epicyon/like.py

623 lines
22 KiB
Python

__filename__ = "like.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "1.0.0"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"
import os
import json
import time
from pprint import pprint
from utils import removePostFromCache
from utils import urlPermitted
from utils import getNicknameFromActor
from utils import getDomainFromActor
from utils import locatePost
from utils import getCachedPostFilename
from utils import loadJson
from utils import saveJson
from posts import sendSignedJson
from session import postJson
from webfinger import webfingerHandle
from auth import createBasicAuthHeader
from posts import getPersonBox
def undoLikesCollectionEntry(baseDir: str,postFilename: str,objectUrl: str, \
actor: str,domain: str,debug: bool) -> None:
"""Undoes a like for a particular actor
"""
postJsonObject=loadJson(postFilename)
if postJsonObject:
# remove any cached version of this post so that the like icon is changed
nickname=getNicknameFromActor(actor)
cachedPostFilename= \
getCachedPostFilename(baseDir,nickname,domain,postJsonObject)
if os.path.isfile(cachedPostFilename):
os.remove(cachedPostFilename)
removePostFromCache(postJsonObject,recentPostsCache)
if not postJsonObject.get('type'):
return
if postJsonObject['type']!='Create':
return
if not postJsonObject.get('object'):
if debug:
pprint(postJsonObject)
print('DEBUG: post '+objectUrl+' has no object')
return
if not isinstance(postJsonObject['object'], dict):
return
if not postJsonObject['object'].get('likes'):
return
if not isinstance(postJsonObject['object']['likes'], dict):
return
if not postJsonObject['object']['likes'].get('items'):
return
totalItems=0
if postJsonObject['object']['likes'].get('totalItems'):
totalItems=postJsonObject['object']['likes']['totalItems']
itemFound=False
for likeItem in postJsonObject['object']['likes']['items']:
if likeItem.get('actor'):
if likeItem['actor']==actor:
if debug:
print('DEBUG: like was removed for '+actor)
postJsonObject['object']['likes']['items'].remove(likeItem)
itemFound=True
break
if itemFound:
if totalItems==1:
if debug:
print('DEBUG: likes was removed from post')
del postJsonObject['object']['likes']
else:
postJsonObject['object']['likes']['totalItems']= \
len(postJsonObject['likes']['items'])
saveJson(postJsonObject,postFilename)
def likedByPerson(postJsonObject: {}, nickname: str,domain: str) -> bool:
"""Returns True if the given post is liked by the given person
"""
if noOfLikes(postJsonObject)==0:
return False
actorMatch=domain+'/users/'+nickname
for item in postJsonObject['object']['likes']['items']:
if item['actor'].endswith(actorMatch):
return True
return False
def noOfLikes(postJsonObject: {}) -> int:
"""Returns the number of likes ona given post
"""
if not postJsonObject.get('object'):
return 0
if not isinstance(postJsonObject['object'], dict):
return 0
if not postJsonObject['object'].get('likes'):
return 0
if not isinstance(postJsonObject['object']['likes'], dict):
return 0
if not postJsonObject['object']['likes'].get('items'):
postJsonObject['object']['likes']['items']=[]
postJsonObject['object']['likes']['totalItems']=0
return len(postJsonObject['object']['likes']['items'])
def updateLikesCollection(recentPostsCache: {}, \
baseDir: str,postFilename: str, \
objectUrl: str, \
actor: str,domain: str,debug: bool) -> None:
"""Updates the likes collection within a post
"""
postJsonObject=loadJson(postFilename)
if postJsonObject:
# remove any cached version of this post so that the like icon is changed
nickname=getNicknameFromActor(actor)
cachedPostFilename= \
getCachedPostFilename(baseDir,nickname,domain,postJsonObject)
if os.path.isfile(cachedPostFilename):
os.remove(cachedPostFilename)
removePostFromCache(postJsonObject,recentPostsCache)
if not postJsonObject.get('object'):
if debug:
pprint(postJsonObject)
print('DEBUG: post '+objectUrl+' has no object')
return
if not objectUrl.endswith('/likes'):
objectUrl=objectUrl+'/likes'
if not postJsonObject['object'].get('likes'):
if debug:
print('DEBUG: Adding initial likes to '+objectUrl)
likesJson = {
"@context": "https://www.w3.org/ns/activitystreams",
'id': objectUrl,
'type': 'Collection',
"totalItems": 1,
'items': [{
'type': 'Like',
'actor': actor
}]
}
postJsonObject['object']['likes']=likesJson
else:
if not postJsonObject['object']['likes'].get('items'):
postJsonObject['object']['likes']['items']=[]
for likeItem in postJsonObject['object']['likes']['items']:
if likeItem.get('actor'):
if likeItem['actor']==actor:
return
newLike={
'type': 'Like',
'actor': actor
}
postJsonObject['object']['likes']['items'].append(newLike)
postJsonObject['object']['likes']['totalItems']= \
len(postJsonObject['object']['likes']['items'])
if debug:
print('DEBUG: saving post with likes added')
pprint(postJsonObject)
saveJson(postJsonObject,postFilename)
def like(recentPostsCache: {}, \
session,baseDir: str,federationList: [], \
nickname: str,domain: str,port: int, \
ccList: [],httpPrefix: str, \
objectUrl: str,actorLiked: str, \
clientToServer: bool, \
sendThreads: [],postLog: [], \
personCache: {},cachedWebfingers: {}, \
debug: bool,projectVersion: str) -> {}:
"""Creates a like
actor is the person doing the liking
'to' might be a specific person (actor) whose post was liked
object is typically the url of the message which was liked
"""
if not urlPermitted(objectUrl,federationList,"inbox:write"):
return None
fullDomain=domain
if port:
if port!=80 and port!=443:
if ':' not in domain:
fullDomain=domain+':'+str(port)
likeTo=[]
if '/statuses/' in objectUrl:
likeTo=[objectUrl.split('/statuses/')[0]]
newLikeJson = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Like',
'actor': httpPrefix+'://'+fullDomain+'/users/'+nickname,
'object': objectUrl
}
if ccList:
if len(ccList)>0:
newLikeJson['cc']=ccList
# Extract the domain and nickname from a statuses link
likedPostNickname=None
likedPostDomain=None
likedPostPort=None
if actorLiked:
likedPostNickname=getNicknameFromActor(actorLiked)
likedPostDomain,likedPostPort=getDomainFromActor(actorLiked)
else:
if '/users/' in objectUrl or \
'/channel/' in objectUrl or \
'/profile/' in objectUrl:
likedPostNickname=getNicknameFromActor(objectUrl)
likedPostDomain,likedPostPort=getDomainFromActor(objectUrl)
if likedPostNickname:
postFilename=locatePost(baseDir,nickname,domain,objectUrl)
if not postFilename:
print('DEBUG: like baseDir: '+baseDir)
print('DEBUG: like nickname: '+nickname)
print('DEBUG: like domain: '+domain)
print('DEBUG: like objectUrl: '+objectUrl)
return None
updateLikesCollection(recentPostsCache, \
baseDir,postFilename,objectUrl, \
newLikeJson['actor'],domain,debug)
sendSignedJson(newLikeJson,session,baseDir, \
nickname,domain,port, \
likedPostNickname,likedPostDomain,likedPostPort, \
'https://www.w3.org/ns/activitystreams#Public', \
httpPrefix,True,clientToServer,federationList, \
sendThreads,postLog,cachedWebfingers,personCache, \
debug,projectVersion)
return newLikeJson
def likePost(session,baseDir: str,federationList: [], \
nickname: str,domain: str,port: int,httpPrefix: str, \
likeNickname: str,likeDomain: str,likePort: int, \
ccList: [], \
likeStatusNumber: int,clientToServer: bool, \
sendThreads: [],postLog: [], \
personCache: {},cachedWebfingers: {}, \
debug: bool,projectVersion: str) -> {}:
"""Likes a given status post. This is only used by unit tests
"""
likeDomain=likeDomain
if likePort:
if likePort!=80 and likePort!=443:
if ':' not in likeDomain:
likeDomain=likeDomain+':'+str(likePort)
actorLiked= \
httpPrefix + '://'+likeDomain+'/users/'+likeNickname
objectUrl=actorLiked+'/statuses/'+str(likeStatusNumber)
ccUrl=httpPrefix+'://'+likeDomain+'/users/'+likeNickname
if likePort:
if likePort!=80 and likePort!=443:
if ':' not in likeDomain:
ccUrl= \
httpPrefix+'://'+likeDomain+':'+ \
str(likePort)+'/users/'+likeNickname
return like(recentPostsCache, \
session,baseDir,federationList,nickname,domain,port, \
ccList,httpPrefix,objectUrl,actorLiked,clientToServer, \
sendThreads,postLog,personCache,cachedWebfingers, \
debug,projectVersion)
def undolike(recentPostsCache: {}, \
session,baseDir: str,federationList: [], \
nickname: str,domain: str,port: int, \
ccList: [],httpPrefix: str, \
objectUrl: str,actorLiked: str, \
clientToServer: bool, \
sendThreads: [],postLog: [], \
personCache: {},cachedWebfingers: {}, \
debug: bool,projectVersion: str) -> {}:
"""Removes a like
actor is the person doing the liking
'to' might be a specific person (actor) whose post was liked
object is typically the url of the message which was liked
"""
if not urlPermitted(objectUrl,federationList,"inbox:write"):
return None
fullDomain=domain
if port:
if port!=80 and port!=443:
if ':' not in domain:
fullDomain=domain+':'+str(port)
likeTo=[]
if '/statuses/' in objectUrl:
likeTo=[objectUrl.split('/statuses/')[0]]
newUndoLikeJson = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Undo',
'actor': httpPrefix+'://'+fullDomain+'/users/'+nickname,
'object': {
'type': 'Like',
'actor': httpPrefix+'://'+fullDomain+'/users/'+nickname,
'object': objectUrl
}
}
if ccList:
if len(ccList)>0:
newUndoLikeJson['cc']=ccList
newUndoLikeJson['object']['cc']=ccList
# Extract the domain and nickname from a statuses link
likedPostNickname=None
likedPostDomain=None
likedPostPort=None
if actorLiked:
likedPostNickname=getNicknameFromActor(actorLiked)
likedPostDomain,likedPostPort=getDomainFromActor(actorLiked)
else:
if '/users/' in objectUrl or \
'/channel/' in objectUrl or \
'/profile/' in objectUrl:
likedPostNickname=getNicknameFromActor(objectUrl)
likedPostDomain,likedPostPort=getDomainFromActor(objectUrl)
if likedPostNickname:
postFilename=locatePost(baseDir,nickname,domain,objectUrl)
if not postFilename:
return None
undoLikesCollectionEntry(baseDir,postFilename,objectUrl, \
newLikeJson['actor'],domain,debug)
sendSignedJson(newUndoLikeJson,session,baseDir, \
nickname,domain,port, \
likedPostNickname,likedPostDomain,likedPostPort, \
'https://www.w3.org/ns/activitystreams#Public', \
httpPrefix,True,clientToServer,federationList, \
sendThreads,postLog,cachedWebfingers,personCache, \
debug,projectVersion)
else:
return None
return newUndoLikeJson
def undoLikePost(recentPostsCache: {}, \
session,baseDir: str,federationList: [], \
nickname: str,domain: str,port: int,httpPrefix: str, \
likeNickname: str,likeDomain: str,likePort: int, \
ccList: [], \
likeStatusNumber: int,clientToServer: bool, \
sendThreads: [],postLog: [], \
personCache: {},cachedWebfingers: {}, \
debug: bool) -> {}:
"""Removes a liked post
"""
likeDomain=likeDomain
if likePort:
if likePort!=80 and likePort!=443:
if ':' not in likeDomain:
likeDomain=likeDomain+':'+str(likePort)
objectUrl = \
httpPrefix + '://'+likeDomain+'/users/'+likeNickname+ \
'/statuses/'+str(likeStatusNumber)
ccUrl=httpPrefix+'://'+likeDomain+'/users/'+likeNickname
if likePort:
if likePort!=80 and likePort!=443:
if ':' not in likeDomain:
ccUrl= \
httpPrefix+'://'+likeDomain+':'+ \
str(likePort)+'/users/'+likeNickname
return undoLike(recentPostsCache, \
session,baseDir,federationList,nickname,domain,port, \
ccList,httpPrefix,objectUrl,clientToServer, \
sendThreads,postLog,personCache,cachedWebfingers,debug)
def sendLikeViaServer(baseDir: str,session, \
fromNickname: str,password: str,
fromDomain: str,fromPort: int, \
httpPrefix: str,likeUrl: str, \
cachedWebfingers: {},personCache: {}, \
debug: bool,projectVersion: str) -> {}:
"""Creates a like via c2s
"""
if not session:
print('WARN: No session for sendLikeViaServer')
return 6
fromDomainFull=fromDomain
if fromPort:
if fromPort!=80 and fromPort!=443:
if ':' not in fromDomain:
fromDomainFull=fromDomain+':'+str(fromPort)
toUrl=['https://www.w3.org/ns/activitystreams#Public']
ccUrl=httpPrefix+'://'+fromDomainFull+'/users/'+fromNickname+'/followers'
if '/statuses/' in likeUrl:
toUrl=[likeUrl.split('/statuses/')[0]]
newLikeJson = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Like',
'actor': httpPrefix+'://'+fromDomainFull+'/users/'+fromNickname,
'object': likeUrl
}
handle=httpPrefix+'://'+fromDomainFull+'/@'+fromNickname
# lookup the inbox for the To handle
wfRequest=webfingerHandle(session,handle,httpPrefix,cachedWebfingers, \
fromDomain,projectVersion)
if not wfRequest:
if debug:
print('DEBUG: announce webfinger failed for '+handle)
return 1
postToBox='outbox'
# get the actor inbox for the To handle
inboxUrl,pubKeyId,pubKey,fromPersonId,sharedInbox,capabilityAcquisition,avatarUrl,displayName = \
getPersonBox(baseDir,session,wfRequest,personCache, \
projectVersion,httpPrefix,fromNickname, \
fromDomain,postToBox)
if not inboxUrl:
if debug:
print('DEBUG: No '+postToBox+' was found for '+handle)
return 3
if not fromPersonId:
if debug:
print('DEBUG: No actor was found for '+handle)
return 4
authHeader=createBasicAuthHeader(fromNickname,password)
headers = {'host': fromDomain, \
'Content-type': 'application/json', \
'Authorization': authHeader}
postResult = \
postJson(session,newLikeJson,[],inboxUrl,headers,"inbox:write")
#if not postResult:
# if debug:
# print('DEBUG: POST announce failed for c2s to '+inboxUrl)
# return 5
if debug:
print('DEBUG: c2s POST like success')
return newLikeJson
def sendUndoLikeViaServer(baseDir: str,session, \
fromNickname: str,password: str, \
fromDomain: str,fromPort: int, \
httpPrefix: str,likeUrl: str, \
cachedWebfingers: {},personCache: {}, \
debug: bool,projectVersion: str) -> {}:
"""Undo a like via c2s
"""
if not session:
print('WARN: No session for sendUndoLikeViaServer')
return 6
fromDomainFull=fromDomain
if fromPort:
if fromPort!=80 and fromPort!=443:
if ':' not in fromDomain:
fromDomainFull=fromDomain+':'+str(fromPort)
toUrl=['https://www.w3.org/ns/activitystreams#Public']
ccUrl=httpPrefix+'://'+fromDomainFull+'/users/'+fromNickname+'/followers'
if '/statuses/' in likeUrl:
toUrl=[likeUrl.split('/statuses/')[0]]
newUndoLikeJson = {
"@context": "https://www.w3.org/ns/activitystreams",
'type': 'Undo',
'actor': httpPrefix+'://'+fromDomainFull+'/users/'+fromNickname,
'object': {
'type': 'Like',
'actor': httpPrefix+'://'+fromDomainFull+'/users/'+fromNickname,
'object': likeUrl
}
}
handle=httpPrefix+'://'+fromDomainFull+'/@'+fromNickname
# lookup the inbox for the To handle
wfRequest = webfingerHandle(session,handle,httpPrefix,cachedWebfingers, \
fromDomain,projectVersion)
if not wfRequest:
if debug:
print('DEBUG: announce webfinger failed for '+handle)
return 1
postToBox='outbox'
# get the actor inbox for the To handle
inboxUrl,pubKeyId,pubKey,fromPersonId,sharedInbox,capabilityAcquisition,avatarUrl,displayName = \
getPersonBox(baseDir,session,wfRequest,personCache, \
projectVersion,httpPrefix,fromNickname, \
fromDomain,postToBox)
if not inboxUrl:
if debug:
print('DEBUG: No '+postToBox+' was found for '+handle)
return 3
if not fromPersonId:
if debug:
print('DEBUG: No actor was found for '+handle)
return 4
authHeader=createBasicAuthHeader(fromNickname,password)
headers = {'host': fromDomain, \
'Content-type': 'application/json', \
'Authorization': authHeader}
postResult = \
postJson(session,newUndoLikeJson,[],inboxUrl,headers,"inbox:write")
#if not postResult:
# if debug:
# print('DEBUG: POST announce failed for c2s to '+inboxUrl)
# return 5
if debug:
print('DEBUG: c2s POST undo like success')
return newUndoLikeJson
def outboxLike(recentPostsCache: {}, \
baseDir: str,httpPrefix: str, \
nickname: str,domain: str,port: int, \
messageJson: {},debug: bool) -> None:
""" When a like request is received by the outbox from c2s
"""
if not messageJson.get('type'):
if debug:
print('DEBUG: like - no type')
return
if not messageJson['type']=='Like':
if debug:
print('DEBUG: not a like')
return
if not messageJson.get('object'):
if debug:
print('DEBUG: no object in like')
return
if not isinstance(messageJson['object'], str):
if debug:
print('DEBUG: like object is not string')
return
if debug:
print('DEBUG: c2s like request arrived in outbox')
messageId=messageJson['object'].replace('/activity','')
if ':' in domain:
domain=domain.split(':')[0]
postFilename=locatePost(baseDir,nickname,domain,messageId)
if not postFilename:
if debug:
print('DEBUG: c2s like post not found in inbox or outbox')
print(messageId)
return True
updateLikesCollection(recentPostsCache, \
baseDir,postFilename,messageId, \
messageJson['actor'],domain,debug)
if debug:
print('DEBUG: post liked via c2s - '+postFilename)
def outboxUndoLike(baseDir: str,httpPrefix: str, \
nickname: str,domain: str,port: int, \
messageJson: {},debug: bool) -> None:
""" When an undo like request is received by the outbox from c2s
"""
if not messageJson.get('type'):
return
if not messageJson['type']=='Undo':
return
if not messageJson.get('object'):
return
if not isinstance(messageJson['object'], dict):
if debug:
print('DEBUG: undo like object is not dict')
return
if not messageJson['object'].get('type'):
if debug:
print('DEBUG: undo like - no type')
return
if not messageJson['object']['type']=='Like':
if debug:
print('DEBUG: not a undo like')
return
if not messageJson['object'].get('object'):
if debug:
print('DEBUG: no object in undo like')
return
if not isinstance(messageJson['object']['object'], str):
if debug:
print('DEBUG: undo like object is not string')
return
if debug:
print('DEBUG: c2s undo like request arrived in outbox')
messageId=messageJson['object']['object'].replace('/activity','')
if ':' in domain:
domain=domain.split(':')[0]
postFilename=locatePost(baseDir,nickname,domain,messageId)
if not postFilename:
if debug:
print('DEBUG: c2s undo like post not found in inbox or outbox')
print(messageId)
return True
undoLikesCollectionEntry(baseDir,postFilename,messageId, \
messageJson['actor'],domain,debug)
if debug:
print('DEBUG: post undo liked via c2s - '+postFilename)