create Message class

This commit is contained in:
Izalia Mae 2022-11-07 05:30:13 -05:00
parent 3b85e2c2f2
commit c66f9d34b3
4 changed files with 229 additions and 146 deletions

View file

@ -81,9 +81,7 @@ def cli_inbox_follow(actor):
if not actor_data:
return click.echo(f'Error: Failed to fetch actor: {actor}')
inbox = misc.get_actor_inbox(actor_data)
database.add_inbox(inbox)
database.add_inbox(actor_data.shared_inbox)
database.save()
run_in_loop(misc.follow_remote_actor, actor)

View file

@ -4,6 +4,7 @@ import json
import logging
import socket
import traceback
import uuid
from Crypto.Hash import SHA, SHA256, SHA512
from Crypto.PublicKey import RSA
@ -57,27 +58,12 @@ def create_signature_header(headers):
return ','.join(chunks)
def distill_object_id(activity):
logging.debug(f'>> determining object ID for {activity["object"]}')
try:
return activity['object']['id']
except TypeError:
return activity['object']
def distill_inboxes(actor, object_id):
database = app['database']
origin_hostname = urlparse(object_id).hostname
actor_inbox = get_actor_inbox(actor)
targets = []
for inbox in database.inboxes:
if inbox != actor_inbox or urlparse(inbox).hostname != origin_hostname:
targets.append(inbox)
return targets
if inbox != actor.shared_inbox or urlparse(inbox).hostname != urlparse(object_id).hostname:
yield inbox
def generate_body_digest(body):
@ -93,10 +79,6 @@ def generate_body_digest(body):
return bodyhash
def get_actor_inbox(actor):
return actor.get('endpoints', {}).get('sharedInbox', actor['inbox'])
def sign_signing_string(sigstring, key):
pkcs = PKCS1_v1_5.new(key)
h = SHA256.new()
@ -162,14 +144,11 @@ async def follow_remote_actor(actor_uri):
config = app['config']
actor = await request(actor_uri)
inbox = get_actor_inbox(actor)
if not actor:
logging.error(f'failed to fetch actor at: {actor_uri}')
return
logging.verbose(f'sending follow request: {actor_uri}')
message = {
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Follow",
@ -179,7 +158,8 @@ async def follow_remote_actor(actor_uri):
"actor": f"https://{config.host}/actor"
}
await request(inbox, message)
logging.verbose(f'sending follow request: {actor_uri}')
await request(actor.shared_inbox, message)
async def unfollow_remote_actor(actor_uri):
@ -191,9 +171,6 @@ async def unfollow_remote_actor(actor_uri):
logging.error(f'failed to fetch actor: {actor_uri}')
return
inbox = get_actor_inbox(actor)
logging.verbose(f'sending unfollow request to inbox: {inbox}')
message = {
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Undo",
@ -208,7 +185,8 @@ async def unfollow_remote_actor(actor_uri):
"actor": f"https://{config.host}/actor"
}
await request(inbox, message)
logging.verbose(f'sending unfollow request to inbox: {actor.shared_inbox}')
await request(actor.shared_inbox, message)
async def request(uri, data=None, force=False, sign_headers=True, activity=True):
@ -265,15 +243,27 @@ async def request(uri, data=None, force=False, sign_headers=True, activity=True)
async with session.request(method, uri, headers=headers, data=data) as resp:
## aiohttp has been known to leak if the response hasn't been read,
## so we're just gonna read the request no matter what
resp_data = await resp.json()
resp_data = await resp.read()
if resp.status not in [200, 202]:
## Not expecting a response, so just return
if resp.status == 202:
return
elif resp.status != 200:
if not resp_data:
logging.verbose(f'Received error when requesting {uri}: {resp.status} {resp_data}')
return
return logging.verbose(f'Received error when requesting {uri}: {resp.status} {resp_data}')
logging.verbose(f'Received error when sending {action} to {uri}: {resp.status} {resp_data}')
return
return logging.verbose(f'Received error when sending {action} to {uri}: {resp.status} {resp_data}')
if resp.content_type == 'application/activity+json':
resp_data = await resp.json(loads=Message.new_from_json)
elif resp.content_type == 'application/json':
resp_data = await resp.json(loads=DotDict.new_from_json)
else:
logging.verbose(f'Invalid Content-Type for "{url}": {resp.content_type}')
return logging.debug(f'Response: {resp_data}')
logging.debug(f'{uri} >> resp {resp_data}')
@ -354,8 +344,127 @@ class DotDict(dict):
@classmethod
def new_from_json(cls, data):
if not data:
raise JSONDecodeError('Empty body', data, 1)
try:
return cls(json.loads(data))
except ValueError:
raise JSONDecodeError('Invalid body', data, 1)
def to_json(self, indent=None):
return json.dumps(self, indent=indent)
class Message(DotDict):
@classmethod
def new_actor(cls, host, pubkey, description=None):
return cls({
'@context': 'https://www.w3.org/ns/activitystreams',
'id': f'https://{host}/actor',
'type': 'Application',
'preferredUsername': 'relay',
'name': 'ActivityRelay',
'summary': description or 'ActivityRelay bot',
'followers': f'https://{host}/followers',
'following': f'https://{host}/following',
'inbox': f'https://{host}/inbox',
'url': f'https://{host}/inbox',
'endpoints': {
'sharedInbox': f'https://{host}/inbox'
},
'publicKey': {
'id': f'https://{host}/actor#main-key',
'owner': f'https://{host}/actor',
'publicKeyPem': pubkey
}
})
@classmethod
def new_announce(cls, host, object):
return cls({
'@context': 'https://www.w3.org/ns/activitystreams',
'id': f'https://{host}/activities/{uuid.uuid4()}',
'type': 'Announce',
'to': [f'https://{host}/followers'],
'actor': f'https://{host}/actor',
'object': object
})
@classmethod
def new_follow(cls, host, actor):
return cls({
'@context': 'https://www.w3.org/ns/activitystreams',
'type': 'Follow',
'to': [actor],
'object': actor,
'id': f'https://{host}/activities/{uuid.uuid4()}',
'actor': f'https://{host}/actor'
})
@classmethod
def new_unfollow(cls, host, actor, follow):
return cls({
'@context': 'https://www.w3.org/ns/activitystreams',
'id': f'https://{host}/activities/{uuid.uuid4()}',
'type': 'Undo',
'to': [actor],
'actor': f'https://{host}/actor',
'object': follow
})
@classmethod
def new_response(cls, host, actor, followid, accept):
return cls({
'@context': 'https://www.w3.org/ns/activitystreams',
'id': f'https://{host}/activities/{uuid.uuid4()}',
'type': 'Accept' if accept else 'Reject',
'to': [actor],
'actor': f'https://{host}/actor',
'object': {
'id': followid,
'type': 'Follow',
'object': f'https://{host}/actor',
'actor': actor
}
})
# misc properties
@property
def domain(self):
return urlparse(self.id).hostname
# actor properties
@property
def pubkey(self):
return self.publicKey.publicKeyPem
@property
def shared_inbox(self):
return self.get('endpoints', {}).get('sharedInbox', self.inbox)
# activity properties
@property
def actorid(self):
if isinstance(self.actor, dict):
return self.actor.id
return self.actor
@property
def objectid(self):
if isinstance(self.object, dict):
return self.object.id
return self.object

View file

@ -6,113 +6,103 @@ from uuid import uuid4
from . import app, misc
async def handle_relay(actor, data, request):
async def handle_relay(request, actor, data, software):
cache = app['cache'].objects
object_id = misc.distill_object_id(data)
config = app['config']
if object_id in cache:
logging.verbose(f'already relayed {object_id} as {cache[object_id]}')
if data.objectid in cache:
logging.verbose(f'already relayed {data.objectid} as {cache[data.objectid]}')
return
logging.verbose(f'Relaying post from {actor["id"]}')
logging.verbose(f'Relaying post from {data.actorid}')
activity_id = f"https://{request.host}/activities/{uuid4()}"
message = {
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Announce",
"to": [f"https://{request.host}/followers"],
"actor": f"https://{request.host}/actor",
"object": object_id,
"id": activity_id
}
message = misc.Message.new_announce(
host = config.host,
object = data.objectid
)
logging.debug(f'>> relay: {message}')
inboxes = misc.distill_inboxes(actor, object_id)
inboxes = misc.distill_inboxes(actor, data.objectid)
futures = [misc.request(inbox, data=message) for inbox in inboxes]
asyncio.ensure_future(asyncio.gather(*futures))
cache[object_id] = activity_id
cache[data.objectid] = message.id
async def handle_forward(actor, data, request):
async def handle_forward(request, actor, data, software):
cache = app['cache'].objects
object_id = data['id']
config = app['config']
if object_id in cache:
logging.verbose(f'already forwarded {object_id}')
if data.id in cache:
logging.verbose(f'already forwarded {data.id}')
return
activity_id = f"https://{request.host}/activities/{uuid4()}"
message = misc.Message.new_announce(
host = config.host,
object = data
)
message = {
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Announce",
"to": [f"https://{request.host}/followers"],
"actor": f"https://{request.host}/actor",
"object": data,
"id": activity_id
}
logging.verbose(f'Forwarding post from {actor["id"]}')
logging.verbose(f'Forwarding post from {actor.id}')
logging.debug(f'>> Relay {data}')
inboxes = misc.distill_inboxes(actor, object_id)
inboxes = misc.distill_inboxes(actor, data.id)
futures = [misc.request(inbox, data=message) for inbox in inboxes]
asyncio.ensure_future(asyncio.gather(*futures))
cache[object_id] = activity_id
cache[data.id] = message.id
async def handle_follow(actor, data, request):
async def handle_follow(request, actor, data, software):
config = app['config']
database = app['database']
inbox = misc.get_actor_inbox(actor)
dbinbox = database.get_inbox(inbox)
if database.add_inbox(inbox, data.id):
database.set_followid(actor.id, data.id)
if not database.add_inbox(inbox, data['id']):
database.set_followid(inbox, data['id'])
database.save()
asyncio.ensure_future(misc.follow_remote_actor(actor['id']))
await misc.request(
actor.shared_inbox,
misc.Message.new_response(
host = config.host,
actor = actor.id,
followid = data.id,
accept = True
)
)
message = {
"@context": "https://www.w3.org/ns/activitystreams",
"type": "Accept",
"to": [actor["id"]],
"actor": config.actor,
# this is wrong per litepub, but mastodon < 2.4 is not compliant with that profile.
"object": {
"type": "Follow",
"id": data["id"],
"object": config.actor,
"actor": actor["id"]
},
"id": f"https://{request.host}/activities/{uuid4()}",
}
asyncio.ensure_future(misc.request(inbox, message))
# Are Akkoma and Pleroma the only two that expect a follow back?
# Ignoring only Mastodon for now
if software != 'mastodon':
misc.request(
actor.shared_inbox,
misc.Message.new_follow(
host = config.host,
actor = actor.id
)
)
async def handle_undo(actor, data, request):
async def handle_undo(request, actor, data, software):
## If the object is not a Follow, forward it
if data['object']['type'] != 'Follow':
return await handle_forward(actor, data, request)
return await handle_forward(request, actor, data, software)
database = app['database']
objectid = misc.distill_object_id(data)
if not database.del_inbox(actor['id'], objectid):
if not database.del_inbox(actor.domain, data.id):
return
database.save()
await misc.unfollow_remote_actor(actor['id'])
message = misc.Message.new_unfollow(
host = config.host,
actor = actor.id,
follow = data
)
await misc.request(actor.shared_inbox, message)
processors = {
@ -125,9 +115,9 @@ processors = {
}
async def run_processor(request, data, actor):
if data['type'] not in processors:
async def run_processor(request, actor, data, software):
if data.type not in processors:
return
logging.verbose(f'New activity from actor: {actor["id"]} {data["type"]}')
return await processors[data['type']](actor, data, request)
logging.verbose(f'New "{data.type}" from actor: {actor.id}')
return await processors[data.type](request, actor, data, software)

View file

@ -3,10 +3,10 @@ import subprocess
import traceback
from aiohttp.web import HTTPForbidden, HTTPUnauthorized, Response, json_response
from urllib.parse import urlparse
from . import __version__, app, misc
from .http_debug import STATS
from .misc import Message
from .processors import run_processor
@ -48,28 +48,13 @@ a:hover {{ color: #8AF; }}
async def actor(request):
config = app['config']
database = app['database']
data = {
"@context": "https://www.w3.org/ns/activitystreams",
"endpoints": {
"sharedInbox": f"https://{request.host}/inbox"
},
"followers": f"https://{request.host}/followers",
"following": f"https://{request.host}/following",
"inbox": f"https://{request.host}/inbox",
"name": "ActivityRelay",
"type": "Application",
"id": f"https://{request.host}/actor",
"publicKey": {
"id": f"https://{request.host}/actor#main-key",
"owner": f"https://{request.host}/actor",
"publicKeyPem": database.pubkey
},
"summary": "ActivityRelay bot",
"preferredUsername": "relay",
"url": f"https://{request.host}/actor"
}
data = Message.new_actor(
host = config.host,
pubkey = database.pubkey
)
return json_response(data, content_type='application/activity+json')
@ -85,9 +70,10 @@ async def inbox(request):
## read message and get actor id and domain
try:
data = await request.json()
actor_id = data['actor']
actor_domain = urlparse(actor_id).hostname
data = await request.json(loads=Message.new_from_json)
if 'actor' not in data:
raise KeyError('actor')
## reject if there is no actor in the message
except KeyError:
@ -99,44 +85,44 @@ async def inbox(request):
logging.verbose('Failed to parse inbox message')
raise HTTPUnauthorized(body='failed to parse message')
actor = await misc.request(actor_id)
actor = await misc.request(data.actorid)
## reject if actor is empty
if not actor:
logging.verbose(f'Failed to fetch actor: {actor_id}')
logging.verbose(f'Failed to fetch actor: {data.actorid}')
raise HTTPUnauthorized('failed to fetch actor')
## reject if the actor isn't whitelisted while the whiltelist is enabled
elif config.whitelist_enabled and not config.is_whitelisted(actor_id):
logging.verbose(f'Rejected actor for not being in the whitelist: {actor_id}')
elif config.whitelist_enabled and not config.is_whitelisted(data.domain):
logging.verbose(f'Rejected actor for not being in the whitelist: {data.actorid}')
raise HTTPForbidden(body='access denied')
## reject if actor is banned
if app['config'].is_banned(actor_id):
logging.verbose(f'Ignored request from banned actor: {actor_id}')
if app['config'].is_banned(data.domain):
logging.verbose(f'Ignored request from banned actor: {data.actorid}')
raise HTTPForbidden(body='access denied')
## reject if software used by actor is banned
if len(config.blocked_software):
software = await misc.fetch_nodeinfo(actor_domain)
software = await misc.fetch_nodeinfo(data.domain)
if config.is_banned_software(software):
logging.verbose(f'Rejected actor for using specific software: {software}')
raise HTTPForbidden(body='access denied')
## reject if the signature is invalid
if not (await misc.validate_signature(actor_id, request)):
logging.verbose(f'signature validation failed for: {actor_id}')
if not (await misc.validate_signature(data.actorid, request)):
logging.verbose(f'signature validation failed for: {data.actorid}')
raise HTTPUnauthorized(body='signature check failed, signature did not match key')
## reject if activity type isn't 'Follow' and the actor isn't following
if data['type'] != 'Follow' and not database.get_inbox(actor_domain):
logging.verbose(f'Rejected actor for trying to post while not following: {actor_id}')
if data['type'] != 'Follow' and not database.get_inbox(data.domain):
logging.verbose(f'Rejected actor for trying to post while not following: {data.actorid}')
raise HTTPUnauthorized(body='access denied')
logging.debug(f">> payload {data}")
await run_processor(request, data, actor)
await run_processor(request, actor, data, software)
return Response(body=b'{}', content_type='application/activity+json')