epicyon/follow.py

388 lines
16 KiB
Python

__filename__ = "follow.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "0.0.1"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"
import json
import commentjson
from pprint import pprint
import os
import sys
from person import validNickname
from utils import domainPermitted
from utils import getDomainFromActor
from utils import getNicknameFromActor
from utils import getStatusNumber
from utils import followPerson
from posts import sendSignedJson
from capabilities import isCapable
from acceptreject import createAccept
def getFollowersOfPerson(baseDir: str, \
nickname: str,domain: str, \
followFile='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=[]
handle=nickname.lower()+'@'+domain.lower()
if not os.path.isdir(baseDir+'/accounts/'+handle):
return followers
for subdir, dirs, files in os.walk(baseDir+'/accounts'):
for account in dirs:
filename = os.path.join(subdir, account)+'/'+followFile
if account == handle or account.startswith('inbox@'):
continue
if not os.path.isfile(filename):
continue
with open(filename, 'r') as followingfile:
for followingHandle in followingfile:
if followingHandle.replace('\n','')==handle:
if account not in followers:
followers.append(account)
break
return followers
def followerOfPerson(baseDir: str,nickname: str, domain: str, \
followerNickname: str, followerDomain: str, \
federationList: [],debug :bool) -> bool:
"""Adds a follower of the given person
"""
return followPerson(baseDir,nickname,domain, \
followerNickname,followerDomain, \
federationList,debug,'followers.txt')
def unfollowPerson(baseDir: str,nickname: str, domain: str, \
followNickname: str, followDomain: str, \
followFile='following.txt') -> None:
"""Removes a person to the follow list
"""
handle=nickname.lower()+'@'+domain.lower()
handleToUnfollow=followNickname.lower()+'@'+followDomain.lower()
if not os.path.isdir(baseDir+'/accounts'):
os.mkdir(baseDir+'/accounts')
if not os.path.isdir(baseDir+'/accounts/'+handle):
os.mkdir(baseDir+'/accounts/'+handle)
filename=baseDir+'/accounts/'+handle+'/'+followFile
if os.path.isfile(filename):
if handleToUnfollow not in open(filename).read():
return
with open(filename, "r") as f:
lines = f.readlines()
with open(filename, "w") as f:
for line in lines:
if line.strip("\n") != handleToUnfollow:
f.write(line)
def unfollowerOfPerson(baseDir: str,nickname: str,domain: str, \
followerNickname: str,followerDomain: str) -> None:
"""Remove a follower of a person
"""
unfollowPerson(baseDir,nickname,domain, \
followerNickname,followerDomain,'followers.txt')
def clearFollows(baseDir: str,nickname: str,domain: str, \
followFile='following.txt') -> None:
"""Removes all follows
"""
handle=nickname.lower()+'@'+domain.lower()
if not os.path.isdir(baseDir+'/accounts'):
os.mkdir(baseDir+'/accounts')
if not os.path.isdir(baseDir+'/accounts/'+handle):
os.mkdir(baseDir+'/accounts/'+handle)
filename=baseDir+'/accounts/'+handle+'/'+followFile
if os.path.isfile(filename):
os.remove(filename)
def clearFollowers(baseDir: str,nickname: str,domain: str) -> None:
"""Removes all followers
"""
clearFollows(baseDir,nickname, domain,'followers.txt')
def getNoOfFollows(baseDir: str,nickname: str,domain: str, \
followFile='following.txt') -> int:
"""Returns the number of follows or followers
"""
handle=nickname.lower()+'@'+domain.lower()
filename=baseDir+'/accounts/'+handle+'/'+followFile
if not os.path.isfile(filename):
return 0
ctr = 0
with open(filename, "r") as f:
lines = f.readlines()
for line in lines:
if '#' not in line:
if '@' in line and '.' in line and not line.startswith('http'):
ctr += 1
elif line.startswith('http') and '/users/' in line:
ctr += 1
return ctr
def getNoOfFollowers(baseDir: str,nickname: str,domain: str) -> int:
"""Returns the number of followers of the given person
"""
return getNoOfFollows(baseDir,nickname,domain,'followers.txt')
def getFollowingFeed(baseDir: str,domain: str,port: int,path: str, \
httpPrefix: str, followsPerPage=12, \
followFile='following') -> {}:
"""Returns the following and followers feeds from GET requests
"""
if '/'+followFile not in path:
return None
# handle page numbers
headerOnly=True
pageNumber=None
if '?page=' in path:
pageNumber=path.split('?page=')[1]
if pageNumber=='true':
pageNumber=1
else:
try:
pageNumber=int(pageNumber)
except:
pass
path=path.split('?page=')[0]
headerOnly=False
if not path.endswith('/'+followFile):
return None
nickname=None
if path.startswith('/users/'):
nickname=path.replace('/users/','',1).replace('/'+followFile,'')
if path.startswith('/@'):
nickname=path.replace('/@','',1).replace('/'+followFile,'')
if not nickname:
return None
if not validNickname(nickname):
return None
if port!=80 and port!=443:
domain=domain+':'+str(port)
if headerOnly:
following = {
'@context': 'https://www.w3.org/ns/activitystreams',
'first': httpPrefix+'://'+domain+'/users/'+nickname+'/'+followFile+'?page=1',
'id': httpPrefix+'://'+domain+'/users/'+nickname+'/'+followFile,
'totalItems': getNoOfFollows(baseDir,nickname,domain),
'type': 'OrderedCollection'}
return following
if not pageNumber:
pageNumber=1
nextPageNumber=int(pageNumber+1)
following = {
'@context': 'https://www.w3.org/ns/activitystreams',
'id': httpPrefix+'://'+domain+'/users/'+nickname+'/'+followFile+'?page='+str(pageNumber),
'orderedItems': [],
'partOf': httpPrefix+'://'+domain+'/users/'+nickname+'/'+followFile,
'totalItems': 0,
'type': 'OrderedCollectionPage'}
handle=nickname.lower()+'@'+domain.lower()
filename=baseDir+'/accounts/'+handle+'/'+followFile+'.txt'
if not os.path.isfile(filename):
return following
currPage=1
pageCtr=0
totalCtr=0
with open(filename, "r") as f:
lines = f.readlines()
for line in lines:
if '#' not in line:
if '@' in line and '.' in line and not line.startswith('http'):
pageCtr += 1
totalCtr += 1
if currPage==pageNumber:
url = httpPrefix + '://' + line.lower().replace('\n','').split('@')[1] + \
'/users/' + line.lower().replace('\n','').split('@')[0]
following['orderedItems'].append(url)
elif (line.startswith('http') or line.startswith('dat')) and '/users/' in line:
pageCtr += 1
totalCtr += 1
if currPage==pageNumber:
following['orderedItems'].append(line.lower().replace('\n',''))
if pageCtr>=followsPerPage:
pageCtr=0
currPage += 1
following['totalItems']=totalCtr
lastPage=int(totalCtr/followsPerPage)
if lastPage<1:
lastPage=1
if nextPageNumber>lastPage:
following['next']=httpPrefix+'://'+domain+'/users/'+nickname+'/'+followFile+'?page='+str(lastPage)
return following
def receiveFollowRequest(session,baseDir: str,httpPrefix: str, \
port: int,sendThreads: [],postLog: [], \
cachedWebfingers: {},personCache: {}, \
messageJson: {},federationList: [], \
ocapGranted: {},debug : bool) -> bool:
"""Receives a follow request within the POST section of HTTPServer
"""
if not messageJson['type'].startswith('Follow'):
return False
if not messageJson.get('actor'):
if debug:
print('DEBUG: follow request has no actor')
return False
if '/users/' not in messageJson['actor']:
if debug:
print('DEBUG: "users" missing from actor')
return False
domain,tempPort=getDomainFromActor(messageJson['actor'])
fromPort=port
if tempPort:
fromPort=tempPort
if not domainPermitted(domain,federationList):
if debug:
print('DEBUG: follower from domain not permitted - '+domain)
return False
nickname=getNicknameFromActor(messageJson['actor'])
if not nickname:
if debug:
print('DEBUG: follow request does not contain a nickname')
return False
handle=nickname.lower()+'@'+domain.lower()
if '/users/' not in messageJson['object']:
if debug:
print('DEBUG: "users" not found within object')
return False
domainToFollow,tempPort=getDomainFromActor(messageJson['object'])
if not domainPermitted(domainToFollow,federationList):
if debug:
print('DEBUG: follow domain not permitted '+domainToFollow)
return False
nicknameToFollow=getNicknameFromActor(messageJson['object'])
if not nicknameToFollow:
if debug:
print('DEBUG: follow request does not contain a nickname for the account followed')
return False
handleToFollow=nicknameToFollow.lower()+'@'+domainToFollow.lower()
if domainToFollow==domain:
if not os.path.isdir(baseDir+'/accounts/'+handleToFollow):
if debug:
print('DEBUG: followed account not found - '+ \
baseDir+'/accounts/'+handleToFollow)
return False
if not followerOfPerson(baseDir,nicknameToFollow,domainToFollow, \
nickname,domain,federationList,debug):
if debug:
print('DEBUG: '+nickname+'@'+domain+ \
' is already a follower of '+ \
nicknameToFollow+'@'+domainToFollow)
return False
# send accept back
if debug:
print('DEBUG: sending Accept for follow request which arrived at '+ \
nicknameToFollow+'@'+domainToFollow+' back to '+nickname+'@'+domain)
personUrl=messageJson['actor']
acceptJson=createAccept(baseDir,federationList,ocapGranted, \
nicknameToFollow,domainToFollow,port, \
personUrl,'',httpPrefix,messageJson)
if debug:
pprint(acceptJson)
print('DEBUG: sending follow Accept from '+ \
nicknameToFollow+'@'+domainToFollow+ \
' port '+str(port)+' to '+ \
nickname+'@'+domain+' port '+ str(fromPort))
clientToServer=False
return sendSignedJson(acceptJson,session,baseDir, \
nicknameToFollow,domainToFollow,port, \
nickname,domain,fromPort, '', \
httpPrefix,True,clientToServer, \
federationList, ocapGranted, \
sendThreads,postLog,cachedWebfingers, \
personCache,debug)
def sendFollowRequest(session,baseDir: str, \
nickname: str,domain: str,port: int,httpPrefix: str, \
followNickname: str,followDomain: str, \
followPort: bool,followHttpPrefix: str, \
clientToServer: bool,federationList: [],ocapGranted: {}, \
sendThreads: [],postLog: [],cachedWebfingers: {}, \
personCache: {},debug : bool) -> {}:
"""Gets the json object for sending a follow request
"""
if not domainPermitted(followDomain,federationList):
return None
fullDomain=domain
followActor=httpPrefix+'://'+domain+'/users/'+nickname
if port!=80 and port!=443:
fullDomain=domain+':'+str(port)
followActor=httpPrefix+'://'+domain+':'+str(port)+'/users/'+nickname
requestDomain=followDomain
if followPort!=80 and followPort!=443:
requestDomain=followDomain+':'+str(followPort)
# check that we are capable
if ocapGranted:
if not isCapable(followActor,ocapGranted,'inbox:write'):
return None
statusNumber,published = getStatusNumber()
followedId=followHttpPrefix+'://'+requestDomain+'/users/'+followNickname
newFollowJson = {
'id': httpPrefix+'://'+fullDomain+'/users/'+nickname+'/statuses/'+statusNumber,
'type': 'Follow',
'actor': followActor,
'object': followedId,
'to': [followedId],
'cc': ['https://www.w3.org/ns/activitystreams#Public'],
'published': published
}
sendSignedJson(newFollowJson,session,baseDir,nickname,domain,port, \
followNickname,followDomain,followPort, \
'https://www.w3.org/ns/activitystreams#Public', \
httpPrefix,True,clientToServer, \
federationList, ocapGranted, \
sendThreads,postLog,cachedWebfingers,personCache, debug)
return newFollowJson
def getFollowersOfActor(baseDir :str,actor :str,recipientsDict: {}) -> {}:
"""In a shared inbox if we receive a post we know who it's from
and if it's addressed to followers then we need to get a list of those.
This returns a list of account handles which follow the given actor
and also the corresponding capability id if it exists
"""
if ':' not in actor:
return recipientsDict
httpPrefix=actor.split(':')[0]
nickname=getNicknameFromActor(actor)
if not nickname:
return recipientsDict
domain,port=getDomainFromActor(actor)
if not domain:
return recipientsDict
actorHandle=nickname+'@'+domain
# for each of the accounts
for subdir, dirs, files in os.walk(baseDir+'/accounts'):
for account in dirs:
if '@' in account and not account.startswith('inbox@'):
followingFilename = os.path.join(subdir, account)+'/following.txt'
if os.path.isfile(followingFilename):
# does this account follow the given actor?
if actorHandle in open(followingFilename).read():
ocapFilename=baseDir+'/accounts/'+account+'/ocap/accept/'+httpPrefix+':##'+domain+':'+str(port)+'#users#'+nickname+'.json'
if os.path.isfile(ocapFilename):
with open(ocapFilename, 'r') as fp:
ocapJson=commentjson.load(fp)
if ocapJson.get('id'):
recipientsDict[account]=ocapJson['id']
else:
recipientsDict[account]=None
else:
recipientsDict[account]=None
return recipientsDict