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epicyon/utils.py

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__filename__ = "utils.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.3.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@libreserver.org"
__status__ = "Production"
__module_group__ = "Core"
import os
import re
import time
import shutil
import datetime
import json
import idna
import locale
from dateutil.tz import tz
from pprint import pprint
from cryptography.hazmat.backends import default_backend
from cryptography.hazmat.primitives import hashes
from followingCalendar import add_person_to_calendar
VALID_HASHTAG_CHARS = \
set('_0123456789' +
'abcdefghijklmnopqrstuvwxyz' +
'ABCDEFGHIJKLMNOPQRSTUVWXYZ' +
'¡¿ÄäÀàÁáÂâÃãÅåǍǎĄąĂăÆæĀā' +
'ÇçĆćĈĉČčĎđĐďðÈèÉéÊêËëĚěĘęĖėĒē' +
'ĜĝĢģĞğĤĥÌìÍíÎîÏïıĪīĮįĴĵĶķ' +
'ĹĺĻļŁłĽľĿŀÑñŃńŇňŅņÖöÒòÓóÔôÕõŐőØøŒœ' +
'ŔŕŘřẞߌśŜŝŞşŠšȘșŤťŢţÞþȚțÜüÙùÚúÛûŰűŨũŲųŮůŪū' +
'ŴŵÝýŸÿŶŷŹźŽžŻż')
# posts containing these strings will always get screened out,
# both incoming and outgoing.
# Could include dubious clacks or admin dogwhistles
INVALID_CHARACTERS = (
'卐', '卍', '࿕', '࿖', '࿗', '࿘', 'ϟϟ', '🏳️‍🌈🚫', '⚡⚡'
)
def local_actor_url(http_prefix: str, nickname: str, domain_full: str) -> str:
"""Returns the url for an actor on this instance
"""
return http_prefix + '://' + domain_full + '/users/' + nickname
def get_actor_languages_list(actor_json: {}) -> []:
"""Returns a list containing languages used by the given actor
"""
if not actor_json.get('attachment'):
return []
for property_value in actor_json['attachment']:
if not property_value.get('name'):
continue
if not property_value['name'].lower().startswith('languages'):
continue
if not property_value.get('type'):
continue
if not property_value.get('value'):
continue
if property_value['type'] != 'PropertyValue':
continue
if isinstance(property_value['value'], list):
lang_list = property_value['value']
lang_list.sort()
return lang_list
if isinstance(property_value['value'], str):
lang_str = property_value['value']
lang_list_temp = []
if ',' in lang_str:
lang_list_temp = lang_str.split(',')
elif ';' in lang_str:
lang_list_temp = lang_str.split(';')
elif '/' in lang_str:
lang_list_temp = lang_str.split('/')
elif '+' in lang_str:
lang_list_temp = lang_str.split('+')
elif ' ' in lang_str:
lang_list_temp = lang_str.split(' ')
else:
return [lang_str]
lang_list = []
for lang in lang_list_temp:
lang = lang.strip()
if lang not in lang_list:
lang_list.append(lang)
lang_list.sort()
return lang_list
return []
def get_content_from_post(post_json_object: {}, system_language: str,
languages_understood: [],
contentType: str = "content") -> str:
"""Returns the content from the post in the given language
including searching for a matching entry within contentMap
"""
this_post_json = post_json_object
if has_object_dict(post_json_object):
this_post_json = post_json_object['object']
if not this_post_json.get(contentType):
return ''
content = ''
mapDict = contentType + 'Map'
if this_post_json.get(mapDict):
if isinstance(this_post_json[mapDict], dict):
if this_post_json[mapDict].get(system_language):
sys_lang = this_post_json[mapDict][system_language]
if isinstance(sys_lang, str):
return this_post_json[mapDict][system_language]
else:
# is there a contentMap/summaryMap entry for one of
# the understood languages?
for lang in languages_understood:
if this_post_json[mapDict].get(lang):
return this_post_json[mapDict][lang]
else:
if isinstance(this_post_json[contentType], str):
content = this_post_json[contentType]
return content
def get_summary_from_post(post_json_object: {}, system_language: str,
languages_understood: []) -> str:
"""Returns the summary from the post in the given language
including searching for a matching entry within summaryMap
"""
return get_content_from_post(post_json_object, system_language,
languages_understood, "summary")
def get_base_content_from_post(post_json_object: {},
system_language: str) -> str:
"""Returns the content from the post in the given language
"""
this_post_json = post_json_object
if has_object_dict(post_json_object):
this_post_json = post_json_object['object']
if not this_post_json.get('content'):
return ''
return this_post_json['content']
def acct_dir(base_dir: str, nickname: str, domain: str) -> str:
return base_dir + '/accounts/' + nickname + '@' + domain
def is_featured_writer(base_dir: str, nickname: str, domain: str) -> bool:
"""Is the given account a featured writer, appearing in the features
timeline on news instances?
"""
features_blocked_filename = \
acct_dir(base_dir, nickname, domain) + '/.nofeatures'
return not os.path.isfile(features_blocked_filename)
def refresh_newswire(base_dir: str):
"""Causes the newswire to be updates after a change to user accounts
"""
refresh_newswire_filename = base_dir + '/accounts/.refresh_newswire'
if os.path.isfile(refresh_newswire_filename):
return
with open(refresh_newswire_filename, 'w+') as refresh_file:
refresh_file.write('\n')
def get_sha_256(msg: str):
"""Returns a SHA256 hash of the given string
"""
digest = hashes.Hash(hashes.SHA256(), backend=default_backend())
digest.update(msg)
return digest.finalize()
def get_sha_512(msg: str):
"""Returns a SHA512 hash of the given string
"""
digest = hashes.Hash(hashes.SHA512(), backend=default_backend())
digest.update(msg)
return digest.finalize()
def local_network_host(host: str) -> bool:
"""Returns true if the given host is on the local network
"""
if host.startswith('localhost') or \
host.startswith('192.') or \
host.startswith('127.') or \
host.startswith('10.'):
return True
return False
def decoded_host(host: str) -> str:
"""Convert hostname to internationalized domain
https://en.wikipedia.org/wiki/Internationalized_domain_name
"""
if ':' not in host:
# eg. mydomain:8000
if not local_network_host(host):
if not host.endswith('.onion'):
if not host.endswith('.i2p'):
return idna.decode(host)
return host
def get_locked_account(actor_json: {}) -> bool:
"""Returns whether the given account requires follower approval
"""
if not actor_json.get('manuallyApprovesFollowers'):
return False
if actor_json['manuallyApprovesFollowers'] is True:
return True
return False
def has_users_path(path_str: str) -> bool:
"""Whether there is a /users/ path (or equivalent) in the given string
"""
users_list = get_user_paths()
for users_str in users_list:
if users_str in path_str:
return True
if '://' in path_str:
domain = path_str.split('://')[1]
if '/' in domain:
domain = domain.split('/')[0]
if '://' + domain + '/' not in path_str:
return False
nickname = path_str.split('://' + domain + '/')[1]
if '/' in nickname or '.' in nickname:
return False
return True
return False
def valid_post_date(published: str, max_age_days: int, debug: bool) -> bool:
"""Returns true if the published date is recent and is not in the future
"""
baseline_time = datetime.datetime(1970, 1, 1)
days_diff = datetime.datetime.utcnow() - baseline_time
now_days_since_epoch = days_diff.days
try:
post_time_object = \
datetime.datetime.strptime(published, "%Y-%m-%dT%H:%M:%SZ")
except BaseException:
if debug:
print('EX: valid_post_date invalid published date ' +
str(published))
return False
days_diff = post_time_object - baseline_time
post_days_since_epoch = days_diff.days
if post_days_since_epoch > now_days_since_epoch:
if debug:
print("Inbox post has a published date in the future!")
return False
if now_days_since_epoch - post_days_since_epoch >= max_age_days:
if debug:
print("Inbox post is not recent enough")
return False
return True
def get_full_domain(domain: str, port: int) -> str:
"""Returns the full domain name, including port number
"""
if not port:
return domain
if ':' in domain:
return domain
if port in (80, 443):
return domain
return domain + ':' + str(port)
def is_dormant(base_dir: str, nickname: str, domain: str, actor: str,
dormant_months: int) -> bool:
"""Is the given followed actor dormant, from the standpoint
of the given account
"""
last_seen_filename = acct_dir(base_dir, nickname, domain) + \
'/lastseen/' + actor.replace('/', '#') + '.txt'
if not os.path.isfile(last_seen_filename):
return False
days_since_epoch_str = None
try:
with open(last_seen_filename, 'r') as last_seen_file:
days_since_epoch_str = last_seen_file.read()
except OSError:
print('EX: failed to read last seen ' + last_seen_filename)
return False
if days_since_epoch_str:
days_since_epoch = int(days_since_epoch_str)
curr_time = datetime.datetime.utcnow()
curr_days_since_epoch = \
(curr_time - datetime.datetime(1970, 1, 1)).days
time_diff_months = \
int((curr_days_since_epoch - days_since_epoch) / 30)
if time_diff_months >= dormant_months:
return True
return False
def is_editor(base_dir: str, nickname: str) -> bool:
"""Returns true if the given nickname is an editor
"""
editors_file = base_dir + '/accounts/editors.txt'
if not os.path.isfile(editors_file):
admin_name = get_config_param(base_dir, 'admin')
if admin_name:
if admin_name == nickname:
return True
return False
with open(editors_file, 'r') as editors:
lines = editors.readlines()
if len(lines) == 0:
admin_name = get_config_param(base_dir, 'admin')
if admin_name:
if admin_name == nickname:
return True
for editor in lines:
editor = editor.strip('\n').strip('\r')
if editor == nickname:
return True
return False
def is_artist(base_dir: str, nickname: str) -> bool:
"""Returns true if the given nickname is an artist
"""
artists_file = base_dir + '/accounts/artists.txt'
if not os.path.isfile(artists_file):
admin_name = get_config_param(base_dir, 'admin')
if admin_name:
if admin_name == nickname:
return True
return False
with open(artists_file, 'r') as artists:
lines = artists.readlines()
if len(lines) == 0:
admin_name = get_config_param(base_dir, 'admin')
if admin_name:
if admin_name == nickname:
return True
for artist in lines:
artist = artist.strip('\n').strip('\r')
if artist == nickname:
return True
return False
def get_video_extensions() -> []:
"""Returns a list of the possible video file extensions
"""
return ('mp4', 'webm', 'ogv')
def get_audio_extensions() -> []:
"""Returns a list of the possible audio file extensions
"""
return ('mp3', 'ogg', 'flac')
def get_image_extensions() -> []:
"""Returns a list of the possible image file extensions
"""
return ('png', 'jpg', 'jpeg', 'gif', 'webp', 'avif', 'svg', 'ico', 'jxl')
def get_image_mime_type(image_filename: str) -> str:
"""Returns the mime type for the given image
"""
extensions_to_mime = {
'png': 'png',
'jpg': 'jpeg',
'jxl': 'jxl',
'gif': 'gif',
'avif': 'avif',
'svg': 'svg+xml',
'webp': 'webp',
'ico': 'x-icon'
}
for ext, mime_ext in extensions_to_mime.items():
if image_filename.endswith('.' + ext):
return 'image/' + mime_ext
return 'image/png'
def get_image_extension_from_mime_type(content_type: str) -> str:
"""Returns the image extension from a mime type, such as image/jpeg
"""
image_media = {
'png': 'png',
'jpeg': 'jpg',
'jxl': 'jxl',
'gif': 'gif',
'svg+xml': 'svg',
'webp': 'webp',
'avif': 'avif',
'x-icon': 'ico'
}
for mime_ext, ext in image_media.items():
if content_type.endswith(mime_ext):
return ext
return 'png'
def get_media_extensions() -> []:
"""Returns a list of the possible media file extensions
"""
return get_image_extensions() + \
get_video_extensions() + get_audio_extensions()
def get_image_formats() -> str:
"""Returns a string of permissable image formats
used when selecting an image for a new post
"""
image_ext = get_image_extensions()
image_formats = ''
for ext in image_ext:
if image_formats:
image_formats += ', '
image_formats += '.' + ext
return image_formats
def is_image_file(filename: str) -> bool:
"""Is the given filename an image?
"""
for ext in get_image_extensions():
if filename.endswith('.' + ext):
return True
return False
def get_media_formats() -> str:
"""Returns a string of permissable media formats
used when selecting an attachment for a new post
"""
media_ext = get_media_extensions()
media_formats = ''
for ext in media_ext:
if media_formats:
media_formats += ', '
media_formats += '.' + ext
return media_formats
def remove_html(content: str) -> str:
"""Removes html links from the given content.
Used to ensure that profile descriptions don't contain dubious content
"""
if '<' not in content:
return content
removing = False
content = content.replace('<a href', ' <a href')
content = content.replace('<q>', '"').replace('</q>', '"')
content = content.replace('</p>', '\n\n').replace('<br>', '\n')
result = ''
for char in content:
if char == '<':
removing = True
elif char == '>':
removing = False
elif not removing:
result += char
plain_text = result.replace(' ', ' ')
# insert spaces after full stops
str_len = len(plain_text)
result = ''
for i in range(str_len):
result += plain_text[i]
if plain_text[i] == '.' and i < str_len - 1:
if plain_text[i + 1] >= 'A' and plain_text[i + 1] <= 'Z':
result += ' '
result = result.replace(' ', ' ').strip()
return result
def first_paragraph_from_string(content: str) -> str:
"""Get the first paragraph from a blog post
to be used as a summary in the newswire feed
"""
if '<p>' not in content or '</p>' not in content:
return remove_html(content)
paragraph = content.split('<p>')[1]
if '</p>' in paragraph:
paragraph = paragraph.split('</p>')[0]
return remove_html(paragraph)
def is_system_account(nickname: str) -> bool:
"""Returns true if the given nickname is a system account
"""
if nickname in ('news', 'inbox'):
return True
return False
def _create_config(base_dir: str) -> None:
"""Creates a configuration file
"""
config_filename = base_dir + '/config.json'
if os.path.isfile(config_filename):
return
config_json = {
}
save_json(config_json, config_filename)
def set_config_param(base_dir: str, variable_name: str,
variable_value) -> None:
"""Sets a configuration value
"""
_create_config(base_dir)
config_filename = base_dir + '/config.json'
config_json = {}
if os.path.isfile(config_filename):
config_json = load_json(config_filename)
variable_name = _convert_to_camel_case(variable_name)
config_json[variable_name] = variable_value
save_json(config_json, config_filename)
def get_config_param(base_dir: str, variable_name: str):
"""Gets a configuration value
"""
_create_config(base_dir)
config_filename = base_dir + '/config.json'
config_json = load_json(config_filename)
if config_json:
variable_name = _convert_to_camel_case(variable_name)
if variable_name in config_json:
return config_json[variable_name]
return None
def is_suspended(base_dir: str, nickname: str) -> bool:
"""Returns true if the given nickname is suspended
"""
admin_nickname = get_config_param(base_dir, 'admin')
if not admin_nickname:
return False
if nickname == admin_nickname:
return False
suspended_filename = base_dir + '/accounts/suspended.txt'
if os.path.isfile(suspended_filename):
with open(suspended_filename, 'r') as susp_file:
lines = susp_file.readlines()
for suspended in lines:
if suspended.strip('\n').strip('\r') == nickname:
return True
return False
def get_followers_list(base_dir: str,
nickname: str, domain: str,
follow_file='following.txt') -> []:
"""Returns a list of followers for the given account
"""
filename = acct_dir(base_dir, nickname, domain) + '/' + follow_file
if not os.path.isfile(filename):
return []
with open(filename, 'r') as foll_file:
lines = foll_file.readlines()
for i, _ in enumerate(lines):
lines[i] = lines[i].strip()
return lines
return []
def get_followers_of_person(base_dir: str,
nickname: str, domain: str,
follow_file='following.txt') -> []:
"""Returns a list containing the followers of the given person
Used by the shared inbox to know who to send incoming mail to
"""
followers = []
domain = remove_domain_port(domain)
handle = nickname + '@' + domain
if not os.path.isdir(base_dir + '/accounts/' + handle):
return followers
for subdir, dirs, _ in os.walk(base_dir + '/accounts'):
for account in dirs:
filename = os.path.join(subdir, account) + '/' + follow_file
if account == handle or \
account.startswith('inbox@') or \
account.startswith('Actor@') or \
account.startswith('news@'):
continue
if not os.path.isfile(filename):
continue
with open(filename, 'r') as followingfile:
for following_handle in followingfile:
following_handle2 = following_handle.replace('\n', '')
following_handle2 = following_handle2.replace('\r', '')
if following_handle2 == handle:
if account not in followers:
followers.append(account)
break
break
return followers
def remove_id_ending(id_str: str) -> str:
"""Removes endings such as /activity and /undo
"""
if id_str.endswith('/activity'):
id_str = id_str[:-len('/activity')]
elif id_str.endswith('/undo'):
id_str = id_str[:-len('/undo')]
elif id_str.endswith('/event'):
id_str = id_str[:-len('/event')]
elif id_str.endswith('/replies'):
id_str = id_str[:-len('/replies')]
if id_str.endswith('#Create'):
id_str = id_str.split('#Create')[0]
return id_str
def remove_hash_from_post_id(post_id: str) -> str:
"""Removes any has from a post id
"""
if '#' not in post_id:
return post_id
return post_id.split('#')[0]
def get_protocol_prefixes() -> []:
"""Returns a list of valid prefixes
"""
return ('https://', 'http://', 'ftp://',
'dat://', 'i2p://', 'gnunet://',
'hyper://', 'gemini://', 'gopher://')
def get_link_prefixes() -> []:
"""Returns a list of valid web link prefixes
"""
return ('https://', 'http://', 'ftp://',
'dat://', 'i2p://', 'gnunet://', 'payto://',
'hyper://', 'gemini://', 'gopher://', 'briar:')
def remove_avatar_from_cache(base_dir: str, actor_str: str) -> None:
"""Removes any existing avatar entries from the cache
This avoids duplicate entries with differing extensions
"""
avatar_filename_extensions = get_image_extensions()
for extension in avatar_filename_extensions:
avatar_filename = \
base_dir + '/cache/avatars/' + actor_str + '.' + extension
if os.path.isfile(avatar_filename):
try:
os.remove(avatar_filename)
except OSError:
print('EX: remove_avatar_from_cache ' +
'unable to delete cached avatar ' +
str(avatar_filename))
def save_json(json_object: {}, filename: str) -> bool:
"""Saves json to a file
"""
tries = 0
while tries < 5:
try:
with open(filename, 'w+') as json_file:
json_file.write(json.dumps(json_object))
return True
except OSError:
print('EX: save_json ' + str(tries))
time.sleep(1)
tries += 1
return False
def load_json(filename: str, delay_sec: int = 2, max_tries: int = 5) -> {}:
"""Makes a few attempts to load a json formatted file
"""
if '/Actor@' in filename:
filename = filename.replace('/Actor@', '/inbox@')
json_object = None
tries = 0
while tries < max_tries:
try:
with open(filename, 'r') as json_file:
data = json_file.read()
json_object = json.loads(data)
break
except BaseException:
print('EX: load_json exception ' + str(filename))
if delay_sec > 0:
time.sleep(delay_sec)
tries += 1
return json_object
def load_json_onionify(filename: str, domain: str, onion_domain: str,
delay_sec: int = 2) -> {}:
"""Makes a few attempts to load a json formatted file
This also converts the domain name to the onion domain
"""
if '/Actor@' in filename:
filename = filename.replace('/Actor@', '/inbox@')
json_object = None
tries = 0
while tries < 5:
try:
with open(filename, 'r') as json_file:
data = json_file.read()
if data:
data = data.replace(domain, onion_domain)
data = data.replace('https:', 'http:')
print('*****data: ' + data)
json_object = json.loads(data)
break
except BaseException:
print('EX: load_json_onionify exception ' + str(filename))
if delay_sec > 0:
time.sleep(delay_sec)
tries += 1
return json_object
def get_status_number(published_str: str = None) -> (str, str):
"""Returns the status number and published date
"""
if not published_str:
curr_time = datetime.datetime.utcnow()
else:
curr_time = \
datetime.datetime.strptime(published_str, '%Y-%m-%dT%H:%M:%SZ')
days_since_epoch = (curr_time - datetime.datetime(1970, 1, 1)).days
# status is the number of seconds since epoch
status_number = \
str(((days_since_epoch * 24 * 60 * 60) +
(curr_time.hour * 60 * 60) +
(curr_time.minute * 60) +
curr_time.second) * 1000 +
int(curr_time.microsecond / 1000))
# See https://github.com/tootsuite/mastodon/blob/
# 995f8b389a66ab76ec92d9a240de376f1fc13a38/lib/mastodon/snowflake.rb
# use the leftover microseconds as the sequence number
sequence_id = curr_time.microsecond % 1000
# shift by 16bits "sequence data"
status_number = str((int(status_number) << 16) + sequence_id)
published = curr_time.strftime("%Y-%m-%dT%H:%M:%SZ")
return status_number, published
def evil_incarnate() -> []:
"""Hardcoded blocked domains
"""
return ('fedilist.com', 'gab.com', 'gabfed.com', 'spinster.xyz',
'kiwifarms.cc', 'djitter.com')
def is_evil(domain: str) -> bool:
""" https://www.youtube.com/watch?v=5qw1hcevmdU
"""
if not isinstance(domain, str):
print('WARN: Malformed domain ' + str(domain))
return True
# if a domain contains any of these strings then it is
# declaring itself to be hostile
evil_emporium = (
'nazi', 'extremis', 'extreemis', 'gendercritic',
'kiwifarm', 'illegal', 'raplst', 'rapist',
'rapl.st', 'rapi.st', 'antivax', 'plandemic', 'terror'
)
for hostile_str in evil_emporium:
if hostile_str in domain:
return True
evil_domains = evil_incarnate()
for concentrated_evil in evil_domains:
if domain.endswith(concentrated_evil):
return True
return False
def contains_invalid_chars(json_str: str) -> bool:
"""Does the given json string contain invalid characters?
"""
for is_invalid in INVALID_CHARACTERS:
if is_invalid in json_str:
return True
return False
def remove_invalid_chars(text: str) -> str:
"""Removes any invalid characters from a string
"""
for is_invalid in INVALID_CHARACTERS:
if is_invalid not in text:
continue
text = text.replace(is_invalid, '')
return text
def create_person_dir(nickname: str, domain: str, base_dir: str,
dir_name: str) -> str:
"""Create a directory for a person
"""
handle = nickname + '@' + domain
if not os.path.isdir(base_dir + '/accounts/' + handle):
os.mkdir(base_dir + '/accounts/' + handle)
box_dir = base_dir + '/accounts/' + handle + '/' + dir_name
if not os.path.isdir(box_dir):
os.mkdir(box_dir)
return box_dir
def create_outbox_dir(nickname: str, domain: str, base_dir: str) -> str:
"""Create an outbox for a person
"""
return create_person_dir(nickname, domain, base_dir, 'outbox')
def create_inbox_queue_dir(nickname: str, domain: str, base_dir: str) -> str:
"""Create an inbox queue and returns the feed filename and directory
"""
return create_person_dir(nickname, domain, base_dir, 'queue')
def domain_permitted(domain: str, federation_list: []) -> bool:
"""Is the given domain permitted according to the federation list?
"""
if len(federation_list) == 0:
return True
domain = remove_domain_port(domain)
if domain in federation_list:
return True
return False
def url_permitted(url: str, federation_list: []):
if is_evil(url):
return False
if not federation_list:
return True
for domain in federation_list:
if domain in url:
return True
return False
def get_local_network_addresses() -> []:
"""Returns patterns for local network address detection
"""
return ('localhost', '127.0.', '192.168', '10.0.')
def is_local_network_address(ip_address: str) -> bool:
"""Is the given ip address local?
"""
local_ips = get_local_network_addresses()
for ip_addr in local_ips:
if ip_address.startswith(ip_addr):
return True
return False
def _is_dangerous_string(content: str, allow_local_network_access: bool,
separators: [], invalid_strings: []) -> bool:
"""Returns true if the given string is dangerous
"""
for separator_style in separators:
start_char = separator_style[0]
end_char = separator_style[1]
if start_char not in content:
continue
if end_char not in content:
continue
content_sections = content.split(start_char)
invalid_partials = ()
if not allow_local_network_access:
invalid_partials = get_local_network_addresses()
for markup in content_sections:
if end_char not in markup:
continue
markup = markup.split(end_char)[0].strip()
for partial_match in invalid_partials:
if partial_match in markup:
return True
if ' ' not in markup:
for bad_str in invalid_strings:
if bad_str in markup:
return True
else:
for bad_str in invalid_strings:
if bad_str + ' ' in markup:
return True
return False
def dangerous_markup(content: str, allow_local_network_access: bool) -> bool:
"""Returns true if the given content contains dangerous html markup
"""
separators = [['<', '>'], ['&lt;', '&gt;']]
invalid_strings = [
'script', 'noscript', 'code', 'pre',
'canvas', 'style', 'abbr',
'frame', 'iframe', 'html', 'body',
'hr', 'allow-popups', 'allow-scripts'
]
return _is_dangerous_string(content, allow_local_network_access,
separators, invalid_strings)
def dangerous_svg(content: str, allow_local_network_access: bool) -> bool:
"""Returns true if the given svg file content contains dangerous scripts
"""
separators = [['<', '>'], ['&lt;', '&gt;']]
invalid_strings = [
'script'
]
return _is_dangerous_string(content, allow_local_network_access,
separators, invalid_strings)
def get_display_name(base_dir: str, actor: str, person_cache: {}) -> str:
"""Returns the display name for the given actor
"""
if '/statuses/' in actor:
actor = actor.split('/statuses/')[0]
if not person_cache.get(actor):
return None
name_found = None
if person_cache[actor].get('actor'):
if person_cache[actor]['actor'].get('name'):
name_found = person_cache[actor]['actor']['name']
else:
# Try to obtain from the cached actors
cached_actor_filename = \
base_dir + '/cache/actors/' + (actor.replace('/', '#')) + '.json'
if os.path.isfile(cached_actor_filename):
actor_json = load_json(cached_actor_filename, 1)
if actor_json:
if actor_json.get('name'):
name_found = actor_json['name']
if name_found:
if dangerous_markup(name_found, False):
name_found = "*ADVERSARY*"
return name_found
def _gender_from_string(translate: {}, text: str) -> str:
"""Given some text, does it contain a gender description?
"""
gender = None
if not text:
return None
text_orig = text
text = text.lower()
if translate['He/Him'].lower() in text or \
translate['boy'].lower() in text:
gender = 'He/Him'
elif (translate['She/Her'].lower() in text or
translate['girl'].lower() in text):
gender = 'She/Her'
elif 'him' in text or 'male' in text:
gender = 'He/Him'
elif 'her' in text or 'she' in text or \
'fem' in text or 'woman' in text:
gender = 'She/Her'
elif 'man' in text or 'He' in text_orig:
gender = 'He/Him'
return gender
def get_gender_from_bio(base_dir: str, actor: str, person_cache: {},
translate: {}) -> str:
"""Tries to ascertain gender from bio description
This is for use by text-to-speech for pitch setting
"""
default_gender = 'They/Them'
if '/statuses/' in actor:
actor = actor.split('/statuses/')[0]
if not person_cache.get(actor):
return default_gender
bio_found = None
if translate:
pronoun_str = translate['pronoun'].lower()
else:
pronoun_str = 'pronoun'
actor_json = None
if person_cache[actor].get('actor'):
actor_json = person_cache[actor]['actor']
else:
# Try to obtain from the cached actors
cached_actor_filename = \
base_dir + '/cache/actors/' + (actor.replace('/', '#')) + '.json'
if os.path.isfile(cached_actor_filename):
actor_json = load_json(cached_actor_filename, 1)
if not actor_json:
return default_gender
# is gender defined as a profile tag?
if actor_json.get('attachment'):
tags_list = actor_json['attachment']
if isinstance(tags_list, list):
# look for a gender field name
for tag in tags_list:
if not isinstance(tag, dict):
continue
if not tag.get('name') or not tag.get('value'):
continue
if tag['name'].lower() == \
translate['gender'].lower():
bio_found = tag['value']
break
if tag['name'].lower().startswith(pronoun_str):
bio_found = tag['value']
break
# the field name could be anything,
# just look at the value
if not bio_found:
for tag in tags_list:
if not isinstance(tag, dict):
continue
if not tag.get('name') or not tag.get('value'):
continue
gender = _gender_from_string(translate, tag['value'])
if gender:
return gender
# if not then use the bio
if not bio_found and actor_json.get('summary'):
bio_found = actor_json['summary']
if not bio_found:
return default_gender
gender = _gender_from_string(translate, bio_found)
if not gender:
gender = default_gender
return gender
def get_nickname_from_actor(actor: str) -> str:
"""Returns the nickname from an actor url
"""
if actor.startswith('@'):
actor = actor[1:]
users_paths = get_user_paths()
for possible_path in users_paths:
if possible_path in actor:
nick_str = actor.split(possible_path)[1].replace('@', '')
if '/' not in nick_str:
return nick_str
return nick_str.split('/')[0]
if '/@' in actor:
# https://domain/@nick
nick_str = actor.split('/@')[1]
if '/' in nick_str:
nick_str = nick_str.split('/')[0]
return nick_str
if '@' in actor:
nick_str = actor.split('@')[0]
return nick_str
if '://' in actor:
domain = actor.split('://')[1]
if '/' in domain:
domain = domain.split('/')[0]
if '://' + domain + '/' not in actor:
return None
nick_str = actor.split('://' + domain + '/')[1]
if '/' in nick_str or '.' in nick_str:
return None
return nick_str
return None
def get_user_paths() -> []:
"""Returns possible user paths
e.g. /users/nickname, /channel/nickname
"""
return ('/users/', '/profile/', '/accounts/', '/channel/', '/u/',
'/c/', '/video-channels/')
def get_group_paths() -> []:
"""Returns possible group paths
e.g. https://lemmy/c/groupname
"""
return ['/c/', '/video-channels/']
def get_domain_from_actor(actor: str) -> (str, int):
"""Returns the domain name from an actor url
"""
if actor.startswith('@'):
actor = actor[1:]
port = None
prefixes = get_protocol_prefixes()
users_paths = get_user_paths()
for possible_path in users_paths:
if possible_path in actor:
domain = actor.split(possible_path)[0]
for prefix in prefixes:
domain = domain.replace(prefix, '')
break
if '/@' in actor:
domain = actor.split('/@')[0]
for prefix in prefixes:
domain = domain.replace(prefix, '')
elif '@' in actor:
domain = actor.split('@')[1].strip()
else:
domain = actor
for prefix in prefixes:
domain = domain.replace(prefix, '')
if '/' in actor:
domain = domain.split('/')[0]
if ':' in domain:
port = get_port_from_domain(domain)
domain = remove_domain_port(domain)
return domain, port
def _set_default_pet_name(base_dir: str, nickname: str, domain: str,
follow_nickname: str, follow_domain: str) -> None:
"""Sets a default petname
This helps especially when using onion or i2p address
"""
domain = remove_domain_port(domain)
user_path = acct_dir(base_dir, nickname, domain)
petnames_filename = user_path + '/petnames.txt'
petname_lookup_entry = follow_nickname + ' ' + \
follow_nickname + '@' + follow_domain + '\n'
if not os.path.isfile(petnames_filename):
# if there is no existing petnames lookup file
with open(petnames_filename, 'w+') as petnames_file:
petnames_file.write(petname_lookup_entry)
return
with open(petnames_filename, 'r') as petnames_file:
petnames_str = petnames_file.read()
if petnames_str:
petnames_list = petnames_str.split('\n')
for pet in petnames_list:
if pet.startswith(follow_nickname + ' '):
# petname already exists
return
# petname doesn't already exist
with open(petnames_filename, 'a+') as petnames_file:
petnames_file.write(petname_lookup_entry)
def follow_person(base_dir: str, nickname: str, domain: str,
follow_nickname: str, follow_domain: str,
federation_list: [], debug: bool,
group_account: bool,
follow_file: str = 'following.txt') -> bool:
"""Adds a person to the follow list
"""
follow_domain_str_lower = follow_domain.lower().replace('\n', '')
if not domain_permitted(follow_domain_str_lower,
federation_list):
if debug:
print('DEBUG: follow of domain ' +
follow_domain + ' not permitted')
return False
if debug:
print('DEBUG: follow of domain ' + follow_domain)
if ':' in domain:
domain_only = remove_domain_port(domain)
handle = nickname + '@' + domain_only
else:
handle = nickname + '@' + domain
if not os.path.isdir(base_dir + '/accounts/' + handle):
print('WARN: account for ' + handle + ' does not exist')
return False
if ':' in follow_domain:
follow_domain_only = remove_domain_port(follow_domain)
handle_to_follow = follow_nickname + '@' + follow_domain_only
else:
handle_to_follow = follow_nickname + '@' + follow_domain
if group_account:
handle_to_follow = '!' + handle_to_follow
# was this person previously unfollowed?
unfollowed_filename = base_dir + '/accounts/' + handle + '/unfollowed.txt'
if os.path.isfile(unfollowed_filename):
if handle_to_follow in open(unfollowed_filename).read():
# remove them from the unfollowed file
new_lines = ''
with open(unfollowed_filename, 'r') as unfoll_file:
lines = unfoll_file.readlines()
for line in lines:
if handle_to_follow not in line:
new_lines += line
with open(unfollowed_filename, 'w+') as unfoll_file:
unfoll_file.write(new_lines)
if not os.path.isdir(base_dir + '/accounts'):
os.mkdir(base_dir + '/accounts')
handle_to_follow = follow_nickname + '@' + follow_domain
if group_account:
handle_to_follow = '!' + handle_to_follow
filename = base_dir + '/accounts/' + handle + '/' + follow_file
if os.path.isfile(filename):
if handle_to_follow in open(filename).read():
if debug:
print('DEBUG: follow already exists')
return True
# prepend to follow file
try:
with open(filename, 'r+') as foll_file:
content = foll_file.read()
if handle_to_follow + '\n' not in content:
foll_file.seek(0, 0)
foll_file.write(handle_to_follow + '\n' + content)
print('DEBUG: follow added')
except OSError as ex:
print('WARN: Failed to write entry to follow file ' +
filename + ' ' + str(ex))
else:
# first follow
if debug:
print('DEBUG: ' + handle +
' creating new following file to follow ' +
handle_to_follow +
', filename is ' + filename)
with open(filename, 'w+') as foll_file:
foll_file.write(handle_to_follow + '\n')
if follow_file.endswith('following.txt'):
# Default to adding new follows to the calendar.
# Possibly this could be made optional
# if following a person add them to the list of
# calendar follows
print('DEBUG: adding ' +
follow_nickname + '@' + follow_domain + ' to calendar of ' +
nickname + '@' + domain)
add_person_to_calendar(base_dir, nickname, domain,
follow_nickname, follow_domain)
# add a default petname
_set_default_pet_name(base_dir, nickname, domain,
follow_nickname, follow_domain)
return True
def votes_on_newswire_item(status: []) -> int:
"""Returns the number of votes on a newswire item
"""
total_votes = 0
for line in status:
if 'vote:' in line:
total_votes += 1
return total_votes
def locate_news_votes(base_dir: str, domain: str,
post_url: str) -> str:
"""Returns the votes filename for a news post
within the news user account
"""
post_url = \
post_url.strip().replace('\n', '').replace('\r', '')
# if this post in the shared inbox?
post_url = remove_id_ending(post_url.strip()).replace('/', '#')
if post_url.endswith('.json'):
post_url = post_url + '.votes'
else:
post_url = post_url + '.json.votes'
account_dir = base_dir + '/accounts/news@' + domain + '/'
post_filename = account_dir + 'outbox/' + post_url
if os.path.isfile(post_filename):
return post_filename
return None
def locate_news_arrival(base_dir: str, domain: str,
post_url: str) -> str:
"""Returns the arrival time for a news post
within the news user account
"""
post_url = \
post_url.strip().replace('\n', '').replace('\r', '')
# if this post in the shared inbox?
post_url = remove_id_ending(post_url.strip()).replace('/', '#')
if post_url.endswith('.json'):
post_url = post_url + '.arrived'
else:
post_url = post_url + '.json.arrived'
account_dir = base_dir + '/accounts/news@' + domain + '/'
post_filename = account_dir + 'outbox/' + post_url
if os.path.isfile(post_filename):
with open(post_filename, 'r') as arrival_file:
arrival = arrival_file.read()
if arrival:
arrival_date = \
datetime.datetime.strptime(arrival,
"%Y-%m-%dT%H:%M:%SZ")
return arrival_date
return None
def clear_from_post_caches(base_dir: str, recent_posts_cache: {},
post_id: str) -> None:
"""Clears cached html for the given post, so that edits
to news will appear
"""
filename = '/postcache/' + post_id + '.html'
for subdir, dirs, files in os.walk(base_dir + '/accounts'):
for acct in dirs:
if '@' not in acct:
continue
if acct.startswith('inbox@') or acct.startswith('Actor@'):
continue
cache_dir = os.path.join(base_dir + '/accounts', acct)
post_filename = cache_dir + filename
if os.path.isfile(post_filename):
try:
os.remove(post_filename)
except OSError:
print('EX: clear_from_post_caches file not removed ' +
str(post_filename))
# if the post is in the recent posts cache then remove it
if recent_posts_cache.get('index'):
if post_id in recent_posts_cache['index']:
recent_posts_cache['index'].remove(post_id)
if recent_posts_cache.get('json'):
if recent_posts_cache['json'].get(post_id):
del recent_posts_cache['json'][post_id]
if recent_posts_cache.get('html'):
if recent_posts_cache['html'].get(post_id):
del recent_posts_cache['html'][post_id]
break
def locate_post(base_dir: str, nickname: str, domain: str,
post_url: str, replies: bool = False) -> str:
"""Returns the filename for the given status post url
"""
if not replies:
extension = 'json'
else:
extension = 'replies'
# if this post in the shared inbox?
post_url = remove_id_ending(post_url.strip()).replace('/', '#')
# add the extension
post_url = post_url + '.' + extension
# search boxes
boxes = ('inbox', 'outbox', 'tlblogs')
account_dir = acct_dir(base_dir, nickname, domain) + '/'
for box_name in boxes:
post_filename = account_dir + box_name + '/' + post_url
if os.path.isfile(post_filename):
return post_filename
# check news posts
account_dir = base_dir + '/accounts/news' + '@' + domain + '/'
post_filename = account_dir + 'outbox/' + post_url
if os.path.isfile(post_filename):
return post_filename
# is it in the announce cache?
post_filename = base_dir + '/cache/announce/' + nickname + '/' + post_url
if os.path.isfile(post_filename):
return post_filename
# print('WARN: unable to locate ' + nickname + ' ' + post_url)
return None
def _get_published_date(post_json_object: {}) -> str:
"""Returns the published date on the given post
"""
published = None
if post_json_object.get('published'):
published = post_json_object['published']
elif has_object_dict(post_json_object):
if post_json_object['object'].get('published'):
published = post_json_object['object']['published']
if not published:
return None
if not isinstance(published, str):
return None
return published
def get_reply_interval_hours(base_dir: str, nickname: str, domain: str,
default_reply_interval_hrs: int) -> int:
"""Returns the reply interval for the given account.
The reply interval is the number of hours after a post being made
during which replies are allowed
"""
reply_interval_filename = \
acct_dir(base_dir, nickname, domain) + '/.reply_interval_hours'
if os.path.isfile(reply_interval_filename):
with open(reply_interval_filename, 'r') as interval_file:
hours_str = interval_file.read()
if hours_str.isdigit():
return int(hours_str)
return default_reply_interval_hrs
def set_reply_interval_hours(base_dir: str, nickname: str, domain: str,
reply_interval_hours: int) -> bool:
"""Sets the reply interval for the given account.
The reply interval is the number of hours after a post being made
during which replies are allowed
"""
reply_interval_filename = \
acct_dir(base_dir, nickname, domain) + '/.reply_interval_hours'
try:
with open(reply_interval_filename, 'w+') as interval_file:
interval_file.write(str(reply_interval_hours))
return True
except OSError:
print('EX: set_reply_interval_hours unable to save reply interval ' +
str(reply_interval_filename) + ' ' +
str(reply_interval_hours))
return False
def can_reply_to(base_dir: str, nickname: str, domain: str,
post_url: str, reply_interval_hours: int,
curr_date_str: str = None,
post_json_object: {} = None) -> bool:
"""Is replying to the given post permitted?
This is a spam mitigation feature, so that spammers can't
add a lot of replies to old post which you don't notice.
"""
if '/statuses/' not in post_url:
return True
if not post_json_object:
post_filename = locate_post(base_dir, nickname, domain, post_url)
if not post_filename:
return False
post_json_object = load_json(post_filename)
if not post_json_object:
return False
published = _get_published_date(post_json_object)
if not published:
return False
try:
pub_date = datetime.datetime.strptime(published, '%Y-%m-%dT%H:%M:%SZ')
except BaseException:
print('EX: can_reply_to unrecognized published date ' + str(published))
return False
if not curr_date_str:
curr_date = datetime.datetime.utcnow()
else:
try:
curr_date = \
datetime.datetime.strptime(curr_date_str, '%Y-%m-%dT%H:%M:%SZ')
except BaseException:
print('EX: can_reply_to unrecognized current date ' +
str(curr_date_str))
return False
hours_since_publication = \
int((curr_date - pub_date).total_seconds() / 3600)
if hours_since_publication < 0 or \
hours_since_publication >= reply_interval_hours:
return False
return True
def _remove_attachment(base_dir: str, http_prefix: str, domain: str,
post_json: {}):
if not post_json.get('attachment'):
return
if not post_json['attachment'][0].get('url'):
return
attachment_url = post_json['attachment'][0]['url']
if not attachment_url:
return
media_filename = base_dir + '/' + \
attachment_url.replace(http_prefix + '://' + domain + '/', '')
if os.path.isfile(media_filename):
try:
os.remove(media_filename)
except OSError:
print('EX: _remove_attachment unable to delete media file ' +
str(media_filename))
etag_filename = media_filename + '.etag'
if os.path.isfile(etag_filename):
try:
os.remove(etag_filename)
except OSError:
print('EX: _remove_attachment unable to delete etag file ' +
str(etag_filename))
post_json['attachment'] = []
def remove_moderation_post_from_index(base_dir: str, post_url: str,
debug: bool) -> None:
"""Removes a url from the moderation index
"""
moderation_index_file = base_dir + '/accounts/moderation.txt'
if not os.path.isfile(moderation_index_file):
return
post_id = remove_id_ending(post_url)
if post_id in open(moderation_index_file).read():
with open(moderation_index_file, 'r') as file1:
lines = file1.readlines()
with open(moderation_index_file, 'w+') as file2:
for line in lines:
if line.strip("\n").strip("\r") != post_id:
file2.write(line)
continue
if debug:
print('DEBUG: removed ' + post_id +
' from moderation index')
def _is_reply_to_blog_post(base_dir: str, nickname: str, domain: str,
post_json_object: str):
"""Is the given post a reply to a blog post?
"""
if not has_object_dict(post_json_object):
return False
if not post_json_object['object'].get('inReplyTo'):
return False
if not isinstance(post_json_object['object']['inReplyTo'], str):
return False
blogs_index_filename = \
acct_dir(base_dir, nickname, domain) + '/tlblogs.index'
if not os.path.isfile(blogs_index_filename):
return False
post_id = remove_id_ending(post_json_object['object']['inReplyTo'])
post_id = post_id.replace('/', '#')
if post_id in open(blogs_index_filename).read():
return True
return False
def _delete_post_remove_replies(base_dir: str, nickname: str, domain: str,
http_prefix: str, post_filename: str,
recent_posts_cache: {}, debug: bool) -> None:
"""Removes replies when deleting a post
"""
replies_filename = post_filename.replace('.json', '.replies')
if not os.path.isfile(replies_filename):
return
if debug:
print('DEBUG: removing replies to ' + post_filename)
with open(replies_filename, 'r') as replies_file:
for reply_id in replies_file:
reply_file = locate_post(base_dir, nickname, domain, reply_id)
if not reply_file:
continue
if os.path.isfile(reply_file):
delete_post(base_dir, http_prefix,
nickname, domain, reply_file, debug,
recent_posts_cache)
# remove the replies file
try:
os.remove(replies_filename)
except OSError:
print('EX: _delete_post_remove_replies ' +
'unable to delete replies file ' + str(replies_filename))
def _is_bookmarked(base_dir: str, nickname: str, domain: str,
post_filename: str) -> bool:
"""Returns True if the given post is bookmarked
"""
bookmarks_index_filename = \
acct_dir(base_dir, nickname, domain) + '/bookmarks.index'
if os.path.isfile(bookmarks_index_filename):
bookmark_index = post_filename.split('/')[-1] + '\n'
if bookmark_index in open(bookmarks_index_filename).read():
return True
return False
def remove_post_from_cache(post_json_object: {},
recent_posts_cache: {}) -> None:
""" if the post exists in the recent posts cache then remove it
"""
if not recent_posts_cache:
return
if not post_json_object.get('id'):
return
if not recent_posts_cache.get('index'):
return
post_id = post_json_object['id']
if '#' in post_id:
post_id = post_id.split('#', 1)[0]
post_id = remove_id_ending(post_id).replace('/', '#')
if post_id not in recent_posts_cache['index']:
return
if recent_posts_cache.get('index'):
if post_id in recent_posts_cache['index']:
recent_posts_cache['index'].remove(post_id)
if recent_posts_cache.get('json'):
if recent_posts_cache['json'].get(post_id):
del recent_posts_cache['json'][post_id]
if recent_posts_cache.get('html'):
if recent_posts_cache['html'].get(post_id):
del recent_posts_cache['html'][post_id]
def _delete_cached_html(base_dir: str, nickname: str, domain: str,
post_json_object: {}):
"""Removes cached html file for the given post
"""
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: _delete_cached_html ' +
'unable to delete cached post file ' +
str(cached_post_filename))
def _delete_hashtags_on_post(base_dir: str, post_json_object: {}) -> None:
"""Removes hashtags when a post is deleted
"""
remove_hashtag_index = False
if has_object_dict(post_json_object):
if post_json_object['object'].get('content'):
if '#' in post_json_object['object']['content']:
remove_hashtag_index = True
if not remove_hashtag_index:
return
if not post_json_object['object'].get('id') or \
not post_json_object['object'].get('tag'):
return
# get the id of the post
post_id = remove_id_ending(post_json_object['object']['id'])
for tag in post_json_object['object']['tag']:
if not tag.get('type'):
continue
if tag['type'] != 'Hashtag':
continue
if not tag.get('name'):
continue
# find the index file for this tag
tag_index_filename = base_dir + '/tags/' + tag['name'][1:] + '.txt'
if not os.path.isfile(tag_index_filename):
continue
# remove post_id from the tag index file
lines = None
with open(tag_index_filename, 'r') as index_file:
lines = index_file.readlines()
if not lines:
continue
newlines = ''
for file_line in lines:
if post_id in file_line:
# skip over the deleted post
continue
newlines += file_line
if not newlines.strip():
# if there are no lines then remove the hashtag file
try:
os.remove(tag_index_filename)
except OSError:
print('EX: _delete_hashtags_on_post ' +
'unable to delete tag index ' + str(tag_index_filename))
else:
# write the new hashtag index without the given post in it
with open(tag_index_filename, 'w+') as index_file:
index_file.write(newlines)
def _delete_conversation_post(base_dir: str, nickname: str, domain: str,
post_json_object: {}) -> None:
"""Deletes a post from a conversation
"""
if not has_object_dict(post_json_object):
return False
if not post_json_object['object'].get('conversation'):
return False
if not post_json_object['object'].get('id'):
return False
conversation_dir = \
acct_dir(base_dir, nickname, domain) + '/conversation'
conversation_id = post_json_object['object']['conversation']
conversation_id = conversation_id.replace('/', '#')
post_id = post_json_object['object']['id']
conversation_filename = conversation_dir + '/' + conversation_id
if not os.path.isfile(conversation_filename):
return False
conversation_str = ''
with open(conversation_filename, 'r') as conv_file:
conversation_str = conv_file.read()
if post_id + '\n' not in conversation_str:
return False
conversation_str = conversation_str.replace(post_id + '\n', '')
if conversation_str:
with open(conversation_filename, 'w+') as conv_file:
conv_file.write(conversation_str)
else:
if os.path.isfile(conversation_filename + '.muted'):
try:
os.remove(conversation_filename + '.muted')
except OSError:
print('EX: _delete_conversation_post ' +
'unable to remove conversation ' +
str(conversation_filename) + '.muted')
try:
os.remove(conversation_filename)
except OSError:
print('EX: _delete_conversation_post ' +
'unable to remove conversation ' +
str(conversation_filename))
def delete_post(base_dir: str, http_prefix: str,
nickname: str, domain: str, post_filename: str,
debug: bool, recent_posts_cache: {}) -> None:
"""Recursively deletes a post and its replies and attachments
"""
post_json_object = load_json(post_filename, 1)
if not post_json_object:
# remove any replies
_delete_post_remove_replies(base_dir, nickname, domain,
http_prefix, post_filename,
recent_posts_cache, debug)
# finally, remove the post itself
try:
os.remove(post_filename)
except OSError:
if debug:
print('EX: delete_post unable to delete post ' +
str(post_filename))
return
# don't allow deletion of bookmarked posts
if _is_bookmarked(base_dir, nickname, domain, post_filename):
return
# don't remove replies to blog posts
if _is_reply_to_blog_post(base_dir, nickname, domain,
post_json_object):
return
# remove from recent posts cache in memory
remove_post_from_cache(post_json_object, recent_posts_cache)
# remove from conversation index
_delete_conversation_post(base_dir, nickname, domain, post_json_object)
# remove any attachment
_remove_attachment(base_dir, http_prefix, domain, post_json_object)
extensions = ('votes', 'arrived', 'muted', 'tts', 'reject', 'mitm')
for ext in extensions:
ext_filename = post_filename + '.' + ext
if os.path.isfile(ext_filename):
try:
os.remove(ext_filename)
except OSError:
print('EX: delete_post unable to remove ext ' +
str(ext_filename))
# remove cached html version of the post
_delete_cached_html(base_dir, nickname, domain, post_json_object)
has_object = False
if post_json_object.get('object'):
has_object = True
# remove from moderation index file
if has_object:
if has_object_dict(post_json_object):
if post_json_object['object'].get('moderationStatus'):
if post_json_object.get('id'):
post_id = remove_id_ending(post_json_object['id'])
remove_moderation_post_from_index(base_dir, post_id, debug)
# remove any hashtags index entries
if has_object:
_delete_hashtags_on_post(base_dir, post_json_object)
# remove any replies
_delete_post_remove_replies(base_dir, nickname, domain,
http_prefix, post_filename,
recent_posts_cache, debug)
# finally, remove the post itself
try:
os.remove(post_filename)
except OSError:
if debug:
print('EX: delete_post unable to delete post ' +
str(post_filename))
def _is_valid_language(text: str) -> bool:
"""Returns true if the given text contains a valid
natural language string
"""
natural_languages = {
"Latin": [65, 866],
"Greek": [880, 1280],
"isArmenian": [1328, 1424],
"isHebrew": [1424, 1536],
"Arabic": [1536, 1792],
"Syriac": [1792, 1872],
"Thaan": [1920, 1984],
"Devanagari": [2304, 2432],
"Bengali": [2432, 2560],
"Gurmukhi": [2560, 2688],
"Gujarati": [2688, 2816],
"Oriya": [2816, 2944],
"Tamil": [2944, 3072],
"Telugu": [3072, 3200],
"Kannada": [3200, 3328],
"Malayalam": [3328, 3456],
"Sinhala": [3456, 3584],
"Thai": [3584, 3712],
"Lao": [3712, 3840],
"Tibetan": [3840, 4096],
"Myanmar": [4096, 4256],
"Georgian": [4256, 4352],
"HangulJamo": [4352, 4608],
"Cherokee": [5024, 5120],
"UCAS": [5120, 5760],
"Ogham": [5760, 5792],
"Runic": [5792, 5888],
"Khmer": [6016, 6144],
"Hangul Syllables": [44032, 55203],
"Hangul Jamo": [4352, 4607],
"Hangul Compatibility Jamo": [12592, 12687],
"Hangul Jamo Extended-A": [43360, 43391],
"Hangul Jamo Extended-B": [55216, 55295],
"Mongolian": [6144, 6320],
"Cyrillic": [1024, 1279],
"Cyrillic Supplement": [1280, 1327],
"Cyrillic Extended A": [11744, 11775],
"Cyrillic Extended B": [42560, 42655],
"Cyrillic Extended C": [7296, 7311],
"Phonetic Extensions": [7467, 7544],
"Combining Half Marks": [65070, 65071]
}
for lang_name, lang_range in natural_languages.items():
ok_lang = True
for char in text:
if char.isdigit() or char == '_':
continue
if ord(char) not in range(lang_range[0], lang_range[1]):
ok_lang = False
break
if ok_lang:
return True
return False
def _get_reserved_words() -> str:
return ('inbox', 'dm', 'outbox', 'following',
'public', 'followers', 'category',
'channel', 'calendar', 'video-channels',
'tlreplies', 'tlmedia', 'tlblogs',
'tlblogs', 'tlfeatures',
'moderation', 'moderationaction',
'activity', 'undo', 'pinned',
'actor', 'Actor', 'instance.actor',
'reply', 'replies', 'question', 'like',
'likes', 'users', 'statuses', 'tags',
'accounts', 'headers',
'channels', 'profile', 'u', 'c',
'updates', 'repeat', 'announce',
'shares', 'fonts', 'icons', 'avatars',
'welcome', 'helpimages',
'bookmark', 'bookmarks', 'tlbookmarks',
'ignores', 'linksmobile', 'newswiremobile',
'minimal', 'search', 'eventdelete',
'searchemoji', 'catalog', 'conversationId',
'mention', 'http', 'https',
'ontologies', 'data')
def get_nickname_validation_pattern() -> str:
"""Returns a html text input validation pattern for nickname
"""
reserved_names = _get_reserved_words()
pattern = ''
for word in reserved_names:
if pattern:
pattern += '(?!.*\\b' + word + '\\b)'
else:
pattern = '^(?!.*\\b' + word + '\\b)'
return pattern + '.*${1,30}'
def _is_reserved_name(nickname: str) -> bool:
"""Is the given nickname reserved for some special function?
"""
reserved_names = _get_reserved_words()
if nickname in reserved_names:
return True
return False
def valid_nickname(domain: str, nickname: str) -> bool:
"""Is the given nickname valid?
"""
if len(nickname) == 0:
return False
if len(nickname) > 30:
return False
if not _is_valid_language(nickname):
return False
forbidden_chars = ('.', ' ', '/', '?', ':', ';', '@', '#', '!')
for char in forbidden_chars:
if char in nickname:
return False
# this should only apply for the shared inbox
if nickname == domain:
return False
if _is_reserved_name(nickname):
return False
return True
def no_of_accounts(base_dir: str) -> bool:
"""Returns the number of accounts on the system
"""
account_ctr = 0
for subdir, dirs, files in os.walk(base_dir + '/accounts'):
for account in dirs:
if is_account_dir(account):
account_ctr += 1
break
return account_ctr
def no_of_active_accounts_monthly(base_dir: str, months: int) -> bool:
"""Returns the number of accounts on the system this month
"""
account_ctr = 0
curr_time = int(time.time())
month_seconds = int(60*60*24*30*months)
for subdir, dirs, files in os.walk(base_dir + '/accounts'):
for account in dirs:
if not is_account_dir(account):
continue
last_used_filename = \
base_dir + '/accounts/' + account + '/.lastUsed'
if not os.path.isfile(last_used_filename):
continue
with open(last_used_filename, 'r') as last_used_file:
last_used = last_used_file.read()
if last_used.isdigit():
time_diff = (curr_time - int(last_used))
if time_diff < month_seconds:
account_ctr += 1
break
return account_ctr
def is_public_post_from_url(base_dir: str, nickname: str, domain: str,
post_url: str) -> bool:
"""Returns whether the given url is a public post
"""
post_filename = locate_post(base_dir, nickname, domain, post_url)
if not post_filename:
return False
post_json_object = load_json(post_filename, 1)
if not post_json_object:
return False
return is_public_post(post_json_object)
def is_public_post(post_json_object: {}) -> bool:
"""Returns true if the given post is public
"""
if not post_json_object.get('type'):
return False
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if not post_json_object['object'].get('to'):
return False
for recipient in post_json_object['object']['to']:
if recipient.endswith('#Public'):
return True
return False
def is_unlisted_post(post_json_object: {}) -> bool:
"""Returns true if the given post is unlisted
"""
if not post_json_object.get('type'):
return False
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if not post_json_object['object'].get('to'):
return False
if not post_json_object['object'].get('cc'):
return False
has_followers = False
for recipient in post_json_object['object']['to']:
if recipient.endswith('/followers'):
has_followers = True
break
if not has_followers:
return False
for recipient in post_json_object['object']['cc']:
if recipient.endswith('#Public'):
return True
return False
def copytree(src: str, dst: str, symlinks: str = False, ignore: bool = None):
"""Copy a directory
"""
for item in os.listdir(src):
s_dir = os.path.join(src, item)
d_dir = os.path.join(dst, item)
if os.path.isdir(s_dir):
shutil.copytree(s_dir, d_dir, symlinks, ignore)
else:
shutil.copy2(s_dir, d_dir)
def get_cached_post_directory(base_dir: str,
nickname: str, domain: str) -> str:
"""Returns the directory where the html post cache exists
"""
html_post_cache_dir = acct_dir(base_dir, nickname, domain) + '/postcache'
return html_post_cache_dir
def get_cached_post_filename(base_dir: str, nickname: str, domain: str,
post_json_object: {}) -> str:
"""Returns the html cache filename for the given post
"""
cached_post_dir = get_cached_post_directory(base_dir, nickname, domain)
if not os.path.isdir(cached_post_dir):
# print('ERROR: invalid html cache directory ' + cached_post_dir)
return None
if '@' not in cached_post_dir:
# print('ERROR: invalid html cache directory ' + cached_post_dir)
return None
cached_post_id = remove_id_ending(post_json_object['id'])
cached_post_filename = \
cached_post_dir + '/' + cached_post_id.replace('/', '#')
return cached_post_filename + '.html'
def update_recent_posts_cache(recent_posts_cache: {}, max_recent_posts: int,
post_json_object: {}, html_str: str) -> None:
"""Store recent posts in memory so that they can be quickly recalled
"""
if not post_json_object.get('id'):
return
post_id = post_json_object['id']
if '#' in post_id:
post_id = post_id.split('#', 1)[0]
post_id = remove_id_ending(post_id).replace('/', '#')
if recent_posts_cache.get('index'):
if post_id in recent_posts_cache['index']:
return
recent_posts_cache['index'].append(post_id)
post_json_object['muted'] = False
recent_posts_cache['json'][post_id] = json.dumps(post_json_object)
recent_posts_cache['html'][post_id] = html_str
while len(recent_posts_cache['html'].items()) > max_recent_posts:
post_id = recent_posts_cache['index'][0]
recent_posts_cache['index'].pop(0)
if recent_posts_cache['json'].get(post_id):
del recent_posts_cache['json'][post_id]
if recent_posts_cache['html'].get(post_id):
del recent_posts_cache['html'][post_id]
else:
recent_posts_cache['index'] = [post_id]
recent_posts_cache['json'] = {}
recent_posts_cache['html'] = {}
recent_posts_cache['json'][post_id] = json.dumps(post_json_object)
recent_posts_cache['html'][post_id] = html_str
def file_last_modified(filename: str) -> str:
"""Returns the date when a file was last modified
"""
time_val = os.path.getmtime(filename)
modified_time = datetime.datetime.fromtimestamp(time_val)
return modified_time.strftime("%Y-%m-%dT%H:%M:%SZ")
def get_css(base_dir: str, css_filename: str, css_cache: {}) -> str:
"""Retrieves the css for a given file, or from a cache
"""
# does the css file exist?
if not os.path.isfile(css_filename):
return None
last_modified = file_last_modified(css_filename)
# has this already been loaded into the cache?
if css_cache.get(css_filename):
if css_cache[css_filename][0] == last_modified:
# file hasn't changed, so return the version in the cache
return css_cache[css_filename][1]
with open(css_filename, 'r') as fp_css:
css = fp_css.read()
if css_cache.get(css_filename):
# alter the cache contents
css_cache[css_filename][0] = last_modified
css_cache[css_filename][1] = css
else:
# add entry to the cache
css_cache[css_filename] = [last_modified, css]
return css
return None
def is_blog_post(post_json_object: {}) -> bool:
"""Is the given post a blog post?
"""
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if not has_object_stringType(post_json_object, False):
return False
if not post_json_object['object'].get('content'):
return False
if post_json_object['object']['type'] != 'Article':
return False
return True
def is_news_post(post_json_object: {}) -> bool:
"""Is the given post a blog post?
"""
return post_json_object.get('news')
def _search_virtual_box_posts(base_dir: str, nickname: str, domain: str,
search_str: str, max_results: int,
box_name: str) -> []:
"""Searches through a virtual box, which is typically an index on the inbox
"""
index_filename = \
acct_dir(base_dir, nickname, domain) + '/' + box_name + '.index'
if box_name == 'bookmarks':
box_name = 'inbox'
path = acct_dir(base_dir, nickname, domain) + '/' + box_name
if not os.path.isdir(path):
return []
search_str = search_str.lower().strip()
if '+' in search_str:
search_words = search_str.split('+')
for index, _ in enumerate(search_words):
search_words[index] = search_words[index].strip()
print('SEARCH: ' + str(search_words))
else:
search_words = [search_str]
res = []
with open(index_filename, 'r') as index_file:
post_filename = 'start'
while post_filename:
post_filename = index_file.readline()
if not post_filename:
break
if '.json' not in post_filename:
break
post_filename = path + '/' + post_filename.strip()
if not os.path.isfile(post_filename):
continue
with open(post_filename, 'r') as post_file:
data = post_file.read().lower()
not_found = False
for keyword in search_words:
if keyword not in data:
not_found = True
break
if not_found:
continue
res.append(post_filename)
if len(res) >= max_results:
return res
return res
def search_box_posts(base_dir: str, nickname: str, domain: str,
search_str: str, max_results: int,
box_name='outbox') -> []:
"""Search your posts and return a list of the filenames
containing matching strings
"""
path = acct_dir(base_dir, nickname, domain) + '/' + box_name
# is this a virtual box, such as direct messages?
if not os.path.isdir(path):
if os.path.isfile(path + '.index'):
return _search_virtual_box_posts(base_dir, nickname, domain,
search_str, max_results, box_name)
return []
search_str = search_str.lower().strip()
if '+' in search_str:
search_words = search_str.split('+')
for index, _ in enumerate(search_words):
search_words[index] = search_words[index].strip()
print('SEARCH: ' + str(search_words))
else:
search_words = [search_str]
res = []
for root, dirs, fnames in os.walk(path):
for fname in fnames:
file_path = os.path.join(root, fname)
with open(file_path, 'r') as post_file:
data = post_file.read().lower()
not_found = False
for keyword in search_words:
if keyword not in data:
not_found = True
break
if not_found:
continue
res.append(file_path)
if len(res) >= max_results:
return res
break
return res
def get_file_case_insensitive(path: str) -> str:
"""Returns a case specific filename given a case insensitive version of it
"""
if os.path.isfile(path):
return path
if path != path.lower():
if os.path.isfile(path.lower()):
return path.lower()
return None
def undo_likes_collection_entry(recent_posts_cache: {},
base_dir: str, post_filename: str,
object_url: str,
actor: str, domain: str, debug: bool,
post_json_object: {}) -> None:
"""Undoes a like for a particular actor
"""
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
nickname = get_nickname_from_actor(actor)
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: undo_likes_collection_entry ' +
'unable to delete cached post ' +
str(cached_post_filename))
remove_post_from_cache(post_json_object, recent_posts_cache)
if not post_json_object.get('type'):
return
if post_json_object['type'] != 'Create':
return
obj = post_json_object
if has_object_dict(post_json_object):
obj = post_json_object['object']
if not obj.get('likes'):
return
if not isinstance(obj['likes'], dict):
return
if not obj['likes'].get('items'):
return
total_items = 0
if obj['likes'].get('totalItems'):
total_items = obj['likes']['totalItems']
item_found = False
for like_item in obj['likes']['items']:
if like_item.get('actor'):
if like_item['actor'] == actor:
if debug:
print('DEBUG: like was removed for ' + actor)
obj['likes']['items'].remove(like_item)
item_found = True
break
if not item_found:
return
if total_items == 1:
if debug:
print('DEBUG: likes was removed from post')
del obj['likes']
else:
itlen = len(obj['likes']['items'])
obj['likes']['totalItems'] = itlen
save_json(post_json_object, post_filename)
def undo_reaction_collection_entry(recent_posts_cache: {},
base_dir: str, post_filename: str,
object_url: str,
actor: str, domain: str, debug: bool,
post_json_object: {},
emoji_content: str) -> None:
"""Undoes an emoji reaction for a particular actor
"""
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
nickname = get_nickname_from_actor(actor)
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: undo_reaction_collection_entry ' +
'unable to delete cached post ' +
str(cached_post_filename))
remove_post_from_cache(post_json_object, recent_posts_cache)
if not post_json_object.get('type'):
return
if post_json_object['type'] != 'Create':
return
obj = post_json_object
if has_object_dict(post_json_object):
obj = post_json_object['object']
if not obj.get('reactions'):
return
if not isinstance(obj['reactions'], dict):
return
if not obj['reactions'].get('items'):
return
total_items = 0
if obj['reactions'].get('totalItems'):
total_items = obj['reactions']['totalItems']
item_found = False
for like_item in obj['reactions']['items']:
if like_item.get('actor'):
if like_item['actor'] == actor and \
like_item['content'] == emoji_content:
if debug:
print('DEBUG: emoji reaction was removed for ' + actor)
obj['reactions']['items'].remove(like_item)
item_found = True
break
if not item_found:
return
if total_items == 1:
if debug:
print('DEBUG: emoji reaction was removed from post')
del obj['reactions']
else:
itlen = len(obj['reactions']['items'])
obj['reactions']['totalItems'] = itlen
save_json(post_json_object, post_filename)
def undo_announce_collection_entry(recent_posts_cache: {},
base_dir: str, post_filename: str,
actor: str, domain: str,
debug: bool) -> None:
"""Undoes an announce for a particular actor by removing it from
the "shares" collection within a post. Note that the "shares"
collection has no relation to shared items in shares.py. It's
shares of posts, not shares of physical objects.
"""
post_json_object = load_json(post_filename)
if not post_json_object:
return
# remove any cached version of this announce so that the announce
# icon is changed
nickname = get_nickname_from_actor(actor)
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:
if debug:
print('EX: undo_announce_collection_entry ' +
'unable to delete cached post ' +
str(cached_post_filename))
remove_post_from_cache(post_json_object, recent_posts_cache)
if not post_json_object.get('type'):
return
if post_json_object['type'] != 'Create':
return
if not has_object_dict(post_json_object):
if debug:
pprint(post_json_object)
print('DEBUG: post has no object')
return
if not post_json_object['object'].get('shares'):
return
if not post_json_object['object']['shares'].get('items'):
return
total_items = 0
if post_json_object['object']['shares'].get('totalItems'):
total_items = post_json_object['object']['shares']['totalItems']
item_found = False
for announce_item in post_json_object['object']['shares']['items']:
if announce_item.get('actor'):
if announce_item['actor'] == actor:
if debug:
print('DEBUG: Announce was removed for ' + actor)
an_it = announce_item
post_json_object['object']['shares']['items'].remove(an_it)
item_found = True
break
if not item_found:
return
if total_items == 1:
if debug:
print('DEBUG: shares (announcements) ' +
'was removed from post')
del post_json_object['object']['shares']
else:
itlen = len(post_json_object['object']['shares']['items'])
post_json_object['object']['shares']['totalItems'] = itlen
save_json(post_json_object, post_filename)
def update_announce_collection(recent_posts_cache: {},
base_dir: str, post_filename: str,
actor: str, nickname: str, domain: str,
debug: bool) -> None:
"""Updates the announcements collection within a post
Confusingly this is known as "shares", but isn't the
same as shared items within shares.py
It's shares of posts, not shares of physical objects.
"""
post_json_object = load_json(post_filename)
if not post_json_object:
return
# remove any cached version of this announce so that the announce
# icon is changed
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:
if debug:
print('EX: update_announce_collection ' +
'unable to delete cached post ' +
str(cached_post_filename))
remove_post_from_cache(post_json_object, recent_posts_cache)
if not has_object_dict(post_json_object):
if debug:
pprint(post_json_object)
print('DEBUG: post ' + post_filename + ' has no object')
return
post_url = remove_id_ending(post_json_object['id']) + '/shares'
if not post_json_object['object'].get('shares'):
if debug:
print('DEBUG: Adding initial shares (announcements) to ' +
post_url)
announcements_json = {
"@context": "https://www.w3.org/ns/activitystreams",
'id': post_url,
'type': 'Collection',
"totalItems": 1,
'items': [{
'type': 'Announce',
'actor': actor
}]
}
post_json_object['object']['shares'] = announcements_json
else:
if post_json_object['object']['shares'].get('items'):
shares_items = post_json_object['object']['shares']['items']
for announce_item in shares_items:
if announce_item.get('actor'):
if announce_item['actor'] == actor:
return
new_announce = {
'type': 'Announce',
'actor': actor
}
post_json_object['object']['shares']['items'].append(new_announce)
itlen = len(post_json_object['object']['shares']['items'])
post_json_object['object']['shares']['totalItems'] = itlen
else:
if debug:
print('DEBUG: shares (announcements) section of post ' +
'has no items list')
if debug:
print('DEBUG: saving post with shares (announcements) added')
pprint(post_json_object)
save_json(post_json_object, post_filename)
def week_day_of_month_start(month_number: int, year: int) -> int:
"""Gets the day number of the first day of the month
1=sun, 7=sat
"""
first_day_of_month = datetime.datetime(year, month_number, 1, 0, 0)
return int(first_day_of_month.strftime("%w")) + 1
def media_file_mime_type(filename: str) -> str:
"""Given a media filename return its mime type
"""
if '.' not in filename:
return 'image/png'
extensions = {
'json': 'application/json',
'png': 'image/png',
'jpg': 'image/jpeg',
'jxl': 'image/jxl',
'jpeg': 'image/jpeg',
'gif': 'image/gif',
'svg': 'image/svg+xml',
'webp': 'image/webp',
'avif': 'image/avif',
'ico': 'image/x-icon',
'mp3': 'audio/mpeg',
'ogg': 'audio/ogg',
'flac': 'audio/flac',
'mp4': 'video/mp4',
'ogv': 'video/ogv'
}
file_ext = filename.split('.')[-1]
if not extensions.get(file_ext):
return 'image/png'
return extensions[file_ext]
def is_recent_post(post_json_object: {}, max_days: int) -> bool:
""" Is the given post recent?
"""
if not has_object_dict(post_json_object):
return False
if not post_json_object['object'].get('published'):
return False
if not isinstance(post_json_object['object']['published'], str):
return False
curr_time = datetime.datetime.utcnow()
days_since_epoch = (curr_time - datetime.datetime(1970, 1, 1)).days
recently = days_since_epoch - max_days
published_date_str = post_json_object['object']['published']
try:
published_date = \
datetime.datetime.strptime(published_date_str,
"%Y-%m-%dT%H:%M:%SZ")
except BaseException:
print('EX: is_recent_post unrecognized published date ' +
str(published_date_str))
return False
published_days_since_epoch = \
(published_date - datetime.datetime(1970, 1, 1)).days
if published_days_since_epoch < recently:
return False
return True
def camel_case_split(text: str) -> str:
""" Splits CamelCase into "Camel Case"
"""
matches = re.finditer('.+?(?:(?<=[a-z])(?=[A-Z])|' +
'(?<=[A-Z])(?=[A-Z][a-z])|$)', text)
if not matches:
return text
result_str = ''
for word in matches:
result_str += word.group(0) + ' '
return result_str.strip()
def convert_to_snake_case(text: str) -> str:
"""Convert camel case to snake case
"""
return camel_case_split(text).lower().replace(' ', '_')
def _convert_to_camel_case(text: str) -> str:
"""Convers a snake case string to camel case
"""
if '_' not in text:
return text
words = text.split('_')
result = ''
ctr = 0
for wrd in words:
if ctr > 0:
result += wrd.title()
else:
result = wrd.lower()
ctr += 1
return result
def reject_post_id(base_dir: str, nickname: str, domain: str,
post_id: str, recent_posts_cache: {}) -> None:
""" Marks the given post as rejected,
for example an announce which is too old
"""
post_filename = locate_post(base_dir, nickname, domain, post_id)
if not post_filename:
return
if recent_posts_cache.get('index'):
# if this is a full path then remove the directories
index_filename = post_filename
if '/' in post_filename:
index_filename = post_filename.split('/')[-1]
# filename of the post without any extension or path
# This should also correspond to any index entry in
# the posts cache
post_url = \
index_filename.replace('\n', '').replace('\r', '')
post_url = post_url.replace('.json', '').strip()
if post_url in recent_posts_cache['index']:
if recent_posts_cache['json'].get(post_url):
del recent_posts_cache['json'][post_url]
if recent_posts_cache['html'].get(post_url):
del recent_posts_cache['html'][post_url]
with open(post_filename + '.reject', 'w+') as reject_file:
reject_file.write('\n')
def is_chat_message(post_json_object: {}) -> bool:
"""Returns true if the given post is a chat message
Note that is_dm should be checked before calling this
"""
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if post_json_object['object']['type'] != 'ChatMessage':
return False
return True
def is_dm(post_json_object: {}) -> bool:
"""Returns true if the given post is a DM
"""
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if post_json_object['object']['type'] != 'ChatMessage':
if post_json_object['object']['type'] != 'Note' and \
post_json_object['object']['type'] != 'Page' and \
post_json_object['object']['type'] != 'Patch' and \
post_json_object['object']['type'] != 'EncryptedMessage' and \
post_json_object['object']['type'] != 'Article':
return False
if post_json_object['object'].get('moderationStatus'):
return False
fields = ('to', 'cc')
for field_name in fields:
if not post_json_object['object'].get(field_name):
continue
for to_address in post_json_object['object'][field_name]:
if to_address.endswith('#Public'):
return False
if to_address.endswith('followers'):
return False
return True
def is_reply(post_json_object: {}, actor: str) -> bool:
"""Returns true if the given post is a reply to the given actor
"""
if post_json_object['type'] != 'Create':
return False
if not has_object_dict(post_json_object):
return False
if post_json_object['object'].get('moderationStatus'):
return False
if post_json_object['object']['type'] != 'Note' and \
post_json_object['object']['type'] != 'Page' and \
post_json_object['object']['type'] != 'EncryptedMessage' and \
post_json_object['object']['type'] != 'ChatMessage' and \
post_json_object['object']['type'] != 'Article':
return False
if post_json_object['object'].get('inReplyTo'):
if isinstance(post_json_object['object']['inReplyTo'], str):
if post_json_object['object']['inReplyTo'].startswith(actor):
return True
if not post_json_object['object'].get('tag'):
return False
if not isinstance(post_json_object['object']['tag'], list):
return False
for tag in post_json_object['object']['tag']:
if not tag.get('type'):
continue
if tag['type'] == 'Mention':
if not tag.get('href'):
continue
if actor in tag['href']:
return True
return False
def contains_pgp_public_key(content: str) -> bool:
"""Returns true if the given content contains a PGP public key
"""
if '--BEGIN PGP PUBLIC KEY BLOCK--' in content:
if '--END PGP PUBLIC KEY BLOCK--' in content:
return True
return False
def is_pgp_encrypted(content: str) -> bool:
"""Returns true if the given content is PGP encrypted
"""
if '--BEGIN PGP MESSAGE--' in content:
if '--END PGP MESSAGE--' in content:
return True
return False
def invalid_ciphertext(content: str) -> bool:
"""Returns true if the given content contains an invalid key
"""
if '----BEGIN ' in content or '----END ' in content:
if not contains_pgp_public_key(content) and \
not is_pgp_encrypted(content):
return True
return False
def load_translations_from_file(base_dir: str, language: str) -> ({}, str):
"""Returns the translations dictionary
"""
if not os.path.isdir(base_dir + '/translations'):
print('ERROR: translations directory not found')
return None, None
if not language:
system_language = locale.getdefaultlocale()[0]
else:
system_language = language
if not system_language:
system_language = 'en'
if '_' in system_language:
system_language = system_language.split('_')[0]
while '/' in system_language:
system_language = system_language.split('/')[1]
if '.' in system_language:
system_language = system_language.split('.')[0]
translations_file = base_dir + '/translations/' + \
system_language + '.json'
if not os.path.isfile(translations_file):
system_language = 'en'
translations_file = base_dir + '/translations/' + \
system_language + '.json'
return load_json(translations_file), system_language
def dm_allowed_from_domain(base_dir: str,
nickname: str, domain: str,
sending_actor_domain: str) -> bool:
"""When a DM is received and the .followDMs flag file exists
Then optionally some domains can be specified as allowed,
regardless of individual follows.
i.e. Mostly you only want DMs from followers, but there are
a few particular instances that you trust
"""
dm_allowed_instances_file = \
acct_dir(base_dir, nickname, domain) + '/dmAllowedInstances.txt'
if not os.path.isfile(dm_allowed_instances_file):
return False
if sending_actor_domain + '\n' in open(dm_allowed_instances_file).read():
return True
return False
def get_occupation_skills(actor_json: {}) -> []:
"""Returns the list of skills for an actor
"""
if 'hasOccupation' not in actor_json:
return []
if not isinstance(actor_json['hasOccupation'], list):
return []
for occupation_item in actor_json['hasOccupation']:
if not isinstance(occupation_item, dict):
continue
if not occupation_item.get('@type'):
continue
if not occupation_item['@type'] == 'Occupation':
continue
if not occupation_item.get('skills'):
continue
if isinstance(occupation_item['skills'], list):
return occupation_item['skills']
if isinstance(occupation_item['skills'], str):
return [occupation_item['skills']]
break
return []
def get_occupation_name(actor_json: {}) -> str:
"""Returns the occupation name an actor
"""
if not actor_json.get('hasOccupation'):
return ""
if not isinstance(actor_json['hasOccupation'], list):
return ""
for occupation_item in actor_json['hasOccupation']:
if not isinstance(occupation_item, dict):
continue
if not occupation_item.get('@type'):
continue
if occupation_item['@type'] != 'Occupation':
continue
if not occupation_item.get('name'):
continue
if isinstance(occupation_item['name'], str):
return occupation_item['name']
break
return ""
def set_occupation_name(actor_json: {}, name: str) -> bool:
"""Sets the occupation name of an actor
"""
if not actor_json.get('hasOccupation'):
return False
if not isinstance(actor_json['hasOccupation'], list):
return False
for index, _ in enumerate(actor_json['hasOccupation']):
occupation_item = actor_json['hasOccupation'][index]
if not isinstance(occupation_item, dict):
continue
if not occupation_item.get('@type'):
continue
if occupation_item['@type'] != 'Occupation':
continue
occupation_item['name'] = name
return True
return False
def set_occupation_skills_list(actor_json: {}, skills_list: []) -> bool:
"""Sets the occupation skills for an actor
"""
if 'hasOccupation' not in actor_json:
return False
if not isinstance(actor_json['hasOccupation'], list):
return False
for index, _ in enumerate(actor_json['hasOccupation']):
occupation_item = actor_json['hasOccupation'][index]
if not isinstance(occupation_item, dict):
continue
if not occupation_item.get('@type'):
continue
if occupation_item['@type'] != 'Occupation':
continue
occupation_item['skills'] = skills_list
return True
return False
def is_account_dir(dir_name: str) -> bool:
"""Is the given directory an account within /accounts ?
"""
if '@' not in dir_name:
return False
if 'inbox@' in dir_name or 'news@' in dir_name or 'Actor@' in dir_name:
return False
return True
def permitted_dir(path: str) -> bool:
"""These are special paths which should not be accessible
directly via GET or POST
"""
if path.startswith('/wfendpoints') or \
path.startswith('/keys') or \
path.startswith('/accounts'):
return False
return True
def user_agent_domain(user_agent: str, debug: bool) -> str:
"""If the User-Agent string contains a domain
then return it
"""
if 'https://' not in user_agent and 'http://' not in user_agent:
return None
agent_domain = ''
if 'https://' in user_agent:
agent_domain = user_agent.split('https://')[1].strip()
else:
agent_domain = user_agent.split('http://')[1].strip()
if '/' in agent_domain:
agent_domain = agent_domain.split('/')[0]
if ')' in agent_domain:
agent_domain = agent_domain.split(')')[0].strip()
if ' ' in agent_domain:
agent_domain = agent_domain.replace(' ', '')
if ';' in agent_domain:
agent_domain = agent_domain.replace(';', '')
if '.' not in agent_domain:
return None
if debug:
print('User-Agent Domain: ' + agent_domain)
return agent_domain
def has_object_dict(post_json_object: {}) -> bool:
"""Returns true if the given post has an object dict
"""
if post_json_object.get('object'):
if isinstance(post_json_object['object'], dict):
return True
return False
def get_alt_path(actor: str, domain_full: str, calling_domain: str) -> str:
"""Returns alternate path from the actor
eg. https://clearnetdomain/path becomes http://oniondomain/path
"""
post_actor = actor
if calling_domain not in actor and domain_full in actor:
if calling_domain.endswith('.onion') or \
calling_domain.endswith('.i2p'):
post_actor = \
'http://' + calling_domain + actor.split(domain_full)[1]
print('Changed POST domain from ' + actor + ' to ' + post_actor)
return post_actor
def get_actor_property_url(actor_json: {}, property_name: str) -> str:
"""Returns a url property from an actor
"""
if not actor_json.get('attachment'):
return ''
property_name = property_name.lower()
for property_value in actor_json['attachment']:
if not property_value.get('name'):
continue
if not property_value['name'].lower().startswith(property_name):
continue
if not property_value.get('type'):
continue
if not property_value.get('value'):
continue
if property_value['type'] != 'PropertyValue':
continue
property_value['value'] = property_value['value'].strip()
prefixes = get_protocol_prefixes()
prefix_found = False
for prefix in prefixes:
if property_value['value'].startswith(prefix):
prefix_found = True
break
if not prefix_found:
continue
if '.' not in property_value['value']:
continue
if ' ' in property_value['value']:
continue
if ',' in property_value['value']:
continue
return property_value['value']
return ''
def remove_domain_port(domain: str) -> str:
"""If the domain has a port appended then remove it
eg. mydomain.com:80 becomes mydomain.com
"""
if ':' in domain:
if domain.startswith('did:'):
return domain
domain = domain.split(':')[0]
return domain
def get_port_from_domain(domain: str) -> int:
"""If the domain has a port number appended then return it
eg. mydomain.com:80 returns 80
"""
if ':' in domain:
if domain.startswith('did:'):
return None
port_str = domain.split(':')[1]
if port_str.isdigit():
return int(port_str)
return None
def valid_url_prefix(url: str) -> bool:
"""Does the given url have a valid prefix?
"""
if '/' not in url:
return False
prefixes = ('https:', 'http:', 'hyper:', 'i2p:', 'gnunet:')
for pre in prefixes:
if url.startswith(pre):
return True
return False
def remove_line_endings(text: str) -> str:
"""Removes any newline from the end of a string
"""
text = text.replace('\n', '')
text = text.replace('\r', '')
return text.strip()
def valid_password(password: str) -> bool:
"""Returns true if the given password is valid
"""
if len(password) < 8:
return False
return True
def is_float(value) -> bool:
"""Is the given value a float?
"""
try:
float(value)
return True
except ValueError:
return False
def date_string_to_seconds(date_str: str) -> int:
"""Converts a date string (eg "published") into seconds since epoch
"""
try:
expiry_time = \
datetime.datetime.strptime(date_str, '%Y-%m-%dT%H:%M:%SZ')
except BaseException:
print('EX: date_string_to_seconds unable to parse date ' +
str(date_str))
return None
return int(datetime.datetime.timestamp(expiry_time))
def date_seconds_to_string(date_sec: int) -> str:
"""Converts a date in seconds since epoch to a string
"""
this_date = datetime.datetime.fromtimestamp(date_sec)
return this_date.strftime("%Y-%m-%dT%H:%M:%SZ")
def has_group_type(base_dir: str, actor: str, person_cache: {},
debug: bool = False) -> bool:
"""Does the given actor url have a group type?
"""
# does the actor path clearly indicate that this is a group?
# eg. https://lemmy/c/groupname
group_paths = get_group_paths()
for grp_path in group_paths:
if grp_path in actor:
if debug:
print('grpPath ' + grp_path + ' in ' + actor)
return True
# is there a cached actor which can be examined for Group type?
return is_group_actor(base_dir, actor, person_cache, debug)
def is_group_actor(base_dir: str, actor: str, person_cache: {},
debug: bool = False) -> bool:
"""Is the given actor a group?
"""
if person_cache:
if person_cache.get(actor):
if person_cache[actor].get('actor'):
if person_cache[actor]['actor'].get('type'):
if person_cache[actor]['actor']['type'] == 'Group':
if debug:
print('Cached actor ' + actor + ' has Group type')
return True
return False
if debug:
print('Actor ' + actor + ' not in cache')
cached_actor_filename = \
base_dir + '/cache/actors/' + (actor.replace('/', '#')) + '.json'
if not os.path.isfile(cached_actor_filename):
if debug:
print('Cached actor file not found ' + cached_actor_filename)
return False
if '"type": "Group"' in open(cached_actor_filename).read():
if debug:
print('Group type found in ' + cached_actor_filename)
return True
return False
def is_group_account(base_dir: str, nickname: str, domain: str) -> bool:
"""Returns true if the given account is a group
"""
account_filename = acct_dir(base_dir, nickname, domain) + '.json'
if not os.path.isfile(account_filename):
return False
if '"type": "Group"' in open(account_filename).read():
return True
return False
def get_currencies() -> {}:
"""Returns a dictionary of currencies
"""
return {
"CA$": "CAD",
"J$": "JMD",
"£": "GBP",
"€": "EUR",
"؋": "AFN",
"ƒ": "AWG",
"₼": "AZN",
"Br": "BYN",
"BZ$": "BZD",
"$b": "BOB",
"KM": "BAM",
"P": "BWP",
"лв": "BGN",
"R$": "BRL",
"៛": "KHR",
"$U": "UYU",
"RD$": "DOP",
"$": "USD",
"₡": "CRC",
"kn": "HRK",
"₱": "CUP",
"Kč": "CZK",
"kr": "NOK",
"¢": "GHS",
"Q": "GTQ",
"L": "HNL",
"Ft": "HUF",
"Rp": "IDR",
"₹": "INR",
"﷼": "IRR",
"₪": "ILS",
"¥": "JPY",
"₩": "KRW",
"₭": "LAK",
"ден": "MKD",
"RM": "MYR",
"₨": "MUR",
"₮": "MNT",
"MT": "MZN",
"C$": "NIO",
"₦": "NGN",
"Gs": "PYG",
"zł": "PLN",
"lei": "RON",
"₽": "RUB",
"Дин": "RSD",
"S": "SOS",
"R": "ZAR",
"CHF": "CHF",
"NT$": "TWD",
"฿": "THB",
"TT$": "TTD",
"₴": "UAH",
"Bs": "VEF",
"₫": "VND",
"Z$": "ZQD"
}
def get_supported_languages(base_dir: str) -> []:
"""Returns a list of supported languages
"""
translations_dir = base_dir + '/translations'
languages_str = []
for _, _, files in os.walk(translations_dir):
for fname in files:
if not fname.endswith('.json'):
continue
lang = fname.split('.')[0]
if len(lang) == 2:
languages_str.append(lang)
break
return languages_str
def get_category_types(base_dir: str) -> []:
"""Returns the list of ontologies
"""
ontology_dir = base_dir + '/ontology'
categories = []
for _, _, files in os.walk(ontology_dir):
for fname in files:
if not fname.endswith('.json'):
continue
if '#' in fname or '~' in fname:
continue
if fname.startswith('custom'):
continue
ontology_filename = fname.split('.')[0]
if 'Types' in ontology_filename:
categories.append(ontology_filename.replace('Types', ''))
break
return categories
def get_shares_files_list() -> []:
"""Returns the possible shares files
"""
return ('shares', 'wanted')
def replace_users_with_at(actor: str) -> str:
""" https://domain/users/nick becomes https://domain/@nick
"""
u_paths = get_user_paths()
for path in u_paths:
if path in actor:
actor = actor.replace(path, '/@')
break
return actor
def has_actor(post_json_object: {}, debug: bool) -> bool:
"""Does the given post have an actor?
"""
if post_json_object.get('actor'):
if '#' in post_json_object['actor']:
return False
return True
if debug:
if post_json_object.get('type'):
msg = post_json_object['type'] + ' has missing actor'
if post_json_object.get('id'):
msg += ' ' + post_json_object['id']
print(msg)
return False
def has_object_stringType(post_json_object: {}, debug: bool) -> bool:
"""Does the given post have a type field within an object dict?
"""
if not has_object_dict(post_json_object):
if debug:
print('has_object_stringType no object found')
return False
if post_json_object['object'].get('type'):
if isinstance(post_json_object['object']['type'], str):
return True
if debug:
if post_json_object.get('type'):
print('DEBUG: ' + post_json_object['type'] +
' type within object is not a string')
if debug:
print('No type field within object ' + post_json_object['id'])
return False
def has_object_string_object(post_json_object: {}, debug: bool) -> bool:
"""Does the given post have an object string field within an object dict?
"""
if not has_object_dict(post_json_object):
if debug:
print('has_object_stringType no object found')
return False
if post_json_object['object'].get('object'):
if isinstance(post_json_object['object']['object'], str):
return True
elif debug:
if post_json_object.get('type'):
print('DEBUG: ' + post_json_object['type'] +
' object within dict is not a string')
if debug:
print('No object field within dict ' + post_json_object['id'])
return False
def has_object_string(post_json_object: {}, debug: bool) -> bool:
"""Does the given post have an object string field?
"""
if post_json_object.get('object'):
if isinstance(post_json_object['object'], str):
return True
if debug:
if post_json_object.get('type'):
print('DEBUG: ' + post_json_object['type'] +
' object is not a string')
if debug:
print('No object field within post ' + post_json_object['id'])
return False
def get_new_post_endpoints() -> []:
"""Returns a list of endpoints for new posts
"""
return (
'newpost', 'newblog', 'newunlisted', 'newfollowers', 'newdm',
'newreminder', 'newreport', 'newquestion', 'newshare', 'newwanted',
'editblogpost'
)
def get_fav_filename_from_url(base_dir: str, favicon_url: str) -> str:
"""Returns the cached filename for a favicon based upon its url
"""
if '://' in favicon_url:
favicon_url = favicon_url.split('://')[1]
if '/favicon.' in favicon_url:
favicon_url = favicon_url.replace('/favicon.', '.')
return base_dir + '/favicons/' + favicon_url.replace('/', '-')
def valid_hash_tag(hashtag: str) -> bool:
"""Returns true if the give hashtag contains valid characters
"""
# long hashtags are not valid
if len(hashtag) >= 32:
return False
if set(hashtag).issubset(VALID_HASHTAG_CHARS):
return True
if _is_valid_language(hashtag):
return True
return False
def convert_published_to_local_timezone(published, timezone: str) -> str:
"""Converts a post published time into local time
"""
from_zone = tz.gettz('UTC')
if timezone:
try:
to_zone = tz.gettz(timezone)
except BaseException:
pass
if not timezone:
return published
utc = published.replace(tzinfo=from_zone)
local_time = utc.astimezone(to_zone)
return local_time
def load_account_timezones(base_dir: str) -> {}:
"""Returns a dictionary containing the preferred timezone for each account
"""
account_timezone = {}
for subdir, dirs, files in os.walk(base_dir + '/accounts'):
for acct in dirs:
if '@' not in acct:
continue
if acct.startswith('inbox@') or acct.startswith('Actor@'):
continue
acct_dir = os.path.join(base_dir + '/accounts', acct)
tz_filename = acct_dir + '/timezone.txt'
if not os.path.isfile(tz_filename):
continue
timezone = None
with open(tz_filename, 'r') as fp_timezone:
timezone = fp_timezone.read().strip()
if timezone:
nickname = acct.split('@')[0]
account_timezone[nickname] = timezone
break
return account_timezone
def get_account_timezone(base_dir: str, nickname: str, domain: str) -> str:
"""Returns the timezone for the given account
"""
tz_filename = \
base_dir + '/accounts/' + nickname + '@' + domain + '/timezone.txt'
if not os.path.isfile(tz_filename):
return None
timezone = None
with open(tz_filename, 'r') as fp_timezone:
timezone = fp_timezone.read().strip()
return timezone
def set_account_timezone(base_dir: str, nickname: str, domain: str,
timezone: str) -> None:
"""Sets the timezone for the given account
"""
tz_filename = \
base_dir + '/accounts/' + nickname + '@' + domain + '/timezone.txt'
timezone = timezone.strip()
with open(tz_filename, 'w+') as fp_timezone:
fp_timezone.write(timezone)
def is_onion_request(calling_domain: str, referer_domain: str,
domain: str, onion_domain: str) -> bool:
"""Do the given domains indicate that this is a request
from an onion instance
"""
if not onion_domain:
return False
if domain == onion_domain:
return True
if calling_domain.endswith('.onion'):
return True
if not referer_domain:
return False
if referer_domain.endswith('.onion'):
return True
return False
def is_i2p_request(calling_domain: str, referer_domain: str,
domain: str, i2p_domain: str) -> bool:
"""Do the given domains indicate that this is a request
from an i2p instance
"""
if not i2p_domain:
return False
if domain == i2p_domain:
return True
if calling_domain.endswith('.i2p'):
return True
if not referer_domain:
return False
if referer_domain.endswith('.i2p'):
return True
return False
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