[client, management] offload client config generation to the client (#6711)

Signed-off-by: Dmitri Dolguikh <dmitri.external@netbird.io>
Co-authored-by: crn4 <vladimir@netbird.io>
Co-authored-by: pascal <pascal@netbird.io>

idp/dex/config.go

@@ -308,7 +308,7 @@ func (s *Storage) OpenStorage(logger *slog.Logger) (storage.Storage, error) {
 		if file == "" {
 			return nil, fmt.Errorf("sqlite3 storage requires 'file' config")
 		}
-		return (&sql.SQLite3{File: file}).Open(logger)
+		return newSQLite3(file).Open(logger)
 	case "postgres":
 		dsn, _ := s.Config["dsn"].(string)
 		if dsn == "" {

idp/dex/provider.go

@@ -20,7 +20,6 @@ import (
 	"github.com/dexidp/dex/server"
 	"github.com/dexidp/dex/server/signer"
 	"github.com/dexidp/dex/storage"
-	"github.com/dexidp/dex/storage/sql"
 	"github.com/go-jose/go-jose/v4"
 	"github.com/google/uuid"
 	"github.com/prometheus/client_golang/prometheus"
@@ -79,7 +78,7 @@ func NewProvider(ctx context.Context, config *Config) (*Provider, error) {
 
 	// Initialize SQLite storage
 	dbPath := filepath.Join(config.DataDir, "oidc.db")
-	sqliteConfig := &sql.SQLite3{File: dbPath}
+	sqliteConfig := newSQLite3(dbPath)
 	stor, err := sqliteConfig.Open(logger)
 	if err != nil {
 		return nil, fmt.Errorf("failed to open storage: %w", err)

idp/dex/sqlite_cgo.go

@@ -0,0 +1,15 @@
+//go:build cgo
+
+package dex
+
+import (
+	sql "github.com/dexidp/dex/storage/sql"
+)
+
+// newSQLite3 builds the dex SQLite3 config. CGO builds use the upstream
+// struct that takes a File path. Non-CGO builds get an empty stub whose
+// Open() returns the dex "SQLite not available" error — correct behaviour
+// for binaries that can't link sqlite3 (e.g. cross-compiled ARM targets).
+func newSQLite3(file string) *sql.SQLite3 {
+	return &sql.SQLite3{File: file}
+}

idp/dex/sqlite_nocgo.go

@@ -0,0 +1,15 @@
+//go:build !cgo
+
+package dex
+
+import (
+	sql "github.com/dexidp/dex/storage/sql"
+)
+
+// newSQLite3 for non-CGO builds. The dex SQLite3 stub has no fields and its
+// Open() returns an error documenting the missing CGO support — correct
+// behaviour for cross-compiled artefacts that never actually run the
+// embedded IdP. The `file` argument is ignored.
+func newSQLite3(_ string) *sql.SQLite3 {
+	return &sql.SQLite3{}
+}