Clean up code inside the configuration loaders

application/configuration/config.go

@@ -170,32 +170,10 @@ func (c Configuration) Verify() error {
 
 // Common returns common settings
 func (c Configuration) Common() Common {
-	dialer := c.Dialer
-
-	if dialer == nil {
-		dialer = network.TCPDial()
-	}
-
-	if c.OnlyAllowPresetRemotes {
-		accessList := make(network.AllowedHosts, len(c.Presets))
-
-		for _, k := range c.Presets {
-			accessList[k.Host] = struct{}{}
-		}
-
-		dialer = network.AccessControlDial(accessList, dialer)
-	}
-
-	dialTimeout := c.DialTimeout
-
-	if dialTimeout <= 1*time.Second {
-		dialTimeout = 1 * time.Second
-	}
-
 	return Common{
 		HostName:               c.HostName,
 		SharedKey:              c.SharedKey,
-		Dialer:                 dialer,
+		Dialer:                 c.Dialer,
 		DialTimeout:            c.DialTimeout,
 		Presets:                c.Presets,
 		OnlyAllowPresetRemotes: c.OnlyAllowPresetRemotes,

application/configuration/loader_enviro.go

@@ -57,6 +57,10 @@ func Enviro() Loader {
 			Socks5:         parseEviro("SSHWIFTY_SOCKS5"),
 			Socks5User:     parseEviro("SSHWIFTY_SOCKS5_USER"),
 			Socks5Password: parseEviro("SSHWIFTY_SOCKS5_PASSWORD"),
+			Servers:        nil,
+			Presets:        nil,
+			OnlyAllowPresetRemotes: len(
+				parseEviro("SSHWIFTY_ONLYALLOWPRESETREMOTES")) > 0,
 		}.build()
 
 		if cfgErr != nil {
@@ -122,8 +126,7 @@ func Enviro() Loader {
 			DialTimeout:            time.Duration(cfg.DialTimeout) * time.Second,
 			Servers:                []Server{cfgSer.build()},
 			Presets:                presets,
-			OnlyAllowPresetRemotes: len(
+			OnlyAllowPresetRemotes: cfg.OnlyAllowPresetRemotes,
-				parseEviro("SSHWIFTY_ONLYALLOWPRESETREMOTES")) > 0,
 		}, nil
 	}
 }

application/configuration/loader_file.go

@@ -144,6 +144,20 @@ func (f fileCfgCommon) build() (fileCfgCommon, network.Dial, error) {
 		dialer = sDial
 	}
 
+	if f.OnlyAllowPresetRemotes {
+		accessList := make(network.AllowedHosts, len(f.Presets))
+
+		for _, k := range f.Presets {
+			if len(k.Host) <= 0 {
+				continue
+			}
+
+			accessList[k.Host] = struct{}{}
+		}
+
+		dialer = network.AccessControlDial(accessList, dialer)
+	}
+
 	return fileCfgCommon{
 		HostName:               f.HostName,
 		SharedKey:              f.SharedKey,