mirror of https://gitlab.com/bashrc2/epicyon
501 lines
19 KiB
Python
501 lines
19 KiB
Python
__filename__ = "inbox.py"
|
|
__author__ = "Bob Mottram"
|
|
__license__ = "AGPL3+"
|
|
__version__ = "0.0.1"
|
|
__maintainer__ = "Bob Mottram"
|
|
__email__ = "bob@freedombone.net"
|
|
__status__ = "Production"
|
|
|
|
import json
|
|
import os
|
|
import datetime
|
|
import time
|
|
import json
|
|
import commentjson
|
|
from shutil import copyfile
|
|
from utils import urlPermitted
|
|
from utils import createInboxQueueDir
|
|
from utils import getStatusNumber
|
|
from httpsig import verifyPostHeaders
|
|
from session import createSession
|
|
from session import getJson
|
|
from follow import receiveFollowRequest
|
|
from follow import getFollowersOfActor
|
|
from pprint import pprint
|
|
from cache import getPersonFromCache
|
|
from cache import storePersonInCache
|
|
from acceptreject import receiveAcceptReject
|
|
from capabilities import getOcapFilename
|
|
from capabilities import CapablePost
|
|
|
|
def getPersonPubKey(session,personUrl: str,personCache: {},debug: bool) -> str:
|
|
if not personUrl:
|
|
return None
|
|
personUrl=personUrl.replace('#main-key','')
|
|
personJson = getPersonFromCache(personUrl,personCache)
|
|
if not personJson:
|
|
if debug:
|
|
print('DEBUG: Obtaining public key for '+personUrl)
|
|
asHeader = {'Accept': 'application/ld+json; profile="https://www.w3.org/ns/activitystreams"'}
|
|
personJson = getJson(session,personUrl,asHeader,None)
|
|
if not personJson:
|
|
return None
|
|
pubKey=None
|
|
if personJson.get('publicKey'):
|
|
if personJson['publicKey'].get('publicKeyPem'):
|
|
pubKey=personJson['publicKey']['publicKeyPem']
|
|
else:
|
|
if personJson.get('publicKeyPem'):
|
|
pubKey=personJson['publicKeyPem']
|
|
|
|
if not pubKey:
|
|
if debug:
|
|
print('DEBUG: Public key not found for '+personUrl)
|
|
|
|
storePersonInCache(personUrl,personJson,personCache)
|
|
return pubKey
|
|
|
|
def inboxMessageHasParams(messageJson: {}) -> bool:
|
|
"""Checks whether an incoming message contains expected parameters
|
|
"""
|
|
expectedParams=['type','actor','object']
|
|
for param in expectedParams:
|
|
if not messageJson.get(param):
|
|
return False
|
|
if not messageJson.get('to'):
|
|
allowedWithoutToParam=['Follow','Request','Capability']
|
|
if messageJson['type'] not in allowedWithoutToParam:
|
|
return False
|
|
return True
|
|
|
|
def inboxPermittedMessage(domain: str,messageJson: {},federationList: [],ocapGranted: {}) -> bool:
|
|
""" check that we are receiving from a permitted domain
|
|
"""
|
|
testParam='actor'
|
|
if not messageJson.get(testParam):
|
|
return False
|
|
actor=messageJson[testParam]
|
|
# always allow the local domain
|
|
if domain in actor:
|
|
return True
|
|
|
|
if not urlPermitted(actor,federationList,ocapGranted,"inbox:write"):
|
|
return False
|
|
|
|
if messageJson['type']!='Follow':
|
|
if messageJson.get('object'):
|
|
if messageJson['object'].get('inReplyTo'):
|
|
inReplyTo=messageJson['object']['inReplyTo']
|
|
if not urlPermitted(inReplyTo,federationList,ocapGranted):
|
|
return False
|
|
|
|
return True
|
|
|
|
def validPublishedDate(published) -> bool:
|
|
currTime=datetime.datetime.utcnow()
|
|
pubDate=datetime.datetime.strptime(published,"%Y-%m-%dT%H:%M:%SZ")
|
|
daysSincePublished = (currTime - pubTime).days
|
|
if daysSincePublished>30:
|
|
return False
|
|
return True
|
|
|
|
def savePostToInboxQueue(baseDir: str,httpPrefix: str,nickname: str, domain: str,postJson: {},host: str,headers: str,postPath: str,debug: bool) -> str:
|
|
"""Saves the give json to the inbox queue for the person
|
|
keyId specifies the actor sending the post
|
|
"""
|
|
if ':' in domain:
|
|
domain=domain.split(':')[0]
|
|
if postJson.get('id'):
|
|
postId=postJson['id'].replace('/activity','')
|
|
else:
|
|
statusNumber,published = getStatusNumber()
|
|
postId=httpPrefix+'://'+domain+'/users/'+nickname+'/statuses/'+statusNumber
|
|
|
|
currTime=datetime.datetime.utcnow()
|
|
published=currTime.strftime("%Y-%m-%dT%H:%M:%SZ")
|
|
|
|
inboxQueueDir=createInboxQueueDir(nickname,domain,baseDir)
|
|
|
|
handle=nickname+'@'+domain
|
|
destination=baseDir+'/accounts/'+handle+'/inbox/'+postId.replace('/','#')+'.json'
|
|
if os.path.isfile(destination):
|
|
if debug:
|
|
print('DEBUG: inbox item already exists')
|
|
return None
|
|
filename=inboxQueueDir+'/'+postId.replace('/','#')+'.json'
|
|
|
|
sharedInboxItem=False
|
|
if nickname=='inbox':
|
|
sharedInboxItem=True
|
|
|
|
newQueueItem = {
|
|
'nickname': nickname,
|
|
'domain': domain,
|
|
'sharedInbox': sharedInboxItem,
|
|
'published': published,
|
|
'host': host,
|
|
'headers': headers,
|
|
'path': postPath,
|
|
'post': postJson,
|
|
'filename': filename,
|
|
'destination': destination
|
|
}
|
|
|
|
if debug:
|
|
print('Inbox queue item created')
|
|
pprint(newQueueItem)
|
|
|
|
with open(filename, 'w') as fp:
|
|
commentjson.dump(newQueueItem, fp, indent=4, sort_keys=False)
|
|
return filename
|
|
|
|
def inboxCheckCapabilities(baseDir :str,nickname :str,domain :str, \
|
|
actor: str,queue: [],queueJson: {}, \
|
|
capabilityId: str,debug : bool) -> bool:
|
|
if nickname=='inbox':
|
|
return True
|
|
|
|
ocapFilename= \
|
|
getOcapFilename(baseDir, \
|
|
queueJson['nickname'],queueJson['domain'], \
|
|
actor,'accept')
|
|
if not os.path.isfile(ocapFilename):
|
|
if debug:
|
|
print('DEBUG: capabilities for '+ \
|
|
actor+' do not exist')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
return False
|
|
|
|
with open(ocapFilename, 'r') as fp:
|
|
oc=commentjson.load(fp)
|
|
|
|
if not oc.get('id'):
|
|
if debug:
|
|
print('DEBUG: capabilities for '+actor+' do not contain an id')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
return False
|
|
|
|
if oc['id']!=capabilityId:
|
|
if debug:
|
|
print('DEBUG: capability id mismatch')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
return False
|
|
|
|
if not oc.get('capability'):
|
|
if debug:
|
|
print('DEBUG: missing capability list')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
return False
|
|
|
|
if not CapablePost(queueJson['post'],oc['capability'],debug):
|
|
if debug:
|
|
print('DEBUG: insufficient capabilities to write to inbox from '+actor)
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
return False
|
|
|
|
if debug:
|
|
print('DEBUG: object capabilities check success')
|
|
return True
|
|
|
|
def inboxPostRecipientsAdd(baseDir :str,httpPrefix :str,toList :[], \
|
|
recipientsDict :{}, \
|
|
domainMatch: str,domain :str, \
|
|
actor :str) -> bool:
|
|
"""Given a list of post recipients (toList) from 'to' or 'cc' parameters
|
|
populate a recipientsDict with the handle and capabilities id for each
|
|
"""
|
|
followerRecipients=False
|
|
for recipient in toList:
|
|
# is this a to a local account?
|
|
if domainMatch in recipient:
|
|
# get the handle for the local account
|
|
nickname=recipient.split(domainMatch)[1]
|
|
handle=nickname+'@'+domain
|
|
if os.path.isdir(baseDir+'/accounts/'+handle):
|
|
# are capabilities granted for this account to the
|
|
# sender (actor) of the post?
|
|
ocapFilename=baseDir+'/accounts/'+handle+'/ocap/accept/'+actor.replace('/','#')+'.json'
|
|
if os.path.isfile(ocapFilename):
|
|
# read the granted capabilities and obtain the id
|
|
with open(ocapFilename, 'r') as fp:
|
|
ocapJson=commentjson.load(fp)
|
|
if ocapJson.get('id'):
|
|
# append with the capabilities id
|
|
recipientsDict[handle]=ocapJson['id']
|
|
else:
|
|
recipientsDict[handle]=None
|
|
else:
|
|
recipientsDict[handle]=None
|
|
if recipient.endswith('followers'):
|
|
followerRecipients=True
|
|
return followerRecipients,recipientsDict
|
|
|
|
def inboxPostRecipients(baseDir :str,postJsonObject :{},httpPrefix :str,domain : str,port :int) -> []:
|
|
recipientsDict={}
|
|
|
|
if not postJsonObject.get('actor'):
|
|
return recipientsDict
|
|
|
|
if ':' in domain:
|
|
domain=domain.split(':')[0]
|
|
domainBase=domain
|
|
if port!=80 and port!=443:
|
|
domain=domain+':'+str(port)
|
|
domainMatch='/'+domain+'/users/'
|
|
|
|
actor = postJsonObject['actor']
|
|
# first get any specific people which the post is addressed to
|
|
|
|
followerRecipients=False
|
|
if postJsonObject.get('object'):
|
|
if isinstance(postJsonObject['object'], dict):
|
|
if postJsonObject['object'].get('to'):
|
|
includesFollowers,recipientsDict= \
|
|
inboxPostRecipientsAdd(baseDir,httpPrefix, \
|
|
postJsonObject['object']['to'], \
|
|
recipientsDict, \
|
|
domainMatch,domainBase,actor)
|
|
if includesFollowers:
|
|
followerRecipients=True
|
|
|
|
if postJsonObject['object'].get('cc'):
|
|
includesFollowers,recipientsDict= \
|
|
inboxPostRecipientsAdd(baseDir,httpPrefix, \
|
|
postJsonObject['object']['cc'], \
|
|
recipientsDict, \
|
|
domainMatch,domainBase,actor)
|
|
if includesFollowers:
|
|
followerRecipients=True
|
|
|
|
if postJsonObject.get('to'):
|
|
includesFollowers,recipientsDict= \
|
|
inboxPostRecipientsAdd(baseDir,httpPrefix, \
|
|
postJsonObject['to'], \
|
|
recipientsDict, \
|
|
domainMatch,domainBase,actor)
|
|
if includesFollowers:
|
|
followerRecipients=True
|
|
|
|
if postJsonObject.get('cc'):
|
|
includesFollowers,recipientsDict= \
|
|
inboxPostRecipientsAdd(baseDir,httpPrefix, \
|
|
postJsonObject['cc'], \
|
|
recipientsDict, \
|
|
domainMatch,domainBase,actor)
|
|
if includesFollowers:
|
|
followerRecipients=True
|
|
|
|
if not followerRecipients:
|
|
return recipientsDict
|
|
|
|
# now resolve the followers
|
|
recipientsDict= \
|
|
getFollowersOfActor(baseDir,actor,recipientsDict)
|
|
|
|
return recipientsDict
|
|
|
|
def runInboxQueue(baseDir: str,httpPrefix: str,sendThreads: [],postLog: [],cachedWebfingers: {},personCache: {},queue: [],domain: str,port: int,useTor: bool,federationList: [],ocapAlways: bool,ocapGranted: {},debug: bool) -> None:
|
|
"""Processes received items and moves them to
|
|
the appropriate directories
|
|
"""
|
|
currSessionTime=int(time.time())
|
|
sessionLastUpdate=currSessionTime
|
|
session=createSession(domain,port,useTor)
|
|
if debug:
|
|
print('DEBUG: Inbox queue running')
|
|
|
|
while True:
|
|
time.sleep(1)
|
|
if len(queue)>0:
|
|
currSessionTime=int(time.time())
|
|
if currSessionTime-sessionLastUpdate>1200:
|
|
session=createSession(domain,port,useTor)
|
|
sessionLastUpdate=currSessionTime
|
|
|
|
# oldest item first
|
|
queue.sort()
|
|
queueFilename=queue[0]
|
|
if not os.path.isfile(queueFilename):
|
|
if debug:
|
|
print("DEBUG: queue item rejected becase it has no file: "+queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
# Load the queue json
|
|
with open(queueFilename, 'r') as fp:
|
|
queueJson=commentjson.load(fp)
|
|
|
|
# Try a few times to obtain the public key
|
|
pubKey=None
|
|
keyId=None
|
|
for tries in range(8):
|
|
keyId=None
|
|
signatureParams=queueJson['headers'].split(',')
|
|
for signatureItem in signatureParams:
|
|
if signatureItem.startswith('keyId='):
|
|
if '"' in signatureItem:
|
|
keyId=signatureItem.split('"')[1]
|
|
break
|
|
if not keyId:
|
|
if debug:
|
|
print('DEBUG: No keyId in signature: '+queueJson['headers']['signature'])
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
pubKey=getPersonPubKey(session,keyId,personCache,debug)
|
|
if pubKey:
|
|
print('DEBUG: public key: '+str(pubKey))
|
|
break
|
|
|
|
if debug:
|
|
print('DEBUG: Retry '+str(tries+1)+' obtaining public key for '+keyId)
|
|
time.sleep(5)
|
|
|
|
if not pubKey:
|
|
if debug:
|
|
print('DEBUG: public key could not be obtained from '+keyId)
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
# check the signature
|
|
verifyHeaders={
|
|
'host': queueJson['host'],
|
|
'signature': queueJson['headers']
|
|
}
|
|
if not verifyPostHeaders(httpPrefix, \
|
|
pubKey, verifyHeaders, \
|
|
queueJson['path'], False, \
|
|
json.dumps(queueJson['post'])):
|
|
if debug:
|
|
print('DEBUG: Header signature check failed')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
if debug:
|
|
print('DEBUG: Signature check success')
|
|
|
|
if receiveFollowRequest(session, \
|
|
baseDir,httpPrefix,port, \
|
|
sendThreads,postLog, \
|
|
cachedWebfingers,
|
|
personCache,
|
|
queueJson['post'], \
|
|
federationList,ocapGranted, \
|
|
debug):
|
|
if debug:
|
|
print('DEBUG: Follow accepted from '+keyId)
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
if receiveAcceptReject(session, \
|
|
baseDir,httpPrefix,domain,port, \
|
|
sendThreads,postLog, \
|
|
cachedWebfingers,
|
|
personCache,
|
|
queueJson['post'], \
|
|
federationList,ocapGranted, \
|
|
debug):
|
|
if debug:
|
|
print('DEBUG: Accept/Reject received from '+keyId)
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
# get recipients list
|
|
recipientsDict=inboxPostRecipients(baseDir,queueJson['post'],httpPrefix,domain,port)
|
|
|
|
print('*************************************')
|
|
print('Resolved recipients list:')
|
|
pprint(recipientsDict)
|
|
print('*************************************')
|
|
|
|
# is this sent to the shared inbox? (actor is the 'inbox' account)
|
|
sentToSharedInbox=False
|
|
if queueJson['post'].get('actor'):
|
|
if queueJson['post']['actor'].endswith('/inbox'):
|
|
sentToSharedInbox=True
|
|
|
|
if sentToSharedInbox:
|
|
# if this is arriving at the shared inbox then
|
|
# don't do the capabilities checks
|
|
capabilitiesPassed=True
|
|
# TODO how to handle capabilities in the shared inbox scenario?
|
|
# should 'capability' be a list instead of a single value?
|
|
else:
|
|
# check that capabilities are accepted
|
|
capabilitiesPassed=False
|
|
if queueJson['post'].get('capability'):
|
|
if not isinstance(queueJson['post']['capability'], list):
|
|
if debug:
|
|
print('DEBUG: capability on post should be a list')
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
capabilityIdList=queueJson['post']['capability']
|
|
|
|
if capabilityIdList:
|
|
capabilitiesPassed= \
|
|
inboxCheckCapabilities(baseDir,queueJson['nickname'], \
|
|
queueJson['domain'], \
|
|
queueJson['post']['actor'], \
|
|
queue,queueJson, \
|
|
capabilityIdList[0],debug)
|
|
|
|
if ocapAlways and not capabilitiesPassed:
|
|
# Allow follow types through
|
|
# i.e. anyone can make a follow request
|
|
if queueJson['post'].get('type'):
|
|
if queueJson['post']['type']=='Follow' or \
|
|
queueJson['post']['type']=='Accept':
|
|
capabilitiesPassed=True
|
|
if not capabilitiesPassed:
|
|
if debug:
|
|
print('DEBUG: object capabilities check failed')
|
|
pprint(queueJson['post'])
|
|
os.remove(queueFilename)
|
|
queue.pop(0)
|
|
continue
|
|
|
|
if debug:
|
|
print('DEBUG: Queue post accepted')
|
|
|
|
if queueJson['sharedInbox']:
|
|
if '/users/' in keyId:
|
|
# Who is this from? Use the actor from the keyId where we obtained the public key
|
|
fromList=keyId.replace('https://','').replace('http://','').replace('dat://','').replace('#main-key','').split('/users/')
|
|
fromNickname=fromList[1]
|
|
fromDomain=fromList[0]
|
|
# get the followers of the sender
|
|
followList=getFollowersOfPerson(baseDir,fromNickname,fromDomain)
|
|
for followerHandle in followList:
|
|
followerDir=baseDir+'/accounts/'+followerHandle
|
|
if os.path.isdir(followerDir):
|
|
if not os.path.isdir(followerDir+'/inbox'):
|
|
os.mkdir(followerDir+'/inbox')
|
|
postId=queueJson['post']['id'].replace('/activity','')
|
|
destination=followerDir+'/inbox/'+postId.replace('/','#')+'.json'
|
|
if os.path.isfile(destination):
|
|
# post already exists in this person's inbox
|
|
continue
|
|
# We could do this in a more storage space efficient way
|
|
# by linking to the inbox of inbox@domain
|
|
# However, this allows for easy deletion by individuals
|
|
# without affecting any other people
|
|
copyfile(queueFilename, destination)
|
|
# copy to followers
|
|
# remove item from shared inbox
|
|
os.remove(queueFilename)
|
|
else:
|
|
# move to the destination inbox
|
|
os.rename(queueFilename,queueJson['destination'])
|
|
queue.pop(0)
|