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// Copyright 2020 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"
"encoding/json"
"time"
"github.com/lib/pq"
"github.com/matrix-org/dendrite/internal"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/userapi/api"
"github.com/matrix-org/dendrite/userapi/storage/tables"
)
var oneTimeKeysSchema = `
-- Stores one-time public keys for users
CREATE TABLE IF NOT EXISTS keyserver_one_time_keys (
user_id TEXT NOT NULL,
device_id TEXT NOT NULL,
key_id TEXT NOT NULL,
algorithm TEXT NOT NULL,
ts_added_secs BIGINT NOT NULL,
key_json TEXT NOT NULL,
-- Clobber based on 4-uple of user/device/key/algorithm.
CONSTRAINT keyserver_one_time_keys_unique UNIQUE (user_id, device_id, key_id, algorithm)
);
CREATE INDEX IF NOT EXISTS keyserver_one_time_keys_idx ON keyserver_one_time_keys (user_id, device_id);
`
const upsertKeysSQL = "" +
"INSERT INTO keyserver_one_time_keys (user_id, device_id, key_id, algorithm, ts_added_secs, key_json)" +
" VALUES ($1, $2, $3, $4, $5, $6)" +
" ON CONFLICT ON CONSTRAINT keyserver_one_time_keys_unique" +
" DO UPDATE SET key_json = $6"
const selectOneTimeKeysSQL = "" +
"SELECT concat(algorithm, ':', key_id) as algorithmwithid, key_json FROM keyserver_one_time_keys WHERE user_id=$1 AND device_id=$2 AND concat(algorithm, ':', key_id) = ANY($3);"
const selectKeysCountSQL = "" +
"SELECT algorithm, COUNT(key_id) FROM " +
" (SELECT algorithm, key_id FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 LIMIT 100)" +
" x GROUP BY algorithm"
const deleteOneTimeKeySQL = "" +
"DELETE FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 AND algorithm = $3 AND key_id = $4"
const selectKeyByAlgorithmSQL = "" +
"SELECT key_id, key_json FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2 AND algorithm = $3 LIMIT 1"
const deleteOneTimeKeysSQL = "" +
"DELETE FROM keyserver_one_time_keys WHERE user_id = $1 AND device_id = $2"
type oneTimeKeysStatements struct {
db *sql.DB
upsertKeysStmt *sql.Stmt
selectKeysStmt *sql.Stmt
selectKeysCountStmt *sql.Stmt
selectKeyByAlgorithmStmt *sql.Stmt
deleteOneTimeKeyStmt *sql.Stmt
deleteOneTimeKeysStmt *sql.Stmt
}
func NewPostgresOneTimeKeysTable(db *sql.DB) (tables.OneTimeKeys, error) {
s := &oneTimeKeysStatements{
db: db,
}
_, err := db.Exec(oneTimeKeysSchema)
if err != nil {
return nil, err
}
return s, sqlutil.StatementList{
{&s.upsertKeysStmt, upsertKeysSQL},
{&s.selectKeysStmt, selectOneTimeKeysSQL},
{&s.selectKeysCountStmt, selectKeysCountSQL},
{&s.selectKeyByAlgorithmStmt, selectKeyByAlgorithmSQL},
{&s.deleteOneTimeKeyStmt, deleteOneTimeKeySQL},
{&s.deleteOneTimeKeysStmt, deleteOneTimeKeysSQL},
}.Prepare(db)
}
func (s *oneTimeKeysStatements) SelectOneTimeKeys(ctx context.Context, userID, deviceID string, keyIDsWithAlgorithms []string) (map[string]json.RawMessage, error) {
rows, err := s.selectKeysStmt.QueryContext(ctx, userID, deviceID, pq.Array(keyIDsWithAlgorithms))
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysStmt: rows.close() failed")
result := make(map[string]json.RawMessage)
var (
algorithmWithID string
keyJSONStr string
)
for rows.Next() {
if err := rows.Scan(&algorithmWithID, &keyJSONStr); err != nil {
return nil, err
}
result[algorithmWithID] = json.RawMessage(keyJSONStr)
}
return result, rows.Err()
}
func (s *oneTimeKeysStatements) CountOneTimeKeys(ctx context.Context, userID, deviceID string) (*api.OneTimeKeysCount, error) {
counts := &api.OneTimeKeysCount{
DeviceID: deviceID,
UserID: userID,
KeyCount: make(map[string]int),
}
rows, err := s.selectKeysCountStmt.QueryContext(ctx, userID, deviceID)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysCountStmt: rows.close() failed")
for rows.Next() {
var algorithm string
var count int
if err = rows.Scan(&algorithm, &count); err != nil {
return nil, err
}
counts.KeyCount[algorithm] = count
}
return counts, rows.Err()
}
func (s *oneTimeKeysStatements) InsertOneTimeKeys(ctx context.Context, txn *sql.Tx, keys api.OneTimeKeys) (*api.OneTimeKeysCount, error) {
now := time.Now().Unix()
counts := &api.OneTimeKeysCount{
DeviceID: keys.DeviceID,
UserID: keys.UserID,
KeyCount: make(map[string]int),
}
for keyIDWithAlgo, keyJSON := range keys.KeyJSON {
algo, keyID := keys.Split(keyIDWithAlgo)
_, err := sqlutil.TxStmt(txn, s.upsertKeysStmt).ExecContext(
ctx, keys.UserID, keys.DeviceID, keyID, algo, now, string(keyJSON),
)
if err != nil {
return nil, err
}
}
rows, err := sqlutil.TxStmt(txn, s.selectKeysCountStmt).QueryContext(ctx, keys.UserID, keys.DeviceID)
if err != nil {
return nil, err
}
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysCountStmt: rows.close() failed")
for rows.Next() {
var algorithm string
var count int
if err = rows.Scan(&algorithm, &count); err != nil {
return nil, err
}
counts.KeyCount[algorithm] = count
}
return counts, rows.Err()
}
func (s *oneTimeKeysStatements) SelectAndDeleteOneTimeKey(
ctx context.Context, txn *sql.Tx, userID, deviceID, algorithm string,
) (map[string]json.RawMessage, error) {
var keyID string
var keyJSON string
err := sqlutil.TxStmtContext(ctx, txn, s.selectKeyByAlgorithmStmt).QueryRowContext(ctx, userID, deviceID, algorithm).Scan(&keyID, &keyJSON)
if err != nil {
if err == sql.ErrNoRows {
return nil, nil
}
return nil, err
}
_, err = sqlutil.TxStmtContext(ctx, txn, s.deleteOneTimeKeyStmt).ExecContext(ctx, userID, deviceID, algorithm, keyID)
return map[string]json.RawMessage{
algorithm + ":" + keyID: json.RawMessage(keyJSON),
}, err
}
func (s *oneTimeKeysStatements) DeleteOneTimeKeys(ctx context.Context, txn *sql.Tx, userID, deviceID string) error {
_, err := sqlutil.TxStmt(txn, s.deleteOneTimeKeysStmt).ExecContext(ctx, userID, deviceID)
return err
}
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