Merge branch 'master' into merge/master-into-v2-with-history (v1 into v2)

# Conflicts:
#	Earthfile
#	base/config/main.go
#	base/database/dbmodule/db.go
#	base/database/main.go
#	go.mod
#	go.sum
#	service/core/base/global.go

service/core/base/databases.go

@@ -1,43 +1,51 @@
 package base
 
 import (
+	"path/filepath"
+
 	"github.com/safing/portmaster/base/database"
-	_ "github.com/safing/portmaster/base/database/dbmodule"
 	_ "github.com/safing/portmaster/base/database/storage/bbolt"
+	_ "github.com/safing/portmaster/base/database/storage/sqlite"
+	"github.com/safing/portmaster/base/utils"
 )
 
 // Default Values (changeable for testing).
 var (
-	DefaultDatabaseStorageType = "bbolt"
+	DefaultDatabaseStorageType = "sqlite"
 )
 
 func registerDatabases() error {
+	// If there is an existing bbolt core database, use it instead.
+	coreStorageType := DefaultDatabaseStorageType
+	if utils.PathExists(filepath.Join(module.instance.DataDir(), "databases", "core", "bbolt")) {
+		coreStorageType = "bbolt"
+	}
+
+	// Register core database.
 	_, err := database.Register(&database.Database{
 		Name:        "core",
 		Description: "Holds core data, such as settings and profiles",
-		StorageType: DefaultDatabaseStorageType,
+		StorageType: coreStorageType,
 	})
 	if err != nil {
 		return err
 	}
 
+	// If there is an existing cache bbolt database, use it instead.
+	cacheStorageType := DefaultDatabaseStorageType
+	if utils.PathExists(filepath.Join(module.instance.DataDir(), "databases", "cache", "bbolt")) {
+		cacheStorageType = "bbolt"
+	}
+
+	// Register cache database.
 	_, err = database.Register(&database.Database{
 		Name:        "cache",
 		Description: "Cached data, such as Intelligence and DNS Records",
-		StorageType: DefaultDatabaseStorageType,
+		StorageType: cacheStorageType,
 	})
 	if err != nil {
 		return err
 	}
 
-	// _, err = database.Register(&database.Database{
-	//   Name:        "history",
-	//   Description: "Historic event data",
-	//   StorageType: DefaultDatabaseStorageType,
-	// })
-	// if err != nil {
-	//   return err
-	// }
-
 	return nil
 }