forked from indymedia/epicyon
358 lines
12 KiB
Python
358 lines
12 KiB
Python
__filename__ = "webfinger.py"
|
||
__author__ = "Bob Mottram"
|
||
__license__ = "AGPL3+"
|
||
__version__ = "1.1.0"
|
||
__maintainer__ = "Bob Mottram"
|
||
__email__ = "bob@freedombone.net"
|
||
__status__ = "Production"
|
||
|
||
import base64
|
||
try:
|
||
from Cryptodome.PublicKey import RSA
|
||
from Cryptodome.Util import number
|
||
except ImportError:
|
||
from Crypto.PublicKey import RSA
|
||
from Crypto.Util import number
|
||
import os
|
||
import urllib.parse
|
||
from session import getJson
|
||
from cache import storeWebfingerInCache
|
||
from cache import getWebfingerFromCache
|
||
from utils import loadJson
|
||
from utils import loadJsonOnionify
|
||
from utils import saveJson
|
||
|
||
|
||
def parseHandle(handle: str) -> (str, str):
|
||
if '.' not in handle:
|
||
return None, None
|
||
handleStr = handle.replace('https://', '').replace('http://', '')
|
||
handleStr = handleStr.replace('dat://', '').replace('i2p://', '')
|
||
if '/@' in handle:
|
||
domain, nickname = handleStr.split('/@')
|
||
else:
|
||
if '/users/' in handle:
|
||
domain, nickname = handleStr.split('/users/')
|
||
else:
|
||
if '@' in handle:
|
||
nickname, domain = handle.split('@')
|
||
else:
|
||
return None, None
|
||
return nickname, domain
|
||
|
||
|
||
def webfingerHandle(session, handle: str, httpPrefix: str,
|
||
cachedWebfingers: {},
|
||
fromDomain: str, projectVersion: str) -> {}:
|
||
"""
|
||
"""
|
||
if not session:
|
||
print('WARN: No session specified for webfingerHandle')
|
||
return None
|
||
|
||
nickname, domain = parseHandle(handle)
|
||
if not nickname:
|
||
return None
|
||
wfDomain = domain
|
||
if ':' in wfDomain:
|
||
# wfPortStr=wfDomain.split(':')[1]
|
||
# if wfPortStr.isdigit():
|
||
# wfPort=int(wfPortStr)
|
||
# if wfPort==80 or wfPort==443:
|
||
wfDomain = wfDomain.split(':')[0]
|
||
wf = getWebfingerFromCache(nickname + '@' + wfDomain,
|
||
cachedWebfingers)
|
||
if wf:
|
||
return wf
|
||
url = '{}://{}/.well-known/webfinger'.format(httpPrefix, domain)
|
||
par = {
|
||
'resource': 'acct:{}'.format(nickname + '@' + wfDomain)
|
||
}
|
||
hdr = {
|
||
'Accept': 'application/jrd+json'
|
||
}
|
||
try:
|
||
result = \
|
||
getJson(session, url, hdr, par, projectVersion,
|
||
httpPrefix, fromDomain)
|
||
except Exception as e:
|
||
print("Unable to webfinger " + url)
|
||
print('nickname: ' + str(nickname))
|
||
print('domain: ' + str(wfDomain))
|
||
print('headers: ' + str(hdr))
|
||
print('params: ' + str(par))
|
||
print(e)
|
||
return None
|
||
|
||
if result:
|
||
storeWebfingerInCache(nickname + '@' + wfDomain,
|
||
result, cachedWebfingers)
|
||
return result
|
||
|
||
|
||
def generateMagicKey(publicKeyPem) -> str:
|
||
"""See magic_key method in
|
||
https://github.com/tootsuite/mastodon/blob/
|
||
707ddf7808f90e3ab042d7642d368c2ce8e95e6f/app/models/account.rb
|
||
"""
|
||
privkey = RSA.importKey(publicKeyPem)
|
||
modBytes = number.long_to_bytes(privkey.n)
|
||
mod = base64.urlsafe_b64encode(modBytes).decode("utf-8")
|
||
expBytes = number.long_to_bytes(privkey.e)
|
||
pubexp = base64.urlsafe_b64encode(expBytes).decode("utf-8")
|
||
return f"data:application/magic-public-key,RSA.{mod}.{pubexp}"
|
||
|
||
|
||
def storeWebfingerEndpoint(nickname: str, domain: str, port: int,
|
||
baseDir: str, wfJson: {}) -> bool:
|
||
"""Stores webfinger endpoint for a user to a file
|
||
"""
|
||
originalDomain = domain
|
||
if port:
|
||
if port != 80 and port != 443:
|
||
if ':' not in domain:
|
||
domain = domain + ':' + str(port)
|
||
handle = nickname + '@' + domain
|
||
wfSubdir = '/wfendpoints'
|
||
if not os.path.isdir(baseDir + wfSubdir):
|
||
os.mkdir(baseDir + wfSubdir)
|
||
filename = baseDir + wfSubdir + '/' + handle.lower() + '.json'
|
||
saveJson(wfJson, filename)
|
||
if nickname == 'inbox':
|
||
handle = originalDomain + '@' + domain
|
||
filename = baseDir + wfSubdir + '/' + handle.lower() + '.json'
|
||
saveJson(wfJson, filename)
|
||
return True
|
||
|
||
|
||
def createWebfingerEndpoint(nickname: str, domain: str, port: int,
|
||
httpPrefix: str, publicKeyPem) -> {}:
|
||
"""Creates a webfinger endpoint for a user
|
||
"""
|
||
originalDomain = domain
|
||
if port:
|
||
if port != 80 and port != 443:
|
||
if ':' not in domain:
|
||
domain = domain + ':' + str(port)
|
||
|
||
personName = nickname
|
||
personId = httpPrefix + "://" + domain + "/users/" + personName
|
||
subjectStr = "acct:" + personName + "@" + originalDomain
|
||
profilePageHref = httpPrefix + "://" + domain + "/@" + nickname
|
||
if nickname == 'inbox' or nickname == originalDomain:
|
||
personName = 'actor'
|
||
personId = httpPrefix + "://" + domain + "/" + personName
|
||
subjectStr = "acct:" + originalDomain + "@" + originalDomain
|
||
profilePageHref = httpPrefix + '://' + domain + \
|
||
'/about/more?instance_actor=true'
|
||
|
||
actor = httpPrefix + "://" + domain + "/users/" + nickname
|
||
account = {
|
||
"aliases": [
|
||
httpPrefix + "://" + domain + "/@" + personName,
|
||
personId
|
||
],
|
||
"links": [
|
||
{
|
||
"href": profilePageHref,
|
||
"rel": "http://webfinger.net/rel/profile-page",
|
||
"type": "text/html"
|
||
},
|
||
{
|
||
"href": actor + ".atom",
|
||
"rel": "http://schemas.google.com/g/2010#updates-from",
|
||
"type": "application/atom+xml"
|
||
},
|
||
{
|
||
"href": personId,
|
||
"rel": "self",
|
||
"type": "application/activity+json"
|
||
},
|
||
{
|
||
"href": generateMagicKey(publicKeyPem),
|
||
"rel": "magic-public-key"
|
||
}
|
||
],
|
||
"subject": subjectStr
|
||
}
|
||
return account
|
||
|
||
|
||
def webfingerNodeInfo(httpPrefix: str, domainFull: str) -> {}:
|
||
""" /.well-known/nodeinfo endpoint
|
||
"""
|
||
nodeinfo = {
|
||
'links': [
|
||
{
|
||
'href': httpPrefix + '://' + domainFull + '/nodeinfo/2.0',
|
||
'rel': 'http://nodeinfo.diaspora.software/ns/schema/2.0'
|
||
}
|
||
]
|
||
}
|
||
return nodeinfo
|
||
|
||
|
||
def webfingerMeta(httpPrefix: str, domainFull: str) -> str:
|
||
"""Return /.well-known/host-meta
|
||
"""
|
||
metaStr = "<?xml version=’1.0' encoding=’UTF-8'?>"
|
||
metaStr += "<XRD xmlns=’http://docs.oasis-open.org/ns/xri/xrd-1.0'"
|
||
metaStr += " xmlns:hm=’http://host-meta.net/xrd/1.0'>"
|
||
metaStr += ""
|
||
metaStr += "<hm:Host>" + domainFull + "</hm:Host>"
|
||
metaStr += ""
|
||
metaStr += "<Link rel=’lrdd’"
|
||
metaStr += " template=’" + httpPrefix + "://" + domainFull + \
|
||
"/describe?uri={uri}'>"
|
||
metaStr += " <Title>Resource Descriptor</Title>"
|
||
metaStr += " </Link>"
|
||
metaStr += "</XRD>"
|
||
return metaStr
|
||
|
||
|
||
def webfingerLookup(path: str, baseDir: str,
|
||
domain: str, onionDomain: str,
|
||
port: int, debug: bool) -> {}:
|
||
"""Lookup the webfinger endpoint for an account
|
||
"""
|
||
if not path.startswith('/.well-known/webfinger?'):
|
||
return None
|
||
handle = None
|
||
if 'resource=acct:' in path:
|
||
handle = path.split('resource=acct:')[1].strip()
|
||
if debug:
|
||
print('DEBUG: WEBFINGER handle ' + handle)
|
||
else:
|
||
if 'resource=acct%3A' in path:
|
||
handle = path.split('resource=acct%3A')[1]
|
||
handle = urllib.parse.unquote(handle.strip())
|
||
if debug:
|
||
print('DEBUG: WEBFINGER handle ' + handle)
|
||
if not handle:
|
||
if debug:
|
||
print('DEBUG: WEBFINGER handle missing')
|
||
return None
|
||
if '&' in handle:
|
||
handle = handle.split('&')[0].strip()
|
||
if debug:
|
||
print('DEBUG: WEBFINGER handle with & removed ' + handle)
|
||
if '@' not in handle:
|
||
if debug:
|
||
print('DEBUG: WEBFINGER no @ in handle ' + handle)
|
||
return None
|
||
if port:
|
||
if port != 80 and port != 443:
|
||
if ':' not in handle:
|
||
handle = handle + ':' + str(port)
|
||
# convert @domain@domain to inbox@domain
|
||
if '@' in handle:
|
||
handleDomain = handle.split('@')[1]
|
||
if handle.startswith(handleDomain + '@'):
|
||
handle = 'inbox@' + handleDomain
|
||
# if this is a lookup for a handle using its onion domain
|
||
# then swap the onion domain for the clearnet version
|
||
onionify = False
|
||
if onionDomain:
|
||
if onionDomain in handle:
|
||
handle = handle.replace(onionDomain, domain)
|
||
onionify = True
|
||
filename = baseDir + '/wfendpoints/' + handle.lower() + '.json'
|
||
if debug:
|
||
print('DEBUG: WEBFINGER filename ' + filename)
|
||
if not os.path.isfile(filename):
|
||
if debug:
|
||
print('DEBUG: WEBFINGER filename not found ' + filename)
|
||
return None
|
||
if not onionify:
|
||
wfJson = loadJson(filename)
|
||
else:
|
||
print('Webfinger request for onionified ' + handle)
|
||
wfJson = loadJsonOnionify(filename, domain, onionDomain)
|
||
if not wfJson:
|
||
wfJson = {"nickname": "unknown"}
|
||
return wfJson
|
||
|
||
|
||
def webfingerUpdateFromProfile(wfJson: {}, actorJson: {}) -> bool:
|
||
"""Updates webfinger Email/blog/xmpp links from profile
|
||
Returns true if one or more tags has been changed
|
||
"""
|
||
if not actorJson.get('attachment'):
|
||
return False
|
||
|
||
changed = False
|
||
|
||
webfingerPropertyName = {
|
||
"xmpp": "xmpp",
|
||
"matrix": "matrix",
|
||
"email": "mailto",
|
||
"ssb": "ssb",
|
||
"tox": "toxId"
|
||
}
|
||
|
||
for propertyValue in actorJson['attachment']:
|
||
if not propertyValue.get('name'):
|
||
continue
|
||
propertyName = propertyValue['name'].lower()
|
||
if not (propertyName.startswith('ssb') or
|
||
propertyName.startswith('xmpp') or
|
||
propertyName.startswith('matrix') or
|
||
propertyName.startswith('email') or
|
||
propertyName.startswith('tox')):
|
||
continue
|
||
if not propertyValue.get('type'):
|
||
continue
|
||
if not propertyValue.get('value'):
|
||
continue
|
||
if propertyValue['type'] != 'PropertyValue':
|
||
continue
|
||
|
||
newValue = propertyValue['value'].strip()
|
||
aliasIndex = 0
|
||
found = False
|
||
for alias in wfJson['aliases']:
|
||
if alias.startswith(webfingerPropertyName[propertyName] + ':'):
|
||
found = True
|
||
break
|
||
aliasIndex += 1
|
||
newAlias = webfingerPropertyName[propertyName] + ':' + newValue
|
||
if found:
|
||
if wfJson['aliases'][aliasIndex] != newAlias:
|
||
changed = True
|
||
wfJson['aliases'][aliasIndex] = newAlias
|
||
else:
|
||
wfJson['aliases'].append(newAlias)
|
||
changed = True
|
||
return changed
|
||
|
||
|
||
def webfingerUpdate(baseDir: str, nickname: str, domain: str,
|
||
onionDomain: str,
|
||
cachedWebfingers: {}) -> None:
|
||
handle = nickname + '@' + domain
|
||
wfSubdir = '/wfendpoints'
|
||
if not os.path.isdir(baseDir + wfSubdir):
|
||
return
|
||
|
||
filename = baseDir + wfSubdir + '/' + handle.lower() + '.json'
|
||
onionify = False
|
||
if onionDomain:
|
||
if onionDomain in handle:
|
||
handle = handle.replace(onionDomain, domain)
|
||
onionify = True
|
||
if not onionify:
|
||
wfJson = loadJson(filename)
|
||
else:
|
||
wfJson = loadJsonOnionify(filename, domain, onionDomain)
|
||
if not wfJson:
|
||
return
|
||
|
||
actorFilename = baseDir + '/accounts/' + handle.lower() + '.json'
|
||
actorJson = loadJson(actorFilename)
|
||
if not actorJson:
|
||
return
|
||
|
||
if webfingerUpdateFromProfile(wfJson, actorJson):
|
||
if saveJson(wfJson, filename):
|
||
cachedWebfingers[handle] = wfJson
|