From 20f0617e87924c929f0db0c06d30de0c8d15081c Mon Sep 17 00:00:00 2001 From: Brendan Abolivier Date: Wed, 10 Apr 2019 17:58:47 +0100 Subject: Send out emails with links to extend an account's validity period --- synapse/handlers/account_validity.py | 228 +++++++++++++++++++++++++++++++++++ 1 file changed, 228 insertions(+) create mode 100644 synapse/handlers/account_validity.py (limited to 'synapse/handlers/account_validity.py') diff --git a/synapse/handlers/account_validity.py b/synapse/handlers/account_validity.py new file mode 100644 index 0000000000..e82049e42d --- /dev/null +++ b/synapse/handlers/account_validity.py @@ -0,0 +1,228 @@ +# -*- coding: utf-8 -*- +# Copyright 2019 New Vector Ltd +# +# Licensed under the Apache License, Version 2.0 (the "License"); +# you may not use this file except in compliance with the License. +# You may obtain a copy of the License at +# +# http://www.apache.org/licenses/LICENSE-2.0 +# +# Unless required by applicable law or agreed to in writing, software +# distributed under the License is distributed on an "AS IS" BASIS, +# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. +# See the License for the specific language governing permissions and +# limitations under the License. + +import email.mime.multipart +import email.utils +import logging +from email.mime.multipart import MIMEMultipart +from email.mime.text import MIMEText + +from twisted.internet import defer + +from synapse.api.errors import StoreError +from synapse.types import UserID +from synapse.util import stringutils +from synapse.util.logcontext import make_deferred_yieldable + +try: + from synapse.push.mailer import load_jinja2_templates +except ImportError: + load_jinja2_templates = None + +logger = logging.getLogger(__name__) + + +class AccountValidityHandler(object): + def __init__(self, hs): + self.hs = hs + self.store = self.hs.get_datastore() + self.sendmail = self.hs.get_sendmail() + self.clock = self.hs.get_clock() + + self._account_validity = self.hs.config.account_validity + + if self._account_validity.renew_by_email_enabled and load_jinja2_templates: + # Don't do email-specific configuration if renewal by email is disabled. + try: + app_name = self.hs.config.email_app_name + + self._subject = self._account_validity.renew_email_subject % { + "app": app_name, + } + + self._from_string = self.hs.config.email_notif_from % { + "app": app_name, + } + except Exception: + # If substitution failed, fall back to the bare strings. + self._subject = self._account_validity.renew_email_subject + self._from_string = self.hs.config.email_notif_from + + self._raw_from = email.utils.parseaddr(self._from_string)[1] + + self._template_html, self._template_text = load_jinja2_templates( + config=self.hs.config, + template_html_name=self.hs.config.email_expiry_template_html, + template_text_name=self.hs.config.email_expiry_template_text, + ) + + # Check the renewal emails to send and send them every 30min. + self.clock.looping_call( + self.send_renewal_emails, + 30 * 60 * 1000, + ) + + @defer.inlineCallbacks + def send_renewal_emails(self): + """Gets the list of users whose account is expiring in the amount of time + configured in the ``renew_at`` parameter from the ``account_validity`` + configuration, and sends renewal emails to all of these users as long as they + have an email 3PID attached to their account. + """ + expiring_users = yield self.store.get_users_expiring_soon() + + if expiring_users: + for user in expiring_users: + yield self._send_renewal_email( + user_id=user["user_id"], + expiration_ts=user["expiration_ts_ms"], + ) + + @defer.inlineCallbacks + def _send_renewal_email(self, user_id, expiration_ts): + """Sends out a renewal email to every email address attached to the given user + with a unique link allowing them to renew their account. + + Args: + user_id (str): ID of the user to send email(s) to. + expiration_ts (int): Timestamp in milliseconds for the expiration date of + this user's account (used in the email templates). + """ + addresses = yield self._get_email_addresses_for_user(user_id) + + # Stop right here if the user doesn't have at least one email address. + # In this case, they will have to ask their server admin to renew their + # account manually. + if not addresses: + return + + try: + user_display_name = yield self.store.get_profile_displayname( + UserID.from_string(user_id).localpart + ) + if user_display_name is None: + user_display_name = user_id + except StoreError: + user_display_name = user_id + + renewal_token = yield self._get_renewal_token(user_id) + url = "%s_matrix/client/unstable/account_validity/renew?token=%s" % ( + self.hs.config.public_baseurl, + renewal_token, + ) + + template_vars = { + "display_name": user_display_name, + "expiration_ts": expiration_ts, + "url": url, + } + + html_text = self._template_html.render(**template_vars) + html_part = MIMEText(html_text, "html", "utf8") + + plain_text = self._template_text.render(**template_vars) + text_part = MIMEText(plain_text, "plain", "utf8") + + for address in addresses: + raw_to = email.utils.parseaddr(address)[1] + + multipart_msg = MIMEMultipart('alternative') + multipart_msg['Subject'] = self._subject + multipart_msg['From'] = self._from_string + multipart_msg['To'] = address + multipart_msg['Date'] = email.utils.formatdate() + multipart_msg['Message-ID'] = email.utils.make_msgid() + multipart_msg.attach(text_part) + multipart_msg.attach(html_part) + + logger.info("Sending renewal email to %s", address) + + yield make_deferred_yieldable(self.sendmail( + self.hs.config.email_smtp_host, + self._raw_from, raw_to, multipart_msg.as_string().encode('utf8'), + reactor=self.hs.get_reactor(), + port=self.hs.config.email_smtp_port, + requireAuthentication=self.hs.config.email_smtp_user is not None, + username=self.hs.config.email_smtp_user, + password=self.hs.config.email_smtp_pass, + requireTransportSecurity=self.hs.config.require_transport_security + )) + + yield self.store.set_renewal_mail_status( + user_id=user_id, + email_sent=True, + ) + + @defer.inlineCallbacks + def _get_email_addresses_for_user(self, user_id): + """Retrieve the list of email addresses attached to a user's account. + + Args: + user_id (str): ID of the user to lookup email addresses for. + + Returns: + defer.Deferred[list[str]]: Email addresses for this account. + """ + threepids = yield self.store.user_get_threepids(user_id) + + addresses = [] + for threepid in threepids: + if threepid["medium"] == "email": + addresses.append(threepid["address"]) + + defer.returnValue(addresses) + + @defer.inlineCallbacks + def _get_renewal_token(self, user_id): + """Generates a 32-byte long random string that will be inserted into the + user's renewal email's unique link, then saves it into the database. + + Args: + user_id (str): ID of the user to generate a string for. + + Returns: + defer.Deferred[str]: The generated string. + + Raises: + StoreError(500): Couldn't generate a unique string after 5 attempts. + """ + attempts = 0 + while attempts < 5: + try: + renewal_token = stringutils.random_string(32) + yield self.store.set_renewal_token_for_user(user_id, renewal_token) + defer.returnValue(renewal_token) + except StoreError: + attempts += 1 + raise StoreError(500, "Couldn't generate a unique string as refresh string.") + + @defer.inlineCallbacks + def renew_account(self, renewal_token): + """Renews the account attached to a given renewal token by pushing back the + expiration date by the current validity period in the server's configuration. + + Args: + renewal_token (str): Token sent with the renewal request. + """ + user_id = yield self.store.get_user_from_renewal_token(renewal_token) + + logger.debug("Renewing an account for user %s", user_id) + + new_expiration_date = self.clock.time_msec() + self._account_validity.period + + yield self.store.renew_account_for_user( + user_id=user_id, + new_expiration_ts=new_expiration_date, + ) -- cgit 1.5.1 From eaf41a943b2cd3f7f32d142c9552d558eb37a074 Mon Sep 17 00:00:00 2001 From: Brendan Abolivier Date: Tue, 16 Apr 2019 20:13:59 +0100 Subject: Add management endpoints for account validity --- changelog.d/5073.feature | 1 + docs/admin_api/account_validity.rst | 42 +++++++++++ synapse/api/auth.py | 2 +- synapse/handlers/account_validity.py | 33 +++++++- synapse/rest/client/v1/admin.py | 39 ++++++++++ synapse/rest/client/v2_alpha/account_validity.py | 31 +++++++- synapse/storage/registration.py | 29 +++++--- tests/rest/client/v2_alpha/test_register.py | 95 ++++++++++++++++++++++-- 8 files changed, 246 insertions(+), 26 deletions(-) create mode 100644 changelog.d/5073.feature create mode 100644 docs/admin_api/account_validity.rst (limited to 'synapse/handlers/account_validity.py') diff --git a/changelog.d/5073.feature b/changelog.d/5073.feature new file mode 100644 index 0000000000..12766a82a7 --- /dev/null +++ b/changelog.d/5073.feature @@ -0,0 +1 @@ +Add time-based account expiration. diff --git a/docs/admin_api/account_validity.rst b/docs/admin_api/account_validity.rst new file mode 100644 index 0000000000..980ea23605 --- /dev/null +++ b/docs/admin_api/account_validity.rst @@ -0,0 +1,42 @@ +Account validity API +==================== + +This API allows a server administrator to manage the validity of an account. To +use it, you must enable the account validity feature (under +``account_validity``) in Synapse's configuration. + +Renew account +------------- + +This API extends the validity of an account by as much time as configured in the +``period`` parameter from the ``account_validity`` configuration. + +The API is:: + + POST /_matrix/client/unstable/account_validity/send_mail + +with the following body: + +.. code:: json + + { + "user_id": "", + "expiration_ts": 0, + "enable_renewal_emails": true + } + + +``expiration_ts`` is an optional parameter and overrides the expiration date, +which otherwise defaults to now + validity period. + +``enable_renewal_emails`` is also an optional parameter and enables/disables +sending renewal emails to the user. Defaults to true. + +The API returns with the new expiration date for this account, as a timestamp in +milliseconds since epoch: + +.. code:: json + + { + "expiration_ts": 0 + } diff --git a/synapse/api/auth.py b/synapse/api/auth.py index 4482962510..960e66dbdc 100644 --- a/synapse/api/auth.py +++ b/synapse/api/auth.py @@ -232,7 +232,7 @@ class Auth(object): if self._account_validity.enabled: user_id = user.to_string() expiration_ts = yield self.store.get_expiration_ts_for_user(user_id) - if expiration_ts and self.clock.time_msec() >= expiration_ts: + if expiration_ts is not None and self.clock.time_msec() >= expiration_ts: raise AuthError( 403, "User account has expired", diff --git a/synapse/handlers/account_validity.py b/synapse/handlers/account_validity.py index e82049e42d..261446517d 100644 --- a/synapse/handlers/account_validity.py +++ b/synapse/handlers/account_validity.py @@ -90,6 +90,11 @@ class AccountValidityHandler(object): expiration_ts=user["expiration_ts_ms"], ) + @defer.inlineCallbacks + def send_renewal_email_to_user(self, user_id): + expiration_ts = yield self.store.get_expiration_ts_for_user(user_id) + yield self._send_renewal_email(user_id, expiration_ts) + @defer.inlineCallbacks def _send_renewal_email(self, user_id, expiration_ts): """Sends out a renewal email to every email address attached to the given user @@ -217,12 +222,32 @@ class AccountValidityHandler(object): renewal_token (str): Token sent with the renewal request. """ user_id = yield self.store.get_user_from_renewal_token(renewal_token) - logger.debug("Renewing an account for user %s", user_id) + yield self.renew_account_for_user(user_id) - new_expiration_date = self.clock.time_msec() + self._account_validity.period + @defer.inlineCallbacks + def renew_account_for_user(self, user_id, expiration_ts=None, email_sent=False): + """Renews the account attached to a given user by pushing back the + expiration date by the current validity period in the server's + configuration. - yield self.store.renew_account_for_user( + Args: + renewal_token (str): Token sent with the renewal request. + expiration_ts (int): New expiration date. Defaults to now + validity period. + email_sent (bool): Whether an email has been sent for this validity period. + Defaults to False. + + Returns: + defer.Deferred[int]: New expiration date for this account, as a timestamp + in milliseconds since epoch. + """ + if expiration_ts is None: + expiration_ts = self.clock.time_msec() + self._account_validity.period + + yield self.store.set_account_validity_for_user( user_id=user_id, - new_expiration_ts=new_expiration_date, + expiration_ts=expiration_ts, + email_sent=email_sent, ) + + defer.returnValue(expiration_ts) diff --git a/synapse/rest/client/v1/admin.py b/synapse/rest/client/v1/admin.py index e788769639..d27472c538 100644 --- a/synapse/rest/client/v1/admin.py +++ b/synapse/rest/client/v1/admin.py @@ -786,6 +786,44 @@ class SearchUsersRestServlet(ClientV1RestServlet): defer.returnValue((200, ret)) +class AccountValidityRenewServlet(ClientV1RestServlet): + PATTERNS = client_path_patterns("/admin/account_validity/validity$") + + def __init__(self, hs): + """ + Args: + hs (synapse.server.HomeServer): server + """ + super(AccountValidityRenewServlet, self).__init__(hs) + + self.hs = hs + self.account_activity_handler = hs.get_account_validity_handler() + self.auth = hs.get_auth() + + @defer.inlineCallbacks + def on_POST(self, request): + requester = yield self.auth.get_user_by_req(request) + is_admin = yield self.auth.is_server_admin(requester.user) + + if not is_admin: + raise AuthError(403, "You are not a server admin") + + body = parse_json_object_from_request(request) + + if "user_id" not in body: + raise SynapseError(400, "Missing property 'user_id' in the request body") + + expiration_ts = yield self.account_activity_handler.renew_account_for_user( + body["user_id"], body.get("expiration_ts"), + not body.get("enable_renewal_emails", True), + ) + + res = { + "expiration_ts": expiration_ts, + } + defer.returnValue((200, res)) + + def register_servlets(hs, http_server): WhoisRestServlet(hs).register(http_server) PurgeMediaCacheRestServlet(hs).register(http_server) @@ -801,3 +839,4 @@ def register_servlets(hs, http_server): ListMediaInRoom(hs).register(http_server) UserRegisterServlet(hs).register(http_server) VersionServlet(hs).register(http_server) + AccountValidityRenewServlet(hs).register(http_server) diff --git a/synapse/rest/client/v2_alpha/account_validity.py b/synapse/rest/client/v2_alpha/account_validity.py index 1ff6a6b638..fc8dbeb617 100644 --- a/synapse/rest/client/v2_alpha/account_validity.py +++ b/synapse/rest/client/v2_alpha/account_validity.py @@ -17,7 +17,7 @@ import logging from twisted.internet import defer -from synapse.api.errors import SynapseError +from synapse.api.errors import AuthError, SynapseError from synapse.http.server import finish_request from synapse.http.servlet import RestServlet @@ -39,6 +39,7 @@ class AccountValidityRenewServlet(RestServlet): self.hs = hs self.account_activity_handler = hs.get_account_validity_handler() + self.auth = hs.get_auth() @defer.inlineCallbacks def on_GET(self, request): @@ -58,5 +59,33 @@ class AccountValidityRenewServlet(RestServlet): defer.returnValue(None) +class AccountValiditySendMailServlet(RestServlet): + PATTERNS = client_v2_patterns("/account_validity/send_mail$") + + def __init__(self, hs): + """ + Args: + hs (synapse.server.HomeServer): server + """ + super(AccountValiditySendMailServlet, self).__init__() + + self.hs = hs + self.account_activity_handler = hs.get_account_validity_handler() + self.auth = hs.get_auth() + self.account_validity = self.hs.config.account_validity + + @defer.inlineCallbacks + def on_POST(self, request): + if not self.account_validity.renew_by_email_enabled: + raise AuthError(403, "Account renewal via email is disabled on this server.") + + requester = yield self.auth.get_user_by_req(request) + user_id = requester.user.to_string() + yield self.account_activity_handler.send_renewal_email_to_user(user_id) + + defer.returnValue((200, {})) + + def register_servlets(hs, http_server): AccountValidityRenewServlet(hs).register(http_server) + AccountValiditySendMailServlet(hs).register(http_server) diff --git a/synapse/storage/registration.py b/synapse/storage/registration.py index a78850259f..dfdb4e7e34 100644 --- a/synapse/storage/registration.py +++ b/synapse/storage/registration.py @@ -108,25 +108,30 @@ class RegistrationWorkerStore(SQLBaseStore): defer.returnValue(res) @defer.inlineCallbacks - def renew_account_for_user(self, user_id, new_expiration_ts): - """Updates the account validity table with a new timestamp for a given - user, removes the existing renewal token from this user, and unsets the - flag indicating that an email has been sent for renewing this account. + def set_account_validity_for_user(self, user_id, expiration_ts, email_sent, + renewal_token=None): + """Updates the account validity properties of the given account, with the + given values. Args: - user_id (str): ID of the user whose account validity to renew. - new_expiration_ts: New expiration date, as a timestamp in milliseconds + user_id (str): ID of the account to update properties for. + expiration_ts (int): New expiration date, as a timestamp in milliseconds since epoch. + email_sent (bool): True means a renewal email has been sent for this + account and there's no need to send another one for the current validity + period. + renewal_token (str): Renewal token the user can use to extend the validity + of their account. Defaults to no token. """ - def renew_account_for_user_txn(txn): + def set_account_validity_for_user_txn(txn): self._simple_update_txn( txn=txn, table="account_validity", keyvalues={"user_id": user_id}, updatevalues={ - "expiration_ts_ms": new_expiration_ts, - "email_sent": False, - "renewal_token": None, + "expiration_ts_ms": expiration_ts, + "email_sent": email_sent, + "renewal_token": renewal_token, }, ) self._invalidate_cache_and_stream( @@ -134,8 +139,8 @@ class RegistrationWorkerStore(SQLBaseStore): ) yield self.runInteraction( - "renew_account_for_user", - renew_account_for_user_txn, + "set_account_validity_for_user", + set_account_validity_for_user_txn, ) @defer.inlineCallbacks diff --git a/tests/rest/client/v2_alpha/test_register.py b/tests/rest/client/v2_alpha/test_register.py index 8fb5140a05..3d44667489 100644 --- a/tests/rest/client/v2_alpha/test_register.py +++ b/tests/rest/client/v2_alpha/test_register.py @@ -201,6 +201,7 @@ class AccountValidityTestCase(unittest.HomeserverTestCase): admin.register_servlets, login.register_servlets, sync.register_servlets, + account_validity.register_servlets, ] def make_homeserver(self, reactor, clock): @@ -238,6 +239,68 @@ class AccountValidityTestCase(unittest.HomeserverTestCase): channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result, ) + def test_manual_renewal(self): + user_id = self.register_user("kermit", "monkey") + tok = self.login("kermit", "monkey") + + self.reactor.advance(datetime.timedelta(weeks=1).total_seconds()) + + # If we register the admin user at the beginning of the test, it will + # expire at the same time as the normal user and the renewal request + # will be denied. + self.register_user("admin", "adminpassword", admin=True) + admin_tok = self.login("admin", "adminpassword") + + url = "/_matrix/client/unstable/admin/account_validity/validity" + params = { + "user_id": user_id, + } + request_data = json.dumps(params) + request, channel = self.make_request( + b"POST", url, request_data, access_token=admin_tok, + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + # The specific endpoint doesn't matter, all we need is an authenticated + # endpoint. + request, channel = self.make_request( + b"GET", "/sync", access_token=tok, + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + def test_manual_expire(self): + user_id = self.register_user("kermit", "monkey") + tok = self.login("kermit", "monkey") + + self.register_user("admin", "adminpassword", admin=True) + admin_tok = self.login("admin", "adminpassword") + + url = "/_matrix/client/unstable/admin/account_validity/validity" + params = { + "user_id": user_id, + "expiration_ts": 0, + "enable_renewal_emails": False, + } + request_data = json.dumps(params) + request, channel = self.make_request( + b"POST", url, request_data, access_token=admin_tok, + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + # The specific endpoint doesn't matter, all we need is an authenticated + # endpoint. + request, channel = self.make_request( + b"GET", "/sync", access_token=tok, + ) + self.render(request) + self.assertEquals(channel.result["code"], b"403", channel.result) + self.assertEquals( + channel.json_body["errcode"], Codes.EXPIRED_ACCOUNT, channel.result, + ) + class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase): @@ -287,6 +350,8 @@ class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase): return self.hs def test_renewal_email(self): + self.email_attempts = [] + user_id = self.register_user("kermit", "monkey") tok = self.login("kermit", "monkey") # We need to manually add an email address otherwise the handler will do @@ -297,14 +362,6 @@ class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase): validated_at=now, added_at=now, )) - # The specific endpoint doesn't matter, all we need is an authenticated - # endpoint. - request, channel = self.make_request( - b"GET", "/sync", access_token=tok, - ) - self.render(request) - self.assertEquals(channel.result["code"], b"200", channel.result) - # Move 6 days forward. This should trigger a renewal email to be sent. self.reactor.advance(datetime.timedelta(days=6).total_seconds()) self.assertEqual(len(self.email_attempts), 1) @@ -326,3 +383,25 @@ class AccountValidityRenewalByEmailTestCase(unittest.HomeserverTestCase): ) self.render(request) self.assertEquals(channel.result["code"], b"200", channel.result) + + def test_manual_email_send(self): + self.email_attempts = [] + + user_id = self.register_user("kermit", "monkey") + tok = self.login("kermit", "monkey") + # We need to manually add an email address otherwise the handler will do + # nothing. + now = self.hs.clock.time_msec() + self.get_success(self.store.user_add_threepid( + user_id=user_id, medium="email", address="kermit@example.com", + validated_at=now, added_at=now, + )) + + request, channel = self.make_request( + b"POST", "/_matrix/client/unstable/account_validity/send_mail", + access_token=tok, + ) + self.render(request) + self.assertEquals(channel.result["code"], b"200", channel.result) + + self.assertEqual(len(self.email_attempts), 1) -- cgit 1.5.1