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Key Backups (3/3) : Implement querying keys and various bugfixes (#1946) 

* Add querying device keys

Makes a bunch of sytests pass

* Apparently only the current version supports uploading keys

* Linting
main
kegsay 2021-07-27 19:29:32 +01:00 committed by GitHub
parent b3754d68fc
commit 32bf14a37c
No known key found for this signature in database
GPG Key ID: 4AEE18F83AFDEB23
12 changed files with 362 additions and 101 deletions
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77
clientapi/routing/key_backup.go
View File

@ -37,7 +37,7 @@ type keyBackupVersionCreateResponse struct {
type keyBackupVersionResponse struct {
Algorithm string `json:"algorithm"`
AuthData json.RawMessage `json:"auth_data"`
Count int `json:"count"`
Count int64 `json:"count"`
ETag string `json:"etag"`
Version string `json:"version"`
}
@ -89,7 +89,10 @@ func CreateKeyBackupVersion(req *http.Request, userAPI userapi.UserInternalAPI,
// Implements GET /_matrix/client/r0/room_keys/version and GET /_matrix/client/r0/room_keys/version/{version}
func KeyBackupVersion(req *http.Request, userAPI userapi.UserInternalAPI, device *userapi.Device, version string) util.JSONResponse {
var queryResp userapi.QueryKeyBackupResponse
userAPI.QueryKeyBackup(req.Context(), &userapi.QueryKeyBackupRequest{}, &queryResp)
userAPI.QueryKeyBackup(req.Context(), &userapi.QueryKeyBackupRequest{
UserID: device.UserID,
Version: version,
}, &queryResp)
if queryResp.Error != "" {
return util.ErrorResponse(fmt.Errorf("QueryKeyBackup: %s", queryResp.Error))
}
@ -216,3 +219,73 @@ func UploadBackupKeys(
},
}
}
// Get keys from a given backup version. Response returned varies depending on if roomID and sessionID are set.
func GetBackupKeys(
req *http.Request, userAPI userapi.UserInternalAPI, device *userapi.Device, version, roomID, sessionID string,
) util.JSONResponse {
var queryResp userapi.QueryKeyBackupResponse
userAPI.QueryKeyBackup(req.Context(), &userapi.QueryKeyBackupRequest{
UserID: device.UserID,
Version: version,
ReturnKeys: true,
KeysForRoomID: roomID,
KeysForSessionID: sessionID,
}, &queryResp)
if queryResp.Error != "" {
return util.ErrorResponse(fmt.Errorf("QueryKeyBackup: %s", queryResp.Error))
}
if !queryResp.Exists {
return util.JSONResponse{
Code: 404,
JSON: jsonerror.NotFound("version not found"),
}
}
if sessionID != "" {
// return the key itself if it was found
roomData, ok := queryResp.Keys[roomID]
if ok {
key, ok := roomData[sessionID]
if ok {
return util.JSONResponse{
Code: 200,
JSON: key,
}
}
}
} else if roomID != "" {
roomData, ok := queryResp.Keys[roomID]
if ok {
// wrap response in "sessions"
return util.JSONResponse{
Code: 200,
JSON: struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
}{
Sessions: roomData,
},
}
}
} else {
// response is the same as the upload request
var resp keyBackupSessionRequest
resp.Rooms = make(map[string]struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
})
for roomID, roomData := range queryResp.Keys {
resp.Rooms[roomID] = struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
}{
Sessions: roomData,
}
}
return util.JSONResponse{
Code: 200,
JSON: resp,
}
}
return util.JSONResponse{
Code: 404,
JSON: jsonerror.NotFound("keys not found"),
}
}

81
clientapi/routing/routing.go
View File

@ -896,11 +896,15 @@ func Setup(
}),
).Methods(http.MethodGet, http.MethodOptions)
// Key Backup Versions
r0mux.Handle("/room_keys/version/{versionID}",
// Key Backup Versions (Metadata)
r0mux.Handle("/room_keys/version/{version}",
httputil.MakeAuthAPI("get_backup_keys_version", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
version := req.URL.Query().Get("version")
return KeyBackupVersion(req, userAPI, device, version)
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
}
return KeyBackupVersion(req, userAPI, device, vars["version"])
}),
).Methods(http.MethodGet, http.MethodOptions)
r0mux.Handle("/room_keys/version",
@ -908,28 +912,22 @@ func Setup(
return KeyBackupVersion(req, userAPI, device, "")
}),
).Methods(http.MethodGet, http.MethodOptions)
r0mux.Handle("/room_keys/version/{versionID}",
r0mux.Handle("/room_keys/version/{version}",
httputil.MakeAuthAPI("put_backup_keys_version", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
version := req.URL.Query().Get("version")
if version == "" {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.InvalidArgumentValue("version must be specified"),
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
}
}
return ModifyKeyBackupVersionAuthData(req, userAPI, device, version)
return ModifyKeyBackupVersionAuthData(req, userAPI, device, vars["version"])
}),
).Methods(http.MethodPut)
r0mux.Handle("/room_keys/version/{versionID}",
r0mux.Handle("/room_keys/version/{version}",
httputil.MakeAuthAPI("delete_backup_keys_version", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
version := req.URL.Query().Get("version")
if version == "" {
return util.JSONResponse{
Code: 400,
JSON: jsonerror.InvalidArgumentValue("version must be specified"),
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
}
}
return DeleteKeyBackupVersion(req, userAPI, device, version)
return DeleteKeyBackupVersion(req, userAPI, device, vars["version"])
}),
).Methods(http.MethodDelete)
r0mux.Handle("/room_keys/version",
@ -938,7 +936,8 @@ func Setup(
}),
).Methods(http.MethodPost, http.MethodOptions)
// E2E Backup Keys
// Inserting E2E Backup Keys
// Bulk room and session
r0mux.Handle("/room_keys/keys",
httputil.MakeAuthAPI("put_backup_keys", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
@ -973,6 +972,9 @@ func Setup(
}
roomID := vars["roomID"]
var reqBody keyBackupSessionRequest
reqBody.Rooms = make(map[string]struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
})
reqBody.Rooms[roomID] = struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
}{
@ -989,7 +991,7 @@ func Setup(
).Methods(http.MethodPut)
// Single room, single session
r0mux.Handle("/room_keys/keys/{roomID}/{sessionID}",
httputil.MakeAuthAPI("put_backup_keys_room", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
httputil.MakeAuthAPI("put_backup_keys_room_session", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
@ -1009,14 +1011,47 @@ func Setup(
roomID := vars["roomID"]
sessionID := vars["sessionID"]
var keyReq keyBackupSessionRequest
keyReq.Rooms = make(map[string]struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
})
keyReq.Rooms[roomID] = struct {
Sessions map[string]userapi.KeyBackupSession `json:"sessions"`
}{}
}{
Sessions: make(map[string]userapi.KeyBackupSession),
}
keyReq.Rooms[roomID].Sessions[sessionID] = reqBody
return UploadBackupKeys(req, userAPI, device, version, &keyReq)
}),
).Methods(http.MethodPut)
// Querying E2E Backup Keys
r0mux.Handle("/room_keys/keys",
httputil.MakeAuthAPI("get_backup_keys", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
return GetBackupKeys(req, userAPI, device, req.URL.Query().Get("version"), "", "")
}),
).Methods(http.MethodGet, http.MethodOptions)
r0mux.Handle("/room_keys/keys/{roomID}",
httputil.MakeAuthAPI("get_backup_keys_room", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
}
return GetBackupKeys(req, userAPI, device, req.URL.Query().Get("version"), vars["roomID"], "")
}),
).Methods(http.MethodGet, http.MethodOptions)
r0mux.Handle("/room_keys/keys/{roomID}/{sessionID}",
httputil.MakeAuthAPI("get_backup_keys_room_session", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {
vars, err := httputil.URLDecodeMapValues(mux.Vars(req))
if err != nil {
return util.ErrorResponse(err)
}
return GetBackupKeys(req, userAPI, device, req.URL.Query().Get("version"), vars["roomID"], vars["sessionID"])
}),
).Methods(http.MethodGet, http.MethodOptions)
// Deleting E2E Backup Keys
// Supplying a device ID is deprecated.
r0mux.Handle("/keys/upload/{deviceID}",
httputil.MakeAuthAPI("keys_upload", userAPI, func(req *http.Request, device *userapi.Device) util.JSONResponse {

10
sytest-whitelist
View File

@ -540,3 +540,13 @@ Key notary server must not overwrite a valid key with a spurious result from the
GET /rooms/:room_id/aliases lists aliases
Only room members can list aliases of a room
Users with sufficient power-level can delete other's aliases
Can create backup version
Can update backup version
Responds correctly when backup is empty
Can backup keys
Can update keys with better versions
Will not update keys with worse versions
Will not back up to an old backup version
Can create more than 10 backup versions
Can delete backup
Deleted & recreated backups are empty

25
userapi/api/api.go
View File

@ -67,6 +67,23 @@ type KeyBackupSession struct {
SessionData json.RawMessage `json:"session_data"`
}
func (a *KeyBackupSession) ShouldReplaceRoomKey(newKey *KeyBackupSession) bool {
// https://spec.matrix.org/unstable/client-server-api/#backup-algorithm-mmegolm_backupv1curve25519-aes-sha2
// "if the keys have different values for is_verified, then it will keep the key that has is_verified set to true"
if newKey.IsVerified && !a.IsVerified {
return true
}
// "if they have the same values for is_verified, then it will keep the key with a lower first_message_index"
if newKey.FirstMessageIndex < a.FirstMessageIndex {
return true
}
// "and finally, is is_verified and first_message_index are equal, then it will keep the key with a lower forwarded_count"
if newKey.ForwardedCount < a.ForwardedCount {
return true
}
return false
}
// Internal KeyBackupData for passing to/from the storage layer
type InternalKeyBackupSession struct {
KeyBackupSession
@ -88,6 +105,10 @@ type PerformKeyBackupResponse struct {
type QueryKeyBackupRequest struct {
UserID string
Version string // the version to query, if blank it means the latest
ReturnKeys bool // whether to return keys in the backup response or just the metadata
KeysForRoomID string // optional string to return keys which belong to this room
KeysForSessionID string // optional string to return keys which belong to this (room, session)
}
type QueryKeyBackupResponse struct {
@ -96,9 +117,11 @@ type QueryKeyBackupResponse struct {
Algorithm string `json:"algorithm"`
AuthData json.RawMessage `json:"auth_data"`
Count int `json:"count"`
Count int64 `json:"count"`
ETag string `json:"etag"`
Version string `json:"version"`
Keys map[string]map[string]KeyBackupSession // the keys if ReturnKeys=true
}
// InputAccountDataRequest is the request for InputAccountData

28
userapi/internal/api.go
View File

@ -475,6 +475,7 @@ func (a *UserInternalAPI) PerformKeyBackup(ctx context.Context, req *api.Perform
if err != nil {
res.Error = fmt.Sprintf("failed to update backup: %s", err)
}
res.Exists = err == nil
res.Version = req.Version
return
}
@ -483,8 +484,8 @@ func (a *UserInternalAPI) PerformKeyBackup(ctx context.Context, req *api.Perform
}
func (a *UserInternalAPI) uploadBackupKeys(ctx context.Context, req *api.PerformKeyBackupRequest, res *api.PerformKeyBackupResponse) {
// ensure the version metadata exists
version, _, _, _, deleted, err := a.AccountDB.GetKeyBackup(ctx, req.UserID, req.Version)
// you can only upload keys for the CURRENT version
version, _, _, _, deleted, err := a.AccountDB.GetKeyBackup(ctx, req.UserID, "")
if err != nil {
res.Error = fmt.Sprintf("failed to query version: %s", err)
return
@ -493,6 +494,11 @@ func (a *UserInternalAPI) uploadBackupKeys(ctx context.Context, req *api.Perform
res.Error = "backup was deleted"
return
}
if version != req.Version {
res.BadInput = true
res.Error = fmt.Sprintf("%s isn't the current version, %s is.", req.Version, version)
return
}
res.Exists = true
res.Version = version
@ -529,9 +535,21 @@ func (a *UserInternalAPI) QueryKeyBackup(ctx context.Context, req *api.QueryKeyB
}
res.Algorithm = algorithm
res.AuthData = authData
res.ETag = etag
res.Exists = !deleted
// TODO:
res.Count = 0
res.ETag = etag
if !req.ReturnKeys {
res.Count, err = a.AccountDB.CountBackupKeys(ctx, version, req.UserID)
if err != nil {
res.Error = fmt.Sprintf("failed to count keys: %s", err)
}
return
}
result, err := a.AccountDB.GetBackupKeys(ctx, version, req.UserID, req.KeysForRoomID, req.KeysForSessionID)
if err != nil {
res.Error = fmt.Sprintf("failed to query keys: %s", err)
return
}
res.Keys = result
}

2
userapi/storage/accounts/interface.go
View File

@ -61,6 +61,8 @@ type Database interface {
DeleteKeyBackup(ctx context.Context, userID, version string) (exists bool, err error)
GetKeyBackup(ctx context.Context, userID, version string) (versionResult, algorithm string, authData json.RawMessage, etag string, deleted bool, err error)
UpsertBackupKeys(ctx context.Context, version, userID string, uploads []api.InternalKeyBackupSession) (count int64, etag string, err error)
GetBackupKeys(ctx context.Context, version, userID, filterRoomID, filterSessionID string) (result map[string]map[string]api.KeyBackupSession, err error)
CountBackupKeys(ctx context.Context, version, userID string) (count int64, err error)
}
// Err3PIDInUse is the error returned when trying to save an association involving

46
userapi/storage/accounts/postgres/key_backup_table.go
View File

@ -35,7 +35,8 @@ CREATE TABLE IF NOT EXISTS account_e2e_room_keys (
is_verified BOOLEAN NOT NULL,
session_data TEXT NOT NULL
);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_idx ON account_e2e_room_keys(user_id, room_id, session_id);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_idx ON account_e2e_room_keys(user_id, room_id, session_id, version);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_versions_idx ON account_e2e_room_keys(user_id, version);
`
const insertBackupKeySQL = "" +
@ -53,14 +54,23 @@ const selectKeysSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2"
const selectKeysByRoomIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3"
const selectKeysByRoomIDAndSessionIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3 AND session_id = $4"
type keyBackupStatements struct {
insertBackupKeyStmt *sql.Stmt
updateBackupKeyStmt *sql.Stmt
countKeysStmt *sql.Stmt
selectKeysStmt *sql.Stmt
selectKeysByRoomIDStmt *sql.Stmt
selectKeysByRoomIDAndSessionIDStmt *sql.Stmt
}
// nolint:unused
func (s *keyBackupStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(keyBackupTableSchema)
if err != nil {
@ -78,6 +88,12 @@ func (s *keyBackupStatements) prepare(db *sql.DB) (err error) {
if s.selectKeysStmt, err = db.Prepare(selectKeysSQL); err != nil {
return
}
if s.selectKeysByRoomIDStmt, err = db.Prepare(selectKeysByRoomIDSQL); err != nil {
return
}
if s.selectKeysByRoomIDAndSessionIDStmt, err = db.Prepare(selectKeysByRoomIDAndSessionIDSQL); err != nil {
return
}
return
}
@ -109,11 +125,35 @@ func (s *keyBackupStatements) updateBackupKey(
func (s *keyBackupStatements) selectKeys(
ctx context.Context, txn *sql.Tx, userID, version string,
) (map[string]map[string]api.KeyBackupSession, error) {
result := make(map[string]map[string]api.KeyBackupSession)
rows, err := txn.Stmt(s.selectKeysStmt).QueryContext(ctx, userID, version)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) selectKeysByRoomID(
ctx context.Context, txn *sql.Tx, userID, version, roomID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDStmt).QueryContext(ctx, userID, version, roomID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) selectKeysByRoomIDAndSessionID(
ctx context.Context, txn *sql.Tx, userID, version, roomID, sessionID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDAndSessionIDStmt).QueryContext(ctx, userID, version, roomID, sessionID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func unpackKeys(ctx context.Context, rows *sql.Rows) (map[string]map[string]api.KeyBackupSession, error) {
result := make(map[string]map[string]api.KeyBackupSession)
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysStmt.Close failed")
for rows.Next() {
var key api.InternalKeyBackupSession

1
userapi/storage/accounts/postgres/key_backup_version_table.go
View File

@ -67,7 +67,6 @@ type keyBackupVersionStatements struct {
updateKeyBackupETagStmt *sql.Stmt
}
// nolint:unused
func (s *keyBackupVersionStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(keyBackupVersionTableSchema)
if err != nil {

55
userapi/storage/accounts/postgres/storage.go
View File

@ -96,13 +96,12 @@ func NewDatabase(dbProperties *config.DatabaseOptions, serverName gomatrixserver
if err = d.openIDTokens.prepare(db, serverName); err != nil {
return nil, err
}
/*
if err = d.keyBackupVersions.prepare(db); err != nil {
return nil, err
}
if err = d.keyBackups.prepare(db); err != nil {
return nil, err
} */
}
return d, nil
}
@ -418,6 +417,37 @@ func (d *Database) GetKeyBackup(
return
}
func (d *Database) GetBackupKeys(
ctx context.Context, version, userID, filterRoomID, filterSessionID string,
) (result map[string]map[string]api.KeyBackupSession, err error) {
err = sqlutil.WithTransaction(d.db, func(txn *sql.Tx) error {
if filterSessionID != "" {
result, err = d.keyBackups.selectKeysByRoomIDAndSessionID(ctx, txn, userID, version, filterRoomID, filterSessionID)
return err
}
if filterRoomID != "" {
result, err = d.keyBackups.selectKeysByRoomID(ctx, txn, userID, version, filterRoomID)
return err
}
result, err = d.keyBackups.selectKeys(ctx, txn, userID, version)
return err
})
return
}
func (d *Database) CountBackupKeys(
ctx context.Context, version, userID string,
) (count int64, err error) {
err = sqlutil.WithTransaction(d.db, func(txn *sql.Tx) error {
count, err = d.keyBackups.countKeys(ctx, txn, userID, version)
if err != nil {
return err
}
return nil
})
return
}
// nolint:nakedret
func (d *Database) UpsertBackupKeys(
ctx context.Context, version, userID string, uploads []api.InternalKeyBackupSession,
@ -445,7 +475,7 @@ func (d *Database) UpsertBackupKeys(
if existingRoom != nil {
existingSession, ok := existingRoom[newKey.SessionID]
if ok {
if shouldReplaceRoomKey(existingSession, newKey.KeyBackupSession) {
if existingSession.ShouldReplaceRoomKey(&newKey.KeyBackupSession) {
err = d.keyBackups.updateBackupKey(ctx, txn, userID, version, newKey)
changed = true
if err != nil {
@ -489,22 +519,3 @@ func (d *Database) UpsertBackupKeys(
})
return
}
// TODO FIXME XXX : This logic really shouldn't live in the storage layer, but I don't know where else is sensible which won't
// create circular import loops
func shouldReplaceRoomKey(existing, uploaded api.KeyBackupSession) bool {
// https://spec.matrix.org/unstable/client-server-api/#backup-algorithm-mmegolm_backupv1curve25519-aes-sha2
// "if the keys have different values for is_verified, then it will keep the key that has is_verified set to true"
if uploaded.IsVerified && !existing.IsVerified {
return true
}
// "if they have the same values for is_verified, then it will keep the key with a lower first_message_index"
if uploaded.FirstMessageIndex < existing.FirstMessageIndex {
return true
}
// "and finally, is is_verified and first_message_index are equal, then it will keep the key with a lower forwarded_count"
if uploaded.ForwardedCount < existing.ForwardedCount {
return true
}
return false
}

46
userapi/storage/accounts/sqlite3/key_backup_table.go
View File

@ -35,7 +35,8 @@ CREATE TABLE IF NOT EXISTS account_e2e_room_keys (
is_verified BOOLEAN NOT NULL,
session_data TEXT NOT NULL
);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_idx ON account_e2e_room_keys(user_id, room_id, session_id);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_idx ON account_e2e_room_keys(user_id, room_id, session_id, version);
CREATE UNIQUE INDEX IF NOT EXISTS e2e_room_keys_versions_idx ON account_e2e_room_keys(user_id, version);
`
const insertBackupKeySQL = "" +
@ -53,14 +54,23 @@ const selectKeysSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2"
const selectKeysByRoomIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3"
const selectKeysByRoomIDAndSessionIDSQL = "" +
"SELECT room_id, session_id, first_message_index, forwarded_count, is_verified, session_data FROM account_e2e_room_keys " +
"WHERE user_id = $1 AND version = $2 AND room_id = $3 AND session_id = $4"
type keyBackupStatements struct {
insertBackupKeyStmt *sql.Stmt
updateBackupKeyStmt *sql.Stmt
countKeysStmt *sql.Stmt
selectKeysStmt *sql.Stmt
selectKeysByRoomIDStmt *sql.Stmt
selectKeysByRoomIDAndSessionIDStmt *sql.Stmt
}
// nolint:unused
func (s *keyBackupStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(keyBackupTableSchema)
if err != nil {
@ -78,6 +88,12 @@ func (s *keyBackupStatements) prepare(db *sql.DB) (err error) {
if s.selectKeysStmt, err = db.Prepare(selectKeysSQL); err != nil {
return
}
if s.selectKeysByRoomIDStmt, err = db.Prepare(selectKeysByRoomIDSQL); err != nil {
return
}
if s.selectKeysByRoomIDAndSessionIDStmt, err = db.Prepare(selectKeysByRoomIDAndSessionIDSQL); err != nil {
return
}
return
}
@ -109,11 +125,35 @@ func (s *keyBackupStatements) updateBackupKey(
func (s *keyBackupStatements) selectKeys(
ctx context.Context, txn *sql.Tx, userID, version string,
) (map[string]map[string]api.KeyBackupSession, error) {
result := make(map[string]map[string]api.KeyBackupSession)
rows, err := txn.Stmt(s.selectKeysStmt).QueryContext(ctx, userID, version)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) selectKeysByRoomID(
ctx context.Context, txn *sql.Tx, userID, version, roomID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDStmt).QueryContext(ctx, userID, version, roomID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func (s *keyBackupStatements) selectKeysByRoomIDAndSessionID(
ctx context.Context, txn *sql.Tx, userID, version, roomID, sessionID string,
) (map[string]map[string]api.KeyBackupSession, error) {
rows, err := txn.Stmt(s.selectKeysByRoomIDAndSessionIDStmt).QueryContext(ctx, userID, version, roomID, sessionID)
if err != nil {
return nil, err
}
return unpackKeys(ctx, rows)
}
func unpackKeys(ctx context.Context, rows *sql.Rows) (map[string]map[string]api.KeyBackupSession, error) {
result := make(map[string]map[string]api.KeyBackupSession)
defer internal.CloseAndLogIfError(ctx, rows, "selectKeysStmt.Close failed")
for rows.Next() {
var key api.InternalKeyBackupSession

1
userapi/storage/accounts/sqlite3/key_backup_version_table.go
View File

@ -65,7 +65,6 @@ type keyBackupVersionStatements struct {
updateKeyBackupETagStmt *sql.Stmt
}
// nolint:unused
func (s *keyBackupVersionStatements) prepare(db *sql.DB) (err error) {
_, err = db.Exec(keyBackupVersionTableSchema)
if err != nil {

55
userapi/storage/accounts/sqlite3/storage.go
View File

@ -100,13 +100,12 @@ func NewDatabase(dbProperties *config.DatabaseOptions, serverName gomatrixserver
if err = d.openIDTokens.prepare(db, serverName); err != nil {
return nil, err
}
/*
if err = d.keyBackupVersions.prepare(db); err != nil {
return nil, err
}
if err = d.keyBackups.prepare(db); err != nil {
return nil, err
} */
}
return d, nil
}
@ -459,6 +458,37 @@ func (d *Database) GetKeyBackup(
return
}
func (d *Database) GetBackupKeys(
ctx context.Context, version, userID, filterRoomID, filterSessionID string,
) (result map[string]map[string]api.KeyBackupSession, err error) {
err = d.writer.Do(d.db, nil, func(txn *sql.Tx) error {
if filterSessionID != "" {
result, err = d.keyBackups.selectKeysByRoomIDAndSessionID(ctx, txn, userID, version, filterRoomID, filterSessionID)
return err
}
if filterRoomID != "" {
result, err = d.keyBackups.selectKeysByRoomID(ctx, txn, userID, version, filterRoomID)
return err
}
result, err = d.keyBackups.selectKeys(ctx, txn, userID, version)
return err
})
return
}
func (d *Database) CountBackupKeys(
ctx context.Context, version, userID string,
) (count int64, err error) {
err = d.writer.Do(d.db, nil, func(txn *sql.Tx) error {
count, err = d.keyBackups.countKeys(ctx, txn, userID, version)
if err != nil {
return err
}
return nil
})
return
}
// nolint:nakedret
func (d *Database) UpsertBackupKeys(
ctx context.Context, version, userID string, uploads []api.InternalKeyBackupSession,
@ -486,7 +516,7 @@ func (d *Database) UpsertBackupKeys(
if existingRoom != nil {
existingSession, ok := existingRoom[newKey.SessionID]
if ok {
if shouldReplaceRoomKey(existingSession, newKey.KeyBackupSession) {
if existingSession.ShouldReplaceRoomKey(&newKey.KeyBackupSession) {
err = d.keyBackups.updateBackupKey(ctx, txn, userID, version, newKey)
changed = true
if err != nil {
@ -531,22 +561,3 @@ func (d *Database) UpsertBackupKeys(
})
return
}
// TODO FIXME XXX : This logic really shouldn't live in the storage layer, but I don't know where else is sensible which won't
// create circular import loops
func shouldReplaceRoomKey(existing, uploaded api.KeyBackupSession) bool {
// https://spec.matrix.org/unstable/client-server-api/#backup-algorithm-mmegolm_backupv1curve25519-aes-sha2
// "if the keys have different values for is_verified, then it will keep the key that has is_verified set to true"
if uploaded.IsVerified && !existing.IsVerified {
return true
}
// "if they have the same values for is_verified, then it will keep the key with a lower first_message_index"
if uploaded.FirstMessageIndex < existing.FirstMessageIndex {
return true
}
// "and finally, is is_verified and first_message_index are equal, then it will keep the key with a lower forwarded_count"
if uploaded.ForwardedCount < existing.ForwardedCount {
return true
}
return false
}