WIP SOCKS5 proxy

cmd/main.go

@@ -0,0 +1,40 @@
+package main
+
+import (
+	"fmt"
+	"os"
+	"strings"
+)
+
+var modeMap = map[string]func(args []string){
+	"relay server": relayServer,
+	"relay client": relayClient,
+	"proxy server": proxyServer,
+	"proxy client": proxyClient,
+}
+
+func main() {
+	if len(os.Args) < 3 {
+		fmt.Println()
+		fmt.Printf("Usage: %s MODE SUBMODE [OPTIONS]\n\n"+
+			"Available mode/submode combinations: "+getModes()+"\n"+
+			"Use -h to see the available options for a mode.\n\n", os.Args[0])
+		return
+	}
+	modeStr := fmt.Sprintf("%s %s", strings.ToLower(strings.TrimSpace(os.Args[1])),
+		strings.ToLower(strings.TrimSpace(os.Args[2])))
+	f := modeMap[modeStr]
+	if f != nil {
+		f(os.Args[3:])
+	} else {
+		fmt.Println("Invalid mode:", modeStr)
+	}
+}
+
+func getModes() string {
+	modes := make([]string, 0, len(modeMap))
+	for mode := range modeMap {
+		modes = append(modes, mode)
+	}
+	return strings.Join(modes, ", ")
+}