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Merge branch 'master' into neilalexander/stateids2

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Neil Alexander 2021-07-16 10:01:08 +01:00 committed by GitHub
commit 600f90a5fb
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16 changed files with 640 additions and 74 deletions
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26
federationapi/routing/keys.go
View file

@ -188,25 +188,36 @@ func NotaryKeys(
}
response.ServerKeys = []json.RawMessage{}
for serverName := range req.ServerKeys {
var keys *gomatrixserverlib.ServerKeys
for serverName, kidToCriteria := range req.ServerKeys {
var keyList []gomatrixserverlib.ServerKeys
if serverName == cfg.Matrix.ServerName {
if k, err := localKeys(cfg, time.Now().Add(cfg.Matrix.KeyValidityPeriod)); err == nil {
keys = k
keyList = append(keyList, *k)
} else {
return util.ErrorResponse(err)
}
} else {
if k, err := fsAPI.GetServerKeys(httpReq.Context(), serverName); err == nil {
keys = &k
} else {
kids := make([]gomatrixserverlib.KeyID, len(kidToCriteria))
i := 0
for kid := range kidToCriteria {
kids[i] = kid
i++
}
var resp federationSenderAPI.QueryServerKeysResponse
err := fsAPI.QueryServerKeys(httpReq.Context(), &federationSenderAPI.QueryServerKeysRequest{
ServerName: serverName,
OptionalKeyIDs: kids,
}, &resp)
if err != nil {
return util.ErrorResponse(err)
}
keyList = append(keyList, resp.ServerKeys...)
}
if keys == nil {
if len(keyList) == 0 {
continue
}
for _, keys := range keyList {
j, err := json.Marshal(keys)
if err != nil {
logrus.WithError(err).Errorf("Failed to marshal %q response", serverName)
@ -223,6 +234,7 @@ func NotaryKeys(
response.ServerKeys = append(response.ServerKeys, js)
}
}
return util.JSONResponse{
Code: http.StatusOK,

12
federationsender/api/api.go
View file

@ -20,7 +20,6 @@ type FederationClient interface {
ClaimKeys(ctx context.Context, s gomatrixserverlib.ServerName, oneTimeKeys map[string]map[string]string) (res gomatrixserverlib.RespClaimKeys, err error)
QueryKeys(ctx context.Context, s gomatrixserverlib.ServerName, keys map[string][]string) (res gomatrixserverlib.RespQueryKeys, err error)
GetEvent(ctx context.Context, s gomatrixserverlib.ServerName, eventID string) (res gomatrixserverlib.Transaction, err error)
GetServerKeys(ctx context.Context, matrixServer gomatrixserverlib.ServerName) (gomatrixserverlib.ServerKeys, error)
MSC2836EventRelationships(ctx context.Context, dst gomatrixserverlib.ServerName, r gomatrixserverlib.MSC2836EventRelationshipsRequest, roomVersion gomatrixserverlib.RoomVersion) (res gomatrixserverlib.MSC2836EventRelationshipsResponse, err error)
MSC2946Spaces(ctx context.Context, dst gomatrixserverlib.ServerName, roomID string, r gomatrixserverlib.MSC2946SpacesRequest) (res gomatrixserverlib.MSC2946SpacesResponse, err error)
LookupServerKeys(ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp) ([]gomatrixserverlib.ServerKeys, error)
@ -41,6 +40,8 @@ func (e *FederationClientError) Error() string {
type FederationSenderInternalAPI interface {
FederationClient
QueryServerKeys(ctx context.Context, request *QueryServerKeysRequest, response *QueryServerKeysResponse) error
// PerformDirectoryLookup looks up a remote room ID from a room alias.
PerformDirectoryLookup(
ctx context.Context,
@ -94,6 +95,15 @@ type FederationSenderInternalAPI interface {
) error
}
type QueryServerKeysRequest struct {
ServerName gomatrixserverlib.ServerName
OptionalKeyIDs []gomatrixserverlib.KeyID
}
type QueryServerKeysResponse struct {
ServerKeys []gomatrixserverlib.ServerKeys
}
type PerformDirectoryLookupRequest struct {
RoomAlias string `json:"room_alias"`
ServerName gomatrixserverlib.ServerName `json:"server_name"`

14
federationsender/internal/api.go
View file

@ -202,20 +202,6 @@ func (a *FederationSenderInternalAPI) GetEvent(
return ires.(gomatrixserverlib.Transaction), nil
}
func (a *FederationSenderInternalAPI) GetServerKeys(
ctx context.Context, s gomatrixserverlib.ServerName,
) (gomatrixserverlib.ServerKeys, error) {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(s, func() (interface{}, error) {
return a.federation.GetServerKeys(ctx, s)
})
if err != nil {
return gomatrixserverlib.ServerKeys{}, err
}
return ires.(gomatrixserverlib.ServerKeys), nil
}
func (a *FederationSenderInternalAPI) LookupServerKeys(
ctx context.Context, s gomatrixserverlib.ServerName, keyRequests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
) ([]gomatrixserverlib.ServerKeys, error) {

31
federationsender/internal/query.go
View file

@ -2,8 +2,12 @@ package internal
import (
"context"
"fmt"
"time"
"github.com/matrix-org/dendrite/federationsender/api"
"github.com/matrix-org/gomatrixserverlib"
"github.com/matrix-org/util"
)
// QueryJoinedHostServerNamesInRoom implements api.FederationSenderInternalAPI
@ -20,3 +24,30 @@ func (f *FederationSenderInternalAPI) QueryJoinedHostServerNamesInRoom(
return
}
func (a *FederationSenderInternalAPI) QueryServerKeys(
ctx context.Context, req *api.QueryServerKeysRequest, res *api.QueryServerKeysResponse,
) error {
ctx, cancel := context.WithTimeout(ctx, time.Second*30)
defer cancel()
ires, err := a.doRequest(req.ServerName, func() (interface{}, error) {
return a.federation.GetServerKeys(ctx, req.ServerName)
})
if err != nil {
// try to load from the cache
serverKeysResponses, dbErr := a.db.GetNotaryKeys(ctx, req.ServerName, req.OptionalKeyIDs)
if dbErr != nil {
return fmt.Errorf("server returned %s, and db returned %s", err, dbErr)
}
res.ServerKeys = serverKeysResponses
return nil
}
serverKeys := ires.(gomatrixserverlib.ServerKeys)
// cache it!
if err = a.db.UpdateNotaryKeys(context.Background(), req.ServerName, serverKeys); err != nil {
// non-fatal, still return the response
util.GetLogger(ctx).WithError(err).Warn("failed to UpdateNotaryKeys")
}
res.ServerKeys = []gomatrixserverlib.ServerKeys{serverKeys}
return nil
}

31
federationsender/inthttp/client.go
View file

@ -15,6 +15,7 @@ import (
// HTTP paths for the internal HTTP API
const (
FederationSenderQueryJoinedHostServerNamesInRoomPath = "/federationsender/queryJoinedHostServerNamesInRoom"
FederationSenderQueryServerKeysPath = "/federationsender/queryServerKeys"
FederationSenderPerformDirectoryLookupRequestPath = "/federationsender/performDirectoryLookup"
FederationSenderPerformJoinRequestPath = "/federationsender/performJoinRequest"
@ -31,7 +32,6 @@ const (
FederationSenderLookupStatePath = "/federationsender/client/lookupState"
FederationSenderLookupStateIDsPath = "/federationsender/client/lookupStateIDs"
FederationSenderGetEventPath = "/federationsender/client/getEvent"
FederationSenderGetServerKeysPath = "/federationsender/client/getServerKeys"
FederationSenderLookupServerKeysPath = "/federationsender/client/lookupServerKeys"
FederationSenderEventRelationshipsPath = "/federationsender/client/msc2836eventRelationships"
FederationSenderSpacesSummaryPath = "/federationsender/client/msc2946spacesSummary"
@ -377,31 +377,14 @@ func (h *httpFederationSenderInternalAPI) GetEvent(
return *response.Res, nil
}
type getServerKeys struct {
S gomatrixserverlib.ServerName
ServerKeys gomatrixserverlib.ServerKeys
Err *api.FederationClientError
}
func (h *httpFederationSenderInternalAPI) GetServerKeys(
ctx context.Context, s gomatrixserverlib.ServerName,
) (gomatrixserverlib.ServerKeys, error) {
span, ctx := opentracing.StartSpanFromContext(ctx, "GetServerKeys")
func (h *httpFederationSenderInternalAPI) QueryServerKeys(
ctx context.Context, req *api.QueryServerKeysRequest, res *api.QueryServerKeysResponse,
) error {
span, ctx := opentracing.StartSpanFromContext(ctx, "QueryServerKeys")
defer span.Finish()
request := getServerKeys{
S: s,
}
var response getServerKeys
apiURL := h.federationSenderURL + FederationSenderGetServerKeysPath
err := httputil.PostJSON(ctx, span, h.httpClient, apiURL, &request, &response)
if err != nil {
return gomatrixserverlib.ServerKeys{}, err
}
if response.Err != nil {
return gomatrixserverlib.ServerKeys{}, response.Err
}
return response.ServerKeys, nil
apiURL := h.federationSenderURL + FederationSenderQueryServerKeysPath
return httputil.PostJSON(ctx, span, h.httpClient, apiURL, req, res)
}
type lookupServerKeys struct {

22
federationsender/inthttp/server.go
View file

@ -264,25 +264,17 @@ func AddRoutes(intAPI api.FederationSenderInternalAPI, internalAPIMux *mux.Route
}),
)
internalAPIMux.Handle(
FederationSenderGetServerKeysPath,
httputil.MakeInternalAPI("GetServerKeys", func(req *http.Request) util.JSONResponse {
var request getServerKeys
FederationSenderQueryServerKeysPath,
httputil.MakeInternalAPI("QueryServerKeys", func(req *http.Request) util.JSONResponse {
var request api.QueryServerKeysRequest
var response api.QueryServerKeysResponse
if err := json.NewDecoder(req.Body).Decode(&request); err != nil {
return util.MessageResponse(http.StatusBadRequest, err.Error())
}
res, err := intAPI.GetServerKeys(req.Context(), request.S)
if err != nil {
ferr, ok := err.(*api.FederationClientError)
if ok {
request.Err = ferr
} else {
request.Err = &api.FederationClientError{
Err: err.Error(),
if err := intAPI.QueryServerKeys(req.Context(), &request, &response); err != nil {
return util.ErrorResponse(err)
}
}
}
request.ServerKeys = res
return util.JSONResponse{Code: http.StatusOK, JSON: request}
return util.JSONResponse{Code: http.StatusOK, JSON: &response}
}),
)
internalAPIMux.Handle(

6
federationsender/storage/interface.go
View file

@ -66,4 +66,10 @@ type Database interface {
RenewInboundPeek(ctx context.Context, serverName gomatrixserverlib.ServerName, roomID, peekID string, renewalInterval int64) error
GetInboundPeek(ctx context.Context, serverName gomatrixserverlib.ServerName, roomID, peekID string) (*types.InboundPeek, error)
GetInboundPeeks(ctx context.Context, roomID string) ([]types.InboundPeek, error)
// Update the notary with the given server keys from the given server name.
UpdateNotaryKeys(ctx context.Context, serverName gomatrixserverlib.ServerName, serverKeys gomatrixserverlib.ServerKeys) error
// Query the notary for the server keys for the given server. If `optKeyIDs` is not empty, multiple server keys may be returned (between 1 - len(optKeyIDs))
// such that the combination of all server keys will include all the `optKeyIDs`.
GetNotaryKeys(ctx context.Context, serverName gomatrixserverlib.ServerName, optKeyIDs []gomatrixserverlib.KeyID) ([]gomatrixserverlib.ServerKeys, error)
}

64
federationsender/storage/postgres/notary_server_keys_json_table.go Normal file
View file

@ -0,0 +1,64 @@
// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// 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.
package postgres
import (
"context"
"database/sql"
"github.com/matrix-org/dendrite/federationsender/storage/tables"
"github.com/matrix-org/gomatrixserverlib"
)
const notaryServerKeysJSONSchema = `
CREATE SEQUENCE IF NOT EXISTS federationsender_notary_server_keys_json_pkey;
CREATE TABLE IF NOT EXISTS federationsender_notary_server_keys_json (
notary_id BIGINT PRIMARY KEY NOT NULL DEFAULT nextval('federationsender_notary_server_keys_json_pkey'),
response_json TEXT NOT NULL,
server_name TEXT NOT NULL,
valid_until BIGINT NOT NULL
);
`
const insertServerKeysJSONSQL = "" +
"INSERT INTO federationsender_notary_server_keys_json (response_json, server_name, valid_until) VALUES ($1, $2, $3)" +
" RETURNING notary_id"
type notaryServerKeysStatements struct {
db *sql.DB
insertServerKeysJSONStmt *sql.Stmt
}
func NewPostgresNotaryServerKeysTable(db *sql.DB) (s *notaryServerKeysStatements, err error) {
s = &notaryServerKeysStatements{
db: db,
}
_, err = db.Exec(notaryServerKeysJSONSchema)
if err != nil {
return
}
if s.insertServerKeysJSONStmt, err = db.Prepare(insertServerKeysJSONSQL); err != nil {
return
}
return
}
func (s *notaryServerKeysStatements) InsertJSONResponse(
ctx context.Context, txn *sql.Tx, keyQueryResponseJSON gomatrixserverlib.ServerKeys, serverName gomatrixserverlib.ServerName, validUntil gomatrixserverlib.Timestamp,
) (tables.NotaryID, error) {
var notaryID tables.NotaryID
return notaryID, txn.Stmt(s.insertServerKeysJSONStmt).QueryRowContext(ctx, string(keyQueryResponseJSON.Raw), serverName, validUntil).Scan(&notaryID)
}

162
federationsender/storage/postgres/notary_server_keys_metadata_table.go Normal file
View file

@ -0,0 +1,162 @@
// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// 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.
package postgres
import (
"context"
"database/sql"
"github.com/lib/pq"
"github.com/matrix-org/dendrite/federationsender/storage/tables"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/gomatrixserverlib"
)
const notaryServerKeysMetadataSchema = `
CREATE TABLE IF NOT EXISTS federationsender_notary_server_keys_metadata (
notary_id BIGINT NOT NULL,
server_name TEXT NOT NULL,
key_id TEXT NOT NULL,
UNIQUE (server_name, key_id)
);
`
const upsertServerKeysSQL = "" +
"INSERT INTO federationsender_notary_server_keys_metadata (notary_id, server_name, key_id) VALUES ($1, $2, $3)" +
" ON CONFLICT (server_name, key_id) DO UPDATE SET notary_id = $1"
// for a given (server_name, key_id), find the existing notary ID and valid until. Used to check if we will replace it
// JOINs with the json table
const selectNotaryKeyMetadataSQL = `
SELECT federationsender_notary_server_keys_metadata.notary_id, valid_until FROM federationsender_notary_server_keys_json
JOIN federationsender_notary_server_keys_metadata ON
federationsender_notary_server_keys_metadata.notary_id = federationsender_notary_server_keys_json.notary_id
WHERE federationsender_notary_server_keys_metadata.server_name = $1 AND federationsender_notary_server_keys_metadata.key_id = $2
`
// select the response which has the highest valid_until value
// JOINs with the json table
const selectNotaryKeyResponsesSQL = `
SELECT response_json FROM federationsender_notary_server_keys_json
WHERE server_name = $1 AND valid_until = (
SELECT MAX(valid_until) FROM federationsender_notary_server_keys_json WHERE server_name = $1
)
`
// select the responses which have the given key IDs
// JOINs with the json table
const selectNotaryKeyResponsesWithKeyIDsSQL = `
SELECT response_json FROM federationsender_notary_server_keys_json
JOIN federationsender_notary_server_keys_metadata ON
federationsender_notary_server_keys_metadata.notary_id = federationsender_notary_server_keys_json.notary_id
WHERE federationsender_notary_server_keys_json.server_name = $1 AND federationsender_notary_server_keys_metadata.key_id = ANY ($2)
GROUP BY federationsender_notary_server_keys_json.notary_id
`
// JOINs with the metadata table
const deleteUnusedServerKeysJSONSQL = `
DELETE FROM federationsender_notary_server_keys_json WHERE federationsender_notary_server_keys_json.notary_id NOT IN (
SELECT DISTINCT notary_id FROM federationsender_notary_server_keys_metadata
)
`
type notaryServerKeysMetadataStatements struct {
db *sql.DB
upsertServerKeysStmt *sql.Stmt
selectNotaryKeyResponsesStmt *sql.Stmt
selectNotaryKeyResponsesWithKeyIDsStmt *sql.Stmt
selectNotaryKeyMetadataStmt *sql.Stmt
deleteUnusedServerKeysJSONStmt *sql.Stmt
}
func NewPostgresNotaryServerKeysMetadataTable(db *sql.DB) (s *notaryServerKeysMetadataStatements, err error) {
s = &notaryServerKeysMetadataStatements{
db: db,
}
_, err = db.Exec(notaryServerKeysMetadataSchema)
if err != nil {
return
}
if s.upsertServerKeysStmt, err = db.Prepare(upsertServerKeysSQL); err != nil {
return
}
if s.selectNotaryKeyResponsesStmt, err = db.Prepare(selectNotaryKeyResponsesSQL); err != nil {
return
}
if s.selectNotaryKeyResponsesWithKeyIDsStmt, err = db.Prepare(selectNotaryKeyResponsesWithKeyIDsSQL); err != nil {
return
}
if s.selectNotaryKeyMetadataStmt, err = db.Prepare(selectNotaryKeyMetadataSQL); err != nil {
return
}
if s.deleteUnusedServerKeysJSONStmt, err = db.Prepare(deleteUnusedServerKeysJSONSQL); err != nil {
return
}
return
}
func (s *notaryServerKeysMetadataStatements) UpsertKey(
ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyID gomatrixserverlib.KeyID, newNotaryID tables.NotaryID, newValidUntil gomatrixserverlib.Timestamp,
) (tables.NotaryID, error) {
notaryID := newNotaryID
// see if the existing notary ID a) exists, b) has a longer valid_until
var existingNotaryID tables.NotaryID
var existingValidUntil gomatrixserverlib.Timestamp
if err := txn.Stmt(s.selectNotaryKeyMetadataStmt).QueryRowContext(ctx, serverName, keyID).Scan(&existingNotaryID, &existingValidUntil); err != nil {
if err != sql.ErrNoRows {
return 0, err
}
}
if existingValidUntil.Time().After(newValidUntil.Time()) {
// the existing valid_until is valid longer, so use that.
return existingNotaryID, nil
}
// overwrite the notary_id for this (server_name, key_id) tuple
_, err := txn.Stmt(s.upsertServerKeysStmt).ExecContext(ctx, notaryID, serverName, keyID)
return notaryID, err
}
func (s *notaryServerKeysMetadataStatements) SelectKeys(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyIDs []gomatrixserverlib.KeyID) ([]gomatrixserverlib.ServerKeys, error) {
var rows *sql.Rows
var err error
if len(keyIDs) == 0 {
rows, err = txn.Stmt(s.selectNotaryKeyResponsesStmt).QueryContext(ctx, string(serverName))
} else {
keyIDstr := make([]string, len(keyIDs))
for i := range keyIDs {
keyIDstr[i] = string(keyIDs[i])
}
rows, err = txn.Stmt(s.selectNotaryKeyResponsesWithKeyIDsStmt).QueryContext(ctx, string(serverName), pq.StringArray(keyIDstr))
}
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectNotaryKeyResponsesStmt close failed")
var results []gomatrixserverlib.ServerKeys
for rows.Next() {
var sk gomatrixserverlib.ServerKeys
if err := rows.Scan(&sk.Raw); err != nil {
return nil, err
}
results = append(results, sk)
}
return results, nil
}
func (s *notaryServerKeysMetadataStatements) DeleteOldJSONResponses(ctx context.Context, txn *sql.Tx) error {
_, err := txn.Stmt(s.deleteUnusedServerKeysJSONStmt).ExecContext(ctx)
return err
}

11
federationsender/storage/postgres/storage.go
View file

@ -17,6 +17,7 @@ package postgres
import (
"database/sql"
"fmt"
"github.com/matrix-org/dendrite/federationsender/storage/postgres/deltas"
"github.com/matrix-org/dendrite/federationsender/storage/shared"
@ -69,6 +70,14 @@ func NewDatabase(dbProperties *config.DatabaseOptions, cache caching.FederationS
if err != nil {
return nil, err
}
notaryJSON, err := NewPostgresNotaryServerKeysTable(d.db)
if err != nil {
return nil, fmt.Errorf("NewPostgresNotaryServerKeysTable: %s", err)
}
notaryMetadata, err := NewPostgresNotaryServerKeysMetadataTable(d.db)
if err != nil {
return nil, fmt.Errorf("NewPostgresNotaryServerKeysMetadataTable: %s", err)
}
m := sqlutil.NewMigrations()
deltas.LoadRemoveRoomsTable(m)
if err = m.RunDeltas(d.db, dbProperties); err != nil {
@ -85,6 +94,8 @@ func NewDatabase(dbProperties *config.DatabaseOptions, cache caching.FederationS
FederationSenderBlacklist: blacklist,
FederationSenderInboundPeeks: inboundPeeks,
FederationSenderOutboundPeeks: outboundPeeks,
NotaryServerKeysJSON: notaryJSON,
NotaryServerKeysMetadata: notaryMetadata,
}
if err = d.PartitionOffsetStatements.Prepare(d.db, d.writer, "federationsender"); err != nil {
return nil, err

47
federationsender/storage/shared/storage.go
View file

@ -18,6 +18,7 @@ import (
"context"
"database/sql"
"fmt"
"time"
"github.com/matrix-org/dendrite/federationsender/storage/tables"
"github.com/matrix-org/dendrite/federationsender/types"
@ -37,6 +38,8 @@ type Database struct {
FederationSenderBlacklist tables.FederationSenderBlacklist
FederationSenderOutboundPeeks tables.FederationSenderOutboundPeeks
FederationSenderInboundPeeks tables.FederationSenderInboundPeeks
NotaryServerKeysJSON tables.FederationSenderNotaryServerKeysJSON
NotaryServerKeysMetadata tables.FederationSenderNotaryServerKeysMetadata
}
// An Receipt contains the NIDs of a call to GetNextTransactionPDUs/EDUs.
@ -197,3 +200,47 @@ func (d *Database) GetInboundPeek(ctx context.Context, serverName gomatrixserver
func (d *Database) GetInboundPeeks(ctx context.Context, roomID string) ([]types.InboundPeek, error) {
return d.FederationSenderInboundPeeks.SelectInboundPeeks(ctx, nil, roomID)
}
func (d *Database) UpdateNotaryKeys(ctx context.Context, serverName gomatrixserverlib.ServerName, serverKeys gomatrixserverlib.ServerKeys) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
validUntil := serverKeys.ValidUntilTS
// Servers MUST use the lesser of this field and 7 days into the future when determining if a key is valid.
// This is to avoid a situation where an attacker publishes a key which is valid for a significant amount of
// time without a way for the homeserver owner to revoke it.
// https://spec.matrix.org/unstable/server-server-api/#querying-keys-through-another-server
weekIntoFuture := time.Now().Add(7 * 24 * time.Hour)
if weekIntoFuture.Before(validUntil.Time()) {
validUntil = gomatrixserverlib.AsTimestamp(weekIntoFuture)
}
notaryID, err := d.NotaryServerKeysJSON.InsertJSONResponse(ctx, txn, serverKeys, serverName, validUntil)
if err != nil {
return err
}
// update the metadata for the keys
for keyID := range serverKeys.OldVerifyKeys {
_, err = d.NotaryServerKeysMetadata.UpsertKey(ctx, txn, serverName, keyID, notaryID, validUntil)
if err != nil {
return err
}
}
for keyID := range serverKeys.VerifyKeys {
_, err = d.NotaryServerKeysMetadata.UpsertKey(ctx, txn, serverName, keyID, notaryID, validUntil)
if err != nil {
return err
}
}
// clean up old responses
return d.NotaryServerKeysMetadata.DeleteOldJSONResponses(ctx, txn)
})
}
func (d *Database) GetNotaryKeys(
ctx context.Context, serverName gomatrixserverlib.ServerName, optKeyIDs []gomatrixserverlib.KeyID,
) (sks []gomatrixserverlib.ServerKeys, err error) {
err = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
sks, err = d.NotaryServerKeysMetadata.SelectKeys(ctx, txn, serverName, optKeyIDs)
return err
})
return sks, err
}

63
federationsender/storage/sqlite3/notary_server_keys_json_table.go Normal file
View file

@ -0,0 +1,63 @@
// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// 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.
package sqlite3
import (
"context"
"database/sql"
"github.com/matrix-org/dendrite/federationsender/storage/tables"
"github.com/matrix-org/gomatrixserverlib"
)
const notaryServerKeysJSONSchema = `
CREATE TABLE IF NOT EXISTS federationsender_notary_server_keys_json (
notary_id INTEGER PRIMARY KEY AUTOINCREMENT,
response_json TEXT NOT NULL,
server_name TEXT NOT NULL,
valid_until BIGINT NOT NULL
);
`
const insertServerKeysJSONSQL = "" +
"INSERT INTO federationsender_notary_server_keys_json (response_json, server_name, valid_until) VALUES ($1, $2, $3)" +
" RETURNING notary_id"
type notaryServerKeysStatements struct {
db *sql.DB
insertServerKeysJSONStmt *sql.Stmt
}
func NewSQLiteNotaryServerKeysTable(db *sql.DB) (s *notaryServerKeysStatements, err error) {
s = &notaryServerKeysStatements{
db: db,
}
_, err = db.Exec(notaryServerKeysJSONSchema)
if err != nil {
return
}
if s.insertServerKeysJSONStmt, err = db.Prepare(insertServerKeysJSONSQL); err != nil {
return
}
return
}
func (s *notaryServerKeysStatements) InsertJSONResponse(
ctx context.Context, txn *sql.Tx, keyQueryResponseJSON gomatrixserverlib.ServerKeys, serverName gomatrixserverlib.ServerName, validUntil gomatrixserverlib.Timestamp,
) (tables.NotaryID, error) {
var notaryID tables.NotaryID
return notaryID, txn.Stmt(s.insertServerKeysJSONStmt).QueryRowContext(ctx, string(keyQueryResponseJSON.Raw), serverName, validUntil).Scan(&notaryID)
}

164
federationsender/storage/sqlite3/notary_server_keys_metadata_table.go Normal file
View file

@ -0,0 +1,164 @@
// Copyright 2021 The Matrix.org Foundation C.I.C.
//
// 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.
package sqlite3
import (
"context"
"database/sql"
"fmt"
"strings"
"github.com/matrix-org/dendrite/federationsender/storage/tables"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/gomatrixserverlib"
)
const notaryServerKeysMetadataSchema = `
CREATE TABLE IF NOT EXISTS federationsender_notary_server_keys_metadata (
notary_id BIGINT NOT NULL,
server_name TEXT NOT NULL,
key_id TEXT NOT NULL,
UNIQUE (server_name, key_id)
);
`
const upsertServerKeysSQL = "" +
"INSERT INTO federationsender_notary_server_keys_metadata (notary_id, server_name, key_id) VALUES ($1, $2, $3)" +
" ON CONFLICT (server_name, key_id) DO UPDATE SET notary_id = $1"
// for a given (server_name, key_id), find the existing notary ID and valid until. Used to check if we will replace it
// JOINs with the json table
const selectNotaryKeyMetadataSQL = `
SELECT federationsender_notary_server_keys_metadata.notary_id, valid_until FROM federationsender_notary_server_keys_json
JOIN federationsender_notary_server_keys_metadata ON
federationsender_notary_server_keys_metadata.notary_id = federationsender_notary_server_keys_json.notary_id
WHERE federationsender_notary_server_keys_metadata.server_name = $1 AND federationsender_notary_server_keys_metadata.key_id = $2
`
// select the response which has the highest valid_until value
// JOINs with the json table
const selectNotaryKeyResponsesSQL = `
SELECT response_json FROM federationsender_notary_server_keys_json
WHERE server_name = $1 AND valid_until = (
SELECT MAX(valid_until) FROM federationsender_notary_server_keys_json WHERE server_name = $1
)
`
// select the responses which have the given key IDs
// JOINs with the json table
const selectNotaryKeyResponsesWithKeyIDsSQL = `
SELECT response_json FROM federationsender_notary_server_keys_json
JOIN federationsender_notary_server_keys_metadata ON
federationsender_notary_server_keys_metadata.notary_id = federationsender_notary_server_keys_json.notary_id
WHERE federationsender_notary_server_keys_json.server_name = $1 AND federationsender_notary_server_keys_metadata.key_id IN ($2)
GROUP BY federationsender_notary_server_keys_json.notary_id
`
// JOINs with the metadata table
const deleteUnusedServerKeysJSONSQL = `
DELETE FROM federationsender_notary_server_keys_json WHERE federationsender_notary_server_keys_json.notary_id NOT IN (
SELECT DISTINCT notary_id FROM federationsender_notary_server_keys_metadata
)
`
type notaryServerKeysMetadataStatements struct {
db *sql.DB
upsertServerKeysStmt *sql.Stmt
selectNotaryKeyResponsesStmt *sql.Stmt
selectNotaryKeyMetadataStmt *sql.Stmt
deleteUnusedServerKeysJSONStmt *sql.Stmt
}
func NewSQLiteNotaryServerKeysMetadataTable(db *sql.DB) (s *notaryServerKeysMetadataStatements, err error) {
s = &notaryServerKeysMetadataStatements{
db: db,
}
_, err = db.Exec(notaryServerKeysMetadataSchema)
if err != nil {
return
}
if s.upsertServerKeysStmt, err = db.Prepare(upsertServerKeysSQL); err != nil {
return
}
if s.selectNotaryKeyResponsesStmt, err = db.Prepare(selectNotaryKeyResponsesSQL); err != nil {
return
}
if s.selectNotaryKeyMetadataStmt, err = db.Prepare(selectNotaryKeyMetadataSQL); err != nil {
return
}
if s.deleteUnusedServerKeysJSONStmt, err = db.Prepare(deleteUnusedServerKeysJSONSQL); err != nil {
return
}
return
}
func (s *notaryServerKeysMetadataStatements) UpsertKey(
ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyID gomatrixserverlib.KeyID, newNotaryID tables.NotaryID, newValidUntil gomatrixserverlib.Timestamp,
) (tables.NotaryID, error) {
notaryID := newNotaryID
// see if the existing notary ID a) exists, b) has a longer valid_until
var existingNotaryID tables.NotaryID
var existingValidUntil gomatrixserverlib.Timestamp
if err := txn.Stmt(s.selectNotaryKeyMetadataStmt).QueryRowContext(ctx, serverName, keyID).Scan(&existingNotaryID, &existingValidUntil); err != nil {
if err != sql.ErrNoRows {
return 0, err
}
}
if existingValidUntil.Time().After(newValidUntil.Time()) {
// the existing valid_until is valid longer, so use that.
return existingNotaryID, nil
}
// overwrite the notary_id for this (server_name, key_id) tuple
_, err := txn.Stmt(s.upsertServerKeysStmt).ExecContext(ctx, notaryID, serverName, keyID)
return notaryID, err
}
func (s *notaryServerKeysMetadataStatements) SelectKeys(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyIDs []gomatrixserverlib.KeyID) ([]gomatrixserverlib.ServerKeys, error) {
var rows *sql.Rows
var err error
if len(keyIDs) == 0 {
rows, err = txn.Stmt(s.selectNotaryKeyResponsesStmt).QueryContext(ctx, string(serverName))
} else {
iKeyIDs := make([]interface{}, len(keyIDs)+1)
iKeyIDs[0] = serverName
for i := range keyIDs {
iKeyIDs[i+1] = string(keyIDs[i])
}
sql := strings.Replace(selectNotaryKeyResponsesWithKeyIDsSQL, "($2)", sqlutil.QueryVariadicOffset(len(keyIDs), 1), 1)
fmt.Println(sql)
fmt.Println(iKeyIDs...)
rows, err = s.db.QueryContext(ctx, sql, iKeyIDs...)
}
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectNotaryKeyResponsesStmt close failed")
var results []gomatrixserverlib.ServerKeys
for rows.Next() {
var sk gomatrixserverlib.ServerKeys
if err := rows.Scan(&sk.Raw); err != nil {
return nil, err
}
results = append(results, sk)
}
return results, nil
}
func (s *notaryServerKeysMetadataStatements) DeleteOldJSONResponses(ctx context.Context, txn *sql.Tx) error {
_, err := txn.Stmt(s.deleteUnusedServerKeysJSONStmt).ExecContext(ctx)
return err
}

10
federationsender/storage/sqlite3/storage.go
View file

@ -71,6 +71,14 @@ func NewDatabase(dbProperties *config.DatabaseOptions, cache caching.FederationS
if err != nil {
return nil, err
}
notaryKeys, err := NewSQLiteNotaryServerKeysTable(d.db)
if err != nil {
return nil, err
}
notaryKeysMetadata, err := NewSQLiteNotaryServerKeysMetadataTable(d.db)
if err != nil {
return nil, err
}
m := sqlutil.NewMigrations()
deltas.LoadRemoveRoomsTable(m)
if err = m.RunDeltas(d.db, dbProperties); err != nil {
@ -87,6 +95,8 @@ func NewDatabase(dbProperties *config.DatabaseOptions, cache caching.FederationS
FederationSenderBlacklist: blacklist,
FederationSenderOutboundPeeks: outboundPeeks,
FederationSenderInboundPeeks: inboundPeeks,
NotaryServerKeysJSON: notaryKeys,
NotaryServerKeysMetadata: notaryKeysMetadata,
}
if err = d.PartitionOffsetStatements.Prepare(d.db, d.writer, "federationsender"); err != nil {
return nil, err

24
federationsender/storage/tables/interface.go
View file

@ -22,6 +22,8 @@ import (
"github.com/matrix-org/gomatrixserverlib"
)
type NotaryID int64
type FederationSenderQueuePDUs interface {
InsertQueuePDU(ctx context.Context, txn *sql.Tx, transactionID gomatrixserverlib.TransactionID, serverName gomatrixserverlib.ServerName, nid int64) error
DeleteQueuePDUs(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, jsonNIDs []int64) error
@ -80,3 +82,25 @@ type FederationSenderInboundPeeks interface {
DeleteInboundPeek(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, roomID, peekID string) (err error)
DeleteInboundPeeks(ctx context.Context, txn *sql.Tx, roomID string) (err error)
}
// FederationSenderNotaryServerKeysJSON contains the byte-for-byte responses from servers which contain their keys and is signed by them.
type FederationSenderNotaryServerKeysJSON interface {
// InsertJSONResponse inserts a new response JSON. Useless on its own, needs querying via FederationSenderNotaryServerKeysMetadata
// `validUntil` should be the value of `valid_until_ts` with the 7-day check applied from:
// "Servers MUST use the lesser of this field and 7 days into the future when determining if a key is valid.
// This is to avoid a situation where an attacker publishes a key which is valid for a significant amount of time
// without a way for the homeserver owner to revoke it.""
InsertJSONResponse(ctx context.Context, txn *sql.Tx, keyQueryResponseJSON gomatrixserverlib.ServerKeys, serverName gomatrixserverlib.ServerName, validUntil gomatrixserverlib.Timestamp) (NotaryID, error)
}
// FederationSenderNotaryServerKeysMetadata persists the metadata for FederationSenderNotaryServerKeysJSON
type FederationSenderNotaryServerKeysMetadata interface {
// UpsertKey updates or inserts a (server_name, key_id) tuple, pointing it via NotaryID at the the response which has the longest valid_until_ts
// `newNotaryID` and `newValidUntil` should be the notary ID / valid_until which has this (server_name, key_id) tuple already, e.g one you just inserted.
UpsertKey(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyID gomatrixserverlib.KeyID, newNotaryID NotaryID, newValidUntil gomatrixserverlib.Timestamp) (NotaryID, error)
// SelectKeys returns the signed JSON objects which contain the given key IDs. This will be at most the length of `keyIDs` and at least 1 (assuming
// the keys exist in the first place). If `keyIDs` is empty, the signed JSON object with the longest valid_until_ts will be returned.
SelectKeys(ctx context.Context, txn *sql.Tx, serverName gomatrixserverlib.ServerName, keyIDs []gomatrixserverlib.KeyID) ([]gomatrixserverlib.ServerKeys, error)
// DeleteOldJSONResponses removes all responses which are not referenced in FederationSenderNotaryServerKeysMetadata
DeleteOldJSONResponses(ctx context.Context, txn *sql.Tx) error
}

1
sytest-whitelist
View file

@ -533,3 +533,4 @@ Inbound federation can receive invite and reject when remote is unreachable
Remote servers cannot set power levels in rooms without existing powerlevels
Remote servers should reject attempts by non-creators to set the power levels
Federation handles empty auth_events in state_ids sanely
Key notary server should return an expired key if it can't find any others