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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 shared
import (
"context"
"database/sql"
"encoding/json"
"fmt"
"github.com/matrix-org/dendrite/internal/sqlutil"
"github.com/matrix-org/dendrite/keyserver/api"
"github.com/matrix-org/dendrite/keyserver/storage/tables"
"github.com/matrix-org/dendrite/keyserver/types"
"github.com/matrix-org/gomatrixserverlib"
)
type Database struct {
DB *sql.DB
Writer sqlutil.Writer
OneTimeKeysTable tables.OneTimeKeys
DeviceKeysTable tables.DeviceKeys
KeyChangesTable tables.KeyChanges
StaleDeviceListsTable tables.StaleDeviceLists
CrossSigningKeysTable tables.CrossSigningKeys
CrossSigningSigsTable tables.CrossSigningSigs
}
func (d *Database) ExistingOneTimeKeys(ctx context.Context, userID, deviceID string, keyIDsWithAlgorithms []string) (map[string]json.RawMessage, error) {
return d.OneTimeKeysTable.SelectOneTimeKeys(ctx, userID, deviceID, keyIDsWithAlgorithms)
}
func (d *Database) StoreOneTimeKeys(ctx context.Context, keys api.OneTimeKeys) (counts *api.OneTimeKeysCount, err error) {
_ = d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
counts, err = d.OneTimeKeysTable.InsertOneTimeKeys(ctx, txn, keys)
return err
})
return
}
func (d *Database) OneTimeKeysCount(ctx context.Context, userID, deviceID string) (*api.OneTimeKeysCount, error) {
return d.OneTimeKeysTable.CountOneTimeKeys(ctx, userID, deviceID)
}
func (d *Database) DeviceKeysJSON(ctx context.Context, keys []api.DeviceMessage) error {
return d.DeviceKeysTable.SelectDeviceKeysJSON(ctx, keys)
}
func (d *Database) PrevIDsExists(ctx context.Context, userID string, prevIDs []int64) (bool, error) {
count, err := d.DeviceKeysTable.CountStreamIDsForUser(ctx, userID, prevIDs)
if err != nil {
return false, err
}
return count == len(prevIDs), nil
}
func (d *Database) StoreRemoteDeviceKeys(ctx context.Context, keys []api.DeviceMessage, clearUserIDs []string) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
for _, userID := range clearUserIDs {
err := d.DeviceKeysTable.DeleteAllDeviceKeys(ctx, txn, userID)
if err != nil {
return err
}
}
return d.DeviceKeysTable.InsertDeviceKeys(ctx, txn, keys)
})
}
func (d *Database) StoreLocalDeviceKeys(ctx context.Context, keys []api.DeviceMessage) error {
// work out the latest stream IDs for each user
userIDToStreamID := make(map[string]int64)
for _, k := range keys {
userIDToStreamID[k.UserID] = 0
}
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
for userID := range userIDToStreamID {
streamID, err := d.DeviceKeysTable.SelectMaxStreamIDForUser(ctx, txn, userID)
if err != nil {
return err
}
userIDToStreamID[userID] = streamID
}
// set the stream IDs for each key
for i := range keys {
k := keys[i]
userIDToStreamID[k.UserID]++ // start stream from 1
k.StreamID = userIDToStreamID[k.UserID]
keys[i] = k
}
return d.DeviceKeysTable.InsertDeviceKeys(ctx, txn, keys)
})
}
func (d *Database) DeviceKeysForUser(ctx context.Context, userID string, deviceIDs []string, includeEmpty bool) ([]api.DeviceMessage, error) {
return d.DeviceKeysTable.SelectBatchDeviceKeys(ctx, userID, deviceIDs, includeEmpty)
}
func (d *Database) ClaimKeys(ctx context.Context, userToDeviceToAlgorithm map[string]map[string]string) ([]api.OneTimeKeys, error) {
var result []api.OneTimeKeys
err := d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
for userID, deviceToAlgo := range userToDeviceToAlgorithm {
for deviceID, algo := range deviceToAlgo {
keyJSON, err := d.OneTimeKeysTable.SelectAndDeleteOneTimeKey(ctx, txn, userID, deviceID, algo)
if err != nil {
return err
}
if keyJSON != nil {
result = append(result, api.OneTimeKeys{
UserID: userID,
DeviceID: deviceID,
KeyJSON: keyJSON,
})
}
}
}
return nil
})
return result, err
}
func (d *Database) StoreKeyChange(ctx context.Context, userID string) (id int64, err error) {
err = d.Writer.Do(nil, nil, func(_ *sql.Tx) error {
id, err = d.KeyChangesTable.InsertKeyChange(ctx, userID)
return err
})
return
}
func (d *Database) KeyChanges(ctx context.Context, fromOffset, toOffset int64) (userIDs []string, latestOffset int64, err error) {
return d.KeyChangesTable.SelectKeyChanges(ctx, fromOffset, toOffset)
}
// StaleDeviceLists returns a list of user IDs ending with the domains provided who have stale device lists.
// If no domains are given, all user IDs with stale device lists are returned.
func (d *Database) StaleDeviceLists(ctx context.Context, domains []gomatrixserverlib.ServerName) ([]string, error) {
return d.StaleDeviceListsTable.SelectUserIDsWithStaleDeviceLists(ctx, domains)
}
// MarkDeviceListStale sets the stale bit for this user to isStale.
func (d *Database) MarkDeviceListStale(ctx context.Context, userID string, isStale bool) error {
return d.Writer.Do(nil, nil, func(_ *sql.Tx) error {
return d.StaleDeviceListsTable.InsertStaleDeviceList(ctx, userID, isStale)
})
}
// DeleteDeviceKeys removes the device keys for a given user/device, and any accompanying
// cross-signing signatures relating to that device.
func (d *Database) DeleteDeviceKeys(ctx context.Context, userID string, deviceIDs []gomatrixserverlib.KeyID) error {
return d.Writer.Do(nil, nil, func(txn *sql.Tx) error {
for _, deviceID := range deviceIDs {
if err := d.CrossSigningSigsTable.DeleteCrossSigningSigsForTarget(ctx, txn, userID, deviceID); err != nil && err != sql.ErrNoRows {
return fmt.Errorf("d.CrossSigningSigsTable.DeleteCrossSigningSigsForTarget: %w", err)
}
if err := d.DeviceKeysTable.DeleteDeviceKeys(ctx, txn, userID, string(deviceID)); err != nil && err != sql.ErrNoRows {
return fmt.Errorf("d.DeviceKeysTable.DeleteDeviceKeys: %w", err)
}
if err := d.OneTimeKeysTable.DeleteOneTimeKeys(ctx, txn, userID, string(deviceID)); err != nil && err != sql.ErrNoRows {
return fmt.Errorf("d.OneTimeKeysTable.DeleteOneTimeKeys: %w", err)
}
}
return nil
})
}
// CrossSigningKeysForUser returns the latest known cross-signing keys for a user, if any.
func (d *Database) CrossSigningKeysForUser(ctx context.Context, userID string) (map[gomatrixserverlib.CrossSigningKeyPurpose]gomatrixserverlib.CrossSigningKey, error) {
keyMap, err := d.CrossSigningKeysTable.SelectCrossSigningKeysForUser(ctx, nil, userID)
if err != nil {
return nil, fmt.Errorf("d.CrossSigningKeysTable.SelectCrossSigningKeysForUser: %w", err)
}
results := map[gomatrixserverlib.CrossSigningKeyPurpose]gomatrixserverlib.CrossSigningKey{}
for purpose, key := range keyMap {
keyID := gomatrixserverlib.KeyID("ed25519:" + key.Encode())
result := gomatrixserverlib.CrossSigningKey{
UserID: userID,
Usage: []gomatrixserverlib.CrossSigningKeyPurpose{purpose},
Keys: map[gomatrixserverlib.KeyID]gomatrixserverlib.Base64Bytes{
keyID: key,
},
}
sigMap, err := d.CrossSigningSigsTable.SelectCrossSigningSigsForTarget(ctx, nil, userID, userID, keyID)
if err != nil {
continue
}
for sigUserID, forSigUserID := range sigMap {
if userID != sigUserID {
continue
}
if result.Signatures == nil {
result.Signatures = map[string]map[gomatrixserverlib.KeyID]gomatrixserverlib.Base64Bytes{}
}
if _, ok := result.Signatures[sigUserID]; !ok {
result.Signatures[sigUserID] = map[gomatrixserverlib.KeyID]gomatrixserverlib.Base64Bytes{}
}
for sigKeyID, sigBytes := range forSigUserID {
result.Signatures[sigUserID][sigKeyID] = sigBytes
}
}
results[purpose] = result
}
return results, nil
}
// CrossSigningKeysForUser returns the latest known cross-signing keys for a user, if any.
func (d *Database) CrossSigningKeysDataForUser(ctx context.Context, userID string) (types.CrossSigningKeyMap, error) {
return d.CrossSigningKeysTable.SelectCrossSigningKeysForUser(ctx, nil, userID)
}
// CrossSigningSigsForTarget returns the signatures for a given user's key ID, if any.
func (d *Database) CrossSigningSigsForTarget(ctx context.Context, originUserID, targetUserID string, targetKeyID gomatrixserverlib.KeyID) (types.CrossSigningSigMap, error) {
return d.CrossSigningSigsTable.SelectCrossSigningSigsForTarget(ctx, nil, originUserID, targetUserID, targetKeyID)
}
// StoreCrossSigningKeysForUser stores the latest known cross-signing keys for a user.
func (d *Database) StoreCrossSigningKeysForUser(ctx context.Context, userID string, keyMap types.CrossSigningKeyMap) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
for keyType, keyData := range keyMap {
if err := d.CrossSigningKeysTable.UpsertCrossSigningKeysForUser(ctx, txn, userID, keyType, keyData); err != nil {
return fmt.Errorf("d.CrossSigningKeysTable.InsertCrossSigningKeysForUser: %w", err)
}
}
return nil
})
}
// StoreCrossSigningSigsForTarget stores a signature for a target user ID and key/dvice.
func (d *Database) StoreCrossSigningSigsForTarget(
ctx context.Context,
originUserID string, originKeyID gomatrixserverlib.KeyID,
targetUserID string, targetKeyID gomatrixserverlib.KeyID,
signature gomatrixserverlib.Base64Bytes,
) error {
return d.Writer.Do(d.DB, nil, func(txn *sql.Tx) error {
if err := d.CrossSigningSigsTable.UpsertCrossSigningSigsForTarget(ctx, nil, originUserID, originKeyID, targetUserID, targetKeyID, signature); err != nil {
return fmt.Errorf("d.CrossSigningSigsTable.InsertCrossSigningSigsForTarget: %w", err)
}
return nil
})
}
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