mirror of https://gitlab.com/bashrc2/epicyon
434 lines
16 KiB
Python
434 lines
16 KiB
Python
__filename__ = "utils.py"
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__author__ = "Bob Mottram"
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__license__ = "AGPL3+"
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__version__ = "1.0.0"
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__maintainer__ = "Bob Mottram"
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__email__ = "bob@freedombone.net"
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__status__ = "Production"
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import os
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import time
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import shutil
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import datetime
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import commentjson
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def saveJson(jsonObject: {},filename: str) -> bool:
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"""Saves json to a file
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"""
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tries=0
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while tries<5:
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try:
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with open(filename, 'w') as fp:
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commentjson.dump(jsonObject, fp, indent=2, sort_keys=False)
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return True
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except:
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print('WARN: saveJson')
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time.sleep(1)
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tries+=1
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return False
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def loadJson(filename: str) -> {}:
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"""Makes a few attempts to load a json formatted file
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"""
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jsonObject=None
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tries=0
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while tries<5:
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try:
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with open(filename, 'r') as fp:
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jsonObject=commentjson.load(fp)
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break
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except:
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print('WARN: loadJson exception')
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time.sleep(2)
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tries+=1
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return jsonObject
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def getStatusNumber() -> (str,str):
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"""Returns the status number and published date
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"""
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currTime=datetime.datetime.utcnow()
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daysSinceEpoch=(currTime - datetime.datetime(1970,1,1)).days
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# status is the number of seconds since epoch
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statusNumber=str(((daysSinceEpoch*24*60*60) + (currTime.hour*60*60) + (currTime.minute*60) + currTime.second)*1000 + int(currTime.microsecond/1000))
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# See https://github.com/tootsuite/mastodon/blob/995f8b389a66ab76ec92d9a240de376f1fc13a38/lib/mastodon/snowflake.rb
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# use the leftover microseconds as the sequence number
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sequenceId=currTime.microsecond % 1000
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# shift by 16bits "sequence data"
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statusNumber=str((int(statusNumber)<<16)+sequenceId)
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published=currTime.strftime("%Y-%m-%dT%H:%M:%SZ")
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return statusNumber,published
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def isEvil(domain: str) -> bool:
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# https://www.youtube.com/watch?v=5qw1hcevmdU
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evilDomains=['gab.com','gabfed.com','spinster.xyz','kiwifarms.cc','djitter.com']
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for concentratedEvil in evilDomains:
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if domain.endswith(concentratedEvil):
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return True
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return False
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def createPersonDir(nickname: str,domain: str,baseDir: str,dirname: str) -> str:
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"""Create a directory for a person
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"""
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handle=nickname+'@'+domain
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if not os.path.isdir(baseDir+'/accounts/'+handle):
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os.mkdir(baseDir+'/accounts/'+handle)
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boxDir=baseDir+'/accounts/'+handle+'/'+dirname
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if not os.path.isdir(boxDir):
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os.mkdir(boxDir)
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return boxDir
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def createOutboxDir(nickname: str,domain: str,baseDir: str) -> str:
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"""Create an outbox for a person
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"""
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return createPersonDir(nickname,domain,baseDir,'outbox')
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def createInboxQueueDir(nickname: str,domain: str,baseDir: str) -> str:
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"""Create an inbox queue and returns the feed filename and directory
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"""
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return createPersonDir(nickname,domain,baseDir,'queue')
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def domainPermitted(domain: str, federationList: []):
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if len(federationList)==0:
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return True
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if ':' in domain:
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domain=domain.split(':')[0]
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if domain in federationList:
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return True
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return False
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def urlPermitted(url: str, federationList: [],capability: str):
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if isEvil(url):
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return False
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if len(federationList)==0:
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return True
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for domain in federationList:
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if domain in url:
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return True
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return False
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def getDisplayName(baseDir: str,actor: str,personCache: {}) -> str:
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"""Returns the display name for the given actor
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"""
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if '/statuses/' in actor:
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actor=actor.split('/statuses/')[0]
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if not personCache.get(actor):
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return None
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if personCache[actor].get('actor'):
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if personCache[actor]['actor'].get('name'):
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return personCache[actor]['actor']['name']
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else:
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# Try to obtain from the cached actors
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cachedActorFilename=baseDir+'/cache/actors/'+actor.replace('/','#')+'.json'
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if os.path.isfile(cachedActorFilename):
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actorJson=None
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tries=0
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while tries<5:
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try:
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with open(cachedActorFilename, 'r') as fp:
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actorJson=commentjson.load(fp)
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break
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except:
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print('WARN: getDisplayName')
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time.sleep(1)
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tries+=1
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if actorJson:
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if actorJson.get('name'):
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return(actorJson['name'])
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return None
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def getNicknameFromActor(actor: str) -> str:
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"""Returns the nickname from an actor url
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"""
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if '/users/' not in actor:
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if '/profile/' in actor:
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nickStr=actor.split('/profile/')[1].replace('@','')
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if '/' not in nickStr:
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return nickStr
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else:
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return nickStr.split('/')[0]
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if '/channel/' in actor:
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nickStr=actor.split('/channel/')[1].replace('@','')
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if '/' not in nickStr:
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return nickStr
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else:
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return nickStr.split('/')[0]
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# https://domain/@nick
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if '/@' in actor:
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nickStr=actor.split('/@')[1]
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if '/' in nickStr:
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nickStr=nickStr.split('/')[0]
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return nickStr
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return None
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nickStr=actor.split('/users/')[1].replace('@','')
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if '/' not in nickStr:
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return nickStr
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else:
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return nickStr.split('/')[0]
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def getDomainFromActor(actor: str) -> (str,int):
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"""Returns the domain name from an actor url
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"""
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port=None
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if '/profile/' in actor:
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domain = actor.split('/profile/')[0].replace('https://','').replace('http://','').replace('dat://','')
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else:
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if '/channel/' in actor:
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domain = actor.split('/channel/')[0].replace('https://','').replace('http://','').replace('dat://','')
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else:
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if '/users/' not in actor:
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domain = actor.replace('https://','').replace('http://','').replace('dat://','')
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if '/' in actor:
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domain=domain.split('/')[0]
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else:
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domain = actor.split('/users/')[0].replace('https://','').replace('http://','').replace('dat://','')
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if ':' in domain:
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port=int(domain.split(':')[1])
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domain=domain.split(':')[0]
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return domain,port
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def followPerson(baseDir: str,nickname: str, domain: str, \
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followNickname: str, followDomain: str, \
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federationList: [],debug: bool, \
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followFile='following.txt') -> bool:
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"""Adds a person to the follow list
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"""
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if not domainPermitted(followDomain.lower().replace('\n',''), \
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federationList):
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if debug:
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print('DEBUG: follow of domain '+followDomain+' not permitted')
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return False
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if debug:
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print('DEBUG: follow of domain '+followDomain)
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if ':' in domain:
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handle=nickname+'@'+domain.split(':')[0].lower()
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else:
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handle=nickname+'@'+domain.lower()
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if ':' in followDomain:
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handleToFollow=followNickname+'@'+followDomain.split(':')[0].lower()
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else:
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handleToFollow=followNickname+'@'+followDomain.lower()
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if not os.path.isdir(baseDir+'/accounts'):
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os.mkdir(baseDir+'/accounts')
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if not os.path.isdir(baseDir+'/accounts/'+handle):
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os.mkdir(baseDir+'/accounts/'+handle)
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filename=baseDir+'/accounts/'+handle+'/'+followFile
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if os.path.isfile(filename):
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if handleToFollow in open(filename).read():
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if debug:
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print('DEBUG: follow already exists')
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return True
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# prepend to follow file
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try:
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with open(filename, 'r+') as followFile:
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content = followFile.read()
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followFile.seek(0, 0)
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followFile.write(followNickname+'@'+followDomain+'\n'+content)
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if debug:
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print('DEBUG: follow added')
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return True
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except Exception as e:
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print('WARN: Failed to write entry to follow file '+filename+' '+str(e))
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if debug:
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print('DEBUG: creating new following file')
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with open(filename, "w") as followfile:
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followfile.write(followNickname+'@'+followDomain+'\n')
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return True
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def locatePost(baseDir: str,nickname: str,domain: str,postUrl: str,replies=False) -> str:
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"""Returns the filename for the given status post url
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"""
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if not replies:
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extension='json'
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else:
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extension='replies'
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# if this post in the shared inbox?
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handle='inbox@'+domain
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boxName='inbox'
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postUrl=postUrl.replace('/','#')
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postFilename=baseDir+'/accounts/'+nickname+'@'+domain+'/'+boxName+'/'+postUrl+'.'+extension
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if not os.path.isfile(postFilename):
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boxName='outbox'
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postFilename=baseDir+'/accounts/'+nickname+'@'+domain+'/'+boxName+'/'+postUrl+'.'+extension
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if not os.path.isfile(postFilename):
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# if this post in the inbox of the person?
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boxName='inbox'
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postFilename=baseDir+'/accounts/'+nickname+'@'+domain+'/'+boxName+'/'+postUrl+'.'+extension
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if not os.path.isfile(postFilename):
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postFilename=baseDir+'/cache/announce/'+nickname+'/'+postUrl+'.'+extension
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if not os.path.isfile(postFilename):
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postFilename=None
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return postFilename
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def removeAttachment(baseDir: str,httpPrefix: str,domain: str,postJson: {}):
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if not postJson.get('attachment'):
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return
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if not postJson['attachment'][0].get('url'):
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return
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if port:
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if port!=80 and port!=443:
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if ':' not in domain:
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domain=domain+':'+str(port)
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attachmentUrl=postJson['attachment'][0]['url']
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if not attachmentUrl:
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return
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mediaFilename=baseDir+'/'+attachmentUrl.replace(httpPrefix+'://'+domain+'/','')
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if os.path.isfile(mediaFilename):
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os.remove(mediaFilename)
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postJson['attachment']=[]
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def removeModerationPostFromIndex(baseDir: str,postUrl: str,debug: bool) -> None:
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"""Removes a url from the moderation index
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"""
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moderationIndexFile=baseDir+'/accounts/moderation.txt'
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if not os.path.isfile(moderationIndexFile):
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return
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postId=postUrl.replace('/activity','')
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if postId in open(moderationIndexFile).read():
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with open(moderationIndexFile, "r") as f:
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lines = f.readlines()
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with open(moderationIndexFile, "w+") as f:
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for line in lines:
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if line.strip("\n") != postId:
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f.write(line)
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else:
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if debug:
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print('DEBUG: removed '+postId+' from moderation index')
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def deletePost(baseDir: str,httpPrefix: str,nickname: str,domain: str,postFilename: str,debug: bool):
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"""Recursively deletes a post and its replies and attachments
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"""
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postJsonObject=None
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tries=0
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while tries<5:
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try:
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with open(postFilename, 'r') as fp:
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postJsonObject=commentjson.load(fp)
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break
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except:
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print('WARN: deletePost')
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time.sleep(1)
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tries+=1
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if postJsonObject:
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# remove any attachment
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removeAttachment(baseDir,httpPrefix,domain,postJsonObject)
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# remove from moderation index file
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if postJsonObject.get('moderationStatus'):
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if postJsonObject.get('object'):
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if isinstance(postJsonObject['object'], dict):
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if postJsonObject['object'].get('id'):
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postId=postJsonObject['object']['id'].replace('/activity','')
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removeModerationPostFromIndex(baseDir,postId,debug)
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# remove any hashtags index entries
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removeHashtagIndex=False
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if postJsonObject.get('object'):
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if isinstance(postJsonObject['object'], dict):
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if postJsonObject['object'].get('content'):
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if '#' in postJsonObject['object']['content']:
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removeHashtagIndex=True
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if removeHashtagIndex:
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if postJsonObject['object'].get('id') and postJsonObject['object'].get('tag'):
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# get the id of the post
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postId=postJsonObject['object']['id'].replace('/activity','')
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for tag in postJsonObject['object']['tag']:
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if tag['type']!='Hashtag':
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continue
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# find the index file for this tag
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tagIndexFilename=baseDir+'/tags/'+tag['name'][1:]+'.txt'
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if not os.path.isfile(tagIndexFilename):
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continue
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# remove postId from the tag index file
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with open(tagIndexFilename, "r") as f:
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lines = f.readlines()
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with open(tagIndexFilename, "w+") as f:
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for line in lines:
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if line.strip("\n") != postId:
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f.write(line)
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# remove any replies
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repliesFilename=postFilename.replace('.json','.replies')
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if os.path.isfile(repliesFilename):
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if debug:
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print('DEBUG: removing replies to '+postFilename)
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with open(repliesFilename,'r') as f:
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for replyId in f:
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replyFile=locatePost(baseDir,nickname,domain,replyId)
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if replyFile:
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if os.path.isfile(replyFile):
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deletePost(baseDir,nickname,domain,replyFile,debug)
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# remove the replies file
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os.remove(repliesFilename)
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# finally, remove the post itself
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os.remove(postFilename)
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def validNickname(domain: str,nickname: str) -> bool:
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forbiddenChars=['.',' ','/','?',':',';','@']
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for c in forbiddenChars:
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if c in nickname:
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return False
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if nickname==domain:
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return False
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reservedNames=['inbox','dm','outbox','following','public','followers','profile','channel','capabilities','calendar','tlreplies','tlmedia','moderation']
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if nickname in reservedNames:
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return False
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return True
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def noOfAccounts(baseDir: str) -> bool:
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"""Returns the number of accounts on the system
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"""
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accountCtr=0
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for subdir, dirs, files in os.walk(baseDir+'/accounts'):
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for account in dirs:
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if '@' in account:
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if not account.startswith('inbox'):
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accountCtr+=1
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return accountCtr
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def isPublicPost(postJsonObject: {}) -> bool:
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"""Returns true if the given post is public
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"""
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if not postJsonObject.get('type'):
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return False
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if postJsonObject['type']!='Create':
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return False
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if not postJsonObject.get('object'):
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return False
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if not isinstance(postJsonObject['object'], dict):
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return False
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if not postJsonObject['object'].get('to'):
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return False
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for recipient in postJsonObject['object']['to']:
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if recipient.endswith('#Public'):
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return True
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return False
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def copytree(src: str, dst: str, symlinks=False, ignore=None):
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"""Copy a directory
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"""
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for item in os.listdir(src):
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s = os.path.join(src, item)
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d = os.path.join(dst, item)
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if os.path.isdir(s):
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shutil.copytree(s, d, symlinks, ignore)
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else:
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shutil.copy2(s, d)
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def getCachedPostDirectory(baseDir: str,nickname: str,domain: str) -> str:
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"""Returns the directory where the html post cache exists
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"""
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htmlPostCacheDir=baseDir+'/accounts/'+nickname+'@'+domain+'/postcache'
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return htmlPostCacheDir
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def getCachedPostFilename(baseDir: str,nickname: str,domain: str, \
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postJsonObject: {}) -> str:
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"""Returns the html cache filename for the given post
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"""
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cachedPostFilename= \
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getCachedPostDirectory(baseDir,nickname,domain)+ \
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'/'+postJsonObject['id'].replace('/activity','').replace('/','#')+'.html'
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return cachedPostFilename
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