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utils.go
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/
utils.go
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package accountutils
import (
crand "crypto/rand"
"fmt"
"io/ioutil"
"os"
"path"
"path/filepath"
badger_opts "github.com/dgraph-io/badger/options"
"github.com/gogo/protobuf/proto"
"github.com/ipfs/go-datastore"
sync_ds "github.com/ipfs/go-datastore/sync"
ipfsbadger "github.com/ipfs/go-ds-badger"
"go.uber.org/zap"
"golang.org/x/crypto/nacl/box"
"gorm.io/driver/sqlite"
"gorm.io/gorm"
"moul.io/zapgorm2"
"berty.tech/berty/v2/go/internal/cryptoutil"
"berty.tech/berty/v2/go/pkg/accounttypes"
"berty.tech/berty/v2/go/pkg/errcode"
)
const (
InMemoryDir = ":memory:"
DefaultPushKeyFilename = "push.key"
AccountMetafileName = "account_meta"
AccountNetConfFileName = "account_net_conf"
MessengerDatabaseFilename = "messenger.sqlite"
)
func GetDevicePushKeyForPath(filePath string, createIfMissing bool) (pk *[cryptoutil.KeySize]byte, sk *[cryptoutil.KeySize]byte, err error) {
contents, err := ioutil.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 := ioutil.WriteFile(filePath, contents, 0o600); err != nil {
return nil, nil, errcode.ErrInternal.Wrap(err)
}
return pk, sk, nil
} else if err != nil {
return nil, nil, 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(rootDir string, logger *zap.Logger) ([]*accounttypes.AccountMetadata, error) {
if logger == nil {
logger = zap.NewNop()
}
if _, err := os.Stat(rootDir); os.IsNotExist(err) {
return []*accounttypes.AccountMetadata{}, nil
} else if err != nil {
return nil, errcode.ErrBertyAccountFSError.Wrap(err)
}
subitems, err := ioutil.ReadDir(rootDir)
if err != nil {
return nil, errcode.ErrBertyAccountFSError.Wrap(err)
}
var accounts []*accounttypes.AccountMetadata
for _, subitem := range subitems {
if !subitem.IsDir() {
continue
}
account, err := GetAccountMetaForName(rootDir, subitem.Name(), 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(rootDir string, accountID string, logger *zap.Logger) (*accounttypes.AccountMetadata, error) {
if logger == nil {
logger = zap.NewNop()
}
metafileName := filepath.Join(rootDir, accountID, AccountMetafileName)
metaBytes, err := ioutil.ReadFile(metafileName)
if os.IsNotExist(err) {
return nil, errcode.ErrBertyAccountDataNotFound
} else if err != nil {
logger.Warn("unable to read account metadata", zap.Error(err), zap.String("account-id", accountID))
return nil, errcode.ErrBertyAccountFSError.Wrap(fmt.Errorf("unable to read account metadata: %w", err))
}
meta := &accounttypes.AccountMetadata{}
if err := proto.Unmarshal(metaBytes, meta); err != nil {
return nil, errcode.ErrDeserialization.Wrap(fmt.Errorf("unable to unmarshall account metadata: %w", err))
}
meta.AccountID = accountID
return meta, nil
}
func GetDatastoreDir(dir string) (string, error) {
switch {
case dir == "":
return "", errcode.TODO.Wrap(fmt.Errorf("--store.dir is empty"))
case dir == InMemoryDir:
return InMemoryDir, nil
}
dir = path.Join(dir, "account0") // account0 is a suffix that will be used with multi-account later
_, 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 dir, nil
}
func GetRootDatastoreForPath(dir string, lowMemoryProfile bool, logger *zap.Logger) (datastore.Batching, error) {
var err error
inMemory := dir == InMemoryDir
var ds datastore.Batching
if inMemory {
ds = datastore.NewMapDatastore()
} else {
opts := ipfsbadger.DefaultOptions
if lowMemoryProfile {
applyBadgerLowMemoryProfile(logger, &opts)
}
ds, err = ipfsbadger.NewDatastore(dir, &opts)
if err != nil {
return nil, errcode.TODO.Wrap(err)
}
}
ds = sync_ds.MutexWrap(ds)
return ds, nil
}
func applyBadgerLowMemoryProfile(logger *zap.Logger, o *ipfsbadger.Options) {
logger.Info("Using Badger with low memory options")
o.Options = o.Options.WithValueLogLoadingMode(badger_opts.FileIO)
o.Options = o.Options.WithTableLoadingMode(badger_opts.FileIO)
o.Options = o.Options.WithValueLogFileSize(16 << 20) // 16 MB value log file
o.Options = o.Options.WithMaxTableSize(8 << 20) // should already be set by ipfs
}
func GetMessengerDBForPath(dir string, logger *zap.Logger) (*gorm.DB, func(), error) {
var sqliteConn string
if dir == InMemoryDir {
sqliteConn = ":memory:"
} else {
sqliteConn = path.Join(dir, MessengerDatabaseFilename)
}
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)
}
return db, func() {
sqlDB, _ := db.DB()
if sqlDB != nil {
sqlDB.Close()
}
}, nil
}