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Thomas Sileo 2022-06-22 20:11:22 +02:00
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__pycache__/
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GNU AFFERO GENERAL PUBLIC LICENSE
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README.md 100644
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# microblog.pub
This branch is a complete rewrite of the original microblog.pub server.
The original server became hard to debug, maintain and is not super easy to deploy (due to the dependecies like MongoDB).
This rewrite is built using "modern" Python 3.10, SQLite and does not need any external tasks queue service.
It is still in early development, this README will be updated when I get to deploy a personal instance in the wild.

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alembic.ini 100644
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# A generic, single database configuration.
[alembic]
# path to migration scripts
script_location = alembic
# template used to generate migration file names; The default value is %%(rev)s_%%(slug)s
# Uncomment the line below if you want the files to be prepended with date and time
# see https://alembic.sqlalchemy.org/en/latest/tutorial.html#editing-the-ini-file
# for all available tokens
# file_template = %%(year)d_%%(month).2d_%%(day).2d_%%(hour).2d%%(minute).2d-%%(rev)s_%%(slug)s
# sys.path path, will be prepended to sys.path if present.
# defaults to the current working directory.
prepend_sys_path = .
# timezone to use when rendering the date within the migration file
# as well as the filename.
# If specified, requires the python-dateutil library that can be
# installed by adding `alembic[tz]` to the pip requirements
# string value is passed to dateutil.tz.gettz()
# leave blank for localtime
# timezone =
# max length of characters to apply to the
# "slug" field
# truncate_slug_length = 40
# set to 'true' to run the environment during
# the 'revision' command, regardless of autogenerate
# revision_environment = false
# set to 'true' to allow .pyc and .pyo files without
# a source .py file to be detected as revisions in the
# versions/ directory
# sourceless = false
# version location specification; This defaults
# to alembic/versions. When using multiple version
# directories, initial revisions must be specified with --version-path.
# The path separator used here should be the separator specified by "version_path_separator" below.
# version_locations = %(here)s/bar:%(here)s/bat:alembic/versions
# version path separator; As mentioned above, this is the character used to split
# version_locations. The default within new alembic.ini files is "os", which uses os.pathsep.
# If this key is omitted entirely, it falls back to the legacy behavior of splitting on spaces and/or commas.
# Valid values for version_path_separator are:
#
# version_path_separator = :
# version_path_separator = ;
# version_path_separator = space
version_path_separator = os # Use os.pathsep. Default configuration used for new projects.
# the output encoding used when revision files
# are written from script.py.mako
# output_encoding = utf-8
sqlalchemy.url =
[post_write_hooks]
# post_write_hooks defines scripts or Python functions that are run
# on newly generated revision scripts. See the documentation for further
# detail and examples
# format using "black" - use the console_scripts runner, against the "black" entrypoint
# hooks = black
# black.type = console_scripts
# black.entrypoint = black
# black.options = -l 79 REVISION_SCRIPT_FILENAME
# Logging configuration
[loggers]
keys = root,sqlalchemy,alembic
[handlers]
keys = console
[formatters]
keys = generic
[logger_root]
level = WARN
handlers = console
qualname =
[logger_sqlalchemy]
level = WARN
handlers =
qualname = sqlalchemy.engine
[logger_alembic]
level = INFO
handlers =
qualname = alembic
[handler_console]
class = StreamHandler
args = (sys.stderr,)
level = NOTSET
formatter = generic
[formatter_generic]
format = %(levelname)-5.5s [%(name)s] %(message)s
datefmt = %H:%M:%S

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Generic single-database configuration.

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from logging.config import fileConfig
from sqlalchemy import engine_from_config
from sqlalchemy import pool
import app.models # noqa: F401 # Register models
from alembic import context
from app.database import SQLALCHEMY_DATABASE_URL
from app.database import Base
# this is the Alembic Config object, which provides
# access to the values within the .ini file in use.
config = context.config
# Interpret the config file for Python logging.
# This line sets up loggers basically.
if config.config_file_name is not None:
fileConfig(config.config_file_name)
config.set_main_option("sqlalchemy.url", SQLALCHEMY_DATABASE_URL)
# add your model's MetaData object here
# for 'autogenerate' support
# from myapp import mymodel
# target_metadata = mymodel.Base.metadata
target_metadata = Base.metadata
# other values from the config, defined by the needs of env.py,
# can be acquired:
# my_important_option = config.get_main_option("my_important_option")
# ... etc.
def run_migrations_offline() -> None:
"""Run migrations in 'offline' mode.
This configures the context with just a URL
and not an Engine, though an Engine is acceptable
here as well. By skipping the Engine creation
we don't even need a DBAPI to be available.
Calls to context.execute() here emit the given string to the
script output.
"""
url = config.get_main_option("sqlalchemy.url")
context.configure(
url=url,
target_metadata=target_metadata,
literal_binds=True,
dialect_opts={"paramstyle": "named"},
)
with context.begin_transaction():
context.run_migrations()
def run_migrations_online() -> None:
"""Run migrations in 'online' mode.
In this scenario we need to create an Engine
and associate a connection with the context.
"""
connectable = engine_from_config(
config.get_section(config.config_ini_section),
prefix="sqlalchemy.",
poolclass=pool.NullPool,
)
with connectable.connect() as connection:
context.configure(connection=connection, target_metadata=target_metadata)
with context.begin_transaction():
context.run_migrations()
if context.is_offline_mode():
run_migrations_offline()
else:
run_migrations_online()

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"""${message}
Revision ID: ${up_revision}
Revises: ${down_revision | comma,n}
Create Date: ${create_date}
"""
from alembic import op
import sqlalchemy as sa
${imports if imports else ""}
# revision identifiers, used by Alembic.
revision = ${repr(up_revision)}
down_revision = ${repr(down_revision)}
branch_labels = ${repr(branch_labels)}
depends_on = ${repr(depends_on)}
def upgrade() -> None:
${upgrades if upgrades else "pass"}
def downgrade() -> None:
${downgrades if downgrades else "pass"}

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"""Initial migration
Revision ID: b122c3a69fc9
Revises:
Create Date: 2022-06-22 19:54:19.153320
"""
import sqlalchemy as sa
from alembic import op
# revision identifiers, used by Alembic.
revision = 'b122c3a69fc9'
down_revision = None
branch_labels = None
depends_on = None
def upgrade() -> None:
# ### commands auto generated by Alembic - please adjust! ###
op.create_table('actors',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('ap_id', sa.String(), nullable=False),
sa.Column('ap_actor', sa.JSON(), nullable=False),
sa.Column('ap_type', sa.String(), nullable=False),
sa.Column('handle', sa.String(), nullable=True),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_actors_ap_id'), 'actors', ['ap_id'], unique=True)
op.create_index(op.f('ix_actors_handle'), 'actors', ['handle'], unique=False)
op.create_index(op.f('ix_actors_id'), 'actors', ['id'], unique=False)
op.create_table('inbox',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('actor_id', sa.Integer(), nullable=False),
sa.Column('server', sa.String(), nullable=False),
sa.Column('is_hidden_from_stream', sa.Boolean(), nullable=False),
sa.Column('ap_actor_id', sa.String(), nullable=False),
sa.Column('ap_type', sa.String(), nullable=False),
sa.Column('ap_id', sa.String(), nullable=False),
sa.Column('ap_context', sa.String(), nullable=True),
sa.Column('ap_published_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('ap_object', sa.JSON(), nullable=False),
sa.Column('activity_object_ap_id', sa.String(), nullable=True),
sa.Column('visibility', sa.Enum('PUBLIC', 'UNLISTED', 'DIRECT', name='visibilityenum'), nullable=False),
sa.Column('relates_to_inbox_object_id', sa.Integer(), nullable=True),
sa.Column('relates_to_outbox_object_id', sa.Integer(), nullable=True),
sa.Column('undone_by_inbox_object_id', sa.Integer(), nullable=True),
sa.Column('liked_via_outbox_object_ap_id', sa.String(), nullable=True),
sa.Column('announced_via_outbox_object_ap_id', sa.String(), nullable=True),
sa.Column('is_bookmarked', sa.Boolean(), nullable=False),
sa.Column('has_replies', sa.Boolean(), nullable=False),
sa.Column('og_meta', sa.JSON(), nullable=True),
sa.ForeignKeyConstraint(['actor_id'], ['actors.id'], ),
sa.ForeignKeyConstraint(['relates_to_inbox_object_id'], ['inbox.id'], ),
sa.ForeignKeyConstraint(['relates_to_outbox_object_id'], ['outbox.id'], ),
sa.ForeignKeyConstraint(['undone_by_inbox_object_id'], ['inbox.id'], ),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_inbox_ap_id'), 'inbox', ['ap_id'], unique=True)
op.create_index(op.f('ix_inbox_id'), 'inbox', ['id'], unique=False)
op.create_table('outbox',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('is_hidden_from_homepage', sa.Boolean(), nullable=False),
sa.Column('public_id', sa.String(), nullable=False),
sa.Column('ap_type', sa.String(), nullable=False),
sa.Column('ap_id', sa.String(), nullable=False),
sa.Column('ap_context', sa.String(), nullable=True),
sa.Column('ap_object', sa.JSON(), nullable=False),
sa.Column('activity_object_ap_id', sa.String(), nullable=True),
sa.Column('source', sa.String(), nullable=True),
sa.Column('ap_published_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('visibility', sa.Enum('PUBLIC', 'UNLISTED', 'DIRECT', name='visibilityenum'), nullable=False),
sa.Column('likes_count', sa.Integer(), nullable=False),
sa.Column('announces_count', sa.Integer(), nullable=False),
sa.Column('replies_count', sa.Integer(), nullable=False),
sa.Column('webmentions', sa.JSON(), nullable=True),
sa.Column('og_meta', sa.JSON(), nullable=True),
sa.Column('is_deleted', sa.Boolean(), nullable=False),
sa.Column('relates_to_inbox_object_id', sa.Integer(), nullable=True),
sa.Column('relates_to_outbox_object_id', sa.Integer(), nullable=True),
sa.Column('undone_by_outbox_object_id', sa.Integer(), nullable=True),
sa.ForeignKeyConstraint(['relates_to_inbox_object_id'], ['inbox.id'], ),
sa.ForeignKeyConstraint(['relates_to_outbox_object_id'], ['outbox.id'], ),
sa.ForeignKeyConstraint(['undone_by_outbox_object_id'], ['outbox.id'], ),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_outbox_ap_id'), 'outbox', ['ap_id'], unique=True)
op.create_index(op.f('ix_outbox_id'), 'outbox', ['id'], unique=False)
op.create_index(op.f('ix_outbox_public_id'), 'outbox', ['public_id'], unique=False)
op.create_table('followers',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('actor_id', sa.Integer(), nullable=False),
sa.Column('inbox_object_id', sa.Integer(), nullable=False),
sa.Column('ap_actor_id', sa.String(), nullable=False),
sa.ForeignKeyConstraint(['actor_id'], ['actors.id'], ),
sa.ForeignKeyConstraint(['inbox_object_id'], ['inbox.id'], ),
sa.PrimaryKeyConstraint('id'),
sa.UniqueConstraint('actor_id'),
sa.UniqueConstraint('ap_actor_id')
)
op.create_index(op.f('ix_followers_id'), 'followers', ['id'], unique=False)
op.create_table('following',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('updated_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('actor_id', sa.Integer(), nullable=False),
sa.Column('outbox_object_id', sa.Integer(), nullable=False),
sa.Column('ap_actor_id', sa.String(), nullable=False),
sa.ForeignKeyConstraint(['actor_id'], ['actors.id'], ),
sa.ForeignKeyConstraint(['outbox_object_id'], ['outbox.id'], ),
sa.PrimaryKeyConstraint('id'),
sa.UniqueConstraint('actor_id'),
sa.UniqueConstraint('ap_actor_id')
)
op.create_index(op.f('ix_following_id'), 'following', ['id'], unique=False)
op.create_table('notifications',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('notification_type', sa.Enum('NEW_FOLLOWER', 'UNFOLLOW', 'LIKE', 'UNDO_LIKE', 'ANNOUNCE', 'UNDO_ANNOUNCE', 'MENTION', name='notificationtype'), nullable=True),
sa.Column('is_new', sa.Boolean(), nullable=False),
sa.Column('actor_id', sa.Integer(), nullable=True),
sa.Column('outbox_object_id', sa.Integer(), nullable=True),
sa.Column('inbox_object_id', sa.Integer(), nullable=True),
sa.ForeignKeyConstraint(['actor_id'], ['actors.id'], ),
sa.ForeignKeyConstraint(['inbox_object_id'], ['inbox.id'], ),
sa.ForeignKeyConstraint(['outbox_object_id'], ['outbox.id'], ),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_notifications_id'), 'notifications', ['id'], unique=False)
op.create_table('outgoing_activities',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('created_at', sa.DateTime(timezone=True), nullable=False),
sa.Column('recipient', sa.String(), nullable=False),
sa.Column('outbox_object_id', sa.Integer(), nullable=False),
sa.Column('tries', sa.Integer(), nullable=False),
sa.Column('next_try', sa.DateTime(timezone=True), nullable=True),
sa.Column('last_try', sa.DateTime(timezone=True), nullable=True),
sa.Column('last_status_code', sa.Integer(), nullable=True),
sa.Column('last_response', sa.String(), nullable=True),
sa.Column('is_sent', sa.Boolean(), nullable=False),
sa.Column('is_errored', sa.Boolean(), nullable=False),
sa.Column('error', sa.String(), nullable=True),
sa.ForeignKeyConstraint(['outbox_object_id'], ['outbox.id'], ),
sa.PrimaryKeyConstraint('id')
)
op.create_index(op.f('ix_outgoing_activities_id'), 'outgoing_activities', ['id'], unique=False)
op.create_table('tagged_outbox_objects',
sa.Column('id', sa.Integer(), nullable=False),
sa.Column('outbox_object_id', sa.Integer(), nullable=False),
sa.Column('tag', sa.String(), nullable=False),
sa.ForeignKeyConstraint(['outbox_object_id'], ['outbox.id'], ),
sa.PrimaryKeyConstraint('id'),
sa.UniqueConstraint('outbox_object_id', 'tag', name='uix_tagged_object')
)
op.create_index(op.f('ix_tagged_outbox_objects_id'), 'tagged_outbox_objects', ['id'], unique=False)
op.create_index(op.f('ix_tagged_outbox_objects_tag'), 'tagged_outbox_objects', ['tag'], unique=False)
# ### end Alembic commands ###
def downgrade() -> None:
# ### commands auto generated by Alembic - please adjust! ###
op.drop_index(op.f('ix_tagged_outbox_objects_tag'), table_name='tagged_outbox_objects')
op.drop_index(op.f('ix_tagged_outbox_objects_id'), table_name='tagged_outbox_objects')
op.drop_table('tagged_outbox_objects')
op.drop_index(op.f('ix_outgoing_activities_id'), table_name='outgoing_activities')
op.drop_table('outgoing_activities')
op.drop_index(op.f('ix_notifications_id'), table_name='notifications')
op.drop_table('notifications')
op.drop_index(op.f('ix_following_id'), table_name='following')
op.drop_table('following')
op.drop_index(op.f('ix_followers_id'), table_name='followers')
op.drop_table('followers')
op.drop_index(op.f('ix_outbox_public_id'), table_name='outbox')
op.drop_index(op.f('ix_outbox_id'), table_name='outbox')
op.drop_index(op.f('ix_outbox_ap_id'), table_name='outbox')
op.drop_table('outbox')
op.drop_index(op.f('ix_inbox_id'), table_name='inbox')
op.drop_index(op.f('ix_inbox_ap_id'), table_name='inbox')
op.drop_table('inbox')
op.drop_index(op.f('ix_actors_id'), table_name='actors')
op.drop_index(op.f('ix_actors_handle'), table_name='actors')
op.drop_index(op.f('ix_actors_ap_id'), table_name='actors')
op.drop_table('actors')
# ### end Alembic commands ###

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app/activitypub.py 100644
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import enum
import json
import mimetypes
from typing import Any
import httpx
from app import config
from app.httpsig import auth
from app.key import get_pubkey_as_pem
RawObject = dict[str, Any]
AS_CTX = "https://www.w3.org/ns/activitystreams"
AS_PUBLIC = "https://www.w3.org/ns/activitystreams#Public"
ACTOR_TYPES = ["Application", "Group", "Organization", "Person", "Service"]
class VisibilityEnum(str, enum.Enum):
PUBLIC = "public"
UNLISTED = "unlisted"
DIRECT = "direct"
MICROBLOGPUB = {
"@context": [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
{
"Hashtag": "as:Hashtag",
"PropertyValue": "schema:PropertyValue",
"manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
"ostatus": "http://ostatus.org#",
"schema": "http://schema.org",
"sensitive": "as:sensitive",
"toot": "http://joinmastodon.org/ns#",
"totalItems": "as:totalItems",
"value": "schema:value",
"Emoji": "toot:Emoji",
},
]
}
DEFAULT_CTX = COLLECTION_CTX = [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
{
# AS ext
"Hashtag": "as:Hashtag",
"sensitive": "as:sensitive",
"manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
# toot
"toot": "http://joinmastodon.org/ns#",
# "featured": "toot:featured",
# schema
"schema": "http://schema.org#",
"PropertyValue": "schema:PropertyValue",
"value": "schema:value",
},
]
ME = {
"@context": DEFAULT_CTX,
"type": "Person",
"id": config.ID,
"following": config.BASE_URL + "/following",
"followers": config.BASE_URL + "/followers",
# "featured": ID + "/featured",
"inbox": config.BASE_URL + "/inbox",
"outbox": config.BASE_URL + "/outbox",
"preferredUsername": config.USERNAME,
"name": config.CONFIG.name,
"summary": config.CONFIG.summary,
"endpoints": {},
"url": config.ID,
"manuallyApprovesFollowers": False,
"attachment": [],
"icon": {
"mediaType": mimetypes.guess_type(config.CONFIG.icon_url)[0],
"type": "Image",
"url": config.CONFIG.icon_url,
},
"publicKey": {
"id": f"{config.ID}#main-key",
"owner": config.ID,
"publicKeyPem": get_pubkey_as_pem(),
},
"alsoKnownAs": [],
}
class NotAnObjectError(Exception):
def __init__(self, url: str, resp: httpx.Response | None = None) -> None:
message = f"{url} is not an AP activity"
super().__init__(message)
self.url = url
self.resp = resp
def fetch(url: str, params: dict[str, Any] | None = None) -> dict[str, Any]:
resp = httpx.get(
url,
headers={
"User-Agent": config.USER_AGENT,
"Accept": config.AP_CONTENT_TYPE,
},
params=params,
follow_redirects=True,
)
resp.raise_for_status()
try:
return resp.json()
except json.JSONDecodeError:
raise NotAnObjectError(url, resp)
def parse_collection( # noqa: C901
url: str | None = None,
payload: RawObject | None = None,
level: int = 0,
) -> list[RawObject]:
"""Resolve/fetch a `Collection`/`OrderedCollection`."""
if level > 3:
raise ValueError("recursion limit exceeded")
# Go through all the pages
out: list[RawObject] = []
if url:
payload = fetch(url)
if not payload:
raise ValueError("must at least prove a payload or an URL")
ap_type = payload.get("type")
if not ap_type:
raise ValueError(f"Missing type: {payload=}")
if level == 0 and ap_type not in ["Collection", "OrderedCollection"]:
raise ValueError(f"Unexpected type {ap_type}")
if payload["type"] in ["Collection", "OrderedCollection"]:
if "orderedItems" in payload:
return payload["orderedItems"]
if "items" in payload:
return payload["items"]
if "first" in payload:
if isinstance(payload["first"], str):
out.extend(parse_collection(url=payload["first"], level=level + 1))
else:
if "orderedItems" in payload["first"]:
out.extend(payload["first"]["orderedItems"])
if "items" in payload["first"]:
out.extend(payload["first"]["items"])
n = payload["first"].get("next")
if n:
out.extend(parse_collection(url=n, level=level + 1))
return out
while payload:
if ap_type in ["CollectionPage", "OrderedCollectionPage"]:
if "orderedItems" in payload:
out.extend(payload["orderedItems"])
if "items" in payload:
out.extend(payload["items"])
n = payload.get("next")
if n is None:
break
payload = fetch(n)
else:
raise ValueError("unexpected activity type {}".format(payload["type"]))
return out
def as_list(val: Any | list[Any]) -> list[Any]:
if isinstance(val, list):
return val
return [val]
def get_id(val: str | dict[str, Any]) -> str:
if isinstance(val, dict):
val = val["id"]
if not isinstance(val, str):
raise ValueError(f"Invalid ID type: {val}")
return val
def object_visibility(ap_activity: RawObject) -> VisibilityEnum:
to = as_list(ap_activity.get("to", []))
cc = as_list(ap_activity.get("cc", []))
if AS_PUBLIC in to:
return VisibilityEnum.PUBLIC
elif AS_PUBLIC in cc:
return VisibilityEnum.UNLISTED
else:
return VisibilityEnum.DIRECT
def get_actor_id(activity: RawObject) -> str:
if activity["type"] in ["Note", "Article", "Video"]:
attributed_to = as_list(activity["attributedTo"])
return get_id(attributed_to[0])
else:
return get_id(activity["actor"])
def wrap_object(activity: RawObject) -> RawObject:
return {
"@context": AS_CTX,
"actor": config.ID,
"to": activity.get("to", []),
"cc": activity.get("cc", []),
"id": activity["id"] + "/activity",
"object": remove_context(activity),
"published": activity["published"],
"type": "Create",
}
def wrap_object_if_needed(raw_object: RawObject) -> RawObject:
if raw_object["type"] in ["Note"]:
return wrap_object(raw_object)
return raw_object
def unwrap_activity(activity: RawObject) -> RawObject:
# FIXME(ts): other types to unwrap?
if activity["type"] == "Create":
unwrapped_object = activity["object"]
# Sanity check, ensure the wrapped object actor matches the activity
if get_actor_id(unwrapped_object) != get_actor_id(activity):
raise ValueError(
f"Unwrapped object actor does not match activity: {activity}"
)
return unwrapped_object
return activity
def remove_context(raw_object: RawObject) -> RawObject:
if "@context" not in raw_object:
return raw_object
a = dict(raw_object)
del a["@context"]
return a
def get(url: str, params: dict[str, Any] | None = None) -> dict[str, Any]:
resp = httpx.get(
url,
headers={"User-Agent": config.USER_AGENT, "Accept": config.AP_CONTENT_TYPE},
params=params,
follow_redirects=True,
auth=auth,
)
resp.raise_for_status()
return resp.json()
def post(url: str, payload: dict[str, Any]) -> httpx.Response:
resp = httpx.post(
url,
headers={
"User-Agent": config.USER_AGENT,
"Content-Type": config.AP_CONTENT_TYPE,
},
json=payload,
auth=auth,
)
resp.raise_for_status()
return resp

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import typing
from dataclasses import dataclass
from urllib.parse import urlparse
from sqlalchemy.orm import Session
from sqlalchemy.orm import joinedload
from app import activitypub as ap
if typing.TYPE_CHECKING:
from app.models import Actor as ActorModel
def _handle(raw_actor: ap.RawObject) -> str:
ap_id = ap.get_id(raw_actor["id"])
domain = urlparse(ap_id)
if not domain.hostname:
raise ValueError(f"Invalid actor ID {ap_id}")
return f'@{raw_actor["preferredUsername"]}@{domain.hostname}' # type: ignore
class Actor:
@property
def ap_actor(self) -> ap.RawObject:
raise NotImplementedError()
@property
def ap_id(self) -> str:
return ap.get_id(self.ap_actor["id"])
@property
def name(self) -> str | None:
return self.ap_actor.get("name")
@property
def summary(self) -> str | None:
return self.ap_actor.get("summary")
@property
def url(self) -> str | None:
return self.ap_actor.get("url") or self.ap_actor["id"]
@property
def preferred_username(self) -> str:
return self.ap_actor["preferredUsername"]
@property
def handle(self) -> str:
return _handle(self.ap_actor)
@property
def ap_type(self) -> str:
raise NotImplementedError()
@property
def inbox_url(self) -> str:
return self.ap_actor["inbox"]
@property
def shared_inbox_url(self) -> str | None:
return self.ap_actor.get("endpoints", {}).get("sharedInbox")
@property
def icon_url(self) -> str | None:
return self.ap_actor.get("icon", {}).get("url")
@property
def icon_media_type(self) -> str | None:
return self.ap_actor.get("icon", {}).get("mediaType")
@property
def public_key_as_pem(self) -> str:
return self.ap_actor["publicKey"]["publicKeyPem"]
@property
def public_key_id(self) -> str:
return self.ap_actor["publicKey"]["id"]
class RemoteActor(Actor):
def __init__(self, ap_actor: ap.RawObject) -> None:
if (ap_type := ap_actor.get("type")) not in ap.ACTOR_TYPES:
raise ValueError(f"Unexpected actor type: {ap_type}")
self._ap_actor = ap_actor
self._ap_type = ap_type
@property
def ap_actor(self) -> ap.RawObject:
return self._ap_actor
@property
def ap_type(self) -> str:
return self._ap_type
@property
def is_from_db(self) -> bool:
return False
LOCAL_ACTOR = RemoteActor(ap_actor=ap.ME)
def save_actor(db: Session, ap_actor: ap.RawObject) -> "ActorModel":
from app import models
if ap_type := ap_actor.get("type") not in ap.ACTOR_TYPES:
raise ValueError(f"Invalid type {ap_type} for actor {ap_actor}")
actor = models.Actor(
ap_id=ap_actor["id"],
ap_actor=ap_actor,
ap_type=ap_actor["type"],
handle=_handle(ap_actor),
)
db.add(actor)
db.commit()
db.refresh(actor)
return actor
def fetch_actor(db: Session, actor_id: str) -> "ActorModel":
from app import models
existing_actor = (
db.query(models.Actor).filter(models.Actor.ap_id == actor_id).one_or_none()
)
if existing_actor:
return existing_actor
ap_actor = ap.get(actor_id)
return save_actor(db, ap_actor)
@dataclass
class ActorMetadata:
ap_actor_id: str
is_following: bool
is_follower: bool
is_follow_request_sent: bool
outbox_follow_ap_id: str | None
inbox_follow_ap_id: str | None
ActorsMetadata = dict[str, ActorMetadata]
def get_actors_metadata(
db: Session,
actors: list["ActorModel"],
) -> ActorsMetadata:
from app import models
ap_actor_ids = [actor.ap_id for actor in actors]
followers = {
follower.ap_actor_id: follower.inbox_object.ap_id
for follower in db.query(models.Follower)
.filter(models.Follower.ap_actor_id.in_(ap_actor_ids))
.options(joinedload(models.Follower.inbox_object))
.all()
}
following = {
following.ap_actor_id
for following in db.query(models.Following.ap_actor_id)
.filter(models.Following.ap_actor_id.in_(ap_actor_ids))
.all()
}
sent_follow_requests = {
follow_req.ap_object["object"]: follow_req.ap_id
for follow_req in db.query(
models.OutboxObject.ap_object, models.OutboxObject.ap_id
)
.filter(
models.OutboxObject.ap_type == "Follow",
models.OutboxObject.undone_by_outbox_object_id.is_(None),
)
.all()
}
idx: ActorsMetadata = {}
for actor in actors:
idx[actor.ap_id] = ActorMetadata(
ap_actor_id=actor.ap_id,
is_following=actor.ap_id in following,
is_follower=actor.ap_id in followers,
is_follow_request_sent=actor.ap_id in sent_follow_requests,
outbox_follow_ap_id=sent_follow_requests.get(actor.ap_id),
inbox_follow_ap_id=followers.get(actor.ap_id),
)
return idx

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app/admin.py 100644
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from fastapi import APIRouter
from fastapi import Cookie
from fastapi import Depends
from fastapi import Form
from fastapi import Request
from fastapi import UploadFile
from fastapi.exceptions import HTTPException
from fastapi.responses import RedirectResponse
from sqlalchemy.orm import Session
from sqlalchemy.orm import joinedload
from app import activitypub as ap
from app import boxes
from app import models
from app import templates
from app.actor import get_actors_metadata
from app.boxes import get_inbox_object_by_ap_id
from app.boxes import send_follow
from app.config import generate_csrf_token
from app.config import session_serializer
from app.config import verify_csrf_token
from app.config import verify_password
from app.database import get_db
from app.lookup import lookup
def user_session_or_redirect(
request: Request,
session: str | None = Cookie(default=None),
) -> None:
_RedirectToLoginPage = HTTPException(
status_code=302,
headers={"Location": request.url_for("login")},
)
if not session:
raise _RedirectToLoginPage
try:
loaded_session = session_serializer.loads(session, max_age=3600 * 12)
except Exception:
raise _RedirectToLoginPage
if not loaded_session.get("is_logged_in"):
raise _RedirectToLoginPage
return None
router = APIRouter(
dependencies=[Depends(user_session_or_redirect)],
)
unauthenticated_router = APIRouter()
@router.get("/")
def admin_index(
request: Request,
db: Session = Depends(get_db),
) -> templates.TemplateResponse:
return templates.render_template(db, request, "index.html", {"request": request})
@router.get("/lookup")
def get_lookup(
request: Request,
query: str | None = None,
db: Session = Depends(get_db),
) -> templates.TemplateResponse:
ap_object = None
actors_metadata = {}
if query:
ap_object = lookup(db, query)
if ap_object.ap_type in ap.ACTOR_TYPES:
actors_metadata = get_actors_metadata(db, [ap_object])
else:
actors_metadata = get_actors_metadata(db, [ap_object.actor])
print(ap_object)
return templates.render_template(
db,
request,
"lookup.html",
{
"query": query,
"ap_object": ap_object,
"actors_metadata": actors_metadata,
},
)
@router.get("/new")
def admin_new(
request: Request,
query: str | None = None,
db: Session = Depends(get_db),
) -> templates.TemplateResponse:
return templates.render_template(
db,
request,
"admin_new.html",
{},
)
@router.get("/stream")
def stream(
request: Request,
db: Session = Depends(get_db),
) -> templates.TemplateResponse:
stream = (
db.query(models.InboxObject)
.filter(
models.InboxObject.ap_type.in_(["Note", "Article", "Video", "Announce"]),
models.InboxObject.is_hidden_from_stream.is_(False),
models.InboxObject.undone_by_inbox_object_id.is_(None),
)
.options(
# joinedload(models.InboxObject.relates_to_inbox_object),
joinedload(models.InboxObject.relates_to_outbox_object),
)
.order_by(models.InboxObject.ap_published_at.desc())
.limit(20)
.all()
)
return templates.render_template(
db,
request,
"admin_stream.html",
{
"stream": stream,
},
)
@router.get("/notifications")
def get_notifications(
request: Request, db: Session = Depends(get_db)
) -> templates.TemplateResponse:
notifications = (
db.query(models.Notification)
.options(
joinedload(models.Notification.actor),
joinedload(models.Notification.inbox_object),
joinedload(models.Notification.outbox_object),
)
.order_by(models.Notification.created_at.desc())
.all()
)
actors_metadata = get_actors_metadata(
db, [notif.actor for notif in notifications if notif.actor]
)
for notif in notifications:
notif.is_new = False
db.commit()
return templates.render_template(
db,
request,
"notifications.html",
{
"notifications": notifications,
"actors_metadata": actors_metadata,
},
)
@router.post("/actions/follow")
def admin_actions_follow(
request: Request,
ap_actor_id: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
print(f"Following {ap_actor_id}")
send_follow(db, ap_actor_id)
return RedirectResponse(redirect_url, status_code=302)
@router.post("/actions/like")
def admin_actions_like(
request: Request,
ap_object_id: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
boxes.send_like(db, ap_object_id)
return RedirectResponse(redirect_url, status_code=302)
@router.post("/actions/undo")
def admin_actions_undo(
request: Request,
ap_object_id: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
boxes.send_undo(db, ap_object_id)
return RedirectResponse(redirect_url, status_code=302)
@router.post("/actions/announce")
def admin_actions_announce(
request: Request,
ap_object_id: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
boxes.send_announce(db, ap_object_id)
return RedirectResponse(redirect_url, status_code=302)
@router.post("/actions/bookmark")
def admin_actions_bookmark(
request: Request,
ap_object_id: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
inbox_object = get_inbox_object_by_ap_id(db, ap_object_id)
if not inbox_object:
raise ValueError("Should never happen")
inbox_object.is_bookmarked = True
db.commit()
return RedirectResponse(redirect_url, status_code=302)
@router.post("/actions/new")
async def admin_actions_new(
request: Request,
files: list[UploadFile],
content: str = Form(),
redirect_url: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
db: Session = Depends(get_db),
) -> RedirectResponse:
# XXX: for some reason, no files restuls in an empty single file
if len(files) >= 1 and files[0].filename:
print("Got files")
public_id = boxes.send_create(db, content)
return RedirectResponse(
request.url_for("outbox_by_public_id", public_id=public_id),
status_code=302,
)
@unauthenticated_router.get("/login")
def login(
request: Request,
db: Session = Depends(get_db),
) -> templates.TemplateResponse:
return templates.render_template(
db,
request,
"login.html",
{"csrf_token": generate_csrf_token()},
)
@unauthenticated_router.post("/login")
def login_validation(
request: Request,
password: str = Form(),
csrf_check: None = Depends(verify_csrf_token),
) -> RedirectResponse:
if not verify_password(password):
raise HTTPException(status_code=401)
resp = RedirectResponse("/admin", status_code=302)
resp.set_cookie("session", session_serializer.dumps({"is_logged_in": True})) # type: ignore # noqa: E501
return resp
@router.get("/logout")
def logout(
request: Request,
) -> RedirectResponse:
resp = RedirectResponse(request.url_for("index"), status_code=302)
resp.set_cookie("session", session_serializer.dumps({"is_logged_in": False})) # type: ignore # noqa: E501
return resp

183
app/ap_object.py 100644
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import hashlib
from datetime import datetime
from typing import Any
import pydantic
from dateutil.parser import isoparse
from markdown import markdown
from app import activitypub as ap
from app import opengraph
from app.actor import LOCAL_ACTOR
from app.actor import Actor
from app.actor import RemoteActor
class Object:
@property
def is_from_db(self) -> bool:
return False
@property
def ap_type(self) -> str:
return self.ap_object["type"]
@property
def ap_object(self) -> ap.RawObject:
raise NotImplementedError
@property
def ap_id(self) -> str:
return ap.get_id(self.ap_object["id"])
@property
def ap_actor_id(self) -> str:
return ap.get_actor_id(self.ap_object)
@property
def ap_published_at(self) -> datetime | None:
# TODO: default to None? or now()?
if "published" in self.ap_object:
return isoparse(self.ap_object["published"])
elif "created" in self.ap_object:
return isoparse(self.ap_object["created"])
return None
@property
def actor(self) -> Actor:
raise NotImplementedError()
@property
def visibility(self) -> ap.VisibilityEnum:
return ap.object_visibility(self.ap_object)
@property
def context(self) -> str | None:
return self.ap_object.get("context")
@property
def sensitive(self) -> bool:
return self.ap_object.get("sensitive", False)
@property
def attachments(self) -> list["Attachment"]:
attachments = [
Attachment.parse_obj(obj) for obj in self.ap_object.get("attachment", [])
]
# Also add any video Link (for PeerTube compat)
if self.ap_type == "Video":
for link in ap.as_list(self.ap_object.get("url", [])):
if (isinstance(link, dict)) and link.get("type") == "Link":
if link.get("mediaType", "").startswith("video"):
attachments.append(
Attachment(
type="Video",
mediaType=link["mediaType"],
url=link["href"],
)
)
break
return attachments
@property
def url(self) -> str | None:
obj_url = self.ap_object.get("url")
if isinstance(obj_url, str):
return obj_url
elif obj_url:
for u in ap.as_list(obj_url):
if u["mediaType"] == "text/html":
return u["href"]
return None
@property
def content(self) -> str | None:
content = self.ap_object.get("content")
if not content:
return None
# PeerTube returns the content as markdown
if self.ap_object.get("mediaType") == "text/markdown":
return markdown(content, extensions=["mdx_linkify"])
return content
@property
def permalink_id(self) -> str:
return (
"permalink-"
+ hashlib.md5(
self.ap_id.encode(),
usedforsecurity=False,
).hexdigest()
)
@property
def activity_object_ap_id(self) -> str | None:
if "object" in self.ap_object:
return ap.get_id(self.ap_object["object"])
return None
@property
def in_reply_to(self) -> str | None:
return self.ap_object.get("inReplyTo")
def _to_camel(string: str) -> str:
cased = "".join(word.capitalize() for word in string.split("_"))
return cased[0:1].lower() + cased[1:]
class BaseModel(pydantic.BaseModel):
class Config:
alias_generator = _to_camel
class Attachment(BaseModel):
type: str
media_type: str
name: str | None
url: str
class RemoteObject(Object):
def __init__(self, raw_object: ap.RawObject, actor: Actor | None = None):
self._raw_object = raw_object
self._actor: Actor
# Pre-fetch the actor
actor_id = ap.get_actor_id(raw_object)
if actor_id == LOCAL_ACTOR.ap_id:
self._actor = LOCAL_ACTOR
elif actor:
if actor.ap_id != actor_id:
raise ValueError(
f"Invalid actor, got {actor.ap_id}, " f"expected {actor_id}"
)
self._actor = actor
else:
self._actor = RemoteActor(
ap_actor=ap.fetch(ap.get_actor_id(raw_object)),
)
self._og_meta = None
if self.ap_type == "Note":
self._og_meta = opengraph.og_meta_from_note(self._raw_object)
@property
def og_meta(self) -> list[dict[str, Any]] | None:
if self._og_meta:
return [og_meta.dict() for og_meta in self._og_meta]
return None
@property
def ap_object(self) -> ap.RawObject:
return self._raw_object
@property
def actor(self) -> Actor:
return self._actor

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app/boxes.py 100644
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"""Actions related to the AP inbox/outbox."""
import uuid
from urllib.parse import urlparse
import httpx
from dateutil.parser import isoparse
from loguru import logger
from sqlalchemy.exc import IntegrityError
from sqlalchemy.orm import Session
from sqlalchemy.orm import joinedload
from app import activitypub as ap
from app import config
from app import models
from app.actor import LOCAL_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 ID
from app.database import now
from app.process_outgoing_activities import new_outgoing_activity
from app.source import markdownify
def allocate_outbox_id() -> str:
return uuid.uuid4().hex
def outbox_object_id(outbox_id) -> str:
return f"{BASE_URL}/o/{outbox_id}"
def save_outbox_object(
db: Session,
public_id: str,
raw_object: ap.RawObject,
relates_to_inbox_object_id: int | None = None,
relates_to_outbox_object_id: int | None = None,
source: str | None = None,
) -> models.OutboxObject:
ra = RemoteObject(raw_object)
outbox_object = models.OutboxObject(
public_id=public_id,
ap_type=ra.ap_type,
ap_id=ra.ap_id,
ap_context=ra.context,
ap_object=ra.ap_object,
visibility=ra.visibility,
og_meta=ra.og_meta,
relates_to_inbox_object_id=relates_to_inbox_object_id,
relates_to_outbox_object_id=relates_to_outbox_object_id,
activity_object_ap_id=ra.activity_object_ap_id,
is_hidden_from_homepage=True if ra.in_reply_to else False,
)
db.add(outbox_object)
db.commit()
db.refresh(outbox_object)
return outbox_object
def send_like(db: Session, ap_object_id: str) -> None:
inbox_object = get_inbox_object_by_ap_id(db, ap_object_id)
if not inbox_object:
raise ValueError(f"{ap_object_id} not found in the inbox")
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 = save_outbox_object(
db, 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
db.commit()
new_outgoing_activity(db, inbox_object.actor.inbox_url, outbox_object.id)
def send_announce(db: Session, ap_object_id: str) -> None:
inbox_object = get_inbox_object_by_ap_id(db, ap_object_id)
if not inbox_object:
raise ValueError(f"{ap_object_id} not found in the inbox")
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 = save_outbox_object(
db, 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
db.commit()
recipients = _compute_recipients(db, announce)
for rcp in recipients:
new_outgoing_activity(db, rcp, outbox_object.id)
def send_follow(db: Session, ap_actor_id: str) -> None:
actor = fetch_actor(db, 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 = save_outbox_object(db, follow_id, follow)
if not outbox_object.id:
raise ValueError("Should never happen")
new_outgoing_activity(db, actor.inbox_url, outbox_object.id)
def send_undo(db: Session, ap_object_id: str) -> None:
outbox_object_to_undo = get_outbox_object_by_ap_id(db, 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 = save_outbox_object(
db,
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 = fetch_actor(db, outbox_object_to_undo.activity_object_ap_id)
new_outgoing_activity(
db,
followed_actor.inbox_url,
outbox_object.id,
)
# Also remove the follow from the following collection
db.query(models.Following).filter(
models.Following.ap_actor_id == followed_actor.ap_id
).delete()
db.commit()
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 = get_inbox_object_by_ap_id(db, 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
new_outgoing_activity(
db,
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 = get_inbox_object_by_ap_id(db, 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 = _compute_recipients(db, outbox_object.ap_object)
for rcp in recipients:
new_outgoing_activity(db, rcp, outbox_object.id)
else:
raise ValueError("Should never happen")
def send_create(db: Session, source: str) -> str:
note_id = allocate_outbox_id()
published = now().replace(microsecond=0).isoformat().replace("+00:00", "Z")
context = f"{ID}/contexts/" + uuid.uuid4().hex
content, tags = markdownify(db, source)
note = {
"@context": ap.AS_CTX,
"type": "Note",
"id": outbox_object_id(note_id),
"attributedTo": ID,
"content": content,
"to": [ap.AS_PUBLIC],
"cc": [f"{BASE_URL}/followers"],
"published": published,
"context": context,
"conversation": context,
"url": outbox_object_id(note_id),
"tag": tags,
"summary": None,
"inReplyTo": None,
"sensitive": False,
}
outbox_object = save_outbox_object(db, note_id, note, source=source)
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.add(tagged_object)
db.commit()
recipients = _compute_recipients(db, note)
for rcp in recipients:
new_outgoing_activity(db, rcp, outbox_object.id)
return note_id
def _compute_recipients(db: Session, 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()
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 raw_actor in fetch_collection(db, r):
actor = RemoteActor(raw_actor)
recipients.add(actor.shared_inbox_url or actor.inbox_url)
continue
# Is it a known actor?
known_actor = (
db.query(models.Actor).filter(models.Actor.ap_id == r).one_or_none()
)
if known_actor:
recipients.add(known_actor.shared_inbox_url or actor.inbox_url)
continue
# Fetch the object
raw_object = ap.fetch(r)
if raw_object.get("type") in ap.ACTOR_TYPES:
saved_actor = save_actor(db, raw_object)
recipients.add(saved_actor.shared_inbox_url or saved_actor.inbox_url)
else:
# Assume it's a collection of actors
for raw_actor in ap.parse_collection(payload=raw_object):
actor = RemoteActor(raw_actor)
recipients.add(actor.shared_inbox_url or actor.inbox_url)
return recipients
def get_inbox_object_by_ap_id(db: Session, ap_id: str) -> models.InboxObject | None:
return (
db.query(models.InboxObject)
.filter(models.InboxObject.ap_id == ap_id)
.one_or_none()
)
def get_outbox_object_by_ap_id(db: Session, ap_id: str) -> models.OutboxObject | None:
return (
db.query(models.OutboxObject)
.filter(models.OutboxObject.ap_id == ap_id)
.one_or_none()
)
def _handle_delete_activity(
db: Session,
from_actor: models.Actor,
ap_object_to_delete: models.InboxObject,
) -> None:
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
# TODO(ts): do we need to delete related activities? should we keep
# bookmarked objects with a deleted flag?
logger.info(f"Deleting {ap_object_to_delete.ap_type}/{ap_object_to_delete.ap_id}")
db.delete(ap_object_to_delete)
db.flush()
def _handle_follow_follow_activity(
db: Session,
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.add(follower)
db.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 = save_outbox_object(db, reply_id, reply)
if not outbox_activity.id:
raise ValueError("Should never happen")
new_outgoing_activity(db, from_actor.inbox_url, outbox_activity.id)
notif = models.Notification(
notification_type=models.NotificationType.NEW_FOLLOWER,
actor_id=from_actor.id,
)
db.add(notif)
def _handle_undo_activity(
db: Session,
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
if ap_activity_to_undo.ap_type == "Follow":
logger.info(f"Undo follow from {from_actor.ap_id}")
db.query(models.Follower).filter(
models.Follower.inbox_object_id == ap_activity_to_undo.id
).delete()
notif = models.Notification(
notification_type=models.NotificationType.UNFOLLOW,
actor_id=from_actor.id,
)
db.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 = get_outbox_object_by_ap_id(
db,
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.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 = get_outbox_object_by_ap_id(
db, 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.add(notif)
# FIXME(ts): what to do with ap_activity_to_undo? flag? delete?
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
def _handle_create_activity(
db: Session,
from_actor: models.Actor,
created_object: models.InboxObject,
) -> None:
logger.info("Processing Create activity")
tags = created_object.ap_object.get("tag")
if not tags:
logger.info("No tags to process")
return None
if not isinstance(tags, list):
logger.info(f"Invalid tags: {tags}")
return None
for tag in tags:
if tag.get("name") == LOCAL_ACTOR.handle or tag.get("href") == LOCAL_ACTOR.url:
notif = models.Notification(
notification_type=models.NotificationType.MENTION,
actor_id=from_actor.id,
inbox_object_id=created_object.id,
)
db.add(notif)
def save_to_inbox(db: Session, raw_object: ap.RawObject) -> None:
try:
actor = fetch_actor(db, raw_object["actor"])
except httpx.HTTPStatusError:
logger.exception("Failed to fetch actor")
# XXX: Delete 410 when we never seen the actor
return
ap_published_at = now()
if "published" in raw_object:
ap_published_at = isoparse(raw_object["published"])
ra = RemoteObject(ap.unwrap_activity(raw_object), actor=actor)
relates_to_inbox_object: models.InboxObject | None = None
relates_to_outbox_object: models.OutboxObject | None = None
if ra.activity_object_ap_id:
if ra.activity_object_ap_id.startswith(BASE_URL):
relates_to_outbox_object = get_outbox_object_by_ap_id(
db,
ra.activity_object_ap_id,
)
else:
relates_to_inbox_object = get_inbox_object_by_ap_id(
db,
ra.activity_object_ap_id,
)
inbox_object = models.InboxObject(
server=urlparse(ra.ap_id).netloc,
actor_id=actor.id,
ap_actor_id=actor.ap_id,
ap_type=ra.ap_type,
ap_id=ra.ap_id,
ap_context=ra.context,
ap_published_at=ap_published_at,
ap_object=ra.ap_object,
visibility=ra.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=ra.activity_object_ap_id,
# Hide replies from the stream
is_hidden_from_stream=True if ra.in_reply_to else False,
)
db.add(inbox_object)
db.flush()
db.refresh(inbox_object)
if ra.ap_type == "Create":
_handle_create_activity(db, actor, inbox_object)
elif ra.ap_type == "Update":
pass
elif ra.ap_type == "Delete":
if relates_to_inbox_object:
_handle_delete_activity(db, actor, relates_to_inbox_object)
else:
# TODO(ts): handle delete actor
logger.info(
f"Received a Delete for an unknown object: {ra.activity_object_ap_id}"
)
elif ra.ap_type == "Follow":
_handle_follow_follow_activity(db, actor, inbox_object)
elif ra.ap_type == "Undo":
if relates_to_inbox_object:
_handle_undo_activity(db, actor, inbox_object, relates_to_inbox_object)
else:
logger.info("Received Undo for an unknown activity")
elif ra.ap_type in ["Accept", "Reject"]:
if not relates_to_outbox_object:
logger.info(
f"Received {raw_object['type']} for an unknown activity: "
f"{ra.activity_object_ap_id}"
)
else:
if relates_to_outbox_object.ap_type == "Follow":
following = models.Following(
actor_id=actor.id,
outbox_object_id=relates_to_outbox_object.id,
ap_actor_id=actor.ap_id,
)
db.add(following)
else:
logger.info(
"Received an Accept for an unsupported activity: "
f"{relates_to_outbox_object.ap_type}"
)
elif ra.ap_type == "Like":
if not relates_to_outbox_object:
logger.info(
f"Received a like for an unknown activity: {ra.activity_object_ap_id}"
)
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=inbox_object.id,
)
db.add(notif)
elif raw_object["type"] == "Announce":
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=inbox_object.id,
)
db.add(notif)
else:
# This is announce for a maybe unknown object
if relates_to_inbox_object:
logger.info("Nothing to do, we already know about this object")
else:
# Save it as an inbox object
if not ra.activity_object_ap_id:
raise ValueError("Should never happen")
announced_raw_object = ap.fetch(ra.activity_object_ap_id)
announced_actor = fetch_actor(db, ap.get_actor_id(announced_raw_object))
announced_object = RemoteObject(announced_raw_object, announced_actor)
announced_inbox_object = models.InboxObject(
server=urlparse(announced_object.ap_id).netloc,
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.context,
ap_published_at=announced_object.ap_published_at,
ap_object=announced_object.ap_object,
visibility=announced_object.visibility,
is_hidden_from_stream=True,
)
db.add(announced_inbox_object)
db.flush()
inbox_object.relates_to_inbox_object_id = announced_inbox_object.id
elif ra.ap_type in ["Like", "Announce"]:
if not relates_to_outbox_object:
logger.info(
f"Received {ra.ap_type} for an unknown activity: "
f"{ra.activity_object_ap_id}"
)
else:
if ra.ap_type == "Like":
# TODO(ts): notification
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=inbox_object.id,
)
db.add(notif)
elif raw_object["type"] == "Announce":
# TODO(ts): notification
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=inbox_object.id,
)
db.add(notif)
else:
raise ValueError("Should never happpen")
else:
logger.warning(f"Received an unknown {inbox_object.ap_type} object")
db.commit()
def public_outbox_objects_count(db: Session) -> int:
return (
db.query(models.OutboxObject)
.filter(
models.OutboxObject.visibility == ap.VisibilityEnum.PUBLIC,
models.OutboxObject.is_deleted.is_(False),
)
.count()
)
def fetch_collection(db: Session, url: str) -> list[ap.RawObject]:
if url.startswith(config.BASE_URL):
if url == config.BASE_URL + "/followers":
q = db.query(models.Follower).options(joinedload(models.Follower.actor))
return [follower.actor.ap_actor for follower in q.all()]
else:
raise ValueError(f"internal collection for {url}) not supported")
return ap.parse_collection(url)

93
app/config.py 100644
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@ -0,0 +1,93 @@
import os
from pathlib import Path
import bcrypt
import pydantic
import tomli
from fastapi import Form
from fastapi import HTTPException
from fastapi import Request
from itsdangerous import TimedSerializer
from itsdangerous import TimestampSigner
ROOT_DIR = Path().parent.resolve()
_CONFIG_FILE = os.getenv("MICROBLOGPUB_CONFIG_FILE", "me.toml")
VERSION = "2.0"
USER_AGENT = f"microblogpub/{VERSION}"
AP_CONTENT_TYPE = "application/activity+json"
class Config(pydantic.BaseModel):
domain: str
username: str
admin_password: bytes
name: str
summary: str
https: bool
icon_url: str
secret: str
debug: bool = False
# Config items to make tests easier
sqlalchemy_database_url: str | None = None
key_path: str | None = None
def load_config() -> Config:
try:
return Config.parse_obj(
tomli.loads((ROOT_DIR / "data" / _CONFIG_FILE).read_text())
)
except FileNotFoundError:
raise ValueError("Please run the configuration wizard")
def is_activitypub_requested(req: Request) -> bool:
accept_value = req.headers.get("accept")
if not accept_value:
return False
for val in {
"application/ld+json",
"application/activity+json",
}:
if accept_value.startswith(val):
return True
return False
def verify_password(pwd: str) -> bool:
return bcrypt.checkpw(pwd.encode(), CONFIG.admin_password)
CONFIG = load_config()
DOMAIN = CONFIG.domain
_SCHEME = "https" if CONFIG.https else "http"
ID = f"{_SCHEME}://{DOMAIN}"
USERNAME = CONFIG.username
BASE_URL = ID
DEBUG = CONFIG.debug
DB_PATH = ROOT_DIR / "data" / "microblogpub.db"
SQLALCHEMY_DATABASE_URL = CONFIG.sqlalchemy_database_url or f"sqlite:///{DB_PATH}"
KEY_PATH = (
(ROOT_DIR / CONFIG.key_path) if CONFIG.key_path else ROOT_DIR / "data" / "key.pem"
)
session_serializer = TimedSerializer(CONFIG.secret, salt="microblogpub.login")
csrf_signer = TimestampSigner(
os.urandom(16).hex(),
salt=os.urandom(16).hex(),
)
def generate_csrf_token() -> str:
return csrf_signer.sign(os.urandom(16).hex()).decode()
def verify_csrf_token(csrf_token: str = Form()) -> None:
if not csrf_signer.validate(csrf_token, max_age=600):
raise HTTPException(status_code=403, detail="CSRF error")
return None

29
app/database.py 100644
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@ -0,0 +1,29 @@
import datetime
from typing import Any
from typing import Generator
from sqlalchemy import create_engine
from sqlalchemy.ext.declarative import declarative_base
from sqlalchemy.orm import Session
from sqlalchemy.orm import sessionmaker
from app.config import SQLALCHEMY_DATABASE_URL
engine = create_engine(
SQLALCHEMY_DATABASE_URL, connect_args={"check_same_thread": False}
)
SessionLocal = sessionmaker(autocommit=False, autoflush=False, bind=engine)
Base: Any = declarative_base()
def now() -> datetime.datetime:
return datetime.datetime.now(datetime.timezone.utc)
def get_db() -> Generator[Session, None, None]:
db = SessionLocal()
try:
yield db
finally:
db.close()

27
app/highlight.py 100644
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@ -0,0 +1,27 @@
from functools import lru_cache
from bs4 import BeautifulSoup # type: ignore
from pygments import highlight as phighlight # type: ignore
from pygments.formatters import HtmlFormatter # type: ignore
from pygments.lexers import guess_lexer # type: ignore
_FORMATTER = HtmlFormatter(style="vim")
HIGHLIGHT_CSS = _FORMATTER.get_style_defs()
@lru_cache(256)
def highlight(html: str) -> str:
soup = BeautifulSoup(html, "html5lib")
for code in soup.find_all("code"):
if not code.parent.name == "pre":
continue
lexer = guess_lexer(code.text)
tag = BeautifulSoup(
phighlight(code.text, lexer, _FORMATTER), "html5lib"
).body.next
pre = code.parent
pre.replaceWith(tag)
out = soup.body
out.name = "div"
return str(out)

182
app/httpsig.py 100644
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@ -0,0 +1,182 @@
"""Implements HTTP signature for Flask requests.
Mastodon instances won't accept requests that are not signed using this scheme.
"""
import base64
import hashlib
import typing
from dataclasses import dataclass
from datetime import datetime
from functools import lru_cache
from typing import Any
from typing import Dict
from typing import Optional
import fastapi
import httpx
from Crypto.Hash import SHA256
from Crypto.Signature import PKCS1_v1_5
from loguru import logger
from app import config
from app.key import Key
from app.key import get_key
def _build_signed_string(
signed_headers: str, method: str, path: str, headers: Any, body_digest: str | None
) -> str:
out = []
for signed_header in signed_headers.split(" "):
if signed_header == "(request-target)":
out.append("(request-target): " + method.lower() + " " + path)
elif signed_header == "digest" and body_digest:
out.append("digest: " + body_digest)
else:
out.append(signed_header + ": " + headers[signed_header])
return "\n".join(out)
def _parse_sig_header(val: Optional[str]) -> Optional[Dict[str, str]]:
if not val:
return None
out = {}
for data in val.split(","):
k, v = data.split("=", 1)
out[k] = v[1 : len(v) - 1] # noqa: black conflict
return out
def _verify_h(signed_string, signature, pubkey):
signer = PKCS1_v1_5.new(pubkey)
digest = SHA256.new()
digest.update(signed_string.encode("utf-8"))
return signer.verify(digest, signature)
def _body_digest(body: bytes) -> str:
h = hashlib.new("sha256")
h.update(body) # type: ignore
return "SHA-256=" + base64.b64encode(h.digest()).decode("utf-8")
@lru_cache(32)
def _get_public_key(key_id: str) -> Key:
from app import activitypub as ap
actor = ap.fetch(key_id)
if actor["type"] == "Key":
# The Key is not embedded in the Person
k = Key(actor["owner"], actor["id"])
k.load_pub(actor["publicKeyPem"])
else:
k = Key(actor["id"], actor["publicKey"]["id"])
k.load_pub(actor["publicKey"]["publicKeyPem"])
# Ensure the right key was fetch
if key_id != k.key_id():
raise ValueError(
f"failed to fetch requested key {key_id}: got {actor['publicKey']['id']}"
)
return k
@dataclass(frozen=True)
class HTTPSigInfo:
has_valid_signature: bool
signed_by_ap_actor_id: str | None = None
async def httpsig_checker(
request: fastapi.Request,
) -> HTTPSigInfo:
body = await request.body()
hsig = _parse_sig_header(request.headers.get("Signature"))
if not hsig:
logger.info("No HTTP signature found")
return HTTPSigInfo(has_valid_signature=False)
logger.debug(f"hsig={hsig}")
signed_string = _build_signed_string(
hsig["headers"],
request.method,
request.url.path,
request.headers,
_body_digest(body) if body else None,
)
try:
k = _get_public_key(hsig["keyId"])
except Exception:
logger.exception(f'Failed to fetch HTTP sig key {hsig["keyId"]}')
return HTTPSigInfo(has_valid_signature=False)
httpsig_info = HTTPSigInfo(
has_valid_signature=_verify_h(
signed_string, base64.b64decode(hsig["signature"]), k.pubkey
),
signed_by_ap_actor_id=k.owner,
)
logger.info(f"Valid HTTP signature for {httpsig_info.signed_by_ap_actor_id}")
return httpsig_info
async def enforce_httpsig(
request: fastapi.Request,
httpsig_info: HTTPSigInfo = fastapi.Depends(httpsig_checker),
) -> HTTPSigInfo:
if not httpsig_info.has_valid_signature:
logger.warning(f"Invalid HTTP sig {httpsig_info=}")
body = await request.body()
logger.info(f"{body=}")
raise fastapi.HTTPException(status_code=401, detail="Invalid HTTP sig")
return httpsig_info
class HTTPXSigAuth(httpx.Auth):
def __init__(self, key: Key) -> None:
self.key = key
def auth_flow(
self, r: httpx.Request
) -> typing.Generator[httpx.Request, httpx.Response, None]:
logger.info(f"keyid={self.key.key_id()}")
bodydigest = None
if r.content:
bh = hashlib.new("sha256")
bh.update(r.content)
bodydigest = "SHA-256=" + base64.b64encode(bh.digest()).decode("utf-8")
date = datetime.utcnow().strftime("%a, %d %b %Y %H:%M:%S GMT")
r.headers["Date"] = date
if bodydigest:
r.headers["Digest"] = bodydigest
sigheaders = "(request-target) user-agent host date digest content-type"
else:
sigheaders = "(request-target) user-agent host date accept"
to_be_signed = _build_signed_string(
sigheaders, r.method, r.url.path, r.headers, bodydigest
)
if not self.key.privkey:
raise ValueError("Should never happen")
signer = PKCS1_v1_5.new(self.key.privkey)
digest = SHA256.new()
digest.update(to_be_signed.encode("utf-8"))
sig = base64.b64encode(signer.sign(digest)).decode()
key_id = self.key.key_id()
sig_value = f'keyId="{key_id}",algorithm="rsa-sha256",headers="{sigheaders}",signature="{sig}"' # noqa: E501
logger.debug(f"signed request {sig_value=}")
r.headers["Signature"] = sig_value
yield r
k = Key(config.ID, f"{config.ID}#main-key")
k.load(get_key())
auth = HTTPXSigAuth(k)

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import base64
from typing import Any
from Crypto.PublicKey import RSA
from Crypto.Util import number
from app.config import KEY_PATH
def key_exists() -> bool:
return KEY_PATH.exists()
def generate_key() -> None:
if key_exists():
raise ValueError(f"Key at {KEY_PATH} already exists")
k = RSA.generate(2048)
privkey_pem = k.exportKey("PEM").decode("utf-8")
KEY_PATH.write_text(privkey_pem)
def get_pubkey_as_pem() -> str:
text = KEY_PATH.read_text()
return RSA.import_key(text).public_key().export_key("PEM").decode("utf-8")
def get_key() -> str:
return KEY_PATH.read_text()
class Key(object):
DEFAULT_KEY_SIZE = 2048
def __init__(self, owner: str, id_: str | None = None) -> None:
self.owner = owner
self.privkey_pem: str | None = None
self.pubkey_pem: str | None = None
self.privkey: RSA.RsaKey | None = None
self.pubkey: RSA.RsaKey | None = None
self.id_ = id_
def load_pub(self, pubkey_pem: str) -> None:
self.pubkey_pem = pubkey_pem
self.pubkey = RSA.importKey(pubkey_pem)
def load(self, privkey_pem: str) -> None:
self.privkey_pem = privkey_pem
self.privkey = RSA.importKey(self.privkey_pem)
self.pubkey_pem = self.privkey.publickey().exportKey("PEM").decode("utf-8")
def new(self) -> None:
k = RSA.generate(self.DEFAULT_KEY_SIZE)
self.privkey_pem = k.exportKey("PEM").decode("utf-8")
self.pubkey_pem = k.publickey().exportKey("PEM").decode("utf-8")
self.privkey = k
def key_id(self) -> str:
return self.id_ or f"{self.owner}#main-key"
def to_dict(self) -> dict[str, Any]:
return {
"id": self.key_id(),
"owner": self.owner,
"publicKeyPem": self.pubkey_pem,
"type": "Key",
}
@classmethod
def from_dict(cls, data):
try:
k = cls(data["owner"], data["id"])
k.load_pub(data["publicKeyPem"])
except KeyError:
raise ValueError(f"bad key data {data!r}")
return k
def to_magic_key(self) -> str:
mod = base64.urlsafe_b64encode(
number.long_to_bytes(self.privkey.n) # type: ignore
).decode("utf-8")
pubexp = base64.urlsafe_b64encode(
number.long_to_bytes(self.privkey.e) # type: ignore
).decode("utf-8")
return f"data:application/magic-public-key,RSA.{mod}.{pubexp}"

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app/lookup.py 100644
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import mf2py # type: ignore
from sqlalchemy.orm import Session
from app import activitypub as ap
from app import webfinger
from app.actor import Actor
from app.actor import fetch_actor
from app.ap_object import RemoteObject
def lookup(db: Session, query: str) -> Actor | RemoteObject:
if query.startswith("@"):
query = webfinger.get_actor_url(query) # type: ignore # None check below
if not query:
raise ap.NotAnObjectError(query)
try:
ap_obj = ap.fetch(query)
except ap.NotAnObjectError as not_an_object_error:
resp = not_an_object_error.resp
if not resp:
raise ap.NotAnObjectError(query)
alternate_obj = None
if resp.headers.get("content-type", "").startswith("text/html"):
for alternate in mf2py.parse(doc=resp.text).get("alternates", []):
if alternate.get("type") == "application/activity+json":
alternate_obj = ap.fetch(alternate["url"])
if alternate_obj:
ap_obj = alternate_obj
else:
raise
if ap_obj["type"] in ap.ACTOR_TYPES:
actor = fetch_actor(db, ap_obj["id"])
return actor
else:
return RemoteObject(ap_obj)

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app/main.py 100644
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import base64
import os
import sys
import time
from datetime import datetime
from typing import Any
from typing import Type
import httpx
from dateutil.parser import isoparse
from fastapi import Depends
from fastapi import FastAPI
from fastapi import Request
from fastapi import Response
from fastapi.exceptions import HTTPException
from fastapi.responses import PlainTextResponse
from fastapi.responses import StreamingResponse
from fastapi.staticfiles import StaticFiles
from loguru import logger
from sqlalchemy.orm import Session
from sqlalchemy.orm import joinedload
from starlette.background import BackgroundTask
from starlette.responses import JSONResponse
from app import activitypub as ap
from app import admin
from app import config
from app import httpsig
from app import models
from app import templates
from app.actor import LOCAL_ACTOR
from app.actor import get_actors_metadata
from app.boxes import public_outbox_objects_count
from app.boxes import save_to_inbox
from app.config import BASE_URL
from app.config import DEBUG
from app.config import DOMAIN
from app.config import ID
from app.config import USER_AGENT
from app.config import USERNAME
from app.config import is_activitypub_requested
from app.database import get_db
from app.templates import is_current_user_admin
# TODO(ts):
#
# Next:
# - show likes/announces counter for outbox activities
# - update actor support
# - replies support
# - file upload + place/exif extraction (or not) support
# - custom emoji support
# - hash config/profile to detect when to send Update actor
#
# - [ ] block support
# - [ ] make the media proxy authenticated
# - [ ] prevent SSRF (urlutils from little-boxes)
# - [ ] Dockerization
# - [ ] Webmentions
# - [ ] custom emoji
# - [ ] poll/questions support
# - [ ] cleanup tasks
# - notifs:
# - MENTIONED
# - LIKED
# - ANNOUNCED
# - FOLLOWED
# - UNFOLLOWED
# - POLL_ENDED
app = FastAPI(docs_url=None, redoc_url=None)
app.mount("/static", StaticFiles(directory="app/static"), name="static")
app.include_router(admin.router, prefix="/admin")
app.include_router(admin.unauthenticated_router, prefix="/admin")
logger.configure(extra={"request_id": "no_req_id"})
logger.remove()
logger_format = (
"<green>{time:YYYY-MM-DD HH:mm:ss.SSS}</green> | "
"<level>{level: <8}</level> | "
"<cyan>{name}</cyan>:<cyan>{function}</cyan>:<cyan>{line}</cyan> | "
"{extra[request_id]} - <level>{message}</level>"
)
logger.add(sys.stdout, format=logger_format)
@app.middleware("http")
async def request_middleware(request, call_next):
start_time = time.perf_counter()
request_id = os.urandom(8).hex()
with logger.contextualize(request_id=request_id):
logger.info(
f"{request.client.host}:{request.client.port} - "
f"{request.method} {request.url}"
)
try:
response = await call_next(request)
response.headers["X-Request-ID"] = request_id
response.headers["Server"] = "microblogpub"
elapsed_time = time.perf_counter() - start_time
logger.info(f"status_code={response.status_code} {elapsed_time=:.2f}s")
return response
except Exception:
logger.exception("Request failed")
raise
@app.middleware("http")
async def add_security_headers(request: Request, call_next):
response = await call_next(request)
response.headers["referrer-policy"] = "no-referrer, strict-origin-when-cross-origin"
response.headers["x-content-type-options"] = "nosniff"
response.headers["x-xss-protection"] = "1; mode=block"
response.headers["x-frame-options"] = "SAMEORIGIN"
# TODO(ts): disallow inline CSS?
response.headers["content-security-policy"] = (
"default-src 'self'" + " style-src 'self' 'unsafe-inline';"
)
if not DEBUG:
response.headers[
"strict-transport-security"
] = "max-age=63072000; includeSubdomains"
return response
DEFAULT_CTX = COLLECTION_CTX = [
"https://www.w3.org/ns/activitystreams",
"https://w3id.org/security/v1",
{
# AS ext
"Hashtag": "as:Hashtag",
"sensitive": "as:sensitive",
"manuallyApprovesFollowers": "as:manuallyApprovesFollowers",
# toot
"toot": "http://joinmastodon.org/ns#",
# "featured": "toot:featured",
# schema
"schema": "http://schema.org#",
"PropertyValue": "schema:PropertyValue",
"value": "schema:value",
},
]
class ActivityPubResponse(JSONResponse):
media_type = "application/activity+json"
@app.get("/")
def index(
request: Request,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> templates.TemplateResponse | ActivityPubResponse:
if is_activitypub_requested(request):
return ActivityPubResponse(LOCAL_ACTOR.ap_actor)
outbox_objects = (
db.query(models.OutboxObject)
.filter(
models.OutboxObject.visibility == ap.VisibilityEnum.PUBLIC,
models.OutboxObject.is_deleted.is_(False),
models.OutboxObject.is_hidden_from_homepage.is_(False),
)
.order_by(models.OutboxObject.ap_published_at.desc())
.limit(20)
.all()
)
return templates.render_template(
db,
request,
"index.html",
{"request": request, "objects": outbox_objects},
)
def _build_followx_collection(
db: Session,
model_cls: Type[models.Following | models.Follower],
path: str,
page: bool | None,
next_cursor: str | None,
) -> ap.RawObject:
total_items = db.query(model_cls).count()
if not page and not next_cursor:
return {
"@context": ap.AS_CTX,
"id": ID + path,
"first": ID + path + "?page=true",
"type": "OrderedCollection",
"totalItems": total_items,
}
q = db.query(model_cls).order_by(model_cls.created_at.desc()) # type: ignore
if next_cursor:
q = q.filter(model_cls.created_at < _decode_cursor(next_cursor)) # type: ignore
q = q.limit(20)
items = [followx for followx in q.all()]
next_cursor = None
if (
items
and db.query(model_cls)
.filter(model_cls.created_at < items[-1].created_at)
.count()
> 0
):
next_cursor = _encode_cursor(items[-1].created_at)
collection_page = {
"@context": ap.AS_CTX,
"id": (
ID + path + "?page=true"
if not next_cursor
else ID + path + f"?next_cursor={next_cursor}"
),
"partOf": ID + path,
"type": "OrderedCollectionPage",
"orderedItems": [item.ap_actor_id for item in items],
}
if next_cursor:
collection_page["next"] = ID + path + f"?next_cursor={next_cursor}"
return collection_page
def _encode_cursor(val: datetime) -> str:
return base64.urlsafe_b64encode(val.isoformat().encode()).decode()
def _decode_cursor(cursor: str) -> datetime:
return isoparse(base64.urlsafe_b64decode(cursor).decode())
@app.get("/followers")
def followers(
request: Request,
page: bool | None = None,
next_cursor: str | None = None,
prev_cursor: str | None = None,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse | templates.TemplateResponse:
if is_activitypub_requested(request):
return ActivityPubResponse(
_build_followx_collection(
db=db,
model_cls=models.Follower,
path="/followers",
page=page,
next_cursor=next_cursor,
)
)
followers = (
db.query(models.Follower)
.options(joinedload(models.Follower.actor))
.order_by(models.Follower.created_at.desc())
.limit(20)
.all()
)
# TODO: support next_cursor/prev_cursor
actors_metadata = {}
if is_current_user_admin(request):
actors_metadata = get_actors_metadata(
db,
[f.actor for f in followers],
)
return templates.render_template(
db,
request,
"followers.html",
{
"followers": followers,
"actors_metadata": actors_metadata,
},
)
@app.get("/following")
def following(
request: Request,
page: bool | None = None,
next_cursor: str | None = None,
prev_cursor: str | None = None,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse | templates.TemplateResponse:
if is_activitypub_requested(request):
return ActivityPubResponse(
_build_followx_collection(
db=db,
model_cls=models.Following,
path="/following",
page=page,
next_cursor=next_cursor,
)
)
q = (
db.query(models.Following)
.options(joinedload(models.Following.actor))
.order_by(models.Following.created_at.desc())
.limit(20)
)
following = q.all()
# TODO: support next_cursor/prev_cursor
actors_metadata = {}
if is_current_user_admin(request):
actors_metadata = get_actors_metadata(
db,
[f.actor for f in following],
)
return templates.render_template(
db,
request,
"following.html",
{
"following": following,
"actors_metadata": actors_metadata,
},
)
@app.get("/outbox")
def outbox(
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse:
outbox_objects = (
db.query(models.OutboxObject)
.filter(
models.OutboxObject.visibility == ap.VisibilityEnum.PUBLIC,
models.OutboxObject.is_deleted.is_(False),
)
.order_by(models.OutboxObject.ap_published_at.desc())
.limit(20)
.all()
)
return ActivityPubResponse(
{
"@context": DEFAULT_CTX,
"id": f"{ID}/outbox",
"type": "OrderedCollection",
"totalItems": len(outbox_objects),
"orderedItems": [
ap.remove_context(ap.wrap_object_if_needed(a.ap_object))
for a in outbox_objects
],
}
)
@app.get("/o/{public_id}")
def outbox_by_public_id(
public_id: str,
request: Request,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse | templates.TemplateResponse:
# TODO: ACL?
maybe_object = (
db.query(models.OutboxObject)
.filter(
models.OutboxObject.public_id == public_id,
# models.OutboxObject.is_deleted.is_(False),
)
.one_or_none()
)
if not maybe_object:
raise HTTPException(status_code=404)
#
if is_activitypub_requested(request):
return ActivityPubResponse(maybe_object.ap_object)
return templates.render_template(
db,
request,
"object.html",
{
"outbox_object": maybe_object,
},
)
@app.get("/o/{public_id}/activity")
def outbox_activity_by_public_id(
public_id: str,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse:
# TODO: ACL?
maybe_object = (
db.query(models.OutboxObject)
.filter(models.OutboxObject.public_id == public_id)
.one_or_none()
)
if not maybe_object:
raise HTTPException(status_code=404)
return ActivityPubResponse(ap.wrap_object(maybe_object.ap_object))
@app.get("/t/{tag}")
def tag_by_name(
tag: str,
request: Request,
db: Session = Depends(get_db),
_: httpsig.HTTPSigInfo = Depends(httpsig.httpsig_checker),
) -> ActivityPubResponse | templates.TemplateResponse:
# TODO(ts): implement HTML version
# if is_activitypub_requested(request):
return ActivityPubResponse(
{
"@context": ap.AS_CTX,
"id": BASE_URL + f"/t/{tag}",
"type": "OrderedCollection",
"totalItems": 0,
"orderedItems": [],
}
)
@app.post("/inbox")
async def inbox(
request: Request,
db: Session = Depends(get_db),
httpsig_info: httpsig.HTTPSigInfo = Depends(httpsig.enforce_httpsig),
) -> Response:
logger.info(f"headers={request.headers}")
payload = await request.json()
logger.info(f"{payload=}")
save_to_inbox(db, payload)
return Response(status_code=204)
@app.get("/.well-known/webfinger")
def wellknown_webfinger(resource: str) -> JSONResponse:
"""Exposes/servers WebFinger data."""
if resource not in [f"acct:{USERNAME}@{DOMAIN}", ID]:
raise HTTPException(status_code=404)
out = {
"subject": f"acct:{USERNAME}@{DOMAIN}",
"aliases": [ID],
"links": [
{
"rel": "http://webfinger.net/rel/profile-page",
"type": "text/html",
"href": ID,
},
{"rel": "self", "type": "application/activity+json", "href": ID},
{
"rel": "http://ostatus.org/schema/1.0/subscribe",
"template": DOMAIN + "/authorize_interaction?uri={uri}",
},
],
}
return JSONResponse(out, media_type="application/jrd+json; charset=utf-8")
@app.get("/.well-known/nodeinfo")
async def well_known_nodeinfo() -> dict[str, Any]:
return {
"links": [
{
"rel": "http://nodeinfo.diaspora.software/ns/schema/2.1",
"href": f"{BASE_URL}/nodeinfo",
}
]
}
@app.get("/nodeinfo")
def nodeinfo(
db: Session = Depends(get_db),
):
local_posts = public_outbox_objects_count(db)
return JSONResponse(
{
"version": "2.1",
"software": {
"name": "microblogpub",
"version": config.VERSION,
"repository": "https://github.com/tsileo/microblog.pub",
},
"protocols": ["activitypub"],
"services": {"inbound": [], "outbound": []},
"openRegistrations": False,
"usage": {"users": {"total": 1}, "localPosts": local_posts},
"metadata": {
"nodeName": LOCAL_ACTOR.handle,
},
},
media_type=(
"application/json; "
"profile=http://nodeinfo.diaspora.software/ns/schema/2.1#"
),
)
proxy_client = httpx.AsyncClient()
@app.get("/proxy/media/{encoded_url}")
async def serve_proxy_media(request: Request, encoded_url: str) -> StreamingResponse:
# Decode the base64-encoded URL
url = base64.urlsafe_b64decode(encoded_url).decode()
# Request the URL (and filter request headers)
proxy_req = proxy_client.build_request(
request.method,
url,
headers=[
(k, v)
for (k, v) in request.headers.raw
if k.lower()
not in [b"host", b"cookie", b"x-forwarded-for", b"x-real-ip", b"user-agent"]
]
+ [(b"user-agent", USER_AGENT.encode())],
)
proxy_resp = await proxy_client.send(proxy_req, stream=True)
# Filter the headers
proxy_resp_headers = [
(k, v)
for (k, v) in proxy_resp.headers.items()
if k.lower()
in [
"content-length",
"content-type",
"content-range",
"accept-ranges" "etag",
"cache-control",
"expires",
"date",
"last-modified",
]
]
return StreamingResponse(
proxy_resp.aiter_raw(),
status_code=proxy_resp.status_code,
headers=dict(proxy_resp_headers),
background=BackgroundTask(proxy_resp.aclose),
)
@app.get("/robots.txt", response_class=PlainTextResponse)
async def robots_file():
return """User-agent: *
Disallow: /followers
Disallow: /following
Disallow: /admin"""

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app/models.py 100644
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import enum
from typing import Any
from typing import Optional
from sqlalchemy import JSON
from sqlalchemy import Boolean
from sqlalchemy import Column
from sqlalchemy import DateTime
from sqlalchemy import Enum
from sqlalchemy import ForeignKey
from sqlalchemy import Integer
from sqlalchemy import String
from sqlalchemy import UniqueConstraint
from sqlalchemy.orm import Mapped
from sqlalchemy.orm import relationship
from app import activitypub as ap
from app.actor import LOCAL_ACTOR
from app.actor import Actor as BaseActor
from app.ap_object import Object as BaseObject
from app.database import Base
from app.database import now
class Actor(Base, BaseActor):
__tablename__ = "actors"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
updated_at = Column(DateTime(timezone=True), nullable=False, default=now)
ap_id = Column(String, unique=True, nullable=False, index=True)
ap_actor: Mapped[ap.RawObject] = Column(JSON, nullable=False)
ap_type = Column(String, nullable=False)
handle = Column(String, nullable=True, index=True)
@property
def is_from_db(self) -> bool:
return True
class InboxObject(Base, BaseObject):
__tablename__ = "inbox"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
updated_at = Column(DateTime(timezone=True), nullable=False, default=now)
actor_id = Column(Integer, ForeignKey("actors.id"), nullable=False)
actor: Mapped[Actor] = relationship(Actor, uselist=False)
server = Column(String, nullable=False)
is_hidden_from_stream = Column(Boolean, nullable=False, default=False)
ap_actor_id = Column(String, nullable=False)
ap_type = Column(String, nullable=False)
ap_id = Column(String, nullable=False, unique=True, index=True)
ap_context = Column(String, nullable=True)
ap_published_at = Column(DateTime(timezone=True), nullable=False)
ap_object: Mapped[ap.RawObject] = Column(JSON, nullable=False)
activity_object_ap_id = Column(String, nullable=True)
visibility = Column(Enum(ap.VisibilityEnum), nullable=False)
# Used for Like, Announce and Undo activities
relates_to_inbox_object_id = Column(
Integer,
ForeignKey("inbox.id"),
nullable=True,
)
relates_to_inbox_object: Mapped[Optional["InboxObject"]] = relationship(
"InboxObject",
foreign_keys=relates_to_inbox_object_id,
remote_side=id,
uselist=False,
)
relates_to_outbox_object_id = Column(
Integer,
ForeignKey("outbox.id"),
nullable=True,
)
relates_to_outbox_object: Mapped[Optional["OutboxObject"]] = relationship(
"OutboxObject",
foreign_keys=[relates_to_outbox_object_id],
uselist=False,
)
undone_by_inbox_object_id = Column(Integer, ForeignKey("inbox.id"), nullable=True)
# Link the oubox AP ID to allow undo without any extra query
liked_via_outbox_object_ap_id = Column(String, nullable=True)
announced_via_outbox_object_ap_id = Column(String, nullable=True)
is_bookmarked = Column(Boolean, nullable=False, default=False)
# FIXME(ts): do we need this?
has_replies = Column(Boolean, nullable=False, default=False)
og_meta: Mapped[list[dict[str, Any]] | None] = Column(JSON, nullable=True)
class OutboxObject(Base, BaseObject):
__tablename__ = "outbox"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
updated_at = Column(DateTime(timezone=True), nullable=False, default=now)
is_hidden_from_homepage = Column(Boolean, nullable=False, default=False)
public_id = Column(String, nullable=False, index=True)
ap_type = Column(String, nullable=False)
ap_id = Column(String, nullable=False, unique=True, index=True)
ap_context = Column(String, nullable=True)
ap_object: Mapped[ap.RawObject] = Column(JSON, nullable=False)
activity_object_ap_id = Column(String, nullable=True)
# Source content for activities (like Notes)
source = Column(String, nullable=True)
ap_published_at = Column(DateTime(timezone=True), nullable=False, default=now)
visibility = Column(Enum(ap.VisibilityEnum), nullable=False)
likes_count = Column(Integer, nullable=False, default=0)
announces_count = Column(Integer, nullable=False, default=0)
replies_count = Column(Integer, nullable=False, default=0)
webmentions = Column(JSON, nullable=True)
og_meta: Mapped[list[dict[str, Any]] | None] = Column(JSON, nullable=True)
# Never actually delete from the outbox
is_deleted = Column(Boolean, nullable=False, default=False)
# Used for Like, Announce and Undo activities
relates_to_inbox_object_id = Column(
Integer,
ForeignKey("inbox.id"),
nullable=True,
)
relates_to_inbox_object: Mapped[Optional["InboxObject"]] = relationship(
"InboxObject",
foreign_keys=[relates_to_inbox_object_id],
uselist=False,
)
relates_to_outbox_object_id = Column(
Integer,
ForeignKey("outbox.id"),
nullable=True,
)
relates_to_outbox_object: Mapped[Optional["OutboxObject"]] = relationship(
"OutboxObject",
foreign_keys=[relates_to_outbox_object_id],
remote_side=id,
uselist=False,
)
undone_by_outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=True)
@property
def actor(self) -> BaseActor:
return LOCAL_ACTOR
class Follower(Base):
__tablename__ = "followers"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
updated_at = Column(DateTime(timezone=True), nullable=False, default=now)
actor_id = Column(Integer, ForeignKey("actors.id"), nullable=False, unique=True)
actor = relationship(Actor, uselist=False)
inbox_object_id = Column(Integer, ForeignKey("inbox.id"), nullable=False)
inbox_object = relationship(InboxObject, uselist=False)
ap_actor_id = Column(String, nullable=False, unique=True)
class Following(Base):
__tablename__ = "following"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
updated_at = Column(DateTime(timezone=True), nullable=False, default=now)
actor_id = Column(Integer, ForeignKey("actors.id"), nullable=False, unique=True)
actor = relationship(Actor, uselist=False)
outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=False)
outbox_object = relationship(OutboxObject, uselist=False)
ap_actor_id = Column(String, nullable=False, unique=True)
@enum.unique
class NotificationType(str, enum.Enum):
NEW_FOLLOWER = "new_follower"
UNFOLLOW = "unfollow"
LIKE = "like"
UNDO_LIKE = "undo_like"
ANNOUNCE = "announce"
UNDO_ANNOUNCE = "undo_announce"
# TODO:
MENTION = "mention"
class Notification(Base):
__tablename__ = "notifications"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
notification_type = Column(Enum(NotificationType), nullable=True)
is_new = Column(Boolean, nullable=False, default=True)
actor_id = Column(Integer, ForeignKey("actors.id"), nullable=True)
actor = relationship(Actor, uselist=False)
outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=True)
outbox_object = relationship(OutboxObject, uselist=False)
inbox_object_id = Column(Integer, ForeignKey("inbox.id"), nullable=True)
inbox_object = relationship(InboxObject, uselist=False)
class OutgoingActivity(Base):
__tablename__ = "outgoing_activities"
id = Column(Integer, primary_key=True, index=True)
created_at = Column(DateTime(timezone=True), nullable=False, default=now)
recipient = Column(String, nullable=False)
outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=False)
outbox_object = relationship(OutboxObject, uselist=False)
tries = Column(Integer, nullable=False, default=0)
next_try = Column(DateTime(timezone=True), nullable=True, default=now)
last_try = Column(DateTime(timezone=True), nullable=True)
last_status_code = Column(Integer, nullable=True)
last_response = Column(String, nullable=True)
is_sent = Column(Boolean, nullable=False, default=False)
is_errored = Column(Boolean, nullable=False, default=False)
error = Column(String, nullable=True)
class TaggedOutboxObject(Base):
__tablename__ = "tagged_outbox_objects"
__table_args__ = (
UniqueConstraint("outbox_object_id", "tag", name="uix_tagged_object"),
)
id = Column(Integer, primary_key=True, index=True)
outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=False)
outbox_object = relationship(OutboxObject, uselist=False)
tag = Column(String, nullable=False, index=True)
"""
class Upload(Base):
__tablename__ = "upload"
filename = Column(String, nullable=False)
filehash = Column(String, nullable=False)
filesize = Column(Integer, nullable=False)
class OutboxObjectAttachment(Base):
__tablename__ = "outbox_object_attachment"
id = Column(Integer, primary_key=True, index=True)
outbox_object_id = Column(Integer, ForeignKey("outbox.id"), nullable=False)
outbox_object = relationship(OutboxObject, uselist=False)
upload_id = Column(Integer, ForeignKey("upload.id"))
upload = relationship(Upload, uselist=False)
"""

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app/opengraph.py 100644
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import mimetypes
import re
from urllib.parse import urlparse
import httpx
from bs4 import BeautifulSoup # type: ignore
from pydantic import BaseModel
from app import activitypub as ap
from app import config
from app.urlutils import is_url_valid
class OpenGraphMeta(BaseModel):
url: str
title: str
image: str
description: str
site_name: str
def _scrap_og_meta(html: str) -> OpenGraphMeta | None:
soup = BeautifulSoup(html, "html5lib")
ogs = {
og.attrs["property"]: og.attrs.get("content")
for og in soup.html.head.findAll(property=re.compile(r"^og"))
}
raw = {}
for field in OpenGraphMeta.__fields__.keys():
og_field = f"og:{field}"
if not ogs.get(og_field):
return None
raw[field] = ogs[og_field]
return OpenGraphMeta.parse_obj(raw)
def _urls_from_note(note: ap.RawObject) -> set[str]:
note_host = urlparse(ap.get_id(note["id"]) or "").netloc
urls = set()
if "content" in note:
soup = BeautifulSoup(note["content"], "html5lib")
for link in soup.find_all("a"):
h = link.get("href")
ph = urlparse(h)
mimetype, _ = mimetypes.guess_type(h)
if (
ph.scheme in {"http", "https"}
and ph.netloc != note_host
and is_url_valid(h)
and (
not mimetype
or mimetype.split("/")[0] in ["image", "video", "audio"]
)
):
urls.add(h)
return urls
def _og_meta_from_url(url: str) -> OpenGraphMeta | None:
resp = httpx.get(
url,
headers={
"User-Agent": config.USER_AGENT,
},
follow_redirects=True,
)
resp.raise_for_status()
if not (ct := resp.headers.get("content-type")) or not ct.startswith("text/html"):
return None
return _scrap_og_meta(resp.text)
def og_meta_from_note(note: ap.RawObject) -> list[OpenGraphMeta]:
og_meta = []
urls = _urls_from_note(note)
for url in urls:
try:
maybe_og_meta = _og_meta_from_url(url)
if maybe_og_meta:
og_meta.append(maybe_og_meta)
except httpx.HTTPError:
pass
return og_meta

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import email
import time
import traceback
from datetime import datetime
from datetime import timedelta
import httpx
from loguru import logger
from sqlalchemy.orm import Session
from app import activitypub as ap
from app import models
from app.database import SessionLocal
from app.database import now
_MAX_RETRIES = 16
def new_outgoing_activity(
db: Session,
recipient: str,
outbox_object_id: int,
) -> models.OutgoingActivity:
outgoing_activity = models.OutgoingActivity(
recipient=recipient,
outbox_object_id=outbox_object_id,
)
db.add(outgoing_activity)
db.commit()
db.refresh(outgoing_activity)
return outgoing_activity
def _parse_retry_after(retry_after: str) -> datetime | None:
try:
# Retry-After: 120
seconds = int(retry_after)
except ValueError:
# Retry-After: Wed, 21 Oct 2015 07:28:00 GMT
dt_tuple = email.utils.parsedate_tz(retry_after)
if dt_tuple is None:
return None
seconds = int(email.utils.mktime_tz(dt_tuple) - time.time())
return now() + timedelta(seconds=seconds)
def _exp_backoff(tries: int) -> datetime:
seconds = 2 * (2 ** (tries - 1))
return now() + timedelta(seconds=seconds)
def _set_next_try(
outgoing_activity: models.OutgoingActivity,
next_try: datetime | None = None,
) -> None:
if not outgoing_activity.tries:
raise ValueError("Should never happen")
if outgoing_activity.tries == _MAX_RETRIES:
outgoing_activity.is_errored = True
outgoing_activity.next_try = None
else:
outgoing_activity.next_try = next_try or _exp_backoff(outgoing_activity.tries)
def process_next_outgoing_activity(db: Session) -> bool:
q = (
db.query(models.OutgoingActivity)
.filter(
models.OutgoingActivity.next_try <= now(),
models.OutgoingActivity.is_errored.is_(False),
models.OutgoingActivity.is_sent.is_(False),
)
.order_by(models.OutgoingActivity.next_try)
)
q_count = q.count()
logger.info(f"{q_count} outgoing activities ready to process")
if not q_count:
logger.info("No activities to process")
return False
next_activity = q.limit(1).one()
next_activity.tries = next_activity.tries + 1
next_activity.last_try = now()
payload = ap.wrap_object_if_needed(next_activity.outbox_object.ap_object)
logger.info(f"{payload=}")
try:
resp = ap.post(next_activity.recipient, payload)
except httpx.HTTPStatusError as http_error:
logger.exception("Failed")
next_activity.last_status_code = http_error.response.status_code
next_activity.last_response = http_error.response.text
next_activity.error = traceback.format_exc()
if http_error.response.status_code in [429, 503]:
retry_after: datetime | None = None
if retry_after_value := http_error.response.headers.get("Retry-After"):
retry_after = _parse_retry_after(retry_after_value)
_set_next_try(next_activity, retry_after)
elif 400 <= http_error.response.status_code < 500:
logger.info(f"status_code={http_error.response.status_code} not retrying")
next_activity.is_errored = True
next_activity.next_try = None
else:
_set_next_try(next_activity)
except Exception:
logger.exception("Failed")
next_activity.error = traceback.format_exc()
_set_next_try(next_activity)
else:
logger.info("Success")
next_activity.is_sent = True
next_activity.last_status_code = resp.status_code
next_activity.last_response = resp.text
db.commit()
return True
def loop() -> None:
db = SessionLocal()
while 1:
try:
process_next_outgoing_activity(db)
except Exception:
logger.exception("Failed to process next outgoing activity")
raise
time.sleep(1)
if __name__ == "__main__":
loop()

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app/source.py 100644
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import re
from markdown import markdown
from sqlalchemy.orm import Session
from app import models
from app import webfinger
from app.actor import fetch_actor
from app.config import BASE_URL
def _set_a_attrs(attrs, new=False):
attrs[(None, "target")] = "_blank"
attrs[(None, "class")] = "external"
attrs[(None, "rel")] = "noopener"
attrs[(None, "title")] = attrs[(None, "href")]
return attrs
_HASHTAG_REGEX = re.compile(r"(#[\d\w]+)")
_MENTION_REGEX = re.compile(r"@[\d\w_.+-]+@[\d\w-]+\.[\d\w\-.]+")
def _hashtagify(db: Session, content: str) -> tuple[str, list[dict[str, str]]]:
tags = []
hashtags = re.findall(_HASHTAG_REGEX, content)
hashtags = sorted(set(hashtags), reverse=True) # unique tags, longest first
for hashtag in hashtags:
tag = hashtag[1:]
link = f'<a href="{BASE_URL}/t/{tag}" class="mention hashtag" rel="tag">#<span>{tag}</span></a>' # noqa: E501
tags.append(dict(href=f"{BASE_URL}/t/{tag}", name=hashtag, type="Hashtag"))
content = content.replace(hashtag, link)
return content, tags
def _mentionify(
db: Session, content: str, hide_domain: bool = False
) -> tuple[str, list[dict[str, str]]]:
tags = []
for mention in re.findall(_MENTION_REGEX, content):
_, username, domain = mention.split("@")
actor = (
db.query(models.Actor).filter(models.Actor.handle == mention).one_or_none()
)
if not actor:
actor_url = webfinger.get_actor_url(mention)
if not actor_url:
# FIXME(ts): raise an error?
continue
actor = fetch_actor(db, actor_url)
tags.append(dict(type="Mention", href=actor.url, name=mention))
d = f"@{domain}"
if hide_domain:
d = ""
link = f'<span class="h-card"><a href="{actor.url}" class="u-url mention">@<span>{username}</span>{d}</a></span>' # noqa: E501
content = content.replace(mention, link)
return content, tags
def markdownify(
db: Session,
content: str,
mentionify: bool = True,
hashtagify: bool = True,
) -> tuple[str, list[dict[str, str]]]:
"""
>>> content, tags = markdownify("Hello")
"""
tags = []
if hashtagify:
content, hashtag_tags = _hashtagify(db, content)
tags.extend(hashtag_tags)
if mentionify:
content, mention_tags = _mentionify(db, content)
tags.extend(mention_tags)
content = markdown(content, extensions=["mdx_linkify"])
return content, tags

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*.css

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app/templates.py 100644
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import base64
from datetime import datetime
from datetime import timezone
from functools import lru_cache
from typing import Any
from urllib.parse import urlparse
import bleach
import timeago # type: ignore
from bs4 import BeautifulSoup # type: ignore
from fastapi import Request
from fastapi.templating import Jinja2Templates
from sqlalchemy.orm import Session
from starlette.templating import _TemplateResponse as TemplateResponse
from app import models
from app.actor import LOCAL_ACTOR
from app.ap_object import Attachment
from app.boxes import public_outbox_objects_count
from app.config import DEBUG
from app.config import DOMAIN
from app.config import VERSION
from app.config import generate_csrf_token
from app.config import session_serializer
from app.database import now
from app.highlight import HIGHLIGHT_CSS
from app.highlight import highlight
_templates = Jinja2Templates(directory="app/templates")
def _filter_domain(text: str) -> str:
hostname = urlparse(text).hostname
if not hostname:
raise ValueError(f"No hostname for {text}")
return hostname
def _media_proxy_url(url: str | None) -> str:
if not url:
return "/static/nopic.png"
if url.startswith(DOMAIN):
return url
encoded_url = base64.urlsafe_b64encode(url.encode()).decode()
return f"/proxy/media/{encoded_url}"
def is_current_user_admin(request: Request) -> bool:
is_admin = False
session_cookie = request.cookies.get("session")
if session_cookie:
try:
loaded_session = session_serializer.loads(
session_cookie,
max_age=3600 * 12,
)
except Exception:
pass
else:
is_admin = loaded_session.get("is_logged_in")
return is_admin
def render_template(
db: Session,
request: Request,
template: str,
template_args: dict[str, Any] = {},
) -> TemplateResponse:
is_admin = False
is_admin = is_current_user_admin(request)
return _templates.TemplateResponse(
template,
{
"request": request,
"debug": DEBUG,
"microblogpub_version": VERSION,
"is_admin": is_admin,
"csrf_token": generate_csrf_token() if is_admin else None,
"highlight_css": HIGHLIGHT_CSS,
"notifications_count": db.query(models.Notification)
.filter(models.Notification.is_new.is_(True))
.count()
if is_admin
else 0,
"local_actor": LOCAL_ACTOR,
"followers_count": db.query(models.Follower).count(),
"following_count": db.query(models.Following).count(),
"objects_count": public_outbox_objects_count(db),
**template_args,
},
)
# HTML/templates helper
ALLOWED_TAGS = [
"a",
"abbr",
"acronym",
"b",
"br",
"blockquote",
"code",
"pre",
"em",
"i",
"li",
"ol",
"strong",
"sup",
"sub",
"del",
"ul",
"span",
"div",
"p",
"h1",
"h2",
"h3",
"h4",
"h5",
"h6",
"table",
"th",
"tr",
"td",
"thead",
"tbody",
"tfoot",
"colgroup",
"caption",
"img",
]
ALLOWED_ATTRIBUTES = {
"a": ["href", "title"],
"abbr": ["title"],
"acronym": ["title"],
"img": ["src", "alt", "title"],
}
@lru_cache(maxsize=256)
def _update_inline_imgs(content):
soup = BeautifulSoup(content, "html5lib")
imgs = soup.find_all("img")
if not imgs:
return content
for img in imgs:
if not img.attrs.get("src"):
continue
img.attrs["src"] = _media_proxy_url(img.attrs["src"])
return soup.find("body").decode_contents()
def _clean_html(html: str) -> str:
try:
return bleach.clean(
_update_inline_imgs(highlight(html)),
tags=ALLOWED_TAGS,
attributes=ALLOWED_ATTRIBUTES,
strip=True,
)
except Exception:
raise
def _timeago(original_dt: datetime) -> str:
dt = original_dt
if dt.tzinfo:
dt = dt.astimezone(timezone.utc).replace(tzinfo=None)
return timeago.format(dt, now().replace(tzinfo=None))
def _has_media_type(attachment: Attachment, media_type_prefix: str) -> bool:
return attachment.media_type.startswith(media_type_prefix)
_templates.env.filters["domain"] = _filter_domain
_templates.env.filters["media_proxy_url"] = _media_proxy_url
_templates.env.filters["clean_html"] = _clean_html
_templates.env.filters["timeago"] = _timeago
_templates.env.filters["has_media_type"] = _has_media_type

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app/templates/admin_new.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
<form action="{{ request.url_for("admin_actions_new") }}" enctype="multipart/form-data" method="POST">
{{ utils.embed_csrf_token() }}
{{ utils.embed_redirect_url() }}
<textarea name="content" rows="10" cols="50" autofocus="autofocus" designMode="on" style="font-size:1.2em;width:95%;"></textarea>
<input name="files" type="file" multiple>
<input type="submit" value="Publish">
</form>
{% endblock %}

25
app/templates/admin_stream.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
{% for inbox_object in stream %}
{% if inbox_object.ap_type == "Announce" %}
{% if inbox_object.relates_to_inbox_object_id %}
{{ utils.display_object(inbox_object.relates_to_inbox_object) }}
{% else %}
{% endif %}
{% else %}
{{ utils.display_object(inbox_object) }}
{% if inbox_object.liked_via_outbox_object_ap_id %}
{{ utils.admin_undo_button(inbox_object.liked_via_outbox_object_ap_id, "Unlike") }}
{% else %}
{{ utils.admin_like_button(inbox_object.ap_id) }}
{% endif %}
{{ utils.admin_announce_button(inbox_object.ap_id) }}
{% endif %}
{% endfor %}
{% endblock %}

12
app/templates/followers.html 100644
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{%- import "utils.html" as utils -%}
{% extends "layout.html" %}
{% block content %}
{% include "header.html" %}
<div id="followers">
<ul>
{% for follower in followers %}
<li>{{ utils.display_actor(follower.actor, actors_metadata) }}</li>
{% endfor %}
</ul>
</div>
{% endblock %}

12
app/templates/following.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
{% include "header.html" %}
<div id="following">
<ul>
{% for follow in following %}
<li>{{ utils.display_actor(follow.actor, actors_metadata) }}</li>
{% endfor %}
</ul>
</div>
{% endblock %}

31
app/templates/header.html 100644
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<header id="header">
<div class="h-card p-author">
<data class="u-photo" value="{{ local_actor.icon_url }}"></data>
<a href="{{ local_actor.url }}" class="u-url u-uid no-hover title">
<span style="font-size:1.1em;">{{ local_actor.name }}</span>
<span style="font-size:0.85em;" class="subtitle-username">{{ local_actor.handle }}</span>
</a>
<div class="p-note summary">
{{ local_actor.summary | safe }}
</div>
</div>
{%- macro header_link(url, text) -%}
{% set url_for = request.url_for(url) %}
<a href="{{ url_for }}" {% if request.url == url_for %}class="active"{% endif %}>{{ text }}</a>
{% endmacro %}
<div style="margin:30px 0;">
<nav class="flexbox">
<ul>
<li>{{ header_link("index", "Notes") }} <span>{{ objects_count }}</span></li>
<li>{{ header_link("followers", "Followers") }} <span>{{ followers_count }}</span></li>
<li>{{ header_link("following", "Following") }} <span>{{ following_count }}</span></li>
</ul>
</nav>
</header>

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app/templates/index.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
{% include "header.html" %}
{% for outbox_object in objects %}
{{ outbox_object.likes_count }}
{{ outbox_object.announces_count }}
{{ utils.display_object(outbox_object) }}
{% endfor %}
{% endblock %}

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app/templates/layout.html 100644
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<!DOCTYPE HTML>
<html lang="en">
<head>
<meta charset="utf-8">
<meta http-equiv="x-ua-compatible" content="ie=edge">
<meta name="viewport" content="width=device-width, initial-scale=1, shrink-to-fit=no">
<link rel="stylesheet" href="/static/css/main.css">
<style>
{{ highlight_css }}
</style>
</head>
<body>
<div id="main">
<main>
{% if is_admin %}
<div id="admin">
{% macro admin_link(url, text) %}
{% set url_for = request.url_for(url) %}
<a href="{{ url_for }}" {% if request.url == url_for %}class="active"{% endif %}>{{ text }}</a>
{% endmacro %}
<div style="margin-bottom:30px;">
<nav class="flexbox">
<ul>
<li>Admin</li>
<li>{{ admin_link("index", "Public") }}</li>
<li>{{ admin_link("admin_new", "New") }}</li>
<li>{{ admin_link("stream", "Stream") }}</li>
<li>{{ admin_link("get_notifications", "Notifications") }} {% if notifications_count %}({{ notifications_count }}){% endif %}</li>
<li>{{ admin_link("get_lookup", "Lookup") }}</li>
<li><a href="">Bookmarks</a></li>
<li><a href="{{ request.url_for("logout")}}">Logout</a></li>
</ul>
</nav>
</div>
</div>
{% endif %}
{% block content %}{% endblock %}
</main>
</div>
<footer class="footer">
Powered by <a href="https://microblog.pub">microblog.pub</a> <small class="microblogpub-version"><code>{{ microblogpub_version }}</code></small> (<a href="https://github.com/tsileo/microblog.pub">source code</a>) and the <a href="https://activitypub.rocks/">ActivityPub</a> protocol
</footer>
</body>
</html>

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app/templates/login.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
<div style="display:grid;height:80%;">
<div style="margin:auto;">
<form action="/admin/login" method="POST">
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
<input type="password" name="password">
<input type="submit" value="Login">
</form>
</div>
</div>
{% endblock %}

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app/templates/lookup.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
<form action="{{ url_for("get_lookup") }}" method="GET">
<input type="text" name="query" value="{{ query if query else "" }}">
<input type="submit" value="Lookup">
</form>
{{ actors_metadata }}
{% if ap_object and ap_object.ap_type == "Person" %}
{{ utils.display_actor(ap_object, actors_metadata) }}
{% elif ap_object %}
{{ utils.display_object(ap_object) }}
{% endif %}
{% endblock %}

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app/templates/notifications.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
<h2>Notifications</h2>
<div id="notifications">
{%- for notif in notifications %}
<div>
{%- if notif.notification_type.value == "new_follower" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> followed you
</div>
{{ utils.display_actor(notif.actor, actors_metadata) }}
{% elif notif.notification_type.value == "unfollow" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> unfollowed you
</div>
{{ utils.display_actor(notif.actor, actors_metadata) }}
{% elif notif.notification_type.value == "like" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> liked a post
</div>
{{ utils.display_object(notif.outbox_object) }}
{% elif notif.notification_type.value == "undo_like" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> un-liked a post
</div>
{{ utils.display_object(notif.outbox_object) }}
{% elif notif.notification_type.value == "announce" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> boosted a post
</div>
{{ utils.display_object(notif.outbox_object) }}
{% elif notif.notification_type.value == "undo_announce" %}
<div title="{{ notif.created_at.isoformat() }}">
<a style="font-weight:bold;" href="{{ notif.actor.url }}">{{ notif.actor.name or notif.actor.preferred_username }}</a> un-boosted a post
</div>
{{ utils.display_object(notif.outbox_object) }}
{% else %}
{{ notif }}
{%- endif %}
</div>
{%- endfor %}
</div>
{% endblock %}

8
app/templates/object.html 100644
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{%- import "utils.html" as utils with context -%}
{% extends "layout.html" %}
{% block content %}
{% include "header.html" %}
{{ utils.display_object(outbox_object) }}
{% endblock %}

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app/templates/utils.html 100644
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{% macro embed_csrf_token() %}
<input type="hidden" name="csrf_token" value="{{ csrf_token }}">
{% endmacro %}
{% macro embed_redirect_url() %}
<input type="hidden" name="redirect_url" value="{{ request.url }}">
{% endmacro %}
{% macro admin_follow_button(actor) %}
<form action="{{ request.url_for("admin_actions_follow") }}" method="POST">
{{ embed_csrf_token() }}
{{ embed_redirect_url() }}
<input type="hidden" name="ap_actor_id" value="{{ actor.ap_id }}">
<input type="submit" value="Follow">
</form>
{% endmacro %}
{% macro admin_like_button(ap_object_id) %}
<form action="{{ request.url_for("admin_actions_like") }}" method="POST">
{{ embed_csrf_token() }}
{{ embed_redirect_url() }}
<input type="hidden" name="ap_object_id" value="{{ ap_object_id }}">
<input type="submit" value="Like">
</form>
{% endmacro %}
{% macro admin_announce_button(ap_object_id) %}
<form action="{{ request.url_for("admin_actions_announce") }}" method="POST">
{{ embed_csrf_token() }}
{{ embed_redirect_url() }}
<input type="hidden" name="ap_object_id" value="{{ ap_object_id }}">
<input type="submit" value="Announce">
</form>
{% endmacro %}
{% macro admin_undo_button(ap_object_id, action="Undo") %}
<form action="{{ request.url_for("admin_actions_undo") }}" method="POST">
{{ embed_csrf_token() }}
{{ embed_redirect_url() }}
<input type="hidden" name="ap_object_id" value="{{ ap_object_id }}">
<input type="submit" value="{{ action }}">
</form>
{% endmacro %}
{% macro sensitive_button(permalink_id) %}
<form action="" method="GET">
<input type="hidden" name="show_sensitive" value="{{ permalink_id }}">
{% for k, v in request.query_params.items() %}
<input type="hidden" name="{{k}}" value="{{v}}">
{% endfor %}
<button type="submit">display sensitive content</button>
</form>
{% endmacro %}
{% macro display_actor(actor, actors_metadata) %}
{{ actors_metadata }}
{% set metadata = actors_metadata.get(actor.ap_id) %}
<div style="display: flex;column-gap: 20px;margin:20px 0 10px 0;" class="actor-box">
<div style="flex: 0 0 48px;">
<img src="{{ actor.icon_url | media_proxy_url }}" style="max-width:45px;">
</div>
<a href="{{ actor.url }}" style="">
<div><strong>{{ actor.name or actor.preferred_username }}</strong></div>
<div>{{ actor.handle }}</div>
</a>
</div>
{% if metadata %}
<div>
<nav class="flexbox">
<ul>
<li>
{% if metadata.is_following %}already following {{ admin_undo_button(metadata.outbox_follow_ap_id, "Unfollow")}}
{% elif metadata.is_follow_request_sent %}follow request sent
{% else %}
{{ admin_follow_button(actor) }}
{% endif %}
</li>
<li>
{% if metadata.is_follower %}follows you{% else %}
{% endif %}
</li>
</ul>
</nav>
</div>
{% endif %}
{% endmacro %}
{% macro display_object(object) %}
{% if object.ap_type in ["Note", "Article", "Video"] %}
<div class="activity-wrap" id="{{ object.permalink_id }}">
<div class="activity-content">
<img src="{% if object.actor.icon_url %}{{ object.actor.icon_url | media_proxy_url }}{% else %}/static/nopic.png{% endif %}" alt="" class="actor-icon">
<div class="activity-header">
<strong>{{ object.actor.name or object.actor.preferred_username }}</strong>
<span>{{ object.actor.handle }}</span>
<span class="activity-date" title="{{ object.ap_published_at.isoformat() }}">
<a href="{{ object.url }}">{{ object.ap_published_at | timeago }}</a>
</span>
<div class="activity-main">
{{ object.content | clean_html | safe }}
</div>
</div>
</div>
{% if object.attachments and object.sensitive and not request.query_params["show_sensitive"] == object.permalink_id %}
<div class="activity-attachment">
{{ sensitive_button(object.permalink_id )}}
</div>
{% endif %}
{% if object.attachments and (not object.sensitive or (object.sensitive and request.query_params["show_sensitive"] == object.permalink_id)) %}
<div class="activity-attachment">
{% for attachment in object.attachments %}
{% if attachment.type == "Image" or (attachment | has_media_type("image")) %}
<img src="{{ attachment.url | media_proxy_url }}"{% if attachment.name %} alt="{{ attachment.name }}"{% endif %} class="attachment">
{% elif attachment.type == "Video" or (attachment | has_media_type("video")) %}
<video controls preload="metadata" src="{{ attachment.url | media_proxy_url }}"{% if attachment.name %} title="{{ attachment.name }}"{% endif %} class="attachmeent"></video>
{% elif attachment.type == "Audio" or (attachment | has_media_type("audio")) %}
<audio controls preload="metadata" src="{{ attachment.url | media_proxy_url }}"{% if attachment.name%} title="{{ attachment.name }}"{% endif %} style="width:480px;" class="attachment"></audio>
{% else %}
<a href="{{ attachment.url | media_proxy_url }}"{% if attachment.name %} title="{{ attachment.name }}"{% endif %} class="attachment">{{ attachment.url }}</a>
{% endif %}
{% endfor %}
</div>
{% endif %}
<div class="activity-bar">
<div class="bar-item">
<div class="comment-count">33</div>
</div>
<div class="bar-item">
<div class="retweet-count">397</div>
</div>
<div class="bar-item">
<div class="likes-count">
2.6k
</div>
</div>
</div>
</div>
{% endif %}
{% endmacro %}

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app/urlutils.py 100644
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import functools
import ipaddress
import socket
from urllib.parse import urlparse
from loguru import logger
from app.config import DEBUG
class InvalidURLError(Exception):
pass
@functools.lru_cache
def _getaddrinfo(hostname: str, port: int) -> str:
try:
ip_address = str(ipaddress.ip_address(hostname))
except ValueError:
try:
ip_address = socket.getaddrinfo(hostname, port)[0][4][0]
logger.debug(f"DNS lookup: {hostname} -> {ip_address}")
except socket.gaierror:
logger.exception(f"failed to lookup addr info for {hostname}")
raise
return ip_address
def is_url_valid(url: str) -> bool:
"""Implements basic SSRF protection."""
parsed = urlparse(url)
if parsed.scheme not in ["http", "https"]:
return False
# XXX in debug mode, we want to allow requests to localhost to test the
# federation with local instances
if DEBUG: # pragma: no cover
return True
if not parsed.hostname or parsed.hostname.lower() in ["localhost"]:
return False
ip_address = _getaddrinfo(
parsed.hostname, parsed.port or (80 if parsed.scheme == "http" else 443)
)
logger.debug(f"{ip_address=}")
if ipaddress.ip_address(ip_address).is_private:
logger.info(f"rejecting private URL {url} -> {ip_address}")
return False
return True
def check_url(url: str, debug: bool = False) -> None:
logger.debug(f"check_url {url=}")
if not is_url_valid(url):
raise InvalidURLError(f'"{url}" is invalid')
return None

79
app/webfinger.py 100644
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from typing import Any
from urllib.parse import urlparse
import httpx
from loguru import logger
from app import activitypub as ap
def webfinger(
resource: str,
) -> dict[str, Any] | None: # noqa: C901
"""Mastodon-like WebFinger resolution to retrieve the activity stream Actor URL."""
logger.info(f"performing webfinger resolution for {resource}")
protos = ["https", "http"]
if resource.startswith("http://"):
protos.reverse()
host = urlparse(resource).netloc
elif resource.startswith("https://"):
host = urlparse(resource).netloc
else:
if resource.startswith("acct:"):
resource = resource[5:]
if resource.startswith("@"):
resource = resource[1:]
_, host = resource.split("@", 1)
resource = "acct:" + resource
is_404 = False
for i, proto in enumerate(protos):
try:
url = f"{proto}://{host}/.well-known/webfinger"
resp = ap.get(url, params={"resource": resource})
break
except httpx.HTTPStatusError as http_error:
logger.exception("HTTP error")
if http_error.response.status_code in [403, 404, 410]:
is_404 = True
continue
raise
except httpx.HTTPError:
logger.exception("req failed")
# If we tried https first and the domain is "http only"
if i == 0:
continue
break
if is_404:
return None
return resp
def get_remote_follow_template(resource: str) -> str | None:
data = webfinger(resource)
if data is None:
return None
for link in data["links"]:
if link.get("rel") == "http://ostatus.org/schema/1.0/subscribe":
return link.get("template")
return None
def get_actor_url(resource: str) -> str | None:
"""Mastodon-like WebFinger resolution to retrieve the activity stream Actor URL.
Returns:
the Actor URL or None if the resolution failed.
"""
data = webfinger(resource)
if data is None:
return None
for link in data["links"]:
if (
link.get("rel") == "self"
and link.get("type") == "application/activity+json"
):
return link.get("href")
return None

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boussole.json 100644
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{
"SOURCES_PATH": "scss",
"TARGET_PATH": "app/static/css",
"LIBRARY_PATHS": [],
"OUTPUT_STYLES": "nested",
"SOURCE_COMMENTS": false,
"EXCLUDES": []
}

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data/.gitignore vendored 100644
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*
!uploads/
!.gitignore

2
data/uploads/.gitignore vendored 100644
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*
!.gitignore

1697
poetry.lock generated 100644
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68
pyproject.toml 100644
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[tool.poetry]
name = "microblogpub"
version = "2.0.0"
description = ""
authors = ["Thomas Sileo <t@a4.io>"]
license = "AGPL-3.0"
[tool.poetry.dependencies]
python = "^3.10"
Jinja2 = "^3.1.2"
fastapi = "^0.78.0"
uvicorn = "^0.17.6"
pycryptodome = "^3.14.1"
bcrypt = "^3.2.2"
itsdangerous = "^2.1.2"
python-multipart = "^0.0.5"
tomli = "^2.0.1"
httpx = "^0.23.0"
timeago = "^1.0.15"
SQLAlchemy = {extras = ["mypy"], version = "^1.4.37"}
alembic = "^1.8.0"
bleach = "^5.0.0"
requests = "^2.27.1"
Markdown = "^3.3.7"
prompt-toolkit = "^3.0.29"
tomli-w = "^1.0.0"
python-dateutil = "^2.8.2"
bs4 = "^0.0.1"
html5lib = "^1.1"
mf2py = "^1.1.2"
Pygments = "^2.12.0"
types-python-dateutil = "^2.8.17"
loguru = "^0.6.0"
mdx-linkify = "^2.1"
[tool.poetry.dev-dependencies]
black = "^22.3.0"
flake8 = "^4.0.1"
mypy = "^0.960"
isort = "^5.10.1"
types-requests = "^2.27.29"
invoke = "^1.7.1"
libsass = "^0.21.0"
pytest = "^7.1.2"
respx = "^0.19.2"
boussole = "^2.0.0"
types-bleach = "^5.0.2"
types-Markdown = "^3.3.28"
factory-boy = "^3.2.1"
pytest-asyncio = "^0.18.3"
[build-system]
requires = ["poetry-core>=1.0.0"]
build-backend = "poetry.core.masonry.api"
[tool.isort]
profile = "black"
[tool.mypy]
exclude = ["alembic/versions/"]
plugins = ["sqlalchemy.ext.mypy.plugin", "pydantic.mypy"]
[tool.black]
extend-exclude = '''
/(
| alembic/versions
)/
'''

85
scripts/config_wizard.py 100644
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"""Basic wizard for setting up microblog.pub configuration files."""
import os
import sys
from pathlib import Path
from typing import Any
import bcrypt
import tomli_w
from markdown import markdown # type: ignore
from prompt_toolkit import prompt
from app.key import generate_key
from app.key import key_exists
def main() -> None:
print("Welcome to microblog.pub setup wizard\n")
print("Generating key...")
if key_exists():
yn = ""
while yn not in ["y", "n"]:
yn = prompt(
"WARNING, a key already exists, overwrite it? (y/n): ", default="n"
).lower()
if yn == "y":
generate_key()
else:
generate_key()
config_file = Path("data/me.toml")
if config_file.exists():
# Spit out the relative path for the "config artifacts"
rconfig_file = "data/me.toml"
print(
f"Existing setup detected, please delete {rconfig_file} "
"before restarting the wizard"
)
sys.exit(2)
dat: dict[str, Any] = {}
print("Your identity will be @{username}@{domain}")
dat["domain"] = prompt("domain: ")
dat["username"] = prompt("username: ")
dat["admin_password"] = bcrypt.hashpw(
prompt("admin password: ", is_password=True).encode(), bcrypt.gensalt()
).decode()
dat["name"] = prompt("name (e.g. John Doe): ", default=dat["username"])
dat["summary"] = markdown(
prompt(
(
"summary (short description, in markdown, "
"press [ESC] then [ENTER] to submit):\n"
),
multiline=True,
)
)
dat["https"] = True
proto = "https"
yn = ""
while yn not in ["y", "n"]:
yn = prompt("will the site be served via https? (y/n): ", default="y").lower()
if yn == "n":
dat["https"] = False
proto = "http"
print("Note that you can put your icon/avatar in the static/ directory")
dat["icon_url"] = prompt(
"icon URL: ", default=f'{proto}://{dat["domain"]}/static/nopic.png'
)
dat["secret"] = os.urandom(16).hex()
with config_file.open("w") as f:
f.write(tomli_w.dumps(dat))
print("Done")
sys.exit(0)
if __name__ == "__main__":
try:
main()
except KeyboardInterrupt:
print("Aborted")
sys.exit(1)

135
scss/main.scss 100644
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body {
margin: 0;
padding: 0;
display: flex;
min-height: 100vh;
flex-direction: column;
}
#main {
flex: 1;
}
main {
max-width: 800px;
margin: 20px auto;
}
footer {
max-width: 800px;
margin: 20px auto;
}
#notifications, #followers, #following {
ul {
list-style-type: none;
margin: 0;
padding: 0;
}
li {
display: inline-block;
}
}
.actor-box {
a {
text-decoration: none;
}
}
#admin {
.navbar {
display: grid;
grid-template-rows: auto;
grid-template-columns: 1fr;
grid-auto-flow: dense;
justify-items: stretch;
align-items: stretch;
column-gap: 20px;
}
.logo {
grid-column:-3;
padding: 5px;
}
.menus {
display: flex;
flex-direction: row;
justify-content: start;
grid-column: 1;
}
.menus * {
padding: 5px;
}
}
nav.flexbox {
display: flex;
justify-content: space-between;
align-items: center;
ul {
display: flex;
align-items: center;
list-style-type: none;
margin: 0;
padding: 0;
}
ul li {
margin-right: 20px;
&:last-child {
margin-right: 0px;
}
}
}
#admin {
a.active {
font-weight: bold;
text-decoration: none;
}
}
.activity-wrap {
margin: 0 auto;
padding: 30px 0;
.actor-icon {
width:48px;
margin-right: 15px;
img {
max-width: 48px;
}
}
.activity-content {
display: flex;
align-items:flex-start;
.activity-header {
width: 100%;
strong {
font-weight:bold;
}
span {
font-weight:normal;
margin-left: 5px;
}
.activity-date { float:right; }
}
}
.activity-attachment {
padding-left: 60px;
img, audio, video {
width: 100%;
max-width: 740px;
margin: 30px 0;
}
}
.activity-bar {
display: flex;
margin-left: 60px;
margin-top: 10px;
.bar-item {
display: flex;
margin-right: 20px;
}
}
}

67
tasks.py 100644
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from typing import Optional
from invoke import Context # type: ignore
from invoke import run # type: ignore
from invoke import task # type: ignore
@task
def generate_db_migration(ctx, message):
# type: (Context, str) -> None
run(f'poetry run alembic revision --autogenerate -m "{message}"', echo=True)
@task
def migrate_db(ctx):
# type: (Context) -> None
run("poetry run alembic upgrade head", echo=True)
@task
def autoformat(ctx):
# type: (Context) -> None
run("black .", echo=True)
run("isort -sl .", echo=True)
@task
def lint(ctx):
# type: (Context) -> None
run("black --check .", echo=True)
run("isort -sl --check-only .", echo=True)
run("flake8 .", echo=True)
run("mypy .", echo=True)
@task
def compile_scss(ctx, watch=False):
# type: (Context, bool) -> None
if watch:
run("poetry run boussole watch", echo=True)
else:
run("poetry run boussole compile", echo=True)
@task
def uvicorn(ctx):
# type: (Context) -> None
run("poetry run uvicorn app.main:app --no-server-header", pty=True, echo=True)
@task
def process_outgoing_activities(ctx):
# type: (Context) -> None
run("poetry run python app/process_outgoing_activities.py", pty=True, echo=True)
@task
def tests(ctx, k=None):
# type: (Context, Optional[str]) -> None
pytest_args = " -vvv"
if k:
pytest_args += f" -k {k}"
run(
f"MICROBLOGPUB_CONFIG_FILE=tests.toml pytest tests{pytest_args}",
pty=True,
echo=True,
)

0
tests/__init__.py 100644
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49
tests/conftest.py 100644
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from typing import Generator
import pytest
from fastapi.testclient import TestClient
from sqlalchemy import orm
from app.database import Base
from app.database import engine
from app.database import get_db
from app.main import app
_Session = orm.sessionmaker(bind=engine, autocommit=False, autoflush=False)
def _get_db_for_testing() -> Generator[orm.Session, None, None]:
session = _Session()
try:
yield session
finally:
session.close()
@pytest.fixture
def db() -> Generator:
Base.metadata.create_all(bind=engine)
yield orm.scoped_session(orm.sessionmaker(bind=engine))
try:
Base.metadata.drop_all(bind=engine)
except Exception:
# XXX: for some reason, the teardown occasionally fails because of this
pass
@pytest.fixture
def exclude_fastapi_middleware():
"""Workaround for https://github.com/encode/starlette/issues/472"""
user_middleware = app.user_middleware.copy()
app.user_middleware = []
app.middleware_stack = app.build_middleware_stack()
yield
app.user_middleware = user_middleware
app.middleware_stack = app.build_middleware_stack()
@pytest.fixture
def client(db, exclude_fastapi_middleware) -> Generator:
app.dependency_overrides[get_db] = _get_db_for_testing
with TestClient(app) as c:
yield c

140
tests/factories.py 100644
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from uuid import uuid4
import factory # type: ignore
from Crypto.PublicKey import RSA
from sqlalchemy import orm
from app import activitypub as ap
from app import actor
from app import models
from app.actor import RemoteActor
from app.ap_object import RemoteObject
from app.database import engine
_Session = orm.scoped_session(orm.sessionmaker(bind=engine))
def generate_key() -> tuple[str, str]:
k = RSA.generate(1024)
return k.exportKey("PEM").decode(), k.publickey().exportKey("PEM").decode()
def build_follow_activity(
from_remote_actor: actor.RemoteActor,
for_remote_actor: actor.RemoteActor,
outbox_public_id: str | None = None,
) -> ap.RawObject:
return {
"@context": ap.AS_CTX,
"type": "Follow",
"id": from_remote_actor.ap_id + "/follow/" + (outbox_public_id or uuid4().hex),
"actor": from_remote_actor.ap_id,
"object": for_remote_actor.ap_id,
}
def build_accept_activity(
from_remote_actor: actor.RemoteActor,
for_remote_object: RemoteObject,
outbox_public_id: str | None = None,
) -> ap.RawObject:
return {
"@context": ap.AS_CTX,
"type": "Accept",
"id": from_remote_actor.ap_id + "/accept/" + (outbox_public_id or uuid4().hex),
"actor": from_remote_actor.ap_id,
"object": for_remote_object.ap_id,
}
class BaseModelMeta:
sqlalchemy_session = _Session
sqlalchemy_session_persistence = "commit"
class RemoteActorFactory(factory.Factory):
class Meta:
model = RemoteActor
exclude = (
"base_url",
"username",
"public_key",
)
class Params:
icon_url = None
summary = "I like unit tests"
ap_actor = factory.LazyAttribute(
lambda o: {
"@context": ap.AS_CTX,
"type": "Person",
"id": o.base_url,
"following": o.base_url + "/following",
"followers": o.base_url + "/followers",
# "featured": ID + "/featured",
"inbox": o.base_url + "/inbox",
"outbox": o.base_url + "/outbox",
"preferredUsername": o.username,
"name": o.username,
"summary": o.summary,
"endpoints": {},
"url": o.base_url,
"manuallyApprovesFollowers": False,
"attachment": [],
"icon": {},
"publicKey": {
"id": f"{o.base_url}#main-key",
"owner": o.base_url,
"publicKeyPem": o.public_key,
},
}
)
class ActorFactory(factory.alchemy.SQLAlchemyModelFactory):
class Meta(BaseModelMeta):
model = models.Actor
# ap_actor
# ap_id
ap_type = "Person"
@classmethod
def from_remote_actor(cls, ra):
return cls(
ap_type=ra.ap_type,
ap_actor=ra.ap_actor,
ap_id=ra.ap_id,
)
class OutboxObjectFactory(factory.alchemy.SQLAlchemyModelFactory):
class Meta(BaseModelMeta):
model = models.OutboxObject
# public_id
# relates_to_inbox_object_id
# relates_to_outbox_object_id
@classmethod
def from_remote_object(cls, public_id, ro):
return cls(
public_id=public_id,
ap_type=ro.ap_type,
ap_id=ro.ap_id,
ap_context=ro.context,
ap_object=ro.ap_object,
visibility=ro.visibility,
og_meta=ro.og_meta,
activity_object_ap_id=ro.activity_object_ap_id,
is_hidden_from_homepage=True if ro.in_reply_to else False,
)
class OutgoingActivityFactory(factory.alchemy.SQLAlchemyModelFactory):
class Meta(BaseModelMeta):
model = models.OutgoingActivity
# recipient
# outbox_object_id

27
tests/test.key 100644
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@ -0,0 +1,27 @@
-----BEGIN RSA PRIVATE KEY-----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-----END RSA PRIVATE KEY-----

46
tests/test_actor.py 100644
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import httpx
import respx
from app import models
from app.actor import fetch_actor
from app.database import Session
from tests import factories
def test_fetch_actor(db: Session, respx_mock) -> None:
# Given a remote actor
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
# When fetching this actor for the first time
saved_actor = fetch_actor(db, ra.ap_id)
# Then it has been fetched and saved in DB
assert respx.calls.call_count == 1
assert db.query(models.Actor).one().ap_id == saved_actor.ap_id
# When fetching it a second time
actor_from_db = fetch_actor(db, ra.ap_id)
# Then it's read from the DB
assert actor_from_db.ap_id == ra.ap_id
assert db.query(models.Actor).count() == 1
assert respx.calls.call_count == 1
def test_sqlalchemy_factory(db: Session) -> None:
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
actor_in_db = factories.ActorFactory(
ap_type=ra.ap_type,
ap_actor=ra.ap_actor,
ap_id=ra.ap_id,
)
assert actor_in_db.id == db.query(models.Actor).one().id

21
tests/test_admin.py 100644
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from fastapi.testclient import TestClient
from app.main import app
def test_admin_endpoints_are_authenticated(client: TestClient):
routes_tested = []
for route in app.routes:
if not route.path.startswith("/admin") or route.path == "/admin/login":
continue
for method in route.methods:
resp = client.request(method, route.path)
# Admin routes should redirect to the login page
assert resp.status_code == 302, f"{method} {route.path} is unauthenticated"
assert resp.headers.get("Location") == "http://testserver/admin/login"
routes_tested.append((method, route.path))
assert len(routes_tested) > 0

177
tests/test_httpsig.py 100644
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from typing import Any
import fastapi
import httpx
import pytest
import respx
from fastapi.testclient import TestClient
from app import activitypub as ap
from app import httpsig
from app.httpsig import HTTPSigInfo
from app.key import Key
from tests import factories
_test_app = fastapi.FastAPI()
def _httpsig_info_to_dict(httpsig_info: HTTPSigInfo) -> dict[str, Any]:
return {
"has_valid_signature": httpsig_info.has_valid_signature,
"signed_by_ap_actor_id": httpsig_info.signed_by_ap_actor_id,
}
@_test_app.get("/httpsig_checker")
def get_httpsig_checker(
httpsig_info: httpsig.HTTPSigInfo = fastapi.Depends(httpsig.httpsig_checker),
):
return _httpsig_info_to_dict(httpsig_info)
@_test_app.post("/enforce_httpsig")
async def post_enforce_httpsig(
request: fastapi.Request,
httpsig_info: httpsig.HTTPSigInfo = fastapi.Depends(httpsig.enforce_httpsig),
):
await request.json()
return _httpsig_info_to_dict(httpsig_info)
def test_enforce_httpsig__no_signature(
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
with TestClient(_test_app) as client:
response = client.post(
"/enforce_httpsig",
headers={"Content-Type": ap.AS_CTX},
json={"enforce_httpsig": True},
)
assert response.status_code == 401
assert response.json()["detail"] == "Invalid HTTP sig"
@pytest.mark.asyncio
async def test_enforce_httpsig__with_valid_signature(
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
privkey, pubkey = factories.generate_key()
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key=pubkey,
)
k = Key(ra.ap_id, f"{ra.ap_id}#main-key")
k.load(privkey)
auth = httpsig.HTTPXSigAuth(k)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
httpsig._get_public_key.cache_clear()
async with httpx.AsyncClient(app=_test_app, base_url="http://test") as client:
response = await client.post(
"/enforce_httpsig",
headers={"Content-Type": ap.AS_CTX},
json={"enforce_httpsig": True},
auth=auth, # type: ignore
)
assert response.status_code == 200
json_response = response.json()
assert json_response["has_valid_signature"] is True
assert json_response["signed_by_ap_actor_id"] == ra.ap_id
def test_httpsig_checker__no_signature(
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
with TestClient(_test_app) as client:
response = client.get(
"/httpsig_checker",
headers={"Accept": ap.AS_CTX},
)
assert response.status_code == 200
json_response = response.json()
assert json_response["has_valid_signature"] is False
assert json_response["signed_by_ap_actor_id"] is None
@pytest.mark.asyncio
async def test_httpsig_checker__with_valid_signature(
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
privkey, pubkey = factories.generate_key()
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key=pubkey,
)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
k = Key(ra.ap_id, f"{ra.ap_id}#main-key")
k.load(privkey)
auth = httpsig.HTTPXSigAuth(k)
httpsig._get_public_key.cache_clear()
async with httpx.AsyncClient(app=_test_app, base_url="http://test") as client:
response = await client.get(
"/httpsig_checker",
headers={"Accept": ap.AS_CTX},
auth=auth, # type: ignore
)
assert response.status_code == 200
json_response = response.json()
assert json_response["has_valid_signature"] is True
assert json_response["signed_by_ap_actor_id"] == ra.ap_id
@pytest.mark.asyncio
async def test_httpsig_checker__with_invvalid_signature(
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
privkey, pubkey = factories.generate_key()
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key=pubkey,
)
k = Key(ra.ap_id, f"{ra.ap_id}#main-key")
k.load(privkey)
auth = httpsig.HTTPXSigAuth(k)
ra2_privkey, ra2_pubkey = factories.generate_key()
ra2 = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key=ra2_pubkey,
)
assert ra.ap_id == ra2.ap_id
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra2.ap_actor))
httpsig._get_public_key.cache_clear()
async with httpx.AsyncClient(app=_test_app, base_url="http://test") as client:
response = await client.get(
"/httpsig_checker",
headers={"Accept": ap.AS_CTX},
auth=auth, # type: ignore
)
assert response.status_code == 200
json_response = response.json()
assert json_response["has_valid_signature"] is False
assert json_response["signed_by_ap_actor_id"] == ra.ap_id

134
tests/test_inbox.py 100644
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from uuid import uuid4
import httpx
import respx
from fastapi.testclient import TestClient
from app import activitypub as ap
from app import models
from app.actor import LOCAL_ACTOR
from app.ap_object import RemoteObject
from app.database import Session
from tests import factories
from tests.utils import mock_httpsig_checker
def test_inbox_requires_httpsig(
client: TestClient,
):
response = client.post(
"/inbox",
headers={"Content-Type": ap.AS_CTX},
json={},
)
assert response.status_code == 401
assert response.json()["detail"] == "Invalid HTTP sig"
def test_inbox_follow_request(
db: Session,
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
# When sending a Follow activity
follow_activity = RemoteObject(
factories.build_follow_activity(
from_remote_actor=ra,
for_remote_actor=LOCAL_ACTOR,
)
)
with mock_httpsig_checker(ra):
response = client.post(
"/inbox",
headers={"Content-Type": ap.AS_CTX},
json=follow_activity.ap_object,
)
# Then the server returns a 204
assert response.status_code == 204
# And the actor was saved in DB
saved_actor = db.query(models.Actor).one()
assert saved_actor.ap_id == ra.ap_id
# And the Follow activity was saved in the inbox
inbox_object = db.query(models.InboxObject).one()
assert inbox_object.ap_object == follow_activity.ap_object
# And a follower was internally created
follower = db.query(models.Follower).one()
assert follower.ap_actor_id == ra.ap_id
assert follower.actor_id == saved_actor.id
assert follower.inbox_object_id == inbox_object.id
# And an Accept activity was created in the outbox
outbox_object = db.query(models.OutboxObject).one()
assert outbox_object.ap_type == "Accept"
assert outbox_object.activity_object_ap_id == follow_activity.ap_id
# And an outgoing activity was created to track the Accept activity delivery
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.outbox_object_id == outbox_object.id
def test_inbox_accept_follow_request(
db: Session,
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
actor_in_db = factories.ActorFactory.from_remote_actor(ra)
# And a Follow activity in the outbox
follow_id = uuid4().hex
follow_from_outbox = RemoteObject(
factories.build_follow_activity(
from_remote_actor=LOCAL_ACTOR,
for_remote_actor=ra,
outbox_public_id=follow_id,
)
)
outbox_object = factories.OutboxObjectFactory.from_remote_object(
follow_id, follow_from_outbox
)
# When sending a Accept activity
accept_activity = RemoteObject(
factories.build_accept_activity(
from_remote_actor=ra,
for_remote_object=follow_from_outbox,
)
)
with mock_httpsig_checker(ra):
response = client.post(
"/inbox",
headers={"Content-Type": ap.AS_CTX},
json=accept_activity.ap_object,
)
# Then the server returns a 204
assert response.status_code == 204
# And the Accept activity was saved in the inbox
inbox_activity = db.query(models.InboxObject).one()
assert inbox_activity.ap_type == "Accept"
assert inbox_activity.relates_to_outbox_object_id == outbox_object.id
assert inbox_activity.actor_id == actor_in_db.id
# And a following entry was created internally
following = db.query(models.Following).one()
assert following.ap_actor_id == actor_in_db.ap_id

46
tests/test_outbox.py 100644
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import httpx
import respx
from fastapi.testclient import TestClient
from app import models
from app.config import generate_csrf_token
from app.database import Session
from tests import factories
from tests.utils import generate_admin_session_cookies
def test_send_follow_request(
db: Session,
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
# Given a remote actor
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
respx_mock.get(ra.ap_id).mock(return_value=httpx.Response(200, json=ra.ap_actor))
response = client.post(
"/admin/actions/follow",
data={
"redirect_url": "http://testserver/",
"ap_actor_id": ra.ap_id,
"csrf_token": generate_csrf_token(),
},
cookies=generate_admin_session_cookies(),
)
# Then the server returns a 302
assert response.status_code == 302
assert response.headers.get("Location") == "http://testserver/"
# And the Follow activity was created in the outbox
outbox_object = db.query(models.OutboxObject).one()
assert outbox_object.ap_type == "Follow"
assert outbox_object.activity_object_ap_id == ra.ap_id
# And an outgoing activity was queued
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.outbox_object_id == outbox_object.id

180
tests/test_process_outgoing_activities.py 100644
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from uuid import uuid4
import httpx
import respx
from fastapi.testclient import TestClient
from app import models
from app.actor import LOCAL_ACTOR
from app.ap_object import RemoteObject
from app.database import Session
from app.process_outgoing_activities import _MAX_RETRIES
from app.process_outgoing_activities import new_outgoing_activity
from app.process_outgoing_activities import process_next_outgoing_activity
from tests import factories
def _setup_outbox_object() -> models.OutboxObject:
ra = factories.RemoteActorFactory(
base_url="https://example.com",
username="toto",
public_key="pk",
)
# And a Follow activity in the outbox
follow_id = uuid4().hex
follow_from_outbox = RemoteObject(
factories.build_follow_activity(
from_remote_actor=LOCAL_ACTOR,
for_remote_actor=ra,
outbox_public_id=follow_id,
)
)
outbox_object = factories.OutboxObjectFactory.from_remote_object(
follow_id, follow_from_outbox
)
return outbox_object
def test_new_outgoing_activity(
db: Session,
client: TestClient,
respx_mock: respx.MockRouter,
) -> None:
outbox_object = _setup_outbox_object()
inbox_url = "https://example.com/inbox"
# When queuing the activity
outgoing_activity = new_outgoing_activity(db, inbox_url, outbox_object.id)
assert db.query(models.OutgoingActivity).one() == outgoing_activity
assert outgoing_activity.outbox_object_id == outbox_object.id
assert outgoing_activity.recipient == inbox_url
def test_process_next_outgoing_activity__no_next_activity(
db: Session,
respx_mock: respx.MockRouter,
) -> None:
assert process_next_outgoing_activity(db) is False
def test_process_next_outgoing_activity__server_200(
db: Session,
respx_mock: respx.MockRouter,
) -> None:
# And an outgoing activity
outbox_object = _setup_outbox_object()
recipient_inbox_url = "https://example.com/users/toto/inbox"
respx_mock.post(recipient_inbox_url).mock(return_value=httpx.Response(204))
outgoing_activity = factories.OutgoingActivityFactory(
recipient=recipient_inbox_url,
outbox_object_id=outbox_object.id,
)
# When processing the next outgoing activity
# Then it is processed
assert process_next_outgoing_activity(db) is True
assert respx_mock.calls.call_count == 1
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.is_sent is True
assert outgoing_activity.last_status_code == 204
assert outgoing_activity.error is None
assert outgoing_activity.is_errored is False
def test_process_next_outgoing_activity__error_500(
db: Session,
respx_mock: respx.MockRouter,
) -> None:
outbox_object = _setup_outbox_object()
recipient_inbox_url = "https://example.com/inbox"
respx_mock.post(recipient_inbox_url).mock(
return_value=httpx.Response(500, text="oops")
)
# And an outgoing activity
outgoing_activity = factories.OutgoingActivityFactory(
recipient=recipient_inbox_url,
outbox_object_id=outbox_object.id,
)
# When processing the next outgoing activity
# Then it is processed
assert process_next_outgoing_activity(db) is True
assert respx_mock.calls.call_count == 1
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.is_sent is False
assert outgoing_activity.last_status_code == 500
assert outgoing_activity.last_response == "oops"
assert outgoing_activity.is_errored is False
assert outgoing_activity.tries == 1
def test_process_next_outgoing_activity__connect_error(
db: Session,
respx_mock: respx.MockRouter,
) -> None:
outbox_object = _setup_outbox_object()
recipient_inbox_url = "https://example.com/inbox"
respx_mock.post(recipient_inbox_url).mock(side_effect=httpx.ConnectError)
# And an outgoing activity
outgoing_activity = factories.OutgoingActivityFactory(
recipient=recipient_inbox_url,
outbox_object_id=outbox_object.id,
)
# When processing the next outgoing activity
# Then it is processed
assert process_next_outgoing_activity(db) is True
assert respx_mock.calls.call_count == 1
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.is_sent is False
assert outgoing_activity.error is not None
assert outgoing_activity.tries == 1
def test_process_next_outgoing_activity__errored(
db: Session,
respx_mock: respx.MockRouter,
) -> None:
outbox_object = _setup_outbox_object()
recipient_inbox_url = "https://example.com/inbox"
respx_mock.post(recipient_inbox_url).mock(
return_value=httpx.Response(500, text="oops")
)
# And an outgoing activity
outgoing_activity = factories.OutgoingActivityFactory(
recipient=recipient_inbox_url,
outbox_object_id=outbox_object.id,
tries=_MAX_RETRIES - 1,
)
# When processing the next outgoing activity
# Then it is processed
assert process_next_outgoing_activity(db) is True
assert respx_mock.calls.call_count == 1
outgoing_activity = db.query(models.OutgoingActivity).one()
assert outgoing_activity.is_sent is False
assert outgoing_activity.last_status_code == 500
assert outgoing_activity.last_response == "oops"
assert outgoing_activity.is_errored is True
# And it is skipped from processing
assert process_next_outgoing_activity(db) is False
# TODO(ts):
# - parse retry after

30
tests/test_public.py 100644
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@ -0,0 +1,30 @@
import pytest
from fastapi.testclient import TestClient
from app.database import Session
_ACCEPTED_AP_HEADERS = [
"application/activity+json",
"application/activity+json; charset=utf-8",
"application/ld+json",
'application/ld+json; profile="https://www.w3.org/ns/activitystreams"',
]
@pytest.mark.anyio
def test_index(db: Session, client: TestClient):
response = client.get("/")
assert response.status_code == 200
@pytest.mark.parametrize("accept", _ACCEPTED_AP_HEADERS)
def test__ap_version(client, db, accept: str) -> None:
response = client.get("/followers", headers={"Accept": accept})
assert response.status_code == 200
assert response.headers["content-type"] == "application/activity+json"
assert response.json()["id"].endswith("/followers")
def test__html(client, db) -> None:
response = client.get("/followers", headers={"Accept": "application/activity+json"})
assert response.status_code == 200

29
tests/utils.py 100644
View File

@ -0,0 +1,29 @@
from contextlib import contextmanager
import fastapi
from app import actor
from app import httpsig
from app.config import session_serializer
from app.main import app
@contextmanager
def mock_httpsig_checker(ra: actor.RemoteActor):
async def httpsig_checker(
request: fastapi.Request,
) -> httpsig.HTTPSigInfo:
return httpsig.HTTPSigInfo(
has_valid_signature=True,
signed_by_ap_actor_id=ra.ap_id,
)
app.dependency_overrides[httpsig.httpsig_checker] = httpsig_checker
try:
yield
finally:
del app.dependency_overrides[httpsig.httpsig_checker]
def generate_admin_session_cookies() -> dict[str, str]:
return {"session": session_serializer.dumps({"is_logged_in": True})}