diff options
Diffstat (limited to 'synapse/rest/client/v2_alpha/register.py')
| -rw-r--r-- | synapse/rest/client/v2_alpha/register.py | 422 |
1 files changed, 283 insertions, 139 deletions
diff --git a/synapse/rest/client/v2_alpha/register.py b/synapse/rest/client/v2_alpha/register.py index 05ea1459e3..4f24a124a6 100644 --- a/synapse/rest/client/v2_alpha/register.py +++ b/synapse/rest/client/v2_alpha/register.py @@ -16,7 +16,7 @@ import hmac import logging -from hashlib import sha1 +from typing import List, Union from six import string_types @@ -29,16 +29,25 @@ from synapse.api.errors import ( Codes, LimitExceededError, SynapseError, + ThreepidValidationError, UnrecognizedRequestError, ) +from synapse.config import ConfigError +from synapse.config.captcha import CaptchaConfig +from synapse.config.consent_config import ConsentConfig +from synapse.config.emailconfig import ThreepidBehaviour from synapse.config.ratelimiting import FederationRateLimitConfig +from synapse.config.registration import RegistrationConfig from synapse.config.server import is_threepid_reserved +from synapse.handlers.auth import AuthHandler +from synapse.http.server import finish_request from synapse.http.servlet import ( RestServlet, assert_params_in_dict, parse_json_object_from_request, parse_string, ) +from synapse.push.mailer import load_jinja2_templates from synapse.util.msisdn import phone_number_to_msisdn from synapse.util.ratelimitutils import FederationRateLimiter from synapse.util.threepids import check_3pid_allowed @@ -71,31 +80,87 @@ class EmailRegisterRequestTokenRestServlet(RestServlet): super(EmailRegisterRequestTokenRestServlet, self).__init__() self.hs = hs self.identity_handler = hs.get_handlers().identity_handler + self.config = hs.config + + if self.hs.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL: + from synapse.push.mailer import Mailer, load_jinja2_templates + + template_html, template_text = load_jinja2_templates( + self.config.email_template_dir, + [ + self.config.email_registration_template_html, + self.config.email_registration_template_text, + ], + apply_format_ts_filter=True, + apply_mxc_to_http_filter=True, + public_baseurl=self.config.public_baseurl, + ) + self.mailer = Mailer( + hs=self.hs, + app_name=self.config.email_app_name, + template_html=template_html, + template_text=template_text, + ) @defer.inlineCallbacks def on_POST(self, request): + if self.hs.config.threepid_behaviour_email == ThreepidBehaviour.OFF: + if self.hs.config.local_threepid_handling_disabled_due_to_email_config: + logger.warn( + "Email registration has been disabled due to lack of email config" + ) + raise SynapseError( + 400, "Email-based registration has been disabled on this server" + ) body = parse_json_object_from_request(request) - assert_params_in_dict( - body, ["id_server", "client_secret", "email", "send_attempt"] - ) + assert_params_in_dict(body, ["client_secret", "email", "send_attempt"]) + + # Extract params from body + client_secret = body["client_secret"] + email = body["email"] + send_attempt = body["send_attempt"] + next_link = body.get("next_link") # Optional param - if not check_3pid_allowed(self.hs, "email", body["email"]): + if not check_3pid_allowed(self.hs, "email", email): raise SynapseError( 403, "Your email domain is not authorized to register on this server", Codes.THREEPID_DENIED, ) - existingUid = yield self.hs.get_datastore().get_user_id_by_threepid( + existing_user_id = yield self.hs.get_datastore().get_user_id_by_threepid( "email", body["email"] ) - if existingUid is not None: + if existing_user_id is not None: raise SynapseError(400, "Email is already in use", Codes.THREEPID_IN_USE) - ret = yield self.identity_handler.requestEmailToken(**body) - return (200, ret) + if self.config.threepid_behaviour_email == ThreepidBehaviour.REMOTE: + assert self.hs.config.account_threepid_delegate_email + + # Have the configured identity server handle the request + ret = yield self.identity_handler.requestEmailToken( + self.hs.config.account_threepid_delegate_email, + email, + client_secret, + send_attempt, + next_link, + ) + else: + # Send registration emails from Synapse + sid = yield self.identity_handler.send_threepid_validation( + email, + client_secret, + send_attempt, + self.mailer.send_registration_mail, + next_link, + ) + + # Wrap the session id in a JSON object + ret = {"sid": sid} + + return 200, ret class MsisdnRegisterRequestTokenRestServlet(RestServlet): @@ -115,11 +180,15 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet): body = parse_json_object_from_request(request) assert_params_in_dict( - body, - ["id_server", "client_secret", "country", "phone_number", "send_attempt"], + body, ["client_secret", "country", "phone_number", "send_attempt"] ) + client_secret = body["client_secret"] + country = body["country"] + phone_number = body["phone_number"] + send_attempt = body["send_attempt"] + next_link = body.get("next_link") # Optional param - msisdn = phone_number_to_msisdn(body["country"], body["phone_number"]) + msisdn = phone_number_to_msisdn(country, phone_number) if not check_3pid_allowed(self.hs, "msisdn", msisdn): raise SynapseError( @@ -128,17 +197,118 @@ class MsisdnRegisterRequestTokenRestServlet(RestServlet): Codes.THREEPID_DENIED, ) - existingUid = yield self.hs.get_datastore().get_user_id_by_threepid( + existing_user_id = yield self.hs.get_datastore().get_user_id_by_threepid( "msisdn", msisdn ) - if existingUid is not None: + if existing_user_id is not None: raise SynapseError( 400, "Phone number is already in use", Codes.THREEPID_IN_USE ) - ret = yield self.identity_handler.requestMsisdnToken(**body) - return (200, ret) + if not self.hs.config.account_threepid_delegate_msisdn: + logger.warn( + "No upstream msisdn account_threepid_delegate configured on the server to " + "handle this request" + ) + raise SynapseError( + 400, "Registration by phone number is not supported on this homeserver" + ) + + ret = yield self.identity_handler.requestMsisdnToken( + self.hs.config.account_threepid_delegate_msisdn, + country, + phone_number, + client_secret, + send_attempt, + next_link, + ) + + return 200, ret + + +class RegistrationSubmitTokenServlet(RestServlet): + """Handles registration 3PID validation token submission""" + + PATTERNS = client_patterns( + "/registration/(?P<medium>[^/]*)/submit_token$", releases=(), unstable=True + ) + + def __init__(self, hs): + """ + Args: + hs (synapse.server.HomeServer): server + """ + super(RegistrationSubmitTokenServlet, self).__init__() + self.hs = hs + self.auth = hs.get_auth() + self.config = hs.config + self.clock = hs.get_clock() + self.store = hs.get_datastore() + + if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL: + self.failure_email_template, = load_jinja2_templates( + self.config.email_template_dir, + [self.config.email_registration_template_failure_html], + ) + + if self.config.threepid_behaviour_email == ThreepidBehaviour.LOCAL: + self.failure_email_template, = load_jinja2_templates( + self.config.email_template_dir, + [self.config.email_registration_template_failure_html], + ) + + @defer.inlineCallbacks + def on_GET(self, request, medium): + if medium != "email": + raise SynapseError( + 400, "This medium is currently not supported for registration" + ) + if self.config.threepid_behaviour_email == ThreepidBehaviour.OFF: + if self.config.local_threepid_handling_disabled_due_to_email_config: + logger.warn( + "User registration via email has been disabled due to lack of email config" + ) + raise SynapseError( + 400, "Email-based registration is disabled on this server" + ) + + sid = parse_string(request, "sid", required=True) + client_secret = parse_string(request, "client_secret", required=True) + token = parse_string(request, "token", required=True) + + # Attempt to validate a 3PID session + try: + # Mark the session as valid + next_link = yield self.store.validate_threepid_session( + sid, client_secret, token, self.clock.time_msec() + ) + + # Perform a 302 redirect if next_link is set + if next_link: + if next_link.startswith("file:///"): + logger.warn( + "Not redirecting to next_link as it is a local file: address" + ) + else: + request.setResponseCode(302) + request.setHeader("Location", next_link) + finish_request(request) + return None + + # Otherwise show the success template + html = self.config.email_registration_template_success_html_content + + request.setResponseCode(200) + except ThreepidValidationError as e: + request.setResponseCode(e.code) + + # Show a failure page with a reason + template_vars = {"failure_reason": e.msg} + html = self.failure_email_template.render(**template_vars) + + request.write(html.encode("utf-8")) + finish_request(request) class UsernameAvailabilityRestServlet(RestServlet): @@ -170,6 +340,11 @@ class UsernameAvailabilityRestServlet(RestServlet): @defer.inlineCallbacks def on_GET(self, request): + if not self.hs.config.enable_registration: + raise SynapseError( + 403, "Registration has been disabled", errcode=Codes.FORBIDDEN + ) + ip = self.hs.get_ip_from_request(request) with self.ratelimiter.ratelimit(ip) as wait_deferred: yield wait_deferred @@ -178,7 +353,7 @@ class UsernameAvailabilityRestServlet(RestServlet): yield self.registration_handler.check_username(username) - return (200, {"available": True}) + return 200, {"available": True} class RegisterRestServlet(RestServlet): @@ -202,6 +377,10 @@ class RegisterRestServlet(RestServlet): self.ratelimiter = hs.get_registration_ratelimiter() self.clock = hs.get_clock() + self._registration_flows = _calculate_registration_flows( + hs.config, self.auth_handler + ) + @interactive_auth_handler @defer.inlineCallbacks def on_POST(self, request): @@ -231,7 +410,6 @@ class RegisterRestServlet(RestServlet): if kind == b"guest": ret = yield self._do_guest_registration(body, address=client_addr) return ret - return elif kind != b"user": raise UnrecognizedRequestError( "Do not understand membership kind: %s" % (kind,) @@ -239,14 +417,12 @@ class RegisterRestServlet(RestServlet): # we do basic sanity checks here because the auth layer will store these # in sessions. Pull out the username/password provided to us. - desired_password = None if "password" in body: if ( not isinstance(body["password"], string_types) or len(body["password"]) > 512 ): raise SynapseError(400, "Invalid password") - desired_password = body["password"] desired_username = None if "username" in body: @@ -261,8 +437,8 @@ class RegisterRestServlet(RestServlet): if self.auth.has_access_token(request): appservice = yield self.auth.get_appservice_by_req(request) - # fork off as soon as possible for ASes and shared secret auth which - # have completely different registration flows to normal users + # fork off as soon as possible for ASes which have completely + # different registration flows to normal users # == Application Service Registration == if appservice: @@ -282,11 +458,10 @@ class RegisterRestServlet(RestServlet): result = yield self._do_appservice_registration( desired_username, access_token, body ) - return (200, result) # we throw for non 200 responses - return + return 200, result # we throw for non 200 responses - # for either shared secret or regular registration, downcase the - # provided username before attempting to register it. This should mean + # for regular registration, downcase the provided username before + # attempting to register it. This should mean # that people who try to register with upper-case in their usernames # don't get a nasty surprise. (Note that we treat username # case-insenstively in login, so they are free to carry on imagining @@ -294,16 +469,6 @@ class RegisterRestServlet(RestServlet): if desired_username is not None: desired_username = desired_username.lower() - # == Shared Secret Registration == (e.g. create new user scripts) - if "mac" in body: - # FIXME: Should we really be determining if this is shared secret - # auth based purely on the 'mac' key? - result = yield self._do_shared_secret_registration( - desired_username, desired_password, body - ) - return (200, result) # we throw for non 200 responses - return - # == Normal User Registration == (everyone else) if not self.hs.config.enable_registration: raise SynapseError(403, "Registration has been disabled") @@ -336,69 +501,8 @@ class RegisterRestServlet(RestServlet): assigned_user_id=registered_user_id, ) - # FIXME: need a better error than "no auth flow found" for scenarios - # where we required 3PID for registration but the user didn't give one - require_email = "email" in self.hs.config.registrations_require_3pid - require_msisdn = "msisdn" in self.hs.config.registrations_require_3pid - - show_msisdn = True - if self.hs.config.disable_msisdn_registration: - show_msisdn = False - require_msisdn = False - - flows = [] - if self.hs.config.enable_registration_captcha: - # only support 3PIDless registration if no 3PIDs are required - if not require_email and not require_msisdn: - # Also add a dummy flow here, otherwise if a client completes - # recaptcha first we'll assume they were going for this flow - # and complete the request, when they could have been trying to - # complete one of the flows with email/msisdn auth. - flows.extend([[LoginType.RECAPTCHA, LoginType.DUMMY]]) - # only support the email-only flow if we don't require MSISDN 3PIDs - if not require_msisdn: - flows.extend([[LoginType.RECAPTCHA, LoginType.EMAIL_IDENTITY]]) - - if show_msisdn: - # only support the MSISDN-only flow if we don't require email 3PIDs - if not require_email: - flows.extend([[LoginType.RECAPTCHA, LoginType.MSISDN]]) - # always let users provide both MSISDN & email - flows.extend( - [[LoginType.RECAPTCHA, LoginType.MSISDN, LoginType.EMAIL_IDENTITY]] - ) - else: - # only support 3PIDless registration if no 3PIDs are required - if not require_email and not require_msisdn: - flows.extend([[LoginType.DUMMY]]) - # only support the email-only flow if we don't require MSISDN 3PIDs - if not require_msisdn: - flows.extend([[LoginType.EMAIL_IDENTITY]]) - - if show_msisdn: - # only support the MSISDN-only flow if we don't require email 3PIDs - if not require_email or require_msisdn: - flows.extend([[LoginType.MSISDN]]) - # always let users provide both MSISDN & email - flows.extend([[LoginType.MSISDN, LoginType.EMAIL_IDENTITY]]) - - # Append m.login.terms to all flows if we're requiring consent - if self.hs.config.user_consent_at_registration: - new_flows = [] - for flow in flows: - inserted = False - # m.login.terms should go near the end but before msisdn or email auth - for i, stage in enumerate(flow): - if stage == LoginType.EMAIL_IDENTITY or stage == LoginType.MSISDN: - flow.insert(i, LoginType.TERMS) - inserted = True - break - if not inserted: - flow.append(LoginType.TERMS) - flows.extend(new_flows) - auth_result, params, session_id = yield self.auth_handler.check_auth( - flows, body, self.hs.get_ip_from_request(request) + self._registration_flows, body, self.hs.get_ip_from_request(request) ) # Check that we're not trying to register a denied 3pid. @@ -453,11 +557,11 @@ class RegisterRestServlet(RestServlet): medium = auth_result[login_type]["medium"] address = auth_result[login_type]["address"] - existingUid = yield self.store.get_user_id_by_threepid( + existing_user_id = yield self.store.get_user_id_by_threepid( medium, address ) - if existingUid is not None: + if existing_user_id is not None: raise SynapseError( 400, "%s is already in use" % medium, @@ -496,11 +600,9 @@ class RegisterRestServlet(RestServlet): user_id=registered_user_id, auth_result=auth_result, access_token=return_dict.get("access_token"), - bind_email=params.get("bind_email"), - bind_msisdn=params.get("bind_msisdn"), ) - return (200, return_dict) + return 200, return_dict def on_OPTIONS(self, _): return 200, {} @@ -513,42 +615,6 @@ class RegisterRestServlet(RestServlet): return (yield self._create_registration_details(user_id, body)) @defer.inlineCallbacks - def _do_shared_secret_registration(self, username, password, body): - if not self.hs.config.registration_shared_secret: - raise SynapseError(400, "Shared secret registration is not enabled") - if not username: - raise SynapseError( - 400, "username must be specified", errcode=Codes.BAD_JSON - ) - - # use the username from the original request rather than the - # downcased one in `username` for the mac calculation - user = body["username"].encode("utf-8") - - # str() because otherwise hmac complains that 'unicode' does not - # have the buffer interface - got_mac = str(body["mac"]) - - # FIXME this is different to the /v1/register endpoint, which - # includes the password and admin flag in the hashed text. Why are - # these different? - want_mac = hmac.new( - key=self.hs.config.registration_shared_secret.encode(), - msg=user, - digestmod=sha1, - ).hexdigest() - - if not compare_digest(want_mac, got_mac): - raise SynapseError(403, "HMAC incorrect") - - user_id = yield self.registration_handler.register_user( - localpart=username, password=password - ) - - result = yield self._create_registration_details(user_id, body) - return result - - @defer.inlineCallbacks def _create_registration_details(self, user_id, params): """Complete registration of newly-registered user @@ -599,8 +665,86 @@ class RegisterRestServlet(RestServlet): ) +def _calculate_registration_flows( + # technically `config` has to provide *all* of these interfaces, not just one + config: Union[RegistrationConfig, ConsentConfig, CaptchaConfig], + auth_handler: AuthHandler, +) -> List[List[str]]: + """Get a suitable flows list for registration + + Args: + config: server configuration + auth_handler: authorization handler + + Returns: a list of supported flows + """ + # FIXME: need a better error than "no auth flow found" for scenarios + # where we required 3PID for registration but the user didn't give one + require_email = "email" in config.registrations_require_3pid + require_msisdn = "msisdn" in config.registrations_require_3pid + + show_msisdn = True + show_email = True + + if config.disable_msisdn_registration: + show_msisdn = False + require_msisdn = False + + enabled_auth_types = auth_handler.get_enabled_auth_types() + if LoginType.EMAIL_IDENTITY not in enabled_auth_types: + show_email = False + if require_email: + raise ConfigError( + "Configuration requires email address at registration, but email " + "validation is not configured" + ) + + if LoginType.MSISDN not in enabled_auth_types: + show_msisdn = False + if require_msisdn: + raise ConfigError( + "Configuration requires msisdn at registration, but msisdn " + "validation is not configured" + ) + + flows = [] + + # only support 3PIDless registration if no 3PIDs are required + if not require_email and not require_msisdn: + # Add a dummy step here, otherwise if a client completes + # recaptcha first we'll assume they were going for this flow + # and complete the request, when they could have been trying to + # complete one of the flows with email/msisdn auth. + flows.append([LoginType.DUMMY]) + + # only support the email-only flow if we don't require MSISDN 3PIDs + if show_email and not require_msisdn: + flows.append([LoginType.EMAIL_IDENTITY]) + + # only support the MSISDN-only flow if we don't require email 3PIDs + if show_msisdn and not require_email: + flows.append([LoginType.MSISDN]) + + if show_email and show_msisdn: + # always let users provide both MSISDN & email + flows.append([LoginType.MSISDN, LoginType.EMAIL_IDENTITY]) + + # Prepend m.login.terms to all flows if we're requiring consent + if config.user_consent_at_registration: + for flow in flows: + flow.insert(0, LoginType.TERMS) + + # Prepend recaptcha to all flows if we're requiring captcha + if config.enable_registration_captcha: + for flow in flows: + flow.insert(0, LoginType.RECAPTCHA) + + return flows + + def register_servlets(hs, http_server): EmailRegisterRequestTokenRestServlet(hs).register(http_server) MsisdnRegisterRequestTokenRestServlet(hs).register(http_server) UsernameAvailabilityRestServlet(hs).register(http_server) + RegistrationSubmitTokenServlet(hs).register(http_server) RegisterRestServlet(hs).register(http_server) |