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utils.go
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utils.go
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package accountutils
import (
"context"
crand "crypto/rand"
"encoding/hex"
"fmt"
"os"
"path"
"path/filepath"
"strings"
"time"
"github.com/gogo/protobuf/proto"
"github.com/ipfs/go-datastore"
sync_ds "github.com/ipfs/go-datastore/sync"
"go.uber.org/zap"
"golang.org/x/crypto/nacl/box"
"gorm.io/gorm"
"moul.io/zapgorm2"
sqlite "berty.tech/berty/v2/go/internal/gorm-sqlcipher"
"berty.tech/berty/v2/go/pkg/accounttypes"
"berty.tech/berty/v2/go/pkg/errcode"
encrepo "berty.tech/go-ipfs-repo-encrypted"
"berty.tech/weshnet/pkg/cryptoutil"
weshnet_errcode "berty.tech/weshnet/pkg/errcode"
"berty.tech/weshnet/pkg/logutil"
)
const (
InMemoryDir = ":memory:"
DefaultPushKeyFilename = "push.key"
AccountMetafileName = "account_meta"
AccountNetConfFileName = "account_net_conf"
MessengerDatabaseFilename = "messenger.sqlite"
ReplicationDatabaseFilename = "replication.sqlite"
DirectoryServiceDatabaseFilename = "directoryservice.sqlite"
StorageKeyName = "storage"
StorageKeySize = 32
StorageSaltSize = 16
)
func GetDevicePushKeyForPath(filePath string, createIfMissing bool) (pk *[cryptoutil.KeySize]byte, sk *[cryptoutil.KeySize]byte, err error) {
contents, err := os.ReadFile(filePath)
if os.IsNotExist(err) && createIfMissing {
if err := os.MkdirAll(path.Dir(filePath), 0o700); err != nil {
return nil, nil, errcode.ErrInternal.Wrap(err)
}
pk, sk, err = box.GenerateKey(crand.Reader)
if err != nil {
return nil, nil, errcode.ErrCryptoKeyGeneration.Wrap(err)
}
contents = make([]byte, cryptoutil.KeySize*2)
for i := 0; i < cryptoutil.KeySize; i++ {
contents[i] = pk[i]
contents[i+cryptoutil.KeySize] = sk[i]
}
if _, err := os.Create(filePath); err != nil {
return nil, nil, errcode.ErrInternal.Wrap(err)
}
if err := os.WriteFile(filePath, contents, 0o600); err != nil {
return nil, nil, errcode.ErrInternal.Wrap(err)
}
return pk, sk, nil
} else if err != nil {
return nil, nil, weshnet_errcode.ErrPushUnableToDecrypt.Wrap(fmt.Errorf("unable to get device push key"))
}
pkVal := [cryptoutil.KeySize]byte{}
skVal := [cryptoutil.KeySize]byte{}
for i := 0; i < cryptoutil.KeySize; i++ {
pkVal[i] = contents[i]
skVal[i] = contents[i+cryptoutil.KeySize]
}
return &pkVal, &skVal, nil
}
func ListAccounts(ctx context.Context, rootDir string, ks NativeKeystore, logger *zap.Logger) ([]*accounttypes.AccountMetadata, error) {
if logger == nil {
logger = zap.NewNop()
}
accountsDir := GetAccountsDir(rootDir)
if _, err := os.Stat(accountsDir); os.IsNotExist(err) {
return []*accounttypes.AccountMetadata{}, nil
} else if err != nil {
return nil, errcode.ErrBertyAccountFSError.Wrap(err)
}
subitems, err := os.ReadDir(accountsDir)
if err != nil {
return nil, errcode.ErrBertyAccountFSError.Wrap(err)
}
var accounts []*accounttypes.AccountMetadata
for _, subitem := range subitems {
if !subitem.IsDir() {
continue
}
var storageKey []byte
if ks != nil {
var err error
if storageKey, err = GetOrCreateStorageKeyForAccount(ks, subitem.Name()); err != nil {
accounts = append(accounts, &accounttypes.AccountMetadata{Error: err.Error(), AccountID: subitem.Name()})
continue
}
}
var storageSalt []byte
if ks != nil {
var err error
if storageSalt, err = GetOrCreateRootDatastoreSaltForAccount(ks, subitem.Name()); err != nil {
accounts = append(accounts, &accounttypes.AccountMetadata{Error: err.Error(), AccountID: subitem.Name()})
continue
}
}
account, err := GetAccountMetaForName(ctx, rootDir, subitem.Name(), storageKey, storageSalt, logger)
if err != nil {
accounts = append(accounts, &accounttypes.AccountMetadata{Error: err.Error(), AccountID: subitem.Name()})
} else {
accounts = append(accounts, account)
}
}
return accounts, nil
}
func GetAccountMetaForName(ctx context.Context, rootDir string, accountID string, storageKey []byte, storageSalt []byte, logger *zap.Logger) (*accounttypes.AccountMetadata, error) {
if logger == nil {
logger = zap.NewNop()
}
ds, err := GetRootDatastoreForPath(GetAccountDir(rootDir, accountID), storageKey, storageSalt, logger)
if err != nil {
return nil, errcode.ErrBertyAccountFSError.Wrap(err)
}
metaBytes, err := ds.Get(ctx, datastore.NewKey(AccountMetafileName))
if err == datastore.ErrNotFound {
return nil, errcode.ErrBertyAccountDataNotFound
} else if err != nil {
logger.Warn("unable to read account metadata", zap.Error(err), logutil.PrivateString("account-id", accountID))
return nil, errcode.ErrBertyAccountFSError.Wrap(fmt.Errorf("unable to read account metadata: %w", err))
}
if err := ds.Close(); err != nil {
return nil, errcode.ErrDBClose.Wrap(err)
}
meta := &accounttypes.AccountMetadata{}
if err := proto.Unmarshal(metaBytes, meta); err != nil {
return nil, errcode.ErrDeserialization.Wrap(fmt.Errorf("unable to unmarshal account metadata: %w", err))
}
meta.AccountID = accountID
return meta, nil
}
func GetAccountsDir(rootDir string) string {
if rootDir == InMemoryDir {
return rootDir
}
return filepath.Join(rootDir, "accounts")
}
func GetAccountDir(rootDir, accountID string) string {
if rootDir == InMemoryDir {
return rootDir
}
return filepath.Join(GetAccountsDir(rootDir), accountID)
}
func CreateDataDir(dir string) error {
switch {
case dir == "":
return errcode.TODO.Wrap(fmt.Errorf("missing data dir argument"))
case dir == InMemoryDir:
return nil
}
_, err := os.Stat(dir)
switch {
case os.IsNotExist(err):
if err := os.MkdirAll(dir, 0o700); err != nil {
return errcode.TODO.Wrap(err)
}
case err != nil:
return errcode.TODO.Wrap(err)
}
return nil
}
func GetGlobalAppStorage(rootDir string, ks NativeKeystore) (datastore.Batching, func() error, error) {
dbPath := filepath.Join(rootDir, "app.sqlite")
if err := os.MkdirAll(rootDir, 0o700); err != nil {
return nil, nil, errcode.TODO.Wrap(err)
}
var err error
storageKey := ([]byte)(nil)
if ks != nil {
storageKey, err = GetOrCreateMasterStorageKey(ks)
if err != nil {
return nil, nil, errcode.TODO.Wrap(err)
}
}
storageSalt := ([]byte)(nil)
if ks != nil {
storageSalt, err = GetOrCreateGlobalAppStorageSalt(ks)
if err != nil {
return nil, nil, errcode.TODO.Wrap(err)
}
}
sqldsOpts := encrepo.SQLCipherDatastoreOptions{JournalMode: "WAL", PlaintextHeader: len(storageSalt) != 0, Salt: storageSalt}
appDatastore, err := encrepo.NewSQLCipherDatastore("sqlite3", dbPath, "data", storageKey, sqldsOpts)
if err != nil {
return nil, nil, errcode.ErrDBOpen.Wrap(err)
}
return encrepo.NewNamespacedDatastore(appDatastore, datastore.NewKey("app-storage")), appDatastore.Close, nil
}
func GetAccountAppStorage(rootDir string, accountID string, key []byte, salt []byte) (datastore.Datastore, error) {
dbPath := filepath.Join(GetAccountDir(rootDir, accountID), "app-account.sqlite")
sqldsOpts := encrepo.SQLCipherDatastoreOptions{JournalMode: "WAL", PlaintextHeader: len(salt) != 0, Salt: salt}
return encrepo.NewSQLCipherDatastore("sqlite3", dbPath, "data", key, sqldsOpts)
}
func GetRootDatastoreForPath(dir string, key []byte, salt []byte, logger *zap.Logger) (datastore.Batching, error) {
inMemory := dir == InMemoryDir
var ds datastore.Batching
if inMemory {
ds = datastore.NewMapDatastore()
} else {
err := os.MkdirAll(dir, os.ModePerm)
if err != nil {
return nil, errcode.TODO.Wrap(err)
}
dbPath := filepath.Join(dir, "datastore.sqlite")
sqldsOpts := encrepo.SQLCipherDatastoreOptions{JournalMode: "WAL", PlaintextHeader: len(salt) != 0, Salt: salt}
ds, err = encrepo.NewSQLCipherDatastore("sqlite3", dbPath, "blocks", key, sqldsOpts)
if err != nil {
return nil, errcode.TODO.Wrap(err)
}
}
ds = sync_ds.MutexWrap(ds)
return ds, nil
}
func GetMessengerDBForPath(dir string, key []byte, salt []byte, logger *zap.Logger) (*gorm.DB, func(), error) {
if dir != InMemoryDir {
dir = path.Join(dir, MessengerDatabaseFilename)
}
return GetGormDBForPath(dir, key, salt, logger)
}
func GetReplicationDBForPath(dir string, logger *zap.Logger) (*gorm.DB, func(), error) {
return getServiceDBForPath(dir, ReplicationDatabaseFilename, logger)
}
func GetDirectoryServiceDBForPath(dir string, logger *zap.Logger) (*gorm.DB, func(), error) {
return getServiceDBForPath(dir, DirectoryServiceDatabaseFilename, logger)
}
func getServiceDBForPath(dir string, serviceFilename string, logger *zap.Logger) (*gorm.DB, func(), error) {
if dir != InMemoryDir {
dir = path.Join(dir, serviceFilename)
}
return GetGormDBForPath(dir, nil, nil, logger)
}
const (
saltLength = 16
keyLength = 32
)
func GetGormDBForPath(dbPath string, key []byte, salt []byte, logger *zap.Logger) (*gorm.DB, func(), error) {
var sqliteConn string
if dbPath == InMemoryDir {
sqliteConn = fmt.Sprintf("file:memdb%d?mode=memory&cache=shared", time.Now().UnixNano())
} else {
sqliteConn = dbPath
args := []string{
"_journal_mode=WAL",
}
if len(key) != 0 {
if len(key) != keyLength {
return nil, nil, errcode.TODO.Wrap(fmt.Errorf("bad key, expected %d bytes, got %d", keyLength, len(key)))
}
if len(salt) != saltLength {
return nil, nil, errcode.TODO.Wrap(fmt.Errorf("bad salt, expected %d bytes, got %d", saltLength, len(salt)))
}
args = append(args,
fmt.Sprintf("_pragma_key=x'%s'", hex.EncodeToString(key)),
"_pragma_cipher_plaintext_header_size=32",
fmt.Sprintf("_pragma_cipher_salt=x'%s'", hex.EncodeToString(salt)),
"_pragma_cipher_page_size=4096",
)
}
sqliteConn += fmt.Sprintf("?%s", strings.Join(args, "&"))
}
cfg := &gorm.Config{
Logger: zapgorm2.New(logger.Named("gorm")),
DisableForeignKeyConstraintWhenMigrating: true,
}
db, err := gorm.Open(sqlite.Open(sqliteConn), cfg)
if err != nil {
return nil, nil, errcode.TODO.Wrap(err)
}
sqlDB, err := db.DB()
if err != nil {
return nil, nil, fmt.Errorf("unable to gorm underlying db: %w", err)
}
sqlDB.SetMaxOpenConns(1)
return db, func() {
_ = sqlDB.Close()
}, nil
}