Split out password/captcha/email logic.
This commit is contained in:
Kegan Dougal
parent
34878bc26a
commit
285ecaacd0
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@ -40,8 +40,7 @@ class RegistrationHandler(BaseHandler):
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self.distributor.declare("registered_user")
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@defer.inlineCallbacks
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def register(self, localpart=None, password=None, threepidCreds=None,
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captcha_info={}):
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def register(self, localpart=None, password=None):
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"""Registers a new client on the server.
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Args:
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@ -54,37 +53,6 @@ class RegistrationHandler(BaseHandler):
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Raises:
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RegistrationError if there was a problem registering.
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"""
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if captcha_info:
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captcha_response = yield self._validate_captcha(
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captcha_info["ip"],
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captcha_info["private_key"],
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captcha_info["challenge"],
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captcha_info["response"]
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)
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if not captcha_response["valid"]:
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logger.info("Invalid captcha entered from %s. Error: %s",
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captcha_info["ip"], captcha_response["error_url"])
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raise InvalidCaptchaError(
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error_url=captcha_response["error_url"]
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)
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else:
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logger.info("Valid captcha entered from %s", captcha_info["ip"])
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if threepidCreds:
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for c in threepidCreds:
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logger.info("validating theeepidcred sid %s on id server %s",
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c['sid'], c['idServer'])
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try:
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threepid = yield self._threepid_from_creds(c)
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except:
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logger.err()
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raise RegistrationError(400, "Couldn't validate 3pid")
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if not threepid:
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raise RegistrationError(400, "Couldn't validate 3pid")
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logger.info("got threepid medium %s address %s",
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threepid['medium'], threepid['address'])
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password_hash = None
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if password:
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password_hash = bcrypt.hashpw(password, bcrypt.gensalt())
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@ -126,15 +94,54 @@ class RegistrationHandler(BaseHandler):
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raise RegistrationError(
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500, "Cannot generate user ID.")
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defer.returnValue((user_id, token))
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@defer.inlineCallbacks
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def check_recaptcha(self, ip, private_key, challenge, response):
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"""Checks a recaptcha is correct."""
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captcha_response = yield self._validate_captcha(
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ip,
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private_key,
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challenge,
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response
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)
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if not captcha_response["valid"]:
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logger.info("Invalid captcha entered from %s. Error: %s",
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ip, captcha_response["error_url"])
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raise InvalidCaptchaError(
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error_url=captcha_response["error_url"]
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)
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else:
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logger.info("Valid captcha entered from %s", ip)
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@defer.inlineCallbacks
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def register_email(self, threepidCreds):
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"""Registers emails with an identity server."""
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for c in threepidCreds:
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logger.info("validating theeepidcred sid %s on id server %s",
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c['sid'], c['idServer'])
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try:
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threepid = yield self._threepid_from_creds(c)
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except:
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logger.err()
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raise RegistrationError(400, "Couldn't validate 3pid")
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if not threepid:
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raise RegistrationError(400, "Couldn't validate 3pid")
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logger.info("got threepid medium %s address %s",
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threepid['medium'], threepid['address'])
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@defer.inlineCallbacks
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def bind_emails(self, user_id, threepidCreds):
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"""Links emails with a user ID and informs an identity server."""
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# Now we have a matrix ID, bind it to the threepids we were given
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if threepidCreds:
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for c in threepidCreds:
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# XXX: This should be a deferred list, shouldn't it?
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yield self._bind_threepid(c, user_id)
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defer.returnValue((user_id, token))
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def _generate_token(self, user_id):
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# urlsafe variant uses _ and - so use . as the separator and replace
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# all =s with .s so http clients don't quote =s when it is used as
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@ -200,7 +207,8 @@ class RegistrationHandler(BaseHandler):
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data = yield client.post_urlencoded_get_raw(
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"www.google.com:80",
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"/recaptcha/api/verify",
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accept_partial=True, # twisted dislikes google's response, no content length.
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# twisted dislikes google's response, no content length.
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accept_partial=True,
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args={
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'privatekey': private_key,
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'remoteip': ip_addr,
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@ -19,26 +19,60 @@ from twisted.internet import defer
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from synapse.api.errors import SynapseError, Codes
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from synapse.api.constants import LoginType
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from base import RestServlet, client_path_pattern
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import synapse.util.stringutils as stringutils
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import json
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import logging
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import urllib
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logger = logging.getLogger(__name__)
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class RegisterRestServlet(RestServlet):
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"""Handles registration with the home server.
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This servlet is in control of the registration flow; the registration
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handler doesn't have a concept of multi-stages or sessions.
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"""
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PATTERN = client_path_pattern("/register$")
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def __init__(self, hs):
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super(RegisterRestServlet, self).__init__(hs)
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# sessions are stored as:
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# self.sessions = {
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# "session_id" : { __session_dict__ }
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# }
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# TODO: persistent storage
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self.sessions = {}
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def on_GET(self, request):
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if self.hs.config.enable_registration_captcha:
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return (200, {
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"flows": [
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{
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"type": LoginType.RECAPTCHA,
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"stages": ([LoginType.RECAPTCHA, LoginType.EMAIL_IDENTITY,
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"stages": ([LoginType.RECAPTCHA,
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LoginType.EMAIL_IDENTITY,
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LoginType.PASSWORD])
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},
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{
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"type": LoginType.RECAPTCHA,
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"stages": [LoginType.RECAPTCHA, LoginType.PASSWORD]
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}
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]
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})
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else:
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return (200, {
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"flows": [
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{
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"type": LoginType.EMAIL_IDENTITY,
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"stages": ([LoginType.EMAIL_IDENTITY,
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LoginType.PASSWORD])
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},
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{
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"type": LoginType.PASSWORD
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}
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]
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})
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@ -56,51 +90,63 @@ class RegisterRestServlet(RestServlet):
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LoginType.EMAIL_IDENTITY: self._do_email_identity
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}
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session_info = None
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if session:
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session_info = self._get_session_info(session)
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session_info = self._get_session_info(request, session)
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logger.debug("%s : session info %s request info %s",
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login_type, session_info, register_json)
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response = yield stages[login_type](
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request,
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register_json,
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session_info
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)
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if "access_token" not in response:
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# isn't a final response
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response["session"] = session_info["id"]
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response = yield stages[login_type](register_json, session_info)
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defer.returnValue((200, response))
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except KeyError:
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raise SynapseError(400, "Bad login type.")
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except KeyError as e:
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logger.exception(e)
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raise SynapseError(400, "Missing JSON keys or bad login type.")
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def on_OPTIONS(self, request):
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return (200, {})
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desired_user_id = None
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password = None
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def _get_session_info(self, request, session_id):
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if not session_id:
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# create a new session
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while session_id is None or session_id in self.sessions:
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session_id = stringutils.random_string(24)
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self.sessions[session_id] = {
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"id": session_id,
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LoginType.EMAIL_IDENTITY: False,
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LoginType.RECAPTCHA: False
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}
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if "password" in register_json:
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password = register_json["password"].encode("utf-8")
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return self.sessions[session_id]
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if ("user_id" in register_json and
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type(register_json["user_id"]) == unicode):
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desired_user_id = register_json["user_id"].encode("utf-8")
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if urllib.quote(desired_user_id) != desired_user_id:
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raise SynapseError(
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400,
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"User ID must only contain characters which do not " +
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"require URL encoding.")
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def _save_session(self, session):
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# TODO: Persistent storage
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logger.debug("Saving session %s", session)
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self.sessions[session["id"]] = session
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threepidCreds = None
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if 'threepidCreds' in register_json:
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threepidCreds = register_json['threepidCreds']
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def _remove_session(self, session):
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logger.debug("Removing session %s", session)
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self.sessions.pop(session["id"])
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def _do_recaptcha(self, request, register_json, session):
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if not self.hs.config.enable_registration_captcha:
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raise SynapseError(400, "Captcha not required.")
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captcha = {}
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if self.hs.config.enable_registration_captcha:
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challenge = None
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user_response = None
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try:
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captcha_type = register_json["captcha"]["type"]
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if captcha_type != "m.login.recaptcha":
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raise SynapseError(400, "Sorry, only m.login.recaptcha " +
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"requests are supported.")
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challenge = register_json["captcha"]["challenge"]
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user_response = register_json["captcha"]["response"]
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challenge = register_json["challenge"]
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user_response = register_json["response"]
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except KeyError:
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raise SynapseError(400, "Captcha response is required",
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errcode=Codes.CAPTCHA_NEEDED)
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# TODO determine the source IP : May be an X-Forwarding-For header depending on config
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# May be an X-Forwarding-For header depending on config
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ip_addr = request.getClientIP()
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if self.hs.config.captcha_ip_origin_is_x_forwarded:
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# use the header
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@ -108,44 +154,66 @@ class RegisterRestServlet(RestServlet):
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ip_addr = request.requestHeaders.getRawHeaders(
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"X-Forwarded-For")[0]
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captcha = {
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"ip": ip_addr,
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"private_key": self.hs.config.recaptcha_private_key,
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"challenge": challenge,
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"response": user_response
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}
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handler = self.handlers.registration_handler
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yield handler.check_recaptcha(
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ip_addr,
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self.hs.config.recaptcha_private_key,
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challenge,
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user_response
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)
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session[LoginType.RECAPTCHA] = True # mark captcha as done
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self._save_session(session)
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defer.returnValue({
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"next": [LoginType.PASSWORD, LoginType.EMAIL_IDENTITY]
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})
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@defer.inlineCallbacks
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def _do_email_identity(self, request, register_json, session):
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if (self.hs.config.enable_registration_captcha and
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not session[LoginType.RECAPTCHA]):
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raise SynapseError(400, "Captcha is required.")
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threepidCreds = register_json['threepidCreds']
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handler = self.handlers.registration_handler
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yield handler.register_email(threepidCreds)
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session["threepidCreds"] = threepidCreds # store creds for next stage
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session[LoginType.EMAIL_IDENTITY] = True # mark email as done
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self._save_session(session)
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defer.returnValue({
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"next": LoginType.PASSWORD
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})
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@defer.inlineCallbacks
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def _do_password(self, request, register_json, session):
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if (self.hs.config.enable_registration_captcha and
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not session[LoginType.RECAPTCHA]):
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# captcha should've been done by this stage!
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raise SynapseError(400, "Captcha is required.")
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password = register_json["password"].encode("utf-8")
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desired_user_id = (register_json["user_id"].encode("utf-8") if "user_id"
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in register_json else None)
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if desired_user_id and urllib.quote(desired_user_id) != desired_user_id:
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raise SynapseError(
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400,
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"User ID must only contain characters which do not " +
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"require URL encoding.")
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handler = self.handlers.registration_handler
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(user_id, token) = yield handler.register(
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localpart=desired_user_id,
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password=password,
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threepidCreds=threepidCreds,
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captcha_info=captcha)
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password=password
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)
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if session[LoginType.EMAIL_IDENTITY]:
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yield handler.bind_emails(user_id, session["threepidCreds"])
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result = {
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"user_id": user_id,
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"access_token": token,
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"home_server": self.hs.hostname,
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}
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defer.returnValue(
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(200, result)
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)
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def on_OPTIONS(self, request):
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return (200, {})
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def _get_session_info(self, session_id):
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pass
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def _do_recaptcha(self, register_json, session):
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pass
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def _do_email_identity(self, register_json, session):
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pass
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def _do_password(self, register_json, session):
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pass
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self._remove_session(session)
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defer.returnValue(result)
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def _parse_json(request):
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@ -157,5 +225,6 @@ def _parse_json(request):
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except ValueError:
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raise SynapseError(400, "Content not JSON.")
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def register_servlets(hs, http_server):
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RegisterRestServlet(hs).register(http_server)
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