epicyon/like.py

504 lines
18 KiB
Python

__filename__ = "like.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.5.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "ActivityPub"
import os
from pprint import pprint
from utils import has_object_string
from utils import has_object_string_object
from utils import has_object_string_type
from utils import remove_domain_port
from utils import has_object_dict
from utils import has_users_path
from utils import get_full_domain
from utils import remove_id_ending
from utils import url_permitted
from utils import get_nickname_from_actor
from utils import get_domain_from_actor
from utils import locate_post
from utils import undo_likes_collection_entry
from utils import has_group_type
from utils import local_actor_url
from utils import load_json
from utils import save_json
from utils import remove_post_from_cache
from utils import get_cached_post_filename
from utils import get_actor_from_post
from posts import send_signed_json
from session import post_json
from webfinger import webfinger_handle
from auth import create_basic_auth_header
from posts import get_person_box
def no_of_likes(post_json_object: {}) -> int:
"""Returns the number of likes on a given post
"""
obj = post_json_object
if has_object_dict(post_json_object):
obj = post_json_object['object']
if not obj.get('likes'):
return 0
if not isinstance(obj['likes'], dict):
return 0
if not obj['likes'].get('items'):
obj['likes']['items'] = []
obj['likes']['totalItems'] = 0
return len(obj['likes']['items'])
def liked_by_person(post_json_object: {}, nickname: str, domain: str) -> bool:
"""Returns True if the given post is liked by the given person
"""
if no_of_likes(post_json_object) == 0:
return False
actor_match = domain + '/users/' + nickname
obj = post_json_object
if has_object_dict(post_json_object):
obj = post_json_object['object']
for item in obj['likes']['items']:
if item['actor'].endswith(actor_match):
return True
return False
def _create_like(recent_posts_cache: {},
session, base_dir: str, federation_list: [],
nickname: str, domain: str, port: int,
cc_list: [], http_prefix: str,
object_url: str, actor_liked: str,
client_to_server: bool,
send_threads: [], post_log: [],
person_cache: {}, cached_webfingers: {},
debug: bool, project_version: str,
signing_priv_key_pem: str,
curr_domain: str,
onion_domain: str, i2p_domain: str,
sites_unavailable: [],
system_language: str) -> {}:
"""Creates a like
actor is the person doing the liking
'to' might be a specific person (actor) whose post was liked
object is typically the url of the message which was liked
"""
if not url_permitted(object_url, federation_list):
return None
full_domain = get_full_domain(domain, port)
new_like_json = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Like',
'actor': local_actor_url(http_prefix, nickname, full_domain),
'object': object_url
}
if cc_list:
if len(cc_list) > 0:
new_like_json['cc'] = cc_list
# Extract the domain and nickname from a statuses link
liked_post_nickname = None
liked_post_domain = None
liked_post_port = None
group_account = False
if actor_liked:
liked_post_nickname = get_nickname_from_actor(actor_liked)
liked_post_domain, liked_post_port = get_domain_from_actor(actor_liked)
group_account = has_group_type(base_dir, actor_liked, person_cache)
else:
if has_users_path(object_url):
liked_post_nickname = get_nickname_from_actor(object_url)
liked_post_domain, liked_post_port = \
get_domain_from_actor(object_url)
if liked_post_nickname and liked_post_domain:
if '/' + str(liked_post_nickname) + '/' in object_url:
actor_liked = \
object_url.split('/' +
liked_post_nickname + '/')[0] + \
'/' + liked_post_nickname
group_account = \
has_group_type(base_dir, actor_liked, person_cache)
if liked_post_nickname:
post_filename = locate_post(base_dir, nickname, domain, object_url)
if not post_filename:
print('DEBUG: like base_dir: ' + base_dir)
print('DEBUG: like nickname: ' + nickname)
print('DEBUG: like domain: ' + domain)
print('DEBUG: like object_url: ' + object_url)
return None
actor_url = get_actor_from_post(new_like_json)
update_likes_collection(recent_posts_cache,
base_dir, post_filename, object_url,
actor_url,
nickname, domain, debug, None)
extra_headers = {}
send_signed_json(new_like_json, session, base_dir,
nickname, domain, port,
liked_post_nickname, liked_post_domain,
liked_post_port,
http_prefix, client_to_server, federation_list,
send_threads, post_log, cached_webfingers,
person_cache,
debug, project_version, None, group_account,
signing_priv_key_pem, 7367374,
curr_domain, onion_domain, i2p_domain,
extra_headers, sites_unavailable,
system_language)
return new_like_json
def like_post(recent_posts_cache: {},
session, base_dir: str, federation_list: [],
nickname: str, domain: str, port: int, http_prefix: str,
like_nickname: str, like_domain: str, like_port: int,
cc_list: [],
like_status_number: int, client_to_server: bool,
send_threads: [], post_log: [],
person_cache: {}, cached_webfingers: {},
debug: bool, project_version: str,
signing_priv_key_pem: str,
curr_domain: str, onion_domain: str, i2p_domain: str,
sites_unavailable: [],
system_language: str) -> {}:
"""Likes a given status post. This is only used by unit tests
"""
like_domain = get_full_domain(like_domain, like_port)
actor_liked = local_actor_url(http_prefix, like_nickname, like_domain)
object_url = actor_liked + '/statuses/' + str(like_status_number)
return _create_like(recent_posts_cache,
session, base_dir, federation_list,
nickname, domain, port,
cc_list, http_prefix, object_url, actor_liked,
client_to_server,
send_threads, post_log, person_cache,
cached_webfingers,
debug, project_version, signing_priv_key_pem,
curr_domain, onion_domain, i2p_domain,
sites_unavailable, system_language)
def send_like_via_server(base_dir: str, session,
from_nickname: str, password: str,
from_domain: str, from_port: int,
http_prefix: str, like_url: str,
cached_webfingers: {}, person_cache: {},
debug: bool, project_version: str,
signing_priv_key_pem: str,
system_language: str) -> {}:
"""Creates a like via c2s
"""
if not session:
print('WARN: No session for send_like_via_server')
return 6
from_domain_full = get_full_domain(from_domain, from_port)
actor = local_actor_url(http_prefix, from_nickname, from_domain_full)
new_like_json = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Like',
'actor': actor,
'object': like_url
}
handle = http_prefix + '://' + from_domain_full + '/@' + from_nickname
# lookup the inbox for the To handle
wf_request = webfinger_handle(session, handle, http_prefix,
cached_webfingers,
from_domain, project_version, debug, False,
signing_priv_key_pem)
if not wf_request:
if debug:
print('DEBUG: like webfinger failed for ' + handle)
return 1
if not isinstance(wf_request, dict):
print('WARN: like webfinger for ' + handle +
' did not return a dict. ' + str(wf_request))
return 1
post_to_box = 'outbox'
# get the actor inbox for the To handle
origin_domain = from_domain
(inbox_url, _, _, from_person_id, _, _,
_, _) = get_person_box(signing_priv_key_pem,
origin_domain,
base_dir, session, wf_request,
person_cache,
project_version, http_prefix,
from_nickname, from_domain,
post_to_box, 72873,
system_language)
if not inbox_url:
if debug:
print('DEBUG: like no ' + post_to_box + ' was found for ' + handle)
return 3
if not from_person_id:
if debug:
print('DEBUG: like no actor was found for ' + handle)
return 4
auth_header = create_basic_auth_header(from_nickname, password)
headers = {
'host': from_domain,
'Content-type': 'application/json',
'Authorization': auth_header
}
post_result = post_json(http_prefix, from_domain_full,
session, new_like_json, [], inbox_url,
headers, 3, True)
if not post_result:
if debug:
print('WARN: POST like failed for c2s to ' + inbox_url)
return 5
if debug:
print('DEBUG: c2s POST like success')
return new_like_json
def send_undo_like_via_server(base_dir: str, session,
from_nickname: str, password: str,
from_domain: str, from_port: int,
http_prefix: str, like_url: str,
cached_webfingers: {}, person_cache: {},
debug: bool, project_version: str,
signing_priv_key_pem: str,
system_language: str) -> {}:
"""Undo a like via c2s
"""
if not session:
print('WARN: No session for send_undo_like_via_server')
return 6
from_domain_full = get_full_domain(from_domain, from_port)
actor = local_actor_url(http_prefix, from_nickname, from_domain_full)
new_undo_like_json = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Undo',
'actor': actor,
'object': {
'type': 'Like',
'actor': actor,
'object': like_url
}
}
handle = http_prefix + '://' + from_domain_full + '/@' + from_nickname
# lookup the inbox for the To handle
wf_request = webfinger_handle(session, handle, http_prefix,
cached_webfingers,
from_domain, project_version, debug, False,
signing_priv_key_pem)
if not wf_request:
if debug:
print('DEBUG: unlike webfinger failed for ' + handle)
return 1
if not isinstance(wf_request, dict):
if debug:
print('WARN: unlike webfinger for ' + handle +
' did not return a dict. ' + str(wf_request))
return 1
post_to_box = 'outbox'
# get the actor inbox for the To handle
origin_domain = from_domain
(inbox_url, _, _, from_person_id, _, _,
_, _) = get_person_box(signing_priv_key_pem,
origin_domain,
base_dir, session, wf_request,
person_cache, project_version,
http_prefix, from_nickname,
from_domain, post_to_box,
72625, system_language)
if not inbox_url:
if debug:
print('DEBUG: unlike no ' + post_to_box + ' was found for ' +
handle)
return 3
if not from_person_id:
if debug:
print('DEBUG: unlike no actor was found for ' + handle)
return 4
auth_header = create_basic_auth_header(from_nickname, password)
headers = {
'host': from_domain,
'Content-type': 'application/json',
'Authorization': auth_header
}
post_result = post_json(http_prefix, from_domain_full,
session, new_undo_like_json, [], inbox_url,
headers, 3, True)
if not post_result:
if debug:
print('WARN: POST unlike failed for c2s to ' + inbox_url)
return 5
if debug:
print('DEBUG: c2s POST unlike success')
return new_undo_like_json
def outbox_like(recent_posts_cache: {},
base_dir: str, nickname: str, domain: str,
message_json: {}, debug: bool) -> None:
""" When a like request is received by the outbox from c2s
"""
if not message_json.get('type'):
if debug:
print('DEBUG: like - no type')
return
if not message_json['type'] == 'Like':
if debug:
print('DEBUG: not a like')
return
if not has_object_string(message_json, debug):
return
if debug:
print('DEBUG: c2s like request arrived in outbox')
message_id = remove_id_ending(message_json['object'])
domain = remove_domain_port(domain)
post_filename = locate_post(base_dir, nickname, domain, message_id)
if not post_filename:
if debug:
print('DEBUG: c2s like post not found in inbox or outbox')
print(message_id)
return True
actor_url = get_actor_from_post(message_json)
update_likes_collection(recent_posts_cache,
base_dir, post_filename, message_id,
actor_url,
nickname, domain, debug, None)
if debug:
print('DEBUG: post liked via c2s - ' + post_filename)
def outbox_undo_like(recent_posts_cache: {},
base_dir: str, nickname: str, domain: str,
message_json: {}, debug: bool) -> None:
""" When an undo like request is received by the outbox from c2s
"""
if not message_json.get('type'):
return
if not message_json['type'] == 'Undo':
return
if not has_object_string_type(message_json, debug):
return
if not message_json['object']['type'] == 'Like':
if debug:
print('DEBUG: not a undo like')
return
if not has_object_string_object(message_json, debug):
return
if debug:
print('DEBUG: c2s undo like request arrived in outbox')
message_id = remove_id_ending(message_json['object']['object'])
domain = remove_domain_port(domain)
post_filename = locate_post(base_dir, nickname, domain, message_id)
if not post_filename:
if debug:
print('DEBUG: c2s undo like post not found in inbox or outbox')
print(message_id)
return True
actor_url = get_actor_from_post(message_json)
undo_likes_collection_entry(recent_posts_cache, base_dir, post_filename,
message_id, actor_url,
domain, debug, None)
if debug:
print('DEBUG: post undo liked via c2s - ' + post_filename)
def update_likes_collection(recent_posts_cache: {},
base_dir: str, post_filename: str,
object_url: str, actor: str,
nickname: str, domain: str, debug: bool,
post_json_object: {}) -> None:
"""Updates the likes collection within a post
"""
if not post_json_object:
post_json_object = load_json(post_filename)
if not post_json_object:
return
# remove any cached version of this post so that the
# like icon is changed
remove_post_from_cache(post_json_object, recent_posts_cache)
cached_post_filename = \
get_cached_post_filename(base_dir, nickname,
domain, post_json_object)
if cached_post_filename:
if os.path.isfile(cached_post_filename):
try:
os.remove(cached_post_filename)
except OSError:
print('EX: update_likes_collection unable to delete ' +
cached_post_filename)
obj = post_json_object
if has_object_dict(post_json_object):
obj = post_json_object['object']
if not object_url.endswith('/likes'):
object_url = object_url + '/likes'
if not obj.get('likes'):
if debug:
print('DEBUG: Adding initial like to ' + object_url)
likes_json = {
"@context": "https://www.w3.org/ns/activitystreams",
'id': object_url,
'type': 'Collection',
"totalItems": 1,
'items': [{
'type': 'Like',
'actor': actor
}]
}
obj['likes'] = likes_json
else:
if not obj['likes'].get('items'):
obj['likes']['items'] = []
for like_item in obj['likes']['items']:
if like_item.get('actor'):
if like_item['actor'] == actor:
# already liked
return
new_like = {
'type': 'Like',
'actor': actor
}
obj['likes']['items'].append(new_like)
it_len = len(obj['likes']['items'])
obj['likes']['totalItems'] = it_len
if debug:
print('DEBUG: saving post with likes added')
pprint(post_json_object)
save_json(post_json_object, post_filename)