133 lines
4 KiB
Go
133 lines
4 KiB
Go
// Copyright 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 postgres
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import (
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"context"
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"database/sql"
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"time"
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"github.com/matrix-org/dendrite/internal"
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"github.com/matrix-org/dendrite/internal/sqlutil"
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"github.com/matrix-org/dendrite/keyserver/api"
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"github.com/matrix-org/dendrite/keyserver/storage/tables"
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)
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var deviceKeysSchema = `
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-- Stores device keys for users
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CREATE TABLE IF NOT EXISTS keyserver_device_keys (
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user_id TEXT NOT NULL,
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device_id TEXT NOT NULL,
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ts_added_secs BIGINT NOT NULL,
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key_json TEXT NOT NULL,
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-- Clobber based on tuple of user/device.
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CONSTRAINT keyserver_device_keys_unique UNIQUE (user_id, device_id)
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);
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`
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const upsertDeviceKeysSQL = "" +
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"INSERT INTO keyserver_device_keys (user_id, device_id, ts_added_secs, key_json)" +
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" VALUES ($1, $2, $3, $4)" +
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" ON CONFLICT ON CONSTRAINT keyserver_device_keys_unique" +
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" DO UPDATE SET key_json = $4"
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const selectDeviceKeysSQL = "" +
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"SELECT key_json FROM keyserver_device_keys WHERE user_id=$1 AND device_id=$2"
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const selectBatchDeviceKeysSQL = "" +
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"SELECT device_id, key_json FROM keyserver_device_keys WHERE user_id=$1"
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type deviceKeysStatements struct {
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db *sql.DB
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upsertDeviceKeysStmt *sql.Stmt
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selectDeviceKeysStmt *sql.Stmt
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selectBatchDeviceKeysStmt *sql.Stmt
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}
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func NewPostgresDeviceKeysTable(db *sql.DB) (tables.DeviceKeys, error) {
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s := &deviceKeysStatements{
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db: db,
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}
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_, err := db.Exec(deviceKeysSchema)
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if err != nil {
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return nil, err
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}
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if s.upsertDeviceKeysStmt, err = db.Prepare(upsertDeviceKeysSQL); err != nil {
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return nil, err
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}
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if s.selectDeviceKeysStmt, err = db.Prepare(selectDeviceKeysSQL); err != nil {
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return nil, err
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}
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if s.selectBatchDeviceKeysStmt, err = db.Prepare(selectBatchDeviceKeysSQL); err != nil {
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return nil, err
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}
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return s, nil
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}
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func (s *deviceKeysStatements) SelectDeviceKeysJSON(ctx context.Context, keys []api.DeviceKeys) error {
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for i, key := range keys {
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var keyJSONStr string
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err := s.selectDeviceKeysStmt.QueryRowContext(ctx, key.UserID, key.DeviceID).Scan(&keyJSONStr)
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if err != nil && err != sql.ErrNoRows {
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return err
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}
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// this will be '' when there is no device
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keys[i].KeyJSON = []byte(keyJSONStr)
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}
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return nil
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}
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func (s *deviceKeysStatements) InsertDeviceKeys(ctx context.Context, keys []api.DeviceKeys) error {
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now := time.Now().Unix()
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return sqlutil.WithTransaction(s.db, func(txn *sql.Tx) error {
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for _, key := range keys {
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_, err := txn.Stmt(s.upsertDeviceKeysStmt).ExecContext(
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ctx, key.UserID, key.DeviceID, now, string(key.KeyJSON),
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)
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if err != nil {
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return err
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}
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}
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return nil
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})
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}
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func (s *deviceKeysStatements) SelectBatchDeviceKeys(ctx context.Context, userID string, deviceIDs []string) ([]api.DeviceKeys, error) {
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rows, err := s.selectBatchDeviceKeysStmt.QueryContext(ctx, userID)
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if err != nil {
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return nil, err
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}
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defer internal.CloseAndLogIfError(ctx, rows, "selectBatchDeviceKeysStmt: rows.close() failed")
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deviceIDMap := make(map[string]bool)
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for _, d := range deviceIDs {
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deviceIDMap[d] = true
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}
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var result []api.DeviceKeys
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for rows.Next() {
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var dk api.DeviceKeys
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dk.UserID = userID
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var keyJSON string
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if err := rows.Scan(&dk.DeviceID, &keyJSON); err != nil {
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return nil, err
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}
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dk.KeyJSON = []byte(keyJSON)
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// include the key if we want all keys (no device) or it was asked
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if deviceIDMap[dk.DeviceID] || len(deviceIDs) == 0 {
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result = append(result, dk)
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}
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}
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return result, rows.Err()
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}
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