child_node = ReplyTreeNode(
ap_object=child,
is_requested=child.ap_id == requested_object.ap_id, # type: ignore
children=[],
)
child_node.children = _get_reply_node_children(child_node, index)
children.append(child_node)
return sorted(
children,
key=lambda node: node.ap_object.ap_published_at, # type: ignore
)
if None in nodes_by_in_reply_to:
root_ap_object = nodes_by_in_reply_to[None][0]
else:
root_ap_object = sorted(
tree_nodes,
key=lambda ap_obj: ap_obj.ap_published_at, # type: ignore
)[0]
root_node = ReplyTreeNode(
ap_object=root_ap_object,
is_root=True,
is_requested=root_ap_object.ap_id == requested_object.ap_id,
children=[],
)
root_node.children = _get_reply_node_children(root_node, nodes_by_in_reply_to)
return root_node