diff options
Diffstat (limited to 'synapse/handlers/auth.py')
| -rw-r--r-- | synapse/handlers/auth.py | 82 |
1 files changed, 73 insertions, 9 deletions
diff --git a/synapse/handlers/auth.py b/synapse/handlers/auth.py index 602c5bcd89..793b3fcd8b 100644 --- a/synapse/handlers/auth.py +++ b/synapse/handlers/auth.py @@ -19,13 +19,13 @@ from ._base import BaseHandler from synapse.api.constants import LoginType from synapse.types import UserID from synapse.api.errors import LoginError, Codes -from synapse.http.client import SimpleHttpClient from synapse.util.async import run_on_reactor from twisted.web.client import PartialDownloadError import logging import bcrypt +import pymacaroons import simplejson import synapse.util.stringutils as stringutils @@ -186,7 +186,7 @@ class AuthHandler(BaseHandler): # TODO: get this from the homeserver rather than creating a new one for # each request try: - client = SimpleHttpClient(self.hs) + client = self.hs.get_simple_http_client() resp_body = yield client.post_urlencoded_get_json( self.hs.config.recaptcha_siteverify_api, args={ @@ -279,7 +279,10 @@ class AuthHandler(BaseHandler): user_id (str): User ID password (str): Password Returns: - The access token for the user's session. + A tuple of: + The user's ID. + The access token for the user's session. + The refresh token for the user's session. Raises: StoreError if there was a problem storing the token. LoginError if there was an authentication problem. @@ -287,11 +290,10 @@ class AuthHandler(BaseHandler): user_id, password_hash = yield self._find_user_id_and_pwd_hash(user_id) self._check_password(user_id, password, password_hash) - reg_handler = self.hs.get_handlers().registration_handler - access_token = reg_handler.generate_token(user_id) logger.info("Logging in user %s", user_id) - yield self.store.add_access_token_to_user(user_id, access_token) - defer.returnValue((user_id, access_token)) + access_token = yield self.issue_access_token(user_id) + refresh_token = yield self.issue_refresh_token(user_id) + defer.returnValue((user_id, access_token, refresh_token)) @defer.inlineCallbacks def _find_user_id_and_pwd_hash(self, user_id): @@ -321,13 +323,52 @@ class AuthHandler(BaseHandler): def _check_password(self, user_id, password, stored_hash): """Checks that user_id has passed password, raises LoginError if not.""" - if not bcrypt.checkpw(password, stored_hash): + if not self.validate_hash(password, stored_hash): logger.warn("Failed password login for user %s", user_id) raise LoginError(403, "", errcode=Codes.FORBIDDEN) @defer.inlineCallbacks + def issue_access_token(self, user_id): + access_token = self.generate_access_token(user_id) + yield self.store.add_access_token_to_user(user_id, access_token) + defer.returnValue(access_token) + + @defer.inlineCallbacks + def issue_refresh_token(self, user_id): + refresh_token = self.generate_refresh_token(user_id) + yield self.store.add_refresh_token_to_user(user_id, refresh_token) + defer.returnValue(refresh_token) + + def generate_access_token(self, user_id): + macaroon = self._generate_base_macaroon(user_id) + macaroon.add_first_party_caveat("type = access") + now = self.hs.get_clock().time_msec() + expiry = now + (60 * 60 * 1000) + macaroon.add_first_party_caveat("time < %d" % (expiry,)) + return macaroon.serialize() + + def generate_refresh_token(self, user_id): + m = self._generate_base_macaroon(user_id) + m.add_first_party_caveat("type = refresh") + # Important to add a nonce, because otherwise every refresh token for a + # user will be the same. + m.add_first_party_caveat("nonce = %s" % ( + stringutils.random_string_with_symbols(16), + )) + return m.serialize() + + def _generate_base_macaroon(self, user_id): + macaroon = pymacaroons.Macaroon( + location=self.hs.config.server_name, + identifier="key", + key=self.hs.config.macaroon_secret_key) + macaroon.add_first_party_caveat("gen = 1") + macaroon.add_first_party_caveat("user_id = %s" % (user_id,)) + return macaroon + + @defer.inlineCallbacks def set_password(self, user_id, newpassword): - password_hash = bcrypt.hashpw(newpassword, bcrypt.gensalt()) + password_hash = self.hash(newpassword) yield self.store.user_set_password_hash(user_id, password_hash) yield self.store.user_delete_access_tokens(user_id) @@ -349,3 +390,26 @@ class AuthHandler(BaseHandler): def _remove_session(self, session): logger.debug("Removing session %s", session) del self.sessions[session["id"]] + + def hash(self, password): + """Computes a secure hash of password. + + Args: + password (str): Password to hash. + + Returns: + Hashed password (str). + """ + return bcrypt.hashpw(password, bcrypt.gensalt()) + + def validate_hash(self, password, stored_hash): + """Validates that self.hash(password) == stored_hash. + + Args: + password (str): Password to hash. + stored_hash (str): Expected hash value. + + Returns: + Whether self.hash(password) == stored_hash (bool). + """ + return bcrypt.checkpw(password, stored_hash) |