epicyon/utils.py

784 lines
27 KiB
Python

__filename__ = "utils.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.1.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"
import os
import time
import shutil
import datetime
import json
from calendar import monthrange
def removeAvatarFromCache(baseDir: str, actorStr: str) -> None:
"""Removes any existing avatar entries from the cache
This avoids duplicate entries with differing extensions
"""
avatarFilenameExtensions = ('png', 'jpg', 'gif', 'webp')
for extension in avatarFilenameExtensions:
avatarFilename = \
baseDir + '/cache/avatars/' + actorStr + '.' + extension
if os.path.isfile(avatarFilename):
os.remove(avatarFilename)
def saveJson(jsonObject: {}, filename: str) -> bool:
"""Saves json to a file
"""
tries = 0
while tries < 5:
try:
with open(filename, 'w') as fp:
fp.write(json.dumps(jsonObject))
return True
except BaseException:
print('WARN: saveJson ' + str(tries))
time.sleep(1)
tries += 1
return False
def loadJson(filename: str, delaySec=2) -> {}:
"""Makes a few attempts to load a json formatted file
"""
jsonObject = None
tries = 0
while tries < 5:
try:
with open(filename, 'r') as fp:
data = fp.read()
jsonObject = json.loads(data)
break
except BaseException:
print('WARN: loadJson exception')
if delaySec > 0:
time.sleep(delaySec)
tries += 1
return jsonObject
def loadJsonOnionify(filename: str, domain: str, onionDomain: str,
delaySec=2) -> {}:
"""Makes a few attempts to load a json formatted file
This also converts the domain name to the onion domain
"""
jsonObject = None
tries = 0
while tries < 5:
try:
with open(filename, 'r') as fp:
data = fp.read()
if data:
data = data.replace(domain, onionDomain)
data = data.replace('https:', 'http:')
print('*****data: ' + data)
jsonObject = json.loads(data)
break
except BaseException:
print('WARN: loadJson exception')
if delaySec > 0:
time.sleep(delaySec)
tries += 1
return jsonObject
def getStatusNumber() -> (str, str):
"""Returns the status number and published date
"""
currTime = datetime.datetime.utcnow()
daysSinceEpoch = (currTime - datetime.datetime(1970, 1, 1)).days
# status is the number of seconds since epoch
statusNumber = \
str(((daysSinceEpoch * 24 * 60 * 60) +
(currTime.hour * 60 * 60) +
(currTime.minute * 60) +
currTime.second) * 1000 +
int(currTime.microsecond / 1000))
# See https://github.com/tootsuite/mastodon/blob/
# 995f8b389a66ab76ec92d9a240de376f1fc13a38/lib/mastodon/snowflake.rb
# use the leftover microseconds as the sequence number
sequenceId = currTime.microsecond % 1000
# shift by 16bits "sequence data"
statusNumber = str((int(statusNumber) << 16) + sequenceId)
published = currTime.strftime("%Y-%m-%dT%H:%M:%SZ")
return statusNumber, published
def evilIncarnate() -> []:
return ('gab.com', 'gabfed.com', 'spinster.xyz',
'kiwifarms.cc', 'djitter.com')
def isEvil(domain: str) -> bool:
if not isinstance(domain, str):
print('WARN: Malformed domain ' + str(domain))
return True
# https://www.youtube.com/watch?v=5qw1hcevmdU
evilDomains = evilIncarnate()
for concentratedEvil in evilDomains:
if domain.endswith(concentratedEvil):
return True
return False
def createPersonDir(nickname: str, domain: str, baseDir: str,
dirname: str) -> str:
"""Create a directory for a person
"""
handle = nickname + '@' + domain
if not os.path.isdir(baseDir + '/accounts/' + handle):
os.mkdir(baseDir + '/accounts/' + handle)
boxDir = baseDir + '/accounts/' + handle + '/' + dirname
if not os.path.isdir(boxDir):
os.mkdir(boxDir)
return boxDir
def createOutboxDir(nickname: str, domain: str, baseDir: str) -> str:
"""Create an outbox for a person
"""
return createPersonDir(nickname, domain, baseDir, 'outbox')
def createInboxQueueDir(nickname: str, domain: str, baseDir: str) -> str:
"""Create an inbox queue and returns the feed filename and directory
"""
return createPersonDir(nickname, domain, baseDir, 'queue')
def domainPermitted(domain: str, federationList: []):
if len(federationList) == 0:
return True
if ':' in domain:
domain = domain.split(':')[0]
if domain in federationList:
return True
return False
def urlPermitted(url: str, federationList: [], capability: str):
if isEvil(url):
return False
if not federationList:
return True
for domain in federationList:
if domain in url:
return True
return False
def getDisplayName(baseDir: str, actor: str, personCache: {}) -> str:
"""Returns the display name for the given actor
"""
if '/statuses/' in actor:
actor = actor.split('/statuses/')[0]
if not personCache.get(actor):
return None
if personCache[actor].get('actor'):
if personCache[actor]['actor'].get('name'):
return personCache[actor]['actor']['name']
else:
# Try to obtain from the cached actors
cachedActorFilename = \
baseDir + '/cache/actors/' + (actor.replace('/', '#')) + '.json'
if os.path.isfile(cachedActorFilename):
actorJson = loadJson(cachedActorFilename, 1)
if actorJson:
if actorJson.get('name'):
return(actorJson['name'])
return None
def getNicknameFromActor(actor: str) -> str:
"""Returns the nickname from an actor url
"""
if '/users/' not in actor:
if '/profile/' in actor:
nickStr = actor.split('/profile/')[1].replace('@', '')
if '/' not in nickStr:
return nickStr
else:
return nickStr.split('/')[0]
if '/channel/' in actor:
nickStr = actor.split('/channel/')[1].replace('@', '')
if '/' not in nickStr:
return nickStr
else:
return nickStr.split('/')[0]
# https://domain/@nick
if '/@' in actor:
nickStr = actor.split('/@')[1]
if '/' in nickStr:
nickStr = nickStr.split('/')[0]
return nickStr
return None
nickStr = actor.split('/users/')[1].replace('@', '')
if '/' not in nickStr:
return nickStr
else:
return nickStr.split('/')[0]
def getDomainFromActor(actor: str) -> (str, int):
"""Returns the domain name from an actor url
"""
port = None
if '/profile/' in actor:
domain = actor.split('/profile/')[0].replace('https://', '')
domain = domain.replace('http://', '').replace('i2p://', '')
domain = domain.replace('dat://', '')
else:
if '/channel/' in actor:
domain = actor.split('/channel/')[0].replace('https://', '')
domain = domain.replace('http://', '').replace('i2p://', '')
domain = domain.replace('dat://', '')
else:
if '/users/' not in actor:
domain = actor.replace('https://', '').replace('http://', '')
domain = domain.replace('i2p://', '').replace('dat://', '')
if '/' in actor:
domain = domain.split('/')[0]
else:
domain = actor.split('/users/')[0].replace('https://', '')
domain = domain.replace('http://', '').replace('i2p://', '')
domain = domain.replace('dat://', '')
if ':' in domain:
portStr = domain.split(':')[1]
if not portStr.isdigit():
return None, None
port = int(portStr)
domain = domain.split(':')[0]
return domain, port
def followPerson(baseDir: str, nickname: str, domain: str,
followNickname: str, followDomain: str,
federationList: [], debug: bool,
followFile='following.txt') -> bool:
"""Adds a person to the follow list
"""
if not domainPermitted(followDomain.lower().replace('\n', ''),
federationList):
if debug:
print('DEBUG: follow of domain ' +
followDomain + ' not permitted')
return False
if debug:
print('DEBUG: follow of domain ' + followDomain)
if ':' in domain:
handle = nickname + '@' + domain.split(':')[0].lower()
else:
handle = nickname + '@' + domain.lower()
if not os.path.isdir(baseDir + '/accounts/' + handle):
print('WARN: account for ' + handle + ' does not exist')
return False
if ':' in followDomain:
handleToFollow = followNickname + '@' + followDomain.split(':')[0]
else:
handleToFollow = followNickname + '@' + followDomain
# was this person previously unfollowed?
unfollowedFilename = baseDir + '/accounts/' + handle + '/unfollowed.txt'
if os.path.isfile(unfollowedFilename):
if handleToFollow in open(unfollowedFilename).read():
# remove them from the unfollowed file
newLines = ''
with open(unfollowedFilename, "r") as f:
lines = f.readlines()
for line in lines:
if handleToFollow not in line:
newLines += line
with open(unfollowedFilename, "w") as f:
f.write(newLines)
if not os.path.isdir(baseDir + '/accounts'):
os.mkdir(baseDir + '/accounts')
handleToFollow = followNickname + '@' + followDomain
filename = baseDir + '/accounts/' + handle + '/' + followFile
if os.path.isfile(filename):
if handleToFollow in open(filename).read():
if debug:
print('DEBUG: follow already exists')
return True
# prepend to follow file
try:
with open(filename, 'r+') as followFile:
content = followFile.read()
followFile.seek(0, 0)
followFile.write(handleToFollow + '\n' + content)
if debug:
print('DEBUG: follow added')
return True
except Exception as e:
print('WARN: Failed to write entry to follow file ' +
filename + ' ' + str(e))
if debug:
print('DEBUG: creating new following file to follow ' + handleToFollow)
with open(filename, "w") as followfile:
followfile.write(handleToFollow + '\n')
return True
def locatePost(baseDir: str, nickname: str, domain: str,
postUrl: str, replies=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?
postUrl = postUrl.replace('/', '#').replace('/activity', '').strip()
boxName = 'inbox'
postFilename = baseDir + '/accounts/' + nickname + '@' + domain + \
'/' + boxName + '/' + postUrl + '.' + extension
if os.path.isfile(postFilename):
return postFilename
boxName = 'outbox'
postFilename = baseDir + '/accounts/' + nickname + '@' + domain + \
'/' + boxName + '/' + postUrl + '.' + extension
if os.path.isfile(postFilename):
return postFilename
boxName = 'tlblogs'
postFilename = baseDir + '/accounts/' + nickname + '@' + domain + \
'/' + boxName + '/' + postUrl + '.'+extension
if os.path.isfile(postFilename):
return postFilename
postFilename = baseDir + '/cache/announce/' + \
nickname + '/' + postUrl + '.' + extension
if os.path.isfile(postFilename):
return postFilename
print('WARN: unable to locate ' + nickname + ' ' +
postUrl + '.' + extension)
return None
def removeAttachment(baseDir: str, httpPrefix: str, domain: str, postJson: {}):
if not postJson.get('attachment'):
return
if not postJson['attachment'][0].get('url'):
return
# if port:
# if port != 80 and port != 443:
# if ':' not in domain:
# domain = domain + ':' + str(port)
attachmentUrl = postJson['attachment'][0]['url']
if not attachmentUrl:
return
mediaFilename = baseDir + '/' + \
attachmentUrl.replace(httpPrefix + '://' + domain + '/', '')
if os.path.isfile(mediaFilename):
os.remove(mediaFilename)
etagFilename = mediaFilename + '.etag'
if os.path.isfile(etagFilename):
os.remove(etagFilename)
postJson['attachment'] = []
def removeModerationPostFromIndex(baseDir: str, postUrl: str,
debug: bool) -> None:
"""Removes a url from the moderation index
"""
moderationIndexFile = baseDir + '/accounts/moderation.txt'
if not os.path.isfile(moderationIndexFile):
return
postId = postUrl.replace('/activity', '')
if postId in open(moderationIndexFile).read():
with open(moderationIndexFile, "r") as f:
lines = f.readlines()
with open(moderationIndexFile, "w+") as f:
for line in lines:
if line.strip("\n") != postId:
f.write(line)
else:
if debug:
print('DEBUG: removed ' + postId +
' from moderation index')
def deletePost(baseDir: str, httpPrefix: str,
nickname: str, domain: str, postFilename: str,
debug: bool) -> None:
"""Recursively deletes a post and its replies and attachments
"""
postJsonObject = loadJson(postFilename, 1)
if postJsonObject:
# don't allow deletion of bookmarked posts
bookmarksIndexFilename = \
baseDir + '/accounts/' + nickname + '@' + domain + \
'/bookmarks.index'
if os.path.isfile(bookmarksIndexFilename):
bookmarkIndex = postFilename.split('/')[-1] + '\n'
if bookmarkIndex in open(bookmarksIndexFilename).read():
return
# remove any attachment
removeAttachment(baseDir, httpPrefix, domain, postJsonObject)
# remove any mute file
muteFilename = postFilename + '.muted'
if os.path.isfile(muteFilename):
os.remove(muteFilename)
# remove cached html version of the post
cachedPostFilename = \
getCachedPostFilename(baseDir, nickname, domain, postJsonObject)
if cachedPostFilename:
if os.path.isfile(cachedPostFilename):
os.remove(cachedPostFilename)
# removePostFromCache(postJsonObject,recentPostsCache)
hasObject = False
if postJsonObject.get('object'):
hasObject = True
# remove from moderation index file
if hasObject:
if isinstance(postJsonObject['object'], dict):
if postJsonObject['object'].get('moderationStatus'):
if postJsonObject.get('id'):
postId = postJsonObject['id'].replace('/activity', '')
removeModerationPostFromIndex(baseDir, postId, debug)
# remove any hashtags index entries
removeHashtagIndex = False
if hasObject:
if hasObject and isinstance(postJsonObject['object'], dict):
if postJsonObject['object'].get('content'):
if '#' in postJsonObject['object']['content']:
removeHashtagIndex = True
if removeHashtagIndex:
if postJsonObject['object'].get('id') and \
postJsonObject['object'].get('tag'):
# get the id of the post
postId = \
postJsonObject['object']['id'].replace('/activity', '')
for tag in postJsonObject['object']['tag']:
if tag['type'] != 'Hashtag':
continue
if not tag.get('name'):
continue
# find the index file for this tag
tagIndexFilename = \
baseDir + '/tags/' + tag['name'][1:] + '.txt'
if not os.path.isfile(tagIndexFilename):
continue
# remove postId from the tag index file
lines = None
with open(tagIndexFilename, "r") as f:
lines = f.readlines()
if lines:
newlines = ''
for l in lines:
if postId in l:
continue
newlines += l
if not newlines.strip():
# if there are no lines then remove the
# hashtag file
os.remove(tagIndexFilename)
else:
with open(tagIndexFilename, "w+") as f:
f.write(newlines)
# remove any replies
repliesFilename = postFilename.replace('.json', '.replies')
if os.path.isfile(repliesFilename):
if debug:
print('DEBUG: removing replies to ' + postFilename)
with open(repliesFilename, 'r') as f:
for replyId in f:
replyFile = locatePost(baseDir, nickname, domain, replyId)
if replyFile:
if os.path.isfile(replyFile):
deletePost(baseDir, httpPrefix,
nickname, domain, replyFile, debug)
# remove the replies file
os.remove(repliesFilename)
# finally, remove the post itself
os.remove(postFilename)
def validNickname(domain: str, nickname: str) -> bool:
forbiddenChars = ('.', ' ', '/', '?', ':', ';', '@')
for c in forbiddenChars:
if c in nickname:
return False
if nickname == domain:
return False
reservedNames = ('inbox', 'dm', 'outbox', 'following',
'public', 'followers', 'profile',
'channel', 'capabilities', 'calendar',
'tlreplies', 'tlmedia', 'tlblogs',
'moderation', 'activity', 'undo',
'reply', 'replies', 'question', 'like',
'likes', 'users', 'statuses',
'updates', 'repeat', 'announce',
'shares')
if nickname in reservedNames:
return False
return True
def noOfAccounts(baseDir: str) -> bool:
"""Returns the number of accounts on the system
"""
accountCtr = 0
for subdir, dirs, files in os.walk(baseDir + '/accounts'):
for account in dirs:
if '@' in account:
if not account.startswith('inbox@'):
accountCtr += 1
return accountCtr
def noOfActiveAccountsMonthly(baseDir: str, months: int) -> bool:
"""Returns the number of accounts on the system this month
"""
accountCtr = 0
currTime = int(time.time())
monthSeconds = int(60*60*24*30*months)
for subdir, dirs, files in os.walk(baseDir + '/accounts'):
for account in dirs:
if '@' in account:
if not account.startswith('inbox@'):
lastUsedFilename = \
baseDir + '/accounts/' + account + '/.lastUsed'
if os.path.isfile(lastUsedFilename):
with open(lastUsedFilename, 'r') as lastUsedFile:
lastUsed = lastUsedFile.read()
if lastUsed.isdigit():
timeDiff = (currTime - int(lastUsed))
if timeDiff < monthSeconds:
accountCtr += 1
return accountCtr
def isPublicPostFromUrl(baseDir: str, nickname: str, domain: str,
postUrl: str) -> bool:
"""Returns whether the given url is a public post
"""
postFilename = locatePost(baseDir, nickname, domain, postUrl)
if not postFilename:
return False
postJsonObject = loadJson(postFilename, 1)
if not postJsonObject:
return False
return isPublicPost(postJsonObject)
def isPublicPost(postJsonObject: {}) -> bool:
"""Returns true if the given post is public
"""
if not postJsonObject.get('type'):
return False
if postJsonObject['type'] != 'Create':
return False
if not postJsonObject.get('object'):
return False
if not isinstance(postJsonObject['object'], dict):
return False
if not postJsonObject['object'].get('to'):
return False
for recipient in postJsonObject['object']['to']:
if recipient.endswith('#Public'):
return True
return False
def copytree(src: str, dst: str, symlinks=False, ignore=None):
"""Copy a directory
"""
for item in os.listdir(src):
s = os.path.join(src, item)
d = os.path.join(dst, item)
if os.path.isdir(s):
shutil.copytree(s, d, symlinks, ignore)
else:
shutil.copy2(s, d)
def getCachedPostDirectory(baseDir: str, nickname: str, domain: str) -> str:
"""Returns the directory where the html post cache exists
"""
htmlPostCacheDir = baseDir + '/accounts/' + \
nickname + '@' + domain + '/postcache'
return htmlPostCacheDir
def getCachedPostFilename(baseDir: str, nickname: str, domain: str,
postJsonObject: {}) -> str:
"""Returns the html cache filename for the given post
"""
cachedPostDir = getCachedPostDirectory(baseDir, nickname, domain)
if not os.path.isdir(cachedPostDir):
# print('ERROR: invalid html cache directory '+cachedPostDir)
return None
if '@' not in cachedPostDir:
# print('ERROR: invalid html cache directory '+cachedPostDir)
return None
cachedPostFilename = \
cachedPostDir + \
'/' + postJsonObject['id'].replace('/activity', '').replace('/', '#')
cachedPostFilename = cachedPostFilename + '.html'
return cachedPostFilename
def removePostFromCache(postJsonObject: {}, recentPostsCache: {}):
""" if the post exists in the recent posts cache then remove it
"""
if not postJsonObject.get('id'):
return
if not recentPostsCache.get('index'):
return
postId = postJsonObject['id']
if '#' in postId:
postId = postId.split('#', 1)[0]
postId = postId.replace('/activity', '').replace('/', '#')
if postId not in recentPostsCache['index']:
return
if recentPostsCache['json'].get(postId):
del recentPostsCache['json'][postId]
if recentPostsCache['html'].get(postId):
del recentPostsCache['html'][postId]
recentPostsCache['index'].remove(postId)
def updateRecentPostsCache(recentPostsCache: {}, maxRecentPosts: int,
postJsonObject: {}, htmlStr: str) -> None:
"""Store recent posts in memory so that they can be quickly recalled
"""
if not postJsonObject.get('id'):
return
postId = postJsonObject['id']
if '#' in postId:
postId = postId.split('#', 1)[0]
postId = postId.replace('/activity', '').replace('/', '#')
if recentPostsCache.get('index'):
if postId in recentPostsCache['index']:
return
recentPostsCache['index'].append(postId)
postJsonObject['muted'] = False
recentPostsCache['json'][postId] = json.dumps(postJsonObject)
recentPostsCache['html'][postId] = htmlStr
while len(recentPostsCache['html'].items()) > maxRecentPosts:
recentPostsCache['index'].pop(0)
del recentPostsCache['json'][postId]
del recentPostsCache['html'][postId]
else:
recentPostsCache['index'] = [postId]
recentPostsCache['json'] = {}
recentPostsCache['html'] = {}
recentPostsCache['json'][postId] = json.dumps(postJsonObject)
recentPostsCache['html'][postId] = htmlStr
def fileLastModified(filename: str) -> str:
"""Returns the date when a file was last modified
"""
t = os.path.getmtime(filename)
modifiedTime = datetime.datetime.fromtimestamp(t)
return modifiedTime.strftime("%Y-%m-%dT%H:%M:%SZ")
def daysInMonth(year: int, monthNumber: int) -> int:
"""Returns the number of days in the month
"""
if monthNumber < 1 or monthNumber > 12:
return None
daysRange = monthrange(year, monthNumber)
return daysRange[1]
def mergeDicts(dict1: {}, dict2: {}) -> {}:
"""Merges two dictionaries
"""
res = {**dict1, **dict2}
return res
def isBlogPost(postJsonObject: {}) -> bool:
"""Is the given post a blog post?
"""
if postJsonObject['type'] != 'Create':
return False
if not postJsonObject.get('object'):
return False
if not isinstance(postJsonObject['object'], dict):
return False
if not postJsonObject['object'].get('type'):
return False
if not postJsonObject['object'].get('content'):
return False
if postJsonObject['object']['type'] != 'Article':
return False
return True
def searchBoxPosts(baseDir: str, nickname: str, domain: str,
searchStr: str, maxResults: int,
boxName='outbox') -> []:
"""Search your posts and return a list of the filenames
containing matching strings
"""
path = baseDir + '/accounts/' + nickname + '@' + domain + '/' + boxName
if not os.path.isdir(path):
return []
searchStr = searchStr.lower().strip()
if '+' in searchStr:
searchWords = searchStr.split('+')
for index in range(len(searchWords)):
searchWords[index] = searchWords[index].strip()
print('SEARCH: ' + str(searchWords))
else:
searchWords = [searchStr]
res = []
for root, dirs, fnames in os.walk(path):
for fname in fnames:
filePath = os.path.join(root, fname)
with open(filePath, 'r') as postFile:
data = postFile.read().lower()
notFound = False
for keyword in searchWords:
if keyword not in data:
notFound = True
break
if notFound:
continue
res.append(filePath)
if len(res) >= maxResults:
return res
return res
def getFileCaseInsensitive(path: str) -> str:
"""Returns a case specific filename given a case insensitive version of it
"""
directory, filename = os.path.split(path)
directory, filename = (directory or '.'), filename.lower()
for f in os.listdir(directory):
newpath = os.path.join(directory, f)
if os.path.isfile(newpath) and f.lower() == filename:
return newpath
return path