Fix setting a user's external_id via the admin API returns 500 and deletes users existing external mappings if that external ID is already mapped (#11051)

Fixes #10846
This commit is contained in:
Dirk Klimpel 2021-10-21 10:52:32 +02:00 committed by GitHub
parent 57501d9194
commit ef7fe09778
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4 changed files with 321 additions and 37 deletions

1
changelog.d/11051.bugfix Normal file
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@ -0,0 +1 @@
Fix a bug where setting a user's external_id via the admin API returns 500 and deletes users existing external mappings if that external ID is already mapped.

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@ -35,6 +35,7 @@ from synapse.rest.admin._base import (
assert_user_is_admin,
)
from synapse.rest.client._base import client_patterns
from synapse.storage.databases.main.registration import ExternalIDReuseException
from synapse.storage.databases.main.stats import UserSortOrder
from synapse.types import JsonDict, UserID
@ -228,12 +229,12 @@ class UserRestServletV2(RestServlet):
if not isinstance(deactivate, bool):
raise SynapseError(400, "'deactivated' parameter is not of type boolean")
# convert List[Dict[str, str]] into Set[Tuple[str, str]]
# convert List[Dict[str, str]] into List[Tuple[str, str]]
if external_ids is not None:
new_external_ids = {
new_external_ids = [
(external_id["auth_provider"], external_id["external_id"])
for external_id in external_ids
}
]
# convert List[Dict[str, str]] into Set[Tuple[str, str]]
if threepids is not None:
@ -275,28 +276,13 @@ class UserRestServletV2(RestServlet):
)
if external_ids is not None:
# get changed external_ids (added and removed)
cur_external_ids = set(
await self.store.get_external_ids_by_user(user_id)
)
add_external_ids = new_external_ids - cur_external_ids
del_external_ids = cur_external_ids - new_external_ids
# remove old external_ids
for auth_provider, external_id in del_external_ids:
await self.store.remove_user_external_id(
auth_provider,
external_id,
user_id,
)
# add new external_ids
for auth_provider, external_id in add_external_ids:
await self.store.record_user_external_id(
auth_provider,
external_id,
try:
await self.store.replace_user_external_id(
new_external_ids,
user_id,
)
except ExternalIDReuseException:
raise SynapseError(409, "External id is already in use.")
if "avatar_url" in body and isinstance(body["avatar_url"], str):
await self.profile_handler.set_avatar_url(
@ -384,12 +370,15 @@ class UserRestServletV2(RestServlet):
)
if external_ids is not None:
try:
for auth_provider, external_id in new_external_ids:
await self.store.record_user_external_id(
auth_provider,
external_id,
user_id,
)
except ExternalIDReuseException:
raise SynapseError(409, "External id is already in use.")
if "avatar_url" in body and isinstance(body["avatar_url"], str):
await self.profile_handler.set_avatar_url(

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@ -23,7 +23,11 @@ import attr
from synapse.api.constants import UserTypes
from synapse.api.errors import Codes, StoreError, SynapseError, ThreepidValidationError
from synapse.metrics.background_process_metrics import wrap_as_background_process
from synapse.storage.database import DatabasePool, LoggingDatabaseConnection
from synapse.storage.database import (
DatabasePool,
LoggingDatabaseConnection,
LoggingTransaction,
)
from synapse.storage.databases.main.cache import CacheInvalidationWorkerStore
from synapse.storage.databases.main.stats import StatsStore
from synapse.storage.types import Cursor
@ -40,6 +44,13 @@ THIRTY_MINUTES_IN_MS = 30 * 60 * 1000
logger = logging.getLogger(__name__)
class ExternalIDReuseException(Exception):
"""Exception if writing an external id for a user fails,
because this external id is given to an other user."""
pass
@attr.s(frozen=True, slots=True)
class TokenLookupResult:
"""Result of looking up an access token.
@ -588,24 +599,44 @@ class RegistrationWorkerStore(CacheInvalidationWorkerStore):
auth_provider: identifier for the remote auth provider
external_id: id on that system
user_id: complete mxid that it is mapped to
Raises:
ExternalIDReuseException if the new external_id could not be mapped.
"""
await self.db_pool.simple_insert(
try:
await self.db_pool.runInteraction(
"record_user_external_id",
self._record_user_external_id_txn,
auth_provider,
external_id,
user_id,
)
except self.database_engine.module.IntegrityError:
raise ExternalIDReuseException()
def _record_user_external_id_txn(
self,
txn: LoggingTransaction,
auth_provider: str,
external_id: str,
user_id: str,
) -> None:
self.db_pool.simple_insert_txn(
txn,
table="user_external_ids",
values={
"auth_provider": auth_provider,
"external_id": external_id,
"user_id": user_id,
},
desc="record_user_external_id",
)
async def remove_user_external_id(
self, auth_provider: str, external_id: str, user_id: str
) -> None:
"""Remove a mapping from an external user id to a mxid
If the mapping is not found, this method does nothing.
Args:
auth_provider: identifier for the remote auth provider
external_id: id on that system
@ -621,6 +652,60 @@ class RegistrationWorkerStore(CacheInvalidationWorkerStore):
desc="remove_user_external_id",
)
async def replace_user_external_id(
self,
record_external_ids: List[Tuple[str, str]],
user_id: str,
) -> None:
"""Replace mappings from external user ids to a mxid in a single transaction.
All mappings are deleted and the new ones are created.
Args:
record_external_ids:
List with tuple of auth_provider and external_id to record
user_id: complete mxid that it is mapped to
Raises:
ExternalIDReuseException if the new external_id could not be mapped.
"""
def _remove_user_external_ids_txn(
txn: LoggingTransaction,
user_id: str,
) -> None:
"""Remove all mappings from external user ids to a mxid
If these mappings are not found, this method does nothing.
Args:
user_id: complete mxid that it is mapped to
"""
self.db_pool.simple_delete_txn(
txn,
table="user_external_ids",
keyvalues={"user_id": user_id},
)
def _replace_user_external_id_txn(
txn: LoggingTransaction,
):
_remove_user_external_ids_txn(txn, user_id)
for auth_provider, external_id in record_external_ids:
self._record_user_external_id_txn(
txn,
auth_provider,
external_id,
user_id,
)
try:
await self.db_pool.runInteraction(
"replace_user_external_id",
_replace_user_external_id_txn,
)
except self.database_engine.module.IntegrityError:
raise ExternalIDReuseException()
async def get_user_by_external_id(
self, auth_provider: str, external_id: str
) -> Optional[str]:

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@ -1180,9 +1180,8 @@ class UserRestTestCase(unittest.HomeserverTestCase):
self.other_user, device_id=None, valid_until_ms=None
)
)
self.url_other_user = "/_synapse/admin/v2/users/%s" % urllib.parse.quote(
self.other_user
)
self.url_prefix = "/_synapse/admin/v2/users/%s"
self.url_other_user = self.url_prefix % self.other_user
def test_requester_is_no_admin(self):
"""
@ -1738,6 +1737,93 @@ class UserRestTestCase(unittest.HomeserverTestCase):
self.assertEqual(0, len(channel.json_body["threepids"]))
self._check_fields(channel.json_body)
def test_set_duplicate_threepid(self):
"""
Test setting the same threepid for a second user.
First user loses and second user gets mapping of this threepid.
"""
# create a user to set a threepid
first_user = self.register_user("first_user", "pass")
url_first_user = self.url_prefix % first_user
# Add threepid to first user
channel = self.make_request(
"PUT",
url_first_user,
access_token=self.admin_user_tok,
content={
"threepids": [
{"medium": "email", "address": "bob1@bob.bob"},
],
},
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual(first_user, channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["threepids"]))
self.assertEqual("email", channel.json_body["threepids"][0]["medium"])
self.assertEqual("bob1@bob.bob", channel.json_body["threepids"][0]["address"])
self._check_fields(channel.json_body)
# Add threepids to other user
channel = self.make_request(
"PUT",
self.url_other_user,
access_token=self.admin_user_tok,
content={
"threepids": [
{"medium": "email", "address": "bob2@bob.bob"},
],
},
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual("@user:test", channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["threepids"]))
self.assertEqual("email", channel.json_body["threepids"][0]["medium"])
self.assertEqual("bob2@bob.bob", channel.json_body["threepids"][0]["address"])
self._check_fields(channel.json_body)
# Add two new threepids to other user
# one is used by first_user
channel = self.make_request(
"PUT",
self.url_other_user,
access_token=self.admin_user_tok,
content={
"threepids": [
{"medium": "email", "address": "bob1@bob.bob"},
{"medium": "email", "address": "bob3@bob.bob"},
],
},
)
# other user has this two threepids
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual("@user:test", channel.json_body["name"])
self.assertEqual(2, len(channel.json_body["threepids"]))
# result does not always have the same sort order, therefore it becomes sorted
sorted_result = sorted(
channel.json_body["threepids"], key=lambda k: k["address"]
)
self.assertEqual("email", sorted_result[0]["medium"])
self.assertEqual("bob1@bob.bob", sorted_result[0]["address"])
self.assertEqual("email", sorted_result[1]["medium"])
self.assertEqual("bob3@bob.bob", sorted_result[1]["address"])
self._check_fields(channel.json_body)
# first_user has no threepid anymore
channel = self.make_request(
"GET",
url_first_user,
access_token=self.admin_user_tok,
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual(first_user, channel.json_body["name"])
self.assertEqual(0, len(channel.json_body["threepids"]))
self._check_fields(channel.json_body)
def test_set_external_id(self):
"""
Test setting external id for an other user.
@ -1836,6 +1922,129 @@ class UserRestTestCase(unittest.HomeserverTestCase):
self.assertEqual("@user:test", channel.json_body["name"])
self.assertEqual(0, len(channel.json_body["external_ids"]))
def test_set_duplicate_external_id(self):
"""
Test that setting the same external id for a second user fails and
external id from user must not be changed.
"""
# create a user to use an external id
first_user = self.register_user("first_user", "pass")
url_first_user = self.url_prefix % first_user
# Add an external id to first user
channel = self.make_request(
"PUT",
url_first_user,
access_token=self.admin_user_tok,
content={
"external_ids": [
{
"external_id": "external_id1",
"auth_provider": "auth_provider",
},
],
},
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual(first_user, channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["external_ids"]))
self.assertEqual(
"external_id1", channel.json_body["external_ids"][0]["external_id"]
)
self.assertEqual(
"auth_provider", channel.json_body["external_ids"][0]["auth_provider"]
)
self._check_fields(channel.json_body)
# Add an external id to other user
channel = self.make_request(
"PUT",
self.url_other_user,
access_token=self.admin_user_tok,
content={
"external_ids": [
{
"external_id": "external_id2",
"auth_provider": "auth_provider",
},
],
},
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual("@user:test", channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["external_ids"]))
self.assertEqual(
"external_id2", channel.json_body["external_ids"][0]["external_id"]
)
self.assertEqual(
"auth_provider", channel.json_body["external_ids"][0]["auth_provider"]
)
self._check_fields(channel.json_body)
# Add two new external_ids to other user
# one is used by first
channel = self.make_request(
"PUT",
self.url_other_user,
access_token=self.admin_user_tok,
content={
"external_ids": [
{
"external_id": "external_id1",
"auth_provider": "auth_provider",
},
{
"external_id": "external_id3",
"auth_provider": "auth_provider",
},
],
},
)
# must fail
self.assertEqual(409, channel.code, msg=channel.json_body)
self.assertEqual(Codes.UNKNOWN, channel.json_body["errcode"])
self.assertEqual("External id is already in use.", channel.json_body["error"])
# other user must not changed
channel = self.make_request(
"GET",
self.url_other_user,
access_token=self.admin_user_tok,
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual("@user:test", channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["external_ids"]))
self.assertEqual(
"external_id2", channel.json_body["external_ids"][0]["external_id"]
)
self.assertEqual(
"auth_provider", channel.json_body["external_ids"][0]["auth_provider"]
)
self._check_fields(channel.json_body)
# first user must not changed
channel = self.make_request(
"GET",
url_first_user,
access_token=self.admin_user_tok,
)
self.assertEqual(200, channel.code, msg=channel.json_body)
self.assertEqual(first_user, channel.json_body["name"])
self.assertEqual(1, len(channel.json_body["external_ids"]))
self.assertEqual(
"external_id1", channel.json_body["external_ids"][0]["external_id"]
)
self.assertEqual(
"auth_provider", channel.json_body["external_ids"][0]["auth_provider"]
)
self._check_fields(channel.json_body)
def test_deactivate_user(self):
"""
Test deactivating another user.