wip

config.go

@@ -0,0 +1,51 @@
+package main
+
+import (
+	"flag"
+	"fmt"
+	"os"
+
+	"gopkg.in/yaml.v2"
+)
+
+type (
+	Config struct {
+		Cert      Cert
+		Port      int
+		Endpoints map[string]Endpoint
+	}
+
+	Cert struct {
+		CRT string
+		Key string
+	}
+
+	Endpoint struct {
+		From      string
+		To        string
+		BasicAuth string
+	}
+)
+
+func NewConfig() (Config, error) {
+	var c Config
+
+	fs := flag.NewFlagSet(os.Args[0], flag.ContinueOnError)
+	fs.StringVar(&c.Cert.CRT, "crt", "", "path to .crt")
+	fs.StringVar(&c.Cert.Key, "key", "", "path to .key")
+	fs.IntVar(&c.Port, "p", 56112, "port to listen on")
+	f := fs.String("f", "/dev/null", `file of {endpoints:{"": {from:"", to:"", basicAuth:""}}}`)
+	if err := fs.Parse(os.Args[1:]); err != nil {
+		return c, err
+	}
+
+	if b, err := os.ReadFile(*f); err != nil {
+		return c, err
+	} else if err := yaml.Unmarshal(b, &c); err != nil {
+		return c, err
+	} else if len(c.Endpoints) == 0 {
+		return c, fmt.Errorf("no endpoints configured")
+	}
+
+	return c, nil
+}