def validateSessionWithToken(self, sid, clientSecret, token):
valSessionStore = ThreePidValSessionStore(self.sydent)
s = valSessionStore.getTokenSessionById(sid)
if not s:
logger.info("Session ID %s not found", (sid))
return False
if not clientSecret == s.clientSecret:
logger.info("Incorrect client secret", (sid))
raise IncorrectClientSecretException()
if s.mtime + ValidationSession.THREEPID_SESSION_VALIDATION_TIMEOUT < time_msec():
logger.info("Session expired")
raise SessionExpiredException()
# TODO once we can validate the token oob
#if tokenObj.validated and clientSecret == tokenObj.clientSecret:
# return True
if s.token == token:
logger.info("Setting session %s as validated", (s.id))
valSessionStore.setValidated(s.id, True)
return {'success': True}
else:
logger.info("Incorrect token submitted")
return False
def render_GET(self, request):
err, args = get_args(request, ('sid', 'client_secret'))
if err:
return err
sid = args['sid']
clientSecret = args['client_secret']
valSessionStore = ThreePidValSessionStore(self.sydent)
noMatchError = {'errcode': 'M_NO_VALID_SESSION',
'error': "No valid session was found matching that sid and client secret"}
try:
s = valSessionStore.getValidatedSession(sid, clientSecret)
except IncorrectClientSecretException:
return noMatchError
except SessionExpiredException:
return {'errcode': 'M_SESSION_EXPIRED',
'error': "This validation session has expired: call requestToken again"}
except InvalidSessionIdException:
return noMatchError
except SessionNotValidatedException:
return {'errcode': 'M_SESSION_NOT_VALIDATED',
'error': "This validation session has not yet been completed"}
return { 'medium': s.medium, 'address': s.address, 'validated_at': s.mtime }
def render_POST(self, request):
send_cors(request)
err, args = get_args(request, ('sid', 'client_secret', 'mxid'))
if err:
return err
sid = args['sid']
mxid = args['mxid']
clientSecret = args['client_secret']
# Return the same error for not found / bad client secret otherwise people can get information about
# sessions without knowing the secret
noMatchError = {'errcode': 'M_NO_VALID_SESSION',
'error': "No valid session was found matching that sid and client secret"}
try:
valSessionStore = ThreePidValSessionStore(self.sydent)
s = valSessionStore.getValidatedSession(sid, clientSecret)
except IncorrectClientSecretException:
return noMatchError
except SessionExpiredException:
return {'errcode': 'M_SESSION_EXPIRED',
'error': "This validation session has expired: call requestToken again"}
except InvalidSessionIdException:
return noMatchError
except SessionNotValidatedException:
return {'errcode': 'M_SESSION_NOT_VALIDATED',
'error': "This validation session has not yet been completed"}
res = self.sydent.threepidBinder.addBinding(s.medium, s.address, mxid)
return res
def validateSessionWithToken(sydent, sid, clientSecret, token):
"""
Attempt to validate a session, identified by the sid, using
the token from out-of-band. The client secret is given to
prevent attempts to guess the token for a sid.
If the session was sucessfully validated, return a dict
with 'success': True that can be sent to the client,
otherwise return False.
"""
valSessionStore = ThreePidValSessionStore(sydent)
s = valSessionStore.getTokenSessionById(sid)
if not s:
logger.info("Session ID %s not found", (sid))
return False
if not clientSecret == s.clientSecret:
logger.info("Incorrect client secret", (sid))
raise IncorrectClientSecretException()
if s.mtime + ValidationSession.THREEPID_SESSION_VALIDATION_TIMEOUT_MS < time_msec():
logger.info("Session expired")
raise SessionExpiredException()
# TODO once we can validate the token oob
#if tokenObj.validated and clientSecret == tokenObj.clientSecret:
# return True
if s.token == token:
logger.info("Setting session %s as validated", (s.id))
valSessionStore.setValidated(s.id, True)
return {'success': True}
else:
logger.info("Incorrect token submitted")
return False
def addBinding(self, valSessionId, clientSecret, mxid):
valSessionStore = ThreePidValSessionStore(self.sydent)
localAssocStore = LocalAssociationStore(self.sydent)
s = valSessionStore.getValidatedSession(valSessionId, clientSecret)
createdAt = time_msec()
expires = createdAt + ThreepidBinder.THREEPID_ASSOCIATION_LIFETIME_MS
assoc = ThreepidAssociation(s.medium, s.address, mxid, createdAt, createdAt, expires)
localAssocStore.addOrUpdateAssociation(assoc)
self.sydent.pusher.doLocalPush()
assocSigner = AssociationSigner(self.sydent)
sgassoc = assocSigner.signedThreePidAssociation(assoc)
return sgassoc
def requestToken(self, emailAddress, clientSecret, sendAttempt, nextLink, ipaddress=None):
valSessionStore = ThreePidValSessionStore(self.sydent)
valSession = valSessionStore.getOrCreateTokenSession(medium='email', address=emailAddress,
clientSecret=clientSecret)
valSessionStore.setMtime(valSession.id, time_msec())
if int(valSession.sendAttemptNumber) >= int(sendAttempt):
logger.info("Not mailing code because current send attempt (%d) is not less than given send attempt (%s)", int(sendAttempt), int(valSession.sendAttemptNumber))
return valSession.id
ipstring = ipaddress if ipaddress else u"an unknown location"
substitutions = {
'ipaddress': ipstring,
'link': self.makeValidateLink(valSession, clientSecret, nextLink),
'token': valSession.token,
}
logger.info(
"Attempting to mail code %s (nextLink: %s) to %s",
valSession.token, nextLink, emailAddress,
)
sendEmail(self.sydent, 'email.template', emailAddress, substitutions)
valSessionStore.setSendAttemptNumber(valSession.id, sendAttempt)
return valSession.id
def render_GET(self, request):
# err = require_args(request, ('sid', 'client_secret'))
err = require_args(request, ('sid',))
if err:
return err
sid = request.args['sid'][0]
#clientSecret = request.args['client_secret'][0]
if 'client_secret' in request.args:
clientSecret = request.args['client_secret'][0]
elif 'clientSecret' in request.args:
clientSecret = request.args['clientSecret'][0]
else:
request.setResponseCode(400)
return {'errcode': 'M_MISSING_PARAM', 'error':'No client_secret'}
valSessionStore = ThreePidValSessionStore(self.sydent)
noMatchError = {'errcode': 'M_NO_VALID_SESSION',
'error': "No valid session was found matching that sid and client secret"}
try:
s = valSessionStore.getValidatedSession(sid, clientSecret)
except IncorrectClientSecretException:
return noMatchError
except SessionExpiredException:
return {'errcode': 'M_SESSION_EXPIRED',
'error': "This validation session has expired: call requestToken again"}
except InvalidSessionIdException:
return noMatchError
except SessionNotValidatedException:
return {'errcode': 'M_SESSION_NOT_VALIDATED',
'error': "This validation session has not yet been completed"}
return { 'medium': s.medium, 'address': s.address, 'validated_at': s.mtime }
def addBinding(self, valSessionId, clientSecret, mxid):
valSessionStore = ThreePidValSessionStore(self.sydent)
localAssocStore = LocalAssociationStore(self.sydent)
s = valSessionStore.getValidatedSession(valSessionId, clientSecret)
createdAt = time_msec()
expires = createdAt + ThreepidBinder.THREEPID_ASSOCIATION_LIFETIME_MS
assoc = ThreepidAssociation(s.medium, s.address, mxid, createdAt, createdAt, expires)
localAssocStore.addOrUpdateAssociation(assoc)
self.sydent.pusher.doLocalPush()
joinTokenStore = JoinTokenStore(self.sydent)
pendingJoinTokens = joinTokenStore.getTokens(s.medium, s.address)
invites = []
for token in pendingJoinTokens:
token["mxid"] = mxid
token["signed"] = {
"mxid": mxid,
"token": token["token"],
}
token["signed"] = signedjson.sign.sign_json(token["signed"], self.sydent.server_name, self.sydent.keyring.ed25519)
invites.append(token)
if invites:
assoc.extra_fields["invites"] = invites
joinTokenStore.markTokensAsSent(s.medium, s.address)
assocSigner = AssociationSigner(self.sydent)
sgassoc = assocSigner.signedThreePidAssociation(assoc)
self._notify(sgassoc, 0)
return sgassoc
def requestToken(self, phoneNumber, clientSecret, sendAttempt, nextLink):
if str(phoneNumber.country_code) in self.smsRules:
action = self.smsRules[str(phoneNumber.country_code)]
if action == 'reject':
raise DestinationRejectedException()
valSessionStore = ThreePidValSessionStore(self.sydent)
msisdn = phonenumbers.format_number(
phoneNumber, phonenumbers.PhoneNumberFormat.E164)[1:]
valSession = valSessionStore.getOrCreateTokenSession(
medium='msisdn', address=msisdn, clientSecret=clientSecret)
valSessionStore.setMtime(valSession.id, time_msec())
if int(valSession.sendAttemptNumber) >= int(sendAttempt):
logger.info(
"Not texting code because current send attempt (%d) is not less than given send attempt (%s)",
int(sendAttempt), int(valSession.sendAttemptNumber))
return valSession.id
smsBodyTemplate = self.sydent.cfg.get('sms', 'bodyTemplate')
originator = self.getOriginator(phoneNumber)
logger.info(
"Attempting to text code %s to %s (country %d) with originator %s",
valSession.token, msisdn, phoneNumber.country_code, originator)
smsBody = smsBodyTemplate.format(token=valSession.token)
self.omSms.sendTextSMS(smsBody, msisdn, originator)
valSessionStore.setSendAttemptNumber(valSession.id, sendAttempt)
return valSession.id
def requestToken(self, phoneNumber, clientSecret, sendAttempt, nextLink):
if str(phoneNumber.country_code) in self.smsRules:
action = self.smsRules[str(phoneNumber.country_code)]
if action == 'reject':
raise DestinationRejectedException()
valSessionStore = ThreePidValSessionStore(self.sydent)
msisdn = phonenumbers.format_number(
phoneNumber, phonenumbers.PhoneNumberFormat.E164
)[1:]
valSession = valSessionStore.getOrCreateTokenSession(
medium='msisdn', address=msisdn, clientSecret=clientSecret
)
valSessionStore.setMtime(valSession.id, time_msec())
if int(valSession.sendAttemptNumber) >= int(sendAttempt):
logger.info("Not texting code because current send attempt (%d) is not less than given send attempt (%s)", int(sendAttempt), int(valSession.sendAttemptNumber))
return valSession.id
smsBodyTemplate = self.sydent.cfg.get('sms', 'bodyTemplate')
originator = self.getOriginator(phoneNumber)
logger.info(
"Attempting to text code %s to %s (country %d) with originator %s",
valSession.token, msisdn, phoneNumber.country_code, originator
)
smsBody = smsBodyTemplate.format(token=valSession.token)
self.omSms.sendTextSMS(smsBody, msisdn, originator)
valSessionStore.setSendAttemptNumber(valSession.id, sendAttempt)
return valSession.id
def requestToken(self,
emailAddress,
clientSecret,
sendAttempt,
nextLink,
ipaddress=None,
brand=None):
"""
Creates or retrieves a validation session and sends an email to the corresponding
email address with a token to use to verify the association.
:param emailAddress: The email address to send the email to.
:type emailAddress: unicode
:param clientSecret: The client secret to use.
:type clientSecret: unicode
:param sendAttempt: The current send attempt.
:type sendAttempt: int
:param nextLink: The link to redirect the user to once they have completed the
validation.
:type nextLink: unicode
:param ipaddress: The requester's IP address.
:type ipaddress: str or None
:param brand: A hint at a brand from the request.
:type brand: str or None
:return: The ID of the session created (or of the existing one if any)
:rtype: int
"""
valSessionStore = ThreePidValSessionStore(self.sydent)
valSession = valSessionStore.getOrCreateTokenSession(
medium=u'email', address=emailAddress, clientSecret=clientSecret)
valSessionStore.setMtime(valSession.id, time_msec())
templateFile = self.sydent.get_branded_template(
brand,
"verification_template.eml",
('email', 'email.template'),
)
if int(valSession.sendAttemptNumber) >= int(sendAttempt):
logger.info(
"Not mailing code because current send attempt (%d) is not less than given send attempt (%s)",
int(sendAttempt), int(valSession.sendAttemptNumber))
return valSession.id
ipstring = ipaddress if ipaddress else u"an unknown location"
substitutions = {
'ipaddress': ipstring,
'link': self.makeValidateLink(valSession, clientSecret, nextLink),
'token': valSession.token,
}
logger.info(
"Attempting to mail code %s (nextLink: %s) to %s",
valSession.token,
nextLink,
emailAddress,
)
sendEmail(self.sydent, templateFile, emailAddress, substitutions)
valSessionStore.setSendAttemptNumber(valSession.id, sendAttempt)
return valSession.id
def __init__(self, cfg, reactor=twisted.internet.reactor):
self.reactor = reactor
self.config_file = get_config_file_path()
self.cfg = cfg
logger.info("Starting Sydent server")
self.pidfile = self.cfg.get('general', "pidfile.path")
self.db = SqliteDatabase(self).db
self.server_name = self.cfg.get('general', 'server.name')
if self.server_name == '':
self.server_name = os.uname()[1]
logger.warn((
"You had not specified a server name. I have guessed that this server is called '%s' "
+
"and saved this in the config file. If this is incorrect, you should edit server.name in "
+ "the config file.") % (self.server_name, ))
self.cfg.set('general', 'server.name', self.server_name)
self.save_config()
if self.cfg.has_option("general", "sentry_dsn"):
# Only import and start sentry SDK if configured.
import sentry_sdk
sentry_sdk.init(dsn=self.cfg.get("general", "sentry_dsn"), )
with sentry_sdk.configure_scope() as scope:
scope.set_tag("sydent_server_name", self.server_name)
if self.cfg.has_option("general", "prometheus_port"):
import prometheus_client
prometheus_client.start_http_server(
port=self.cfg.getint("general", "prometheus_port"),
addr=self.cfg.get("general", "prometheus_addr"),
)
self.enable_v1_associations = parse_cfg_bool(
self.cfg.get("general", "enable_v1_associations"))
self.delete_tokens_on_bind = parse_cfg_bool(
self.cfg.get("general", "delete_tokens_on_bind"))
# See if a pepper already exists in the database
# Note: This MUST be run before we start serving requests, otherwise lookups for
# 3PID hashes may come in before we've completed generating them
hashing_metadata_store = HashingMetadataStore(self)
lookup_pepper = hashing_metadata_store.get_lookup_pepper()
if not lookup_pepper:
# No pepper defined in the database, generate one
lookup_pepper = generateAlphanumericTokenOfLength(5)
# Store it in the database and rehash 3PIDs
hashing_metadata_store.store_lookup_pepper(
sha256_and_url_safe_base64, lookup_pepper)
self.validators = Validators()
self.validators.email = EmailValidator(self)
self.validators.msisdn = MsisdnValidator(self)
self.keyring = Keyring()
self.keyring.ed25519 = SydentEd25519(self).signing_key
self.keyring.ed25519.alg = 'ed25519'
self.sig_verifier = Verifier(self)
self.servlets = Servlets()
self.servlets.v1 = V1Servlet(self)
self.servlets.v2 = V2Servlet(self)
self.servlets.emailRequestCode = EmailRequestCodeServlet(self)
self.servlets.emailValidate = EmailValidateCodeServlet(self)
self.servlets.msisdnRequestCode = MsisdnRequestCodeServlet(self)
self.servlets.msisdnValidate = MsisdnValidateCodeServlet(self)
self.servlets.lookup = LookupServlet(self)
self.servlets.bulk_lookup = BulkLookupServlet(self)
self.servlets.hash_details = HashDetailsServlet(self, lookup_pepper)
self.servlets.lookup_v2 = LookupV2Servlet(self, lookup_pepper)
self.servlets.pubkey_ed25519 = Ed25519Servlet(self)
self.servlets.pubkeyIsValid = PubkeyIsValidServlet(self)
self.servlets.ephemeralPubkeyIsValid = EphemeralPubkeyIsValidServlet(
self)
self.servlets.threepidBind = ThreePidBindServlet(self)
self.servlets.threepidUnbind = ThreePidUnbindServlet(self)
self.servlets.replicationPush = ReplicationPushServlet(self)
self.servlets.getValidated3pid = GetValidated3pidServlet(self)
self.servlets.storeInviteServlet = StoreInviteServlet(self)
self.servlets.blindlySignStuffServlet = BlindlySignStuffServlet(self)
self.servlets.termsServlet = TermsServlet(self)
self.servlets.accountServlet = AccountServlet(self)
self.servlets.registerServlet = RegisterServlet(self)
self.servlets.logoutServlet = LogoutServlet(self)
self.threepidBinder = ThreepidBinder(self)
self.sslComponents = SslComponents(self)
self.clientApiHttpServer = ClientApiHttpServer(self)
self.replicationHttpsServer = ReplicationHttpsServer(self)
self.replicationHttpsClient = ReplicationHttpsClient(self)
self.pusher = Pusher(self)
# A dedicated validation session store just to clean up old sessions every N minutes
self.cleanupValSession = ThreePidValSessionStore(self)
cb = task.LoopingCall(self.cleanupValSession.deleteOldSessions)
cb.clock = self.reactor
cb.start(10 * 60.0)
def _async_render_POST(self, request):
try:
try:
body = json.load(request.content)
except ValueError:
request.setResponseCode(400)
request.write(json.dumps({'errcode': 'M_BAD_JSON', 'error': 'Malformed JSON'}))
request.finish()
return
missing = [k for k in ("threepid", "mxid") if k not in body]
if len(missing) > 0:
request.setResponseCode(400)
msg = "Missing parameters: "+(",".join(missing))
request.write(json.dumps({'errcode': 'M_MISSING_PARAMS', 'error': msg}))
request.finish()
return
threepid = body['threepid']
mxid = body['mxid']
if 'medium' not in threepid or 'address' not in threepid:
request.setResponseCode(400)
request.write(json.dumps({'errcode': 'M_MISSING_PARAMS', 'error': 'Threepid lacks medium / address'}))
request.finish()
return
# We now check for authentication in two different ways, depending
# on the contents of the request. If the user has supplied "sid"
# (the Session ID returned by Sydent during the original binding)
# and "client_secret" fields, they are trying to provie that they
# were the original author of the bind. We then check that what
# they supply matches and if it does, allow the unbind.
#
# However if these fields are not supplied, we instead check
# whether the request originated from a homeserver, and if so the
# same homeserver that originally created the bind. We do this by
# checking the signature of the request. If it all matches up, we
# allow the unbind.
#
# Only one method of authentication is required.
if 'sid' in body and 'client_secret' in body:
sid = body['sid']
client_secret = body['client_secret']
valSessionStore = ThreePidValSessionStore(self.sydent)
noMatchError = {'errcode': 'M_NO_VALID_SESSION',
'error': "No valid session was found matching that sid and client secret"}
try:
s = valSessionStore.getValidatedSession(sid, client_secret)
except IncorrectClientSecretException:
request.setResponseCode(401)
request.write(json.dumps(noMatchError))
request.finish()
return
except InvalidSessionIdException:
request.setResponseCode(401)
request.write(json.dumps(noMatchError))
request.finish()
return
except SessionNotValidatedException:
request.setResponseCode(403)
request.write(json.dumps({
'errcode': 'M_SESSION_NOT_VALIDATED',
'error': "This validation session has not yet been completed"
}))
return
if s.medium != threepid['medium'] or s.address != threepid['address']:
request.setResponseCode(403)
request.write(json.dumps({
'errcode': 'M_FORBIDDEN',
'error': 'Provided session information does not match medium/address combo',
}))
request.finish()
return
else:
try:
origin_server_name = yield self.sydent.sig_verifier.authenticate_request(request, body)
except SignatureVerifyException as ex:
request.setResponseCode(401)
request.write(json.dumps({'errcode': 'M_FORBIDDEN', 'error': ex.message}))
request.finish()
return
except NoAuthenticationError as ex:
request.setResponseCode(401)
request.write(json.dumps({'errcode': 'M_FORBIDDEN', 'error': ex.message}))
request.finish()
return
except:
logger.exception("Exception whilst authenticating unbind request")
request.setResponseCode(500)
request.write(json.dumps({'errcode': 'M_UNKNOWN', 'error': 'Internal Server Error'}))
request.finish()
return
if not mxid.endswith(':' + origin_server_name):
request.setResponseCode(403)
request.write(json.dumps({'errcode': 'M_FORBIDDEN', 'error': 'Origin server name does not match mxid'}))
request.finish()
return
try:
res = self.sydent.threepidBinder.removeBinding(threepid, mxid)
except ValueError:
# User could have provided correct 3PID/sid/client_secret
# details but not the correct mxid, which would cause the
# binding removal to fail
request.setResponseCode(400)
request.write(json.dumps({'errcode': 'M_UNKNOWN', 'error': "Association between provided mxid and 3pid not found"}))
request.finish()
return
request.write(json.dumps({}))
request.finish()
except Exception as ex:
logger.exception("Exception whilst handling unbind")
request.setResponseCode(500)
request.write(json.dumps({'errcode': 'M_UNKNOWN', 'error': ex.message}))
request.finish()
async def _async_render_POST(self, request: Request) -> None:
try:
try:
# TODO: we should really validate that this gives us a dict, and
# not some other json value like str, list, int etc
# json.loads doesn't allow bytes in Python 3.5
body: JsonDict = json_decoder.decode(
request.content.read().decode("UTF-8"))
except ValueError:
request.setResponseCode(HTTPStatus.BAD_REQUEST)
request.write(
dict_to_json_bytes({
"errcode": "M_BAD_JSON",
"error": "Malformed JSON"
}))
request.finish()
return
missing = [k for k in ("threepid", "mxid") if k not in body]
if len(missing) > 0:
request.setResponseCode(HTTPStatus.BAD_REQUEST)
msg = "Missing parameters: " + (",".join(missing))
request.write(
dict_to_json_bytes({
"errcode": "M_MISSING_PARAMS",
"error": msg
}))
request.finish()
return
threepid = body["threepid"]
mxid = body["mxid"]
if "medium" not in threepid or "address" not in threepid:
request.setResponseCode(HTTPStatus.BAD_REQUEST)
request.write(
dict_to_json_bytes({
"errcode":
"M_MISSING_PARAMS",
"error":
"Threepid lacks medium / address",
}))
request.finish()
return
# We now check for authentication in two different ways, depending
# on the contents of the request. If the user has supplied "sid"
# (the Session ID returned by Sydent during the original binding)
# and "client_secret" fields, they are trying to prove that they
# were the original author of the bind. We then check that what
# they supply matches and if it does, allow the unbind.
#
# However if these fields are not supplied, we instead check
# whether the request originated from a homeserver, and if so the
# same homeserver that originally created the bind. We do this by
# checking the signature of the request. If it all matches up, we
# allow the unbind.
#
# Only one method of authentication is required.
if "sid" in body and "client_secret" in body:
sid = body["sid"]
client_secret = body["client_secret"]
if not is_valid_client_secret(client_secret):
request.setResponseCode(HTTPStatus.BAD_REQUEST)
request.write(
dict_to_json_bytes({
"errcode":
"M_INVALID_PARAM",
"error":
"Invalid client_secret provided",
}))
request.finish()
return
valSessionStore = ThreePidValSessionStore(self.sydent)
try:
s = valSessionStore.getValidatedSession(sid, client_secret)
except (IncorrectClientSecretException,
InvalidSessionIdException):
request.setResponseCode(HTTPStatus.UNAUTHORIZED)
request.write(
dict_to_json_bytes({
"errcode":
"M_NO_VALID_SESSION",
"error":
"No valid session was found matching that sid and client secret",
}))
request.finish()
return
except SessionNotValidatedException:
request.setResponseCode(HTTPStatus.FORBIDDEN)
request.write(
dict_to_json_bytes({
"errcode":
"M_SESSION_NOT_VALIDATED",
"error":
"This validation session has not yet been completed",
}))
return
if s.medium != threepid["medium"] or s.address != threepid[
"address"]:
request.setResponseCode(HTTPStatus.FORBIDDEN)
request.write(
dict_to_json_bytes({
"errcode":
"M_FORBIDDEN",
"error":
"Provided session information does not match medium/address combo",
}))
request.finish()
return
else:
try:
origin_server_name = (
await self.sydent.sig_verifier.authenticate_request(
request, body))
except SignatureVerifyException as ex:
request.setResponseCode(HTTPStatus.UNAUTHORIZED)
request.write(
dict_to_json_bytes({
"errcode": "M_FORBIDDEN",
"error": str(ex)
}))
request.finish()
return
except NoAuthenticationError as ex:
request.setResponseCode(HTTPStatus.UNAUTHORIZED)
request.write(
dict_to_json_bytes({
"errcode": "M_FORBIDDEN",
"error": str(ex)
}))
request.finish()
return
except InvalidServerName as ex:
request.setResponseCode(HTTPStatus.BAD_REQUEST)
request.write(
dict_to_json_bytes({
"errcode": "M_INVALID_PARAM",
"error": str(ex)
}))
request.finish()
return
except (DNSLookupError, ConnectError, ResponseFailed) as e:
msg = (f"Unable to contact the Matrix homeserver to "
f"authenticate request ({type(e).__name__})")
logger.warning(msg)
request.setResponseCode(HTTPStatus.INTERNAL_SERVER_ERROR)
request.write(
dict_to_json_bytes({
"errcode": "M_UNKNOWN",
"error": msg,
}))
request.finish()
return
except Exception:
logger.exception(
"Exception whilst authenticating unbind request")
request.setResponseCode(HTTPStatus.INTERNAL_SERVER_ERROR)
request.write(
dict_to_json_bytes({
"errcode": "M_UNKNOWN",
"error": "Internal Server Error"
}))
request.finish()
return
if not mxid.endswith(":" + origin_server_name):
request.setResponseCode(HTTPStatus.FORBIDDEN)
request.write(
dict_to_json_bytes({
"errcode":
"M_FORBIDDEN",
"error":
"Origin server name does not match mxid",
}))
request.finish()
return
self.sydent.threepidBinder.removeBinding(threepid, mxid)
request.write(dict_to_json_bytes({}))
request.finish()
except Exception as ex:
logger.exception("Exception whilst handling unbind")
request.setResponseCode(HTTPStatus.INTERNAL_SERVER_ERROR)
request.write(
dict_to_json_bytes({
"errcode": "M_UNKNOWN",
"error": str(ex)
}))
request.finish()
def _async_render_POST(self, request):
try:
try:
body = json.load(request.content)
except ValueError:
request.setResponseCode(400)
request.write(
json.dumps({
'errcode': 'M_BAD_JSON',
'error': 'Malformed JSON'
}))
request.finish()
return
missing = [k for k in ("threepid", "mxid") if k not in body]
if len(missing) > 0:
request.setResponseCode(400)
msg = "Missing parameters: " + (",".join(missing))
request.write(
json.dumps({
'errcode': 'M_MISSING_PARAMS',
'error': msg
}))
request.finish()
return
threepid = body['threepid']
mxid = body['mxid']
if 'medium' not in threepid or 'address' not in threepid:
request.setResponseCode(400)
request.write(
json.dumps({
'errcode': 'M_MISSING_PARAMS',
'error': 'Threepid lacks medium / address'
}))
request.finish()
return
# We now check for authentication in two different ways, depending
# on the contents of the request. If the user has supplied "sid"
# (the Session ID returned by Sydent during the original binding)
# and "client_secret" fields, they are trying to provie that they
# were the original author of the bind. We then check that what
# they supply matches and if it does, allow the unbind.
#
# However if these fields are not supplied, we instead check
# whether the request originated from a homeserver, and if so the
# same homeserver that originally created the bind. We do this by
# checking the signature of the request. If it all matches up, we
# allow the unbind.
#
# Only one method of authentication is required.
if 'sid' in body and 'client_secret' in body:
sid = body['sid']
client_secret = body['client_secret']
valSessionStore = ThreePidValSessionStore(self.sydent)
noMatchError = {
'errcode':
'M_NO_VALID_SESSION',
'error':
"No valid session was found matching that sid and client secret"
}
try:
s = valSessionStore.getValidatedSession(sid, client_secret)
except IncorrectClientSecretException:
request.setResponseCode(401)
request.write(json.dumps(noMatchError))
request.finish()
return
except InvalidSessionIdException:
request.setResponseCode(401)
request.write(json.dumps(noMatchError))
request.finish()
return
except SessionNotValidatedException:
request.setResponseCode(403)
request.write(
json.dumps({
'errcode':
'M_SESSION_NOT_VALIDATED',
'error':
"This validation session has not yet been completed"
}))
return
if s.medium != threepid['medium'] or s.address != threepid[
'address']:
request.setResponseCode(403)
request.write(
json.dumps({
'errcode':
'M_FORBIDDEN',
'error':
'Provided session information does not match medium/address combo',
}))
request.finish()
return
else:
try:
origin_server_name = yield self.sydent.sig_verifier.authenticate_request(
request, body)
except SignatureVerifyException as ex:
request.setResponseCode(401)
request.write(
json.dumps({
'errcode': 'M_FORBIDDEN',
'error': ex.message
}))
request.finish()
return
except NoAuthenticationError as ex:
request.setResponseCode(401)
request.write(
json.dumps({
'errcode': 'M_FORBIDDEN',
'error': ex.message
}))
request.finish()
return
except:
logger.exception(
"Exception whilst authenticating unbind request")
request.setResponseCode(500)
request.write(
json.dumps({
'errcode': 'M_UNKNOWN',
'error': 'Internal Server Error'
}))
request.finish()
return
if not mxid.endswith(':' + origin_server_name):
request.setResponseCode(403)
request.write(
json.dumps({
'errcode':
'M_FORBIDDEN',
'error':
'Origin server name does not match mxid'
}))
request.finish()
return
try:
res = self.sydent.threepidBinder.removeBinding(threepid, mxid)
except ValueError:
# User could have provided correct 3PID/sid/client_secret
# details but not the correct mxid, which would cause the
# binding removal to fail
request.setResponseCode(400)
request.write(
json.dumps({
'errcode':
'M_UNKNOWN',
'error':
"Association between provided mxid and 3pid not found"
}))
request.finish()
return
request.write(json.dumps({}))
request.finish()
except Exception as ex:
logger.exception("Exception whilst handling unbind")
request.setResponseCode(500)
request.write(
json.dumps({
'errcode': 'M_UNKNOWN',
'error': ex.message
}))
request.finish()
