allow importing a wireguard config #27

README.md

@@ -49,7 +49,7 @@ go build ./cmd/wireproxy
 
 # Sample config file
 ```
-# The [Interface] and [Peer] configurations follow the same sematics and meaning
+# The [Interface] and [Peer] configurations follow the same semantics and meaning
 # of a wg-quick configuration. To understand what these fields mean, please refer to:
 # https://wiki.archlinux.org/title/WireGuard#Persistent_configuration
 # https://www.wireguard.com/#simple-network-interface
@@ -92,6 +92,22 @@ BindAddress = 127.0.0.1:25344
 #Password = ...
 ```
 
+Alternatively, if you already have a wireguard config, you can import it in the
+wireproxy config file like this:
+```
+WGConfig = <path to the wireguard config>
+
+# Same semantics as above
+[TCPClientTunnel]
+...
+
+[TCPServerTunnel]
+...
+
+[Socks5]
+...
+```
+
 
 ## Stargazers over time
 

config.go

@@ -311,10 +311,12 @@ func parseRoutinesConfig(routines *[]RoutineSpawner, cfg *ini.File, sectionName
 }
 
 func ParseConfig(path string) (*Configuration, error) {
-	cfg, err := ini.LoadSources(ini.LoadOptions{
+	iniOpt := ini.LoadOptions{
 		Insensitive:  true,
 		AllowShadows: true,
-	}, path)
+	}
+
+	cfg, err := ini.LoadSources(iniOpt, path)
 	if err != nil {
 		return nil, err
 	}
@@ -325,12 +327,22 @@ func ParseConfig(path string) (*Configuration, error) {
 		MTU:          1420,
 	}
 
-	err = ParseInterface(cfg, device)
+	root := cfg.Section("")
+	wgConf, err := root.GetKey("WGConfig")
+	wgCfg := cfg
+	if err == nil {
+		wgCfg, err = ini.LoadSources(iniOpt, wgConf.String())
+		if err != nil {
+			return nil, err
+		}
+	}
+
+	err = ParseInterface(wgCfg, device)
 	if err != nil {
 		return nil, err
 	}
 
-	err = ParsePeer(cfg, device)
+	err = ParsePeer(wgCfg, device)
 	if err != nil {
 		return nil, err
 	}