package main import ( "fmt" "log" "net" "github.com/AdguardTeam/AdGuardHome/dnsfilter" "github.com/AdguardTeam/AdGuardHome/dnsforward" "github.com/joomcode/errorx" ) var dnsServer = dnsforward.Server{} func isRunning() bool { return dnsServer.IsRunning() } func generateServerConfig() dnsforward.ServerConfig { filters := []dnsfilter.Filter{} userFilter := userFilter() filters = append(filters, dnsfilter.Filter{ ID: userFilter.ID, Rules: userFilter.Rules, }) for _, filter := range config.Filters { filters = append(filters, dnsfilter.Filter{ ID: filter.ID, Rules: filter.Rules, }) } newconfig := dnsforward.ServerConfig{ UDPListenAddr: &net.UDPAddr{Port: config.DNS.Port}, FilteringConfig: config.DNS.FilteringConfig, Filters: filters, } for _, u := range config.DNS.UpstreamDNS { upstream, err := dnsforward.AddressToUpstream(u, config.DNS.BootstrapDNS) if err != nil { log.Printf("Couldn't get upstream: %s", err) // continue, just ignore the upstream continue } newconfig.Upstreams = append(newconfig.Upstreams, upstream) } return newconfig } func startDNSServer() error { if isRunning() { return fmt.Errorf("Unable to start forwarding DNS server: Already running") } newconfig := generateServerConfig() err := dnsServer.Start(&newconfig) if err != nil { return errorx.Decorate(err, "Couldn't start forwarding DNS server") } return nil } func reconfigureDNSServer() error { if !isRunning() { return fmt.Errorf("Refusing to reconfigure forwarding DNS server: not running") } err := dnsServer.Reconfigure(generateServerConfig()) if err != nil { return errorx.Decorate(err, "Couldn't start forwarding DNS server") } return nil } func stopDNSServer() error { if !isRunning() { return fmt.Errorf("Refusing to stop forwarding DNS server: not running") } err := dnsServer.Stop() if err != nil { return errorx.Decorate(err, "Couldn't stop forwarding DNS server") } return nil }