ddns: remove ipv6 nameservers, support custom nameservers (#439)

cmd/dashboard/controller/member_api.go

@@ -1012,6 +1012,7 @@ type settingForm struct {
 	DashboardTheme          string
 	CustomCode              string
 	CustomCodeDashboard     string
+	CustomNameservers       string
 	ViewPassword            string
 	IgnoredIPNotification   string
 	IPChangeNotificationTag string // IP变更提醒的通知组
@@ -1078,6 +1079,7 @@ func (ma *memberAPI) updateSetting(c *gin.Context) {
 	singleton.Conf.Site.DashboardTheme = sf.DashboardTheme
 	singleton.Conf.Site.CustomCode = sf.CustomCode
 	singleton.Conf.Site.CustomCodeDashboard = sf.CustomCodeDashboard
+	singleton.Conf.DNSServers = sf.CustomNameservers
 	singleton.Conf.Site.ViewPassword = sf.ViewPassword
 	singleton.Conf.Oauth2.Admin = sf.Admin
 	// 保证NotificationTag不为空
@@ -1093,6 +1095,8 @@ func (ma *memberAPI) updateSetting(c *gin.Context) {
 	}
 	// 更新系统语言
 	singleton.InitLocalizer()
+	// 更新DNS服务器
+	singleton.OnNameserverUpdate()
 	c.JSON(http.StatusOK, model.Response{
 		Code: http.StatusOK,
 	})

model/config.go

@@ -125,6 +125,8 @@ type Config struct {
 	IgnoredIPNotificationServerIDs map[uint64]bool // [ServerID] -> bool(值为true代表当前ServerID在特定服务器列表内）
 	MaxTCPPingValue                int32
 	AvgPingCount                   int
+
+	DNSServers string
 }
 
 // Read 读取配置文件并应用

pkg/ddns/ddns.go

@@ -4,6 +4,7 @@ import (
 	"context"
 	"fmt"
 	"log"
+	"strings"
 	"time"
 
 	"github.com/libdns/libdns"
@@ -13,7 +14,10 @@ import (
 	"github.com/naiba/nezha/pkg/utils"
 )
 
-var dnsTimeOut = 10 * time.Second
+var (
+	dnsTimeOut       = 10 * time.Second
+	customDNSServers []string
+)
 
 type IP struct {
 	Ipv4Addr string
@@ -33,6 +37,12 @@ type Provider struct {
 	Setter      libdns.RecordSetter
 }
 
+func InitDNSServers(s string) {
+	if s != "" {
+		customDNSServers = strings.Split(s, ",")
+	}
+}
+
 func (provider *Provider) UpdateDomain(ctx context.Context) {
 	provider.ctx = ctx
 	for _, domain := range provider.DDNSProfile.Domains {
@@ -95,12 +105,17 @@ func splitDomainSOA(domain string) (prefix string, zone string, err error) {
 	domain += "."
 	indexes := dns.Split(domain)
 
+	servers := utils.DNSServers
+	if len(customDNSServers) > 0 {
+		servers = customDNSServers
+	}
+
 	var r *dns.Msg
 	for _, idx := range indexes {
 		m := new(dns.Msg)
 		m.SetQuestion(domain[idx:], dns.TypeSOA)
 
-		for _, server := range utils.DNSServers {
+		for _, server := range servers {
 			r, _, err = c.Exchange(m, server)
 			if err != nil {
 				return

pkg/utils/utils.go

@@ -13,7 +13,7 @@ import (
 var (
 	Json = jsoniter.ConfigCompatibleWithStandardLibrary
 
-	DNSServers = []string{"1.1.1.1:53", "223.5.5.5:53", "[2606:4700:4700::1111]:53", "[2400:3200::1]:53"}
+	DNSServers = []string{"1.1.1.1:53", "223.5.5.5:53"}
 )
 
 func IsWindows() bool {

resource/l10n/en-US.toml

@@ -747,3 +747,6 @@ other = "Expired"
 
 [Days]
 other = "d"
+
+[CustomNameservers]
+other = "Custom Public DNS Nameservers for DDNS (separate with comma)"

resource/l10n/es-ES.toml

@@ -747,3 +747,6 @@ other = "Expired"
 
 [Days]
 other = "d"
+
+[CustomNameservers]
+other = "Servidores DNS públicos personalizados para DDNS (separar con coma)"

resource/l10n/zh-CN.toml

@@ -747,3 +747,6 @@ other = "已到期"
 
 [Days]
 other = "天"
+
+[CustomNameservers]
+other = "自定义DDNS使用的公共DNS服务器（逗号分隔）"

resource/l10n/zh-TW.toml

@@ -747,3 +747,6 @@ other = "已到期"
 
 [Days]
 other = "天"
+
+[CustomNameservers]
+other = "自訂DDNS使用的公共DNS伺服器（逗號分隔）"

resource/template/dashboard-default/setting.html

@@ -53,6 +53,10 @@
                 <label>{{tr "PanelServerDomainAndIP"}}</label>
                 <input type="text" name="GRPCHost" placeholder="" value="{{.Conf.GRPCHost}}">
             </div>
+            <div class="field">
+                <label>{{tr "CustomNameservers"}}</label>
+                <input type="text" name="CustomNameservers" placeholder="" value="{{.Conf.DNSServers}}">
+            </div>
             <div class="field">
                 <label>{{tr "IPChangeAlert"}}</label>
             </div>

service/singleton/ddns.go

@@ -20,6 +20,7 @@ var (
 
 func initDDNS() {
 	OnDDNSUpdate()
+	OnNameserverUpdate()
 }
 
 func OnDDNSUpdate() {
@@ -33,6 +34,10 @@ func OnDDNSUpdate() {
 	}
 }
 
+func OnNameserverUpdate() {
+	ddns2.InitDNSServers(Conf.DNSServers)
+}
+
 func GetDDNSProvidersFromProfiles(profileId []uint64, ip *ddns2.IP) ([]*ddns2.Provider, error) {
 	profiles := make([]*model.DDNSProfile, 0, len(profileId))
 	ddnsCacheLock.RLock()