Recode sysconf logic

internal/config/sysconf.go

@@ -4,18 +4,62 @@ import (
 	"fmt"
 	"os"
 	"os/exec"
-	"syscall"
+	"path/filepath"
 )
 
-func CreateConf() {
-	if syscall.Geteuid() != 0 {
-		os.Exit(1)
-		fmt.Printf("You must be root to run\n, use the sudo/doas")
+var Firewalls = map[string]string{
+	"iptables":  "iptables",
+	"nftables":  "nft",
+	"ufw":       "ufw",
+	"firewalld": "firewall-cmd",
+}
+
+var DetectedFirewall string
+
+const (
+	ConfigDir  = "/etc/banforge"
+	ConfigFile = "config.toml"
+)
+
+func CreateConf() error {
+	if os.Geteuid() != 0 {
+		return fmt.Errorf("you must be root to run this command, use sudo/doas")
 	}
-	exec.Command("mkdir /etc/banforge")
-	exec.Command("touch /etc/banforge/config.toml")
 
+	if err := os.MkdirAll(ConfigDir, 0755); err != nil {
+		return fmt.Errorf("failed to create config directory: %w", err)
+	}
+
+	configPath := filepath.Join(ConfigDir, ConfigFile)
+
+	if _, err := os.Stat(configPath); err == nil {
+		fmt.Printf("Config file already exists: %s\n", configPath)
+		return nil
+	}
+
+	file, err := os.Create(configPath)
+	if err != nil {
+		return fmt.Errorf("failed to create config file: %w", err)
+	}
+	defer file.Close()
+
+	if err := os.Chmod(configPath, 0644); err != nil {
+		return fmt.Errorf("failed to set permissions: %w", err)
+	}
+
+	fmt.Printf(" Config file created: %s\n", configPath)
+	return nil
 }
 
-func CheckSysConf() {
+func GetSysConf() error {
+	for name, binary := range Firewalls {
+		if _, err := exec.LookPath(binary); err == nil {
+			DetectedFirewall = name
+			fmt.Printf("found firewall: %s\n", name)
+			confstr := "firewall = \"" + name + "\""
+			os.WriteFile(ConfigDir+"/"+ConfigFile, []byte(confstr), 0644)
+			return nil
+		}
+	}
+	return fmt.Errorf("no firewall found (checked iptables, nftables, ufw, firewalld) please install once of them")
 }