Experimental gui.

experimental/daemon/internal/dnsmasq/config.go

@@ -0,0 +1,97 @@
+package dnsmasq
+
+import (
+	"fmt"
+	"log"
+	"os"
+	"os/exec"
+
+	"wild-cloud-central/internal/config"
+)
+
+// ConfigGenerator handles dnsmasq configuration generation
+type ConfigGenerator struct{}
+
+// NewConfigGenerator creates a new dnsmasq config generator
+func NewConfigGenerator() *ConfigGenerator {
+	return &ConfigGenerator{}
+}
+
+// Generate creates a dnsmasq configuration from the app config
+func (g *ConfigGenerator) Generate(cfg *config.Config) string {
+	template := `# Configuration file for dnsmasq.
+
+# Basic Settings
+interface=%s
+listen-address=%s
+domain-needed
+bogus-priv
+no-resolv
+
+# DNS Local Resolution - Central server handles these domains authoritatively
+local=/%s/
+address=/%s/%s
+local=/%s/
+address=/%s/%s
+server=1.1.1.1
+server=8.8.8.8
+
+# --- DHCP Settings ---
+dhcp-range=%s,12h
+dhcp-option=3,%s
+dhcp-option=6,%s
+
+# --- PXE Booting ---
+enable-tftp
+tftp-root=/var/ftpd
+
+dhcp-match=set:efi-x86_64,option:client-arch,7
+dhcp-boot=tag:efi-x86_64,ipxe.efi
+dhcp-boot=tag:!efi-x86_64,undionly.kpxe
+
+dhcp-match=set:efi-arm64,option:client-arch,11
+dhcp-boot=tag:efi-arm64,ipxe-arm64.efi
+
+dhcp-userclass=set:ipxe,iPXE
+dhcp-boot=tag:ipxe,http://%s/boot.ipxe
+
+log-queries
+log-dhcp
+`
+
+	return fmt.Sprintf(template,
+		cfg.Cloud.Dnsmasq.Interface,
+		cfg.Cloud.DNS.IP,
+		cfg.Cloud.Domain,
+		cfg.Cloud.Domain,
+		cfg.Cluster.EndpointIP,
+		cfg.Cloud.InternalDomain,
+		cfg.Cloud.InternalDomain,
+		cfg.Cluster.EndpointIP,
+		cfg.Cloud.DHCPRange,
+		cfg.Cloud.Router.IP,
+		cfg.Cloud.DNS.IP,
+		cfg.Cloud.DNS.IP,
+	)
+}
+
+// WriteConfig writes the dnsmasq configuration to the specified path
+func (g *ConfigGenerator) WriteConfig(cfg *config.Config, configPath string) error {
+	configContent := g.Generate(cfg)
+
+	log.Printf("Writing dnsmasq config to: %s", configPath)
+	if err := os.WriteFile(configPath, []byte(configContent), 0644); err != nil {
+		return fmt.Errorf("writing dnsmasq config: %w", err)
+	}
+
+	return nil
+}
+
+// RestartService restarts the dnsmasq service
+func (g *ConfigGenerator) RestartService() error {
+	cmd := exec.Command("sudo", "/usr/bin/systemctl", "restart", "dnsmasq.service")
+	if err := cmd.Run(); err != nil {
+		return fmt.Errorf("failed to restart dnsmasq: %w", err)
+	}
+	return nil
+}