[status-im/status-mobile#9942] Upgradable paths in configs

Storing absolute path for different configs breaks compatibility on iOS
as app's dir is changed after upgrade. The solution is to store relative
paths and to concatenate it with `backend.rootDataDir`. The only
exception is `LogFile` as it is stored outside `backend.rootDataDir` on
Android. `LogDir` config was added to allow adding of custom dir for log
file.
Configs concerned:
`DataDir`
`LogDir`
`LogFile`
`KeystoreDir`
`BackupDisabledDataDir`

api/geth_backend.go

@@ -205,6 +205,7 @@ func (b *GethStatusBackend) startNodeWithKey(acc multiaccounts.Account, password
 	if err != nil {
 		return err
 	}
+
 	if err := logutils.OverrideRootLogWithConfig(conf, false); err != nil {
 		return err
 	}
@@ -372,6 +373,15 @@ func (b *GethStatusBackend) loadNodeConfig() (*params.NodeConfig, error) {
 	// which is set at the compile time.
 	// What's cached is usually outdated so we overwrite it here.
 	conf.Version = params.Version
+	conf.DataDir = filepath.Join(b.rootDataDir, conf.DataDir)
+	conf.ShhextConfig.BackupDisabledDataDir = filepath.Join(b.rootDataDir, conf.ShhextConfig.BackupDisabledDataDir)
+	if len(conf.LogDir) == 0 {
+		conf.LogFile = filepath.Join(b.rootDataDir, conf.LogFile)
+	} else {
+		conf.LogFile = filepath.Join(conf.LogDir, conf.LogFile)
+	}
+	conf.KeyStoreDir = filepath.Join(b.rootDataDir, conf.KeyStoreDir)
+
 	return &conf, nil
 }
 

api/nimbus_backend.go

@@ -366,6 +366,17 @@ func (b *nimbusStatusBackend) loadNodeConfig() (*params.NodeConfig, error) {
 	// which is set at the compile time.
 	// What's cached is usually outdated so we overwrite it here.
 	conf.Version = params.Version
+
+	// Replace all relative paths with absolute	
+	conf.DataDir = filepath.Join(b.rootDataDir, conf.DataDir)
+	conf.ShhextConfig.BackupDisabledDataDir = filepath.Join(b.rootDataDir, conf.ShhextConfig.BackupDisabledDataDir)
+	if len(conf.LogDir) == 0 {
+		conf.LogFile = filepath.Join(b.rootDataDir, conf.LogFile)
+	} else {
+		conf.LogFile = filepath.Join(conf.LogDir, conf.LogFile)
+	}
+	conf.KeyStoreDir = filepath.Join(b.rootDataDir, conf.KeyStoreDir)
+
 	return &conf, nil
 }
 

params/config.go

@@ -386,6 +386,9 @@ type NodeConfig struct {
 	// LogMobileSystem enables log redirection to android/ios system logger.
 	LogMobileSystem bool
 
+	// LogFile is a folder which contains LogFile
+	LogDir string
+
 	// LogFile is filename where exposed logs get written to
 	LogFile string