epicyon/roles.py

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__filename__ = "roles.py"
__author__ = "Bob Mottram"
__license__ = "AGPL3+"
__version__ = "0.0.1"
__maintainer__ = "Bob Mottram"
__email__ = "bob@freedombone.net"
__status__ = "Production"
import json
import commentjson
import os
from webfinger import webfingerHandle
from auth import createBasicAuthHeader
from posts import getPersonBox
from session import postJson
from utils import getNicknameFromActor
from utils import getDomainFromActor
def setRole(baseDir: str,nickname: str,domain: str, \
project: str,role: str) -> bool:
"""Set a person's role within a project
Setting the role to an empty string or None will remove it
"""
# avoid giant strings
if len(role)>128 or len(project)>128:
return False
actorFilename=baseDir+'/accounts/'+nickname+'@'+domain+'.json'
if not os.path.isfile(actorFilename):
return False
with open(actorFilename, 'r') as fp:
actorJson=commentjson.load(fp)
if role:
if actorJson['roles'].get(project):
if role not in actorJson['roles'][project]:
actorJson['roles'][project].append(role)
else:
actorJson['roles'][project]=[role]
else:
if actorJson['roles'].get(project):
actorJson['roles'][project].remove(role)
# if the project contains no roles then remove it
if len(actorJson['roles'][project])==0:
del actorJson['roles'][project]
with open(actorFilename, 'w') as fp:
commentjson.dump(actorJson, fp, indent=4, sort_keys=False)
return True
def getRoles(baseDir: str,nickname: str,domain: str, \
project: str) -> []:
"""Returns the roles for a given person on a given project
"""
actorFilename=baseDir+'/accounts/'+nickname+'@'+domain+'.json'
if not os.path.isfile(actorFilename):
return False
with open(actorFilename, 'r') as fp:
actorJson=commentjson.load(fp)
if not actorJson.get('roles'):
return None
if not actorJson['roles'].get(project):
return None
return actorJson['roles'][project]
return None
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def outboxDelegate(baseDir: str,messageJson: {},debug: bool) -> bool:
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"""Handles receiving a delegation request
"""
if not messageJson.get('type'):
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return False
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if not messageJson['type']=='Delegate':
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return False
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if not messageJson.get('object'):
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return False
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if not isinstance(messageJson['object'], dict):
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return False
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if not messageJson['object'].get('type'):
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return False
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if not messageJson['object']['type']=='Role':
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return False
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if not messageJson['object'].get('object'):
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return False
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if not messageJson['object'].get('actor'):
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return False
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if not isinstance(messageJson['object']['object'], str):
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return False
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if ';' not in messageJson['object']['object']:
print('WARN: No ; separator between project and role')
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return False
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delegatorNickname=getNicknameFromActor(messageJson['actor'])
domain,port=getDomainFromActor(messageJson['actor'])
project=messageJson['object']['object'].split(';')[0].strip()
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# instance delegators can delagate to other projects
# than their own
canDelegate=False
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delegatorRoles=getRoles(baseDir,delegatorNickname, \
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domain,'instance')
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if delegatorRoles:
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if 'delegator' in delegatorRoles:
canDelegate=True
if canDelegate==False:
canDelegate=True
# non-instance delegators can only delegate within their project
delegatorRoles=getRoles(baseDir,delegatorNickname, \
domain,project)
if delegatorRoles:
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if 'delegator' not in delegatorRoles:
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return False
else:
return False
if canDelegate==False:
return False
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nickname=getNicknameFromActor(messageJson['object']['actor'])
domainFull=domain
if port:
if port!=80 and port!=443:
domainFull=domain+':'+str(port)
role=messageJson['object']['object'].split(';')[1].strip().lower()
# what roles is this person already assigned to?
existingRoles=getRoles(baseDir,nickname,domain,project)
if existingRoles:
if role in existingRoles:
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if debug:
print(nickname+'@'+domain+' is already assigned to the role '+role+' within the project '+project)
return False
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setRole(baseDir,nickname,domain,project,role)
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if debug:
print(nickname+'@'+domain+' assigned to the role '+role+' within the project '+project)
return True
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def sendRoleViaServer(session,delegatorNickname: str,password: str,
delegatorDomain: str,delegatorPort: int, \
httpPrefix: str,nickname: str, \
project: str,role: str, \
cachedWebfingers: {},personCache: {}, \
debug: bool) -> {}:
"""A delegator creates a role for a person via c2s
"""
if not session:
print('WARN: No session for sendRoleViaServer')
return 6
delegatorDomainFull=delegatorDomain
if fromPort!=80 and fromPort!=443:
delegatorDomainFull=delegatorDomain+':'+str(fromPort)
toUrl = httpPrefix+'://'+delegatorDomainFull+'/users/'+nickname
ccUrl = httpPrefix+'://'+delegatorDomainFull+'/users/'+delegatorNickname+'/followers'
newRoleJson = {
'type': 'Delegate',
'actor': httpPrefix+'://'+delegatorDomainFull+'/users/'+delegatorNickname,
'object': {
'type': 'Role',
'actor': httpPrefix+'://'+delegatorDomainFull+'/users/'+nickname,
'object': project.lower()+';'+role.lower(),
'to': [toUrl],
'cc': [ccUrl]
},
'to': [toUrl],
'cc': [ccUrl]
}
handle=httpPrefix+'://'+delegatorDomainFull+'/@'+delegatorNickname
# lookup the inbox for the To handle
wfRequest = webfingerHandle(session,handle,httpPrefix,cachedWebfingers)
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 = \
getPersonBox(session,wfRequest,personCache,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(delegatorNickname,password)
headers = {'host': delegatorDomain, \
'Content-type': 'application/json', \
'Authorization': authHeader}
postResult = \
postJson(session,newRoleJson,[],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 role success')
return newRoleJson