143 lines
4.5 KiB
Go
143 lines
4.5 KiB
Go
// Copyright 2017-2018 New Vector Ltd
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// Copyright 2019-2020 The Matrix.org Foundation C.I.C.
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//
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package sqlite3
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import (
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"context"
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"database/sql"
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"github.com/lib/pq"
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"github.com/matrix-org/gomatrixserverlib"
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)
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const serverKeysSchema = `
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-- A cache of signing keys downloaded from remote servers.
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CREATE TABLE IF NOT EXISTS keydb_server_keys (
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-- The name of the matrix server the key is for.
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server_name TEXT NOT NULL,
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-- The ID of the server key.
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server_key_id TEXT NOT NULL,
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-- Combined server name and key ID separated by the ASCII unit separator
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-- to make it easier to run bulk queries.
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server_name_and_key_id TEXT NOT NULL,
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-- When the key is valid until as a millisecond timestamp.
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-- 0 if this is an expired key (in which case expired_ts will be non-zero)
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valid_until_ts BIGINT NOT NULL,
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-- When the key expired as a millisecond timestamp.
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-- 0 if this is an active key (in which case valid_until_ts will be non-zero)
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expired_ts BIGINT NOT NULL,
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-- The base64-encoded public key.
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server_key TEXT NOT NULL,
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CONSTRAINT UNIQUE (server_name, server_key_id)
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);
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CREATE INDEX IF NOT EXISTS keydb_server_name_and_key_id ON keydb_server_keys (server_name_and_key_id);
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`
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const bulkSelectServerKeysSQL = "" +
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"SELECT server_name, server_key_id, valid_until_ts, expired_ts, " +
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" server_key FROM keydb_server_keys" +
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" WHERE server_name_and_key_id IN ($1)"
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const upsertServerKeysSQL = "" +
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"INSERT INTO keydb_server_keys (server_name, server_key_id," +
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" server_name_and_key_id, valid_until_ts, expired_ts, server_key)" +
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" VALUES ($1, $2, $3, $4, $5, $6)" +
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" ON CONFLICT (server_name, server_key_id)" +
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" DO UPDATE SET valid_until_ts = $4, expired_ts = $5, server_key = $6"
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type serverKeyStatements struct {
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bulkSelectServerKeysStmt *sql.Stmt
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upsertServerKeysStmt *sql.Stmt
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}
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func (s *serverKeyStatements) prepare(db *sql.DB) (err error) {
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_, err = db.Exec(serverKeysSchema)
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if err != nil {
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return
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}
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if s.bulkSelectServerKeysStmt, err = db.Prepare(bulkSelectServerKeysSQL); err != nil {
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return
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}
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if s.upsertServerKeysStmt, err = db.Prepare(upsertServerKeysSQL); err != nil {
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return
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}
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return
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}
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func (s *serverKeyStatements) bulkSelectServerKeys(
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ctx context.Context,
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requests map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.Timestamp,
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) (map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult, error) {
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var nameAndKeyIDs []string
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for request := range requests {
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nameAndKeyIDs = append(nameAndKeyIDs, nameAndKeyID(request))
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}
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stmt := s.bulkSelectServerKeysStmt
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rows, err := stmt.QueryContext(ctx, pq.StringArray(nameAndKeyIDs))
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if err != nil {
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return nil, err
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}
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defer rows.Close() // nolint: errcheck
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results := map[gomatrixserverlib.PublicKeyLookupRequest]gomatrixserverlib.PublicKeyLookupResult{}
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for rows.Next() {
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var serverName string
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var keyID string
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var key string
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var validUntilTS int64
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var expiredTS int64
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if err = rows.Scan(&serverName, &keyID, &validUntilTS, &expiredTS, &key); err != nil {
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return nil, err
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}
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r := gomatrixserverlib.PublicKeyLookupRequest{
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ServerName: gomatrixserverlib.ServerName(serverName),
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KeyID: gomatrixserverlib.KeyID(keyID),
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}
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vk := gomatrixserverlib.VerifyKey{}
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err = vk.Key.Decode(key)
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if err != nil {
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return nil, err
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}
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results[r] = gomatrixserverlib.PublicKeyLookupResult{
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VerifyKey: vk,
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ValidUntilTS: gomatrixserverlib.Timestamp(validUntilTS),
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ExpiredTS: gomatrixserverlib.Timestamp(expiredTS),
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}
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}
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return results, nil
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}
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func (s *serverKeyStatements) upsertServerKeys(
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ctx context.Context,
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request gomatrixserverlib.PublicKeyLookupRequest,
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key gomatrixserverlib.PublicKeyLookupResult,
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) error {
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_, err := s.upsertServerKeysStmt.ExecContext(
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ctx,
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string(request.ServerName),
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string(request.KeyID),
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nameAndKeyID(request),
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key.ValidUntilTS,
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key.ExpiredTS,
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key.Key.Encode(),
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)
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return err
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}
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func nameAndKeyID(request gomatrixserverlib.PublicKeyLookupRequest) string {
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return string(request.ServerName) + "\x1F" + string(request.KeyID)
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}
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